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Prof. Okelo Dominic Oduor Publications
1	2010	The Epididymis Of Rufous Sengi (Elephantulus Rufescens): Structure, Adaptations And Role In Sperm Maturation And Storage Click to View Abstract No Abstract!
2	2009	The Morphology And Morphometry Of The Male Reproductive System Of The Rufous Sengi (Elephantulus Rufescens). Click to View Abstract No Abstract!
3	2006	NJOGU, A., OWITI, G.E.O. PERSSON, E. & ODUOR- OKELO (2006) Ultrastructure Of The Chorioallantoic Placenta And Chorionic Vesicle Of The Lesser Bush Baby(Galago Senegalensis). Placenta 27: 771-779. Click to View Abstract No Abstract!
4	2006	ODUMA, J.A., ODUOR-OKELO, D., WANGO, E.O., MAKAWITI, D.W. & ODONGO, H.O. (2006) Pesticide Heptachlor Affects Steroid Hormone Secretion In Isolated Follicular And Luteal Rat Cells. J. Comparative Biochem & Physiol. Part C 144: 76-84. Click to View Abstract No Abstract!
5	2005	OJOO, R.O., OWITI, G.E.O. ODUOR- OKELO, D. & ONYANGO, D.W.(2005)Frequency Of Stages Of The Seminiferous Cycle In The Thick-tailed Bush Baby (Otolemur Garnetti), A Promisian Primate: Possible Phylogenetic Implications?. Anat. Embryol.209: 381-389. Click to View Abstract No Abstract!
6	2004	ODUOR- OKELO, D., KATEMA, R.M &CARTER, A.M. (2004) Placenta And Fetal Membranes Of The Four-toed Elephant Shrew, Petrodromus Tetradactylus. Plcenta 25:803-809. Click to View Abstract No Abstract!
7	2004	CARTER, A.M., ENDERS, A.C., KUNZEL, ODUOR- OKELO, D. & VOGEL. P.(2004) Placentation In Species Of Phylogenetic Importance: The Afrotheria. Animal Reprod. Sci. 82-83: 35-48. Click to View Abstract No Abstract!
8	2002	MWENDA, J.M., SICHANGI, M.W.,ODUOR- OKELO, D., WANGO, E.O. & LANGAT, D. (2002) Human Endogenous Retrovirus (ERV3) Env-like Antigens Expressed In Baboon Testes And Epididymides. E. Med. J. 80: 265-270. Click to View Abstract No Abstract!
9	2002	CHIBUNDA, R.T., WANGO, E.O., MIARON, O.J., WINGA, J., PEREKA, A.E. & ODUOR- OKELO, D. (2002) The Effect Of Dieldrin On In Vitro And In Vivo Production Of Testosterone And Plasma Levels Of Luteinizing Hormone In Male Rats. Tanzania Vet.J.21(2) :121-127. Click to View Abstract No Abstract!
10	2001	ONYANGO, D.W., WANGO,E.O., OTIANG'A-OWITI, G.E., ODUOR-OKELO, D.& WERNER, G. (2001). Morphological Characterization Of The Seminiferous Cycle In The Goat (Capra Hircus): A Histological And Ultrastructural Study. Ann. Anat. 182:235-241. Click to View Abstract No Abstract!
11	2001	ONYANGO, D.W., WANGO, E.O., OTIANG'A-OWITI, G.E., ODUOR-OKELI, D.& WERNER, G. (2001). Early Testicular Response To Intraperitoneal Administration Of Ethane Dimethane Sulphonate (EDS) In The Goat (Capra Hircus). J. Submicrosc. Cytol.Path. 33: 117-124. Click to View Abstract No Abstract!
12	2000	ODUOR-OKELO, D., (2000). The Veterinarians And Their Role In Leadership. Kenya Vet. 19:5-6. Click to View Abstract No Abstract!
13	2000	ODUOR-OKELO, D., WANDERA, J. G., & KATEMA, R. M., (2000). Nematode Infection In Barbus Altianalis,1900 (Pisces: Cyprinidae) In Lake Victoria River System. Kenya Vet. (suppl. 2) 131-133. Click to View Abstract No Abstract!
14	2000	Morphological Characterization Of The Seminiferous Cycle In The Goat (Capra Hircus): A Histological And Ultrastructural Study. Click to View Abstract The cycle of spermatogenesis/seminiferous cycle was investigated in the goat testis using both light and electron microscopy techniques. Using the various cell associations and the accompanying changes in spermatid shape and location, the cycle was divided into eight (8) successive stages. The cycle began with the accomplishment of spermiation (stage 1) and ended with apical migration and close attachment of late maturation phase spermatids at the Sertoli cell apex accompanied by adluminal retention of residual bodies with dense staining inclusions (stage 8). The early stages of the cycle (stages 1-4) were therefore characterized by the presence of only one generation of spermatids, the second one appearing only after the division of secondary spermatocytes in stage 4. Consequently, stages 5-8 had two generations of spermatids; Golgi or cap phase as well as maturation phase spermatids. Although stages 5 to 7 appeared as distinct entities, stages 6 and 7 were rather short-lived and considered as continuations of stage 5. Therefore, the 8 stages of the cycle in the goat were further condensed into 6 main divisions. The duration of each stage was estimated by the frequency of occurrence in sections. Among these, stage 1 had the highest frequency (34%) followed by stages 5-7 (27%). Stages 8 and 4 had the shortest frequency (up to 9%) while stages 2 and 3 had 13% and 12% respectively. These results indicate that, like most domestic species, goats have a cycle of 8 stages with 6 main divisions, the longest being stage 1.
15	1998	CHILUBA, R. T., WANGO, E. O., MIARON, O. J., ODUOR-OKELO, D., PEREKA,A. E., & WINGA, J., (1998). Effects Of Dieldrin On Plasma Testosterone And Plasma Luitenizing Hormone In Male Rats. Tanzania Vet. J. 18(2): 127-135. Click to View Abstract No Abstract!
16	1998	ODUMA, J.A., MAKAWITI, D. W., WANGO, E. O., ODUOR-OKELO, D.,SCHULER, G., & HOFFMANN, B., (1998). In Vitro And In Vivo Effects Of The Pesticide Heptachlor On The Synthesis Of Progesterone And Estradiol.Proc. First Meet. Fed. African Soc. Biochem & Mol. Bio Click to View Abstract No Abstract!
17	1997	OTIANG Click to View Abstract No Abstract!
18	1997	CHIBUNDA, R. T., WANGO, E.D., MIARON, O. J., ODUOR-OKELO, D., & WINGA, J., (1997). The Effect Of Dieldrin On The Reproductive System Of The Neonatal Male Rat. Tanzania Vet. J. 17 (suppl.3): 169-175. Click to View Abstract No Abstract!
19	1995	ODUMA, J., WANGO, E.O., MAKAWITI, D., JENSEN, E. N. & ODUOR-OKELO,D. (1995). Effects Of Graded Doses Of The Pesticide Heptachlor On Body Weight, Mating Success, Oestrous Cycle, Gestation Length And Litter Size In Laboratory Rats. J.Comp. Biochem. Physiol. Click to View Abstract No Abstract!
20	1995	WANGO, E. O., ODONGO, H. O., ODUMA, J.A. & ODUOR-OKELO, D. (1995).Effects Of 6-hydroxydopamine On Testosterone Production By Mouse Leydig Cells In Vitro. Acta Biol.46:75-85. Click to View Abstract No Abstract!
21	1995	ODUMA, J. A., WANGO, E. O., ODUOR-OKELO, D., MAKAWITI, D. W. & ODONGO, H. O. (1995). In Vivo And In Vitro Effects Of Graded Doses Of The Pesticide Hepatchlor On Female Sec Steroid Production In Rats. J. Comp. Biochem. Physiol. 111 C (2): 191-196. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
22	1994	OJOO, R.O., OWITI, G. E. O., ODUOR-OKELO, D. & WANGO, E.O. (1994).Daytime Variations Of Serum Testosterone And Luteinizing Hormone In Captive Thick Tailed Bush Babies. J. Primat. 35(2): 211-217. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
23	1994	MAKORI,N. ODUOR- OKELO,D. WARUI C. N. & OWITI, G.E.O. (1994), , An Ultrastructural And Morphometric Study Of The Late-term Placenta Of The Root Rats(Tachyoryctes Splendors). In Advanced In Reproductive Research In Man And Animals.Proc. 2nd Int. Conf. In R Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
24	1993	ONYANGO, D. W., ODUOR-OKELO, D. & OWITI, G E.O.(1993).Ultrastructural Study Of The Testis Of Non-breeding Naked Mole Rat (Heterocephalus Glaber, Ruppell).Annals Of Anatomy 175: 447-452. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
25	1992	GOMBE, S. & ODUOR-OKELO, D. (1992). Impairment Of Gonadal Function And Epididymal Sperm Passage Following Cremaster Muscle Transection In The Goat. J.Obst. & Gyn, E. And Central Afric. 10(2): 56-61. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
26	1992	OWITI, G. E. O., ODUOR-OKELO, D. & GOMBE, S. (1992). Foetal Membranes And Placenta Of The E. African Spring Hare (Pedeses Capensis Larvalis Hollister). Afri.J. Ecol. Vol. 30: 74-86. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
27	1991	ODUOR-OKELO, D. & GOMBE, S. (1991). Development Of The Fetal Membrane In The Cane Rat, (Thryonomys Swinderianus): A Re-interpretation. Afric. J. Ecol. 29: 157-167. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
28	1991	ODUOR-OKELO, D. & AJIBOLA-TAYLOR,T.(1991) Universities In Kenya Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
29	1991	ONYANGO, D. W., OWITI, G.E.O., ODUOR-OKELO, D. & MAKAWITI, D. W.(1991). In Vitro Testicular Interstitial (Leydig) Cell Response To LH And Concentration Of Plasma Testosterone And LH In The Naked Mole Rat (Heterocephalus Glaber, Ruppel). Afr. J. Ecol. Vol. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
30	1991	MAKORI, N., ODUOR-OKELO, D. & OWITI, G. E. O., (1991). Morphogenesis Of The Foetal Membranes And Placenta Of The Root Rat (Tachyorocytes Spendens). Afric. J.Ecol. 29: 248-260. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
31	1990	WYNN, R.M., HOSCHNER, J.A. & ODUOR-OKELO, D. (1990). The Interhaemal Membrane Of The Spotted Hyena: An Immunohystochemical Appraisal. Placenta, 11:215-221. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
32	1986	GOMBE, S. & ODUOR-OKELO, D. & O Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
33	1986	WAINDI, E. N., GOMBE, S. & ODUOR-OKELO, D. (1986). D. Plasma Testosterone In Trypanosoma Conglense Infected Togernburg Goats. Archives Androl. 17: 9-17. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
34	1986	Plasma Testosterone In View The MathML Source View The MathML Source-infected Toggenburg Goats Click to View Abstract No Abstract!
35	1986	Comparative Haemomonochorial Placentation In Different Mammalian Species Click to View Abstract No Abstract!
36	1985	ODUOR-OKELO, D. (1985). Ultrastructural Observations On The Choriallantoic Placenta Of The Golden-rumped Elephant Shrew, (Rhynchocyon Chrysopygus). Afric. J.Ecol. 23: 155-166. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
37	1985	OWITI, G.E.O., ODUOR-OKELO, D. & GOMBE, S. (1985). Ultrastructure Of The Choriallantoic Placenta Of The Spring Hare (Pedetes Capensis Larvallis Hollister). Afic.J. Ecol. 23: 145-152. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
38	1984	ODUOR-OKELO, D. (1984). An Electron Microscopic Study Of The Choriallantoic Placenta And Subplacenta Of The Cane Rat. (Thryonomys Swinderianus Temmick).Placenta 5: 433-442. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
39	1984	ODUOR-OKELO, D. (1984). Histology Of Choriallantoic Placenta Of The Golden Rumped Elephant Shrew (Rhynchocyon Chrysophygus, Gunther 1881). Anat. Anz. Jena 157: 395-407. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
40	1983	ODUOR-OKELO, D., MUSEWE, V.O. & GOMBE, S. (1983). Electron Microscopic Study Of The Choriallantoic Placenta Of The Rock Hyrax (Heterohyrax Brucei, Gray), J.Reprod. Fert. 68: 311-316. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
41	1983	GOMBE, S. & ODUOR-OKELO, D. (1983). Chronic (90) Day Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
42	1983	OGAA, J.S. & ODUOR-OKELO, D. (1983) Wildlife Obstetrics. A Challenge To Veterinarians. Kenya Vet. 7: 14-16. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
43	1982	ODUOR-OKELO, D. & NEAVES, W.B. (1982). The Choriallantoic Placenta Of The Spotted Hyena (Crocuta Crocuta Erxleben): An Electron Microscopic Study. Anat. Rec.204: 215-222. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
44	1982	ODUOR-OKELO, D., & GOMBE, S. (1982). Placentation In The African Cane Rats (Thryonomys Swinderianus) Afric. J. Ecol. 20: 249-266. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
45	1980	ODUOR-OKELO, D., GOMBE, D. & AMOROSO, E.C. (1980). The Placenta And Fetal Membranes Of The Shortnosed Elephant Shrew (Elephantulus Rufescens).Saugatierkol. Mitt. 28: 293-301. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
46	1980	KAAYA, G.P. & ODUOR-OKELO, D. (1980). The Effect Of Tryponosoma Conglense Infection On The Testis And Epididymis Of The Goat. Bull. Anim. Health. Prod. Afric. 28: 1-5. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
47	1980	GOMBE, S., ODUOR-OKELO, D. & Else, J. (1980). The Potential Of African Mammals On New Models For Research In Human Reproduction (Eds. M. Serio & L.Martini) Pp. 345-354, Raven Press, N.Y. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
48	1979	ODUOR-OKELO, D. (1979). A Study Of The Fetal Membranes And Placenta Of The African Cane Rat (Thryonomys Swinderianus), With Some Observations On The Placentation In The Elephant Shrews Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
49	1978	ODUOR-OKELO, D. (1978). A Histological Study Of The Ovary Of The Cane Rat(Thryonomys Swinderianus) E. Afr. Wildlife. J. 16: 257-264. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
50	1977	GOMBE, S. & ODUOR-OKELO, D. (1977). Effects Of Temperature And Relative Humidity On Plasma And Gonadol Testosterone Concentration In Camels. J. Reproduction, Fert. 50: 107 Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
51	1977	GOMBE, S. & ODUOR-OKELO, D. & AMOROSO, E.C. (1977). Role Of Progesterone In Pregnancy In The Hyrax. E. Afri. J. Med. Res. 4: 75-80. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
52	1977	GOMBE, S. & ODUOR-OKELO, D., BHARAJ, R. & VERJEE, H.Z. (1977).Gonadal Plasma Testosterone And Cholesterol In Scorbutic Guinea Pigs. Int. J. Vit. & Nutritional Res. 47: 75-80. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
53	1976	ODUOR-OKELO, D. (1976). Histochemistry Of The Duodenal Glands Of The Cat And Horse. Acta Anat. 94: 446-456. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
54	1974	ODUOR-OKELO, D. (1974). Carbohydrate Histochemistry Of The Duodenal Glands And Trachea Of The Cat And Horse. Dr.Vet.Med.Thesis, University Of Bern,Switzerland. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
55	1974	ODUOR-OKELO, D. (1974). The Leydig Cells And Vascular System In The Testis Of The Goat (Capra Hircus). Z. Mikrosk Anat. Forsch 88: 1036-1044. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.
56	1974	Carbohydrate Histochemistry Of The Duodenal Glands And Trachea Of The Cat And Horse Click to View Abstract No Abstract!
57	1974	The Leydig Cells And The Vascular System In The Testis Of The Goat (Capra Hircus). Click to View Abstract No Abstract!
58	1972	ODUOR-OKELO, D (1972). The Lymphatic System Of The Testis Of The Goat. M.Sc.Thesis. University Of Nairobi. Click to View Abstract Adult female Sprague-Dawley rats were injected with corn oil or 5 mg, 20 mg, 25 mg or 30 mg per kg body weight of heptachlor solution every other day for up to 18 days. The rats were killed at the end of the experimental period, and blood samples were assayed for progesterone and oestrogen by radioimmunoassay. Ovarian cells from the rats were isolated and incubated either on their own, or in the presence of LH or FSH, and production of progesterone and oestrogen determined. Control incubations consisted of cells from corn oil-treated rats. The latter were also incubated on their own or in the presence of LH or FSH. Heptachlor significantly suppressed blood progesterone and oestradiol levels (P < 0.05 to P < 0.001), the degree of suppression depending on the dose and the stage of the oestrous cycle in which samples were obtained. Production of oestradiol by ovarian cells from heptachlor-treated rats was lower than for corn oil-treated controls. Cells from rats treated with low doses of heptachlor (5 mg per kg body weight) showed an increased production of progesterone, while high doses (> 20 mg per kg body weight) suppressed production.