Richard R Yeoman
Biographic Data
| ID | 8906099 |
|---|---|
| NAME | Richard R Yeoman |
| GIVEN NAMES | Richard R |
| FAMILY NAME | Yeoman |
| SIGNATURE | YEOMAN R R |
| AFFILIATIONS | University of South Alabama |
| VERIFIED | No |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 9 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1988 |
| LATEST PUBLICATION YEAR | 2000 |
| H-INDEX | 0 |
Midcycle and luteal elevations of follicle stimulating hormone in squirrel monkeys (Saimiri boliviensis) during the estrous cycle
Follicle stimulating hormone (FSH) has fundamental importance in reproductive function, but its cyclic pattern has not previously been described in the squirrel monkey, due primarily to the lack of a suitable assay. An homologous radioimmunoassay (RIA) based on recombinant cynomolgus FSH measured changes in serum FSH relative to patterns of bioactive luteinizing hormone (LH), estradiol, and progesterone during the estrous cycle. FSH was observed …
Midcycle and luteal elevations of follicle stimulating hormone in squirrel monkeys (Saimiri boliviensis) during the estrous cycle
Follicle stimulating hormone (FSH) has fundamental importance in reproductive function, but its cyclic pattern has not previously been described in the squirrel monkey, due primarily to the lack of a suitable assay. An homologous radioimmunoassay (RIA) based on recombinant cynomolgus FSH measured changes in serum FSH relative to patterns of bioactive luteinizing hormone (LH), estradiol, and progesterone during the estrous cycle. FSH was observed …
Elevated ovarian expression and serum concentration of α inhibin in the luteal phase during follicular development in the squirrel monkey (Saimiri boliviensis) compared to the human
The goal of the present investigation was to determine in the squirrel monkey the source and pattern of inhibin, a hormone known to effect reproductive steroid levels via pituitary and ovarian mechanisms. Since this seasonally polyestrous species is known to have elevated serum levels of reproductive steroids compared to other primates, the levels of ovarian alpha subunit mRNA expression and serum total alpha inhibin, estradiol, progesterone, and…
Age‐related hormonal differences in cycling squirrel monkeys ( Saimiri boliviensis boliviensis )
This study was planned to evaluate the poor reproductive performance of aged squirrel monkeys in a self‐sustaining breeding colony. Two groups of monkeys aged 6–8 years (Group 1), and >12 years (Group 2) were evaluated. During the midbreeding season, daily blood samples were obtained for a period of 35 days from 10 animals in each group. Blood samples were assayed for serum estradiol (E), progesterone (P), and bioassayable luteinizing hormone (bi…
Effects of 17‐hydroxyprogesterone caproate (17‐OHPC) administration to pregnant squirrel monkeys ( Saimiri boliviensis boliviensis )
Poor reproductive performance of the squirrel monkey ( Saimiri boliviensis boliviensis ) in captivity and a relative progesterone (P) deficiency in pregnancy have been reported. Since premature births may contribute to pregnancy wastage, we attempted to measure the effectiveness of 17‐hydroxyprogesterone caproate (17‐OHPC) treatment of pregnant squirrel monkeys to prevent early deliveries. Based on clearance studies of nonpregnant animals, 25 mg …
Confirmation of ovulation and characterization of luteinizing hormone and progesterone secretory patterns in cycling, isosexually housed Bolivian squirrel monkeys ( Saimiri boliviensis boliviensis )
In the female Bolivian squirrel monkey a much greater elevation of serum estradiol (E 2 ) was measured after mating than that observed in similary cycling monkeys that did not mate. This raised the possibility that cycling squirrel monkeys may not ovulate during nonmated cycles To test this hypothesis, we performed laparoscopies on nine isosexually housed, cycling monkeys to observe the ovaries after the luteinizing hormone (LH) surge, which was …
Forthcoming article
Seasonal changes in serum dehydroepiandrosterone, androstenedione, and testosterone levels in the squirrel monkey ( Saimiri boliviensis boliviensis )
The squirrel monkey ( Saimiri boliviensis boliviensis ) has a well‐defined breeding season during which adult males undergo androgen‐dependent morphological changes, with acquisition of active spermatogenesis. To assess the hormonal events of this annual cycle, blood samples were obtained weekly from ten adult males, and serum was assayed for testosterone (T), androstenedione (ΔA), and dehydroepiandrosterone (DHEA). A significant seasonal variati…
In vitro bioactive luteinizing hormone assay shows cyclical, seasonal hormonal changes and response to luteinizing‐hormone releasing hormone in the squirrel monkey ( Saimiri boliviensis boliviensis )
Studies on the reproductive mechanisms of the squirrel monkey have been hampered by inadequate measurements of luteinizing hormone (LH). The mouse interstitial cell bioassay, which measures testosterone production as the endpoint, was validated for use in the squirrel monkey by parallel responses of serum to LH standards and by in vivo responses to an LH‐releasing hormone (LHRH) analogue. The LH surge profile, as determined by daily blood samplin…
No prominent works on this page.
Forthcoming article
Seasonal changes in serum dehydroepiandrosterone, androstenedione, and testosterone levels in the squirrel monkey ( Saimiri boliviensis boliviensis )
The squirrel monkey ( Saimiri boliviensis boliviensis ) has a well‐defined breeding season during which adult males undergo androgen‐dependent morphological changes, with acquisition of active spermatogenesis. To assess the hormonal events of this annual cycle, blood samples were obtained weekly from ten adult males, and serum was assayed for testosterone (T), androstenedione (ΔA), and dehydroepiandrosterone (DHEA). A significant seasonal variati…
In vitro bioactive luteinizing hormone assay shows cyclical, seasonal hormonal changes and response to luteinizing‐hormone releasing hormone in the squirrel monkey ( Saimiri boliviensis boliviensis )
Studies on the reproductive mechanisms of the squirrel monkey have been hampered by inadequate measurements of luteinizing hormone (LH). The mouse interstitial cell bioassay, which measures testosterone production as the endpoint, was validated for use in the squirrel monkey by parallel responses of serum to LH standards and by in vivo responses to an LH‐releasing hormone (LHRH) analogue. The LH surge profile, as determined by daily blood samplin…
Effects of 17‐hydroxyprogesterone caproate (17‐OHPC) administration to pregnant squirrel monkeys ( Saimiri boliviensis boliviensis )
Poor reproductive performance of the squirrel monkey ( Saimiri boliviensis boliviensis ) in captivity and a relative progesterone (P) deficiency in pregnancy have been reported. Since premature births may contribute to pregnancy wastage, we attempted to measure the effectiveness of 17‐hydroxyprogesterone caproate (17‐OHPC) treatment of pregnant squirrel monkeys to prevent early deliveries. Based on clearance studies of nonpregnant animals, 25 mg …
Confirmation of ovulation and characterization of luteinizing hormone and progesterone secretory patterns in cycling, isosexually housed Bolivian squirrel monkeys ( Saimiri boliviensis boliviensis )
In the female Bolivian squirrel monkey a much greater elevation of serum estradiol (E 2 ) was measured after mating than that observed in similary cycling monkeys that did not mate. This raised the possibility that cycling squirrel monkeys may not ovulate during nonmated cycles To test this hypothesis, we performed laparoscopies on nine isosexually housed, cycling monkeys to observe the ovaries after the luteinizing hormone (LH) surge, which was …
Age‐related hormonal differences in cycling squirrel monkeys ( Saimiri boliviensis boliviensis )
This study was planned to evaluate the poor reproductive performance of aged squirrel monkeys in a self‐sustaining breeding colony. Two groups of monkeys aged 6–8 years (Group 1), and >12 years (Group 2) were evaluated. During the midbreeding season, daily blood samples were obtained for a period of 35 days from 10 animals in each group. Blood samples were assayed for serum estradiol (E), progesterone (P), and bioassayable luteinizing hormone (bi…
Elevated ovarian expression and serum concentration of α inhibin in the luteal phase during follicular development in the squirrel monkey (Saimiri boliviensis) compared to the human
The goal of the present investigation was to determine in the squirrel monkey the source and pattern of inhibin, a hormone known to effect reproductive steroid levels via pituitary and ovarian mechanisms. Since this seasonally polyestrous species is known to have elevated serum levels of reproductive steroids compared to other primates, the levels of ovarian alpha subunit mRNA expression and serum total alpha inhibin, estradiol, progesterone, and…
Midcycle and luteal elevations of follicle stimulating hormone in squirrel monkeys (Saimiri boliviensis) during the estrous cycle
Follicle stimulating hormone (FSH) has fundamental importance in reproductive function, but its cyclic pattern has not previously been described in the squirrel monkey, due primarily to the lack of a suitable assay. An homologous radioimmunoassay (RIA) based on recombinant cynomolgus FSH measured changes in serum FSH relative to patterns of bioactive luteinizing hormone (LH), estradiol, and progesterone during the estrous cycle. FSH was observed …
Midcycle and luteal elevations of follicle stimulating hormone in squirrel monkeys (Saimiri boliviensis) during the estrous cycle
Follicle stimulating hormone (FSH) has fundamental importance in reproductive function, but its cyclic pattern has not previously been described in the squirrel monkey, due primarily to the lack of a suitable assay. An homologous radioimmunoassay (RIA) based on recombinant cynomolgus FSH measured changes in serum FSH relative to patterns of bioactive luteinizing hormone (LH), estradiol, and progesterone during the estrous cycle. FSH was observed …
Biology (8 works) · Hormone (8 works) · Medicine (8 works) · Squirrel monkey (7 works) · Luteinizing hormone (6 works) · Endocrinology (5 works) · Estrous cycle (5 works) · Hypothalamic control of reproductive hormones (5 works) · Internal Medicine (5 works) · Follicular phase (4 works)