D
Delwood C. Collins
Researcher at United States Department of Veterans Affairs
Publications - 14
Citations - 881
Delwood C. Collins is an academic researcher from United States Department of Veterans Affairs. The author has contributed to research in topics: Luteal phase & Menstrual cycle. The author has an hindex of 11, co-authored 14 publications receiving 855 citations. Previous affiliations of Delwood C. Collins include College of Health Sciences, Bahrain & Emory University.
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Journal ArticleDOI
Long-term effect of a first pregnancy on the secretion of prolactin
TL;DR: A first pregnancy leads to a long-term decrease in serum prolactin secretion, lasting at least 12 to 13 years, which is known to protect against subsequent breast cancer.
Journal ArticleDOI
Application of a method for estimating day of ovulation using urinary estrogen and progesterone metabolites.
Donna D. Baird,D R McConnaughey,Clarice R. Weinberg,P.I. Musey,Delwood C. Collins,James S. Kesner,Edwin A. Knecht,Allen J. Wilcox +7 more
TL;DR: Results of applying a method for estimating day of ovulation that relies on the relative concentrations of estrogen and progesterone metabolites in daily first-morning urine specimens to a large study with 724 menstrual cycles from 217 women suggest it introduces no more measurement error than when day of Ovulation is determined by plasma luteinizing hormone (LH).
Journal ArticleDOI
Long term effects of a first pregnancy on the hormonal environment: estrogens and androgens.
Victoria C. Musey,Delwood C. Collins,Donna R. Brogan,Vicki R. Santos,P.I. Musey,David Martino-Saltzman,John R. K. Preedy +6 more
TL;DR: There was no significant relationship between serum DHAS or DHA levels and parity (one to three previous pregnancies), indicating that the changes occur only after a first pregnancy.
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Reproductive Biology of Paraplegics: Results of Semen Collection, Testicular Biopsy and Serum Hormone Evaluation
Inder Perkash,Inder Perkash,David E. Martin,David E. Martin,Harold Warner,Harold Warner,Michael S. Blank,Michael S. Blank,Delwood C. Collins,Delwood C. Collins +9 more
TL;DR: The principal deterrent to the use of semen collected by rectal probe electrostimulation from paraplegics for artificial insemination resides in a predominantly low sperm motility, suggesting suggestions for improvement of motility.
Journal ArticleDOI
Preimplantation hormonal differences between the conception and non-conception menstrual cycles of 32 normal women.
Donna D. Baird,Allen J. Wilcox,Clarice R. Weinberg,Freya Kamel,D R McConnaughey,P.I. Musey,Delwood C. Collins +6 more
TL;DR: Compared with non-conception cycles, conception cycles had a steeper early luteal rise in progesterone and higher mid-luteal oestrogen and progester one concentrations, but it cannot rule out the possibility that the preimplantation embryo had stimulated early increases in steroid production.