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Assessment of luteal function in the vervet monkey as a means to develop a model for obesity-related reproductive phenotype.
MedLine Citation:
PMID:  23278149     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The objective of the current study was to characterize luteal function in vervet monkeys. Urine from 12 adult female vervets housed at an academic research center was collected for 10 weeks from single-caged monkeys in order to assess evidence of luteal activity (ELA) as determined by urinary excretion of pregnanediol glucuronide (Pdg) and estrone conjugates (E1c). Dual energy X-ray absorptiometry (DXA) was performed on the monkeys to assess body composition, bone density, and fat mass. Menstrual cyclicity was determined using records of vaginal bleeding. ELA was observed in 9 monkeys and was characterized by a late follicular rise in E1c followed by a progressive increase in Pdg excretion. Mean menstrual cycle length was 26.7 ± 3.8 days and the average day of luteal transition was 14 ± 1.8. Three monkeys without ELA had a clearly defined E1c rise (mean 12-fold from nadir) followed by an E1c drop that was not accompanied by Pdg rise and coincided with vaginal bleeding. Among the 9 ELA monkeys, excretion of E1c tended to negatively associate with fat mass, although this finding did not reach statistical significance (r = -0.61, p = 0.08). Similar to women, vervet monkeys experience an increase in E1c late in the follicular phase of the menstrual cycle which is followed by a subsequent luteal Pdg peak. Assessment of urinary reproductive hormones allows for identification of cardinal menstrual cycle events; thus, the similarity of vervet cycles to human menstrual cycles makes them a useful model for obesity-related human reproductive impairment.
Authors:
Mila C Kundu; Margaret C May; Justin Chosich; Andrew P Bradford; Bill Lasley; Nancy Gee; Nanette Santoro; Susan E Appt; Alex J Polotsky
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-2
Journal Detail:
Title:  Systems biology in reproductive medicine     Volume:  -     ISSN:  1939-6376     ISO Abbreviation:  Syst Biol Reprod Med     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101464963     Medline TA:  Syst Biol Reprod Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Pathology (Comparative Medicine) , Wake Forest University Primate Center , Winston-Salem , North Carolina.
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