Circulating and excreted hormones during the ovarian cycle in the cotton‐top tamarin, Saguinus oedipus

Circulating and excreted hormones during the ovarian cycle in the cotton‐top tamarin, Saguinus... Five parous, cycling cotton‐top tamarin females were used to compare circulating and urinary profiles of the major reproductive hormones during the ovarian cycle. Blood samples were collected on unanesthetized, hand restrained females three times per week for 25 days and first morning void urine was collected daily for 30–40 days including the serum sampling period. Serum and urine samples were analyzed for estrone, estradiol, and bioactive LH. Additionally, serum was analyzed for progesterone and urine for estrone conjugates (E1G) and immunoreactive LH. Both serum and urinary hormonal profiles revealed ovarian cyclicity in four females; the fifth one stopped cycling during the study. All hormones were referenced to the urinary immunoreactive LH peak. Urinary estrone conjugates followed similar profiles to serum progesterone. Progesterone levels increased two‐ to threefold on the day of the urinary immunoreactive LH peak. Peak levels of circulating bioactive LH occurred on the same day or the day preceding the urinary bioactive and immunoreactive LH peak for all four cycling females. Serum estradiol levels rose during the follicular phase and peaked prior to or on the day of the urinary LH peak while urinary estradiol levels did not rise until the day of the urinary LH peak. Serum and urinary estrone levels did not rise until the day of the urinary LH peak and remained high throughout the luteal phase. The measurement of urinary LH corresponded well with serum LH, establishing urinary LH as an important hormone for monitoring the ovulation in the tamarin. The highest circulating estradiol concentrations were found in the follicular phase of the cycle, but estradiol did not appear in urine during the follicular phase of the cycle. Elevated estrone levels occur during the luteal phase following the progesterone pattern, and therefore elevated urinary concentrations of estrone and estrone conjugates may be indicative of luteal function. © 1993 Wiley‐Liss, Inc. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Primatology Wiley

Circulating and excreted hormones during the ovarian cycle in the cotton‐top tamarin, Saguinus oedipus

Loading next page...
 
/lp/wiley/circulating-and-excreted-hormones-during-the-ovarian-cycle-in-the-0jVDGs0r0j
Publisher
Wiley
Copyright
Copyright © 1993 Wiley‐Liss, Inc., A Wiley Company
ISSN
0275-2565
eISSN
1098-2345
DOI
10.1002/ajp.1350310106
Publisher site
See Article on Publisher Site

Abstract

Five parous, cycling cotton‐top tamarin females were used to compare circulating and urinary profiles of the major reproductive hormones during the ovarian cycle. Blood samples were collected on unanesthetized, hand restrained females three times per week for 25 days and first morning void urine was collected daily for 30–40 days including the serum sampling period. Serum and urine samples were analyzed for estrone, estradiol, and bioactive LH. Additionally, serum was analyzed for progesterone and urine for estrone conjugates (E1G) and immunoreactive LH. Both serum and urinary hormonal profiles revealed ovarian cyclicity in four females; the fifth one stopped cycling during the study. All hormones were referenced to the urinary immunoreactive LH peak. Urinary estrone conjugates followed similar profiles to serum progesterone. Progesterone levels increased two‐ to threefold on the day of the urinary immunoreactive LH peak. Peak levels of circulating bioactive LH occurred on the same day or the day preceding the urinary bioactive and immunoreactive LH peak for all four cycling females. Serum estradiol levels rose during the follicular phase and peaked prior to or on the day of the urinary LH peak while urinary estradiol levels did not rise until the day of the urinary LH peak. Serum and urinary estrone levels did not rise until the day of the urinary LH peak and remained high throughout the luteal phase. The measurement of urinary LH corresponded well with serum LH, establishing urinary LH as an important hormone for monitoring the ovulation in the tamarin. The highest circulating estradiol concentrations were found in the follicular phase of the cycle, but estradiol did not appear in urine during the follicular phase of the cycle. Elevated estrone levels occur during the luteal phase following the progesterone pattern, and therefore elevated urinary concentrations of estrone and estrone conjugates may be indicative of luteal function. © 1993 Wiley‐Liss, Inc.

Journal

American Journal of PrimatologyWiley

Published: Jan 1, 1993

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off