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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Ganguly, Anita Meur, Sanat K. Ganguly, Indrajit |
Description | Country affiliation: India Author Affiliation: Ganguly A ( Division of Biochemistry and Food Science, Indian Veterinary Research Institute, Izatnagar, Bareilly, UP 243122, India. anitaganguly@gmail.com) |
Abstract | The objective of the present study was to isolate and purify high MW inhibin (≈ 129 kDa) from buffalo ovarian follicular fluid (buFF) and to investigate its biological activity. Throughout the process of purification, the inhibin fractions were evaluated for bioactivity by a specific, sensitive and uniformly reproducible bioassay in mice. The final biological activity of this preparation was tested in normal cycling adult female Barbari goats. Eight animals, randomly divided into two groups, were synchronized for estrus by administering PGF2 twice at an interval of ten days. Following synchronization, the treatment group (n=4) received (i.m.) 0.4 ml (240 µg protein total dose) of purified inhibin (MW ≈ 129 kDa) of buFF in the morning at 08.00 h for the four consecutive days of follicular phase, while the control group (n=4) received only saline (0.4 ml). Blood samples were collected from jugular vein immediately before the first injection and subsequent collections were made daily in the afternoon until day 8 of the experiment including four days (0, 1, 2, & 3 days) of the next cycle. FSH was assayed in all the samples by ELISA. The peripheral FSH concentration sharply declined from 1.854±0.137 to 0.979 ± 0.02 u/l, 8h after the administration of inhibin on the first day. The value in controls was 2.004 ± 0.132 u/l. For the duration of treatment of four consecutive days, the FSH level in experimental group remained significantly low (p<0.05) compared to control group. After cessation of treatment, the FSH level remained low on day 0 and 1 of the next cycle in the experimental and control animals. However, a significant rebound increase in plasma FSH levels occurred on day 2 & 3 (2.73 ± 0.179 & 1.849 ± 0.128 u/l) only in the experimental group compared to control animals (P<0.05). This increment might be caused by the rebound surge of FSH from anterior pituitary which further corroborates the effect of inhibin in treated animals. In conclusion, the present study demonstrates that the high MW form of inhibin (≈ 129 kDa) isolated from buFF has comparable biological activity as revealed by 31-32 kDa inhibin from other species. |
File Format | HTM / HTML |
ISSN | 00345288 |
Issue Number | 2 |
Volume Number | 95 |
e-ISSN | 15322661 |
Journal | Research in Veterinary Science |
Language | English |
Publisher | Elsevier |
Publisher Date | 2013-10-01 |
Publisher Place | Great Britain (UK) |
Access Restriction | Subscribed |
Subject Keyword | Discipline Veterinary Medicine Buffaloes Physiology Follicle Stimulating Hormone Blood Follicular Fluid Chemistry Goats Inhibins Pharmacology Animals Estrous Cycle Female Metabolism Mice Journal Article Randomized Controlled Trial Research Support, Non-u.s. Gov't |
Content Type | Text |
Resource Type | Article |
Subject Domain (in MeSH) | Urogenital System Eukaryota Hormones, Hormone Substitutes, and Hormone Antagonists Reproductive and Urinary Physiological Phenomena |
Subject | Veterinary |
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