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363157

Gonadal steroids and leptin dynamics during estrous cycle of ewe: a correlative study

Article

Last updated: 03 Jan 2025

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Subjects

-

Tags

Physiology/endocrinology

Abstract

Leptin, as a hormone, acts as a signal for the energy status and affects reproductive performance. The current study investigated dynamics of gonadal steroids and leptin during estrous cycle in ewe. For this purpose synchronization of estrous cycle in ewes was accomplished by insertion of intravaginal sponge (Chronogest; Intervet Ltd.,) for 14 days followed by I/M injection of 3001U equine Chorionic Gonadotropin (Folligon; Intervet Ltd.,) for each ewe on day of sponge removal (day0), blood samples were collected during follicular and luteal phases for determination of leptin, estradiol and progesterone hormones by ELISA technique. The obtained results showed fluctuation in levels of leptin, where a significant decrease was recorded during follicular phase and an increase during luteal phase. Estradiol levels were highest during 1* 2 days of the 17 and 18 days estrous cycle, reached lowest levels during days 7, 9, 11, 13 and 15of the 17 days estrous cycle.As for the 18 days estrous cycle the estradiol level remained low for one more day (17% day). Progesterone levels were lowest during first 3 days of the 17 days estrous cycle, while during the 18 days estrous cycle, low progesterone levels were detected up to the fifth day of the cycle; progesterone peaked at day 11 of the 17 and 18 days estrous cycle.

DOI

10.21608/vmjg.2016.363157

Keywords

estradiol, reproductive, Estrous cycle, gonadal steroids, Progesterone levels

Authors

First Name

Essawy

Last Name

S

MiddleName

-

Affiliation

Department of Physiology, Faculty of Veterinary Medicine, Cairo University, Egypt

Email

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City

-

Orcid

-

First Name

Sawiress

Last Name

R

MiddleName

-

Affiliation

Department of Physiology, Faculty of Veterinary Medicine, Cairo University, Egypt

Email

-

City

-

Orcid

-

First Name

Ogaly

Last Name

A

MiddleName

-

Affiliation

Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Egypt

Email

-

City

-

Orcid

-

First Name

Marel

Last Name

F

MiddleName

-

Affiliation

Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Egypt

Email

-

City

-

Orcid

-

First Name

Hendawy

Last Name

Kh

MiddleName

-

Affiliation

Department of Physiology, Faculty of Veterinary Medicine, Cairo University, Egypt

Email

-

City

-

Orcid

-

Volume

62

Article Issue

2

Related Issue

47597

Issue Date

2016-04-01

Receive Date

2024-07-01

Publish Date

2016-04-01

Page Start

49

Page End

57

Print ISSN

1110-1423

Online ISSN

2537-1045

Article File

VMJG_Volume 62_Issue 2_Pages 49-57.pdf

PDF . 3.7MB

Link

https://vmjg.journals.ekb.eg/article_363157.html

Detail API

https://vmjg.journals.ekb.eg/service?article_code=363157

Order

363,157

Type

Original Article

Type Code

544

Publication Type

Journal

Publication Title

Veterinary Medical Journal (Giza)

Publication Link

https://vmjg.journals.ekb.eg/

MainTitle

Gonadal steroids and leptin dynamics during estrous cycle of ewe: a correlative study

Details

Type

Article

Created At

23 Dec 2024