Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes.

Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes. Abstract Text:

L N Kanchev,B M Stankov,H Dobson,

The object of our experiments was to characterize the response of plasma follicle stimulating hormone (FSH) within minutes of an i.v. injection of high or low doses of gonadotrophin releasing hormone (GnRH), especially in relation to contemporary changes in luteinizing hormone (LH) concentrations. In the deep anoestrous period (June), three intact ewes and two ovariectomized ewes were injected with 1 mug synthetic GnRH followed 2 h later by a second identical injection. A week later, the same regimen was repeated with the same sheep but with 50 mug GnRH after an interval of 5 h 20 min. Blood samples were collected every 15 sec for 15 min after each injection (early release), then at longer intervals (main release) till the next treatment, followed by sampling for a further 6-h period after the second treatment. FSH was released as soon as the second minute after GnRH injection in all ewes. The mean pituitary FSH response, during this early release, in intact and ovariectomized ewes was similar after either 1 or 50 mug GnRH. However, the main release was less pronounced in the ovariectomized sheep and was not stimulated after the second treatment in all sheep. Three other ewes were injected with 40 mug GnRH and sampled every 15 sec for seven, 6-min periods during the period of release to compare FSH and LH secretion. The profiles reflected a similarity in sensitivity and responsiveness to GnRH, especially soon after GnRH injection. Increases in both hormones were formed by several grouped associated spikes. It is suggested that a readily releasable pool of FSH exists in the ewe. There are probably differences in the mechanisms of synthesis and/or release between pituitary FSH and LH.

Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes. Publishing Authors By Initials

LN Kanchev,BM Stankov,H Dobson,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Theriogenology

VOLUME: 28

Page Numbers: 435-44

Journal Abbreviation: Theriogenology

ISSN: 0093-691X

DAY: 26

MONTH: Oct

YEAR: 1987

Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 421510

Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes.

AFFILIATION: Institute of Biology and Immunology of Reproduction, 73, Lenin Boulevard, Sofia 1113, Bulgaria.

Country: United States

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Theriogenology

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes Related Publications

• A lifestyle view of life-history evolution.
• Achievement of Energy Focus for Distance-of-Flight Mass Spectrometry with Constant Momentum Acceleration and an Ion Mirror.
• Adenosine A1 and A2A receptor effects on G-protein cycling in beta-adrenergic stimulated ventricular membranes.
• Agency urges researchers to make more use of yellow card data.
• An experimental investigation of the cognitive vulnerability to depression.
• An overview of faecal incontinence in children.
• Apolipoprotein E-derived antimicrobial peptide analogues with altered membrane affinity and increased potency and breadth of activity.
• CONVERGENCE.
• Dexamethasone and ondansetron incompatibility in polypropylene syringes.
• Early pituitary follicle stimulating hormone response to gonadotrophin releasing hormone in ewes.
• Economic cost of difficult calvings in the United Kingdom dairy herd.
• Effects of chronic treatment with a GnRH agonist on oestrous behaviour and on the secretion of LH and progesterone in the ewe.
• England and Wales are among European countries at highest risk of measles epidemic.
• HEPATIC CUTANEOUS PORPHYRIA. RESPONSE OF A PATIENT TO TREATMENT WITH ADENOSINE-5-MONOPHOSPHATE.
• Herpes simplex virus infection causes cellular beta-amyloid accumulation and secretase upregulation.
• Human papillomavirus vaccines: who should get them and why?
• Mapping long-range interactions in alpha-synuclein using spin-label NMR and ensemble molecular dynamics simulations.
• Meta-analysis of studies of passive smoking and lung cancer: effects of study type and continent.
• Nocturnal enuresis in children.
• Perceptions of Saskatchewan community pharmacists regarding a prior-authorization program.
• Preconditioning and postconditioning: innate cardioprotection from ischemia-reperfusion injury.
• Projected impacts of climate and land-use change on the global diversity of birds.
• Rose revisited: a "middle road" prevention strategy to reduce noncommunicable chronic disease risk.
• Study shows effect on life expectancy of greater spending on treatment.
• Teller Acuity Card norms with and without use of a testing stage.
• Training the trainers.
• Unnecessary C-sections.
• Variation in number of women being recalled after breast cancer screening needs to be looked into.
• Weighted multimorbidity indexes predicted mortality, health service use, and health-related quality of life in older women.
• gamma-amino butyric acid control of arginine vasopressin release from the ewe hypothalamus in vitro: sensitivity to oestradiol.