Results 91 to 100 of about 108,095 (254)

INTACT PROTEIN ABSORPTION BY THE FISH GUT. 2. APPLICATION POTENTIAL AND LIMITATIONS [PDF]

open access: yesCroatian Journal of Fisheries, 1998
One of the major roles of the fish gut is to exclude antigenic materials. Nevertheless, considerable evidence has accumulated to suggest that the vertebrate gut, in general, is naturally permeable to ingested macromolecules.
Emin Teskeredžić   +3 more
doaj  

Tachykinin: recent developments and novel roles in health and disease

open access: yesBiomolecular Concepts, 2014
Over 80 years has passed since the discovery of substance P (SP), and a variety of peptides of the tachykinin (TK) family have been found and investigated.
Onaga Takenori
doaj   +1 more source

Precocious puberty in children - diagnosis, causes and treatment

open access: yesJournal of Education, Health and Sport, 2019
Physiological sexual maturation begins with pulsatile gonadoliberin (GnRH) secretion by neurons in the arcuate hypothalamic nuclei. GnRH affects the synthesis and pulsatile secretion of the anterior pituitary gonadotropic hormones - LH and FSH, which ...
Adrianna Krupa   +4 more
doaj   +1 more source

Update on male reproductive endocrinology. [PDF]

open access: yes, 2018
Practitioners of male reproductive and sexual medicine must have an intimate understanding of the physiology of male reproductive endocrinology, as such a knowledge is the cornerstone on which hormonal treatments are based.
Clavijo, Raul, Hsiao, Wayland
core   +1 more source

An update on the potential for male contraception : emerging options [PDF]

open access: yes, 2013
The human population continues to grow and is estimated to rise to 10.1 billion by the end of the century. Therefore, there is still an unmet need for safe and highly effective contraceptive options for both men and women.
Alsaadi, Manal   +5 more
core   +1 more source

Molecular Investigations on Angiogenesis and Oxidative Stress in Roe Deer (Capreolus capreolus) Bucks' Testes Throughout the Reproductive Cycle

open access: yesJournal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Animals with seasonal reproductive cycles, as the Roe deer (Capreolus capreolus), have developed mechanisms to synchronize reproduction with the environmental cycle in order to optimize reproductive success through melatonin. Angiogenesis and oxidative stress are key processes in spermatogenesis, contributing to testicular remodeling and ...
Ilaria Troisio   +7 more
wiley   +1 more source

Morphological evidence for enhanced kisspeptin and neurokinin B signaling in the infundibular nucleus of the aging man. [PDF]

open access: yes, 2012
Peptidergic neurons synthesizing kisspeptin (KP) and neurokinin B (NKB) in the hypothalamic infundibular nucleus have been implicated in negative sex steroid feedback to GnRH neurons. In laboratory rodents, testosterone decreases KP and NKB expression in
Bloom, Stephen R.   +11 more
core   +1 more source

The Oocyte/Antral Follicle Count Index: Does Maximizing Oocyte Yield Translate into Better Assisted Reproductive Technology Outcomes?

open access: yesJournal of Ultrasound in Medicine, EarlyView.
Objectives Whether aspiration of more oocytes than the antral follicle count (AFC) is beneficial for the current and future products of assisted reproductive technologies (ART) cycles. Methods Data of the first oocyte aspiration for intracytoplasmic sperm injection performed between 2018 and 2022 in attempt to conceive (ICSI, n = 399) or for planned ...
Shir Danieli‐Gruber   +7 more
wiley   +1 more source

Treatment with Depot Leuprolide Acetate in Girls with Idiopathic Precocious Puberty: What Parameter should be Used in Deciding on the Initial Dose?

open access: yesJCRPE, 2020
Objective:Doses of gonadotropin releasing hormone (GnRH) analogues used to treat idiopathic central precocious puberty (iCPP) vary among clinicians. Study aims were to evaluate the efficacy of a monthly 3.75 mg dose of leuprolide acetate (LA) to suppress
Doğuş Vurallı   +6 more
doaj   +1 more source

Parathyroid localization [PDF]

open access: yes, 1986
Twenty-nine consecutive patients with suspected primary hyperparathyroidism were examined preoperatively using ultrasound, sonographically guided fine needle aspiration, and aspirate immunostaining for PTH.
Borisch, B.   +7 more
core   +1 more source

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