Testosterone’s Short-Term Positive Effect on Luteinizing-Hormone Secretory-Burst Mass and Its Negative Effect on Secretory-Burst Frequency Are Attenuated in Middle-Aged Men
نویسندگان
چکیده
منابع مشابه
Secretagogues govern GH secretory-burst waveform and mass in healthy eugonadal and short-term hypogonadal men.
BACKGROUND GH pulses are putatively initiated by hypothalamic GH-releasing hormone (GHRH), amplified by GH-releasing peptide (GHRP), and inhibited by somatostatin (SS). OBJECTIVE To ascertain how secretagogues control the waveform (time evolution of release rates) as well as the mass of secretory bursts. DESIGN We quantified the shape of GH secretory bursts evoked by continuous combined i.v...
متن کاملPhysiological control of pituitary hormone secretory-burst mass, frequency, and waveform: a statistical formulation and analysis.
The present study investigates the time-varying control of pituitary hormone secretion over the day and night (D/N). To this end, we implemented an analytical platform designed to reconstruct simultaneously 1) basal (nonpulsatile) secretion, 2) single or dual secretory-burst waveforms, 3) random effects on burst amplitude, 4) stochastic pulse-renewal properties, 5) biexponential elimination kin...
متن کاملthe effect of lexical and grammatical collocation instruction through input flooding versus awareness raising on short-term and delayed retention as well a active use
this study attempted to explore if teaching english collocations through two different modes of awareness-raising and input flooding has any possible differential effect on immediate retention as well as retention in a delayed assessment. it also compared the possible differential effect of teaching english collocations implicitly and explicitly on actively using the items in writing. m...
15 صفحه اولan investigation of the impact of self monitoring on langauge teachers motivational practice and its effect on learners motivation
the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...
Effect of early tail-docking on luteinizing hormone pulse frequency in fat-tailed Tuj ewe-lambs
The aim of the study was to investigate the effect of tail-docking on the LH pulse frequency in femaleTuj lambs. Twelve female lambs were assigned into two equal groups. A rubber ring was applied to the baseof the tail for shedding off. Blood samples were collected for 8 h in the 4th and 8th months of age todetermine pulsatile secretion of LH. Starting from the age of 6 months, blood samples we...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Clinical Endocrinology & Metabolism
سال: 2009
ISSN: 0021-972X,1945-7197
DOI: 10.1210/jc.2009-0135