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1. Salivary testosterone concentration, anxiety, perceived performance and ratings of perceived exertion in basketball players during semi-final and final matches

Author:
de Arruda, Ademir Felipe Schultz; Aoki, Marcelo Saldanha; Drago, Gustavo; Moreira, Alexandre
Source:
Physiology & behavior 2019 v.198 pp. 102-107
ISSN:
0031-9384
Subject:
testosterone,   etc   ; anxiety; males; saliva; youth;     Show all 5 Subjects
Abstract:
... The aim of this study was to examine the effect of playing semi-final (SFM) and final (FM) matches on salivary testosterone (T) concentration, anxiety, session rating of perceived exertion (session-RPE) and perceived performance (PP) in elite male youth basketball players. Data from 25 players who participated ≥15 min in 6 assessed matches consisting of SFM (n = 3; 1 match for each age-category [U ...
DOI:
10.1016/j.physbeh.2018.10.008

2. Intrasexual competition mediates the relationship between men's testosterone and mate retention behavior

Author:
Arnocky, Steven; Albert, Graham; Carré, Justin M.; Ortiz, Triana L.
Source:
Physiology & behavior 2018 v.186 pp. 73-78
ISSN:
0031-9384
Subject:
testosterone,   etc   ; males; men; models;     Show all 4 Subjects
Abstract:
... Previous research has established a link between testosterone concentrations in males and their mating effort as it relates to their mate seeking behaviors. However, very little research has analyzed how variability in basal testosterone concentration of males affects their mating effort once they have secured a romantic partner. In a sample of undergraduate men, the relationship between testoster ...
DOI:
10.1016/j.physbeh.2018.01.007

3. INSL3 in the muscolo-skeletal system

Author:
De Toni, Luca; Agoulnik, Alexander I.; Sandri, Marco; Foresta, Carlo; Ferlin, Alberto
Source:
Molecular and cellular endocrinology 2019 v.487 pp. 12-17
ISSN:
0303-7207
Subject:
testosterone,   etc   ; hormonal regulation; muscles; peptides; phenotype; skeletal muscle; testes; therapeutics;     Show all 8 Subjects
Abstract:
... Bone and skeletal muscle are currently considered a unified functional unit, showing complementary regulation at mechanical, biochemical, paracrine and metabolic levels. This functional unit undergoes a central hormonal regulation which is mainly ascribed to sex steroids and, in particular, androgens. However, recent evidence suggest that another testicular hormone lines the classical anabolic eff ...
DOI:
10.1016/j.mce.2018.12.021

4. Does a change in sleep timing increase testosterone in young adult men?

Author:
Zander, Jacqueline; Faßl, Corina; Randler, Christoph
Source:
Biological rhythm research 2019 v.50 no.2 pp. 214-221
ISSN:
1744-4179
Subject:
testosterone,   etc   ; actigraphy; gonads; men; saliva; sleep; women; young adults;     Show all 8 Subjects
Abstract:
... Men are more evening oriented than women. These sex difference might be a result of gonadal hormones, especially of testosterone. Here, we tested for a causal relationship by shifting the sleep timing of young men to one hour later and assessed the influence on saliva testosterone. 50 men participated in our study (31 experimental, 19 control group). Sleep timing was measured with actigraphy. One ...
DOI:
10.1080/09291016.2018.1440767

5. Daily administration of a GnRH analogue enhances sperm quality in bucks during the non-breeding season

Author:
Giriboni, Julia; Gökdal, Özdal; Eren, Vadullah; Yaralı, Engin; Santiago-Moreno, Julián; Ungerfeld, Rodolfo
Source:
Animal reproduction science 2019 v.200 pp. 43-50
ISSN:
0378-4320
Subject:
testosterone,   etc   ; acetates; bucks; gonadotropin-releasing hormone; sperm quality; tail;     Show all 6 Subjects
Abstract:
... The aim of this study was to determine if daily administration of a GnRH analogue (buserelin acetate) to bucks during the non-breeding season increases testosterone concentration and improves sperm quality. Five bucks received a daily dose of buserelin for 10 days, starting on Day 0 (first administration), and another five bucks remained as controls. Testosterone concentrations were greater in tre ...
DOI:
10.1016/j.anireprosci.2018.11.009

6. 152 Correlation between testicular and accessory sex glands biometric characteristics in Nellore and Caracu bulls

Author:
Rodrigues, N. N.; Vrisman, D. P.; Rossi, G. F.; Freitas, A. P.; Zorzetto, M. F.; Souza, L. L.; Taira, A. R.; Vicente, W. R. R.; Monteiro, F. M.; Oliveira, M. E. F.
Source:
Reproduction, fertility, and development 2019 v.31 no.1 pp. 201
ISSN:
1031-3613
Subject:
testosterone,   etc   ; Nellore; biometry; bulls; seminal vesicles; testes; transducers (equipment); ultrasonography;     Show all 8 Subjects
Abstract:
... The objective of this study was to determine the correlation between testicular and accessory sex gland measurements in Nellore (Bos taurus indicus) and Caracu (Bos taurus taurus) bulls. Bulls (n=282, including 203 Nellore from 12 to 61 months and 79 Caracu from 12 to 48 months) had their reproductive organs measured. Scrotal circumference was measured with a tape. Length (dorso-ventral) and diame ...
DOI:
10.1071/RDv31n1Ab152

7. Mental fatigue impairs technical performance and alters neuroendocrine and autonomic responses in elite young basketball players

Author:
Moreira, Alexandre; Aoki, Marcelo Saldanha; Franchini, Emerson; da Silva Machado, Daniel Gomes; Paludo, Ana Carolina; Okano, Alexandre Hideki
Source:
Physiology & behavior 2018 v.196 pp. 112-118
ISSN:
0031-9384
Subject:
testosterone,   etc   ; alpha-amylase; cortisol; heart rate; saliva;     Show all 5 Subjects
Abstract:
... This study investigated the effects of mental exertion on Small-Sided-Games (SSG) technical performance, salivary testosterone (T), cortisol (C), and alpha-amylase (sAA) responses in 32 basketball players (15.2 ± 1.2 years; 180 ± 11 cm; 72 ± 15 kg). Technical performance and heart rate (HR) were assessed on two occasions, preceded by a 30-min incongruent Stroop task (mentally exertion treatment) o ...
DOI:
10.1016/j.physbeh.2018.08.015

8. Testosterone influences volitional, but not reflexive orienting of attention in human males

Author:
Hansen, Steve; McAuliffe, Jim; Goldfarb, Bernard; Carré, Justin M.
Source:
Physiology & behavior 2017 v.175 pp. 82-87
ISSN:
0031-9384
Subject:
testosterone,   etc   ; dissociation; humans; males; placebos;     Show all 5 Subjects
Abstract:
... The impact of testosterone (T) on the exogenous (Experiment 1) and endogenous (Experiment 2) orienting of visual attention in males was examined. Sixteen male participants completed both an exogenous and an endogenous cuing task on two separate days. About 2–3h prior to testing, either a placebo or a dose of T was administered. The inhibition of return (IOR) phenomenon was observed during the exog ...
DOI:
10.1016/j.physbeh.2017.03.032

9. Effects of in utero androgen excess and metformin treatment on hepatic functions

Author:
Abruzzese, Giselle Adriana; Heber, María Florencia; Ferrer, María José; Ferreira, Silvana Rocío; Silva, Aimé Florencia; Motta, Alicia Beatriz
Source:
Molecular and cellular endocrinology 2019 v.491 pp. 110416
ISSN:
0303-7207
Subject:
testosterone,   etc   ; adults; anovulation; females; glucose; insulin; metformin; oral administration; phenotype; pregnancy; progeny; rats;     Show all 12 Subjects
Abstract:
... This study aimed to evaluate the role of prenatal hyperandrogenization in liver functions and the extent of metformin as treatment. Pregnant rats were hyperandrogenized with subcutaneous testosterone (1mg/rat) between 16 and 19 of pregnancy. Prenatally hyperandrogenized (PH) female offspring displayed, at the adult life, two phenotypes; a PH irregular ovulatory phenotype (PHiov) and a PH anovulato ...
DOI:
10.1016/j.mce.2019.03.006

10. Preparation for fatherhood: A role for olfactory communication during human pregnancy?

Author:
Allen, C.; Cobey, K.D.; Havlíček, J.; Singleton, F.P.; Hahn, A.C.; Moran, C.N.; Roberts, S.C.
Source:
Physiology & behavior 2019 v.206 pp. 175-180
ISSN:
0031-9384
Subject:
testosterone,   etc   ; adults; humans; infants; males; men; odors; pregnancy; pregnant women; social dominance;     Show all 10 Subjects
Abstract:
... There is evidence across a range of bi-parental species that physiological changes may occur in partnered males prior to the birth of an infant. It has been hypothesised that these hormonal changes might facilitate care-giving behaviours, which could augment infant survival. The mechanism that induces these changes has not been identified, but evidence from several species suggests that odour may ...
DOI:
10.1016/j.physbeh.2019.03.030

11. Testosterone, facial and vocal masculinization and low environmentalism in men

Author:
Landry, Nicholas; Desrochers, Jessica E.; Hodges-Simeon, Carolyn; Arnocky, Steven
Source:
Journal of environmental psychology 2019
ISSN:
0272-4944
Subject:
testosterone,   etc   ; attitudes and opinions; cortisol; females; gender differences; males; masculinization; men; phenotype; psychology;     Show all 10 Subjects
Abstract:
... Robust sex differences in environmentalism have been observed, such that males express fewer pro-environmental attitudes than their female counterparts. To date, most explanations of this sex difference have relied upon socio-cultural and psychological explanations. The present study sought to extend this inquiry by examining the role of testosterone (T), its interaction with cortisol (C), as well ...
DOI:
10.1016/j.jenvp.2019.05.007

12. Rapid testosterone-induced growth of the medial preoptic nucleus in male canaries

Author:
Shevchouk, Olesya T.; Ball, Gregory F.; Cornil, Charlotte A.; Balthazart, Jacques
Source:
Physiology & behavior 2019 v.204 pp. 20-26
ISSN:
0031-9384
Subject:
testosterone,   etc   ; aromatase; brain; canaries; castration; females; males; motivation; neurons; photoperiod; photosensitivity; songbirds;     Show all 12 Subjects
Abstract:
... Testosterone activates singing within days in castrated male songbirds but full song quality only develops after a few weeks. Lesions of the medial preoptic nucleus (POM) inhibit while stereotaxic testosterone implants into this nucleus increase singing rate suggesting that this site plays a key role in the regulation of singing motivation. Testosterone action in the song control system works in p ...
DOI:
10.1016/j.physbeh.2019.02.007

13. Effects of non-contingent cocaine on 3alpha-androstanediol. I. Disruption of male sexual behavior

Author:
Kohtz, Amy S.; Walf, Alicia A.; Frye, Cheryl A.
Source:
Physiology & behavior 2019 v.203 pp. 120-127
ISSN:
0031-9384
Subject:
testosterone,   etc   ; cocaine; dose response; estradiol; frontal lobe; hippocampus; hypothalamus; males; metabolism; metabolites; motivation; rats; sexual behavior;     Show all 13 Subjects
Abstract:
... One of the hallmarks of drug abuse is a reduction in the salience of, and motivation for, natural rewards, such as mating. The effects of psychostimulants on male sexual interest and performance are conflicting; use of psychostimulants can produce increases in risky sexual behaviors but have detrimental effects on sexual ability. We hypothesize that these conflicting effects on sexual behavior are ...
DOI:
10.1016/j.physbeh.2017.12.017

14. Three populations of adult Leydig cells in mouse testes revealed by a novel mouse HSD3B1-specific rat monoclonal antibody

Author:
Yokoyama, Chikako; Chigi, Yuta; Baba, Takashi; Ohshitanai, Atsushi; Harada, Yumi; Takahashi, Fumiya; Morohashi, Ken-ichirou
Source:
Biochemical and biophysical research communications 2019 v.511 no.4 pp. 916-920
ISSN:
0006-291X
Subject:
testosterone,   etc   ; Leydig cells; adults; gene expression; genes; genetic markers; isomerases; males; mice; monoclonal antibodies; rats;     Show all 11 Subjects
Abstract:
... Leydig cells play a pivotal function in the synthesis of a male sex steroid, testosterone. The ability of the steroid production is dependent on the expression of the steroidogenic genes, such as HSD3B (3β-hydroxysteroid dehydrogenase/Δ5- Δ4 isomerase). It has been established that two different types of Leydig cells, fetal Leydig cells (FLCs) and adult Leydig cells (ALCs), are developed in mammal ...
DOI:
10.1016/j.bbrc.2019.02.100

15. Fertilization and male fertility in the rotifer Brachionus calyciflorus in the presence of three environmental endocrines

Author:
Jin, Sichen; Shao, Li; Song, Xiaoping; Xiao, Jiahua; Ouyang, Kai; Zhang, Kailei; Yang, Jiaxin
Source:
Chemosphere 2019 v.220 pp. 146-154
ISSN:
0045-6535
Subject:
testosterone,   etc   ; Brachionus calyciflorus; drugs; ecotoxicology; endocrine-disrupting chemicals; male fertility; males; progesterone; reproductive behavior; swimming;     Show all 10 Subjects
Abstract:
... Many studies investigated the effects of environmental endocrine disruptors with the rotifer Brachionus calyciflorus. However, they focused on the reproductive behavior of rotifers, especially male–female fertilization, as a parameter in ecotoxicological and endocrine studies. In the present study, we used two environmental hormones (progesterone and testosterone) and one nonsteroidal antiandrogen ...
DOI:
10.1016/j.chemosphere.2018.12.097

16. Discovery of methylpyrimidine ring-fused diterpenoid analogs as a novel testosterone synthesis promoter

Author:
Bai, Jie; Xie, Jia; Wang, Li-Ting; Xing, Yajing; Jiang, Qian-Ru; Yang, Fan; Tang, Jie; Yi, Zhengfang; Qiu, Wen-Wei
Source:
RSC advances 2019 v.9 no.17 pp. 9709-9717
ISSN:
2046-2069
Subject:
testosterone,   etc   ; Leydig cells; autophagy; cytotoxicity; diterpenoids; genetic markers; icariin; mice; secretion; therapeutics;     Show all 10 Subjects
Abstract:
... Herein we screened our small synthetic library of diterpenoid analogs for hit compounds on promoting testosterone synthesis and the methylpyrimidine ring-fused diterpenoid analog 7 was obtained as the hit. Based on the hit, a series of derivatives were designed, synthesized and evaluated for their effects on testosterone secretion in mouse Leydig TM3 cells. Most of the derivatives showed better ac ...
DOI:
10.1039/c9ra00702d

17. Dietary boron supplementation and its impact on testicular function, thyroid activity and serum calcium in rams

Author:
Ibrahim, Taha Bakr; Abdel-Wahab, Ahmed; El-Anwar, Ahmed Hashim; Ibrahim, Shawky Soliman
Source:
Small ruminant research 2019
ISSN:
0921-4488
Subject:
testosterone,   etc   ; blood serum; body weight changes; boric acid; boron; calcium; diet; rams; semen quality; testes;     Show all 10 Subjects
Abstract:
... The current study aimed to investigate the effects of dietary boron (B) supplementation on testicular function, thyroid activity and serum calcium (Ca) in rams. Therefore, twelve rams (4 months old and 17.6 ± 1.26 kg average body weight) were divided equally into two groups. Rams of control group (CNT group) fed basal ration ad libitum. In the second group (B group), the rams fed basal ration plus ...
DOI:
10.1016/j.smallrumres.2019.03.008

18. Investigation of the efficacy of the GnRH agonist deslorelin in mitigating intraspecific aggression in captive male Amur leopards (Panthera pardus orientalis)

Author:
Harley, Jessica J.; Power, Aisling; Stack, John D.
Source:
Zoo biology 2019 v.38 no.2 pp. 214-219
ISSN:
0733-3188
Subject:
testosterone,   etc   ; Panthera pardus; aggression; animals; carnivores; deslorelin acetate; gonadotropin-releasing hormone; males; marking behavior; physiology;     Show all 10 Subjects
Abstract:
... Housing bachelor groups is a necessary aspect of the care and husbandry of non‐breeding individuals in zoological collections. Intraspecific aggressive behaviors may occur in this setting despite management strategies designed to mitigate these behaviors. Androgens (including testosterone) are associated with aggression in male species and interventional techniques to alter the animals’ physiology ...
DOI:
10.1002/zoo.21475

19. Vitamin D supplementation does not prevent the testosterone decline in males with advanced heart failure: the EVITA trial

Author:
Zittermann, Armin; Ernst, Jana B.; Prokop, Sylvana; Fuchs, Uwe; Dreier, Jens; Kuhn, Joachim; Knabbe, Cornelius; Berthold, Heiner K.; Gouni-Berthold, Ioanna; Gummert, Jan F.; Börgermann, Jochen; Pilz, Stefan
Source:
European journal of nutrition 2019 v.58 no.2 pp. 673-680
ISSN:
1436-6207
Subject:
testosterone,   etc   ; cholecalciferol; heart failure; males; mortality; observational studies; patients; placebos; sex hormone-binding globulin;     Show all 9 Subjects
Abstract:
... PURPOSE: Observational studies indicate a positive association between circulating 25-hydroxyvitamin D (25OHD) and testosterone (T) concentrations. Because low 25OHD concentrations and T deficiency are considered to be a generalized phenomenon in patients with advanced heart failure (HF), we aimed to investigate whether vitamin D supplementation has beneficial effects on T indices in these patient ...
DOI:
10.1007/s00394-018-1666-5

20. The impact of a competitive learning environment on hormonal and emotional stress responses and skill acquisition and expression in a medical student domain

Author:
Cook, Christian J.; Crewther, Blair T.
Source:
Physiology & behavior 2019 v.199 pp. 252-257
ISSN:
0031-9384
Subject:
testosterone,   etc   ; anxiety; cortisol; cross-over studies; males; memory; psychological stress; stress response; students;     Show all 9 Subjects
Abstract:
... The concept of competition has implications for educational contexts, as hormonal and emotional changes under competitive stress can modulate learning and memory processes. This study examined the impact of a competitive learning environment and associated hormonal and emotional responses on skill acquisition and expression in a medical domain. Using a cross-over design, sixteen male medical stude ...
DOI:
10.1016/j.physbeh.2018.11.027