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https://www.readbyqxmd.com/read/27909455/salivary-testosterone-levels-under-psychological-stress-and-its-relationship-with-rumination-and-five-personality-traits-in-medical-students
#1
Reza Afrisham, Sahar Sadegh-Nejadi, Omid SoliemaniFar, Wesam Kooti, Damoon Ashtary-Larky, Fatima Alamiri, Mohammad Aberomand, Sedigheh Najjar-Asl, Ali Khaneh-Keshi
OBJECTIVE: The purpose of this study was to evaluate the salivary testosterone levels under psychological stress and its relationship with rumination and five personality traits in medical students. METHODS: A total of 58 medical students, who wanted to participate in the final exam, were selected by simple random sampling. Two months before the exam, in the basal conditions, the NEO Inventory short form, and the Emotional Control Questionnaire (ECQ) were completed...
November 2016: Psychiatry Investigation
https://www.readbyqxmd.com/read/27907037/reliability-of-potential-pain-biomarkers-in-the-saliva-of-healthy-subjects-inter-individual-differences-and-intersession-variability
#2
Eva M Sobas, Roberto Reinoso, Rubén Cuadrado-Asensio, Itziar Fernández, Miguel J Maldonado, José C Pastor
AIM: Salivary cortisol, α-amylase (sAA), secretory IgA (sIgA), testosterone, and soluble fraction of receptor II of TNFα (sTNFαRII) could serve as objective pain measures, but the normal variability of these potential biomarkers is unknown. PATIENTS & METHODS: Saliva was collected with the passive secretion method from 34, pain-free subjects in two single samples at least 24 hours apart. Biomarker variation and intersession reliability were assessed with the intraclass correlation coefficient (ICC)...
2016: PloS One
https://www.readbyqxmd.com/read/27891109/pulling-rank-military-rank-affects-hormone-levels-and-fairness-in-an-allocation-experiment
#3
Benjamin Siart, Lena S Pflüger, Bernard Wallner
Status within social hierarchies has great effects on the lives of socially organized mammals. Its effects on human behavior and related physiology, however, is relatively little studied. The present study investigated the impact of military rank on fairness and behavior in relation to salivary cortisol (C) and testosterone (T) levels in male soldiers. For this purpose 180 members of the Austrian Armed Forces belonging to two distinct rank groups participated in two variations of a computer-based guard duty allocation experiment...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27875569/are-men-s-perceptions-of-sexually-dimorphic-vocal-characteristics-related-to-their-testosterone-levels
#4
Michal Kandrik, Amanda C Hahn, Joanna Wincenciak, Claire I Fisher, Katarzyna Pisanski, David R Feinberg, Lisa M DeBruine, Benedict C Jones
Feminine physical characteristics in women are positively correlated with markers of their mate quality. Previous research on men's judgments of women's facial attractiveness suggests that men show stronger preferences for feminine characteristics in women's faces when their own testosterone levels are relatively high. Such results could reflect stronger preferences for high quality mates when mating motivation is strong and/or following success in male-male competition. Given these findings, the current study investigated whether a similar effect of testosterone occurs for men's preferences for feminine characteristics in women's voices...
2016: PloS One
https://www.readbyqxmd.com/read/27865788/testosterone-and-immune-reproductive-tradeoffs-in-healthy-women
#5
Tierney K Lorenz, Julia R Heiman, Gregory E Demas
Although testosterone (T) has been characterized as universally immunosuppressive across species and sexes, recent ecoimmunology research suggests that T's immunomodulatory effects (enhancing/suppressing) depend on the organism's reproductive context. Very little is known about the immune effects of T in healthy females, and even less about how reproductive effort modulates the immune effects of T in humans. We investigated how the interaction between endogenous T and sexual activity predicted menstrual cycle-related changes in several measures of immunity: inflammation (indexed by interleukin-6, IL-6), adaptive immunity (indexed by immunoglobulin A, IgA), and functional immunity (indexed by bactericidal assay)...
November 17, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27816940/does-methylphenidate-reduce-testosterone-levels-in-humans-a-prospective-study-in-children-with-attention-deficit-hyperactivity-disorder
#6
Liang-Jen Wang, Miao-Chun Chou, Wen-Jiun Chou, Min-Jing Lee, Pao-Yen Lin, Sheng-Yu Lee, Yi-Hsuan Lee
BACKGROUND: Animal studies and case reports have suggested that methylphenidate (MPH) exerts adverse effects on gonadal hormones. This study aimed to determine whether MPH alters testosterone levels in children with attention-deficit/hyperactivity disorder (ADHD) through comparison of those with or without MPH treatment. METHODS: This 4-week, nonrandomized, prospective study conducted in Taiwan included 203 ADHD patients with a mean age of 8.7 years (boys: 75.8%)...
November 5, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27815128/preliminary-evidence-that-acute-stress-moderates-basal-testosterone-s-association-with-retaliatory-behavior
#7
Smrithi Prasad, Jayanth Narayanan, Vivien K G Lim, Gerald C H Koh, David S Q Koh, Pranjal H Mehta
A CONTRIBUTION TO A SPECIAL ISSUE ON HORMONES AND HUMAN COMPETITION: Testosterone is theorized to increase retaliation after social provocation. However, empirical evidence in support of these theories is mixed. The present research investigated whether acute stress causally suppresses testosterone's association with retaliation. We also explored sex differences in behavioral responses to acute stress. Thirty-nine participants (51.28% male) were randomly assigned to a high- or low-stress condition. Then participants engaged in 20 one-shot rounds of the ultimatum game, which was used to assess retaliatory behavioral responses to unfair treatment...
November 1, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27750480/the-relationship-of-salivary-testosterone-and-male-sexual-dysfunction-in-opioid-associated-androgen-deficiency-opiad
#8
Raquel Ajo, Ana Segura, Laura Mira, María-Del-Mar Inda, Rocío Alfayate, Angel Sánchez-Barbie, César Margarit, Ana M Peiró
BACKGROUND: Opioids are an effective treatment for chronic non-malignant pain (CNP). Long-term use risks and side effects such as opioid-induced androgen deficiency (OPIAD) exist. This could be measured by saliva testosterone (Sal-T). OBJECTIVES: To evaluate OPIAD in long-term opioid use in CNP patients. METHODS: A cross-sectional study included CNP male outpatients under opioid treatment. Total-Testosterone (Total-T), Free-Testosterone (Free-T), Bio-Testosterone (Bio-T) and Sal-T were measured...
October 18, 2016: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/27723957/potential-detection-of-low-dose-transdermal-testosterone-administration-in-blood-urine-and-saliva
#9
M Schönfelder, H Hofmann, T Schulz, T Engl, D Kemper, B Mayr, C Rautenberg, R Oberhoffer, D Thieme
Administration of low amounts of endogenous hormones - so-called micro-dosages - are supposed to represent a major challenge in doping analysis. To model such a situation, we have studied transdermal administrations of 2.4 mg/24 h testosterone patches and examined various steroid concentrations in blood, urine, and saliva of 11 volunteers. Multiple samples were collected at t = 0, 3, 6, 9, 24, 48, and 72 h in four different phases, i.e., all combinations with/without physical exercise and with/without testosterone...
October 10, 2016: Drug Testing and Analysis
https://www.readbyqxmd.com/read/27715321/changes-in-the-diurnal-rhythms-of-cortisol-melatonin-and-testosterone-after-2-4-and-7-consecutive-night-shifts-in-male-police-officers
#10
Marie Aarrebo Jensen, Åse Marie Hansen, Jesper Kristiansen, Kirsten Nabe-Nielsen, Anne Helene Garde
Night work is associated with a large range of acute health problems and possibly also health consequences in the long run. Yet, only very few field studies specifically investigate the effects of consecutive night shift on key physiological regulatory systems. In this field study, we investigated the effects of consecutive night shifts on three hormones, melatonin, cortisol, and testosterone, among police officers at work. More specifically, the aim was to investigate how the diurnal rhythms of melatonin, cortisol, and testosterone responded to two, four, and seven consecutive night shifts and a corresponding number of days for recovery...
August 11, 2016: Chronobiology International
https://www.readbyqxmd.com/read/27648594/prescribing-of-fda-approved-and-compounded-hormone-therapy-differs-by-specialty
#11
Ginger D Constantine, David F Archer, Shelli Graham, Brian A Bernick, Sebastian Mirkin
OBJECTIVE: To determine the prescribing patterns of general practitioners (GPs), obstetrician/gynecologists (OB/GYNs), and wellness physicians (WPs) of menopausal hormone therapy (HT) for both compounded (CHT) and Food and Drug Administration (FDA)-approved products, using a survey of US physicians. METHODS: Nine thousand one US physicians were invited to participate in a survey to report on their HT-prescribing patterns. Physicians were eligible if they prescribed HT for at least six patients per month...
October 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27645514/-low-testosterone-levels-in-body-fluids-are-associated-with-chronic-periodontitis-a-reality-or-a-myth
#12
Sergio Varela Kellesarian, Hans Malmstrom, Tariq Abduljabbar, Fahim Vohra, Tammy Varela Kellesarian, Fawad Javed, Georgios E Romanos
There is a debate over the association between low testosterone levels in body fluids and the occurrence of chronic periodontitis (CP). The aim of the present systematic review was to assess whether low testosterone levels in body fluids reflect CP. In order to identify studies relevant to the focus question: "Is there a relationship between low testosterone levels in body fluids and CP?" an electronic search without time or language restrictions was conducted up to June 2016 in indexed databases using different keywords: periodontitis, chronic periodontitis, periodontal diseases, testosterone, and gonadal steroid hormones...
September 19, 2016: American Journal of Men's Health
https://www.readbyqxmd.com/read/27611784/training-reduces-stress-in-human-socialised-wolves-to-the-same-degree-as-in-dogs
#13
Angélica da Silva Vasconcellos, Zsófia Virányi, Friederike Range, César Ades, Jördis Kristin Scheidegger, Erich Möstl, Kurt Kotrschal
The welfare of animals in captivity is of considerable societal concern. A major source of stress, especially for wild animals, is the lack of control over their environment, which includes not being able to avoid contact with human beings. Paradoxically, some studies have shown that interactions with human beings may improve the welfare of wild animals in captivity. Here, we investigated the behavioural (behaviours indicative of cooperation or stress) and physiological (variations in salivary cortisol concentrations) effects of the increasingly used practice of training wild animals as a way to facilitate handling and/or as behavioural enrichment...
2016: PloS One
https://www.readbyqxmd.com/read/27610099/the-salivary-microbiome-in-polycystic-ovary-syndrome-pcos-and-its-association-with-disease-related-parameters-a-pilot-study
#14
Lisa Lindheim, Mina Bashir, Julia Münzker, Christian Trummer, Verena Zachhuber, Thomas R Pieber, Gregor Gorkiewicz, Barbara Obermayer-Pietsch
BACKGROUND: Polycystic ovary syndrome (PCOS) is a common female endocrine condition of unclear etiology characterized by hyperandrogenism, oligo/amenorrhoea, and polycystic ovarian morphology. PCOS is often complicated by infertility, overweight/obesity, insulin resistance, and low-grade inflammation. The gut microbiome is known to contribute to several of these conditions. Recently, an association between stool and saliva microbiome community profiles was shown, making saliva a possible convenient, non-invasive sample type for detecting gut microbiome changes in systemic disease...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27589836/the-rate-of-change-in-declining-steroid-hormones-a-new-parameter-of-healthy-aging-in-men
#15
Andreas Walther, Michel Philipp, Niclà Lozza, Ulrike Ehlert
Research on healthy aging in men has increasingly focused on age-related hormonal changes. Testosterone (T) decline is primarily investigated, while age-related changes in other sex steroids (dehydroepiandrosterone [DHEA], estradiol [E2], progesterone [P]) are mostly neglected. An integrated hormone parameter reflecting aging processes in men has yet to be identified. 271 self-reporting healthy men between 40 and 75 provided both psychometric data and saliva samples for hormone analysis. Correlation analysis between age and sex steroids revealed negative associations for the four sex steroids (T, DHEA, E2, and P)...
August 31, 2016: Oncotarget
https://www.readbyqxmd.com/read/27579502/biobehavioral-factors-in-child-health-outcomes-the-roles-of-maternal-stress-maternal-child-engagement-salivary-cortisol-and-salivary-testosterone
#16
Licia M Clowtis, Duck-Hee Kang, Nikhil S Padhye, Cathy Rozmus, Michelle S Barratt
BACKGROUND: Exposure to high levels of maternal stress and ineffective maternal-child engagement (MC-E) may adversely affect child health-related outcomes. OBJECTIVE: The aim of this study was to examine the impact of maternal stress and MC-E on maternal and child biological responses (salivary cortisol and testosterone) and child health outcome in mother-child dyads of preschool children (3-5.9 years) in a low socioeconomic setting. METHODS: Observational and biobehavioral data were collected from 50 mother-child dyads in a preschool setting...
September 2016: Nursing Research
https://www.readbyqxmd.com/read/27554022/liquid-chromatography-quadrupole-linear-ion-trap-mass-spectrometry-for-quantitative-steroid-hormone-analysis-in-plasma-urine-saliva-and-hair
#17
Alexander Gaudl, Juergen Kratzsch, Yoon Ju Bae, Wieland Kiess, Joachim Thiery, Uta Ceglarek
Steroid analysis is being conquered by liquid chromatography tandem mass spectrometry (LC-MS/MS) benefiting from higher standardization, selectivity and diversity. Regarding high throughput in routine diagnostics rapid chromatography is mandatory. Introducing MS(3) (MS/MS/MS), specificity of mass spectrometric detection can be enhanced without sacrificing analysis time. 100mL of human plasma/serum, saliva, urine and 10-20mg of hair are used for the simultaneous quantification of 17α-hydroxyprogesterone, aldosterone, androstenedione, cortisol, cortisone, dehydroepiandrosterone sulfate (DHEAS), estradiol, progesterone, and testosterone using online solid phase extraction (SPE) LC-MS/MS or LC-MS(3)...
September 16, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27552539/salivary-testosterone-levels-and-health-status-in-men-and-women-in-the-british-general-population-findings-from-the-third-national-survey-of-sexual-attitudes-and-lifestyles-natsal-3
#18
S Clifton, W Macdowall, A J Copas, C Tanton, B G Keevil, D M Lee, K R Mitchell, N Field, P Sonnenberg, J Bancroft, C H Mercer, A M Wallace, A M Johnson, K Wellings, F C W Wu
CONTEXT: Salivary T (Sal-T) measurement by liquid chromatography-tandem mass spectroscopy resents the opportunity to examine health correlates of Sal-T in a large-scale population survey. OBJECTIVE: This study sought to examine associations between Sal-T and health-related factors in men and women age 18-74 years. DESIGN AND SETTING: Morning saliva samples were obtained from participants in a cross-sectional probability-sample survey of the general British population (Natsal-3)...
November 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27398882/gonads-and-strife-sex-hormones-vary-according-to-sexual-orientation-for-women-and-stress-indices-for-both-sexes
#19
Robert-Paul Juster, Daniel Almeida, Christopher Cardoso, Catherine Raymond, Philip Jai Johnson, James G Pfaus, Adrianna Mendrek, Annie Duchesne, Jens C Pruessner, Sonia J Lupien
This study assessed sexual orientation and psychobiological stress indices in relation to salivary sex hormones as part of a well-validated laboratory-based stress paradigm. Participants included 87 healthy adults that were on average 25 years old who self-identified as lesbian/bisexual women (n=20), heterosexual women (n=21), gay/bisexual men (n=26), and heterosexual men (n=20). Two saliva samples were collected fifteen minutes before and fifteen minutes after exposure to a modified Trier Social Stress Test to determine testosterone, estradiol, and progesterone concentrations via enzyme-immune assaying...
October 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27393866/digit-ratio-2d-4d-testosterone-cortisol-aggression-personality-and-hand-grip-strength-evidence-for-prenatal-effects-on-strength
#20
Evaldo Ribeiro, Nick Neave, Rosana Nogueiro Morais, Liam Kilduff, Suzan R Taylor, Marina Butovskaya, Bernhard Fink, John T Manning
BACKGROUND: Digit ratio (2D:4D) is a putative marker for prenatal testosterone and is correlated with performance in many sports. Low 2D:4D has been linked to strength but the evidence is mixed and strength is also influenced by mass, testosterone, and behavioural factors. It has been hypothesised that the 2D:4D-strength correlation may be strongest in challenge conditions when short-term changes occur in steroid hormones. AIMS: We tested this suggestion in men...
September 2016: Early Human Development
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