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Low free testosterone

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https://www.readbyqxmd.com/read/28827206/relationship-between-gonadal-function-and-cardiometabolic-risk-in-young-men-with-chronic-spinal-cord-injury
#1
Shannon D Sullivan, Mark S Nash, Eshetu Tefara, Emily Tinsley, Suzanne Groah
BACKGROUND: We previously reported that young men with chronic spinal cord injury (SCI) have a higher prevalence of testosterone deficiency when compared to an age-matched healthy control population. Young men with SCI are also at increased risk for developing cardiometabolic dysfunction after injury. It is unclear whether or not testosterone deficiency is associated with heightened cardiometabolic risk in men with SCI. OBJECTIVE: To investigate associations among levels of testosterone in young men with chronic SCI and surrogate markers of cardiometabolic risk...
August 18, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28794164/hiit-produces-increases-in-muscle-power-and-free-testosterone-in-male-masters-athletes
#2
P Herbert, L D Hayes, N F Sculthorpe, F M Grace
High-intensity interval training (HIIT) improves peak power output (PPO) in sedentary aging men but has not been examined in masters endurance athletes. Therefore, we investigated whether a six-week program of low-volume HIIT would (i) improve PPO in masters athletes and (ii) whether any change in PPO would be associated with steroid hormone perturbations. Seventeen male masters athletes (60 ± 5 years) completed the intervention, which comprised nine HIIT sessions over six weeks. HIIT sessions involved six 30-s sprints at 40% PPO, interspersed with 3 min active recovery...
October 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28791252/prostate-specific-antigen-5-years-following-stereotactic-body-radiation-therapy-for-low-and-intermediate-risk-prostate-cancer-an-ablative-procedure
#3
Shaan Kataria, Harsha Koneru, Shan Guleria, Malika Danner, Marilyn Ayoob, Thomas Yung, Siyuan Lei, Brian T Collins, Simeng Suy, John H Lynch, Thomas Kole, Sean P Collins
BACKGROUND: Our previous work on early PSA kinetics following prostate stereotactic body radiation therapy (SBRT) demonstrated that an initial rapid and then slow PSA decline may result in very low PSA nadirs. This retrospective study sought to evaluate the PSA nadir 5 years following SBRT for low- and intermediate-risk prostate cancer (PCa). METHODS: 65 low- and 80 intermediate-risk PCa patients were treated definitively with SBRT to 35-37.5 Gy in 5 fractions at Georgetown University Hospital between January 2008 and October 2011...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28790922/exercise-preserves-lean-mass-and-performance-during-severe-energy-deficit-the-role-of-exercise-volume-and-dietary-protein-content
#4
Jose A L Calbet, Jesús G Ponce-González, Jaime de La Calle-Herrero, Ismael Perez-Suarez, Marcos Martin-Rincon, Alfredo Santana, David Morales-Alamo, Hans-Christer Holmberg
The loss of fat-free mass (FFM) caused by very-low-calorie diets (VLCD) can be attenuated by exercise. The aim of this study was to determine the role played by exercise and dietary protein content in preserving the lean mass and performance of exercised and non-exercised muscles, during a short period of extreme energy deficit (~23 MJ deficit/day). Fifteen overweight men underwent three consecutive experimental phases: baseline assessment (PRE), followed by 4 days of caloric restriction and exercise (CRE) and then 3 days on a control diet combined with reduced exercise (CD)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28770092/association-of-admission-testosterone-level-with-st-segment-resolution-in-male-patients-with-st-segment-elevation-myocardial-infarction-undergoing-primary-percutaneous-coronary-intervention
#5
Ahmad Separham, Samad Ghaffari, Bahram Sohrabi, Naser Aslanabadi, Mozhgan Hadavi Bavil, Hasanali Lotfollahi
BACKGROUND: Low level of testosterone may be associated with cardiovascular diseases in men, as some evidence suggests a protective role for testosterone in cardiovascular system. Little is known about the possible role of serum testosterone in response to reperfusion therapy in ST-elevation myocardial infarction (STEMI) and its relationship with ST-segment recovery. The present study was conducted to evaluate the association of serum testosterone levels with ST-segment resolution following primary percutaneous coronary intervention (PPCI) in male patients with acute STEMI...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28728135/prostate-cancer-risk-and-dna-methylation-signatures-in-aging-rats-following-developmental-bpa-exposure-a-dose-response-analysis
#6
Gail S Prins, Shu-Hua Ye, Lynn Birch, Xiang Zhang, Ana Cheong, Han Lin, Esther Calderon-Gierszal, Jacob Groen, Wen-Yang Hu, Shuk-Mei Ho, Richard B van Breemen
BACKGROUND: Previous studies have uncovered heightened prostatic susceptibility to hormone-induced neoplasia from early-life exposure to low-dose bisphenol A (BPA). However, significant data gaps remain that are essential to address for biological relevance and necessary risk assessment. OBJECTIVES: A complete BPA dose-response analysis of prostate lesions across multiple prostatic lobes was conducted that included internal BPA dosimetry, progression to adenocarcinoma with aging and mechanistic connections to epigenetically reprogramed genes...
July 11, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28692411/evaluation-of-the-health-benefits-of-a-multivitamin-multimineral-herbal-essential-oil-infused-supplement-a-pilot-trial
#7
Xuesheng Han, Dennis L Eggett, Tory L Parker
This study was designed to quantitatively evaluate the health benefits of a multivitamin, multimineral, herbal, essential oil-infused supplement using serum biomarkers. We also qualitatively evaluated the health effects of this supplement using a survey. Sixteen participants were recruited to take the supplement as directed for two months. The levels of the following serum components were measured in the participants: total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, triglycerides, lipoprotein(a), LDL/HDL cholesterol ratio, total/HDL cholesterol ratio, ferritin, fibrinogen, C-reactive protein, insulin, testosterone, sex hormone binding globulin, free androgen index, red blood cell magnesium, homocysteine, coenzyme Q10, lipid peroxides, alpha-tocopherol, gamma-tocopherol, cardiovascular index, eicosapentaenoic acid (EPA), arachidonic acid (AA), and the AA/EPA ratio...
July 10, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28679314/pre-treatment-of-different-biological-matrices-for-exogenous-testosterone-analysis-a-review
#8
Edna Carolina Pizzato, Marcelo Filonzi, Hemerson Silva da Rosa, André Valle de Bairros
Exogenous testosterone presence has been monitored mainly in urine and blood, however other biological matrices such as hair, nails and saliva samples can be used with successful for in vivo measurement. Chromatographic analysis requires pre-treatment to obtain free testosterone and its metabolites. Among the pre-treatment procedures, digestion, hydrolysis and solvolysis steps are used to reach the analytical purpose. Digestion assay is indicated for hair and nails samples. First, it is recommended decontamination step...
July 5, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28673896/serum-androgen-levels-and-their-relation-to-performance-in-track-and-field-mass-spectrometry-results-from-2127-observations-in-male-and-female-elite-athletes
#9
Stéphane Bermon, Pierre-Yves Garnier
OBJECTIVE: To describe and characterise serum androgen levels and to study their possible influence on athletic performance in male and female elite athletes. METHODS: 2127 observations of competition best performances and mass spectrometry-measured serum androgen concentrations, obtained during the 2011 and 2013 International Association of Athletics Federations World Championships, were analysed in male and female elite track and field athletes. To test the influence of serum androgen levels on performance, male and female athletes were classified in tertiles according to their free testosterone (fT) concentration and the best competition results achieved in the highest and lowest fT tertiles were then compared...
July 3, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28657375/metabolic-effect-of-obesity-on-polycystic-ovary-syndrome-in-adolescents-a-meta-analysis
#10
Li Li, Qiong Feng, Ming Ye, Yaojuan He, Aling Yao, Kun Shi
This meta-analysis provides an updated and comprehensive estimate of the effects of obesity on metabolic disorders in adolescent polycystic ovary syndrome (PCOS). Relevant articles consistent with the search terms published up to 31 January 2014 were retrieved from PubMed, EMBASE, PsycINFO and CENTRAL. Thirteen articles (16 independent studies) conformed to the inclusion criteria. The evaluated outcomes were the metabolic parameters of obese adolescents with PCOS (case group) relative to normal-weight adolescents with PCOS, or obese adolescents without PCOS...
June 28, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28646594/prevalence-and-prognosis-of-low-volume-oligorecurrent-hormone-sensitive-prostate-cancer-amenable-to-lesion-ablative-therapy
#11
Aurélie De Bruycker, Bieke Lambert, Tom Claeys, Louke Delrue, Chamberlain Mbah, Gert De Meerleer, Geert Villeirs, Filip De Vos, Kathia De Man, Karel Decaestecker, Valérie Fonteyne, Nicolaas Lumen, Filip Ameye, Ignace Billiet, Steven Joniau, Friedl Vanhaverbeke, Wim Duthoy, Piet Ost
OBJECTIVES: To describe the anatomical patterns of PCa recurrence following primary therapy and investigate if patients with low-volume disease have a better prognosis as compared to their counterparts. MATERIAL AND METHODS: Patients eligible for a F18-choline PET-CT were entered in a prospective cohort study. Eligible patients had an asymptomatic biochemical recurrence following primary PCa treatment and testosterone levels >50 ng/ml. The number of lesions were counted per scan...
June 24, 2017: BJU International
https://www.readbyqxmd.com/read/28598709/an-association-between-bone-mineral-density-and-anabolic-hormones-in-middle-aged-and-elderly-men-with-prediabetes
#12
Michał Rabijewski, Lucyna Papierska, Paweł Piątkiewicz
INTRODUCTION: Prediabetes (PD) leads to reduced testosterone (T) in males, but the association between the anabolic hormones and bone mineral density (BMD) remains unknown. OBJECTIVES: We investigated an association between the anabolic hormones and BMD in middle-aged and elderly men with PD. METHODS: We investigated 84 prediabetic and 56 control men. Total T (TT), calculated free T (cFT), and dehydroepiandrosterone sulfate (DHEAS) were measured, and BMD was assessed using DXA methods...
September 2017: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/28581026/cross-sectional-association-between-testosterone-sex-hormone-binding-globulin-and-metabolic-syndrome-the-healthy-twin-study
#13
Heesun Moon, Inyoung Choi, Somi Kim, Hyeonyoung Ko, Jinyoung Shin, Kayoung Lee, Joohon Sung, Yun-Mi Song
OBJECTIVES: This study evaluated an association between testosterone, sex hormone-binding globulin (SHBG) and metabolic syndrome (MetS).We also evaluated the genetic and environmental influence on the association. DESIGN: Cross-sectional. SETTING: Community-based study. PARTICIPANTS: A total of 1,098 Korean adult men including 139 monozygotic twin pairs. MAIN OUTCOME MEASURE: MetS was defined using the National Cholesterol Education Program-Third Adult Treatment Panel (NCEP-ATP III) and International Diabetes Federation (IDF) criteria...
June 5, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28558523/melatonin-treatment-may-be-able-to-restore-menstrual-cyclicity-in-women-with-pcos-a-pilot-study
#14
Valeria Tagliaferri, Daniela Romualdi, Elisa Scarinci, Simona De Cicco, Christian Di Florio, Valentina Immediata, Anna Tropea, Carla Mariaflavia Santarsiero, Antonio Lanzone, Rosanna Apa
The objective of the study was to investigate the effects of 6 months of melatonin administration on clinical, endocrine, and metabolic features of women affected by polycystic ovary syndrome (PCOS). This is a prospective cohort study including 40 normal-weight women with PCOS between January and September 2016, enrolled in an academic research environment. Ultrasonographic pelvic examinations, hirsutism score evaluation, hormonal profile assays, oral glucose tolerance test, and lipid profile at baseline and after 6 months of melatonin administration were performed...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28498873/associations-of-androgens-with-depressive-symptoms-and-cognitive-status-in-the-general-population
#15
Hanna Kische, Stefan Gross, Henri Wallaschofski, Hans Jörgen Grabe, Henry Völzke, Matthias Nauck, Robin Haring
OBJECTIVES: Associations between androgens and depressive symptoms were mostly reported from cross-sectional and patient-based studies. STUDY DESIGN/MAIN OUTCOME MEASURES: Longitudinal data from 4,110 participants of the Study of Health in Pomerania were used to assess sex-specific associations of baseline total and free testosterone, androstenedione and sex hormone-binding globulin with incident depressive symptoms and cognitive status at 5- and 10-year follow-up...
2017: PloS One
https://www.readbyqxmd.com/read/28485925/occurrence-and-ecotoxicological-effects-of-free-conjugated-and-halogenated-steroids-including-17%C3%AE-hydroxypregnanolone-and-pregnanediol-in-swiss-wastewater-and-surface-water
#16
Kun Zhang, Yanbin Zhao, Karl Fent
Apart from estrogens, the occurrence and ecotoxicity of steroids in aquatic environments is poorly known. Here, we analyzed 33 steroids, including estrogens, androgens, progestins, and glucocorticoids, in hospital wastewaters, river water, and municipal wastewater treatment plant (WTP) influents and effluents at different sites in Switzerland. In addition, wastewater from different treatment steps of two WTPs with advanced treatment, such as ozonation or pulverized activated carbon, were analyzed to study the steroid's behavior during treatment...
June 6, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28466507/effects-of-dietary-approach-to-stop-hypertension-diet-on-androgens-antioxidant-status-and-body-composition-in-overweight-and-obese-women-with-polycystic-ovary-syndrome-a-randomised-controlled-trial
#17
M Azadi-Yazdi, M Karimi-Zarchi, A Salehi-Abargouei, H Fallahzadeh, A Nadjarzadeh
BACKGROUND: Polycystic ovary syndrome (PCOS) is the most common endocrine disease in reproductive age women. The present study aimed to determine the effects of Dietary Approaches to Stop Hypertension (DASH) diet on reproductive hormones, plasma total antioxidant status and anthropometric indices in overweight and obese PCOS women. METHODS: In this randomised controlled clinical trial, 60 women with PCOS were randomly assigned to one of two diets with energy restriction: the DASH diet and a control diet...
June 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28367841/a-higher-score-on-the-aging-males-symptoms-scale-is-associated-with-insulin-resistance-in-middle-aged-men
#18
Nobuya Hamanoue, Makito Tanabe, Tomoko Tanaka, Yuko Akehi, Junji Murakami, Takashi Nomiyama, Toshihiko Yanase
An age-associated androgen decrease and its pathological conditions are defined as late-onset hypogonadism (LOH). Among the various symptoms associated with LOH, a visceral fat increase is strongly associated with relatively low levels of testosterone. However, few studies have investigated the relationship between the Aging Males' Symptoms (AMS) scores and metabolic abnormalities. Thus, we aimed to clarify this relationship by investigating the relationship between AMS scores and various markers in blood. During routine health examinations in 241 middle-aged males (52...
May 30, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28352619/low-levels-of-serum-testosterone-in-middle-aged-men-impact-pathological-features-of-prostate-cancer
#19
Elton Llukani, Benjamin F Katz, Ilir Agalliu, Andrew Lightfoot, Sue-Jean S Yu, Martin Kathrins, Ziho Lee, Yu-Kai Su, Kelly Monahan Agnew, Alice McGill, Daniel D Eun, David I Lee
BACKGROUND: Serum testosterone deficiency increases with aging. Age is also a major risk factor for prostate cancer (PrCa) and PCa tumors are more frequently diagnosed among men >65 years old. We evaluated the relationship between preoperative serum testosterone and clinical/ pathological features of PrCa in middle-aged and elderly patients. METHODS: A total of 605 PrCa patients who underwent robotic-assisted radical prostatectomy between September 2010 and January 2013 at the University of Pennsylvania, and who had serum testosterone levels measured using Elecsys Testosterone II Immunoassay were included in this IRB-approved protocol...
March 2017: Prostate International
https://www.readbyqxmd.com/read/28344753/statin-testosterone-and-phosphodiesterase-5-inhibitor-treatments-and-age-related-mortality-in-diabetes
#20
Geoffrey Hackett, Peter W Jones, Richard C Strange, Sudarshan Ramachandran
AIM: To determine how statins, testosterone (T) replacement therapy (TRT) and phosphodiesterase 5-inhibitors (PDE5I) influence age related mortality in diabetic men. METHODS: We studied 857 diabetic men screened for the BLAST study, stratifying them (mean follow-up = 3.8 years) into: (1) Normal T levels/untreated (total T > 12 nmol/L and free T > 0.25 nmol/L), Low T/untreated and Low T/treated; (2) PDE5I/untreated and PDE5I/treated; and (3) statin/untreated and statin/treated groups...
March 15, 2017: World Journal of Diabetes
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