keyword
MENU ▼
Read by QxMD icon Read
search

Testosterone

keyword
https://www.readbyqxmd.com/read/29689767/effects-of-standardized-quassinoid-rich-eurycoma-longifolia-extract-in-a-rat-model-of-osteoporosis-due-to-testosterone-deficiency-a-densitometric-morphometric-and-biomechanical-study
#1
Putri Ayu Jayusman, Isa Naina Mohamed, Ekram Alias, Sulaiman Md Dom, Ahmad Nazrun Shuid
BACKGROUND: Eurycoma longifolia (EL) is a well-known aphrodisiac herb for men. Recently, the crude extract of EL was reported to possess anti-osteoporotic activities. OBJECTIVE: This study aims to determine the bone protective effects of the standardized quassinoid-rich EL extract in testosterone-deficient rat model. METHODS: Ninety-six intact male Sprague-Dawley rats were randomized into baseline, sham, orchidectomized, and chemically castrated groups...
April 18, 2018: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/29689378/in-utero-and-lactational-exposure-of-dehp-increases-the-susceptibility-of-prostate-carcinogenesis-in-male-offspring-through-psca-hypomethylation
#2
Bin Xia, Yong Wang, Xiu Wang, Jianhui Wu, Qi Song, Zuyue Sun, Yunhui Zhang
As an ubiquitous environmental endocrine disruptor, di(2-ethylhexyl) phthalate (DEHP) has been shown to interfere with the development of reproductive organs and induce pathological changes in prostate. Our previous finding showed that in utero and lactational (IUL) DEHP exposure could disrupt the balance of testosterone and estrogen and increase the susceptibility of prostate carcinogenesis. The purpose of this study is to investigate whether the early-life specific epigenetic modifications could mediate the effect of DEHP exposure on prostate carcinogenesis in rodents, for epigenetic modifications play important roles in regulating prostate carcinogenesis...
April 21, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29689300/2d-4d-and-spatial-abilities-from-rats-to-humans
#3
N Müller, S Campbell, M Nonaka, T M Rost, G Pipa, B N Konrad, A Steiger, M Czisch, G Fernández, M Dresler, L Genzel
Variance in spatial abilities are thought to be determined by in utero levels of testosterone and oestrogen, measurable in adults by the length ratio of the 2nd and 4th digit (2D:4D). We confirmed the relationship between 2D:4D and spatial performance using rats in two different tasks (paired-associate task and watermaze) and replicated this in humans. We further clarified anatomical and functional brain correlates of the association between 2D:4D and spatial performance in humans.
April 21, 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29688872/neural-correlates-of-emotional-action-control-in-anger-prone-women-with-borderline-personality-disorder
#4
Katja Bertsch, Karin Roelofs, Paul Jonathan Roch, Bo Ma, Saskia Hensel, Sabine C Herpertz, Inge Volman
BACKGROUND: Difficulty in controlling emotional impulses is a crucial component of borderline personality disorder (BPD) that often leads to destructive, impulsive behaviours against others. In line with recent findings in aggressive individuals, deficits in prefrontal amygdala coupling during emotional action control may account for these symptoms. METHODS: To study the neurobiological correlates of altered emotional action control in individuals with BPD, we asked medication-free, anger-prone, female patients with BPD and age- and intelligence-matched healthy women to take part in an approach-avoidance task while lying in an MRI scanner...
May 2018: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29688866/does-the-use-of-hernia-mesh-in-surgical-inguinal-hernia-repairs-cause-male-infertility-a-systematic-review-and-descriptive-analysis
#5
REVIEW
Zhiyong Dong, Stacy Ann Kujawa, Cunchuan Wang, Hong Zhao
OBJECTIVE: The aim of this study was to systematically review the available clinical trials examining male infertility after inguinal hernias were repaired using mesh procedures. METHODS: The Cochrane Library, PubMed, Embase, Web of Science, and Chinese Biomedical Medicine Database were investigated. The Jada score was used to evaluate the quality of the studies, "Oxford Centre for Evidence-based Medicine-Levels of Evidence" was used to assess the level of the trials, and descriptive analysis was used to evaluate the studies...
April 23, 2018: Reproductive Health
https://www.readbyqxmd.com/read/29688563/prenatal-exposure-to-dehp-induces-neuronal-degeneration-and-neurobehavioral-abnormalities-in-adult-male-mice
#6
Radwa Barakat, Po-Ching Lin, Chan Jin Park, Catherine Best-Popescu, Hatem H Bakery, Mohamed E Abosalum, Nabila M Abdelaleem, Jodi A Flaws, CheMyong Ko
Phthalates are a family of synthetic chemicals that are used in producing a variety of consumer products. Di-(2-ethylhexyl) phthalate (DEHP) is an widely used phthalate and poses a public health concern. Prenatal exposure to DEHP has been shown to induce premature reproductive senescence in animal studies. In this study, we tested the hypothesis that prenatal exposure to DEHP impairs neurobehavior and recognition memory in her male offspring and we investigated one possible mechanism-oxidative damage in the hippocampus...
April 23, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29688494/discordance-between-serum-anti-m%C3%A3-llerian-hormone-concentrations-and-antral-follicle-counts-not-only-technical-issues
#7
M Š Alebic, N Stojanovic, D Dewailly
STUDY QUESTION: Do patient-specific features contribute to the differences between measured serum anti-Müllerian hormone (AMH) concentrations and AMH values expected from the corresponding antral follicle count (AFC)? SUMMARY ANSWER: Patient-specific features contribute to the differences between measured AMH values and AMH values expected from the corresponding AFC (AMHp), potentially through their effect on follicular AMH production. WHAT IS KNOWN ALREADY: Both patient counselling and patient management could be hampered by finding of disagreement between AFC and AMH if both are used for the prediction of ovarian response...
April 24, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29687786/a-novel-mutation-of-amhr2-in-two-siblings-with-persistent-m%C3%A3-llerian-duct-syndrome
#8
Edip Unal, Yusuf Kenan Haspolat, Ruken Yıldırım, Suat Tekin, Vasfiye Demir, Hüseyin Onay
Persistent Müllerian Duct syndrome (PMDS) develops due to deficiency of anti-Müllerian hormone (AMH) or insensitivity of target organs to AMH in people with 46, XY karyotype. PMDS is characterized with normal male phenotype of external genital associated with persistence of Müllerian structures. The 2.5 years old male patient presented due to bilateral undescended testis. Karyotype was 46, XY. The amount of increase in testosterone following human chorionic gonadotropin (hCG) stimulation test was normal...
April 24, 2018: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/29687691/side-effects-of-anabolic-steroids-used-by-athletes-at-unaizah-gyms-saudi-arabia-a-pilot-study
#9
Amer A Almaiman, Sulaiman H Almaiman, Elsayed I Elagamy, Osama Al Wutayd, Mohammed Almarzuqi, Rayyan Alzunaidi, Sami Alhatlani, Eltayeb E Eid
BACKGROUND: A large number of Saudi athletes are recently shown to use androgenic anabolic steroid (AAS) products to achieve rapid muscle growth without realizing the serious health risks of these drugs. Aim of this study was to elucidate the side effects encountered with prolonged use of AAS products by Saudi athletes. METHODS: A cross-sectional study was conducted, in which 16 regular gym members, 12 of them used AAS, were asked to answer a questionnaire and provide blood samples following current AAS course completion...
April 20, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29687503/are-hormone-measurements-and-ultrasounds-really-predictors-of-sperm-retrieval-in-testicular-sperm-extraction-a-case-report-and-literature-review
#10
G Cito, M E Coccia, R Picone, A Cocci, L Criscuoli, S Dabizzi, G Nesi, S Serni, M Carini, A Natali
Azoospermia can be diagnosed in about 10%-15% of the infertile male population. To overcome the problem of failure to produce spermatozoa in the ejaculate in patients with nonobstructive azoospermia (NOA), testicular sperm extraction (TESE) may be performed to find the focal area of spermatogenesis. A 47-year-old man with NOA presented for treatment of secondary couple infertility. The patient underwent a first TESE 7 years earlier with cryopreservation, and an intracytoplasmic sperm injection-embryo transfer ended in a term pregnancy...
April 23, 2018: Andrologia
https://www.readbyqxmd.com/read/29687464/protective-effects-of-sea-cucumber-holothuria-atra-extract-on-testicular-dysfunction-induced-by-immune-suppressant-drugs-in-wistar-rats
#11
D Y Saad, M M Soliman, A A Mohamed, G B Youssef
The current study was aimed to evaluate the protective effect of Holothurian atra (HA) extract; naturally occurring marine resource, against methotrexate (MTX) induced testicular dysfunction. Mature rats received either MTX (20 mg/kg, intraperitoneally) or saline on the 7th day of experiment al design. Seven days prior and after MTX-injection, rats received HA at dose of 300 mg/kg intragastrically (HA + MTX group; HA group alone). Serum was extracted and testicular tissues were examined for the changes in serum biochemistry (liver & kidney biomarkers, testicular hormones and antioxidants), molecular and histopthological alterations using RT-PCR and immunohistochemistry...
April 23, 2018: Andrologia
https://www.readbyqxmd.com/read/29686703/vesicle-associated-membrane-protein-associated-protein-a-is-involved-in-androgen-receptor-trafficking-in-mouse-sertoli-cells
#12
Qiong Deng, Jianwen Zhang, Zhu Wang, Shengping Zhang, Fan Zhi, Hui Liang
Androgen and its receptor (AR) play an important role in maintaining spermatogenesis and male fertility. The nonclassical androgen signaling pathway is proposed to be mediated by an AR in plasma membrane in Sertoli cells. Our previous studies showed that testosterone induces cytoplasmic AR translocation to plasma membrane by binding with caveolin-1. This study was conducted to the underlying molecular mechanism mediating AR trafficking. Data from mass spectrometry using membrane coimmunoprecipitation sample by anti-AR antibody indicated VAPA is a candidate protein...
2018: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29684825/exposure-to-polybrominated-diphenyl-ethers-and-phthalates-in-healthy-men-living-in-the-greater-montreal-area-a-study-of-hormonal-balance-and-semen-quality
#13
Océane Albert, Jonathan Y Huang, Katarina Aleksa, Barbara F Hales, Cynthia G Goodyer, Bernard Robaire, Jonathan Chevrier, Peter Chan
Studies investigating the associations between exposure of young men to polybrominated diphenyl ethers (PBDEs) or phthalates and hormone levels or semen quality have produced inconsistent results. Our goal was to investigate the association of exposure to PBDEs or phthalate metabolites with changes in markers of thyroid (TSH, free T3 and free T4) and reproductive function (sperm concentrations, motility, and quality; serum LH and testosterone) in 153 healthy young men from the greater Montreal area. Using covariate-adjusted models, we found that each 10-fold increase in BDE-47 was associated with lower TSH levels (-17...
April 20, 2018: Environment International
https://www.readbyqxmd.com/read/29684698/biophysical-characterization-of-aptenodytes-forsteri-cytochrome-p450-aromatase
#14
Francisco Zarate-Perez, Jesús B Velázquez-Fernández, Gareth K Jennings, Lisa S Shock, Charles E Lyons, John C Hackett
Cytochrome P450 19 (CYP19, aromatase) catalyzes the conversion of androgens to estrogens in a sequence of three reactions that each depend on NADPH and O2 . Aromatase is a phylogenetically-ancient enzyme and its breadth of expression in other species has highlighted distinct physiological functions. In songbirds, estrogen production is required for programming the neural circuits controlling song and in the determination of sex in fish and reptiles. This work describes the expression, purification, and biophysical characterization of Aptenodytes forsteri (Emperor penguin, af) aromatase...
April 7, 2018: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29683499/the-role-of-androgens-on-periodontal-repair-in-female-rats
#15
João Paulo Steffens, Luis Carlos Leal Santana, Jonleno Coutinho Paiva Pitombo, Daniel Olivio Ribeiro, Maria Carolina Costa Albaricci, Stephanie von Stein Cubas Warnavin, Alpdogan Kantarci, Luis Carlos Spolidorio
BACKGROUND: Testosterone replacement enhances cognitive function and musculoskeletal health in postmenopausal women. However, the biological role of testosterone on inflammation and bone metabolism in females is not well understood. Our objective was to measure the impact of androgens and their receptors on periodontal tissues during periodontal repair in female rats. METHODS: Seventy female Holtzman rats were divided into seven groups (n = 10/group): negative control; repair control; androgen receptor antagonist (flutamide, 50 mg/kg, every other day); estrogen receptor antagonist (fulvestrant, 1...
April 2018: Journal of Periodontology
https://www.readbyqxmd.com/read/29683497/long-term-testosterone-depletion-attenuates-inflammatory-bone-resorption-in-the-ligature-induced-periodontal-disease-model
#16
Vinícius de Paiva Gonçalves, Adriana Alicia C Ortega, João Paulo Steffens, Denise Madalena Palomari Spolidorio, Carlos Rossa, Luis C Spolidorio
BACKGROUND: Testosterone is known to affect bone in physiological and pathological conditions. The purpose of this study is to evaluate the role of testosterone in experimental periodontal disease in rats. METHODS: In this study we used a ligature model of periodontal disease in rats submitted to orchiectomy (OCX, testosterone depletion) with and without testosterone replacement therapy (TR). Control animals were sham-operated and retained physiological testosterone levels...
April 2018: Journal of Periodontology
https://www.readbyqxmd.com/read/29683475/pharmacological-interventions-for-the-prevention-of-insufficiency-fractures-and-avascular-necrosis-associated-with-pelvic-radiotherapy-in-adults
#17
REVIEW
Qurrat U van den Blink, Kate Garcez, Caroline C Henson, Susan E Davidson, Claire E Higham
BACKGROUND: Pelvic radiotherapy is a treatment delivered to an estimated 150,000 to 300,000 people annually across high-income countries. Fractures due to normal stresses on weakened bone due to radiotherapy are termed insufficiency fractures. Pelvic radiotherapy-related interruption of the blood supply to the hip is termed avascular necrosis and is another recognised complication. The reported incidences of insufficiency fractures are 2.7% to 89% and risk of developing avascular necrosis is 0...
April 23, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29683379/the-prevalence-and-severity-of-varicocele-in-adult-population-over-the-age-of-forty-years-old-a-cross-sectional-study
#18
Huseyin Besiroglu, Alper Otunctemur, Murat Dursun, Emin Ozbek
OBJECTIVES: To investigate the prevalence and severity of varicocele in adult population over the age of 40. We also measured testicular size, consistency, and total testosterone levels with an aim to observe the effect of varicocele on testis as men age. METHODS: Two hundred twenty-four patients with varicocele, 241 patients without varicocele who admitted to our clinic were enrolled in the study. We stratified participants by four age groups (40-49, 50-59, 60-69, >70 yr)...
April 23, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/29683243/protective-effects-of-camel-whey-protein-against-scrotal-heat-mediated-damage-and-infertility-in-the-mouse-testis-through-yap-nrf2-and-ppar-gamma-signaling-pathways
#19
Gamal Badr, Hanem S Abdel-Tawab, Nancy K Ramadan, Samia F Ahmed, Mohamed H Mahmoud
Elevation of scrotal temperature is one of the most important causes of impaired spermatogenesis and male infertility, but the exact mechanism remains controversial. The present study investigated the impact of camel whey protein (CWP) on the mechanisms of heat stress (HS)-mediated testicular damage in male mice. Exposure to HS was associated with significant increase in the testicular tissues' oxidative stress. Mechanistically, exposure to HS resulted in upregulation of P53 and Nrf2 expressions; downregulation of Bcl2 and PPAR-γ expressions; and induction of testicular Leydig cell hyperplasia...
April 23, 2018: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29683196/hypogonadism-and-male-obesity-focus-on-unresolved-questions
#20
Mathis Grossmann
Obesity, increasing in prevalence globally, is the clinical condition most strongly associated with lowered testosterone concentrations in men, and presents as one of the strongest predictors of receiving testosterone treatment. While low circulating total testosterone concentrations in modest obesity primarily reflect reduced concentrations of sex hormone binding globulin, more marked obesity can lead to genuine hypothalamic-pituitary-testicular axis (HPT) suppression. HPT axis suppression is likely mediated via pro-inflammatory cytokine and dysregulated leptin signalling and aggravated by associated comorbidities...
April 23, 2018: Clinical Endocrinology
keyword
keyword
4121
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"