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male primary hypogonadism

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https://www.readbyqxmd.com/read/27864361/causes-of-male-infertility-a-9-year-prospective-monocentre-study-on-1737-patients-with-reduced-total-sperm-counts
#1
M Punab, O Poolamets, P Paju, V Vihljajev, K Pomm, R Ladva, P Korrovits, M Laan
STUDY QUESTION: What are the primary causes of severe male factor infertility? SUMMARY ANSWER: Although 40% of all patients showed primary causes of infertility, which could be subdivided into three groups based on the severity of their effect, ~75% of oligozoospermia cases remained idiopathic. WHAT IS KNOWN ALREADY: There are few large-scale epidemiological studies analyzing the causes of male factor infertility. STUDY DESIGN, SIZE, DURATION: A prospective clinical-epidemiological study was conducted at the Andrology Centre, Tartu University Hospital between 2005 and 2013, recruiting male partners of couples failing to conceive a child for over ≥12 months...
November 17, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27849668/risk-of-acute-testicular-failure-after-preoperative-radiotherapy-for-rectal-cancer-a-prospective-cohort-study
#2
Christian Buchli, Anna Martling, Massoud Al Abani, Jan-Erik Frödin, Matteo Bottai, Ingmar Lax, Stefan Arver, Torbjörn Holm
OBJECTIVE: The aim of this study was to assess the acute effect of preoperative RT for rectal cancer on endocrine testicular function. BACKGROUND: Preoperative radiotherapy (RT) enhances local control and cancer-specific survival in patients treated for rectal cancer. In case series, a negative acute effect on Leydig cell function has been reported. METHODS: This prospective cohort study included 168 males with rectal or prostate cancer stage I-III...
November 15, 2016: Annals of Surgery
https://www.readbyqxmd.com/read/27822338/stem-cell-therapy-for-the-treatment-of-leydig-cell-dysfunction-in-primary-hypogonadism
#3
REVIEW
Taylor C Peak, Nora M Haney, William Wang, Kenneth J DeLay, Wayne J Hellstrom
The production of testosterone occurs within the Leydig cells of the testes. When production fails at this level from either congenital, acquired, or systemic disorders, the result is primary hypogonadism. While numerous testosterone formulations have been developed, none are yet fully capable of replicating the physiological patterns of testosterone secretion. Multiple stem cell therapies to restore androgenic function of the testes are under investigation. Leydig cells derived from bone marrow, adipose tissue, umbilical cord, and the testes have shown promise for future therapy for primary hypogonadism...
October 26, 2016: World Journal of Stem Cells
https://www.readbyqxmd.com/read/27799946/anti-m%C3%A3-llerian-hormone-as-a-marker-of-steroid-and-gonadotropin-action-in-the-testis-of-children-and-adolescents-with-disorders-of-the-gonadal-axis
#4
REVIEW
Nadia Y Edelsztein, Romina P Grinspon, Helena F Schteingart, Rodolfo A Rey
In pediatric patients, basal testosterone and gonadotropin levels may be uninformative in the assessment of testicular function. Measurement of serum anti-Müllerian hormone (AMH) has become increasingly widespread since it provides information about the activity of the male gonad without the need for dynamic tests, and also reflects the action of FSH and androgens within the testis. AMH is secreted in high amounts by Sertoli cells from fetal life until the onset of puberty. Basal AMH expression is not dependent on gonadotropins or sex steroids; however, FSH further increases and testosterone inhibits AMH production...
2016: International Journal of Pediatric Endocrinology
https://www.readbyqxmd.com/read/27768007/the-effectiveness-of-zinc-supplementation-in-men-with-isolated-hypogonadotropic-hypogonadism
#5
Yan-Ling Liu, Man-Na Zhang, Guo-Yu Tong, Shou-Yue Sun, Yan-Hua Zhu, Ying Cao, Jie Zhang, Hong Huang, Ben Niu, Hong Li, Qing-Hua Guo, Yan Gao, Da-Long Zhu, Xiao-Ying Li
A multicenter, open-label, randomized, controlled superiority trial with 18 months of follow-up was conducted to investigate whether oral zinc supplementation could further promote spermatogenesis in males with isolated hypogonadotropic hypogonadism (IHH) receiving sequential purified urinary follicular-stimulating hormone/human chorionic gonadotropin (uFSH/hCG) replacement. Sixty-seven Chinese male IHH patients were recruited from the Departments of Endocrinology in eight tertiary hospitals and randomly allocated into the sequential uFSH/hCG group (Group A, n = 34) or the sequential uFSH plus zinc supplementation group (Group B, n = 33)...
October 21, 2016: Asian Journal of Andrology
https://www.readbyqxmd.com/read/27651963/an-atypical-presentation-of-a-male-with-oral-facial-digital-syndrome-type-1-related-ciliopathy
#6
Sheena Sharma, Jennifer M Kalish, Ethan M Goldberg, Francis Jeshira Reynoso, Madhura Pradhan
Background. Oral-facial-digital syndrome type 1 (OFD1) is a rare condition with X-linked dominant inheritance caused by mutations in the Cxorf5 (OFD1) gene. This gene encodes the OFD1 protein located within centrosomes and basal bodies of primary cilia. Approximately 15-50% of patients with OFD1 progress to end-stage kidney disease following development of polycystic changes within the kidneys. This condition almost always causes intrauterine lethality in males. Description of Case Diagnosis and Treatment. A Caucasian male aged 9 years and 9 months presented with increased urinary frequency, increased thirst, and decreased appetite...
2016: Case Reports in Nephrology
https://www.readbyqxmd.com/read/27616469/kisspeptin-levels-in-idiopathic-hypogonadotropic-hypogonadism-diagnosed-male-patients-and-its-relation-with-glucose-insulin-dynamic
#7
Hasan Öztin, Eylem Çağıltay, Sinan Çağlayan, Mustafa Kaplan, Yaşam Kemal Akpak, Nilay Karaca, Mesut Tığlıoğlu
Male hypogonadism is defined as the deficiency of testosterone or sperm production synthesized by testicles or the deficiency of both. The reasons for hypogonadism may be primary, meaning testicular or secondary, meaning hypothalamohypophyseal. In hypogonadotropic hypogonadism (HH), there is indeficiency in gonadotropic hormones due to hypothalamic or hypophyseal reasons. Gonadotropin-releasing hormone (GnRH) is an important stimulant in releasing follicular stimulant hormone (FSH), mainly luteinizing hormone (LH)...
September 10, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27544297/diabetes-and-sexuality
#8
Fuat Kizilay, Helena Elizabeth Gali, Ege Can Serefoglu
INTRODUCTION: Deterioration in sexual functioning is one of the major and serious complications of diabetes. This common metabolic disorder not only affects sexuality through microvascular and nerve damage but also has psychological aspects. In men, the primary complications are erectile dysfunction, ejaculatory dysfunction, and loss of libido. Women similarly experience sexual problems, including decreased libido and painful intercourse. AIM: To summarize the effects of diabetes on sexuality, evaluate the impact of diabetes on sexual function, and assess the conventional and novel treatment approaches based on recent studies...
August 17, 2016: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/27453663/operative-considerations-for-late-presenting-persistent-m%C3%A3-llerian-duct-syndrome
#9
Jacob T Ark, Kelvin A Moses
Persistent Müllerian duct syndrome (PMDS) is a condition in which a 46, XY male displays masculine external genitalia, but internally retains developed Müllerian duct structures (uterus, fallopian tubes, and upper two-thirds vagina). Thoughtful operative consideration is needed to maximize the therapeutic benefit while minimizing the risk of hypogonadism, infertility, and erectile dysfunction. We report a 53-year-old male with a pelvic mass incidentally discovered on routine ultrasound, intra-operatively discovered to be PMDS...
July 2016: Urology Annals
https://www.readbyqxmd.com/read/27434384/evaluation-and-treatment-of-male-hypogonadism-in-primary-care
#10
Kim Anne Pickett
Male hypogonadism is increasing in prevalence, particularly in the older male population. Signs and symptoms associated with hypogonadism are often nonspecific and may be difficult to categorize. This article discusses parameters for screening patients at risk, reviews how to establish the diagnosis of primary or secondary male hypogonadism, and offers important considerations for treatment of patients with hypogonadism.
August 18, 2016: Nurse Practitioner
https://www.readbyqxmd.com/read/27431683/identification-of-nr0b1-as-a-novel-androgen-receptor-co-repressor-in-mouse-sertoli-cells
#11
Yu-Chi Li, Man-Ling Luo, Huan Guo, Tian-Tian Wang, Shou-Ren Lin, Jian-Bo Chen, Qian Ma, Yan-Li Gu, Zhi-Mao Jiang, Yao-Ting Gui
Nuclear receptor subfamily 0 group B member 1 (Nr0b1) is an atypical member of the nuclear receptor family that is predominantly expressed in mouse Sertoli cells (SCs). Mutations of NR0B1 in humans cause adrenal failure and hypogonadotropic hypogonadism. The targeted mutagenesis of Nr0b1 in mice has revealed a primary gonadal defect characterized by the overexpression of aromatase and cellular obstruction of the seminiferous tubules and efferent ductules, leading to germ cell death and infertility. The transgenic expression of Nr0b1 under the control of the Müllerian-inhibiting substance promoter (MIS-Nr0b1), which is selectively expressed in SCs, improves fertility...
September 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27374987/natural-history-risk-factors-and-clinical-features-of-primary-hypogonadism-in-ageing-men-longitudinal-data-from-the-european-male-ageing-study
#12
Tomás Ahern, Agnieszka Swiecicka, Robert J A H Eendebak, Emma L Carter, Joseph D Finn, Stephen R Pye, Terence W O'Neill, Leen Antonio, Brian Keevil, György Bartfai, Felipe F Casanueva, Gianni Forti, Aleksander Giwercman, Thang S Han, Krzysztof Kula, Michael E J Lean, Neil Pendleton, Margus Punab, Giulia Rastrelli, Martin K Rutter, Dirk Vanderschueren, Ilpo T Huhtaniemi, Frederick C W Wu
OBJECTIVE: In ageing men, the incidence and clinical significance of testosterone (T) decline accompanied by elevated luteinizing hormone (LH) are unclear. We describe the natural history, risk factors and clinical features associated with the development of biochemical primary hypogonadism (PHG, T < 10·5 nmol/l and LH>9·4U/l) in ageing men. DESIGN, PATIENTS AND MEASUREMENTS: A prospective observational cohort survey of 3,369 community-dwelling men aged 40-79 years, followed up for 4·3 years...
December 2016: Clinical Endocrinology
https://www.readbyqxmd.com/read/27368157/metabolic-syndrome-in-white-european-men-presenting-for-primary-couple-s-infertility-investigation-of-the-clinical-and-reproductive-burden
#13
E Ventimiglia, P Capogrosso, M Colicchia, L Boeri, A Serino, G Castagna, M C Clementi, G La Croce, C Regina, M Bianchi, V Mirone, R Damiano, F Montorsi, A Salonia
Despite complex interactions between obesity, dyslipidemia, hyperinsulinaemia, and the reproductive axis, the impact of metabolic syndrome on human male reproductive function has not been analysed comprehensively. Complete demographic, clinical, and laboratory data from 1337 consecutive primary infertile men were analysed. Health-significant comorbidities were scored with the Charlson Comorbidity Index (categorised 0 vs. 1 vs. 2 or higher). NCEP-ATPIII criteria were used to define metabolic syndrome. Semen analysis values were assessed based on the 2010 World Health Organisation (WHO) reference criteria...
September 2016: Andrology
https://www.readbyqxmd.com/read/27346312/-early-onset-and-late-onset-male-hypogonadotropic-hypogonadism-and-osteoporosis
#14
Hiroshi Okada, Takeshi Shin, Yoshitomo Kobori
Hypogonadism is classified into two major clinical entities, namely early-onset hypogonadism and late-onset hypogonadism. The former is characterized by the malfunction of hypothalamo-pituitary-gonadal(testicular)axis or by the primary hypofunction of testes(e.g. Klinefelter's syndrome). The latter is summarized as LOH syndrome which is attributed to the dropped level of bioavailable testosterone. In these diseases testosterone is the key molecule which may cause various symptoms relating not only to physical health but also to mental or psychologic health...
July 2016: Clinical Calcium
https://www.readbyqxmd.com/read/27321556/prospective-study-of-histological-and-endocrine-parameters-of-gonadal-function-in-boys-with-cryptorchidism
#15
Gilvydas Verkauskas, Dalius Malcius, Audrone Eidukaite, Juozas Vilimas, Darius Dasevicius, Vytautas Bilius, Faruk Hadziselimovic
INTRODUCTION: A transient increase in gonadotropins and testosterone during mini-puberty causes gonocytes to differentiate into Ad spermatogonia, which establish male germ cell memory and male-specific DNA methylation pathways. Over half of patients with unilateral cryptorchidism and the majority of patients with bilateral cryptorchidism display an abnormal spermiogram, which indicates that unilateral cryptorchidism is a bilateral disease; therefore, it represents a serious andrological problem...
August 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27241810/severity-and-pattern-of-bone-mineral-loss-in-endocrine-causes-of-osteoporosis-as-compared-to-age-related-bone-mineral-loss
#16
D Dutta, P Dharmshaktu, A Aggarwal, K Gaurav, R Bansal, N Devru, U C Garga, B Kulshreshtha
BACKGROUND: Data are scant on bone health in endocrinopathies from India. This study evaluated bone mineral density (BMD) loss in endocrinopathies [Graves' disease (GD), type 1 diabetes mellitus (T1DM), hypogonadotrophic hypogonadism (HypoH), hypergonadotropic hypogonadism (HyperH), hypopituitarism, primary hyperparathyroidism (PHPT)] as compared to age-related BMD loss [postmenopausal osteoporosis (PMO), andropause]. MATERIALS AND METHODS: Retrospective audit of records of patients >30 years age attending a bone clinic from August 2014 to January 2016 was done...
July 2016: Journal of Postgraduate Medicine
https://www.readbyqxmd.com/read/27215144/prevalence-of-sexual-dysfunction-and-associated-risk-factors-in-middle-aged-and-elderly-korean-men-in-primary-care
#17
Seo Young Kang, Jung Ah Lee, Sung Sunwoo, Byung-Yeon Yu, Jun Hyung Lee, Chung Hwan Cho, Byung-Wook Yoo, Tae Hee Jeon, Hoon Ki Park, Young Sik Kim
Although several studies have individually investigated the risk factors for erectile dysfunction (ED), premature ejaculation (PE), and late-onset hypogonadism (LOH), few studies have considered ED, PE, and LOH as categories of sexual dysfunction (SD) within the same population. We therefore aimed to investigate the prevalence of SD and its associated risk factors among men in primary care. Study participants were enrolled by 18 family physicians from 15 hospital-based family practices in Korea between August 2010 and May 2011...
May 23, 2016: Journal of Sex Research
https://www.readbyqxmd.com/read/27195510/structures-of-androgen-receptor-bound-with-ligands-advancing-understanding-of-biological-functions-and-drug-discovery
#18
Sugunadevi Sakkiah, Hui Wen Ng, Weida Tong, Huixiao Hong
INTRODUCTION: Androgen receptor (AR) is a ligand-dependent transcription factor and a member of the nuclear receptor superfamily. It plays a vital role in male sexual development and regulates gene expression in various tissues, including prostate. Androgens are compounds that exert their biological effects via interaction with AR. Binding of androgens to AR initiates conformational changes in AR that affect binding of co-regulator proteins and DNA. AR agonists and antagonists are widely used in a variety of clinical applications (i...
October 2016: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/27117364/-dysfunction-of-hypothalamic-pituitary-testicular-axis-in-patients-with-adrenal-hypoplasia-congenita-due-to-dax-1-gene-mutation
#19
J J Zheng, X Y Wu, M Nie, Z X Liu, X Wang, B K Huang, Y Fu, L Lu, L Duan, J F Mao
OBJECTIVE: To evaluate the hypothalamic-pituitary-testicular axis (HPTA) function and spermatogenesis in male patients with X-linked adrenal hypoplasia congenita (AHC) due to DAX-1 gene mutation. METHODS: Twenty-four adult male patients from Peking Union Medical College Hospital between November 2007 and December 2014 were included.Their DAX-1 gene mutations were confirmed by polymerase chain reaction (PCR) and clinical features, hormone level and semen assay were collected...
April 19, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27079813/cell-interactions-and-genetic-regulation-that-contribute-to-testicular-leydig-cell-development-and-differentiation
#20
REVIEW
Luc J Martin
Leydig cells, located within the interstitial compartment of the testis, are major contributors of androgen synthesis and secretion, which play an important role in testis development, normal masculinization, maintenance of spermatogenesis, and general male fertility. Accordingly, dysfunction of Leydig cells may lead to various male reproductive maladies, including primary hypogonadism, cryptorchidism, and hypospadias. A better understanding of how cell interactions and gene regulation contribute to testicular Leydig cell development and differentiation may therefore help limit the incidence of such male reproductive pathologies...
June 2016: Molecular Reproduction and Development
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