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male infertility and metabolic syndrom

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https://www.readbyqxmd.com/read/28334509/disturbed-testicular-expression-of-the-estrogen-metabolizing-enzymes-cyp1a1-and-comt-in-infertile-men-with-primary-spermatogenic-failure-possible-negative-implications-on-sertoli-cells
#1
A Parada-Bustamante, C Molina, C Valencia, M Flórez, M C Lardone, F Argandoña, A Piottante, M Ebensperguer, P A Orihuela, A Castro
Estradiol (E2 ) is normally metabolized to hydroxyestradiols and methoxyestradiols by CYP1A1, CYP1B1 and COMT. However, an altered production of these metabolites by a disturbed expression of these enzymes is associated with reproductive and non-reproductive pathologies. In vitro studies suggest that increased hydroxyestradiols and methoxyestradiols intratesticular generation is related to male infertility, but no studies have explored whether infertile men have a disturbed testicular expression of the enzymes that generate these E2 metabolites...
May 2017: Andrology
https://www.readbyqxmd.com/read/28330882/adiponectin-and-resistin-potential-metabolic-signals-affecting-hypothalamo-pituitary-gonadal-axis-in-females-and-males-of-different-species
#2
REVIEW
Agnieszka Rak, Namya Mellouk, Pascal Froment, Joëlle Dupont
Adipokines, including adiponectin and resistin, are cytokines produced mainly by the adipose tissue. They play a significant role in metabolic functions that regulate the insulin sensitivity and inflammation. Alterations in adiponectin and resistin plasma levels, or their expression in metabolic and gonadal tissues, are observed in some metabolic pathologies, such as obesity. Several studies have shown that these two hormones and the receptors for adiponectin, AdipoR1 and AdipoR2 are present in various reproductive tissues in both sexes of different species...
June 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28258556/klinefelter-syndrome-cardiovascular-abnormalities-and-metabolic-disorders
#3
REVIEW
A E Calogero, V A Giagulli, L M Mongioì, V Triggiani, A F Radicioni, E A Jannini, D Pasquali
Klinefelter syndrome (KS) is one of the most common genetic causes of male infertility. This condition is associated with much comorbidity and with a lower life expectancy. The aim of this review is to explore more in depth cardiovascular and metabolic disorders associated to KS. KS patients have an increased risk of cerebrovascular disease (standardized mortality ratio, SMR, 2.2; 95% confidence interval, CI, 1.6-3.0), but it is not clear whether the cause of the death is of thrombotic or hemorrhagic nature...
March 3, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28213128/quantitative-proteomic-analysis-of-human-testis-reveals-system-wide-molecular-and-cellular-pathways-associated-with-non-obstructive-azoospermia
#4
Mehdi Alikhani, Mehdi Mirzaei, Marjan Sabbaghian, Pouria Parsamatin, Razieh Karamzadeh, Samane Adib, Niloofar Sodeifi, Mohammad Ali Sadighi Gilani, Masoud Zabet-Moghaddam, Lindsay Parker, Yunqi Wu, Vivek Gupta, Paul A Haynes, Hamid Gourabi, Hossein Baharvand, Ghasem Hosseini Salekdeh
Male infertility accounts for half of the infertility problems experienced by couples. Azoospermia, having no measurable level of sperm in seminal fluid, is one of the known conditions resulting in male infertility. In order to elucidate the complex molecular mechanisms causing male azoospermia, label-free quantitative shotgun proteomics was carried out on testicular tissue specimens from patients with obstructive azoospermia and non-obstructive azoospermia, including maturation arrest (MA) and Sertoli cell only syndrome (SCOS)...
February 15, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28165461/structure-of-the-homodimeric-androgen-receptor-ligand-binding-domain
#5
Marta Nadal, Stefan Prekovic, Nerea Gallastegui, Christine Helsen, Montserrat Abella, Karolina Zielinska, Marina Gay, Marta Vilaseca, Marta Taulès, Adriaan B Houtsmuller, Martin E van Royen, Frank Claessens, Pablo Fuentes-Prior, Eva Estébanez-Perpiñá
The androgen receptor (AR) plays a crucial role in normal physiology, development and metabolism as well as in the aetiology and treatment of diverse pathologies such as androgen insensitivity syndromes (AIS), male infertility and prostate cancer (PCa). Here we show that dimerization of AR ligand-binding domain (LBD) is induced by receptor agonists but not by antagonists. The 2.15-Å crystal structure of homodimeric, agonist- and coactivator peptide-bound AR-LBD unveils a 1,000-Å(2) large dimerization surface, which harbours over 40 previously unexplained AIS- and PCa-associated point mutations...
February 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/27891185/spermatozoal-cell-death-inducing-dna-fragmentation-factor-%C3%AE-like-effector-a-cidea-gene-expression-and-dna-fragmentation-in-infertile-men-with-metabolic-syndrome-and-normal-seminogram
#6
Ayman Z Elsamanoudy, Hussein Abdelaziz Abdalla, Mohammed Hassanien, Mohammad A Gaballah
BACKGROUND: This is the first study to investigate spermatozoal cell death-inducing DNA fragmentation factor-α-like effector A (CIDEA) gene expression and DNA fragmentations in the spermatozoa of men diagnosed with metabolic syndrome (MS) who have normal seminograms with unexplained infertility, and to correlate these parameters with seminal glucose concentration. METHODS: This study included 120 participants: 75 male subjects with MS (38 fertile and 37 infertile), and a control group of 45 fertile males without MS...
2016: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/27799629/oxidative-stress-and-polycystic-ovary-syndrome-evaluation-during-ovarian-stimulation-for-icsi
#7
Anderson Sanches de Melo, Jhenifer Kliemchen, Alceu Afonso Jordão Junior, Rui A Ferriani, Paula Andrea Navarro
Oxidative stress (OS) may affect natural fertility and the results of assisted reproduction techniques (ARTs). Subfertility associated with polycystic ovary syndrome (PCOS) may be related to OS. This process may intensify during controlled ovarian stimulation (COS) for ARTs because of increased ovarian metabolic activity and hypoestrogenism with the use of gonadotropin-releasing hormone agonists (GnRHas). The objective of this study was to investigate the presence of systemic OS in non-stimulated cycles and to determine OS markers (malondialdehyde [MDA], advanced oxidation protein products [AOPP], hydroperoxides [FOX], glutathione [GSH], and vitamin E) during COS in non-obese infertile women with and without PCOS who were subjected to ARTs...
October 31, 2016: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/27752262/effect-of-myoinositol-and-antioxidants-on-sperm-quality-in-men-with-metabolic-syndrome
#8
Mario Montanino Oliva, Elisa Minutolo, Assunta Lippa, Paola Iaconianni, Alberto Vaiarelli
This prospective longitudinal study investigated the effects of a dietary supplement in patients affected by reduced sperm motility (asthenospermic males) with metabolic syndrome. The product tested was Andrositol®, which contains myoinositol (MI) as principal compound, in association with other molecules, and the parameters evaluated were semen characteristics as well as hormone and metabolic profiles. The inclusion criteria were subjects aged over 18 years, with asthenospermia and metabolic syndrome. The exclusion criteria were presence of cryptorchidism, varicocele, and prostatitis...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27696500/the-rs2274911-polymorphism-in-gprc6a-gene-is-associated-with-insulin-resistance-in-normal-weight-and-obese-subjects
#9
Andrea Di Nisio, Maria Santa Rocca, Gian Paolo Fadini, Luca De Toni, Giorgio Marcuzzo, Maria Cristina Marescotti, Marta Sanna, Mario Plebani, Roberto Vettor, Angelo Avogaro, Carlo Foresta
OBJECTIVE: Identification of the novel endocrine role of osteocalcin (OC) and its receptor GPRC6A has given rise to a new branch of research in OC/GPRC6A axis related to glucose metabolism. GPRC6A- and OC-deficient mice share features of the metabolic syndrome, in addition to male infertility. Recently, the polymorphism rs2274911 in GPRC6A was shown to be associated with testicular impairment. We aimed to investigate the role of rs2274911 polymorphism in glucose and lipid metabolism in a cohort of normal weight and obese subjects DESIGN, PATIENTS, SETTINGS: A total of 392 male and females, including 218 obese patients and 174 age-matched normal weight controls, were retrospectively selected...
October 1, 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
#10
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/27304785/a-comparison-of-the-hormonal-profile-of-early-androgenetic-alopecia-in-men-with-the-phenotypic-equivalent-of-polycystic-ovarian-syndrome-in-women
#11
Sarita Sanke, Ram Chander, Anju Jain, Taru Garg, Pravesh Yadav
IMPORTANCE: Early androgenetic alopecia (AGA) is patterned hair loss occurring before age 30 years. Early AGA in men is frequently reported as the phenotypic equivalent of polycystic ovarian syndrome (PCOS) in women, which carries the risk of developing obesity, metabolic syndrome, and cardiovascular diseases. Very few studies have been conducted to evaluate this. OBJECTIVE: To study the hormonal profile of men with early AGA and to evaluate if early AGA in men can be considered as the phenotypic equivalent of PCOS, the associated risks of which are well known...
September 1, 2016: JAMA Dermatology
https://www.readbyqxmd.com/read/27062222/a-high-fat-diet-negatively-affects-rat-sperm-mitochondrial-respiration
#12
A Ferramosca, A Conte, N Moscatelli, V Zara
Recent evidences have linked abdominal obesity, insulin resistance, and dyslipidemia to male infertility. Since a defective energy metabolism may play an important role in the impairment of sperm quality, the aim of this study is to investigate the sperm energetic metabolism in rats fed with a high-fat diet, an animal model associated with metabolic syndrome development. Sexually mature male Sprague-Dawley rats were divided into two groups and fed for 4 weeks a standard diet (control group) or a diet enriched in 35% of fat (high fat group)...
May 2016: Andrology
https://www.readbyqxmd.com/read/26789125/the-klinefelter-syndrome-is-associated-with-high-recurrence-of-copy-number-variations-on-the-x-chromosome-with-a-potential-role-in-the-clinical-phenotype
#13
M S Rocca, V Pecile, L Cleva, E Speltra, R Selice, A Di Mambro, C Foresta, A Ferlin
The Klinefelter syndrome (KS) is the most frequent sex chromosomal disorder in males, characterized by at least one supernumerary X chromosome (most frequent karyotype 47,XXY). This syndrome presents with a broad range of phenotypes. The common characteristics include small testes and infertility, but KS subjects are at increased risk of hypogonadism, cognitive dysfunction, obesity, diabetes, metabolic syndrome, osteoporosis, and autoimmune disorders, which are present in variable proportion. Although part of the clinical variability might be linked to a different degree of testicular function observed in KS patients, genetic mechanisms of the supernumerary X chromosome might contribute...
March 2016: Andrology
https://www.readbyqxmd.com/read/26542707/the-role-of-prolactin-in-andrology-what-is-new
#14
REVIEW
Giulia Rastrelli, Giovanni Corona, Mario Maggi
Prolactin (PRL) has been long deemed as a hormone involved only in female reproduction. However, PRL is a surprising hormone and, since its identification in the 1970s, its attributed functions have greatly increased. However, its specific role in male health is still widely unknown. Recently, low PRL has been associated with reduced ejaculate and seminal vesicle volume in infertile subjects. In addition, in men consulting for sexual dysfunction, hypoprolactinemia has been associated with erectile dysfunction and premature ejaculation, findings further confirmed in the general European population and infertile men...
September 2015: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/26439743/bile-acid-alters-male-mouse-fertility-in-metabolic-syndrome-context
#15
Aurélie Vega, Emmanuelle Martinot, Marine Baptissart, Angélique De Haze, Frederic Vaz, Wim Kulik, Christelle Damon-Soubeyrand, Silvère Baron, Françoise Caira, David H Volle
Bile acids have recently been demonstrated as molecules with endocrine activities controlling several physiological functions such as immunity and glucose homeostases. They act mainly through two receptors, the nuclear receptor Farnesol-X-Receptor alpha (FXRα) and the G-protein coupled receptor (TGR5). These recent studies have led to the idea that molecules derived from bile acids (BAs) and targeting their receptors must be good targets for treatment of metabolic diseases such as obesity or diabetes. Thus it might be important to decipher the potential long term impact of such treatment on different physiological functions...
2015: PloS One
https://www.readbyqxmd.com/read/26236179/ampk-a-master-energy-regulator-for-gonadal-function
#16
REVIEW
Michael J Bertoldo, Melanie Faure, Joëlle Dupont, Pascal Froment
From C. elegans to mammals (including humans), nutrition and energy metabolism significantly influence reproduction. At the cellular level, some detectors of energy status indicate whether energy reserves are abundant (obesity), or poor (diet restriction). One of these detectors is AMPK (5' AMP-activated protein kinase), a protein kinase activated by ATP deficiency but also by several natural substances such as polyphenols or synthetic molecules like metformin, used in the treatment of insulin resistance. AMPK is expressed in muscle and liver, but also in the ovary and testis...
2015: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/25945117/metabolomics-analysis-of-seminal-plasma-in-infertile-males-with-kidney-yang-deficiency-a-preliminary-study
#17
Xiang Chen, Chao Hu, Jican Dai, Lei Chen
Traditional Chinese medicine (TCM) is an important treatment for male infertility, and its application to therapy is dependent on differentiation of TCM syndromes. This study aims to investigate the changes in metabolites and metabolic pathways in infertile males with Kidney-Yang Deficiency syndrome (KYDS) via metabolomics approaches. Seminal plasma samples were collected from 18 infertile males with KYDS and 18 fertile males. Liquid chromatography and mass spectrometry were used to characterize metabolomics profiles...
2015: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/25879484/deregulation-of-sertoli-and-leydig-cells-function-in-patients-with-klinefelter-syndrome-as-evidenced-by-testis-transcriptome-analysis
#18
Marco D'Aurora, Alberto Ferlin, Marta Di Nicola, Andrea Garolla, Luca De Toni, Sara Franchi, Giandomenico Palka, Carlo Foresta, Liborio Stuppia, Valentina Gatta
BACKGROUND: Klinefelter Syndrome (KS) is the most common abnormality of sex chromosomes (47,XXY) and represents the first genetic cause of male infertility. Mechanisms leading to KS testis degeneration are still not completely defined but considered to be mainly the result of germ cells loss. In order to unravel the molecular basis of global testis dysfunction in KS patients, we performed a transcriptome analysis on testis biopsies obtained from 6 azoospermic non-mosaic KS patients and 3 control subjects...
2015: BMC Genomics
https://www.readbyqxmd.com/read/25813067/health-risk-of-exposure-to-bisphenol-a-bpa
#19
Aleksandra Konieczna, Aleksandra Rutkowska, Dominik Rachoń
Bisphenol A (BPA) belongs to chemicals that are produced in large quantities worldwide. It is commonly used as monomer in polycarbonate synthesis, plasticizer in the production of epoxy resins, as well as an additive for the elimination of surfeit of hydrochloric acid during the polyvinyl chloride (PVC) production. BPA is not only used in the production of plastics intended to a direct contact with food, including plastic packaging and kitchenware, but also in inner coatings of cans and jar caps. There are various routes of human exposure to this substance such as oral, by inhalation and transdermal...
2015: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/25803269/maternal-smoking-dysregulates-protein-expression-in-second-trimester-human-fetal-livers-in-a-sex-specific-manner
#20
Panagiotis Filis, Nalin Nagrath, Margaret Fraser, David C Hay, John P Iredale, Peter O'Shaughnessy, Paul A Fowler
CONTEXT: Maternal smoking during pregnancy has adverse effects on the offspring (eg, increased likelihood of metabolic syndrome and infertility), which may involve alterations in fetal liver function. OBJECTIVE: Our aim was to analyze, for the first time, the human fetal liver proteome to identify pathways affected by maternal smoking. DESIGN: Fetal liver proteins extracted from elective second trimester pregnancy terminations (12-16 weeks of gestation) were divided in four balanced groups based on sex and maternal smoking...
June 2015: Journal of Clinical Endocrinology and Metabolism
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