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https://www.readbyqxmd.com/read/29457367/sperm-morphological-normality-under-high-magnification-is-correlated-to-male-infertility-and-predicts-embryo-development
#1
B F Zanetti, D P A F Braga, R R Provenza, R C S Figueira, A Iaconelli, E Borges
Human sperm morphology has been described as an essential parameter for the diagnosis of male infertility and a prognostic indicator of natural or assisted pregnancies. Nevertheless, standard morphological assessment remains a subjective analysis and its impact on intracytoplasmic sperm injection (ICSI) is also of limited value. The objective of this prospective cohort study was to investigate whether motile sperm organelle morphology examination (MSOME) can improve semen analysis by better defining male infertility and providing a better prognosis for ICSI up to a year later...
February 18, 2018: Andrology
https://www.readbyqxmd.com/read/29457365/male-infertility-is-associated-with-altered-treatment-course-of-men-with-cancer
#2
O Eminaga, S Li, L C Baker, J D Brooks, M L Eisenberg
This study aims to evaluate whether cancer treatments differ in infertile men compared to men who have undergone vasectomy and age-matched controls. We analyzed subjects from the Truven Health MarketScan Claims database from 2001 to 2009. Infertile men were identified through diagnosis and treatment codes. Comparison groups included vasectomized men and an age-matched cohort who were not infertile and had not undergone vasectomy. We considered cancer types previously associated with infertility that were diagnosed after the diagnosis of infertility...
February 18, 2018: Andrology
https://www.readbyqxmd.com/read/29457364/transmission-electron-microscopy-analysis-of-the-origin-and-incidence-of-sperm-intranuclear-cytoplasmic-retention-in-fertile-and-teratozoospermia-men
#3
W-J Zhu
The human sperm nucleus contains cytoplasm. However, the origin and incidence of human sperm intranuclear cytoplasmic retention (INCR) remain unknown. The objectives of this study were to observe the morphological origin of INCR within the seminiferous epithelium and investigate the incidence of INCR in fertile and teratozoospermia men using transmission electron microscopy (TEM). By TEM, INCR initially appeared in elongating round spermatid nuclei and varied in size, number, shape, content, location and distribution within sperm nuclei...
February 18, 2018: Andrology
https://www.readbyqxmd.com/read/29453817/endocrine-and-psychological-aspects-of-sexual-dysfunction-in-klinefelter-patients
#4
A Ferlin, R Selice, S Angelini, M Di Grazia, N Caretta, F Cavalieri, A Di Mambro, C Foresta
Klinefelter syndrome is a frequent cause of hypogonadism, but despite hundreds of publications on different aspects of Klinefelter syndrome, only a few studies dealt with sexual dysfunction. In particular, testosterone is critical for various aspects of sexual response, but its role on sexuality in Klinefelter syndrome patients is debatable and no studies have evaluated the efficacy of testosterone treatment on sexual dysfunction in these subjects. Furthermore, the impact of psychological and relational aspects on sexual function of Klinefelter syndrome subjects is poorly defined...
February 17, 2018: Andrology
https://www.readbyqxmd.com/read/29453813/association-between-two-common-transitions-of-h2bfwt-gene-and-male-infertility-a-case-control-meta-and-structural-analysis
#5
M Teimouri, H Najaran, A Hosseinzadeh, T Mazoochi
H2BFWT is one of the testis-specific histones that plays a fundamental role in spermatogenesis, and single nucleotide polymorphisms (SNPs) in this gene may result in male infertility. This study aimed to investigate the association between -9C>T and 368A>G transitions of H2BFWT gene and male infertility through a case-control, meta-analysis, and a bioinformatics approach. In this case-control study, 490 subjects including 240 idiopathic infertile men and 250 healthy controls were included. The -9C>T and 368A>G SNPs genotyping were performed by a PCR-RFLP method...
February 17, 2018: Andrology
https://www.readbyqxmd.com/read/29438593/what-happens-to-the-unsuccessful-spermatozoa
#6
K M Engel, C H Springsguth, S Grunewald
To study apoptosis as a functional pathway in mature spermatozoa and apoptosis correlated to the acrosome reaction via the intracellular calcium concentration, semen samples from 27 healthy human donors were treated with inducers of apoptosis (betulinic acid, thapsigargin), inducers of the acrosome reaction (thapsigargin, calcium ionophore) or hydrogen peroxide to produce reactive oxygen species with and without prior incubation with a calcium chelator. Computer-assisted sperm analysis, flow cytometry, and transmission electron microscopy were performed to analyze changes in the acrosomal status and in apoptotic features...
February 13, 2018: Andrology
https://www.readbyqxmd.com/read/29409138/treatment-of-semen-samples-with-%C3%AE-chymotrypsin-alters-the-expression-pattern-of-sperm-functional-proteins-a-pilot-study
#7
M K Panner Selvam, A Agarwal, R Sharma, L Samanta
Semen hyperviscosity delays the liquefaction of semen sample and is subjected to limited proteolysis by addition of α-chymotrypsin to reduce the viscosity. α-Chymotrypsin is a proteolytic enzyme involved in degradation of the proteins and polypeptides. Even though α-chymotrypsin improves the handling of hyperviscous samples, its effect on the sperm proteins is not clear. This study was aimed to evaluate the alteration in the expression of sperm functional proteins in samples treated with α-chymotrypsin...
February 6, 2018: Andrology
https://www.readbyqxmd.com/read/29409132/leydig-cell-insufficiency-in-hypospermatogenesis-a-paracrine-effect-of-activin-inhibin-signaling
#8
REVIEW
S J Winters, J P Moore, B J Clark
Clinical findings and a variety of experimental models indicate that Leydig cell dysfunction accompanies damage to the seminiferous tubules with increasing severity. Most studies support the idea that intratesticular signaling from the seminiferous tubules to Leydig cells regulates steroidogenesis, which is disrupted when hypospermatogenesis occurs. Sertoli cells seem to play a pivotal role in this process. In this review, we summarize relevant clinical and experimental observations and present evidence to support the hypothesis that testicular activin signaling and its regulation by testicular inhibin may link seminiferous tubular dysfunction to reduced testosterone biosynthesis...
February 6, 2018: Andrology
https://www.readbyqxmd.com/read/29381885/differential-expression-profiles-of-conserved-snail-transcription-factors-in-the-mouse-testis
#9
D J Micati, G R Hime, E A McLaughlin, H E Abud, K L Loveland
Snail transcription factors are key regulators of cellular transitions during embryonic development and tumorigenesis. The closely related SNAI1 and SNAI2 proteins induce epithelial-mesenchymal transitions (EMTs), acting predominantly as transcriptional repressors, while the functions of SNAI3 are unknown. An initial examination of Snai2-deficient mice provided evidence of deficient spermatogenesis. To address the hypothesis that Snail proteins are important for male fertility, this study provides the first comprehensive cellular expression profiles of all three mammalian Snail genes in the post-natal mouse testis...
January 30, 2018: Andrology
https://www.readbyqxmd.com/read/29378089/impaired-sperm-function-in-infertile-men-relies-on-the-membrane-sterol-pattern
#10
A Garolla, I Šabović, S Tescari, L De Toni, M Menegazzo, I Cosci, V De Filippis, M Giarola, C Foresta
Membrane cholesterol removal appears a key step for the gain of fertility potential during sperm maturation. However, the membrane sterol pattern in sperm cells from infertile patients, with impaired sperm parameters, has been poorly investigated. To elucidate a causative link between sperm membrane composition in male fertility, here we have investigated the levels of cholesterol and its oxidized derivatives 7β-hydroxycholesterol and 7-keto-cholesterol in sixteen infertile patients with oligo-asthenozoospermia and 16 normozoospermic (N) fertile subjects...
January 29, 2018: Andrology
https://www.readbyqxmd.com/read/29359516/seminal-sirt1-expression-in-infertile-oligoasthenoteratozoospermic-men-with-varicocoele
#11
T Mostafa, N Nabil, L Rashed, K Makeen, M A El-Kasas, H A Mohamaed
In a case-controlled study, we assessed the expressed seminal NAD-dependent protein deacetylase (SIRT1) expression in infertile oligoasthenoteratozoospermic (OAT) men associated with varicocoele. Our study involved 81 men, recruited from the University hospitals, after ethical approval and informed consent. They were allocated into fertile normozoospermic men (n = 23), infertile OAT men without varicocoele (n = 23) and infertile OAT men with varicocoele (n = 35). Inclusion criteria consisted of confirmation of abnormal semen parameters and normal female partners whereas exclusion criteria were leukocytospermia, tobacco smoking, hormonal therapy, immunological disorders, dyslipidemia, hypogonadism, cardiovascular disorders, morbid obesity, and hepatic or renal failures...
January 22, 2018: Andrology
https://www.readbyqxmd.com/read/29359412/influences-of-dietary-supplementation-with-lepidium-meyenii-maca-on-stallion-sperm-production-and-on-preservation-of-sperm-quality-during-storage-at-5%C3%A2-%C3%A2-c
#12
C Del Prete, S Tafuri, F Ciani, M P Pasolini, F Ciotola, S Albarella, D Carotenuto, V Peretti, N Cocchia
Stallion semen is damaged by oxidative stress during cooling and transport. Semen processing and extenders have been tested to improve the fertilizing capacity of semen and to preserve semen during transport. Dietary supplementation with natural antioxidants has been proposed to prevent oxidative damages. In this study, for the first time, the effect of dietary supplementation with Lepidium meyenii (Maca) on the characteristics of fresh and chilled stallion semen was evaluated. Maca is a traditional Andean crop used as a nutraceutical for the fertility-enhancing properties that are linked with antioxidant activity...
January 22, 2018: Andrology
https://www.readbyqxmd.com/read/29314770/calibration-of-redox-potential-in-sperm-wash-media-and-evaluation-of-oxidation-reduction-potential-values-in-various-assisted-reproductive-technology-culture-media-using-mioxsys-system
#13
M K Panner Selvam, R Henkel, R Sharma, A Agarwal
Oxidation-reduction potential describes the balance between the oxidants and antioxidants in fluids including semen. Various artificial culture media are used in andrology and IVF laboratories for sperm preparation and to support the development of fertilized oocytes under in vitro conditions. The composition and conditions of these media are vital for optimal functioning of the gametes. Currently, there are no data on the status of redox potential of sperm processing and assisted reproduction media. The purpose of this study was to compare the oxidation-reduction potential values of the different media and to calibrate the oxidation-reduction potential values of the sperm wash medium using oxidative stress inducer cumene hydroperoxide and antioxidant ascorbic acid...
January 3, 2018: Andrology
https://www.readbyqxmd.com/read/29266877/grafts-for-peyronie-s-disease-a-comprehensive-review
#14
REVIEW
B Garcia-Gomez, D Ralph, L Levine, I Moncada-Iribarren, R Djinovic, M Albersen, E Garcia-Cruz, J Romero-Otero
The difficulty implicit in combining all the characteristics that an ideal patch to treat Peyronie's disease with a lengthening procedure should have, together with the challenges of comparing results from different series, means that the ideal patch has yet to be determined. Our objective with this review was to determine whether any given patch type is preferable to the others based on the evaluation of the results of published studies. A systematic search of the literature was conducted from PubMed until December 2016...
December 20, 2017: Andrology
https://www.readbyqxmd.com/read/29266868/serum-concentration-of-anti-m%C3%A3-llerian-hormone-is-not-associated-with-semen-quality
#15
L Aksglaede, I A Olesen, E Carlsen, J H Petersen, A Juul, N Jørgensen
Impaired semen quality is frequent in Western countries and is the main reason or contributing reason in up to 50% of cases of couple infertility. Male factor infertility is mainly determined by examination of semen samples according to the World Health Organization's 2010 guidelines. AMH has both autocrine and paracrine properties through a direct effect via the AMH type II receptor and is therefore thought to be involved in spermatogenesis. We aimed to study the association between the serum concentration of AMH and semen quality in a cross-sectional study including 970 young Danish men from the general population...
December 20, 2017: Andrology
https://www.readbyqxmd.com/read/29266782/dietary-habits-and-semen-parameters-a-systematic-narrative-review
#16
REVIEW
E Ricci, S Al-Beitawi, S Cipriani, A Alteri, F Chiaffarino, M Candiani, S Gerli, P Viganó, F Parazzini
Semen quality and male fertility are declining worldwide. As it was observed that physiologic and pathologic processes of spermatogenesis can be influenced by diet, the relation between dietary habits and semen parameters has been the focus of much interest. To review the human observational studies on this issue, we performed a systematic literature search, up to November 2016 (MEDLINE and EMBASE). We included all observational full-text papers reporting the relation between dietary habits and semen parameters...
December 20, 2017: Andrology
https://www.readbyqxmd.com/read/29216686/congenital-bilateral-absence-of-the-vas-deferens-as-an-atypical-form-of-cystic-fibrosis-reproductive-implications-and-genetic-counseling
#17
REVIEW
D A S de Souza, F R Faucz, L Pereira-Ferrari, V S Sotomaior, S Raskin
Congenital bilateral absence of the vas deferens (CBAVD) is found in 1% to 2% of males with infertility and is present in 6% of obstructive azoospermia cases. Nearly 95% of men with cystic fibrosis (CF, an autosomal recessive disorder) have CBAVD. There are genetic links between CBAVD and CF. Some mutations in the gene encoding cystic fibrosis transmembrane conductance regulator (CFTR) can lead to CBAVD as a monosymptomatic form of CF. With the use of assisted reproductive techniques (ART), especially testicular or epididymal sperm aspiration, intracytoplasmic sperm injection, and in vitro fertilization, it is possible that men with CBAVD can produce offspring...
December 7, 2017: Andrology
https://www.readbyqxmd.com/read/29216684/the-impact-of-corynebacterium-glucuronolyticum-on-semen-parameters-a-prospective-pre-post-treatment-study
#18
T Meštrović, B Bedenić, J Wilson, S Ljubin-Sternak, M Sviben, M Neuberg, R Ribić, G Kozina, Z Profozić
Corynebacterium glucuronolyticum (C. glucuronolyticum) is a rare isolate that is only recently being acknowledged as a potential urogenital pathogen. The bibliographical references on this bacterial species are scarce, and its influence on all semen parameters was hitherto unknown - therefore, the aim of this study was to evaluate its effects on a range of sperm quality parameters. A prospective approach to compare semen parameters before and after treatment was used in this study. C. glucuronolyticum in semen specimens was identified using analytical profile index biotyping system (API Coryne) and additionally confirmed by matrix-assisted laser desorption/ionization time-of-flight mass-spectrometry (MALDI-TOF MS), with the determination of antimicrobial susceptibility by Kirby-Bauer method...
December 7, 2017: Andrology
https://www.readbyqxmd.com/read/29211946/a-rare-anos1-variant-in-siblings-with-kallmann-syndrome-identified-by-whole-exome-sequencing
#19
D M Lopategui, A J Griswold, H Arora, R I Clavijo, M Tekin, R Ramasamy
Kallmann syndrome is a rare genetic condition causing congenital hypogonadotropic hypogonadism. It presents with delayed puberty, anosmia, and infertility. Here, we set out to identify a causative DNA variant for Kallmann syndrome in two affected brothers of Hispanic ancestry. The male siblings presented with a clinical diagnosis of Kallmann syndrome (anosmia, delayed puberty, azoospermia, and undetectable luteinizing hormone and follicle stimulating hormone levels). Genetic variations were investigated by whole exome sequencing...
December 6, 2017: Andrology
https://www.readbyqxmd.com/read/29195031/surgical-correction-of-peyronie-s-disease-via-tunica-albuginea-plication-long-term-follow-up
#20
M Seveso, S Melegari, O De Francesco, A Macchi, J Romero Otero, G Taverna, G Bozzini
Peyronie's disease (PD) is an acquired connective tissue disorder of the tunica albuginea with fibrosis and inflammation that lead to palpable plaques formation, penile curvature, and pain during erection. Patients report negative effects on main domains such as physical appearance and self-image, sexual function, and performance. The aim of this study was to evaluate plication of the albuginea outcomes after a long-term follow-up period. Between 1998 and 2006, a total of 204 patients with PD underwent surgical correction with albuginea plication technique...
December 1, 2017: Andrology
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