Male Infertility Articles

Approximately 1 in 20 young men today have sperm counts low enough to impair fertility, whereas this may not have been the case historically. The cause(s) of such a decline in male reproductive health is unknown, despite it being a global health issue.

In recent decades, the incidence of male infertility has been increasing continuously both worldwide and in Hungary and is becoming a more and more central issue. Millions of men at the reproductive age are affected by male infertility.

46,XX male sex reversal syndrome is one of the rarest sex chromosomal aberrations. The presence of SRY gene on one of the X chromosomes is the most frequent cause of this syndrome. Based on Y chromosome profile, there are SRY-positive and SRY-negative forms.

Interest in radiation-related health problems has been growing with the increase in the number of workers in radiation-related jobs. Although an occupational level of radiation exposure would not likely cause azoospermia, several studies have reported the relation between radiation exposure and azoospermia after accidental or therapeutic radiation exposure.

In our study, we sought answers to many questions about male infertility from a different perspective. The first step in male infertility is anamnesis, physical examination and sperm count. The European Academy of Andrology recommends examination of genetic causes in individuals with fewer than 5million/ml semen counts.

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.

Male infertility related to professional reprotoxic exposure has been assessed in several studies. Collaboration between occupational physicians and patients can yield information about the preventive measures that can be taken to avoid such exposure.

Overweight and obesity are known risk factors for several diseases, including diabetes, coronary heart disease, stroke, hypertension, and obstructive sleep apnea. All of these disorders, besides severe obesity itself, may negatively impact the sexual and reproductive health of both male and female individuals.

Aims: In the last decades, the number of infertile males increased worldwide which gained more focus. The extent to which a person or a couple is able to cope adaptively with the problem of infertility depends on the combined effect of several variables.

Male factor infertility plays a significant role in infertility. Many factors have been associated with male infertility; however, the link between many sports and recreational factors and male reproduction remains poorly characterized.

Accumulating evidence indicates that varicocele repair improves sperm quality. However, longitudinal changes in sperm parameters and predictors of improved semen characteristics after surgery have not been fully investigated.

Sperm chromatin integrity is essential for normal embryo development and pregnancy outcome. Sperm DNA fragmentation (SDF) testing constitutes a diagnostic tool to measure the proportion of sperm with damaged chromatin in the ejaculate.

To examine whether mutations of the CDK2 gene exist in Chinese men with non-obstructive azoospermia (NOA) with different histopathology, we recruited 175 Chinese men with idiopathic NOA who underwent testis biopsy, including hypospermatogenesis, germ cell maturation arrest and Sertoli cell only syndrome.

We aimed to identify what information patients and partners are seeking on male infertility forums. Online discussion boards were identified. Posts were analysed in three steps: open coding, axial coding and selective coding, to determine common themes.

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.

Chronic prostatitis is a risk factor for impaired male fertility potential, and anti-sperm antibodies (ASAs) cause the autoimmune disease immune infertility, which has a negative effect on semen parameters.

Many researchers have shown that renin-angiotensin system (RAS) is involved in various important aspects of male reproduction. In this study, we assessed whether abnormal levels of seminal angiotensinogen (AGT) may be associated with semen parameters in infertile males.

For improving the evaluation of male infertility, many parameters were studied and reported in earlier literature. The aim of this study was to estimate the frequency of sperm aneuploidy and DNA fragmentation in infertile men and to assess the correlation between sperm aneuploidy and DNA fragmentation.

Voltage-dependent anion channel (VDAC) is a multifunctional channel protein across the outer mitochondrial membrane of somatic cells and participates in many physiological and pathophysiological processes.

Although vitamin D deficiency is one of the most common health problems throughout the world, including Iran, conflicting information exists on the potential association between serum vitamin D levels and semen quality.

Methylenetetrahydrofolate reductase is one of the key enzymes in folate metabolism. But the association between polymorphism and the risk of male infertility is still controversial. Therefore, this study used a meta-analysis on the collection of data to analyze MTHFR gene C677T polymorphism (known as c.

Many studies have demonstrated that lifestyle factors can affect sperm quality and fertility. Sperm Telomere Length (STL) has been reported as potential biomarker or sperm quality. However, no studies have investigated the how lifestyle factors can effect STL and associated clinical outcomes.

This study was designed to explore the cyproterone acetate (CPA)-induced andrological hypofunction and its correction by oral administration of lycopene. In this concern, spermatogenic, biochemical, histological and genomic profiles were studied.

Growing evidence in the literature suggests that obesity is capable of altering reproductive hormone levels and male fertility. Effects on classic semen parameters and sperm DNA fragmentation (SDF), however, have not been properly established.

BERKELEY, CA (UroToday.com) - The cell phone technology is a vital part of our modern life and its use is expanding to not only the traditional voice conversations but also to deliver news, high resolution pictures, and Internet access.

BERKELEY, CA (UroToday.com) - The present article details several common scenarios of referral for men with a prior history of cryptorchidism and orchidopexy seeking advice for infertility, and examines the association between cryptorchidism and male infertility.

BERKELEY, CA (UroToday.com) - In the past, men who were azoospermic after chemotherapy were routinely considered sterile, and fertility options included only donor sperm (substitutive therapy).

Male infertility affects ∼7% of men, but its causes remain poorly understood. The most severe form is non-obstructive azoospermia (NOA), which is, in part, caused by an arrest at meiosis. So far, only a few validated disease-associated genes have been reported.

Recently, alterations in miRNAs expression profile in semen have been linked to damaged spermatogenesis, suggesting miRNAs could be used as potential infertility biomarkers. In previous animal studies, miR-20a-5p was found to be down-expressed in low motile sperm, implying its potential target of genes associated with cell apoptosis.

Lower semen quality is associated with increased mortality and morbidity, which may include osteoporosis.

To assess whether infertile men have a lower bone mineral density (BMD) compared with fertile men at the time of fertility workup.

Multiparametric testicular ultrasound and magnetic resonance imaging (MRI) findings were analyzed in a series of 10 infertile asymptomatic men presenting with pathologically confirmed burned-out testicular tumors.

With cannabis consumption on the rise, and use prominent among males of reproductive age, it is essential to understand the potential impact of cannabis on male fertility. Here we review the literature regarding cannabis' effects on male fertility.

Can cannabis consumption alter sperm nuclear integrity in infertile men?

A retrospective cross-sectional study conducted between July 2003 and December 2013, which included 54 men who consulted for male-factor infertility.

Epidemiological studies report an increase of pathologies of male reproductive tracts and suggest a link between this trend and the increased exposure of men to endocrine disruptors (EDs). The mechanisms by which EDs impact male fertility are far to be elucidated although DNA, chromatin and epigenome of spermatozoa appear to be relevant targets for these molecules.

The pituitary gonadotropins, luteinizing hormone (LH), and follicle-stimulating hormone (FSH) play a pivotal role in reproduction. The synthesis and secretion of gonadotropins are regulated by complex interactions among several endocrine, paracrine, and autocrine factors of diverse chemical structure.

Imaging can benefit clinicians in evaluating men with infertility or sexual dysfunction by giving an overview of a patient's overall clinical condition before undertaking an invasive procedure. An understanding of the limitations and advantages of image modalities used in clinical practice will ensure that clinicians can optimize patient care with imaging when necessary.

To study the pathologic findings among men evaluated for infertility.

A retrospective, single-center, cross-sectional study.

University hospital-based research center.

We included data from 1,213 medical records from infertile men referred for diagnostic work-up from 2005 to 2009.

Sperm motility is the most important parameter involved in the fertilization process and it is strictly required for reproductive success. Although sperm movements are essential for the physiologic fertilization process, the data, deriving from studies focused on the research of altered cell pathways involved in asthenozoospermia, offer only limited information about the molecular mechanism underlying sperm motility.

Assisted reproductive technologies involving the use of spermatozoa and eggs for in vitro fertilization (IVF) have come as the solution for many infertile couples to become parents. However, in some cases, the use of ejaculated spermatozoa delivers poor IVF performance.

Introduction Thousands of genes are implicated in spermatogenesis, testicular development and endocrine regulation of testicular function. The genetic contribution to male infertility is therefore considerable, and basic and clinical research in the last years found a number of genes that could potentially be used in clinical practice.

Oxidative stress (OS) is detrimental to sperm functions, and the oxidation reduction potential (ORP) is a good measure of OS as it considers the balance between oxidants and reductants. Total motile sperm count (TMSC) is viewed as the single most important semen analysis parameter that can predict male infertility severity, and its correlation with ORP has never been undertaken.

Cell-free seminal mRNA (cfs-mRNA) exists in the human ejaculate that is proposed as a potential noninvasive procedure to prognosis pathophysiological conditions. This study applied cfs-mRNA of ESX1, ZMYND15 and its target haploid genes (TNP1 and PRM1) to identify the presence of spermatozoa in men with azoospermia.

Transplantation of own cryostored spermatogonial stem cells (SSCs) is a promising technique for fertility restoration when the SSC pool has been depleted. In this regard, cryopreservation of pre-pubertal testicular tissue or SSCs suspensions before gonadotoxic therapies is ethically accepted and increasingly proposed.

Infertility affects about 15% of the couples of reproductive age. The male factor is involved in nearly 50% of infertility cases. Defective human sperm function has been associated with evidence of high levels of reactive oxygen species (ROS) and a resultant loss of fertilizing potential in vivo and in vitro.

The identification of new genes involved in sexual development and gonadal function as potential candidates causing male infertility is important for both diagnostic and therapeutic purposes. Deficiency of the onco-miRNA cluster miR-17∼92 has been shown to disrupt spermatogenesis, whereas mutations in its paralog cluster, miR-106b∼25, that is expressed in the same cells, were reported to have no effect on testis development and function.

To study the influence of a multicomponent nutrient dietary supplement on sperm parameters and pregnancy rates in idiopathic male infertility (IMI) with oligo-, astheno-, teratozoospermia.

A randomized double-blind placebo-controlled prospective parallel arms (1:1 allocation ratio) multi-center clinical trial.

The advent of modern treatments together with the improvement of the surgical techniques has significantly increased 5-year survival rates of young patients with cancer. Although the deleterious effects of chemotherapy and radiation are well documented, controversies exist about the effect of cancer itself on semen parameters before treatment.

Previous studies of aromatase inhibitors on male infertility have focused on men with low testosterone-oestradiol ratio of less than 10. Can aromatase inhibitors improve spermatogenesis in men with idiopathic male infertility with normal testosterone-oestradiol ratio?

Prospective study of men with idiopathic severe oligozoospermia (sperm concentration <5 million/ml) carried out between February 2015 and March 2017.

We aimed to analyse the relationship between sperm parameters and International Index of Erectile Function (IIEF) score, the Female Sexual Function Index (FSFI) score, the testosterone (T) level in infertile men and between FSFI score and partners' fertility.

Antioxidant supplementation in idiopathic male infertility has a beneficial effect on semen parameters. However, the molecular mechanism behind this effect has not been reported. The objective of this study was to evaluate the sperm proteome of idiopathic infertile men pre- and post-antioxidant supplementation.