scholarly journals Male fertility: a review of the publications from January - March 2021

2021 ◽  
Vol 9 (2) ◽  
pp. 142-149
Author(s):  
D. S. Rogozin

The article provides an overview of the most significant publications on the topic of male infertility. The main selection criteria were the practical significance of the article, as well as the impact factor of the journal in which it was published, according to the SCImago Journal Rank (SJR). As a result, a list of 10 works published in the first quarter (January - March) of 2021 was formed. The review included articles related to the following issues: sperm DNA fragmentation, the use of testicular spermatozoa in ART programs (assisted reproductive technologies), advanced paternal age, the role of the human papillomavirus for male fertility, hormonal modulation by clomiphene, the risk of birth defects in children in ART programs, andrological examination of patients with CFTR gene mutations. And also, an analysis of the new clinical guidelines of the American Urological Association (AUA) was carried out.

2020 ◽  
Vol 8 (2) ◽  
pp. 93-98 ◽  
Author(s):  
D. S. Rogozin

The article provides an overview of the most influential papers on the topic of “male infertility”. The selection criteria were the practical significance of the article and the impact factor of the journal in which it was published, according to SCImago Journal Rank (SJR). As a result, we created the list of 10 papers published in the I quarter (January – March) of 2020. The review included articles on the following issues: the effectiveness and safety of antioxidants, zinc and folic acid in the treatment of male infertility; the effect of obesity on sperm DNA-fragmentation; the possibility of obtaining of spermatogonia in children and adolescents with Kleinfelter syndrome; comparison of intracytoplasmic sperm injection (ICSI) and intracytoplasmic morphologically selected spermatozoa injection (IMSI); the reaction of the female reproductive system to the seminal fluid; viral profile in seminal fluid of men receiving the antiretroviral therapy, the effect of sleep duration on fertility and the risk of diabetes mellitus in children, conceived using assisted reproductive technologies.


2020 ◽  
Vol 8 (4) ◽  
pp. 122-128
Author(s):  
D. S. Rogozin

The article provides an overview of the most significant publications on the male infertility topic. The main selection criteria were considered the practical significance of the article, as well as the impact factor of the journal in which it was published, according to the SCImago Journal Rank (SJR). As a result, a list of 10 works published in the third quarter (July - September) of 2020 was formed. The review included articles on the following issues: redox balance in the male reproductive system, advanced paternal age, the effect of a new nasal form of testosterone on fertility, the correlation of PSA levels with infertility, as well as new data on the effect of COVID-19 on male fertility.


2021 ◽  
Vol 9 (3) ◽  
pp. 118-126
Author(s):  
D. S. Rogozin

The article provides an overview of the most significant publications on the topic of male infertility. The main selection criteria were considered the practical significance of the article, as well as the impact factor of the journal in which it was published, according to the SCImago Journal Rank (SJR). As a result, a list of 10 works published in the II quarter (April – June) of 2021 was formed. The review includes articles on the following issues: the effectiveness of repeated micro-TESE in non-obstructive azoospermia, the role of COVID-19 in male fertility, the effect of testosterone therapy on spermatogenesis, testicular microlithiasis, electroejaculation as a method of obtaining spermatozoa, harm from carrying cell phones near the genitals, prediction of the effectiveness of intrauterine insemination, the effect of advanced paternal age on sperm aneuploidy, and the importance of the microbiome for male fertility.


2020 ◽  
Vol 8 (1) ◽  
pp. 69-74 ◽  
Author(s):  
D. S. Rogozin

The article provides an overview of the most influential papers on the topic of «male infertility». The main selection criteria were the practical significance of the article and the impact factor of the journal in which it was published, according to SCImago Journal Rank (SJR). As a result, we created the list of 10 papers published in the IV quarter (October − December) of 2019. The review included articles on the following issues: the effectiveness and prognostic factors of the effectiveness of microsurgical testicular sperm extraction (micro-TESE), the significance of sperm DNA fragmentation and «advanced paternal age» in the effectiveness of assisted reproduction technologies (ART) procedures, the role of latent chlamydial infection in azoospermia, management of adolescents with Kleinfelter syndrome, the effectiveness and safety of aromatase inhibitors in treatment of male infertility, sperm microbiome, the association between ART procedures and the cancer risk in children, follicle-stimulating hormone (FSH) treatment of male idiopathic infertility.


2021 ◽  
Vol 9 (4) ◽  
pp. 147-155
Author(s):  
D. S. Rogozin

The article provides an overview of the most significant publications on the topic of male infertility. The main selection criteria were considered the practical significance of the article, as well as the impact factor of the journal in which it was published according to the SCImago Journal Rank (SJR). As a result, we formed a list of 10 articles published in the III quarter (July — September) of 2021. The review included articles concerning the following issues: the ability of oocytes to repair damaged DNA-chains of sperm cells, the effectiveness of ICSI in AZF-c microdeletions, the advanced paternal age, artificial intelligence in reproductive clinics, genetic causes of infertility, the effect of surgical treatment of varicocele concerning DNA fragmentation, the role of ICSI in the frequency of chromosomal abnormalities in offspring, the safety of COVID-19 vaccination for spermatogenesis, as well as the novel WHO 6 manual for semen investigation.


Genes ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 475
Author(s):  
Maria Santa Rocca ◽  
Ludovica Dusi ◽  
Andrea Di Nisio ◽  
Erminia Alviggi ◽  
Benedetta Iussig ◽  
...  

Telomeres are considered to be an internal biological clock, and their progressive shortening has been associated with the risk of age-related diseases and reproductive alterations. Over recent years, an increasing number of studies have focused on the association between telomere length and fertility, identifying sperm telomere length (STL) as a novel biomarker of male fertility. Although typically considered to be repeated DNA sequences, telomeres have recently been shown to also include a long non-coding RNA (lncRNA) known as TERRA (telomeric repeat-containing RNAs). Interestingly, males with idiopathic infertility show reduced testicular TERRA expression, suggesting a link between TERRA and male fertility. The aim of this study was to investigate the role of seminal TERRA expression in embryo quality. To this end, STL and TERRA expression were quantified by Real Time qPCR in the semen of 35 men who underwent assisted reproductive technologies (ART) and 30 fertile men. We found that TERRA expression in semen and STL was reduced in patients that underwent ART (both p < 0.001). Interestingly, TERRA and STL expressions were positively correlated (p = 0.010), and TERRA expression was positively associated with embryo quality (p < 0.001). These preliminary findings suggest a role for TERRA in the maintenance of sperm telomere integrity during gametogenesis, and for the first time, TERRA expression was found as a predictive factor for embryo quality in the setting of assisted reproduction.


Life ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 728
Author(s):  
Eguzkine Ochoa

Assisted reproductive technologies (ART) are the treatment of choice for some infertile couples and even though these procedures are generally considered safe, children conceived by ART have shown higher reported risks of some perinatal and postnatal complications such as low birth weight, preterm birth, and childhood cancer. In addition, the frequency of some congenital imprinting disorders, like Beckwith–Wiedemann Syndrome and Silver–Russell Syndrome, is higher than expected in the general population after ART. Experimental evidence from animal studies suggests that ART can induce stress in the embryo and influence gene expression and DNA methylation. Human epigenome studies have generally revealed an enrichment of alterations in imprinted regions in children conceived by ART, but no global methylation alterations. ART procedures occur simultaneously with the establishment and maintenance of imprinting during embryonic development, so this may underlie the apparent sensitivity of imprinted regions to ART. The impact in adulthood of imprinting alterations that occurred during early embryonic development is still unclear, but some experimental evidence in mice showed higher risk to obesity and cardiovascular disease after the restriction of some imprinted genes in early embryonic development. This supports the hypothesis that imprinting alterations in early development might induce epigenetic programming of metabolism and affect long-term health. Given the growing use of ART, it is important to determine the impact of ART in genomic imprinting and long-term health.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yulia A. Koloda ◽  
Yulia V. Denisova ◽  
Natalia M. Podzolkova

Abstract Polycystic ovary syndrome (PCOS) is one of the most common endocrinopathies in women of childbearing, which is defined by the accumulation of multiple, small fluid-filled ovarian cysts without the selection of a single dominant follicle. Most PCOS phenotypes are characterized by the absence of spontaneous ovulation, resistance toward ovulation inductors, the production of a large immature oocytes number, and the high prevalence of ovarian hyperstimulation syndrome, resulting in reduced assisted reproductive technologies (ART) programs effectiveness. The review analyses current data about the relationship between polymorphism genotypes of KISS genes, follicle stimulating hormone (FSH), luteinizing hormone (LH), anti-Müllerian hormone (AMH) and their receptors genes, gonadotropin-releasing hormone (GnRH), estrogen, and progesterone receptors genes, the PCOS risk and the features of ovarian response to stimulation during ART cycles. The use of single nucleotide polymorphisms (SNPs) as prognostic markers of ART programs outcomes would provide a personalized approach to the drugs and doses choice for ovarian stimulation and significantly increase the chance of pregnancy.


GYNECOLOGY ◽  
2021 ◽  
Vol 23 (3) ◽  
pp. 270-274
Author(s):  
Gunai R. Asfarova ◽  
Veronika I. Smol'nikova ◽  
Natalia P. Makarova ◽  
Iuliia S. Drapkina ◽  
Anastasiia P. Sysoeva ◽  
...  

Cumulus cells are essential during oocytes growth and development, as well as during their maturation and fertilization. Research results have shown that embryo co-cultivation with autologous cumulus cells increases the frequency of blastocyst formation, and also improves the effectiveness of ART programs. Embryo transfer in such programs is recommended to be carried out using the CAT technology (Cumulus-Aided embryo Transfer), which includes embryo cultivation on a layer of cumulus cells and embryo transfer with a certain amount of diluted cumulus cells. Patient G., 38 years old, came to the department with infertility for 15 years and recurrent implantation failure in history. The patient had ART program with autologous co-cultivation of embryos with cumulus cells and a new CAT transfer technology. The patient fell pregnant and gave birth to a healthy child. Autologous cumulus cells can be a source of biologically active substances and improve embryological parameters and implantation rate in ART programs. Embryo co-cultivation with cumulus cells is especially important for patients with recurrent implantation failure. This technique can become an alternative for optimizing human embryos culturing.


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