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La ripetizione della tripletta GGC del recettore degli androgeni potrebbe essere più coinvolta della tripletta CAG nella regolazione del profilo metabolico negli uomini.
No full textCould SARS-CoV-2 infection affect male fertility and sexuality?
Full text linkSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the cause of coronavirus infectious disease (COVID-19) and has rapidly spread worldwide, causing serious problems to the healthcare systems of many countries and hundreds of thousand deaths. In this review we discuss data from the literature to understand whether the various districts of the male reproductive system may represent another vulnerable target for SARS-CoV-2. Studies were searched from electronic databases such as Google Scholar, PubMed, Scopus, and COVID-19 specific databases such as LitCovid, until July 31, 2021. It appears that SARS-CoV-2 virus infection not only causes damage to the respiratory system, but could have a serious impact on the reproductive system of male patients modulating many physiological processes. Like some other infections, SARS-CoV-2 also leads to a worsening of semen quality and an increase in oxidative stress (OS) levels. However, due to the limited number of studies, it is unclear whether this deterioration in semen parameters is temporary or lasts over time. It is certainly important that patients' reproductive function is monitored after coronavirus infection to avoid problems in reproductive health in the future
Influence of androgen receptor CAG polymorphism on sexual function recovery after testosterone therapy in late-onset hypogonadism.
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Androgen receptor GGC repeat might be more involved than CAG repeat in the regulation of the metabolic profile in men.
No full textDiabetes mellitus and late onset hypogonadism: the role of Glu298Asp endothelial nitric oxide synthase polymorphism.
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Have androgen receptor gene CAG and GGC repeat polymorphisms an effect on sperm motility in infertile men?
No full textAndrogens and a normal androgen receptor (AR) are required for normal spermatogenesis. We investigated polyglutamine (CAG) and a polyglycine (GGC) tract in Italian men with defective spermatogenesis. We studied a group of 40 infertile men with spermatogenesis failure without Y-chromosome microdeletions compared with 60 normozoospermic ones. The distributions of both polymorphisms, within the normal range of Caucasian populations, were similar among infertile men and controls. Nonetheless, we observed that the frequency comparison of each CAG allele showed a statistical difference in the allele CAG 22; GGC 17 was the more predominant allele in infertile men than in controls. Moreover, to investigate the hypothesis that semen characteristics are perturbed by androgen receptor allele variants, we tried to detect a link between triplets and sperm motility in all subjects (cases plus controls). Subjects were subdivided into three groups, based on calculated allele frequencies. A significantly decreased motility, related to a longer CAG and GGC tracts, and marked differences between the groups exist for both polymorphisms. Our data highlight a probable relationship between the allele CAG 22/GGC 17 and a defective spermatogenesis in infertile men, suggesting that these polymorphisms might have an important effect on AR function
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