Association of Sperm Methylation at LINE-1, Four Candidate Genes, and Nicotine/Alcohol Exposure With the Risk of Infertility

In this study, we examined whether smoking and drinking affect sperm quality and the DNA methylation of the repetitive element LINE-1, MEST, P16, H19, and GNAS in sperm. Semen samples were obtained from 143 male residents in a minority-inhabited district of Guizhou province in southwest China. Quantitative DNA methylation analysis of the samples was performed using MassARRAY EpiTYPER assays. Sperm motility was significantly lower in both the nicotine-exposed (P = 0.0064) and the nicotine- and alcohol-exposed (P = 0.0008) groups. Follicle-stimulating hormone (FSH) levels were higher in the nicotine-exposed group (P = 0.0026). The repetitive element LINE-1 was hypermethylated in the three exposed groups, while P16 was hypomethylated in the alcohol and both the alcohol and nicotine exposure groups. Our results also show that alcohol and nicotine exposure altered sperm cell quality, which may be related to the methylation levels of MEST and GNAS. In addition, MEST, GNAS, and the repetitive element LINE1 methylation was significantly associated with the concentration of sperm as well as FSH and luteinizing hormone levels.
Source: Frontiers in Genetics - Category: Genetics & Stem Cells Source Type: research

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Shalaka S. Ramgir and V. G. Abilash*
Source: Indian Journal of Pharmaceutical Sciences - Category: Drugs & Pharmacology Source Type: research
A 44-year-old man was evaluated for recurrent angioedema manifested as more than 10 discrete episodes with swelling of the posterior pharynx and uvula, without urticaria, that would subside spontaneously over 24 hours. These episodes were first noted 2 years ago, were worsened by alcohol, and were not responsive to antihistamines. Medical history was significant for hyperestrogenism, that worsened with testosterone treatment for infertility. His primary family history revealed a father and brother with gynecomastia, a mother with endometrial cancer, and a sister with Lynch syndrome.
Source: Annals of Allergy, Asthma and Immunology - Category: Allergy & Immunology Authors: Source Type: research
CONCLUSIONS: This retrospective cohort study demonstrated that patients who underwent ART were at increased risk of several adverse pregnancy outcomes compared with women who conceived spontaneously. These complications may be attributed in part to the relatively high multiple pregnancy rate after ART. Elective single embryo transfer should be promoted in China to reduce the obstetrical risks of ART pregnancy. Singletons of ART pregnancy exhibited increased maternal and neonatal complications as well, suggesting that underlying infertility or other maternal or parental factors may contribute to the adverse outcomes. P...
Source: Chinese Medical Journal - Category: General Medicine Authors: Tags: Chin Med J (Engl) Source Type: research
Authors: Hoseinpour MJ, Ghanbari A, Azad N, Zare A, Abdi S, Sajadi E, Abbaszadeh HA, Farahani RM, Abdollahifar MA Abstract OBJECTIVE: Polycystic ovary syndrome (PCOS) is a common and multifactorial disease associated with female factor infertility. Ulmus minor bark (UMB) is one of the medicinal plants used in Persian folklore as a fertility enhancer. In the current study, we aimed to elucidate the effect of UMB hydro-alcoholic extract on histological parameters and testosterone condition in an experimental model of PCOS rats. METHODS: Thirty female rats were randomly divided into five groups: (1) control, (2) v...
Source: Endocrine Regulations - Category: Endocrinology Tags: Endocr Regul Source Type: research
To assess the effect of cigarette smoking, alcohol consumption, and drug use on semen parameters, number of oocytes retrieved, fertilization rate, embryo development, and pregnancy outcomes in infertile couples undergoing IVF.
Source: Fertility and Sterility - Category: Reproduction Medicine Authors: Tags: Poster session Source Type: research
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Source: Human Reproduction - Category: Reproduction Medicine Source Type: research
Abstract It is a challenge to expand the metabolome coverage of liquid chromatography (LC)-electrospray ionization (ESI) mass spectrometry (MS) based untargeted metabolomics analysis. The limited coverage is attributed to the weak signal of hydroxyl and carboxyl groups in ESI-MS and the limited capacity of LC separation for metabolites with a wide range of polarities. Here a new sample preparation procedure is proposed to solve these problems. Mixed-mode (reversed-phase and anion-exchange) solid-phase extraction sorbents were used to separate metabolites into hydrophilic amine, hydrophobic amine/alcohol, and organ...
Source: Analytical and Bioanalytical Chemistry - Category: Chemistry Authors: Tags: Anal Bioanal Chem Source Type: research
Besides ageing, a number of non-modifiable lifestyle-related factors, as smoking, elevated consumption of caffeine and alcohol, stress, agonist sports, chronic exposure to environmental pollutants, and other nutritional habits exert a negative impact on women’s fertility. In particular, metabolic disorders including diabetes, obesity, and hyperlipidemia commonly associated to hypercaloric diets are suspected to promote infertility in women either by direct damage to oocyte health and differentiation, or by indirect interference with the pituitary-hypothalamic axis, resulting in dysfunctional oogenesis. Obese women sh...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
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Source: International Journal of Pharmaceutics - Category: Drugs & Pharmacology Source Type: research
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Source: OnMedica Latest News - Category: UK Health Source Type: news
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