Does cigarette smoking really have a clinical effect on folliculogenesis and oocyte maturation?

In conclusion, although cigarette smoking does not seem to affect oocyte development, it had an effect on cytoplasmic anomalies and therefore may lower pregnancy chance. Therefore, it is crucial to give proper counselling to patients who are trying to become pregnant both naturally and by in vitro fertilization. PMID: 32338250 [PubMed - as supplied by publisher]
Source: Zygote - Category: Reproduction Medicine Authors: Tags: Zygote Source Type: research

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This study aimed to explore the association of serum 25 ‐hydroxyvitamin D (25OHD) levels and semen parameters, as well as ART outcomes for men from infertile couples.Materials and MethodsThis study recruited 1,308 men from infertile couples who attended the Reproductive Medicine Center of Peking University Third Hospital for first time from February to August 2019(NCT03804294). Reproductive hormones levels, semen parameters and clinical outcomes of ART were compared between vitamin D deficient group (serum 25OHD ≤10 ng/mL), insufficient group (serum 25OHD 10‐20 ng/mL) and sufficient group (serum 25OHD≥20 ng/mL).R...
Source: Andrology - Category: Urology & Nephrology Authors: Tags: ORIGINAL ARTICLE Source Type: research
Abstract BACKGROUND: Parabens, which are used as a preservative in foods and personal care products, are detected in nearly 100% of human urine samples. Exposure to parabens is associated with DNA damage, male infertility, and endocrine disruption in adults, but the effects of prenatal exposure are unclear. In part, this is due to inadequate assessment of exposure in maternal urine, which may only reflect maternal rather than fetal exposure. To address this gap, we examined the association of prenatal methylparaben measured in meconium with preterm birth, gestational age, birthweight, maternal thyroid hormones, an...
Source: Environment International - Category: Environmental Health Authors: Tags: Environ Int 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
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
AbstractSTUDY QUESTIONWhat is the association of female and male partner marijuana smoking with infertility treatment outcomes with ART?SUMMARY ANSWERWomen who were marijuana smokers at enrollment had a significantly higher adjusted probability of pregnancy loss during infertility treatment with ART whereas, unexpectedly, there was a suggestion of more favorable treatment outcomes in couples where the man was a marijuana smoker at enrollment.WHAT IS KNOWN ALREADYData on the relation of female and male partner marijuana use with outcomes of infertility treatment is scarce despite increased use and legalization worldwide.STU...
Source: Human Reproduction - Category: Reproduction Medicine Source Type: research
Conclusion The periconceptional environment and lifestyle factors modify sperm epigenome. This alteration might be maintained in the zygote and throughout development, thereby leading to the inheritance of newly acquired pathologies. The role of sperm miRNA, not only as innovative markers of fertility issues but also as vectors involved in the inheritance of paternal diseases, appears to be crucial. Overweight and obesity seem to alter sperm miRNA profile, thereby leading to transmission of different miRNA profiles in zygote, with consequences on embryo development. In long term, metabolic disorders have been described in...
Source: Frontiers in Genetics - Category: Genetics & Stem Cells Source Type: research
In this study, a link between mitochondrial changes and infant temperament has also been suggested. Maternal psychosocial stress and lifetime trauma have been associated with decreased mitochondrial DNA copy number in the placenta (115, 116).IndividualityChronic stress links changes in the epigenetic landscape with health conditions (117). Different cell types are characterized by distinct patterns of gene expression due to developmental, environmental, physiological, and pathological reasons (117). Epigenetic mechanisms affect gene function in a dynamic way as a result of different environmental exposures during fetal dev...
Source: Frontiers in Psychiatry - Category: Psychiatry Source Type: research
This study evaluated the association between BRCA mutation status and serum anti-Müllerian hormone (AMH) level in young, reproductive-aged patients with breast cancer. Materials and Methods: Patients ≤ 40 years of age with breast cancer and who had known BRCA status and baseline serum AMH level at Samsung Medical Center, Seoul, Korea, were considered for inclusion. A total of 52 BRCA mutation carriers (27 BRCA1 and 25 BRCA2) and 264 non-carriers were selected for analyses. The serum level of AMH was compared according to presence of a BRCA mutation, and linear and logistic regression analyses were performed to eva...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
ConclusionsPerinatal and early-life risk factors, and specifically indicators of brain trauma, exposure to toxic agents and immune system maturation, might be involved in the pathogenesis of childhood brain tumors. Larger studies should aim to replicate our findings and examine associations with tumor subtypes.
Source: Cancer Epidemiology - Category: Cancer & Oncology Source Type: research
Publication date: Available online 17 January 2019Source: Academic RadiologyAuthor(s): Juanfang Liu, Liping Han, Xinwei HanRationale and ObjectivesTo report the effect of pregnancy on patients who have undergone pelvic vein embolization with pelvic congestion syndrome, which was suspected to be the only cause of infertility.Material and MethodsData from a total of 12 women (mean age: 36.5 ± 4.3 years, range: 29–45 years) were collected between May 2013 and June 2016. Transvenous embolization with fibre platinum coils combined with anhydrous alcohol was performed in unilateral or bilateral ovarian veins after t...
Source: Academic Radiology - Category: Radiology Source Type: research
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