The will to be a mother at a late age has become a real problem of society for many reasons, first and foremost because of efficient birth control, long studies and second matrimonies. In front of these still young women but quite "old" for maternity, practitioners specialized in medically assisted procreation (MAP) are often helpless, specially because most of the patients think that the MAP will be able to cure the natural decline of fertility. However, MAP's procedures cannot correct the decrease of pregnancies' rates and the increase of spontaneous miscarriages linked with the age. One of the first aims of consulting-physicians should be to give patients proper advice about fertility decline, so that women could run their life, aware of these facts.
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BMC Ecol Evol
January 2025
Leibniz Institute on Aging, Jena, Germany.
Maximizing the life-long reproductive output would lead to the prediction that short-lived and fast aging species would undergo no - if any - reproductive senescence. Turquoise killifish (Nothobranchius furzeri) are naturally short-lived teleosts, and undergo extensive somatic aging, characterized by molecular, cellular, and organ dysfunction following the onset of sexual maturation. Here, we tested whether naturally short-lived and fast aging male turquoise killifish maximize reproduction and display minimal - if any, reproductive senescence.
View Article and Find Full Text PDFNat Rev Urol
January 2025
Discipline of Biological Sciences, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, New South Wales, Australia.
Multiple conditions can cause hypoxia in the testis, including exposure to high altitude, sleep apnoea, testicular torsion and varicocele. Varicocele accounts for up to 44% of instances of primary infertility, but the cumulative contribution of hypoxic conditions to male infertility is undefined. Results of controlled hypobaric hypoxia studies have demonstrated a substantial detrimental effect of short-term and long-term exposures on sperm; however, downstream effects on embryo development and offspring health are less well understood.
View Article and Find Full Text PDFJ Exp Biol
January 2025
School of BioSciences, Bio21 Institute, The University of Melbourne, Parkville, Victoria 3010, Australia.
Aedes aegypti mosquitoes are the principal vectors of dengue and continue to pose a threat to human health, with ongoing urbanization, climate change, and trade all impacting the distribution and abundance of this species. Hot periods are becoming increasingly common and their impacts on insect mortality have been well established, but they may have even greater impacts on insect fertility. In this study, we investigated the impacts of high temperatures on Ae.
View Article and Find Full Text PDFEcotoxicol Environ Saf
January 2025
School of Public Health, Jiangxi Medical College, Nanchang University; Jiangxi Provincial Key Laboratory of Disease Prevention and Public Health, Nanchang University, Nanchang 330006, China; Department of Reproductive Medicine, the 1st affiliated hospital, Jiangxi Medical College, Nanchang University; Jiangxi Key Laboratory of Reproductive Health, Nanchang 330006, China; HuanKui College, Nanchang University, Nanchang 330031, China; Chongqing Research Institute of Nanchang University, Nanchang University, Nanchang 330006, China. Electronic address:
The impact of micro/nano plastics (MPs/NPs) on human health is a significant area of research. Studies on the effects of maternal exposure to microplastics (MPs) on the fertility in offspring have been conducted, but the damage caused by nanoplastics (NPs) remains ambiguous. In this study, pregnant Kunming mice were exposed to 30 mg/kg/day PS-NPs from 0.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
Microplastic pollution seriously affects global agroecosystems, strongly influencing soil processes and crop growth. Microplastics impact could be size-dependent, yet relevant field experiments are scarce. We conducted a field experiment in a soil-maize agroecosystem to assess interactions between microplastic types and sizes.
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