Results 31 to 40 of about 221,321 (308)
Male reproductive proteins and reproductive outcomes [PDF]
American Journal of Obstetrics and Gynecology, 2008 Male reproductive proteins (MRPs), associated with sperm and semen, are the moieties responsible for carrying male genes into the next generation. Evolutionary biologists have focused on their capacity to control conception. Immunologists have shown that MRPs cause female genital tract inflammation as preparatory for embryo implantation and ...
Roberta B, Ness, David A, Grainger
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Variation in Male Reproductive Investment and Male Reproductive Success in White Spruce [PDF]
Evolution, 1986 An experimental population composed of ramets of white spruce clones was studied to determine the influence of different levels of clonal male reproductive investment on clonal male reproductive success, where the male reproductive success of different clones in the population was defined as the proportion of the seed crop sired by each clone.
Daniel J, Schoen, Steven C, Stewart
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The somatic cost of reproduction: what determines reproductive effort in prime-aged fallow bucks? [PDF]
, 2003 The somatic costs of reproduction are important for understanding the relationship between sexual selection and life-history evolution, and there are two main hypotheses used to explain the pattern of reproductive effort in ungulates.
Hayden, T J +6 more
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Ghrelin in Female and Male Reproduction [PDF]
International Journal of Peptides, 2010 Ghrelin and one of its functional receptors, GHS-R1a (Growth Hormone Secretagogue Receptor 1a), were firstly studied about 15 years. Ghrelin is a multifunctional peptide hormone that affects several biological functions including food intake, glucose release, cell proliferation… Ghrelin and GHS-R1a are expressed in key cells of both male and female ...
Dupont, Joëlle +4 more
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Environment International, 2022 Background: Humans are widely exposed to chemicals with known or suspected endocrine disrupting effects. Among those are several benzophenones, bisphenols and other phenols commonly used in consumer products.
Hanne Frederiksen +7 more
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, 2022 Females and males of the abundant heteropteran species Pyrrhocoris apterus (L.) mate with the larger of the available partners. The male benefits from copulation with a large female, which is more productive than a small female.
Martinkova, Zdenka +3 more
core +1 more source
A Critical Appraisal on the Role of Varicocele in Male Infertility
Advances in Urology, 2012 Varicocele is a major cause of male infertility, as it may impair spermatogenesis through several distinct physiopathological mechanisms. With the recent advances in biomolecular techniques and the development of novel sperm functional tests, it has been
Ricardo Miyaoka, Sandro C. Esteves
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Frontiers in EndocrinologyBackgroundsVaricocele is a leading cause of male infertility, primarily manifesting as asthenozoospermia. The underlying molecular mechanisms remain unclear, and the potential role of protein lactylation in this condition is unknown.MethodsWe performed a
Heran Cao +8 more
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BMC Complementary Medicine and Therapies, 2020 s Background Qilin pills (QLPs), a classic Traditional Chinese Medicine (TCM) formula for treating male infertility, effectively improve semen quality in clinical trials.
Kaishu Zhang +10 more
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Deciphering Sex-Specific Differentiation of Human Fetal Gonads: Insight From Experimental Models
Frontiers in Cell and Developmental Biology, 2022 Sex-specific gonadal differentiation is initiated by the expression of SRY in male foetuses. This promotes a signalling pathway directing testicular development, while in female foetuses the absence of SRY and expression of pro-ovarian factors promote ...
Malene Lundgaard Riis +3 more
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