Nutrição e Fertilidade – Artigo 20
Zinc levels in seminal plasma and their correlation with male infertility: A systematic review and meta-analysis
Zinc is an essential trace mineral for the normal functioning of the male reproductive system. Current studies have investigated the relationship between seminal plasma zinc and male infertility but have shown inconsistent results. Hence, we systematically searched PubMed, EMBASE, Science Direct/ Elsevier, CNKI and the Cochrane Library for studies that examined the relationship between seminal
plasma zinc and male infertility, as well as the effects of zinc supplementation ...
Nutrição e Fertilidade – Artigo 19
Zinc Levels in Seminal Fluid in Infertile Males and its Relation with Serum Free Testosterone
Introduction: The role of zinc is critical to reproduction potential. Seminal zinc is thought to be derived almost exclusively from prostatic secretions. Sperm motility is significantly influenced by zinc. Zinc deficiency has been linked with male sterility and subfertility.
Aim: To assess the influence of seminal plasma zinc on seminogram characteristics and whether endogenous testosterone affects the seminal levels of zinc. Materials and Methods: The semen samples were obtained from 150 male ...
Nutrição e Fertilidade – Artigo 18
The zinc spark is an inorganic signature of human egg activation
Egg activation refers to events required for transition of a gamete into an embryo, including establishment of the polyspermy block, completion of meiosis, entry into mitosis, selective recruitment and degradation of maternal mRNA, and pronuclear development. Here we show that zinc fluxes accompany human egg activation. We monitored calcium and zinc dynamics in individual human eggs using selective fluorophores following activation with calcium-ionomycin, ionomycin, or hPLCζ cRNA microinjection. These egg activation ...
Nutrição e Fertilidade – Artigo 17
The role of vitamin D in reproductive dysfunction in women – a systematic review
Vitamin D is essential for the proper functioning of the human body. There is also evidence of its strong association with fertility problems in women. This review aims to evaluate the relationship between vitamin D and diseases affecting women’s fertility (polycystic ovarian syndrome (PCOS), uterine leiomyomas and endometriosis), and in vitro fertilization (IVF) outcome. A systematic review of the literature was conducted in Scopus and PubMed for relevant English language publications since 1989. ...
Nutrição e Fertilidade – Artigo 16
The influence of ginger (Zingiber officinale) on human sperm quality and DNA fragmentation: A double-blind randomized clinical trial
Background: Although the effectiveness of ginger as an antioxidant agent has been exploited, little human research has been conducted on its activity on male reproductive functions. Objective: This study was designed to investigate the effects of ginger (Zingiber
officinale) on sperm DNA fragmentation (SDF) in infertile men. Materials and Methods: This randomized double-blind, placebo-controlled trial with a 1:1 allocation was performed on 100 inferti...
Nutrição e Fertilidade – Artigo 15
The effects of tomato juice on male infertility
This study aimed to investigate the effects of tomato juice consumption on seminal plasma lycopene levels and sperm parameters in infertile men. Methods and Study Design: Subjects were male infertility patients with poor sperm concentration (<20×106/mL) and/or motility (<50%). Following a fourweek observation period, subjects were randomly assigned among three groups: a tomato juice group, an antioxidant group, and a control group. The subjects in the tomato juice group and the antioxidant group daily consumed one can of tomato ...
Nutrição e Fertilidade – Artigo 14
The Deep Correlation between Energy Metabolism and Reproduction: A View on the Effects of Nutrition for Women Fertility
In female mammals, mechanisms have been developed, throughout evolution, to integrate environmental, nutritional and hormonal cues in order to guarantee reproduction in favorable energetic conditions and to inhibit it in case of food scarcity. This metabolic strategy could be
an advantage in nutritionally poor environments, but nowadays is affecting women’s health. The unlimited availability of nutrients, in association with reduced energy expenditure, leads to ...
Nutrição e Fertilidade – Artigo 12
Synergetic Effects of K, Ca, Cu and Zn in Human Semen in Relation to Parameters Indicative of Spontaneous Hyperactivation of Spermatozoa
We have observed that sperm quality parameters indicative of spermatozoa hyperactivation such are lower “linearity” and “straightness”, and as showed by this research “elongation”, were more pronounced in patients with normal spermiogram compared to the group of men
with reduced sperm motility who were undergoing routine in vitro fertilisation. The research encompassed 97 men diagnosed with normozoospermia (n = 20), asthenozoospermia (n ...
