A5038360279- Sperm and Testicular Function
- Reproductive Biology and Fertility
- Animal Genetics and Reproduction
- Reproductive biology and impacts on aquatic species
- Reproductive Physiology in Livestock
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Ovarian function and disorders
- Bee Products Chemical Analysis
- Effects and risks of endocrine disrupting chemicals
- Proteins in Food Systems
- Toxic Organic Pollutants Impact
- Bat Biology and Ecology Studies
- Per- and polyfluoroalkyl substances research
- RNA Interference and Gene Delivery
- Environmental Toxicology and Ecotoxicology
- Effects of Environmental Stressors on Livestock
- Physiological and biochemical adaptations
- Lipid Membrane Structure and Behavior
- Venomous Animal Envenomation and Studies
- Diet, Metabolism, and Disease
- Plant Reproductive Biology
- Marine Invertebrate Physiology and Ecology
- Hypothalamic control of reproductive hormones
- Rabbits: Nutrition, Reproduction, Health
- Viral gastroenteritis research and epidemiology
Universidad Autónoma Metropolitana
2013-2025
Universidad Nacional Autónoma de México
2007
ABSTRACT Various toxic agents are associated with male infertility, including perfluoroalkyl substances (PFAS), which emerging as significant contributors due to their physico‐chemical properties that exhibit a propensity for bioaccumulation and potentially pose reproductive risks. The aim of this study was analyse the effects perfluorooctane sulphonate (PFOS) perfluorooctanoic acid (PFOA) on boar spermatozoa during capacitation through focus agglutinate formation. A second objective assess...
The aoudad (Ammotragus lervia) is a wild ruminant considered the living ancestor of domestic sheep and goats. original distribution aoudads includes several countries in North Africa, but it has been introduced, for trophy-hunting purposes, into other (USA, Mexico Spain). species was declared vulnerable 2012 IUCN's Red List also included CITES II Appendix. Surprisingly, little known about its conservation status or reproductive biology natural populations. There are some reports application...
The objective of this study was to evaluate uterine activity at farrowing in sows with different gestation lengths (GL), and its effect on the metabolic profile, blood gases daily weight gain neonate piglets. experiment covered a period 25 weeks involved 200 Yorkshire-Landrace sows. animals were assigned four groups 50 each distributed according GL, as follows: GL1: 107–109 days; GL2: 110–113 GL3: 114–116 GL4: 117–119 days. productive indicators recorded, survival outcomes neonatal pigs....
Perfluorooctane sulfonate (PFOS) and perfluorohexane (PFHxS) are toxic bioaccumulative, included in the Stockholm Convention's list as persistent organic pollutants. Due to their toxicity, worldwide distribution, lack of information spermatozoa physiology during pre-fertilization processes, present study seeks analyze effects possible alterations caused by presence these compounds boar sperm vitro capacitation. The capacitation was performed supplemented TALP-Hepes media mean lethal...
Artificial insemination (AI) has been used for avian reproduction due to the discovery of cryoprotectants extending its usefulness both in production domestic fowl and conservation wild species. The goal this study was assess effect on pooled semen individual ejaculate cryopreservation with dimethyl sulfoxide (DMSO) polyvinylpyrrolidone (PVP). Twenty ejaculates twenty samples roosters, pheasants hawks were frozen media containing DMSO or PVP. PVP are equally effective semen. Even is a good...
Biochemical surface modifications occur during the capacitation and acrosome reaction of human sperm among those, variations in expression carbohydrates moieties. A sequential study was performed with electronic microscopy flow cytometry techniques, where binding 4 lectins assessed on normal samples vitro induction calcium ionophore A-23187. Triticum vulgaris agglutinin (WGA) shown to bind strongly whole before reaction, lesser amounts after incubation ionophore. Arachis hypogea (PNA) mostly...
Atrazine is a herbicide of the chloro-s-triazine family. It inhibits photosynthesis in plants and an endocrine disruptor, but its effects on human health are controversial. Fenoxaprop-ethyl, aryloxy phenoxyalkanoic acid herbicide, biosynthesis fatty acids provokes depolarization membranes. The aim this study to evaluate vitro both herbicides capacitation, spontaneous acrosome reaction (SAR) progesterone-induced (PIAR) boar sperm. Sperm capacitation done TALP-HEPES media for 4 hours....
Summary Macrozoospermia is characterized by a high proportion of abnormal spermatozoa with enlarged heads. So far, it has been associated mutations only in the Aurora Kinase C gene ( AURKC ) some cases. Although many publications have reported failure to conceive couples macrozoospermia, few others described successful pregnancies, thus raising questions as whether ICSI and genetic screening should be recommended all patients macrozoospermia. First, we report on two monozygotic twins...
Studies suggest that carbohydrates are important in different stages of fertilization. Plasma membrane changes accompanying vitro capacitation and acrosome reaction (AR), such as removal or appearance specific glycoproteins, have been studied using lectins bind specifically to carbohydrate residues. In specialized artificial insemination farms semen production centers, identification boars with decreased fertilization ability (subfertility) is a newborn necessity. This investigation...
Abstract Actin cytoskeleton remodeling is a critical process for the acquisition of fertilizing capacity by spermatozoa during capacitation. However, molecular mechanism that regulates this has not been fully elucidated. In somatic cells, Ras‐related C3 botulinum toxin substrate 1 protein (Rac1) promotes polymerization actin participating in modeling two structures: lamellipodia and adhesion complexes linked with plasma membrane. Rac1 expressed mammalian spermatozoa; however, role sperm...
Preservation of porcine semen in long-term extenders at 15-18°C for more than 5 days results decreased farrowing rates and reduced litter size after artificial insemination, despite the high progressive motility sperm. To improve this preservation system it is necessary to understand sperm physiology under storage conditions. The purpose study was determine effect storing diluted (during 0, 2, 4, 6, 8 days) on membranes status ability respond vitro capacitation treatment. Ten samples from...
Carbohydrate residues on membrane proteins from sperm are important in gamete interaction. In recent years, Arylsulfatase A (AS-A) has been acquiring an role the various putative interaction responsibles sperm. The aim of this study was to determine if capacitated boar Arylsulfatase-A (AS-A), contains D-mannose, N-acetylglucosamine and/or sialic acid by its purification using affinity chromatography with Concanavalia ensiformis Agglutinin(Con-A) or Wheat Germ Agglutinin (WGA) as ligands....
Abstract The bat Corynorhinus mexicanus provides an interesting experimental model for the study of epididymal sperm maturation because after spermatogenesis and regression testes, this stores in cauda several months. Earlier research conducted by our group suggested that species must be completed caudal region epididymis. One major signal transduction events during is tyrosine phosphorylation proteins. aim present was to comparatively evaluate spermatozoa obtained from caput, corpus...
The main purpose of sperm evaluation is to predict its fertilizing ability. However, basic test results show a low correlation with this study was determine whether there an association between acrosome reaction (AR) and the incidence subfertility normal boar. production records 22 farms were analyzed identify boars fertility and/or prolificity, classified as subfertile. Twenty-two subfertile boar semen samples compared 51 fertile boars. Sperm capacitated during 4 h at 39°C, viability...
Summary In vitro fertilization (IVF) can be used to assess the capacity of sperm. Heterologous IVF may useful when assessing that wild animals as it is often difficult obtain adequate numbers naturally corresponding oocytes. The aim present study was frozen–thawed ibex epididymal spermatozoa via heterologous involving oocytes prepubertal domestic goats. effect on and embryo development adding oestrous sheep serum (ESS) medium also examined. Cumulus–oocyte complexes (COCs) were matured in...