In vitro maturation and fertilization (IVM, IVF) programs in pigs have some problems, these are low rates of cytoplasmic maturation and high percentages of polyspermy. To the present time, it is not clear if these difficulties are related to culture conditions during maturation. It has been shown that porcine follicular...
Los compuestos perfluorados como el ácido perfluorodecanoico (PFDA) se han utilizado en la industria desde los años 50, afectando la salud de personas ocupacionalmente expuestas; su acumulación en el organismo y persistencia en el ambiente han generado preocupación. Actualmente incrementó significativamente el interés en estudiar los daños en la salud...
Introduction: the immune diseases (ID) are pathologies where the immune system homeostasis is deregulated, leading to clinical manifestations as hyperresponsiveness to allergen, chronic inflammation, even autoimmune response. Example of these are asthma, systemic lupus erythematosus (SLE) and juvenile rheumatoid arthritis (JRA). For its etiology, they are multifactorial diseases in which...
A contribution to the knowledge of denitrifying process in presence of toluene is presented. The effect of an easily degradable substrate such as acetate on toluene mineralization under denitrifying conditions was evaluated by means of consumption efficiencies, yield products and substrate specific consumption rates. Molecular techniques such as denaturing gradient...
Vibrio vulnificus is a halophylic bacterium widely distributed in coastal waters of seas, estuaries and other water bodies. Oysters, fish, sediments, water and plancton are reservoirs for V. Vulnificus, and it is thus important to assess the effect of salinity, temperature and seasonal changes on the viability of V. Vulnificus,...
Entomopathogenic fungi produce various enzymes during the process of pathogenesis, including proteases and chitinases, as well as allowing hydrophobins its adherence to the host, which has been reported that extrinsic factors affecting its production (St. Leger et al, 1986 y 1998 ). However, there are not studies about their production...
Malnutrition is distributed widely throughout the World and is a particular problem in developing countries. Actually, recent studies estimate that 10 million of children younger than 5 years of age die in developing countries; more than 50% of deaths in children are attributed to conditions preventable: the malnutrition contributes to...
The surface of the spermatozoa is coated with glycoproteins, the redistribution of which during in vitro capacitation plays a vital role in the subsequent fertilization process. Lipid rafts are membrane microdomains involved in signal transduction through receptors and include or recruit specific types of proteins and glycoproteins. Few studies have...
La acumulación de daño por estrés oxidante sobre las biomoléculas como el ADN, es conocido como un factor que induce alteraciones en los mecanismos y estructura de la célula que podrían contribuir con el proceso del envejecimiento. El sistema de reparación de malos apareamientos tipo MMR corrige bases apareadas de...
In Mexico, the maternal-fetal transmission of Trypanosoma cruzi has been little studied, the first case was published in 1998 and to date there are no more official reports. We determinate the T. cruzi infection prevalence in 1448 pregnant women from Oaxaca state, Jalisco state and Mexico City, as well as...