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Muscular dystrophies are a heterogeneous group of hereditary diseases characterized by loss of muscle and weakness of non neurogenic origin. They are caused by mutations in one or more genes involved in the formation of muscle cells. The discovery of several proteins in the muscle began with the discovery of dystrophin, 130 years after the clinical(More)
The classical roles of B cells include the production of antibodies and cytokines and the generation of immunological memory, these being key factors in the adaptive immune response. However, their role in innate immunity is currently being recognised. Traditionally, B cells have been considered non-phagocytic cells; therefore, the uptake of bacteria by B(More)
We evaluated the nature and the extent of the damage to the respiratory epithelium of guinea pigs after a 4-month exposure to the mixture of air pollutants in southwest Mexico City. Guinea pigs were placed outdoors on the roof of our facility, 8 hours daily, from February to May 1995. At the same time, control guinea pigs were kept indoors breathing(More)
Physicians at the National Institute of Perinatology in Mexico City, Mexico used a Carl-Zeiss EM 10C electron microscope to examine genital secretion samples from 10 pregnant women (15-38 weeks' gestation) who had been diagnosed with Mobiluncus species and Gardnerella vaginalis infections to illustrate the form and structure of bacteria responsible for(More)
Perinatal vertical transmission has increased in all the world; it is considered that at the present time there are about one million of children with HIV. Variation goes from 12 to 40%, at different countries. During the last years antiretroviral drugs as AZT, ddI and others have been used to diminish the virus passage via transplacentary. Eighteen(More)
The objective of this paper was to evaluate, ultrastructurally the placental site, placenta, umbilical cord, embryonal tissues, and semen from 10 patients (5 females and 5 males), seropositive for the Human Immunodeficiency Virus. The tissue samples were processed by the routine techniques for electronic microscopy, and were examined with a Zeiss EM-10C(More)
BACKGROUND We undertook this study to compare the ultrastructural analysis of capsules of normal lenses (phacorefractive procedures) and those of other types of cataracts also such as senile cataracts, with trans-surgical staining. METHODS Capsule samples were obtained by circular continuous capsulorhexis during phacoemulsification procedures. All samples(More)
The possible vascular hazard associated with carbohydrate intolerance produced by long-term use of oral contraceptives was investigated by examining the capillary basement membrane thickness in quadriceps muscle biopsies, a highly sensitive and reliable indicator of diabetic microangiopathy. The average basement thickness of 18 long-term (4-9 years)(More)
Gene therapy is based on the use of DNA as a therapeutic material as an alternative therapeutic tool for treatment of human diseases. All proteins are codified into the DNA and several diseases result from the absence or aberrant expression of one or related genes, absence of expression of functional proteins, and alterations for regulation process in(More)