Association between family structure, maternal education level, and maternal employment with sedentary lifestyle in primary school-age children.

Objective: To determine the association between family structure, maternal education level, and maternal employment with sedentary lifestyle in primary school-age children.

Method: Data were obtained from 897 children aged 6 to 12 years. A questionnaire was used to collect information.

Amebiasis in the epidemiologic transition in Mexico: its morbidity and mortality trends in the Mexican Institute of Social Security.

Amebiasis is one of the most common parasite-related diseases and one of those with the greatest impact on health. At the Instituto Mexicano del Seguro Social (Mexican Institute of Social Security-IMSS) approximately half a million cases per year are currently treated. Of these, more than 2500 correspond to the form which invades the liver.

[Improvement in the quality of medical care].

Unlabelled: The object of this research was investigating the existence of programs, as well as the patient's and healthy worker's opinions, concerning the quality of Medical Attention in the representative medical institutions in Mexico City (Distrito Federal). Eighteen directors of medical institutions were interviewed; as well as fifty university graduates, one hundred out patients from health centers and three hundred patients treated at general hospitals. A poll was applied to two hundred and fifty physicians and two hundred and fifty nurses from health centers and general hospitals.

[Localization of Entamoeba histolytica antigens using IgA].

The presence of IgA anti-Entamoeba histolytica antibodies has been demonstrates in intestinal secretions and serum of human amebiasis. We investigated which are the cellular components of trophozoites that react with IgA anti-ameba antibodies from immune serum, colostrum and human milk. The cellular localization of such antigens was accomplished by an indirect immunoperoxidase technique using anti-human IgA (alpha chain specific) labeled with peroxidase, both for light and transmission electron microscopy.

[Amebiasis. Medical treatment. Is there anything better than metronidazole?].

Since 1961, when Cosar pointed out for the first time that metronidazol was a useful pharmacological agent against E. histolytica, several authors have demonstrated its effectiveness against invasive amebiasis in its colonic or extraintestinal variety. The obtained results with metronidazol were so far better compared with the rest of the known amebecides, that in 1974, Elsdon Dew stated that a new era in the medical treatment of the amebiasis had started with the forthcoming use of the agent.

[Amebiasis. Has its clinical expression changed?].

In Mexico, like in other countries, there is an special interest for amebiasis because it represents a Public health problem; there are about 5 million people that in some time of their lives had tissue invasion by this parasite. 1-2% of mexicanas have intestinal amebiasis and probably there are 850,000 to 1,700,000 carriers of entamoeba cysts. 6% of the general population have circulating antiameba antibodies.

[Ultramicroscopic study of the invasion of the mucosa of the colon by Entamoeba histolytica in axenic cultures].

Animal models have been utilized to study experimentally produced intestinal amebiasis. The guinea pig has been the animal of choice to study the mechanisms by which trophozoites of E. histolytica produce colonic lesions.