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Biomedical subjects

F E Viteri

Publications and source records attributed to F E Viteri.

83 records · Page 5Linked to original sources
PubMed1972

The quality of new sources of protein and their suitability for weanlings and young children.

A number of formulated protein-rich mixtures have been developed with the objective of preventing protein deficiency in vulnerable population groups, particularly in weanlings and children of pre-school in the developing countries. This paper describes an investigation, by the nitrogen balance index method, of the protein quality of several such mixtures. The results indicate that most of the mixtures are suitable protein sources for children of pre-school age.

Central America↗
PubMedDate not supplied

Social support and arterial pressure in a central Mexican community.

Research on the relationship of social support and arterial blood pressure was conducted in a town in central Mexico. A culturally appropriate measure of social support was developed assessing perceived support from relatives, friends, neighbors, and compadres (ritual kin). The effects of perceived support from these four sources were compared to the effects of the amount of reported social contacts. For males, more support from all four sources was related to lower arterial pressure, whereas amount of social contact was related to higher diastolic blood pressure; support from compadres had the largest inverse correlation with blood pressure. For females the pattern of correlations was dependent on age: support from relatives and friends was related to higher blood pressure for younger females, whereas support from relatives was related to lower blood pressure for older females. This pattern of relationships is consistent with the place of women in the social structure of this Mexican community, and these results point to the need to conceptualize and measure social support in culturally appropriate ways.

Adult↗
PubMedDate not supplied

Blood pressure, ethnicity, and psychosocial resources.

Research on psychosocial factors and cardiovascular disease has shown that psychosocial resources (including social supports and coping styles) help to protect individuals from the risk associated with psychosocial stressors. Some evidence indicates that this protective effect may extend to standard risk factors as well. This latter hypothesis was examined in greater detail in a study conducted in Brazil, in which it was found that psychosocial resources modified black-white differences in blood pressure. Highest mean blood pressures were observed among mixed race and black Brazilians who had low psychosocial resources; Afro-Brazilians with high psychosocial resources had lower blood pressures than white Brazilians. Implications of these results for the mechanisms linking ethnicity, psychosocial factors, and blood pressure are discussed.

Adaptation, Psychological↗
PubMedDate not supplied

Lactose intolerance in protein-energy malnutrition: a clinical case study and family study using a hydrogen (H2) breath-analysis test for carbohydrate malabsorption.

A non-invasive, interval sampling hydrogen (H2) breath-analysis test for carbohydrate malabsorption was used in a 3 year-old Guatemalan child with severe protein-energy malnutrition (kwashiorkor) and in this relatives: mother half-sister and step-father to examine genetic and nutritional factors in lactose intolerance in young children. Clinical lactose intolerance was present in the patient on admission, and lactose malabsorption, even of 0.88 g per kg of weight, persisted after complete nutritional recobly due to gastric retention of the substrate. Malabsorption of a physiological dose of lactose, 12.5 g, was detected in the mother and step-father while their daughter exhibited normal growth and development and normal lactose absorption at 8 months of age. The H2 breath test proved to be a sensitive, well-tolerated procedure for both adults and young children. Pitfalls, such as delayed gastric emptying, absence of normal bacterial flora, prior use of antibiotics, must be considered in interpreting H2 breath test results in children.

Adult↗
PubMedDate not supplied

[Stable isotopes in biomedical diagnosis and research].

Atoms that are chemically identical but that differed slightly in weight due to the number of nuclear neutrons are called isotopes stables, meaning that do not degrade spontaneously. Mass spectrometry is the analytical technique to evaluate the enrichment on these isotopes with a variety of applications in the clinical diagnosis of pathological processes and the quantitation of metabolic events such as bacterial growth (Helicobacter pylorii), Phenylketonuria, lactose intolerance, liver and pancreatic function, body composition and energy expenditure, cholesterogenesis, glucose utilization, etc. in an easy, non-invasive and specific way as mass spectrometers develop.

Clinical Laboratory Techniques↗