Iodine nutrition and thyroid function assessment in childbearing age women from Queretaro, Mexico.

Objective: To assess iodine nutrition and thyroid function in Mexican childbearing age women.

Methods: 101 childbearing age women (21.7 ± 3.

[Pepsinogen and gastrin in the noninvasive diagnosis of gastric atrophy. A case-control study in Peruvian population].

Introduction: Detection of gastric atrophy could be used for early diagnosis of gastric cancer in Perú. It was determined the pepsinogens I and II (PGI, PGII) and Gastrin-17 (G17) serum levels, and the PGI/PGII ratio as a non-invasive diagnostic test for gastric atrophy in Peruvian patiens.

Methods: Dyspeptic adults undergoing endoscopy and gastric biopsies were studied.

Assessment of vitamin A status with the relative-dose-response test in Peruvian children recovering from pneumonia.

Background: The relative-dose-response (RDR) test is used to identify subjects with marginal liver vitamin A stores, but its use has not been evaluated during episodes of infection.

Objective: The objective was to assess, with the RDR test, the vitamin A status of children recovering from pneumonia.

Design: As part of a double-blind, placebo-controlled clinical trial of high-dose vitamin A supplements among children hospitalized with pneumonia in Lima, Peru, we examined the association of treatment group, nutritional status, severity of disease, and induction of the acute phase response [on the basis of serum C-reactive protein (CRP)] on serum retinol and the RDR test.