| Autor: |
Mellina Neyla de Lima, Albuquerque, Alcides da Silva, Diniz, Ilma Kruze Grande de, Arruda |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
Archivos latinoamericanos de nutricion. 59(4) |
| ISSN: |
0004-0622 |
| Popis: |
The objective of this study was to evaluate the retinolemia and consumption of vitamin A rich foods and their association with blood pressure levels in the elderly. This is a cross-sectional study, with a systematic sample of 297 elderly subjects enrolled at the Family Health Program of Camaragibe, Pernambuco, between November/December of 2003. Vitamin A status was assessed by retinolemia (HPLC) and by the consumption of vitamin A rich foods (food frequency questionnaire). Blood pressure levels were classified according to the V Brazilian Guidelines on Hypertension. A prevalence of inadequate retinolemia (1.05 micromol/L) of 26.3% (CI95% 21.4-31.9) was found. The frequency of preformed vitamin A intake (3x/week) was lower (p = 0.000) than the provitamin A intake. The prevalence of systemic arterial hypertension (SAH) was 58.6% (CI95% 52.7-64.3). Isolated systolic hypertension was more prevalent among subjects. There was no correlation between retinolemia and vitamin A rich-food intake (p0.05). In addition, there was no association between blood pressure levels and vitamin A rich-food intake (p0.05). However, retinolemia in the elderly classified in stage 1 of SAH was higher (p = 0.02) than in the elderly with great/normal blood pressure. The findings suggest a vulnerability of these subjects to hypovitaminosis A and SAH. Nevertheless, the role of vitamin A in the endothelial function modulation and inflammatory responses associated to SAH should be addressed in future studies. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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