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| Author(s): |
Alexandre Alves da Silva
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Paulo. , gráficos, tabelas. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Medicina (FM/SBD) |
| Defense date: | 2001-04-19 |
| Examining board members: |
Joel Claudio Heimann;
Frida Zaladek Gil;
Nereida Kilza da Costa Lima;
Luiz Fernando Onuchic;
Robson Augusto Souza dos Santos
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| Advisor: | Joel Claudio Heimann |
| Field of knowledge: | Biological Sciences - Physiology |
| Indexed in: | Banco de Dados Bibliográficos da USP-DEDALUS; Biblioteca Digital de Teses e Dissertações - USP |
| Location: | Universidade de São Paulo. Biblioteca Central da Faculdade de Medicina; FMW4./DB8 SP.USP FM-2; S578efei |
| Abstract | |
To study the influence of high salt intake during pregnancy and lactation on body weight, blood pressure, and the function of the renin-angiotensin system in adult rats. METHODS AND RESULTS: Female Wistar rats received a low (0.15 NaCl), normal (1.30), or high (8% diet) salt diet. Mating occurred on the 12th week of age. From weaning, the offspring received normal salt diet. Weekly tail-cuff blood pressure and body weight measurements were performed during pregnancy and in the offspring (body weight since weaning and tail-cuff blood pressure between the 8th and the 12th week of age). Salt sensitivity of the blood pressure was evaluated and plasma renin activity determinations were performed in the 12-week-old offspring. Immunohistochemistry for renal angiotensin II was performed in the adult offspring. Renal mass and the number of glomeruli were determined. Tail-cuff blood pressure was higher in salt overloaded dams than in normal and low salt ones. In the adult offspring from the high salt dams, lower body weight, higher tail-cuff blood pressure, lower salt sensitivity in females, and increased kidney angiotensin II were observed. Plasma renin activity did not change with changes in salt intake in the adult offspring submitted to high salt environment during the perinatal period. In the offspring, renal mass and the number of glomeruli were not influenced by the dams' salt intake. CONCLUSIONS: Salt overload during pregnancy and/or lactation has long-term effects on offspring's body weight and blood pressure. In addition, high salt diet during the perinatal period induced renin-angiotensin system functional disturbances in the offspring. (AU) | |