Low-Intensity physical activity beneficially alters the ultrastructural renal morphology of spontaneously hypertensive rats
Clinics
;
66(5): 855-863, 2011. ilus, graf
Article
in English
| LILACS
| ID: lil-593852
ABSTRACT
INTRODUCTION AND OBJECTIVE:
Kidney disorders can cause essential hypertension, which can subsequently cause renal disease. High blood pressure is also common among those with chronic kidney disease; moreover, it is a well-known risk factor for a more rapid progression to kidney failure. Because hypertension and kidney function are closely linked, the present study aimed to observe the beneficial effects of low-intensity physical activity on structural and ultrastructural renal morphology and blood pressure in normotensive and spontaneously hypertensive rats.METHOD:
Male Wistar-Kyoto rats and spontaneously hypertensive rats were randomly allocated into four groups sedentary or exercised Wistar-Kyoto and sedentary or exercised spontaneously hypertensive rats. The exercise lasted 20 weeks and consisted of treadmill training for 1 hour/day, 5 days/week.RESULTS:
The exercised, spontaneously hypertensive rats showed a significant blood pressure reduction of 26 percent. The body masses of the Wistar-Kyoto and spontaneously hypertensive strains were significantly different. There were improvements in some of the renal structures of the animals treated with physical activity (i) the interdigitations of the proximal and distal convoluted tubules; (ii) the basal membrane of the proximal and distal convoluted tubules; and (iii) in the basal membrane, slit diaphragm and pedicels of the glomerular filtration barrier. The spontaneously hypertensive rats also showed a decreased expression of connexin-43.CONCLUSION:
Physical exercise could be a therapeutic tool for improving kidney ultrastructure and, consequently, renal function in hypertensive individuals.
Full text:
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Index:
LILACS (Americas)
Main subject:
Physical Conditioning, Animal
/
Blood Pressure
/
Hypertension
/
Kidney Glomerulus
/
Kidney Tubules
Type of study:
Risk factors
Limits:
Animals
Language:
English
Journal:
Clinics
Journal subject:
Medicine
Year:
2011
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Estadual do Rio de Janeiro/BR
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