Participation of angiotensin II in chronic kidney diseases including diabetic nephropathy (DN) has been extensively described. Similarly, several studies support a protective role for angiotensin-(1-7). However, other...Participation of angiotensin II in chronic kidney diseases including diabetic nephropathy (DN) has been extensively described. Similarly, several studies support a protective role for angiotensin-(1-7). However, other studies suggest that some of the cellular effects of angiotensin-(1-7) may be deleterious. The objective of this study was to determine the role of exogenous angiotensin-(1-7) on renal hypertrophy development in rats with streptozotocin-induced diabetes. A control group and three groups of rats with streptozotocin-induced diabetes: untreated diabetic rats, diabetic rats treated with captopril, and diabetic rats treated with angiotensin-(1-7), were studied. After two weeks of treatment, the kidneys were removed under anesthesia with pentobarbital. The kidneys were weighed and the renal cortex was separated for analysis of AT<sub>1</sub>R, TGF-β<sub>1</sub>, MASR, and ACE2 expression by western blot. Rats in the three groups with diabetes had hyperglycemia, increased food and water consumption, and higher urinary volume than control rats. Treatment with captopril or angiotensin-(1-7) reversed streptozotocin-induced renal hypertrophy, measured by kidney weight, protein/DNA ratio in renal cortex, glomerular area, or proximal tubular cells area, proteinuria, and creatinine clearance reduction. AT<sub>1</sub>R, TGF-β<sub>1</sub>, and MAS receptor expression in renal cortex of diabetic rats increased significantly as compared to controls (p展开更多
Background: Cardiovascular risk factors (CVRF) are very frequent in pa-tients with chronic kidney disease (CKD) and impose a new environment to which the heart must adapt. Cardiac ultrasound is a non-invasive and easy...Background: Cardiovascular risk factors (CVRF) are very frequent in pa-tients with chronic kidney disease (CKD) and impose a new environment to which the heart must adapt. Cardiac ultrasound is a non-invasive and easy-to-perform examination that allows quantitative and qualitative assessment of the anatomy and function of the heart. The objectives of this study were to describe abnormalities observed on trans-thoracic Doppler-echocar-diography and to investigate the factors associated with them. Materials and Method: This was a monocentric retrospective cross-sectional study conducted in CKD patients hospitalized in a hospital center in Côte d'Ivoire from January 2017 to December 2018. Results: One hundred and four cases were collected with a mean age of 48.87 ± 14.47 years and a sex ratio of 1.7. Patients with end-stage-renal-disease (ESRD) represented 83.7% with 55.8% of cases of chronic glomerulonephritis. Cardiovascular risk factors were 100% anemia, 84.6% inflammatory profile, 77.9% hypertension, 76.9% hypocalcemia and in 67.3% oedema. Cardiac abnormalities were observed in 78.8% of patients. Left ventricular hypertrophy (LVH), accounting for 20.2% of cases, was associated with male gender (OR 0.127 CI 0.025 - 0.643;p = 0.013) and hypertensive nephropathy (OR 0.189 CI 0.056 - 0.637;p = 0.007). History of hypertension (OR 0.297 CI 0.084 - 1.050;p = 0.060) and diabetes (OR 5.315 CI 1.260 - 22.419;p = 0.023), hypertensive nephropathy (OR 0.174 CI 0.052 - 0.585;p = 0.005) and hypocalcemia (OR 6.094 CI 1.723 - 21.559;p = 0.005) are incriminated in the development of left ventricular dilatation (LVD) which accounted for 38.5% of cases. Conclusion: Left ventricular hypertrophy and dilatation are the main echocardiographic abnormalities observed in our population.展开更多
文摘Participation of angiotensin II in chronic kidney diseases including diabetic nephropathy (DN) has been extensively described. Similarly, several studies support a protective role for angiotensin-(1-7). However, other studies suggest that some of the cellular effects of angiotensin-(1-7) may be deleterious. The objective of this study was to determine the role of exogenous angiotensin-(1-7) on renal hypertrophy development in rats with streptozotocin-induced diabetes. A control group and three groups of rats with streptozotocin-induced diabetes: untreated diabetic rats, diabetic rats treated with captopril, and diabetic rats treated with angiotensin-(1-7), were studied. After two weeks of treatment, the kidneys were removed under anesthesia with pentobarbital. The kidneys were weighed and the renal cortex was separated for analysis of AT<sub>1</sub>R, TGF-β<sub>1</sub>, MASR, and ACE2 expression by western blot. Rats in the three groups with diabetes had hyperglycemia, increased food and water consumption, and higher urinary volume than control rats. Treatment with captopril or angiotensin-(1-7) reversed streptozotocin-induced renal hypertrophy, measured by kidney weight, protein/DNA ratio in renal cortex, glomerular area, or proximal tubular cells area, proteinuria, and creatinine clearance reduction. AT<sub>1</sub>R, TGF-β<sub>1</sub>, and MAS receptor expression in renal cortex of diabetic rats increased significantly as compared to controls (p
文摘Background: Cardiovascular risk factors (CVRF) are very frequent in pa-tients with chronic kidney disease (CKD) and impose a new environment to which the heart must adapt. Cardiac ultrasound is a non-invasive and easy-to-perform examination that allows quantitative and qualitative assessment of the anatomy and function of the heart. The objectives of this study were to describe abnormalities observed on trans-thoracic Doppler-echocar-diography and to investigate the factors associated with them. Materials and Method: This was a monocentric retrospective cross-sectional study conducted in CKD patients hospitalized in a hospital center in Côte d'Ivoire from January 2017 to December 2018. Results: One hundred and four cases were collected with a mean age of 48.87 ± 14.47 years and a sex ratio of 1.7. Patients with end-stage-renal-disease (ESRD) represented 83.7% with 55.8% of cases of chronic glomerulonephritis. Cardiovascular risk factors were 100% anemia, 84.6% inflammatory profile, 77.9% hypertension, 76.9% hypocalcemia and in 67.3% oedema. Cardiac abnormalities were observed in 78.8% of patients. Left ventricular hypertrophy (LVH), accounting for 20.2% of cases, was associated with male gender (OR 0.127 CI 0.025 - 0.643;p = 0.013) and hypertensive nephropathy (OR 0.189 CI 0.056 - 0.637;p = 0.007). History of hypertension (OR 0.297 CI 0.084 - 1.050;p = 0.060) and diabetes (OR 5.315 CI 1.260 - 22.419;p = 0.023), hypertensive nephropathy (OR 0.174 CI 0.052 - 0.585;p = 0.005) and hypocalcemia (OR 6.094 CI 1.723 - 21.559;p = 0.005) are incriminated in the development of left ventricular dilatation (LVD) which accounted for 38.5% of cases. Conclusion: Left ventricular hypertrophy and dilatation are the main echocardiographic abnormalities observed in our population.
