What question did this study set out to answer?

The study aims to explore the role of angiotensin II in renal damage progression using hypertensive rat models.

June 1, 1993HypertensionOpen Access

Angiotensin blockade and the progression of renal damage in the spontaneously hypertensive rat.

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Why the study?

Does angiotensin blockade prevent renal damage in 5/6-nephrectomized spontaneously hypertensive rats?

Population

5/6-nephrectomized, 12-week-old male spontaneously hypertensive rats

Comparison

TCV-116, delapril, or hydralazine for 4 weeks vs Vehicle

Design

Preclinical

Follow-up

4 weeks

Authors

KKK. KoharaKagoshima University HMHiroshi MikamiFukushima Medical University NONaoki OkudaNational Cerebral and Cardiovascular Center

Discussion

Member takes

Implication

Does not change clinical practice in hypertension or CKD; extends preclinical evidence for angiotensin II blockade in hypertensive rat renal models.

Key Points

The study aims to explore the role of angiotensin II in renal damage progression using hypertensive rat models.
5/6-nephrectomized, 12-week-old male spontaneously hypertensive rats were divided into treatment groups after a control period.
Rats received angiotensin II receptor antagonist TCV-116, ACE inhibitor delapril, hydralazine, or vehicle for 4 weeks.
Urinary protein, albumin excretion, systolic blood pressure, and histological findings were analyzed weekly.
Vehicle-treated rats had a survival rate of 30%.
TCV-116 and delapril significantly improved survival rates compared to vehicle, but hydralazine did not affect proteinuria or albuminuria.
Histological findings showed 5%, 7%, and 30% glomeruli affected in TCV-116, delapril, and hydralazine groups, respectively.

Structured PICO

Does angiotensin blockade prevent renal damage in 5/6-nephrectomized spontaneously hypertensive rats?

Population

5/6-nephrectomized, 12-week-old male spontaneously hypertensive rats

Intervention

TCV-116 (1 mg/kg per day), delapril (30 mg/kg per day), or hydralazine (15 mg/kg per day) for 4 weeks

Comparator

Vehicle

Outcome

Survival rate, urinary protein and albumin excretions, systolic blood pressure, and histological findings (glomerular sclerosis)surrogate

Angiotensin II plays a dominant role through its type 1 receptor in the pathogenesis of renal deterioration by hypertension, and its blockade protects against glomerular sclerosis.

Cite This Study

Kohara et al. (1993) studied this question.

synapsesocial.com/papers/6a7100b5f44fa9f079dec2b3 https://doi.org/10.1161/01.hyp.21.6.975

Topics

Hypertension management

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Implication

Does not change clinical practice in hypertension or CKD; extends preclinical evidence for angiotensin II blockade in hypertensive rat renal models.