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Published on: June 14, 2016
Subclinical nephrosclerosis is linked to left ventricular hypertrophy independent of classical atherogenic factors
Naoki Haruyama1, Akihiro Tsuchimoto1, Kosuke Masutani1
1Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Insights
Subclinical kidney damage, indicated by global glomerulosclerosis (GGS), is linked to left ventricular hypertrophy (LVH) even in individuals with normal kidney function. Higher GGS levels significantly increase the risk of developing LVH.
Area of Science:
- Cardiology
- Nephrology
- Renal Function
Background:
- Cardio-renal interactions are increasingly recognized as significant.
- Mild renal dysfunction is linked to left ventricular hypertrophy (LVH).
- The relationship between LVH and subclinical renal damage remains unclear.
Purpose of the Study:
- To investigate the association between subclinical renal damage and LVH.
- To assess the correlation between global glomerulosclerosis (%GGS) and LVH in living kidney donors with normal renal function.
Main Methods:
- Retrospective analysis of 238 living kidney donor pretransplant biopsies.
- Categorization of donors into tertiles based on %GGS.
- Measurement of left ventricular mass index (LVMI) by echocardiography.
- Logistic regression analysis to evaluate the correlation between %GGS and LVH.
Main Results:
- LVMI and the prevalence of left ventricular remodeling and LVH increased significantly with higher tertiles of %GGS.
- High %GGS tertiles were associated with a sevenfold greater risk of LVH compared to low tertiles.
- This association remained significant after adjusting for age, sex, blood pressure, GFR, and other atherogenic factors.
Conclusions:
- An association exists between global glomerulosclerosis and left ventricular hypertrophy in individuals with normal renal function.
- Subclinical renal damage, indicated by GGS, is a significant risk factor for LVH.
- These findings highlight the importance of considering renal health in cardiovascular risk assessment.
Abstract:
Recently, cardio-renal interactions have been considered to be important and it has been demonstrated that mild renal dysfunction is associated with left ventricular hypertrophy (LVH). However, the correlation between LVH and subclinical renal damage is unclear. We investigated this association by assessing pretransplant biopsies from living kidney donors with normal renal function. We retrospectively categorized 238 living kidney donors into tertiles according to the percentage of global glomerulosclerosis (%GGS) observed in pretransplant biopsies (low, 0-3.45% (n=80); moderate, 3.46-11.76% (n=78); high, ⩾11.77% (n=80)) to analyze trends in their left ventricular mass index (LVMI) measured by echocardiography and baseline factors. LVH was defined as LVMI >110 g m(-2) in female and >125 g m(-2) in male subjects. We used a logistic regression model to evaluate any correlations between %GGS and LVH. LVMI increased significantly with increasing tertiles of %GGS, as did the prevalence of left ventricular remodeling and LVH. According to multivariate logistic regression analysis, subjects with high %GGS tertiles had a sevenfold greater risk of LVH than did those with low tertiles, even after adjusting for age, sex, systolic blood pressure, history of diabetes mellitus, total serum cholesterol and glomerular filtration rate (GFR) measured by a radioisotopic technique. There is an association between GGS and LVH in subjects with normal renal function. This association is significant after adjustment for age, sex, blood pressure, GFR and other atherogenic factors.
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