Key result
Higher waist-to-height ratio correlates moderately with elevated leptin in stable CAD.
Why the study?
Adiposity assessment using waist to height ratio is important in CAD prevention, and leptin is a prognostic predictor of cardiovascular events, but their correlation in CAD patients was not established.
Does waist to height ratio correlate with leptin serum levels in stable CAD patients?
Cross-Sectional (n=37)
No
Does waist to height ratio correlate with leptin serum levels in stable CAD patients?
Effect estimate: Spearman's rho = 0.51
p-value: p=0.001
Waist-to-height ratio has a significant positive correlation with serum leptin levels in stable CAD patients, suggesting it could serve as a simple clinical indicator for this prognostic biomarker.
WHtR-leptin correlation in CAD is hypothesis-generating; prospective studies needed before prognostic use.
Background: Adiposity assessment plays an important role in coronary artery disease (CAD) prevention. One of the adiposity parameter in major CAD management guideline is waist to height ratio (WHtR). Adiposity promotes the pathogenesis of coronary atherosclerosis by involving adipokines released by adipose tissue. Leptin is obesity identic adipokine which is used as prognostic predictor of cardiovascular event. This study aims to analyze correlation between WHtR and leptin serum level. Method: A cross sectional study was performed to 37 stable CAD patients undergone elective coronary angiography in Heart Catheterization Laboratory Dr Hasan Sadikin Hospital, Bandung, West java in July 2014 Results: Mean age of the subjects was 56.7± 9.12 years old with mean age of men (n=32) and women (n=5) were 55.9±9.47 years old and 62±3.54 years old consecutively. There were 30 (81%) subjects classified as obese (WHtR≥0.5) with mean WHtR 0.54±0,06. Median value of leptin serum was 8599.90 pg/ml (780-36929.3 pg/ml). Based on rank-spearman correlation test, a positive moderate correlation was significantly found between WHtR and Leptin serum level (Spearman’s rho = 0.5, p= 0.001). Conclusion: Positive correlation was found between WHtR and leptin serum level. Hence, WHtR might be useful as indicator of leptin serum level which has been used as a prognostic biomarker in CAD patients Abstrak Latar belakang: Penilaian adipositas merupakan bagian dari upaya preventif penyakit jantung koroner (PJK). Salah satu parameter antropometri adipositas yang digunakan pada panduan tatalaksana PJK adalah pengukuran rasio lingkar pinggang/tinggi badan (LP/TB). Adipositas diketahui berperan dalam patomekanisme terbentuknya aterosklerosis koroner melalui pelepasan adipositokin oleh jaringan adiposa. Leptin merupakan adipositokin identik adiposit yang digunakan sebagai biomarka indikator prognostik kejadian kardiovaskular. Penelitian ini bertujuan untuk menganalisa korelasi LP/TB dengan kadar leptin serum. Metode: Studi potong lintang dengan menganalisis antropometri LP/TB dan kadar leptin serum pada 37 pasien PJK yang menjalani angiografi elektif di Laboratorium Kateterisasi Jantung RSUP Dr.Hasan Sadikin, Bandung, Jawa Barat pada bulan Juli 2014. Hasil: Rerata usia subjek adalah 56.7± 9.12 tahun dengan rerata usia pria (n=32) dan wanita (n=5) secara berurutan adalah 55.9±9.47 tahun dan 62±3.54 tahun. Terdapat 30 (81%) subjek tergolong obesitas (nilai LP/TB ≥0,5) dengan rata-rata LP/TB 0.54±0,06. Nilai median leptin serum 8599.90 pg/ml (780-36929.3 pg/ml). Berdasarkan uji korelasi rank-spearman, terdapat korelasi positif bermakna antara LP/TB dengan kadar leptin serum (Spearman rho = 0.5, p= 0.001). Kesimpulan: Terdapat korelasi positif bermakna antara pemeriksaan antropometri LP/TB dengan kadar leptin serum. Rasio lingkar pinggang/tinggi badan dapat digunakan sebagai salah satu indikator kadar leptin serum yang merupakan biomarka prognostik kardiovaskular.
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Damay et al. (2018) conducted a cross-sectional in Coronary Artery Disease (n=37). Waist to height ratio (WHtR) was evaluated on Correlation between WHtR and leptin serum level (Spearman's rho = 0.51, p=0.001). Waist to height ratio showed a significant positive moderate correlation with leptin serum levels (Spearman's rho = 0.51, p=0.001) in patients with stable coronary artery disease.
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