ABSTRAK Latar Belakang:Obesitas merupakan salah satu masalah kesehatan utama yang banyak ditemukandi negara maju maupun negara berkembang. Obesitas menjadi salah satu faktorrisiko timbulnya penyakit kardiovaskular. Diketahui bahwa populasi obesitasmemiliki kadar plasma BNP yang rendah dibanding kelompok normal. BNPadalah suatu hormon yang disintesis oleh miosit atrium yang berperan dalammeregulasi hemodinamik tubuh. Selain itu BNP memiliki efek anti fibrosis dan anti hipertrofi pada jantung. Dipikirkan bahwa adanya gangguan sintesis BNP di miosit jantung sebagai salah satu penyebab. Maka, penelitian ini bertujuan untukmelihat profil ekspresi mRNA BNP, NPR-A dan NPR-C pada populasi obesitas.Metode:Studi potong lintang dilakukan di Rumah Sakit Jantung dan Pembuluh DarahHarapan Kita (RSJPDHK). Jaringan miosit tersimpan yang sudah dilakukanekstraksi RNA dibagi menjadi 2 kelompok berdasarkan IMT, kelompok obesitas(IMT ≥27) dan kelompok normal (IMT <27) dan sesuai kriteria inklusi daneksklusi. RNA kedua kelompok dilakukan sintesis cDNA, ekstraksi protein danReal-Time PCR untuk mendapatkan mean ΔCt. Kemudian dilakukanpenghitungan menggunakan metode Livak untuk mendapatkan nilai ekspresirelatif mRNA. Data kemudian di analisis statistik menggunakan SPSS 20.Hasil Penelitian:Sebanyak 48 pasien diikutsertakan dalam penelitian ini dengan jumlah kelompoknormal 34 orang dan kelompok obesitas 14 orang. Hasil ekspresi mRNA BNP,NPR-A dan NPR-C lebih rendah pada kelompok obesitas dibanding kelompoknormal. Namun, tidak didapatkan perbedaan bermakna ekspresi mRNA BNP (p0,768), NPR-A (p 0,838) dan NPR-C (p 0,768) antara kelompok obesitas dibanding kelompok normal. Kesimpulan:Penelitian ini tidak menemukan perbedaan ekspresi mRNA BNP, NPR-A dan NPR-C yang bermakna antara kelompok obesitas dengan kelompok normal. ABSTRACT Background:Obesity is presenting as a significant health problem across the world. Obesity is arisk factor for cardiovascular diseases. The plasma level of B-type natriureticpeptide (BNP) has been identified to be lower in obese people compare to normal.As we know, BNP is one of the cardiac hormones synthesized by atrial myocytethat plays a role in hemodynamic regulations. In addition, BNP exerts its antifibrotic and anti hypertrophic effects in the heart. It has been hypothesized thatone of the possible mechanism responsible for this inverse relationship is theimpaired synthesize of BNP by cardiomyocytes. Therefore, the aim of our study isto evaluate the mRNA expression profile of BNP, Natriuretic peptide receptortype-A (NPR-A) and Natriuretic peptide receptor type-C (NPR-C) incardiomyocytes of obese population. Method:A cross-sectional study was conducted in Rumah Sakit Jantung dan PembuluhDarah Harapan Kita (RSJPDHK). Cardiomyocytes that have been performed theRNA extraction proses were divided into 2 groups, Obese group (BMI ≥27) andNormal group (BMI <27), according to BMI and inclusion and exclusion criteria.Synthesize cDNA, protein extraction and Real-Time PCR were performed inorder to have the mean of ΔCt. Livak method was used to determine the relativeexpression mRNA value. SPSS 20 for Windows was used for the purpose ofstatistical analyses. Results:48 patients were included in this study that consist of 34 patients in normal groupand 14 patients in obese group. The mRNA expression of BNP, NPR-A and NPRCwerelower in obese group compared to normal group. However, there was nosignificant difference between groups.Conclusion:In conclusion, there is no significant difference of mRNA expression of BNP, NPR-A and NPR-C between obese and normal group.;Background:Obesity is presenting as a significant health problem across the world. Obesity is arisk factor for cardiovascular diseases. The plasma level of B-type natriureticpeptide (BNP) has been identified to be lower in obese people compare to normal.As we know, BNP is one of the cardiac hormones synthesized by atrial myocytethat plays a role in hemodynamic regulations. In addition, BNP exerts its antifibrotic and anti hypertrophic effects in the heart. It has been hypothesized thatone of the possible mechanism responsible for this inverse relationship is theimpaired synthesize of BNP by cardiomyocytes. Therefore, the aim of our study isto evaluate the mRNA expression profile of BNP, Natriuretic peptide receptortype-A (NPR-A) and Natriuretic peptide receptor type-C (NPR-C) incardiomyocytes of obese population. Method:A cross-sectional study was conducted in Rumah Sakit Jantung dan PembuluhDarah Harapan Kita (RSJPDHK). Cardiomyocytes that have been performed theRNA extraction proses were divided into 2 groups, Obese group (BMI ≥27) andNormal group (BMI <27), according to BMI and inclusion and exclusion criteria.Synthesize cDNA, protein extraction and Real-Time PCR were performed inorder to have the mean of ΔCt. Livak method was used to determine the relativeexpression mRNA value. SPSS 20 for Windows was used for the purpose ofstatistical analyses. Results:48 patients were included in this study that consist of 34 patients in normal groupand 14 patients in obese group. The mRNA expression of BNP, NPR-A and NPRCwerelower in obese group compared to normal group. However, there was nosignificant difference between groups.Conclusion:In conclusion, there is no significant difference of mRNA expression of BNP, NPR-A and NPR-C between obese and normal group. |