Essential hypertension and its common complication - chronic heart failure, is one of the most significant medical, economic and social problems in the XXI century. At the same time, this pathology is 30-40% genetically predisposed. One of significant pathogenic factors is the inheritance of definite variants of genes, coding the receptors to angiotensin II type 1. For this reason, the effective and inexpensive researches for screening of the mentioned genetic phenomenon are being carried out. Objective: to improve the screening diagnostic methods for carriers of polymorphic genes of angiotensin II type 1 receptors with essential hypertension and essential hypertension complicated by chronic heart failure. There were studied dermatoglyphic prints of men 40-60 years, who are carriers of polymorphic gene variants of angiotensin II type 1 receptor with no cardiovascular diseases (n=79), male patients with essential hypertension and hypertrophy of the myocardium (stage II), II-III stages (n=62) and essential hypertension (n=50) complicated by chronic heart failure, residents of Podillya region of Ukraine. Genotyping of the gene of angiotensin II type 1 receptor was performed using polymerase chain reaction. All patients included in the control group and those with essential hypertension underwent dermatoglyphic examination of fingers on both hands using modern portable rolling scanner Futronic FS50 (Korea). Interpretation and decoding of dermatoglyphic prints was conducted by T. D. Gladkova’s method. Statistical analysis was done on personal computer using standard statistical package “STATISTICA 10.0”. The found ulnar loop was dominant dermatoglyphic print regardless of the presence or absence of essential hypertension and chronic heart failure in 40-60 year old men. Besides, positive correlation relationship was revealed between the inheritance gene of angiotensin II type 1 receptors and fingerprint patterns: the third finger on the left hand in males with no cardiovascular pathology (weak strength) and the second finger on the right hand in patients with essential hypertension (medium strength). In individuals with no cardiovascular diseases, carriers of genotype A1166A, prevalence of ulnar loop on the third finger of left hand is higher than in carriers of C allele gene of angiotensin II type 1 receptors. In males with essential hypertension, carriers of C allele, degree of incidence of the whorl on the second finger of right hand is significantly higher than in carriers of genotype А1166А, offering the possibility to determine the carriership of a particular gene of angiotensin II type 1 receptors. Carrying out dermatoglyphic examination in patients with an increase in blood pressure and determining the variant of carrier of the gene of the receptor to angiotensin II type 1 will make it possible to facilitate the selection of those individuals who in the future need to spend all the necessary amount of research to confirm the diagnosis of essential hypertension and the possible development of complications of the course of this cardiovascular disease.
Role of angiotensin II type 2 receptors and kinins in the cardioprotective effect of angiotensin II type 1 receptor antagonists in rats with heart failure
