scholarly journals The effectiveness of the replacement of the generic blockers of the renin-angiotensin-aldosterone system by perindopril arginine in patients with uncontrolled blood pressure: the results of the regional program “DIFFERENCE”

2018 ◽  
Vol 24 (3) ◽  
pp. 359-368
Author(s):  
N. N. Nikulina

Taking into account the widespread use of generic drugs and insufficient rate of achieving the target blood pressure (BP), a regional program “DIFFERENCE” was initiated. The purpose of this study was to assess the chance of increasing the effectiveness of antihypertensive therapy (AHT) by replacing generic perindopril and receptor blockers to angiotensin II (BRA) by the original perindopril and generic indapamide by the original one.Design and methods. The study included 330 hypertensive patients (47,3% males; the average age of men is 53,5 ± 8,5 years, women — 54,2 ± 10,2 years, p > 0,05). The mean systolic BP was 149,5 ± 5,3 mm Hg, average diastolic BP — 96,4 ± 4,9 mm Hg; 1st HTN degree was achieved in 49,1% patients, 2nd — in 41,2%; 3rd degree remained in 9,7%. Monotherapy of HTN was prescribed in 79,4% patients.Results. After the transfer from the generic perindopril to the original drug (± transfer from the generic indapamide to the original one) within 4 weeks no other changes of AHT were introduced. During these 4 weeks, the average systolic BP decreased to 139,1 ± 5,1 mm Hg, diastolic blood pressure declined to 88,2 ± 5,8 mm Hg, which allowed to achieve the target BP in 37,0% patients (p < 0,01). On the Month 1 visit, taking into account indications, the frequency of combined AHT increased to 76,4%, on the Month 3 visit — to 88,2%, exceeding the original one by 4,3 times (p < 0,01). On the Month 3 visit the average systolic BP was 136,5 mm Hg, diastolic BP — 85,9 mm Hg, the target BP level was achieved in 53,9% cases (p < 0,01). By the study completion, the most often combination included perindopril with diuretic or calcium antagonist.Conclusions. The study “DIFFERENCE” demonstrated the effectiveness of the replacement of generic perindopril and BRA by the original perindopril combined, if necessary, with the replacement of generic indapamide by the original one in patients wth uncontrolled HTN. To date, the combined AHT has not been assigned frequently enough, which is also the reason for the insufficient efficiency. The most common were the combinations of perindopril with diuretic or calcium antagonist. 

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
C A Paterno Marchioli

Abstract Background Protective effect of Angiotensin-II Receptor Blockers (ARBs) on major cardiovascular events might be partly independent of the degree of blood pressure reduction. Calcium channel blockers (CCBs), lower arterial pressure by decreasing total peripheral resistance without reducing cardiac output. Hydrochlorothiazide (Hctz) is one of the most commonly prescribed antihypertensive drugs worldwide, but associated with more frequent adverse effects, such as hypokalaemia, hyponatraemia, hyperuricaemia and may increase the glycaemia, It sensitizes the endothelium to the action of angiotensin II, might act on the aldosterone release. The phenomenon of “aldosterone escape” occurs even in the presence of combination therapy with ARBs. The harmful effects of aldosterone are innumerable: induced cardiac and renal fibrosis, sodium and water retention, inflammation, oxidative stress, arrhythmias, glucose intolerance, insulin resistance, among others, that are involved in arterial and myocardium remodelling. Mineralocorticoid Receptor Antagonists (MRAs) therapy improve diastolic function, decrease plasma volume and vascular/myocardial fibrosis. Purpose This study aimed to assess the responses of two groups of therapy such as ARBs associated to MRAs or to CCBs+Hctz according to central haemodynamic parameters (CHPs) in hypertensive patients, both genders, with normal kidney function. Methods For this cross-sectional retrospective study, data were collected from 391 hypertensive patients who were assisted in the hypertension centre. Female/male 239/152, each gender divided into two groups of therapy: ARB+MRA/ARB+CCB+Hctz. Female 210/29 (average age 57/70) and male 125/27 (average age 55/61). The CHPs were measured with a SphygmoCor System PVX (AtCor-Medical Australia), a validated device employing the high-fidelity technique of applanation tonometry according to established protocols. Also, the difference of Augmentation Index (Diff-AIx) between the observed values and the expected levels was assessed according to normal range by age. No patients had cardiovascular, endocrine, renal and metabolic decompensated diseases. Results After measuring the body mass index, waist circumference and heart rate, the two therapy groups were confronted, both genders, had not found the statistically significant difference. The results of CHPs (Central Aortic Pressure, End-Systolic Pressure, Mean Arterial Pressure, Pulse Pressure, Augmentation Pressure), systolic and diastolic blood pressure during association of ARBs+MRAs therapy compared to ARBs+CCBs+Hctz, both genders, showed the lowest values with a highly statistically significant difference. In the female/male the Diff-AIx was found p=0.05/0.04. Conclusion These findings suggest that ARBs+MRAs treatment reaches the best haemodynamic conditions because improve the levels of CHPs and arterial stiffness (Diff-AIx) giving an adequate reduction of the stress to the arterial-ventricular coupling.


Author(s):  
Varun Gupta ◽  
Pooja Singh

Background: Angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers (ARBs) are being used as first line agents for the treatment of hypertension in haemodialysis patients as well as in the general population. Serious hyperkalemia is common in patients with end-stage renal disease, and is observed in about 10% of haemodialysis patients. Although many research have been done so far to compare the antihypertensive efficacy of ARBs, but such studies to evaluate the effect on serum urea, creatinine and potassium levels are not so common in North India region.Methods: In this open label, prospective, randomized study, we evaluated the effect on serum urea, creatinine and potassium levels with use of ARB’s (olmesartan or telmisartan) in stage 1 hypertensive patients (JNCVII). 60 patients were randomized in to two groups. The odd numbers will be allotted olmesartan 20 mg (group A) and even numbers to telmisartan 40 mg (group B). Impacts on serum urea, creatinine and potassium levels were evaluated after 12 weeks.Results: Our results indicates that there was no statistically significant alterations in mean serum creatinine, blood urea and in mean serum potassium levels compared to baseline within the two groups as well as when mean of both groups were compared, olmesartan showed a better reduction in blood pressure as compared to telmisartan.Conclusions: Olmesartan showed a better reduction in blood pressure with similar effects in biochemical parameters as telmisartan.


Author(s):  
Azza S. Jabbar ◽  
Nadheera F. Neamah ◽  
Ahmed H. Al-Darraji

Abstract Objectives Hypertension is a very common cardiovascular disease. Angiotensin-converting enzyme inhibitors (ACEi) and angiotensin II receptor blockers (ARBs) are widely used to treat hypertension. Many patients with hypertension are vulnerable to the antihypertensive adverse effects, which potentially reduces the adherence rate. Therefore, we conducted this study in order to evaluate the safety profile of both classes (ACEi and ARBs) on respiratory functions. Methods Two main groups of subjects were studied: first group is healthy control subjects and the second group is hypertensive patients, which was subdivided into subgroups in order to investigate the effect of all tested medications (captopril, enalapril, lisinopril, losartan, and valsartan). Respiratory efficiency was evaluated by measuring pulmonary function tests: FEV1, FVC, and FEV1%. Measurements were done using micromedical spirometer. Results We found that ARBs do not impair normal respiratory functions as measured by FEV1, FEV1%, and FVC in hypertensive patients. While ACEi treatments significantly reduced FEV1, FEV1%, and FVC compared to the other groups. Conclusions ARBs are not associated with any harmful effects on respiratory functions in hypertensive patients, unlike ACEi. As such, they could represent a first-choice treatment for hypertensive patients who are at high risk to the respiratory adverse effects.


2013 ◽  
Vol 26 (11) ◽  
pp. 1328-1334 ◽  
Author(s):  
Xuefeng Liu ◽  
Ping Song

Abstract BACKGROUND Clinical evidence shows that diabetes may provoke uncontrolled blood pressure (BP) in hypertensive patients. However, racial differences in the associations of diabetes with uncontrolled BP outcomes among diagnosed hypertensive patients have not been evaluated. METHODS A total of 6,134 diagnosed hypertensive subjects aged ≥20 years were collected from the National Health and Nutrition Examination Survey 1999–2008 with a stratified multistage design. Odds ratios (ORs) and relative ORs of uncontrolled BP and effect differences in continuous BP for diabetes over race/ethnicity were derived using weighted logistic regression and linear regression models. RESULTS Compared with participants who did not have diabetes, non-Hispanic black participants with diabetes had a 138% higher chance of having uncontrolled BP, Mexican participants with diabetes had a 60% higher chance of having uncontrolled BP, and non-Hispanic white participants with diabetes had a 161% higher chances of having uncontrolled BP. The association of diabetes with uncontrolled BP was lower in Mexican Americans than in non-Hispanic blacks and whites (Mexican Americans vs. non-Hispanic blacks: relative OR = 0.55, 95% confidence interval (CI) = 0.37–0.82; Mexican Americans vs. non-Hispanic whites: relative OR = 0.53, 95% CI = 0.35–0.80) and the association of diabetes with isolated uncontrolled systolic BP was lower in Mexican Americans than in non-Hispanic whites (Mexican Americans vs. non-Hispanic whites: relative OR = 0.62, 95% CI = 0.40–0.96). Mexican Americans have a stronger associaton of diabetes with decreased systolic BP and diastolic BP than non-Hispanic whites, and a stronger association of diabetes with decreased diastolic BP than non-Hispanic blacks. CONCLUSIONS The association of diabetes with uncontrolled BP outcomes is lower despite higher prevalence of diabetes in Mexican Americans than in non-Hispanic whites. The stronger association of diabetes with BP outcomes in whites should be of clinical concern, considering they account for the majority of the hypertensive population in the United States.


2013 ◽  
Vol 4 (3) ◽  
Author(s):  
Renny M. Toreh ◽  
Sonny J.R. Kalangi ◽  
Sunny Wangko

Abstract: As the main structural component of the renin-angiotensin-aldosterone system (RAAS), the juxtaglomerular complex plays a very important role in the regulation of vascular resistance. The synthesis and release of renin into the circulation occurs due to the decrease of blood pressure, loss of body fluid, and a decrease of sodium intake. Renin converts angiotensinogen into angiotensin I, which is further converted by the angiotensin converting enzyme (ACE) into angiotensin II. This angiotensin II causes vasoconstriction of blood vessels, resulting in an increase of vascular resistance and blood pressure. The ACE inhibitors and the angiotensin receptor blockers (ARBs) do not inhibit the RAAS completely since they cause an increase of renin activity. The renin blockers are more effective in inhibiting RAAS activity; therefore, these renin blockers can be applied as antihypertensive agents with fewer side effects. The RAAS activity can be inhibited by a decrease of renin synthesis in the juxtaglomerular complex by blocking the signals in the juxtaglomerular complex that stimulate renin synthesis, and by blocking the gap junctions in the juxtaglomerular complex. Keywords: juxtaglomerular complex, vascular resistance, RAAS.   Abstrak: Kompleks jukstaglomerulus sebagai komponen struktural utama sistem renin angiotensin berperan penting dalam pengaturan resistensi pembuluh darah. Sintesis dan pelepasan renin ke sirkulasi terjadi karena tekanan darah yang rendah, kehilangan cairan tubuh, dan kurangnya intake natrium. Renin akan memecah angiotensinogen menjadi angiotesin I yang kemudian secara cepat dikonversi oleh enzim pengonversi angiotensin  menjadi angiotensin II. Angiotensin II menyebabkan vasokontriksi pembuluh darah sehingga meningkatkan resistensi pembuluh darah yang pada akhirnya akan meningkatkan tekanan darah. ACEinhibitor dan ARB kurang sempurna dalam menghambat kerja SRAA oleh karena keduanya memutuskan rantai mekanisme timbal balik sehingga meningkatkan aktifitas renin. Penghambat renin lebih efektif digunakan untuk menghambat aktifitas SRAA sehingga penghambat renin dapat digunakan sebagai obat anti-hipertensi dan memiliki efek samping yang rendah. Metode penghambatan SRAA yang juga dapat dikembangkan ialah penghambatan sintesis renin dalam kompleks jukstaglomerulus dengan cara menekan sinyal-sinyal dalam kompleks jukstaglomerulus yang merangsang sintesis renin dan menghambat fungsi taut kedap yang terdapat dalam kompleks jukstaglomerulus. Kata kunci: kompleks juksta glomerulus, resistensi vaskular, SRAA.


2021 ◽  
Vol 17 (4) ◽  
Author(s):  
Mina Hemmati ◽  
Fatemeh Abharzanjani ◽  
Tooba Kazemi ◽  
Fateme Estanesti

Background: Apelin, an adipokine secreted from adipose tissue, plays an important role in regulating blood pressure and hypertension. Objectives: The current study aimed to compare the plasma Apelin level in hypertensive patients under treatment with amlodipine, losartan, and amlodipine + losartan. Methods: In this case-control study, the serum level of Apelin was compared in four groups of (A) Healthy subjects (n = 31); (B) Hypertensive patients, received amlodipine (n = 31); Hypertensive patients, received losartan (n = 45); and patients (n = 33) that received amlodipine and losartan. Apelin level in serum samples was measured using Human Apelin ELISA Kit according to the manufacturers’ instructions. Data were analyzed using SPSS version 19 (Chicago: SPSS Inc.), at the significant level of α = 0.05. Results: The mean blood level of Apelin in the control group and groups receiving amlodipine, losartan, and amlodipine + losartan was 366.16 ± 36.04, 247.19 ± 27.77, 282.93 ± 47.08, and 289.84 ± 32.20 g/dl, respectively. Losartan + amlodipine group had a higher level of Apelin compared with amlodipine alone (P < 0.05). Conclusions: This study demonstrated that Apelin has a definite protective effect in preventing hypertension. Also, according to the results, the renin-angiotensin-aldosterone system inhibitors, such as losartan, caused a higher increase in the Apelin, resulting in better blood pressure control.


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