scholarly journals Renin angiotensin system molecules and chemokine (C-C motif) ligand 2 (CCL2) in chronic kidney disease patients

2021 ◽  
Author(s):  
Isabella Viana Gomes Schettini ◽  
Débora Vargas Faria ◽  
Leilismara Sousa Nogueira ◽  
Alba Otoni ◽  
Ana Cristina Simões e Silva ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Plasma Levels ◽  
Kidney Injury ◽  
Renin Angiotensin System ◽  
Control Group ◽  
Angiotensin System ◽  
Renin Angiotensin ◽  
Lower Ratio ◽  
Injury Progression

Abstract Introduction: Studies have shown that the renin angiotensin aldosterone system (RAAS) and inflammation are related to kidney injury progression. The aim of this study was to evaluate RAAS molecules and chemokine (C-C motif) ligand 2 (CCL2) in 82 patients with chronic kidney disease (CKD). Methods: Patients were divided into two groups: patients diagnosed with CKD and patients without a CKD diagnosis. Glomerular filtration rate (GFR) and albumin/creatinine ratio (ACR) were determined, as well as plasma levels of angiotensin-(1-7) [Ang-(1-7)], angiotensin-converting enzyme (ACE)1, ACE2, and plasma and urinary levels of CCL2. Results: CCL2 plasma levels were significantly higher in patients with CKD compared to the control group. Patients with lower GFR had higher plasma levels of ACE2 and CCL2 and lower ratio ACE1/ACE2. Patients with higher ACR values had higher ACE1 plasma levels. Conclusion: Patients with CKD showed greater activity of both RAAS axes, the classic and alternative, and higher plasma levels of CCL2. Therefore, plasma levels of RAAS molecules and CCL2 seem to be promising prognostic markers and even therapeutic targets for CKD.

Salt-sensitive hypertension in chronic kidney disease: distal tubular mechanisms

2020 ◽  
Vol 319 (5) ◽  
pp. F729-F745
Author(s):  
Dominique M. Bovée ◽  
Catharina A. Cuevas ◽  
Robert Zietse ◽  
A. H. Jan Danser ◽  
Katrina M. Mirabito Colafella ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Mineralocorticoid Receptor ◽  
Kidney Injury ◽  
Renin Angiotensin System ◽  
Distal Nephron ◽  
T Helper 17 ◽  
Angiotensin System ◽  
Renin Angiotensin ◽  
Salt Sensitive Hypertension

Chronic kidney disease (CKD) causes salt-sensitive hypertension that is often resistant to treatment and contributes to the progression of kidney injury and cardiovascular disease. A better understanding of the mechanisms contributing to salt-sensitive hypertension in CKD is essential to improve these outcomes. This review critically explores these mechanisms by focusing on how CKD affects distal nephron Na+ reabsorption. CKD causes glomerulotubular imbalance with reduced proximal Na+ reabsorption and increased distal Na+ delivery and reabsorption. Aldosterone secretion further contributes to distal Na+ reabsorption in CKD and is not only mediated by renin and K+ but also by metabolic acidosis, endothelin-1, and vasopressin. CKD also activates the intrarenal renin-angiotensin system, generating intratubular angiotensin II to promote distal Na+ reabsorption. High dietary Na+ intake in CKD contributes to Na+ retention by aldosterone-independent activation of the mineralocorticoid receptor mediated through Rac1. High dietary Na+ also produces an inflammatory response mediated by T helper 17 cells and cytokines increasing distal Na+ transport. CKD is often accompanied by proteinuria, which contains plasmin capable of activating the epithelial Na+ channel. Thus, CKD causes both local and systemic changes that together promote distal nephron Na+ reabsorption and salt-sensitive hypertension. Future studies should address remaining knowledge gaps, including the relative contribution of each mechanism, the influence of sex, differences between stages and etiologies of CKD, and the clinical relevance of experimentally identified mechanisms. Several pathways offer opportunities for intervention, including with dietary Na+ reduction, distal diuretics, renin-angiotensin system inhibitors, mineralocorticoid receptor antagonists, and K+ or H+ binders.

Hypertension in Chronic Kidney Disease: Novel Insights

2020 ◽  
Vol 16 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Anila Duni ◽  
Evangelia Dounousi ◽  
Paraskevi Pavlakou ◽  
Theodoros Eleftheriadis ◽  
Vassilios Liakopoulos
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Arterial Hypertension ◽  
Treatment Strategies ◽  
Kidney Injury ◽  
Renin Angiotensin System ◽  
Renal Protection ◽  
Angiotensin System ◽  
Renin Angiotensin ◽  
Meta Analyses

Management of arterial hypertension in patients with chronic kidney disease (CKD) remains a major challenge due to its high prevalence and associations with cardiovascular disease (CVD) and CKD progression. Several clinical trials and meta-analyses have demonstrated that aggressive treatment of hypertension in patients with and without CKD lowers the risk of CVD and all-cause mortality, nevertheless the effects of blood pressure (BP) lowering in terms of renal protection or harm remain controversial. Both home and ambulatory BP estimation have shown that patients with CKD display abnormal BP patterns outside of the office and further investigation is required, so as to compare the association of ambulatory versus office BP measurements with hard outcomes and adjust treatment strategies accordingly. Although renin-angiotensin system blockade appears to be beneficial in patients with advanced CKD, especially in the setting of proteinuria, discontinuation of renin-angiotensin system inhibition should be considered in the setting of frequent episodes of acute kidney injury or hypotension while awaiting the results of ongoing trials. In light of the new evidence in favor of renal denervation in arterial hypertension, the indications and benefits of its application in individuals with CKD need to be clarified by future studies. Moreover, the clinical utility of the novel players in the pathophysiology of arterial hypertension and CKD, such as microRNAs and the gut microbiota, either as markers of disease or as therapeutic targets, remains a subject of intensive research.

scholarly journals Effect of sodium bicarbonate supplementation on the renin-angiotensin system in patients with chronic kidney disease and acidosis: a randomized clinical trial

2020 ◽  
Author(s):  
Dominique M. Bovée ◽  
Lodi C. W. Roksnoer ◽  
Cornelis van Kooten ◽  
Joris I. Rotmans ◽  
Liffert Vogt ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Sodium Chloride ◽  
Kidney Disease ◽  
Sodium Bicarbonate ◽  
Renin Angiotensin System ◽  
Ammonium Excretion ◽  
Angiotensin System ◽  
Renin Angiotensin ◽  
Endothelin 1 ◽  
Plasma Bicarbonate

Abstract Background Acidosis-induced kidney injury is mediated by the intrarenal renin-angiotensin system, for which urinary renin is a potential marker. Therefore, we hypothesized that sodium bicarbonate supplementation reduces urinary renin excretion in patients with chronic kidney disease (CKD) and metabolic acidosis. Methods Patients with CKD stage G4 and plasma bicarbonate 15–24 mmol/l were randomized to receive sodium bicarbonate (3 × 1000 mg/day, ~ 0.5 mEq/kg), sodium chloride (2 × 1,00 mg/day), or no treatment for 4 weeks (n = 15/arm). The effects on urinary renin excretion (primary outcome), other plasma and urine parameters of the renin-angiotensin system, endothelin-1, and proteinuria were analyzed. Results Forty-five patients were included (62 ± 15 years, eGFR 21 ± 5 ml/min/1.73m2, plasma bicarbonate 21.7 ± 3.3 mmol/l). Sodium bicarbonate supplementation increased plasma bicarbonate (20.8 to 23.8 mmol/l) and reduced urinary ammonium excretion (15 to 8 mmol/day, both P < 0.05). Furthermore, a trend towards lower plasma aldosterone (291 to 204 ng/L, P = 0.07) and potassium (5.1 to 4.8 mmol/l, P = 0.06) was observed in patients receiving sodium bicarbonate. Sodium bicarbonate did not significantly change the urinary excretion of renin, angiotensinogen, aldosterone, endothelin-1, albumin, or α1-microglobulin. Sodium chloride supplementation reduced plasma renin (166 to 122 ng/L), and increased the urinary excretions of angiotensinogen, albumin, and α1-microglobulin (all P < 0.05). Conclusions Despite correction of acidosis and reduction in urinary ammonium excretion, sodium bicarbonate supplementation did not improve urinary markers of the renin-angiotensin system, endothelin-1, or proteinuria. Possible explanations include bicarbonate dose, short treatment time, or the inability of urinary renin to reflect intrarenal renin-angiotensin system activity. Graphic abstract

scholarly journals Treatment with patiromer decreases aldosterone in patients with chronic kidney disease and hyperkalemia on renin-angiotensin system inhibitors

2016 ◽  
Vol 90 (3) ◽  
pp. 696-704 ◽  
Author(s):  
Matthew R. Weir ◽  
George L. Bakris ◽  
Coleman Gross ◽  
Martha R. Mayo ◽  
Dahlia Garza ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Renin Angiotensin System ◽  
Angiotensin System ◽  
Renin Angiotensin

scholarly journals Stopping Renin-Angiotensin System Inhibitors in Chronic Kidney Disease: Predictors of Response

2011 ◽  
Vol 119 (4) ◽  
pp. c348-c354 ◽  
Author(s):  
Anderson Roman Gonçalves ◽  
Arif Khwaja ◽  
Aimune K. Ahmed ◽  
Mohsen El Kossi ◽  
Meguid El Nahas
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Renin Angiotensin System ◽  
Angiotensin System ◽  
Renin Angiotensin ◽  
Predictors Of Response
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