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Schult L, Halbgebauer R, Karasu E, Huber-Lang M. Glomerular injury after trauma, burn, and sepsis. J Nephrol 2023; 36:2417-2429. [PMID: 37542608 PMCID: PMC10703988 DOI: 10.1007/s40620-023-01718-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 06/23/2023] [Indexed: 08/07/2023]
Abstract
Acute kidney injury development after trauma, burn, or sepsis occurs frequently but remains a scientific and clinical challenge. Whereas the pathophysiological focus has mainly been on hemodynamics and the downstream renal tubular system, little is known about alterations upstream within the glomerulus post trauma or during sepsis. Particularly for the glomerular endothelial cells, mesangial cells, basal membrane, and podocytes, all of which form the glomerular filter, there are numerous in vitro studies on the molecular and functional consequences upon exposure of single cell types to specific damage- or microbial-associated molecular patterns. By contrast, a lack of knowledge exists in the real world regarding the orchestrated inflammatory response of the glomerulus post trauma or burn or during sepsis. Therefore, we aim to provide an overview on the glomerulus as an immune target but also as a perpetrator of the danger response to traumatic and septic conditions, and present major players involved in the context of critical illness. Finally, we highlight research gaps of this rather neglected but worthwhile area to define future molecular targets and therapeutic strategies to prevent or improve the course of AKI after trauma, burn, or sepsis.
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Affiliation(s)
- Lorena Schult
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Helmholtzstr. 8/1, 89081, Ulm, Germany
| | - Rebecca Halbgebauer
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Helmholtzstr. 8/1, 89081, Ulm, Germany
| | - Ebru Karasu
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Helmholtzstr. 8/1, 89081, Ulm, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Helmholtzstr. 8/1, 89081, Ulm, Germany.
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Gleeson PJ, Crippa IA, Mongkolpun W, Cavicchi FZ, Van Meerhaeghe T, Brimioulle S, Taccone FS, Vincent J, Creteur J. Renin as a Marker of Tissue-Perfusion and Prognosis in Critically Ill Patients*: . Crit Care Med 2019; 47:152-8. [DOI: 10.1097/ccm.0000000000003544] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Yokota R, Ronchi FA, Fernandes FB, Jara ZP, Rosa RM, Leite APDO, Fiorino P, Farah V, do Nascimento NRF, Fonteles MC, Casarini DE. Intra-Renal Angiotensin Levels Are Increased in High-Fructose Fed Rats in the Extracorporeal Renal Perfusion Model. Front Physiol 2018; 9:1433. [PMID: 30364140 PMCID: PMC6191567 DOI: 10.3389/fphys.2018.01433] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 09/20/2018] [Indexed: 11/13/2022] Open
Abstract
Overconsumption of fructose leads to metabolic syndrome as a result of hypertension, insulin resistance, and hyperlipidemia. In this study, the renal function of animals submitted to high fructose intake was analyzed from weaning to adulthood using in vivo and ex vivo methods, being compared with a normal control group. We investigated in ex vivo model of the role of the renin Angiotensin system (RAS) in the kidney. The use of perfused kidney from animals submitted to 8-week fructose treatment showed that high fructose intake caused metabolic and cardiovascular alterations that were consistent with other studies. Moreover, the isolated perfused kidneys obtained from rats under high fructose diet showed a 33% increase in renal perfusion pressure throughout the experimental period due to increased renal vascular resistance and a progressive fall in the glomerular filtration rate, which reached a maximum of 64% decrease. Analysis of RAS peptides in the high fructose group showed a threefold increase in the renal concentrations of angiotensin I (Ang I) and a twofold increase in angiotensin II (Ang II) levels, whereas no change in angiotensin 1-7 (Ang 1-7) was observed when compared with the control animals. We did not detect changes in angiotensin converting enzyme (ACE) activity in renal tissues, but there is a tendency to decrease. These observations suggest that there are alternative ways of producing Ang II in this model. Chymase the enzyme responsible for Ang II formation direct from Ang I was increased in renal tissues in the fructose group, confirming the alternative pathway for the formation of this peptide. Neprilysin (NEP) the Ang 1-7 forming showed a significant decrease in activity in the fructose vs. control group, and a tendency of reduction in ACE2 activity. Thus, these results suggest that the Ang 1-7 vasodilator peptide formation is impaired in this model contributing with the increase of blood pressure. In summary, rats fed high fructose affect renal RAS, which may contribute to several deleterious effects of fructose on the kidneys and consequently an increase in blood pressure.
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Affiliation(s)
- Rodrigo Yokota
- Nephrology Division, Department of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | | | | | - Zaira Palomino Jara
- Nephrology Division, Department of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - Rodolfo Mattar Rosa
- Nephrology Division, Department of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | | | - Patricia Fiorino
- Laboratory of Renal, Cardiovascular, and Metabolic Physiopharmacology, Center for Health and Biological Sciences, Mackenzie Presbyterian University, São Paulo, Brazil
| | - Vera Farah
- Laboratory of Renal, Cardiovascular, and Metabolic Physiopharmacology, Center for Health and Biological Sciences, Mackenzie Presbyterian University, São Paulo, Brazil
| | | | - Manassés C Fonteles
- Laboratory of Renal, Cardiovascular, and Metabolic Physiopharmacology, Center for Health and Biological Sciences, Mackenzie Presbyterian University, São Paulo, Brazil.,Superior Institute of Biomedical Sciences, Ceará State University, Fortaleza, Brazil
| | - Dulce Elena Casarini
- Nephrology Division, Department of Medicine, Federal University of São Paulo, São Paulo, Brazil
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Martins-Oliveira A, Guimaraes DA, Ceron CS, Rizzi E, Oliveira DM, Tirapelli CR, Casarini DE, Fernandes FB, Pinheiro LC, Tanus-Santos JE. Direct renin inhibition is not enough to prevent reactive oxygen species generation and vascular dysfunction in renovascular hypertension. Eur J Pharmacol 2018; 821:97-104. [DOI: 10.1016/j.ejphar.2018.01.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/08/2017] [Accepted: 01/08/2018] [Indexed: 02/07/2023]
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5
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Bhatt NP, Park JY, Lee HJ, Kim SS, Kwon YS, Chun W. Apocynin protects mesangial cells from lipopolysaccharide-induced inflammation by exerting heme oxygenase 1-mediated monocyte chemoattractant protein-1 suppression. Int J Mol Med 2017; 40:1294-1301. [DOI: 10.3892/ijmm.2017.3090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 08/01/2017] [Indexed: 11/06/2022] Open
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Haller H, Park JK, Lindschau C, Meyer M, Menne J. Intrarenal renin-angiotensin system — important player of the local milieu. J Renin Angiotensin Aldosterone Syst 2016; 7:122-5. [PMID: 17083066 DOI: 10.3317/jraas.2006.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Hermann Haller
- Department of Nephrology, Hannover Medical School, Germany
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Rosa RM, Colucci JA, Yokota R, Moreira RP, Aragão DS, Ribeiro AA, Arita DY, Watanabe IKM, Palomino Z, Cunha TS, Casarini DE. Alternative pathways for angiotensin II production as an important determinant of kidney damage in endotoxemia. Am J Physiol Renal Physiol 2016; 311:F496-504. [PMID: 27252489 DOI: 10.1152/ajprenal.00121.2014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 05/24/2016] [Indexed: 12/22/2022] Open
Abstract
Sepsis is an uncontrolled systemic inflammatory response against an infection and a major public health issue worldwide. This condition affects several organs, and, when caused by Gram-negative bacteria, kidneys are particularly damaged. Due to the importance of renin-angiotensin system (RAS) in regulating renal function, in the present study, we aimed to investigate the effects of endotoxemia over the renal RAS. Wistar rats were injected with Escherichia coli lipopolysaccharide (LPS) (4 mg/kg), mimicking the endotoxemia induced by Gram-negative bacteria. Three days after treatment, body mass, blood pressure, and plasma nitric oxide (NO) were reduced, indicating that endotoxemia triggered cardiovascular and metabolic consequences and that hypotension was maintained by NO-independent mechanisms. Regarding the effects in renal tissue, inducible NO synthase (iNOS) was diminished, but no changes in the renal level of NO were detected. RAS was also highly affected by endotoxemia, since renin, angiotensin-converting enzyme (ACE), and ACE2 activities were altered in renal tissue. Although these enzymes were modulated, only angiotensin (ANG) II was augmented in kidneys; ANG I and ANG 1-7 levels were not influenced by LPS. Cathepsin G and chymase activities were increased in the endotoxemia group, suggesting alternative pathways for ANG II formation. Taken together, our data suggest the activation of noncanonical pathways for ANG II production and the presence of renal vasoconstriction and tissue damage in our animal model. In summary, the systemic administration of LPS affects renal RAS, what may contribute for several deleterious effects of endotoxemia over kidneys.
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Affiliation(s)
- Rodolfo Mattar Rosa
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Juliana Almada Colucci
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Rodrigo Yokota
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Roseli Peres Moreira
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Danielle Sanches Aragão
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Amanda Aparecida Ribeiro
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Danielle Yuri Arita
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Ingrid Kazue Mizuno Watanabe
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Zaira Palomino
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
| | - Tatiana Sousa Cunha
- Science and Technology Department, Instituto de Ciência e Tecnologia, Universidade Federal de São Paulo, São José dos Campos, Brazil
| | - Dulce Elena Casarini
- Medicine Department, Nephrology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; and
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Lima CT, Silva JC, Viegas KA, Oliveira TC, Lima RS, Souza LE, Aragão D, Casarini DE, Irigoyen MC, Lacchini S. Increase in Vascular Injury of Sodium Overloaded Mice May be Related to Vascular Angiotensin Modulation. PLoS One 2015; 10:e0128141. [PMID: 26030299 DOI: 10.1371/journal.pone.0128141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 04/22/2015] [Indexed: 01/07/2023] Open
Abstract
This study aimed to analyzing the effect of chronic sodium overload upon carotid and femoral injury, and its relation to vascular angiotensin modulation. Male C57Bl6 mice were divided in: control (cont), receiving 1% NaCl solution for 2 weeks (salt-2) or 12 weeks (salt-12). Two-weeks before the end of the study, a 2mm catheter was implanted around the left femoral and carotid arteries to induce injury. Blood pressure (BP) and heart rate (HR) were measured at the end of the study by tail plethysmography. Arteries were collected and prepared for histological analysis to determine arterial thickening and perivascular collagen deposition. Angiotensin II and Ang(1-7) were quantified in fresh arteries using the HPLC method. There were no differences in body weight, BP and HR. Intima/media ratio had a similar increase in both injured arteries of cont and salt-2 mice, but a more pronounced increase was observed in salt-12 mice (31.1±6%). On the other hand, sodium overload modified perivascular collagen deposition, increasing thick fibers (cont: 0.5%; salt-2: 3.4%; salt-12: 0.6%) and decreasing thin fibers (cont: 7.4%; salt-2: 0.5%; salt-12: 6.8%) in non-injured arteries. Injured arteries presented similar collagen fiber distribution. Angiotensin quantification showed increased Ang(1-7) in salt treated mice (salt-2: +72%; salt-12: +45%) with a concomitant decrease in Ang II (salt-2: -54%; salt-12: -60%). Vascular injury increased significantly Ang(1-7) in salt-12 mice (+80%), maintaining Ang II reduction similar to that of a non-injured artery. The lack of changes in BP and HR suggests that the structural changes observed may be due to non-hemodynamic mechanisms such as local renin-angiotensin system. Collagen evaluation suggests that sodium overload induces time-related changes in vascular remodeling. The increase of artery injury with concomitant increase in Ang(1-7) in 12-week treated mice shows a direct association between the duration of salt treatment and the magnitude of vascular injury.
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Goel R, Bhat SA, Rajasekar N, Hanif K, Nath C, Shukla R. Hypertension exacerbates predisposition to neurodegeneration and memory impairment in the presence of a neuroinflammatory stimulus: Protection by angiotensin converting enzyme inhibition. Pharmacol Biochem Behav 2015; 133:132-45. [PMID: 25869103 DOI: 10.1016/j.pbb.2015.04.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 03/17/2015] [Accepted: 04/06/2015] [Indexed: 01/06/2023]
Abstract
Hypertension is a risk factor for cognitive impairment. Furthermore, neuroinflammation and neurodegeneration are intricately associated with memory impairment. Therefore, the present study aimed to explore the involvement of hypertension and angiotensin system in neurodegeneration and memory dysfunction in the presence of neuroinflammatory stimulus. Memory impairment was induced by chronic neuroinflammation that was developed by repeated intracerebroventricular (ICV) injections of lipopolysaccharide (LPS) on the 1st, 4th, 7th, and 10th day. Memory functions were evaluated by the Morris water maze (MWM) test on days 13-15, followed by biochemical and molecular studies in the cortex and hippocampus regions of rat brain. LPS at the dose of 25μg ICV caused memory impairment in spontaneously hypertensive rats (SHRs) but not in normotensive Wistar rats (NWRs). Memory deficit was obtained with 50μg of LPS (ICV) in NWRs. Control SHRs already exhibited increased angiotensin converting enzyme (ACE) activity and expression, neuroinflammation (increased TNF-α, GFAP, COX-2 and NF-kB), oxidative stress (increased iNOS, ROS and nitrite levels), TLR-4 expression and TUNEL positive cells as compared to control NWRs. Further, LPS (25μg ICV) exaggerated inflammatory response, oxidative stress and apoptosis in SHRs but similar effects were witnessed at 50μg of LPS (ICV) in NWRs. Oral administration of perindopril (ACE inhibitor), at non-antihypertensive dose (0.1mg/kg), for 15days attenuated LPS induced deleterious changes in both NWRs and SHRs. Our data suggest that susceptibility of the brain for neurodegeneration and memory impairment induced by neuroinflammation is enhanced in hypertension, and that can be protected by ACE inhibition.
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Affiliation(s)
- Ruby Goel
- Divisions of Pharmacology and Toxicology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Shahnawaz Ali Bhat
- Divisions of Pharmacology and Toxicology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - N Rajasekar
- Divisions of Pharmacology and Toxicology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), India
| | - Kashif Hanif
- Divisions of Pharmacology and Toxicology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), India
| | - Chandishwar Nath
- Divisions of Pharmacology and Toxicology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), India
| | - Rakesh Shukla
- Divisions of Pharmacology and Toxicology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research (AcSIR), India.
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Shukla P, Rao GM, Pandey G, Sharma S, Mittapelly N, Shegokar R, Mishra PR. Therapeutic interventions in sepsis: current and anticipated pharmacological agents. Br J Pharmacol 2014; 171:5011-31. [PMID: 24977655 PMCID: PMC4253453 DOI: 10.1111/bph.12829] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/29/2014] [Accepted: 06/13/2014] [Indexed: 12/14/2022] Open
Abstract
Sepsis is a clinical syndrome characterized by a multisystem response to a pathogenic assault due to underlying infection that involves a combination of interconnected biochemical, cellular and organ-organ interactive networks. After the withdrawal of recombinant human-activated protein C (rAPC), researchers and physicians have continued to search for new therapeutic approaches and targets against sepsis, effective in both hypo- and hyperinflammatory states. Currently, statins are being evaluated as a viable option in clinical trials. Many agents that have shown favourable results in experimental sepsis are not clinically effective or have not been clinically evaluated. Apart from developing new therapeutic molecules, there is great scope for for developing a variety of drug delivery strategies, such as nanoparticulate carriers and phospholipid-based systems. These nanoparticulate carriers neutralize intracorporeal LPS as well as deliver therapeutic agents to targeted tissues and subcellular locations. Here, we review and critically discuss the present status and new experimental and clinical approaches for therapeutic intervention in sepsis.
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Affiliation(s)
- Prashant Shukla
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - G Madhava Rao
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - Gitu Pandey
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - Shweta Sharma
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - Naresh Mittapelly
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
| | - Ranjita Shegokar
- Department of Pharmaceutics, Biopharmaceutics & NutriCosmetics, Institute of Pharmacy, Freie Universität BerlinBerlin, Germany
| | - Prabhat Ranjan Mishra
- Pharmaceutics Division, Preclinical South PCS 002/011, CSIR – Central Drug Research InstituteLucknow, India
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Re RN. A possible mechanism for the progression of chronic renal disease and congestive heart failure. ACTA ACUST UNITED AC 2015; 9:54-63. [PMID: 25539896 DOI: 10.1016/j.jash.2014.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 09/11/2014] [Accepted: 09/13/2014] [Indexed: 12/15/2022]
Abstract
Chronic neurologic diseases such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis, as well as various forms of chronic renal disease and systolic congestive heart failure, are among the most common progressive degenerative disorders encountered in medicine. Each disease follows a nearly relentless course, albeit at varying rates, driven by progressive cell dysfunction and drop-out. The neurologic diseases are characterized by the progressive spread of disease-causing proteins (prion-like proteins) from cell to cell. Recent evidence indicates that cell autonomous renin angiotensin systems operate in heart and kidney, and it is known that functional intracrine proteins can also spread between cells. This then suggests that certain progressive degenerative cardiovascular disorders such as forms of chronic renal insufficiency and systolic congestive heart failure result from dysfunctional renin angiotensin system intracrine action spreading in kidney or myocardium.
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Lee J, Kwon J, Lim MS, Lee HJ, Kim S, Lim SY, Chun W. 3,4,5-Trihydroxycinnamic acid increases heme-oxygenase-1 (HO-1) and decreases macrophage infiltration in LPS-induced septic kidney. Mol Cell Biochem 2014; 397:109-16. [DOI: 10.1007/s11010-014-2177-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 07/24/2014] [Indexed: 10/24/2022]
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Zhang W, Chen X, Huang L, Lu N, Zhou L, Wu G, Chen Y. Severe sepsis: Low expression of the renin-angiotensin system is associated with poor prognosis. Exp Ther Med 2014; 7:1342-1348. [PMID: 24940436 PMCID: PMC3991516 DOI: 10.3892/etm.2014.1566] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 01/24/2014] [Indexed: 11/14/2022] Open
Abstract
Severe sepsis has a high fatality rate, but no clinical indices for prognosis have been established. In recent years, the renin-angiotensin system (RAS) has received considerable attention. However, clinical data on RAS are inconsistent. Therefore, the aim of the present study was to assess the significance of RAS in the prognosis of sepsis. Blood samples were collected from patients, who met the diagnostic criteria of severe sepsis, on day 1 (D1) and 3 (D3). For each sample, the levels of angiotensin II (AngII), angiotensin-converting enzyme (ACE) and additional indices were measured. Patients were monitored for 28 days. On the D1 of inclusion, the average Acute Physiology and Chronic Health Evaluation II (APACHE II) score was 22.2 and the Sepsis-related Organ Failure Assessment (SOFA) score was 6.1. Logistic regression analysis revealed that mortality-associated variables included the APACHE II score on D1, the SOFA score on D1, high lactic acid levels on D3 and low AngII and ACE levels on D1 and D3. AngII levels (<86.1 ng/ml) on D1 had a sensitivity of 88.2% and specificity of 77.3% for predicting mortality. ACE levels (<39.2 ng/ml) on D1 had a sensitivity of 88.2% and specificity of 72.7% for predicting mortality. These two indices were better than the APACHE II and SOFA scores. Therefore, low expression levels of AngII and ACE are valuable in predicting the mortality of patients with severe sepsis.
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Affiliation(s)
- Wei Zhang
- Department of Emergency, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China ; Intensive Care Unit, Yantaishan Hospital, Yantai, Shandong 264001, P.R. China
| | - Xiaowei Chen
- Intensive Care Unit, Yantaishan Hospital, Yantai, Shandong 264001, P.R. China
| | - Ling Huang
- Intensive Care Unit, Yantaishan Hospital, Yantai, Shandong 264001, P.R. China
| | - Ning Lu
- Intensive Care Unit, Yantaishan Hospital, Yantai, Shandong 264001, P.R. China
| | - Lei Zhou
- Intensive Care Unit, Yantaishan Hospital, Yantai, Shandong 264001, P.R. China
| | - Guojie Wu
- Intensive Care Unit, Yantaishan Hospital, Yantai, Shandong 264001, P.R. China
| | - Yuguo Chen
- Department of Emergency, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
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Araujo M, Doi SQ, Palant CE, Nylen ES, Becker KL. Procalcitonin induced cytotoxicity and apoptosis in mesangial cells: implications for septic renal injury. Inflamm Res 2013; 62:887-94. [DOI: 10.1007/s00011-013-0646-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 06/14/2013] [Accepted: 07/01/2013] [Indexed: 01/30/2023] Open
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Panaro MA, Carofiglio V, Acquafredda A, Cavallo P, Cianciulli A. Anti-inflammatory effects of resveratrol occur via inhibition of lipopolysaccharide-induced NF-κB activation in Caco-2 and SW480 human colon cancer cells. Br J Nutr. 2012;108:1623-1632. [PMID: 22251620 DOI: 10.1017/s0007114511007227] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Resveratrol, a polyphenol abundantly found in grapes and red wine, exhibits beneficial health effects due to its anti-inflammatory properties. In the present study, we evaluated the effect of resveratrol on inflammatory responses induced by lipopolysaccharide (LPS) treatment of human intestinal Caco-2 and SW480 cell lines. In the LPS-treated intestinal cells, resveratrol dose-dependently inhibited the expression of inducible NO synthase (iNOS) mRNA as well as protein expression, resulting in a decreased production of NO. In addition, Toll-like receptor-4 expression was significantly diminished in LPS-stimulated cells after resveratrol pre-treatment. To investigate the mechanisms by which resveratrol reduces NO production and iNOS expression, we examined the activation of inhibitor of κB (IκB) in LPS-stimulated intestinal cells. Results demonstrated that resveratrol inhibited the phosphorylation, as well as the degradation, of the IκB complex. Overall, these results show that resveratrol is able to reduce LPS-induced inflammatory responses by intestinal cells, interfering with the activation of NF-κB-dependent molecular mechanisms.
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Prieto MC, González-Villalobos RA, Botros FT, Martin VL, Pagán J, Satou R, Lara LS, Feng Y, Fernandes FB, Kobori H, Casarini DE, Navar LG. Reciprocal changes in renal ACE/ANG II and ACE2/ANG 1-7 are associated with enhanced collecting duct renin in Goldblatt hypertensive rats. Am J Physiol Renal Physiol 2011; 300:F749-55. [PMID: 21209009 DOI: 10.1152/ajprenal.00383.2009] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Alterations in the balance between ANG II/ACE and ANG 1-7/ACE2 in ANG II-dependent hypertension could reduce the generation of ANG 1-7 and contribute further to increased intrarenal ANG II. Upregulation of collecting duct (CD) renin may lead to increased ANG II formation during ANG II-dependent hypertension, thus contributing to this imbalance. We measured ANG I, ANG II, and ANG 1-7 contents, angiotensin-converting enzyme (ACE) and ACE2 gene expression, and renin activity in the renal cortex and medulla in the clipped kidneys (CK) and nonclipped kidneys (NCK) of 2K1C rats. After 3 wk of unilateral renal clipping, systolic blood pressure and plasma renin activity increased in 2K1C rats (n = 11) compared with sham rats (n = 9). Renal medullary angiotensin peptide levels were increased in 2K1C rats [ANG I: (CK = 171 ± 4; NCK = 251 ± 8 vs. sham = 55 ± 3 pg/g protein; P < 0.05); ANG II: (CK = 558 ± 79; NCK = 328 ± 18 vs. sham = 94 ± 7 pg/g protein; P < 0.001)]; and ANG 1-7 levels decreased (CK = 18 ± 2; NCK = 19 ± 2 pg/g vs. sham = 63 ± 10 pg/g; P < 0.001). In renal medullas of both kidneys of 2K1C rats, ACE mRNA levels and activity increased but ACE2 decreased. In further studies, we compared renal ACE and ACE2 mRNA levels and their activities from chronic ANG II-infused (n = 6) and sham-operated rats (n = 5). Although the ACE mRNA levels did not differ between ANG II rats and sham rats, the ANG II rats exhibited greater ACE activity and reduced ACE2 mRNA levels and activity. Renal medullary renin activity was similar in the CK and NCK of 2K1C rats but higher compared with sham. Thus, the differential regulation of ACE and ACE2 along with the upregulation of CD renin in both the CK and NCK in 2K1C hypertensive rats indicates that they are independent of perfusion pressure and contribute to the altered content of intrarenal ANG II and ANG 1-7.
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Affiliation(s)
- Minolfa C Prieto
- Department of Physiology and Hypertension and Renal Center, Tulane University Health Sciences Center, New Orleans, Louisiana, USA.
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Hsing CH, Chou W, Wang JJ, Chen HW, Yeh CH. Propofol increases bone morphogenetic protein-7 and decreases oxidative stress in sepsis-induced acute kidney injury. Nephrol Dial Transplant 2010; 26:1162-72. [PMID: 20864551 DOI: 10.1093/ndt/gfq572] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Pro-inflammatory cytokines and free radicals damage renal tissue leading to acute kidney injury (AKI) during sepsis. Bone morphogenetic protein-7 (BMP-7) represses tumour necrosis factor (TNF)-α-induced inflammatory responses and protects kidney from injury. The sedative agent, propofol, has immunomodulatory and antioxidative properties. The present study investigated whether propofol could reduce AKI in caecal ligation and puncture (CLP) mice and the possible mechanism behind this. METHODS Mice were treated with propofol or saline immediately and 12 h after CLP surgery. Kidney injury, survival and cytokine expressions of CLP mice were observed 24 h after CLP surgery. In vitro, lipopolysaccharide (LPS)-stimulated rat mesangial cells (RMCs) or hydrogen peroxide (H(2)O(2))-exposed murine kidney epithelial cells (M1) were treated with propofol. The expression of BMP-7, TNF-α and monocyte chemotactic protein (MCP)-1 in CLP mice kidney, RMCs or M1 cells was determined by RT-PCR. Free radical generation and cell death of RMCs and M1 cells were analysed. Nuclear factor (NF)-κB and peroxisome proliferator-activated receptor (PPAR)-γ expressions in LPS-stimulated RMCs were determined by western blotting. RESULTS Propofol increased survival and ameliorated AKI in CLP mice. Propofol increased BMP-7 expression but decreased TNF-α and MCP-1 expressions in the kidney of CLP mice and LPS-stimulated RMCs. Propofol also inhibited free radical generation and cell death in LPS-stimulated RMCs and decreased the TNF-α expression and cell death in H(2)O(2)-exposed M1 cells. Moreover, propofol decreased NF-κB but increased PPAR-γ expression in LPS-stimulated RMCs. CONCLUSIONS Propofol treatment could protect kidney from sepsis-induced AKI by increasing BMP-7 expression, decreasing inflammatory cytokines and inhibiting oxidative stress.
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Affiliation(s)
- Chung-Hsi Hsing
- Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
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Maquigussa E, Arnoni CP, Cristovam PC, de Oliveira AS, Higa EMS, Boim MA. Escherichia coli lipopolysaccharide impairs the calcium signaling pathway in mesangial cells: role of angiotensin II receptors. Exp Biol Med (Maywood) 2010; 235:761-7. [DOI: 10.1258/ebm.2010.010006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Sepsis causes impaired vascular reactivity, hypotension and acute renal failure. The ability of the Escherichia coli endotoxin (lipopolysaccharide [LPS]) to impair agonist-induced contractility in mesangial cells, which contributes to LPS-induced renal dysfunction, was evaluated. Agonist-induced intracellular calcium ([Ca2+]i) mobilization was analyzed using angiotensin II (AngII). The effect of LPS on the levels of the renin–angiotensin system (RAS) components and the roles of vasodilatation-inducing molecules including AT2 receptor (AT2R) and nitric oxide (NO) in the cell reactivity were also evaluated. Confluent human mesangial cells (HMCs) were stimulated with LPS (0111-B4, 100 μg/mL). AngII-induced [Ca2+]i mobilization was measured by fluorometric analysis using Fura-2AM in the absence and presence of an AT2R antagonist (PD123319). The mRNA and protein levels for angiotensinogen, renin, angiotensin-converting enzyme, AT1R and AT2R were analyzed by realtime reverse transcriptase-polymerase chain reaction and Western blot, respectively. NO production was measured by the chemiluminescence method in the culture media after 24, 48 and 72 h of LPS incubation. After 24 h, LPS-stimulated HMCs displayed lower basal [Ca2+]i and an impaired response to AngII-induced rise in [Ca2+]i. LPS significantly increased AT2R levels, but did not cause significant alterations of RAS components. PD123319 restored both basal and AngII-induced [Ca2+]i peak, suggesting an involvement of AT2R in these responses. The expected increase in NO production was significant only after 72 h of LPS incubation and it was unaffected by PD123319. Results showed that LPS reduced the reactivity of HMCs to AngII and suggest that the vasodilatation induced by AT2R is a potential mediator of this response through a pathway independent of NO.
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Affiliation(s)
- Edgar Maquigussa
- Department of Medicine, Renal Division – Federal University of São Paulo, São Paulo, Brazil
| | - Carine P Arnoni
- Department of Medicine, Renal Division – Federal University of São Paulo, São Paulo, Brazil
| | - Priscila C Cristovam
- Department of Medicine, Renal Division – Federal University of São Paulo, São Paulo, Brazil
| | - Andrea S de Oliveira
- Department of Medicine, Renal Division – Federal University of São Paulo, São Paulo, Brazil
| | - Elisa M S Higa
- Department of Medicine, Renal Division – Federal University of São Paulo, São Paulo, Brazil
| | - Mirian A Boim
- Department of Medicine, Renal Division – Federal University of São Paulo, São Paulo, Brazil
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Salgado DR, Rocco JR, Silva E, Vincent JL. Modulation of the renin-angiotensin-aldosterone system in sepsis: a new therapeutic approach? Expert Opin Ther Targets 2010; 14:11-20. [PMID: 20001206 DOI: 10.1517/14728220903460332] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
IMPORTANCE OF THE FIELD Severe sepsis is characterized by relative hypotension associated with a high cardiac output, peripheral vasodilation, and organ dysfunction. The renin-angiotensin-aldosterone system (RAAS) is primarily activated to increase blood pressure, but recently potential pro-inflammatory effects of angiotensin II have attracted interest because of the reported association between angiotensin II levels and organ failure and mortality in sepsis. RAAS antagonists could represent a new therapeutic option in this setting. AREAS COVERED IN THIS REVIEW The role of RAAS activation in severe sepsis and septic shock, and the potential benefits (and risks) of using RAAS antagonists. WHAT THE READER WILL GAIN Insight into RAAS function in severe sepsis and the potential for RAAS inhibitors to be used as an adjunctive therapy in patients with severe sepsis, with discussion of promising results from animal models of sepsis. TAKE HOME MESSAGE Use of RAAS antagonists is an emerging therapeutic option in severe sepsis because these agents may reduce endothelial damage, organ failure, and mortality. However, timing of administration of RAAS antagonists is important because reduced RAAS function may contribute to refractive hypotension later on in septic shock and benefits of RAAS antagonists seem to be restricted to the early phases of sepsis.
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Affiliation(s)
- Diamantino Ribeiro Salgado
- Federal University of Rio de Janeiro, Clementino Fraga Filho University Hospital, Department of Internal Medicine, Cidade Universitària - Ilha do Fundão - Rio de Janeiro, Brazil.
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Abstract
PURPOSE OF REVIEW The renin-angiotensin system (RAS) has undergone continuous advancement since the initial identification of renin as a pressor agent. Traditionally considered a circulatory system, the RAS is now known to exist as a tissue system as well. Recently, the tissue RAS has been further categorized as intracellular and extracellular. Owing to the unique location, the intracellular RAS encompasses new components, such as cathepsin D and chymase, which participate in intracellular angiotensin (Ang) II synthesis. In this review, evidence of the intracellular RAS and the mechanism of Ang II synthesis in various cell types will be discussed. RECENT FINDINGS A physiological role for intracellular Ang II in vascular and cardiac cells has recently been demonstrated. Evidence of intracellular Ang II generation has been shown in several cell types, particularly cardiac, renal, and vascular. Importantly, intracellular synthesis of Ang II is more prominent in hyperglycemic conditions and generally involves angiotensin-converting enzyme-dependent and angiotensin-converting enzyme-independent mechanisms. SUMMARY There is significant diversity in the mechanism of intracellular synthesis of Ang II in various cell types and pathological conditions. These observations suggest that a therapeutic intervention to block the RAS should take into consideration the nature of the disorder and the cell type involved.
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Johannes T, Ince C, Klingel K, Unertl KE, Mik EG. Iloprost preserves renal oxygenation and restores kidney function in endotoxemia-related acute renal failure in the rat: . Crit Care Med 2009; 37:1423-32. [DOI: 10.1097/ccm.0b013e31819b5f4e] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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