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Haderer M, Neubert P, Rinner E, Scholtis A, Broncy L, Gschwendtner H, Kandulski A, Pavel V, Mehrl A, Brochhausen C, Schlosser S, Gülow K, Kunst C, Müller M. Novel pathomechanism for spontaneous bacterial peritonitis: disruption of cell junctions by cellular and bacterial proteases. Gut 2022; 71:580-592. [PMID: 33707230 PMCID: PMC8862089 DOI: 10.1136/gutjnl-2020-321663] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 02/17/2021] [Accepted: 02/24/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Spontaneous bacterial peritonitis (SBP) is a life-threatening complication of liver cirrhosis with a 1-year mortality of 66%. Bacterial translocation (BT) from the intestine to the mesenteric lymph nodes is crucial for the pathogenesis of SBP. DESIGN Since BT presupposes a leaky intestinal epithelium, the integrity of mucus and epithelial cell junctions (E-cadherin and occludin) was examined in colonic biopsies from patients with liver cirrhosis and controls. SBP-inducing Escherichia coli (E. coli) and Proteus mirabilis (P. mirabilis) were isolated from ascites of patients with liver cirrhosis and co-cultured with Caco-2 cells to characterise bacteria-to-cell effects. RESULTS SBP-derived E. coli and P. mirabilis led to a marked reduction of cell-to-cell junctions in a dose-dependent and time-dependent manner. This effect was enhanced by a direct interaction of live bacteria with epithelial cells. Degradation of occludin is mediated via increased ubiquitination by the proteasome. Remarkably, a novel bacterial protease activity is of pivotal importance for the cleavage of E-cadherin. CONCLUSION Patients with liver cirrhosis show a reduced thickness of colonic mucus, which allows bacteria-to-epithelial cell contact. Intestinal bacteria induce degradation of occludin by exploiting the proteasome of epithelial cells. We identified a novel bacterial protease activity of patient-derived SBP-inducing bacteria, which is responsible for the cleavage of E-cadherin structures. Inhibition of this protease activity leads to stabilisation of cell junctions. Thus, targeting these mechanisms by blocking the ubiquitin-proteasome system and/or the bacterial protease activity might interfere with BT and constitute a novel innovative therapeutic strategy to prevent SBP in patients with liver cirrhosis.
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Affiliation(s)
- Marika Haderer
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Philip Neubert
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Eva Rinner
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Annika Scholtis
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Lucile Broncy
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Heidi Gschwendtner
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Arne Kandulski
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Vlad Pavel
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Alexander Mehrl
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Christoph Brochhausen
- Department of Pathology, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Sophie Schlosser
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Karsten Gülow
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Claudia Kunst
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
| | - Martina Müller
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious diseases, University Hospital Regensburg, Regensburg, Bavaria, Germany
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Jacques RDOC, Massignan LDS, Winkler MS, Balbinot RS, Balbinot SS, Soldera J. ACUTE-ON-CHRONIC LIVER FAILURE IS INDEPENDENTLY ASSOCIATED WITH LOWER SURVIVAL IN PATIENTS WITH SPONTANEOUS BACTERIAL PERITONITIS. ARQUIVOS DE GASTROENTEROLOGIA 2021; 58:344-352. [PMID: 34705969 DOI: 10.1590/s0004-2803.202100000-58] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 04/12/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Spontaneous bacterial peritonitis (SBP) is a decompensation of cirrhosis with an in-hospital mortality ranging from 20% to 40%. OBJECTIVE The purpose of this study is to analyze if EASL-CLIF definition of acute-on-chronic liver failure (ACLF) is able to predict mortality in cirrhotic patients with SBP. METHODS Historical cohort study conducted in a public tertiary care teaching hospital. Data from medical records from January 2009 to July 2016 were obtained by searching the hospital electronic database for samples of ascites collected in the period. Electronic and physical medical records were analyzed and patients were included if they were over 18-years old, with cirrhosis and an ascites fluid compatible with SBP: 69 patients were included. Liver-specific scores were calculated and Kaplan-Meier survival analysis was used for univariate analysis and a stepwise approach to the Cox regression for multivariate analysis. RESULTS All cause mortality was 44%, 56.5% and 74% for 28-, 90- and 365-day, respectively. The prevalence of ACLF was 58%. Of these, 65% grade 1, 17.5% grade 2 and 17.5% grade 3. In multivariate analysis, the use of proton-pump inhi-bitors, alanine transaminase lower than 40 U/L, hemoglobin higher than 9 g/dL, absence of ACLF and lower CLIF-SOFA and MELD scores were independently associated with higher survival for both 28- and 90-day interval. CONCLUSION The presence of ACLF and higher CLIF-SOFA scores were independently associated with higher 28- and 90-day mortality in cirrhotic patients admitted due to SBP.
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Affiliation(s)
- Raquel de Oliveira Coberllini Jacques
- Hospital Geral, Medicina Interna, Caxias do Sul, RS, Brasil.,Universidade Federal de Santa Catarina, Departamento de Gastroenterologia, Florianópolis, SC, Brasil
| | - Lais da Silva Massignan
- Hospital Geral, Medicina Interna, Caxias do Sul, RS, Brasil.,Universidade Federal de Santa Catarina, Departamento de Gastroenterologia Clínica, Florianópolis, SC, Brasil
| | | | - Rafael Sartori Balbinot
- Universidade Federal de Ciências da Saúde de Porto Alegre, Medicina Interna, Porto Alegre, RS, Brasil
| | - Silvana Sartori Balbinot
- Universidade de Caxias do Sul, Departamento de Gastroenterologia Clínica, Caxias do Sul, RS, Brasil.,Universidade de São Paulo, Departamento de Gastroenterologia, São Paulo, SP, Brasil
| | - Jonathan Soldera
- Universidade de Caxias do Sul, Departamento de Gastroenterologia Clínica, Caxias do Sul, RS, Brasil.,Universidade Federal de Ciências da Saúde de Porto Alegre, Departamento de Hepatologia, Programa de Pós-Graduação em Medicina: Hepatologia, Porto Alegre, RS, Brasil
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Bakulin IG, Oganezova IA, Skalinskaya MI, Skazyvaeva EV. Liver cirrosis and complication risk management. TERAPEVT ARKH 2021; 93:963-968. [DOI: 10.26442/00403660.2021.08.200917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 09/04/2021] [Indexed: 11/22/2022]
Abstract
Liver cirrhosis (LC) takes the main place in the structure of the pathology of the digestive system in terms of the frequency of mortality, as well as in the development of fatal and poorly controlled complications, which requires the search for effective methods for preventing the progression of the disease and the development of complications. The article provides updated information on the role of the intestinal microbiota, as well as endotoxemia and increased intestinal permeability syndromes in the pathophysiology of LC and its complications. The results of recent meta-analyses of the impact of dysbiotic disorders on the prognosis of the LC and the options for their correction are presented. Understanding of the significance of involvement of gut microbiota in the pathogenesis of LC has become one of the levers of management of the risks of complications of LC. In this case, the livergut axis can be considered to be the leading link to the formation of most of the main complications of LC.
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Terres AZ, Balbinot RS, Muscope ALF, Longen ML, Schena B, Cini BT, Luis Rost G, Balensiefer JIL, Eberhardt LZ, Balbinot RA, Balbinot SS, Soldera J. Evidence-based protocol for diagnosis and treatment of hepatorenal syndrome is independently associated with lower mortality. GASTROENTEROLOGIA Y HEPATOLOGIA 2021; 45:25-39. [PMID: 33746028 DOI: 10.1016/j.gastrohep.2021.02.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/22/2021] [Accepted: 02/05/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hepatorenal syndrome (HRS) is the deadliest complication of cirrhosis. The purpose of this study is to analyze if the use of a protocol for HRS is associated with higher survival in these patients. METHODS An evidence-based protocol for the diagnosis and treatment of HRS was instituted in 2013. Data from medical records from 2010 to 2016 were obtained by searching the hospital database for patients who received terlipressin, in the three years before and after the institution of the protocol. Data were reviewed to confirm the diagnosis of HRS and multiple variables were collected. Liver-specific scores were calculated and a stepwise Cox regression approach was used for univariate and multivariate analysis. RESULTS The study included 46 patients, 20 from the pre-protocol period and 26 from the post-protocol period. Respectively, mortality at 30 days, 90 days and 365 days was 75%, 75% and 90% for the pre-protocol period, and 61%, 69% and 80% for the post-protocol period. In the multivariate analysis, an aspartate aminotransferase (AST) of <40U/L, the pre-protocol period and higher Child-Turcotte-Pugh scores were associated with higher 30-day and 90-day mortality. The total mean dose of terlipressin and human albumin used per patient was reduced from 27mg to 22mg and from 236g to 144g, respectively, after the institution of the protocol. This was not associated with higher mortality. CONCLUSION The use of an evidence-based protocol for the treatment of HRS translated into a higher survival. The authors suggest that the use of evidence-based protocols for the diagnosis and treatment of HRS could reduce cost and mortality in tertiary hospitals.
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Affiliation(s)
- Alana Zulian Terres
- Internal Medicine, Hospital Pompeia, Caxias do Sul, RS, Brazil; Gastroenterology, Hospital Geral de Caxias do Sul (RS), Brazil
| | - Rafael Sartori Balbinot
- Residency in Internal Medicine, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil; Faculty of Medicine, Universidade de Caxias do Sul, Caxias do Sul, RS, Brazil
| | | | | | - Bruna Schena
- Faculty of Medicine, Universidade de Caxias do Sul, Caxias do Sul, RS, Brazil
| | - Bruna Teston Cini
- Faculty of Medicine, Universidade de Caxias do Sul, Caxias do Sul, RS, Brazil
| | - Gilberto Luis Rost
- Faculty of Medicine, Universidade de Caxias do Sul, Caxias do Sul, RS, Brazil
| | | | | | - Raul Angelo Balbinot
- Clinical Gastroenterology, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil; Department of Gastroenterology, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Silvana Sartori Balbinot
- Clinical Gastroenterology, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil; Department of Gastroenterology, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Jonathan Soldera
- Clinical Gastroenterology, Universidade de Caxias do Sul (UCS), Caxias do Sul, RS, Brazil; Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
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