Publications by authors named "Christian Steib"

Article Synopsis
  • Bacterial infections are a major issue for patients with cirrhosis, impacting their overall health due to their role in increasing morbidity and mortality.
  • This study investigates the role of cytosolic phospholipase A2 (cPLA2) in the activation of human Kupffer cells (HKCs) by gram-negative bacteria, specifically looking at how E. coli influences HKC activation through specific signaling pathways.
  • The findings suggest that cPLA2 is crucial for HKC activation in response to E. coli, linking its activity to the regulation by transcription factors STAT3 and RelB via the ERK and non-canonical NF-κB signaling pathways, potentially paving the way for therapeutic strategies in managing bacterial infections in cirrhotic patients
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Background: The number of complications in patients admitted for cirrhosis has increased over time. Portal hypertension is the driver of many complications of cirrhosis. TIPS placement is the most effective treatment of portal hypertension.

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Background: TIPS is an established treatment for portal hypertension. The aim was to analyze how patient selection for TIPS implantation and procedural aspects have changed over 25 years. Routinely collected demographic, clinical, laboratory, and procedural data of 835 patients treated with TIPS in a single center were used.

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Purpose: To compare the safety and outcome of transjugular versus percutaneous technique in recanalization of non-cirrhotic, non-malignant portal vein thrombosis.

Methods: We present a retrospective bicentric analysis of 21 patients with non-cirrhotic, non-malignant PVT, who were treated between 2016 and 2021 by interventional recanalization via different access routes (percutaneous [PT] vs. transjugular in transhepatic portosystemic shunt [TIPS] technique).

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Chronic liver diseases (CLDs) are complex diseases that cause long-term inflammation and infection, which in turn accelerate their development. The usage of albumin in patients with CLDs has been debated for years. Human serum albumin (HSA) plays a key role in immunomodulation during the process of CLDs.

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Septin 6 (SEPT6) is a member of the GTP‑binding protein family that is highly conserved in eukaryotes and regulates various biological functions, including filament dynamics, cytokinesis and cell migration. However, the functional importance of SEPT6 in hepatocellular carcinoma (HCC) is not completely understood. The present study aimed to investigate the expression levels and roles of SEPT6 in HCC, as well as the underlying mechanisms.

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Background: In the setting of a naïve papilla, biliary cannulation is a key step in successfully performing endoscopic retrograde cholangiography. Difficult biliary cannulation (DBC) is associated with an increased risk of post-ERCP pancreatitis and failure of the whole procedure.

Summary: Recommendations for biliary cannulation can be divided into (a) measures to reduce the likelihood of a difficult papilla situation a priori and (b) rescue techniques in case the endoscopist is actually facing DBC.

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Background & Aims: Acute decompensation (AD) of cirrhosis may present without acute-on-chronic liver failure (ACLF) (AD-No ACLF), or with ACLF (AD-ACLF), defined by organ failure(s). Herein, we aimed to analyze and characterize the precipitants leading to both of these AD phenotypes.

Methods: The multicenter, prospective, observational PREDICT study (NCT03056612) included 1,273 non-electively hospitalized patients with AD (No ACLF = 1,071; ACLF = 202).

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Background & Aims: Acute decompensation (AD) of cirrhosis is defined as the acute development of ascites, gastrointestinal hemorrhage, hepatic encephalopathy, infection or any combination thereof, requiring hospitalization. The presence of organ failure(s) in patients with AD defines acute-on-chronic liver failure (ACLF). The PREDICT study is a European, prospective, observational study, designed to characterize the clinical course of AD and to identify predictors of ACLF.

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Thromboxane (TX) A has been identified as an important intrahepatic vasoconstrictor upon Kupffer cell (KC) activation during infections such as spontaneous bacterial peritonitis (SBP). The study aimed to investigate the role of TLRs in the TXA increase in liver nonparenchymal cells and their related mechanisms. Here, we identified TLR-2 as a common pathway for different microbials: microbial lysates including Gram-positive bacteria, Gram-negative bacteria, and fungi all increased TXA secretion via activation of TLR-2 in human KCs, accompanied by increased expression and phosphorylation of Myd88-related pathway.

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Background: The benefit of ischemic postconditioning (IPostC) might be the throttled inflow following cold ischemia. The current study investigated advantage and mechanisms of IPostC in healthy and fatty rat livers.

Methods: Male SD rats received a high-fat diet to induce fatty livers.

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Background: Systemic inflammation and severe fibrosis can reduce serum zinc levels, while zinc supplementation is reported to improve the prognosis of patients with chronic liver disease (CLD).

Objectives: We aimed to investigate the clinical application of serum zinc in patients with CLD and the anti-infective mechanism of zinc supplementation.

Methods: Based on the serum zinc level, 149 CLD patients were divided into 3 groups and their clinical parameters were compared.

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Background: Spontaneous bacterial peritonitis (SBP) is a serious complication in patients with liver cirrhosis. In recent years, it has been postulated that the rate of multidrug-resistant organisms (MDROs) is increasing, especially in nosocomial SBP patients. Aim of the present work was to investigate this hypothesis and its possible clinical consequences.

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Objectives: Transjugular intrahepatic portosystemic shunt (TIPS) insertion is an established treatment to lower portal pressure. There are no obligatory evidence-based recommendations addressing procedure and anticoagulation. Therefore, a survey was performed to establish current practice at different German hospitals.

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Background & Aims: Acute-on-chronic liver failure (ACLF), which develops in patients with cirrhosis, is characterized by intense systemic inflammation and organ failure(s). Because systemic inflammation is energetically expensive, its metabolic costs may result in organ dysfunction/failure. Therefore, we aimed to analyze the blood metabolome in patients with cirrhosis, with and without ACLF.

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Liver cirrhosis is a life-threatening consequence of liver fibrosis. The aim of this study was to investigate the antifibrotic potential of clinically available vitamin D analogs compared to that of calcitriol in vitro and in vivo. Murine hepatic stellate cells, Kupffer cells, and human LX-2 cells were treated with vitamin D analogs, and the profibrotic behavior of these cells was studied.

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Introduction And Aim: Thromboxane (TX) A was identified as an important vasoconstrictor during Zymosan induced portal perfusion pressure (PP) increase. We aimed at investigating whether hepatic steatosis influences the extent of TXA-induced portal hypertension.

Materials And Methods: Sprague-Dawley rats were randomly divided into control and steatosis (induced by the special diet) groups.

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Background: Decreased organ function following liver resection is a major clinical issue. The practical method of ischemic postconditioning (IPostC) has been studied in heart diseases, but no data exist regarding fibrotic livers.

Aims: We aimed to determine whether IPostC could protect healthy, fibrotic, and cirrhotic livers from ischemia reperfusion injury (IRI).

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Introduction:  Proton pump inhibitors (PPI) are one of the most frequently prescribed drugs worldwide. In particular, in patients with liver cirrhosis prescription rates up to 78 % have been reported. PPI may be a risk factor for nosocomial infections, spontaneous bacterial peritonitis and onset of hepatic encephalopathy.

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This guideline provides evidence-based key recommendations for diagnosis and therapy of complications of liver cirrhosis and upgrades the 2011 version. An interdisciplinary team of medical experts and patient support groups developed the guideline following the AWMF recommendations for evidence based consensus guidelines. New chapters concerning diagnosis and therapy of hepatic encephalopathy were added.

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