scholarly journals Spontaneous Complete Necrosis of Hepatocellular Carcinoma: Possible Immune System Hypothesis

2014 ◽  
Author(s):  
Kassir
Keyword(s):  
Hepatocellular Carcinoma ◽  
Immune System ◽  
Complete Necrosis

The interplay between gut microbiota and the immune system in liver transplant recipients and its role in infections

2021 ◽  
Author(s):  
Giuseppe Ancona ◽  
Laura Alagna ◽  
Andrea Lombardi ◽  
Emanuele Palomba ◽  
Valeria Castelli ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Immune System ◽  
Liver Disease ◽  
Gut Microbiota ◽  
Liver Transplant ◽  
Bacterial Infections ◽  
Multidrug Resistant ◽  
Transplant Recipients ◽  
Liver Transplant Recipients

Liver transplantation (LT) is a life-saving strategy for patients with end-stage liver disease, hepatocellular carcinoma and acute liver failure. LT success can be hampered by several short-term and long-term complications. Among them, bacterial infections, especially due to multidrug-resistant germs, are particularly frequent with a prevalence between 19 and 33% in the first 100 days after transplantation. In the last decades, a number of studies have highlighted how gut microbiota (GM) is involved in several essential functions to ensure the intestinal homeostasis, becoming one of the most important virtual metabolic organs. GM works through different axes with other organs, and the gut-liver axis is among the most relevant and investigated ones. Any alteration or disruption of GM is defined as dysbiosis. Peculiar phenotypes of GM dysbiosis have been associated to several liver conditions and complications, such as chronic hepatitis, fatty liver disease, cirrhosis and hepatocellular carcinoma. Moreover, there is growing evidence of the crucial role of GM in shaping the immune response, both locally and systemically, against pathogens. This paves the way to the manipulation of GM as a therapeutic instrument to modulate the infectious risk and outcome. In this minireview we provide an overview of the current understanding on the interplay between gut microbiota and the immune system in liver transplant recipients and the role of the former in infections.

Roles of the Immune System in the Development and Progression of Hepatocellular Carcinoma

Liver Cancers ◽  
2018 ◽  
pp. 23-37
Author(s):  
João Maurício ◽  
Helen Reeves ◽  
Caroline L. Wilson
Keyword(s):  
Hepatocellular Carcinoma ◽  
Immune System

The role of the immune system in the control of hepatocellular carcinoma

2004 ◽  
Vol 16 (12) ◽  
pp. 1257-1260 ◽  
Author(s):  
James P O'Beirne ◽  
Phillip M Harrison
Keyword(s):  
Hepatocellular Carcinoma ◽  
Immune System

Spontaneous regression of hepatocellular carcinoma with complete necrosis: case report

2005 ◽  
Vol 30 (6) ◽  
pp. 734-737 ◽  
Author(s):  
H. Ohta ◽  
Y. Sakamoto ◽  
H. Ojima ◽  
Y. Yamada ◽  
T. Hibi ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Case Report ◽  
Spontaneous Regression ◽  
Complete Necrosis

scholarly journals The Epigenetic Modulation of Cancer and Immune Pathways in Hepatitis B Virus-Associated Hepatocellular Carcinoma: The Influence of HBx and miRNA Dysregulation

2021 ◽  
Vol 12 ◽  
Author(s):  
Kurt Sartorius ◽  
Ping An ◽  
Cheryl Winkler ◽  
Anil Chuturgoon ◽  
Xiaodong Li ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Immune System ◽  
Hepatitis B Virus ◽  
Hepatitis B ◽  
Hbv Infection ◽  
Host Genome ◽  
Epigenetic Changes ◽  
Epigenetic Change ◽  
Genome Expression ◽  
B Virus

Hepatitis B virus (HBV)-associated hepatocellular carcinoma (HBV-HCC) pathogenesis is fueled by persistent HBV infection that stealthily maintains a delicate balance between viral replication and evasion of the host immune system. HBV is remarkably adept at using a combination of both its own, as well as host machinery to ensure its own replication and survival. A key tool in its arsenal, is the HBx protein which can manipulate the epigenetic landscape to decrease its own viral load and enhance persistence, as well as manage host genome epigenetic responses to the presence of viral infection. The HBx protein can initiate epigenetic modifications to dysregulate miRNA expression which, in turn, can regulate downstream epigenetic changes in HBV-HCC pathogenesis. We attempt to link the HBx and miRNA induced epigenetic modulations that influence both the HBV and host genome expression in HBV-HCC pathogenesis. In particular, the review investigates the interplay between CHB infection, the silencing role of miRNA, epigenetic change, immune system expression and HBV-HCC pathogenesis. The review demonstrates exactly how HBx-dysregulated miRNA in HBV-HCC pathogenesis influence and are influenced by epigenetic changes to modulate both viral and host genome expression. In particular, the review identifies a specific subset of HBx induced epigenetic miRNA pathways in HBV-HCC pathogenesis demonstrating the complex interplay between HBV infection, epigenetic change, disease and immune response. The wide-ranging influence of epigenetic change and miRNA modulation offers considerable potential as a therapeutic option in HBV-HCC.

scholarly journals Lymphocyte Landscape after Chronic Hepatitis C Virus (HCV) Cure: The New Normal

2020 ◽  
Vol 21 (20) ◽  
pp. 7473
Author(s):  
Alip Ghosh ◽  
Sara Romani ◽  
Shyam Kottilil ◽  
Bhawna Poonia
Keyword(s):  
Hepatocellular Carcinoma ◽  
Immune System ◽  
Virologic Response ◽  
Viral Clearance ◽  
Liver Pathology ◽  
Direct Acting Antiviral ◽  
Chronic Hcv ◽  
Direct Acting ◽  
Immune Defects ◽  
The Impact

Chronic HCV (CHC) infection is the only chronic viral infection for which curative treatments have been discovered. These direct acting antiviral (DAA) agents target specific steps in the viral replication cycle with remarkable efficacy and result in sustained virologic response (SVR) or cure in high (>95%) proportions of patients. These treatments became available 6–7 years ago and it is estimated that their real impact on HCV related morbidity, including outcomes such as cirrhosis and hepatocellular carcinoma (HCC), will not be known for the next decade or so. The immune system of a chronically infected patient is severely dysregulated and questions remain regarding the immune system’s capacity in limiting liver pathology in a cured individual. Another important consequence of impaired immunity in patients cleared of HCV with DAA will be the inability to generate protective immunity against possible re-infection, necessitating retreatments or developing a prophylactic vaccine. Thus, the impact of viral clearance on restoring immune homeostasis is being investigated by many groups. Among the important questions that need to be answered are how much the immune system normalizes with cure, how long after viral clearance this recalibration occurs, what are the consequences of persisting immune defects for protection from re-infection in vulnerable populations, and does viral clearance reduce liver pathology and the risk of developing hepatocellular carcinoma in individuals cured with these agents. Here, we review the recent literature that describes the defects present in various lymphocyte populations in a CHC patient and their status after viral clearance using DAA treatments.

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