scholarly journals Change in concentration of ammonia and other biochemical indicators in patients with new coronaviral infection

2021 ◽  
pp. 76-83
Author(s):  
L. B. Lazebnik ◽  
L. V. Tarasova ◽  
E. A. Komarova ◽  
Yu. V. Tsyganova ◽  
E. I. Busalaeva ◽  
...  
Keyword(s):  
Peripheral Blood ◽  
Acute Inflammation ◽  
Comparative Assessment ◽  
Alcoholic Fatty Liver ◽  
Coronavirus Infection ◽  
High Degree ◽  
The Relationship ◽  
Alcoholic Fatty Liver Disease ◽  
Hepatic Pathology

The article demonstrates the results of a study to study the comparative assessment of the concentration of ammonia in the peripheral blood of patients with a viral infection of COVID-19 against the background of previously existing hepatic pathology and without it. There was a correlation between peripheral blood hyperammonemia and an increase in the concentration of markers of acute inflammation. The relationship between a high degree of hyperammonemia and a severe course / death as a result of the development of a new coronavirus infection in the studied patients was traced. The role of the initial chronic hepatic pathology (including non-alcoholic fatty liver disease) as a factor in the unfavorable course of the new coronavirus infection is highlighted.

scholarly journals Microbiota, type 2 diabetes and non-alcoholic fatty liver disease: protocol of an observational study

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Benedetta M. Motta ◽  
Christoph Grander ◽  
Martin Gögele ◽  
Luisa Foco ◽  
Vladimir Vukovic ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Liver Disease ◽  
Fatty Liver Disease ◽  
Liver Stiffness ◽  
Alcoholic Fatty Liver ◽  
Study Participants ◽  
The Relationship ◽  
Alcoholic Fatty Liver Disease

Abstract Background Non-alcoholic fatty liver disease (NAFLD) is characterized by triglyceride accumulation in the hepatocytes in the absence of alcohol overconsumption, commonly associated with insulin resistance and obesity. Both NAFLD and type 2 diabetes (T2D) are characterized by an altered microbiota composition, however the role of the microbiota in NAFLD and T2D is not well understood. To assess the relationship between alteration in the microbiota and NAFLD while dissecting the role of T2D, we established a nested study on T2D and non-T2D individuals within the Cooperative Health Research In South Tyrol (CHRIS) study, called the CHRIS-NAFLD study. Here, we present the study protocol along with baseline and follow-up characteristics of study participants. Methods Among the first 4979 CHRIS study participants, 227 individuals with T2D were identified and recalled, along with 227 age- and sex-matched non-T2D individuals. Participants underwent ultrasound and transient elastography examination to evaluate the presence of hepatic steatosis and liver stiffness. Additionally, sampling of saliva and faeces, biochemical measurements and clinical interviews were carried out. Results We recruited 173 T2D and 183 non-T2D participants (78% overall response rate). Hepatic steatosis was more common in T2D (63.7%) than non-T2D (36.3%) participants. T2D participants also had higher levels of liver stiffness (median 4.8 kPa, interquartile range (IQR) 3.7, 5.9) than non-T2D participants (median 3.9 kPa, IQR 3.3, 5.1). The non-invasive scoring systems like the NAFLD fibrosis score (NFS) suggests an increased liver fibrosis in T2D (mean − 0.55, standard deviation, SD, 1.30) than non-T2D participants (mean − 1.30, SD, 1.17). Discussion Given the comprehensive biochemical and clinical characterization of study participants, once the bioinformatics classification of the microbiota will be completed, the CHRIS-NAFLD study will become a useful resource to further our understanding of the relationship between microbiota, T2D and NAFLD.

scholarly journals Relationship between triglyceride glucose index and the incidence of non-alcoholic fatty liver disease in the elderly: a retrospective cohort study in China

BMJ Open ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. e039804
Author(s):  
Chen Huanan ◽  
Li Sangsang ◽  
Adwoa Nyantakyiwaa Amoah ◽  
Bo Yacong ◽  
Chen Xuejiao ◽  
...  
Keyword(s):  
Cohort Study ◽  
Liver Disease ◽  
Fatty Liver ◽  
Fatty Liver Disease ◽  
The Elderly ◽  
Alcoholic Fatty Liver ◽  
Tyg Index ◽  
The Relationship ◽  
Alcoholic Fatty Liver Disease

ObjectiveNon-alcoholic fatty liver disease (NAFLD) is one of the major causes of liver-related diseases but relationship between triglyceride glucose (TyG) and NAFLD in the elderly is not reported yet. In this study, we investigated the role of TyG index for predicting the incidence of NAFLD in the elderly.Design and settingThis is a prospective cohort study in Henan, China, from 2011 to 2018.Participants and methodsIn total, 46 693 elderly who participated in a routine physical examination programme from 2011 to 2018 were included in this study. TyG index was calculated as ln (fasting triglyceride (mg/dL)×fasting plasma glucose (mg/dL)/2), while NAFLD was defined as hepatic steatosis after excluding other causes based on the results of abdominal ultrasonography; Cox regression model was performed to explore the relationship between TyG index and NAFLD. Also, mediation effect was used to analyse the role of the TyG index in WHtR (waist-to-height ratio) and NAFLD.ResultsDuring the 149 041 person-years follow-up, a total of 5660 NAFLD events occurred (3.80/100 person-years). After adjusting for potential confounding factors, quartiles 4 of TyG index significantly increased the incidence of NAFLD compared with quartile 1, the HRs and 95% CI were 1.314 (1.234 to 1.457). In addition, TyG index played a partial mediating role in the relationship between WHtR and NAFLD and indirect effect was 1.009 (1.006 to 1.011).ConclusionHigher TyG index was associated with higher risk of NAFLD in the aged, and therefore, TyG index may be a novel predictor for incidence of NAFLD. Further, regular examination and evaluation of the TyG index might be useful for controlling the occurrence of NAFLD.

scholarly journals Antiangiogenic Drugs in NASH: Evidence of a Possible New Therapeutic Approach

2021 ◽  
Vol 14 (10) ◽  
pp. 995
Author(s):  
Paola Orlandi ◽  
Anna Solini ◽  
Marta Banchi ◽  
Maurizia Rossana Brunetto ◽  
Dania Cioni ◽  
...  
Keyword(s):  
Liver Disease ◽  
Liver Disorder ◽  
Lifestyle Changes ◽  
Pharmacologic Therapy ◽  
Alcoholic Fatty Liver ◽  
Multiple Mechanism ◽  
Antiangiogenic Drugs ◽  
The Relationship ◽  
Alcoholic Fatty Liver Disease

Non-alcoholic fatty liver disease is the most common liver disorder worldwide, and its progressive form non-alcoholic steatohepatitis (NASH) is a growing cause of liver cirrhosis and hepatocellular carcinoma (HCC). Lifestyle changes, which are capable of improving the prognosis, are hard to achieve, whereas a pharmacologic therapy able to combine efficacy and safety is still lacking. Looking at the pathophysiology of various liver diseases, such as NASH, fibrosis, cirrhosis, and HCC, the process of angiogenesis is a key mechanism influencing the disease progression. The relationship between the worsening of chronic liver disease and angiogenesis may suggest a possible use of drugs with antiangiogenic activity as a tool to stop or slow the progression of the disorder. In this review, we highlight the available preclinical data supporting a role of known antiangiogenic drugs (e.g., sorafenib), or phytotherapeutic compounds with multiple mechanism of actions, including also antiangiogenic activities (e.g., berberine), in the treatment of NASH.

scholarly journals Function of nutraceuticals in the intestinal modulation of animals with non-alcoholic steatohepatitis (NASH): a systematic review

2021 ◽  
Vol 30 ◽  
pp. 8
Author(s):  
Pâmela Gracielle Fonseca ◽  
Fabiana de Faria Ghetti ◽  
Sônia Maria De Figueiredo ◽  
Nathália Sernizon Guimarães
Keyword(s):  
Intestinal Microbiota ◽  
Web Of Science ◽  
Dietary Practices ◽  
Alcoholic Fatty Liver ◽  
Positive Effects ◽  
Tomato Products ◽  
The Relationship ◽  
Alcoholic Fatty Liver Disease ◽  
Systematic Synthesis

Recent studies have observed the role of intestinal microbiota in the pathogenesis of non-alcoholic steatosis (NASH) and described the relationship between alterations in microbiota (called dysbiosis) with inadequate dietary practices and obesity. Through systematic synthesis this review aims to establish which nutraceuticals can be used in the intestinal modulation of animal models with NASH. Based on the search of MeSH and Decs descriptors, searches were performed on the PubMed, Web of Science and LILACS database using the keywords "Microbiota"; "Gastrointestinal Microbioma"; "Disbiosis"; "Bacterial Translocation"; "Non-alcoholic fatty liver disease"; "NAFLD", "Nutraceuticals" and "Dietetic Supplements". After the methodological screening, seven studies were included. A total of 246 male Sprangue Dawley rats with a mean age of four to eight weeks were evaluated. More than half of the studies (57.1%) used probiotics as nutraceuticals, 28.7% of the researches used tomato products and 14.3% used symbiotics. The results suggest positive effects of probiotics, tomato products and symbiotics in the composition and functions of microorganisms resident in the intestines of animals with NASH, micro according to different mechanisms. Modulation of intestinal microbiota may contribute to minimize the development and progression of NASH.

scholarly journals The Role of the Transsulfuration Pathway in Non-Alcoholic Fatty Liver Disease

2021 ◽  
Vol 10 (5) ◽  
pp. 1081
Author(s):  
Mikkel Parsberg Werge ◽  
Adrian McCann ◽  
Elisabeth Douglas Galsgaard ◽  
Dorte Holst ◽  
Anne Bugge ◽  
...  
Keyword(s):  
Liver Disease ◽  
Animal Models ◽  
Fatty Liver ◽  
Fatty Liver Disease ◽  
Alcoholic Fatty Liver ◽  
Precise Control ◽  
Transsulfuration Pathway ◽  
Global Population ◽  
Alcoholic Fatty Liver Disease

The prevalence of non-alcoholic fatty liver disease (NAFLD) is increasing and approximately 25% of the global population may have NAFLD. NAFLD is associated with obesity and metabolic syndrome, but its pathophysiology is complex and only partly understood. The transsulfuration pathway (TSP) is a metabolic pathway regulating homocysteine and cysteine metabolism and is vital in controlling sulfur balance in the organism. Precise control of this pathway is critical for maintenance of optimal cellular function. The TSP is closely linked to other pathways such as the folate and methionine cycles, hydrogen sulfide (H2S) and glutathione (GSH) production. Impaired activity of the TSP will cause an increase in homocysteine and a decrease in cysteine levels. Homocysteine will also be increased due to impairment of the folate and methionine cycles. The key enzymes of the TSP, cystathionine β-synthase (CBS) and cystathionine γ-lyase (CSE), are highly expressed in the liver and deficient CBS and CSE expression causes hepatic steatosis, inflammation, and fibrosis in animal models. A causative link between the TSP and NAFLD has not been established. However, dysfunctions in the TSP and related pathways, in terms of enzyme expression and the plasma levels of the metabolites (e.g., homocysteine, cystathionine, and cysteine), have been reported in NAFLD and liver cirrhosis in both animal models and humans. Further investigation of the TSP in relation to NAFLD may reveal mechanisms involved in the development and progression of NAFLD.

scholarly journals Target Therapies for NASH/NAFLD: From the Molecular Aspect to the Pharmacological and Surgical Alternatives

2021 ◽  
Vol 11 (6) ◽  
pp. 499
Author(s):  
Michele Finotti ◽  
Maurizio Romano ◽  
Pasquale Auricchio ◽  
Michele Scopelliti ◽  
Marco Brizzolari ◽  
...  
Keyword(s):  
Liver Transplantation ◽  
Fatty Liver Disease ◽  
Hepatic Disease ◽  
Lifestyle Modifications ◽  
Alcoholic Fatty Liver ◽  
Target Therapies ◽  
Chronic Hepatic Disease ◽  
The Impact ◽  
Alcoholic Fatty Liver Disease

Non-alcoholic fatty liver disease represents an increasing cause of chronic hepatic disease in recent years. This condition usually arises in patients with multiple comorbidities, the so-called metabolic syndrome. The therapeutic options are multiple, ranging from lifestyle modifications, pharmacological options, to liver transplantation in selected cases. The choice of the most beneficial one and their interactions can be challenging. It is mandatory to stratify the patients according to the severity of their disease to tailor the available treatments. In our contribution, we review the most recent pharmacological target therapies, the role of bariatric surgery, and the impact of liver transplantation on the NAFLD outcome.

scholarly journals Targeting Autophagy to Counteract Obesity-Associated Oxidative Stress

Antioxidants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 102
Author(s):  
Federico Pietrocola ◽  
José Manuel Bravo-San Pedro
Keyword(s):  
Oxidative Stress ◽  
Oxygen Species ◽  
Alcoholic Fatty Liver ◽  
Redox Biology ◽  
Obesity Therapy ◽  
Treatment Of Obesity ◽  
Novel Therapeutic Strategies ◽  
Alcoholic Fatty Liver Disease ◽  
Shed Light

Reactive oxygen species (ROS) operate as key regulators of cellular homeostasis within a physiological range of concentrations, yet they turn into cytotoxic entities when their levels exceed a threshold limit. Accordingly, ROS are an important etiological cue for obesity, which in turn represents a major risk factor for multiple diseases, including diabetes, cardiovascular disorders, non-alcoholic fatty liver disease, and cancer. Therefore, the implementation of novel therapeutic strategies to improve the obese phenotype by targeting oxidative stress is of great interest for the scientific community. To this end, it is of high importance to shed light on the mechanisms through which cells curtail ROS production or limit their toxic effects, in order to harness them in anti-obesity therapy. In this review, we specifically discuss the role of autophagy in redox biology, focusing on its implication in the pathogenesis of obesity. Because autophagy is specifically triggered in response to redox imbalance as a quintessential cytoprotective mechanism, maneuvers based on the activation of autophagy hold promises of efficacy for the prevention and treatment of obesity and obesity-related morbidities.

scholarly journals The Role of Oxidative Stress in NAFLD–NASH–HCC Transition—Focus on NADPH Oxidases

Biomedicines ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 687
Author(s):  
Daniela Gabbia ◽  
Luana Cannella ◽  
Sara De De Martin
Keyword(s):  
Oxidative Stress ◽  
Liver Disease ◽  
Fatty Liver ◽  
Fatty Liver Disease ◽  
Current Knowledge ◽  
Mechanisms Of Action ◽  
Nadph Oxidases ◽  
Alcoholic Fatty Liver ◽  
Alcoholic Fatty Liver Disease

A peculiar role for oxidative stress in non-alcoholic fatty liver disease (NAFLD) and its transition to the inflammatory complication non-alcoholic steatohepatitis (NASH), as well as in its threatening evolution to hepatocellular carcinoma (HCC), is supported by numerous experimental and clinical studies. NADPH oxidases (NOXs) are enzymes producing reactive oxygen species (ROS), whose abundance in liver cells is closely related to inflammation and immune responses. Here, we reviewed recent findings regarding this topic, focusing on the role of NOXs in the different stages of fatty liver disease and describing the current knowledge about their mechanisms of action. We conclude that, although there is a consensus that NOX-produced ROS are toxic in non-neoplastic conditions due to their role in the inflammatory vicious cycle sustaining the transition of NAFLD to NASH, their effect is controversial in the neoplastic transition towards HCC. In this regard, there are indications of a differential effect of NOX isoforms, since NOX1 and NOX2 play a detrimental role, whereas increased NOX4 expression appears to be correlated with better HCC prognosis in some studies. Further studies are needed to fully unravel the mechanisms of action of NOXs and their relationships with the signaling pathways modulating steatosis and liver cancer development.

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