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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Autophagy in Hepatic Steatosis: A Structured Review

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Author(s):
Ramos, Vitor de Miranda [1] ; Kowaltowski, Alicia J. [1] ; Kakimoto, Pamela A. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Quim, Dept Bioquim, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Review article
Source: FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY; v. 9, APR 15 2021.
Web of Science Citations: 0
Abstract

Steatosis is the accumulation of neutral lipids in the cytoplasm. In the liver, it is associated with overeating and a sedentary lifestyle, but may also be a result of xenobiotic toxicity and genetics. Non-alcoholic fatty liver disease (NAFLD) defines an array of liver conditions varying from simple steatosis to inflammation and fibrosis. Over the last years, autophagic processes have been shown to be directly associated with the development and progression of these conditions. However, the precise role of autophagy in steatosis development is still unclear. Specifically, autophagy is necessary for the regulation of basic metabolism in hepatocytes, such as glycogenolysis and gluconeogenesis, response to insulin and glucagon signaling, and cellular responses to free amino acid contents. Also, genetic knockout models for autophagy-related proteins suggest a critical relationship between autophagy and hepatic lipid metabolism, but some results are still ambiguous. While autophagy may seem necessary to support lipid oxidation in some contexts, other evidence suggests that autophagic activity can lead to lipid accumulation instead. This structured literature review aims to critically discuss, compare, and organize results over the last 10 years regarding rodent steatosis models that measured several autophagy markers, with genetic and pharmacological interventions that may help elucidate the molecular mechanisms involved. (AU)

FAPESP's process: 20/06970-5 - Mitochondrial ion transporters as sensors and regulators in energy metabolism
Grantee:Alicia Juliana Kowaltowski
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/07937-8 - Redoxome - Redox Processes in Biomedicine
Grantee:Ohara Augusto
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 19/18402-4 - Effects of mitochondrial calcium transport regulation in autophagic process of hepatocytes
Grantee:Vitor de Miranda Ramos
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 15/25862-0 - Hepatic bioenergetics and redox signaling in obesity murine model: integrative analysis of nutritional, hormonal, and inflammatory stimuli
Grantee:Pâmela Aiako Hypólito Brito Kakimoto
Support type: Scholarships in Brazil - Doctorate (Direct)