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World J Gastroenterol

Title:		Periodontal treatment and microbiome-targeted therapy in management of periodontitis-related nonalcoholic fatty liver disease with oral and gut dysbiosis
Author(s):		Kuraji R; Shiba T; Dong TS; Numabe Y; Kapila YL;
Address:		"Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo 102-0071, Japan. Department of Orofacial Sciences, University of California San Francisco, San Francisco, CA 94143, United States. r-kuraji@tky.ndu.ac.jp. Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA 02115, United States. Department of Periodontology, Tokyo Medical and Dental University, Tokyo 113-8549, Japan. The Vatche and Tamar Manoukian Division of Digestive Diseases, University of California Los Angeles, Department of Medicine, University of California David Geffen School of Medicine, Los Angeles, CA 90095, United States. Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo 102-8159, Japan. Department of Orofacial Sciences, University of California San Francisco, San Francisco, CA 94143, United States. Sections of Biosystems and Function and Periodontics, Professor and Associate Dean of Research, Felix and Mildred Yip Endowed Chair in Dentistry, University of California Los Angeles, Los Angeles, CA 90095, United States"
Journal Title:		World J Gastroenterol
Year:		2023
Volume:		29
Issue:		6
Page Number:		967 - 996
DOI:		10.3748/wjg.v29.i6.967
ISSN/ISBN:		2219-2840 (Electronic) 1007-9327 (Print) 1007-9327 (Linking)
Abstract:		"A growing body of evidence from multiple areas proposes that periodontal disease, accompanied by oral inflammation and pathological changes in the microbiome, induces gut dysbiosis and is involved in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). A subgroup of NAFLD patients have a severely progressive form, namely nonalcoholic steatohepatitis (NASH), which is characterized by histological findings that include inflammatory cell infiltration and fibrosis. NASH has a high risk of further progression to cirrhosis and hepatocellular carcinoma. The oral microbiota may serve as an endogenous reservoir for gut microbiota, and transport of oral bacteria through the gastro-intestinal tract can set up a gut microbiome dysbiosis. Gut dysbiosis increases the production of potential hepatotoxins, including lipopolysaccharide, ethanol, and other volatile organic compounds such as acetone, phenol and cyclopentane. Moreover, gut dysbiosis increases intestinal permeability by disrupting tight junctions in the intestinal wall, leading to enhanced translocation of these hepatotoxins and enteric bacteria into the liver through the portal circulation. In particular, many animal studies support that oral administration of Porphyromonas gingivalis, a typical periodontopathic bacterium, induces disturbances in glycolipid metabolism and inflammation in the liver with gut dysbiosis. NAFLD, also known as the hepatic phenotype of metabolic syndrome, is strongly associated with metabolic complications, such as obesity and diabetes. Periodontal disease also has a bidirectional relationship with metabolic syndrome, and both diseases may induce oral and gut microbiome dysbiosis with insulin resistance and systemic chronic inflammation cooperatively. In this review, we will describe the link between periodontal disease and NAFLD with a focus on basic, epidemiological, and clinical studies, and discuss potential mechanisms linking the two diseases and possible therapeutic approaches focused on the microbiome. In conclusion, it is presumed that the pathogenesis of NAFLD involves a complex crosstalk between periodontal disease, gut microbiota, and metabolic syndrome. Thus, the conventional periodontal treatment and novel microbiome-targeted therapies that include probiotics, prebiotics and bacteriocins would hold great promise for preventing the onset and progression of NAFLD and subsequent complications in patients with periodontal disease"
Keywords:		Animals Dysbiosis/microbiology Fibrosis Inflammation/pathology Liver/pathology *Metabolic Syndrome/complications *Microbiota *Non-alcoholic Fatty Liver Disease/pathology *Periodontitis/therapy/complications/metabolism Intestines Dysbiosis Metabolic syndro;
Notes:		"MedlineKuraji, Ryutaro Shiba, Takahiko Dong, Tien S Numabe, Yukihiro Kapila, Yvonne L eng Review 2023/02/28 World J Gastroenterol. 2023 Feb 14; 29(6):967-996. doi: 10.3748/wjg.v29.i6.967"