Decrease of Pericytes is Associated With Liver Disease Caused by Ligature‐Induced Periodontitis in Rats

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 63%

Section: Methodsmentioning

confidence: 99%

“…The livers of the rats were collected from the left lobe and routinely processed according to Vasconcelos et al …”

Section: Methodsmentioning

confidence: 99%

“…Periodontitis not only causes injury to the periodontal tissues but also damages other tissues such as: articulate, renal, cardiac, and hepatic …”

mentioning

confidence: 99%

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Periodontitis causes abnormalities in the liver of rats

Vasconcelos

Silva

et al. 2018

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High‐fat diet aggravates the liver disease caused by periodontitis in rats

Andrade

França

Pessoa

et al. 2019

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Background: Periodontitis is an inflammatory disease that causes periodontium and hepatic alterations. Liver disease is related to the intake of foods rich in fat and sugars (high-fat). The objective of this study was to evaluate whether a high-fat diet can aggravate the liver disease caused by ligature-induced periodontitis in rats.Methods: Twenty-one female rats were divided into three groups (n = 7 in each group): control; periodontitis (periodontitis induced with ligature) and high-fat + periodontitis (received hypercaloric diet and induction of periodontitis). The rats were submitted to the analyses of the following periodontal parameters: gingival bleeding index (GBI), probing pocket depth (PPD), tooth mobility (TM), and alveolar bone height. In the hepatic tissue, the levels of malondialdehyde (MDA), glutathione (GSH), total cholesterol, and myeloperoxidase activity (MPO) were measured. Liver samples were also histopathologically evaluated. Finally, blood levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), glucose, total cholesterol, cholesterol high-density lipoprotein (HDL), and uric acid were measured. Results:The high-fat + periodontitis group presented an increase in the steatosis score (P < 0.05) for the histopathologic evaluation, when compared with the periodontitis group. MDA, uric acid and ALT levels also increased, whereas GSH and HDL levels showed lower values. Conclusion:A high-fat diet aggravates the liver disease caused by ligature-induced periodontitis in rats.

Periodontal disease may induce liver fibrosis in an experimental study on Wistar rats

Meşter

Ciobanu

Taulescu

et al. 2019

Background The aim was to assess the effects of periodontal disease in promoting liver fibrosis in a rat model of ligature‐induced periodontitis. Methods Twenty‐four Wistar rats were divided into four groups: control (CTRL), experimental periodontitis group at day 7 (PER7), at day 14 (PER14), at day 21 (PER21). Experimental periodontitis was induced by the placement of a silk ligature around mandibular incisors. The following parameters were assessed: gingival index, tooth mobility; liver status, and portal vein caliber by ultrasound examination; bone retraction, bone mineral density (BMD), bone volume/tissue volume (BV/TV) by micro‐CT analysis; aspartate aminotransferase (ASAT) and alanine aminotransferase (ALAT); oxidative stress (malondialdehyde [MDA], reduced glutathione/oxidative glutathione ratio [GSH/GSSG]), and matrix metalloproteinase‐8 (MMP‐8) levels; and histopathological evaluation of periodontal and liver tissues. Results Periodontal parameters showed the development of periodontitis in experimental groups. Micro‐CT results indicates an increase of bone retraction and BMD values and a decrease of BV/TV value in PER groups. Liver fibrosis could not be diagnosed with ultrasound examination in any of the groups. Elevated levels of ASAT and ALAT in PER groups compared with CTRL group were found. MDA have indicated elevated levels and a decrease of GSH/GSSG ratio in PER group compared with the CTRL group. Levels of MMP‐8 have indicated high values in PER21 compared with the other groups. Histological analysis of the periodontal and liver tissues sustains the link between periodontal and hepatic injury. Conclusion This study demonstrates a positive correlation between periodontal lesions and liver disease. Periodontitis may be an independent risk factor for liver fibrosis.