Masahiko Kutsukake1, Takeshi Matsutani2, Kazuhiro Tamura1, Akihisa Matsuda3, Makoto Kobayashi1, Eiichi Tachikawa1, Eiji Uchida3. 1. Department of Endocrine Pharmacology, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, Japan. 2. Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, Bunkyo, Tokyo, Japan. Electronic address: matsutani@nms.ac.jp. 3. Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Nippon Medical School, Bunkyo, Tokyo, Japan.
Abstract
BACKGROUND: Pioglitazone modulates adipocyte differentiation and enhances adiponectin promoter activity to increase plasma adiponectin levels. We investigated the effects of pioglitazone on cecal ligation and puncture (CLP)-induced visceral-adipose-tissue inflammation and lung injury in mice. MATERIALS AND METHODS: Eight-wk-old male mice were assigned to three groups: (1) a sham-operated control group, (2) a CLP group, and (3) a pioglitazone-treated CLP group. Pioglitazone (10 mg/kg) was injected intraperitoneally for 7 d. Serum, lung, and visceral adipose tissue were collected 24 h after surgery. Tumor necrosis factor α (TNF-α) levels in peritoneal lavage fluid were measured by an enzyme-linked immunosorbent assay, and TNF-α and interleukin 6 messenger RNA (mRNA) expression levels in visceral adipose tissue were quantified by real-time polymerase chain reaction. Lung tissue specimens were stained with hematoxylin-eosin, and the terminal deoxynucleotidyl transferase dUTP-mediated nick-end labeling method was used to evaluate tissue damage. RESULTS: TNF-α levels in peritoneal lavage fluid were significantly higher in the CLP group than in the sham group. TNF-α levels in the pioglitazone-treated CLP group were significantly lower than those in the CLP group. TNF-α and interleukin 6 mRNA expression levels of visceral adipose tissue were significantly higher in the CLP group than in the sham group. Pioglitazone treatment decreased the mRNA expression levels of these cytokines compared with the respective values in the CLP group. Histopathologic analysis of lung tissue revealed significantly increased numbers of terminal deoxynucleotidyl transferase dUTP-mediated nick-end labeling-positive cells in the CLP group compared with the sham group. CONCLUSIONS: Pioglitazone effectively prevents lung injury caused by CLP-induced sepsis by maintaining the anti-inflammatory status of visceral adipose tissue.
BACKGROUND:Pioglitazone modulates adipocyte differentiation and enhances adiponectin promoter activity to increase plasma adiponectin levels. We investigated the effects of pioglitazone on cecal ligation and puncture (CLP)-induced visceral-adipose-tissue inflammation and lung injury in mice. MATERIALS AND METHODS: Eight-wk-old male mice were assigned to three groups: (1) a sham-operated control group, (2) a CLP group, and (3) a pioglitazone-treated CLP group. Pioglitazone (10 mg/kg) was injected intraperitoneally for 7 d. Serum, lung, and visceral adipose tissue were collected 24 h after surgery. Tumor necrosis factor α (TNF-α) levels in peritoneal lavage fluid were measured by an enzyme-linked immunosorbent assay, and TNF-α and interleukin 6 messenger RNA (mRNA) expression levels in visceral adipose tissue were quantified by real-time polymerase chain reaction. Lung tissue specimens were stained with hematoxylin-eosin, and the terminal deoxynucleotidyl transferase dUTP-mediated nick-end labeling method was used to evaluate tissue damage. RESULTS: TNF-α levels in peritoneal lavage fluid were significantly higher in the CLP group than in the sham group. TNF-α levels in the pioglitazone-treated CLP group were significantly lower than those in the CLP group. TNF-α and interleukin 6 mRNA expression levels of visceral adipose tissue were significantly higher in the CLP group than in the sham group. Pioglitazone treatment decreased the mRNA expression levels of these cytokines compared with the respective values in the CLP group. Histopathologic analysis of lung tissue revealed significantly increased numbers of terminal deoxynucleotidyl transferase dUTP-mediated nick-end labeling-positive cells in the CLP group compared with the sham group. CONCLUSIONS:Pioglitazone effectively prevents lung injury caused by CLP-induced sepsis by maintaining the anti-inflammatory status of visceral adipose tissue.
Authors: Isabel Matos Medeiros-de-Moraes; Cassiano Felippe Gonçalves-de-Albuquerque; Angela R M Kurz; Flora Magno de Jesus Oliveira; Victor Hugo Pereira de Abreu; Rafael Carvalho Torres; Vinícius Frias Carvalho; Vanessa Estato; Patrícia Torres Bozza; Markus Sperandio; Hugo Caire de Castro-Faria-Neto; Adriana Ribeiro Silva Journal: Oxid Med Cell Longev Date: 2018-11-13 Impact factor: 6.543
Authors: Hermine Muniangi-Muhitu; Elina Akalestou; Victoria Salem; Shivani Misra; Nicholas S Oliver; Guy A Rutter Journal: Front Endocrinol (Lausanne) Date: 2020-10-08 Impact factor: 5.555