PMID- 25512222 OWN - NLM STAT- MEDLINE DCOM- 20151005 LR - 20201209 IS - 1471-230X (Electronic) IS - 1471-230X (Linking) VI - 14 DP - 2014 Dec 16 TI - Expression of NALPs in adipose and the fibrotic progression of non-alcoholic fatty liver disease in obese subjects. PG - 208 LID - 10.1186/s12876-014-0208-8 [doi] LID - 208 AB - BACKGROUND: Visceral obesity is often accompanied by non-alcoholic fatty liver disease (NAFLD). Activation of NACHT, LRR and PYD domains-containing proteins (NALPs) may contribute to the release of pro-inflammatory cytokines by adipose and the obesity-associated progression of NAFLD to non-alcoholic steatohepatitis (NASH). METHODS: We analyzed visceral adipose expression of various NALPs and its downstream effectors caspase-1, ASC (Apoptosis-associated speck-like protein containing a CARD), IL-18 (Interleukin-18) and IL-1beta (Interleukin- 1Beta) in obese subjects (BMI >/= 35) with biopsy proven NAFLD. RESULTS: In adipose samples collected from NASH and pericellular fibrosis patients cohorts, expression levels of NALPs and IL-1beta were lower than that in non-NASH patients. In portal fibrosis, the levels of mRNA encoding anti-inflammatory NALP6 were upregulated. The expression levels of all NALPs were significantly co-correlated. Circulating IL-18 levels were associated with increased liver injury markers AST and ALT and portal fibrosis. CONCLUSION: Our observations point at a possible shift in inflammation and fibrotic response from adipose tissue to liver and a possible negative feedback regulation of tissue inflammation that may instigate NAFLD severity. FAU - Mehta, Rohini AU - Mehta R AD - Betty and Guy Beatty Obesity and Liver Program, Inova Health System, Falls Church, VA, USA. mehta.rohini@gmail.com. AD - Center for the Study of Chronic Metabolic Diseases, School of Systems Biology, College of Science, George Mason University, Fairfax, VA, USA. mehta.rohini@gmail.com. FAU - Neupane, Arpan AU - Neupane A AD - Betty and Guy Beatty Obesity and Liver Program, Inova Health System, Falls Church, VA, USA. aneupane14@gmail.com. AD - Center for the Study of Chronic Metabolic Diseases, School of Systems Biology, College of Science, George Mason University, Fairfax, VA, USA. aneupane14@gmail.com. FAU - Wang, Lei AU - Wang L AD - Betty and Guy Beatty Obesity and Liver Program, Inova Health System, Falls Church, VA, USA. wanglei131@gmail.com. AD - Center for the Study of Chronic Metabolic Diseases, School of Systems Biology, College of Science, George Mason University, Fairfax, VA, USA. wanglei131@gmail.com. FAU - Goodman, Zachary AU - Goodman Z AD - Betty and Guy Beatty Obesity and Liver Program, Inova Health System, Falls Church, VA, USA. zachary.goodman@inova.org. AD - Center for Liver Diseases and Department of Medicine, Inova Fairfax Hospital, Falls Church, VA, USA. zachary.goodman@inova.org. FAU - Baranova, Ancha AU - Baranova A AD - Betty and Guy Beatty Obesity and Liver Program, Inova Health System, Falls Church, VA, USA. aancha@gmail.com. AD - Center for the Study of Chronic Metabolic Diseases, School of Systems Biology, College of Science, George Mason University, Fairfax, VA, USA. aancha@gmail.com. FAU - Younossi, Zobair M AU - Younossi ZM AD - Betty and Guy Beatty Obesity and Liver Program, Inova Health System, Falls Church, VA, USA. zobair.younossi@inova.org. AD - Center for Liver Diseases and Department of Medicine, Inova Fairfax Hospital, Falls Church, VA, USA. zobair.younossi@inova.org. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141216 PL - England TA - BMC Gastroenterol JT - BMC gastroenterology JID - 100968547 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Inflammasomes) RN - 0 (Interleukin-18) RN - 0 (Interleukin-1beta) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (NLRP4 protein, human) RN - 0 (NLRP6 protein, human) RN - 0 (RNA, Messenger) RN - 0 (Repressor Proteins) RN - EC 3.4.22.36 (Caspase 1) SB - IM MH - Adaptor Proteins, Signal Transducing MH - Adipose Tissue/*metabolism MH - Adult MH - Caspase 1/metabolism MH - Disease Progression MH - Down-Regulation MH - Female MH - Fibrosis MH - Humans MH - Inflammasomes/metabolism MH - Interleukin-18/metabolism MH - Interleukin-1beta/metabolism MH - Intracellular Signaling Peptides and Proteins/metabolism MH - Male MH - Middle Aged MH - Non-alcoholic Fatty Liver Disease/*complications/*metabolism/pathology MH - Obesity/*complications/*metabolism MH - RNA, Messenger/metabolism MH - Repressor Proteins/metabolism MH - Up-Regulation PMC - PMC4279907 EDAT- 2014/12/17 06:00 MHDA- 2015/10/06 06:00 PMCR- 2014/12/16 CRDT- 2014/12/17 06:00 PHST- 2014/08/13 00:00 [received] PHST- 2014/11/27 00:00 [accepted] PHST- 2014/12/17 06:00 [entrez] PHST- 2014/12/17 06:00 [pubmed] PHST- 2015/10/06 06:00 [medline] PHST- 2014/12/16 00:00 [pmc-release] AID - s12876-014-0208-8 [pii] AID - 208 [pii] AID - 10.1186/s12876-014-0208-8 [doi] PST - epublish SO - BMC Gastroenterol. 2014 Dec 16;14:208. doi: 10.1186/s12876-014-0208-8.