PMID- 32256985 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 1976-1457 (Print) IS - 2005-6168 (Electronic) IS - 1976-1457 (Linking) VI - 14 IP - 2 DP - 2020 Apr TI - Effect of saccharin on inflammation in 3T3-L1 adipocytes and the related mechanism. PG - 109-116 LID - 10.4162/nrp.2020.14.2.109 [doi] AB - BACKGROUND/OBJECTIVES: Excessive intake of simple sugars induces obesity and increases the risk of inflammation. Thus, interest in alternative sweeteners as a sugar substitute is increasing. The purpose of this study was to determine the effect of saccharin on inflammation in 3T3-L1 adipocytes. MATERIALS/METHODS: 3T3-L1 preadipocytes were differentiated into adipocytes. The adipocytes were treated with saccharin (0, 50, 100, and 200 microg/mL) for 24 h. Inflammation was induced by exposure of treated adipocytes to lipopolysaccharide (LPS) for 18 h and cell proliferation was measured. The concentration of nitric oxide (NO) was measured by using Griess reagent. Protein expressions of nuclear factor kappa B (NF-kappaB) and inhibitor kappaB (IkappaB) were determined by western blot analysis. The mRNA expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin 1beta (IL-1beta), interleukin 6 (IL-6), monocyte chemoattractant protein-1 (MCP-1), and tumor necrosis factor-alpha (TNF-alpha) were determined by real-time PCR. RESULTS: Compared with the control group, the amount of NO and the mRNA expression of iNOS in the LPS-treated group were increased by about 17.6% and 46.9%, respectively, (P < 0.05), and those parameter levels were significantly decreased by saccharin treatment (P < 0.05). Protein expression of NF-kappaB was decreased and that of IkappaB was increased by saccharin treatment (P < 0.05). Saccharin decreased the mRNA expression of COX-2 and the inflammation cytokines (IL-1beta, IL-6, MCP-1, and TNF-alpha) (P < 0.05). CONCLUSIONS: The results of this study suggest that saccharin can inhibit LPS-induced inflammatory responses in 3T3-L1 adipocytes via the NF-kappaB pathway. CI - (c)2020 The Korean Nutrition Society and the Korean Society of Community Nutrition. FAU - Kim, Hye Lin AU - Kim HL AUID- ORCID: 0000-0002-2623-9867 AD - Department of Food Science and Nutrition, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam 31116, Korea. FAU - Ha, Ae Wha AU - Ha AW AUID- ORCID: 0000-0002-9342-5483 AD - Department of Food Science and Nutrition, Natural Nutraceuticals Industrialization Research Center, DanKook University, Chungnam 31116, Korea. FAU - Kim, Woo Kyoung AU - Kim WK AUID- ORCID: 0000-0002-8652-5339 AD - Department of Food Science and Nutrition, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam 31116, Korea. LA - eng PT - Journal Article DEP - 20200121 PL - Korea (South) TA - Nutr Res Pract JT - Nutrition research and practice JID - 101311052 PMC - PMC7075742 OTO - NOTNLM OT - NF-kappa B OT - Saccharin OT - adipocytes OT - cytokine OT - inflammation COIS- CONFLICT OF INTEREST: The authors declare no potential conflicts of interest. EDAT- 2020/04/08 06:00 MHDA- 2020/04/08 06:01 PMCR- 2020/04/01 CRDT- 2020/04/08 06:00 PHST- 2019/09/04 00:00 [received] PHST- 2019/10/08 00:00 [revised] PHST- 2019/12/11 00:00 [accepted] PHST- 2020/04/08 06:00 [entrez] PHST- 2020/04/08 06:00 [pubmed] PHST- 2020/04/08 06:01 [medline] PHST- 2020/04/01 00:00 [pmc-release] AID - 10.4162/nrp.2020.14.2.109 [doi] PST - ppublish SO - Nutr Res Pract. 2020 Apr;14(2):109-116. doi: 10.4162/nrp.2020.14.2.109. Epub 2020 Jan 21.