PMID- 36060644 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220907 IS - 2391-5412 (Electronic) IS - 2391-5412 (Linking) VI - 17 IP - 1 DP - 2022 TI - Aberrant pulmonary immune response of obese mice to periodontal infection. PG - 991-1000 LID - 10.1515/biol-2022-0089 [doi] AB - Obesity and periodontitis constitute mutual risk factors in respiratory disorders; this study aimed to explore the pulmonary immune response to periodontal infection using combined animal models with diet-induced obesity (DIO). Thirty-two C57 BL/6J mice were randomly divided into low-fat (LF) or high-fat (HF) diet groups and fed an LF diet as a control or an HF diet to induce obesity. The 30-week mice in the diet group were divided into periodontal ligation group (10 days using Porphyromonas gingivalis ATCC 33277) or sham-ligation group. The expressions of the macrophage-specific maker (F4/80), macrophage chemotactic protein1 (MCP1), and inflammatory cytokines in lung tissues were analyzed. The mRNA and protein levels of F4/80, MCP1, interleukin (IL)-1beta, and IL-6 expressions were significantly upregulated by obesity in lung tissues. However, the mRNA and protein levels of F4/80, MCP1, and IL-6 were downregulated by periodontitis in DIO mice relative to that of the HF control group. Periodontitis increased tumor necrosis factor-alpha level of lung tissues under LF, while IL-10 was not affected by obesity regardless of periodontitis. Periodontitis may aggravate pulmonary immune response in obese rodents. This may relate to the imbalance of the pro- and anti-inflammatory cytokine status of lung lesions, which tends to attenuate the infiltration of alveolar macrophages. CI - (c) 2022 Wei Zhou et al., published by De Gruyter. FAU - Zhou, Wei AU - Zhou W AD - Department of Periodontics, Shenzhen Stomatological Hospital, Southern Medical University, Shenzhen, Guangdong, China. FAU - Xuan, Dongying AU - Xuan D AD - Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou, Guangdong, China. FAU - Yu, Ting AU - Yu T AD - Department of Periodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key laboratory of Basic and Applied Research of Oral Regenerative Medicine, 195A, Dongfeng West Road, Yuexiu District, Guangzhou, Guangdong, China. FAU - Zhang, Jincai AU - Zhang J AD - Southern Medical University, No. 1023-1063, Shatai South Road, Baiyun District, Guangzhou, Guangdong, China. LA - eng PT - Journal Article DEP - 20220817 PL - Poland TA - Open Life Sci JT - Open life sciences JID - 101669614 PMC - PMC9386611 OTO - NOTNLM OT - diet-induced obesity OT - periodontal infection OT - pulmonary immune response COIS- Conflict of interest: Authors state no conflict of interest. EDAT- 2022/09/06 06:00 MHDA- 2022/09/06 06:01 PMCR- 2022/08/17 CRDT- 2022/09/05 03:57 PHST- 2022/01/06 00:00 [received] PHST- 2022/05/16 00:00 [revised] PHST- 2022/05/18 00:00 [accepted] PHST- 2022/09/05 03:57 [entrez] PHST- 2022/09/06 06:00 [pubmed] PHST- 2022/09/06 06:01 [medline] PHST- 2022/08/17 00:00 [pmc-release] AID - biol-2022-0089 [pii] AID - 10.1515/biol-2022-0089 [doi] PST - epublish SO - Open Life Sci. 2022 Aug 17;17(1):991-1000. doi: 10.1515/biol-2022-0089. eCollection 2022.