PMID- 34606539 OWN - NLM STAT- MEDLINE DCOM- 20220117 LR - 20220117 IS - 2042-650X (Electronic) IS - 2042-6496 (Linking) VI - 12 IP - 19 DP - 2021 Oct 4 TI - Effect of Lactiplantibacillus plantarum HM-22 on immunoregulation and intestinal microbiota in alpha-lactalbumin-induced allergic mice. PG - 8887-8898 LID - 10.1039/d1fo01703a [doi] AB - Milk protein is one of the eight major allergens, and alpha-lactalbumin (alpha-LA) is one of the major allergens of bovine milk protein. Our previous studies found that Lactiplantibacillus plantarum HM-22 (L. plantarum HM-22) showed a good gastrointestinal survival rate and intestinal colonization. To investigate the effect of L. plantarum HM-22 on intestinal inflammation and intestinal microbiota in alpha-LA-induced allergic mice, in this study, L. plantarum HM-22 at low and high doses was intragastrically administered to alpha-LA-induced allergic mice for 5 weeks. The results showed that L. plantarum HM-22 significantly relieved the weight loss and organ index of alpha-LA-induced allergic mice (p < 0.05). L. plantarum HM-22 increased the levels of interleukin-10 (IL-10), interferon-gamma (IFN-gamma) and transforming growth factor-beta (TGF-beta) in the serum of alpha-LA-induced allergic mice and decreased the levels of total immunoglobulin E (IgE) and the proinflammatory factor interleukin-4 (IL-4) (p < 0.05). The crypt structure of the colon tissues of alpha-LA-induced allergic mice changed, goblet cells decreased, and the phenomenon of a large number of inflammatory corpuscles that appeared was improved and alleviated with the intervention of L. plantarum HM-22 by hematoxylin-eosin (HE) staining. Western blot analysis showed that L. plantarum HM-22 significantly increased the expression of occludin and claudin-1 in the colon of alpha-LA-induced allergic mice and decreased the expression of the inflammatory proteins p65 and IkappaBalpha (p < 0.05). The intestinal microbiota of mice in each group was determined by 16S rRNA amplicon sequencing, and the results showed that intervention with L. plantarum HM-22 improved the intestinal microbes of alpha-LA-induced allergic mice. Spearman's correlation analysis revealed the correlation between intestinal microbiota changes and the alpha-LA-induced allergy-related index. This study provides a theoretical basis for probiotics to prevent allergies by changing the intestinal microbiota. FAU - Jiang, Shujuan AU - Jiang S AUID- ORCID: 0000-0002-4527-0747 AD - School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China. gq6552002@aliyun.com. FAU - Hou, Yaqi AU - Hou Y AD - School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China. gq6552002@aliyun.com. FAU - Meng, Lingying AU - Meng L AD - School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China. gq6552002@aliyun.com. FAU - Pu, Xueli AU - Pu X AD - School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China. gq6552002@aliyun.com. FAU - Zhu, Xuemei AU - Zhu X AD - School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China. gq6552002@aliyun.com. FAU - Tuo, Yanfeng AU - Tuo Y AUID- ORCID: 0000-0003-2874-4354 AD - School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China. gq6552002@aliyun.com. FAU - Qian, Fang AU - Qian F AD - School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China. gq6552002@aliyun.com. FAU - Mu, Guangqing AU - Mu G AUID- ORCID: 0000-0001-9356-753X AD - School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China. gq6552002@aliyun.com. LA - eng PT - Journal Article DEP - 20211004 PL - England TA - Food Funct JT - Food & function JID - 101549033 RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Animals MH - Disease Models, Animal MH - Female MH - Gastrointestinal Microbiome/drug effects MH - Immunoglobulin E/blood/drug effects MH - *Lactobacillus plantarum MH - Mice MH - Mice, Inbred BALB C MH - Milk Hypersensitivity/*prevention & control MH - Probiotics/*administration & dosage/pharmacology EDAT- 2021/10/05 06:00 MHDA- 2022/01/18 06:00 CRDT- 2021/10/04 17:29 PHST- 2021/10/04 17:29 [entrez] PHST- 2021/10/05 06:00 [pubmed] PHST- 2022/01/18 06:00 [medline] AID - 10.1039/d1fo01703a [doi] PST - epublish SO - Food Funct. 2021 Oct 4;12(19):8887-8898. doi: 10.1039/d1fo01703a.