PMID- 38183564 OWN - NLM STAT- Publisher LR - 20240106 IS - 1720-8386 (Electronic) IS - 0391-4097 (Linking) DP - 2024 Jan 6 TI - Quantitative analysis of Tr1 lymphocytes in patients with type 2 diabetes mellitus. LID - 10.1007/s40618-023-02250-w [doi] AB - BACKGROUND: Type 2 diabetes mellitus (T2DM) is usually accompanied by a low-grade inflammatory phenomenon, which participates in the pathogenesis of different complications of this condition. The inflammatory response is under the regulation of different mechanisms, including T regulatory (Treg) lymphocytes. However, the possible role of type 1 T regulatory (Tr1) cells in T2DM has not been explored so far. AIM: To carry out a quantitative analysis of Tr1 lymphocytes and other immune cell subsets in patients with T2DM and correlate these results with clinical findings and treatments. MATERIALS AND METHODS: Sixty patients with T2DM and twenty-three healthy controls were included in the study. Biochemical and anthropometric variables were evaluated, and Tr1 lymphocytes (CD4(+)CD49(+)LAG-3(+)IL-10(+)) and other cell subsets (Th17, Th22 and Foxp3 + Treg cells) were analyzed in peripheral blood samples by multiparametric flow cytometry. RESULTS: Significant increased levels of Tr1 cells were detected in patients with severe and mild disease, compared to healthy controls. In addition, CD4(+)IL-10(+) lymphocytes were also increased in patients with T2DM. In contrast, similar levels of Foxp3(+) Treg cells, Th17 and Th22 lymphocytes were observed in patients and controls. Likewise, no significant associations were detected between Tr1 cell levels and different clinical and laboratory parameters. However, those patients receiving glucagon-like peptide-1 receptor agonists (GLP-1-RA) showed similar levels of Tr1 cells than healthy controls, and significant lower numbers than untreated patients. CONCLUSION: We observed an increase in Tr1 and CD4(+)IL10(+) lymphocyte levels in T2DM. Moreover, GLP1-RA treatment was significantly associated with normalization of the Tr1 levels. This highlights another potential immune dysfunction in patients with T2DM, which could participate in the pathogenesis of this condition. CI - (c) 2024. The Author(s). FAU - Knott-Torcal, C AU - Knott-Torcal C AD - Department of Endocrinology and Nutrition, Health Research Institute, Hospital Universitario de La Princesa, Universidad Autonoma de Madrid, C/Diego de Leon 62, 28006, Madrid, Spain. AD - Faculty of Pharmacy, Universidad Complutense de Madrid, Av. Seneca, 2, 28040, Madrid, Spain. FAU - de la Blanca, N S AU - de la Blanca NS AD - Department of Endocrinology and Nutrition, Health Research Institute, Hospital Universitario de La Princesa, Universidad Autonoma de Madrid, C/Diego de Leon 62, 28006, Madrid, Spain. FAU - Serrano-Somavilla, A AU - Serrano-Somavilla A AD - Department of Endocrinology and Nutrition, Health Research Institute, Hospital Universitario de La Princesa, Universidad Autonoma de Madrid, C/Diego de Leon 62, 28006, Madrid, Spain. FAU - Hernandez, R M AU - Hernandez RM AD - Department of Endocrinology and Nutrition, Health Research Institute, Hospital Universitario de La Princesa, Universidad Autonoma de Madrid, C/Diego de Leon 62, 28006, Madrid, Spain. FAU - Sampedro-Nunez, M AU - Sampedro-Nunez M AD - Department of Endocrinology and Nutrition, Health Research Institute, Hospital Universitario de La Princesa, Universidad Autonoma de Madrid, C/Diego de Leon 62, 28006, Madrid, Spain. FAU - Ruiz-Rosso, B AU - Ruiz-Rosso B AD - Faculty of Pharmacy, Universidad Complutense de Madrid, Av. Seneca, 2, 28040, Madrid, Spain. FAU - Jimenez-Blanco, S AU - Jimenez-Blanco S AD - Department of Endocrinology and Nutrition, Health Research Institute, Hospital Universitario de La Princesa, Universidad Autonoma de Madrid, C/Diego de Leon 62, 28006, Madrid, Spain. FAU - Gonzalez-Amaro, R AU - Gonzalez-Amaro R AD - Research Center of Health Sciences and Biomedicine (CICSaB), Universidad Autonoma de San Luis Potosi, SLP, Mexico. FAU - Gonzalez-Baranda, L AU - Gonzalez-Baranda L AD - Research Center of Health Sciences and Biomedicine (CICSaB), Universidad Autonoma de San Luis Potosi, SLP, Mexico. FAU - Garcimartin, A AU - Garcimartin A AD - Faculty of Pharmacy, Universidad Complutense de Madrid, Av. Seneca, 2, 28040, Madrid, Spain. garcimartin.a@gmail.com. FAU - Marazuela, M AU - Marazuela M AUID- ORCID: 0000-0001-5829-1582 AD - Department of Endocrinology and Nutrition, Health Research Institute, Hospital Universitario de La Princesa, Universidad Autonoma de Madrid, C/Diego de Leon 62, 28006, Madrid, Spain. monica.marazuela@uam.es. LA - eng GR - PI19-00584/Instituto de Salud Carlos III/ GR - PI22/01404/Instituto de Salud Carlos III/ GR - PMP22/00021/Instituto de Salud Carlos III/ GR - P2022/BMD7379/Comunidad de Madrid/ PT - Journal Article DEP - 20240106 PL - Italy TA - J Endocrinol Invest JT - Journal of endocrinological investigation JID - 7806594 SB - IM OTO - NOTNLM OT - T regulatory cells OT - T2DM OT - Tr1 lymphocytes EDAT- 2024/01/07 06:42 MHDA- 2024/01/07 06:42 CRDT- 2024/01/06 11:11 PHST- 2023/08/04 00:00 [received] PHST- 2023/11/13 00:00 [accepted] PHST- 2024/01/07 06:42 [medline] PHST- 2024/01/07 06:42 [pubmed] PHST- 2024/01/06 11:11 [entrez] AID - 10.1007/s40618-023-02250-w [pii] AID - 10.1007/s40618-023-02250-w [doi] PST - aheadofprint SO - J Endocrinol Invest. 2024 Jan 6. doi: 10.1007/s40618-023-02250-w.