PMID- 37947914 OWN - NLM STAT- MEDLINE DCOM- 20240304 LR - 20240304 IS - 1568-5608 (Electronic) IS - 0925-4692 (Linking) VI - 32 IP - 1 DP - 2024 Feb TI - Dietary tannic acid attenuates elastase-induced pulmonary inflammation and emphysema in mice. PG - 747-761 LID - 10.1007/s10787-023-01381-z [doi] AB - Emphysema is one of the major components of chronic obstructive pulmonary disease (COPD), which is characterised by the destruction and enlargement of air spaces, leading to airflow limitation and dyspnoea, finally progressing to oxygen dependency. The alveolar wall destruction is due to chronic inflammation, oxidative stress, apoptosis, and proteinase/anti-proteinase imbalance. So far, there has been no effective therapy for patients with COPD. We evaluated the therapeutic efficacy of tannic acid (TA), a naturally occurring plant-derived polyphenol in the murine emphysema model. In C57BL/6 J mice, we established emphysema by intratracheal instillation of elastase (EL). Then, mice were treated with TA and evaluated 1 and 21 days post-EL instillation. After 24 h, TA treatment significantly reduced EL-induced histopathological alterations, infiltrating leukocytes, and gene expression of markers of inflammation and apoptosis. Similarly, after 21 days, TA treatment suppressed the mean linear intercept, gene expression of proteinases, and increased elastic fiber contents in the lungs when compared to the EL-alone group. Furthermore, EL induced the activation of p38 mitogen-activated protein kinase (MAPK) and nuclear factor kappa light chain enhancer of activated B cells (NF-kB) p65 pathways in the lungs was suppressed by TA treatment. In summary, TA has the potential to mitigate EL-induced inflammation, apoptosis, proteinase/anti-proteinase imbalance, and subsequent emphysema in mice. CI - (c) 2023. The Author(s), under exclusive licence to Springer Nature Switzerland AG. FAU - Rajasekar, Nandhine AU - Rajasekar N AD - Department of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli, Tamil Nadu 620024, India. AD - Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA. FAU - Gandhi, Deepa AU - Gandhi D AD - Division of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh, 462030, India. FAU - Sivanantham, Ayyanar AU - Sivanantham A AD - Department of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli, Tamil Nadu 620024, India. AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University, Boston, MA, 02118, USA. FAU - Ravikumar, Vilwanathan AU - Ravikumar V AD - Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024, India. FAU - Raj, Dharma AU - Raj D AD - Division of Biostatistics and Bioinformatics, ICMR-National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh 462030, India. FAU - Paramasivam, Sudhakar Gandhi AU - Paramasivam SG AD - Department of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli, Tamil Nadu 620024, India. FAU - Mukhopadhyay, Sramana AU - Mukhopadhyay S AD - Department of Pathology and Lab Medicine, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh 462026, India. FAU - Rajasekaran, Subbiah AU - Rajasekaran S AUID- ORCID: 0000-0003-2303-3246 AD - Division of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh, 462030, India. rajasekaran.s@icmr.gov.in. LA - eng GR - BT/RLF/Re-entry/36/2013/Department of Biotechnology, Ministry of Science and Technology, India/ PT - Journal Article DEP - 20231110 PL - Switzerland TA - Inflammopharmacology JT - Inflammopharmacology JID - 9112626 RN - EC 3.4.21.36 (Pancreatic Elastase) RN - 0 (Tannic Acid) RN - EC 3.4.- (Peptide Hydrolases) RN - 0 (Polyphenols) SB - IM MH - Humans MH - Animals MH - Mice MH - Mice, Inbred C57BL MH - Pancreatic Elastase MH - *Emphysema MH - *Pneumonia/chemically induced/drug therapy MH - Inflammation/drug therapy MH - *Pulmonary Disease, Chronic Obstructive/chemically induced/drug therapy MH - Peptide Hydrolases MH - *Polyphenols OTO - NOTNLM OT - Elastase OT - Emphysema OT - Inflammation OT - Natural compound OT - Tannic acid OT - Therapeutic effect EDAT- 2023/11/10 12:45 MHDA- 2024/03/04 06:49 CRDT- 2023/11/10 11:08 PHST- 2023/09/07 00:00 [received] PHST- 2023/10/13 00:00 [accepted] PHST- 2024/03/04 06:49 [medline] PHST- 2023/11/10 12:45 [pubmed] PHST- 2023/11/10 11:08 [entrez] AID - 10.1007/s10787-023-01381-z [pii] AID - 10.1007/s10787-023-01381-z [doi] PST - ppublish SO - Inflammopharmacology. 2024 Feb;32(1):747-761. doi: 10.1007/s10787-023-01381-z. Epub 2023 Nov 10.