PMID- 21787235 OWN - NLM STAT- MEDLINE DCOM- 20120214 LR - 20211020 IS - 1521-0499 (Electronic) IS - 0190-2148 (Print) IS - 0190-2148 (Linking) VI - 37 IP - 7 DP - 2011 Sep TI - Green tea epigallo-catechin-galleate ameliorates the development of obliterative airway disease. PG - 435-44 LID - 10.3109/01902148.2011.584359 [doi] AB - Lung transplantation has the worst outcome compared to all solid organ transplants due to chronic rejection known as obliterative bronchiolitis (OB). Pathogenesis of OB is a complex interplay of alloimmune-dependent and -independent factors, which leads to the development of inflammation, fibrosis, and airway obliteration that have been resistant to therapy. The alloimmune-independent inflammatory pathway has been the recent focus in the pathogenesis of rejection, suggesting that targeting this may offer therapeutic benefits. As a potent anti-inflammatory agent, epigallo-catechin-galleate (EGCG), a green tea catechin, has been very effective in ameliorating inflammation in a variety of diseases, providing the rationale for its use in this study in a murine heterotopic tracheal allograft model of OB. Mice treated with EGCG had reduced inflammation, with significantly less neutrophil and macrophage infiltration and significantly reduced fibrosis. On further investigation into the mechanisms, inflammatory cytokines keratinocyte (KC), interleukin-17 (IL-17), and tumor necrosis factor-alpha (TNF-alpha), involved in neutrophil recruitment, were reduced in the EGCG-treated mice. In addition, monocyte chemokine monocyte chemoattractant protein-1 (MCP-1) was significantly reduced by EGCG treatment. Antifibrotic cytokine interferon-gamma-inducible protein-10 (IP-10) was increased and profibrotic cytokine transforming growth factor-beta (TGF-beta) was reduced, further characterizing the antifibrotic effects of EGCG. These findings suggest that EGCG has great potential in ameliorating the development of obliterative airway disease. FAU - Liang, Olin D AU - Liang OD AD - Department of Medicine, Division of Respiratory Diseases, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA. FAU - Kleibrink, Bjoern E AU - Kleibrink BE FAU - Schuette-Nuetgen, Katharina AU - Schuette-Nuetgen K FAU - Khatwa, Umakanth U AU - Khatwa UU FAU - Mfarrej, Bechara AU - Mfarrej B FAU - Subramaniam, Meera AU - Subramaniam M LA - eng GR - K08 HL084242/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20110725 PL - England TA - Exp Lung Res JT - Experimental lung research JID - 8004944 RN - 0 (Cytokines) RN - 0 (Tea) RN - 8R1V1STN48 (Catechin) RN - BQM438CTEL (epigallocatechin gallate) SB - IM MH - Animals MH - Bronchiolitis Obliterans/*drug therapy/etiology/pathology MH - Catechin/*analogs & derivatives/pharmacology/therapeutic use MH - Cytokines MH - Fibrosis/prevention & control MH - Inflammation/drug therapy MH - Lung Transplantation/adverse effects MH - Mice MH - Neutrophil Infiltration MH - Tea PMC - PMC4372092 MID - NIHMS671576 COIS- Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper. EDAT- 2011/07/27 06:00 MHDA- 2012/02/15 06:00 PMCR- 2015/03/24 CRDT- 2011/07/27 06:00 PHST- 2011/07/27 06:00 [entrez] PHST- 2011/07/27 06:00 [pubmed] PHST- 2012/02/15 06:00 [medline] PHST- 2015/03/24 00:00 [pmc-release] AID - 10.3109/01902148.2011.584359 [doi] PST - ppublish SO - Exp Lung Res. 2011 Sep;37(7):435-44. doi: 10.3109/01902148.2011.584359. Epub 2011 Jul 25.