PMID- 21144225 OWN - NLM STAT- MEDLINE DCOM- 20110325 LR - 20181201 IS - 1945-8932 (Electronic) IS - 1945-8932 (Linking) VI - 24 IP - 6 DP - 2010 Nov-Dec TI - Pioglitazone attenuates allergic inflammation and induces production of regulatory T lymphocytes. PG - 454-8 LID - 10.2500/ajra.2010.24.3522 [doi] AB - BACKGROUND: Peroxisome proliferator-activated receptor gamma (PPAR-gamma) agonists have been shown to be involved in the regulation of allergic inflammatory responses. The molecular mechanisms by which PPAR-gamma activation inhibits the inflammatory process have not been well understood. METHODS: BALB/c mice received ovalbumin (OVA) sensitization followed by OVA intranasal challenge. Mice in the treatment group received intragastric administration with pioglitazone (PIO; 30 mg/kg) before each OVA challenge. Various allergic responses were then assessed. RESULTS: The frequencies of sneezing and nose-scratching and eosinophil infiltration decreased significantly in the PIO treatment group compared with the OVA group (p < 0.05). The PIO treatment also showed that the levels of nasal cavity lavage fluid interleukin (IL)-5 and sera OVA-specific immunoglobulin E (IgE) were markedly reduced (p < 0.05). PIO significantly increased the expression of Foxp3 mRNA (p < 0.05) and induced production of regulatory T lymphocyte (p < 0.01) compared with the OVA group. CONCLUSION: Given the potent effectiveness shown by PIO, we conclude that PPAR-gamma agonists deserve investigation as potential therapies for human allergic upper airway inflammation. FAU - Wang, Weihua AU - Wang W AD - Department of Otolaryngology-Head and Neck Surgery, Shanghai East Hospital, Tongji University School of Medicine, 150 Jimo Road, Shanghai, China. FAU - Zhu, Zhenghua AU - Zhu Z FAU - Zhu, Bingwei AU - Zhu B FAU - Ma, Zhaoxin AU - Ma Z LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Rhinol Allergy JT - American journal of rhinology & allergy JID - 101490775 RN - 0 (Forkhead Transcription Factors) RN - 0 (Foxp3 protein, mouse) RN - 0 (GATA3 Transcription Factor) RN - 0 (Interleukin-5) RN - 0 (PPAR gamma) RN - 0 (RNA, Messenger) RN - 0 (Thiazolidinediones) RN - 37341-29-0 (Immunoglobulin E) RN - X4OV71U42S (Pioglitazone) SB - IM MH - Animals MH - CD4-Positive T-Lymphocytes/drug effects MH - Female MH - Forkhead Transcription Factors/genetics MH - GATA3 Transcription Factor/genetics MH - Immunoglobulin E/blood MH - Interleukin-5/blood MH - Mice MH - Mice, Inbred BALB C MH - PPAR gamma/*agonists MH - Pioglitazone MH - RNA, Messenger/analysis MH - Rhinitis, Allergic, Perennial/*drug therapy/immunology MH - T-Lymphocytes, Regulatory/*drug effects/physiology MH - Thiazolidinediones/pharmacology/*therapeutic use EDAT- 2010/12/15 06:00 MHDA- 2011/03/26 06:00 CRDT- 2010/12/15 06:00 PHST- 2010/12/15 06:00 [entrez] PHST- 2010/12/15 06:00 [pubmed] PHST- 2011/03/26 06:00 [medline] AID - 10.2500/ajra.2010.24.3522 [doi] PST - ppublish SO - Am J Rhinol Allergy. 2010 Nov-Dec;24(6):454-8. doi: 10.2500/ajra.2010.24.3522.