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Effects of Ginkgo biloba on airway histology in a mouse model of chronic asthma

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Platelet-activating factor (PAF) is an inflammatory mediator involved in the pathophysiology of asthma, suggesting a therapy antagonizing its effects may play a role in the disease treatment. The aim of the study was to determine the effects of Ginkgo biloba, a PAF antagonist, on lung histology. Thirty-five BALB/c mice were divided into five groups; A, B, C, D, and the control. All mice except controls were sensitized and challenged with ovalbumin. Mice in group A (placebo) received saline; group B received G. biloba, 100 mg/kg; group C received G. biloba, 150 mg/kg; and group D received dexamethasone, 1 mg/kg via orogastric gavage for 7 consecutive days. Chronic structural changes and airway remodeling were evaluated by using light and electron microscopy in all groups. Evaluation of lung histology indicated that the number of goblet cells, mast cells, thicknesses of epithelium, and basement membrane were significantly improved in groups B and C when compared with group A. There was no statistically significant difference in thicknesses of subepithelial smooth muscle between groups A, B, and C. When doses of G. biloba were compared with each other, only the number of goblet cells was significantly lower in group C than in group B. When G. biloba and dexamethasone groups were compared with each other, thicknesses of basement membrane and subepithelial smooth muscle were found to be lower in group D than in groups B and C. G. biloba alleviates all established chronic histological changes of lung except smooth muscle thickness in a mouse model of asthma.
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Keywords: BALB-c mice; Ginkgo biloba; dexamethasone; electron microscopy; histology; inflammation; light microscopy; lung; mouse model of asthma; remodeling

Document Type: Research Article

Affiliations: Department of Pediatric Allergy, Dokuz Eylul University Hospital, Balcova, Izmir, Turkey

Publication date: March 1, 2009

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma and by having the potential to directly impact the quality of patient care. AAP welcomes the submission of original works including peer-reviewed original research and clinical trial results. Additionally, as the official journal of the Eastern Allergy Conference (EAC), AAP will publish content from EAC poster sessions as well as review articles derived from EAC lectures.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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