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Thorax 1999;54:938-946 ( October )

Occasional review

Immune mechanisms of childhood asthma

Carolyn E Donovan, Patricia W Finn

Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA

Correspondence to: Dr Finn.

The first 150 words of the full text of this article appear below.

	Introduction

Asthma is the most common chronic disease of childhood in developed countries.¹ Recent studies suggest that most asthmatics are diagnosed by the age of five, with symptoms first occurring during infancy and early childhood.^2 3 Allergy is known to play a significant role in childhood asthma.^4-6 The prevalence of allergic diseases including asthma has increased significantly over the past 40 years.^7 8 The reasons for this increase are not known but are under active investigation. Understanding the pathogenesis of childhood asthma may lead to the development of novel therapies or even to preventive strategies. Little is known about the cellular and molecular mechanisms underlying this disorder. T cells are critical for the initiation and maintenance of the mature asthmatic inflammatory response. Complex interactions between T and B lymphocytes and antigen presenting cells (APC) lead to inflammation, cytokine production, IgE production, and bronchial hyperresponsiveness (BHR). T cell differentiation which will lead to expression of . . . [Full text of this article]

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