E. Vonmutius et T. Nicolai, FAMILIAL AGGREGATION OF ASTHMA IN A SOUTH BAVARIAN POPULATION, American journal of respiratory and critical care medicine, 153(4), 1996, pp. 1266-1272
Citations number
31
Categorie Soggetti
Emergency Medicine & Critical Care","Respiratory System
There is considerable evidence for a significant hereditary component
in the pathogenesis of asthma and allergic diseases. The objective of
this study was to investigate familial influences unique to the expres
sion of asthma. School children (n = 9,403), 9 to 11 yr of age, were e
nrolled in a cross-sectional survey in southern Germany. The prevalenc
e of asthma and allergic diseases in parents and children was assessed
through parental questionnaires. Atopic sensitization was measured by
skin prick tests, and bronchial responsiveness was determined by cold
air hyperventilation challenge. The prevalence of asthma alone, i.e.,
without concomitant hay fever or atopic eczema, increased strongly if
nearest of kin suffered from asthma alone (4.7 versus 11.7%, p < 0.00
01). A family history of hay fever or atopic dermatitis, excluding ast
hma, was unrelated to asthma in the offspring (4.7 versus 3.9%). These
relations did not change when stratifying for skin prick test reactiv
ity (STR) and bronchial hyperresponsiveness (BHR). STR alone and BHR a
lone (i.e., without manifestation of disease) were unrelated to a fami
ly history of asthma or allergy. The results strongly suggest a separa
te genetic factor controlling the development of asthma. Skin test pos
itivity and BHR to cold, dry air are unlikely to be the underlying mec
hanisms through which the inheritance of childhood asthma is transmitt
ed.