[The circadian biorhythm of airway resistance in the pediatric age].
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Biomedical subjects
Publications and source records attributed to C Castello.
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A serological study of determine the prevalence of infections caused by human Polyoma-virus (BK strain) among the healthy population of Rome has been performed. Such virus was originally isolated from a patient undergoing a kidney transplantation, and later found in patients undergoing immunosuppressive therapy. Previous serological studies showed high incidences of infections, caused by this virus, in human populations. Other viruses, antigenically related, were found in patients suffering from progressive multifocal leukoencephalopathy. Serum samples coming from 482 healthy subjects classified by age and 100 cord blood serum samples were analyzed for antibody titers using haemoagglutination-inhibition and complement fixation tests. High incidence of infection caused by BK virus in the Roman population was found: specifically the haeomagglutination-inhibition test resulted positive in 65.2% of the samples. A remarkable similar trend between the results obtained with both the techniques was observed, although differences in antibody serum levels were present. The infections, which are not transmitted during the intrauterine life, are first noted at about two years of age. The Authors finally briefly discuss the possible epidemiological meaning of the spreading of this infection.
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The AA. make in evidence the role of the milk as carrier of Cytomegalovirus. The virus was isolated in the 23.5% of the 17 specimens of milk examinated within the first 48 hours from the delivery. The contemporary observation of the urins of the womans was negative.
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