Luísa Machado

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The non-specific bronchial reactivity following bronchial allergen challenge was studied in 40 patients with allergic bronchial asthma, particularly in subjects without definite late reactions 6 h after the provocations (reduction in peak expiratory flow or forced expiratory volume in 1 s of less than 15% of the control value at this time). Among a group of(More)
Individual smoking histories of a general population sample and of two groups of workers exposed to occupational allergens were related to serum IgE concentrations and results of radioallergosorbent and prick tests in the workers. The geometric mean IgE concentration was higher in smokers than in non-smokers. The distribution of serum IgE values in the two(More)
Forty-seven patients with allergic bronchial asthma were challenged with the relevant allergen. Forty-eight per cent of the provocations resulted in a positive immediate reaction followed by a late bronchial response. Late bronchial obstruction was more common among patients with a high than with a low RAST score. Ten patients were challenged with different(More)
BACKGROUND In general, the non-pyroglyphid mites Lepidoglyphus destructor and Blomia tropicalis show a different geographical distribution. Allergic sensitization to both species have been demonstrated in several investigations. However, whether this reflects cross-reactivity or dual sensitization is so far not known. OBJECTIVE The aim of the study was to(More)
Comparison of the clinical significance and allergenic cross-reactivity of Blomia kulagini (B. kulagini) and Lepidoglyphus destructor (L. destructor) was made on sera from Sweden and Brazil using the radio-allergo-sorbent test (RAST) and the RAST inhibition technique. RAST-positive sera were obtained from 53 allergic Swedish farmers and 31 allergic subjects(More)
BACKGROUND AND STUDY AIMS Percutaneous endoscopic gastrostomy (PEG) is the preferred route for long-term enteral feeding. Our aims were to prospectively evaluate the outcome ("PEG status") and complications of PEG and to determine whether these can be predicted by patients' baseline characteristics. PATIENTS AND METHODS We conducted a prospective study in(More)
It is known that workers in the pharmaceutical industry, and nurses, can become sensitized and develop allergic respiratory symptoms by handling bulk laxatives containing Ispaghula powder. Fifteen individuals allergic to Ispaghula were challenged with a commercially available Ispaghula product and three other products manufactured in a way to make them less(More)
OBJECTIVES Acute vulvar ulcers are quite common, and often, an etiological diagnosis cannot be achieved. This article reports 3 cases of vulvar ulcers in adult women infected with Mycoplasma pneumoniae. The authors were able to find only one similar report in the literature. MATERIAL AND METHODS Two women in their third decade of life and 1 in the fourth(More)
Finely ground psyllium (Plantago ovata) seeds, so-called ispaghula powder is used in bulk laxatives. During the dispensing of these medicines some dust is generated. Allergic symptoms from exposure to this dust was reported by two nurses, one of whom was wroking in a department where exposure to the powder could be considered high. Nineteen other subjects(More)
Twenty-four patients with asthma of suspected allergic origin were subjected to a total of twenty-five bronchial provocations with the relevant allergen. Eighteen of them reacted with bronchial obstruction: eleven with an isolated early reaction, five with a dual reaction and two with only a late reaction. Extensive lung function tests were performed. The(More)