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Biomedical subjects

J Morera

Publications and source records attributed to J Morera.

At least 127 records · Page 7Linked to original sources
PubMed1983

Amiodarone and pulmonary fibrosis.

Of 25 cases of idiopathic pulmonary fibrosis, confirmed by open chest lung biopsy between January 1979 and July 1981, 5 patients had been taking amiodarone in doses less than 600 mg daily for 1 to 6 years. No lung disease had been observed in any patient before the administration of amiodarone, and other drugs, factors and diseases thought to play a role in the causation of pulmonary fibrosis were ruled out. Two patients died of respiratory insufficiency, and only 1 does not now suffer from serious sequelae. Review of a further 5 cases reported in the literature and the present data suggest a causal link between administration of amiodarone and pulmonary fibrosis, and tend to indicate a hypersensitivity mechanism.

Aged↗
PubMed1981

[Delayed skin reaction in a group of 400 hospital patients: control study (author's transl)].

Delayed hypersensitivity skin tests were carried out with 5 antigens - PPD, staphylococcus, streptokinase/streptodornase, candida and trichophytin-in 400 hospital patients without any known causes for diminished delayed hypersensitivity. The degree of reactivity to each antigen was: PPD. 69.50%; candida 49.75%; streptokinase/streptodornase 44.50%; trichophytin 42.00%; staphylococcus 14.25%. Reactivity to either PPD or candida occurred in 86.50% of all cases. Positive response to streptokinase/streptodornase was present in 7%; which brings the total cases with reactions to one or more of the 3 antigens to 93.50%. Those who responded to trichophytin or staphylococcus were 3% only, bringing the total response of all cases to at least one antigen, to 96.5%.

Adolescent↗
PubMed1981

[Familial incidence of bird-breeder's lung and HLA (author's transl)].

The cases of two siblings affected with bird-breeder's lung are reported. The analysis of their HLA group demonstrated that both belonged to the haplotype HLA Bw15. The finding of a familial incidence of this type of alveolitis favors the presence of a genetic susceptibility for the disease. The same HLA group has been found in the rare families heretofore reported with bird-breeder's lung. Given that the pathogenesis of extrinsic allergic alveolitis has recently been linked to cellular immunity (T cells), and that the presence of a common HLA haplotype in patients suffering from bird-breeder's lung is related to the capacity for an immune response in general, and to the cellular immune response in particular, the presence of a genetic susceptibility in this disease appears as very likely, although the influence of other factors can not be ruled out.

Alveolitis, Extrinsic Allergic↗
PubMed1981

[Chest radiology in rheumatoid arthritis. A study of 89 patients (author's transl)].

Chronic interstitial pneumonia, necrobiotic nodules and pleural lesions are felt to be extraarticular manifestations of rheumatoid arthritis (RA). In a prospective study, posteroanterior and lateral chest X-ray films were taken in 89 patients with classical or definite RA (15 male and 74 female), of whom 64 (71.9%) were seropositive. The findings were compared with those of 103 age and sex matched controls. The chest X-rays were blindly evaluated by two of the authors (a pneumologist and a radiologist), and the presence of an interstitial pattern, nodules or pleural lesions was recorded. The following results were obtained: Interstitial pattern, in patients with RA, 5/89 (5.6%), and in controls, 5/103 (4.6%). Pulmonary nodules, in RA, 2/89 (2.2%), and in controls, 2/103 (1.9%). Pleural adhesions, in RA, 32/89 (35.9%), and in controls, 24/103 (23.5%). The results of the present series demonstrate that radiological pulmonary lesions are not more frequent in RA than in controls, similar conclusions having been reached by other authors.

Arthritis, Rheumatoid↗
PubMedDate not supplied

Mineralogical microanalysis of idiopathic pulmonary fibrosis.

A mineralogical analysis of lung tissue was conducted on 25 samples from patients who had been diagnosed as having idiopathic pulmonary fibrosis (IPF). Scanning electron microscopy (SEM) at low magnification and energy-dispersive x-ray analysis (EDXA) was used. In all samples, the surface silicon/sulfur (Si/S) ratio was calculated. The Si/S ratio for 25 samples of normal lung and 6 samples of pneumoconiotic lung was also determined (upper limit of normal Si/S ratio = 0.3). The difference between the Si/S ratio in the group with IPF and group with normal lung tissue was significantly significant (p less than .007, Wilcoxon test). Six of 12 patients with a previous diagnosis of IPF and a Si/S ratio greater than 0.3 had an exposure history that could imply inhalation of silica/silicates, and the correct diagnosis for these patients is most probably pneumoconiosis. The silica/silicate deposits detected in patients with IPF, and who had a ratio and no past exposure to dusts, could be either a cause or an effect of the disease.

Adult↗