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Query: UMLS:C0034069 (pulmonary fibrosis)
 7,050 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Glycosaminoglycans from a case of pulmonary fibrosis (desquamative interstitial pneumonia of usual type) was analyzed by means of proteolytic digestion, solvent fractionation, column chromatography on anion exchanger, electrophoresis and enzymatic digestion. The result suggested an increase in dermatan sulfate and possibly of heparan sulfate in the fibrotic lung as compared with the normal. It is preferable to take the samples for analysis from a freshly excised specimen of the lung, because there was a sign of degradation of glycosaminoglycan due to storage of the specimen in a solution of formalin.
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PMID:[On glycosaminoglycans (mucopolysaccharide) in a case of pulmonary fibrosis (author's transl)]. 12 1

In 3 male patients, chronic pulmonary sequelae followed influenza virus infection at 5, 24, and 42 months of age. Varying degrees of interstitial fibrosis, bronchial and bronchiolar erosions and metaplasia, obliterative bronchiolitis, and interstitial chronic inflammatory infiltrates were found on lung biopsy. Influenza A/Hong Kong/68 (H3N2) virus was isolated from the lung tissue of one patient 8 weeks after the onset of illness. This is the longest persistence of infectious virus in lung tissue yet reported. Persistent radiographic abnormalities included peribronchial thickening, interstitial densities, bronchiectasis, obliterative bronchiolitis, and segmental atelectasis. Pulmonary function tests showed an obstructive restrictive pattern, with mild improvement after bronchodilation and with deterioration after exercise. These observations suggest that influenza virus infection may be more serious in infants and young children than has been previously recognized and may contribute to the pathogenesis of unexplained interstitial pneumonitis, pulmonary fibrosis, obliterative bronchiolitis, and bronchiectasis.
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PMID:Chronic pulmonary complications of early influenza virus infection in children. 30 85

There are different patterns of development and resolution of inflammatory alveolar and interstitial pulmonary lesions. Delayed resolution of peripheral pneumonia results in lung shrinkage mainly towards the mediastinum and the apices with distortion and atypical distribution of pulmonary vasculature and compensatory hyperinflation. Resolution in perivascular and peribronchial parts is often delayed and results in scarring. Interstitial pneumonia may result directly in pulmonary fibrosis with loss of volume and honeycombing. With varying microorganisms and varying immunity chronic and atypical courses are observed more frequently.
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PMID:[Inflammatory pulmonary lesions: resolutions and residuals (author's transl)]. 30 40

An autopsy case of cemented tungsten carbide pneumoconiosis, the first lethal case in our country, is presented. A 28-year-old woman, who had been engaged in grinding presintered metallic matrix for four years, developed respiratory symptoms. X-ray examinations were indicative of interstitial pulmonary fibrosis. Corticosteroid therapy revealed only little effect. She expired five years after the onset of the symptoms. Postmortem examination showed nonspecific interstitial pneumonitis resulting in marked lung fibrosis. Ultrastructurally, crystals were observed in cytoplasm of presumable macrophages in the fibrotic lung tissue. Electron probe microanalysis of the lung tissue showed the presence of tungsten and other constituents of tungsten carbide except for cobalt. Metal analysis demonstrated a large amount of tungsten in the lung. Cobalt was detected tenfold of the normal value in the bone. In pathogenesis of the pneumoconiosis in the cemented tungsten carbide workers, toxicity of cobalt is most suspectable, and in addition, individual susceptibility may be also important.
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PMID:Cemented tungsten carbide pneumoconiosis. 73 23

Chronic pulmonary histoplasmosis is best regarded as an opportunist or saprophytic infection of abnormal pulmonary spaces by a fungus of very low human pathogenicity. Tissue disease results from host immune response to dispersions of soluble antigen from these focal sources. There are two distinct types of clinical and radiological response. One is an acute or subacute illness manifested by often large segmental pneumonic lesions which tend to heal and are designated as early lesions. The other, usually developing as a complication of the first, is a chronic disease marked by persistent cavitation, low gard chronic illness, and a tendency to promote pulmonary fibrosis and often progressive pulmonary insufficiency. The early lesion is a segmental interstitial pneumonitis with central areas of infarct-like necrosis often adjacent to bullous disease and often outlining prominent emphysematous spaces which appear as radiolucencies. These radiological findings are further characterized by early clearing of the interstitial components, infarct-like contraction of the necrotic zones, obliteration of much of the contained emphysematous and bullous spaces, and healing attended by considerable loss of lung volume. Symptoms are variable but tend to be mild. Malaise, fatigability, low-grade fever, aching chest pain and mild cough lasting a few days to a few weeks are usual. Symptoms are ameliorated by rest. Rest and diminished activity are recommended as treatment. Under these circumstances, 80% of early lesions heal completely and probably most of these would heal spontaneously. Any subsequent course of the disease depends on whether or nor large air spaces, adjacent to or contained within the area of pneumonitis, become infected and persist as cavities. This occurs in 20% of early lesions. Once established, an infected cavity tends to persist and to be attended by symptoms of chronic bronchitis with chronic cough and sputum, fatigability, anorexia, and weight loss. Persisting thickwalled cavities often induce gradual development of pulmonary fibrosis, particulary in the lung bases, apparently from aspiration of antigenic material. This and the accelerated obstructive bronchopulmonary disease often lead to progressive pulmonary insufficiency. The use of amphotericin B is recommended for all persistent thick-walled cavities and in some circumstances surgical resection may be indicated.
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PMID:Chronic pulmonary histoplasmosis. 79 26

Pulmonary disorders occur in 25 to 47 per cent of the patients with Sjogren's Syndrome. These are of two types: 1. related to the major connective tissue disorders which commonly accompany this syndrome, and 2. secondary to the peculiar underlying pathology of Sjogren's Syndrome i.e. sicca disorders of the lung. The latter is the more frequent type, occurring mainly in patients with protected sicca complex unaccompanied by a systemic connective tissue disorder, and consists of chronic bronchitis, subsegmental atelectasis, pneumonia, bronchiectasis, lymphoproliferative pulmonary infiltrates and chronic interstitial pneumonitis which may lead to pulmonary fibrosis. 21 cases of Sjogren's Syndrome, 9 of whom had evidence of pulmonary abnormality, are presented, including a case of interstitial pneumonitis leading to diffuse interstitial pulmonary fibrosis. A review of the literature is included.
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PMID:Pulmonary disorders associated with Sjogren's syndrome. 86 98

In our previous papers we reported characteristic morphological changes of the capillary endothelium in the lung and of the arterial endothelium. These changes were induced by administration of various soluble immune complexes. In this paper we have induced pulmonary fibrosis in guinea pigs under allergic procedures. Administration of soluble immune complexes alone produces interstitial pneumonia. However, these changes would not normally result in diffuse pulmonary fibrosis. The administration of soluble immune complexes to guinea pigs plus exposure to a 60% oxygen-rich atmosphere yielded diffuse pulmonary fibrosis.
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PMID:Experimental pulmonary fibrosis induced by soluble immune complex and 60% oxygen atmosphere. 115 25

The problem of the drug induced pulmonary toxicity (cytotoxic and non-cytotoxic drugs) is discussed. This domain of modern pathology is in continuous development, although yet insufficiently delineated. The essential pathogenic mechanisms are presented as well as the main histopathological lesions (i.e., interstitial pneumonia and pulmonary fibrosis). The usual lesional aspects specific to certain drugs are also reviewed. For the principal chemical substances in this category, the clinical and radiological aspects are given, also the various treatment indicated, the evolution and the prognosis of the drugs induced pulmonary disease.
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PMID:[Drug-induced pulmonary lesions]. 132 32

We conducted a statistical review of 114 cases of dermatomyositis (DMS) treated primarily at the Department of Dermatology at Nagoya University Hospital over 27 years from 1965 to 1991 in order to determine the primary characteristics of juvenile DMS with the following results. 1) Juvenile DMS was found slightly more often in males than females; the male-to-female ratio was 1.4:1. Therefore, unlike adult DMS with its preponderance of females, there was no clear gender predominance. 2) Muscular manifestations tended to follow the appearance of cutaneous manifestations, but the frequency of minor muscular manifestations was high over the entire course of the disease. 3) Laboratory findings showed increases in serum aldolase and serum creatinine kinase with significant frequency when compared with adult patients (p < 0.01 and p < 0.05, respectively). Elevated serum aldolase most often occurred prior to or at the time of the appearance of muscular manifestations, suggesting its usefulness in early diagnosis. The positive rates for the antinuclear antibody on HEp-2 cells and anti-DNA antibody were significantly lower in children than in adults (p < 0.001 and p < 0.05, respectively). 4) There were no cases of juvenile DMS complicated by malignant tumors, interstitial pneumonia, or pulmonary fibrosis. There were also no deaths, and the rate of "remission or improvement" was significantly higher than in adult DMS cases (p < 0.05). Adult cases which remained the same or worsened usually presented with intractable muscular manifestations. In children, however, the cutaneous manifestations were more difficult to treat.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Juvenile dermatomyositis: a statistical study of 114 patients with dermatomyositis. 140 7

Forty two of 125 former workers in a factory in Syracuse, New York, which manufactured hard metal parts from tungsten carbide and cobalt, were studied by chest radiographs, spirometry, and plethysmographically determined lung volumes. The plant was closed in 1982 and the studies were performed in 1983-5. Recorded measurements of carbide dust concentrations were only mildly excessive by modern standards, but deceitful efforts to reduce the apparent concentration of dust were known to have occurred during an inspection by the Occupational Safety and Health Administration. Lung biopsies in four cases in the study and necropsy in one of the 83 cases not studied during life showed giant cell interstitial pneumonia and appreciable concentrations of tungsten carbide. This information indicates that exposure was substantial. Four workers had evidence of pulmonary fibrosis by chest radiographs; two of these workers had normal pulmonary function. Fourteen had abnormal pulmonary function, five of whom had a restrictive pattern, eight a pattern of air trapping, and one a combined pattern. Thus radiographic, or functional abnormalities, or both occurred in 16 of the 42 cases studied. No correlation with duration of exposure was established. Progressive clinically important disease (one fatal) has been found in four ex-workers, two in each of the restrictive and air trapping groups. These findings suggest that poorly regulated dust concentrations in a hard metals factory possibly cause pulmonary abnormalities and sometimes severe illness.
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PMID:Health hazard of poorly regulated exposure during manufacture of cemented tungsten carbides and cobalt. 147 40


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