Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0037116 (silicosis)
 1,822 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The diagnostic results of 125 thoracoscopies in patients aged 17-85 years are analysed retrospectively. The condition for relevant diagnosis by thoracoscopy is an intrapleural space permitting the installation of a pneumothorax of sufficient size for tissue-biopsy under direct vision. The results are largely dependent upon the choice of suitable cases. Macroscopic appearance and histological examination made it possible in 100 of 125 cases to make a definite diagnosis or to exclude it. Thoracoscopy is a suitable diagnostic method especially for the following indications : pleural disorder of uncertain origin (metastatic, tuberculous or of other origin); primary pleural disease (mesothelioma); disseminated pulmonary processes (silicosis, sarcoidosis, miliary tuberculosis, interstitial fibrosis of the lung); peripheral lung disease and spontaneous pneumothorax are other indications. Some representative cases are reported. Biopsy by thoracoscopy is certainly superior to blind pleural biopsy, and is not unpleasant for the patient. The method is even suitable for smaller hospitals, if the technique is careful and indications are well chosen.
 ...
PMID:[Results of thoracoscopies in the diagnosis of diseases of the lungs and of the pleura (author's transl)]. 725 10

The authors report the case of a miner suffering from pulmonary and nodal sarcoidosis treated with corticosteroids where during a multivisceral exacerbation with iritis and erythema nodosum there developed rapidly progressive pseudo-tumoral silicosis. Pulmonary and nodal biopsies by thoracotomy revealed silicotic masses in the upper lobe, penetrated and bordered by sarcoid granulomas. In the middle lobe and hilar nodes, only sarcoid process was present. This new entity, sarcoido-silicosis, follows its own course, insensitive to corticosteroids. By virtue of its immune status, sarcoidosis favourised the rapid development of silicosis, the latter being unexpected since exposure had been moderate. Deficiency in the elimination of silica particles from the lungs is discussed. A trial of treatment using aluminium hydroxy-allantoinate did not lead to any conclusion.
 ...
PMID:[Silicosis with a rapid and pseudo-tumoral course occurring in a case of pre-existant progressive and treated pulmonary sarcoidosis in a miner little exposed to silicosis risk : sarcoido-silicosis (author's transl)]. 730 14

On the basis of our own experience the importance and usefulness of the scalene-node-biopsy for the diagnosis of intrathoracic diseases will be reported. If there is no positive histological result in the obtained lymph nodes during surgery, one can continue with the mediastinoscopy (Carlens) without aggravating Daniels biopsy. The scalene-node biopsy is a short surgical procedure, that can easily be done in local anaesthesia. A positive lymph node makes mediastinoscopy or a following thoracotomy unnecessary. Especially in sarcoidosis, systemic diseases (malignant lymphomas) and silicosis biopsy yields good results.
 ...
PMID:[Scalene node biopsy (author's transl)]. 734 19

To compare the values of transthoracic needle biopsy and open lung biopsy on 130 patients with disseminated lung diseases transthoracic needle biopsies were carried out immediately before open lung biopsies (including the punction area). A conclusive diagnosis was obtained in 98% by open lung biopsy but only in 42% by transthoracic needle biopsy. In cases of pulmonary fibrosis and sarcoidosis needle biopsies gave a positive result in 50% whereas in other diseases like tuberculosis and silicosis in not more than one third a correct diagnosis has been achieved. The results of the direct comparisons demonstrate the superiority of open lung biopsy in diagnostics of disseminated lung alterations.
 ...
PMID:[Correlative studies comparing the value of transthoracic needle biopsy and open lung biopsy in disseminated lung diseases]. 734 55

We studied the seric activity of the angiotensin converting enzyme (ACE) in 19 patients with sarcoidosis, 14 tuberculosis, 16 silicosis and 15 workers of coal mining without silicosis and other concomitant diseases, in order to assess its usefulness as orientative parameter for the differential diagnosis of these processes. We found significantly increased values with respect to the control group in all of them: control group (40.84 +/- 13.06 U/l), sarcoidosis (57.77 +/- 16.47 U/l), tuberculosis (46.85 +/- 10.25 U/l), silicosis (61.50 +/- 21.40 U/l), miners (71.50 +/- 12.48 U/l). We did not detect any statistically significant differences between the several diagnostic groups except for miners and tuberculosis (p = 0.04). We conclude that this parameter is hot very useful for the diagnostic orientation of these processes.
 ...
PMID:[Angiotensin-converting enzyme (ACE) in sarcoidosis, tuberculosis, silicosis, and coal mining workers]. 773 65

Samples of alveolar macrophages (AM) obtained by bronchoalveolar lavage from patients with either paracoccidioidomycosis, silicosis, sarcoidosis, or allergic alveolitis were investigated by electron microscopy and immunocytochemistry to compare cellular ultrastructure and expression of MHC-II antigens in the AM cell surface. All samples of AM obtained from patients with these pathologies showed heterogeneous structural features. Although, this morphological diversity is also present in AM of healthy donors, our observations seem to indicate that in the diseases studied this morphofunctional diversity is associated with additional ultrastructural characteristics inherent to each disease. In paracoccidioidomycosis the proportion of vacuolated macrophages is significantly lower than in other diseases; this might indicate that in paracoccidioidomycosis the proportion of activated AM is smaller. We observed significant differences in the expression of MHC-II antigens. Silicosis, sarcoidosis, and allergic alveolitis do not differ significantly in the quantity of immunolabeled AM or in the distribution of the label. The percentage of AM from paracoccidioidomycosis that exhibit the MHC-II molecule is very low with poor immunolabeling. In this disease the low expression of the MHC-II molecule could be related to a decrease of the antigen presenting function by AM.
 ...
PMID:Comparative ultrastructure and immunolabeling of MHC-II antigens of alveolar macrophages obtained from patients with paracoccidioidomycosis and other lung diseases. 782 61

Diagnosing of alveolitis is a puzzle of many pieces, based on clinical experience and keeping in mind the criteria of extrinsic allergic alveolitis. They are antigen-exposure, typical delayed postexpositional symptoms (cough, chills, fever, dyspnea, tiredness), and serological tests of precipitating antibodies. Helpful findings are X-ray of the chest, high resolution computer tomography, auscultation findings, lowered diffusing capacity, bronchoalveolar lavage with lymphocytes > 50% and low T4/T8-ratio, histology of periphere lung specimens, and occasional inhaled provocation. Differential diagnosis are toxic lung disorders, drug adverse effects, sarcoidosis, silicosis, autoimmune alveolitis, idiopathic fibrosing alveolitis. The most frequent failure in diagnosis are common viral cold, bronchopneumonia, sarcoidosis, chronic bronchitis, and miliar tuberculosis.
 ...
PMID:[Diagnostic process of alveolitis--state of the art]. 787 67

Angiotensin-converting enzyme (ACE) activity in serum is used as an aid to the diagnosis and follow-up of patients with sarcoidosis. A theoretical limitation of measurements of activity is that these may be affected by the presence of pharmacologic or endogenous inhibitors of ACE. Immunoassays of ACE concentration avoid this problem and, when combined with tests of ACE activity, permit calculation of specific activity of ACE. In this study, we set out to develop a sensitive radioimmunoassay for ACE to compare results obtained with this method with results of ACE activity and calculated ACE specific activity in patients suffering from a variety of lung diseases. In a group of control subjects (n = 32), the ACE concentration was 453.7 +/- 159.8 (SD) ng/mL; 95% confidence interval (CI), 398.34 to 509.06, but levels were significantly elevated in sarcoidosis (979.3 +/- 558.6 ng/mL; 95% CI, 827.5 to 1,131.1; n = 51; p < 0.001 vs control subjects), silicosis (646.5 +/- 239.1 ng/mL; 95% CI, 544.2 to 748.8; n = 21; p < 0.01), and miliary tuberculosis (647.0 +/- 217.1 ng/mL; 95% CI, 551.9 to 742.1; n = 29; p < 0.01). The levels were normal in COPD, interstitial pulmonary fibrosis, and active cavitary pulmonary tuberculosis. The overall correlation between ACE activity and concentration measurements was strong (r = 0.93). No evidence of endogenous ACE inhibition was observed in any of the disease categories studied except in COPD where an elevation of ACE specific activity was observed, raising the possibility that in this condition different isozymes of ACE with higher specific activity might be released.
 ...
PMID:Serum angiotensin-converting enzyme activity, concentration, and specific activity in granulomatous interstitial lung disease, tuberculosis, and COPD. 787 41

Macrophage inflammatory proteins 1 alpha and beta (MIP-1 alpha and beta) and macrophage inflammatory protein 2 (MIP-2) are approximately 6-8 kd, heparin binding proteins that exhibit a number of inflammatory and immunoregulatory activities. The MIP proteins are members of a superfamily of cytokines called chemokines, many of which have been shown to possess chemotactic activity for inflammatory and immune effector cells. While MIPs were originally identified as secretory products of endotoxin-stimulated mouse macrophages, these chemokines are produced by a variety of cell types including neutrophils, fibroblasts, and epithelial cells. In addition, proteins with a high degree of structural and functional homology to murine MIP-1 alpha and beta and MIP-2 have been identified in other species including humans. MIP-1 alpha and beta are chemotactic for monocytes and lymphocytes and MIP-2 is a potent chemotactic factor for neutrophils. MIPs likely also play a role in regulating hematopoiesis and stimulating production of other inflammatory mediators such as IL-1, TNF alpha, and histamine. Studies using animal models of lung injury and inflammation have implicated MIPs as important mediators of lung defense. Increased MIP expression has been observed in models of bacterial sepsis, silicosis, and oxidant-induced lung injury. Studies in humans indicate MIP-1 alpha contributes to the inflammatory cell response associated with sarcoidosis and idiopathic pulmonary fibrosis. Given the bioactivities of MIP-1 alpha and beta and MIP-2 and the recent studies demonstrating their association with lung inflammation, it is likely these chemokines play a significant role in respiratory tract defenses and may contribute to the pathogenesis of inflammatory lung disease.
 ...
PMID:Macrophage inflammatory proteins: biology and role in pulmonary inflammation. 788 2

Between February 1988 and January 1992, 61 patients have undergone bilateral lung transplantations (42 heart-lung and 19 double-lung) in Bordeaux. The underlying diseases were primary or secondary hypertension (20), emphysema (22), or other diseases including cystic fibrosis, pulmonary fibrosis, silicosis, and sarcoidosis (19). Actuarial survival for double-lung and heart-lung transplant recipients was 66% and 72% at 1 year and 57% and 53% at 3 years, respectively. Forty-two patients were still alive 6 months after operation, and we studied their pulmonary function at the short and long term. All parameters except arterial carbon dioxide tension had improved dramatically at 6 months (p < 0.0001). Vital capacity, forced expiratory volume in 1 second, and forced expiratory flow rate between 25% and 75% of vital capacity were at 79% +/- 3%, 92% +/- 5%, and 105% +/- 8% of the predicted values, respectively. Arterial oxygen tension was 88 +/- 3 mm Hg. Nine months after operation, a slight decrease in forced expiratory volume in 1 second and forced expiratory flow rate between 25% and 75% of vital capacity appeared but values remained more than 75% predicted. This was related to the occurrence of obliterative bronchiolitis in 6 patients (14%). At 9 months, flow rates and oxygen tension of these 6 patients were highly different from those of patients free of obliterative bronchiolitis (p < 0.0002 for flow rates and p < 0.01 for oxygen tension). Only 1 patient required retransplantation. The others are living an almost normal life. Our results are discussed in view of the published reports on single-lung transplantation. Short-term results of bilateral lung transplantation are thus excellent and maintained on a long-term basis. Therefore, in our opinion, bilateral lung transplantation is the therapy of choice for pulmonary hypertension and emphysema.
 ...
PMID:Long-term functional results after bilateral lung transplantation. Bordeaux Lung and Heart-Lung Transplant Group. 832 78


<< Previous 1 2 3 4 5 6 7 8 9 Next >>