S TIMES AND INVESTIGATIVE METHODS change and contrast media are improved , one is tempted to assemble the various findings and correlate them with the known pathologic alterations in chronic bronchitis and pulmonary emphysema. The following text and illustrations deal with certain aspects of morphologic findings as seen by the clinician in the course of a pulmonary study. This study is based up...

Cigarette smoke-induced animal models of chronic obstructive pulmonary disease support the protease-antiprotease hypothesis of emphysema, although which cells and proteases are the crucial actors remains controversial. Inhibition of either serine or metalloproteases produces significant protection against emphysema, but inhibition is invariably accompanied by decreases in the inflammatory respo...

Chronic obstructive pulmonary disease (COPD)/emphysema risk groups are well defined and screening allows for early identification of disease. The capability of exhaled volatile organic compounds (VOCs) to detect emphysema, as found by computed tomography (CT) in current and former heavy smokers participating in a lung cancer screening trial, was investigated. CT scans, pulmonary function tests ...

PURPOSE Reduction in the level of vascular endothelial growth factor (VEGF) has been implicated in the pathogenesis of pulmonary emphysema. To this end, pharmacological VEGF receptor blockade, and the Cre-lox system models have been utilized to study the effects of VEGF depletion in the lung. These models generally reproduce air space enlargement resembling clinical emphysema. Here we report a ...

BACKGROUND Systemic effects of chronic obstructive pulmonary disease (COPD) significantly contribute to severity and mortality of the disease. We aimed to develop a COPD/emphysema model exhibiting systemic manifestations of the disease. METHODS Female NMRI mice were treated 5 times intratracheally with porcine pancreatic elastase (emphysema) or phosphate-buffered saline (control). Emphysema s...

The occurrence of emphysema in people deficient in alphai-antltrypsin and the production of emphysema in experimental animals with elastolytic enzymes suggest proteolysis as a mechanism for the development of emphysema. To investigate the possible role of pulmonary alveolar macrophages in the pathogenesis of emphysema, we measured elastase, acid protease, and elastaselike esterase activities in...

cutis laxa is rare and hetrogenous group of disorders related to abnormalities in elastic tissue. it may be autosomal recessive, autosomal dominant, x linked or acquired. acquired cutis laxa has developed after a febrile illness, inflammatory skin disease such a lupus eryhymatosis or erythema multiform, amyloidosis, hypersensitivity reaction to penicillin and in infants born from women who were...

Pulmonary emphysema is a chronic disease defined pathologically as an abnormal permanent destruction and enlargement of air spaces distal to the terminal bronchioles, accompanied by the destruction of alveolar walls without predominant fibrosis. Emphysema frequently occurs in overlapping association with chronic bronchitis which is clinically defined as chronic productive cough for three months...

BACKGROUND Chronic obstructive pulmonary disease and emphysema develops in 15% of ex-smokers despite sustained quitting, while 10% are free of emphysema or severe lung obstruction. The cause of the incapacity of the immune system to clear the inflammation in the first group remains unclear. METHODS AND FINDINGS We searched genes that were protecting ex-smokers without emphysema, using microar...

Subcutaneous tissue emphysema is observed in a several clinical settings but spontaneous subcutaneous emphysema in the absence of pneumothorax with broncho pleuro subcutaneous fistula is rare. We report a case of spontaneous subcutaneous emphysema secondary to cavitary pulmonary tuberculosis in the absence of pneumothorax.