Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0010200 (cough)
 23,843 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Results obtained during an epidemiological investigation on chronic cough and obstructive ventilatory dysfunction in subjects without bronchopulmonary affections of known etiopathogeny, carried out in a rural environment with minimal air pollution on 282 men aged between 40 and 69 years, indicate the following: --there was a lower prevalence of chronic cough in the rural environment as compared with the urban one (12.8:21.0). The percentage of heavy smokers being approximately similar in both environments, the difference could be explained by the variable intensity of air pollution, the impact of which was exerted on the large airways (hypertrophy of the serous-mucous glands resulting in hypercrinia with dyscrinia); --similar prevalence in the two environments of the obstructive ventilatory dysfunction (11,0:8,7) suggests that this abnormality, an expression of the narrowing of the small airways, could be due to other pathogenic factors. Functional pulmonary tests with sensitivity higher than the ratio between FEV 1.0 and VC (as, for instance VEmx 50% VC) could provide higher percentages of obstructive disturbances both among chronic coughing and non-coughing subjects, revealing the latent form of the obstruction, as opposed to the manifest one as evidenced by a decrease of the FEV 1.0/VC ratio.
 ...
PMID:[Prevalence of chronic productive cough and obstructive ventilatory dysfunction in a rural community with minimal air pollution]. 20 Oct 9

Thirty observations done on infants formed the base of a review of the literature on the epidemiology, the clinical signs and the physiopathological mechanisms of passive smoking (PS). The main signal was a chronic cough but in infants under 12 months, PS also provoked, as well, an "asthmatoid bronchitis", progressing relentlessly since the coming out of maternity ward, in relation with the maternal tobacco addiction. In these patients, examinations failed to disclose the different causes of recurring respiratory infections. Among the granulocytic tests, only the spontaneous migration of neutrophil polykaryocytes in the absence of chemotactic stimulus was significantly lowered, by comparison with the controls. The authors did a review on epidemiological surveys done to this day; they revealed a direct relationship between the parent's addiction to tobacco and the frequency of recurring respiratory disorders. It was particularly evident when the mother smoked and the child was under 12 months. At this age it was independant from the infection eventually transmitted by the parent's cough. The constituants of tobacco smoke probably have a depressive action over the regional or perhaps the general means of immunitary defense as it is suggested by the decrease of leukocyte migration noted in parents with PS. It is therefore necessary in our country to define the true risks of PS in infants thanks to well organized epidemiological surveys and to obtain the means of an efficient preventive policy.
 ...
PMID:[Respiratory signs linked to passive inhalation of tobacco smoke in infants (author's transl)]. 47 73

Children six months to four years of age are at greatest risk for aspiration of foreign bodies. A history of coughing after contact with small objects is the most important clue. The clinical presentation varies from paroxysms of choking and coughing to chronic cough or wheezing. Chest radiographs are normal in up to one-half of the children. The location and size of the foreign body determine the urgency and selection of therapy. Prevention and a high index of suspicion will decrease morbidity.
 ...
PMID:Aspirated foreign bodies in children. 47 60

The prevalence of chronic lung disease was investigated in 1284 adult residents of 11 villages situated at 1800 m in the Highlands of Papua New Guinea. Chronic cough, shortness of breath on exertion, bronchial hypersecretion, and adventitious chest sounds were increasingly common in both sexes from middle life onwards, and were associated with an irreversible obstructive ventilatory defect. Over the age of 45 years, 20% of men and 10% of women had an FEV1/FVC % less than 60%. The prevalence of active asthma was 0.25%. The smoking of home-grown, air-cured tobacco was not associated with chronic respiratory symptoms or reduction of ventilatory capacity. Smoking was, however, associated with recent cough symptom, bronchial hypersecretion and adventitiae. Mortality over the subsequent 5 years was increased 2--3 fold in those with adventitiae, but was not related to smoking status. The aetiological relevance of wood smoke in the houses and acute chest infections remains to be clarified.
 ...
PMID:Respiratory abnormalities, smoking habits and ventilatory capacity in a highland community in Papua New Guinea: prevalence and effect on mortality. 52 9

Two epidemiological surveys were made by the same research team on the prevalence and the aetiological factors of chronic bronchitis symptoms in coalminers. The first study was made in a coalminers' community of Belgian Limburg, the other one in a representative sample of coalminers regularly at work. In both surveys an excess of dyspnea complaints was observed in comparison to the prevalence of this symptom in controls. These dyspnea complaints often presented themselves as isolated symptoms, without chronic cough or phlegm production. Dyspnea in excess could not be explained by massive fibrosis. The prevalence of the symptom was not linked, neither to the spirometric values, nor to the results of respiratory challenge tests with acetylcholine, tobacco use, or the length of exposure at the coalface. When dyspnea was associated with cough and phlegm production there was on the contrary a statistically significant relation with the spirometric values and the effect of acetylcholine. It seems therefore reasonable to explain at least partially the isolated dyspnea complaints in coalminers by specific mechanisms not related to bronchitis but resulting from the pathological lesions characteristic of simple pneumoconiosis. Complaints of cough and phlegm production appear as a rule later in the coalminer's life. In the groups taken into consideration in the study they were linked with cigarette smoking which appeared as the predominant aetiological factor for these complaints; in a subgroup a synergic action of coaldust, tobacco use and air pollution could be discussed in this respect. Notwithstanding the pathogenic independence of some dyspnea complaints versus cough and expectoration, it is quite clear that when productive bronchitis develops and causes broncho-obstruction, it may aggravate pre-existing dyspneic patterns.
 ...
PMID:Contribution to the natural history of chronic bronchitis in coal-miners. 55 52

Chronic cough in the sense of the international definition was found in 50.5% of a group of 970 coal-miners at work without pneumoconiosis. In 14.7% of these subjects the cough was without phlegm production. Non productive cough is therefore not a rare event and this symptom may not be neglected in the natural history of chronic bronchitis in coal-miners. The changes in lung function are similar whether the cough is productive or not. In both cases endoscopic and histological features are suggestive of an established chronic inflammatory process. Allergy is not more frequent in subjects with dry cough than in those with productive cough.
 ...
PMID:Prevalence and etiology of chronic cough without sputum production in coal miners. 55 74

In a prospective study of 6,027 older men screened every six months for ten years by means of chest photofluorograms and questionnaires regarding symptoms, 121 developed lung cancer after the first examination. Eighty-five men with lung cancer had the opportunity to be screened eight times before the tumor was detected by chest x-ray film, but only 33 actually reported that often. These 33 men were compared with matched controls for symptoms before the neoplasm was detected radiologically. The common symptoms of expectoration and chronic cough showed a significant increase in frequency over time in the cases of cancer, while only expectoration showed a slight increase in the controls. Uncommon symptoms more suggestive of lung cancer (hemoptysis and worsening cough) occurred in only four men prior to detection of cancer. Symptoms are seldom useful in the detection of occult lung cancer, but the appearance of expectoration and chronic cough in older male smokers should raise a suspicion of this disease.
 ...
PMID:The Philadelphia Pulmonary Neoplasm Research Project. Symptoms in occult lung cancer. 62 May 58

Six patients with chronic cough, without history of dyspnea or wheezing, had normal base-line spirometry but hyper-reactive airways, as demonstrated with methacholine. Maintenance therapy with bronchodilators promptly eliminated the cough in all patients. Three to 12 months later therapy was discontinued for three days, cough returned, and detailed pulmonary-function studies were carried out. Again, base-line values were normal, but after methacholine one-second forced expiratory volume decreased an average of 40 per cent in the patients as compared to 30 per cent in normal controls (P less than 0.001). The point of identical flow was increased by methacholine to 43.5 per cent of vital capacity in the patients, as compared to 6 per cent in normal controls (P less than 0.001), and the alveolar plateau was 4.8 deltaN2 per liter, as compared to 1.4 in normal controls (P less than 0.01). Specific airway conductance was lowered in patients and controls, but the post-methacholine value was significantly lower in the patients. On the basis of their persistently hyper-reactive airways, inducible diffuse airway bronchoconstriction and excellent response to bronchodilator therapy, these patients appear to have a variant form of asthma in which the only presenting symptom is cough.
 ...
PMID:Chronic cough as the sole presenting manifestation of bronchial asthma. 76 86

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.
 ...
PMID:Chronic pulmonary histoplasmosis. 79 26

In a series of 2150 patients subjected to bronchoscopy 94 (4.5%) were found to have tracheobronchomalacia. Tracheomalacia alone was diagnosed in 21 patients (22%), tracheobronchomalacia in 59 (63%) and bronchomalacia alone in 14 (15%). Mild malacic changes were noted in 44 patients (47%), moderate in 38 (40.5%) and severe in 12 (12.5%). The main symptoms were dyspnoea (63%), chronic cough with expectoration (49%) and haemoptysis (33%), and the most frequent concurrent diseases chronic bronchitis (53%), bronchial cancer (27.5%) and pulmonary tuberculosis (19%). Bronchoscopy performed under local anaesthesia enabled the dynamics of the tracea and bronchi to be observed during spontaneous breathing and during coughing, and it is the best available diagnostic procedure. Histologically the number of longitudinal elastic fibres in the pars membranacea was clearly reduced throughout the whole tracheal area in one patient with tracheomalacia but no differences were found in the amount of collagen, mucopolysaccharides and elastin in the cartilages of trachea and bronchi. This disease seems to be associated with chronic obstructive pulmonary diseases such as chronic bronchitis, and it apparently shares the same aetiological factors.
 ...
PMID:Acquired tracheobronchomalacia. 88 58


1 2 3 4 5 6 7 8 9 10 Next >>