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At least 955 records · Page 53Linked to original sources
PubMed1981

Effect of air pollution on chronic respiratory disease in the New York city metropolitan area, 1972.

The effect of air pollution on chronic respiratory diseases (CRD) was examined in a study in the New York metropolitan area in 1972. Four study communities, sites A, B, C and D, were selected for the similarity of socioeconomic and demographic characteristics. Historically, these communities represented an increasing gradient of air pollution levels. However, after air quality improvement in the metropolitan area, Site A had only slightly lower pollution levels than sites B, C and D. In the examination of chronic respiratory symptoms, study hypotheses were established to correspond with historical levels of air pollution. The study population was drawn from parents of children attending elementary school in each site. Information was obtained by means of a questionnaire modified from the 1966 BMRC questionnaire. The analysis was based on 5416 white long-term residents without occupational exposure to irritant dust and fumes. Confounding factors, including smoking status, age, level of education of head-of-household and crowding within the home, were examined. Smoking was found to be the most important factor in determining the level of severity of CRD. The effect of air pollution showed differential patterns among the smokers and nonsmokers. Among the smokers, no air pollution effect was observed. However, among nonsmokers, a statistically significant difference was observed among females. Further, among male nonsmokers a similar pattern was observed, but the effect was not statistically significant. Other possible factors that could contribute to the difference are discussed.

Adolescent↗
PubMedDate not supplied

Longitudinal study of acute respiratory diseases in Rio de Janeiro: occurrence of respiratory viruses during four consecutive years.

The occurrence of different viruses in nasopharyngeal secretions from children less than 5 years old with acute respiratory infections (ARI) was investigated over a period of 4 years (1982-1985) in Rio de Janeiro. Of the viruses known to be associated with ARI, all but influenza C and parainfluenza types 1, 2 and 4 were found. Viruses were found more frequently in children attending emergency or pediatric wards than in outpatients. This was clearly related to the high incidence of respiratory syncytial virus (RSV) in the more severe cases of ARI. RSV positive specimens appeared mainly during the fall, over four consecutive years, showing a clear seasonal occurrence of this virus. Emergency wards provide the best source of data for RSV surveillance, showing sharp increase in the number of positive cases coinciding with increased incidence of ARI cases. Adenovirus were the second most frequent viruses isolated and among these serotypes 1, 2 and 7 were predominant. Influenza virus and parainfluenza virus type 3 were next in frequency. Influenza A virus were isolated with equal frequency in outpatient departments, emergency and pediatric wards. Influenza B was more frequent among outpatients. Parainfluenza type 3 caused outbreaks in the shanty-town population annually during the late winter or spring and were isolated mainly from outpatients. Herpesvirus, enterovirus and rhinovirus were found less frequently. Other viruses than RSV and parainfluenza type 3 did not show a clear seasonal incidence.

Acute Disease↗
PubMed1984

Changes in clinical status and lung functions of patients with chronic respiratory diseases over 10 years.

After a period of 10 years the authors reexamined the respiratory health status of 381 dust-exposed males. Of the lung function values examined Raw, RV/TLC%, VC, TGV and PaO2 were found to be of significant prognostic importance. Among the radiological changes characteristic of silicosis the most serious B-C category, among the respiratory complaints dyspnoea accompanied by regular cough and expectoration, and among the physical changes extended rhonchi and rales accompanied by an emphysematous thorax are to be considered as most essential with respect to prognosis. Smoking habits significantly affected the total death rate, but did not prove to be significant with regard to respiratory death. In the development of bronchial obstruction recurrent febrile respiratory diseases proved to be more important than smoking habits and mild bronchitic complaints.

Bronchitis↗
PubMedDate not supplied

[Macrolides. Antiinflammatory and immunomodulator effects. Indication in respiratory diseases].

This article reviews the basics and the clinical implications of the immunomodulatory effects of macrolides in different respiratory diseases. In addition to their antiinfective properties, some macrolides possess immunomodulatory effects (14 member ring). These macrolides have been used successfully to treat diffuse panbronchiolitis, a progressive inflamatory disease and may be very useful in the treatment of asthma, chronic bronchitis, chronic sinusitis, nasal polyps, otitis media with effusion, cystic fibrosis and bronchiectasis. We present the basic and clinical work supporting its chronic use. We will need future double blind controlled trials to determine the long term efficacy of macrolides for the treatment of chronic inflammatory airway diseases, as well as development of resistance, how to improve side effects ratio and the duration of effects after cessation of treatment.

Anti-Inflammatory Agents↗
PubMed1988

The transmural potential difference (tmpd) of the bronchial mucosa in children with chronic nonspecific respiratory diseases (CF- and non-CF-children).

In 49 children with chronic nonspecific respiratory diseases (CNSRD) of them 6 with Cystic Fibrosis (CF), 18 with extrinsic bronchial asthma and 25 children with relapsing or chronic bronchitis, the tmpd were measured in the tracheobronchial system (bronchoscopy under general anaesthesia). The tmpd differed statistically highly significant (p less than 0.001). In asthmatics with significant eosinophilia in the bronchial secretions of the main bronchus we found a tmpd of 26.2 (+/- 9.2) mV, in bronchitics of 18.7 (+/- 6.2) mV and in CF-children receiving routinely N-acetylcysteine 6.1 (+/- 1.8) mV. Since the local application of this drug produced an additional immediate decrease of the tmpd in CF-children this suggests that such drugs, the presence or absence of eosinophils in the secretions, the products of intermediate cell metabolism or the different pathogenic process could be responsible for the varying values of the tmpd in the respiratory tract.

Acetylcysteine↗
PubMed2004

Environmental mycological study and respiratory disease investigation in tussah silk processing workers.

This study presents the results of an investigation of respiratory symptoms, pulmonary function and chest X-ray examinations, and analysis of antibodies to fungi of 197 tussah silk-processing workers and 40 control workers. An industrial hygiene survey and environmental mycological studies were also conducted. The dust concentrations in tussah silk processing workshops were less than 5.1 mg/m(3) on average, with a maximum of 7.8 mg/m(3) below the national health limit of 10 mg/m(3). Most dusts in all tussah silk processing workshops contained less than 1.2% silica. Numbers of isolated fungi in tussah silk processing workshops [755-6,544 cfu/m(3) (colony forming unit/m(3)), were significantly higher than those in control environments (63-472 cfu/m(3)). The prevalences of respiratory symptoms in tussah silk processing workers were higher than those in control workers. The prevalences of respiratory symptoms in exposed male non-smoking workers were 44.4% with chronic cough, and 38.9% with chronic phlegm respectively, which were significantly higher than those (12.5%, 12.5% respectively) in male non-smoking control workers (p<0.05). The prevalences in exposed male smoking workers were 42.9% with dyspnea, and 38.1% with chest tightness respectively, which were significantly higher than those (16.7%, 8.3% respectively) in male smoking control workers (p<0.01). The prevalences of respiratory symptoms in exposed female workers were 25.3% with chronic cough, 38.0% with chronic phlegm, 31.0% with dyspnea, and 29.1% with chest tightness respectively, which were significantly higher than those (10.0%, 10.0%, 10.0%, 5.0% respectively) in female control workers (p<0.01). Fifteen exposed workers often suffered from fever. Five X-rays were abnormal and four cases had nodular or patchy shadows. The prevalences of pulmonary function abnormalities in the exposed female group were significantly higher than those in control groups (p<0.01). The OD(450 nm) values for antibodies to fungi in tussah silk processing workers were significantly higher than those of control workers (p<0.05). The positive rates of anti-fungal antibodies in tussah silk-processing workers were also significantly higher than those of control workers (p<0.01). The results suggested that fungi might be one of the main allergens in respiratory diseases in the tussah silk processing workers.

Adult↗
PubMed2003

Prevalence of left-handedness among patients with different respiratory diseases.

We investigated the prevalence of left-handedness among patients with different respiratory diseases. Hand preference was assessed using the modified Edinburg Handedness Inventory. There was a statistically significant decline in left-handedness with shortened life span in patients. Difference among the rates of left-handedness in different pulmonary diseases was significant. The rate of left-handedness was lowest in patients with chronic obstructive pulmonary disease (2.14%) and pneumonia (2.04%) and highest in patients with asthma (12.96%). The results suggest that left-handed subjects may be protected from certain pulmonary diseases while being more susceptible to others.

Adolescent↗
PubMed1962

Mold sensitivity in the allergic respiratory diseases.

A study to determine the role of mold allergens in the allergic respiratory diseases was made by reviewing the skin sensitivity reactions to molds of 257 consecutive cases of asthma and/or rhinitis in southwestern British Columbia. Failure to adequately seek out and to treat even minor mold allergy was noted to be a frequent cause of therapeutic failure or of only limited success. Apparently bearing a consistent relation to age and being most prevalent in the mature adult, allergy to fungi appeared to develop slowly and insidiously. The incidence of mold sensitivity was 78.5% and exceeded that of house dust sensitivity by 3.1%. Evidence of clinical sensitivity was present in excess of 52.4% of mold-sensitive patients. Asthmatic patients showed a greater incidence of sensitivity to molds and to multiplicity of species than did patients with rhinitis only. The hypothesized evolution of rhinitis to asthma appeared to be paralleled by the acquisition of sensitivity to increasing numbers of species of fungi. This suggests that the development of sensitivity to multiple mold species may be an etiologic factor in the production of the asthmatic state.

Adult↗
PubMedDate not supplied

[The effect of immunotherapy with the VP-4 multicomponent vaccine in children with frequent acute respiratory diseases and obstructive bronchitis].

The results of prolonged observations on children with frequent acute respiratory diseases (ARD), subject to immunoprophylaxis with the use of polycomponent vaccine (VP-4), prepared from the antigens of opportunistic microorganisms, are presented. The vaccine was introduced to 30 children in 3 intranasal administrations and 6-8 oral administrations. The morbidity rate of the children was registered and their clinical status was evaluated for a year after the introduction of vaccine VP-4. As revealed in these observations, the frequency of ARD cases among the immunized children decreased 3 times or more in comparison with that among the same children, registered during a year prior to the introduction of the vaccine. In addition to a decrease in the frequency of ARD cases, a decrease in their duration and in the number of antibiotic administrations, as well as in the necessity of hospitalization, were also registered.

Acute Disease↗
PubMed1980

[Immunoglobulins A, M, G, and E in children with acute viral respiratory diseases and the croup syndrome].

Children with croup appearing in the presence of acute viral respiratory diseases (AVRD) show an increase in the IgM content in their blood sera during the first days of the disease followed by a decrease, and an increase in the IgG and IgE levels during the convalescence period. No essential shifts in the content of IgA have been observed. The total content of the immunoglobulins in children with croup, was lowered as compared to that in AVPD patients having no croup which is, probably, of a certain pathogenic importance. The increased content of IgE revealed in the blood sera of children with croup indicates the presence of an allergic component in this disease.

Acute Disease↗
PubMed2001

[Diagnostic and therapeutic value of fiberbronchoscope for the adult in the children with respiratory diseases].

OBJECTIVE: To understand the diagnostic and therapeutic value of fiberbronchoscope for the adult in the children with respiratory diseases. METHODS: The results of diagnostic and therapeutic use in 107 child cases using fiberbronchoscope for adult were analysed. RESULTS: Pathogenic diagnosis was acquired in 107 cases; 17(17/21) cases of bronchial foreign bodies were extracted; 22 cases underwent bronchoalveolar lavage locally. CONCLUSION: Various type of BF of fiberbronchoscope for adult can be used in children at various ages, and to diagnose the child's diseases. Fiberbronchoscope for adult is safe and effective in the removing of foreign body and reliable in the treatment of atelectasis caused by inflammation, post-operation, and aspiration of foreign bodies. Fiberbronchoscope for adult can replace fiberbronchoscope for child unless the latter is used generally.

Adolescent↗
PubMed1997

The use of Baypamun N in crowding associated infectious respiratory disease: efficacy of Baypamun N (freeze dried product) in 4-10 month old horses.

The efficacy of an immunomodulator, Baypamun N, was tested in 4-10-month-old horses which were exposed to stress by weaning, transport and commingling with yearlings from different breeders (crowding). Verum (n = 26) and placebo animals (n = 27) received three intramuscular injections of the investigational preparations (days 0, 2, 9) starting at the day of commingling in one stable. The incidence of acute respiratory disease was high during the first 4 weeks after commingling. Approximately 50% of all horses showed seroconversion due to field infection by EHV1 and EHV4 during the observation period. The clinical scores in the Baypamun N group were significantly reduced by 40.3% (P < 0.05) compared to the placebo group. The proportion of horses with purulent nasal discharge during the observation period (4 weeks) was also significantly reduced by 58.7% (P < 0.01) in the Baypamun N group. Fifty per cent of the horses injected with Baypamun N showed no purulent nasal discharge and therefore no signs of complicated disease of the upper respiratory airways in contrast to only 14.8% in the non-protected placebo group. The challenge conditions studied in this investigation were rather severe because of the permanent exposure of Baypamun N treated individuals to the non-separated and untreated horses (n = 51). This indicates that treatment with Baypamun N is a successful tool to avoid severe clinical consequences of stress in young horses.

Acute Disease↗
PubMed1985

A clinical evaluation of the diagnostic usefulness of an early dermal reaction to tuberculin: a failure to distinguish between tuberculosis and other respiratory disease.

An early (6-8 hour) reaction to RT23 tuberculin which was previously found to distinguish between patients with active tuberculosis and healthy tuberculin positive individuals failed to distinguish between such patients and those with other respiratory diseases. It also failed to distinguish between radiologically active and inactive cases of tuberculosis. Such early reactions were frequent among healthy hospital workers but not among other healthy subjects.

Diagnosis, Differential↗
PubMed1990

[The results of using the molecular hybridization of nucleic acids in the complex study of nasopharyngeal smears from patients with influenza and other acute respiratory diseases].

A complex study of samples obtained from patients with influenza and other acute respiratory diseases has revealed that the laboratory methods used in this study can be rated in the following order according to their sensitivity: isolation of the virus in chick embryos, analysis of seroconversions in the hemagglutination inhibition test, immunofluorescent determination of viral antigens, determination of viral antigens by enzyme immunoassay (EIA), detection of RNA-containing viral structures by means of molecular hybridization. From the point of view of the possibility of documenting influenza A in patients, the best results are achieved by the combination of molecular hybridization and EIA techniques: 90% and more of all cases. A rational scheme for the examination of samples obtained from patients with a view to epidemiological study, including both traditional and new rapid diagnostic methods, is proposed.

Acute Disease↗
PubMedDate not supplied

Changing patterns in neonatal respiratory diseases.

Using the current Nottingham Health District, England, as a geographically defined population we have investigated the changing patterns of neonatal respiratory diseases. We have categorized all newborns who developed a respiratory problem during either 1977 or between April 1, 1983, and March 31, 1984 using a system based on that of Hjalmarson (Acta Paediatr Scand 1981; 70:773-783). There has been no change in the incidence of any of the disease types. However, the gestation of babies in two groups, idiopathic respiratory distress syndrome (IRDS) and minimal respiratory disturbance (requiring added oxygen for less than 6 hours), has shown a significant reduction. Overall, mortality for infants developing IRDS has shown a slight decrease, and for infants between 29 and 32 weeks gestation, mortality has shown a significant reduction. Overall, requirements for oxygen therapy and ventilation have shown a threefold increase, while hours in receipt of continuous positive airways pressure (CPAP) have increased sevenfold.

England↗
PubMed1996

The role of corticosteroids in respiratory diseases of children.

Glucocorticosteroids are potent anti-inflammatory agents and have an important role in a variety of respiratory diseases. Although their exact mode of action is unknown, it is thought that they exert their effects by binding to cytoplasmic glucocorticoid receptors. In certain conditions, such as asthma, the value of steroids cannot be questioned, and inhaled steroids have revolutionized management. In other situations, such as interstitial lung disease, the true role of steroids is still to be defined. In the management of diseases such as tuberculosis, the use of steroids is solely based on anecdotal experience.

Adrenal Cortex Hormones↗
PubMed1978

Serum IgE in atopic dermatitis: relationship to severity of cutaneous involvement and course of disease as well as coexistence of atopic respiratory diseases.

Serum IgE concentrations were determined according to the radioimmunosorbent technique (RIST, Phadebas) on 116 adult patients with atopic dermatitis of varying severity and activity. Geometric mean IgE levels of patients with atopic dermatitis were significantly higher compared with the mean level of ninety-three non-atopic adult subjects without parasitic infestation. Severity of the atopic dermatitis was highly correlated to the levels of serum IgE. Severe chronic cases with ever-recurrent exacerbations show the most extreme values. In the moderate forms of atopic dermatitis, coexistent bronchial asthma causes a greater increase in the IgE values. Among the mild or abortive forms higher IgE levels were found in cases with allergic rhinitis than in the cases with 'pure' atopic dermatitis. Other findings in connection with IgE in atopic dermatitis are summarized. The pathogenetic significance of IgE in the cutaneous changes is briefly discussed.

Adolescent↗