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To contribute more comprehensive information about the characteristics of asthma, this article analyzed patients served by the University of Alabama at Birmingham Comprehensive Asthma Program. Their physicians rated one fifth of these patients as having "severe" asthma with the remainder about equally divided between "moderate" and "mild". One in two first received a diagnosis of asthma ten or more years previously. Common comorbidities were hypertension, obesity, rhinitis, bronchitis, sinusitis, and arthritis. One half had visited an emergency room or been hospitalized for asthma in the past year. Inhaled bronchodilators and continuous theophylline were the most commonly prescribed medications. Side effects, especially tachycardia and insomnia, were common and almost exclusively associated with theophylline or corticosteroid therapy. Spirometric assessment showed chronic airflow obstruction in those with more severe asthma. Prevalence of respiratory symptoms, intensity of medication regimen, incidence of side effects, and health care utilization increased as asthma severity increased.
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PMID:Characteristics and correlates of asthma in a university clinic population. 220 37

Objective: To determine factors affecting sleep disturbances in children.Background: Factors affecting sleep disturbances have been studied extensively in adults, but relatively few studies have been done in children.Methods: As part of the twelfth survey of the Tucson Epidemiologic Study of Obstructive Airways Disease (TESOAD, 1991-1992), children, ages 3-14, of adult cohort members were administered a health questionnaire which contained items related to sleep problems as well as items related to respiratory diseases and symptoms. Participants were classified as having sleep disturbances if they reported disorders of initiating and maintaining sleep (DIMS), excessive daytime sleepiness (EDS) or snoring. Potential factors affecting sleep included age, gender, obesity, asthma, other bronchial problems, cough and sputum production, wheezing and rhinitis.Results: The overall prevalence rates were 16.8, 4 and 22.9% for DIMS, EDS, and snoring, respectively. We found a significantly higher prevalence of DIMS in 11-14-year-old girls (30.4%) and snoring (32.3%) in 3-6-year-old boys. Certain respiratory factors were more prevalent in children with sleep disturbances. Multivariate analysis revealed that risk factors for DIMS included female gender, age 11-14 and wheezing. The risk for EDS was increased in those children with cough and sputum production. Cough and sputum production also were risk factors for snoring as was rhinitis and age 3-6.Conclusions: We conclude that in children as in adults, respiratory symptoms are associated with sleep disturbances. Further, the increased insomnia seen in adult women may begin in early adolescence.
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PMID:Factors affecting sleep disturbances in children and adolescents. 1076 52

Cough is a common symptom that affects a large proportion of the general population. The aim of this investigation was to identify determinants of nocturnal, nonproductive and productive cough in population samples from different countries. In a cross-sectional international population survey, 18,277 subjects (20-48 yrs) from 16 countries answered an interview-led questionnaire. Total and specific immunoglobulin-E was measured and spirometry was performed. Three types of cough were defined: nocturnal, nonproductive and productive cough. The relation of the independent variables to cough was estimated by means of logistic regression for each centre or country and combined across centre or country by random-effects meta-analysis. The median prevalence of nocturnal, nonproductive and productive cough in the different centres was 30.7%, 10.2% and 10.2%, respectively. Nocturnal and nonproductive cough were related to female sex (adjusted odds ratio (OR)=2.08 and 1.27, respectively), while nocturnal and productive cough were related to rhinitis (OR=1.46 and 1.61, respectively). All three types of cough were related to asthma, tobacco smoking, environmental tobacco smoke and obesity. Females are more likely to report nocturnal and nonproductive cough than males. Cough was related to treatable disorders, like asthma and rhinitis, as well as avoidable factors, such as tobacco smoking and environmental tobacco smoke.
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PMID:Determinants of cough in young adults participating in the European Community Respiratory Health Survey. 1171 69

Acute phase reactants have been implicated for their involvement as proinflammatory molecules in various inflammatory diseases. However, little is known regarding their role in the allergic airway disease. The aim of the present study was to examine the blood concentrations of three acute-phase proteins, namely C-reactive protein (CRP), serum amyloid A (SAA) and fibrinogen in patients with allergic rhinitis and asthma. Three study groups include: non-smoker allergic rhinitis (n = 50), non-smoker asthma (n = 20), and non-allergic, non-smoker healthy control subjects (n = 20). Patients who have had recent upper or lower respiratory tract infection and trauma, any rheumatological illnesses, malignancy or obesity were excluded. Blood samples were obtained from all the patients and control subjects and were analyzed for serum CRP, SAA and plasma fibrinogen. The mean CRP and fibrinogen values in the rhinitis and asthma groups were not significantly different when compared to the control group. However, the mean SAA levels of both groups were found to be significantly higher than those of the control group (p = 0.002 for rhinitis, p = 0.02 for asthma). There was no significant correlation between the FEV(1) values and the levels of the serum markers. This study demonstrates that acute phase reactant SAA rises in patients with allergic rhinitis and patients with asthma. We therefore suggest that SAA may have a role in the inflammatory airway disease.
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PMID:Acute phase reactants in allergic airway disease. 1550 20

This article reviews the development of our knowledge of the actions of histamine which have taken place during the course of the 20th century. Histamine has been shown to have a key physiological role in the control of gastric acid secretion and a pathophysiological role in a range of allergic disorders. The synthesis of, and pharmacological studies on, selective agonists and antagonists has established the existence of four types of histamine receptor and histamine receptor antagonists have found very important therapeutic applications. Thus, in the 1940s, H(1)-receptor antagonists ('the antihistamines') yielded and still provide valuable treatment for allergic conditions such as hay fever and rhinitis. In the late 1970s and 1980s, H(2)-receptor antagonists (in the discovery of which the two authors were personally involved) revolutionised the treatment of peptic ulcer and other gastric acid-related diseases. The H(3)-receptor antagonists, although available since 1987, have been slower to find a therapeutic role. However, the discovery of nonimidazole derivatives such as brain-penetrating H(3) antagonists has provided drugs that are in early-phase clinical trials, possibly for application in obesity, and a variety of central nervous system disorders, such as memory, learning deficits and epilepsy. Finally, the most recently (1999) discovered H(4) receptor promises the potential to provide drugs acting on the immunological system with possible applications in asthma and inflammation.
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PMID:Histamine and its receptors. 1640 96

Asthma is a common and serious illness with suboptimal outcomes of care. Epidemiological studies show certain comorbidities occurring more frequently than expected with asthma, with some being associated with poor control and a differential response to therapy options. This review summarizes the evidence of clinically important comorbidities, focusing on the best-explored conditions, including rhinitis and rhinosinusitis, anxiety and depression, obesity, gastroesophageal reflux, smoking and dysfunctional breathing. The evidence of epidemiological and pathophysiological associations for these comorbidities is explored, and the practical therapeutic implications are considered. Comorbidities are important for clinicians treating asthma as they may be markers of patients at risk of poor outcomes, they may point to specific effective treatment options and they are important to researchers as possible confounding factors in clinical trials.
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PMID:Impact of comorbidities on asthma. 2047 23

Difficult to control severe asthma is characterized by the persistence of inacceptable symptoms of asthma despite a continuous treatment with at least high doses of inhaled steroids and long acting bronchodilators. The diagnosis is done after a period of observation and some investigations that will allow confirm the diagnosis of asthma, eliminate alternative diagnosis and etiological forms that would be difficult to treat intrinsically (allergic broncho-pulmonary aspergillosis, Churg and Strauss disease, chronic eosinophilic pneumonia, occupational asthma). At the end of this period devoted to diagnosis a systematic approach is set up to take care of these patients. Therapeutic education includes action plans and measures for triggering factors avoidance in order to prevent exacerbations. Comorbidities such as rhinitis, nasal polyposis, gastro-oesophageal reflux and obesity are taken into account. Lastly, the treatment must be adapted according to the patient's preferences and aims, and to the asthma severity. Ultimately in steroid-dependent asthma, the lowest efficient dose is tracked continuously. For these patients, new molecules are needed.
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PMID:[Difficult to control severe asthma]. 2156 12

Both allergic disorders and obesity keep increasing in industrialized countries. Even though a strong association between obesity and allergy- related diseases has been reported in several studies, no published data show a scientific and firm link in-between the two conditions. In general, obesity and weight gain have been associated with an increased risk of asthma and allergic rhinitis. Asthma, allergic rhinitis and obesity have a common inflammatory pattern that could therefore justify their association. In fact, the chronic inflammation that characterizes the increase in white adipose tissue typically pushes the immune system toward a Th2 pattern. Such a polarization might, consequentially, worsen a pre-existing allergic disease or even stimulate the evolution from a sensitization to a respiratory form of allergy. Several studies have been published on the role of different adipokines on allergic diseases. We focus our review on the role of adipokines on asthma and allergic rhinitis.
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PMID:Adipokines and their role in allergies. 2203 80

In May 2011, the illegal use of the phthalate plasticizer di(2-ethylhexyl) phthalate in clouding agents for use in foods and beverages was reported in Taiwan. This food scandal has caused shock and panic among the majority of Taiwanese people and has attracted international attention. Phthalate exposure is assessed by ambient monitoring or human biomonitoring. Ambient monitoring relies on measuring chemicals in environmental media, foodstuff and consumer products. Human biomonitoring determines body burden by measuring the chemicals, their metabolites or specific reaction products in human specimens. In mammalian development, the fetus is set to develop into a female. Because the female phenotype is the default, impairment of testosterone production or action before the late phase may lead to feminizing characteristics. Phthalates disrupt the development of androgen-dependent structures by inhibiting fetal testicular testosterone biosynthesis. The spectrum of effects obtained following perinatal exposure of male rats to phthalates has remarkable similarities with the human testicular dysgenesis syndrome. Epidemiological studies have suggested associations between phthalate exposure and shorter gestational age, shorter anogenital distance, shorter penis, incomplete testicular descent, sex hormone alteration, precocious puberty, pubertal gynecomastia, premature thelarche, rhinitis, eczema, asthma, low birth weight, attention deficit hyperactivity disorder, low intelligence quotient, thyroid hormone alteration, and hypospadias in infants and children. Furthermore, many studies have suggested associations between phthalate exposure and increased sperm DNA damage, decreased proportion of sperm with normal morphology, decreased sperm concentration, decreased sperm morphology, sex hormone alteration, decreased pulmonary function, endometriosis, uterine leiomyomas, breast cancer, obesity, hyperprolactinemia, and thyroid hormone alteration in adults. Finally, the number of phthalate-related scientific publications from Taiwan has increased greatly over the past 5 years, which may reflect the health effects from the illegal addition of phthalate plasticizer to clouding agent in foodstuff over the past two decades.
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PMID:Food safety involving ingestion of foods and beverages prepared with phthalate-plasticizer-containing clouding agents. 2211 10

Panchakarma is the most essential part of Ayurveda treatments. It is preventive, preservative, promotive, curative and rehabilitative therapy. Ayurveda believes in strong relationship between macrocosm and microcosm and states that the seasonal changes will influence the biological systems resulting into the accumulation and aggravation of particular Dosha in a particular season like accumulation and aggravation of Kapha in Hemant Rutu (winter season) and Vasant Rutu (spring season) respectively, accumulation and aggravation of Pitta in Varsha Rutu (rainy season) and Sharad Rutu (autumn season) respectively. Vasantika Vamana is done in spring season approximately in the month of March and April for the elimination of vitiated Kapha Dosha which in turn helps to prevent the forth coming Kapha disorders and associated Pitta disorders or diseases originating or settled in the place of Kapha like bronchial asthma, allergic bronchitis, rhinitis, sinusitis, migraine, hyperacidity, indigestion, anorexia, obesity, overweight, dyslipidemia, diabetes mellitus, acne vulgaris, psoriasis, eczema, urticaria etc. In this study, a total of 89 persons were registered and 69 volnteers/patients undergone classical Vamana Karma without any major complications. Average minimum, maximum, total dose and total days of Snehapana were 36.40 ml, 187.21 ml, 578.59 ml and 5.01 days respectively. Average quantity of Madanaphala, Ksheera, Yashtimadhu Phanta and Lavanodaka was 5.81 g, 1130.29 ml, 3202.9 and 2489.13 ml respectively. The results were encouraging; hence, further studies may be conducted including large population in this direction.
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PMID:A study on Vasantika Vamana (therapeutic emesis in spring season) - A preventive measure for diseases of Kapha origin. 2240 99


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