The utilization of the current combination of in vitro, in vivo and PCR assays for the identification of adventitious viruses in production cells has a limited range of detection. While Next Generation Sequencing (NGS) has a broader breadth of detection, it is unable to differentiate sequences from replicating viruses versus background inert sequences. In order to improve NGS specificity, we have designed a new NGS approach which targets subsets of viral RNAs only synthesized during cell infection.
View Article and Find Full Text PDFMicrophase separation of a polystyrene-block-polyisoprene-block-polystyrene triblock copolymer thin film under confined conditions (i.e., graphoepitaxy) results in ordered periodic arrays of polystyrene cylinders aligned parallel to the channel side-wall and base in a polyisoprene matrix.
View Article and Find Full Text PDFPhys Rev E Stat Nonlin Soft Matter Phys
July 2007
We investigate axisymmetric spin coating of power law and Ellis fluids. The flow is driven by centrifugal force, gravity and surface tension. For power law and Ellis models a single equation for the fluid film height is obtained.
View Article and Find Full Text PDFBackground: Endothelin-1 (ET-1) has fibrogenic and inflammatory properties. Its pathogenic role in pulmonary fibrosis and certain inflammatory airway diseases is now well known. Its production is, in part, triggered by infectious processes.
View Article and Find Full Text PDFAm J Respir Crit Care Med
June 2000
Bronchiolitis obliterans syndrome (BOS) is the major complication limiting survival of lung transplant recipients (Tx patients). The mechanisms underlying this fibrotic process are not known. We assessed IGF-1 and IGFBP-3 expression, critical mediators in different models of pulmonary fibrosis, in nine Tx patients.
View Article and Find Full Text PDFBackground: Chronic lung rejection (CLR) induces a fibroproliferative disorder leading to the occlusion of small airways. It has emerged as the major factor limiting the survival of lung transplant recipients. Predictive markers of CLR are lacking, and its diagnosis is generally ascertained when the fibrosis process is irreversible.
View Article and Find Full Text PDFAlthough studies of families, inbred populations and twins have established that asthma has a hereditary basis, little evidence has shown that intrinsic asthma has an increased familial occurrence. To document this issue, we compared the prevalence of asthma in families of intrinsic asthmatics, extrinsic asthmatics and non-asthmatics. The intrinsic asthma group included those with negative skin tests to common aero-allergens (n = 117).
View Article and Find Full Text PDFAm Rev Respir Dis
August 1990
This investigation was undertaken to assess the effectiveness of an enzyme-linked immunosorbent assay (ELISA) using A60 antigen in ascertaining diagnosis in hospitalized patients suspected to have pulmonary tuberculosis (TB) but with negative sputum stains. Cultures were performed to confirm active or inactive disease. IgG and IgM antibody activity was determined by adding a 1:100 dilution of serum to plates coated with A60 antigen.
View Article and Find Full Text PDFIn this study, we evaluated the prevalence of systemic reactions to hymenoptera stings in an adult general population, 20-60 years old. The protocol included a standardized questionnaire, skin tests to venom in subjects reporting a history of systemic reaction, and in subjects reporting a history of severe local and systemic reactions, as well as in a control group, a radioallergosorbent test (RAST) to hymenoptera venoms. According to the questionnaire, 1.
View Article and Find Full Text PDFIn a double-blind randomized study 60 patients with either irritative cough due to seasonal respiratory disorders or chronic cough of any etiology were treated with either butamirate citrate linctus (Sinecod, Zyma) or with clobutinol syrup (Silomat, Boehringer, Ingelheim) for a period of 5 days at a dose regimen of 3 tablespoons daily. Efficacy was assessed based on the reduction of the severity as well as frequency of the cough and on the global opinion of the physician. Both groups showed highly significant improvements for the severity and frequency parameters (p less than 0.
View Article and Find Full Text PDFTo evaluate the role of exposure to furred pets on respiratory allergic disorders, we interviewed 10,338 adults, selected at random from communities of South-East France. All subjects answered a standardized questionnaire related to asthma and perennial rhinitis and to present or past exposure to furred pets and respiratory symptoms related to this exposure. Besides, a sample of the population had a blood analysis for detection of specific IgE directed against common aero-allergens (Phadiatop).
View Article and Find Full Text PDFThe sulfites have anti-oxygen and anti-microbial properties, which explain their great use in the food and drug industry. They may be responsible for anaphylactoid type episodes or more often asthmatic crises. 4 to 8% of asthmatics are sensitive to sulfites.
View Article and Find Full Text PDFIn this double-blind, multicentre study the antihistamine acrivastine was compared with terfenadine for the treatment of seasonal allergic rhinitis. The study was divided into three periods which together lasted 56 days. Patients (n = 83) were randomly assigned treatment with either 8 mg acrivastine three times daily or 60 mg terfenadine twice daily.
View Article and Find Full Text PDFTo compare the heredity of asthma among families of intrinsic, extrinsic and control subjects, we have studied the siblings and offsprings of the 3 groups of subjects (using a standardized questionnaire). The results shown that asthma was genetically transmitted but the clinical manifestations appeared later among the relatives of intrinsic than among the relatives of extrinsic asthmatic patients.
View Article and Find Full Text PDFAsthma deaths are uncommon, but have recently increased in some countries due to problems in the management of the disease. Morbidity rates show large variations, which can be attributed to differences in defining the disease, but also to genuine variations, with a trend towards less asthma in northern Europe. It has been suggested that allergic diseases as a whole, and asthma in particular, may exhibit an upward secular trend.
View Article and Find Full Text PDFMuscle relaxants are widely used for general anesthesia and may be responsible for IgE-dependent anaphylactic reactions (AR). A controversial issue in the field of drug allergy is whether ARs are more frequent or severe in atopic subjects. Thus, we performed a case-control study comparing the distribution of various clinical and biologic signs of atopy.
View Article and Find Full Text PDFThe prevalence of systemic reactions to hymenoptera stings in adults is unknown. To elucidate this point we interviewed 2.067 persons aged from 20 to 60 years who attended a medical screening centre.
View Article and Find Full Text PDFIn a double-blind, randomised investigation in 305 in-patients, roxithromycin and doxycycline were compared in two groups of patients with low respiratory tract infections. Three hundred cases were analyzable for safety and 276 for clinical efficacy. Mean duration of treatment was 9 days in both groups.
View Article and Find Full Text PDFDo subjects living in high altitude where house-dust mites are known to be uncommon exhibit a lower prevalence of asthma and allergy to house-dust mites? To answer this question, we compared the prevalence rates of asthma and skin reactions to house-dust mites in two towns with contrasted environments: Marseille, located on the seashore, and Briançon, 1350 m in altitude. The study population consisted of a random sample of 4,008 people in Marseille and 1,055 people in Briançon. All subjects received a home questionnaire, and a sample of patients and asymptomatic subjects had a skin-prick test evaluation.
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