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  • 1
    Electronic Resource
    Electronic Resource
    Spin-polarized electron gun for electron spectroscopies (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 3333-3338 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A spin-polarized electron gun for electron spectroscopies is described in detail. The gun consists of an electron source based on a negative electron affinity GaAs photocathode coupled to an appropriate transport electron optics. The gun has been designed with the aid of ray-tracing analysis and then accurately tested. It produces a transversely polarized (P0∼27%) electron beam at variable energy with a small spot size and angular spread (less than 2 mm and 5°, respectively). Such performances are attained up to sample currents as high as 10 μA for the whole beam energy range (8–50 eV). As an application we present data on spin-dependent absorbed current spectroscopy from bcc Fe films epitaxially grown on Ag(100).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142549
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  • 2
    Electronic Resource
    Electronic Resource
    Cetirizine treatment of allergic cough in children with pollen allergy (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 52 (1997), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Cetirizine, an antihistamine widely used in the treatment of allergic rhinoconjunctivitis, also has antiallergic activity. The present study aimed to evaluate cetirizine as a treatment for children with allergic cough due to pollen allergy. This was a parallel-group, double-blind, placebo-controlled, randomized study. Twenty children with pollinosis were enrolled: they were subdivided into two groups receiving a 1-month treatment during the pollen season. The following variables were monitored: 1) clinical symptoms and respiratory data (spirometry and PEF) evaluated at baseline and at the end of the study by allergists and by a daily diary card, and 2) pollen count. This study shows that cetirizine treatment reduces cough intensity (P 〈 0.05) and frequency (p 〈 0.01). In conclusion, cetirizine does clinically improve cough due to pollen allergy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1997.tb01233.x
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  • 3
    Electronic Resource
    Electronic Resource
    Levocetirizine improves nasal obstruction and modulates cytokine pattern in patients with seasonal allergic rhinitis: a pilot study (2004)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 34 (2004), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Allergic rhinitis is characterized by an IgE-dependent inflammation. Nasal obstruction is related to allergic inflammation. Some antihistamines have been demonstrated to be capable of improving this nasal symptom.Objective The aim of this pilot study was to evaluate nasal symptoms, nasal airflow, inflammatory cells, and cytokine pattern in patients with seasonal allergic rhinitis (SAR), before and after treatment with levocetirizine, desloratadine, or placebo.Methods Thirty patients with SAR were evaluated, 27 males and three females (mean age 26.9±5.4 years). All of them received levocetirizine (5 mg/day), desloratadine (5 mg/day), or placebo for 2 weeks. The study was double-blind, parallel-group, placebo-controlled, and randomized. Total symptom score (TSS) (including: rhinorrhea, nasal itching, sneezing, and nasal obstruction) was assessed before and after treatment. Rhinomanometry, nasal lavage, and nasal scraping were performed in all subjects before and after treatment. Inflammatory cells were counted by conventional staining; IL-4 and IL-8 were measured by immunoassay on fluids recovered from nasal lavage.Results Levocetirizine treatment induced significant symptom relief (P=0.0009) and improved nasal airflow (P=0.038). Desloratadine also relieved TSS (P=0.01), but did not affect nasal airflow. Levocetirizine significantly reduced eosinophils (P=0.029), neutrophils (P=0.005), IL-4 (P=0.041), and IL-8 (P=0.02), whereas desloratadine diminished IL-4 only (P=0.044). Placebo treatment did not significantly affect any evaluated parameters.Conclusions This pilot study demonstrates the effectiveness of levocetirizine in: (i) relieving nasal symptoms, (ii) improving nasal airflow, (iii) reducing leucocyte infiltration, and (iv) diminishing cytokine levels. These findings are the first evidence of the effectiveness of levocetirizine in SAR.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.2004.01960.x
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  • 4
    Electronic Resource
    Electronic Resource
    Cytokine pattern in allergic and non-allergic chronic rhinosinusitis in asthmatic children (2002)
    Oxford, UK : Blackwell Science, Ltd
    Clinical & experimental allergy 32 (2002), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Rhinosinusitis represents one of the most common chronic diseases. The association of rhinosinusitis with asthma has been frequently reported. Eosinophils and Th2 cells play a pathogenic mechanism in asthma.Objective The aims of the study were to evaluate the cytokine pattern in chronic rhinosinusitis in asthmatic children and to compare the findings in allergic vs. non-allergic asthmatics.Methods Thirty-five asthmatic children were evaluated, 19 males and 16 females, with an average age of 8.7 years. All children were asthmatic and suffered from chronic rhinosinusitis. Twenty were allergic and 15 were non-allergic. Ten healthy children were studied as normal controls. Evaluated parameters were the levels of the following cytokines: IL-1β, IL-4, IL-6, IL-8, IL-12, IFN-γ and TNF-α. Cytokines were recovered from rhinosinusal lavage and measured by immunoassays. Nasal cytology was also performed in all subjects and inflammatory cells were counted by conventional staining.Results Allergic subjects showed a significant increase of IL-4 (P 〈 0.01) and TNF-α (P 〈 0.05) and a significant decrease of IL-12 (P 〈 0.05) and of IFN-γ (P 〈 0.0001), whereas IL-1β, IL-6 and IL-8 were not significantly increased. Non-allergic children showed a significant increase of IL-4 (P 〈 0.05) and a significant decrease of IFN-γ (P 〈 0.0001), IL-12 was not significantly decreased, and IL-1β, IL-6 and IL-8 were not significantly increased. A significant inflammatory infiltrate was present in all asthmatic children. Significant correlations were demonstrated between IL-4 and IL-12 (P 〈 0.001), IL-12 and IFN-γ (P 〈 0.001), IL-8 and neutrophils (P 〈 0.01), and TNF-α and monocytes/macrophages (P 〈 0.05), in allergic asthmatics. IL-4 and IL-12 were significantly correlated (P 〈 0.05) as well as IL-8 and neutrophils (P 〈 0.01) in non-allergic asthmatics.Conclusion This study shows that allergic asthmatic children with chronic rhinosinusitis have a typical Th2 cytokine pattern, but also non-allergic asthmatic children share a similar pattern. These findings would suggest the existence of a common pathophysiological mechanism shared by upper and lower airways and are consistent with the concept of united airways disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2002.01315.x
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  • 5
    Electronic Resource
    Electronic Resource
    Cetirizine treatment of rhinitis in children with pollen allergy: evidence of its antiallergic activity (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 27 (1997), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Cetirizine is an antihistamine, largely used in the treatment of allergic rhinoconjunctivitis, which also exerts anti-allergic activity.Objectives To evaluate cetirizine as treatment for children with rhinitis due to pollen allergy, and to evaluate its anti-allergic activity in such a clinical condition.Methods The study was designed as parallel groups, double-blind, placebo-controlled, randomized. Twenty allergic children were enroled and subdivided in two groups, receiving a 4 week treatment during the pollen season. The following parameters were monitored: clinical symptoms evaluated by the allergist before and after treatment and by the patients through a daily diary card, inflammatory cells count, expression of ICAM-1 on nasal epithelial cells, inflammatory mediator levels in nasal Iavage and peripheral blood before and after treatment, and pollen counts.Results This study shows that cetirizine treatment is able to reduce: clinical symptoms (P 〈 0.01), inflammatory cell infiltrate (P 〈 0.03), ICAM-1 expression on epithelial cells (P 〈 0.05), and soluble ICAM-1 (P 〈 0.05) and ECP (P 〈 0.05) in nasal lavage.Conclusion Cetirizine is able to clinically improve nasal symptoms due to pollen allergy and to reduce allergic inflammation, which is related to allergen exposure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1997.tb01153.x
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  • 6
    Electronic Resource
    Electronic Resource
    Airway function and nasal inflammation in seasonal allergic rhinitis and asthma (2004)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 34 (2004), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Allergic rhinitis (AR) and asthma are frequently associated and characterized by a Th2-dependent inflammation. Nasal and bronchial obstruction may be objectively measured.Objective The aim of this study was to evaluate the relationships among upper and lower airway function and nasal inflammation in subjects with seasonal allergic rhinitis (SAR) and asthma.Methods Twenty out-patients (12 males and eight females, mean age: 23.4+3.6 years) with SAR and asthma were evaluated during the pollen season. All of them showed a moderate–severe grade of nasal obstruction. Total symptom score, rhinomanometry, spirometry, nasal lavage, and nasal scraping were obtained in all subjects. Eosinophils were counted by conventional staining; IL-4 and IFN-γ were measured by immunoassay on fluids recovered from nasal lavage.Results Functional parameters, i.e. nasal airflow and forced expiratory volume in 1 s (FEV1), were correlated with nasal eosinophils (R2〉0.83, P〈0.001). Inflammatory parameters, i.e. eosinophils were correlated with immunological parameters, i.e. IL-4 and IFN-γ levels (R2=0.93, P〈0.001). Nasal symptoms were correlated with nasal airflow (ρ=−0.71, P〈inlineGraphic alt="leqslant R: less-than-or-eq, slant" extraInfo="nonStandardEntity" href="urn:x-wiley:09547894:CEA1970:les" location="les.gif"/〉0.01) and eosinophils (ρ=0.72, P〈0.01). Nasal airflow was correlated with FEV1 (r=0.89, P〈0.0001).Conclusions This study demonstrates the close connection between Th2 cytokines and eosinophil infiltration in the nose. There is also clear evidence concerning the relationships between eosinophils infiltration and cytokines levels. Nasal eosinophils can be regarded as the most important predictors of upper and lower airway functions. These findings constitute first evidence of a relationship among nasal Th2-related inflammation and nasal and bronchial airflow in patients with SAR and asthma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.2004.01970.x
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  • 7
    Electronic Resource
    Electronic Resource
    Nasal endoscopy in asthmatic children: assessment of rhinosinusitis and adenoiditis incidence, correlations with cytology and microbiology (2001)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 31 (2001), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Upper respiratory airway diseases may induce a worsening of asthma. Sinusitis represents one of the most common chronic diseases. The association of asthma and sinusitis varies greatly in different studies, depending on diagnostic procedures.Objective The aims were: (i) to demonstrate that nasal endoscopy may be easily feasible in asthma at paediatric age; (ii) to evaluate the incidence of rhinosinusitis and adenoiditis in children with asthma by nasal endoscopy; (iii) to correlate inflammatory parameters such as cytology and microbiological cultures with nasal endoscopy findings.Subjects and methods One hundred and forty-five asthmatic children were evaluated, 48 males and 97 females, with an average age of 7.27 years. Evaluated parameters were the incidence of rhinosinusal infections in asthmatic children, and the role of: (i) nasal endoscopy, (ii) nasal cytology, and (iii) nasal microbiology in their diagnoses.Results Nasal endoscopy was successfully performed on 128 patients. Twenty-six children had endoscopic rhinosinusitis alone, 10 had adenoiditis alone, and 35 showed endoscopic rhinosinusitis associated with adenoiditis. There were significant correlations between endoscopic rhinosinusitis and adenoiditis (P 〈 0.001), between clinical and endoscopic rhinosinusitis (P 〈 0.001), between endoscopic rhinosinusitis and adenoiditis and microbiology (P 〈 0.05 and P 〈 0.0001, respectively), and between microbiology and cytology (P 〈 0.05).Conclusion This study shows that rhinosinusal infections are common in asthmatic children. Moreover, nasal endoscopy might represent a fruitful tool in the management of asthmatic children.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2001.01057.x
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  • 8
    Electronic Resource
    Electronic Resource
    Seasonal and perennial allergic rhinitis: is this classification adherent to real life? (2005)
    Oxford, UK : Munksgaard International Publishers
    Allergy 60 (2005), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background:  Allergic rhinitis is traditionally subdivided into seasonal (SAR) and perennial (PAR), although the new definitions of persistent and intermittent were recently proposed. We assessed the validity of the traditional classification in a large group of subjects suffering from allergic rhinitis alone.Methods:  Young males referred to a Navy Military Hospital for routine fitness visit, and reporting symptoms of rhinitis alone were selected. According to the sensitization they were subdivided into (i) sensitized to pollens only (seasonal, SAR), (ii) to perennial allergens only (perennial, PAR) and (iii) to both (mixed, MAR). Spirometry, methacholine challenge, severity and characteristics of symptoms were assessed in all participants.Results:  Of 19 325 subjects, 2347 had allergic rhinitis. Seventy-two percent of the subjects had MAR, 17% SAR and 11% PAR. Ocular involvement and irritative symptoms were more frequent in SAR (P 〈 0.03), whereas obstruction was predominant in PAR (P 〈 0.01). Nasal symptoms varied according to the period of the year in SAR (P 〈 0.01) and PAR (P 〈 0.03). An overt bronchial obstruction was detected in 12% of PAR patients, in 7.8% of MAR, and in 4.2% of SAR. forced expiratory volume/1 s was significantly lower during season in SAR patients only (P 〈 0.05). The FEF25–75 was impaired in 22.5% MAR patients, 21% PAR, and 14% SAR, with a seasonal change in SAR (P 〈 0.05) and PAR (P 〈 0.001). Bronchial hyperreactivity was present in 82.2% of PAR, 73.6% of MAR, and 53.5% of SAR, with a seasonal change in SAR (P 〈 0.001) and MAR (P 〈 0.05).Conclusions:  This study provides evidence that up to 80% of allergic rhinitics have a mixed form, and SAR and PAR definitions are poorly adherent to real life. Lung involvement is frequent in patients reporting nose symptoms alone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.2005.00602.x
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  • 9
    Electronic Resource
    Electronic Resource
    Relationships between allergic inflammation and nasal airflow in children with persistent allergic rhinitis due to mite sensitization (2005)
    Oxford, UK : Munksgaard International Publishers
    Allergy 60 (2005), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background:  Allergic rhinitis is associated with Th2-dependent inflammation. Nasal obstruction is the most typical symptom in children with mite allergy.Objectives:  The aim of this study was to evaluate the possible relationships among nasal symptoms, allergic inflammation, including inflammatory cells and cytokine pattern, and nasal airflow in children with persistent allergic rhinitis because of mite sensitization.Methods:  Twenty children (13 males and seven females, mean age 13.4 ± 1.6 years) with persistent rhinitis because of mite allergy were evaluated. All of them had moderate–severe grade of nasal obstruction. Total symptom score (TSS), rhinomanometry, nasal lavage, and nasal scraping were obtained in all subjects. Inflammatory cells were counted by conventional staining; interleukin (IL)-5, and IL-8 were measured by immunoassay on fluids recovered from nasal lavage.Results:  Eosinophils were significantly associated with TSS (R = 74.4%, P = 0.0002), with IL-5 (R = 90.6%, P 〈 0.0001) and with nasal flow (R = −69%, P = 0.0007), but not with IL-8 (R = 0.1%, P = 0.995). Eosinophil levels were shown to independently predict nasal flow (P 〈 0.001), with flow decreasing linearly for increasing eosinophils, together with a significant effect of neutrophils (P = 0.016, linear increase in flow) and a borderline effect of IL-8 (P = 0.063, linear increase in flow).Conclusions:  This study demonstrates the close association between IL-5 concentration and eosinophil infiltration. In addition, there is clear evidence concerning the relationship between eosinophil infiltration and nasal airflow. Thus, nasal eosinophils can be regarded as the most important predictor of upper airway function. These findings constitute first evidence of the relationship between nasal airflow impairment and Th2-related eosinophilic inflammation in children with persistent allergic rhinitis because of mite sensitization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.2005.00664.x
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  • 10
    Electronic Resource
    Electronic Resource
    Evidence of desloratadine syrup efficacy and tolerability in children with pollen-induced allergic rhinitis (2005)
    Oxford, UK : Munksgaard International Publishers
    Allergy 60 (2005), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.2005.00714.x
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