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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 47 (1992), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In 1985 and 1990 postal questionnaires were sent to anaesthetic senior registrars in training in the United Kingdom to determine the extent of higher specialist training in chronic pain management. There were wide variations in training and experience amongst senior registrars. Overall there was little change between 1985 and 1990. In particular the number of anaesthetic senior registrars who felt equipped to undertake a consultant post with an interest in chronic pain management had not increased.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Blood samples were obtained from fetuses and premature babies (n=51) (15-34 weeks gestation) to determine at what stage the fetal immune system was able to produce a positive proliferative response to common allergens. Peripheral blood mononuclear cells (PB MC) were stimulated with the mitogen, phytohaemagglutinin (PHA), and the allergens, house dust mite, cat fur. birch tree pollen, β-lactoglobulin, ovalbumin and bee venom (mellitin). Results were expressed as ratios of stimulated to unstimulated 3H thymidine incorporation, and as percent positive responders. There was an increase in proliferation ratio which correlated with increasing gestational age for PHA (p 〈 0.0001), cat fur (p=0.042), birch pollen (p=0.022) and β-lactoglobulin (p=0, 006). The point in gestation when cells from some individuals began responding to the allergens with a ratio of 2. 0 was at approximately 22 weeks. PBMC proliferative response ratios were higher from samples from babies 〉 22 weeks gestation compared to 〈 22 weeks for the mitogen and all allergens, except mellitin. There was also a greater proportion of positive responders from samples 〉 22 weeks compared to 〈 22 weeks for the mitogen and all allergens, except mellitin. Maternal exposure to birch pollen, which has a discrete season, was assessed to determine whether exposure had occurred at 22 weeks gestation or beyond. Results showed a higher prolifera tive response in infant cells stimulated with birch pollen (p=0.005) and higher proportion of positive responders (p=0.01) in the group of babies whose mothers had been exposed to hirch pollen beyond 22 weeks, compared to those whose mothers had not been so exposed. These results suggest that in utero fetal exposure to an allergen from around 22 weeks gestation may result in primary sensitisation to that allergen, leading to positive proliferative responses, at birth.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Pediatric allergy and immunology 1 (1990), S. 0 
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The multiple allergosorbent chemiluminescent assay (MAST-CLA) is a system to measure total and allergen-specific IgE in human serum by means of a chemiluminescent immuno-enzymatic system. The test has been compared with skin test, RAST and clinical history in 67 atopic, asthmatic children. The individual percentage agreement between MAST-CLA and skin test was grass pollen 67%, tree pollen 82%, cat 76%, dog 84%, house dust mite 87%, alternaria 64%, aspergillus 79%, cladosporium 84%, penicillium 93%, milk 78% and egg 76% and between MAST-CLA and RAST was grass pollen 62%, tree pollen 72%, cat 75%, dog 72% and mite 87%. The total IgE levels on MAST-CLA did not agree with PRIST results. MAST-CLA was randomly duplicated and proved repToducible in 85% of tests. Changes between positive and negative results occurred in only 4% of tests. Clinical history predicted allergy diagnosis accurately in 21 (31. 5%) cases whilst MAST-CLA provided additional information in 14 (21%). MAST-CLA proved least reliable for grass pollen allergy diagnosis, which has prompted a change in allergen composition for this assay. MAST-CLA is a simple in vitro test for specific IgE to 35 allergens which compares favourably with RAST. The variation in correlates with other techniques of allergy diagnosis, however, indicates that there are differences in credibility for each result within the multiple test system.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The homes of 68 atopic asthmatic children were studied to estimate the concentrations of perennial and seasonal aeroallergens (Der pl, Fel d1, grass pollen, tree pollen, Cladosporium, Aspergillaceae and Alternaria) to which children were likely to have been exposed during their first few months of life, by sampling in the child's month of birth. There was a strong association between the presence or absence of the house dust mite allergen Der p1 in the air with the skin test and IgE antibody test results (p 〈 0.001), with a similar association for cat allergen Pel d 1 (p 〈 0.01), when using a low volume sampler (equivalent to the minute tidal volume of a small baby). No significant correlation was found between levels of allergen in carpet dust and air in the same room. There was a strong indication that the presence of a cat at birth was linked with a higher risk of development of allergy to cat, but high levels of Fel d 1 were sometimes found in homes even when there was no cat present, indicating that allergen may be introduced from other sources. The levels of tree pollen were significantly higher in the homes of tree pollen-allergic children than in the homes of patients without this sensitivity (p 〈 0.01); and the degree of sensitivity, determined by RAST, correlated significantly to the level of tree pollen in the home (p 〈 0.001). However, no relationship was found between specific sensitivity and the levels of Cladosporium, Aspergillaceae, Alternaria or grass pollen measured in the homes. The effect of high allergen exposure was most prominent in children under 7 yr and not beyond that age.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Pediatric allergy and immunology 5 (1994), S. 0 
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Flow cytometry was used to analyse the cord blood T cells of 33 babies at high risk ‘HR’ for developing allergy (born to at least one atopic, asthmatic parent), and 10 low risk ‘LR’ babies (born to non-atopic parents), following normal term deliveries. Significantly lower numbers of CD25+, (activated) T cells (p〈0.005) were seen in the cord blood of the HR babies who had developed both allergic symptoms and positive skin prick tests by one year of age when compared with the LR group. CD45RO+ (memory) T cells were detected in both HR and LR babies with a trend for lower numbers of memory cells to be detected in HR infants who later developed allergic symptoms and/or positive skin prick tests. Significantly lower numbers of CD4+/CD45RO+ were seen in the cord blood of HR babies who developed allergic symptoms compared to HR babies who showed no sign of allergy by one year and to the LR babies (p〈0.05 and p〈0.005). The presence of activated and memory T cells at birth implies intra-uterine priming. The significantly lower numbers of memory T cells in the HR babies suggests a suppression of T cell activation or lack of antigenic priming in this group. This prenatal influence on babies born to atopic parents may have important implications with regard to the mechanisms underlying atopic sensitisation.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Pediatric allergy and immunology 7 (1996), S. 0 
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Pediatric allergy and immunology 5 (1994), S. 0 
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Soluble interleukin-2 receptor (sIL-2R) concentrations were measured in the sera of 18 healthy adult volunteers, 40 healthy children aged 5 months - 16 years 8 months and cord blood from 10 babies, using two commercially available ELISA kits (T-cell Sciences and Serotec). In the presence of normal C-reactive protein (CRP) children (aged 0-16 years 8 months) had significantly higher sIL-2R concentrations than adults aged (18-37 years). In children up to the age of 16 years there was a significant negative correlation between age and sIL-2R (r = -0.725 p 〈 0.0001 T-Cell Sciences, r = -0.646 p 〈 0.0001 Serotec). A comparison was also made between the two kits, which indicated that both kits yielded reproducible results but the T-Cell Sciences kit had a larger working concentration range than the Serotec kit. Following 12-h sampling in adult volunteers, a lower concentration of sIL-2R was observed at 4 am compared with 10 am (p = 0.0052) which indicates diurnal variation. These observations emphasize the importance of the study of normals as part of any research, and raises further questions regarding the many factors which influence immune function.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Pediatric allergy and immunology 9 (1998), S. 0 
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Lung function tests, including forced expiratory volume in one second (FEV1), forced expiratory flow at 25–75% of vital capacity (FEF25–75%) and provocation concentrations of histamine which reduce FEV] by 20% (PC20), are used as indicators of airway form and function in bronchial asthma. Recently, markers of eosinophil activation in bronchial lavage and serum have been suggested as a measure of eosinophil mediated inflammation in the airways. These include eosinophil cationic protein (ECP), eosinophil protein X (EPX) (also known as eosinophil derived neuro-toxin) and eosinophil peroxidase (EPO). Similarly, serum tryptase has been used as a marker of mast cell activation in systemic anaphylaxis.Objectives We measured both sets of indices in a group of children with moderately severe asthma to assess the contribution of eosinophil and mast cell mediated events to airflow limitation and bronchial hyperresponsiveness.Methods Forty-eight children aged 5–10 years had spirometric assessments, histamine challenges and blood sampling on the same occasion. After analysis of sera, the indices were compared.Results The eosinophil markers ECP and EPX correlated very well with each other. They showed a moderate negative correlation with PC20 for histamine. EPX was also found to negatively correlate with FEV, and FEF25–75%. Serum tryptase levels showed no such correlates with airway function.Conclusion These results suggest that serum markers of eosinophil activation correlate with airway function in childhood asthma, and may be of value in assessing the severity of the disease. It further supports the notion that childhood asthma has a similar immunopathology to that occurring in adults, with predominance of eosinophil mediated inflammation.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 21 (1991), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study was set up to evaluate the food panel of a multiple specific IgE antibody assay in 67 atopic asthmatic children by comparing it to the conventional radioallergosorbent test (RAST) and skin-prick tests (SPT) and then comparing the results of these investigations with the parents perceptions of food related problems.Fifteen food specific IgE antibodies were measured using the multiple chemiluminescence assay (MAST-CLA). IgE antibodies to five of these food allergens were also measured by conventional RAST and SPTs were performed in 43 using 11 standardized food extracts matched to the multiple allergosorbent chemiluminescent assay (MASTCLA) profile. SPT and MAST-CLA results showed good agreement with one another, range 688-96.7% (average 87%), with significant correlation for most allergens tested. MAST-CLA was discrepant with RAST and/or SPTs in 58/210 (27 6%).A questionnaire was sent to the parents to determine their perception of food related symptoms. Sixty-two (92%) questionnaire replies were received, of which 56% reported symptoms with food. The most frequent symptom perceived to be due to food intolerance was behavioural disturbance. The commonest foods implicated were additives (39%), egg (27%), milk (26%), chocolate (23%) and orange (15%). History, SPT, MAST-CLA and RAST were compared for live allergens in 42 patients (210 values). In 14/210 (6·7%), all the tests were negative despite reported symptoms. Conversely in 49/210 (23·3%) at least one test was positive without symptoms.This study did not support a benefit of multiple antibody testing instead of individually selected RASTs or SPTs. The frequent perception of food related symptoms in these asthmatic children was often not supported by SPT, RAST and/or MAST-CLA. This may be a reflection of the current public concern about food, or of non-IgE mechanisms. These uncertainties can only be resolved by double blind placebo controlled food challenge. The inclusion of food specific IgE antibodies together with inhalant antibodies in a multiple test system for use in atopic asthmatics may be misleading.
    Type of Medium: Electronic Resource
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