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  • 1
    Electronic Resource
    Electronic Resource
    Intermediates in nucleophilic aromatic substitution. XII. Kinetic and equilibrium study of the spiro Meisenheimer complex of 1(.beta.-hydroxyethoxy)-2,4-dinitrobenzene (1974)
    s.l. : American Chemical Society
    The @journal of organic chemistry 39 (1974), S. 1054-1058 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00922a008
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  • 2
    Electronic Resource
    Electronic Resource
    FS09.1
Diacetylmorphine (heroin) allergy (2004)
    Oxford, UK; Malden, USA : Blackwell Publishing Ltd/Inc.
    Contact dermatitis 50 (2004), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Since heroin is delivered to a selected group of drug addicts under supervision of nurses in the Netherlands, we reported about several nurses who presented with work-related eczema and positive patch tests to heroin. To investigate the prevalence of heroin contact allergy among all workers in this heroin delivery project, a study was started using questionnaires. Altogether 31 nurses reported work-related complaints out of 100 who returned questionnaires. Besides reports of eczema, mainly of eyelids (probably airborne) and hands, there were mucosal and respiratory complaints. Patch tests were performed in 25 nurses with complaints; in 9 of them a heroin contact allergy could be confirmed. In 6 out of these 9 nurses this was combined with mucosal or respiratory complaints. There were also 6 nurses with mucosal or respiratory complaints without a contact allergy. Contact dermatitis from opioids, such as morphine and codeine, has been documented among opioid industry workers, nurses, doctors, pharmacists, and in patients. In conclusion heroin appears to be a potent contact allergen, causing contact dermatitis. Mucosal and respiratory complaints however, cannot be explained by this contact allergy; they might be caused by a type-1-allergy to heroin, or by a direct histamine liberating effect. Opioids are known histamine liberators causing urticaria, rhinitis and anaphylactoid reactions; therefore intracutaneous tests with heroin are unreliable. In an ongoing research project it will be attempted to detect specific IgE to heroin in the 12 workers with mucosal or respiratory complaints; within the next few months results will be available.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0105-1873.2004.0309cd.x
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  • 3
    Electronic Resource
    Electronic Resource
    Mite-specific IgE cannot be used as a surrogate for mite exposure (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 50 (1995), 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.1398-9995.1995.tb01193.x
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  • 4
    Electronic Resource
    Electronic Resource
    Cultivation of Fungi in Synthetic and Semi-Synthetic Liquid Medium (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 40 (1985), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Four allergologically important fungi, viz. Aspergillus fumigatus, Alternaria alternata, Penicillium notatum, and Cladosporium herbarum, were cultured in a pure synthetic medium and the patterns of growth as characterized by the pH, protein and carbohydrate concentration of the culture fluid, were studied. A. fumigatus and P. notatum showed a similar growth pattern, characterized by a rapid decrease in the pH of the culture medium (pH 7.4 → 4.0), while proteins were slowly released and saccharose poorly consumed. In contrast, A. alternata and C. herbarum demonstrated a different pattern of growth, in which the pH of the culture hardly changed during incubation. Enrichment of the synthetic medium with yeast extract greatly improved the growth of all four fungi, as was confirmed by the enhanced yield of antigenic material and strongly increased consumption of saccharose. The yeast extract especially changed the growth pattern of A. fumigatus and P. notatum, which now is characterized by three phases. Phase I; fall in pH of the growth medium and excretion of proteins. phase II: increase in pH and fall in protein concentration; phase III; stabilization of pH at alkaline values and renewed excretions of proteins. It is concluded that during cultivation of the fungi, the metabolic state of the culture changes, influencing the antigenic composition of the extracts obtained after different periods of cultivation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1985.tb00887.x
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  • 5
    Electronic Resource
    Electronic Resource
    Mineralized deposits in pulps of incompletely developed permanent monkey incisors after pulpotomy with tungsten carbide fissure burs (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Dental traumatology 10 (1994), S. 0 
    Details
    ISSN: 1600-0595
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract The exposed pulp of incompletely developed permanent incisors of nine monkeys were treated with partial pulpotomy with tungsten carbide fissure burs on an air turbine equipment. The pulps were capped with calcium hydroxide (Dycal®) followed by insertion of conventional amalgam. The results were studied by conventional light microscopy after 1 and 6 months. Rod-like mineralized pulpal deposits were seen in five of the nine animals, in 9 out of 67 teeth, evenly distributed at the two observation times. Also the lengths of the deposits appeared similar, while the thickness had increased markedly after 6 months. After 1 month the presence of a central vessel lumen was observed in the deposits. The results seemed to indicate that the mechanism of formation was an initial pathologic mineralization of the vessel wall, and a growth of the deposits by the elaboration of fibrous, atubular dentin on to the outside of this wall.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-9657.1994.tb00538.x
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  • 6
    Electronic Resource
    Electronic Resource
    Benzene Purification (1922)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 14 (1922), S. 491-491 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50150a009
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  • 7
    Electronic Resource
    Electronic Resource
    House dust mite exposure in asthmatic and healthy children: the difference is carpeting (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Pediatric allergy and immunology 6 (1995), S. 0 
    Details
    ISSN: 1399-3038
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Aim - To determine whether house dust mite (HDM) exposure in living rooms and bedrooms is higher in asthmatic children than in those of age and sex matched healthy children, living in the same area. Methods - Types of floor-coverings were recorded and dust samples were collected by vacuum cleaning the total area of living rooms and bedrooms; Der p I and Der p II per gram fine dust concentrations were assessed. Twenty-five asthmatic children (RAST HDM 〉= class 3, age 6–12 years) and 25 healthy children participated in the study. Results - The frequency of cleaning and prevalence of smooth floor-coverings in bedrooms of asthmatic children were significantly higher. There were no differences in living rooms in this respect. The amount of fine dust/m2 floor space was significantly lower in bedrooms of asthmatic children. Concentrations of HDM were low and no differences in Der p I and Der p II concentrations were observed between the two groups (asthmatic children: Der p I living room: 1.1 (0.04 - 59.4 μg/ g), bedroom: 0.5 (below detection - 19.3 μg/g); nonasthmatic children: Der p I living room: 1.4 (below detection - 27.5 μg/g), bedroom: 0.9 (below detection - 68.8 ug/g. Smooth floor coverings contained significantly less fine dust, Der p I, and Der p II than carpeted floors. Conclusions - Low HDM concentrations are a general finding in Dutch dwellings in the present generation of children.We observed a higher cleaning frequency, and more smooth floor coverings in bedrooms of asthmatic children than of healthy children, yet HDM concentrations were not significantly different. The latter can be explained by the observation that only 40% of the asthmatic children had smooth floor coverings in their bedrooms. Smooth floor coverings contain less fine dust and lower concentrations of Der p I and Der p II than carpeted floors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3038.1995.tb00283.x
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  • 8
    Electronic Resource
    Electronic Resource
    Plasma histamine concentrations and complement activation during house dust mite-provoked bronchia] obstructive reactions (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 13 (1983), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Lung function and histamine levels in peripheral venous plasma samples were followed after challenge with house dust mite allergen. In eight patients the mean maximal histamine concentration showed a significant rise during the early obstructive reaction when compared with the concentrations at similar time intervals after inhalation of a control solution. In nine other patients treatment with disodium cromoglycate (DSCG) caused a significant fall in plasma histamine concentrations indicating that histamine liberation plays u role during the early obstructive reaction and was released from the lung compartment. Histamine during early obstructive reactions compared with the pre-inhalation values did show a rise in mean maximal histamine concentration (1.5-4.1 ng/ml) but this was statistically not significant. During the late reaction neither significant increase in histamine nor inhibition by DSCG was found. Measurement of complement degradation products did not support the role of complement activation during cither early or lute bronchial obstructive reactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1983.tb02591.x
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  • 9
    Electronic Resource
    Electronic Resource
    Sibling effect on atopy in children of patients with asthma (2003)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 33 (2003), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Multiple population studies have shown the presence of a sibling effect on atopic disease. However, it is unclear if the sibling effect is also of importance in subjects who are genetically at high risk for the development of atopy.Objective To study the presence of a sibling effect on markers of atopy (serum total IgE, specific IgE, skin tests) and asthma (bronchial hyper-responsiveness to histamine) in families ascertained through a parent with asthma.Methods First-degree offspring in 200 asthma families were studied (n = 541). Mixed effects regression models were used to account for the dependence of the observations within a family, and to adjust for possible confounding variables.Results Multiple regression analysis showed that having older siblings was inversely related to atopy, defined as ≥ 2, ≥ 3, ≥ 4, or ≥ 5 skin tests (P = 0.07–0.009). In addition, family size (number of siblings) had a significant protective effect on the presence of specific IgE to common aeroallergens (P = 0.03). Exposure to cigarette smoke in the first 3 years of life significantly increased the risk of having specific IgE to common aeroallergens (P = 0.04). No sibling effect was detected for serum total IgE or bronchial hyper-responsiveness to histamine.Conclusions This study shows a protective sibling effect on the presence and severity of atopy but not on bronchial hyper-responsiveness in children who are genetically at risk. The identification of the sibling effect in high-risk families stresses the need to understand the basis of this effect, in order to design future prevention programmes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2222.2003.01591.x
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  • 10
    Electronic Resource
    Electronic Resource
    Seasonal differences in airway hyperresponsiveness in asthmatic patients: relationship with allergen exposure and sensitization to house dust mites (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 The degree of airway hyperresponsiveness in allergic asthmatic patients may be influenced by changes in environmental exposure to inhalant allergens.Objective This study investigates the relationship between seasonal changes in exposure to house dust mite (HDM) allergens and non-specific airway hyperresponsiveness in asthmatic patients with multiple sensitizations to inhaled allergens.Methods In 43 asthmatic patients sensitized to several inhalant allergens, lung function (FEV1), airway hyperresponsiveness (PC20 histamine), serum total IgE, house dust mite (HDM) specific IgE and number of peripheral blood eosinophils were measured during autumn 1990 (September-November) and spring 1991 (March—May). During each season. floor dust samples were collected twice from living- and bedrooms and the concentration of the HDM allergens Der p 1 and Der p 2 determined.Results More severe airway hyperresponsiveness (lower PC20 histamine) during autumn was only found in patients sensitized to HDM(n= 32; autumn: 2.05mg/mL, spring: 4.51mg/mL (geometric means), P 〈0.0 1), whereas in patients not sensitized to HDM (n= 11) similar values were observed in both seasons (3.44 and 4.52 mg/mL. respectively, P= 0.56). More severe airway hyperresponsiveness of HDM sensitized patients in autumn was significantly associated with higher Der p 1 concentrations in floor dust. Aside from airway hyperresponsiveness, seasonal changes in serum total IgE and number of peripheral blood eosinophils were seen in patients sensitized to HDM,Conclusions In allergic asthmatic patients, airway hyperresponsiveness may increase during autumn, depending on sensitization to HDM and an increase of exposure to HDM allergen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.1997.tb01189.x
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