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  • 1
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: The major allergenic component of bee venom is phospholipase A2 (PLA2). Methods: In this study, PLA2 was used to analyze and enrich PLA2-binding cells from peripheral blood by high gradient magnetic cell sorting. Results: In normal donors, the frequency of allergen (PLA2)-binding cells among peripheral blood mononuclear cells (PBMC) as determined by flow cytometry is below 0.1%, whereas in bee-venom-allergic patients, PLA2-binding cells are readily detectable at frequencies of up to 2.3%. In severely bee-venom-allergic patients, many basophilic granulocytes are present, as defined by anti-CD9, CD25, and CD38 mAb, comprising up to 95% of the PLA2-binding cells. From blood of allergic and normal donors, about equal absolute numbers of allergen-binding CD19/21-positive B cells can be enriched. Severe anaphylactic reactions (Mueller grade IV) and failure of or adverse reactions during immunotherapy are associated with high numbers of circulating allergen-binding basophils. Interestingly, in the patients studied, the number of PLA2-binding basophilic granulocytes did not markedly change during rush immunotherapy and up to 6 months of maintenance immunotherapy. Conclusions: The specific and reproducible enrichment of PLA2-binding cells provides a new tool for the analysis and monitoring of effector cells in bee-venom-allergic patients with immediate-type hypersensitivity.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1076
    Keywords: Key words pertussis ; attack rate ; household ; adult ; erythromycin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The objective of this study was to compare the spread of pertussis in children and adults being secondary contacts after household exposure. The study was nested in an efficacy trial of an acellular pertussis vaccine. The spread of the disease was also monitored with respect to gender and antibiotic therapy. A total of 453 index cases, of which 133 were monitored for adult disease, fulfilled the WHO definition of pertussis. They had contacts to 173 unvaccinated children aged 6–47 months, and a total of 101 adults with pertussis were followed. Detection of the bacteria, or a significant increase of specific antibodies confirmed the diagnosis. Secondary spread of the disease was assumed, when a household member coughed for 7 days or more and had laboratory evidence for pertussis. Crude attack rates (AR) were 69% in children and 31% in adults (P 〈 0.05). AR in children were independent of gender but more women than men (P = 0.02) were affected in those households where the index case was a child. Erythromycin treatment of the index case reduced the AR in exposed toddlers from 80% to 57% (P = 0.06), and in exposed adults from 40% to 21% (P= 0.2). Erythromycin therapy in contacts did not alter the clinical course of the disease significantly. Conclusions In a household study of pertussis, 69% of children and 31% of adults (more women than men) contracted the disease. Erythromycin reduced the number of infections in household contacts, but did not alter the clinical course in those who contracted pertussis.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Während viele Berichte belegen, daß Pertussis eine häufige Krankheit auch im Erwachsenenalter ist, gibt es nur wenige Studien zum klinischen Verlauf der Krankheit jenseits der Kindheit. Im Rahmen einer Haushalt-kontaktstudie zum Nachweis der Wirksamkeit einer azellulären Pertussis-Vakzine wurden in einem Studienzentrum mit bekannt niedriger Pertussis-Durchimpfungsrate Erwachsene mit Keuchhusten identifiziert und Symptome erfragt. Innerhalb von 2 Jahren wurden 257 Patienten mit Pertussis in 121 Familien gefunden. Davon waren 79 Erwachsene (30,7%) im Alter zwischen 19 und 83 Jahren (Durchschnittsalter: 36 Jahre). Das Verhältnis männlich zu weiblich betrug 1:1,8. Husten wurde von 91% der Erwachsenen angegeben (durch-schnittliche Dauer: 54 Tage). Er dauerte in 80% der Fälle ≥ 21 Tage an. Inspiratorischer Stridor war selten (8%), dagegen war der Husten häufig von Erbrechen und/oder Würgreiz gefolgt (53%) oder störte den Schlaf der Patienten (52%). Dies ist die erste Studic, in der anfallsweise auftretender Schweißausbruch als Symptom bei Pertussis beschrieben wird (14%). Über pharyngeale Symtome, (37%), Influenza-ähnliche Symptome (30%), Niesanfälle (22%), Heiserkeit (18%), schmerzhafte Sinus (16%) und Kopfschmerzen (14%) wurde ebenfalls berichtet. Komplikationen wurden bei 23% der erwachsenen Patienten beobachtet. Unabhängig vom Alter sollte die mikrobiologische Diagnostik bei allen symptomatischen Kontaktpersonen eines Patienten mit Pertussis und ebenso bei jedem Patienten mit lang anhaltendem Husten konsequent durchgeführt werden, damit die weitere Ausbreitung des Erregers zu einem möglichst frühen Zeitpunkt verhindert werden kann.
    Notes: Summary There is increasing evidence that pertussis occurs frequently in adults, but there is limited information on the clinical course of this disease beyond childhood. A household contact study on the efficacy of an acellular pertussis vaccine was used to study the symptoms of pertussis in adults. Among 257 patients with pertussis identified in 121 families during a two-year period in one study center with a low whole-cell pertussis-vaccine uptake, 79 (30.7%) were adults, aged 19–83 years (mean age: 36 years) with a 1:1.8 male to female ratio. Ninety-one percent of the adults suffered from coughing (mean duration: 54 days), and in 80% this cough lasted ≥ 21 days. Whoops were rare (8%), whereas cough followed by vomiting and/or choking (53%) and cough disturbing sleep (52%) were common. This is the first report to describe sweating attacks as symptom of pertussis (14%). Pharyngeal symptoms (37%), influenza-like symptoms (30%), sneezing attacks (22%), hoarseness (18%), sinus pain (16%) and headaches (14%) were also observed. Various complications were seen in 23% of the patients. In order to minimize the spread of the organism, micro-biological diagnostics should be vigorously applied to all symptomatic contacts of a patient with pertussis but also to all patients with long lasting cough — irrespective of age.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To evaluate the reactogenicity and immunogenicity of aHaemophilus influenzae type b conjugate vaccine (HbOC) and of a tricomponent acellular pertussis vaccine (DTaP) when injected simultaneously into either contralateral arms or into contralateral thighs, 110 infants were enrolled to receive three doses of DTaP at 3, 4, and 5 months and two HbOC doses at 3 and 5 months of age. Administration of either of the two vaccines into arms was associated with significantly more local side effects than administration into thighs. There was no difference in geometric mean concentration (GMC) values for any of the four vaccine antigens between subjects who had been vaccinated into arms or thighs. After immunization, all children had protective antibody titers to diphtheria toxin. While post vaccination the mean anti-tetanus toxoid GMC was ≥ 1.25 IU/ml, there was no significant rise as compared to the GMC before vaccination. GMCs of antibodies against the various pertussis antigens were similar to those observed before with the same DTaP vaccine. The simultaneous administration of DTaP and HbOC was safe and immunogenic irrespective of the site of vaccine administration, but significantly more local reactions occurred when vaccines were injected into arms.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-1561
    Keywords: Sitobion avenae ; Aphididae ; aphids ; hydroxamic acids ; DIMBOA ; catalase ; cytochrome c oxidase ; peroxisomes ; mitochondria ; xenobiotics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 2,4-Dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA), a hydroxamic acid involved in the resistance of cereals to aphids, was administered to adult individuals of the aphid Sitobion avenae in artificial diets. Effects on the cellular metabolism were inferred from the evaluation of several organelle marker enzymes. Catalase from peroxisomes and cytochrome c oxidase from mitochondria increased their activities about twofold when aphids were fed with 2 mM DIMBOA. The role of these enzymes in the metabolizing of xenobiotics by aphids is discussed. Biochemical and cytochemical evidences for the presence of peroxisomes in aphids are reported here for the first time.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical microbiology & infectious diseases 14 (1995), S. 451-454 
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The isolation of a strain ofBordetella for which the species could not be determined but which most closely resembledBordetella avium is reported. The strain was isolated in mixed culture from an ear swab of a patient suffering from chronic otitis media. The bacterium showed the typical biochemical reactions ofBordetella avium but differed in antimicrobial resistance pattern, protein and fatty acid composition, and DNA-DNA and DNA-rRNA hybridization. Further studies will clarify the taxonomic status of this strain within theBordetella-Alcaligenes ribosomal RNA cluster.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical microbiology & infectious diseases 17 (1998), S. 37-40 
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The role ofAcinetobacter baumannii in infections in ventilated preterm infants was evaluated in 15 colonized infants (11 male, 4 female) in a pediatric intensive care unit. These cases were randomly matched by birth weight and gestational age with ventilated non-colonized controls (8 male, 7 female). Case records were reviewed for signs and symptoms of infection. Colonized infants were ventilated significantly longer (p〈0.05) than controls, and had body temperatures of 〉37°C for a significantly longer period of time (p〈0.05). No other parameter of infection differed significantly between the groups. The duration of intensive care treatment did not differ between cases and controls, nor did the weight gain during intensive care treatment. No fatalities occurred in either group.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical microbiology & infectious diseases 18 (1999), S. 341-345 
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  This study was performed to evaluate the sensitivity of immunoglobulin (Ig)G and IgA antibodies to pertussis toxin and filamentous hemagglutinin in diagnosing pertussis from a single serum sample. The pertussis group was defined according to the World Health Organization pertussis case definition. The control group coughed for 21 days or more but had no microbiological or serological evidence of Bordetella infection. Both cohorts were divided into infants (〈12 months of age), toddlers (1–4 years) and school children (5–10 years). There were 525 subjects in the pertussis group and 321 in the control group, with an even distribution of genders. IgG and IgA antibodies to pertussis toxin and filamentous hemagglutinin were measured in a standardized enzyme immunoassay. Antibody levels beyond the 95 percentile of the control cohort were regarded as indicative of recent contact, setting the specificity level at 0.95. Acute serum samples drawn between 1 week and 3 weeks after the onset of coughing showed a low sensitivity (2–19%) for diagnosing pertussis. In convalescent samples taken 5–10 weeks after the onset of symptoms, detection of IgG anti-pertussis toxin was the best single test, with a sensitivity of 61%, 65%, and 74% in infants, toddlers and school children, respectively. A combination of IgG anti-pertussis toxin and IgA anti-filamentous hemagglutinin using age-specific reference values had a sensitivity of 81–89% in diagnosing pertussis from a single serum sample taken 5–10 weeks after the beginning of symptoms.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical microbiology & infectious diseases 14 (1995), S. 1029-1038 
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Since their introduction one or more decades ago, aminoglycosides have generally been administered in multiple daily (i.e. twiceor thrice-daily) dosing regimens. However, nephrotoxicity can be reduced in animal models by administering the same total daily dose as one large dose instead of as multiple small doses. In addition, in vitro and in vivo studies that considered the impact of dosing regimens on efficacy suggest that once-daily dosing is equally or more effective compared to multiple daily dosing. Once-daily versus multiple daily dosing regimens have been compared for amikacin, netilmicin, and gentamicin in 24 randomized, clinical trials including a total of 3,181 patients. An analysis of these studies revealed superior results for once-daily regimens with respect to clinical efficacy (89.5 % vs. 84.7%, p〈0.001) as well as bacteriological efficacy (88.6% vs. 83.4%, p〈0.01). No statistically significant differences were noted for toxicity. Nevertheless, both nephrotoxicity and ototoxicity occurred less frequently during once-daily dosing (4.5% vs. 5.5% and 4.2% vs. 5.8%, respectively). Finally, once-daily dosing is more economical, since less nursing time and infusion material are required and the efforts for drug monitoring can be reduced. In conclusion, amikacin, netilmicin, and gentamicin can be administered once a day.
    Type of Medium: Electronic Resource
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