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  • 1
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    German Medical Science; Düsseldorf, Köln
    In:  55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), 1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie; 20040425-20040428; Köln; DOCDI.05.01 /20040423/
    Publication Date: 2004-04-22
    Keywords: ddc: 610
    Language: English
    Type: conferenceObject
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  • 2
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Mouse α4β2 nicotinic acetylcholine receptors (nAchRs) were stably expressed in HEK293T cells. The function of this stable cell line, termed mmα4β2, was assessed using an aequorin-based luminescence method that measures agonist-evoked changes in intracellular calcium. Agonist-elicited changes in intracellular calcium were due primarily to direct entry of calcium through the α4β2 channel, although release of calcium from intracellular stores contributed ˜ 28% of the agonist-evoked response. Agonist pharmacologies were very similar between the mmα4β2 cells and most cell lines that stably express human α4β2 nAchRs. Based on agonist profiles and sensitivity to the antagonist dihydro-β-erythroidine (DHβE), the predominant α4β2 nAchR expressed in the mmα4β2 cells exhibits a pharmacology that most resembles the DHβE-sensitive component of 86Rb+ efflux from mouse brain synaptosomes. However, when evaluated with the aequorin assay, the mmα4β2 nAchR was found to be atypically sensitive to blockade by the presumed α7-selective antagonist methyllycaconitine (MLA), exhibiting an IC50 value of 31 ± 0.1 nm. Similar IC50 values have been reported for the MLA inhibition of nicotine-stimulated dopamine release, a response that is mediated by β2-subunit-containing nAchRs and not α7-subunit-containing nAchRs. Consequently, at low nanomolar concentrations, MLA may not be as selective for α7-containing nAchRs as previously thought.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Sixteen of the 18 Vibrio cholerae rough strains isolated from hospitalised diarrhoea patients were found to contain O1 serotype-specific (wbe) genes and all currently known virulence genes. Expression of the regulatory element ToxR was evident in these strains. Cholera toxin production ability of the rough strains was found to be higher (c. three- to five-fold) as compared to the smooth counterparts and this was transcriptionally regulated. Strains exhibiting the rough phenotype were more amenable to the uptake of CTXφ, which led us to consider that the rough phenotype could play a role in the generation of genetic diversity among V. cholerae strains.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1600-051X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: C1-esterase inhibitor (C1eIn) is an important modulator of complement activation via the classical pathway. Deficiencies or dysfunction involving this inhibitor underlie the condition of angioneurotic oedema.〈section xml:id="abs1-2"〉〈title type="main"〉Aim: The purpose of this report is to describe a female patient who presented at the age of 24 years with an apparently aggressive form of periodontitis and severe oedema, localised to the free gingival tissues. After 21 years of repeated surgical reduction of the gingiva, a diagnosis of C1eIn dysfunction was made.〈section xml:id="abs1-3"〉〈title type="main"〉Methods: Exhaustive serological investigations were performed along with histopathology.〈section xml:id="abs1-4"〉〈title type="main"〉Results: All investigations were unremarkable, until the function of the C1eIn molecule was investigated. These demonstrated a functional activity of only 29% and a raised C1q at 157 mg/l. Subsequent repeated investigation with careful specimen handling demonstrated undetectable levels of C1eIn and normal C1q. A diagnosis of C1eIn dysfunction was made, although at present it is unclear whether this represents an unusual variant of hereditary dysfunctional C1eIn deficiency. The patient was managed by various means, including steriodal and non-steroidal drugs, the latter forming part of her maintenance regime.〈section xml:id="abs1-5"〉〈title type="main"〉Conclusions: To our knowledge, this is the first case of angio-oedema localised to the free gingiva. The role of stress in the acute exacerbations of oedema and bone loss is discussed along with the diagnostic pitfalls associated with this case.
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  • 5
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In order to assess the extent of genomic diversity among Vibrio cholerae O139 strains, restriction fragment length polymorphisms in two genetic loci, rrn and ctx, were studied. Analysis of 144 strains isolated from different regions of Bangladesh and India between 1992 and 1998 revealed the presence of at least six distinct ribotypes (B-I through B-VI) of which three were new ribotypes, and one of these was represented by a nontoxigenic O139 strain. Strains of ribotypes B-I through B-V shared 11 different CTX genotypes (A through K). Antimicrobial resistance patterns of the strains varied independently of their ribotypes and CTX genotypes. Results of this study suggest that V. cholerae O139 is undergoing rapid genetic changes leading to the origination of new variants, and temporal changes in antimicrobial resistance patterns may be contributing to the selection of different variants.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 56 (2001), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Ninety-one patients were randomly allocated to one of two groups. Group A was induced with a single vital capacity breath of 6% (end-tidal) sevoflurane in nitrous oxide–oxygen (2 : 1 l.min−1), whereas group B was induced with intravenous fentanyl 1 µg.kg−1+ propofol 2 mg.kg−1 followed by nitrous oxide–oxygen (2 : 1 l.min−1) and sevoflurane. Induction was considered to have been achieved when the bispectral index value decreased to below 70. Mean induction time in group A (95.2 s, 95% CI 88.5–101.9 s) was longer than group B (70.3 s, 95% CI 66.3–74.3 s; p 〈 0.0001). Mild coughing was more common in group A, but relative hypotension was more common in group B. There was no difference in the emergence times. Thirty minutes after emergence, there was no difference in the incidence of adverse effects, with the exception of essentially mild abdominal pain which was more frequent in group A.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Sixty patients in early labour were randomly allocated to one of three groups. The control group received intrathecal fentanyl 25 µg, the ropivacaine group received intrathecal fentanyl 25 µg and ropivacaine 2.5 mg while the bupivacaine group received intrathecal fentanyl 25 µg and bupivacaine 2.5 mg. The incidence of pruritus was 100% in controls, compared with 85% in the ropivacaine group (not significant) and 75% in the bupivacaine group (p = 0.003). The severity of pruritus was significantly less in the ropivacaine (p = 0.006) and bupivacaine (p = 0.001) groups. Most patients developed pruritus by 30 min. Pruritus above the abdomen was not reduced in patients receiving local anaesthetics. There were no significant differences in the mean pain visual analogue score, systolic blood pressure, maternal heart rate and upper level of reduced pin-prick sensation in the first 30 min. Intrathecal ropivacaine and, more so, intrathecal bupivacaine reduce the incidence and severity of pruritus from intrathecal fentanyl for labour analgesia.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 148 (2003), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary Background Antibiotic resistance is a significant problem both in hospitals and the community. Topical antibiotics are widely used for dermatological problems and this may be leading to the emergence of resistant bacteria. Objective To assess the level of fusidic acid-resistant Staphylococcus aureus inpatients with dermatological problems. Methods All microbiology samples over a 4-month period were tested for antibiotic sensitivities. Patients with cultures positive for S. aureus were studied. Results The study shows 50% of S. aureus isolates from dermatology patients were resistant to fusidic acid. This figure rose to 78% inpatients with atopic eczema. Of patients with fusidic acid-resistant S. aureus isolates, 96% had used a fusidic acid-containing preparation within the previous 6 months. The level of fusidic acid resistance in S. aureus samples cultured from nondermatology patients was only 9·6%, a level significantly below that for dermatology patients (P 〈 0·001). Conclusions High levels of fusidic acid-resistant S. aureus are found in dermatology patients. Inappropriate use of topical antibiotics in dermatology patients leading to fusidic acid resistance may threaten the efficacy of systemic fusidic acid for the treatment of serious S. aureus infections. Education of health professionals and restriction of the use of fusidic acid is needed.
    Type of Medium: Electronic Resource
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