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  • 1
    Electronic Resource
    Electronic Resource
    Basal serum gastrin concentrations before and after eradication elicobacter pylori infection measured by sequence specific radioimmunoassays (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Alimentary pharmacology & therapeutics 8 (1994), S. 0 
    Details
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: Helicobacter pylori infection of the antral mucosa is responsible for an increase in basal and stimulated serum gastrin. In the present study we have investigated whether gastritis induced by H. pylori is responsible for abnormalities in the processing of gastrin in dyspeptic patients.Methods: Basal serum gastrin was measured by radioimmunoassay before, 5 weeks, and 1 year after anti-H. pylori therapy in 73 H. pylori positive functional dyspeptic patients. Three region-specific antisera were used, specific for the biologically active carboxy-terminal part, the biologically inactive aminoterminal part of gastrin 1–17, and for the nonsulphated tyrosyl residue in gastrin 1–17.Results: Basal serum gastrin levels were markedly (P 〈 0.01) decreased 5 weeks and 1 year after successful eradication of H. pylori (n= 39) but not in the patients in whom treatment failed (n= 34). A decline of gastrin was observed for each of the three radioimmunoassays. Conclusion: The decrease of serum gastrin levels in all three radioimmunoassays after a successful eradication of H. pylori does not point to major changes in the processing of gastrin. These results suggest that G-cells in the antral mucosa are not functionally affected by the inflammation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2036.1994.tb00324.x
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of indomethacin on intragastric pH and meal-stimulated serum gastrin secretion in rheumatoid arthritis patients (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Alimentary pharmacology & therapeutics 7 (1993), S. 0 
    Details
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effects of oral indomethacin on intragastric pH and serum gastrin were investigated in rheumatoid arthritis patients. Nine patients (1 male, 8 female) without a history of peptic ulcer disease and 6 patients with a history of peptic ulcer disease (5 male, 1 female) were studied. To obviate Helicobacter pylori infection as a confounding factor, only patients with positive H. pylori serology were included. After a 5-day period of placebo treatment and after a 5-day period of indomethacin (50 mg t.d.s.; total dose 750 mg), 24-h intragastric pH and basal and meal-stimulated serum gastrin levels were measured in a double-blind placebo controlled cross-over study.There were no differences in the median 24-h pH values between placebo and indomethacin irrespective of peptic ulcer disease history. Indomethacin resulted in a higher basal and stimulated gastrin response than placebo in patients with a history of peptic ulcer disease. The basal and incremental responses were lower in patients with a history of peptic ulcer disease than in patients without a history of peptic ulcer disease, both during indomethacin and placebo. The same basal and stimulated incremental serum gastrin responses were found during placebo and indomethacin treatment in patients without a history of peptic ulcer disease. No correlation was established between median 2-h post-prandial intragastric pH and post-prandial incremental serum gastrin concentration. We conclude that indomethacin does not influence the intragastric pH of rheumatoid arthritis patients irrespective of history of peptic ulcer disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2036.1993.tb00112.x
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  • 3
    Electronic Resource
    Electronic Resource
    Anxiety, depression and psychotropic medication use in patients with persistent upper and lower gastrointestinal symptoms (2005)
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 21 (2005), S. 0 
    Details
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background:  Limited information is available about anxiety, depression and psychotropic medication use in patients referred for gastrointestinal endoscopy.Aim:  To determine anxiety and depression and its association with endoscopic findings in a representative sample of patients with persistent gastrointestinal symptoms prior to endoscopy.Methods:  Patients referred to the hospital for endoscopy between February 2002 and February 2004 were asked to score anxiety and depression on the Hospital Anxiety and Depression Scale 2 weeks prior to endoscopy. Information about endoscopic diagnoses was obtained from medical files.Results:  A total of 1298 subjects was studied (600 upper gastrointestinal endoscopies and 698 lower gastrointestinal endoscopies). Patients referred for upper gastrointestinal endoscopy used most psychotropic agents (24%; odds ratio = 3.1; 95% confidence interval = 2.3–4.2), especially patients with an organic abnormality when compared with patients without an organic abnormality (42% versus 8%; odds ratio = 8.6; 95% confidence interval = 5.4–14.0). Patients with colonic polyps were more anxious (odds ratio = 1.7; 95% confidence interval = 1.0–2.9) and depressed (odds ratio = 1.8; 95% confidence interval = 1.1–3.1) than other patients referred for lower gastrointestinal endoscopy.Conclusions:  There is no difference in anxiety nor depression between patients with and without organic abnormalities at endoscopy. Patients with colonic polyps are more anxious and depressed than other patients referred for lower gastrointestinal endoscopy. Psychotropic medication use is highest among patients with an organic abnormality in the proximal gastrointestinal tract.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2036.2005.02435.x
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  • 4
    Electronic Resource
    Electronic Resource
    Meta-analysis: the influence of pre-treatment with a proton pump inhibitor on Helicobacter pylori eradication (2005)
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 21 (2005), S. 0 
    Details
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background : There is much debate about the influence of pre-treatment with a proton pump inhibitor on Helicobacter pylori eradication. The few studies investigating the influence of pre-treatment on triple and quadruple therapies did not find differences in eradication rates. However, the high eradication rates make it difficult to study factors associated with therapy failure in small populations. In order to overcome this problem we performed a meta-analysis.Methods : The literature was searched in order to identify randomized clinical trials comparing modern triple/quadruple therapies for H. pylori eradication without pre-treatment with a proton pump inhibitor with exactly the same regimen with pre-treatment. The overall risk difference (with − without pre-treatment) was calculated by pooling the risk differences of the individual studies weighted by the inverse of their variances.Results : Nine studies, investigating a total of 773 patients, were identified. There was considerable variation regarding therapy regimen and duration. Pooled eradication rates were 81.3% (312 of 384) for patients with pre-treatment and 81.2% (316 of 389) for patients without pre-treatment. The (weighted) overall risk difference was 0.1% (95% CI: −5%; 5%).Conclusion : Pre-treatment with a proton pump inhibitor does not influence H. pylori eradication.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2036.2005.02329.x
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  • 5
    Electronic Resource
    Electronic Resource
    Estimating the cost of lost productivity in dyspepsia (1998)
    Oxford UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 12 (1998), S. 0 
    Details
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In the field of gastrointestinal disease, productivity costs are highly relevant because work loss is substantial in dyspeptic patients. Productivity costs are normally calculated by multiplying days absent valued by gross earnings. This, however, might lead to an overestimation.〈section xml:id="abs1-2"〉〈title type="main"〉Aim:To use a conservative approach to calculating productivity costs, taking absence compensating mechanisms into account.〈section xml:id="abs1-3"〉〈title type="main"〉Methods:Patients who visited their general practitioner for the first time with dyspeptic complaints and patients who were known to have persistent dyspeptic complaints were enrolled in two studies. In total, 136 patients completed a questionnaire about their employment situation, absence from work and absence compensating mechanisms.〈section xml:id="abs1-4"〉〈title type="main"〉Results:Sixty-six of the respondents had a paid job, of which 25 (38%) reported absence from work during the previous 4 weeks (average 3.0 days, 1.9 days related to dyspeptic complaints). More than 50% of the employed respondents answered that absence could be compensated for by colleagues, and only in 8% of the cases was absence compensated for by overtime. Using our conservative approach, only one-quarter of the productivity costs remained, compared to the current approach of valuing each day absent as a loss of productivity.〈section xml:id="abs1-5"〉〈title type="main"〉Conclusions:We suggest using both the current and the conservative approaches, analogous to the principles of sensitivity analysis, to avoid overestimation of productivity costs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2036.1998.00376.x
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  • 6
    Electronic Resource
    Electronic Resource
    Characterization of molecular orientation in polymeric products by Fourier transform infrared spectroscopy using diffuse reflectance optics (1991)
    s.l. : American Chemical Society
    Macromolecules 24 (1991), S. 4278-4280 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00015a008
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  • 7
    Electronic Resource
    Electronic Resource
    Interleukin 10 Release During Endotoxaemia in Chimpanzees: Role of Platelet-Activating Factor and Interleukin 6 (1996)
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 43 (1996), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Interleukin (IL-)10 has been demonstrated to inhibit endotoxin-induced production of a number of pro-inflammatory cytokines. The present study sought to compare the appearances in the circulation of IL-10, IL-6 and IL-8, and to assess the roles ofendogenously produced platelet-activating factor (PAF) and IL-6 in IL-10 release during endotoxaemia in chimpanzees. Intravenous injection of endotoxin (lot EC-5, 4 ng/kg, n = 8) induced a transient rise in serum IL-10concentrations, peaking after 2 h (213 ± 70 pg/ml; P 〈 0.05). No correlations existed between peak IL-10 levels, and peak IL-6 and IL-8 levels. Neither infusion of the specific PAF antagonist TCV-309(n = 4), nor infusion of a neutralizing anti-IL-6 monoclonal antibody (n = 4) influenced endotoxin-induced IL-10 release. IL-10 release elicited by injection of endotoxin is not mediated by PAF or IL6. Tom van der Poll MD, Academic Medical Center, Department of Internal Medicine, F4222, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3083.1996.d01-12.x
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  • 8
    Electronic Resource
    Electronic Resource
    Fusarium resistance in Gladiolus: Selection in seedling populations (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 116 (1997), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A test to select Fusarium resistant seedlings of Gladiolus is described. Seedlings of 37 populations, obtained from an incomplete diallel between eight parents with different levels of Fusarium resistance, were used. Significant differences in Fusarium infection between and within populations were detected. Most of the descendants selected had a resistant G. dalenii genotype as one of the parents. The resistance level of the parents was associated with the general combining ability for Fusarium resistance based on the seedling test. Implications for resistance breeding are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1997.tb00997.x
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  • 9
    Electronic Resource
    Electronic Resource
    Screening of Tomato Somaclones for Resistance to Bacterial Canker (Clavibacter michiganensis subsp. michiganensis) (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 107 (1991), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: To facilitate testing large numbers of tomato soma-clones for resistance to bacterial canker, a fast screening procedure was developed. Two inoculation methods were investigated, i.e. excision with an infected scalpel of I) one cotyledon of 2-week-old seedlings, and II) the first true leaf of 3-week-old seedlings, followed by applying a drop of inoculum on the wound. Inoculation by method II discriminated well between populations of partially resistant and susceptible tomato genotypes. A criterion for the selection of single, putatively resistant plants, based on rating scores of the severity of wilting symptoms, was proposed and tested with plants of a Lycopersicon peruvianum accession with a relatively high level of resistance to bacterial canker. Progenies of 279 somaclones, derived from tissue explants of the susceptible tomato cultivar ‘Moneymaker’, were evaluated for resistance. The presence of somaclonal variation for morphological characters in these populations was previously shown. However, no differences were detected between the somaclone population and controls in either mean susceptibility or distribution of plants over disease severity categories. Moreover, plants with major increases in resistance were not detected. These results suggest that the potential of somaclonal variation as a source of resistance to bacterial canker may be limited.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1991.tb01206.x
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  • 10
    Electronic Resource
    Electronic Resource
    Calculated fluid evolution path versus fluid inclusion data in the COHN system as exemplified by metamorphic rocks from Rogaland, south-west Norway (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of metamorphic geology 11 (1993), S. 0 
    Details
    ISSN: 1525-1314
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Abstract Fluid evolution paths in the COHN system can be calculated for metamorphic rocks if there are relevant data regarding the mineral assemblages present, and regarding the oxidation and nitrodation states throughout the entire P-T loop. The compositions of fluid inclusions observed in granulitic rocks from Rogaland (south-west Norway) are compared with theoretical fluid compositions and molar volumes. The fluid parameters are calculated using a P-T path based on mineral assemblages, which are represented by rocks within the pigeonite-in isograd and by rocks near the orthopyroxene-in isograd surrounding an intrusive anorthosite massif. The oxygen and nitrogen fugacities are assumed to be buffered by the coexisting Fe-Ti oxides and Cr-carlsbergite, respectively. Many features of the natural fluid inclusions, including (1) the occurrence of CO2-N2-rich graphite-absent fluid inclusions near peak M2 metamorphic conditions (927° C and 400 MPa), (2) the non-existence of intermediate ternary CO2-CH4-N2 compositions and (3) the low-molar-volume CO2-rich fluid inclusions (36–42 cm3 mol−1), are reproduced in the calculated fluid system. The observed CO2-CH4-rich inclusions with minor N2 (5 mol%) should also include a large proportion of H2O according to the calculations. The absence of H2O from these natural high-molar-volume CO2-CH4-rich inclusions and the occurrence of natural CH4-N2-rich inclusions are both assumed to result from preferential leakage of H2O. This has been previously experimentally demonstrated for H2O-CO2-rich fluid inclusions, and has also been theoretically predicted. Fluid-deficient conditions may explain the relatively high molar volumes, but cannot be used to explain the occurrence of CH4-N2-rich inclusions and the absence of H2O.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1525-1314.1993.tb00153.x
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