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  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 116 (1997), S. 0 
    ISSN: 1439-0523
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: 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.
    Materialart: Digitale Medien
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  • 2
    Digitale Medien
    Digitale Medien
    Oxford, U.K. and Cambridge, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 43 (1996), S. 0 
    ISSN: 1365-3083
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 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
    Materialart: Digitale Medien
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  • 3
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background : Upper gastrointestinal discomfort decreases the already impaired health status of patients with cardiovascular disease.Aim : To evaluate whether acid suppressive therapy improves health-related quality of life in patients who developed upper gastrointestinal symptoms after starting low-dose acetylsalicylic acid.Methods : In a double-blind, placebo-controlled randomized trail, cardiac patients using low-dose (80 mg) acetylsalicylic acid with (n = 142) and without (n = 90) upper gastrointestinal symptoms were included. Patients with symptoms were treated with rabeprazole or placebo for 4 weeks. At baseline and 4 weeks information about gastrointestinal symptoms and health-related quality of life was assessed.Results : The 73 patients assigned to rabeprazole when compared with 69 patients given placebo reported the same quality of life scores 4 weeks after randomization. The differences in quality of life scores between patients with and without symptoms at baseline remained after 4 weeks. Patients in whom treatment led to complete symptom relief or those who remained symptom-free reported significantly higher scores for Physical Component Summary (P 〈 0.01) and Mental Component Summary (P 〈 0.01), when compared to those with persistent symptoms or new onset symptoms.Conclusion : Proton-pump inhibitor therapy did not improve quality of life. Upper gastrointestinal symptom relief in itself considerably increased quality of life.
    Materialart: Digitale Medien
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  • 4
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 18 (2003), S. 0 
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background : Bacteria and viruses have been detected in the stomach of patients during acid-suppressive therapy.Aim : To investigate whether subjects using acid-suppressive drugs more often develop community-acquired respiratory infections when compared to those who do not use acid-suppressive drugs.Methods : 700 study subjects were recruited during a single week in December 2002. Information on the prevalence of clinical manifestations of infections and complications in the preceding month was assessed by questionnaire. Furthermore, subjects were asked to report antibiotic therapy and physician visits related to possible infection.Results : Questionnaires were returned by 405 subjects (58%). Consumption of acid-suppressive drugs was reported by 91 individuals, of whom 79 used proton-pump inhibitors (20%) and 12 H2-receptor antagonists (3%). Overall, 101 (25%) responders reported clinical manifestations of respiratory infection in the preceding month. Subjects using acid-suppressive drugs were 2.34 times [95% confidence interval (CI) 1.4–4.1] more likely to have clinical manifestations of infection than individuals not using acid-suppressive drugs. Subjects using acid-suppressive drugs visited a physician 3.72 times more often (95% CI 2.1–6.8) for an infection and received antibiotic therapy 4.19 times more often (95% CI 2.2–8.1) in comparison to individuals not using acid-suppressive drugs.Conclusions : Subjects using acid-suppressive drugs more often reported community-acquired respiratory infections in comparison to those who did not use acid-suppressive drugs.
    Materialart: Digitale Medien
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  • 5
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Objective : Patients using acetylsalicylic acid (aspirin) have an increased risk of upper gastrointestinal discomfort. The aim of this study was to assess whether gastric acid suppression improves upper gastrointestinal symptoms in patients using low-dose aspirin for cardiovascular disease.Methods : In a double-blind, placebo-controlled randomised trial, 150 patients using low-dose (80 mg) acetylsalicylic acid with upper gastrointestinal symptoms who had been admitted at the Coronary Care Unit of the University Medical Center Nijmegen were assigned to treatment with rabeprazole (20 mg once daily) or placebo for 4 weeks. Treatment success, defined as complete upper gastrointestinal symptom relief, could be evaluated in 143 patients.Results : At 4 weeks after randomization, 34 of the 73 patients assigned to rabeprazole therapy (47%) as compared with 30 of the 70 patients given placebo (43%) reported complete upper gastrointestinal symptom relief (P = 0.54). Rabeprazole therapy did lead to a 52% improvement of heartburn symptoms [25% vs. 16%; odds ratio (OR) 0.48, 95% confidence interval (CI): 0.24–0.97]. Epigastric pain, regurgitation, bloating and nausea symptoms did not statistically change after treatment. Patients with a history of dyspepsia more often reported treatment success in comparison to those without (75% vs. 40%; OR 0.25, 95% CI: 0.09–0.70).Conclusions : Proton-pump inhibitor therapy significantly reduced heartburn, but not other acetylsalicylic acid associated symptoms.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Oxford UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 16 (2002), S. 0 
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A high level of gastric acid secretion is considered to be a risk factor for reflux oesophagitis or Barrett's oesophagus. Corpus gastritis may have a protective effect on the oesophagus, because of decreased gastric acid output.〈section xml:id="abs1-2"〉〈title type="main"〉Aim:To determine if corpus gastritis is associated with reflux oesophagitis or Barrett's oesophagus.〈section xml:id="abs1-3"〉〈title type="main"〉Methods:Three antral and two corpus biopsies were taken from consecutive patients in whom Helicobacter pylori testing was requested during endoscopy at a single centre between January 1995 and May 1997. Antral and corpus gastritis was studied by histology; H. pylori was studied by histology, culture and CLO test. A regression model was used to test for correlation between reflux oesophagitis, Barrett's oesophagus and risk factors.〈section xml:id="abs1-4"〉〈title type="main"〉Results:During the study period, 676 patients had biopsies taken during upper gastrointestinal endoscopy. Endoscopic signs of reflux oesophagitis and Barrett's oesophagus were observed in 125 and 23 patients, respectively. Corpus gastritis was found in 59% of patients without reflux oesophagitis or Barrett's oesophagus, 45% of patients with reflux oesophagitis and 30% of patients with Barrett's oesophagus. Two hundred and fifty-seven patients underwent follow-up endoscopy after H. pylori therapy. During a mean follow-up of 3 months, the incidence of reflux oesophagitis was not statistically different for patients with healing of corpus gastritis (10/98; 10%) and patients with persistent gastritis (8/97; 8%).〈section xml:id="abs1-5"〉〈title type="main"〉Conclusions:Corpus gastritis was less common in patients with an endoscopic diagnosis of reflux oesophagitis or Barrett's oesophagus.
    Materialart: Digitale Medien
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  • 7
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Triple therapies with proton pump inhibitor/ranitidine bismuth citrate (RBC), clarithromycin (C) and either amoxicillin (A) or a nitroimidazole (I) are widely accepted as treatment for Helicobacter pylori infection. However, it is not clear which of these antibiotic combinations should be preferred.〈section xml:id="abs1-2"〉〈title type="main"〉Aim:To evaluate whether there is a difference in efficacy between triple therapies with proton pump inhibitor/RBC, clarithromycin and either amoxicillin or a nitroimidazole.〈section xml:id="abs1-3"〉〈title type="main"〉Methods:The literature was examined for randomized trials comparing proton pump inhibitor/RBC-C-A and proton pump inhibitor/RBC-C-I. Studies were grouped according to the type of acid inhibitor used (proton pump inhibitor or RBC) and differences between pooled cure rates were calculated.〈section xml:id="abs1-4"〉〈title type="main"〉Results:Forty-seven studies were identified: seven using RBC, 39 using proton pump inhibitor, one using both. RBC-C-I was somewhat superior to RBC-C-A, although this difference only reached statistical significance in intention-to-treat analysis. Overall, proton pump inhibitor-C-I and proton pump inhibitor-C-A were equally effective, but in nitroimidazole-susceptible strains, proton pump inhibitor-C-I performed better, in nitroimidazole-resistant strains, proton pump inhibitor-C-A performed better. No serious side-effects were reported and pooled drop-out rates were equal.〈section xml:id="abs1-5"〉〈title type="main"〉Conclusions:In general, proton pump inhibitor-C-I and proton pump inhibitor-C-A are equally effective and therefore other factors such as local prevalence of resistant strains, cost of therapy and options for second-line treatment should determine which regimen should be preferred. When using RBC, the RBC-C-I combination is somewhat superior to RBC-C-A.
    Materialart: Digitale Medien
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  • 8
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Triple therapy, combining a proton pump inhibitor with clarithromycin (C) and either amoxycillin (A) or a nitro-imidazole (I) is the standard in Helicobacter pylori eradication therapy. Recently, triple therapies based on ranitidine bismuth citrate (RBC) have emerged as an alternative. This review examines the current literature for studies directly comparing proton pump inhibitor- with RBC-based triple therapies. Seventeen studies were identified, of which three have been published as a full paper.Eradication rates in an intention-to-treat analysis ranged from 51 to 98%. No large difference in cure rates between the different regimens was demonstrated, although the RBC-I-C combination was somewhat superior. No definite conclusions could be made about the impact of metronidazole or clarithromycin resistance since only three studies performed a formal resistance analysis. No serious side-effects were reported, and dropout rates were equal for the two regimens.Both RBC- and proton pump inhibitor-based triple therapies are highly effective. If one prefers a imidazole/clarithromycin combination the evidence presented here suggests that RBC should be used instead of a proton pump inhibitor. Larger studies comparing both forms of triple therapy, using proper resistance analysis, are needed before final conclusions can be reached regarding efficacy in the setting of bacterial resistance.
    Materialart: Digitale Medien
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  • 9
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: The aim of this article is to determine, by reviewing the literature, whether treatment of Helicobacter pylori infection in patients with non-ulcer dyspepsia affects symptoms. Ten publications were identified through a computerized and manual literature search, and the percentage of patients with symptom improvement after successful or unsuccessful eradication therapy for H. pylori infection was calculated. In the 10 studies, symptom improvement after treatment was found in 73% of the patients that became H. pylori-negative and 45% of the patients that remained H. pylori-positive. Symptom improvement was modified by various clinical features and methodological aspects. If eradication of H. pylori failed, symptoms only improved over a short period. Symptom improvement was more pronounced in dyspeptic patients in whom H. pylori was eradicated than in those in whom H. pylori infection persisted.
    Materialart: Digitale Medien
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  • 10
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 20 (2004), S. 0 
    ISSN: 1365-2036
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background : With the advent of empirical treatment strategies for patients with dyspeptic symptoms, it becomes increasingly important to select patients with a high risk of having cancer for immediate endoscopy. Usually alarming symptoms are used for this matter, but their diagnostic value is by no means clear.Aim : To investigate the diagnostic value of alarm symptoms for upper gastrointestinal malignancy.Methods : Meta-analysis of studies describing prevalence of alarm symptoms in patients with and without endoscopically verified upper gastrointestinal malignancy were identified through a Medline search. The prevalence, pooled sensitivity, specificity, positive and negative predictive values were calculated.Results : About 17 case studies and nine cohort studies were selected. The mean prevalence of gastrointestinal malignancies in the cohort studies was 2.8% of 16 161 patients. Five cohort studies indicated that 25% of the patients diagnosed with upper gastrointestinal malignancy had no alarm symptoms. The pooled sensitivities of individual alarm symptoms varied from 9 to 41%, the pooled positive predictive value ranged from 4.6 to 7.9%, and was 5.9% for ‘having any alarm symptom’. The pooled negative predictive value was 99.4% for ‘having any alarm symptom’.Conclusion : The risk of upper gastrointestinal malignancy in any individual without alarm symptoms is very low, but approximately one in four patients with upper gastrointestinal cancer have no alarm symptoms at the time of diagnosis.
    Materialart: Digitale Medien
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