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Abstract In this study, we aimed to evaluate the effects of vitamins C and E on Helicobacter pylori in vitro, in other words in the absence of the in vivo dynamics of the gastric mucosa. The study included 32 patients with H. pylori-positive nonulcer dyspepsia. Tissue samples from antrum and corpus, which were taken during upper gastrointestinal endoscopy, were Gram stained and seeded onto culture plates supplemented with 7% horse blood for H. pylori culture. Plates were incubated in a microaerophilic environment. Isolated H. pylori strains were identified on Gram-stained smears and with urease test. Different concentrations of vitamins C, E and E+C were added into the Columbia Blood Agar plates containing 7% defibrinated horse blood at appropriate temperature in order to produce vitamin added media. Equal amounts of H. pylori colonies (equivalent to 1 McFarland turbidity standard unit) were inoculated onto media plates. Media groups were as follows: 1. Control group, 2. Vitamin C added group, 3. Vitamin E added group, 4. Vitamins C and E added group. Growth of H. pylori was seen in all culture media. By counting each colony, the total number of colony forming units (CFUs) on each plate was determined as 103 CFU/ml in two groups (60 µl vitamin E group and 20 µl vitamin C+60 µl vitamin E group). The total number of CFUs in other groups (including the control group) were approximately 1-2x102 CFU/ml. Inhibition of growth was not observed in any groups and there was a 1 log increase in plates with high levels of vitamin E. The present study shows that vitamins C and E had no inhibitory effects on H. pylori in vitro. Özet Bu çalışmada vitamin C ve E’nin Helicobacter pylori üzerine etkilerini in vitro ortamda, yani gastrik mukozanın in vivo etkilerinin olmadığı bir ortamda değerlendirmeyi amaçladık. Çalışmaya H. pylori pozitif ülser dışı dispepsisi olan 32 hasta dahil edildi. Üst gastrointestinal endoskopi sırasında antrum ve korpustan alınan doku örnekleri Gram boyandı ve H. pylori kültürü için %7 at kanı ile desteklenmiş kültür plakalarına (besiyerlerine) ekildi. Örnekler mikroaerofilik bir ortamda inkübe edildi. İzole edilen H. pylori suşları, Gram boyanmış yaymalar ve üreaz testi ile tanımlandı. Vitamin katkılı besiyeri ortamı üretmek için uygun sıcaklıkta %7 defibrine at kanı içeren Columbia Blood Agar plakalarına farklı konsantrasyonlarda C, E ve E + C vitaminleri eklendi. Eşit miktarlarda H. pylori kolonileri (1 McFarland türbidite standart birimine eşdeğer) besiyeri plakalarına inoküle edildi. Besiyeri grupları şu şekildedir: 1. Kontrol grubu, 2. Vitamin C eklenen grup, 3. Vitamin E eklenen grup, 4. Vitamin C ve E eklenen grup. Tüm kültür ortamlarında H. pylori üremesi görüldü. Her bir koloni sayılarak her plakadaki toplam koloni oluşturan birim (CFU) sayısı hesaplandı ve iki grupta (60 µl vitamin E grubu ve 20 µl vitamin C + 60 µl vitamin E grubu) 103 CFU/ml olarak belirlendi. Diğer gruplardaki (kontrol grubu dahil) toplam CFU sayısı ise yaklaşık 1-2x102 CFU/ml idi. Hiçbir grupta büyüme inhibisyonu gözlenmedi ve yüksek E vitamini seviyelerine sahip plakalarda 1 log artış oldu. Bu çalışma, C ve E vitaminlerinin in vitro olarak H. pylori üzerinde herhangi bir etkisinin olmadığını göstermektedir.
Helicobacter pylori, In vitro, Vitamin E, Vitamin C, İn vitro
Helicobacter pylori, In vitro, Vitamin E, Vitamin C, İn vitro
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citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |