Morphological changes of Helicobacter pylori caused in vitro by cytoprotective anti-ulcer drug, Sofalcone

1990 ◽  
Vol 48 (3) ◽  
pp. 620-621
Author(s):  
Isamu Kondo ◽  
Masashl Yamaguchi
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Bactericidal Activity ◽  
Morphological Changes ◽  
Bacterial Activity ◽  
The Other ◽  
H2 Receptor Antagonists ◽  
Ulcer Disease ◽  
H Pylori

Since Helicobacter pylori has recently been regarded as a possible causative agent of a chronic gastritis and a peptic ulcer disease, the susceptibilities of this organism to anti-ulcer agents or antibiotics have attracted much interest of not only clinical docters but also medicobiologists.We have reported that Sofalcone, a cytoprotective anti-ulcer drug, has anti-bacterial and bactericidal activity as well as TDS (tripotassium dicitrats bithmuthate) and Clarithromycin (a derivative of erythromycin), but the other anti-ulcer drugs Including anti-acid or H2 receptor antagonists such as cimetidine could not show such bacterial activity as those shown by the sofalcone (SFC), TDB, and clarithromycin (CLM). It was also found that therewere distinct differences between the morphological damage of H. pylori caused by SFC and those caused by TDB and CLM.

scholarly journals Systematic Analysis of Monoterpenes: Advances and Challenges in the Treatment of Peptic Ulcer Diseases

Biomolecules ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 265 ◽  
Author(s):  
Larissa Lucena Périco ◽  
Maycon Tavares Emílio-Silva ◽  
Rie Ohara ◽  
Vinícius Peixoto Rodrigues ◽  
Gabriela Bueno ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Complex Disease ◽  
Pharmacological Action ◽  
In Vivo Studies ◽  
Systematic Analysis ◽  
Ulcer Disease ◽  
H Pylori

Peptic ulcer disease (PUD) is a multifactorial and complex disease caused by an imbalance of protective and aggressive factors (endogenous and exogenous). Despite advances in recent years, it is still responsible for substantial mortality and triggering clinical problems. Over the last decades, the understanding of PUD has changed a lot with the discovery of Helicobacter pylori infection. However, this disease continues to be a challenge due to side-effects, incidence of relapse from use of various anti-ulcer medicines, and the rapid appearance of antimicrobial resistance with current H. pylori therapies. Consequently, there is the need to identify more effective and safe anti-ulcer agents. The search for new therapies with natural products is a viable alternative and has been encouraged. The literature reports the importance of monoterpenes based on the extensive pharmacological action of this class, including wound healing and anti-ulcerogenic agents. In the present study, 20 monoterpenes with anti-ulcerogenic properties were evaluated by assessing recent in vitro and in vivo studies. Here, we review the anti-ulcer effects of monoterpenes against ulcerogenic factors such as ethanol, nonsteroidal anti-inflammatory drugs (NSAIDs), and Helicobacter pylori, highlighting challenges in the field.

scholarly journals Identification of Markers for Helicobacter pylori Strains Isolated from Children with Peptic Ulcer Disease by Suppressive Subtractive Hybridization

2006 ◽  
Vol 74 (7) ◽  
pp. 4064-4074 ◽  
Author(s):  
Mónica Oleastro ◽  
Lurdes Monteiro ◽  
Philippe Lehours ◽  
Francis Mégraud ◽  
Armelle Ménard
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Peptic Ulcer Disease ◽  
Subtractive Hybridization ◽  
Suppressive Subtractive Hybridization ◽  
Ulcer Disease ◽  
Lipopolysaccharide Biosynthesis ◽  
The Difference ◽  
H Pylori

ABSTRACT Peptic ulcer disease (PUD) occurs after a long-term Helicobacter pylori infection. However, the disease can develop earlier, and rare cases have been observed in children, suggesting that these H. pylori strains may be more virulent. We used suppressive subtractive hybridization for comparative genomics between H. pylori strains isolated from a 5-year-old child with duodenal ulcer and from a sex- and age-matched child with gastritis only. The prevalence of the 30 tester-specific subtracted sequences was determined on a collection of H. pylori strains from children (15 ulcers and 30 gastritis) and from adults (46 ulcers and 44 gastritis). Two of these sequences, jhp0562 (80.0% versus 33.3%, P = 0.008) and jhp0870 (80.0% versus 36.7%, P = 0.015), were highly associated with PUD in children and a third sequence, jhp0828, was less associated (40.0% versus 10.0%, P = 0.048). Among adult strains, none of the 30 sequences was associated with PUD. However, both jhp0562 and jhp0870 were less prevalent in adenocarcinoma strains than in PUD strains from children and adults, the difference being statistically significant for jhp0870. In conclusion, two H. pylori genes were identified as being strongly associated with PUD in children, and their putative roles as an outer membrane protein for jhp0870 and in lipopolysaccharide biosynthesis for jhp0562, suggest that they may be novel virulence factors of H. pylori.

scholarly journals Association of Helicobacter Pylori with Peptic Ulcer Perforation

2019 ◽  
Vol 2 (1) ◽  
pp. 4-10
Author(s):  
Sunit Agrawal ◽  
D Thakur ◽  
P Kafle ◽  
A Koirala ◽  
R K Sanjana ◽  
...  
Keyword(s):  
Risk Factors ◽  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Peptic Ulcer Disease ◽  
Perforated Peptic Ulcer ◽  
Patch Repair ◽  
Peptic Ulcer Perforation ◽  
Ulcer Disease ◽  
Ulcer Perforation ◽  
H Pylori

Background: Helicobacter pylori is found in more than 90% cases of peptic ulcer. This study examines the possibility of association of Helicobacter pylori in perforated peptic ulcer disease and its relation to persisting ulcer as well as the influence of other risk factors; namely: smoking, alcohol, current non-steroidal anti inflammatory drugs (NSAIDs) and steroid use. Materials and Methods: In this prospective study, total of 50 cases of peptic ulcer perforation admitted in College of Medical Sciences and Teaching Hospital, Bharatpur, Nepal were selected on the basis of the non-probability (purposive) sampling method. All patients who presented with suspected peptic ulcer perforation were included in the study and the perforations were repaired by Modified Graham’s Patch and were given triple therapy postoperatively. The age, sex, incidence, mode of presentation, precipitating factors, association with the risk factors and postoperative complications were all evaluated and compared. Results: Of 50 patients studied, the age ranged from 17 to 75 years, mean age being 40.1 years with the peak incidence in the 3rd and 5th decades of life showing a male dominance (92%). H. pylori was seen in ulcer edge biopsy in 29 patients (58%). Most common clinical presentation was pain abdomen, the most common signs of perforation were tenderness, rebound tenderness and absent bowel sounds. The mean duration of stay in hospital in H. pylori positive patients was 12.07±8.15 days as compared with 11.1±5.12 days in H. pylori negative patients. The incidence of peptic ulcer perforation was higher in the patients consuming alcohol (64%) than smokers (48%), followed by NSAIDs user(22%). 20% of the patients with delayed presentation developed complications postoperatively. Perforated peptic ulcer was repaired by Modified Graham’s Patch Repair, followed by anti H. pylori therapy in all of them. Conclusion: Peptic ulcer perforation is quite common among the patients with peptic ulcer disease with history of chronic smoking, alcoholism and analgesic intake, more commonly in males. There is association of H. pylori in 58% of patients with peptic ulcer perforation.

scholarly journals RECURRENCE RATE OF HELICOBACTER PYLORI IN PATIENTS WITH PEPTIC ULCER FIVE YEARS OR MORE AFTER SUCCESSFUL ERADICATION

2016 ◽  
Vol 53 (3) ◽  
pp. 152-155 ◽  
Author(s):  
Yuri Costa Farago FERNANDES ◽  
Gabriel da Rocha BONATTO ◽  
Mauro Willeman BONATTO
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Recurrence Rate ◽  
Early Recurrence ◽  
Peptic Ulcers ◽  
Ulcer Disease ◽  
Gastroduodenal Mucosa ◽  
H Pylori

ABSTRACT Background Infection with Helicobacter pylori is highly prevalent worldwide, especially in developing countries. Its presence in the gastroduodenal mucosa is related with development of peptic ulcer and other illnesses. The eradication of H. pylori improves mucosal histology in patients with peptic ulcers. Objective This study was aimed to verify if H. pylori recurrence occurs five years or more after confirmed eradication in patients with peptic ulcer. Moreover, we sought to determine the recurrence rate. Methods Retrospective and longitudinal, this study was based on a sample of 201 patients from western Paraná, Brazil. The patients were diagnosed with peptic ulcer disease, in the period of 1990-2000, and followed for five years or more after successful H. pylori eradication. Patients with early recurrence - prior to five years after eradication - were excluded from the sample. Results During an average follow-up of 8 years, 180 patients (89.55%) remained negative, and 21 (10.45%) became positive for H. pylori infection. New ulcers appeared in two-thirds of the patients with H. pylori recurrence. Conclusion The recurrence of H. pylori in patients with peptic ulcer can occur in the long-term - even if the infection had been successfully eradicated and the patients had remained free of recurrence in the first years of follow-up.

scholarly journals In Vitro Activity of a Novel Antimicrobial Agent, TG44, for Treatment of Helicobacter pylori Infection

2006 ◽  
Vol 50 (9) ◽  
pp. 3062-3069 ◽  
Author(s):  
Osamu Kamoda ◽  
Kinsei Anzai ◽  
Jun-ichi Mizoguchi ◽  
Masatoshi Shiojiri ◽  
Toshiharu Yanagi ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Antibacterial Activity ◽  
Bactericidal Activity ◽  
Structural Formula ◽  
Therapeutic Modalities ◽  
Resistant Strains ◽  
H Pylori ◽  
Ph Range ◽  
Drug Resistant Strains

ABSTRACT Due to concerns about the current therapeutic modalities for Helicobacter pylori infection, e.g., the increased emergence of drug-resistant strains and the adverse reactions of drugs currently administered, there is a need to develop an anti-H. pylori agent with higher efficacy and less toxicity. The antibacterial activity of TG44, an anti-H. pylori agent with a novel structural formula, against 54 clinical isolates of H. pylori was examined and compared with those of amoxicillin (AMX), clarithromycin (CLR), and metronidazole (MNZ). Consequently, TG44 inhibited the growth of H. pylori in an MIC range of 0.0625 to 1 μg/ml. The MIC ranges of AMX, CLR, and MNZ were 0.0078 to 8 μg/ml, 0.0156 to 64 μg/ml, and 2 to 128 μg/ml, respectively. The antibacterial activity of TG44 against AMX-, CLR-, and MNZ-resistant strains was nearly comparable to that against drug-susceptible ones. In a pH range of 3 to 7, TG44 at 3.13 to 12.5 μg/ml exhibited potent bactericidal activity against H. pylori in the stationary phase of growth as early as 1 h after treatment began, in contrast to AMX, which showed no bactericidal activity at concentrations of up to 50 μg/ml at the same time point of treatment. TG44 at 25 μg/ml exhibited no antibacterial activity against 13 strains of aerobic bacteria, suggesting that its antibacterial activity against H. pylori is potent and highly specific. The present study indicated that TG44 possesses antibacterial activity which manifests quickly and is potentially useful for eradicating not only the antibiotic-susceptible but also the antibiotic-resistant strains of H. pylori by monotherapy.

scholarly journals Helicobacter Pylori Associated Antral Gastritis in Peptic Ulcer Disease Patients and Normal Healthy Population of Kashmir, India

1998 ◽  
Vol 4 (3) ◽  
pp. 135-139 ◽  
Author(s):  
Gh. Jeelani Romshoo ◽  
G. M. Malik ◽  
M. Youssuf Bhat ◽  
Ab. Rashid rather ◽  
Javaid Ahmad Basu ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Gastric Ulcer ◽  
Peptic Ulcer Disease ◽  
Healthy Volunteers ◽  
Chronic Gastritis ◽  
Healthy Population ◽  
Ulcer Disease ◽  
Antral Gastritis ◽  
H Pylori

Aim: To study the association of Helicobacter pylori infection with chronic antral gastritis in peptic ulcer disease patients and healthy population of Kashmir.Methods: 50 peptic ulcer patients (duodenal ulcer = 46, gastric ulcer = 2 and combined duodenal and gastric ulcer = 2) and 30 asymptomatic healthy volunteers were included in this study. Peptic ulcer was diagnosed on endoscopic examination. 4–6 punch biopsies were taken from gastric antrum in all the individuals and in case of gastric ulcer an additional biopsy was taken from the edge of the ulcer to exclude its malignant nature. Helicobacter pylori (H. pylori) organism was diagnosed using three different test methods, viz. Histology (using Giemsa Stain), Microbiology (Gram Stain) and Biochemistry (using one minute Endoscopy Room Test). Histological diagnosis of H. pylori was taken as the “gold standard” for the presence of H. pylori organism. Histological diagnosis of gastritis was made using Hematoxylin and Eosin Stain and the gastritis was classified as active chronic gastritis and superficial chronic gastritis.Results: Out of 30 peptic ulcer disease patients with associated antral gastritis, 27 (90%) were positive for H. pylori on histological examination (13 superficial chronic gastritis and 14 active chronic gastritis) whereas out of 8 healthy volunteers with histological evidence of chronic antral gastritis, H. pylori was observed in 7 individuals (87.50%) (4 active chronic gastritis and 3 superficial chronic gastritis).Conclusion: A highly significant association between H. pylori infection with chronic antral gastritis both in peptic ulcer disease patients and healthy volunteers of Kashmir was found in this study. Association between H. pylori infection and chronic gastritis was 90% in peptic ulcer group and 87.50% in healthy population (P<0.005).

scholarly journals Presence of Helicobacter pylori infection in gastroduodenal perforations

2020 ◽  
Vol 7 (6) ◽  
pp. 1908
Author(s):  
Kemparaj T. ◽  
Ashika Bagur
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Ulcer Disease ◽  
Surgical Emergencies ◽  
Gastroduodenal Perforation ◽  
H Pylori ◽  
A Prospective Study ◽  
Duodenal Perforations ◽  
Relationship Of ◽  
The Relationship

Background: Gastroduodenal perforations constitute one of the commonest surgical emergencies encountered. Helicobacter pylori is a gram negative bacterium that has infected more than half the world’s population. The most commonly recognized manifestation of H. pylori infection in India is peptic ulcer disease. Although the relationship between H. pylori infection and peptic ulcer has been well defined, the relationship of H. pylori infection with gastroduodenal perforation is still controversial. The objective of the study was to determine the presence of H. pylori in gastroduodenal perforations.Methods: We conducted a prospective study, noting the number of cases which turned out to be positive for H. pylori in cases of gastroduodenal perforations intraoperatively, using rapid urease test.Results: Out of 100 cases of gastroduodenal perforations operated, 74% were positive for the test. Gastric perforations positive for the test were 81.4% and duodenal perforations positive for the test were 68.42%.Conclusions: There is a positive attribution between H. pylori infection and gastroduodenal perforations.

scholarly journals A high-throughput metabolic microarray assay reveals antibacterial effects of black and red raspberries and blackberries against Helicobacter pylori infection

2020 ◽  
Author(s):  
Candace Goodman ◽  
Katrina Lyon ◽  
Aitana Scotto ◽  
Mandi M. Roe ◽  
Farimah Moghimpour ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
High Throughput ◽  
Severe Disease ◽  
Antibacterial Properties ◽  
Black Raspberry ◽  
Antibacterial Effects ◽  
Ulcer Disease ◽  
H Pylori

AbstractHelicobacter pylori is an important bacterial pathogen that causes chronic infection of the human stomach, leading to gastritis, peptic ulcer disease and gastric cancer. Treatment with appropriate antibiotics can eliminate H. pylori infection and reduce the risk for severe disease outcomes. However, since H. pylori is becoming increasingly resistant to standard antibiotic regimens, novel treatment strategies are needed. Previous studies have demonstrated that black and red berries may have antibacterial properties. Therefore, we analyzed organic extracts and powders from black and red raspberries and blackberries and determined their antibacterial effects on multiple H. pylori strains. We used high-performance liquid chromatography to measure berry anthocyanins, which are considered the major active ingredients. To monitor antibiotic effects of the berry preparations on H. pylori, we developed a high-throughput metabolic growth assay based on the OmniLog™ system. All berry preparations tested had significant bactericidal effects in vitro, with MIC90 values ranging from 0.49 to 4.17%. We next used human gastric epithelial organoids to evaluate biocompatibility of the berry preparations and showed that black raspberry extract, which had the strongest antimicrobial activity, was non-toxic at the concentration required for complete bacterial growth inhibition. To determine whether dietary black raspberry application could eliminate H. pylori infection in vivo, mice were infected with H. pylori and then were placed on a diet containing 10% black raspberry powder. However, this treatment did not significantly impact bacterial infection rates or gastric pathology. In summary, our data indicate that black and red raspberry and blackberry products have potential applications in the treatment and prevention of H. pylori infection, because of their antibacterial effects and good biocompatibility. However, delivery and formulation of berry compounds needs to be optimized to achieve significant antibacterial effects in vivo.

scholarly journals PCR-Based Restriction Pattern Typing of the vacA Gene Provides Evidence for a Homogeneous Group among Helicobacter pylori Strains Associated with Peptic Ulcer Disease

1999 ◽  
Vol 37 (4) ◽  
pp. 912-915 ◽  
Author(s):  
Manuela Donati ◽  
Elisa Storni ◽  
Lucia D’Apote ◽  
Sandra Moreno ◽  
Antonio Tucci ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Peptic Ulcer ◽  
Peptic Ulcer Disease ◽  
Restriction Pattern ◽  
Polymorphism Analysis ◽  
Nonulcer Dyspepsia ◽  
Ulcer Disease ◽  
Pcr Products ◽  
Vaca Gene ◽  
H Pylori

The results of PCR-based molecular typing of Helicobacter pylori strains by restriction fragment length polymorphism analysis of a 1,161-bp nucleotide sequence of the midregion of thevacA gene are reported. A total of 48 H. pylori strains isolated from gastric biopsy specimens obtained from 18 patients with peptic ulcer dyspepsia, 15 patients with nonulcer dyspepsia, and 15 asymptomatic H. pylori-infected subjects were studied. Highly heterogeneous restriction patterns were obtained by digestion of PCR products with SauII,BglII, and HhaI, whereas HaeIII digestion resulted in a strictly homogeneous profile for H. pylori strains isolated from 14 of 18 (77.7%) patients with peptic ulcer dyspepsia, but a strictly homogeneous profile was found for strains from only 8 of 15 (53.3%) patients with nonulcer dyspepsia (P = 0.163) and 5 of 15 (33.3%) asymptomaticH. pylori-infected subjects (P = 0.014). A potentially important aspect of the results obtained is the clinical relevance, since a single restriction pattern seems to be able to identify the majority of H. pylori strains associated with peptic ulcer disease.

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