Helicobacter pylori colonization of gallbladder in patients with symptomatic cholelithiasis

Background: The relation of Helicobacter pylori and its presence in gallbladder mucosa in patients with symptomatic cholelithiasis has been a topic of various studies. In order to establish this relation, this study has been performed so as to bring to light the capability of the organism to harbor in the gallbladder.Methods: The patients underwent gastroscopy for specimens of gastric mucosa followed by laparoscopic/open cholecystectomy and histopathological examination of gallbladder specimen.Results: The results showed H. pylori in 16 (40%) in gastric mucosa specimens and 4 (10%) in gallbladder mucosa specimens.Conclusions: This revealed a significant correlation of H. pylori colonization in gallbladder mucosa with respect to gastric mucosa colonization.

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Spectrum of Changes in Gastric Mucosa with Helicobacter Pylori Infection

Journal of Nepalgunj Medical College ◽

10.3126/jngmc.v12i1.13403 ◽

2015 ◽

Vol 12 (1) ◽

pp. 29-31 ◽

Cited By ~ 1

Author(s):

PG Ghimire ◽

P Ghimire ◽

RG Goel ◽

DV Bahl

Keyword(s):

Helicobacter Pylori ◽

Gastric Mucosa ◽

Histopathological Examination ◽

Endoscopic Biopsy ◽

Correlated Data ◽

Histopathological Study ◽

P Value ◽

Female Ratio ◽

Younger Age ◽

H Pylori

Aim: To evaluate the spectrum of mucosal changes in endoscopy guided gastric biopsies and analyze the association of Helicobacter pylori with demographic factors.Materials and Methods: It was a cross sectional analytical study conducted in the Department of Pathology during the period from December 2011 to April 2012. A total of 52 endoscopic biopsy specimens, each fulfilling the inclusive criteria were selected and processed using standard histopathological technique and stained with Haematoxylin-Eosin stain and modified Giemsa stain for Helicobacter pylori. Histopathological, ultrasonographic and endoscopic findings were correlated. Data were analyzed using SPSS 17.Results: Out of 52 cases enrolled in our study, 29 (55.8%) were males and 23 (44.2%) were females with a male: female ratio of 1.2:1. H. pylori infection was present in 16 (30.8 %) of biopsies and was significantly greater in the younger age group between 21 to 40 years (p value <0.024). Histopathological examination showed atrophy of the gastric mucosa in 18 (34.6%) cases, dysplasia in one and intestinal metaplasia in three cases. Statistically significant relation (p value < 0.006) was seen between H. pylori and mucosal atrophy. No significant association was seen between gender and presence of H. pylori in the gastric mucosa (p value < 0.16).Conclusions: Histopathological study of endoscopic biopsy showed spectrum of changes in symptomatic cases. H pylori was seen significantly in younger age with atrophy of gastric mucosa as a significant finding.Journal of Nepalgunj Medical College Vol.12(1) 2014: 29-31

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Gallstones and Concomitant GastricHelicobacter pyloriInfection

Gastroenterology Research and Practice ◽

10.1155/2013/643109 ◽

2013 ◽

Vol 2013 ◽

pp. 1-4 ◽

Cited By ~ 4

Author(s):

Wafi Attaallah ◽

Nese Yener ◽

M. Umit Ugurlu ◽

Manuk Manukyan ◽

Ebru Asmaz ◽

...

Keyword(s):

Helicobacter Pylori ◽

Gastric Mucosa ◽

Gallstone Disease ◽

Rapid Urease Test ◽

Immunohistochemical Stain ◽

Gallbladder Mucosa ◽

Urease Test ◽

Symptomatic Gallstones ◽

H Pylori ◽

Symptomatic Gallstone Disease

Background. The association of gallstones withHelicobacter pylorihas been investigated but not clearly demonstrated. In this study, the presence ofH. pyloriin the gallbladder mucosa of patients with symptomatic gallstones was investigated.Method. Ninety-four consecutive patients with symptomatic gallstone disease were enrolled for the study. Gastroscopy and gastricH. pyloriurease test were done before cholecystectomy to all patients who accepted. After cholecystectomy, the gallbladder tissue was investigated in terms ofH. pyloriby urease test, Giemsa, and immunohistochemical stain.Results. Overall 35 patients (37%) gallbladder mucosa tested positive forH. pyloriwith any of the three tests. Correlation of the three tests Giemsa, IHC, and rapid urease test was significant(rs: 0590,P>0.001). Rapid urease test was positive in the gastric mucosa in 47 (58.7%) patients, and it was positive in the gallbladder mucosa in 21 patients (22%). In 15 patients both gastric and gallbladder tested positive with the urease test. There was significant correlation of rapid urease test in both of gallbladder and gastric mucosa(P=0.0001).Conclusion. Study demonstrates the presence ofH. pyloriin the gallbladders of 37% of patients with symptomatic gallstones.

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Increased Production of Matrix Metalloproteinases in Helicobacter pylori Infection that Stimulates Gastric Cancer Stem Cells

International Journal of Veterinary Science ◽

10.37422/ijvs/20.043 ◽

2020 ◽

Keyword(s):

Gastric Cancer ◽

Stem Cells ◽

Helicobacter Pylori ◽

Cancer Stem Cells ◽

Histopathological Examination ◽

Physiological Saline ◽

Rrna Gene ◽

Peptic Ulcers ◽

Gastric Cancer Stem Cells ◽

H Pylori

Background and aim: Helicobacter pylori (H. pylori) is an incriminated pathogen causing diseases in both animals and humans and considered a zoonotic pathogen. H. pylori infection is considered a cause of gastric cancer, which rests a significant health care challenge. This study analyzes the expression pattern of matrix metalloprotein 2 (MMP-2) in patients with Helicobacter pylori-associated gastritis and the effect of H. pylori on gastric cancer stem cells, as well as study the role of helicon bacteriosis in dog in transmission of H. pylori infection to human. Materials and methods: Fifty-five of each sample (gastric biopsy, blood and stool) were collected from patients suffering from dyspepsia, chronic vomiting and perforated peptic ulcers and also from apparent healthy dogs. The investigation detected H. pylori by serological and histopathological examination. Biopsies were stored in physiological saline for identification of H. pylori by conventional time PCR. MMP-2 and Gastric cancer stem cells were then identified by immunohistochemistry. Results: Serological identification for H. pylori Antigen and Antibodies revealed (63% human, 50% dogs) and (87% human, 90% dogs) respectively were positive. Genotyping of H. pylori based on 16S rRNA gene showed 54.5% of human and 35% of dogs were positive. Immunohistochemistry revealed strong expression of CD44 in H. pylori- associated gastric cancer cases, MMP-2 expression was observed in all neoplastic lesions associated with H. pylori infection. Conclusion: H. pylori infection affects gastric mucosa and induces changes in gastric stem cells altering their differentiation and increased expression of MMP’s and CD44with a resultant potentiation of oncogenic alteration. In addition the up-regulation of both markers could be an instrumental to interpret the origination of gastric cancer.

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Helicobacter pylori Virulence Factors—Mechanisms of Bacterial Pathogenicity in the Gastric Microenvironment

Cells ◽

10.3390/cells10010027 ◽

2020 ◽

Vol 10 (1) ◽

pp. 27

Author(s):

Jacek Baj ◽

Alicja Forma ◽

Monika Sitarz ◽

Piero Portincasa ◽

Gabriella Garruti ◽

...

Keyword(s):

Gastric Cancer ◽

Helicobacter Pylori ◽

Gastric Mucosa ◽

Virulence Factors ◽

Premalignant Lesions ◽

Bacterial Pathogenicity ◽

Current State ◽

Genetic And Environmental Factors ◽

H Pylori ◽

Stimulation Of

Gastric cancer constitutes one of the most prevalent malignancies in both sexes; it is currently the fourth major cause of cancer-related deaths worldwide. The pathogenesis of gastric cancer is associated with the interaction between genetic and environmental factors, among which infection by Helicobacter pylori (H. pylori) is of major importance. The invasion, survival, colonization, and stimulation of further inflammation within the gastric mucosa are possible due to several evasive mechanisms induced by the virulence factors that are expressed by the bacterium. The knowledge concerning the mechanisms of H. pylori pathogenicity is crucial to ameliorate eradication strategies preventing the possible induction of carcinogenesis. This review highlights the current state of knowledge and the most recent findings regarding H. pylori virulence factors and their relationship with gastric premalignant lesions and further carcinogenesis.

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Vertical Helicobacter pylori transmission from Mongolian gerbil mothers to pups

Journal of Medical Microbiology ◽

10.1099/jmm.0.008185-0 ◽

2009 ◽

Vol 58 (5) ◽

pp. 656-662 ◽

Cited By ~ 8

Author(s):

Ichiro Oshio ◽

Takako Osaki ◽

Tomoko Hanawa ◽

Hideo Yonezawa ◽

Cynthia Zaman ◽

...

Keyword(s):

Helicobacter Pylori ◽

Gastric Mucosa ◽

16S Rrna ◽

Real Time ◽

Mongolian Gerbil ◽

Rt Pcr ◽

Antibody Titres ◽

Mother's Milk ◽

Mother’S Milk ◽

H Pylori

To identify the time frame and route of mother-to-child Helicobacter pylori infection, a Mongolian gerbil model was used. Four-week-old female Mongolian gerbils were infected with H. pylori, and then mated with uninfected males 2 months after infection. The offspring were sacrificed weekly after birth, and then serum, mother's milk from the stomach and gastric tissues were obtained from pups. Anti-H. pylori antibody titres were measured in sera and maternal milk using an ELISA. The stomach was cut in two in the sagittal plane, and then H. pylori colonization in mucosa was confirmed by culture and real-time RT-PCR in one specimen and by immunochemical staining in the other. Faeces and oral swabs were obtained from infected mothers, and H. pylori 16S rRNA was measured using real-time RT-PCR. H. pylori was not identified in cultures from the gastric mucosa of pups delivered by infected mothers, but H. pylori 16S rRNA was detected from 4 weeks after birth, suggesting that Mongolian gerbil pups become infected via maternal H. pylori transmission from 4 weeks of age. The anti-H. pylori antibody titre in sera of pups from infected mothers was maximum at 3 weeks of age and then rapidly decreased from 4 weeks of age. High antibody titres in mother's milk were detected during the suckling period, and GlcNAcα was detectable at 2–4 weeks of age, but disappeared as the offspring aged. Thus H. pylori seems to infect Mongolian gerbil pups from 4 weeks of age, in parallel with decreasing GlcNAcα expression in the gastric mucosa. These results suggested that H. pylori infection of Mongolian gerbil pups occurs via faecal–oral transmission from an infected mother.

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Role of Crush Cytology for the Detection of Helicobacter Pylori in Gastroduodenal Diseases

Journal of Dhaka Medical College ◽

10.3329/jdmc.v17i2.6589 ◽

1970 ◽

Vol 17 (2) ◽

pp. 88-93

Author(s):

K Ahsan ◽

MZ Hossain ◽

MR Uddin

Keyword(s):

Helicobacter Pylori ◽

Histopathological Examination ◽

Cross Sectional Study ◽

Biopsy Material ◽

Cross Sectional ◽

Gastroduodenal Disease ◽

Duodenal Lesions ◽

Bismuth Salts ◽

H Pylori ◽

Low Sensitivity

Context: A cross-sectional study was carried out at the Department of Pathology, Dhaka Medical Collage, Dhaka and Immunology Laboratory, Laboratory Sciences Division of ICDDR,B, Dhaka during a period of 1 year from July, 2007 to June, 2008 to determine the efficacy of endoscopic crush cytology in the detection of Helicobacter pylori infection in gastroduodenal diseases. Clinically suspected cases of gastro-duodenal lesions and who had not taken antibiotics, omeprazole or bismuth salts for at least three weeks prior to endoscopy were selected. Patients who were clinically and endoscopically suspected of having malignancy were excluded from the study. A total of 110 such subjects were consecutively included in the study. The statistics used to analyze the data were descriptive statistics and components of accuracy test.Results: The sensitivity of crush cytology in correctly diagnosing H. pylori of those who had the disease was 89.3%, while the specificity of the test in correctly differentiating those who did not have H. pylori was 92.6% when compared against histopathological examination using Giemsa stain. However, a slightly low sensitivity (86.2%) without compromising with specificity (92.3%) was obtained when the crush cytology diagnosis was compared against histopathological examination using haematoxylin-eosin (H & E) stain.Conclusion: The study concludes that the diagnostic accuracy of crush smear cytology (sensitivity and specificity) for detection of Helicobacter pylori in gastric biopsy material is comparable to histopathology. Moreover, the technique is very simple, less expensive and less time consuming which gives clinicians added advantage in making a quicker decision.Key words: Cytology; Helicobacter pylori; Gastroduodenal disease. DOI: 10.3329/jdmc.v17i2.6589J Dhaka Med Coll. 2008; 17(2) : 88-93

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Helicobacter pylori colonization and oral health in children

Romanian Journal of Medical Practice ◽

10.37897/rjmp.2017.1.8 ◽

2017 ◽

Vol 12 (2) ◽

pp. 41-44

Author(s):

Vasile Valeriu LUPU ◽

◽

Gabriela PĂDURARU ◽

Anca ADAM ◽

Ana-Maria DĂBULEANU ◽

...

Keyword(s):

Helicobacter Pylori ◽

Oral Health ◽

Gastric Mucosa ◽

Oral Cavity ◽

Gold Standard ◽

Dental Plaque ◽

Negative Bacterium ◽

Gram Negative ◽

Standard Triple Therapy ◽

H Pylori

Helicobacter pylori (H. pylori) is a microaerophilic gram-negative bacterium infecting approximately one half of the world’s population. The oral cavity and dental plaque may be a reservoir for H. pylori infection. Diagnosis of H. pylori infection in children differs from that of adults. Although H. pylori has long been known to be detected in the oral cavity, the significance of such findings are controversial. Oral H. pylori may play an important role in re-infection of the gastric mucosa. The gold standard for eradicating H. pylori infection is standard triple therapy. The studies have shown promising results in the management of both oral and gastric H. pylori.

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Helicobacter pylori infection reduces the risk of gastroesophageal reflux disease

Experimental and Clinical Gastroenterology ◽

10.31146/1682-8658-ecg-193-9-96-101 ◽

2021 ◽

pp. 96-101

Author(s):

R. I. Khlynova ◽

O. M. Khromtsova ◽

R. B. Berdnikov ◽

I. B. Khlynov

Keyword(s):

Helicobacter Pylori ◽

Gastroesophageal Reflux Disease ◽

Gastric Mucosa ◽

Gastroesophageal Reflux ◽

Observational Study ◽

Reflux Disease ◽

Helicobacter Pylori Infection ◽

Cross Sectional ◽

Biopsy Specimens ◽

H Pylori

The aim is to study the effect of Helicobacter pylori infection on risk of developing gastroesophageal reflux disease. Materials and methods - cross-sectional observational study of 1007 patients with dyspepsia syndrome who underwent videoesophagogastroduodenoscopy with biopsy and histological examination of biopsy specimens of the gastric mucosa by OLGA-system. The age, gender, overweight, cigarette smoking, presence of Helicobacter pylori infection and gastritis stage were assessed. Results - the study showed a significant decrease in the incidence of gastroesophageal reflux disease in patients with positive H. Pylori status by 4% (RR 0,68; 95% CI, 0.49-0.94, p=0,041). The risk of developing gastroesophageal reflux disease significantly higher in overweight (RR 2,62; 95% CI 2,0-3,56; р<0,001) men (RR 1,76; 95% CI 1,33-2,32; р=0,0046) who smoked cigarettes (RR 3,23; 95% CI 2,45-4,24; р<0,001) and was not associated with the patient’s age and the stage of gastritis (р>0,05). Conclusion - a significant reduction in the frequency and risk of developing gastroesophageal reflux disease in patients with Helicobacter pylori infection is demonstrated.

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The organization of Helicobacter pylori cag-pathogenicity island (cagPAI) genes in multiracial population with histopathological changes of gastric mucosa

10.21203/rs.2.9601/v1 ◽

2019 ◽

Author(s):

Alfizah Hanafiah ◽

Shaza Azlin Razak ◽

Hui-min Neoh ◽

Noraziah Mohamad Zin ◽

Bruno S. Lopes

Keyword(s):

Helicobacter Pylori ◽

Gastric Mucosa ◽

Pathogenicity Island ◽

Type Iv Secretion ◽

Virulence Determinants ◽

Gastric Diseases ◽

Cag Pathogenicity Island ◽

Type Iv ◽

Inflammatory Score ◽

H Pylori

Abstract Background: Helicobacter pylori is a Gram-negative bacillus that colonises only the mucus layer of the human stomach and is implicated in gastric diseases. Virulent H. pylori harbouring cag-pathogenicity island (cagPAI) which encodes genes for type IV secretion system (T4SS) and CagA protein is one of the major virulence determinants involved in disease development. We examined the entire cagPAI genes in 95 H. pylori isolates from a multiracial population and examined the intactness of cagPAI region with histopathological scores of the gastric mucosa. Results: 95.8% of H. pylori isolates were cagPAI-positive with 23.2% having an intact cagPAI, whereas 72.6% had a partial/rearranged cagPAI. In our study, cag2 and cag4 were found to be significantly higher in H. pylori isolated from Malays, whereas cag4 was predominant in Chinese isolates. We also detected cag24 in significantly high proportion in isolates from the Malays and the Indians compared to the Chinese isolates. The intactness of cagPAI region showed an association with histopathological scores of the gastric mucosa. Significant association was observed between H. pylori harbouring partial cagPAI and higher density of H. pylori and neutrophil activity, whereas strains which lacked cagPAI was associated with higher inflammatory score. Conclusions: The screening of the entire cagPAI genes provides an accurate overview of the cagPAI organisation in H. pylori isolates in a multiracial population. The genotypes of H. pylori strains with various cagPAI rearrangement associated with patients’ ethnicities and histopathological scores might contribute to the pathogenesis of H. pylori infection in a multi-ethnic population.

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