Role Of Helicobacter Pylori Infection Research Articles

The Role of Helicobacter Pylori Infection in Idiopathic Thrombocytopenic Purpura in Children

Background: Many studies had found obvious relation between helicobacter pylori infection and chronic idiopathic thrombocytopenic purpura; several studies have reported remission of immune thrombocytopenic purpura (ITP) after eradication of a coexistent Helicobacter pylori infection in adults, data in children are limited. Objective: To detect the association of H. pylori infection and idiopathic thrombocytopenic purpura in children and the effect of eradication of the infection on platelet count in these patients. Patients and methods: This study was conducted on 83 chronic idiopathic thrombocytopenic purpura children with age range from 3 to 13 years. They were 46 males 37 females. Also the study included 104 healthy individual with the same range of age. They were 58 males and 46 females as a control group. This was between October 2018 and September 2019 in the Pediatric Hematology and GIT Clinics or inpatients wards of Pediatric Department. Results: Clinical benefit occurred in 31 cases of the 83 chronic ITP (cITP) patients screened; nevertheless, we have a simple, inexpensive, non‐invasive screening method; the adverse events of eradication therapy are negligible, together with an affordable cost, all uncommon attributes among the specific treatments currently available for cITP; therefore it is worthwhile to test for and treat H. pylori infection. Conclusion: Our data showed a prevalence of H. pylori infection in cITP pediatrics that was similar to other studies. We found that successful H. pylori eradication induced platelet response in 37.3% of 83 cases included in our study.

Autoimmune gastritis.

Autoimmune gastritis (AIG) is an increasingly prevalent, organ-specific, immune-mediated disorder characterized by the destruction of gastric parietal cells, leading to the loss of intrinsic factor and reduced acid output. These alterations result in malabsorption of iron, vitamin B12 (pernicious anaemia) and potentially other micronutrients. For several years, most studies have focused on pernicious anaemia only, generating confusion between the two entities. In AIG, the gastric proton pump, H+/K+ ATPase, is the major autoantigen recognized by autoreactive T cells. The T cell-dependent activation of B cells stimulates the production of anti-parietal cell antibodies, the serological hallmark of AIG. The role of Helicobacter pylori infection in activating or favouring the autoimmune process is still uncertain. Early histopathological alterations allowing a more precise and prompt recognition have recently been described. AIG is burdened by a substantial diagnostic delay as it can present with varied clinical signs including, among others, gastrointestinal symptoms and neuropsychiatric manifestations. In advanced stages, AIG might progress to neuroendocrine tumours and gastric adenocarcinoma. Management includes early detection through a proactive case-finding strategy, micronutrient supplementation and endoscopic surveillance. This Primer comprehensively describes the most important insights regarding the epidemiology, pathophysiology, diagnosis and management of AIG, focusing on the most controversial, outstanding issues and future directions.

Association of helicobacter pylori with multiple sclerosis: Protective or risk factor?

Background: Multiple sclerosis (MS) is a common autoimmune inflammatory disease in the central nervous system (CNS) without exact pathology. Environmental factors such as infections have a causal or protective role in MS. Helicobacter pylori (HP) is one of the infections in digestive diseases and previous studies reported controversial findings of this infection role in MS. So, we conducted this study to assess the frequency of HP infection in patients with MS in comparison to the healthy population. Methods: This cross-sectional study was undertaken between 2015 and 2019. 191 participants including 58 patients with clinically isolated syndrome (CIS), 57 patients with relapsing-remitting MS (RRMS), 39 patients with secondary progressive MS (SPMS), and 39 age- and sex-matched healthy controls (HCs) were tested for the presence of HP immunoglobulin G (IgG) and IgM antibodies (Abs) in their serum sample. Results: The frequency of HP IgG seropositivity in patients with SPMS was significantly higher than patients with CIS [Odds ratio (OR): 6.333, 95% confidence interval (CI): 2.522-15.906, P < 0.001], patients with RRMS (OR: 4.583, 95% CI: 1.842-11.407, P = 0.001), and HCs (OR: 8.485, 95% CI: 3.058-23.540, P < 0.001). We did not find a significant difference among other study groups regarding IgG seropositivity. No significant difference among groups regarding HP IgM seropositivity was evident. On univariate model, Expanded Disability Status Scale (EDSS) score (OR: 1.038, 95% CI: 1.038-1.460, P = 0.017) and SPMS (OR: 4.583, 95% CI: 1.842-11.407, P = 0.001) were predictor for HP IgG seropositivity. On multivariate model, only SPMS had higher risk for HP IgG seropositivity compared to RRMS (OR: 5.554, 95% CI: 1.327-23.253, P = 0.019). We did not find a significant association between clinical and demographic variables with HP IgM seropositivity. Conclusion: Based on our findings, progressive MS and HP infection may have association. Further longitudinal studies with large sample size are needed to determine the role of HP infection in MS.

Response to article of K. I. Grigoriev et al. “Peptic ulcer disease — historical dynamics: views on etiopathogenesis and treatment”, In Experimental and Clinical Gastroenterology. 2019;161(1): 155–165. (In Russ.) DOI: 10.31146/1682–8658-ecg-161–1–155–165

In this article is discussed the historical facts of the study of peptic ulcer during 190 years after its self-selection in an independent nosological form. The scientific facts and arguments refuting the leading role of Helicobacter pylori infection in its etiology and pathogenesis are given; the conclusion of the authors of this article about the inevitability of a new paradigm of peptic ulcer in the near future is supported.

ASSOCIATION OF DUODENAL EOSINOPHILIC INFILTRATE WITH HELICOBACTER PYLORI INFECTION, BUT NOT WITH FUNCTIONAL DYSPEPSIA.

The role of Helicobacter pylori infection on eosinophilic infiltration in duodenal mucosa is poorly studied. An increase in the number of eosinophils in duodenum has been associated with functional dyspepsia. To evaluate the influence of H. pylori infection on duodenal eosinophil count and the role of eosinophilic infiltrate of duodenum in functional dyspepsia. Positive and negative H. pylori individuals were included. Both functional dyspeptic patients according to Rome III criteria (cases) and individuals without gastrointestinal symptoms (controls) were enrolled. They were submitted to upper endoscopy and H. pylori infection was verified by gastric histopathology and urease test. Eosinophils in the duodenal mucosa were counted in five high-power fields, randomly selected on slides of endoscopic biopsies. Thirty-nine H. pylori positive (mean age 40.5 and 69.2% women) and 24 negative patients (mean age 37.3 and 75% women) were included. The influence of the infection was observed in the duodenal eosinophil count, which was higher in infected individuals: median 13.2 vs 8.1 in non-infected individuals (P=0.005). When we analyzed patients according to symptoms, cases - mean age 39.6; 71.4% women - and controls - mean age 38.7; 71.4% women - had similar duodenal eosinophil count: median 11.9 and 12.6 respectively (P=0.19). We did not demonstrate association of duodenal eosinophil count with functional dyspepsia but found association with H. pylori infection.

Role of Helicobacter Pylori Infection in Laparoscopic Sleeve Gastrectomy Outcomes

Role of Helicobacter Pylori Infection in Laparoscopic Sleeve Gastrectomy Outcomes

Helicobacter pylori associated factors in the development of gastric cancer with special reference to the early-onset subtype.

Nowadays, gastric cancer is one of the most common neoplasms and the fourth cause of cancer-related death on the world. Regarding the age at the diagnosis it is divided into early-onset gastric carcinoma (45 years or younger) and conventional gastric cancer (older than 45). Gastric carcinomas are rarely observed in young population and rely mostly on genetic factors, therefore provide the unique model to study genetic and environmental alternations. The latest research on early-onset gastric cancer are trying to explain molecular and genetic basis, because young patients are less exposed to environmental factors predisposing to cancer. In the general population, Helicobacter pylori, has been particularly associated with intestinal subtype of gastric cancers. The significant association of Helicobacter pylori infection in young patients with gastric cancers suggests that the bacterium has an etiologic role in both diffuse and intestinal subtypes of early-onset gastric cancers. In this paper we would like to ascertain the possible role of Helicobacter pylori infection in the development of gastric carcinoma in young patients. The review summarizes recent literature on early-onset gastric cancers with special reference to Helicobacter pylori infection.

A qualitative synthesis of gastro-oesophageal reflux in bronchiectasis: Current understanding and future risk.

Gastro-oesophageal reflux disease (GORD) is a common comorbidity in bronchiectasis, and is often associated with poorer outcomes. The cause and effect relationship between GORD and bronchiectasis has not yet been fully elucidated and a greater understanding of the pathophysiology of the interaction and potential therapies is required. This review explores the underlying pathophysiology of GORD, its clinical presentation, risk factors, commonly applied diagnostic tools, and a detailed synthesis of original articles evaluating the prevalence of GORD, its influence on disease severity and current management strategies within the context of bronchiectasis. The prevalence of GORD in bronchiectasis ranges from 26% to 75%. Patients with co-existing bronchiectasis and GORD were found to have an increased mortality and increased bronchiectasis severity, manifest by increased symptoms, exacerbations, hospitalisations, radiological extent and chronic infection, with reduced pulmonary function and quality of life. The pathogenic role of Helicobacter pylori infection in bronchiectasis, perhaps via aspiration of gastric contents, also warrants further investigation. Our index of suspicion for GORD should remain high across the spectrum of disease severity in bronchiectasis. Identifying GORD in bronchiectasis patients may have important therapeutic and prognostic implications, although clinical trial evidence that treatment targeted at GORD can improve outcomes in bronchiectasis is currently lacking.

Mo1961 - Potential Role of Helicobacter Pylori Infection in Clinical and Laboratory Nutritional Parameters in Functional Dyspeptic Patients

Mo1961 - Potential Role of Helicobacter Pylori Infection in Clinical and Laboratory Nutritional Parameters in Functional Dyspeptic Patients

Mo1194 - Natural History of Gastric Ulcer in a 25 Years Follow-Up: Role of Helicobacter Pylori Infection and Nonsteroidal Anti-Inflammatory Drugs

Mo1194 - Natural History of Gastric Ulcer in a 25 Years Follow-Up: Role of Helicobacter Pylori Infection and Nonsteroidal Anti-Inflammatory Drugs

The prevalence of Helicobacter pylori in perforated peptic ulcer disease

Background: Although the role of Helicobacter pylori infection in noncomplicated peptic ulcer disease has been definitively established, the precise relationship between the organism and ulcer complications is doubtful. Recurrent ulcer disease after peptic ulcer perforation mainly occurs in patients with H. pylori infection, which suggests that the microorganism plays an important role in this complication.Methods: This observational study was conducted in the Department of General Surgery, Himalayan Institute of Medical Sciences (HIMS), Swami Ram Nagar, Dehradun, over a period of January 2013 to December 2013 and included 75 subjects who underwent exploratory laparotomy for peptic ulcer perforation. The tests used for the diagnosis of H. pylori are mucosal biopsy at the time of surgery, Rapid urease test (RUT), Stool antigen test.Results: In this study, H. pylori infection was found to be present in 61% of these patients as detected by biopsy. There were 66 males and 9 females. Infection with H. pylori is almost universal in patients aged more than 70 years.Conclusions: In the Indian context patients presenting with perforation should be tested for infection with H. pylori utilizing a gastric antral mucosal biopsy taken at the time of operation for histological analysis and eradication therapy should be advised to all those who are found positive.

Helicobacter pylori associated to unexplained or refractory iron deficiency anemia: an Egyptian single-center experience

BackgroundRefractory or unexplained iron deficiency anemia accounts for about 15% of all cases. The endoscopic gastrointestinal workup sometimes fails to establish the cause of iron deficiency anemia and a considerable proportion of patients regardless of risk category fail to respond to oral iron supplementation. The aim of the present study was to assess the etiological role of Helicobacter pylori infection in adult Egyptian patients with unexplained or refractory iron deficiency anemia. MethodsA case controlled study was composed of 104 iron deficiency anemia cases and 70 age- and gender-matched healthy controls. Patients were diagnosed with iron deficiency anemia according to hemoglobin, mean corpuscular volume, serum ferritin, and transferrin saturation. Upper and lower endoscopies were performed and active H. pylori infection was investigated by testing for the H. pylori antigen in stool specimens. Hematological response to H. pylori treatment with triple therapy together with iron therapy (n=32) or only iron therapy (n=32) were assessed in patients with H. pylori infection. ResultsH. pylori infection was more prevalent in patients with unexplained or refractory iron deficiency anemia (61.5%). Of the different hematological parameters investigated, there was a significant correlation only between H. pylori infection and mean corpuscular volume (p-value 0.046). Moreover, there was a significant correlation between receiving triple therapy together with iron supplementation and improvements in the hematological parameters [hemoglobin (p-value<0.001), mean corpuscular volume (p-value<0.001), iron (p-value<0.001) and serum ferritin (p-value<0.001)] compared to receiving iron supplementation alone. ConclusionsFailing to test for H. pylori infection could lead to a failure to identify a treatable cause of anemia and could lead to additional and potentially unnecessary investigations. Furthermore, treatment of H. pylori infection together with iron supplementation gives a more rapid and satisfactory response.

Role of Helicobacter pylori infection in the development of gastric cancer and related molecular mechanisms

Role of Helicobacter pylori infection in the development of gastric cancer and related molecular mechanisms

Is There A Role of Helicobacter Pylori Infection in Incidence of Acute Coronary Syndrome?

Is There A Role of Helicobacter Pylori Infection in Incidence of Acute Coronary Syndrome?

Helicobacter pylori infection and serum leptin, obestatin, and ghrelin levels in Mexican schoolchildren.

BackgroundThere is little information about the possible role of Helicobacter pylori infection on appetite-regulating peptides in children. This study evaluated the association between H. pylori infection and serum levels of ghrelin, leptin, and obestatin in schoolchildren.MethodsOne hundred seventy-eight schoolchildren, students at boarding schools in Mexico City, participated. H. pylori infection status was determined every 6 months for 1 year by a breath test using 13C-urea; schoolchildren with consistently positive or negative results were selected to participate. Age, sex, and body mass index (BMI) were recorded. Serum concentrations of total ghrelin, leptin, and obestatin via specific enzyme-linked immunosorbent assays were determined.ResultsSchoolchildren with H. pylori infection had lower concentration of leptin, -0.54 pg/ml (95% CI: -0.98 to -0.09), compared to the schoolchildren without infection, after adjustment by age, gender, and BMI. And the children with the infection had a median of obestatin lower in 0.99 ng/ml (95% CI: -1.93 to -0.06) compared with the uninfected children after adjustment by BMI.ConclusionAssociation was found between H. pylori infection and decreased serum concentrations of leptin and obestatin. These results suggest that in schoolchildren, H. pylori infection affects the levels of hormones implicated in regulating appetite and energy homeostasis.

The Possible Role of Helicobacter pylori Infection in Non-alcoholic Fatty Liver Disease.

Helicobacter pylori (H. pylori) which colonizes the stomach can cause a wide array of gastric disorders, including chronic gastritis, peptic ulcer, and gastric cancer. Recently, accumulating evidence has implicated H. pylori infection in extragastrointestinal diseases such as cardiovascular diseases, neurological disorders, and metabolic diseases. At the same time, many scholars have noted the relationship between H. pylori infection and non-alcoholic fatty liver disease (NAFLD). Despite the positive association between H. pylori and NAFLD reported in some researches, there are opposite perspectives denying their relationship. Due to high prevalence, unclear etiology and difficult treatment of NAFLD, confirming the pathogenicity of H. pylori infection in NAFLD will undoubtedly provide insights for novel treatment strategies for NAFLD. This paper will review the relationship between H. pylori infection and NAFLD and the possible pathogenic mechanisms.

Kyoto consensus - the new etiological classification of chronic gastritis and its discussion

The main provisions and headings of the new etiological classification of chronic gastritis are discussed in the context of recent data on the true role of Helicobacter pylori infection in the development of this pathology. The methods and results of the authors ’ investigations into gastric microflora are presented along with information about the frequency of detection of its different forms, concentration of microbial forms in gastric mucosa, their pathogenic properties including urease activity, and possible contribution to chronic gastritis etiology. The possibility of alcoholic and chemical chronic gastritis is discussed along with the role of these conditions in the development of stomach cancer. Special emphasis is laid on the disagreement between the adopted consensuses and principles of evidence-based medicine.

Genetic variations of TLR5 gene interacted with Helicobacter pylori infection among carcinogenesis of gastric cancer.

Gastric cancer (GC) ranks the second prevalent cancer type and the second cancer-related death in China. However, the precise mechanisms of GC development remain poorly understood. Chronic infection with Helicobacter pylori is the strongest identified risk factor for GC. Toll-like receptor (TLR) genes, which play critical roles in Helicobacter pylori induced chronic inflammation, may also be implicated in GC susceptibility. TLR5 signaling deficiency could deregulate a cascade of inflammatory events. In current study, we systematically evaluated genetic variations of TLR5, and their interaction with Helicobacter pylori infection among carcinogenesis of gastric cancer, using a large case-controls study among Chinese population. Minor alleles of three SNPS, including rs5744174 (P = 0.001), rs1640827 (P = 0.005), and rs17163737 (P = 0.004), were significantly associated with increased GC risk (OR ranged from 1.20–1.24). Significant interactions with Helicobacter pylori infection were also identified for rs1640827 (P for interaction = 0.009) and rs17163737 (P for interaction = 0.006). These findings suggest that genetic variants in TLR5 may modify the role of Helicobacter pylori infection in the process of causing GC.

Childhood recurrent abdominal pain and Helicobacter pylori infection, Islamic Republic of Iran.

We examined the role of Helicobacter pylori infection as a cause of recurrent abdominal pain (RAP) among Iranian children in a population-based case-control study to determine the association between H. pylori infection and RAP among schoolchildren. A total of 1558 children aged 6-13 years were examined. Children with RAP confirmed by the Apley and Naish criteria were selected; 145 cases were selected for inclusion and were compared with 145 healthy children recruited from the same area. Both groups underwent stool antigen testing. The prevalence of RAP in the children tested was 9.3%. Children with RAP had a higher H. pylori infection rate than the control group (58.6% vs 44.8%) (OR = 1.744; 95% CI: 1.095-2.776). There was no significant difference between the RAP symptoms in children with positive stool test, i.e. infected with H. pylori, and those whose tests were negative. We identified H. pylori infection in more than 55% of the case group. Therefore, H. pylori infection can be considered an important factor for RAP in children.

The role of Helicobacter pylori infection in gastric carcinogenesis and its prevention by using Chinese medicinal herbs

The role of Helicobacter pylori infection in gastric carcinogenesis and its prevention by using Chinese medicinal herbs