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Introduction: The relation between Helicobacter pylori with iron deficiency is being studied in recent years. The aim of this study is finding the relation between Helicobacter pylori with the rate of hemoglobin and serum ferritin.
Material and Methods: This study is an observational study and a cross-sectional type which is done analytical-descriptive against 262 patients suffering from anemia and for each patient the amounts of Hemoglobin, MCV, serum ferritine and Helicobacter IgG titre is calculated and then the relation between these amounts and Helicobacter is evaluated.
Results: In 147 patients (56%), Helicobacter IgG antibody was negative. In 78 cases (29.8%) the serum ferritin was less than 120 µgr/dlit. Using statistical analysis (Logistic regression) revealed that there was a statistical relation between the amount of ferrittin and the chance of strickened with Helicobacter in individuals whom their ferrittin rate was less than 12, 1.93% of patients whom their ferrittin is more than 12 and the enhance is significant. By the way it was cleared that there is not any significant statistical relation between MCV reduction and the chance of being strickened with Helicobacter.
Conclusion: Serum ferrittine rate in patients with Helicobacter pilory infection reduced and this reduce was significance. Previous studies in other countries indicated to this issue.

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Background: Hyperemesis Gravidarum is the pernicious vomiting during pregnancy that causes various complications. This present was investigated to relationship between Helicobacter Pylori and Hyperemesis Gravidarum. Methods and Materials: 80 women with 7-16 gestational age, participated in this case-control study. It was done in Obstetric Clinical of Shabihkhani Hospital in Kashan from April to July 2008.The case group had Hyperemesis Gravidarum but the control group did not. The criteria for Hyperemesis Gravidarum were pernicious vomiting (more than 3 times a day) and the presence of one pluse ketonuria. Serum titre of anti Helicobacter pylori IgG with standard ELAZA kit in each group then compared. Chi square test was applied for data analysis and significancy was P-Value less than 0.05. Results: The mean of age was 25.4±4.5 in case and 22.4±4.6 in control group. There were no statistically significant differences in age, gestational age, gravity and parity between two groups. The frequency of Helicobacter Pylori was 75% in case and 35% in control group. Difference was significant (p=0.001). Conclusion: In this study, significant relationship between Hyperemesis Gravidarum and Helicobacter Pylori was seen. Regarding to Helicobacter Pylori causes peptic ulcer and hyperemesis imitates some Peptic ulcer symptoms, more studies should be carried out to determine this relationship.

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Background: Aspirin (ASA) and helicobacter pylori infection are two major known risk factors for peptic-ulcer. This research aims to examine the interaction between helicobacter pylori and low dose ASA in inducing gastro-intestinal complications. Materials and Methods: The target group consisted of patients with cardiovascular disease who were under low dose ASA therapy. Patients, who had symptoms of dyspepsia, were placed in the case group and those who did not have these symptoms were placed in the control group. 5cc blood samples, required for conducting ELISA Ab., were taken simultaneously in both of the groups. ELISA positive patients underwent UBT test. UBT positive patients were categorized as helicobacter pylori positive and those with negative UBT were placed in the helicobacter pylori negative group. Finally, the ratio of dyspepsia incidence probability to Aspirin usage and helicobacter pylori infection was analyzed. Results: Of the 129 individuals present in the control group and 71 individuals who were in the case group, 72(36%) were UBT positive, and the rest were UBT negative. Of all the patients, 35.5% had dyspepsia and there was a significant difference between UBT positive and UBT negative individuals (p=0.001, OR=6.54). of 43 patients who had signs of intensified dyspepsia 23 persons under went endoscopy assessment which 20 of them were diagnosed with peptic ulcer. Eighty percent of the patients who had developed peptic ulcer, were UBT positive which revealed a significant difference with UBT negative (p=0.001, OR=8.86). Conclusion: In order to reduce gastro-intestinal complications, it is suggested that long term low dose Aspirin takers be subjected for screening and to receive treatment in terms of infection with helicobacter pylori and clinical manifestations.

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Background: Helicobacter pylori iceA gene has been reported to be a genetic marker for the development of peptic ulcer in western populations. The aim of this study was to investigate the prevalence of iceA genotypes and their relationship with peptic ulcer in Iran. Materials and Methods: This observational study was carried out on 75 patients. Biopsy specimens were evaluated for the presence of Helicobacter pylori through rapid urease test. GlmM gene and iceA1 and iceA2 genotypes allelic verification and variation culture were determined via PCR. Results: In this study, iceA1 and iceA2 alleles were identified in peptic ulcer disease (PUD) patients. IceA1 genotype (64%) was more prevalent than iceA2 (21.3%). IceA1 strains were more observable in patients with PUD. No significant relationships were seen between iceA genotypes and the clinical outcomes following infection (p= 0.71). Conclusion: This study revealed a significant two-tailed correlation between iceA genotypes and PUD occurrence. The results indicate that iceA1 gene can be used as a reliable marker in predicting the clinical outcomes of Helicobacter pylori infection. Therefore, further in-vitro and in-vivo investigations are needed for reaching general consensus in this regard.

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Background: H. pylori infection is common worldwide involving 50% of the general population. The aim of this study was to compare the effect of two sequential regimen therapies on the eradication of H. pylori. Materials and Methods: In this clinical trial, 150 patients were allocated to two groups of 75 each: group A and group B. The eradication of H. pylori in groups A and B was based on azithromycin and ofloxacin sequential regimens, respectively, and the results were compared between the groups. The data were analyzed by t-test, Chi-square test, and Fisher’s exact test using SPSS software version 16. Results: Mean of the patients’ age was 39.3± 1.2 within the age range of 18 to 85 years. There were not significant differences between the two groups considering the type of peptic ulcer. In group A, Urea Breath Test (UBT) was negative in 67 (89.3%) patients while in group B, it was only positive in 8 (10.7%) patients. In group B, there were 64 (85.3%) negative and 11 (14.7%) positive UBT test results. There were no significant differences in H. pylori eradication rates between the two groups (P=0.31). Conclusion: Noticing the absence of a significant difference between the two groups in terms of H. pylori eradication, it can be concluded that ofloxacin-based drug regimens have no superiority over azithromycine-based regimens and each regimen can be prescribed considering drug complication rates in different patients.

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Background: H.pylori is one of the most common chronic bacterial infections in population so more than 85 percent are infected in Iran. H.pylori can cause different gastrointestinal disease like gastritis, peptic ulcers and even cancer. One of the effective factors in pathogenesis of bacteria is cytotoxin associated with gene A (cagA). Strains with cagA gene are more virulent. The aim of this study was to determine the frequency of cagA gene of H.pylori in patients with gastric disorders who were admitted to Imam Hossein Hospital, Tehran. Materials and Methods: In this descriptive study, DNA was extracted from 84 paraffin- embedded tissues using QiaAmp tissue kit. H.pylori was verified with PCR of 16sRNA sequences specific for Helicobacter spices and cagA gene was determined using specific primer by the PCR method. The prevalence of cagA gene in three clinical groups gastritis, gastric ulcer, and atrophic patients was compared. Results: Among 84 H.pylori positive isolates ,72 biopsy samples were positive for 16sRNA (85.7%) and 46 (63.9%) for cagA. The prevalence of cagA positive strains in peptic ulcer patients (43.5%) was greater than in those with gastritis (30%). Conclusion: Results showed that Helicobacter pylori strains with cagA are more common in patients with peptic ulcer and cancer.

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Background: Helicobacter pylori is the most common bacteria causing chronic infections worldwide. An important virulence factor of H. pylori is a vacuolating cytotoxin (VacA) that induces the formation of acidic vacuoles in cytoplasm and damage to epithelial cells. The aim of this study was to examine the antigenic properties of the recombinant VacA of H. pylori in infected sera of mice and human.

Materials and Methods: In this experimental study, the highly antigenic region of VacA gene (1233 bp) was detected by bioinformatics methods, and it was amplified by PCR method and cloned into the pET32a expression vector. After expression and purification of the target protein, its antigenicity was studied by Western Blotting using human sera infected with H. pylori and sera from immunized mice infected with purified recombinant VacA.

Results: PCR and sequencing results showed that the target gene was correctly cloned into the recombinant vector. Antibodies used in Western Blotting indicated the production and expression of the recombinant protein (65kDa) with concentration of 2.1 mg/ml.

Conclusion: Recombinant VacA protein has antigenic and immunogenic properties thus, it is a proper candidate for designing H. pylori vaccine and diagnostic kits

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Background: Helicobacter pylori (H. pylori) is a gram negative bacilli that causes the stomach and duodenum diseases in human. An important virulence factor of H. pylori is a CagA gene that increases of colonization it in stomach epithelial cells and lead to inflammation and peptic ulcers. The aim of the present study was to production of recombinant protein containing highly antigenic region of CagA in E. coli.

Materials and Methods: In this experimental study, the antigenic region (1245 base pair) of CagA gene was detected by bioinformatics methods, proliferated by PCR method, digested by BamHI and XhoI restriction enzymes and cloned into pET32a plasmid and was expressed in the E. coli BL21 (DE3) pLysS with induced by IPTG. The expressed protein was purified with Ni-NTA kit and its antigenicity was studied by western blotting method.

Results: Data showed the successful cloning and expression of the target gene. Recombinant CagA protein purified by Ni-NTA kit and dialysis with concentration of 1.5 mg/ml. In western blotting, the produced protein was interacted with infected human and mice sera.

Conclusion: Results indicated that recombinant CagA protein (65 KDa) maintains its antigenicity, so could be used for serological diagnosis of H. pylori diseases and production of vaccine.

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Background: The neutrophil-activating protein (HP-NAP) of Helicobacter pylori is a protective antigen and a major virulence factor of this bacteria. Stimulating the immune system for helicobacter infection treatment could have an important role. The aim of study is to assess the effect of recombinant Neutrophil activating protein (Hp-NapA) of helicobacter pylori on proliferation and viability of peritoneal macrophages from BALB/c mice.

Materials and Methods: In this experimental study, recombinant Hp-NapA of helicobacter pylori was produced in vitro. Mice peritoneal macrophages were purified and cultured. Different concentrations of recombinant Hp-NapA was used for macrophages stimulation. MTT assay was performed to assess the viability and proliferation of macrophages.

Results: The results elucidated that the increasing effect of stimulation with recombinant Hp-NapA was significant at the dose of 30 µg/ml  (p=0.01). The rate of viabitity was significantly higher than control group at the doses of 30 and 60 µg/ml and in the concurrency series of recombinant protein with lipopolysaccharid, there was a statistically significarit increase in proliferation at just these doses.

Conclusion: According to our findings, recombinant Hp-NapA has a positive effect on proliferation, viability and function of peritoneal macrophages. Therefore, it is proposed that recombinant Hp-NapA can be studied as an immunomodulator for immunotherapy.

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