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Ghoreshi ZAS, Rezaei Zadeh Rukerd M, Askarpour H, Kheirkhah Vakilabad AA, Nakhaie M, Abbaszadeh Afshar MJ, Behboudi E, Charostad J, Arefinia N. The Role of Epstein-Barr Virus (EBV) Infected Gastric Cancer in Increasing microRNA124 (miR-124) Promoter Methylation and Enhancer of Zeste Homolog 2 (EZH2) Gene Expression. Medicine (Baltimore) 2024; 103:e36534. [PMID: 38517989 PMCID: PMC10956982 DOI: 10.1097/md.0000000000036534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 11/17/2023] [Indexed: 03/24/2024] Open
Abstract
The tumor suppressor microRNAs, miR-21, miR-124, and miR-494, participate in the controlling several cellular processes. To assess target miRNAs promoter methylation levels, we investigated 304 pairs of gastric cancer (GC) tissues and non-tumor tissues. We used a commercial real-time polymerase chain reaction (RT-PCR) for Epstein-Barr virus (EBV) and Helicobacter pylori kit to detect EBV and H. pylori DNA in GC tissues. After finding hypermethylation in the promoter of the miR-124 gene, we evaluated its expression level using quantitative PCR (qPCR). Bioinformatics analysis confirmed miR-124 as a target of enhancer of Zeste homolog 2 (EZH2). Additionally, qPCR confirmed the association between EZH2 and miR-124. EBV and H. pylori DNA were detected in 9.5% and 15.1% of GC patients, respectively. Our findings also revealed significant differences in the miR-124 methylation levels among EBV-infected GC patients, H. pylori infected GC patients, GC patients without EBV and H. pylori infection, and non-tumor tissue. Bioinformatics and qPCR assays suggested an inverse relationship between the expression levels of EZH2 and miR-124 in EBV-infected GC patients. Our data revealed hypermethylation of the miR-124 promoter and significant reduction in its expression in EBV-infected GC tissues. It is possible that miR-124 may target EZH2 by binding to the 3'-UTR of the EZH2 gene, thus potentially contributing to the development of EBV-infected GC.
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Affiliation(s)
| | | | - Hedyeh Askarpour
- School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran
| | | | - Mohsen Nakhaie
- Gastroenterology and Hepatology Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Emad Behboudi
- Department of Basic Sciences, Khoy University of Medical Sciences, Khoy, Iran
| | - Javad Charostad
- Department of Biology, Faculty of Science, Yazd University, Yazd, Iran
| | - Nasir Arefinia
- Bio Environmental Health Hazard Research Center, Jiroft University of Medical Sciences, Jiroft, Iran
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Karimi M, Mohammadnia A, Amini MA, Shamekh AG, Derakhshanfar E, Hosseini F. Overexpression of miR-146a and miR-155 are Potentially Biomarkers and Predict Unfavorable Relationship between Gastric Cancer and Helicobacter pylori Infection. Chonnam Med J 2023; 59:167-173. [PMID: 37840673 PMCID: PMC10570867 DOI: 10.4068/cmj.2023.59.3.167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 10/17/2023] Open
Abstract
Gastric Cancer (GC) is one of the most dangerous malignancies in the world. This study aims to evaluate the relationship between miR-146a and miR-155 in patients with H. pylori infections with GC compared to H. pylori-infected patients and healthy subjects. Forty patients with H. pylori and GC positive diagnoses and 40 patients with H. pylori positive and GC negative diagnoses, and 40 healthy persons were selected. The expression of miR-146a and miR-155 genes in the whole blood was examined using qRT-PCR. Moreover, ROC curves were drawn to represent the sensitivity and specificity of miR-146a and miR-155 expression as biomarkers. The results showed the expression of miR-146a and miR-155 in the whole blood of patients with H. pylori and GC positive diagnoses are significantly higher than in healthy individuals and are non-significantly enhanced compared to H. pylori positive and GC negative. Also, the results stated miR-146a and miR-155 expression in the whole blood of patients who are H. pylori positive and GC negative are significantly increased compared to healthy individuals. Furthermore, the ROC curve analysis of miR-146a and miR-155 RNA level demonstrated the two miRNAs have an appropriate sensitivity and specificity for diagnostic goals. In conclusion, H. pylori infection may increase the expression of miR-146a and miR-155 in patients with H. pylori and GC positive diagnoses, which can be effective in the curbing the progression of GC. For this reason, up-regulation of miR-146a and miR-155 along with H. pylori infection might contribute to the pathogenesis of GC, and also can be suggested as biomarkers for GC diagnosis and treatment.
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Affiliation(s)
- Masoud Karimi
- Department of Medical Biotechnology, School of Sciences and Advanced Technologies, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Abdolreza Mohammadnia
- Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Amin Amini
- Department of Clinical Biochemistry, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Azar Ghavimi Shamekh
- Department of Education and Research of Blood Transfusion Organization, Hamadan, Iran
| | - Elahe Derakhshanfar
- Department of Quality Control, Razi Vaccine and Serum Research Institute, Alborz, Iran
| | - Farzaneh Hosseini
- Department of Food Science and Technology, Faculty of Biological Sciences, North Tehran Branch, Islamic Azad University, Tehran, Iran
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Wang B, Gan Q, Tong Y, Qiao Y, Han M, Zhang R, Han Q, Li C, Bai S, Xu L, Yin Y, Zhang C, Munkhtsetseg B, Zhao X, Meng M, Xi R. A visual diagnostic detection of Helicobacter pylori and the gastric carcinoma-related virulence genes (cagA and vacA) by a fluorescent loop-mediated isothermal amplification (LAMP). Talanta 2023; 256:124260. [PMID: 36640706 DOI: 10.1016/j.talanta.2023.124260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 12/19/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
Helicobacter pylori (H. pylori) infection has increasingly been a serious problem worldwide. The H. pylori infection can result in a series of stomach diseases including gastric carcinoma. There are two specific virulence genes (cagA and vacA) of H. pylori that are closely related to the occurrence of gastric cancer, and the common molecular detection methods (PCR, qPCR) are not suitable for high-screening test due to the requirement of expensive instruments and well-trained personals. Herein, we develop a rapid visual assay based on loop-mediated isothermal amplification (LAMP) for detecting H. pylori and its major virulence genes (cagA, vacAs1 and vacAm1) to guide clinical treatment for H. pylori infection. In this research, a fluorescent LAMP assay was established by optimizing the indicator of MnCl2-Calcein, so that the resulted color and fluorescence changes could be utilized to perform the visual detection for H. pylori and its virulence genes with high sensitivity (10-3 ng/μL). The proposed LAMP assay is simple, fast (30 min) and capable in providing more sensitive results than traditional methods in the test of 46 clinical biopsy samples. By detecting the three virulence genes together, we can profile the infection risk of the patients, and discuss the correlation among the genes. Moreover, the method could be used to diagnose virulently infected individuals and benefit the eradication of H. pylori in early warning for gastric cancer.
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Affiliation(s)
- Bei Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China.
| | - Qi Gan
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China
| | - Yue Tong
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China
| | - Yanqi Qiao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China
| | - Mengfan Han
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China
| | - Ruixiao Zhang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China
| | - Quansheng Han
- Shenzhen Zhonghe Headway Bio-Sci & Tech Co., Ltd., 6 Floor, Building R1-B, South District, High-tech Industrial Park, Shennan Road, Shenzhen 518057, China
| | - Chuanbing Li
- Shenzhen Zhonghe Headway Bio-Sci & Tech Co., Ltd., 6 Floor, Building R1-B, South District, High-tech Industrial Park, Shennan Road, Shenzhen 518057, China
| | - Su Bai
- Shenzhen Zhonghe Headway Bio-Sci & Tech Co., Ltd., 6 Floor, Building R1-B, South District, High-tech Industrial Park, Shennan Road, Shenzhen 518057, China
| | - Long Xu
- Department of Gastroenterology and Hepatology, Shenzhen University General Hospital; Shenzhen University International Cancer Center, Shenzhen 518055, Guangdong, China
| | - Yongmei Yin
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China
| | - Chunze Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin 300121, China
| | - Baatar Munkhtsetseg
- Chemistry Department, Ulaanbaatar State University, Bayanzurkh district, Ulaanbaatar, Mongolia
| | - Xiujie Zhao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China.
| | - Meng Meng
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China.
| | - Rimo Xi
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and KLMDASR of Tianjin, Nankai University, Tongyan Road, Haihe Education Park, Tianjin 300350, China.
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Bucci P, Barbaglia Y, Tedeschi F, Zalazar F. Helicobacter pylori infection: A balance between bacteria and host. Rev Argent Microbiol 2023; 55:60-67. [PMID: 35773060 DOI: 10.1016/j.ram.2022.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 01/14/2022] [Accepted: 04/07/2022] [Indexed: 12/12/2022] Open
Abstract
In Argentina, despite the important studies conducted on the prevalence of infection and the antibiotic resistance of Helicobacter pylori, there are no reports simultaneously analyzing a profile of virulence factors of the bacterium and polymorphisms in cytokine genes in patients with different alterations in the gastric mucosa (including intestinal metaplasia, IM). Our aim was to evaluate H. pylori genotypes in 132 adult patients with chronic gastritis presenting three different histological findings (inactive chronic gastritis, active chronic gastritis IM- and active chronic gastritis IM+) along with SNP-174 G>C in the IL-6 gene. cagA, vacA and babA2 genes were analyzed by multiplex PCR. The -174 G>C SNP IL-6 gene was analyzed by PCR-RFLP. Patients with active chronic gastritis IM+ showed the highest proportion of the cagA(+)/IL-6GG, cagA(+)/vacAm1s1/IL-6GG and cagA(+)/vacAm1s1/babA2(+)/IL-6GG combinations (p<0.05). There was 4-5 times greater probability of finding patients presenting the GG genotype for SNP-174 G>C IL-6, which in turn were infected with the most virulent H. pylori genotypes -cagA(+), cagA(+)/vacAm1s1 and cagA(+)/vacAm1s1/babA2- in the ACGIM+ group in comparison to the ICG group. Our results provide regional data to the idea that the transition towards severe alterations in the gastric mucosa would be the result of a balance between specific factors of H. pylori and inherent host factors. This fact can be useful to identify patients at greater risk and to select those individuals requiring appropriate eradication treatment to prevent progression to gastric cancer.
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Affiliation(s)
- Pamela Bucci
- Laboratorio de Práctica Profesional de Bioquímica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Subsuelo Hospital "Dr. José María Cullen", Avda. Freyre 2150, (S3000EOZ) Santa Fe, Argentina
| | - Yanina Barbaglia
- Servicio de Gastroenterologia, Subsuelo Hospital "Dr. José María Cullen", Avda. Freyre 2150 (S3000EOZ) Santa Fe, Argentina
| | - Fabián Tedeschi
- Laboratorio de Práctica Profesional de Bioquímica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Subsuelo Hospital "Dr. José María Cullen", Avda. Freyre 2150, (S3000EOZ) Santa Fe, Argentina
| | - Fabián Zalazar
- Laboratorio de Práctica Profesional de Bioquímica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Subsuelo Hospital "Dr. José María Cullen", Avda. Freyre 2150, (S3000EOZ) Santa Fe, Argentina.
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Tamjid N, Eskandari S, Karimi Z, Nezafat N, Negahdaripour M. Vaccinomics strategy to design an epitope peptide vaccine against Helicobacter pylori. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Majewski M, Mertowska P, Mertowski S, Smolak K, Grywalska E, Torres K. Microbiota and the Immune System-Actors in the Gastric Cancer Story. Cancers (Basel) 2022; 14:cancers14153832. [PMID: 35954495 PMCID: PMC9367521 DOI: 10.3390/cancers14153832] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/04/2022] [Accepted: 08/06/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Stomach cancer is one of the most commonly diagnosed cancers in the world. Although the number of new cases is decreasing year by year, the death rate for this type of cancer is still high. The heterogeneous course and the lack of symptoms in the early stages of the disease mean that the diagnosis is made late, which translates into a worse prognosis for such patients. That is why it is so important to analyze potential risk factors that may increase the risk of developing gastric cancer and to search for new effective methods of treatment. These requirements are met by the analysis of the composition of the gastric microbiota and its relationship with the immune system, which is a key element in the human anti-cancer fight. This publication was created to systematize the current knowledge on the impact of dysbiosis of human microbiota on the development and progression of gastric cancer. Particular emphasis was placed on taking into account the role of the immune system in this process. Abstract Gastric cancer remains one of the most commonly diagnosed cancers in the world, with a relatively high mortality rate. Due to the heterogeneous course of the disease, its diagnosis and treatment are limited and difficult, and it is associated with a reduced prognosis for patients. That is why it is so important to understand the mechanisms underlying the development and progression of this cancer, with particular emphasis on the role of risk factors. According to the literature data, risk factors include: changes in the composition of the stomach and intestinal microbiota (microbiological dysbiosis and the participation of Helicobacter pylori), improper diet, environmental and genetic factors, and disorders of the body’s immune homeostasis. Therefore, the aim of this review is to systematize the knowledge on the influence of human microbiota dysbiosis on the development and progression of gastric cancer, with particular emphasis on the role of the immune system in this process.
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Affiliation(s)
- Marek Majewski
- 2nd Department of General, Gastrointestinal Surgery and Surgical Oncology of the Alimentary Tract, Medical University of Lublin, 20-081 Lublin, Poland
| | - Paulina Mertowska
- Department of Experimental Immunology, Medical University of Lublin, 20-093 Lublin, Poland
- Correspondence:
| | - Sebastian Mertowski
- Department of Experimental Immunology, Medical University of Lublin, 20-093 Lublin, Poland
| | - Konrad Smolak
- Department of Experimental Immunology, Medical University of Lublin, 20-093 Lublin, Poland
| | - Ewelina Grywalska
- Department of Experimental Immunology, Medical University of Lublin, 20-093 Lublin, Poland
| | - Kamil Torres
- Chair and Department of Didactics and Medical Simulation, Medical University of Lublin, 20-093 Lublin, Poland
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Wu L, Jiang F, Shen X. Helicobacter pylori CagA Protein Regulating the Biological Characteristics of Gastric Cancer through the miR-155-5p/SMAD2/SP1 axis. Pathogens 2022; 11:846. [PMID: 36014967 PMCID: PMC9414533 DOI: 10.3390/pathogens11080846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 11/18/2022] Open
Abstract
Helicobacter pylori (Hp) is a grade Ι carcinogen of gastric cancer (GC), and its high infection rate seriously affects human health. Cytotoxin-associated gene A (CagA) plays a key role in the carcinogenesis of Hp as one of its main virulence factors. miR-155-5p is abnormally expressed in patients with GC, associated with the occurrence and development of cancer. However, little is known about the association between CagA and miR-155-5p. (1) Background: This study explored the association and mechanism of CagA and miR-155-5p in GC. (2) Methods: The CagA sequence was obtained from the NCBI. After sequence optimization, it was connected to the pcDNA3.1 vector to construct a CagA eukaryotic expression plasmid (pcDNA-CagA). Quantitative real-time polymerase chain reaction (qRT-PCR) was used to investigate the expression of miR-155-5p and CagA in GC cells. The function of CagA on GC cells was detected by CCK8, wound healing, and Transwell assays. Similarly, the function of miR-155-5p was also studied through the above functional experiments after the miR-155-5p overexpression and knockdown models had successfully been constructed. The associations among CagA, miR-155-5p, and SMAD2/SP1 were evaluated using RNA immunoprecipitation (RIP) and rescue experiments. (3) Results: The expression of miR-155-5p was significantly reduced in GC cells, and the expression of miR-155-5p was further reduced after CagA induction. Both overexpressed CagA and knockdown miR-155-5p cell models enhanced malignant transformation, whereas overexpressed miR-155-5p inhibited malignant transformation in vitro. The function of miR-155-5p on GC cells could be influenced by CagA. We also found that the influence of miR-155-5p on SMAD2 and SP1 could be regulated by CagA. (4) Conclusions: CagA potentially regulates the biological function of GC cells through the miR-155-5p/SMAD2/SP1 axis. miR-155-5p could be a therapeutic target for GC related to CagA.
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Tsukanov VV, Smirnova OV, Kasparov EV, Sinyakov AA, Vasyutin AV, Tonkikh JL, Cherepnin MA. Dynamics of Oxidative Stress in Helicobacter pylori-Positive Patients with Atrophic Body Gastritis and Various Stages of Gastric Cancer. Diagnostics (Basel) 2022; 12:1203. [PMID: 35626358 PMCID: PMC9141138 DOI: 10.3390/diagnostics12051203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 12/24/2022] Open
Abstract
Gastric cancer is a global health problem. The pathogenesis of this disease remains unclear. This study included 198 H. pylori (+) men aged 45 to 60 years old. Group A included 63 practically healthy men, group B included 45 men with severe atrophic body gastritis, group C included 37 men with epithelial gastric cancer stages I–II according to TNM, and group D included 54 men with epithelial gastric cancer stages III–IV according to the TNM scale. The content of malondialdehyde (MDA), diene conjugates (DCs), superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), and glutathione peroxidase (GPO) was detected using an enzyme immunoassay (ELISA) or spectrophotometric methods in the blood plasma. The concentrations of MDA and DC were increased in the patients of group B compared with group A, and in patients of groups C and D compared with groups A and B. The ratio of MDA/SOD and MDA/CAT was decreased in the patients in group D compared with the patients in group C, and was significantly higher compared with group A. The ratios of MDA/GPO and MDA/GST increased linearly and were at a maximum in groups C and D. Our work determined that indicators of oxidative stress may be the biochemical substrate, which brings together the various stages of the Correa cascade, and may explain disease progression. The dynamics of changes in the content of SOD and CAT in the plasma in patients with gastric cancer may be a target of future investigations.
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Yang Y, Huang Y, Lin W, Liu J, Chen X, Chen C, Yu X, Teng L. Host miRNAs-microbiota interactions in gastric cancer. J Transl Med 2022; 20:52. [PMID: 35093110 PMCID: PMC8800214 DOI: 10.1186/s12967-022-03264-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 01/17/2022] [Indexed: 12/24/2022] Open
Abstract
It is widely acknowledged that gastric cancer seriously affects the quality of life and survival of patients. The correlation between the microbiota and gastric cancer has attracted extensive attention in recent years, nonetheless the specific mechanism of its impact on gastric cancer remain largely unclear. Recent studies have shown that in addition to its role in the host’s inflammatory and immune response, the microbiota can also affect the occurrence and development of gastric cancer by affecting the expression of miRNAs. This paper brings together all currently available data on miRNAs, microbiota and gastric cancer, and preliminarily describes the relationship among them.
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Araújo GRL, Marques HS, Santos MLC, da Silva FAF, da Brito BB, Correa Santos GL, de Melo FF. Helicobacter pylori infection: How does age influence the inflammatory pattern? World J Gastroenterol 2022; 28:402-411. [PMID: 35125826 PMCID: PMC8790560 DOI: 10.3748/wjg.v28.i4.402] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 06/21/2021] [Accepted: 01/12/2022] [Indexed: 02/06/2023] Open
Abstract
The inflammatory pattern during Helicobacter pylori (H. pylori) infection is changeable and complex. During childhood, it is possible to observe a predominantly regulatory response, evidenced by high concentrations of key cytokines for the maintenance of Treg responses such as TGF-β1 and IL-10, in addition to high expression of the transcription factor FOXP3. On the other hand, there is a predominance of cytokines associated with the Th1 and Th17 responses among H. pylori-positive adults. In the last few years, the participation of the Th17 response in the gastric inflammation against H. pylori infection has been highlighted due to the high levels of TGF-β1 and IL-17 found in this infectious scenario, and growing evidence has supported a close relationship between this immune response profile and unfavorable outcomes related to the infection. Moreover, this cytokine profile might play a pivotal role in the effectiveness of anti-H. pylori vaccines. It is evident that age is one of the main factors influencing the gastric inflammatory pattern during the infection with H. pylori, and understanding the immune response against the bacterium can assist in the development of alternative prophylactic and therapeutic strategies against the infection as well as in the comprehension of the pathogenesis of the outcomes related to that microorganism.
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Affiliation(s)
- Glauber Rocha Lima Araújo
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Hanna Santos Marques
- Campus Vitória da Conquista, Universidade Estadual do Sudoeste da Bahia, Vitória da Conquista 45083-900, Brazil
| | | | | | - Breno Bittencourt da Brito
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Gabriel Lima Correa Santos
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
| | - Fabrício Freire de Melo
- Instituto Multidisciplinar em Saúde, Universidade Federal da Bahia, Vitória da Conquista 45029-094, Brazil
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Pontes JC, Pontes JC, Silva LLDL, Moraes Filho AVD, Bitencourt CA, Itria A, Carneiro LC, Barbosa MS. Spending Estimates for Gastric Cancer in Central Brazil. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e181069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | | | | | | | - Alexander Itria
- Federal University of Goiás, Brazil; Federal University of Goiás, Brazil
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Zhao G, Zhang Z, Li B, Huang S, Li W, Zhu C, Jiang B, He S, Wang Y, Wang S. Follow-up analysis and histopathological study of gastric mucosa in patients with Helicobacter pylori infection. J Int Med Res 2021; 49:3000605211055397. [PMID: 34939874 PMCID: PMC8733369 DOI: 10.1177/03000605211055397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Objective To investigate the histomorphological characteristics of the gastric mucosa and the prognosis in patients with Helicobacter pylori infection. Methods Progressive damage to the gastric mucosa was examined by immunohistochemistry in 2294 patients with H. pylori infection and follow-up information was analyzed. Results H. pylori initially colonized the mucus layer covered by the gastric mucosa epithelium, then selectively adhered to and destroyed the surface mucus cells causing intra-gastric and extra-gastric lesions. Gastric mucosal damage induced by H. pylori was divided into five stages according to the depth of H. pylori invasion and degree of lesion deterioration: mucilaginous, surface mucocellular, lamina propria lesion, mucosal atrophy, and intraepithelial neoplasia stages. Morphological follow-up analysis revealed no significant difference in 6-month curative effects between stage I and stage II, but significant differences were found between stages II and III, stages III and IV, and between stages IV and stage V, respectively. Conclusions This novel staging strategy may be a valuable tool for diagnosing and predicting the results of gastric mucosal damage induced by H. pylori infection.
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Affiliation(s)
- Guang Zhao
- Department of Clinical Laboratory, 989th Hospital of the Joint Logistic Support Force of the PLA, Luoyang, China
| | - Zhishang Zhang
- Department of Gastroenterology, Shenzhen Hospital of Southern Medical University, Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Baohui Li
- Department of Clinical Laboratory, 989th Hospital of the Joint Logistic Support Force of the PLA, Luoyang, China
| | - Silin Huang
- Department of Gastroenterology, Shenzhen Hospital of Southern Medical University, Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Wensi Li
- Department of Medicine, Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - ChaoYa Zhu
- Department of Pathology, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Bo Jiang
- Department of Pathology, 990th Hospital of the Joint Logistic Support Force of the PLA, Zhumadian, China
| | - Songmao He
- Department of Clinical Laboratory, 989th Hospital of the Joint Logistic Support Force of the PLA, Luoyang, China
| | - Yangkun Wang
- Department of Gastroenterology, Shenzhen Hospital of Southern Medical University, Shenzhen Hospital of Southern Medical University, Shenzhen, China
- Department of Pathology, Foresea Life Insurance Guangzhou Central Hospital, Guangzhou, China
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Oliveira AKS, Silva LLDL, Miguel MP, Blanco AJV, Carneiro LC, Barbosa MS. HELICOBACTER PYLORI cagA VIRULENCE GENE AND SEVERE ESOGASTRODUODENAL DISEASES: IS THERE AN ASSOCIATION? Arq Gastroenterol 2021; 58:468-475. [PMID: 34909852 DOI: 10.1590/s0004-2803.202100000-85] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 07/05/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Helicobacter pylori colonizes approximately half of the world's human population. Its presence in the gastric mucosa is associated with an increased risk of gastric adenocarcinoma, gastric lymphoma, and peptic ulcer disease. In Brazil, the high prevalence of H. pylori infection is a serious health problem. H. pylori virulence factors are associated with an increased risk of serious gastrointestinal disorders. The cagA gene encodes a cytotoxin-A-associated antigen (CagA) that is involved in bacterial pathogenicity. H. pylori strains carrying the cag pathogenicity island (cag-PAI) are significantly associated with severe clinical outcomes and histopathological changes. OBJECTIVE The present study aims to investigate the prevalence of the cagA gene among H. pylori isolates from patients with different gastric pathologies. Further, the study hopes to verify its association with clinical outcomes. In addition, phylogenetic analysis was performed on cagA-positive H. pylori strains from patients with severe and non-severe diseases. METHODS Gastric specimens were collected through a biopsy from 117 patients with different esogastroduodenal diseases. DNA was extracted from these gastric specimens and the polymerase chain reaction was performed to amplify the gene fragments corresponding to the 16S ribosomal RNA and cagA genes using specific primers. The polymerase chain reaction products of selected samples positive for cagA were sequenced. The sequences were aligned with reference sequences from the National Center for Biotechnology Information (NCBI) (Bethesda/USA), and a phylogenetic tree was constructed. RESULTS H. pylori was detected in 65.9% (77/117) of Brazilian patients with different gastroduodenal disorders. Overall, 80.5% (62/77) of the strains were cagA-positive. The ages of patients with cagA-positive strains (15 males and 47 females) ranged from 18 to 74 years. The lesions were categorized as non-severe and severe according to the endoscopic and histopathological reports the most prevalent non-severe esogastroduodenal lesion was gastritis 54/77 (70.12%), followed by esophagitis 12/77 (15.58%) and duodenitis 12/77 (15.58%). In contrast, the most prevalent severe lesions were atrophy 7/77 (9.09%), followed by metaplasia 3/77 (3.86%) and gastric adenocarcinoma 2/77 (2.59%). Phylogenetic analyses performed with the partial sequences of the cagA gene obtained from local strains were grouped in the same clade. No differences in phylogenetic distribution was detected between severe and non-severe diseases. CONCLUSION The cagA gene is highly prevalent among H. pylori isolates from gastric lesions in Brazilian patients. The presence of the cagA gene was not considered a marker of the severity of esogastroduodenal lesions in the present study. This is the first study to investigate the phylogenetic population structure of H. pylori strains in a Brazilian capital, which may improve our understanding of the clinical outcome of H. pylori infection.
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Affiliation(s)
| | | | - Marina Pacheco Miguel
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia, GO, Brasil
| | | | - Lilian Carla Carneiro
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia, GO, Brasil
| | - Mônica Santiago Barbosa
- Universidade Federal de Goiás, Núcleo de Estudos da Helicobacter pylori, Goiânia, GO, Brasil.,Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia, GO, Brasil
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14
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Trivanović D, Pavelić K, Peršurić Ž. Fighting Cancer with Bacteria and Their Toxins. Int J Mol Sci 2021; 22:12980. [PMID: 34884780 DOI: 10.3390/ijms222312980] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 12/26/2022] Open
Abstract
Cancer is one of the most important global health problems that continues to demand new treatment strategies. Many bacteria that cause persistent infections play a role in carcinogenesis. However, since bacteria are well studied in terms of molecular mechanisms, they have been proposed as an interesting solution to treat cancer. In this review, we present the use of bacteria, and particularly bacterial toxins, in cancer therapy, highlighting the advantages and limitations of bacterial toxins. Proteomics, as one of the omics disciplines, is essential for the study of bacterial toxins. Advances in proteomics have contributed to better characterization of bacterial toxins, but also to the development of anticancer drugs based on bacterial toxins. In addition, we highlight the current state of knowledge in the rapidly developing field of bacterial extracellular vesicles, with a focus on their recent application as immunotherapeutic agents.
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Muthusamy S, Jan HM, Hsieh MY, Mondal S, Liu WC, Ko YA, Yang WY, Mong KKT, Chen GC, Lin CH. Enhanced enzymatic production of cholesteryl 6'-acylglucoside impairs lysosomal degradation for the intracellular survival of Helicobacter pylori. J Biomed Sci 2021; 28:72. [PMID: 34706729 PMCID: PMC8549234 DOI: 10.1186/s12929-021-00768-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 10/08/2021] [Indexed: 01/15/2023] Open
Abstract
Background During autophagy defense against invading microbes, certain lipid types are indispensable for generating specialized membrane-bound organelles. The lipid composition of autophagosomes remains obscure, as does the issue of how specific lipids and lipid-associated enzymes participate in autophagosome formation and maturation. Helicobacter pylori is auxotrophic for cholesterol and converts cholesterol to cholesteryl glucoside derivatives, including cholesteryl 6ʹ-O-acyl-α-d-glucoside (CAG). We investigated how CAG and its biosynthetic acyltransferase assist H. pylori to escape host-cell autophagy. Methods We applied a metabolite-tagging method to obtain fluorophore-containing cholesteryl glucosides that were utilized to understand their intracellular locations. H. pylori 26695 and a cholesteryl glucosyltransferase (CGT)-deletion mutant (ΔCGT) were used as the standard strain and the negative control that contains no cholesterol-derived metabolites, respectively. Bacterial internalization and several autophagy-related assays were conducted to unravel the possible mechanism that H. pylori develops to hijack the host-cell autophagy response. Subcellular fractions of H. pylori-infected AGS cells were obtained and measured for the acyltransferase activity. Results The imaging studies of fluorophore-labeled cholesteryl glucosides pinpointed their intracellular localization in AGS cells. The result indicated that CAG enhances the internalization of H. pylori in AGS cells. Particularly, CAG, instead of CG and CPG, is able to augment the autophagy response induced by H. pylori. How CAG participates in the autophagy process is multifaceted. CAG was found to intervene in the degradation of autophagosomes and reduce lysosomal biogenesis, supporting the idea that intracellular H. pylori is harbored by autophago-lysosomes in favor of the bacterial survival. Furthermore, we performed the enzyme activity assay of subcellular fractions of H. pylori-infected AGS cells. The analysis showed that the acyltransferase is mainly distributed in autophago-lysosomal compartments. Conclusions Our results support the idea that the acyltransferase is mainly distributed in the subcellular compartment consisting of autophagosomes, late endosomes, and lysosomes, in which the acidic environment is beneficial for the maximal acyltransferase activity. The resulting elevated level of CAG can facilitate bacterial internalization, interfere with the autophagy flux, and causes reduced lysosomal biogenesis. Supplementary Information The online version contains supplementary material available at 10.1186/s12929-021-00768-w.
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Affiliation(s)
- Sasikala Muthusamy
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan.,Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, National Chung-Hsing University and Academia Sinica, Taipei, 11529, Taiwan.,Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 40227, Taiwan.,Biotechnology Center, National Chung-Hsing University, Taichung, 40227, Taiwan
| | - Hau-Ming Jan
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
| | - Ming-Yen Hsieh
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
| | - Soumik Mondal
- Department of Applied Chemistry, National Chiao Tung University, Hsin-Chu, 30010, Taiwan
| | - Wen-Chun Liu
- Biomedical Translation Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Yi-An Ko
- Biomedical Translation Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Wei-Yuan Yang
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Kwok-Kong Tony Mong
- Department of Applied Chemistry, National Chiao Tung University, Hsin-Chu, 30010, Taiwan
| | - Guang-Chao Chen
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Chun-Hung Lin
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan. .,Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, National Chung-Hsing University and Academia Sinica, Taipei, 11529, Taiwan. .,Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 40227, Taiwan. .,Biotechnology Center, National Chung-Hsing University, Taichung, 40227, Taiwan. .,Institute of Biochemical Sciences, National Taiwan University, Taipei, 10617, Taiwan. .,Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
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16
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de Lima Silva LL, Oliveira AKS, Gama AR, Ramos AFPL, Silva AMTC, Blanco AJV, Vieira JDG, Rasmussem LT, Carneiro LC, Barbosa MS. Helicobacter pylori virulence dupA gene: risk factor or protective factor? Braz J Microbiol 2021; 52:1921-1927. [PMID: 34255308 DOI: 10.1007/s42770-021-00553-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/21/2021] [Indexed: 12/19/2022] Open
Abstract
Helicobacter pylori is the etiological agent of chronic gastritis, peptic ulcer, and gastric cancer. The duodenal ulcer-promoting gene dupA, which is located in the plasticity region of the H. pylori genome, is homologous to the virB gene which encodes a type IV secretion protein in Agrobacterium tumefaciens. Studies have shown associations between H. pylori dupA-positive strains and gastroduodenal diseases. However, whether dupA acts as a risk factor or protective factor in these diseases remains unclear. Therefore, in this study, we aimed to verify the presence of the dupA gene in infectious H. pylori strains in the Brazilian mid-west and to investigate its association with the clinical outcomes of patients with dyspepsia. Additionally, the phylogenetic origin of the strains was determined. Gastric biopsies from 117 patients with dyspepsia were analyzed using histological and molecular techniques. The hpx gene (16S rRNA) was used to screen for H. pylori infection, and positive samples were then subjected to dupA gene detection and sequencing. The estimated prevalence of H. pylori infection was 64.1%, with the dupA gene being detected in a high proportion of infectious strains (70.7%). Furthermore, a risk analysis revealed that for women, a dupA-positive H. pylori infection increased the chance of developing gastritis by twofold. The partial dupA sequences from isolated infectious strains in this work are similar to those of strains isolated in westerns countries. This study provides useful insights for understanding the role of the H. pylori dupA gene in disease development.
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Affiliation(s)
- Lucas Luiz de Lima Silva
- Instituto de Patologia Tropical e Saúde Pública, Núcleo de Estudo da Helicobacter pylori, Departamento de Biociências e Tecnologia, Universidade Federal de Goiás, Leste Universitário, Goiânia, GO, Brazil
| | - Ana Karoline Silva Oliveira
- Instituto de Patologia Tropical e Saúde Pública, Núcleo de Estudo da Helicobacter pylori, Departamento de Biociências e Tecnologia, Universidade Federal de Goiás, Leste Universitário, Goiânia, GO, Brazil
| | - Aline Rodrigues Gama
- Instituto de Patologia Tropical e Saúde Pública, Núcleo de Estudo da Helicobacter pylori, Departamento de Biociências e Tecnologia, Universidade Federal de Goiás, Leste Universitário, Goiânia, GO, Brazil
| | - Amanda Ferreira Paes Landim Ramos
- Instituto de Patologia Tropical e Saúde Pública, Núcleo de Estudo da Helicobacter pylori, Departamento de Biociências e Tecnologia, Universidade Federal de Goiás, Leste Universitário, Goiânia, GO, Brazil
| | | | - Angel José Vieira Blanco
- Departamento de Áreas Acadêmicas, Instituto Federal de Educação Ciência e Tecnologia, Campus Inhumas, Inhumas, GO, Brazil
| | - José Daniel Gonçalves Vieira
- Instituto de Patologia Tropical e Saúde Pública, Núcleo de Estudo da Helicobacter pylori, Departamento de Biociências e Tecnologia, Universidade Federal de Goiás, Leste Universitário, Goiânia, GO, Brazil
| | | | - Lilian Carla Carneiro
- Instituto de Patologia Tropical e Saúde Pública, Núcleo de Estudo da Helicobacter pylori, Departamento de Biociências e Tecnologia, Universidade Federal de Goiás, Leste Universitário, Goiânia, GO, Brazil
| | - Mônica Santiago Barbosa
- Instituto de Patologia Tropical e Saúde Pública, Núcleo de Estudo da Helicobacter pylori, Departamento de Biociências e Tecnologia, Universidade Federal de Goiás, Leste Universitário, Goiânia, GO, Brazil.
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17
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Jia J, Zhang C, Liu Y, Huang Y, Bai Y, Hang X, Zeng L, Zhu D, Bi H. Armeniaspirol A: a novel anti-Helicobacter pylori agent. Microb Biotechnol 2021; 15:442-454. [PMID: 33780131 PMCID: PMC8867979 DOI: 10.1111/1751-7915.13807] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/11/2021] [Indexed: 12/25/2022] Open
Abstract
Antibiotic resistance in Helicobacter pylori has been growing worldwide with current treatment regimens. Development of new compounds for treatment of H. pylori infections is urgently required to achieve a successful eradication therapy in the future. Armeniaspirols, a novel class of natural products isolated from Streptomyces armeniacus, have been previously identified as antibacterial agents against Gram‐positive pathogens. In this study, we found that armeniaspirol A (ARM1) exhibited potent antibacterial activity against H. pylori, including multidrug‐resistant strains, with MIC range values of 4–16 μg ml‐1. The underlying mechanism of action of ARM1 against H. pylori involved the disruption of bacterial cell membranes. Also, ARM1 inhibited biofilm formation, eliminated preformed biofilms and killed biofilm‐encased H. pylori in a dose‐dependent manner. In a mouse model of multidrug‐resistant H. pylori infection, dual therapy with ARM1 and omeprazole showed efficient in vivo killing efficacy comparable to the standard triple therapy, and induced negligible toxicity against normal tissues. Moreover, at acidic pH 2.5, ARM1 exhibited a much more potent anti‐H. pylori activity than metronidazole. Thus, these findings demonstrated that ARM1 is a novel potent anti‐H. pylori agent, which can be developed as a promising drug lead for treatment of H. pylori infections.
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Affiliation(s)
- Jia Jia
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter pylori Research Centre, Nanjing Medical University, Nanjing, Jiangsu, 211166, China.,Department of Gastroenterology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Chongwen Zhang
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter pylori Research Centre, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Yaqi Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, Hubei, 430071, China
| | - Yanqiang Huang
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter pylori Research Centre, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Yuefan Bai
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter pylori Research Centre, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Xudong Hang
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter pylori Research Centre, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Liping Zeng
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter pylori Research Centre, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Dongqing Zhu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, Hubei, 430071, China
| | - Hongkai Bi
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter pylori Research Centre, Nanjing Medical University, Nanjing, Jiangsu, 211166, China.,Department of Gastroenterology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
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Pourfarzi F, Zahirian Moghadam T, Zandian H, Malekzadeh R, Yazdanbod A. Cost-effectiveness analysis of two routine therapeutic methods for Helicobacter pylori eradication: a Persian cohort-based study. Gastroenterol Hepatol Bed Bench 2021; 14:250-259. [PMID: 34221265 PMCID: PMC8245840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 05/12/2021] [Indexed: 11/16/2022]
Abstract
AIM This study aimed to analyze the cost-effectiveness of two routine therapeutic methods for H. pylori eradication in Iran. BACKGROUND Because of the importance of Helicobacter pylori (H. pylori) eradication on gastric cancer prevalence and costs, an economic analysis of the eradication methods is essential for health systems. METHODS This cross-sectional study was conducted on 7,496 participants with positive Hepadnaviridae (HPsAg) test results for H. pylori; 6,163 of them were treated with furazolidone (group A), and 1,333 participants were treated with clarithromycin (group B). Data on GP visits, medications, and HPsAg costs as direct costs and absence from work and transportation as indirect costs was collected by researcher-made questionnaire. Indirect costs were calculated based on face-to-face interviews with 365 patients of the Persian Cohort Center. Successful eradication of H. pylori infection (negative HPsAg) was defined as the effectiveness of the interventions. Incremental cost-effectiveness ratio (ICER) was used to compare the overall results. RESULTS The total direct cost of H. pylori for groups A and B were estimated at 13.7 and 5.83 billion IRR, respectively. The highest and lowest percentages of total costs were the cost of diagnostic services and the time cost, respectively. There was a significant difference between the two groups in drug costs (p<0.001). The effect ratio for groups A and B was 85.93% and 96.54%, respectively. Cost per effectiveness was higher for clarithromycin (CE=3,250,170 IRR) than for furazolidone (CE=2,988,488 IRR), and ICER showed that 5.1 Million IRR per participant is needed to eradicate H. pylori. CONCLUSION Based on the results, furazolidone was more cost-effective than clarithromycin for H. pylori treatment. Therefore, due to the high prevalence of H. pylori and the economic conditions of the health system in Iran, furazolidone can be a cost-effective choice between the two conventional treatment methods considering the results of further research and possible side effects.
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Affiliation(s)
- Farhad Pourfarzi
- Digestive Diseases Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Telma Zahirian Moghadam
- Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Hamed Zandian
- Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Reza Malekzadeh
- Digestive Oncology Research Center, Digestive Diseases Research Institute, Shariati Hospital, Tehran University of Medical Sciences School of Commerce, Tehran, Iran
| | - Abbas Yazdanbod
- Digestive Diseases Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
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19
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Szymczak A, Ferenc S, Majewska J, Miernikiewicz P, Gnus J, Witkiewicz W, Dąbrowska K. Application of 16S rRNA gene sequencing in Helicobacter pylori detection. PeerJ 2020; 8:e9099. [PMID: 32440373 PMCID: PMC7229771 DOI: 10.7717/peerj.9099] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 04/09/2020] [Indexed: 12/13/2022] Open
Abstract
Helicobacter pylori is one of the major stomach microbiome components, promoting development of inflammation and gastric cancer in humans. H. pylori has a unique ability to transform into a coccoidal form which is difficult to detect by many diagnostic methods, such as urease activity detection, and even histopathological examination. Here we present a comparison of three methods for H. pylori identification: histological assessment (with eosin, hematoxylin, and Giemsa staining), polymerase chain reaction (PCR) detection of urease (ureA specific primers), and detection by 16S rRNA gene sequencing. The study employed biopsies from the antral part of the stomach (N = 40). All samples were assessed histologically which revealed H. pylori in eight patients. Bacterial DNA isolated from the bioptates was used as a template for PCR reaction and 16S rRNA gene sequencing that revealed H. pylori in 13 and in 20 patients, respectively. Thus, 16S rRNA gene sequencing was the most sensitive method for detection of H. pylori in stomach biopsy samples.
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Affiliation(s)
- Aleksander Szymczak
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Stanisław Ferenc
- Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland
| | - Joanna Majewska
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Paulina Miernikiewicz
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Jan Gnus
- Medical Academy in Wroclaw, Wrocław, Poland
| | - Wojciech Witkiewicz
- Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland
| | - Krystyna Dąbrowska
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
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20
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Elsalem L, Jum'ah AA, Alfaqih MA, Aloudat O. The Bacterial Microbiota of Gastrointestinal Cancers: Role in Cancer Pathogenesis and Therapeutic Perspectives. Clin Exp Gastroenterol 2020; 13:151-185. [PMID: 32440192 PMCID: PMC7211962 DOI: 10.2147/ceg.s243337] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 04/13/2020] [Indexed: 12/24/2022] Open
Abstract
The microbiota has an essential role in the pathogenesis of many gastrointestinal diseases including cancer. This effect is mediated through different mechanisms such as damaging DNA, activation of oncogenic pathways, production of carcinogenic metabolites, stimulation of chronic inflammation, and inhibition of antitumor immunity. Recently, the concept of "pharmacomicrobiomics" has emerged as a new field concerned with exploring the interplay between drugs and microbes. Mounting evidence indicates that the microbiota and their metabolites have a major impact on the pharmacodynamics and therapeutic responses toward anticancer drugs including conventional chemotherapy and molecular-targeted therapeutics. In addition, microbiota appears as an attractive target for cancer prevention and treatment. In this review, we discuss the role of bacterial microbiota in the pathogenesis of different cancer types affecting the gastrointestinal tract system. We also scrutinize the evidence regarding the role of microbiota in anticancer drug responses. Further, we discuss the use of probiotics, fecal microbiota transplantation, and antibiotics, either alone or in combination with anticancer drugs for prevention and treatment of gastrointestinal tract cancers.
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Affiliation(s)
- Lina Elsalem
- Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Ahmad A Jum'ah
- Department of Conservative Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan
| | - Mahmoud A Alfaqih
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Osama Aloudat
- Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
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Woo HJ, Yang JY, Lee MH, Kim HW, Kwon HJ, Park M, Kim SK, Park SY, Kim SH, Kim JB. Inhibitory Effects of β-Caryophyllene on Helicobacter pylori Infection In Vitro and In Vivo. Int J Mol Sci 2020; 21:ijms21031008. [PMID: 32028744 PMCID: PMC7037973 DOI: 10.3390/ijms21031008] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 01/29/2020] [Accepted: 01/30/2020] [Indexed: 01/01/2023] Open
Abstract
The human specific bacterial pathogen Helicobacter pylori (H. pylori) is associated with severe gastric diseases, including gastric cancer. Recently, the increasing resistance makes the usage of antibiotics less effectively. Therefore, development of a new antimicrobial agent is required to control H. pylori infection. In the current study, the inhibitory effect of β-caryophyllene on H. pylori growth, as well as the antibacterial therapeutic effect, has been demonstrated. β-caryophyllene inhibited H. pylori growth via the downregulation of dnaE, dnaN, holB, and gyrA and also downregulated virulence factors such as CagA, VacA, and SecA proteins. β-caryophyllene inhibited expression of several T4SS components, so that CagA translocation into H. pylori-infected AGS gastric cancer cells was decreased by β-caryophyllene treatment. β-caryophyllene also inhibited VacA entry through the downregulation of T5aSS. After β-caryophyllene administration on Mongolian gerbils, the immunohistochemistry (IHC) and Hematoxylin&Eosin stains showed therapeutic effects in the treated groups. Hematological data, which was consistent with histological data, support the therapeutic effect of β-caryophyllene administration. Such a positive effect of β-caryophyllene on H. pylori infection potently substantiates the natural compound as being capable of being used as a new antimicrobial agent or functional health food to help patients who are suffering from gastroduodenal diseases due to H. pylori infection.
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Affiliation(s)
- Hyun Jun Woo
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea; (H.J.W.); (J.Y.Y.); (H.W.K.); (H.J.K.)
- Department of Clinical Laboratory Science, College of Medical Sciences, Daegu Haany University, Gyeongsan 38610, Korea
| | - Ji Yeong Yang
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea; (H.J.W.); (J.Y.Y.); (H.W.K.); (H.J.K.)
| | - Min Ho Lee
- Forensic DNA Division, National Forensic Service, Wonju 26460, Korea;
| | - Hyun Woo Kim
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea; (H.J.W.); (J.Y.Y.); (H.W.K.); (H.J.K.)
| | - Hye Jin Kwon
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea; (H.J.W.); (J.Y.Y.); (H.W.K.); (H.J.K.)
| | - Min Park
- Department of Biomedical Laboratory Science, Daekyeung University, Gyeongsan 38547, Korea;
| | - Sung-kyu Kim
- SFC BIO Co., Ltd. 1505-1ho, Daerung-town, 25, Gasan digital 1 ro, Geumcheon-gu 08594, Seoul, Korea;
| | - So-Young Park
- College of Pharmacy, Dankook University, 119 Dandae-ro, Cheonan-si, Chungnam 31116, Korea;
| | - Sa-Hyun Kim
- Department of Clinical Laboratory Science, Semyung University, Jaecheon 27136, Korea
- Correspondence: (S.-H.K.); (J.-B.K.)
| | - Jong-Bae Kim
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju 26493, Korea; (H.J.W.); (J.Y.Y.); (H.W.K.); (H.J.K.)
- Correspondence: (S.-H.K.); (J.-B.K.)
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Rodrigues MF, Guerra MR, Alvarenga AVRD, Souza DZDO, Costa RAVES, Cupolilo SMN. HELICOBACTER PYLORI INFECTION AND GASTRIC CANCER PRECURSOR LESIONS: PREVALENCE AND ASSOCIATED FACTORS IN A REFERENCE LABORATORY IN SOUTHEASTERN BRAZIL. Arq Gastroenterol 2019; 56:419-424. [PMID: 31800739 DOI: 10.1590/s0004-2803.201900000-84] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 10/15/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Helicobacter pylori infection is the most important risk factor for gastric atrophy and intestinal metaplasia, both considered gastric cancer precursor lesions. Therefore, the investigation of the occurrence of H. pylori infection, precursor lesions and associated factors guides the adoption of specific strategies for the control this type of cancer. OBJECTIVE To evaluate the prevalence of H. pylori infection in patients undergoing upper digestive endoscopy, as well as the prevalence of intestinal metaplasia, atrophy and chronic inflammation and their association with H. pylori infection. METHODS A retrospective study was performed based on reports of gastric endoscopic biopsies performed in a private laboratory affiliated to the Brazilian Public Health System (SUS). Patients were evaluated for age, gender and type of health service. The samples were evaluated for the presence of H. pylori, and also of chronic inflammation, intestinal metaplasia and glandular atrophy. RESULTS Of a total of 4,604 patients (mean age 51±16.6), 63.9% were female and 63.1% coming from private health care service. The prevalence of H. pylori infection was 31.7% (n=1,459), and the percentage of infection was significantly higher in patients from public health service (42.0%) in relation to patients from private health service (25.6%). Among H. pylori (+) patients, a higher percentage of intestinal metaplasia (17.7% vs 13.3%) and glandular atrophy (17.6% vs 6.9%) were observed when compared to those H. pylori (-) (P<0.01). From the patients H. pylori (+) with at least one type of precursor lesion (n=418), 161 (38.5%) had metaplasia and chronic inflammation, 160 (38.3%) had atrophy and chronic inflammation and finally 97 (23.2%) presented metaplasia, atrophy and chronic inflammation simultaneously. CONCLUSION The present study reinforces the association of H. pylori infection with gastric cancer precursor lesions in a Brazilian population, emphasizing the importance of infection prevention measures, as well as the treatment of infected patients, especially in regions with lower socioeconomic levels that show a higher prevalence of infection by H. pylori.
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Affiliation(s)
| | - Maximiliano Ribeiro Guerra
- Universidade Federal de Juiz de Fora, Programa de Pós-Graduação em Saúde Coletiva, Juiz de Fora, MG, Brasil
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Borges SS, Ramos AFPL, Moraes Filho AVD, Braga CADSB, Carneiro LC, Barbosa MS. [ARTICLE PARTIAL RETRACTION] PREVALENCE OF HELICOBACTER PYLORI INFECTION IN DYSPEPTIC PATIENTS AND ITS ASSOCIATION WITH CLINICAL RISK FACTORS FOR DEVELOPING GASTRIC ADENOCARCINOMA. Arq Gastroenterol 2019; 56:66-70. [PMID: 31141074 DOI: 10.1590/s0004-2803.201900000-03] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 01/31/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND In Brazil, particularly in the underdeveloped localities, the prevalence of Helicobacter pylori (H. pylori) infections can range up to 90%. These rates are higher in older individuals and vary by country region. H. pylori infections are linked to the development of gastric pathologies, namely mild to moderate gastritis, gastroenteritis, peptic ulcer, intestinal metaplasia, and gastric cancer. In 1994, this organism was classified by the International Agency for Research on Cancer (IARC) as pertaining to the Group 1 carcinogen for gastric adenocarcinoma etiology. Gastric cancer represents a significant public health problem, being the fourth most common malignant tumor and the second largest cause of cancer-related deaths. OBJECTIVE To investigate the prevalence of H. pylori infection in dyspeptic patients and determine the link between clinical risk factors and gastric adenocarcinoma diagnosis. METHODS Polymerase chain reaction (PCR) analysis was employed for molecular diagnosis of gastric tissue biopsies collected from 113 dyspeptic patients at the University Hospital of Federal University of Goiás. Molecular analyses allowed the identification of H. pylori infections. Furthermore, histopathological examinations were performed to determine the clinical risks of developing gastric malignancies. RESULTS The test results identified 69 individuals older than 44 years, from 75 (66.4%) positive H. pylori infection samples. The prevalence of gastric adenocarcinoma in this study was 1.3%. Among the infected patients, six (8.2%) had high risk, and 67 (91.8%) had a low risk of developing gastric cancer (P<0.05). CONCLUSION This study shows a high prevalence of H. pylori infection and identifies its contribution to gastric inflammations, which in the long term are manifested in high-risk clinical factors for the development of gastric adenocarcinoma.
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Affiliation(s)
| | | | - Aroldo Vieira de Moraes Filho
- Universidade Federal de Goiás, Instituto de Ciências da Saúde, Programa de Pós-Doutorado em Ciências da Saúde, Goiânia, GO, Brasil
| | - Carla Afonso da Silva Bitencourt Braga
- Universidade Federal de Goiás, Faculdade de Farmácia, Goiânia, GO, Brasil.,Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia, GO, Brasil
| | - Lilian Carla Carneiro
- Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia, GO, Brasil
| | - Mônica Santiago Barbosa
- Universidade Federal de Goiás, Faculdade de Farmácia, Goiânia, GO, Brasil.,Universidade Federal de Goiás, Instituto de Patologia Tropical e Saúde Pública, Goiânia, GO, Brasil
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25
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Mohamed WA, Schaalan MF, Ramadan B. The expression profiling of circulating miR-204, miR-182, and lncRNA H19 as novel potential biomarkers for the progression of peptic ulcer to gastric cancer. J Cell Biochem 2019; 120:13464-13477. [PMID: 30945348 DOI: 10.1002/jcb.28620] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/17/2019] [Accepted: 02/28/2019] [Indexed: 12/17/2022]
Abstract
Deregulation of noncoding RNAs, microRNAs (miRNAs) and long noncoding RNA (lncRNA), are implicated in the initiation and progression of gastric cancer (GC). This study is a pilot case-control study carried out on 75 subjects, 40 of them were Helicobacter pylori-gastric ulcer patients and 35 were GC patients recruited from the Gastrointestinal Endoscopy Unit in Al-Kasr Al-Aini Hospital, Cairo University in Egypt. Real-time PCR was performed to evaluate the expression level of serum miR-204, miR-182, and lncRNA H19 in patients with peptic ulcer-progressed GC vs nonprogressed peptic ulcer patients. Fibroblast growth factor 18 (FGF-18)/FGF receptor 2 (FGFR2) expression and their downstream immunological and inflammatory signaling markers were assessed and their association with the addressed noncoding RNAs investigated. As regards miR-204 and miR-182, they were significantly increased (12.5 and 2.6 folds, respectively) in GU samples, compared with those of healthy control levels. The elevated levels of these miRNAs were significantly de-escalated in GC samples compared with GU and the fold decrease valued 2.2 fold for miR-204 and 1.8 folds for miR-182. On the other hand, the significant escalation in the level of lnRNA H19 in GU recorded a 16.6 fold increase and further elevation in its levels was evident in GC samples. The herein assessed miRNAs are correlated with disease duration and FGFR2 with miR-182 being significantly correlated with all inflammatory markers, TAC, INF-γ, matrix metallopeptidase 9, and FGF-18. In terms of diagnostic accuracy of assessed miRNAs (stages III to IV), the receiver operating characteristic analysis indicated that serum lncRNA H19 showed the highest diagnostic accuracy (95.5%), specificity (100%), and sensitivity (90.9%), compared with miR-204 and miR-182, which showed the same specificity (60%), sensitivity (72.7%), and diagnostic accuracy (68.8%). Our findings conclude that lnRNA H19, miR-204, and miR-182 may function as novel prospective plasma biomarkers to detect GC and its progression from H. pylori-peptic ulcer, which would be helpful to improve the theranostics of GC.
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Affiliation(s)
- Waleed A Mohamed
- Department of Chemistry, Kasr El Aini Teaching Hospital, Cairo University, Cairo, Egypt
| | - Mona F Schaalan
- Department of Clinical Pharmacy and Pharmacy Practice, Clinical and Translational Research Unit, Faculty of Pharmacy, Misr International University, Cairo, Egypt
| | - Basma Ramadan
- Department of Physiology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
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Zhou C, Pan R, Li B, Huang T, Zhao J, Ying J, Duan S. GPX3 hypermethylation in gastric cancer and its prognostic value in patients aged over 60. Future Oncol 2019; 15:1279-1289. [PMID: 30924352 DOI: 10.2217/fon-2018-0674] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
AIM This study investigated the association between GPX3 methylation and gastric cancer (GC), and explored its prognostic value in patients undergoing radical gastrectomy. MATERIALS & METHODS The methylation levels of tumor and paracancerous tissues were detected by quantitative methylation-specific PCR method. RESULTS GPX3 was hypermethylated in GC (p = 4E-4), and was specific for patients with lymphatic metastasis (+), tumor invasion depth >3 cm and patients with poor differentiation. Additionally, GPX3 hypermethylation predicts a tumor recurrence in patients aged >60 (p = 0.019). Data from The Cancer Genome Atlas (TCGA) further confirmed GPX3 hypermethylation (cg21504918: -0.08 vs -0.25, p = 0.001). Additionally, TCGA showed an inverse correlation between GPX3 methylation and expression (p = 7E-18, r = -0.427). Data analysis of Gene Expression Omnibus (GEO) database showed that 5-aza-2'-deoxycytidine demethylating agent increased GPX3 expression (fold-change >2.19, p = 0.001). CONCLUSION Our results indicated GPX3 hypermethylation in GC, and predicted a shorter tumor recurrence time in patients aged >60.
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Affiliation(s)
- Cong Zhou
- Medical Genetics Center, Department of Genetics, School of Medicine, Ningbo University, Ningbo, Zhejiang, PR China
| | - Ranran Pan
- Medical Genetics Center, Department of Genetics, School of Medicine, Ningbo University, Ningbo, Zhejiang, PR China
| | - Bin Li
- Medical Genetics Center, Department of Genetics, School of Medicine, Ningbo University, Ningbo, Zhejiang, PR China
| | - Tianyi Huang
- Medical Genetics Center, Department of Genetics, School of Medicine, Ningbo University, Ningbo, Zhejiang, PR China
| | - Jun Zhao
- Medical Genetics Center, Department of Genetics, School of Medicine, Ningbo University, Ningbo, Zhejiang, PR China
| | - Jieer Ying
- Department of Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, PR China
| | - Shiwei Duan
- Medical Genetics Center, Department of Genetics, School of Medicine, Ningbo University, Ningbo, Zhejiang, PR China
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Abstract
The life span of patients with primary and secondary immunodeficiencies has increased due to recent advances in diagnostic and therapeutic strategies. Primary immune deficiencies (PIDs) are genetic disorders that predispose patients to frequent infections, autoimmunity and malignancies. Genomic instability due to defective DNA repair processes and other unknown mechanisms in patients with PID leads to an enhanced risk of cancer. PIDs were originally described as rare diseases occurring only in infants and young children, which are associated with severe clinical symptoms. However, advances in gene sequencing technologies, have revealed that they are much more common than originally appreciated and are present in older children, adolescents, and adults. After infection, malignancy is the most prevalent cause of death in both children and adults with PIDs. The overall risk of developing cancer in patients with PID is estimated to range from 4.7 to 5.7 percent. A 1.4 to 1.6-fold excess relative risk of cancer has been reported for PIDs. Increasing awareness among physicians regarding PID and cancer may lead to earlier diagnosis which may decrease morbidity and mortality. In this paper, we review the various categories of PIDs in children and highlight their association with various malignancies. MEDLINE was searched to identify articles for inclusion. Three authors have independently screened literature search results from MEDLINE and abstracted data from studies dealing with cancers of children among primary immune deficiencies.
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Affiliation(s)
- Rejin Kebudi
- Department of Pediatrics, Division of Pediatric Hematology- Oncology, Oncology Institute, Istanbul University, Istanbul, Turkey.,Department of Pediatrics, Division of Pediatric Hematology-Oncology, Cerrahpasa Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ayca Kiykim
- Department of Pediatrics, Division of Pediatric Allergy and Immunology, Cerrahpasa Faculty of Medicine, Istanbul University, Cerrahpasa, Istanbul, Turkey
| | - Merve K Sahin
- Department of Pediatrics, Faculty of Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
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28
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Bruno G, Rocco G, Zaccari P, Porowska B, Mascellino MT, Severi C. Helicobacter pylori Infection and Gastric Dysbiosis: Can Probiotics Administration Be Useful to Treat This Condition? Can J Infect Dis Med Microbiol 2018; 2018:6237239. [PMID: 30275917 PMCID: PMC6151681 DOI: 10.1155/2018/6237239] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 07/30/2018] [Indexed: 02/07/2023]
Abstract
Helicobacter pylori (Hp) is responsible for one of the most common infections in the world. The prevalence exceeds 50% of the population in developing countries, and approximately one-third of the adults are colonized in North Europe and North America. It is considered a major pathogenic agent of chronic gastritis, peptic ulcer, atrophic gastritis, gastric cancer, and mucosa-associated lymphoid tissue lymphoma (MALT). Hp colonization modifies the composition of gastric microbiota that could drive the development of gastric disorders. Currently, an emerging problem in Hp treatment is represented by the increasing rate of antimicrobial therapy resistance. In this context, the search for adjuvant agents can be very useful to overcome this issue and probiotics administration can represent a valid option. The aim of this review is to describe the gastric microbiota changes during Hp colonization, the mechanisms of action, and a possible role of probiotics in the treatment of this infection.
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Affiliation(s)
- Giovanni Bruno
- Department of Internal Medicine and Medical Specialties, Gastroenterology Unit, Sapienza University, Rome, Italy
| | - Giulia Rocco
- Department of Internal Medicine and Medical Specialties, Gastroenterology Unit, Sapienza University, Rome, Italy
| | - Piera Zaccari
- Department of Internal Medicine and Medical Specialties, Gastroenterology Unit, Sapienza University, Rome, Italy
| | - Barbara Porowska
- Department of Cardio-Thoracic, Vascular Surgery and Transplants, Sapienza University, Rome, Italy
| | | | - Carola Severi
- Department of Internal Medicine and Medical Specialties, Gastroenterology Unit, Sapienza University, Rome, Italy
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Pucułek M, Machlowska J, Wierzbicki R, Baj J, Maciejewski R, Sitarz R. Helicobacter pylori associated factors in the development of gastric cancer with special reference to the early-onset subtype. Oncotarget 2018; 9:31146-31162. [PMID: 30123433 PMCID: PMC6089554 DOI: 10.18632/oncotarget.25757] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 06/22/2018] [Indexed: 02/07/2023] Open
Abstract
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.
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Affiliation(s)
| | | | - Ryszard Wierzbicki
- 2 Department of Surgery with Trauma, Orthopaedic and Urological Subunit, Independent Public Health Care Center of the Ministry of Interior and Administration in Lublin, Poland
- 3 Department of Surgical Oncology, Medical University of Lublin, Poland
| | - Jacek Baj
- 1 Department of Human Anatomy, Medical University of Lublin, Poland
| | | | - Robert Sitarz
- 1 Department of Human Anatomy, Medical University of Lublin, Poland
- 2 Department of Surgery with Trauma, Orthopaedic and Urological Subunit, Independent Public Health Care Center of the Ministry of Interior and Administration in Lublin, Poland
- 4 Department of Surgery, St. John's Cancer Center, Lublin, Poland
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30
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Tsukanov VV, Smirnova OV, Kasparov EV, Sinyakov AA, Vasyutin AV, Tonkikh YL. Changes in the indices of prooxidant and antioxidant systems in blood plasma in men with atrophic gastritis and gastric cancer. TERAPEVT ARKH 2018; 90:24-27. [PMID: 30701768 DOI: 10.26442/terarkh201890224-27] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIM To study changes in the indices of prooxidant and antioxidant systems in plasma in men with atrophic gastritis and gastric cancer. MATERIALS AND METHODS The study included 60 healthy men, 42 patients with atrophic gastritis and 50 men, nicardipine patients with gastric cancer stage II according to TNM. All patients underwent serological diagnosis of diffuse atrophic gastritis (definition of pepsinogens and gas- trin-17) and Helicobacter pylori infection. The diagnosis of "atrophic gastritis" was verified by morphological examination of biopsy speci- mens obtained during fibroesophagogastroduodenoscopy. Diagnosis of gastric cancer was carried out in the Krasnoyarsk regional oncologic dispensary on the basis of a comprehensive instrumental and morphological examination. All patients spectrophotometric methods in plasma was determined the content of diene conjugates (DC), malonic dialdehyde (MDA), glutathione-S-transferase (GST), glutathione peroxidase (GPO), superoxide dismutase (SOD) and catalase. RESULTS The concentration of SOD, GST, GPO and catalase had no significant differences in patients with atrophic gastritis and gastric cancer and prevailed in comparison with healthy persons. Patients with cancer of the stomach content in the blood plasma DK 2.7 times and MDA at 35.2 times higher than healthy individuals, indicating severe oxidative stress in patients with cancer. In patients with atrophic gastritis was ob- served similar but less pronounced pattern. CONCLUSION The results indicate the presence of oxidative stress in men with atrophic gastritis and gastric cancer.
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Affiliation(s)
- V V Tsukanov
- Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science (FRC KSC SB RAS) separate division "Scientific Research Institute of medical problems of the North" (SRI MPN), Krasnoyarsk, Russia
| | - O V Smirnova
- Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science (FRC KSC SB RAS) separate division "Scientific Research Institute of medical problems of the North" (SRI MPN), Krasnoyarsk, Russia
| | - E V Kasparov
- Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science (FRC KSC SB RAS) separate division "Scientific Research Institute of medical problems of the North" (SRI MPN), Krasnoyarsk, Russia
| | - A A Sinyakov
- Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science (FRC KSC SB RAS) separate division "Scientific Research Institute of medical problems of the North" (SRI MPN), Krasnoyarsk, Russia
| | - A V Vasyutin
- Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science (FRC KSC SB RAS) separate division "Scientific Research Institute of medical problems of the North" (SRI MPN), Krasnoyarsk, Russia
| | - Yu L Tonkikh
- Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science (FRC KSC SB RAS) separate division "Scientific Research Institute of medical problems of the North" (SRI MPN), Krasnoyarsk, Russia
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Abstract
Ubc13 is an ubiquitin E2 conjugating enzyme that participates with many different E3 ligases to form lysine 63-linked (Lys63) ubiquitin chains that are critical to signaling in inflammatory and DNA damage response pathways. Recent studies have suggested Ubc13 as a potential therapeutic target for intervention in various human diseases including several different cancers, alleviation of anti-cancer drug resistance, chronic inflammation, and viral infections. Understanding a potential therapeutic target from different angles is important to assess its usefulness and potential pitfalls. Here we present a global review of Ubc13 from its structure, function, and cellular activities, to its natural and chemical inhibition. The aim of this article is to review the literature that directly implicates Ubc13 in a biological function, and to integrate structural and mechanistic insights into the larger role of this critical E2 enzyme. We discuss observations of multiple Ubc13 structures that suggest a novel mechanism for activation of Ubc13 that involves conformational change of the active site loop.
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Affiliation(s)
- Curtis D Hodge
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Leo Spyracopoulos
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada
| | - J N Mark Glover
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada
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Liu Z, Shi Y, Na Y, Zhang Q, Cao S, Duan X, Zhang X, Yang H, Jin T, Li Y. Genetic polymorphisms in TNIP1 increase the risk of gastric carcinoma. Oncotarget 2018; 7:40500-40507. [PMID: 27250029 PMCID: PMC5130023 DOI: 10.18632/oncotarget.9637] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 05/13/2016] [Indexed: 12/31/2022] Open
Abstract
The distribution and levels of TNIP1 in malignant and normal gastric mucosa are different, but it is not known whether TNIP1 polymorphisms are related to gastric carcinogenesis. To assess the association between four TNIP1 SNPs (rs3792792, rs4958881, rs7708392, rs10036748) and carcinogenesis, we used Sequenom Mass-ARRAY technology to determine the genotypes of 302 gastric carcinoma patients and 300 healthy controls in a Northwest Chinese Han population. These data were then compared using the Chi-square test/Fisher's exact test, genetic model analysis, and haplotype analysis. Odds ratios (OR) and 95% confidence intervals (CI) were used to evaluate the correlation. We observed that patients with the "G" allele of rs7708392 and the "C" allele of rs10036748 showed an increased risk of gastric carcinoma (OR= 1.335, 95%CI: 1.021-1.745, P= 0.035; OR= 1.358, 95%CI: 1.039-1.774, P= 0.025, respectively). Conversely, the haplotype "CT" of TNIP1 (rs7708392-rs10036748) may act as a genetic protective factor for gastric carcinoma (adjusted OR= 0.731, 95%CI: 0.552-0.970, P= 0.030). Our results are the first to suggest that genetic variation in TNIP1 gene is associated with gastric carcinoma, though, this finding must be confirmed in other populations with larger sample size.
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Affiliation(s)
- Zhao Liu
- Department of General Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China.,Department of Surgery, Xi'an Chest Hospital, Xi'an TB&Thoracic Tumor Hospital, Xi'an 710100, China
| | - Yuting Shi
- Department of Medical Oncology, Graduate School of Inner Mongolia Medical University, Hohhot 010000, China
| | - Yuyan Na
- Department of Pediatric Orthopedics, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010030, China
| | - Qi Zhang
- Department of Medical, Xi'an Chest Hospital, Xi'an TB&Thoracic Tumor Hospital, Xi'an 710100, China
| | - Sizhe Cao
- Department of Medical, Xi'an Chest Hospital, Xi'an TB&Thoracic Tumor Hospital, Xi'an 710100, China
| | - Xianglong Duan
- Second Department of General Surgery, Shaanxi Province People's Hospital, Xi'an 710001, China
| | - Xiyang Zhang
- Department of Biochemistry, School of Life Sciences, Northwest University, Xi'an 710069, China
| | - Hua Yang
- Department of Biochemistry, School of Life Sciences, Northwest University, Xi'an 710069, China
| | - Tianbo Jin
- Department of Biochemistry, School of Life Sciences, Northwest University, Xi'an 710069, China
| | - Yiming Li
- Department of General Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China
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Yang YJ, Wu CT, Ou HY, Lin CH, Cheng HC, Chang WL, Chen WY, Yang HB, Lu CC, Sheu BS. Male non-insulin users with type 2 diabetes mellitus are predisposed to gastric corpus-predominant inflammation after H. pylori infection. J Biomed Sci 2017; 24:82. [PMID: 29082856 PMCID: PMC5662095 DOI: 10.1186/s12929-017-0389-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 10/22/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Both H. pylori infection and diabetes increase the risk of gastric cancer. This study investigated whether patients with type 2 diabetes mellitus (T2DM) and H. pylori infection had more severe corpus gastric inflammation and higher prevalence of precancerous lesions than non-diabetic controls. METHODS A total of 797 patients with type 2 diabetes mellitus were screened for H. pylori, of whom 264 had H. pylori infection. Of these patients, 129 received esophagogastroduodenoscopy to obtain topographic gastric specimens for gastric histology according to the modified Updated Sydney System, corpus-predominant gastritis index (CGI), Operative Link on Gastritis Assessment, and Operative Link on Gastric Intestinal Metaplasia Assessment. Non-diabetic dyspeptic patients who had H. pylori infection confirmed by esophagogastroduodenoscopy were enrolled as controls. RESULTS The male as well as total T2DM patients had higher acute/chronic inflammatory and lymphoid follicle scores in the corpus than non-diabetic controls (p < 0.05). In contrast, the female T2DM patients had higher chronic inflammatory scores in the antrum than the controls (p < 0.05). In T2DM patients, the males had significantly higher rates of CGI than the females (p < 0.05). Multivariate logistic regression analysis showed that male patients (odds ratio: 2.28, 95% confidence interval: 1.11-4.69, p = 0.025) and non-insulin users (odds ratio: 0.33, 95% confidence interval: 0.15-0.74, p = 0.007) were independent factors for the presence of CGI in the H. pylori-infected patients with type 2 diabetes mellitus. CONCLUSIONS Patients with type 2 diabetes mellitus and H. pylori infection had more severe corpus gastric inflammation than non-diabetic controls. Moreover, male gender and non-insulin users of T2DM patients were predisposed to have corpus-predominant gastritis after H. pylori infection. TRIAL REGISTRATION ClinicalTrial: NCT02466919 , retrospectively registered may 17, 2015.
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Affiliation(s)
- Yao-Jong Yang
- Departments of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institutes of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chung-Tai Wu
- Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institutes of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Horng-Yih Ou
- Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institutes of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chin-Han Lin
- Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institutes of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hsiu-Chi Cheng
- Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institutes of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wei-Lun Chang
- Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institutes of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wei-Ying Chen
- Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institutes of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hsiao-Bai Yang
- Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Pathology, Ton-Yen General Hospital, Hsin-Chu, County, Taiwan
| | - Cheng-Chan Lu
- Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Bor-Shyang Sheu
- Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institutes of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Internal Medicine, Tainan Hospital, Ministry of Health and Welfare, Tainan, Taiwan
- Department of Internal Medicine, National Cheng Kung University Hospital, 138 Sheng Li Road, Tainan, 70428 Taiwan
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Shao Y, Lu R, Yang Y, Xu Q, Wang B, Ye G. Antibiotic resistance of Helicobacter pylori to 16 antibiotics in clinical patients. J Clin Lab Anal 2017; 32:e22339. [PMID: 28984385 DOI: 10.1002/jcla.22339] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 09/19/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Resistance of Helicobacter pylori (H. pylori) to antibiotics is increasing worldwide. To determine the status of H. pylori resistance and its patterns in clinical patients, an investigation utilizing susceptibility testing for commonly used antibiotics was needed. METHODS Total of 2283 H. pylori strains were collected from 2013 to 2016. The resistance and its patterns of these strains were tested by agar dilution method. The resistance rate and minimal inhibition concentration (MIC) in different gender groups were also analyzed. RESULTS The overall resistance rates were as following: amoxicillin (1.58%), clarithromycin (22.73%), levofloxacin (24.75%), furazolidone (1.49%), doxycycline (9.20%), cefetamet (97.20%), ceftriaxone (49.60%), cefuroxime (25.20%), gentamicin (3.73%), azithromycin (85.60%), rifampicin (2.80%), metronidazole (92.53%), ornidazole (94.27%), tinidazole (87.20%), ciprofloxacin (43.20%), and moxifloxacin (38.53%). There were only 64.08% strains pan-susceptible to amoxicillin, clarithromycin, levofloxacin, and furazolidone, followed by mono resistance (23.17%), double resistance (11.13%), triple resistance (1.36%), and quadruple resistance (0.26%). Significant differences in the resistance rate and MIC were also observed in different gender groups. CONCLUSION Antibiotic resistance trends of H. pylori is increasing in clinical patients. With the increasing resistance, it is imperative to individualized therapy based on the results of drug susceptibility testing.
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Affiliation(s)
- Yongfu Shao
- Department of Gastroenterology, the Affiliated Hospital of Ningbo University School of Medicine, Ningbo, China
| | - Rongdan Lu
- Department of Gastroenterology, the Affiliated Hospital of Ningbo University School of Medicine, Ningbo, China.,Ningbo University School of Medicine, Ningbo, China
| | - Yunben Yang
- Ningbo University School of Medicine, Ningbo, China
| | - Qiancheng Xu
- Department of Gastroenterology, the Affiliated Hospital of Ningbo University School of Medicine, Ningbo, China.,Ningbo University School of Medicine, Ningbo, China
| | - Bojun Wang
- Department of Gastroenterology, the Affiliated Hospital of Ningbo University School of Medicine, Ningbo, China
| | - Guoliang Ye
- Department of Gastroenterology, the Affiliated Hospital of Ningbo University School of Medicine, Ningbo, China
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Zabala Torrres B, Lucero Y, Lagomarcino AJ, Orellana-Manzano A, George S, Torres JP, O'Ryan M. Review: Prevalence and dynamics of Helicobacter pylori infection during childhood. Helicobacter 2017. [PMID: 28643393 DOI: 10.1111/hel.12399] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Long-term persistent Helicobacter pylori infection has been associated with ulceropeptic disease and gastric cancer. Although H. pylori is predominantly acquired early in life, a clear understanding of infection dynamics during childhood has been obfuscated by the diversity of populations evaluated, study designs, and methods used. AIM Update understanding of true prevalence of H. pylori infection during childhood, based on a critical analysis of the literature published in the past 5 years. METHODS Comprehensive review and meta-analysis of original studies published from 2011 to 2016. RESULTS A MEDLINE® /PubMed® search on May 1, 2016, using the terms pylori and children, and subsequent exclusion, based on abstract review using predefined criteria, resulted in 261 citations. An Embase® search with the same criteria added an additional 8 citations. In healthy children, meta-analysis estimated an overall seroprevalence rate of 33% (95% CI: 27%-38%). Seven healthy cohort studies using noninvasive direct detection methods showed infection prevalence estimates ranging from 20% to 50% in children ≤5 and 38% to 79% in children >5 years. The probability of infection persistence after a first positive sample ranged from 49% to 95%. Model estimates of cross-sectional direct detection studies in asymptomatic children indicated a prevalence of 37% (95% CI: 30%-44%). Seroprevalence, but not direct detection rates increased with age; both decreased with increasing income. The model estimate based on cross-sectional studies in symptomatic children was 39% (95% CI: 35%-43%). CONCLUSIONS The prevalence of H. pylori infection varied widely in the studies included here; nevertheless, model estimates by detection type were similar, suggesting that overall, one-third of children worldwide are or have been infected. The few cohort and longitudinal studies available show variability, but most studies, show infection rates over 30%. Rather surprisingly, overall infection prevalence in symptomatic children was only slightly higher, around 40%. Studies including only one positive stool sample should be interpreted with caution as spontaneous clearance can occur.
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Affiliation(s)
- Beatriz Zabala Torrres
- Microbiology and Mycology Program, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Universidad de Aysén, Campus Rio Simpson, Coyhaique, Chile
| | - Yalda Lucero
- Department of Pediatrics, Faculty of Medicine, Hospital Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile
| | - Anne J Lagomarcino
- Microbiology and Mycology Program, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
| | - Andrea Orellana-Manzano
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ciencias de la Vida (FCV), Campus Gustavo Galindo Km. 30.5 Vía Perímetral, P. O. Box 09-01-5863, Guayaquil, Ecuador
| | - Sergio George
- Microbiology and Mycology Program, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
| | - Juan P Torres
- Department of Pediatrics, Faculty of Medicine, Hospital Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile
| | - Miguel O'Ryan
- Microbiology and Mycology Program, Faculty of Medicine, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile
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Yang YJ, Wu CT, Ou HY, Lin CH, Cheng HC, Chang WL, Chen WY, Yang HB, Lu CC, Sheu BS. Ten days of levofloxacin-containing concomitant therapy can achieve effective Helicobacter pylori eradication in patients with type 2 diabetes. Ann Med 2017; 49:479-486. [PMID: 28266875 DOI: 10.1080/07853890.2017.1294761] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND This study investigated whether levofloxacin-containing concomitant therapy can effectively eradicate Helicobacter pylori infection in patients with type 2 diabetes mellitus (T2DM). METHODS A total of 797 T2DM patients were screened for anti-H. pylori IgG antibodies, and the presence of H. pylori infection was confirmed by 13C-urea breath test. We prospectively randomized 114 of these patients to receive either 10 d of levofloxacin-concomitant therapy (n = 55) or sequential therapy (n = 59). Antimicrobial resistance of H. pylori isolates collected from the patients with T2DM (n = 109) and dyspeptic controls without DM (n = 110) was determined using the E-test. This study was approved by our Institutional Review Board (A-BR-103-021). RESULTS The H. pylori eradication rates with concomitant therapy were higher than sequential therapy in both intention-to-treat (96.4% versus 81.4%, p = 0.012) and per-protocol (100% versus 85.4%, p = 0.006) analysis. The adverse effects in both groups were similarly mild. In the patients who received sequential therapy, clarithromycin resistance was significantly associated with eradication failure (p = 0.02). There were no significant differences in the antibiotic-resistant rates to amoxicillin, clarithromycin, metronidazole, tetracycline, and levofloxacin between the patients with and without T2DM. CONCLUSIONS Ten days of levofloxacin-containing concomitant therapy is an effective and well-tolerated treatment to eradicate H. pylori infection for T2DM patients. Key messages Ten days of levofloxacin-containing concomitant therapy is well tolerated and superior to clarithromycin-containing sequential therapy for first-line H. pylori eradication in patients with type 2 diabetes. Clarithromycin resistance to H. pylori is the main factor associated with eradication failure in clarithromycin-containing sequential therapy in diabetic patients.
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Affiliation(s)
- Yao-Jong Yang
- a Departments of Pediatrics , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,b Institutes of Clinical Medicine, College of Medicine, National Cheng Kung University , Tainan , Taiwan
| | - Chung-Tai Wu
- b Institutes of Clinical Medicine, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,c Departments of Internal Medicine , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan
| | - Horng-Yih Ou
- b Institutes of Clinical Medicine, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,c Departments of Internal Medicine , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan
| | - Chin-Han Lin
- b Institutes of Clinical Medicine, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,c Departments of Internal Medicine , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan
| | - Hsiu-Chi Cheng
- b Institutes of Clinical Medicine, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,c Departments of Internal Medicine , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan
| | - Wei-Lun Chang
- b Institutes of Clinical Medicine, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,c Departments of Internal Medicine , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan
| | - Wei-Ying Chen
- b Institutes of Clinical Medicine, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,c Departments of Internal Medicine , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan
| | - Hsiao-Bai Yang
- d Departments of Pathology , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,e Department of Pathology , Ton-Yen General Hospital , Hsin-Chu County , Taiwan
| | - Cheng-Chan Lu
- d Departments of Pathology , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan
| | - Bor-Shyang Sheu
- b Institutes of Clinical Medicine, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,c Departments of Internal Medicine , National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan , Taiwan.,f Department of Internal Medicine , Tainan Hospital, Ministry of Health and Welfare , Tainan , Taiwan
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Paredes-Osses E, Sáez K, Sanhueza E, Hebel S, González C, Briceño C, García Cancino A. Association between cagA, vacAi, and dupA genes of Helicobacter pylori and gastroduodenal pathologies in Chilean patients. Folia Microbiol (Praha) 2017; 62:437-444. [PMID: 28283946 DOI: 10.1007/s12223-017-0514-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 03/03/2017] [Indexed: 12/16/2022]
Abstract
In addition to the already known cagA gene, novel genetic markers have been associated with Helicobacter pylori (H. pylori) virulence: the dupA and vacAi genes. These genes might play an important role as specific markers to determine the clinical outcome of the disease, especially the vacAi gene, which has been expected to be a good marker of severe pathologies like gastric adenocarcinoma. In the present study, the association of cagA, dupA, and vacAi genes with gastroduodenal pathologies in Chilean patients was studied. One hundred and thirty-two patients positive for H. pylori were divided into two groups-non-severe and severe gastric pathologies-and investigated for the presence of cagA, dupA, and vacAi H. pylori virulence genes by PCR. The cagA gene was detected in 20/132 patients (15.2%), the vacAi1 gene was detected in 54/132 patients (40.9%), the vacAi2 gene was detected in 26/132 patients (19.7%), and the dupA gene was detected in 50/132 (37.9%) patients. Logistic regression model analysis showed that the vacAi1 isoform gene in the infected strains and the severity of the diseases outcome were highly associated, causing severe gastric damage that may lead to gastric cancer (p < 0.0001; OR = 8.75; 95% CI 3.54-21.64). Conversely, cagA (p = 0.3507; OR = 1.62; 95% CI 0.59-4.45) and vacAi2 (p = 0.0114; OR = 3.09; 95% CI 1.26-7.60) genes were not associated with damage, while the dupA gene was associated significantly with non-severe clinical outcome (p = 0.0032; OR = 0.25; 95% CI 0.09-0.65). In addition, dupA gene exerts protection against severe gastric pathologies induced by vacAi1 by delaying the outcome of the disease by approximately 20 years.
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Affiliation(s)
- Esteban Paredes-Osses
- Laboratory of Bacterial Pathogenesis, Faculty of Biologics Sciences, University of Concepcion, P.O. Box 160-C, Concepcion, Chile
| | - Katia Sáez
- Department of Statistics, Faculty of Physics and Math's Sciences, University of Concepcion, Concepcion, Chile
| | - Enrique Sanhueza
- Laboratory of Bacterial Pathogenesis, Faculty of Biologics Sciences, University of Concepcion, P.O. Box 160-C, Concepcion, Chile
| | - Sonja Hebel
- Department of Microbiology, Faculty of Biologics Sciences, University of Concepcion, Concepcion, Chile
| | - Carlos González
- Department of Microbiology, Faculty of Biologics Sciences, University of Concepcion, Concepcion, Chile
| | - Carlos Briceño
- Department of Gastroenterology, Faculty of Medicine, University of Concepcion, Concepcion, Chile
| | - Apolinaria García Cancino
- Laboratory of Bacterial Pathogenesis, Faculty of Biologics Sciences, University of Concepcion, P.O. Box 160-C, Concepcion, Chile.
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Trindade LMDF, Menezes LBDO, de Souza Neta AM, Leite Rolemberg PC, Souza LD, Barreto IDDC, Meurer L. Prevalence of Helicobacter pylori Infection in Samples of Gastric Biopsies. Gastroenterology Res 2017; 10:33-41. [PMID: 28270875 PMCID: PMC5330691 DOI: 10.14740/gr785w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/06/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Helicobacter pylori (H. pylori) infection affects about 50% of the world population and its association with environmental factors and host properties is involved in gastric carcinogenesis. The study aimed to estimate the prevalence of H. pylori in samples of gastric mucosa biopsies, correlate the presence of the bacteria in the sample with the variables age, sex and origin, to identify the types of lesions found in patients with H. pylori, and to evaluate the association of the lesions with the region of the gastric mucosa. METHODS A cross-sectional, retrospective study was carried out in Aracaju, Sergipe, Brazil, from January 2013 to December 2015. A total of 45,206 gastric mucosal biopsies were obtained from patients submitted to upper gastrointestinal endoscopy. Of the reports evaluated, 12,909 met the inclusion criteria since they presented the patient's demographic data as well as the histopathological characteristics of gastric mucosal regions and positivity for H. pylori. Data were analyzed by IBM SPSS Statistic 20 and subjected to descriptive analyses (categorical variables) and inferential (Pearson's Qui-square and linear association tests) and multiple correspondence analyses. Significance level adopted 5%. RESULTS Of the total of 12,909 (28.6%) reports evaluated, 67% (8,647) came from urban areas and 64.5% (8,320) were female. The mean age (standard deviation (SD)) was 43 years, ranging from 8 to 100 years, prevailing between 21 and 60 years. Among the types of gastric mucosa analyzed, 95.5% (12,322) were of the antral mucosa. The absence of glandular atrophy, the mild infection intensity for H. pylori, the absence of metaplasia, the presence of foveolar hyperplasia and lymphoid follicles were statistically significant (P < 0.001) in this region. In the fundic region, the evidence of fibrinoleucocytic crust and lymphoid follicles was significant (P < 0.001). There was no evidence of associated ulcerated lesions or significant relationship with intestinal metaplasia in the antral mucosa, whereas the fundic mucosa had a strong association with lymphoid follicles. The prevalence of active H. pylori infection in this study was 30.93%. CONCLUSION Detection rate of H. pylori and its association with acute and chronic inflammation should be taken into account. The antral region has shown higher incidence and the presence of H. pylori was strongly associated with foveolar hyperplasia and lymphoid follicles.
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Affiliation(s)
| | | | | | | | - Lais Dantas Souza
- Department of Medicine, Tiradentes University, Aracaju 49032-490, Brazil
| | | | - Luise Meurer
- Department of Gastroenterology and Hepatology, Laboratory of Pathological Anatomy Dra. Monica Araujo (LAPMA), Aracaju 49015-230, Brazil
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Xu Q, Chen TJ, He CY, Sun LP, Liu JW, Yuan Y. MiR-27a rs895819 is involved in increased atrophic gastritis risk, improved gastric cancer prognosis and negative interaction with Helicobacter pylori. Sci Rep 2017; 7:41307. [PMID: 28150722 PMCID: PMC5288699 DOI: 10.1038/srep41307] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 12/19/2016] [Indexed: 12/15/2022] Open
Abstract
MiR-27a rs895819 is a loop-stem structure single nucleotide polymorphism affecting mature miR-27a function. In this study, we performed a comprehensive analysis about the association of rs895819 with gastric cancer risk and prognosis, atrophic gastritis risk, as well as the interactions with environmental factors. A total of 939 gastric cancer patients, 1,067 atrophic gastritis patients and 1,166 healthy controls were screened by direct sequencing and MALDI-TOF-MS. The association of rs895819 with clinical pathological parameters and prognostic survival in 357 gastric cancer patients was also been analyzed. The rs895819 variant genotype increased the risk for atrophic gastritis (1.58-fold) and gastric cancer (1.24-fold). While in stratified analysis, the risk effect was demonstrated more significantly in the female, age >60y, Helicobacter pylori (H. pylori) negative and non-drinker subgroups. Rs895819 and H. pylori showed an interaction effect for atrophic gastritis risk. In the survival analysis, the rs895819 AG heterozygosis was associated with better survival than the AA wild-type in the TNM stage I–II subgroup. In vitro study by overexpressing miR-27a, cells carrying polymorphic-type G allele expressed lower miR-27a than wild-type A allele. In conclusion, miR-27a rs895819 is implicated as a biomarker for gastric cancer and atrophic gastritis risk, and interacts with H. pylori in gastric carcinogenesis.
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Affiliation(s)
- Qian Xu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, China
| | - Tie-Jun Chen
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, China
| | - Cai-Yun He
- Department of Molecular Diagnostics, Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Li-Ping Sun
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, China
| | - Jing-Wei Liu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, China
| | - Yuan Yuan
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang 110001, China
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Kato M, Nishihara H, Hayashi H, Kimura T, Ishida Y, Wang L, Tsuda M, Tanino MA, Tanaka S. Clinicopathological evaluation of Sox10 expression in diffuse-type gastric adenocarcinoma. Med Oncol 2016; 34:8. [DOI: 10.1007/s12032-016-0865-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 12/02/2016] [Indexed: 12/25/2022]
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Zhang R, Peng X, Duan G, Shi Q, Chen S, Wang C, Fan Q, Xi Y. An engineered Lactococcus lactis strain exerts significant immune responses through efficient expression and delivery of Helicobacter pylori Lpp20 antigen. Biotechnol Lett 2016; 38:2169-2175. [PMID: 27646988 DOI: 10.1007/s10529-016-2209-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 08/31/2016] [Indexed: 12/26/2022]
Abstract
OBJECTIVES To produce and deliver Helicobacter pylori lipoprotein Lpp20 via using Lactococcus lactis with aim of developing an efficient way to use this protective antigen in vaccine formulation. RESULTS An engineered L. lactis strain carrying the lpp20 gene from H. pylori was constructed. The inducible expression of Lpp20 in L. lactis was detected as a 20 kDa intracellular protein by SDS-PAGE. Lpp20 constituted 10 % of the L. lactis cellular proteins. The expression product was highly immunoreactive, as demonstrated by western blot assays using mouse anti-H. pylori sera. Animal experimentation showed that oral vaccination with the engineered strain excited significantly elevated levels of serum Lpp20-specific IgG antibodies in BALB/c mice (P < 0.05). CONCLUSIONS This report presents the first efficient expression and delivery of whole Lpp20 protein to the immunization sites by using L. lactis, demonstrating an efficient utilization mode of Lpp20 in anti-H. pylori vaccination.
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Affiliation(s)
- Rongguang Zhang
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Dadao, Zhengzhou, 450001, China.,Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, China
| | - Xiaoyan Peng
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Dadao, Zhengzhou, 450001, China
| | - Guangcai Duan
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Dadao, Zhengzhou, 450001, China. .,Henan Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, China.
| | - Qingfeng Shi
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Dadao, Zhengzhou, 450001, China
| | - Shuaiyin Chen
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Dadao, Zhengzhou, 450001, China
| | - Chen Wang
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Dadao, Zhengzhou, 450001, China
| | - Qingtang Fan
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Dadao, Zhengzhou, 450001, China
| | - Yuanlin Xi
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Dadao, Zhengzhou, 450001, China
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