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Urrutia‐Baca VH, Paz‐Michel BA, Calderon‐Porras AN, Valle JAJ, Alvarez‐Fernández WJ, Mervitch‐Sigal N, Rodríguez‐León MA, De La Garza‐Ramos MA. Oral Hygiene With Neutral Electrolyzed Water and Systemic Therapy Increases Gastric Helicobacter pylori Eradication and Reduces Recurrence. Clin Exp Dent Res 2024; 10:e927. [PMID: 38973212 PMCID: PMC11228356 DOI: 10.1002/cre2.927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 05/31/2024] [Accepted: 06/15/2024] [Indexed: 07/09/2024] Open
Abstract
OBJECTIVES Helicobacter pylori gastric infection strongly correlates with gastric diseases such as chronic gastritis, functional dyspepsia, and complications such as peptic ulcers and gastric cancer. In developing countries, systemic therapies are not usually successful due to elevated antibiotic resistance. Additionally, oral H. pylori infection and periodontal disease correlate with gastric treatment failures. This study aimed to explore the effect of an integral therapy, comprising oral hygiene and concomitant systemic treatment, to increase the eradication of gastric infection and recurrences. MATERIALS AND METHODS A prospective, randomized, four-arm, parallel-group, open-label clinical trial was conducted to investigate the efficacy of integral therapy to eradicate gastric H. pylori infection and avoid recurrences in double-positive (real-time PCR oral and gastric infection) patients. Oral hygiene involved mouthwash with neutral electrolyzed water (NEW), with or without periodontal treatment. One hundred patients were equally distributed into four groups: NS, NS-PT, NEW, and NEW-PT. All patients had concomitant systemic therapy and additionally, the following oral treatments: mouthwash with normal saline (NS), periodontal treatment and mouthwash with normal saline (NS-PT), mouthwash with NEW (NEW), and periodontal treatment and mouthwash with NEW (NEW-PT). Gastric and oral infection and symptoms were evaluated one and four months after treatments. RESULTS Integral therapy with NEW-PT increased gastric eradication rates compared with NS or NS-PT (84%-96% vs. 20%-56%; p < 0.001). Even more, a protective effect of 81.2% (RR = 0.1877; 95% CI: 0.0658-0.5355; p = 0.0018) against recurrences and 76.6% (RR = 0.2439; 95% CI: 0.1380-0.4310; p < 0.001) against treatment failure (eradication of infection and associated symptoms) was observed in patients from the NEW and NEW-PT groups. CONCLUSIONS Implementation of oral hygiene and systemic treatment can increase the eradication of gastric infection, associated symptoms, and recurrences. NEW is recommended as an antiseptic mouthwash due to its efficacy and short- and long-term safety.
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Affiliation(s)
- Victor Hugo Urrutia‐Baca
- Facultad de Ciencias BiológicasUniversidad Autonoma de Nuevo LeonSan Nicolas de los GarzaNuevo LeonMexico
| | | | | | | | | | | | | | - Myriam Angelica De La Garza‐Ramos
- Facultad de Ciencias BiológicasUniversidad Autonoma de Nuevo LeonSan Nicolas de los GarzaNuevo LeonMexico
- Facultad de OdontologíaUniversidad Autonoma de Nuevo LeonMonterreyNuevo LeonMexico
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Farhad SZ, Karbalaeihasanesfahani A, Dadgar E, Nasiri K, Esfahaniani M, Nabi Afjadi M. The role of periodontitis in cancer development, with a focus on oral cancers. Mol Biol Rep 2024; 51:814. [PMID: 39008163 DOI: 10.1007/s11033-024-09737-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/18/2024] [Indexed: 07/16/2024]
Abstract
Periodontitis is a severe gum infection that begins as gingivitis and can lead to gum recession, bone loss, and tooth loss if left untreated. It is primarily caused by bacterial infection, which triggers inflammation and the formation of periodontal pockets. Notably, periodontitis is associated with systemic health issues and has been linked to heart disease, diabetes, respiratory diseases, adverse pregnancy outcomes, and cancers. Accordingly, the presence of chronic inflammation and immune system dysregulation in individuals with periodontitis significantly contributes to the initiation and progression of various cancers, particularly oral cancers. These processes promote genetic mutations, impair DNA repair mechanisms, and create a tumor-supportive environment. Moreover, the bacteria associated with periodontitis produce harmful byproducts and toxins that directly damage the DNA within oral cells, exacerbating cancer development. In addition, chronic inflammation not only stimulates cell proliferation but also inhibits apoptosis, causes DNA damage, and triggers the release of pro-inflammatory cytokines. Collectively, these factors play a crucial role in the progression of cancer in individuals affected by periodontitis. Further, specific viral and bacterial agents, such as hepatitis B and C viruses, human papillomavirus (HPV), Helicobacter pylori (H. pylori), and Porphyromonas gingivalis, contribute to cancer development through distinct mechanisms. Bacterial infections have systemic implications for cancer development, while viral infections provoke immune and inflammatory responses that can lead to genetic mutations. This review will elucidate the link between periodontitis and cancers, particularly oral cancers, exploring their underlying mechanisms to provide insights for future research and treatment advancements.
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Affiliation(s)
- Shirin Zahra Farhad
- Department of Periodontics, Faculty of Dentistry, Isfahan(Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | | | - Esmaeel Dadgar
- Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kamyar Nasiri
- Faculty of Dentistry, Islamic Azad University of Medical Sciences, Tehran, Iran
| | - Mahla Esfahaniani
- Faculty of Dentistry, Golestan University of Medical Sciences, Gorgan, Iran.
| | - Mohsen Nabi Afjadi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
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Yan K, Wang X, Han Y, Tian Y, Niu M, Dong X, Li X, Li H, Sun Y. Simultaneous Detection of Helicobacter pylori and Clarithromycin Resistance Mutations Using RAA-CRISPR/Cas13a Assay. Infect Drug Resist 2024; 17:3001-3010. [PMID: 39045109 PMCID: PMC11265216 DOI: 10.2147/idr.s462963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 06/26/2024] [Indexed: 07/25/2024] Open
Abstract
Background Infection caused by Helicobacter pylori (H. pylori) affects approximately 50% of the global population. It is a major pathogenic factor for chronic gastritis and gastric cancer. Besides, the resistance to antibiotics such as clarithromycin could reduce the eradication rate. Currently, there is an urgent need for a swift, easy to perform, and highly sensitive detection method for H. pylori and clarithromycin resistance. Methods We used FAM/Digoxin labeled primers to amplify specific H. pylori 23S rRNA fragments by Recombinase Aided Amplification (RAA), and resistance mutations were distinguished using CRISPR/Cas13a system combined with lateral flow strip. Twenty-eight saliva samples were analyzed using qPCR, gene sequencing and this method to evaluate the detection efficiency. Results We developed a simultaneous detection method for H. pylori and clarithromycin resistance mutations named sensitive H. pylori easy-read dual detection (SHIELD). The results showed both A2142G and A2143G mutant DNAs causing clarithromycin resistance could be distinguished from the wild type with a concentration of 50 copies/μL, and no cross-reaction with other 5 common gastrointestinal bacteria was observed. For the detection of H. pylori in 28 saliva samples, the positive predictive value of this method was 100% (19/19) in comparison with qPCR. For detecting clarithromycin resistance, the positive predictive value of this method was 84.6% (11/13) compared with gene sequencing. Conclusion SHIELD assay showed high sensitivity and specificity in detecting H. pylori and clarithromycin resistance mutations. It could be a potential measure in the rapid detection of H. pylori, large-scale screening and guiding clinical medication.
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Affiliation(s)
- Kuocheng Yan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, People’s Republic of China
| | - Xiaohui Wang
- Department of Gastroenterology, the Sixth Medical Center of Chinese People’s Liberation Army General Hospital, Beijing, 100080, People’s Republic of China
| | - Yao Han
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, People’s Republic of China
| | - Yuan Tian
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, People’s Republic of China
| | - Mengwei Niu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, People’s Republic of China
| | - Xue Dong
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, People’s Republic of China
| | - Xiaowei Li
- Department of Gastroenterology, the Sixth Medical Center of Chinese People’s Liberation Army General Hospital, Beijing, 100080, People’s Republic of China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, People’s Republic of China
| | - Yansong Sun
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, People’s Republic of China
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Hałasa R, Turecka K, Mizerska U, Krauze-Baranowska M. Anti- Helicobacter pylori Biofilm Extracts from Rubus idaeus and Rubus occidentalis. Pharmaceutics 2024; 16:501. [PMID: 38675162 PMCID: PMC11054215 DOI: 10.3390/pharmaceutics16040501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 04/28/2024] Open
Abstract
Helicobacter pylori infections are still an important health problem and are directly related to the development of gastric ulcer, gastric adenocarcinoma, mucosal lymphoid tissue lymphoma, and diabetes. At the same time, the number of substances/drugs effective against these bacteria is limited due to increasing resistance. Raw plant materials from various species of the Rubus genus-fruits and shoots-have shown antimicrobial activity in numerous studies against different bacteria, including H. pylori in a planktonic form. Research carried out on a model using fragments of intravenous infusions and triphenyl tetrazolium chloride (TTC) as a dye showed that the shoot extract of Rubus idaeus 'Willamette', the fruit extract of R. idaeus 'Poranna Rosa', R. idaeus and R. idaeus 'Laszka', and R. occidentalis Litacz' prevent the formation of biofilm by H. pylori. Active concentrations inhibiting biofilm formation were 6.65 mg/mL for shoots and 16.65 mg/mL for fruits. However, in the resulting biofilm, the extract from the shoots of R. idaeus 'Willamette' and the fruit of R. idaeus 'Poranna Rosa' at a concentration of 16.65 mg/mL was active against living bacteria, and the remaining extracts showed such activity at a concentration of 33.3 mg/mL. In studies on the interaction of the extract with antibiotics on biofilm, the extract from the shoots of R. idaeus 'Willamette' showed synergy with doxycycline and levofloxacin, additivity with amoxicillin and clarithromycin, and neutrality with metronidazole. H. pylori biofilm research was carried out in a newly elaborated research model-culture on fragments of intravenous infusions with the addition of TTC as a marker of living bacterial cells. The research results may constitute the basis for the development of new combination therapies for the treatment of H. pylori infections, including its resistant strains. The proposed new biofilm research model, which is cheap and effective, may allow testing of new substances that are potentially more effective against H. pylori and other biofilm-forming bacterial strains.
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Affiliation(s)
- Rafał Hałasa
- Department of Pharmaceutical Microbiology, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416 Gdansk, Poland;
| | - Katarzyna Turecka
- Department of Pharmaceutical Microbiology, Medical University of Gdansk, Al. Gen. J. Hallera 107, 80-416 Gdansk, Poland;
| | - Urszula Mizerska
- Department of Polymeric Nanomaterials, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, ul. Sienkiewicza 112, 90-363 Lodz, Poland;
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Wang Y, Zhu J, Tang Y, Huang C. Association of periodontitis with gastrointestinal tract disorders: A bidirectional Mendelian randomization study. J Periodontol 2024. [PMID: 38563552 DOI: 10.1002/jper.23-0560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 12/02/2023] [Accepted: 01/24/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND The bidirectional link of periodontitis (PD) and gastrointestinal tract (GIT) disorders has been investigated in previous epidemiological studies; however, the conclusions still remain controversial. The aim of this study was to comprehensively explore the bidirectional causal effect between PD and various GIT diseases. METHODS Based on summary-level data of genome-wide association studies (GWASs), a two-sample bidirectional Mendelian randomization (MR) study was undertaken. Single-nucleotide polymorphisms (SNPs) associated with PD or GIT disorders (chronic gastritis [CG], gastric ulcer [GU], duodenal ulcer [DU], gastroesophageal reflux disease [GERD], irritable bowel syndrome [IBS], and diverticular disease of the intestine [DI]) in GWASs were applied as exposure. The primary method employed was the inverse-variance weighted (IVW) method, and several sensitivity analyses were performed to investigate potential pleiotropy. RESULTS With regard to the investigation of the causality between PD and GIT disorders, the IVW method revealed that there is a causal impact of PD on GU (odds ratio [OR] 1.088; 95% confidence interval [CI], 1.036-1.141; adjusted p = 0.004) and DI (OR 0.938; 95% CI, 0.911-0.965; adjusted p = 0.000). However, no significant genetic liability was observed for the causal effect of PD on CG, DU, GERD, and IBS. Furthermore, the primary analysis did not demonstrate a causal effect of GIT disorders on PD. CONCLUSION This MR study suggests that PD may be associated with an increased risk of GU and a reduced risk of DI, with possibly limited clinical relevance. Further studies are needed to support the conclusions of this MR study.
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Affiliation(s)
- Yuqiang Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, PR China
| | - Jiakang Zhu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, PR China
| | - Ying Tang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, PR China
| | - Cui Huang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei, PR China
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Yang T, Li J, Zhang Y, Deng Z, Cui G, Yuan J, Sun J, Wu X, Hua D, Xiang S, Chen Z. Intracellular presence of Helicobacter pylori antigen and genes within gastric and vaginal Candida. PLoS One 2024; 19:e0298442. [PMID: 38329956 PMCID: PMC10852334 DOI: 10.1371/journal.pone.0298442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 01/23/2024] [Indexed: 02/10/2024] Open
Abstract
BACKGROUND Helicobacter pylori infections are generally acquired during childhood and affect half of the global population, but its transmission route remains unclear. It is reported that H. pylori can be internalized into Candida, but more evidence is needed for the internalization of H. pylori in human gastrointestinal Candida and vaginal Candida. METHODS Candida was isolated from vaginal discharge and gastric mucosa biopsies. We PCR-amplified and sequenced H. pylori-specific genes from Candida genomic DNA. Using optical and immunofluorescence microscopy, we identified and observed bacteria-like bodies (BLBs) in Candida isolates and subcultures. Intracellular H. pylori antigen were detected by immunofluorescence using Fluorescein isothiocyanate (FITC)-labeled anti-H. pylori IgG antibodies. Urease activity in H. pylori internalized by Candida was detected by inoculating with urea-based Sabouraud dextrose agar, which changed the agar color from yellow to pink, indicating urease activity. RESULTS A total of 59 vaginal Candida and two gastric Candida strains were isolated from vaginal discharge and gastric mucosa. Twenty-three isolates were positive for H. pylori 16S rDNA, 12 were positive for cagA and 21 were positive for ureA. The BLBs could be observed in Candida cells, which were positive for H. pylori 16S rDNA, and were viable determined by the LIVE/DEAD BacLight Bacterial Viability kit. Fluorescein isothiocyanate (FITC)-conjugated antibodies could be reacted specifically with H. pylori antigen inside Candida cells by immunofluorescence. Finally, H. pylori-positive Candida remained positive for H. pylori 16S rDNA even after ten subcultures. Urease activity of H. pylori internalized by Candida was positive. CONCLUSION In the form of BLBs, H. pylori can internalize into gastric Candida and even vaginal Candida, which might have great significance in its transmission and pathogenicity.
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Affiliation(s)
- Tingxiu Yang
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Department of Hospital Infection and Management, Guizhou Provincial People’s Hospital, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education/Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Scientific Research Center, School of Basic Medical Science, Guizhou Medical University Guiyang, Guiyang, China
| | - Jia Li
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Department of Clinical Laboratory, Jinyang Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Yuanyuan Zhang
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Department of Gastroenterology, People’s Hospital of Qiannan Prefecture, Guizhou, China
| | - Zhaohui Deng
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Guzhen Cui
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education/Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Jun Yuan
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education/Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Jianchao Sun
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Xiaojuan Wu
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Scientific Research Center, School of Basic Medical Science, Guizhou Medical University Guiyang, Guiyang, China
| | - Dengxiong Hua
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Song Xiang
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Zhenghong Chen
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science/Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education/Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Scientific Research Center, School of Basic Medical Science, Guizhou Medical University Guiyang, Guiyang, China
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Li Y, Ouyang Y, He C. Research trends on the relationship between Helicobacter pylori and microbiota: A bibliometric analysis. Helicobacter 2023; 28:e13021. [PMID: 37697432 DOI: 10.1111/hel.13021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 07/27/2023] [Accepted: 08/29/2023] [Indexed: 09/13/2023]
Abstract
BACKGROUND Increasing evidence has indicated that Helicobacter pylori infection is associated with the complex microbiota in the digestive tract of the human body. We aimed to assess the research trends and hotspots in the field of H. pylori and microbiota using a quantitative method. MATERIALS AND METHODS The clinical studies on H. pylori and microbiota published from 2001 to 2022 were extracted from the Web of Science database. We visualized and analyzed countries/regions, institutions, authors, journals, and keywords through VOSviewer and CiteSpace software. The test techniques, specimen type, as well as microbiota variation after H. pylori infection and eradication were also evaluated. RESULTS A total of 98 publications were finally identified, and the number of annual papers increased gradually. China showed its dominant position in the publication outputs, and Nanchang University was the most productive institution. Cong He, Xu Shu, and Yin Zhu published the highest number of papers, whereas Helicobacter was the most productive journal. "Helicobacter pylori" ranked highest in the keyword occurrences. 16S rRNA gene sequencing was the most frequently used method for microbiota analysis. Fecal samples had the highest frequency of use, followed by gastric mucosa and saliva. H. pylori infection was associated with the alterations of microbiota through the digestive tract, characterized by the enrichment of Helicobacter in the stomach. Triple and quadruple therapy were the most utilized eradication regimens, and probiotics supplementation therapy has been proven to reduce side effects and restore microbial diversity. CONCLUSIONS This bibliometric analysis provides an overview of advancements in the field of H. pylori and microbiota. While numerous studies have been conducted on the correlation between H. pylori and the alterations of microbiota, future research is warranted to investigate the mechanisms underlying the interplay between H. pylori and other microbes in the development of related diseases.
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Affiliation(s)
- Yu Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- HuanKui Academy, Nanchang University, Nanchang, China
| | - Yaobin Ouyang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Cong He
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Shen J, Ye Z, Xie H, Ling D, Wu Y, Chen Y. The relationship between Helicobacter pylori infection and recurrent aphthous stomatitis: a systematic review and meta-analysis. Clin Oral Investig 2023; 27:6345-6356. [PMID: 37798535 DOI: 10.1007/s00784-023-05273-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 09/19/2023] [Indexed: 10/07/2023]
Abstract
OBJECTIVE This meta-analysis was designed to provide new insights into the relationship between Helicobacter pylori (H. pylori) infection and recurrent aphthous stomatitis (RAS). MATERIALS AND METHODS We included and evaluated studies on H. pylori infection and RAS from PubMed, EMBASE, Cochrane Library, and Web of Science databases published up to January 31, 2023. The characteristics of these studies were collected, and the quality was evaluated by Newcastle-Ottawa Scale (NOS). The random effects model was used to calculate the pooled odds ratio (OR) and 95% confidence interval (CI). To further explore the sources of heterogeneity, meta-regression analysis and subgroup analyses were performed. Funnel plot, Egger's test, and Begg's test were used to assess publication bias. RESULTS In total, fifteen case-control studies with 1137 individuals (601 cases and 536 controls) were included. The H. pylori was found to be significantly associated with RAS (OR: 1.83 95% CI: 1.41-2.37, P = 0.001). In the subgroup analyses, studies that used PCR (OR: 2.03 95% CI: 1.31-3.15) or UBT (OR: 1.83 95% CI: 1.13-2.96) yielded a significant positive association, while a non-significant association (OR: 1.12 95% CI: 0.61-2.08) was found from studies that used ELISA method. Sensitivity analyses showed that the results were robust. No significant publication bias was found. CONCLUSIONS The current evidence does not rule out an association between H. pylori and RAS. The effect of H. pylori on RAS varies in detection methods and sources of sample. Large samples, multiple clinical studies, and improved methods are still needed to determine the exact effect of H. pylori on RAS. CLINICAL SIGNIFICANCE H. pylori infection may be a risk factor for the pathogenesis of RAS.
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Affiliation(s)
- Jiayan Shen
- School of Stomatology, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310053, Zhejiang Province, China
| | - Zhenyan Ye
- School of Stomatology, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310053, Zhejiang Province, China
| | - Haohui Xie
- School of Stomatology, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310053, Zhejiang Province, China
| | - Danhua Ling
- Department of General Dentistry, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, Zhejiang Province, China
| | - Yue Wu
- School of Public Health, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310053, Zhejiang Province, China.
| | - Yun Chen
- School of Stomatology, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310053, Zhejiang Province, China.
- The Stomatology Hospital of Zhejiang Chinese Medicine University, Hangzhou, 310053, Zhejiang Province, China.
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Saeed MK, Al-Ofairi BA, Hassan MA, Al-Jahrani MA, Abdulkareem AM. The clinical significance of some serum tumor markers among chronic patients with Helicobacter pylori infections in Ibb Governorate, Yemen. Infect Agent Cancer 2023; 18:60. [PMID: 37828556 PMCID: PMC10571253 DOI: 10.1186/s13027-023-00542-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/02/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Helicobacter pylori (H. pylori) is a carcinogenic bacterium, it is the greatest risk factor for gastric cancer (GC), according to these evidences, there may be a certain association between chronic H. pylori infections and serum levels of tumor markers. This study was conducted to determine serum levels of some tumor markers, namely carcinoembryonic antigen (CEA), cancer antigen 19-9 (CA19-9) and cancer antigen 72-4 (CA72-4) in patients with chronic H. pylori infections and evaluate the association between serum tumor marker levels and chronic patients with H. pylori infections in Ibb Governorate, Yemen. SUBJECTS AND METHODS This study involved 200 patients who had been diagnosed with H. pylori infections using a serum immunochromatography antibody test. Stool and blood samples were collected from all patients to confirm the presence of H. pylori through detection of serum H. pylori IgG antibody and stool antigen test (SAT). Additionally, serum samples were analyzed to measurement the level of certain tumor markers CEA, CA19-9 and CA72-4. These tests were conducted at various Hospitals, Gastroenterology and Hepatology clinics in Ibb governorate, Yemen from October 2019 to November 2020. RESULTS The findings of current study showed that the prevalence of H. pylori infections by rapid anti H. pylori test were 200 (100%), 157 (78.5%) by serum H. pylori IgG antibody and 108 (54%) by SAT. In addition, the results showed that 42 (21%) of the patients had abnormal level of CEA, 30 (15%) had abnormal level of CA19-9 and 31 (15.5%) had abnormal level of CA72-4. Most importantly, the results indicated that the serum tumor marker levels CEA, CA19-9 and CA72-4 were correlated with the levels of serum H. pylori IgG antibody as well as positive results from the SAT (P < 0.05). Furthermore, the results indicated that serum tumor marker levels were associated with different infection status. Finally, the results indicated that the serum levels of tumor markers were associated with older ages, symptomatic patients and long duration of H. pylori infections (P < 0.05). CONCLUSION The findings of this study indicated that there is a significant association between chronic H. pylori infections and the serum levels of tumor markers (CEA, CA19-9 and CA72-4). This suggests that the patients with active chronic H. pylori infection may have an increased risk of developing GC. Therefore, monitoring and early detection of H. pylori infection and tumor markers levels in these patients may be crucial for identifying individuals at higher risk and implementing appropriate interventions.
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Affiliation(s)
- Marwan K Saeed
- Department of Biological Sciences, Microbiology Section, Faculty of Science, Sana'a University, Sana'a, Yemen.
- Department of Medical Laboratories, University of Science and Technology, Ibb, Yemen.
| | - B A Al-Ofairi
- Department of Biological Sciences, Microbiology Section, Faculty of Science, Sana'a University, Sana'a, Yemen
- Departement of Medical Laboratory, Faculty of Medical Sciences, Queen Arwa University, Sana'a, Yemen
| | - Mohammed A Hassan
- Pathology Department, Faculty of Medicine, Taiz University, Taiz, Yemen
| | - M A Al-Jahrani
- Department of Biological Sciences, Microbiology Section, Faculty of Science, Sana'a University, Sana'a, Yemen
| | - Ahmed M Abdulkareem
- Department of Biological Sciences, Microbiology Section, Faculty of Science, Sana'a University, Sana'a, Yemen
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10
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Chi W, Wang S, Liu T, Jiang W, Ding L, Miao Y, Yang F, Zhang J, Ji D, Xiao Z, Zhu H, Wu Y, Bao Z, Zhao H, Wang S. A rapid and high-throughput multiplex genetic detection assay for detection, semi-quantification and virulence genotyping of Helicobacter pylori in non-invasive oral samples. Front Cell Infect Microbiol 2023; 13:1267288. [PMID: 37842005 PMCID: PMC10570550 DOI: 10.3389/fcimb.2023.1267288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/11/2023] [Indexed: 10/17/2023] Open
Abstract
Aim This study established a high-throughput multiplex genetic detection assay (HMGA) for rapid identification, semi-quantification and virulence analysis of Helicobacter pylori directly from the clinical non-invasive oral samples. Methods The gastric mucosa and oral samples were collected from 242 patients in Shanghai from 2021 to 2022. All the samples were detected by routine clinical tests for H. pylori and Sanger sequenced for inconsistent results. A new multiplex PCR assay providing results within 4 hours was designed and optimized involving fluorescent dye-labeled specific primers targeted 16S rRNA gene, semi-quantitative gene ureC and 10 virulence genes of H. pylori. Semi-quantification was carried out by simulating the serial 10-fold dilutions of positive oral samples, and the H. pylori loads in different clinical samples were further compared. The mixed plasmids of virulence genes vacA s1, vacA m1 and vacA m2 were used to evaluate the performance on different genotypes. The consistency of 10 virulence genes in gastric mucosa, saliva, mouthwash and dental plaque of H. pylori-positive patients was compared. Results The non-invasive HMGA was highly specific for detection of all 12 targets of H. pylori and human internal reference gene β-globin, and the sensitivity to all target genes could reach 10 copies/μL. Compared with routine clinical tests and sequencing, non-invasive HMGA has a high level (>0.98) of sensitivity, specificity, accuracy, PPV, NPV and kappa coefficient for direct detection of H. pylori in oral samples. Moreover, by detecting peak area levels of ureC, it was confirmed that the H. pylori loads in gastric mucosa were significantly higher than those of the three kinds of oral samples (p<0.05). We also found that 45.0% (91/202) of patients had different H. pylori virulence genes in different oral samples. The concordance of positive detection rates of each virulence gene between saliva and gastric mucosa was more than 78% (p<0.05). Conclusion The non-invasive HMGA proved to be a reliable method for the rapid H. pylori identification, semi-quantification and detection of 10 virulence genes directly in oral samples, providing a new idea for non-invasive detection of H. pylori.
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Affiliation(s)
- Wenjing Chi
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Su Wang
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Tao Liu
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Wenrong Jiang
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Li Ding
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Yingxin Miao
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Feng Yang
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Jinghao Zhang
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Danian Ji
- Department of Endoscopy, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Zili Xiao
- Department of Endoscopy, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Haowei Zhu
- Department of Research and Development, Ningbo HEALTH Gene Technologies Co., Ltd, Ningbo, China
| | - Yong Wu
- Department of Research and Development, Ningbo HEALTH Gene Technologies Co., Ltd, Ningbo, China
| | - Zhijun Bao
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
- Department of Gerontology, Huadong Hospital Affiliated to Fudan University, Shanghai, China
| | - Hu Zhao
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
| | - Shiwen Wang
- Department of Laboratory Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai, China
- Research Center on Aging and Medicine, Fudan University, Shanghai, China
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Yang T, Zhang Y, Zhang H, Wu X, Sun J, Hua D, Pan K, Liu Q, Cui G, Chen Z. Intracellular presence and genetic relationship of Helicobacter pylori within neonates' fecal yeasts and their mothers' vaginal yeasts. Yeast 2023; 40:401-413. [PMID: 37565669 DOI: 10.1002/yea.3891] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/30/2023] [Accepted: 07/18/2023] [Indexed: 08/12/2023] Open
Abstract
Helicobacter pylori are transmissible from person to person and among family members. Mother-to-child transmission is the main intrafamilial route of H. pylori transmission. However, how it transmits from mother to child is still being determined. Vaginal yeast often transmits to neonates during delivery. Therefore, H. pylori hosted in yeast might follow the same transmission route. This study aimed to detect intracellular H. pylori in vaginal and fecal yeasts isolates and explore the role of yeast in H. pylori transmission. Yeast was isolated from the mothers' vaginal discharge and neonates' feces and identified by internal transcribed spacer (ITS) sequencing. H. pylori 16S rRNA and antigen were detected in yeast isolates by polymerase chain reaction and direct immunofluorescence assay. Genetic relationships of Candida strains isolated from seven mothers and their corresponding neonates were determined by random amplified polymorphic DNA (RAPD) fingerprinting and ITS alignment. The Candida isolates from four mother-neonate pairs had identical RAPD patterns and highly homologous ITS sequences. The current study showed H. pylori could be sheltered within yeast colonizing the vagina, and fecal yeast from neonates is genetically related to the vaginal yeast from their mothers. Thus, vaginal yeast presents a potential reservoir of H. pylori and plays a vital role in the transmission from mother to neonate.
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Affiliation(s)
- Tingxiu Yang
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou & Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education & Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
- Department of Hospital Infection and Management, Guizhou Provincial People's Hospital, Guiyang, China
| | - Yuanyuan Zhang
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou & Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Department of Gastroenterology, People's Hospital of Qiannan Prefecture, Guizhou, China
| | - Hua Zhang
- Department of Obstetrics, People's Hospital of Qiannan Prefecture, Guizhou, China
| | - Xiaojuan Wu
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou & Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Jianchao Sun
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou & Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Dengxiong Hua
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou & Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Ke Pan
- Department of Gastroenterology, People's Hospital of Qiannan Prefecture, Guizhou, China
| | - Qi Liu
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou & Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
| | - Guzhen Cui
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou & Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education & Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
| | - Zhenghong Chen
- Key Laboratory of Microbiology and Parasitology of Education Department of Guizhou & Joint Laboratory of Helicobacter Pylori and Intestinal Microecology of Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education & Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China
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Mikhail CRG, Abd El Maksoud Mohamed A, Shaker OG, El Desouky E, Shalaby RH. Frequency and risk factors of H. pylori infection among dental students: an observational cross-sectional study. Sci Rep 2023; 13:14264. [PMID: 37653065 PMCID: PMC10471685 DOI: 10.1038/s41598-023-41246-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023] Open
Abstract
Despite Helicobacter pylori infection remains asymptomatic in most people, it is associated with an increased risk of gastric cancer. Considering Egypt had the highest prevalence of H. pylori in healthy asymptomatic population in adults and pediatric age in past studies and currently salivary ELISA could be used for diagnosis of Oral H. pylori infection. Moreover, some researchers speculated that dentists and dental students might be at a higher risk for oral H. pylori infection because they are the most frequently exposed ones to saliva and dental plaque. This study aimed to determine risk factors associated with frequency of H. pylori among a sample of dental students for better management of the disease. 83 participants, with age (21-25 years), attending Faculty of Dentistry, Fayoum University were recruited. A structured questionnaire was used to collect information on sociodemographic parameters and risk factors for H. pylori. Direct inquiry about dyspeptic symptoms were done. Saliva samples were collected and tested for H. pylori antibodies. Overall seroprevalence was 22.9%. Participants in internship were more prone to be positive (p = 0.005). 32.6% of urban residents versus 10.8% of rural were H. pylori positive (p = 0.019). 75.0% of previous history of H. pylori infection versus 14.1% of those with no history were H. pylori positive p < 0.001. 70% of positive H. pylori participants reported positive clinical symptoms that were statistically significant. This study suggests that middle income, previous history of H. pylori and clinical symptoms of dyspepsia are risk factors of oral H. pylori with a decline in its prevalence in Egypt.
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Affiliation(s)
- Christine Raouf George Mikhail
- Oral Medicine and Diagnosis, Department of Oral Medicine, Diagnosis and Periodontology, Faculty of Dentistry, Fayoum University, Fayoum, Egypt.
| | | | - Olfat Gamil Shaker
- Medical Biochemistry and Molecular Biology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Eman El Desouky
- Epidemiology and Biostatistics, NCI, Cairo University, Cairo, Egypt
| | - Rania Hassan Shalaby
- Oral Medicine and Diagnosis, Department of Oral Medicine, Diagnosis and Periodontology, Faculty of Dentistry, Fayoum University, Fayoum, Egypt
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Strzelczyk JK, Świętek A, Hudy D, Gołąbek K, Gaździcka J, Miśkiewicz-Orczyk K, Ścierski W, Strzelczyk J, Misiołek M. Low Prevalence of HSV-1 and Helicobacter pylori in HNSCC and Chronic Tonsillitis Patients Compared to Healthy Individuals. Diagnostics (Basel) 2023; 13:diagnostics13101798. [PMID: 37238282 DOI: 10.3390/diagnostics13101798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/12/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Recent studies identified viral and bacterial factors, including HSV-1 and H. pylori, as possible factors associated with diseases such as chronic tonsillitis and cancers, including head and neck squamous cell carcinoma (HNSCC). We assessed the prevalence of HSV-1/2 and H. pylori in patients with HNSCC, chronic tonsillitis, and healthy individuals using PCR after DNA isolation. Associations were sought between the presence of HSV-1, H. pylori, and clinicopathological and demographic characteristics and stimulant use. HSV-1 and H. pylori were most frequently identified in controls (HSV-1: 12.5% and H. pylori: 6.3%). There were 7 (7.8%) and 8 (8.6%) patients with positive HSV-1 in HNSCC and chronic tonsillitis patients, respectively, while the prevalence of H. pylori was 0/90 (0%) and 3/93 (3.2%), respectively. More cases of HSV-1 were observed in older individuals in the control group. All positive HSV-1 cases in the HNSCC group were associated with advanced tumor stage (T3/T4). The prevalence of HSV-1 and H. pylori was highest in the controls compared to HNSCC and chronic tonsillitis patients, which indicates that the pathogens were not risk factors. However, since all positive HSV-1 cases in the HNSCC group were observed only in patients with advanced tumor stage, we suggested a possible link between HSV-1 and tumor progression. Further follow-up of the study groups is planned.
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Affiliation(s)
- Joanna Katarzyna Strzelczyk
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
| | - Agata Świętek
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
- Silesia LabMed Research and Implementation Center, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
| | - Dorota Hudy
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
| | - Karolina Gołąbek
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
| | - Jadwiga Gaździcka
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland
| | - Katarzyna Miśkiewicz-Orczyk
- Department of Otorhinolaryngology and Oncological Laryngology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 10 C Skłodowskiej St., 41-800 Zabrze, Poland
| | - Wojciech Ścierski
- Department of Otorhinolaryngology and Oncological Laryngology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 10 C Skłodowskiej St., 41-800 Zabrze, Poland
| | - Janusz Strzelczyk
- Department of Endocrinology and Neuroendocrine Tumors, Department of Pathophysiology and Endocrinology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 35 Ceglana St., 40-514 Katowice, Poland
| | - Maciej Misiołek
- Department of Otorhinolaryngology and Oncological Laryngology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 10 C Skłodowskiej St., 41-800 Zabrze, Poland
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14
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Jaradat H, Al-Hamry A, Ibbini M, Fourati N, Kanoun O. Novel Sensitive Electrochemical Immunosensor Development for the Selective Detection of HopQ H. pylori Bacteria Biomarker. BIOSENSORS 2023; 13:bios13050527. [PMID: 37232889 DOI: 10.3390/bios13050527] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/04/2023] [Accepted: 05/06/2023] [Indexed: 05/27/2023]
Abstract
Helicobacter pylori (H. pylori) is a highly contagious pathogenic bacterium that can cause gastrointestinal ulcers and may gradually lead to gastric cancer. H. pylori expresses the outer membrane HopQ protein at the earliest stages of infection. Therefore, HopQ is a highly reliable candidate as a biomarker for H. pylori detection in saliva samples. In this work, an H. pylori immunosensor is based on detecting HopQ as an H. pylori biomarker in saliva. The immunosensor was developed by surface modification of screen-printed carbon electrodes (SPCE) with MWCNT-COOH decorated with gold nanoparticles (AuNP) followed by HopQ capture antibody grafting on SPCE/MWCNT/AuNP surface using EDC/S-NHS chemistry. The sensor performance was investigated utilizing various methods, such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and scanning electron microscope (SEM) coupled with energy-dispersive X-ray spectroscopy (EDX). H. pylori detection performance in spiked saliva samples was evaluated by square wave voltammetry (SWV). The sensor is suitable for HopQ detection with excellent sensitivity and linearity in the 10 pg/mL-100 ng/mL range, with a 2.0 pg/mL limit of detection (LOD) and an 8.6 pg/mL limit of quantification (LOQ). The sensor was tested in saliva at 10 ng/mL, and recovery of 107.6% was obtained by SWV. From Hill's model, the dissociation constant Kd for HopQ/HopQ antibody interaction is estimated to be 4.60 × 10-10 mg/mL. The fabricated platform shows high selectivity, good stability, reproducibility, and cost-effectiveness for H. pylori early detection due to the proper choice of biomarker, the nanocomposite material utilization to boost the SPCE electrical performance, and the intrinsic selectivity of the antibody-antigen approach. Additionally, we provide insight into possible future aspects that researchers are recommended to focus on.
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Affiliation(s)
- Hussamaldeen Jaradat
- Measurement and Sensor Technology, Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Ammar Al-Hamry
- Measurement and Sensor Technology, Chemnitz University of Technology, 09126 Chemnitz, Germany
| | - Mohammed Ibbini
- Department of Biomedical Engineering, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Najla Fourati
- SATIE Laboratory, UMR CNRS 8029, Conservatoire National des Arts et Métiers, 75003 Paris, France
| | - Olfa Kanoun
- Measurement and Sensor Technology, Chemnitz University of Technology, 09126 Chemnitz, Germany
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Zhou M, Zeng Y, Xi Y, Luo S, Qi J, Zhao G, Sun Y, Guo Y, Cheng F. School-based Hygiene Intervention to Prevent HelicObacter Pylori infection among childrEn (SHIP HOPE): protocol for a cluster-randomised controlled trial. BMJ Open 2022; 12:e064207. [PMID: 36600426 PMCID: PMC9772681 DOI: 10.1136/bmjopen-2022-064207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Helicobacter pylori infection rates are high in China and worldwide, and maintaining good hygiene is effective in preventing H. pylori infection. Childhood is a critical stage for developing good hygiene practices. Therefore, in this study, we aimed to explore whether a comprehensive hygiene intervention can prevent H. pylori infection in primary schools in China. METHODS AND ANALYSIS The School-based Hygiene Intervention to Prevent HelicObacter Pylori infection among childrEn study is a cluster-randomised controlled trial, which will include approximately 2400 children in grades 2-4 from 60 classes in 10 primary schools of Linqu County, Shandong Province. Schools will be randomly assigned (1:1) via a computer-generated list, to receive either comprehensive hygiene intervention (intervention) or the usual health education lessons (control), with stratification by area (urban or rural). The interventions will include the following: (1) Children's education: lessons and cartoon books designed to provide basic knowledge about hygiene, H. pylori, hand hygiene, diet and oral hygiene will be provided to children; (2) Caregiver's education: children will be empowered to share hygiene-related knowledge with their caregivers as homework; caregivers will be also invited to the school for hygiene lessons; (3) School hygiene promotion: suggestions will be provided for improving the hygienic environment. Children in control schools will receive usual health education lessons according to the arrangements of each school. The primary outcome is the prevalence and incidence of H. pylori infection among children at 1-year follow-up. The secondary outcomes are H. pylori and hygiene knowledge, family eating customs and hygiene practices among children and their caregivers, as well as school absences owing to diarrhoea. Additionally, growth in children is set as an exploratory outcome. General linear mixed models will be used to analyse differences between the intervention and control schools. ETHICS AND DISSEMINATION Ethics approval has been obtained from the Institution Review Board of Tsinghua University (No: 20220020). Written informed consent will be obtained from each child and one of their caregivers. The findings of this study will be actively disseminated through scientific publications and conference presentations. TRIAL REGISTRATION NUMBER ChiCTR2200056191.
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Affiliation(s)
- Mengge Zhou
- Vanke School of Public Health, Tsinghua University, Beijing, People's Republic of China
- Institute for Healthy China, Tsinghua University, Beijing, People's Republic of China
- Department of Epidemiology and Biostatistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing, People's Republic of China
| | - Yuhong Zeng
- Department of Epidemiology, College of Preventive Medicine, Army Medical University, Chongqing, People's Republic of China
| | - Yu'e Xi
- Vanke School of Public Health, Tsinghua University, Beijing, People's Republic of China
- Institute for Healthy China, Tsinghua University, Beijing, People's Republic of China
| | - Sitong Luo
- Vanke School of Public Health, Tsinghua University, Beijing, People's Republic of China
- Institute for Healthy China, Tsinghua University, Beijing, People's Republic of China
| | - Jing Qi
- School of Management, Weifang Medical University, Weifang, Shandong, People's Republic of China
| | - Guanqi Zhao
- Center for Coronary Artery Disease, Capital Medical University Affiliated Anzhen Hospital, Beijing, People's Republic of China
| | - Yamei Sun
- Department of Gastroenterology, Capital Medical University Affiliated Anzhen Hospital, Beijing, People's Republic of China
| | - Yang Guo
- Department of Dermatology, Institute of Dermatology, Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, People's Republic of China
| | - Feng Cheng
- Vanke School of Public Health, Tsinghua University, Beijing, People's Republic of China
- Institute for Healthy China, Tsinghua University, Beijing, People's Republic of China
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16
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Zhang L, Chen X, Ren B, Zhou X, Cheng L. Helicobacter pylori in the Oral Cavity: Current Evidence and Potential Survival Strategies. Int J Mol Sci 2022; 23:ijms232113646. [PMID: 36362445 PMCID: PMC9657019 DOI: 10.3390/ijms232113646] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/03/2022] [Accepted: 11/05/2022] [Indexed: 11/11/2022] Open
Abstract
Helicobacter pylori (H. pylori) is transmitted primarily through the oral–oral route and fecal–oral route. The oral cavity had therefore been hypothesized as an extragastric reservoir of H. pylori, owing to the presence of H. pylori DNA and particular antigens in distinct niches of the oral cavity. This bacterium in the oral cavity may contribute to the progression of periodontitis and is associated with a variety of oral diseases, gastric eradication failure, and reinfection. However, the conditions in the oral cavity do not appear to be ideal for H. pylori survival, and little is known about its biological function in the oral cavity. It is critical to clarify the survival strategies of H. pylori to better comprehend the role and function of this bacterium in the oral cavity. In this review, we attempt to analyze the evidence indicating the existence of living oral H. pylori, as well as potential survival strategies, including the formation of a favorable microenvironment, the interaction between H. pylori and oral microorganisms, and the transition to a non-growing state. Further research on oral H. pylori is necessary to develop improved therapies for the prevention and treatment of H. pylori infection.
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Affiliation(s)
- Lin Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xi Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Biao Ren
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
| | - Lei Cheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
- Department of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu 610041, China
- Correspondence:
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17
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Hu Y, Xu X, Ouyang YB, He C, Li NS, Xie C, Peng C, Zhu ZH, Xie Y, Shu X, Lu NH, Zhu Y. Analysis of oral microbiota alterations induced by Helicobacter pylori infection and vonoprazan-amoxicillin dual therapy for Helicobacter pylori eradication. Helicobacter 2022; 27:e12923. [PMID: 36036087 DOI: 10.1111/hel.12923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/22/2022] [Accepted: 07/27/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND The oral cavity is considered a potential reservoir of Helicobacter pylori (H. pylori), and the imbalance of oral microbiota directly reflects the health of the host. We aimed to explore the relationship among oral microbiota, H. pylori infection, and vonoprazan-amoxicillin (VA) dual therapy for H. pylori eradication. METHODS Helicobacter pylori-positive patients were randomized into low- or high-dose VA dual therapy (i.e., amoxicillin 1 g b.i.d. or t.i.d. and vonoprazan 20 mg b.i.d) for 7 or 10 days. H. pylori-negative patients served as normal controls. Saliva samples were collected from 41 H. pylori-positive patients and 13 H. pylori-negative patients. The oral microbiota was analyzed by 16S rRNA gene sequencing, followed by bioinformatics analysis. RESULTS Helicobacter pylori-positive patients had higher richness and diversity and better evenness of oral microbiota than normal controls. Beta diversity analysis estimated by Bray-Curtis or weighted UniFrac showed distinct clustering between H. pylori-positive patients and normal controls. The number of bacterial interactions was reduced in H. pylori-positive patients compared with that in negative patients. Forty-one patients evaluated before and after successful H. pylori eradication were divided into low (L-VA) and high dose (H-VA) amoxicillin dose groups. The alpha and beta diversity of the oral microbiota between L-VA and H-VA patients exhibited no differences at the three time points (before eradication, after eradication, and at confirmation of H. pylori infection cure). CONCLUSION Helicobacter pylori infection could alter the diversity, composition, and bacterial interactions of the oral microbiota. Both L-VA and H-VA dual therapy showed minimal influence on the oral microbiota.
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Affiliation(s)
- Yi Hu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Xin Xu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Yao-Bin Ouyang
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Cong He
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Nian-Shuang Li
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Chuan Xie
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Chao Peng
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Zhen-Hua Zhu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Yong Xie
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Xu Shu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Nong-Hua Lu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
| | - Yin Zhu
- Department Of Gastroenterology, Digestive Disease Hospital, The First Affiliated Hospital of Nanchang University, Nanchang, China.,JiangXi Clinical Research Center for Gastroenterology, Nanchang, China
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18
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Is Helicobacter pylori colonization associated with chronic tonsillitis? - A meta-analysis and systematic review. Am J Otolaryngol 2022; 43:103515. [PMID: 35687938 DOI: 10.1016/j.amjoto.2022.103515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/18/2022] [Accepted: 05/30/2022] [Indexed: 11/23/2022]
Abstract
PURPOSE The aim of this study was to investigate the correlation between Helicobacter pylori colonization of tonsillar tissue in chronic tonsillitis and in noninfectious hyperplastic tonsils. MATERIALS AND METHODS All included studies investigated the presence of Helicobacter pylori in tonsillar tissue removed for infectious or noninfectious factors. Included studies must have used an accepted method of testing for Helicobacter pylori. We pooled six eligible studies to perform a traditional meta-analysis. RESULTS Six studies were included, including 462 patients. Helicobacter pylori does have a significant role in chronic tonsillitis compared with noninfectious indications for tonsillectomy for children population. Detection methods had effects on results. CONCLUSION The positive rate of Helicobacter pylori in chronic tonsillitis group was significantly higher than that in simple noninfectious group for the pediatric population, but not for adults. We suspected that chronic tonsillitis is likely to be relevant to Helicobacter pylori.
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Chen H, Xie H, Shao D, Chen L, Chen S, Wang L, Han X. Oral Microbiota, a Potential Determinant for the Treatment Efficacy of Gastric Helicobacter pylori Eradication in Humans. Pol J Microbiol 2022; 71:227-239. [PMID: 35676833 PMCID: PMC9252142 DOI: 10.33073/pjm-2022-020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/22/2022] [Indexed: 12/04/2022] Open
Abstract
The oral cavity serves as another reservoir for gastric Helicobacter pylori and may contribute to the failure of gastric H. pylori eradication therapy. However, changes to the oral microbial composition after gastric H. pylori eradication therapy has not yet been identified. This study aims to dissect whether the oral microbiota is involved and which bacterium mediates the clinic failure in H. pylori eradication. In the present study, the oral microorganisms from patients who had received the gastric H. pylori eradication treatment were analyzed by a high-throughput 16S rRNA deep sequencing. We found that the β diversity and composition of oral microbiota were remarkably changed in the patients who had experienced successful gastric H. pylori eradication treatment (SE group) compared to the failure group (FE group). Significantly enriched families, including Prevotellaceae, Streptococcaceae, Caulobacteraceae, and Lactobacillaceae, were detected in the SE group. In contrast, the bacterial families, such as Weeksellaceae, Neisseriaceae, Peptostreptococcaceae, Spirochaetaceae, and Veillonellaceae, were abundantly expressed in the FE group. Five operational taxonomic units (OTUs) were positively correlated with DOB values, while two OTUs exhibited negative trends. These different enriched OTUs were extensively involved in the 20 metabolic pathways. These results suggest that a balanced environment in the oral microbiota contributes to H. pylori eradication and metabolic homeostasis in humans. Our data demonstrated that the changes in oral microbiota might contribute to the therapeutic effects of antibiotic therapy. Therefore, a different therapy on the detrimental oral microbiota will increase the therapeutic efficacy of antibiotics on H. pylori infection. ![]()
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Affiliation(s)
- Huixia Chen
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, China.,Jiangsu Key Laboratory of Oral Diseases, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.,Department of Orthodontics, Changzhou Traditional Chinese Medicine Hospital, Changzhou, China
| | - Hui Xie
- Department of Orthodontics, Changzhou Traditional Chinese Medicine Hospital, Changzhou, China
| | - Dong Shao
- The Third Affiliated Hospital of Soochow University, The First People's Hospital of Changzhou, Changzhou, China
| | - Liju Chen
- Department of Orthodontics, Changzhou Traditional Chinese Medicine Hospital, Changzhou, China
| | - Siyu Chen
- State Key Laboratory of Natural Medicines and School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Lin Wang
- Jiangsu Key Laboratory of Oral Diseases, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Xiao Han
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, China
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20
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Alkhaldi NK, Alghamdi WK, Alharbi MH, Almutairi AS, Alghamdi FT. The Association Between Oral Helicobacter pylori and Gastric Complications: A Comprehensive Review. Cureus 2022; 14:e24703. [PMID: 35663643 PMCID: PMC9162906 DOI: 10.7759/cureus.24703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2022] [Indexed: 12/13/2022] Open
Abstract
Helicobacter pylori (H. pylori) is linked to chronic gastritis, duodenal or gastric ulcers, and gastric cancer (GC). Because the oral cavity is the first component of the gastrointestinal tract (GIT) and the entrance point for H. pylori, it has been proposed as a possible reservoir of H. pylori. As a result, a putative oral-oral transmission pathway of H. pylori poses the possibility of whether personal contact, such as kissing or sharing a meal, might trigger H. pylori transmission. As a result, several investigations have been done on this issue using various approaches for detecting H. pylori in oral and stomach samples. Furthermore, the relationship between H. pylori and gastrointestinal disorders has yet to be studied. The evidence for the association between H. pylori and gastric diseases and their complications is still a controversial subject due to the existing literature in this review. The goal of this comprehensive review was to collect all available published articles and critically evaluate existing investigations looking into the relationship between oral H. pylori contamination and the danger of gastric complications. Few studies indicated an association between H. pylori and gastric diseases. Furthermore, more longitudinal randomized clinical studies to further investigate the association between H. pylori and gastric diseases are warranted.
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Affiliation(s)
- Njoud K Alkhaldi
- General Medicine and Surgery, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, SAU
| | - Waad K Alghamdi
- General Medicine and Surgery, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, SAU
| | - Maryam H Alharbi
- General Medicine and Surgery, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, SAU
| | - Albandri S Almutairi
- General Medicine and Surgery, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, SAU
| | - Faisal T Alghamdi
- Department of Oral Biology, Faculty of Dentistry, King Abdulaziz University, Jeddah, SAU
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21
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Sulo P, Šipková B. DNA diagnostics for reliable and universal identification of Helicobacter pylori. World J Gastroenterol 2021; 27:7100-7112. [PMID: 34887630 PMCID: PMC8613642 DOI: 10.3748/wjg.v27.i41.7100] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 07/11/2021] [Accepted: 09/19/2021] [Indexed: 02/06/2023] Open
Abstract
Reliable diagnostics are a major challenge for the detection and treatment of Helicobacter pylori (H. pylori) infection. Currently at the forefront are non-invasive urea breath test (UBT) and stool antigen test (SAT). Polymerase chain reaction (PCR) is not endorsed due to nonspecific primers and the threat of false-positives. The specificity of DNA amplification can be achieved by nested PCR (NPCR), which involves two rounds of PCR. If the primers are properly designed for the variable regions of the 16S rRNA gene, it is not difficult to develop an NPCR assay for the unambiguous identification of H. pylori. Elaborate NPCR for a 454 bp amplicon was validated on 81 clinical biopsy, stool, and saliva samples, each from the same individuals, and compared with available H. pylori assays, namely histology, rapid urease test, SAT, and 13C-UBT. The assay was much more sensitive than simple PCR, and it was equally sensitive in biopsy samples as the 13C-UBT test, which is considered the gold standard. In addition, it is sufficiently specific because sequencing of the PCR products exclusively confirmed the presence of H. pylori-specific DNA. However, due to the threshold and lower abundance, the sensitivity was much lower in amplifications from stool or saliva. Reliable detection in saliva also complicates the ability of H. pylori to survive in the oral cavity aside from and independent of the stomach. The reason for the lower sensitivity in stool is DNA degradation; therefore, a new NPCR assay was developed to obtain a shorter 148 bp 16S rRNA amplicon. The assay was validated on stool samples from 208 gastroenterological patients and compared to SAT results. Surprisingly, this NPCR revealed the presence of H. pylori in twice the number of samples as SAT, indicating that many patients are misdiagnosed, not treated by antibiotics, and their problems are interpreted as chronic. Thus, it is unclear how to properly diagnose H. pylori in practice. In the first approach, SAT or UBT is sufficient. If samples are negative, the 148 bp amplicon NPCR assay should be performed. If problems persist, patients should not be considered negative, but due to threshold H. pylori abundance, they should be periodically tested. The advantage of NPCR over UBT is that it can be used universally, including questionable samples taken from patients with achlorhydria, receiving proton pump inhibitors, antibiotics, bismuth compound, intestinal metaplasia, or gastric ulcer bleeding.
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Affiliation(s)
- Pavol Sulo
- Department of Biochemistry, Comenius University, Bratislava 842 15, Slovakia
| | - Barbora Šipková
- Department of Biochemistry, Comenius University, Bratislava 842 15, Slovakia
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