Oral Cavity as an Extragastric Reservoir of Helicobacter pylori

Background. Several studies were reported on the prevalence, and relationship between the existence of Helicobacter pylori (H. pylori) in oral cavity and in stomach of patients. The purpose of this study was to systematically review the existing literature on the presence of H. pylori in the oral cavity and its link to gastric infection, the existence of coinfection, and the impact of anti-H. pylori therapy on the dental plaque and vice versa. Method. Two authors independently searched the Medline, EMBASE, Cochrane Library, Web of Science, Google Scholar, and Scopus databases for relevant studies. The articles were analyzed critically and all qualified studies were included. The search was carried out by using a combined text and the MeSH search strategies: using the key words Helicobacter, Helicobacter pylori, and H. pylori in combination with dental plaque, periodontitis, and oral hygiene. Results. The data was presented in 8 tables and each topic separately discussed. Conclusion. Based on the systematic review of the available literature on H. pylori infection and its presence in the oral cavity, it can be concluded that dental plaque can act as a reservoir, and proper oral hygiene maintenance is essential to prevent reinfection. Due to the diversified methods and population groups involved in the available literature, no concrete evidence can be laid down. Further studies are necessary to establish the role of H. pylori in the oral cavity and its eradication on preventing the gastroduodenal infection.

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OralHelicobacter pylori: Can We Stomach It?

Critical Reviews in Oral Biology & Medicine ◽

10.1177/154411130301400307 ◽

2003 ◽

Vol 14 (3) ◽

pp. 226-233 ◽

Cited By ~ 61

Author(s):

S.A. Dowsett ◽

M.J. Kowolik

Keyword(s):

Helicobacter Pylori ◽

Oral Cavity ◽

Dental Plaque ◽

Human Stomach ◽

Future Research ◽

Gastric Disease ◽

Transmission Process ◽

Dental Profession ◽

H Pylori

Helicobacter pylori infection is one of the most common in man. The bacterium primarily resides in the human stomach, where it plays a significant role in gastric disease. If the spread of H. pylori is to be prevented, an understanding of the transmission process is essential. The oral cavity has been proposed as a reservoir for gastric H. pylori, which has been detected by culture and PCR in both dental plaque and saliva. This review will discuss the evidence for the role of the oral cavity in the transmission of gastric H. pylori. Moreover, the difficulties encountered in addressing this topic, possible directions for future research, and the implications for the dental profession are discussed.

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Helicobacter pylori colonization and oral health in children

Romanian Journal of Medical Practice ◽

10.37897/rjmp.2017.1.8 ◽

2017 ◽

Vol 12 (2) ◽

pp. 41-44

Author(s):

Vasile Valeriu LUPU ◽

◽

Gabriela PĂDURARU ◽

Anca ADAM ◽

Ana-Maria DĂBULEANU ◽

...

Keyword(s):

Helicobacter Pylori ◽

Oral Health ◽

Gastric Mucosa ◽

Oral Cavity ◽

Gold Standard ◽

Dental Plaque ◽

Negative Bacterium ◽

Gram Negative ◽

Standard Triple Therapy ◽

H Pylori

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

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Prevalence ofHelicobacter pylori vacAGenotypes andcagAGene in Dental Plaque of Asymptomatic Mexican Children

BioMed Research International ◽

10.1155/2017/4923640 ◽

2017 ◽

Vol 2017 ◽

pp. 1-10 ◽

Cited By ~ 2

Author(s):

Alejandra Mendoza-Cantú ◽

Víctor Hugo Urrutia-Baca ◽

Cynthia Sofía Urbina-Ríos ◽

Myriam Angélica De la Garza-Ramos ◽

Martha Elena García-Martínez ◽

...

Keyword(s):

Helicobacter Pylori ◽

Oral Cavity ◽

Dental Plaque ◽

Gastrointestinal Disease ◽

Oral Infection ◽

Rrna Gene ◽

Mexican Children ◽

Asymptomatic Children ◽

Dyspeptic Symptoms ◽

H Pylori

The variability inHelicobacter pylori vacAandcagAgenes has been related to the progression of the gastrointestinal disease; also the presence ofH. pyloriin the oral cavity has been associated with periodontal disease in adults, but, in children without dyspeptic symptoms, little is known about this. We evaluated the prevalence ofH. pyloriand the presence ofvacA/cagAgenotypes in the oral cavity of Mexican children without dyspeptic symptoms. The gingival status was measured, and dental plaque samples (n=100) were taken. 38% of children were positive forH. pylori16S rRNA gene by qPCR. A significant association betweenH. pylorioral infection and gingival status was observed (P<0.001). In 34.6% (9/26) of mild gingivitis cases,s1m2genotype was found, whiles1m1was typed in 50% (3/6) of moderate gingivitis. ThecagAprevalence amongH. pylori-positive children was 80.8% (21/26), 83.3% (5/6), and 16.7% (1/6) of cases of mild gingivitis, moderate gingivitis, and nongingivitis, respectively (P<0.001). Thes1m1/cagA+ combinational genotype was the most detected in children with gingivitis. Our results suggest that the prevalence ofH. pyloriand detection ofvacA/cagAgenotypes-associated gastrointestinal disease in the oral cavity could be related to the progression of gingivitis in asymptomatic children.

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The influence of Helicobacter pylori eradication therapy on the presence of H. pylori antigens in dental plaque and saliva

Progress in Health Sciences ◽

10.5604/01.3001.0009.5016 ◽

2016 ◽

Vol 6 (1) ◽

pp. 19-24

Author(s):

DB. Namiot ◽

K. Leszczyńska ◽

A. Namiot ◽

A. Kemona ◽

R. Bucki ◽

...

Keyword(s):

Helicobacter Pylori ◽

Oral Cavity ◽

Dental Plaque ◽

Eradication Therapy ◽

Oral Infection ◽

Helicobacter Pylori Eradication ◽

Immunological Method ◽

H Pylori ◽

Helicobacter Pylori Eradication Therapy

Purpose: The aim of this study was to evaluate the presence of H. pylori antigens in the oral cavity (dental plaque and saliva) of patients undergoing systemic eradication therapy. Materials and methods: The study was conducted in 49 subjects with H. pylori stomach infection. H. pylori antigens in dental plaque and saliva were evaluated with immunological method. Results: In subjects with initial H. pylori oral infection, the presence of H. pylori antigens in the oral cavity 6 weeks after successful or unsuccessful H. pylori eradication therapy in the stomach was 47.0% and 50.0%, respectively. In subjects without initial oral infection with H. pylori, the presence of H. pylori antigens in the oral cavity 6 weeks after successful and unsuccessful eradication therapy in the stomach was 30.0% and 20.0%, respectively. Conclusions: The immunological method detecting H. pylori antigens in the dental plaque and saliva cannot be recommended to evaluate the efficacy of H. pylori eradication in the oral cavity.

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A higiene bucal de bebês edêntulos e sua influência na microbiota bucal: os profissionais de saúde devem preconizá-la? – revisão crítica

Revista da Faculdade de Odontologia de Porto Alegre ◽

10.22456/2177-0018.101674 ◽

2021 ◽

Vol 62 (1) ◽

pp. 108-120

Author(s):

Dalila Miranda de Jesus ◽

Lilian Lopes Barbosa ◽

Thais Manzano Parisotto ◽

Rogério Lacerda dos Santos ◽

Hugo Lemes Carlo ◽

...

Keyword(s):

Systematic Review ◽

Oral Cavity ◽

Oral Hygiene ◽

Health Professionals ◽

Clinical Studies ◽

Scientific Evidence ◽

Pediatric Dentistry ◽

Google Scholar ◽

Oral Microbiota

Introduction: The indication of oral hygiene in edentulous babies is still controversial among health professionals, being necessary the search of this recommendation and the standardization of information. Objective: To investigate critically the evidence related to the indication of oral hygiene for edentulous babies. Methods: The search for articles was performed in the PUBMED, LILACS and GOOGLE SCHOLAR databases, in order to assess the following question: "Can oral cavity hygiene of edentulous babies influence oral microbiota? A search in 8 books of Pediatric Dentistry was also performed. Results: 317 articles were found (167-PUBMED, 146-GOOGLE SCHOLAR and 4-LILACS). There were no primary studies that evaluated the effect of oral hygiene of edentulous infants on microbiota, which impair the conduction of a systematic review. Thus, it was included for this review six studies that investigated microorganisms in the oral cavity of edentulous infants and the role of salivary immunoglobulins. Among the textbooks evaluated, only 4 indicated the oral hygiene in edentulous infants. Conclusion: According to the data, there are no primary studies that assessed the effect of oral hygiene in the oral microbiota of edentulous babies. It is relevant to conduct clinical studies in order to obtain scientific evidence about the indication or no of the oral hygiene in edentulous babies.

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Oral microbiota and Helicobacter pylori in gastric carcinogenesis: what do we know and where next?

BMC Microbiology ◽

10.1186/s12866-021-02130-4 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Seyedeh Zahra Bakhti ◽

Saeid Latifi-Navid

Keyword(s):

Helicobacter Pylori ◽

Oral Cavity ◽

Precancerous Lesions ◽

Potential Method ◽

Oral Microbiota ◽

Bacterial Transmission ◽

Underlying Mechanisms ◽

H Pylori ◽

Prevention Methods

AbstractGastric cancer (GC) is one of the most common malignancies causing death worldwide, and Helicobacter pylori is a powerful inducer of precancerous lesions and GC. The oral microbiota is a complex ecosystem and is responsible for maintaining homeostasis, modulating the immune system, and resisting pathogens. It has been proposed that the gastric microbiota of oral origin is involved in the development and progression of GC. Nevertheless, the causal relationship between oral microbiota and GC and the role of H. pylori in this relationship is still controversial. This study was set to review the investigations done on oral microbiota and analyze various lines of evidence regarding the role of oral microbiota in GC, to date. Also, we discussed the interaction and relationship between H. pylori and oral microbiota in GC and the current understanding with regard to the underlying mechanisms of oral microbiota in carcinogenesis. More importantly, detecting the patterns of interaction between the oral cavity microbiota and H. pylori may render new clues for the diagnosis or screening of cancer. Integration of oral microbiota and H. pylori might manifest a potential method for the assessment of GC risk. Hence it needs to be specified the patterns of bacterial transmission from the oral cavity to the stomach and their interaction. Further evidence on the mechanisms underlying the oral microbiota communities and how they trigger GC may contribute to the identification of new prevention methods for GC. We may then modulate the oral microbiota by intervening with oral-gastric bacterial transmission or controlling certain bacteria in the oral cavity.

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Trigeminal neuralgia and genetics: A systematic review

Molecular Pain ◽

10.1177/17448069211016139 ◽

2021 ◽

Vol 17 ◽

pp. 174480692110161

Author(s):

Mari Aaroe Mannerak ◽

Aslan Lashkarivand ◽

Per Kristian Eide

Keyword(s):

Systematic Review ◽

Animal Models ◽

Trigeminal Neuralgia ◽

Animal Studies ◽

Genetic Factors ◽

Web Of Science ◽

Cochrane Library ◽

Trigeminal Pain ◽

Familial Form

Trigeminal neuralgia (TN) is a severe facial pain disease of unknown cause and unclear genetic background. To examine the existing knowledge about genetics in TN, we performed a systematic study asking about the prevalence of familial trigeminal neuralgia, and which genes that have been identified in human TN studies and in animal models of trigeminal pain. MedLine, Embase, Cochrane Library and Web of Science were searched from inception to January 2021. 71 studies were included in the systematic review. Currently, few studies provide information about the prevalence of familial TN; the available evidence indicates that about 1–2% of TN cases have the familial form. The available human studies propose the following genes to be possible contributors to development of TN: CACNA1A, CACNA1H, CACNA1F, KCNK1, TRAK1, SCN9A, SCN8A, SCN3A, SCN10A, SCN5A, NTRK1, GABRG1, MPZ gene, MAOA gene and SLC6A4. Their role in familial TN still needs to be addressed. The experimental animal studies suggest an emerging role of genetics in trigeminal pain, though the animal models may be more relevant for trigeminal neuropathic pain than TN per se. In summary, this systematic review suggests a more important role of genetic factors in TN pathogenesis than previously assumed.

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Patient prioritisation methods to shorten waiting times for elective surgery: a systematic review of how to improve access to surgery

10.1101/2021.02.18.21252033 ◽

2021 ◽

Author(s):

Dimuthu Rathnayake ◽

Mike Clarke ◽

Viraj Jayasinghe

Keyword(s):

Systematic Review ◽

Web Of Science ◽

Elective Surgery ◽

Waiting Times ◽

Healthcare Management ◽

Waiting List ◽

Cochrane Library ◽

Wide Range ◽

The Impact ◽

Patient Prioritisation

ABSTRACTBackgroundConcern about long waiting times for elective surgeries is not a recent phenomenon, but it has been heightened by the impact of the COVID-19 pandemic and its associated measures. One way to alleviate the problem might be to use prioritisation methods for patients on the waiting list and a wide range of research is available on such methods. However, significant variations and inconsistencies have been reported in prioritisation protocols from various specialties, institutions, and health systems. To bridge the evidence gap in existing literature, this comprehensive systematic review will synthesise global evidence on policy strategies with a unique insight to patient prioritisation methods to reduce waiting times for elective surgeries. This will provide evidence that might help with the tremendous burden of surgical disease that is now apparent in many countries because of operations that were delayed or cancelled due to the COVID-19 pandemic and inform policy for sustainable healthcare management systems.MethodsWe searched PubMed, EMBASE, SCOPUS, Web of Science, and the Cochrane Library, with our most recent searches in January 2020. Articles published after 2013 on major elective surgery lists of adult patients were eligible, but cancer and cancer-related surgeries were excluded. Both randomised and non-randomised studies were eligible and the quality of studies was assessed with ROBINS-I and CASP tools. We registered the review in PROSPERO (CRD42019158455) and reported it in accordance with the PRISMA statement.ResultsThe electronic search in five bibliographic databases yielded 7543 records (PubMed, EMBASE, SCOPUS, Web of Science, and Cochrane) and 17 eligible articles were identified in the screening. There were four quasi-experimental studies, 11 observational studies and two systematic reviews. These demonstrated moderate to low risk of bias in their research methods. Three studies tested generic approaches using common prioritisation systems for all elective surgeries in common. The other studies assessed specific prioritisation approaches for re-ordering the waiting list for a particular surgical specialty.ConclusionsExplicit prioritisation tools with a standardised scoring system based on clear evidence-based criteria are likely to reduce waiting times and improve equitable access to health care. Multiple attributes need to be considered in defining a fair prioritisation system to overcome limitations with local variations and discriminations. Collating evidence from a diverse body of research provides a single framework to improve the quality and efficiency of elective surgical care provision in a variety of health settings. Universal prioritisation tools with vertical and horizontal equity would help with re-ordering patients on waiting lists for elective surgery and reduce waiting times.

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Patient prioritisation methods to shorten waiting times for elective surgery: A systematic review of how to improve access to surgery

PLoS ONE ◽

10.1371/journal.pone.0256578 ◽

2021 ◽

Vol 16 (8) ◽

pp. e0256578

Author(s):

Dimuthu Rathnayake ◽

Mike Clarke ◽

Viraj Jayasinghe

Keyword(s):

Systematic Review ◽

Web Of Science ◽

Elective Surgery ◽

Waiting Times ◽

Healthcare Management ◽

Waiting List ◽

Cochrane Library ◽

Wide Range ◽

The Impact ◽

Patient Prioritisation

Background Concern about long waiting times for elective surgeries is not a recent phenomenon, but it has been heightened by the impact of the COVID-19 pandemic and its associated measures. One way to alleviate the problem might be to use prioritisation methods for patients on the waiting list and a wide range of research is available on such methods. However, significant variations and inconsistencies have been reported in prioritisation protocols from various specialties, institutions, and health systems. To bridge the evidence gap in existing literature, this comprehensive systematic review will synthesise global evidence on policy strategies with a unique insight to patient prioritisation methods to reduce waiting times for elective surgeries. This will provide evidence that might help with the tremendous burden of surgical disease that is now apparent in many countries because of operations that were delayed or cancelled due to the COVID-19 pandemic and inform policy for sustainable healthcare management systems. Methods We searched PubMed, EMBASE, SCOPUS, Web of Science, and the Cochrane Library, with our most recent searches in January 2020. Articles published after 2013 on major elective surgery lists of adult patients were eligible, but cancer and cancer-related surgeries were excluded. Both randomised and non-randomised studies were eligible and the quality of studies was assessed with ROBINS-I and CASP tools. We registered the review in PROSPERO (CRD42019158455) and reported it in accordance with the PRISMA statement. Results The electronic search in five bibliographic databases yielded 7543 records (PubMed, EMBASE, SCOPUS, Web of Science, and Cochrane) and 17 eligible articles were identified in the screening. There were four quasi-experimental studies, 11 observational studies and two systematic reviews. These demonstrated moderate to low risk of bias in their research methods. Three studies tested generic approaches using common prioritisation systems for all elective surgeries in common. The other studies assessed specific prioritisation approaches for re-ordering the waiting list for a particular surgical specialty. Conclusions Explicit prioritisation tools with a standardised scoring system based on clear evidence-based criteria are likely to reduce waiting times and improve equitable access to health care. Multiple attributes need to be considered in defining a fair prioritisation system to overcome limitations with local variations and discriminations. Collating evidence from a diverse body of research provides a single framework to improve the quality and efficiency of elective surgical care provision in a variety of health settings. Universal prioritisation tools with vertical and horizontal equity would help with re-ordering patients on waiting lists for elective surgery and reduce waiting times.

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Currently prescribed drugs in the UK that could upregulate or downregulate ACE2 in COVID-19 disease: a systematic review

BMJ Open ◽

10.1136/bmjopen-2020-040644 ◽

2020 ◽

Vol 10 (9) ◽

pp. e040644

Author(s):

Hajira Dambha-Miller ◽

Ali Albasri ◽

Sam Hodgson ◽

Christopher R Wilcox ◽

Shareen Khan ◽

...

Keyword(s):

Systematic Review ◽

Web Of Science ◽

Angiotensin Receptor Blockers ◽

Risk Of Bias ◽

Cochrane Library ◽

Channel Blockers ◽

Human Lungs ◽

The Uk ◽

The Cochrane Library ◽

The Impact

ObjectiveTo review evidence on routinely prescribed drugs in the UK that could upregulate or downregulate ACE2 and potentially affect COVID-19 disease.DesignSystematic review.Data sourceMEDLINE, EMBASE, CINAHL, the Cochrane Library and Web of Science.Study selectionAny design with animal or human models examining a currently prescribed UK drug compared with a control, placebo or sham group, and reporting an effect on ACE2 level, activity or gene expression.Data extraction and synthesisMEDLINE, EMBASE, CINAHL, the Cochrane Library, Web of Science and OpenGrey from inception to 1 April 2020. Methodological quality was assessed using the SYstematic Review Centre for Laboratory animal Experimentation (SYRCLE) risk-of-bias tool for animal studies and Cochrane risk-of-bias tool for human studies.ResultsWe screened 3360 titles and included 112 studies with 21 different drug classes identified as influencing ACE2 activity. Ten studies were in humans and one hundred and two were in animal models None examined ACE2 in human lungs. The most frequently examined drugs were angiotensin receptor blockers (ARBs) (n=55) and ACE inhibitors (ACE-I) (n=22). More studies reported upregulation than downregulation with ACE-I (n=22), ARBs (n=55), insulin (n=8), thiazolidinedione (n=7) aldosterone agonists (n=3), statins (n=5), oestrogens (n=5) calcium channel blockers (n=3) glucagon-like peptide 1 (GLP-1) agonists (n=2) and Non-steroidal anti-inflammatory drugs (NSAIDs) (n=2).ConclusionsThere is an abundance of the academic literature and media reports on the potential of drugs that could attenuate or exacerbate COVID-19 disease. This is leading to trials of repurposed drugs and uncertainty among patients and clinicians concerning continuation or cessation of prescribed medications. Our review indicates that the impact of currently prescribed drugs on ACE2 has been poorly studied in vivo, particularly in human lungs where the SARS-CoV-2 virus appears to enact its pathogenic effects. We found no convincing evidence to justify starting or stopping currently prescribed drugs to influence outcomes of COVID-19 disease.

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