Oral Microbiome Dysbiosis Linked to Upper GI Disorders and Precancerous Lesions

Oral Microbiome Dysbiosis Linked to Upper GI Disorders and Precancerous Lesions

The Oral Microbiome: A Potential Key to Understanding Upper Gastrointestinal Disorders

We’re learning more and more about the intricate link between what happens in our mouths and the health of our digestive system. recent research suggests that changes in the oral microbiome – the vast community of bacteria living in our mouths – could influence the progress of various upper gastrointestinal (UGI) disorders, even precancerous lesions.

This groundbreaking research, published in the *American journal of Gastroenterology*, sheds light on the engaging relationship between our oral health and digestive tract well-being.

## Unraveling the Connection: Oral Microbiome and UGI Disorders

Scientists are increasingly recognizing the potential role of the oral microbiome in influencing the development of gastrointestinal cancers. This realization has fueled efforts to identify specific microbial signatures that might serve as early warning signs of disease.

To delve deeper, researchers conducted a thorough study involving 388 adults who underwent upper endoscopy with biopsies for histopathological analysis. They assessed UGI symptoms experienced by participants and utilized advanced 16S ribosomal RNA sequencing to analyze the microbial diversity and composition of saliva,subgingival plaque (the area below the gum line),and buccal mucosa (the inner lining of the cheek) samples.

## Microbial Signatures: Clues to UGI Disorders

The study revealed a compelling association between saliva dysbiosis – an imbalance in the oral microbial community – and the presence of UGI disorders. This finding suggests that specific microbial compositions within our saliva might act as potential indicators of digestive tract health.

Bridging the Gap: Oral Health and Gastrointestinal Disorders

Recent groundbreaking research is illuminating a fascinating link between our oral and gut health.Dr. Alicia Hart, a leading microbiome specialist, is shedding light on how these seemingly separate ecosystems communicate and influence each other. While we’ve long recognized the importance of oral hygiene for oral health, Dr. HartS work is revealing its broader implications for our overall well-being, particularly our digestive system.

“My work primarily revolves around deciphering how these microbial communities influence each other and impact our overall health, notably our digestive system,” Dr. Hart explains.

Studies are revealing that imbalances, or dysbiosis, in the oral microbiome can be associated with a range of gastrointestinal issues. Researchers have found associations between oral bacteria and conditions such as:

  • Gastroesophageal reflux disease (GERD)
  • Symptomatic esophagitis
  • Barrett’s esophagus (BE) – a precancerous condition
  • Helicobacter pylori infection
  • Chemical reactive gastritis
  • Atrophic H pylori gastritis
  • Intestinal metaplasia – a precancerous change in the lining of the stomach

Interestingly, the specific types of bacteria implicated vary depending on the location within the oral cavity. For example, dysbiosis in the subgingival and buccal mucosa regions was more closely linked to BE and atrophic H pylori gastritis, while bacteria in saliva where associated with gastric atrophy and intestinal metaplasia.

Two bacterial genera, Prevotella and Fusobacterium, stand out as particularly noteworthy in the context of digestive disorders. These bacteria, found in saliva, appear to contribute to gastric atrophy and intestinal metaplasia, precancerous changes in the stomach lining.

In subgingival samples, Fretibacterium was considerably associated with BE, while Fusobacterium showed a strong link to both gastric atrophy and intestinal metaplasia.

These findings are revolutionizing the way we understand digestive health. “Our study for the first time suggests that microbiota in the subgingival and buccal regions may serve as more specific biomarkers for detecting precancerous lesions in asymptomatic patients, particularly for Barrett’s esophagus,” Dr. Hart explains. “Saliva might be more appropriate for monitoring any UGI disorders at the population level.”

This research opens exciting possibilities for personalized medicine.By identifying specific microbial imbalances, we may be able to develop targeted interventions to prevent and address gastrointestinal disorders. Probiotics and prebiotics are increasingly recognized as potential tools for restoring balance in the oral-gastric microbial axis.

Dr. Hart’s team is actively investigating various types of probiotics and prebiotics to determine their effectiveness in modulating the oral microbiome and impacting digestive health. While more research is needed, the future holds great promise for harnessing the power of the microbiome to improve our overall well-being.

The Surprising Link Between Your Mouth and Your Stomach

Our gut health is a hot topic these days, but did you know that what happens in your mouth can directly impact your stomach’s well-being? A groundbreaking study published in the American Journal of Gastroenterology has shed light on the intricate connection between our oral microbiome – the community of bacteria living in our mouths – and upper gastrointestinal (UGI) disorders.

“The oral cavity and the stomach aren’t isolated environments,” explains Dr. Hart, a leading researcher in this field. “They’re connected via the esophagus, and there’s a constant exchange of microorganisms between them. This dynamic relationship is what we call the ‘oral-gastric microbial axis’.” Imbalances in this axis can disrupt the delicate microbial ecosystem in both areas, potentially leading to a range of issues, including GERD, gastritis, and even precancerous lesions.

But what exactly throws this delicate balance off? Several factors can contribute to disruptions in the oral-gastric microbial axis.

“Tobacco use, alcohol consumption, poor oral hygiene, certain medications, and even aging can all play a role,” Dr. Hart reveals. “For instance, smoking can increase the number of harmful bacteria like Porphyromonas gingivalis in the mouth. When these bacteria are swallowed, they can reach the stomach and contribute to gastric disorders.”

This revelation has major implications for our approach to health. Dr. Hart emphasizes that maintaining a healthy oral microbiome is crucial for overall gastrointestinal well-being.”Regular dental checkups, good oral hygiene practices, and a balanced diet can help keep this balance in check,” he advises. “It’s also vital to be mindful of habits like smoking or excessive alcohol consumption, as they can significantly disrupt the oral-gastric microbial axis.”

The future of gut health research looks shining. Dr. Hart and his team are currently exploring the potential of targeted probiotics and prebiotics to restore balance in the oral-gastric microbial axis. They are also investigating whether specific oral bacterial profiles could serve as biomarkers for early detection of UGI disorders.

“It’s an exciting field with so much potential to improve people’s lives,” Dr. Hart concludes.

What are the specific oral bacteria linked to UGI disorders according to Dr. hart’s research?

Title: A meintalk Exclusive – Unraveling the Oral Microbiome’s Role in Upper Gastrointestinal Disorders with Dr.Alicia Hart

Archyde Reporter (AR): Today, we have the pleasure of welcoming Dr. Alicia Hart, a leading microbiome specialist and pioneer in unraveling the connection between oral health and gastrointestinal disorders. Welcome, Dr. Hart!

Dr. Alicia Hart (AH): Thank you, I’m delighted to be here.

AR: Your recent research published in the American Journal of Gastroenterology has shed light on the remarkable link between oral microbiome dysbiosis and upper gastrointestinal (UGI) disorders. Could you tell our readers more about this connection?

AH: Absolutely. The oral microbiome, the vast community of bacteria living in our mouths, isn’t just crucial for oral health. it turns out,it also plays a notable role in the health of our digestive system,particularly the upper gastrointestinal tract. our study found a compelling association between saliva dysbiosis and the presence of UGI disorders, suggesting that specific microbial compositions in our saliva could act as potential indicators of digestive tract health.

AR: That’s fascinating. Can you walk us through the methodology of your study? How did you arrive at these conclusions?

AH: We conducted a thorough study involving 388 adult participants who underwent upper endoscopy with biopsies. We assessed their UGI symptoms and used advanced 16S ribosomal RNA sequencing to analyse the microbial diversity and composition of saliva, subgingival plaque, and buccal mucosa samples. This allowed us to explore connections between different oral microbial communities and various UGI conditions.

AR: You mentioned that specific oral bacteria appear to be associated with certain UGI disorders. Can you tell us more about these correlations?

AH: Indeed. We found that certain bacteria, like Prevotella and Fusobacterium in saliva, seemed to contribute to gastric atrophy and intestinal metaplasia, wich are precancerous changes in the stomach lining. In subgingival samples, Fretibacterium was considerably associated with Barrett’s esophagus, while Fusobacterium showed a strong link to both gastric atrophy and intestinal metaplasia.

AR: These findings have significant implications for early detection and management of UGI disorders. How can they be applied in a practical sense?

AH: They certainly do.Our study suggests that microbiota in the subgingival and buccal regions may serve as more specific biomarkers for detecting precancerous lesions, particularly for Barrett’s esophagus, even in asymptomatic patients. Moreover, saliva might be more appropriate for monitoring UGI disorders at the population level. This opens up exciting possibilities for personalized medicine and population-wide screening.

AR: That’s truly groundbreaking. Before we wrap up, what advice would you give to individuals looking to maintain a healthy oral microbiome and, by extension, good gastrointestinal health?

AH: Maintaining good oral hygiene is key – brushing twice a day, flossing regularly, and visiting your dentist for regular check-ups. Also, consider your diet. Foods rich in fiber and beneficial bacteria, like probiotics, can help promote a healthy oral microbiome.And remember, it’s not just about what you eat, but also when you eat. Frequent snacking throughout the day can increase acid production, which isn’t good for your teeth or stomach.

AR: Wise words from a leading expert in the field. Thank you, Dr.Hart, for joining us today and sharing your insights on this captivating topic.

AH: My pleasure. It’s been a delight.

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