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Can the tongue microbiome help diagnose pancreatic cancer?

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Can the tongue microbiome help diagnose pancreatic cancer?

Pancreatic cancer is typically an aggressive form of the disease, with a fairly low 5-year survival rate. Diagnosing pancreatic cancer in its early stages could help people receive treatment more quickly, but what kind of test would work best?

doctor examining tongueThe specific bacterial abundance on a person's tongue may indicate the presence of pancreatic cancer.

The National Cancer Institute (NCI) report that approximately 1.6 percent of adults in the United States will receive a pancreatic cancerdiagnosis during their lifetime. 

They also estimate that there were 55,440 new cases of pancreatic cancer in the country in 2018 alone.

The NCI note that the 5-year survival rate for people who have undergone treatment for pancreatic cancer is 8.5 percent only.

This means that it is of utmost importance for researchers to find more effective treatments and better ways of identifying the presence of this form of cancer in its early stages.

Diagnosing pancreatic cancer early could help fast-track a person's access to adequate treatment and boost the likelihood of a positive outcome.

However, because this type of cancer has few symptoms in the beginning, it can go undiagnosed for a long time.

In a recent study, a team of researchers from Zhejiang University in Hangzhou, China has investigated how the human tongue microbiota could act as a diagnostic tool for pancreatic cancer.

The researchers' findings — which they report in the Journal of Oral Microbiology — point to telling differences in the bacterial populations on the tongues of healthy people versus those of people with early-stage pancreatic cancer.

Specific changes in oral bacteria

In this study, the researchers worked with 30 individuals who had already received a diagnosis of pancreatic cancer in its early stages, as well as 25 healthy individuals who acted as the control group.

All of the participants were aged between 45 and 65, they did not have other health problems (including oral health problems), and none had taken either antibiotics or any other class of drug for 3 months prior to the beginning of the study.

The scientists collected tongue coating samples from each participant, then used specialized gene sequencing techniques to analyze their bacterial abundance.

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Following this analysis, the team found that individuals with pancreatic cancer had vastly different tongue microbiota, compared with their healthy peers. Specifically, people with pancreatic cancer had low levels of Haemophilus and Porphyromonas bacteria, but high levels of Leptotrichia and Fusobacterium.

"Although further confirmatory studies are needed, our results add to the growing evidence of an association between disruptions to the microbiome and pancreatic cancer," notes the study's lead author, Dr. Lanjuan Li.

"If an association between the discriminatory bacteria and pancreatic cancer is confirmed in larger studies, this could potentially lead to the development of new microbiome-based early diagnostic or preventive tools for the disease," she adds.

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shubham raj jain28-12-18
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shubham raj jain28-12-18
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shubham raj jain28-12-18
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