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Saliva Test Could Detect Cancer Early
21 Aug
Summary
- Oral microbes may reveal patterns linked to gastric and colorectal cancers.
- A mouth rinse test shows higher sensitivity than traditional stool tests.
- New research suggests saliva could replace invasive screening methods.
Scientists have discovered that microbes found in saliva could reveal patterns linked to two prevalent forms of cancer: gastric and colorectal. This groundbreaking research, published in Cell Host & Microbe, suggests that a simple mouth rinse could eventually serve as an alternative to traditional, more invasive screening methods like stool samples.
The study examined the relationship between oral and digestive system bacteria, developing a 'mouth-to-feces' (MF) index. This tool measures shared microbial variants and found significantly higher MF index scores in patients with gastric and colorectal cancer compared to healthy individuals. This pattern was specific to cancer and not observed in those with metabolic disorders.
Notably, oral samples collected via a mouth rinse showed higher sensitivity in detecting cancer-related information than fecal occult blood tests. The findings suggest a future screening tool could identify individuals requiring established diagnostic procedures. However, researchers emphasize that further validation in larger, non-cancerous populations is necessary before clinical application.
