Oncology & Cancer

Esophageal cancer patients show abundance of oral pathogens

It is increasingly clear that the trillions of bacteria that make themselves at home in and on the human body are more than just casual observers along for the ride. Gut bacteria in particular have been shown to have an enormous ...

Diseases, Conditions, Syndromes

Self-collected saliva samples prove effective for diagnosing COVID-19

Researchers at Memorial Sloan Kettering Cancer Center (MSK) have found that SARS-CoV-2 genetic material can be reliably detected in self-collected saliva samples at a rate similar to that of nasopharyngeal and oropharyngeal ...

Diseases, Conditions, Syndromes

Belgian university trials saliva tests to track coronavirus spread

At the university of Liege in Belgium, a steady stream of students pick up saliva tests in white boxes from a desk at the entrance of the main building, a scheme creators hope will simplify tracking the spread of the coronavirus.

Diseases, Conditions, Syndromes

Saliva tests could detect the silent carriers of COVID-19

Scientists at Hokkaido University and colleagues in Japan have demonstrated a quick and effective mass testing approach using saliva samples to detect individuals who have been infected with COVID-19 but are still not showing ...

Diseases, Conditions, Syndromes

SalivaDirect: What you need to know about the new COVID-19 test

As businesses and schools tentatively reopen amid an ongoing pandemic, scientists at the Yale School of Public Health have developed a new method to determine whether someone has COVID-19. The method, known as SalivaDirect, ...

Diseases, Conditions, Syndromes

COVID-19 saliva test enables screening on a massive scale

A new saliva test to detect the SARS-CoV-2 virus has been developed by researchers at Washington University School of Medicine in St. Louis. Results from the COVID-19 diagnostic test are available in a few hours and, ideally, ...

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Saliva

Saliva (also referred to as spit , spittle or slobber) is the watery and usually frothy substance produced in the mouths of humans and most other animals. Saliva is produced in and secreted from the salivary glands. Human saliva is composed mostly of water, but also includes electrolytes, mucus, antibacterial compounds, and various enzymes. As part of the initial process of food digestion, the enzymes in the saliva break down some of the starch and fat in the food at the molecular level. Saliva also breaks down food caught in the teeth, protecting them from bacteria that cause decay. Furthermore, saliva lubricates and protects the teeth, the tongue, and the tender tissues inside the mouth. Saliva also plays an important role in tasting food by trapping thiols produced from odourless food compounds by anaerobic bacteria living in the mouth.

Various species have evolved special uses for saliva that go beyond predigestion. Some swifts use their gummy saliva to build their nests. Some Aerodramus swiftlet nests are made only from saliva and used to make bird's nest soup. Cobras, vipers, and certain other members of the venom clade hunt with venomous saliva injected by fangs. Some arthropods, such as spiders and caterpillars, create thread from salivary glands.

This text uses material from Wikipedia, licensed under CC BY-SA