Medicine (category filter × )

Periodontitis Bacteria Love Colon and Dirt Microbes

rh.gatech.edu
  • Massive study shows that bacteria Aggregatibacter actinomycetemcomitans (Aa, cause of periodontitis) doesn’t cooperate well with other microbes in the mouth.
  • Instead, it cooperates with bacteria found in dirt or in the colon, even though it’s part of the mouth microbiome.
  • This shows that while microbes and bacteria evolve together, some may be dormant and unable to cooperate with their closest partners.
  • Researchers manipulated almost all 2,100 Aa genes, while pairing Aa with 25 other microbes.
  • The study continues, and could reveal whether smoking, poor hygiene, or diabetes can cause periodontitis by enabling Aa to attack gum tissue.

Risks of ischaemic heart disease and stroke in meat eaters, fish eaters, and vegetarians over 18 years of follow-up: results from the prospective EPIC-Oxford study

bmj.com
  • Analysis of data from 48,188 people shows that vegetarians and meat-eaters are at risk of different types of stroke.
  • Meat-eaters are at bigger risk of ischaemic stroke, which means a blockage of blood flow to the brain.
  • Vegetarians are at bigger risk of haemorrhagic stroke, meaning rupture of blood vessels in the brain.

How Serotonin And Prozac Affect The Gut’s Microbiota

sciencebeta.com
  • New proof found that antidepressants can modify the microbes in our gut.
  • Researchers found specific bacteria in mice that was more prominent when there was more serotonin in the gut.
  • Fluoxetine (Prozac) reduced the transport of serotonin into bacterial cells.
  • It shows a unique form of communication between bacteria and cells, based on serotonin which is traditionally recognized as a neurotransmitter.

Traditional and electronic cigarettes linked to poor sleep

eurekalert.org
  • Study of 1,664 students shows that smokers don’t sleep well - even when they don’t smoke daily.
  • E-cigarette users take even more sleep medications than traditional cigarette users.
  • Understanding how e-cigs influence sleep is important because it’s associated with numerous other health concerns.

A large case-control study on vaccination as risk factor for multiple sclerosis

n.neurology.org
  • Vaccinations linked to lower risk of being diagnosed with multiple sclerosis.
  • Based on German ambulatory claims data, researchers found that the lowest risk was related to vaccines against influenza and tick-borne encephalitis.
  • Whether the vaccine protects against MS is unclear, and needs further studying.

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