HOME >> BIOLOGY >> NEWS
Cigarette smoke exacerbates alcohol's effects on defense against Streptococcus pneumoniae

  • Streptococcus pneumoniae is a bacterium that causes a number of infections, including pneumonia.
  • Alcoholics and cigarette smokers are particularly susceptible to pulmonary infections caused by S. pneumoniae.
  • New research has found that alcohol consumption alone can increase movement of S. pneumoniae toward the lungs, and that smoke exposure exacerbates alcohol's effects.

Streptococcus pneumoniae is a bacterium that can infect the upper respiratory tract and cause pneumonia, as well as infections in other parts of the body such as the bloodstream (bacteremia), lining of the brain and spinal cord (meningitis), bones (osteomyelitis), joints (arthritis), ears (otitis media) and sinuses (sinusitis). Alcoholics and cigarette smokers are particularly susceptible to pulmonary infections caused by S. pneumoniae. A rodent study in the May issue of Alcoholism: Clinical & Experimental Research has found that alcohol consumption increases movement of S. pneumoniae toward the lungs, and that smoke exposure exacerbates the alcohol-induced increase in bacterial penetration.

"All of the infections caused by S. pneumoniae start with the bacterium colonizing or binding to cells in the upper part of the nose, which is called the nasopharynx," said Gentry-Nielsen, professor of microbiology and immunology at Creighton University School of Medicine, research microbiologist at the Omaha Veterans Affairs Medical Center, and corresponding author for the study. "The trachea that leads from the nasopharynx to the lungs is lined with cells that have hair-like projections called cilia. These cilia beat in an upward direction to sweep mucus and microorganisms like S. pneumoniae upward and prevent their movement into the lungs. Disease normally occurs when the immune system is compromised or the person is colonized with a new or especially virulent strain of S. pneumoniae that
'"/>


15-May-2005


Page: 1 2 3 4

Related biology news :

1. Cigarette smoke alters DNA in sperm, genetic damage could pass to offspring
2. Cigarette smoke blocks cell repair mechanism, University of Florida study shows
3. Cigarette smoke reduces transport of hamster eggs
4. Cigarette smoking exacerbates alcohol-induced brain damage
5. Cigarette smoke a culprit in poor healing and increased scarring
6. Children of smokers have more than 5 times higher levels of a nicotine toxin
7. Study confirms the risk of exposure to secondhand tobacco smoke outdoors
8. Good vibrations from deep-sea smokers may keep fish out of hot water
9. Exercise can reduce a smokers lung cancer risk, but quitting smoking is still most important
10. Successful lung cancer surgery not enough to break nicotine dependence in many smokers
11. PET imaging shows young smokers quick benefit of quitting

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/18/2020)... ... 2020 , ... Commercial launch readiness is a critical stage in a product ... or vaccine, the global economic downturn will only increase price pressures overall for the ... capturing full value from every product launch is critical. However, history shows that only ...
(Date:7/2/2020)... ... July 02, 2020 , ... ... B.V. (MBS) has announced a publication detailing the use of its revolutionary ... polymerase chain reaction (RT-PCR) in 16 minutes. The article, titled "Ultra-fast one-step ...
(Date:6/25/2020)... ... June 24, 2020 , ... eClinical Solutions ... data services that accelerate drug development, is collaborating with Karyopharm Therapeutics (Nasdaq: ... hospitalized patients with severe COVID-19. This is the first study of an XPO1 ...
Breaking Biology News(10 mins):
(Date:7/10/2020)... BALTIMORE (PRWEB) , ... July ... ... Baltimore biotechnology company, announced today that Massachusetts Institute of Technology (MIT) has ... This broader license allows PathSensors to move into the point-of-care diagnostic market, ...
(Date:7/1/2020)... ... June 29, 2020 , ... ... date growth of 40% in 2020, despite many obstacles created as a result ... to increase revenue for its partnered medical practices and medical manufacturers by expanding ...
(Date:6/28/2020)... Conn. (PRWEB) , ... June 25, 2020 , ... ... formed to advance photodynamic therapy for treating cancer, today announced the company has ... York (“Roswell Park”). The agreement provides Lumeda globally exclusive rights to Roswell ...
(Date:6/23/2020)... (PRWEB) , ... June 22, 2020 , ... ... lead glutamine antagonist, DRP-104, will be presented June 22-24 during the American Association ... of DRP-104; and, the other profiles the potent, consistent single agent activity in ...
Breaking Biology Technology:
Cached News: