Related topics: hiv · antibiotics · bacteria · immune system · virus

How host-cell enzymes combat the coronavirus

Host-cell enzymes called PARP12 and PARP14 are important for inhibiting mutant forms of a coronavirus, according to a study published May 16 in the open-access journal PLOS Pathogens by Stanley Perlman of the University of ...

Symbionts as lifesavers

When people fall ill from bacterial infection, the first priority is to treat the disease. But where do these pathogens come from, and how do they thrive in the environment before the infection occurs? An international team ...

Newly identified bacteria-killing protein needs vitamin A to work

People who have inadequate vitamin A in their diets are more susceptible to skin infection, yet how that vitamin affects skin immunity has been unclear. In a study published today, UT Southwestern researchers shed some light ...

Cranberry oligosaccharides might help prevent UTIs

Many people have heard that drinking cranberry juice can help prevent urinary tract infections (UTIs). Although clinical trials of this popular folk remedy have produced mixed results, some studies have shown that drinking ...

Major findings help understand bacteria's 'superglue'

The discovery, published today in Nature Communications by researchers from La Trobe University and the University of Queensland, provides details on how proteins in the outer membrane of bacteria—the bacteria's 'superglue'—are ...

Cell-killing proteins suppress listeria without killing cells

New North Carolina State University research shows that key proteins known for their ability to prevent viral infections by inducing cell death can also block certain bacterial infections without triggering the death of the ...

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Infection

An infection is the detrimental colonization of a host organism by a foreign species. In an infection, the infecting organism seeks to utilize the host's resources to multiply, usually at the expense of the host. The infecting organism, or pathogen, interferes with the normal functioning of the host and can lead to chronic wounds, gangrene, loss of an infected limb, and even death. The host's response to infection is inflammation. Colloquially, a pathogen is usually considered a microscopic organism though the definition is broader, including parasites, fungi, viruses, prions, and viroids. A symbiosis between parasite and host, whereby the relationship is beneficial for the former but detrimental to the latter, is characterised as parasitism. The branch of medicine that focuses on infections and pathogens is infectious disease. "When infection attacks the body, anti-infective drugs can help turn the tide of battle. Four types of anti-infective drugs exist: antibacterial, antiviral, antitubercular, and antifungal. A secondary infection is an infection that occurs during or following treatment of another already existing primary infection.

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