KARACHI, Oct 28: Infection of the central nervous system by the common cold and other viruses may lead to memory loss late in life.

This was stated in a Mayo Clinic researchers report. “Our study suggests that virus-induced memory loss could accumulate over the lifetime of an individual and eventually lead to clinical cognitive memory deficits,” neuroscientist Charles L. Howe, corresponding study author of the Mayo group research said.

The study found that a nervous system infection linked to a pathogen called picorna-virus could have a permanent effect on memory. The findings are published in the latest online issue of the journal neurobiology of disease.

Picornaviruses are a family of common viruses that include rhinoviruses, associated with the common cold; enteroviruses, linked to respiratory and gastrointestinal ailments; encephalitis, involving inflammation of the brain; myocarditis (inflammation of the heart muscle); and meningitis.

“We think picornavirus family members cross into the brain and cause a variety of brain injuries,” Dr Charles Howe said.

It’s not clear just how much brain damage a picornavirus might cause in humans, but the evidence from this study indicated that it’s an area that warranted further research, the team said.

“Our findings suggest that picorna-virus infections throughout the lifetime of an individual may chip away at the cognitive reserve, increasing the likelihood of detectable cognitive impairments as the individual ages,” the study authors wrote.

“Further analysis of such deficits and exploration of potential therapeutic interventions are clearly needed,” the Mayo group said.—PPI