Alzheimer's disease & dementia

Does herpes cause Alzheimer's?

What causes Alzheimer's disease? The answer could be right under our noses, says leading expert Professor Ruth Itzhaki. Her latest paper presents a lifetime of research evidence that the herpes virus responsible for cold ...

Alzheimer's disease & dementia

Could herpes virus help cause alzheimer's?

(HealthDay)—There's growing evidence that the herpes virus responsible for cold sores also may cause Alzheimer's disease, a new research paper contends.

Diseases, Conditions, Syndromes

Scientists find a new way to attack herpesviruses

Human cytomegalovirus is a leading cause of birth defects and transplant failures. As it's evolved over time, this virus from the herpes family has found a way to bypass the body's defense mechanisms that usually guards against ...

Alzheimer's disease & dementia

New study highlights Alzheimer's herpes link, experts say

A new commentary by scientists at the Universities of Manchester and Edinburgh on a study by Taiwanese epidemiologists supports the viability of a potential way to reduce the risk of Alzheimer's disease.

Diseases, Conditions, Syndromes

Researchers get to grips with a herpesvirus

Human herpesvirus 6 infects most people all over the world. It is usually well controlled by the body, but it can cause diseases in immunocompromised individuals. As reported in PLOS Pathogens, scientists at Helmholtz Zentrum ...

Diseases, Conditions, Syndromes

HSV-1 prevalence 47.8 percent in 14- to 49-year-olds

(HealthDay)—The prevalence of herpes simplex virus type 1 (HSV-1) and HSV-2 is 47.8 and 11.9 percent, respectively, for individuals aged 14 to 49 years, according to a February data brief published by the U.S. Centers for ...

Diseases, Conditions, Syndromes

Untangling how Epstein-Barr virus infects cells

A team led by scientists at Northwestern Medicine has discovered a new epithelial receptor for Epstein-Barr virus, according to a study published recently in Nature Microbiology.

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Herpes simplex virus

Herpes simplex virus 1 (HWJ-1) Herpes simplex virus 2 (HWJ-2)

Herpes simplex virus 1 and 2 (HSV-1 and HSV-2) are two species of the herpes virus family, Herpesviridae, which cause infections in humans. Eight members of herpes virus infect humans to cause a variety of illnesses including cold sores, chickenpox or varicella, shingles or herpes zoster (VZV), cytomegalovirus (CMV), and various cancers, and can cause brain inflammation (encephalitis). All viruses in the herpes family produce life-long infections.

They are also called Human Herpes Virus 1 and 2 (HHV-1 and HHV-2) and are neurotropic and neuroinvasive viruses; they enter and hide in the human nervous system, accounting for their durability in the human body. HSV-1 is commonly associated with herpes outbreaks of the face known as cold sores or fever blisters, whereas HSV-2 is more often associated with genital herpes.

An infection by a herpes simplex virus is marked by watery blisters in the skin or mucous membranes of the mouth, lips or genitals. Lesions heal with a scab characteristic of herpetic disease. However, the infection is persistent and symptoms may recur periodically as outbreaks of sores near the site of original infection. After the initial, or primary, infection, HSV becomes latent in the cell bodies of nerves in the area. Some infected people experience sporadic episodes of viral reactivation, followed by transportation of the virus via the nerve's axon to the skin, where virus replication and shedding occurs.

Herpes is contagious if the carrier is producing and shedding the virus. This is especially likely during an outbreak but possible at other times. There is no cure yet, but there are treatments which reduce the likelihood of viral shedding.

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