The term BK polyomavirus is often used in medical research to describe a strain of polyomavirus that can cause illness in humans. The correct spelling of this term can be somewhat confusing, as the polyomavirus is pronounced differently than it looks. Specifically, the first syllable of polyomavirus is pronounced like "pah-lee-oh," while the second syllable is pronounced like "oh-mah." When combined with the initials "BK," the resulting pronunciation is "bee-kay pah-lee-oh-mah-vye-rus."
BK polyomavirus, also known as BK virus (BKV), is a small, non-enveloped virus belonging to the family Polyomaviridae. It was first isolated in 1971 from the urine of a renal transplant patient with initials B.K., hence the name. BKV is classified into the Polyomavirus genus, which includes other human polyomaviruses such as JC virus (JCV) and simian virus 40 (SV40).
BK polyomavirus primarily infects humans and has a worldwide distribution. It affects individuals with weakened immune systems, particularly organ transplant recipients and individuals with HIV/AIDS. The virus persists silently in the kidneys of healthy individuals but can reactivate under immunocompromised conditions, leading to various clinical manifestations, especially in the renal system.
Infection by BKV is commonly asymptomatic, but it may cause serious complications such as BK virus-associated nephropathy (BKVAN) in kidney transplant recipients. BKVAN is characterized by damage to the renal tubular epithelial cells, potentially leading to graft dysfunction or even graft loss. BKV can also cause other diseases, including hemorrhagic cystitis and ureteral stenosis, although these are less frequent.
Diagnosis of BK polyomavirus infection is typically performed through various methods, including polymerase chain reaction (PCR) testing, serological assays, and histopathological examination. Treatment options for BKV infection are limited, focusing mainly on supportive care and reducing immunosuppression. Antiviral drugs, such as cidofovir or leflunomide, may be used in certain cases to inhibit viral replication and reduce complications.
Prevention of BK polyomavirus infection primarily relies on surveillance and monitoring of kidney transplant recipients, adjusting immunosup
The word "BK polyomavirus" has its etymology derived from the acronym "BK" referring to the initials of the patient from whom the virus was first isolated during research in the 1970s. The patient was a kidney transplant recipient identified only as "B.K". Furthermore, "polyomavirus" is a combination of "poly-", meaning many, and "oma", meaning tumor. Polyomaviruses are a group of DNA viruses known for their potential association with tumor formation.