Progressive multifocal leukoencephalopathy (PML)
is a topic covered in the Johns Hopkins HIV Guide
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- JC (after patient "JC" John Cunningham) virus is a ubiquitous neurotropic ds-DNA polyomavirus. Infects oligodendrocytes and astrocytes.
- Primarily affects deep and subcortical white matter of brain and can expand into cortical gray matter. Rarely involves spinal cord. Spares optic nerve.
- Virus resides in extraneural reservoirs, i.e., lymphoid tissue, kidney, and bone marrow. Excreted in urine of healthy individuals and those with PML.
- Seroprevalence of 70-80%, antibody not protective, those with deficient cellular response, e.g. HIV/AIDS, organ transplantation, hematologic malignancies, and those receiving immunosuppressive therapies, are at risk for PML.
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Last updated: October 31, 2015
Spacek, Lisa A. "Progressive Multifocal Leukoencephalopathy (PML)." Johns Hopkins HIV Guide, 2015. Johns Hopkins Guide, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545172/all/Progressive_multifocal_leukoencephalopathy__PML_.
Spacek LA. Progressive multifocal leukoencephalopathy (PML). Johns Hopkins HIV Guide. 2015. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545172/all/Progressive_multifocal_leukoencephalopathy__PML_. Accessed May 21, 2019.
Spacek, L. A. (2015). Progressive multifocal leukoencephalopathy (PML). In Johns Hopkins HIV Guide. Available from https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545172/all/Progressive_multifocal_leukoencephalopathy__PML_
Spacek LA. Progressive Multifocal Leukoencephalopathy (PML) [Internet]. In: Johns Hopkins HIV Guide. ; 2015. [cited 2019 May 21]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545172/all/Progressive_multifocal_leukoencephalopathy__PML_.
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