IMR Press / FBL / Volume 12 / Issue 4 / DOI: 10.2741/2164

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on as a courtesy and upon agreement with Frontiers in Bioscience.

Immune response to retroviral infections of the brain
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1 Department of Hygiene, Microbiology and Social Medicine, Innsbruck Medical University and Ludwig-Boltzmann-Institute for AIDS Research, Innsbruck, Austria
2 Department of Dermatolgy and Venerology, AKH Linz, Austria
3 Department of Neurosurgery, Innsbruck Medical University, Austria
4 Institute of Pathology, Innsbruck Medical University, Austria
Academic Editor:Heribert Stoiber
Front. Biosci. (Landmark Ed) 2007, 12(4), 1508–1519;
Published: 1 January 2007
(This article belongs to the Special Issue Immune responses to retroviral infections)

Various neurological manifestations of retroviral infections have been reported, including peripheral neuropathy, encephalopathy and neuronal degeneration. After penetration into the central nervous system (CNS) the invading retroviruses meet a unique immunological situation that differs significantly from that in the periphery. Due to the blood-brain barrier with its general access restrictions peripheral T-cells, monocytes and B-cells are only "guests" in the brain; instead the immune balance is shifted in favour of the local innate immunity with microglia, astrocytes, cytokines/chemokines and complement forming the dominating defence network. The present article focuses on the most important retroviral infections and highlights the immunological aspects of the neuropathogenesis induced by selected retroviruses. These aspects include: (i) local and infiltrated immune cells as targets of retroviral infection; (ii) stimulation of the cerebral immunity network by retroviruses and subsequent steps of antiviral defence; and (iii) immune activation products as potential contributors to neural damage in the sensitive brain tissue.

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