title: Investigations on four host response factors whose expression is enhanced in X4 SHIV encephalitis.
abstract: HIV encephalopathy, one of the major complications of HIV infection, involves productive virus replication in macrophages in the brain in association with heightened expression of several host response factors. One or more of these factors are thought to be the cause of the degenerative changes in neurons in the brain. Macaques infected with SIV and SHIV viruses have provided excellent working models for studying mechanisms of the human disease. Although HIV encephalopathy is primarily associated with CCR5-utilizing viruses, our findings have shown that CXCR4-utilizing SHIVs were also capable of causing the syndrome in rhesus macaques. In SHIV-infected macaques, approximately 30% of the animals developed encephalitis. In order to understand the factors leading to end-stage encephalitis, we performed microarray analyses on brains of encephalitic and non-encephalitic-infected macaques, and found pronounced enhancement of expression of interleukin-4, platelet-derived growth factor-B chain, monocyte chemoattractant protein-1 and CXCL10 in the brains of the encephalitic animals. This review discusses the role of each of these factors in mediating SHIV encephalitis.
authors.affiliation: Department of Microbiology, Immunology and Molecular Genetics, Marion Merrell Dow Laboratory of Viral Pathogenesis, 5000 Wahl Hall East, University of Kansas Medical Center, 3901 Rainbow Blvd., Kansas City, KS 66160, USA. sbuch@kumc.edu
authors.forename: Shilpa
authors.initials: S
authors.lastname: Buch
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Sui
authors.forename: Navneet
authors.initials: N
authors.lastname: Dhillon
authors.forename: Raghava
authors.initials: R
authors.lastname: Potula
authors.forename: Christoher
authors.initials: C
authors.lastname: Zien
authors.forename: David
authors.initials: D
authors.lastname: Pinson
authors.forename: Shanping
authors.initials: S
authors.lastname: Li
authors.forename: Sukhbir
authors.initials: S
authors.lastname: Dhillon
authors.forename: Brandon
authors.initials: B
authors.lastname: Nicolay
authors.forename: Alex
authors.initials: A
authors.lastname: Sidelnik
authors.forename: Cicy
authors.initials: C
authors.lastname: Li
authors.forename: Tara
authors.initials: T
authors.lastname: Villinger
authors.forename: Kunal
authors.initials: K
authors.lastname: Bisarriya
authors.forename: Opendra
authors.initials: O
authors.lastname: Narayan
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism / Q000821:virology; D018932:Chemokine CCL2 / Q000378:metabolism; D054357:Chemokine CXCL10; D019743:Chemokines, CXC / Q000378:metabolism; D004195:Disease Models, Animal; D004660:Encephalitis / Q000209:etiology / Q000378:metabolism*; D006801:Humans; D015847:Interleukin-4 / Q000378:metabolism; D008959:Models, Neurological; D020574:Proto-Oncogene Proteins c-sis / Q000378:metabolism; D016097:Simian Acquired Immunodeficiency Syndrome / Q000150:complications / Q000378:metabolism*
chemical_list: D018932:Chemokine CCL2; D054357:Chemokine CXCL10; D019743:Chemokines, CXC; D020574:Proto-Oncogene Proteins c-sis; D015847:Interleukin-4