Human herpesvirus 8 genoprevalence in populations at disparate risks of Kaposi's sarcoma

2006 ◽  
Vol 79 (1) ◽  
pp. 52-59 ◽  
Author(s):  
Navdeep Kumar ◽  
Ken McLean ◽  
Naoki Inoue ◽  
David R. Moles ◽  
Crispian Scully ◽  
...  
Keyword(s):  
Kaposi's Sarcoma ◽  
Human Herpesvirus ◽  
Kaposi’S Sarcoma ◽  
Human Herpesvirus 8 ◽  
Herpesvirus 8

Detection of human herpesvirus 8 DNA and antibodies to latent nuclear and lytic-phase antigens in serial samples from aids patients with Kaposi’s sarcoma

2000 ◽  
Vol 16 (3) ◽  
pp. 247-251 ◽  
Author(s):  
Lı́gia Camera Pierrotti ◽  
Laura Masami Sumita ◽  
Wilton Santos Freire ◽  
Hélio Hehl Caiaffa Filho ◽  
Vanda Akico Ueda Fick de Souza
Keyword(s):  
Kaposi's Sarcoma ◽  
Human Herpesvirus ◽  
Kaposi’S Sarcoma ◽  
Human Herpesvirus 8 ◽  
Aids Patients ◽  
Herpesvirus 8 ◽  
Serial Samples

scholarly journals Activation of NF-κB by the Human Herpesvirus 8 Chemokine Receptor ORF74: Evidence for a Paracrine Model of Kaposi's Sarcoma Pathogenesis

2001 ◽  
Vol 75 (18) ◽  
pp. 8660-8673 ◽  
Author(s):  
Shibani Pati ◽  
Marielle Cavrois ◽  
Hong-Guang Guo ◽  
James S. Foulke ◽  
Jynho Kim ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Kaposi's Sarcoma ◽  
Vascular Endothelial Cells ◽  
Inositol Phosphate ◽  
Human Herpesvirus ◽  
Kaposi’S Sarcoma ◽  
Lymphoid Cells ◽  
Human Herpesvirus 8 ◽  
Herpesvirus 8 ◽  
Latently Infected

ABSTRACT Infection with human herpesvirus 8 (HHV-8), also known as Kaposi's sarcoma (KS)-associated herpesvirus, is necessary for the development of KS. The HHV-8 lytic-phase gene ORF74 is related to G protein-coupled receptors, particularly interleukin-8 (IL-8) receptors. ORF74 activates the inositol phosphate/phospholipase C pathway and the downstream mitogen-activated protein kinases, JNK/SAPK and p38. We show here that ORF74 also activates NF-κB independent of ligand when expressed in KS-derived HHV-8-negative endothelial cells or primary vascular endothelial cells. NF-κB activation was enhanced by the chemokine GROα, but not by IL-8. Mutation of Val to Asp in the ORF74 second cytoplasmic loop did not affect ligand-independent signaling activity, but it greatly increased the response to GROα. ORF74 upregulated the expression of NF-κB-dependent inflammatory cytokines (RANTES, IL-6, IL-8, and granulocyte-macrophage colony-stimulating factor) and adhesion molecules (VCAM-1, ICAM-1, and E-selectin). Supernatants from transfected KS cells activated NF-κB signaling in untransfected cells and elicited the chemotaxis of monocytoid and T-lymphoid cells. Expression of ORF74 conferred on primary endothelial cells a morphology that was strikingly similar to that of spindle cells present in KS lesions. Taken together, these data, demonstrating that ORF74 activates NF-κB and induces the expression of proangiogenic and proinflammatory factors, suggest that expression of ORF74 in a minority of cells in KS lesions could influence uninfected cells or latently infected cells via autocrine and paracrine mechanisms, thereby contributing to KS pathogenesis.

Lytic growth of Kaposi's sarcoma–associated herpesvirus (human herpesvirus 8) in culture

1996 ◽  
Vol 2 (3) ◽  
pp. 342-346 ◽  
Author(s):  
Rolf Renne ◽  
Weidong Zhong ◽  
Brian Herndier ◽  
Michael Mcgrath ◽  
Nancy Abbey ◽  
...  
Keyword(s):  
Kaposi's Sarcoma ◽  
Human Herpesvirus ◽  
Kaposi’S Sarcoma ◽  
Human Herpesvirus 8 ◽  
Herpesvirus 8 ◽  
Kaposi's Sarcoma Associated Herpesvirus ◽  
Kaposi’S Sarcoma Associated Herpesvirus
Sign in / Sign up

Export Citation Format

Share Document