Monocytes are resistant to apoptosis in systemic juvenile idiopathic arthritis

We investigated whether circulating monocytes from patients with systemic juvenile idiopathic arthritis (SJIA) are resistant to apoptosis and which apoptotic pathway(s) may mediate this resistance. A microarray analysis of peripheral blood mononuclear cells (PBMC) of SJIA samples and RT-PCR analysis...

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Veröffentlicht in:Clinical immunology (Orlando, Fla.). - 1999. - 136(2010), 2 vom: 01. Aug., Seite 257-68
1. Verfasser: Srivastava, Shivani (VerfasserIn)
Weitere Verfasser: Macaubas, Claudia, Deshpande, Chetan, Alexander, Heather C, Chang, Sheng-Yung, Sun, Yue, Park, Jane L, Lee, Tzielan, Begovich, Ann, Mellins, Elizabeth D
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Clinical immunology (Orlando, Fla.)
Schlagworte:Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Antibodies FASLG protein, human Fas Ligand Protein fas Receptor
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520 |a We investigated whether circulating monocytes from patients with systemic juvenile idiopathic arthritis (SJIA) are resistant to apoptosis and which apoptotic pathway(s) may mediate this resistance. A microarray analysis of peripheral blood mononuclear cells (PBMC) of SJIA samples and RT-PCR analysis of isolated monocytes showed that monocytes from active SJIA patients express transcripts that imply resistance to apoptosis. SJIA monocytes incubated in low serum show reduced annexin binding and diminished FasL up-regulation compared to controls. SJIA monocytes are less susceptible to anti-Fas-induced apoptosis and, upon activation of the mitochondrial pathway with staurosporine, show diminished Bid cleavage and Bcl-w down-regulation compared to controls. Exposure to SJIA plasma reduces responses to apoptotic triggers in normal monocytes. Thus, SJIA monocytes are resistant to apoptosis due to alterations in both the extrinsic and intrinsic apoptosis pathways, and circulating factors associated with active SJIA may confer this phenotype 
650 4 |a Journal Article 
650 4 |a Research Support, N.I.H., Extramural 
650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Macaubas, Claudia  |e verfasserin  |4 aut 
700 1 |a Deshpande, Chetan  |e verfasserin  |4 aut 
700 1 |a Alexander, Heather C  |e verfasserin  |4 aut 
700 1 |a Chang, Sheng-Yung  |e verfasserin  |4 aut 
700 1 |a Sun, Yue  |e verfasserin  |4 aut 
700 1 |a Park, Jane L  |e verfasserin  |4 aut 
700 1 |a Lee, Tzielan  |e verfasserin  |4 aut 
700 1 |a Begovich, Ann  |e verfasserin  |4 aut 
700 1 |a Mellins, Elizabeth D  |e verfasserin  |4 aut 
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