T-cell response to staphylococcal enterotoxin B is reduced among heart failure patients on ventricular device support.

Abstract:

:Infections are the major complication among patients on left ventricular device (LVAD) support. One mechanism that may explain the elevated incidence of infection is a deficiency in cellular immunity after LVAD placement. To test this hypothesis, we evaluated the in vitro T-cell-proliferative and cytokine response following challenge with staphylococcal enterotoxin B in 14 LVAD and 6 non-LVAD stable outpatients awaiting heart transplantation. Clinical outcome was followed for 12 months. Clinical outcome was poorer (P < .05) for LVAD vs non-LVAD patients. T-cell-proliferative response was lower (P = .002) for LVAD vs non-LVAD patients. Th1 cytokine expression was lower (P < .05) and Th2 cytokine expression was higher (P < .05) for LVAD vs non-LVAD patients. We conclude that LVAD recipients are hyporesponsive to superantigen challenge, indicating a depressed cellular immunity that may contribute to their increased susceptibility to infections.

journal_name

Transplant Proc

authors

Kimball P,Flattery M,Kasirajan V

doi

10.1016/j.transproceed.2006.10.153

subject

Has Abstract

pub_date

2006-12-01 00:00:00

pages

3695-6

issue

10

eissn

0041-1345

issn

1873-2623

pii

S0041-1345(06)01398-4

journal_volume

38

pub_type

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