Abstract
Although Kupffer cell, splenic, and peritoneal macrophage functions are markedly altered following trauma-hemorrhage (T-H), it remains unclear whether T-H also affects splenic dendritic cell (sDC) functions. We hypothesized that sDC functions will also be compromised following T-H. Male C3H/HeN (6- to 8-wk) mice were randomly assigned to sham operation or T-H. T-H was induced by midline laparotomy and ∼90 min of hemorrhagic shock (blood pressure 35 mmHg), followed by fluid resuscitation (four times the shed blood volume in the form of Ringer's lactate). Two hours later, the mice were sacrificed; sDC were isolated; and the changes in their apoptosis, MHC class II expression, and ability to produce costimulatory cytokines and Ag presentation were measured. The results indicate that sDC Ag presentation capacity was significantly decreased and MHC class II expression was also significantly decreased following T-H. Moreover, LPS-induced IL-12 production and LPS- or IL-12-induced IFN-γ production following T-H were significantly decreased. Thus, the markedly decreased M-H class II expression and cytokine (IL-12, IFN-γ) production following T-H may be the cause for the depressed sDC Ag presentation under those conditions. This depression in Ag presentation could contribute to the host's enhanced susceptibility to sepsis following T-H.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4514-4520 |
| Number of pages | 7 |
| Journal | Journal of Immunology |
| Volume | 177 |
| Issue number | 7 |
| State | Published - Oct 1 2006 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Immunology
Cite this
Trauma-hemorrhage induces depressed splenic dendritic cell functions in mice. / Kawasaki, Takashi; Hubbard, William J.; Choudhry, Mashkoor A.; Schwacha, Martin G; Bland, Kirby I.; Chaudry, Irshad H.
In: Journal of Immunology, Vol. 177, No. 7, 01.10.2006, p. 4514-4520.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Trauma-hemorrhage induces depressed splenic dendritic cell functions in mice
AU - Kawasaki, Takashi
AU - Hubbard, William J.
AU - Choudhry, Mashkoor A.
AU - Schwacha, Martin G
AU - Bland, Kirby I.
AU - Chaudry, Irshad H.
PY - 2006/10/1
Y1 - 2006/10/1
N2 - Although Kupffer cell, splenic, and peritoneal macrophage functions are markedly altered following trauma-hemorrhage (T-H), it remains unclear whether T-H also affects splenic dendritic cell (sDC) functions. We hypothesized that sDC functions will also be compromised following T-H. Male C3H/HeN (6- to 8-wk) mice were randomly assigned to sham operation or T-H. T-H was induced by midline laparotomy and ∼90 min of hemorrhagic shock (blood pressure 35 mmHg), followed by fluid resuscitation (four times the shed blood volume in the form of Ringer's lactate). Two hours later, the mice were sacrificed; sDC were isolated; and the changes in their apoptosis, MHC class II expression, and ability to produce costimulatory cytokines and Ag presentation were measured. The results indicate that sDC Ag presentation capacity was significantly decreased and MHC class II expression was also significantly decreased following T-H. Moreover, LPS-induced IL-12 production and LPS- or IL-12-induced IFN-γ production following T-H were significantly decreased. Thus, the markedly decreased M-H class II expression and cytokine (IL-12, IFN-γ) production following T-H may be the cause for the depressed sDC Ag presentation under those conditions. This depression in Ag presentation could contribute to the host's enhanced susceptibility to sepsis following T-H.
AB - Although Kupffer cell, splenic, and peritoneal macrophage functions are markedly altered following trauma-hemorrhage (T-H), it remains unclear whether T-H also affects splenic dendritic cell (sDC) functions. We hypothesized that sDC functions will also be compromised following T-H. Male C3H/HeN (6- to 8-wk) mice were randomly assigned to sham operation or T-H. T-H was induced by midline laparotomy and ∼90 min of hemorrhagic shock (blood pressure 35 mmHg), followed by fluid resuscitation (four times the shed blood volume in the form of Ringer's lactate). Two hours later, the mice were sacrificed; sDC were isolated; and the changes in their apoptosis, MHC class II expression, and ability to produce costimulatory cytokines and Ag presentation were measured. The results indicate that sDC Ag presentation capacity was significantly decreased and MHC class II expression was also significantly decreased following T-H. Moreover, LPS-induced IL-12 production and LPS- or IL-12-induced IFN-γ production following T-H were significantly decreased. Thus, the markedly decreased M-H class II expression and cytokine (IL-12, IFN-γ) production following T-H may be the cause for the depressed sDC Ag presentation under those conditions. This depression in Ag presentation could contribute to the host's enhanced susceptibility to sepsis following T-H.
UR - http://www.scopus.com/inward/record.url?scp=33749133018&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749133018&partnerID=8YFLogxK
M3 - Article
C2 - 16982888
AN - SCOPUS:33749133018
VL - 177
SP - 4514
EP - 4520
JO - Journal of Immunology
JF - Journal of Immunology
SN - 0022-1767
IS - 7
ER -