Mild preseptic hypothermia is detrimental in rats
OBJECTIVE: We evaluated the effects of mild hypothermia (32 degrees C), established before experimental intra-abdominal sepsis, on outcome, cytokine pattern, and muscle tissue oxygenation.
DESIGN: Clinic modeling randomized laboratory trial.
SETTING: University laboratory.
SUBJECTS: Ninety-six male rats.
INTERVENTIONS: In a group-sequential design, using 42 rats per group, we compared mild hypothermia with normothermia before peritonitis. Peritoneal inoculation with human stool bacteria was performed to simulate clinical trial conditions. Additionally, 12 rats underwent preoperative mild hypothermia without infection.
MEASUREMENTS AND MAIN RESULTS: Primary end point was mortality at 120 hrs. Secondary end points were systemic cytokine concentrations, granulocyte counts, and muscle oxygen partial pressure. Survival rate was 40% (16 of 42) after preseptic hypothermia and 62% (26 of 42) after preseptic normothermia (p =.048). All hypothermic rats without infection survived. Interleukin-10 concentrations were 1843 +/- 96 pg/mL after preseptic hypothermia, 945 +/- 225 pg/mL with preseptic normothermia, and 520 +/- 121 pg/mL after hypothermia without infection (p<.001). Macrophage inflammatory protein-2 was comparable in the treatment groups. Interleukin-6 concentrations were 106 +/- 24 pg/mL after preseptic hypothermia and 276 +/- 76 pg/mL with preseptic normothermia (p<.05). Postinfection granulocyte count was 1.7 x 10(9)/L after hypothermia and 2.4 x 10(9)/L after normothermia (p =.2). After infection, muscle oxygen partial pressure was 47 +/- 10 mm Hg with preseptic hypothermia, 85 +/- 12 mm Hg in preseptic normothermia, and 49 +/- 9 mm Hg after hypothermia without infection (p =.7).
CONCLUSIONS: In this rat model of intra-abdominal sepsis, mild preseptic hypothermia (32 degrees C) reduced survival, impaired granulocyte recruitment, and changed cytokine balance, suggesting immunosuppression.
| Errataetall: |
CommentIn: Crit Care Med. 2004 Sep;32(9):1974-5. - PMID 15343036 |
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| Medienart: |
Artikel |
| Erscheinungsjahr: |
2004 |
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| Erschienen: |
2004 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:32 |
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| Enthalten in: |
Critical care medicine - 32(2004), 9 vom: 01. Sept., Seite 1899-903 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Torossian, Alexander [VerfasserIn] |
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| Themen: |
Cytokines |
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| Anmerkungen: |
Date Completed 07.10.2004 Date Revised 03.12.2021 published: Print CommentIn: Crit Care Med. 2004 Sep;32(9):1974-5. - PMID 15343036 Citation Status MEDLINE |
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| Förderinstitution / Projekttitel: |
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| 100 | 1 | |a Torossian, Alexander |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Mild preseptic hypothermia is detrimental in rats |
| 264 | 1 | |c 2004 | |
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| 500 | |a CommentIn: Crit Care Med. 2004 Sep;32(9):1974-5. - PMID 15343036 | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a OBJECTIVE: We evaluated the effects of mild hypothermia (32 degrees C), established before experimental intra-abdominal sepsis, on outcome, cytokine pattern, and muscle tissue oxygenation | ||
| 520 | |a DESIGN: Clinic modeling randomized laboratory trial | ||
| 520 | |a SETTING: University laboratory | ||
| 520 | |a SUBJECTS: Ninety-six male rats | ||
| 520 | |a INTERVENTIONS: In a group-sequential design, using 42 rats per group, we compared mild hypothermia with normothermia before peritonitis. Peritoneal inoculation with human stool bacteria was performed to simulate clinical trial conditions. Additionally, 12 rats underwent preoperative mild hypothermia without infection | ||
| 520 | |a MEASUREMENTS AND MAIN RESULTS: Primary end point was mortality at 120 hrs. Secondary end points were systemic cytokine concentrations, granulocyte counts, and muscle oxygen partial pressure. Survival rate was 40% (16 of 42) after preseptic hypothermia and 62% (26 of 42) after preseptic normothermia (p =.048). All hypothermic rats without infection survived. Interleukin-10 concentrations were 1843 +/- 96 pg/mL after preseptic hypothermia, 945 +/- 225 pg/mL with preseptic normothermia, and 520 +/- 121 pg/mL after hypothermia without infection (p<.001). Macrophage inflammatory protein-2 was comparable in the treatment groups. Interleukin-6 concentrations were 106 +/- 24 pg/mL after preseptic hypothermia and 276 +/- 76 pg/mL with preseptic normothermia (p<.05). Postinfection granulocyte count was 1.7 x 10(9)/L after hypothermia and 2.4 x 10(9)/L after normothermia (p =.2). After infection, muscle oxygen partial pressure was 47 +/- 10 mm Hg with preseptic hypothermia, 85 +/- 12 mm Hg in preseptic normothermia, and 49 +/- 9 mm Hg after hypothermia without infection (p =.7) | ||
| 520 | |a CONCLUSIONS: In this rat model of intra-abdominal sepsis, mild preseptic hypothermia (32 degrees C) reduced survival, impaired granulocyte recruitment, and changed cytokine balance, suggesting immunosuppression | ||
| 650 | 4 | |a Evaluation Study | |
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Research Support, U.S. Gov't, P.H.S. | |
| 650 | 7 | |a Cytokines |2 NLM | |
| 650 | 7 | |a Oxygen |2 NLM | |
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| 700 | 1 | |a Ruehlmann, Sebastian |e verfasserin |4 aut | |
| 700 | 1 | |a Middeke, Martin |e verfasserin |4 aut | |
| 700 | 1 | |a Sessler, Daniel I |e verfasserin |4 aut | |
| 700 | 1 | |a Lorenz, Wilfried |e verfasserin |4 aut | |
| 700 | 1 | |a Wulf, Hinnerk F |e verfasserin |4 aut | |
| 700 | 1 | |a Bauhofer, Artur |e verfasserin |4 aut | |
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