OBJECTIVE: We evaluated the hypothesis that induced perioperative hypothermia in rats causes adverse effects on the healing of colonic anastomosis. MATERIALS AND METHODS: Forty-eight Wistar rats were divided into eight groups of six animals that underwent laparotomy, sigmoid section, and anastomosis. Four groups were operated under normothermic conditions (36 ± 1 °C) and four under hypothermic conditions (32 ± 1 °C). The reoperations were performed on days 3, 7, and 14 post-surgery, and two groups where SHAM reoperated on day 3. We evaluated anastomotic bursting pressure and tissue hydroxyproline content; performed a histological analysis of inflammatory parameters and healing (inflammatory cell infiltrate, edema, fibrin, collagen deposition and apoptotic cells) with categorization scores = 0, 1, 2, 3; and examined the relative quantification gene expression (cDNA) of inflammatory cytokines [interleukin 1 (IL-1), interleukin 6 (IL-6), and interleukin 10 (IL-10)] and growth factors [vascular endothelial growth factor and insulin-like growth factor 1 (IGF-1)] by reverse transcription polymerase chain reaction. RESULTS: Both of the hypothermic groups showed lower anastomotic burst pressure on days 7 and 14 post-surgery, reduced hydroxyproline content on day 14, reduction of inflammatory infiltrates and edema at day 3, and less collagen deposition on day 14. In animals that were hypothermic, the cytokine gene expression showed reduced IL-1 on day 3, reduced IL-6 on days 7 and 14, and reduced IL-10 on days 7 and 14 and a reduction in the growth factor IGF-1 on day 7. CONCLUSION: Perioperative hypothermia had detrimental effects on the healing of colonic anastomosis in rats.
OBJECTIVE: We evaluated the hypothesis that induced perioperative hypothermia in rats causes adverse effects on the healing of colonic anastomosis. MATERIALS AND METHODS: Forty-eight Wistar rats were divided into eight groups of six animals that underwent laparotomy, sigmoid section, and anastomosis. Four groups were operated under normothermic conditions (36 ± 1 °C) and four under hypothermic conditions (32 ± 1 °C). The reoperations were performed on days 3, 7, and 14 post-surgery, and two groups where SHAM reoperated on day 3. We evaluated anastomotic bursting pressure and tissue hydroxyproline content; performed a histological analysis of inflammatory parameters and healing (inflammatory cell infiltrate, edema, fibrin, collagen deposition and apoptotic cells) with categorization scores = 0, 1, 2, 3; and examined the relative quantification gene expression (cDNA) of inflammatory cytokines [interleukin 1 (IL-1), interleukin 6 (IL-6), and interleukin 10 (IL-10)] and growth factors [vascular endothelial growth factor and insulin-like growth factor 1 (IGF-1)] by reverse transcription polymerase chain reaction. RESULTS: Both of the hypothermic groups showed lower anastomotic burst pressure on days 7 and 14 post-surgery, reduced hydroxyproline content on day 14, reduction of inflammatory infiltrates and edema at day 3, and less collagen deposition on day 14. In animals that were hypothermic, the cytokine gene expression showed reduced IL-1 on day 3, reduced IL-6 on days 7 and 14, and reduced IL-10 on days 7 and 14 and a reduction in the growth factor IGF-1 on day 7. CONCLUSION: Perioperative hypothermia had detrimental effects on the healing of colonic anastomosis in rats.
Authors: A Vignali; V W Fazio; I C Lavery; J W Milsom; J M Church; T L Hull; S A Strong; J R Oakley Journal: J Am Coll Surg Date: 1997-08 Impact factor: 6.113
Authors: Alexander Torossian; Sebastian Ruehlmann; Martin Middeke; Daniel I Sessler; Wilfried Lorenz; Hinnerk F Wulf; Artur Bauhofer Journal: Crit Care Med Date: 2004-09 Impact factor: 7.598
Authors: Marie Kjaer; Wayne Russell; Peter Schjerling; Elena Cottarelli; Kennet N Christjansen; Ditte M G Olsen; Peter-Martin Krarup; Lene Jessen; Mark Berner-Hansen; Lars N Jorgensen; Magnus S Ågren Journal: Gastroenterol Res Pract Date: 2020-10-09 Impact factor: 2.260