PURPOSE: To evaluate the effects of metoclopramide on abdominal wall healing in rats in the presence of sepsis. METHODS: 40 rats divided into two groups of twenty animals, subdivided into two subgroups of 10 animals each: group (E) - treated with metoclopramide, and saline-treated control group. The two groups were divided into subgroups of 10 to be killed on the 3rd day (n = 10) or day 7 (n = 10) after surgery. Sepsis was induced by cecal ligation and puncture. We performed also the section and anastomosis in left colon. The synthesis of the abdominal wall was made with 3-0 silk thread. We measured the breaking strength of the abdominal wall and made the histopathological evaluation. RESULTS: on 3rd day postoperative, the average breaking strength in the E group was 0.83 ± 0.66 and in group C was 0.35 ± 0.46 (p = 0.010). On the seventh day, the breaking strength in group E was11.44 ± 5.07, in group C 11.66 ± 7.38 (p = 1.000). The E7 group showed lower inflammatory infiltration, foreign body reaction, fibrin than control. CONCLUSION: animals treated with metoclopramide had a higher resistance of the abdominal wall on the 3rd postoperative day.

Effects of bromopride on abdominal wall healing with induced peritonealsepsis after segmental colectomy and colonic anastomosis in rats IEfeitos da bromoprida na cicatrização da parede abdominal com sepse peritonial induzida e submetidos à ressecção segmentar e anastomose do cólon esquerdo em ratos ABSTRACT PURPOSE: Evaluate the effects of bromopride on abdominal wall healing of rats with induced peritoneal sepsis after segmental colectomy and colonic anastomosis. METHODS:Forty rats underwent sectioning of the left colon and end-to-end anastomosis and were divided into two groups of 20 animals for the administration of bromopride (bromopride group -B) or saline solution (control group -C). Each group was divided into subgroups of 10 animals each to be killed on the third (GB3 and GC3) or seventh postoperative day (GB7 and GC7). It was analyzed the following characteristics: breaking strength of the abdominal wall's wound; surgical and histopathological features of the abdominal wall; and clinical features of the rats. RESULTS:There was no difference between the groups in relation to the weight of the rats and the breaking strength of the abdominal wall's wound. The GB7 group presented less edema and less quantity of fibrin during histopathological evaluation compared to the GC7 group. CONCLUSION: Bromopride did not have harmful effects on the healing of abdominal wall in rats.Keywords: Wound Healing. Abdominal Wall. Dopamine Antagonists. Antiemetics. Rats. RESUMO OBJETIVO:Avaliar o efeito da bromoprida, na cicatrização da ferida operatória da parede abdominal de ratos com sepse peritoneal experimentalmente induzida e submetidos a ressecção segmentar e anastomose de cólon esquerdo.MÉTODOS: 40 ratos distribuídos em dois grupos contendo 20 animais, para administração de bromoprida (grupo bromoprida-B) ou solução de NaCl 0,9% (grupo controle -C). Cada grupo foi dividido em subgrupos contendo 10 animais, para eutanásia no terceiro (GB3 e GC3) ou sétimo dia (GB7 e GE7) de pós-operatório. Os ratos foram submetidos à secção do cólon esquerdo e anastomose término-terminal. No dia da eutanásia foram avaliadas as características cirúrgicas da cavidade abdominal e clínicas dos ratos. Foram coletados segmentos da parede para a avaliação histopatológica e de resistência tênsil da ferida operatória. RESULTADOS:Não houve diferenças entre os pesos dos ratos e resistência tênsil da ferida operatória nos dois grupos. Em relação a análise histopatológica, o grupo GB7 apresentou menos edema e menos fibrina que o grupo GC7. Não houve outras diferenças. CONCLUSÃO:A utilização de bromoprida não resultou em distúrbios ou retardo da cicatrização no grupo de ratos submetidos à laparotomia e anastomose término-terminal em condições de sepse peritoneal.Descritores: Cicatrização. Parede Abdominal. Antagonistas de Dopamina. Antieméticos. Ratos.Oliveira MVM et al.

PURPOSE: To evaluate the influence of sepsis in the process of wound healing in the abdominal wall. METHODS: 40 rats divided into two groups of twenty animals: group of study (E) - septic, and the control group (C) - not septic. The two groups were divided into subgroups of 10 to be killed on the third day (n = 10) or seventh (n = 10) postoperative. Sepsis was induced by ligation and puncture of the cecum. We performed also the section and anastomosis in left colon. The synthesis of the abdominal wall was made with 3-0 silk thread. On the day of re-laparotomy, the abdominal wall was removed for analysis of the breaking strength and histopathological analysis. RESULTS: The mean breaking strength was at third day: E group (1.44 ± 1.22) and C group (0.35 ± 0.46). At seventh day the mean breaking strength was: E group (13.01 ± 7.09) and C group (11.66 ± 7.38). There was statistical difference in tensile strength. E group at third day with control group (p = 0.019). CONCLUSION: The induction of peritoneal sepsis reduced the breaking strength of the abdominal wall on the third day after surgery.

PuRPOSE:To evaluate the effects of bromopride on the healing of left colonic anastomoses in rats with induced abdominal sepsis. METHOdS: Forty rats were divided into two groups to receive either bromopride (experimental group-E) or saline (control group-C). Each group was divided into subgroups of ten animals each to be euthanized on third (E3 and C3) or seventh day (E7 and C7) after surgery. Sepsis was induced by cecal ligation and puncture. The rats underwent segmental left colon resection and end-to-end anastomosis. Adhesion formation, tensile strength and hydroxyproline concentration were assessed. Histomorphometry of collagen and histopathological analysis were also performed. RESuLTS: On postoperative third day, anastomoses in bromopride-treated animals showed lower tensile strength (p=0.02) and greater reduction in hydroxyproline concentration (p=0.04) than in control animals. There was no statistical difference in these parameters on seventh day, and the remaining parameters were similar across subgroups. Collagen content was also similar across subgroups. CONCLuSION: In the presence of abdominal sepsis, the administration of bromopride was associated with decreased tensile strength and hydroxyproline concentration in left colonic anastomoses in rats three days after surgery. Key words: Anastomosis, Surgical. Colon. Sepsis. Grastrointestinal Motility. Tissue Adhesions. Rats. RESuMO OBJETIVO:Avaliar os efeitos da bromoprida sobre a cicatrização de anastomoses de cólon esquerdo de ratos na presença de sepse abdominal. MéTOdOS: Quarenta ratos distribuídos em grupos contendo 20 animais para administração de bromoprida ou salina. Cada grupo foi dividido em subgrupos contendo dez animais, para eutanásia no terceiro ou no sétimo dia de pós-operatório. A indução da sepse foi realizada pelo método de ligadura e punção do ceco. Foi realizada ressecção de um segmento do cólon esquerdo e anastomose término-terminal. À re-laparotomia, foi avaliada a quantidade total de aderências e removido um segmento colônico contendo a anastomose para análise histopatológica, força de ruptura, concentração de hidroxiprolina e histomorfometria do colágeno. RESuLTAdOS: No 3° DPO, as anastomoses dos animais tratados com bromoprida apresentaram menor força de ruptura (p=0,02) e maior redução da concentração de hidroxiprolina (p=0,04) que os animais controle. Não houve diferença estatística quanto a estes parâmetros no 7° DPO. O conteúdo de colágeno foi semelhante entre os subgrupos. CONCLuSãO: Na presença de sepse abdominal, o uso da bromoprida esteve associado à diminuição da força de ruptura e da concentração de hidroxiprolina das anastomoses do cólon esquerdo de ratos no 3° DPO. descritores: Anastomose Cirúrgica. Cólon. Sepse. Motilidade Gastrointestinal. Aderências Teciduais. Ratos. Effects of bromopride on the healing of left colonic anastomoses in rats with induced abdominal sepsis

PURPOSE: To assess the effect of prokinetic agents on abdominal wall wound healing in rats submitted to segmental colectomy and colonic anastomosis. METHODS: Sixty rats were randomly allocated into three groups according to the agents they would receive in the postoperative period: M (metoclopramide); B (bromopride); and C (control, saline 0.9%). Surgical procedures were performed identically in all animals, and consisted of a midline laparotomy followed by resection of a 1-cm segment of large bowel with end-to-end anastomosis. The abdominal wall was closed in two layers with running stitches. Abdominal wall samples were collected on the 3rd or 7th postoperative day for measurement of breaking (tensile) strength and histopathological assessment. RESULTS: There were no statistically significant differences in tensile strength of the abdominal wall scar between groups M, B, and C, nor between the three and seven days after surgery subgroups. On histopathological assessment, there were no statistically significant between-group differences in collagen deposition or number of fibroblasts at the wound site CONCLUSION: Use of the prokinetic drugs metoclopramide or bromopride had no effect on abdominal wall healing in rats submitted to segmental colectomy and colonic anastomosis.