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1.
Acta cir. bras ; 29(11): 735-741, 11/2014. tab, graf
Article in English | LILACS | ID: lil-728650

ABSTRACT

PURPOSE: To evaluate intestinal inflammatory and apoptotic processes after intestinal ischemia/reperfusion injury, modulated by pentoxifylline and hypertonic saline. METHODS: It was allocated into four groups (n=6), 24 male Wistar rats (200 to 250g) and submitted to intestinal ischemia for 40 min and reperfusion for 80 min: IR (did not receive any treatment); HS group (Hypertonic Saline, 4ml/kg-IV); PTX group (Pentoxifylline, 30mg/kg-IV); HS+PTX group (Hypertonic Saline and Pentoxifylline). All animals were heparinized (100U/kg). At the end of reperfusion, ileal fragments were removed and stained on hematoxylin-eosin and histochemical studies for COX-2, Bcl-2 and cleaved caspase-3. RESULTS: The values of sO2 were higher on treated groups at 40 minutes of reperfusion (p=0.0081) and 80 minutes of reperfusion (p=0.0072). Serum lactate values were lower on treated groups after 40 minutes of reperfusion (p=0.0003) and 80 minutes of reperfusion (p=0.0098). Morphologic tissue injuries showed higher grades on IR group versus other groups: HS (p=0.0006), PTX (p=0.0433) and HS+PTX (p=0.0040). The histochemical study showed lesser expression of COX-2 (p=0.0015) and Bcl-2 (p=0.0012) on HS+PTX group. A lower expression of cleaved caspase-3 was demonstrated in PTX (p=0.0090; PTXvsIR). CONCLUSION: The combined use of pentoxifylline and hypertonic saline offers best results on inflammatory and apoptotic inhibitory aspects after intestinal ischemia/reperfusion. .


Subject(s)
Animals , Male , Apoptosis/drug effects , Intestines/blood supply , Ischemia/complications , Pentoxifylline/pharmacology , Phosphodiesterase Inhibitors/pharmacology , Reperfusion Injury/prevention & control , Saline Solution, Hypertonic/pharmacology , /analysis , /analysis , Immunohistochemistry , Intestines/drug effects , Ischemia/prevention & control , Lactic Acid/blood , Oxygen/metabolism , Pentoxifylline/therapeutic use , Phosphodiesterase Inhibitors/therapeutic use , Rats, Wistar , Reference Values , Reproducibility of Results , Reperfusion Injury/blood , Saline Solution, Hypertonic/therapeutic use , Time Factors
2.
Acta cir. bras ; 23(5): 405-411, Sept.-Oct. 2008. ilus, graf, tab
Article in English | LILACS | ID: lil-491904

ABSTRACT

INTRODUCTION: Two anorectal manometry techniques have commonly been utilized: the perfusion technique and the balloon technique. PURPOSE: To compare both techniques in children with intestinal constipation who had not undergone surgical treatment for its correction. METHODS: Thirty-nine children aged between four and fourteen years underwent anorectal manometry using both techniques at random. Resting pressure, pressure response to voluntary contraction, coughing and perianal stimulation, maximum pressure on the anal canal pressure curve, and presence of rectosphincteric reflex were registered and submitted to statistics. Vectorgraphy of the sphincter muscle complex was obtained by perfusion technique. RESULTS: The statistical comparison between the techniques revealed statistically significant differences in resting pressure (p=0.041), pressure response to voluntary contraction (p=0.026) and maximum pressure within the pressure curve (p=0.010). The rectosphincteric reflex was demonstrated in 21 patients by both techniques. CONCLUSIONS: The perfusion technique presented greater sensitivity in the following parameters: resting pressure, pressure response to voluntary contraction and maximum pressure within the pressure curve. The methods studied are equivalent regarding the measurement of pressure responses to coughing and perianal stimulation and the investigation of rectosphincteric reflex.


INTRODUÇÃO: A manometria anorretal tem sido aceita como uma técnica objetiva de estudar a função do complexo muscular esfincteriano. Duas técnicas para o mesmo exame têm sido utilizadas: por perfusão e por balão. OBJETIVO: Comparar as técnicas entre as crianças portadoras de constipação intestinal que não foram submetidas a tratamento cirúrgico como forma de tratamento. MÉTODOS: Trinta e nove crianças com idades entre quarto e quatorze anos foram submetidas à Manometria anorretal utilizando-se ambas as técnicas de forma randomizada. Analizou-se a pressão de repouso, a pressão de contração voluntária, a pressão de contração reflexa, a pressão máxima de contração, o reflexo reto-esfincteriano. Além desses parâmetros, o vetorgrama do canal anal foi estudado pela técnica de perfusão. A análise estatística foi feita por meio de Wilcoxon signed rank test. RESULTADOS: A comparação estatística entre as técnicas revelou diferenças significantemente estatísticas nos parâmetros: pressão de repouso (p= 0.041), Pressão de contração voluntária (p= 0.026) e pressão máxima de contração (p= 0.010). Não houve diferença estatisticamente significante nos parâmetros: pressão de contração reflexa por tosse (p= 0.141) ou por estimulação perianal (p= 0.117). O reflexo reto-esfincteriano foi demonstrado em 21 pacientes em ambas as técnicas. CONCLUSÕES: A técnica de perfusão tem maior sensibilidade para os seguintes parâmetros: pressão de repouso, pressão de contração voluntária e pressão máxima de contração. As técnicas se equivalem no que diz respeito à pressão de contração reflexa e reflexo reto-esfincteriano.


Subject(s)
Adolescent , Child , Child, Preschool , Humans , Anal Canal/physiopathology , Constipation/physiopathology , Manometry/methods , Rectum/physiopathology , Catheterization , Chronic Disease , Manometry/instrumentation
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