ABSTRACT
Abstract. There is little evidence regarding the relationship between parasites and acute appendicitis. In order to determine such a relationship, if any, 830 appendectomy specimens were studied. Age, sex, pathological findings and the presence and type of parasites and the type of parasite were analyzed. Parasites were present in 62 cases (7.46%). Ascaris lumbricoides and Trichuris trichiura were the most frequently encountered parasites. These were observed, alone or in combination, in 45 cases (72.5%). Appendix perforation, peritonitis, necrosis and flegmonous appearance, were more frequent in the cases of acute appendicitis without parasitic infestation (p < 0.05). There were no differences between the cases with or without parasitic infestation (p > 0.05) In cases of peritonitis. The low incidence of parasites among the appendectomy specimens and the failure to demonstrate its relationship with all events derived of appendicitis, do not support the hypothesis that parasites are a major cause of appendicitis in pediatric patients.
Resumen. Existe poca evidencia con respecto a la relación entre parásitos y apendicitis aguda. Con el objeto de clarificar dudas, se estudiaron 830 muestras de especimenes apendiculares. Se analizaron la edad, el sexo, los hallazgos histopatológicos, la presencia o no de parásitos y el tipo de parásito presente. Se observaron parásitos en 62 casos (7,46%). Ascaris lumbricoides y Trichuris trichiura fueron los parásitos mas frecuentemente visualizados, solos o en combinación en 45 casos (72,5%). La perforación apendicular, la peritonitis, la necrosis apendicular y las características flegmonosas del apéndice, fueron observados con mayor frecuencia en los casos sin infestación parasitaria (p < 0,05). En los casos de peritonitis, no se observó diferencia significativa entre los casos con o sin infestación parasitaria. La baja frecuencia de la presencia parasitaria en las biopsias estudiadas y la imposibilidad de demostrar una relación entre los parásitos y todas las manifestaciones histopatológicas de la apendicitis aguda, impiden afirmar que los parásitos constituyen una causa importante en la etiopatogénia de la apendicitis aguda en pacientes pediátricos.
Subject(s)
Child , Humans , Appendicitis/parasitology , Acute DiseaseABSTRACT
Hemp fiber is obtained from the plant Musa textilis. The cost of preparation of its raw fibers is low. The purpose of this paper was to compare the inflammatory response in the rat muscle tissue originated by both hemp and cotton fibers. Both types of fibers, were sacrificed at 15, 30 and 60 postoperative days. Muscle tissue sections were stained with hematoxilyneosin. The inflammatory response was measured by subtracting the suture surface area from the total granulomatous area. At 15 days, the inflammatory response were similar (P>0.05). We cannot conclude that the hemp fiber is superior to cotton, nevertheless, they behave the same. Therefore, hemp constitutes an alternative as suture material