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1.
Rev. méd. Chile ; 140(9): 1179-1184, set. 2012. ilus
Article in English | LILACS | ID: lil-660077

ABSTRACT

Solid-pseudopapillary tumor of pancreas is a rare neoplasm which occurs pre-dominantely in young females. This tumor generally is asymptomatic or minimally symptomatic and some imaging tests are useful for its diagnosis. We report a 17 years-old woman with dyspeptic symptoms submitted to an abdominal ultrasound (US), that revealed a hypoechogenic mass between the liver, right kidney and pancreas. Computer tomography (CT) scan showed a hypodense and heterogeneous mass on pancreas head. The patient underwent elective resection of the mass and the histopathology was consistent with a solid-pseudopapillary tumor of pancreas. Immunohistochemical positivity for NSE (neuron-specific enolase), progesterone receptor, alfa-1-antitrypsin, vimentin, AE1/AE3, and negativity for synaptophysin and chromogranin A confirmed the diagnosis. After four years of clinical follow-up, the patient remains in a good general condition without signs of tumor recurrence.


El tumor sólido pseudopapilar de páncreas es una neoplasia poco frecuente, que ocurre predominantemente en mujeres jóvenes. Este tumor generalmente es asintomático o mínimamente sintomático y las imágenes son útiles para su diagnóstico. Presentamos una mujer de 17 años de edad con dispepsia que fue sometida a una ecografía abdominal que reveló una masa tumoral hipoecogénica entre el hígado, el riñón derecho y el páncreas. La tomografía computarizada mostró una masa hipodensa y heterogénea en la cabeza del páncreas. La paciente fue sometida a resección electiva de la masa y la histopatología fue consistente con el tumor sólido pseudopapilar de páncreas. La inmunohistoquímica fue positiva para NSE (enolasa neuronal específica), receptor de progesterona, alfa-1-antitripsina, vimentina, AE1/ AE3, y negativa para sinaptofisina y cromogranina A, lo que confirmó el diagnóstico. Después de cuatro años seguimiento clínico, la paciente permanece en buen estado general sin signos de recurrencia del tumor.


Subject(s)
Adolescent , Female , Humans , Carcinoma, Papillary/pathology , Pancreatic Neoplasms/pathology , Carcinoma, Papillary/surgery , Pancreatic Neoplasms/surgery
3.
Article in Portuguese | LILACS-Express | LILACS, VETINDEX | ID: biblio-1456044

ABSTRACT

OBJECTIVE: The use of medicinal plants has increased worldwide. Therefore, it is necessary to know their possible effects in order to establish their correct use on human beings. Taking it into account, the objective of this study was to assess the effects of the aqueous extract of Hyptis pectinata leaves, popularly known as "sambacaitá" or "canudinho", on liver regeneration after partial hepatectomy in rats. METHODS: Ten rats were divided into 2 groups: HP group, which underwent 67% hepatectomy after 4 days of distilled water administration; and HP100 group, which was submitted to partial hepatectomy and oral administration of 100 mg/kg of the aqueous extract of Hyptis pectinata for the same period of time. All animals were sacrificed 24 hours after the surgical procedure. Liver regeneration was evaluated by immunohistochemical staining for proliferating cell nuclear antigen (PCNA) using the PC-10 monoclonal antibody. RESULTS: The hepatic regeneration index was significantly increased in HP100 group (p 0.05). CONCLUSIONS: The present study shows that the aqueous extract of Hyptis pectinata leaves can stimulate liver regeneration at 100 mg/kg.


OBJETIVO: O uso de plantas medicinais tem aumentado mundialmente. Então, é necessário saber seus possíveis efeitos a fim de estabelecer seu uso correto em seres humanos. Dessa forma, neste trabalho se propôs a estudar os efeitos do extrato aquoso das folhas da Hyptis pectinata, popularmente conhecida como "sambacaitá" ou "canudinho", sobre a regeneração hepática após hepatectomia parcial em ratos. MÉTODOS: Dez ratos foram divididos em 2 grupos: grupos HP, que foi submetido à hepatectomia de 67% após 4 dias de administração de água destilada; e o grupo HP100, que foi submetido à hepatectomia parcial e administração oral de 100 mg/kg do extrato aquoso da Hyptis pectinata pelo mesmo período de tempo. Todos os animais foram sacrificados 24 horas após o procedimento cirúrgico. A regeneração foi analisada através do método de imuno-histoquímica PCNA, usando o anticorpo monoclonal PC-10. RESULTADOS: O índice de regeneração hepática estava significativamente elevado no grupo HP100 (p 0,05). CONCLUSÕES: O presente estudo mostra que o extrato aquoso das folhas da Hyptis pectinata pode estimular a regeneração hepática na concentração de 100 mg/kg.

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