In Vitro Effects of SB202190 on Echinococcus granulosus

Spillage of cyst contents during surgical operation is the major cause of recurrence after hydatid cyst surgery. Instillation of a scolicidal agent into a hepatic hydatid cyst is the most commonly employed measure to prevent this complication. SB202190 is a pyridinyl imidazole derivative and is known to be a specific inhibitor of p38 MAPK. In the present study, the scolicidal effect of SB202190 was investigated. Freshly isolated Echinococcus granulosus protoscolices were subjected to SB202190 treatment (10, 20, 40, and 80 microM), and the effects on parasite viability were monitored by trypan blue staining. Corresponding effects were visualized by scanning and transmission electron microscopy. Dose-dependent protoscolex death within a few days of SB202190 treatment was observed. Although the in vitro scolicidal effect of SB202190 was satisfactory, the in vivo efficacy of this drug and also possible side effects remain to be further investigated.

Treatment of complicated hepatic cystic hydatidosis with intrabiliary rupture by pericystectomy in combination with Roux-en-Y hepaticojejunostomy / 华中科技大学学报（医学）（英德文版）

This study retrospectively reviewed 9 cases of complicated hepatic cystic hydatidosis with intrabiliary rupture who were surgically treated with pericystectomy in combination with Roux-en-Y hepaticojejunostomy in our hospital from 2004 to 2010. The clinical features, results of laboratory tests, B-mode ultrasonography and CT, post-operative recovery, days of hospital stay after the operation and post-operative complications were statistically analyzed and the patients were followed up. The subjects in our series included 7 males and 2 females, whose average age was 50.78±7.58 years. Before operation, 9 patients suffered from pain of the right upper quadrant and jaundice, which, in 4 cases (44.45%), were accompanied with fever and chills. Preoperative B-mode ultrosonography and CT showed that all the 9 patients had single hydatid cyst, with their diameter being 9.33±1.58 cm on average. The lesions involved segments V, VI in 6 cases, and segment IV in 3 cases. By WHO classification, 7 cases were classified as CE3 and 2 cases as CE4. They all had choledochectasia. The subjects underwent the surgery uneventfully. Intraoperatively, 2-4 biliary fistula orifices were found, with the average of the orifice being (0.79±0.20) cm. After the operation, one patient developed incision infection, one had pulmonary infection and one suffered from reflux cholangitis. No anastomotic leaks or peri-operative deaths took place and follow-up revealed no recurrence and implantative metastasis. We are led to conclude that pericystectomy in combination with Roux-en-Y hepaticojejunostomy can achieve satisfactory results for the treatment of complicated hepatic cystic hydatidosis with intrabiliary rupture.

Research Progress on the Immunity of Hepatic Echinococcosis in Human / 中国寄生虫学与寄生虫病杂志

This article reviews immunological research progress in cystic echinococcosis:the immunity to Echinoco-ccus granulosus infection,innate resistance,immune evasion mechanism.A better understanding for the immunology in human echinococcosis may help develop therapeutic and preventive agents.