Experimental study on intervention effect of Grifola frondosa on nonalcoholic steatohepatitis / 中国中药杂志

To study the preventive effect of Grifola frondosa on nonalcoholic steatohepatitis (NASH). The rat model of NASH was established by feeding high-fat diets for 12 weeks and intervened with 0.5 g · kg(-1) · d(-1) and 1.0 g · kg(-1) · d(-1) of C. frondosa powder suspensions. The degrees of hepatocyte fatty degeneration and inflammation were observed under the optical microscope with routine HE staining. The NAFLD activity scores (NAS) were calculated. Serum ALT, AST and hepatic TG and CHOL were tested by the biochemical method. The hepatic MDA was examined by thiobarbituric acid method. The hepatic SOD was tested by the xanthine oxidase test. The hepatic GSH-PX activity was determined by the dithio-nitrobenzoic acid method. Hepatic TNF-α and IL-6 were detected by the enzyme-linked immunosorbent assay (ELISA). The NASH model group induced by high-fat diets showed higher hepatic NAS, ser- um ALT, AST, CHOL and hepatic TG, CHOL, MDA, TNF-α, IL-6 (P < 0.01 or P < 0.05) and lower serum TG and hepatic SOD, GSH-PX (P < 0.01, P < 0.05) than the normal control group. After being intervened with different doses of G. frondosa, the NASH group revealed significantly lower hepatic NAS, serum ALT and hepatic TG, CHOL, MDA, TNF-α and IL-6 (P < 0.05) and higher hepatic SOD, GSH-PX (P < 0.05) than the model group. G. frondosa may prevent the further development of NASH by improving the disorder of lipid metabolism in rats with NASH induced by high-fat diets, relieving the level of oxidative stress and reducing the generation of inflammatory cytokines.

Evaluation of the treatment of II and III degree hemorrhoids: a comparison of mucosa suspension procedure for prolapse and hemorrhoids, Shenyang city, China, 2006-2009 / Comparación de técnicas quirúrgicas para el tratamiento de las hemorroides grado II-III, Shenyang, China,2006-2009

Objective: The aim of this study was to evaluate the effect of mucosa suspension procedure (MSP) by comparing procedure for prolapse and hemorrhoids (PPH). Methods: We compared the safety, clinical outcome, and cost between PPH and MSP for the surgical treatment of hemorrhoidal disease. A total of 80 patients with II and III degree hemorrhoids were included in the study. MSP group (n=40) and PPH group (n=40) were applied at random. Results: Both MSP and PPH are safe surgical treatments for patients with II and III degree hemorrhoids. Complications of the patients, such as persistent pain and tenesmus in the MSP group were less than the PPH group. Moreover, MSP had lower costs. Conclusion: MSP is a safe, effective, and inexpensive procedure for patients with hemorrhoidal disease. We consider that this technique should be widely used.

Objetivo: El objetivo del estudio fue comparar la seguridad, los resultados clínicos y el costo entre el procedimiento quirúrgico de suspensión de la mucosa y el manejo quirúrgico del prolapso para el tratamiento de las hemorroides. Métodos: Se incluyeron en el estudio 80 pacientes quienes presentaban hemorroides sintomáticas grado II y III; 40 (50%) recibieron como tratamiento el procedimiento quirúrgico de suspensión de la mucosa y 40 (50%) recibieron el manejo quirúrgico del prolapso. Resultados: Ambos tratamientos quirúrgicos fueron eficientes y seguros observando una menor proporción de persistencia del dolor y tenesmo con el procedimiento quirúrgico de suspensión de la mucosa con costos más bajos para este tipo de cirugía. Conclusión: La suspensión de la mucosa es un procedimiento eficaz, seguro y de bajo costo para los pacientes con enfermedad hemorroidal. Esta técnica debería usarse más ampliamente.

Induction of biliary cholangiocarcinoma cell apoptosis by 103Pd cholangial radioactive stent gamma-rays / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>In recent years, interventional tumor therapy, involving implantation of intra-cholangial metal stents through percutaneous trans-hepatic punctures, has provided a new method for treating cholangiocarcinoma. (103)Pd cholangial radioactive stents can concentrate high radioactive dosages into the malignant tumors and kill tumor cells effectively, in order to prevent re-stenosis of the lumen caused by a relapsed tumor. The aim of the present study was to investigate the efficacy of gamma-rays released by the (103)Pd biliary duct radioactive stent in treating cholangiocarcinoma via induction of biliary cholangiocarcinoma cell apoptosis.</p><p><b>METHODS</b>A group of biliary duct cancer cells was collectively treated with a dose of gamma-rays. Cells were then examined by the 3-(4, 5-dimethyl thiazol-2-yl)-2, 5-diphenyl terazolium-bromide (MTT) technique for determining the inhibition rate of the biliary duct cancer cells, as well as with other methods including electron microscopy, DNA agarose gel electrophoresis, and flow cytometry were applied for the evaluation of their morphological and biochemical characteristics. The growth curve and the growth inhibition rate of the cells were determined, and the changes in the ultrastructure of the cholangiocarcinoma cells and the DNA electrophoresis bands were examined under a UV-lamp.</p><p><b>RESULTS</b>The gamma-ray released by (103)Pd inhibited cholangiocarcinoma cell growth, as demonstrated when the growth rate of the cells was stunned by a gamma-ray with a dosage larger than 197.321 MBq. Typical features of cholangiocarcinoma cell apoptosis were observed in the 197.321 MBq dosage group, while cell necrosis was observed when irradiated by a dosage above 245.865 MBq. DNA agarose gel electrophoresis results were different between the 197.321 MBq irradiation dosage group, the 245.865 MBq irradiation dosage group, and the control group.</p><p><b>CONCLUSIONS</b>(103)Pd radioactive stents which provide a radioactive dosage of 197.321 MBq are effective in the treatment of cholangiocarcinoma; (103)Pd radioactive stents should be useful for the clinical treatment of cholangiocarcinoma.</p>

Intrabiliary radiation inhibits smooth muscle formation and biliary duct remodelling after balloon overstretching injury in dogs / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Internal metallic stents have been widely used in clinical practice, but a high postoperative restenosis rate limits its application. The purpose of this study was to determine the effect of intrabiliary radiation on muscle formation and biliary duct remodeling after biliary duct balloon injury in dogs.</p><p><b>METHODS</b>Twenty male dogs (15 - 20 kg) were randomly divided into treatment group (n = 10) and control group (n = 10). Balloon overstretching injury was induced using a balloon catheter placed across the biliary duct. Subsequently, a 103Pd radioactive stent was positioned at the target site in each animal in the treatment group, providing the injured biliary duct with a radiation dose of 12.58 x 10(7) Bq. Dogs in the control group received Ni-Ti stents. All the dogs were killed one month after initial injury. The injured sections were dissected free from the dogs, and were processed for histological and morphological study. Cross-sections were stained with hematoxylin-eosin, Masson's trichrome, and Verhoef-van Giesen. Muscle formation area and lumen area were determined using a computer-assisted image analysis system.</p><p><b>RESULTS</b>Compared with the control group, 103Pd radioactive stents significantly reduced muscle formation area (78.3%, P < 0.01), and percentage area of stenosis [control stents: (60.0 +/- 21.6)%, 103Pd radioactive stents: (31.6 +/- 9.5)%]. In addition, in the treatment group, the biliary duct lumen area was significantly larger than that in the control group (P < 0.01).</p><p><b>CONCLUSIONS</b>103Pd radioactive stents providing a radioactive dose of 12.58 x 10(7) Bq are effective in reducing muscle formation and biliary duct remodeling after balloon overstretching injury.</p>

Expression and significance of caspase-3 gene in apoptotic muscle cells 103Pd radioactive stent bile duct in dogs / 中华外科杂志

<p><b>OBJECTIVE</b>To discuss the expression and significance of caspase-3 gene in the apoptotic muscle cells in gamma-radiation-induced muscle cell lines.</p><p><b>METHODS</b>The caspase-3 mRNA in the control and gamma-radiation induced apoptotic muscle cells was analysed by RT-PCR.</p><p><b>RESULTS</b>The expression of caspase-3 gene transcript was higher in 103Pd radioactive stent dog bile duct than in general stent dog bile duct, and apoptotic muscle cells were higher in 103Pd radioactive stent dog bile duct than in general stent dog bile duct.</p><p><b>CONCLUSIONS</b>The high level expression of caspase-3 gene may help to understand the muscle cells sensitivity to gamma-radiation apoptosis. 103Pd radioactive stent may increase the expression of caspase-3 gene in dog bile duct and prevent the billiary narrow when dog bile duct was injured by balloon.</p>