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Jiao W, Miyazaki K, Kitajima Y. Inverse correlation between E-cadherin and Snail expression in hepatocellular carcinoma cell lines in vitro and in vivo. Br J Cancer 2002; 86:98-101. [PMID: 11857019 PMCID: PMC2746537 DOI: 10.1038/sj.bjc.6600017] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2001] [Revised: 10/18/2001] [Accepted: 10/22/2001] [Indexed: 12/28/2022] Open
Abstract
Hepatocellular carcinoma is a well-known malignancy in the world. However, the molecular mechanism of carcinogenesis and tumour progression remains unclear. Recently, reduced E-cadherin expression due to transcriptional suppressor Snail was proven in a panel of epithelial and dedifferentiated cells derived from carcinomas of various etiologies. In the present study, we examined Snail and E-cadherin mRNA/protein expression in five hepatocellular carcinoma cell lines with variable phenotypes (HuL-1, Hep-G(2), Changliver, HLE, and HLF). The results demonstrated that the presence of Snail mRNA in HuL-1, Changliver, HLE and HLF cells detected by RT-PCR, which was further proven by in situ hybridization in tumours induced by HuL-1, Changliver, and HLF cells where Snail mRNA signals expressed in each of the sections. By contrast, E-cadherin mRNA and protein expression were only detected in Hep-G(2) cells by RT-PCR and Western blot, respectively. These results were also consistent with the data obtained from in vivo immunohistochemical staining where membranous expression of endogenous E-cadherin protein was revealed only in tumour sections induced by Hep-G(2) cells. Here we are the first to report that there is an inverse correlation between Snail and E-cadherin expression in HCC cells as well.
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Jiao W, Miyazaki K, Kitajima Y. Exogenous expression of E-cadherin in gallbladder carcinoma cell line G-415 restores its cellular polarity and differentiation. Int J Oncol 2001; 19:1099-107. [PMID: 11713577 DOI: 10.3892/ijo.19.6.1099] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
E-cadherin (E-cad) is critical for the development and maintenance of polarity and differentiation of epithelial cells. Our previous study revealed gallbladder (GB) cancer cell lines expressing E-cadherin could form cystic or spheroid-like structures in a 3-D matrix. This differentiated phenotype was disrupted by addition of anti-E-cad antibody. By extrapolation, we postulated that E-cad might directly regulate epithelial morphogenesis in GB carcinoma. In the present study, we introduced an expression plasmid harboring mouse E-cad cDNA (pBATEM2) into an undifferentiated GB cancer cell line (G-415) which did not express E-cad. We systemically compared differences including cell phenotype, morphogenesis, and ultrastructure between the parental G-415 cells (parental-cells) and E-cad transfected cells (E-cad-cells) under various conditions such as monolayer culture, 3-D gel culture as well as inoculation of nude mice. In contrast to parental-cells, E-cad-cells presented a typical epithelial shape with tight intercellular connections in monolayer culture. They developed round multicellular cystic structures in 3-D gel. The cysts secreted mucous substances via the apical surface into the cystic lumen, in which the substances were positively stained by alcian blue (pH 2.5). Ultrastructural sections of gel/xenograft tumor revealed re-establishment of adherens junctions and restoration of cell polarization. Immunohistochemical and immunofluorescent staining showed exogenous E-cad primarily accumulated at the extended cell-cell contact sites. Moreover, the membranous translocation of alpha-, and beta-catenin from cytoplasm was also found in 3-D matrix and xenograft tumor sections. Histopathologic examination revealed papillary adenocarcinoma features in the central region of the xenograft tumors. Our results demonstrate that exogenous expression of E-cad in undifferentiated GB cancer G-415 cells reverses differentiated characteristics in spatial growth conditions. Simultaneous translocation of alpha-, beta-catenin to membrane following functional E-cad expression may be a critical event for this process.
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Jiao W, Yakushiji H, Kitajima Y, Ogawa A, Miyazaki K. Establishment and characterization of human hilar bile duct carcinoma cell line and cell strain. JOURNAL OF HEPATO-BILIARY-PANCREATIC SURGERY 2001; 7:417-25. [PMID: 11180864 DOI: 10.1007/s005340070038] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2000] [Accepted: 05/15/2000] [Indexed: 12/14/2022]
Abstract
We established and characterized a human hilar bile duct carcinoma (HBDC) cell line from cells isolated from the ascites of a 75-year-old Japanese woman. Histopathological findings were confirmed to be poorly differentiated adenocarcinoma (pat BsrlCm according to the Japanese Society of Biliary Surgery General rules for surgical and pathological studies on cancer of the biliary tract, 4th edn.). Using a semi-agarose method, a daughter-cell strain was also established. Both the cell line and the strain were transplanted into scid or nude mice with a 100% inoculation rate. The population doubling times of the cell line and the strain were 32.25 and 35.78 h, respectively. The cell line and strain strongly expressed human epithelial antigen (HEA)-125 and cytokeratin (CK)-19 but did not express desmin and partly expressed vimentin. High values tumor markers (carbohydrate antigen [CA19-9], Span-1, KMO-1) were detected in culture supernatants from both the cell line and the cell strain and the concentrations paralleled the patient's serum data. DNA analysis revealed that the cell strain was diploid, whereas the cell line was aneuploid, with a DNA index (DI) of 0.85. Chromosomal analysis of the cell line and the strain revealed a range of numerical abnormalities (76-93 and 74-88, respectively) as well as structural abnormalities. The establishment of this HBDC cell line and strain may provide some benefit for fundamental biological research.
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Si Y, Wang P, Jiao W, Zhou R, Zhang Z, Deng Z, Chen Z, Tao Z. [The influence of IL-2 on the immunologic function of the NPC patients treated with radiotherapy and chemotherapy]. LIN CHUANG ER BI YAN HOU KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY 2001; 15:59-61. [PMID: 12541863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To investigate the combining therapy which not only have cured effect but also can uphold and improve the NPC patient's immunity function after radiotherapy and chemotherapy. METHOD 90 cases randomly divided into 3 groups 1. Local group (local injected with IL-2 + radiotherapy + chemotherapy); 2. General group (ivdrip with IL-2 + radiotherapy + chemotherapy); 3. Convention group (radiotherapy + chemotherapy). Checked and observed the immunity function around the immunotherapy and after the radiotherapy and chemotherapy. RESULT Cellular immunity of 3 groups are lower and humoral immunity are hypetuntion than normal person. After treated with IL-2 the cellular immunity improves but there's no great change of the humoral immunity. The immune status of the immune groups have not obvious change than before radiotherapy, at the same time, the cellular immunity of the convention group cut down and the humoral immunity doesn't change obviously. CONCLUSION 1. It has some effect to uphold and improve the NPC patient's immunity function to treat with small dosage of IL-2 before radiotherapy and chemotherapy, general treatment is better than local injection; 2. The three therapies have not great influence on the patient's humoral immunity.
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Chai JJ, Jiao W, Sun DY, Liang B, Shi JC, Fu C, Li X, Mao YD, Wang XL, Wang YC, Gao FH, Xiao SH. [Efficacy of ablendazole emulsion in treatment of 212 patients with cystic echinococcosis]. ZHONGGUO JI SHENG CHONG XUE YU JI SHENG CHONG BING ZA ZHI = CHINESE JOURNAL OF PARASITOLOGY & PARASITIC DISEASES 2001; 19:129-34. [PMID: 12571934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
OBJECTIVE To verify the efficacy of abendazole emulsion, a new formulation of abendazole, in treatment of human cystic echinococcosis. METHODS 212 patients with liver cystic echinococcosis were treated orally with albendazole emulsion at a daily dose of 10 mg/kg or 12.5 mg/kg for 3 to 12 months or over one year. The therapeutic efficacy was mainly evaluated by image feature examined with B ultrasound examination, a short-term efficacy at the completion of treatment and a long-term efficacy followed-up for 1-4 years. RESULTS In 212 patients treated with albendazole emulsion at a daily dose of 10 mg/kg and 12.5 mg/kg, the average cure rate, improved rate and the rate of no avail were 74.5%, 99.1% and 0.9% respectively after termination of the treatment, and the average long-term rates were 83.1%, 89.3% and 0.6% respectively. Recurrence occurred in 18 patients(10.2%). The results indicated that the best efficacy was seen in patients treated with albendazole 12.5 mg/kg daily for 9 months. Better response was also found when the recurrent patients were re-treated with albendazole. CONCLUSION The efficacy of albendazole emulsion on patients with liver cystic echinococcosis is much better than that of albendazole tablet or capsule and mebendazole. Meanwhile, the efficacy of albendazole emulsion is stable with less adverse effects. The results suggest that albendazole emulsion could be the drug of choice for treatment of cystic hydatid disease.
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Jiang F, Pan Z, Zhang L, Fang J, Jiao W, Yang B. [Combustion characteristics of municipal solid waste in fluidized bed]. HUAN JING KE XUE= HUANJING KEXUE 2001; 22:62-6. [PMID: 11382046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
For the experimental investigation on the combustion characteristics of Municipal Solid Waste(MSW) in Fluidized Bed, a lab scale Fluidized Bed facility was constructed. Single and mixed municipal solid waste burning in Fluidized Bed showed that dry waste can be burnt quickly at the bed temperature of 500 degrees C, and furnace temperature increased about 30-50 degrees C. Many kinds of combustion runs were conducted in this Fluidized Bed combustion facility. The parameters examined were air flow rate(from 5.5 m3/h to 7.5 m3/h), form of fuels(scrap or whole), moisture content and so on. Concentration of CO2, CO, SO2 and NOx in the flue gas were monitored and recorded every 5 seconds. The temperatures along the reactor were recorded every 10 seconds.
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Jiao W, Chai J, Osman I, Qu Q. [Characteristics of development and morphology of Echinococcus granulosus of camel origin in north Xinjiang]. ZHONGGUO JI SHENG CHONG XUE YU JI SHENG CHONG BING ZA ZHI = CHINESE JOURNAL OF PARASITOLOGY & PARASITIC DISEASES 1998; 16:204-8. [PMID: 12078243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
AIM To study the characteristics of development and morphology of E. granulosus of camel origin in north Xinjiang. METHODS Six dogs were infected with protoscolices and then purged with arecoline at days 35 and 45 p.i. RESULTS Six dogs were heavily infected, the worm burden were 14,780 to 135,900 at days 35 and 45 p.i. At day 35 p.i. 77% of the had developed three segments, 10% contained mature eggs with fully developed "thickshelled" embryophores. Morphological studies revealed the following characteristics for 35-day-old worms; the mean length of the terminal segment accounted for 56% of the total worm length; the position of the sexually mature segment was always terminal (77%); the female reproductive system possessed an enlongated ovary with compact lobules; the Mehlis gland was covered by the vitelline gland and the testes were distributed throughout the segment arranging in a row posterior to the vitelline gland. CONCLUSION The E. granulosus of camel isolate in north Xinjiang can readily be distinguished from the horse, sheep, cattle and pig strains, but is similar to the camel (Camelus dromedarius) strain distributed in North Africa.
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Zhang LH, Chai JJ, Jiao W, Osman Y, McManus DP. Mitochondrial genomic markers confirm the presence of the camel strain (G6 genotype) of Echinococcus granulosus in north-western China. Parasitology 1998; 116 ( Pt 1):29-33. [PMID: 9481771 DOI: 10.1017/s0031182097001881] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Twenty-eight isolates of E. granulosus, collected from humans at surgery, and a range of intermediate hosts, including sheep, cattle and camels from abattoirs in North and South Xinjiang Uygur Autonomous Region, People's Republic of China, were analysed for DNA sequence variation within regions of the mitochondrial cytochrome c oxidase I (COI) and NADH dehydrogenase subunit I (NDI) genes. The isolates were categorized into 2 distinct and uniform genotypic groupings, based on the sequences obtained, and the data clearly indicated that the camel/dog strain (G6 genotype) of E. granulosus as well as the cosmopolitan, common sheep strain (G1 genotype) occur in north Xinjiang. The presence of the camel strain has thus been confirmed in Xinjiang but it is evident from this and a previous molecular genetic survey of E. granulosus isolates from north-western China that the common sheep strain is the most predominant in the region. From the public health perspective, the majority of infected livestock will act as reservoirs of human infection there. During the course of the study, a polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) assay, based on the NDI sequence variation, was developed that allows rapid discrimination of the G1 and G6 genotypes.
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Shao L, Jiao W, Zhu X, Fan S. [Generation of suppressive protein after heavy physical stress in athletes]. ZHONGGUO YING YONG SHENG LI XUE ZA ZHI = ZHONGGUO YINGYONG SHENGLIXUE ZAZHI = CHINESE JOURNAL OF APPLIED PHYSIOLOGY 1997; 13:312-5. [PMID: 10322957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Our previous work showed that under the condition of restraint stress and the control of central nervous system, a suppressive protein (neuroimmune protein, NIP) was generated in peripheral lymph tissue and released into the blood stream, which acts as an immune suppressor. In the present study the serum from the athletes performed a heavy athletic training for 18 days was also able to suppress the lymphocyte proliferation of normal mice. The molecular weight at the suppressive factor in athlete serum determined by gel filtration HPLC was similar to that in mice and rats. In vitro experiment, the normal human lymphocytes were incubated with the serum from restraint stressed rats for 12 h and then the extract of human lymphocyte was made for testing the effect on normal lymphocyte proliferation. The result showed that it suppressed normal mouse lymphocyte proliferation. This result was similar to our previous experiment by using normal mouse lymphocyte incubated with the rat serum treated with restraint stress. It was also found that the serum and the extract of lymph node from restraint stressed mice suppressed human lymphocyte proliferation induced by PHA. The results suggest that suppressive protein induced by stress in mice and rats could also be induced in human beings and there is no distinct species specificity among them.
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Zhang P, Wei F, Jiao W, Yang Y. [Study on relationship of soluble interleukin-2 receptors in serious hepatitis B patients and the T lymphocyte subgroup]. ZHONGHUA SHI YAN HE LIN CHUANG BING DU XUE ZA ZHI = ZHONGHUA SHIYAN HE LINCHUANG BINGDUXUE ZAZHI = CHINESE JOURNAL OF EXPERIMENTAL AND CLINICAL VIROLOGY 1997; 11:47-9. [PMID: 15619904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
The assay of sIL-2R and T lymphocyte subgroup in 21 cases of serious HB patients revealed that serum sIL-2R in patients of acute and subacute or chronic serious HB was significantly higher than those in normal controls, P<0.001, but the CD4+ lymphocytes in all these patients obviously decreased and CD8+ lymphocytes notably increased when compared with that in normal group, P<0.01. The results showed that increasing of sIL-2R is associated with the activation of CD8+ cells which is mainly of cytotoxicity T lymphoeytes that play an important role in the pathogenesis of acute and subacute serious HB. The different expression of CD4+ and CD8+ in acute and chronic serious HB suggests a different pathogenetic mechanism between them.
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Xiao SH, Yang YQ, You JQ, Shen BG, Jiao W, Chai JJ. Effects of benzimidazole compounds on mice infected with secondary cysts of Echinococcus granulosus. Chin Med J (Engl) 1994; 107:521-32. [PMID: 7956500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The effects of mebendazole (Meb), albendazole (Alb) and albendazole sulfoxide (AlbSO) on metacestodes of Echinococcus granulosus have been studied. The results show that Meb and Alb exhibit less effect on protoscoleces in vitro, but in vivo the protoscolicidal effect of Meb is higher than that of Alb. Both Meb and Alb are efficacious in the treatment of mice infected with secondary cysts of E. granulosus. In terms of the minimal effective dose required, the occurrence of collapsed and shrunk cysts after treatment, the drug-induced damage on the germinal layer and the relationship between the drug content in the cyst wall and the damage of germinal layer, the effect of Meb on metacestodes of E. granulosus is higher than that of Alb. The results also indicated that lower drug absorption rate and thickening of the adventitia during longer disease course are the two major factors affecting the efficacy of Meb and Alb, hence suggesting that increase of Meb absorption may be expected to raise the therapeutic effect of the drug. Finally, Alb is not only metabolized to AlbSo and AlbSP in vivo, but also metabolized by the cysts exposed to Alb in vitro. Experimental chemotherapy showed that AlbSO is the major effective metabolite of Alb, and its curative dose is only one half of the parent compound.
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Jiao W, Zhang YL, Cai R. [Isolation, purification and the characteristics of 70 KD pronucleation glycoprotein in the bile]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1994; 32:271-4. [PMID: 7842940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In recent years, the great achievement in the etiology of cholelithiasis is the discovery of pro- and anti-nucleating factors in human bile. Using Con-A affinity chromatography combined with Sephadex G-200 molecular sieve technique, we have isolated and purified a strong pronucleating glycoprotein in gallbladder bile. Its molecular weight is 70KD, the quantity ratio of neutral hexose to protein in this glycoprotein is 15.88%. One molecule has about 640 amino acid residues. Its N-terminal amino acid sequence is N-Ser-His-Gly-Met-Arg-Gln-Tyr-Tyr-Met-Lys. The pathogenic and biological significance of this glycoprotein in the pathogenesis of gallstone were discussed.
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Xiao SH, Feng JJ, Guo HF, Jiao PY, Yao MY, Jiao W. Effects of mebendazole, albendazole, and praziquantel on fumarate hydratase, pyruvate kinase, and phosphoenolpyruvate carboxykinase of Echinococcus granulosus cyst wall harbored in mice. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1994; 15:69-72. [PMID: 8010090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Echinococcus granulosus cyst wall exhibited activities of fumarate hydratase (FH), pyruvate kinase (PK), and phosphoenolpyruvate carboxykinase (PEPCK) with 911-1433, 151-215, and 54-98U, respectively. The ratio of PK/PEPCK was 2.2-2.7, indicating that glycolysis is the main pathway of carbohydrate metabolism in the cyst wall. When infected mice were treated ig with mebendazole, albendazole or praziquantel at the respective daily dose of 25-50, 300, and 500 mg.kg-1 for 7-14 d, no apparent change of FH activity in the cyst wall was found, while PK and PEPCK activities in the cyst wall were markedly inhibited by mebendazole and albendazole. The inhibition rates of PK and PEPCK activities in mebendazole group were 85-88% and 90-92%, respectively, while in albendazole group were 55.3 and 71.6%, respectively. The results suggest that PK or PEPCK in the cyst wall may the important site attacked by effective anti-hydatid drugs.
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Xiao SH, Feng JJ, Guo HF, Jiao PY, Yao MY, Jiao W. Effects of mebendazole, albendazole, and praziquantel on succinate dehydrogenase, fumarate reductase, and malate dehydrogenase in Echinococcus granulosus cysts harbored in mice. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1993; 14:151-154. [PMID: 8352009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Echinococcus granulosus cyst wall possess high biochemical activities of malate dehydrogenase (MD) and fumarate reductase (FR), but low activity of succinate dehydrogenase (SD), suggesting that the cyst wall may utilize a partial reverse tricarboxylic acid cycle. When infected mice were given intragastrically with mebendazole, 25-50 mg.kg-1.d-1, albendazole 300 mg.kg-1.d-1 or praziquantel 500 mg.kg-1.d-1 for 7-14 d, no apparent effects on SD and FR activities of the cyst wall were found, while the MD activity was suppressed by all the 3 drugs, the inhibition rates being 34.6-61.6%, 59.8%, and 50.6%, respectively. The results suggested that MD may not be an important target for the antihydatidosis drugs.
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Chen W, Lee Y, Wang H, Yu GG, Jiao W, Zhou W, Zeng Y. Suppression of human nasopharyngeal carcinoma cell growth in nude mice by the wild-type p53 gene. J Cancer Res Clin Oncol 1992; 119:46-8. [PMID: 1400565 DOI: 10.1007/bf01209487] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Wild-type and mutant human p53 genes were transfected into the nasopharyngeal carcinoma (NPC) cell line CNE-3. Tumorigenicity in nude mice showed that the tumor resulting from the cells transfected with the wild-type p53 gene grew more slowly and was smaller than that from the cells transfected with mutant p53 gene and that from control CNE-3 cells. In contrast, the tumor from the cells transfected with the mutant p53 gene grew faster than that produced by cells transfected with the wild-type p53 gene and that produced by control CNE-3 cells. The results demonstrate that the wild-type p53 gene could inhibit the NPC cell growth in nude mice and the mutant p53 gene could enhance the NPC cell growth in nude mice. The p53 gene may also play an important role in the pathogenesis of NPC.
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Xiao SH, Yang YQ, Guo HF, Zhang CW, Jiao PY, You JQ, Jiao W. [Effect of mebendazole, albendazole and albendazole sulfoxide on glycogen contents of Echinococcus granulosus cysts in infected mice]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1990; 11:546-9. [PMID: 2130620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Mice infected with protoscoleces of Echinococcus granulosus for 8-9 months were treated ig with mebendazole (Meb) 50 mg.kg-1.d-1, albendazole (Alb) 300 mg.kg-1.d-1 or albendazole sulfoxide (AlbSO) 150 mg.kg-1.d-1 for 1-7 d. The glycogen contents of cyst wall in each drug groups were 1.0 +/- 0.6 - 1.8 +/- 0.9 mg/g, 1.1 +/- 0.9 - 1.8 +/- 0.8 mg/g and 0.8 +/- 0.5 - 1.5 +/- 0.9 mg/g, respectively, which were less than those 2.2 +/- 1.3 - 2.8 +/- 1.3 mg/g of corresponding control groups with respective glycogen reduction rates of 38-55%, 36-51% and 46-62%. After prolongation of treatment course to 10-14 d, the glycogen contents of cyst wall in Meb and AlbSO groups were further decreased, which resulted in glycogen reduction rates of 73% and 69%, respectively. No further decrease of glycogen contents in Alb groups was seen as the glycogen reduction rates sustained in 32%. Histochemical observation showed that the glycogen contents in germinal layer of the cysts decreased significantly or even disappeared during the treatment of Meb, Alb or AlbSO. The results suggested that the effects of Meb and AlbSO on mice infected with secondary cysts of E granulosus were superior to Alb as evaluated by glycogen reduction rate of cyst wall.
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