排序方式: 共有45条查询结果,搜索用时 15 毫秒
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Amornrat Juasook Thidarut Boonmars Zhiliang Wu Watcharin Loilome Kulathida Veteewuthacharn Nissana Namwat Pakkayanee Sudsarn Orasa Wonkchalee Pranee Sriraj Ratchadawan Aukkanimart 《Pathology oncology research : POR》2013,19(1):55-62
Chronic infection with Opisthorchis viverrini for many years has been associated with the development of hepatobiliary diseases including cholangiocarcinoma. It is well known that inflammation is a key component of the tumor microenvironment, and that chronic inflammation plays an important role in tumorigenesis. Therefore, in this study cholangiocarcinogenesis was induced in Syrian hamsters in order to observe the cancer-related inflammation. The Syrian hamsters were divided into 5 groups: uninfected controls; normal Syrian hamsters infected with O. viverrini (OV); immunosuppressed Syrian hamsters infected with O. viverrini (OVis); normal Syrian hamsters infected with O. viverrini and administered N-nitrosodimethylamine (CCA); and immunosuppressed Syrian hamsters infected with O. viverrini and administered N-nitrosodimethylamine (CCAis). Syrian hamster livers were later observed for gross pathology and histopathological changes; COX2 was analyzed by immunohistochemical staining. We found a decreased number of inflammatory cells surrounding the hepatic bile duct in the OVis group, but not in the OV and CCAis groups. However, in the CCAis group (with suppressed immunity) early appearance and greater severity of cholangiocarcinoma were observed; gross pathological examination revealed many cancer nodularities on the liver surface, and histopathological studies showed the presence of cancer cells, findings which correlated with the predominant expression of COX2. The present study suggests that host immune responses are intended to ameliorate pathology, and they are also crucially associated with pathogenesis in O. viverrini infection; the unbalancing of host immunity may enhance cancer-related inflammation. 相似文献
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Sirintip Boonjaraspinyo Thidarut Boonmars Chantana Aromdee Anucha Puapairoj Zhiliang Wu 《Parasitology research》2011,108(1):7-14
The present study revealed the indirect effect of a turmeric (TUR) diet on the histopathological changes and proliferating
cell nuclear antigen staining in Syrian hamsters with partial obstruction by liver fluke (Opisthorchis viverrini) infection and inflammation by N-nitrosodimethylamine (NDMA) administration. The result of the analysis of histopathological changes shows that a TUR diet
has an anti-inflammatory property in the case of a single condition of NDMA administration or O. viverrini infection, as has been reported previously. Unfortunately, an adverse indirect effect of TUR was observed in the combination
of infection with O. viverrini and administration of NDMA, with a 30–50% increase in new bile duct formation, correlated with an increase in proliferating
cell nuclear antigen. Our present result suggests that the properties of curcumin are anti-inflammation and antioxidant including
enhancing biliary contraction and bile flow. Thus, a combination of factors (treated with O. viverrini, NDMA, and TUR diet) result in an increasing bile duct proliferation which may cause from biliary homeostasis. 相似文献
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Extracts of Cardiospermum halicacabum, medicinal plant, were tested in vitro for their effectiveness against third-stage larvae of Strongyloidesstercoralis. Third-stage larvae of S. stercoralis were isolated from cultures of dogs feces using agar plate culture method. The larvae (1,000 larvae/ml), suspended in phosphate buffer saline solution, pH 7.4, were exposed to aqueous and alcohol extracts (2,000 g/ml) of C. halicacabum at 37°C with 5% CO2. Ivermectin (250 g/ml) and piperazine (2,000 g/ml) were also used as the reference drugs. The survival of Strongyloides larvae based on its motility was determined daily for 7 days. Strongyloides larvae were viable after contact with ivermectin, piperazine and C. halicacabum (aqueous and alcohol) solutions, but most of them were immobilized, after exposure to aqueous and alcohol extracts of C. halicacabum within 72 and 48 h, respectively, while ivermectin took from 72 to144 h, and piperazine more than 7 days, to achieve the same rate of nonmotility. Clearly, the viability of S. stercoralis larvae was significantly reduced when exposed to extracts of C. halicacabum. Further study is needed on the antiparasitic activity of aqueous and alcohol extracts of C. halicacabum against S. stercoralis. 相似文献
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Nadda Kiatsopit Paiboon Sithithaworn Jiraporn Sithithaworn Thidarut Boonmars Smarn Tesana Opal Pitaksakulrat Weerachai Saijuntha Trevor N. Petney Ross H. Andrews 《Parasitology research》2011,108(1):211-217
Recent systematic studies of Opisthorchis viverrini based on multilocus enzyme electrophoresis (MEE) have shown that there are at least five genetic groups and possibly two
cryptic species occurring in Thailand and Lao PDR each associated with a specific wetland system. A study based on mitochondrial
DNA (mtDNA) gene analyses of an O. viverrini population from Savannakhet (SV, Lao PDR) clustered with several isolates from Thailand and Lao PDR although they originated
from different river wetland systems. We used MEE to re-examine whether O. viverrini from SV was similar genetically to isolates from Thailand and Lao PDR. The allelic profiles of O. viverrini from SV and five different wetlands representing defined genetic groups of O. viverrini were recorded at 24 enzyme loci as opposed to only two loci of mtDNA. Contrary to previous studies, O. viverrini from SV was found to have fixed genetic differences at six to eight of the 24 loci examined (24.50–35.42%). Allelic data
indicated that O. viverrini from SV differed from isolates in the Nam Ngum River wetland in Lao PDR (29.33% fixed genetic differences) and clustered
with O. viverrini from Nakhon Phanom and Sakon Nakhon within the Songkram River wetland in Thailand but had fixed genetic differences from
these at 24.5% of loci examined. Our data confirm the association between genetic groups of O. viverrini and specific wetland systems, and raise important questions regarding the significance of the genetic differences and relationships
of O. viverrini from these wetlands. 相似文献
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Thidarut Boonmars Zhiliang Wu Sirintip Boonjaruspinyo Somchai Pinlaor Isao Nagano Yuzo Takahashi Butsara Kaewsamut Puangrat Yongvanit 《Parasitology research》2009,105(5):1273-1281
Opisthorchiasis has the significant relationship with the high prevalence of cholangiocarcinoma (CCA; a bile duct cancer) in the endemic areas in Southeast Asia. To reveal the molecular mechanism of the tumorigenesis induced by Opisthorchis viverrini infection, the present study investigated the kinetic expression of RB pathway genes, including RB1, p16INK4, cyclin D1, and CDK4, during the development of opisthorchiasis-associated CCA in hamster model. The results of quantitative real-time polymerase chain reaction indicated that the expressions of RB1 and p16INK4 were down-regulated during the development of CCA induced by infection plus N-nitrosodimethylamine treatment in a time-dependent manner. On the other hand, the expressions of cyclin D1 and CDK4 were up-regulated. The expression kinetics was corresponding to the pathological progression of the opisthorchiasis-associated CCA, revealed by histopathological observation. Moreover, the analysis of the expression of these genes in human opisthorchiasis-associated CCA cases showed the decreased expression of RB1 and p16INK4 in 50% and 82.7% cases and overexpression of cyclin D1 and CDK4 in half cases, respectively. The results suggested that RB pathway is likely involved in the tumorigenesis of opisthorchiasis-induced CCA and proposed the potential application of some of these genes as biomarkers in predispose and molecular therapy of the parasite-associated cancer. 相似文献
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Thongseesuksai Thaksaporn Wongwai Phanthipha Boonmars Thidarut Sanpool Oranuch Laummaunwai Porntip 《International ophthalmology》2020,40(2):361-368
International Ophthalmology - To evaluate the in vitro efficacy of three commercial ophthalmic solutions (gatifloxacin, levofloxacin and gentamicin) against cysts of Acanthamoeba species.... 相似文献
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