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1.
Jung JA Jhang E. John Staba Jung Yun Kim 《In vitro cellular & developmental biology. Plant》1974,9(4):253-259
Summary Roots, stems, or leaves of American (Panax quinquefolium) and Korean (Panax ginsing) ginseng were grown as callus or supension tissue cultures. Tissue cultures ofP. ginseng would occasionally form plantlets. The fundamental chemical composition, inorganic analysis, and saponin (panaquilin) content
of American and Korean ginseng plants and tissue cultures were determined. The crude saponin content is very similar to, but
approximately one-half (1.3%, fresh weight) of that present in ginseng roots. Two-dimensional thin layer chromatographic analysis
revealed minor differences in the panaquilins present in American and Korean ginseng tissue cultures. The sapogenin, panaxadiol,
was isolated from Korean ginseng callus. 相似文献
2.
Shu-Ping Wu Chuan-Chin Huang Chi-Li Tsai Te-En Lin Jhih-Jia Jhang Sheng-Hai Wu 《ZooKeys》2016,(557):121-153
Two new species of rhacophorid tree frog were identified in Taiwan. In both new taxa, derived reproductive characteristics of laying eggs in tree holes and oophagous tadpoles are shared with Kurixalus
eiffingeri, but they are divergent from each other in molecular genetics, mating calls, and tadpole and adult morphology. The morphological characteristics and the molecular phylogenetic evidence support the hypothesis that the two new species, Kurixalus
berylliniris
sp. n. and Kurixalus
wangi
sp. n., are both monophyletic lineages. 相似文献
3.
4.
Jhang Ho Pak Jimin Shin In-Sung Song Sungbo Shim Sung-Wuk Jang 《International journal for parasitology》2017,47(1):51-59
Matrix metalloproteinase-9 plays an important role in the invasion and metastasis of various types of cancer cells. We have previously reported that excretory–secretory products from Clonorchis sinensis increases matrix metalloproteinase-9 expression. However, the regulatory mechanisms through which matrix metalloproteinase-9 expression affects cholangiocarcinoma development remain unclear. In the current study, we examined the potential role of excretory–secretory products in regulating the migration and invasion of various cholangiocarcinoma cell lines. We demonstrated that excretory–secretory products significantly induced matrix metalloproteinase-9 expression and activity in a concentration-dependent manner. Reporter gene and chromatin immunoprecipitation assays showed that excretory–secretory products induced matrix metalloproteinase-9 expression by enhancing the activity of nuclear factor-kappa B. Moreover, excretory–secretory products induced the degradation and phosphorylation of IκBα and stimulated nuclear factor-kappa B p65 nuclear translocation, which was regulated by extracellular signal-regulated kinase 1/2. Taken together, our findings indicated that the excretory–secretory product-dependent enhancement of matrix metalloproteinase-9 activity and subsequent induction of IκBα and nuclear factor-kappa B activities may contribute to the progression of cholangiocarcinoma. 相似文献
5.
Jhang Ho Pak Ju Hyun Moon Seung‐Jun Hwang Shin‐Hyeong Cho Sang‐Beom Seo Tong‐Soo Kim 《Journal of cellular biochemistry》2009,108(6):1376-1388
Severe Clonorchis sinensis infection is a significant risk factor for malignant changes in bile ducts and surrounding liver tissues occurring as a result of direct contact with C. sinensis worms and their excretory–secretory products (ESP). However, the intrinsic molecular mechanisms involved in these processes remain obscure. To determine the effects of C. sinensis infection on protein expression in host bile duct epithelium, we examined proteomic profile changes in the human cholangiocarcinoma cell line (HuCCT1) treated with ESP at 24 h. Using a combination of 2‐DE, quantitative image and MALDI‐TOF MS analysis, we identified 83 proteins that were translationally modulated in response to ESP, among which 49 were up‐regulated and 34 down‐regulated. These proteins were classified under various biological categories, including metabolism, cell structure and architecture, proteolysis, protein modification, transport, signal transduction, and reactive oxygen species (ROS) detoxification. In particular, ESP induced the expression of redox‐regulating proteins, including peroxiredoxins (Prdx 2, 3, and 6) and thioredoxin 1 (Trx 1), possibly via intracellular ROS generation. Application of the proteomic approach to identify ESP response proteins should be a prerequisite before further investigation to clarify the molecular pathways and mechanisms involved in C. sinensis infection of host cells. J. Cell. Biochem. 108: 1376–1388, 2009. © 2009 Wiley‐Liss, Inc. 相似文献
6.
Numerous experimental and epidemiological studies have demonstrated a correlation between Clonorchis sinensis (C. sinensis) infestation and cholangiocarcinoma (CCA). However, the role of C. sinensis in the increased invasiveness and proliferation involved in the malignancy of CCA has not been addressed yet. Here, we investigated the possibility that C. sinensis infestation promotes expression of focal and cell-cell adhesion proteins in CCA cells and secretion of matrix metalloproteinases (MMPs). Adhesion proteins help maintain cell aggregates, and MMPs promote the three-dimensional invasion of cells into the neighboring extracellular matrix (ECM). Using a novel microfluidic assay, we quantitatively addressed the role of excretory-secretory products (ESPs) gradients from C. sinensis in promoting the invasion of cells into the neighboring ECM. 相似文献
7.
Cheng-Ming Tsao Jhih-Gang Jhang Shiu-Jen Chen Shuk-Man Ka Tao-Cheng Wu Wen-Jinn Liaw Hsieh-Chou Huang Chin-Chen Wu 《PloS one》2014,9(9)
Selegiline, an anti-Parkinson drug, has antioxidant and anti-apoptotic effects. To explore the effect of selegiline on sepsis, we used a clinically relevant animal model of polymicrobial sepsis. Cecal ligation and puncture (CLP) or sham operation was performed in male rats under anesthesia. Three hours after surgery, animals were randomized to receive intravenously selegiline (3 mg/kg) or an equivalent volume of saline. The administration of CLP rats with selegiline (i) increased arterial blood pressure and vascular responsiveness to norepinephrine, (ii) reduced plasma liver and kidney dysfunction, (iii) attenuated metabolic acidosis, (iv) decreased neutrophil infiltration in liver and lung, and (v) improved survival rate (from 44% to 65%), compared to those in the CLP alone rats. The CLP-induced increases of plasma interleukin-6, organ superoxide levels, and liver inducible nitric oxide synthase and caspase-3 expressions were ameliorated by selegiline treatment. In addition, the histological changes in liver and lung were significantly attenuated in the selegiline -treated CLP group compared to those in the CLP group. The improvement of organ dysfunction and survival through reducing inflammation, oxidative stress and apoptosis in peritonitis-induced sepsis by selegiline has potential as an adjuvant agent for critical ill. 相似文献
8.
Objectives
To revisit the diagnostic roles of cystoscopic hydrodistention and the potassium sensitivity test (PST) for the diagnosis of interstitial cystitis (IC).Methods
We prospectively enrolled 214 patients clinically diagnosed with IC, 125 non-IC patients who underwent video urodynamic studies and PST, and another 144 non-IC patients who underwent cystoscopic hydrodistention before transurethral surgery. The sensitivity, specificity, and positive and negative predictive values were calculated for the PST and glomerulations after cystoscopic hydrodistention.Results
After cystoscopic hydrodistention, glomerulations developed in 211/214 (98.6%) IC patients and 61/144 (42.4%) of the non-IC patients including patients with stones (45/67, 67%), hematuria (2/5, 40%), and stress urinary incontinence (SUI) (6/17, 35%). When positive glomerulation was defined as grade 2 or more, the sensitivity was 61.7%. The PST was positive in 183/214 (85.5%) IC patients and 7/17 (41%) with hypersensitive bladder, 7/32 (22%) with detrusor overactivity, 5/27 (18%) with SUI, 2/21 (10%) with lower urinary tract symptoms, and 2/25 (8%) with bladder outlet obstruction. The PST had a sensitivity of 85.5% and a specificity of 81.6% for diagnosis of IC. IC patients with a positive PST had a significantly smaller urgency sensation capacity, smaller voided volume, and greater bladder pain score.Conclusions
Both the PST and glomerulations after hydrodistention are sensitive indicators of IC, but the specificity of glomerulations in the diagnosis of IC is lower than that of the PST. A positive PST is associated with a more hypersensitive bladder and bladder pain, but not the grade of glomerulations in IC patients. Neither test provided 100% diagnostic accuracy for IC, we might select patients into different subgroups based on different PST and hydrodistention results, not for making a diagnosis of IC but for guidance of different treatments. 相似文献9.
10.
Nam JH Moon JH Kim IK Lee MR Hong SJ Ahn JH Chung JW Pak JH 《International journal for parasitology》2012,42(1):103-113
Chronic clonorchiasis, caused by direct and continuous contact with Clonorchis sinensis worms and their excretory-secretory products, is associated with hepatobiliary damage, inflammation, periductal fibrosis and even development of cholangiocarcinoma. Our previous report revealed that intracellular reactive oxygen species were generated in C. sinensis excretory-secretory product-treated human cholangiocarcinoma cells; however, their endogenous sources and pathophysiological roles in host cells were not determined. In the present study, we found that treatment of human cholangiocarcinoma cells with excretory-secretory products triggered increases in free radicals via a time-dependent activation of NADPH oxidase, xanthine oxidase and inducible nitric oxide synthase. This increase in free radicals substantially promoted the degradation of cytosolic IκB-α, nuclear translocation of nuclear factor-κB subunits (RelA and p50), and increased κB consensus DNA-binding activity. Excretory-secretory product-induced nuclear factor-κB activation was markedly attenuated by preincubation with specific inhibitors of each free radical-producing enzyme or the antioxidant, N-acetylcysteine. Moreover, excretory-secretory products induced an increase in the mRNA and protein expression of the proinflammatory cytokines, IL-1β and IL-6, in an nuclear factor-κB-dependent manner, indicating that enzymatic production of free radicals in ESP-treated cells participates in nuclear factor-κB-mediated inflammation. These findings provide new insights into the pathophysiological role of C. sinensis excretory-secretory products in host chronic inflammatory processes, which are initial events in hepatobiliary diseases. 相似文献