• Proceedings of the PSK Conference
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• 2003.04a
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• pp.176.1-176.1
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• 2003

The protective effects on hepatic fibrosis of an aqueous extract from the roots of Platycodon grandiflorum A. DC (Campanulaceae), Changkil (CK), in hepatic stellate cell line, CFSC-2G. The increased deposition of extracellular matrix by hepatic stellate cells following liver injury in a process known as activation is considered a key mechanism for increased collagen content of liver during the development of liver fibrosis. (omitted)

• The Journal of Internal Korean Medicine
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• v.29 no.1
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• pp.177-188
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• 2008

Objectives : This study was performed to investigate the anti-fibrogenic effect of Artemisiae Capillaris Herba on cultured rat hepatic stellate cells. Materials and Methods : Hepatic stellate cells(HSC-T6) were treated with various concentrations of Artemisiae Capillaris Herba extract for 24 hours. The extraction was done either with distilled water or 50% EtOH. After the treatment, cell viability, proliferation, procollagen levels and the mRNA of the collagen type 1a2 and ASMA were measured by using MTT assay, BrdU assay, RT-PCR, and Procollagen Type I C-peptide EIA Kit. Results : The viability and proliferation of the hepatic stellate cells were decreased as the concentration increased. The mRNA expression decreased consistently with the volume of the secreted procollagen with the extraction made with distilled water, which indicates the herb has inhibitory effect on fibrogenesis of the liver by regulating one of the fibrosis associated genes in transcription. However, it increased in 50% EtOH extraction, which shows that a more stable reaction is expected of the extraction made with distilled water than the extraction made with 50% EtOH. The production of procollagen was decreased by a low-concentration treatment with Artemisiae Capillaris Herba, but increased by a high concentration. It seemed that the cells were responding to Artemisiae Capillaris Herba in low- concentrations, thus producing small amounts of collagen. When the drug was administered at high enough concentration to give direct toxicity to cells, the ability of cells to produce collagen was activated, and the overproduction of collagen was observed as an undesirable results. Conclusion : These results suggest that Artemisiae Capillaris Herba is beneficial in the treatment of cirrhotic patients as well as for the patients with chronic hepatitis when extracted with water in the proper concentrations.

• Proceedings of the Korea Environmental Mutagen Society Conference
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• 2003.10a
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• pp.120-120
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• 2003

• The Journal of Internal Korean Medicine
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• v.29 no.2
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• pp.299-310
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• 2008

Objectives : This study was performed to investigate the anti-fibrogenic effect of Salvia miltiorrhiza on rat hepatic stellate cells. Materials and Methods : Hepatic stellate cells(HSC-T6) were treated with various concentrations of Salvia miltiorrhiza extract for 24 hours. It was extracted either with distilled water or 50% EtOH. After the treatment, cell viability, proliferation, procollagen levels and the mRNA of the collagen type 1a2 and ASMA were measured Results : The viability and proliferation of the hepatic stellate cells were decreased as concentration increased. The mRNA expression decreased consistently with the volume of the secreted procollagen with the extraction made with distilled water. This indicates the herb has inhibitory effect on fibrogenesis of the liver by regulating one of the fibrosis associated genes in transcription. However it increased in 50% EtOH extraction, which shows that a more stable reaction is expected of the extraction made with distilled water than the extraction made with 50% EtOH. The production of procollagen was decreased by a low-concentration treatment with Salvia miltiorrhiza, but increased by a high concentration. It seemed that the cells were responding to Salvia miltiorrhiza in low- concentration, thus producing smaller amounts of collagen. When the drug was administered in high enough concentration to give direct toxicity to cells, an overproduction of collagen was observed. Conclusion : These results suggest that Salvia miltiorrhiza is a possible candidate for the treatment of cirrhotic patients as well as for patients with chronic hepatitis when extracted with water in the proper concentrations.

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.142.2-142.2
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• 2003

The activation of the hepatic stellate cell (HSC) is a key step in liver fibrogenesis. We investigated the changes of global gene expression during activation in hepatic stellate cells using a rat cDNA microarray with 5, 000 sequence-verified clones. We identified osteopontin (OPN), a secreted matrix protein, as one of the upregulated factors. Northern analysis showed OPN mRNA was increasingly expressed during progressive activation of cultured rat HSCs and in models of experimental liver fibrosis. (omitted)

• The Journal of Internal Korean Medicine
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• v.30 no.1
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• pp.74-84
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• 2009

Objectives : This study was performed to investigate the anti-fibrogenic effect of Injinchunggan-tang on cultured rat hepatic stellate cells. Materials and Methods : Hepatic stellate cells(HSC-T6) were treated with various concentrations of Injinchunggan-tang extract for 24, 48, and 72 hours. The extraction was done with distilled water. After the treatment, cell viability, proliferation, procollagen levels and the mRNA of the TIMP-1, TIMP-2, and ASMA were measured by using MTT assay. BrdU assay, procollagen type I C-peptide EIA kit and RT-PCR. Results : The proliferation, mRNA expression and synthesis of collagen of the hepatic stellate cells were inhibited by Injinchunggan-tang treatment in a dose-dependent manner. This indicates the prescription has inhibitory effect on fibrogenesis of the liver by regulating the fibrogenesis associated genes in transcription. Cell viability was inhibited in time- and dose-dependent manners. It seemed that the drug should be used with sufficient dose to acquire treatment effect. Conclusion : These results suggest that Injinchunggan-tang is beneficial in the treatment of cirrhotic patients as well as for the patients with chronic hepatitis.

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.103.3-104
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• 2003

Activation of hepatic stellate cell has been identified as a critical step in hepatic fibrogenesis and is regulated by several factors including cytokines and oxidative stress. In this study, we assayed effects of saponin (CKS), inulin (CKI) and oligo-sugars (CKO) isolated from Platycodon grandiflorum A. DC, changkil (CK) on experimental cell cycle arrest and apoptosis in hepatic stellate cell line (HSC-T6). CKS induced cell arrest at G$_1$. CKS also reduced intercellular reactive oxygen species and collagen synthesis in hydrogen peroxide-induced oxidative stress and acetaldehyde-stimulated collagen synthesis, respectively, in HSC-T6 cells. (omitted)

• Journal of Animal Reproduction and Biotechnology
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• v.35 no.2
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• pp.113-118
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• 2020

Hepatic stellate cells (HSCs) play essential roles in normal and pathophysiological function in liver. In steady state, HSCs contribute to retinoid storage, immune tolerance, and extracellular matrix (ECM) homeostasis. Upon liver injury, they become activated and lead to morphological and functional changes. Studies have demonstrated that activation of HSCs by various stimuli such as toxins, microbial infection, or metabolic overload can promote the fibrotic changes in liver by production of ECM. Herein, we provide current knowledge about the basic characteristics of HSCs and the mechanism by which they are activated.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.10a
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• pp.70-70
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• 2019

Hepatic fibrosis is a common chronic liver diseases, characterized by the excessive deposition of extracellular matrix (ECM). Activation of hepatic stellate cells (HSC) is proliferative and fibrogenic and accumulating ECM. Transforming growth factor $(TGF)-{\beta}1$ is a critical mediator of HSC activation and ECM accumulation leading to fibrosis. Tenebrio molitor (TM), known as yellow mealworms, is reported in many countries as the nutritional value of foods. Our study has aims of finding liver function improvement effect of S. cerevisiae fermented Tenebrio molitor (SCTM) in vitro model. SCTM regulates $TGF-{\beta}1$ induced hepatic fibrosis via regulation of the $TGF-{\beta}1/Smad$ signaling. Also, we compared the components increased by yeast fermentation. It is possible to make a useful insect-derived alternative food in the improvement of hepatic liver disease.

• Korean Journal of Pharmacognosy
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• v.43 no.1
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• pp.27-31
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• 2012

This study was designed to elucidate the effects of Cirsium japonicum (CJ) extracts on hepatic stellate cells (HSCs, LX-2 cells) proliferation, which is induced by platelet-derived growth factor (PDGF) or transforming growth factor-${\beta}$ (TGF-${\beta}$). The content of total phenol, flavonoid, and silymarin derivatives was more higher in CJ-flower than in CJ-root. Consistent with these results, the LX-2 cells growth inhibition was more effective in CJ-flower extract than in CJ-root extract, the complete growth inhibition concentration was $1{\mu}g/mL$ and $50{\mu}g/mL$, respectively. These results suggest that extracts from CJ-flower can be potentially used as therapeutic substances for the regulatioin of HSCs activation.