Publications by authors named "Chung-Ho Ryu"

This study investigated the effects of fermented beverage, kale/apple juice containing 5% vinegar in subjects with metabolic syndrome. Subjects were randomly assigned to receive 250 mL fermented beverage or water containing fructose, glucose, and sucrose twice daily for 10 weeks. Consumption of the fermented beverage significantly decreased plasma triglyceride, thiobarbituric acid reactive substances (TBARS), tumor necrosis factor (TNF)-α, and high sensitivity C-reactive protein (hs-CRP) levels compared to baseline values (<0.

View Article and Find Full Text PDF

c-Jun N-terminal kinase (JNK) is activated by chemotherapeutic reagents including natural plant polyphenols, and cell fate is determined by activated phospho-JNK as survival or death depending on stimuli and cell types. The purpose of this study was to elucidate the role of JNK on the anticancer effects of the Korean plant L. (pKAL) polyphenols in p53 wild-type HCT116 human colorectal cancer cells.

View Article and Find Full Text PDF

Plant-derived natural polyphenols exhibit anticancer activity without showing any noticeable toxicities to normal cells. The aim of this study was to investigate the role of p53 on the anticancer effect of polyphenols isolated from Korean L. (pKAL) in HCT116 human colorectal cancer cells.

View Article and Find Full Text PDF
Article Synopsis
  • This study investigated the anti-cancer effects of anthocyanins from fruits of AIMs on hepatocellular carcinoma cells, showing that they can induce apoptosis and inhibit cell proliferation.
  • AIMs demonstrated a dose-dependent inhibition of Hep3B cell invasion and migration at a concentration of 100 µg/mL, both in vitro and in vivo.
  • Results from a xenograft mouse model confirmed that AIMs reduced tumor growth without causing toxicity, by inhibiting NF-κB activation and its associated target proteins.
View Article and Find Full Text PDF

Decoctions obtained from the dried flowers of Lonicera japonica Thunb. (Indongcho) have been utilized in folk remedies against inflammatory diseases. Recently, many agents that have used for inflammatory diseases are showing anticancer effects.

View Article and Find Full Text PDF

Background: Bile acids have anti-cancer properties in a certain types of cancers. We determined anticancer activity and its underlying molecular mechanism of ursodeoxycholic acid (UDCA) in human DU145 prostate cancer cells.

Methods: Cell viability was measured with an MTT assay.

View Article and Find Full Text PDF

Decoctions of the dried flowers of Lonicera japonica Thunb. (Indongcho) have been utilized in folk remedies against various inflammatory diseases, and it is reported neuroprotective effects. The cytokines release from microglia is closely linked to various chronic neurodegenerative diseases like Alzheimer's disease and Parkinson's disease.

View Article and Find Full Text PDF

Morin, a flavonoid found in figs and other Moraceae species, displays a variety of biological actions, exerting antioxidant, antiinflammatory and anticarcinogenic effects. Here, we investigated the anticancer activity of morin focusing on antiadhesive influence. We performed experiments with MDAMB231 human breast cancer cells.

View Article and Find Full Text PDF

Recent evidence suggests that polyphenolic compounds from plants have anti-invasion and anti-metastasis capabilities. The Korean annual weed, Artemisia annua L., has been used as a folk medicine for treatment of various diseases.

View Article and Find Full Text PDF

The Korean prostrate spurge Euphorbia supina (Euphorbiaceae family) has been used as a folk medicine in Korea against a variety of ailments such as bronchitis, hemorrhage, jaundice and multiple gastrointestinal diseases. Polyphenols from Korean E. supina (PES) which include quercetin and kaempferol derivatives have anticancer properties.

View Article and Find Full Text PDF

The Korean prostrate spurge Euphorbia supina is abundant in polyphenols and has been used as a folk medicine in Korea against a variety of diseases. Thus, we aimed to investigate the effect of polyphenol mixtures of Korean Euphorbia supina (PES) on the invasion and metastasis of highly metastatic breast cancer MDA-MB-231 cells. Firstly, PES showed no cytotoxicity on cancer cells and endothelial cells (ECs) at the doses of 0.

View Article and Find Full Text PDF

Pachymic acid (PA) is a lanostane-type triterpenoid derived from Poria cocos mushroom that possess various biological effects such as anti-cancer, antiinflammatory and anti-metastasis effects. In this study, we investigated the anti-cancer effects of PA in EJ bladder cancer cells. The results showed that PA significantly inhibited proliferation of EJ cells in a dose-dependent manner.

View Article and Find Full Text PDF

We investigated the protective ability of 3-(4'-hydroxyl-3',5'-dimethoxyphenyl)propionic acid (HDMPPA), an active principle in Korean cabbage kimchi, against the production of proinflammatory mediators and cytokines, and the mechanisms involved in lipopolysaccharide (LPS)-stimulated BV2 microglial cells. HDMPPA significantly suppressed the production of nitric oxide (NO) and prostaglandin E2, along with the expression of inducible NO synthase and cyclooxygenase-2 in LPS-stimulated BV2 cells, at concentrations with no cytotoxicity. HDMPPA also attenuated the LPS-induced expression and secretion of proinflammatory cytokines, such as tumor necrosis factor-α and interleukin-1β.

View Article and Find Full Text PDF

It is evident based on literature that flavonoids from fruit can safely modulate cancer cell biology and induce apoptosis. Therefore, we investigated the anticancer activity of morin, a flavonoid which is plentiful in twigs of mulberry focusing on apoptosis, and its mechanisms. Morin upregulated the Fas receptor, and activates caspase-8, -9 and -3 in HCT-116 cells.

View Article and Find Full Text PDF

Background: Cisplatin (cis-diaminedichloroplatinum, CDDP) is a widely used chemotherapeutic agent for the treatment of many cancers. However, initial resistance to CDDP is a serious problem in treating these cancers. Vitis coignetiae Pulliat (Meoru in Korea) have shown anti-nuclear factor kappa B and anti-epidermal growth factor receptor activities in cancer cells.

View Article and Find Full Text PDF
Article Synopsis
  • Orostachys japonicus A. Berger, a folk cancer remedy, was studied for its anti-cancer effects on human leukemia cells, particularly its flavonoid extracts.
  • FEOJ caused apoptosis (programmed cell death) in U937 leukemic cells in a dose-dependent manner, with significant effects observed at higher concentrations.
  • The apoptosis induced by FEOJ was linked to caspase activation, mitochondrial membrane potential loss, and suppression of specific proteins, with the p38 MAPK signaling pathway playing a crucial role in these processes.
View Article and Find Full Text PDF

Evidence suggests that phytochemicals can safely modulate cancer cell biology and induce apoptosis. Here, we investigated the anti-cancer activity of morin, a flavone originally isolated from members of the Moraceae family in human leukemic cells, focusing on apoptosis. An anti-cancer effect of morin was screened with several human leukemic cell lines.

View Article and Find Full Text PDF

Background: The extract of Allium cepa Linn is commonly used as adjuvant food for cancer therapy. We assumed that it includes a potential source of anti-cancer properties.

Methods: We investigated anti-cancer effects of polyphenols extracted from lyophilized A.

View Article and Find Full Text PDF

In this study, we investigated the anti-inflammatory effects of newly synthesized 4-[(butylsulfinyl)methyl]-1,2-benzenediol (SMBD) in lipopolysaccharide (LPS)-stimulated BV2 microglia and the subsequent signaling events. Following stimulation with LPS, elevated production of nitric oxide (NO) and prostaglandin E2 (PGE2) was detected in BV2 cells; however, SMBD pretreatment inhibited the production of NO and PGE2 through suppressing gene expression of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2), respectively, at non-toxic concentrations. LPS-stimulated gene expression and production of interleukin (IL)-1β and tumor necrosis factor (TNF)-α were also significantly reduced by SMBD.

View Article and Find Full Text PDF

Cyperus rotundus L. belongs to the Cyperaceae family and is a well documented traditional medicinal herb. Its rhizome has been reported to possess wide spectrum pharmacological activities including anti-inflammatory and antioxidant activity.

View Article and Find Full Text PDF
Article Synopsis
  • * In experiments, morin significantly reduced the ability of highly metastatic MDA-MB-231 breast cancer cells to form colonies and invaded less when exposed to low doses, without causing cell toxicity.
  • * The study indicates that morin may hinder cancer progression by altering cell shape, suppressing certain proteins involved in cell movement (like MMP-9 and N-cadherin), and inhibiting the Akt signaling pathway, which is crucial for cell invasion, both in vitro and in an animal model.
View Article and Find Full Text PDF

Evidence suggests that anthocyanins inhibit EGFR and Akt activity. However, it is still unknown whether the inhibitory effect of anthocyanins on Akt is associated with the anti-EGFR effect. The effect of anthocyanins on epithelial-mesenchymal transition (EMT) has not been extensively studied.

View Article and Find Full Text PDF

Previous studies have suggested that soy sauce contains specific bioactive components and various biological activities of soy sauce have been observed. Soy soluble polysaccharide (SSPS), a predominant bioactive compound in soy sauce, has numerous pharmacological actions, including anti‑inflammatory and immunomodulating activities. In the current study, the apoptotic effects of SSPS were investigated in HCT‑116 human colon cancer cells.

View Article and Find Full Text PDF

Allium cepa Linn is commonly used as supplementary folk remedy for cancer therapy. Evidence suggests that Allium extracts have anti-cancer properties. However, the mechanisms of the anti-cancer activity of A.

View Article and Find Full Text PDF

Tight junctions (TJs) are a mode of cell-to-cell adhesion in epithelial or endothelial cells, and serve as a physical barrier to maintenance of homeostasis in body by controlling paracellular transport. Claudins are the most important molecules of the TJs, but paradoxically these proteins are frequently over-expressed in cancers and their overexpression is implicated in the invasive potential of cancer. Hence, we investigated the effects of flavonoids extracted from Orostachys japonicus A.

View Article and Find Full Text PDF