• Tuberculosis and Respiratory Diseases
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• v.53 no.2
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• pp.101-112
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• 2002

Background : Toluene diisocyanate(TDI) is a leading cause of occupational asthma. However, the pathogenesis of TDI-induced asthma is largely unknown because there is no suitable animal model. Materials and Methods : We developed a murine model of TDI-induced asthma by performing two sensitization with 3% TDI and one challenge with 1% TDI using ultrasonic nebulization. Results : Similar to occupational asthma in humans, murine TDI-induced asthma includes findings 1) increased inflammatory cells, including neutrophils and eosinophils, 2) histologic changes, including infiltration of inflammatory cells around bronchioles, thickened airway epithelium, contraction of bronchioles, and accumulation of mucus and debris in the bronchioles, 3) increased MMP-9 activity in inflammatory cells in the airway lumen, 4) airway hyperrespnosiveness. Administraion of an MMP inhibitor, MMPI-I, remarkably reduced all these pathophysiological findings. Conclusion : Therefore, we conclude that TDI-induced occupational asthma is associated with the induction of MMP-9 in inflammatory cells, and the inhibition of MMP-9 may be a good therapeutic strategy.

• The Journal of Korean Medicine
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• v.41 no.4
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• pp.12-26
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• 2020

Objectives: The aim of this study is to investigate the mechanisms involved in the anti-inflammatory and anti-tumor effects of Rhus verniciflua Stokes (RVS) on PMA-differentiated human monocytic leukemia THP-1 cells. Methods: Cells were treated with various concentrations of RVS decoction (0-300㎍/ml) for 24, 48, and 72h. Cell viability was evaluated by MTS/PMS assay. The expressions of MMP-2, MMP-9, TIMP-1, TIMP-2, iNOS and COX-2 mRNA and proteins were measured using RT-PCR and western blotting, respectively. Results: RVS suppressed expression of MMP-2 and MMP-9 mRNA. It also down-regulated iNOS and COX-2 mRNA and protein expression. RVS inhibited NF-𝜅B p65 activity and the phosphorylation of Akt and MAPK (ERK and p38 MAPK). Instead, the phosphorylation of JNK is increased at a very low concentration but decreased at higher concentrations. Conclusion: RVS is regarded to inhibit the expression of MMP and TIMP as well as iNOS and COX-2 gene expression via directly inhibiting the activation of NF-𝜅B and phosphorylation of MAPK pathway in THP-1 cells. This suggests RVS have potential to be used as a therapeutic agent for acute myeloid leukemia (AML).

• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.10
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• pp.1535-1542
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• 2014

This study was conducted to investigate the physicochemical properties and biological activities of collagens with different molecular weights from Alaska pollack (Theragra chalcogramma) skin as well as their efficacies as functional materials. The molecular weights of collagens were between 1~10 kDa (below 1 kDa (AP1), 1~3 kDa (AP2), 3~10 kDa (AP3), and above 10 kDa (AP4). The protein content of AP4 (40.19 g/100 g) was the highest. Collagen contents of AP1, AP2, AP3, and AP4 were 36.43, 32.23, 19.23, and 14.89%, respectively. The free amino acid and essential amino acid contents of AP1 were higher than those of AP2, AP3, and AP4. Fourier transform infrared spectroscopy spectra of collagens with different molecular weights showed wavenumbers representing the regions of amide I, amide II, amide III, and amide A, respectively. The electron-donating ability (29.51%) and SOD-like activity (38.45%) of AP1 were higher than those of AP2, AP3, and AP4. Tyrosinase inhibition activity of AP1 improved with higher treatment concentration. The rate of inhibition of MMP-1 production in HS68 cells exposed to UVB was suppressed by treatment with AP1 (29.78%) and AP2 (26.49%) at 1 mg/mL. Furthermore, there was a strong correlation between DPPH, superoxide dismutase, tyrosinase activity, and MMP-1 inhibition rate of collagens with different molecular weights.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.32 no.2 s.57
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• pp.75-79
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• 2006

In this study. we evaluated anti-aging activity of medical plants that protect the skin cell damage induced by UV irradiation. We have investigated diverse biological activities of Selaginella tamariscina as an anti-aging ingredient of cosmetics. S. tamariscina was found to show scavenging activities of radicals and reactive oxygen species (ROS) with the $IC_{50}$ values of $65.1{\mu}g/mL$ against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and $40.9 {\mu}g/mL$ against superoxide radicals in the xanthine/xanthine oxidase system, respectively. For testing intracellular ROS scavenging activity, the cultured human dermal fibroblasts were analyzed by increase in dichlorofluorescein (DCF) fluorescence upon exposure to UVB $20 mJ/cm^2$ after treatment of S. tamariscina. UVA-induced MMP-1 protein and mRNA expression in human dermal fibroblasts were reduced in a dose-dependent manner by S. tamariscina. Moreover, S. tamariscina inhibited MMP-2 (gelatinase) activity in UVA-irradiated human dermal fibroblasts assayed by zymography and semi-quantitative RT-PCR. Taken together, these results suggest that S. tamariscina may act as an anti-aging agent by Increasing collagen and preventing the skin cell damage induced by UV irradiation, and imply that S. tamariscina nay be useful as a new ingredient for anti-aging cosmetics.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.37 no.3
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• pp.237-245
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• 2011

In order to investigate the possibility of Inonotus obliquus extract as an active ingredient for wrinkle-care cosmetics, we prepared 70 % ethanolic extract of Inonotus obliquus and measured its DPPH radical scavenging activity and elastase inhibitory activity. We also evaluated the effect of Inonotus obliquus extract on expression of MMPs and HAS-2 in fibroblast and HaCaT cell, respectively. Inonotus Obliquus extract showed DPPH radical scavenging activity and elastase inhibitory activity in a dose-dependant manner ($SC_{50}$ = 91 ${\mu}g$/mL, $IC_{50}$=124 ${\mu}g$/mL). Inonotus obliquus extract inhibited the expression of MMP-1 mRNA 50 ~ 79 % at concentrations of 5 ~ 25 ${\mu}g$/mL, and reduced the expression of MMP-2 around 20 % at a concentration of 10 ${\mu}g$/mL. And it also reduced the expression of MMP-9 54 ~ 70 % in tconcentrations of 5 to 25 ${\mu}g$/mL. Furthermore, Inonotus obliquus extract increased HAS-2 mRNA expression in a dose-dependent manner in concentrations of 5 to 25 ${\mu}g$/mL without cytotoxicity. These results suggested that Inonotus Obliquus extract could be useful as an active ingredient for wrinkle-care cosmetics.

• Korean Journal of Medicinal Crop Science
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• v.27 no.4
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• pp.247-258
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• 2019

Background: Astragali radix (A) and Lithospermi radix (L) have long been used as traditional medicines due to their known anti-inflammatory effects. This study aimed at evaluating, their optimal mixing ratio and their functional compounds by investigating the inhibitory effects of mixed extracts of A and L and their active compounds on matrix metalloproteinases (MMPs). Methods and Results: A and L extracts were obtained by extraction at $80^{\circ}C$ using 50% and 70% fermented alcohol, respectively, and then mixed at a ratio of 5 : 5, 6 : 4, 7 : 3 and 8 : 2 (w/w). The activities of MMP-1, MMP-3, and MMP-13 were evaluated in interleukin-1beta ($IL-1{\beta}$)-induced SW1353 cells. The extract mixtures showed synergistic inhibitory effects on MMP-3 and MMP-13, higher than the effects of the individual A and L extracts. The 7 : 3 mixture (ALM16) showed the most effective MMPs inhibitory activity, while among the active ingredients, calycosin-7-O-${\beta}$-D-glucoside and lithospermic acid exhibited excellent MMPs inhibitory activity. Additionally, an HPLC method was established for simultaneous quantification of the effective components of the extract mixtures, and validated by measuring the linearity, precision and accuracy of the limit of detection (LOD) and limit of quantification (LOQ). Conclusions: ALM16 showed the most effective MMPs inhibitory activity. Calycosin-O-${\beta}$-D-glucoside, calycosin and lithospermic acid were identified as useful candidates, as they were the major functional compounds in the MMP inhibitory activity. Summarily, ALM16 might be a highly effective in osteoarthritis management, owing to its because it exhibits a protective effect on cartilage via excellent inhibition of MMPs.

• Korean Journal of Pharmacognosy
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• v.37 no.4 s.147
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• pp.253-257
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• 2006

We examined anti-angiogenic effects of water extracts from 32 plant materials (20 Korean medicinal plants and 12 western herbs) using cell-based anti-angiogenic assay, HUVEC tube formation assay, and then we found that 7 plant extracts inhibited HUVEC tube formation strongly. The plant materials which showed anti-angiogenic effects are Cinnamomi Ramulus, Atractylodis Rhizoma alba, Polygalae Radix, Myristicae Semen, Artemisiae Iwayomogii Herba, leaves of Rosmarinus officinalis, and leaves of Melissa officinalis. We also investigated inhibitory effects of these anti-angiogenic herbal extracts on MMP (matrix metalloproteinase) activity which has important roles in angiogenesis. Among extracts tested in this study, water extract of Melissa officinalis showed the most potent anti-angiogenic and MMP inhibitory activity.

• Korean Journal of Veterinary Research
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• v.59 no.4
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• pp.195-199
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• 2019

Disulfiram (DSF) is a member of the dithiocarbamate family that can bind copper. Recent studies have shown that DSF has anti-cancer activities, but the mechanism has not been clarified. Therefore, it is important to study the action mechanism of DSF to maximize its anticancer effects. A human leukemia cell line, HL-60, was used in this study. HL-60 cells were treated with DSF and the cellular metabolic activity was measured. DSF increased the cell death of HL-60 cells in annexin V-fluorescein isothiocyanate/propidium iodide staining analysis. In addition, DSF decreased the mitochondrial membrane potential (MMP) of the HL-60 cells. The cytotoxicity of DSF on HL-60 cells was observed at 0.4 μM. Interestingly, the reduction of MMP by DSF was recovered by N-acetyl-L-cysteine, an inhibitor of reactive oxygen species (ROS) production. This suggests that the decrease in MMP by DSF is closely related to the production of ROS in HL-60 cells, which indicates the relationship between the apoptosis of HL-60 cells by DSF and the role of the mitochondria. This study provides clinicians and researchers with valuable information regarding the anti-cancer activity of DSF in terms of the action mechanism.

• Nutrition Research and Practice
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• v.6 no.4
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• pp.294-300
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• 2012

We investigated the effects of resveratrol on metastasis in in vitro and in vivo systems. 4T1 cells were cultured in the presence of various concentrations (0-30 ${\mu}mol/L$) of resveratrol. For experimental metastasis, BALB/c mice were injected intravenously with 4T1 cells in the tail vein, and were orally administered various concentrations (0, 100, or 200 mg/kg Body weight) of resveratrol for 21 days. After resveratrol treatment, cell adhesion, wound migration, invasion, and MMP-9 activity were significantly decreased in a dose-dependent manner in 4T1 cells (P < 0.05). The numbers of pulmonary nodules were significantly decreased in mice fed the resveratrol (P < 0.05). The plasma MMP-9 activity was decreased in response to treatment with resveratrol in mice (P < 0.05). We conclude that resveratrol inhibits cancer metastasis both in vitro and in vivo, and this inhibition is likely due to the decrease in MMP-9 activity caused by resveratrol.

• The Journal of the Korea Contents Association
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• v.20 no.6
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• pp.124-130
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• 2020

The present study investigated the anti-proliferate and anti-invasive of Phorbol 12-myristate 13-acetate (PMA)-induced matrix metalloproteinase (MMP-2) and MMP-9 activities of combined treatment with cisplatin and ethyl acetate fractions of Paeonia japonica. Cell Proliferation was detected by the MTS assay and the activity and mRNA expression of MMP-2/-9 were examined by zymography and RT-PCR. As results, cisplatin or p. japonica treatment of YD-10B cells resulted in a dose-dependent inhibition of cell growth. Also, the viability of YD-10B cells treated with combination of 200 μM cisplatin and 50 ㎍/ml p. japonica was inhibited to 50% in compared with the cisplatin alone. In PMA-treated YD-10B cells, co-treatment of 200 μM cisplatin with 50 ㎍/ml p. japonica significantly inhibited mRNA expression and protein activation of MMP-2/-9. Therefore, This study suggest that the combination treatment of cisplatin and p. japonica potentiates a promising anti-invasive agent and has more potential anti-cancer drug for oral cancer therapy than cisplatin alone.