Publications by authors named "Deuk-Sil Oh"

The aim of this study was to evaluate the anti-osteoporosis effects of leaf ethanol extract (OFLEE) in bone marrow-derived macrophages (BMM) and animals with osteoporosis. OFLEE not only suppressed tartrate-resistant acid phosphatase (TRAP)-positive cells with multiple nuclei but also decreased TRAP activity in BMM treated with macrophage colony stimulating factor (M-CSF) and receptor activator of nuclear factor-κB (NF-κB) ligand (RANKL). The formation of F-actin rings and the expression and activation of matrix metalloproteinases were decreased by OFLEE in BMM treated with M-CSF and RANKL.

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Sustainable substitutes for leather can be made from mushroom mycelium, which is an environmentally friendly alternative to animal and synthetic leather. Mycelium-based leather is derived from Polyporales, in which lignocellulosic material is used as the substrate. The plasticizing and crosslinking of mycelial mats with various reagents might affect the leather properties and mycelial architecture.

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Osteoarthritis (OA) is the most common degenerative joint disease with chronic joint pain caused by progressive degeneration of articular cartilage at synovial joints. Acteoside, a caffeoylphenylethanoid glycoside, has various biological activities such as antimicrobial, anti-inflammatory, anticancer, antioxidative, cytoprotective, and neuroprotective effect. Further, oral administration of acteoside at high dosage does not cause genotoxicity.

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  • The study examines extracts of C. tricuspidata fruit with different ethanol concentrations to evaluate their biomarker and biological effects.
  • The 80% ethanol extract showed high tyrosinase inhibitory activity, while the 100% ethanol extract had the highest levels of phenolics and flavonoids.
  • The research highlights the need for further studies on the fruit extract's pharmacological effects and safety for potential use as a skin depigmentation agent.
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The fruits, leaves, and roots of have been reported to contain large amounts of vitamin B, vitamin C, and flavonoids. They exhibit various physiological activities such as antitumor and anti-inflammatory effects. However, the hepatoprotective effects of extracts against oxidative stress-mediated liver injury have not yet been investigated.

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  • In December 2016, the WHO reported 383,000 asthma-related deaths and 235 million people suffering from asthma, highlighting the need for new, safer asthma medications.
  • The study assessed the anti-asthmatic effects and mechanisms of C. japonica oil, using an ovalbumin asthma murine model and various treatment groups to compare its efficacy against existing treatments.
  • Results showed that C. japonica oil effectively reduced key inflammatory markers and cells associated with asthma, suggesting that it is a promising new drug candidate, with oleic acid identified as its main active component.
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  • Bureau (Moraceae), a plant found in Northeast Asia, has been studied for its potential effects on xanthine oxidase (XO) activity, hyperuricemia, and gout for the first time.
  • The study found that the ethanol extract of CT leaves (CTLE) significantly inhibited XO activity and reduced serum uric acid levels in hyperuricemic mice when administered orally.
  • Key chemical compounds, including stigmasterol, β-sitosterol, vitamin E, rutin, and kaempferol, were identified in CTLE, with kaempferol showing the highest XO inhibitory activity, suggesting CTLE could be a viable alternative to conventional medications for treating hyperuricemia and gout.
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  • The study examined the antioxidant and antibacterial properties of leaf extracts using different solvents like hexane, ethyl acetate, and methanol, among others.
  • The methanolic extract had the strongest antioxidant activity, while the ethyl acetate extract was most effective against antibiotic-resistant bacteria, particularly MRSA strains.
  • Six active compounds, including vitamin E, were identified, highlighting the potential of these extracts in treating diseases related to oxidative stress and resistant bacterial infections.*
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Mushrooms have long been used worldwide for culinary and medicinal purposes because of their various nutrients and active constituents. The safety of mushrooms as a culinary ingredient requires validation. Although Mycoleptodonoides aitchisonii has long been used for culinary purposes in East Asia, it has not been authorized by a regulatory agency.

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Mycoleptodonoides aitchisonii has been used as culinary material in East Asia. We previously reported the antiasthmatic effect of M. aitchisonii; in this study we evaluated the mushroom's immune-stimulating effects.

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Article Synopsis
  • Asthma is a chronic respiratory disease that can be serious, particularly in young and elderly patients, leading to life-threatening conditions like apnea.
  • The study explored the effects of an edible mushroom, Mycoleptodonoides atichisonii, which has known health benefits, on asthma in a mouse model induced by ovalbumin.
  • Findings showed that M. atichisonii reduces inflammation in the lungs and normalizes asthma-related changes, suggesting it could be a potential treatment for managing asthma symptoms.
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Camellia japonica L. is a plant of which the seeds are used as a folk medicine, and it is native to South Korea, Japan and China. In previous study, triterpenes, flavonoids, tannins and fatty acids which have antiviral, antioxidant and anti inflammatory activity were reported from C.

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Thunb. (Fagaceae) (QA) is cultivated as a dietary and ornamental plant in China, Japan, South Korea, and Taiwan. It has been widely used as the main ingredient of acorn tofu, a traditional food in China and South Korea.

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The present study investigated the anti-obesity effects of Mycoleptodonoides aitchisonii (MA) in mice fed a high-fat (HF) diet. Two groups were fed either a normal control diet or an HF (45% kcal fat) diet for 12 weeks and three groups were fed an HF diet supplemented with powdered MA (MAP, 1%, 3%, and 5%) for 12 weeks. The anti-obesity effects of MAP supplementation on body weight, fat mass development, and lipid-related markers were assessed.

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Higher Basidiomycetes medicinal mushroom Mycoleptodonoides aitchisonii has become attractive as a natural health product because of its antihypertensive effects on human health. Moreover, the food industry is especially interested in the preparation of the nutritional tonic of this mushroom. Various studies on this mushroom have shown that it has antidiabetic, antihypertensive, and antioxidant effects.

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Sparassis crispa is a culinary-medicinal mushroom that has recently become popular in Korea, China, Japan, Germany, and the USA. S. crispa is a good source of food and nutraceuticals, or dietary supplements, due to its rich flavor compounds and beta-glucan content.

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