Publications by authors named "Jae Kwan Hwang"

The objective of this study was to examine whether fucosterol, a phytosterol of marine algae, could ameliorate skeletal muscle atrophy in tumor necrosis factor-alpha (TNF-α)-treated C2C12 myotubes and in immobilization-induced C57BL/6J mice. Male C57BL6J mice were immobilized for 1 week to induce skeletal muscle atrophy. Following immobilization, the mice were administrated orally with saline or fucosterol (10 or 30 mg/kg/day) for 1 week.

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Article Synopsis
  • Muscle atrophy is a significant health issue characterized by loss of muscle mass and function, and the study investigates the effects of fingerroot extract (BPE) as a potential solution.
  • BPE, standardized to contain panduratin A, demonstrated significant benefits in restoring muscle mass, strength, and endurance in a mouse model induced with muscle atrophy by dexamethasone.
  • The extract works by reducing inflammation, enhancing antioxidant activity, stimulating protein synthesis through specific signaling pathways, and inhibiting muscle degradation processes, suggesting its potential role in combating muscle wasting diseases.
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Muscle atrophy or muscle wasting, which is featured by reduced muscle function and mass, typically results from disuse, aging, and chronic diseases. The deer antler, which refers to the young and non-ossified antlers of various species of deer-related animals, is not fully calcified and comprises of densely growing hair. Here, we investigated whether -fermented antler extract (FAE) inhibits immobilization-induced muscle atrophy in C57BL/6J mice.

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Skeletal muscle atrophy, which is characterized by diminished muscle mass, strength, and function, is caused by malnutrition, physical inactivity, aging, and diseases. Korean mint ( Kuntze) possesses various biological functions, including anti-inflammatory, antioxidant, anticancer, and antiosteoporosis activities. Moreover, it contains tilianin, which is a glycosylated flavone that exerts antioxidant, anti-inflammatory, antidiabetic, and neuroprotective activities.

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Background: Cancer cachexia-characterized by anorexia, body weight loss, skeletal muscle atrophy, and fat loss-affects nearly 80% of cancer patients and accounts for 20% of cancer deaths. , known as Java turmeric, and its active compound xanthorrhizol (XAN) exhibit anticancer, anti-inflammatory, and antioxidant properties. However, the ameliorative effects of extract (CXE) and XAN on cancer-associated adipose atrophy remain unexplored.

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Although xanthorrhizol, a sesquiterpenoid oil obtained from the rhizome of Roxb., known as Java turmeric, has many pharmacological effects, its pharmacokinetics remain unclear. Therefore, we investigated the pharmacokinetics of xanthorrhizol in mice and rats.

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Boesenbergia pandurata and its major active ingredient, panduratin A (PAN), exhibit antibacterial, anti-oxidant, anti-inflammatory, and anti-obesity effects. We explored the time course of the plasma and tissue (in the major organs, gums and skin) concentrations of PAN after oral administration of a B. pandurata extract to rats.

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Sarcopenia, age-related muscle atrophy, weakening muscle strength, and exercise capacity, generally accompany imbalances in protein metabolism. Ramat. extract (CME) and its active compound, isochlo-rogenic acid A (IcA), have been reported to have anti-oxidative, anti-diabetic, and neuroprotective effects.

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[This corrects the article DOI: 10.1007/s10068-020-00816-5.].

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Skeletal muscle plays a vital role in the conversion of chemical energy into physical force. Muscle atrophy, characterized by a reduction in muscle mass, is a symptom of chronic disease (cachexia), aging (sarcopenia), and muscle disuse (inactivity). To date, several trials have been conducted to prevent and inhibit muscle atrophy development; however, few interventions are currently available for muscle atrophy.

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Xanthorrhizol, isolated from the Indonesian Java turmeric Curcuma xanthorrhiza, displays broad-spectrum antibacterial activity. We report herein the evidence that mechanism of action of xanthorrhizol may involve FabI, an enoyl-(ACP) reductase, inhibition. The predicted Y156V substitution in the FabI enzyme promoted xanthorrhizol resistance, while the G93V mutation originally known for triclosan resistance was not effective against xanthorrhizol.

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Muscle atrophy, characterized by a reduced number and size of myofibers, occurs due to immobilization, aging, and several chronic diseases. , belonging to the Labiatae family, is widely used as a traditional medicine in Korea, China, and Japan. Previous studies have reported that has various physiological activities, such as anti-bacteria, anti-cancer, and liver protection.

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St. Paul's Wort ( L.) confers anti-oxidative, anti-inflammatory, anti-allergic, anti-infertility, and immunosuppressive properties.

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Sarcopenia is a muscle disease featured by the loss of muscle mass and dysfunction with advancing age. The 5,7-dimethoxyflavone (DMF), a major flavone found in Kaempferia parviflora has biological activities, including anti-diabetes, anti-obesity, and anti-inflammation. However, its anti-sarcopenic effect remains to be elucidated.

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It can be difficult to identify health/functional foods that exert therapeutic benefits for alleviating gingivitis and periodontitis. Recently, extracts of (Roxb.), which is a tropical plant, have shown promising inhibitory activity against lipopolysaccharide-induced periodontitis.

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Ultraviolet B (UVB) irradiation-induced photoaging leads to wrinkles, dryness, and skin roughness. UVB irradiation activates the production of reactive oxygen species (ROS) and stimulates the mitogen-activated protein kinase (MAPK)/activator protein-1 (AP-1) signaling pathway, which promotes expression of matrix metalloproteinases (MMPs) and inflammatory cytokines. The current study aimed to assess the anti-photoaging activity of extract (ARE) on UVB-treated human dermal fibroblasts.

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has been reported to exhibit anti-allergic, anti-infertility, anti-inflammatory, anti-rheumatic, and immunosuppressive activities. However, there are very few studies describing its stimulatory effects on exercise capacity. This study elucidated whether extract (SOE) standardized to kirenol content can enhance exercise endurance by increasing mitochondrial biogenesis.

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Muscle atrophy, which is characterized by a decrease in muscle mass, function, and protein content, can be caused by aging, disease, and physical inactivity. Red bean or Adzuki bean () has been consumed as an edible legume. Red bean possesses various functional properties, such as antidiabetes, antiaging, anti-inflammatory, anticancer, and hepatoprotective activities.

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Chronic exposure to ultraviolet (UV) radiation, regarded as a major cause of extrinsic aging or photoaging characterized by wrinkle formation and skin dehydration, exerts adverse effects on skin by causing the overproduction of reactive oxygen species. Kuntze, known as Korean mint, possesses a wide spectrum of biological properties including antioxidation, anti-inflammation, and anti-atherosclerosis. Previous studies have reported that protected human keratinocytes against UVB irradiation by restoring the anti-oxidant defense system.

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Type II diabetes mellitus (T2DM), characterized by abnormal blood glucose level, is a metabolic disease caused by pancreatic β-cell dysfunction and insulin resistance. Previous studies have reported that whole grain intake alleviated various metabolic syndromes. Here, the hypoglycemic effect of whole grain diet (WGD) on type II diabetes was investigated in C57BL/KsJ- mice.

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Xanthorrhizol (XTZ), isolated from Curcuma xanthorrhiza, has potent antifungal and antibacterial activity. It shows very strong activity against Gram-positive bacteria, such as Streptococcus mutans and Staphylococcus aureus, but is generally not active against Gram-negative bacteria. In this study, we explored the possibility of using a combination strategy for expanding the antimicrobial spectrum of XTZ against Gram-negative bacteria.

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Background: Ligation of the intersphincteric fistula tract (LIFT) is a sphincter-preserving operation for anal fistulas. Although it has advantages in preserving continence after surgery, it is difficult to perform owing to the narrow field of view. We performed a modified surgical procedure based on the LIFT to overcome these drawbacks.

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Vitamin C significantly reduced senescence-associated β-galactosidase (SA-β-gal) activity, with both the suppression of cell-cycle inhibitors (p53, p21, p16, and pRb) and stimulation of cell-cycle activators (E2F1 and E2F2). Vitamin C also effectively attenuated the hyperactivation of the phosphatidylinositol 3-kinase (PI3K)/protein kinase-B (AKT) signaling pathway. The expression of the longevity marker, the mammalian target of rapamycin (mTOR), was down-regulated by vitamin C while the expressions of forkhead box O3a (FoxO3a) and sirtuin1 (SIRT1) were up-regulated by vitamin C.

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Whole grain comprises starchy endosperm, germ, and bran tissues, which contain fibers, minerals, vitamins, and several phytochemicals. Whole grain cereal (WGC)-based food products supply beneficial nutrients (essential for health care) and macronutrients (essential for body maintenance and support). The present study investigated the inhibitory effect of WGC on obesity-induced muscle atrophy in obese C57BL/6N mice.

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Ultraviolet (UV) light, a main cause of photoaging, leads to collapse of skin structure, resulting in wrinkle formation and dehydration. The present study assessed the anti-photoaging and moisturizing effects of extract (BRE). UVB-irradiated hairless mice were orally administered with BME (300 mg/kg/day) for 8 weeks.

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