Publications by authors named "Jumi Hong"

Alzheimer's disease (AD) remains a significant public health challenge with limited effective treatment options. Ramalin, a compound derived from Antarctic lichens, has shown potential in the treatment of AD because of its strong antioxidant and anti-inflammatory properties. However, its instability and toxicity have hindered the development of Ramalin as a viable therapeutic agent.

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Article Synopsis
  • Alzheimer's disease (AD) is a serious brain condition characterized by harmful protein buildup, leading to memory loss and cell death, with no current effective treatments available.
  • This study explores new compounds called chloride-substituted Ramalin derivatives, which may help fight AD by targeting the aggregation of tau proteins and inhibiting an enzyme linked to amyloid production.
  • The results show that some derivatives, especially RA-3Cl and RA-4Cl, effectively reduce tau aggregation and BACE-1 enzyme activity, indicating potential for developing new AD therapies.
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Background: Noninvasive monopolar radiofrequency (NMRF) is widely used for dermal and subdermal volumetric heating, yet detailed research on its effects on dermal temperature is scarce.

Aims: This study evaluates the impact of NMRF on dermal temperature and its potential for dermal remodeling using a porcine model.

Methods: Noninvasive monopolar radiofrequency was applied to porcine skin with temperature monitoring via optic fiber technology and forward-looking infrared thermal imaging.

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The CO atmospheric concentration level hit the record at more than 400 ppm and is predicted to keep increasing as the dependence on fossil fuels is inevitable. The CO electrocatalytic conversion becomes an alternative due to its environmental and energy-friendly properties and benign operation condition. Lately, bimetallic materials have drawn significant interest as electrocatalysts due to their distinct properties, which the parents' metal cannot mimic.

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Article Synopsis
  • - The cause of Alzheimer's disease (AD) is not well understood, and there is currently no effective cure or treatment to halt its progression.
  • - The study explored the therapeutic potential of ramalin, a compound derived from Antarctic lichen, for treating AD, highlighting its antioxidant, BACE-1 inhibition, and anti-inflammatory properties.
  • - Ramalin and its synthesized derivatives show promise as potential treatments by targeting multiple pathways related to Alzheimer's disease.
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(UA) is a member of the family Umbilicariaceae. To the best of our knowledge, no studies on its anti-inflammatory effects have been reported yet. In the present study, we examined its ability to suppress inflammatory responses and the molecular mechanisms underlying these abilities using lipopolysaccharide- (LPS-) stimulated RAW 264.

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The aim of the present study was to determine the anti-inflammatory effect of an extracts isolated from the lichen. Amandinea sp. was collected from the Antarctic and extracted with methanol.

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Optical pulses from picosecond lasers can be delivered to the skin as single, flat-top beams or fractionated beams using a beam splitter or microlens array (MLA). In this study, picosecond neodymium:yttrium aluminum garnet laser treatment using a single flat-top beam and an MLA-type beam at the wavelengths of 532 nm and 1,064 nm were delivered on ex vivo genotype-regulated, pigmented micropig skin. Skin specimens were obtained immediately after treatment and microscopically analyzed.

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Inflammation triggered by the innate immune system is a strategy to protect organisms from the risk of environmental infection. However, it has recently become clear that inflammation can cause a variety of human diseases, including cancer. In this study, we investigated the effects of an ethanol extract of the Antarctic freshwater microalgae, (ETCH), on inflammation and carcinogenesis in RAW 264.

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Optical pulses from picosecond lasers can be delivered to the skin using microlens array (MLA) optics or a diffractive beam splitter to generate multiple, focused, high-intensity, micro-injury zones in the epidermis and dermis. The aim of our study was to histopathologically and immunohistochemically evaluate the patterns of 532- and 1064-nm MLA-type, picosecond laser-induced tissue reactions in human skin immediately after treatment. Picosecond neodymium:yttrium-aluminum-garnet (Nd:YAG) laser treatment using an MLA-type beam at the wavelengths of 532 nm and 1064 nm was delivered ex vivo to human skin.

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Inflammation mediated by the innate immune system is an organism's protective mechanism against infectious environmental risk factors. It is also a driver of the pathogeneses of various human diseases, including cancer development and progression. Microalgae are increasingly being focused on as sources of bioactive molecules with therapeutic potential against various diseases.

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Lobaric acid and lobarstin, secondary metabolites derived from the antarctic lichen , exert various biological activities, including antitumor, anti-proliferation, anti-inflammation, and antioxidant activities. However, the underlying mechanisms of these effects have not yet been elucidated in human cervix adenocarcinoma and human colon carcinoma. In the present study, we evaluated the anticancer effects of lobaric acid and lobarstin on human cervix adenocarcinoma HeLa cells and colon carcinoma HCT116 cells.

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Background: Cancer is a leading cause of human death around the world and occurs through the highly complex coordination of multiple cellular pathways. Recent studies have revealed that microalgal extracts exhibit considerable pharmaceutical activities, including those against various cancer cells. Thus, microalgae are promising candidates as novel cancer therapeutic drugs.

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Colorectal cancer is a leading cause of death worldwide and occurs through the highly complex coordination of multiple cellular pathways, resulting in carcinogenesis. Recent studies have increasingly revealed that constituents of lichen extracts exhibit potent pharmaceutical activities, including anticancer activity against various cancer cells, making them promising candidates for new anticancer therapeutic drugs. The main objective of this study was to evaluate the anticancer capacities of ramalin, a secondary metabolite from the Antarctic lichen , in the human colorectal cancer cell line HCT116.

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Zingiber mioga (Thunb.) Roscoe (ZM) is a traditional medicine, used to treat inflammatory diseases. The present study aimed to evaluate the inhibitory effects of ZM on the inflammatory response in lipopolysaccharide (LPS)‑stimulated RAW264.

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Thuja orientalis (TO) may be used as a herbal remedy for the treatment of numerous inflammatory diseases. In the present study, the effects of TO were evaluated on airway inflammation in ovalbumin (OVA)‑induced allergic asthma and RAW264.7 murine macrophage cells.

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Article Synopsis
  • Callicarpa japonica Thunb. (CJT) is recognized for its traditional use in treating inflammatory diseases, and this study explores its anti-inflammatory effects.
  • CJT significantly reduced nitric oxide and interleukin-6 levels in LPS-stimulated RAW264.7 cells and decreased inflammatory markers in a mouse model of acute lung injury.
  • The findings suggest that CJT could be a potential treatment for conditions like pneumonia by inhibiting inflammation.
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Physalis alkekengi has been traditionally used for the treatment of coughs, middle ear infections, and sore throats in Korea, Europe, and China. It exhibits a variety of pharmacological activities such as anti-inflammatory, anti-oxidant, and anti-cancer effects. The anti-inflammatory effects of the P.

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The incidence of chronic obstructive pulmonary disease (COPD) has substantially increased in recent decade. Cigarette smoke (CS) is the most important risk factor in the development of COPD. In this study, we investigated the effects of melatonin on the development of COPD using a CS and lipopolysaccharide (LPS)-induced COPD model and cigarette smoke condensate (CSC)-stimulated NCI-H292 cells, a human mucoepidermoid carcinoma cell.

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Siegesbeckia glabrescens (SG) is a plant growing in Korea that is used as a traditional medicine for various inflammatory diseases. In this study, we investigated the protective effects of SG extract on allergic asthma in an ovalbumin (OVA)-induced asthma murine model and lipopolysaccharide (LPS)-stimulated RAW264.7 cells.

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Picrasma quassioides (D.Don) Benn. (PQ) is used in traditional medicine for the treatment of inflammatory conditions, including gastritis.

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