Jeong Hwee Choi

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INTRODUCTION High-intensity focused ultrasound (HIFU) and radiofrequency (RF) are used for non-invasive skin tightening. Neocollagenesis and neoelastogenesis have been reported to have a mechanism of controlled thermal injury. OBJECTIVE To compare neocollagenesis and neoelastogenesis in each layer of the dermis after each session of HIFU and monopolar RF.(More)
BACKGROUND The microthermal zone (MTZ) produced by fractional device have been mostly evaluated through histopathologic analysis. Study of ablative type MTZ created by fractional device and skin thermal interaction using in vivo reflectance confocal microscopy (RCM) has been rarely reported. OBJECTIVES We evaluated the in vivo human RCM skin images of(More)
INTRODUCTION Fractional photothermolysis induces microscopic, localized thermal injury in the skin surrounded by undamaged viable tissue in order to promote wound healing. OBJECTIVE This study evaluated acute histologic changes following each single pass of various fractional lasers and radiofrequency (RF). METHODS Three male domestic swine were used.(More)
Psoriasis is a disorder caused by genetic and immunological factors. Leptin, a peptide hormone secreted predominantly from adipose tissue, regulates energy intake and expenditure, as well as the T-helper response. There have been conflicting reports regarding serum levels of leptin and adiponectin in patients with psoriasis. In the present study, we(More)
BACKGROUND Many comparative studies of chemical peeling and dermabrasion have been reported. However, rare basic scientific data about the immediate effects after combined treatment with chemical peeling and dermabrasion have been confirmed. OBJECTIVES The aim of this study is to evaluate the effect of the application of physical abrasion in combination(More)
Vol. 29, No. 1, 2017 111 Received July 29, 2015, Revised December 31, 2015, Accepted for publication January 6, 2016 Corresponding author: Nack In Kim, Department of Dermatology, Kyung Hee University Medical Center, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea. Tel: 82-2-958-8501, Fax: 82-2-969-6538, E-mail: nikim@khmc.or.kr This is an Open Access(More)
Dilated pores can be an early sign of skin aging and are a significant cosmetic concern. The 1410-nm wavelength is optimal for superficial dermal treatments up to 650 μm deep. The aim of the present study was to evaluate the clinical effectiveness and safety of the fractional erbium-doped fiber 1410-nm laser in the treatment of dilated pores. Fifteen(More)
The heat shock 70 kDa protein 1B (HSPA1B), which has been well-studied among the famous heat shock proteins HSPA1A/B/L, is related to autoimmune diseases, including Alopecia Areata (AA). In this study, the association of a 5'-untranslated region (5'UTR) SNP rs6457452 and a promoter SNP rs2763979 (-1140C > T) of HSPA1B with AA was investigated in 236(More)
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