Search results for: Sang Ho Oh

Items from 1 to 20 out of 132 results

article

Unit‐Cell‐Thickness Electron Confinement by Geometrically Constrained Antipolar Ordering

Yaolong Xing, Jaejin Hwang, Kyeong Tae Kang, Woo Seok Choi, more

Advanced Functional Materials > 34 > 44 > n/a - n/a

Achieving precise electron or spin confinement is essential for the progress of oxide electronics and emerging quantum information processing. While 2D electron confinement is commonly achieved with bare surfaces, heteroepitaxial interfaces, and charged domain walls, its practical application poses challenges, notably by diverse confinement widths, limited material selection, and the lack of freedom...

article

The effects of long‐pulsed alexandrite laser therapy on facial redness and skin microbiota compositions in rosacea: A prospective, multicentre, single‐arm clinical trial

Sujin Park, Hyunwoo Jang, Seol Hwa Seong, Ji Young Kim, more

Photodermatology, Photoimmunology & Photomedicine > 40 > 1 > n/a - n/a

Background Rosacea is a chronic skin disorder characterised by abnormal neurovasculature and inflammation in the central region of the face. The efficacy of pulsed‐dye laser and intense pulsed light treatments for rosacea have been demonstrated in several clinical trials. However, there is currently no research on the efficacy of long‐pulsed alexandrite laser (LPAL) therapy alone for rosacea‐related...

article

Knowledge and the behavioral patterns of photoprotection among Koreans with skin disease

Seong Jin Jo, Seong Rae Kim, Si Hyung Lee, Young‐Joon Seo, more

Photodermatology, Photoimmunology & Photomedicine > 40 > 1 > n/a - n/a

Background Photoprotection is crucial in preventing the development and progression of various skin diseases. However, patients with skin disease have limited awareness of photoprotection. We evaluated the knowledge and behavioral patterns of photoprotection among Koreans with skin diseases. Methods A cross‐sectional study was conducted in 11 general hospitals across South Korea. The study population...

article

Pigmented contact dermatitis and hair dyes: A retrospective case–control multicentre study in Korea

Myoung Shin Kim, Bo Young Chung, Sung Eun Chang, Sang Ho Oh, more

Journal of the European Academy of Dermatology and Venereology > 37 > 12 > 2543 - 2549

Background Pigmented contact dermatitis (PCD), a rare variant of non‐eczematous contact dermatitis, is clinically characterized by sudden‐onset brown or grey pigmentation on the face and neck. It is hypothesized to be caused by repeated contact with low levels of allergens. Objectives This study evaluated the risk of using hair dyes in patients with PCD in Korea. Methods A total of 1033 PCD patients...

article

Worldwide expert recommendations for the diagnosis and management of vitiligo: Position statement from the International Vitiligo Task Force Part 1: towards a new management algorithm

Nanja Geel, Reinhart Speeckaert, Alain Taïeb, Khaled Ezzedine, more

Journal of the European Academy of Dermatology and Venereology > 37 > 11 > 2173 - 2184

Background The treatment of vitiligo can be challenging and depends on several factors such as the subtype, disease activity, vitiligo extent, and treatment goals. Vitiligo usually requires a long‐term approach. To improve the management of vitiligo worldwide, a clear and up‐to‐date guide based on international consensus with uniform stepwise recommendations is needed. Objectives To reach an international...

article

Worldwide expert recommendations for the diagnosis and management of vitiligo: Position statement from the international Vitiligo Task Force—Part 2: Specific treatment recommendations

Julien Seneschal, Reinhart Speeckaert, Alain Taïeb, Albert Wolkerstorfer, more

Journal of the European Academy of Dermatology and Venereology > 37 > 11 > 2185 - 2195

Background The treatment of vitiligo can be challenging. Up‐to‐date agreed consensus recommendations on the use of topical and systemic therapies to facilitate the clinical management of vitiligo are currently lacking. Objectives To develop internationally agreed‐upon expert‐based recommendations for the treatment of vitiligo. Methods In this consensus statement, a consortium of 42 international...

article

Direct Observation of Atomic Step‐Assisted Stabilization of Polar Surfaces (Adv. Mater. 40/2023)

Zhipeng Wang, Jinho Byun, Zhen Wang, Yaolong Xing, more

Advanced Materials > 35 > 40 > n/a - n/a

Polar Oxide Surfaces In article number 2303051, Jaekwang Lee, Sang Ho Oh, and co‐workers discover a hitherto unknown stabilization mechanism of polar oxide surfaces using in situ atomic‐scale electron microscopy combined with atomic simulation. The dynamic motion of atomic steps, activated at a high temperature, converts the LaAlO₃ (001) polar surface to a nonpolar (015) vicinal surface via a step...

article

Direct Observation of Atomic Step‐Assisted Stabilization of Polar Surfaces

Zhipeng Wang, Jinho Byun, Zhen Wang, Yaolong Xing, more

Advanced Materials > 35 > 40 > n/a - n/a

Polar surfaces are intrinsically unstable and thus highly reactive due to the uncompensated surface charges. The charge compensation is accompanied by various surface reconstructions, establishing novel functionality for their applications. The present in situ atomic‐scale electron microscopy study directly shows that the atomic step and step‐assisted reconstruction play central roles in the charge...

article

Rapidly progressing generalized bullous fixed drug eruption after the first dose of COVID‐19 messenger RNA vaccination

Sooyeon Choi, Sung Hee Kim, Ji‐Hye Hwang, Hyun Woo Jang, more

The Journal of Dermatology > 50 > 9 > 1190 - 1193

Generalized bullous fixed drug eruption (GBFDE) is a rare type of life‐threatening severe cutaneous adverse reaction that is considered a medical emergency because of its potential lethality. Currently, only a few cases of bullous adverse reactions have been reported after coronavirus disease 2019 (COVID‐19) vaccination. We describe a patient with distinct clinical, histopathological, and immunological...

article

Combined use of energy‐based interventions with low‐dose isotretinoin for the treatment of inflammatory acne: An retrospective cohort analysis

Jemin Kim, Tunyaporn Jongudomsombat, Young In Lee, Jihee Kim, more

Journal of Cosmetic Dermatology > 21 > 10 > 4383 - 4391

Background The combined use of oral isotretinoin with energy‐based interventions including fractional microneedle radiofrequency, pulsed dye laser, and ablative fractional laser is an effective way to treat moderate‐to‐severe inflammatory acne lesions. However, studies regarding its efficacy and safety are limited. Aims This study aimed to assess the efficacy and safety of a treatment using low‐dose...

article

A randomized split‐face comparative study of long‐pulsed alexandrite plus low‐fluence Nd:YAG laser versus pulsed‐dye laser in the treatment of rosacea

Sujin Park, Joo Hee Lee, Eunji Kang, Hyun Kim, more

Lasers in Surgery and Medicine > 54 > 9 > 1217 - 1225

Objectives To compare the effectiveness of long‐pulsed alexandrite laser (LPAL) with that of pulsed‐dye laser (PDL) for rosacea. Methods This was a single‐blind randomized controlled trial on 27 patients who were clinically diagnosed with rosacea. Randomly assigned split face in each patient received four times monthly treatment of LPAL plus low‐fluence Nd:YAG with the contralateral side serving...

article

Shape‐Tuned Multiphoton‐Emitting InP Nanotetrapods (Adv. Mater. 19/2022)

Taehee Kim, Youngsik Kim, Seongmin Park, Kyoungwon Park, more

Advanced Materials > 34 > 19 > n/a - n/a

Nanophotonics As reported by Sohee Jeong, Dongho Kim, and co‐workers in article number 2110665, by tuning their shape, single‐crystalline InP nanocrystals undergo a transition from single‐ to multiphoton emitter. The geometric parameters of individual nanotetrapod particles drive a changeover of exciton confinement dimension. Interactions between multiple excitons in the tetrapodal geometry allow...

article

Shape‐Tuned Multiphoton‐Emitting InP Nanotetrapods

Taehee Kim, Youngsik Kim, Seongmin Park, Kyoungwon Park, more

Advanced Materials > 34 > 19 > n/a - n/a

As the properties of a semiconductor material depend on the fate of the excitons, manipulating exciton behavior is the primary objective of nanomaterials. Although nanocrystals exhibit unusual excitonic characteristics owing to strong spatial confinement, studying the interactions between excitons in a single nanoparticle remains challenging due to the rapidly vanishing multiexciton species. Here,...

article

Erythema multiforme‐like allergic contact dermatitis to rosewood

Sujin Park, Nu‐Ree Cha, Soo‐Chan Kim, Sang‐Ho Oh, more

Contact Dermatitis > 85 > 2 > 242 - 244

article

Non‐Ablative 1927 nm Fractional Thulium Fiber Laser: New, Promising Treatment Modality for Riehl's Melanosis

Su Min Kim, Shinwon Hwang, Abdurrahman Almurayshid, Min‐Young Park, more

Lasers in Surgery and Medicine > 53 > 5 > 640 - 646

Background and Objectives The treatment of Riehl's melanosis, also known as pigmented contact dermatitis, is highly challenging. Intense pulsed light (IPL) and 1064 nm Q‐switched Nd:Yag (QS‐Nd:YAG) laser are reported to have some efficacy. However, no single effective treatment has yet been identified. In this study, we demonstrated the efficacy and safety of the non‐ablative 1927 nm fractional thulium...

article

Development of evidence‐based consensus on critical issues in the management of patients with vitiligo: A modified Delphi study

Jung Min Bae, Ki‐Heon Jeong, Chong Won Choi, Ji Hun Park, more

Photodermatology, Photoimmunology & Photomedicine > 37 > 1 > 3 - 11

Background/purpose Vitiligo remains a major challenge in dermatology. However, much of the treatment remains unclear, because little evidence is available. We sought to answer some critical questions pertaining to management of vitiligo patients. Methods A modified Delphi process among 31 vitiligo experts was conducted. A total of 12 clinical vitiligo treatment questions without clear answers were...

article

Rare case of CD8+ CD56+ cytotoxic variant of mycosis fungoides clinically presenting with a combination of hypopigmentation and poikiloderma

Min‐Young Park, Shinwon Hwang, Jemin Kim, Abdurrahman I. Almurayshid, more

International Journal of Dermatology > 59 > 10 > e374 - e376

article

Epiregulin promotes hair growth via EGFR‐medicated epidermal and ErbB4‐mediated dermal stimulation

Nahyun Choi, Won‐Serk Kim, Sang Ho Oh, Jong‐Hyuk Sung

Cell Proliferation > 53 > 9 > n/a - n/a

Objectives EREG (epiregulin), a member of the epidermal growth factor (EGF) family, plays a role in inflammation, wound healing, normal physiology and malignancies. However, little is known about its function on hair growth. Materials and Methods Cell growth assay, QPCR and immunostaining were carried out. Telogen‐to‐anagen transition and organ culture were conducted. ROS level was monitored by...

article

Effective laser treatment options for argyria: Review of literatures

Abdurrahman Almurayshid, Sujin Park, Sang Ho Oh

Journal of Cosmetic Dermatology > 19 > 8 > 1877 - 1882

Background Argyria results from silver accumulation in the skin. It is a stressful condition for patients due to skin discoloration. In the past, no effective treatments were available. However, it has been recently reported laser treatments showed promising results. Aim To review and summarize all reported laser treatment options for argyria patients. Methods We reviewed all laser treatment...

article

Autophagy induction can regulate skin pigmentation by causing melanosome degradation in keratinocytes and melanocytes

Ji Young Kim, Jihee Kim, Yuri Ahn, Eun Jung Lee, more

Pigment Cell & Melanoma Research > 33 > 3 > 403 - 415

Autophagy regulates cellular turnover by disassembling unnecessary or dysfunctional constituents. Recent studies demonstrated that autophagy and its regulators play a wide variety of roles in melanocyte biology. Activation of autophagy is known to induce melanogenesis and regulate melanosome biogenesis in melanocytes. Also, autophagy induction was reported to regulate physiologic skin color via melanosome...

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INFONA - science communication portal

Search results for: Sang Ho Oh

Unit‐Cell‐Thickness Electron Confinement by Geometrically Constrained Antipolar Ordering

The effects of long‐pulsed alexandrite laser therapy on facial redness and skin microbiota compositions in rosacea: A prospective, multicentre, single‐arm clinical trial

Knowledge and the behavioral patterns of photoprotection among Koreans with skin disease

Pigmented contact dermatitis and hair dyes: A retrospective case–control multicentre study in Korea

Worldwide expert recommendations for the diagnosis and management of vitiligo: Position statement from the International Vitiligo Task Force Part 1: towards a new management algorithm

Worldwide expert recommendations for the diagnosis and management of vitiligo: Position statement from the international Vitiligo Task Force—Part 2: Specific treatment recommendations

Direct Observation of Atomic Step‐Assisted Stabilization of Polar Surfaces (Adv. Mater. 40/2023)

Direct Observation of Atomic Step‐Assisted Stabilization of Polar Surfaces

Rapidly progressing generalized bullous fixed drug eruption after the first dose of COVID‐19 messenger RNA vaccination

Combined use of energy‐based interventions with low‐dose isotretinoin for the treatment of inflammatory acne: An retrospective cohort analysis

A randomized split‐face comparative study of long‐pulsed alexandrite plus low‐fluence Nd:YAG laser versus pulsed‐dye laser in the treatment of rosacea

Shape‐Tuned Multiphoton‐Emitting InP Nanotetrapods (Adv. Mater. 19/2022)

Shape‐Tuned Multiphoton‐Emitting InP Nanotetrapods

Erythema multiforme‐like allergic contact dermatitis to rosewood

Non‐Ablative 1927 nm Fractional Thulium Fiber Laser: New, Promising Treatment Modality for Riehl's Melanosis

Development of evidence‐based consensus on critical issues in the management of patients with vitiligo: A modified Delphi study

Rare case of CD8+ CD56+ cytotoxic variant of mycosis fungoides clinically presenting with a combination of hypopigmentation and poikiloderma

Epiregulin promotes hair growth via EGFR‐medicated epidermal and ErbB4‐mediated dermal stimulation

Effective laser treatment options for argyria: Review of literatures

Autophagy induction can regulate skin pigmentation by causing melanosome degradation in keratinocytes and melanocytes

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