Phil Sang Chung

Dr. Phil Sang Chung

College of Medicine, Dankook University, Cheonan 31116, Republic of Korea

Research Focus & Metrics

Academic Career Length

33Years (1994-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 May 2019 in Clinical and Experimental Otorhinolaryngology
Verified
Journal Article
Open access
PDF file
YJYoung Hoon Joo
Young Hoon Joo
JCJae-Keun Cho
Jae-Keun Cho
BKBon Seok Koo
Bon Seok Koo
MKMinsu Kwon
Minsu Kwon
SKSeong Keun Kwon
Seong Keun Kwon
PCPhil Sang Chung
Phil Sang Chung
Korean Society of Thyroid-Head and Neck Surgery appointed a Task Force to provide guidance on the implementation of a surgical treatment of oral cancer. MEDLINE databases were searched for articles on subjects related to "surgical management of oral cancer" published in English. Results were restricted to systematic reviews, randomized control trials/controlled clinical trials, and observational studies. The quality of evidence was rated with use RoBANS (Risk of Bias Assessment Tool for Nonrandomized Studies) and AMSTAR (A Measurement Tool to Assess the Methodological Quality of Systematic Reviews). Evidence-based recommendations for practice were ranked according to the American College of Physicians grading system. Additional directives are provided as expert opinions and Delphi questionnaire when insufficient evidence existed. The Committee developed 68 evidence-based recommendations in 34 categories intended to assist clinicians and patients and counselors, and health policy-makers. Proper surgical treatment selection for oral cancer, which is directed by patient- and subsite-specific factors, remains the greatest predictor of successful treatment outcomes. These guidelines are intended for use in conjunction with the individual patient's treatment goals.

26 April 2019 in BMC Neuroscience
Verified
Journal Article
Open access
PDF file
YRYun-Hee Rhee
Yun-Hee Rhee
JMJeong Hwan Moon
Jeong Hwan Moon
JJJae Yun Jung
Jae Yun Jung
COConnie Oh
Connie Oh
JAJin-Chul Ahn
Jin-Chul Ahn
PCPhil Sang Chung
Phil Sang Chung
To determine whether photobiomodulation (PBM) rescued the disruption of Na+/Ca2+ homeostasis and mitochondrial membrane potential by ouabain; the Na, K-ATPase inhibitor. For PBM in this study, a 660 nm LED array was used at energy densities of 0.78, 1.56, 3.12, 6.24, and 9.36 J/cm2. HCN-2 neuronal cells treated with ouabain showed loss of cell polarity, disrupted cell morphology, and decreased cell viability, which were improved after PBM treatment. We found that ouabain-induced Na, K-ATPase inhibition promoted activation of downstream signaling through Src, Ras, and mitogen-activated protein kinase (MAPK), which were suppressed after PBM treatment. This provided evidence of Na, K-ATPase α-subunit inactivation and intracellular Ca2+ increase. In response to ouabain, we observed activation of Src and MAPK by Na, K-ATPase, decreased mitochondrial membrane potential, and Na+-dependent Ca2+ increases, which were restored by PBM treatment. This study demonstrated that Na+/K+ imbalance could be regulated by PBM treatment in neuronal cells, and we suggest that PBM is a potential therapeutic tool for Na, K-ATPase targeted neuronal diseases.

6 July 2018 in BMC Cell Biology
Verified
Journal Article
Open access
PDF file
YRYun-Hee Rhee
Yun-Hee Rhee
JMJeong Hwan Moon
Jeong Hwan Moon
JMJi-Hun Mo
Ji-Hun Mo
TPTiffany Pham
Tiffany Pham
PCPhil Sang Chung
Phil Sang Chung
Adipocyte differentiation of human mesenchymal stem cells (hMSCs) is dependent on mitochondrial metabolism and reactive oxygen species (ROS) to initiate adipocyte differentiation. Although anethole has been known as an anti-oxidant and lipid peroxidation inhibitor, there is little investigated about its role in adipogenic differentiation. The effects on cytotoxicity and proliferation of anethole in hMSCs were measured by the MTT assay. The anti-adipogenic effect of anethole on hMSCs was analyzed by Oil Red O staining and western blot analysis. The anti-oxidant activity of anethole on hMSC was assessed by flowcytometry and fluorescence staining using 2',7' –dichlorofluorescin diacetate (DCFDA). The western blotting was used to detect of phospho-Akt, phospho-mTOR, phospho-p70S6K, PPARγ, and phsopho-AMP-activated kinase (AMPK). Anethole suppressed the adipogenic differentiation of hMSCs through down-regulation of Akt-mTOR-p70S6K-PPARγ and up-regulation of AMPK. Anethole affected oxidative conditions through ROS generation. Anethole also rescued AMPK activity and reduced activation of mTOR-p70S6K-PPARγ under oxidative conditions in presence of exogenous hydrogen peroxide. ROS and mTOR regulation is a crucial factor in adipogenic differentiation, anethole has an important role in regulating activities of mTOR/PPARγ and ROS control in adipogenic differentiation of hMSCs.

9 November 2012 in Lasers in Surgery and Medicine
Verified
Journal Article
Closed access
PDF file
JAJin‐Chul Ahn
Jin‐Chul Ahn
RBRaktim Biswas
Raktim Biswas
PCPhil Sang Chung
Phil Sang Chung

16 December 2021 in Lasers in Surgery and Medicine
Verified
Journal Article
Closed access
PDF file
HRHyun Seok Ryu
Hyun Seok Ryu
NLNam Kyu Lim
Nam Kyu Lim
APAndrew Reyes Padalhin
Andrew Reyes Padalhin
CACeline Abueva
Celine Abueva
SPSo Young Park
So Young Park
SWSeung Hoon Woo
Seung Hoon Woo

1 March 2015 in Cytotherapy
Verified
Journal Article
Closed access
PDF file
IPIn-Su Park
In-Su Park
AMArindam Mondal
Arindam Mondal
PCPhil Sang Chung
Phil Sang Chung
JAJin-Chul Ahn
Jin-Chul Ahn