June Choi
고려대학교 의과대학 · 신경과학
June Choi 교수의 연구실은 심혈관 영상 및 청각 손상의 분자 기전에 중점을 두고 있으며, 특히 코chl라에서의 산화 스트레스와 세포 사멸 메커니즘을 규명하는 데 주력하고 있습니다. CCTA를 활용한 관상동맥 협착의 생리적 평가 및 항암제 시슬플라틴이 유발하는 청력 손상에 대한 보호 작용을 연구하며, 약물(예: 아포니닌, 퀽세틴)의 청신경 보호 효과를 동물 모델을 통해 검증하고 있습니다. 이는 청력 보존을 위한 새로운 치료 전략 개발에 기여하고자 하는 연구 목표를 가지고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Intracoronary attenuation-based CCTA analyses, TAG and CCO, showed moderate correlation with physiological coronary artery stenosis. The incremental value of TAG or CCO to the evaluation of haemodynamically stenosis by CCTA seemed to be limited.
Our results suggest that there is a relationship between a spike and the loss of residual hearing. It seems that rises in impedance can reflect pathology within the inner ear and predict the future loss of residual hearing.
- The authors briefly summarize the histologic features and differential diagnoses of common cutaneous spindle cell neoplasms.
Cisplatin is a very effective anticancer drug and generates reactive oxygen species (ROS) such as superoxide anions that can deplete antioxidant protective molecules in the cochlea. These processes result in the death of cochlear hair cells by induction of apoptosis. Apocynin, which is used as a specific nicotinamide adenine dinucleotide phosphate oxidase inhibitor, has a preventive effect for intracellular ROS generation. In this study, the effect of apocynin was investigated in a cochlear orga
In conclusion, quercetin showed protective effects against cisplatin-induced toxicity in a zebrafish model. The results of this study suggest the possibility of a protective role of quercetin against cisplatin-induced apoptotic cell death in zebrafish.
The healing ratio of the TM showed no significant difference between the two groups, but the time to heal was significantly shorter in the ESM patch group than in the perforation edge approximation group.
Percutaneous transhepatic cholangioscopy (PTCS) is the most widely used modality for diagnosis and treatment of biliary disease. Although many other novel technologies have been developed based on recent advances in endoscopy, PTCS has its own role. In diagnostics, PTCS is used for evaluation of indeterminate biliary strictures, bile duct tumors, and postoperative biliary strictures that cannot be reached by a peroral approach. In therapeutics, the removal of bile duct stones, dilatation of bile
Low frequency hearing loss responded better than high frequency loss to PTA. When we analyzed pure tone audiogram patterns, all patterns except for the descending type showed better improvement in patients with lower frequency hearing loss than in patients with higher frequency hearing loss.
Aminoglycosides such as neomycin are one of the most commonly prescribed types of antibiotics worldwide. However, these drugs appear to generate free radicals within the inner ear, which can result in permanent hearing loss. We evaluated the effects of edaravone, a neuroprotective agent, on neomycin-induced ototoxicity in transgenic zebrafish. The 5-day post fertilization (dpf) zebrafish larvae were exposed to 125 μM neomycin and various concentrations of edaravone for 1 h. Hair cell survival wa
Aims and background The receptor for advanced glycation end products (RAGE) is a multiligand cell surface receptor of the immunoglobulin superfamily and a newly recognized invasion-related gene. High mobility group box-1 (HMGB-1) is a 30-kD protein binding to RAGE and acting as a transcription-factor-like protein that regulates the expression of several genes. In this study, the interaction effect between RAGE and HMGB-1 on the migration of SCC7 cells was investigated along with the inhibitory e
RAGE and HMGB-1 were expressed in almost all human head and neck SCC tissues and in SCC7 cells as detected by immunostaining. The migration assay showed that the interaction between RAGE and HMGB-1 increased SCC7 migration activity depending on the level of HMGB-1, and nifedipine inhibited the interaction effect between RAGE and HMGB-1 on SCC7 cells in a dose-dependent manner. The interaction between RAGE and HMGB-1 could be closely associated with metastasis of SCC of the head and neck. Nifedip