정만기 교수
Jeong Man-ki
성균관대학교 의학과 · 의학
연구실 소개
정만기 교수의 연구실은 두드러진 암 생물학적 기전과 치료 반응 예측을 중심으로, 구강·두경부암의 종양 미세환경, 면역조절 메커니즘, 그리고 방사선 치료의 부작용 완화를 다룹니다. 특히 대사 활성 부위의 양적 평가, PD-L1 및 T세포 침윤과 같은 면역생물지표의 변화, CD271을 통한 전이성 행동 조절 메커니즘 등 종양의 치료 반응과 전이에 영향을 미치는 분자 기반 요법을 연구하고 있습니다. 또한 방사선 치료 중 발생하는 구강건조증 예방을 위한 항산화제 보조요법의 임상적 효능을 평가하는 실용적 연구도 병행하고 있습니다.
연구 현황
연구 성과 추이
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
주요 논문
15PURPOSE: This study aimed to investigate whether metabolic tumor volume (MTV) measured from [(18)F]-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) predicts short-term outcome to radiotherapy with or without chemotherapy and disease-free survival (DFS) in patients with pharyngeal cancers. EXPERIMENTAL DESIGN: The MTVs of primary sites with or without neck nodes were measured in 82 patients. Short-term outcome was assessed using the treatment response evaluation b
Abstract Programmed death-ligand 1 (PD-L1) expression and CD8-positive tumor-infiltrating lymphocyte (CD8 + TIL) infiltration are essential biomarkers for immune checkpoint inhibitor therapy. The objective of this study was to compare the expression of those biomarkers between initial and recurrent HNSCCs using paired analysis. Prognostic significance of those immunological changes was also investigated. Forty-two consecutive patients with locally recurrent HNSCCs were included. Immunohistochemi
Abstract Purpose: Head and neck squamous cell carcinoma (HNSCC) is comprised of heterogeneous populations of cells, and CD271 (NGFR; p75NTR) has been associated with a tumor-initiating cell subpopulation. This study assessed the role of CD271 in modulating metastatic behavior in HNSCC. Experimental Design: CD271 was overexpressed in murine and human oral squamous cell carcinoma cells to assess the impact of CD271 activation on the invasive and metastatic phenotype of these cells, using in vitro
OBJECTIVE: The present study was conducted to determine the preventive efficacy of vitamin C/E complex supplementation for radiotherapy (RT)-induced xerostomia in patients with head and neck cancer. STUDY DESIGN: Prospective, double-blinded, randomized, placebo-controlled study. SETTING: A single tertiary referral institution. SUBJECTS AND METHODS: The trial group (n = 25) received antioxidant supplements (100 IU of vitamin E + 500 mg of vitamin C) twice per day during RT, while the control grou
Background: The number of thyroidectomies in South Korea has been increasing rapidly due to extensive checkups for thyroid cancer. However, few studies have examined the association between thyroidectomy and major depressive disorder (MDD). We investigated the association between thyroidectomy and the risk of MDD. Methods: A population-based electronic medical records database from South Korea was used to identify 187,176 individuals who underwent partial or total thyroidectomy between 2009 and
Given higher false negative cases in the application phase, stringent strategy of follow-up and salvage treatment is mandatory to maintain acceptable outcomes.
OBJECTIVE: The aim of this study was to determine how long postoperative pulmonary care is needed in patients after rigid bronchoscopic retrieval of foreign body from the airway and to identify the factors affecting pulmonary recovery. MATERIALS AND METHOD: A retrospective review of 98 pediatric patients who had foreign body removed from the airway by rigid bronchoscopic procedure was conducted. After the removal of the foreign body, the time required for complete clinical and radiologic pulmona
Background and Objectives To present treatment outcomes and prognostic factors for surgical management of locally advanced differentiated thyroid cancer (DTC). METHODS: Retrospective review of 70 patients in a single, tertiary referral institution was done. Clinical pathology characteristics were analyzed to investigate prognosticators, based on primary endpoints; locoregional recurrence alone (LRR), total recurrence (LRR or distant metastasis (DM)), and recurrence-free survival. RESULTS: Recurr
BACKGROUND: The aim of this study was to investigate the correlation between lymphatic vessel density in squamous cell carcinoma of the tongue and regional metastasis. METHODS: Intratumoral and peritumoral lymphatic densities (ILDs and PLDs, respectively) were determined by immunohistochemical staining of lymphatic endothelial cells with podoplanin in 62 patients surgically treated for tongue cancer. Clinicopathological variables were quantified, and their correlations with regional metastasis w
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