이승민 교수
Seungmin Lee
연세대학교 안과 · 의학
연구실 소개
이승민 교수의 연구실은 식품성분, 특히 두유와 식이섬유가 장내 미생물군 및 체내 대사 상태에 미치는 영향을 중심으로 연구를 진행하고 있습니다. 고콜레스테롤 식이에 의한 장막 투과성 및 염증 반응 완화, 항염증 및 수용성 식이섬유의 기능성 메커니즘을 규명하고 있으며, 발효두유의 항지질 효과와 관련된 분자생물학적 기전을 탐구하고 있습니다. 또한 노화와 관련된 미각 감각 변화 및 영양소 결핍과의 연관성에 대해서도 연구를 확장하고 있습니다.
연구 현황
연구 성과 추이
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주요 논문
15We sought to evaluate whether a soy milk and fiber mixture could improve high cholesterol diet-induced changes in gut microbiota and inflammation. Sprague-Dawley rats were administered four different diets: CTRL (AIN76A diet), CHOL (AIN76A with 1% (w/w) cholesterol), SOY (CHOL diet, 20% of which was substituted with freeze-dried soy milk), or S.FIBER (SOY diet with 1.2% (w/w) psyllium, 6.2% (w/w) resistant maltodextrin, and 6.2% (w/w) chicory powder). A lipid profile and gene expression analysis
Bladder cancer is one of the most common tumors of the genitourinary tract. Here, we use phage display to identify a peptide that targets bladder tumor cells. A phage library containing random peptides was screened for binding to cells from human bladder tumor xenografts. Phage clones were further selected for binding to a bladder tumor cell line in culture. Six clones displaying the consensus sequence CXNXDXR(X)/(R)C showed selective binding to cells from primary human bladder cancer tissue. Of
The induction of expression of many cellular immediate early genes (IEG) involves the transcription factor serum response factor (SRF). Two families of SRF coactivators have also been implicated in IEG induction, the ternary complex factors (TCFs), ELK1, Sap1, and Net, and the myocardin-related factors, MKL1 and MKL2. We found that serum induction of some SRF target genes is preferentially regulated by MKL1/2, whereas others are redundantly activated by both TCFs and MKL1/2. Yet ELK1 can also re
Aging has been implicated in the alteration of taste acuity. Diet can affect taste sensitivity. We aimed to investigate the types of tastes altered in elderly Korean people and factors associated with taste alteration in relation to dietary intake and other factors. Elderly participants (≥65 years) and young adults were assessed to determine their recognition thresholds (RT) for sweet, salty, bitter, sour, and umami tastes. Elderly participants were further surveyed for dietary intake and non-nu
We aimed to investigate whether in vitro fermentation of soy with L. plantarum could promote its beneficial effects on lipids at the molecular and physiological levels. Rats were fed an AIN76A diet containing 50% sucrose (w/w) (CTRL), a modified AIN76A diet supplemented with 1% (w/w) cholesterol (CHOL), or a CHOL diet where 20% casein was replaced with soy milk (SOY) or fermented soy milk (FSOY). Dietary isoflavone profiles, serum lipids, hepatic and fecal cholesterol, and tissue gene expression
The indices of D9D and D6D from erythrocyte membrane phospholipids and the proportion of saturated fatty acids were increased as the cardiovascular risk factors, including serum TG, blood pressures, and FBS increased their levels (IRB number C2014199 (1396)).
We investigated whether personalized dietary intervention could improve clinical measurements such as immune cell-mediated cytotoxicity, serum albumin, derivatives of reactive oxygen metabolites (D-ROMS), D-dimer, and fibrinogen. Cancer patients received either a treatment support diet (TD, for those with chemotherapy), or a remission support diet (RD; for those in remission) for at least 3 wk (21-61 days). Both diets were low glycemic, low fat, and high plant protein diets; the diet for the TD
Ultraviolet B (UVB) irradiation causes adverse effects on the skin. Corn silk contains flavonoids and other bioactive compounds and antioxidants, which may prevent skin photoaging through antioxidant and anti-inflammatory effects. We aimed to investigate the potential photoprotective effects of dietary corn silk on UVB-induced skin damage in mice and the mechanisms behind these effects on human skin cells. Oral administration of corn silk water extract (CS) (2 or 4 g/kg/day) for 19 weeks decreas
Long-term surveillance is necessary to identify patients at risk of developing secondary lymphedema after breast cancer surgery. We assessed how sodium selenite supplementation would affect breast cancer-related lymphedema (BCRL) symptoms and parameters in association with antioxidant effects. A randomized, double-blind, controlled trial was conducted on 26 participants with clinical stage II to III BCRL. The control group (CTRL, n = 12) and selenium group (SE, n = 14) underwent five sessions of
In this study, we developed reduced graphene oxide (rGO)-incorporated porous agarose (Ar-rGO) composites that were prepared via a "one-pot" sol-gel method involving a mixing and vacuum freeze-drying process. These composites represent an easy-to-use adsorbent for organic contaminant removal. Ar-rGOs can efficiently adsorb organic molecules, especially aromatic organic compounds from wastewater, because of the synergistic effect between the agarose bundles, which function as a water absorption si
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