Interaction between vitamin E intake and a COMT gene variant on colorectal cancer risk among Korean adults: a case-control study

Shinyoung Jun(Shinyoung Jun),Madhawa Gunathilake(Madhawa Gunathilake ),Jeonghee Lee(Jeonghee Lee),Jae Hwan Oh(Jae Hwan Oh),Hee Jin Chang(Hee Jin Chang),Dae Kyung Sohn(Dae Kyung Sohn),Aesun Shin(Aesun 한국역학회 2023 Epidemiology and Health Vol.45 No.-

OBJECTIVES: Previous human trials have not supported the anticarcinogenic effect of vitamin E despite biological plausibility and considerable epidemiological evidence. A possible explanation for this inconsistency is the interactive effect of the catechol-O-methyltransferase (COMT) gene and supplemental vitamin E on cancer. We examined whether a COMT gene variant modulates the effect of dietary vitamin E intake on colorectal cancer (CRC) risk. METHODS: In this case-control study of Korean adults (975 cases and 975 age- and sex-matched controls), dietary vitamin E density (mg/1,000 kcal) was measured using a semiquantitative food frequency questionnaire, COMT single nucleotide polymorphism (SNP) rs740603 (A>G) was genotyped, and CRC was verified histologically. We estimated odds ratios (ORs) and 95% confidence intervals (CIs) using unconditional logistic regression models with adjustments for potential confounders. RESULTS: Higher vitamin E density was associated with a lower risk of CRC (highest vs. lowest quartiles: OR, 0.72; 95% CI, 0.55 to 0.96; p-for-trend=0.002). When stratified by COMT SNP rs740603 genotype, the inverse association between vitamin E density and CRC risk was confined to those with at least 1 A allele (≥median vs. <median: OR, 0.63; 95% CI, 0.51 to 0.78). The interaction between rs740603 and vitamin E density was significant (p-for-interaction=0.020). No direct association was observed between COMT SNP rs740603 and CRC risk (OR, 1.08; 95% CI, 0.83 to 1.41). CONCLUSIONS: Our findings support a role for a genetic polymorphism in COMT in modifying the association between dietary vitamin E intake and CRC.

Association of the inflammatory balance of diet and lifestyle with colorectal cancer among Korean adults: a case-control study

Shinyoung Jun,Jeonghee Lee,Jae Hwan Oh,Hee Jin Chang,Dae Kyung Sohn,Aesun Shin,Jeongseon Kim 한국역학회 2022 Epidemiology and Health Vol.44 No.-

OBJECTIVES Dietary and lifestyle exposures may affect the risk of colorectal cancer (CRC) by promoting chronic inflammation. Therefore, we assessed the separate and joint associations of dietary and lifestyle inflammation scores (DIS and LIS, respectively) with CRC. METHODS Data from 919 pathologically confirmed CRC cases and 1,846 age- and sex-matched controls recruited at the National Cancer Center Korea were analyzed. We calculated the DIS and LIS, which characterize the collective contributions of 19 dietary and 4 lifestyle factors, respectively, to systemic inflammation by applying weights based on high-sensitivity C-reactive protein. A higher score represented a higher balance of pro- to anti-inflammatory exposures. Unconditional logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for CRC risk compared across the DIS and LIS tertile categories, with the lowest tertile as the reference group. RESULTS The highest DIS tertile had significantly increased odds of having CRC (OR, 2.65; 95% CI, 2.10 to 3.36), and the odds increased with increasing DIS. The highest LIS tertile group had 1.28-fold higher odds of having CRC (95% CI, 1.03 to 1.58). In the cross-classification analysis, the odds of having CRC increased as the DIS and LIS jointly increased until the DIS reached the highest tertile, where the risk was very high (3-fold or more) regardless of the LIS. CONCLUSIONS In conclusion, a higher balance of pro-inflammatory relative to anti-inflammatory dietary and lifestyle factors, especially dietary factors, was associated with higher CRC risk among Korean adults.

Estimation of dietary flavonoid intake and major food sources of Korean adults

Jun, Shinyoung,Shin, Sangah,Joung, Hyojee Cambridge University Press 2016 The British journal of nutrition Vol.115 No.3

<B>Abstract</B><P>Epidemiological studies have suggested that flavonoids exhibit preventive effects on degenerative diseases. However, lack of sufficient data on flavonoid intake has limited evaluating the proposed effects in populations. Therefore, we aimed to estimate the total and individual flavonoid intakes among Korean adults and determine the major dietary sources of these flavonoids. We constructed a flavonoid database of common Korean foods, based on the food list reported in the 24-h recall of the Korea National Health and Nutrition Examination Survey (KNHANES) 2007-2012, using data from the Korea Functional Food Composition Table, US Department of Agriculture flavonoid database, Phenol-Explorer database and other analytical studies. This database, which covers 49 % of food items and 76 % of food intake, was linked with the 24-h recall data of 33 581 subjects aged ≥19 years in the KNHANES 2007-2012. The mean daily intake of total flavonoids in Korean adults was 318·0 mg/d, from proanthocyanidins (22·3 %), flavonols (20·3 %), isoflavones (18·1 %), flavan-3-ols (16·2 %), anthocyanidins (11·6 %), flavanones (11·3 %) and flavones (0·3 %). The major contributing food groups to the flavonoid intake were fruits (54·4 %), vegetables (20·5 %), legumes and legume products (16·2 %) and beverages and alcohols (3·1 %), and the major contributing food items were apples (21·9 %), mandarins (12·5 %), tofu (11·5 %), onions (9·6 %) and grapes (9·0 %). In the regression analysis, the consumption of legumes and legume products, vegetables and fruits predicted total flavonoid intake the most. The findings of this study could facilitate further investigation on the health benefits of flavonoids and provide the basic information for establishing recommended flavonoid intakes for Koreans.</P>

버스 운전기사의 근무환경이 건강행태에 미치는 영향

전신영(Shinyoung Jun),정상원(Sangwon Chung),하경호(Kyungho Ha),이은지(Eunji Lee),정효지(Hyojee Joung) 서울대학교 보건환경연구소 2015 보건학논집 Vol.52 No.2

한국 성인의 식품안정성에 따른 플라보노이드 섭취 실태

전신영(Jun, Shinyoung),홍은주(Hong, Eunju),정효지(Joung, Hyojee) 한국영양학회 2015 Journal of Nutrition and Health Vol.48 No.6

본 연구는 우리나라 성인의 식품안정성에 따른 플라보노이드 섭취 실태를 분석하고자 하였다. 이를 위해 제 4, 5기 (2007~2012) 국민건강영양조사 자료와 한국인 상용식품의 플라보노이드 데이터베이스를 이용하여 식품안정성에 따른 총 플라보노이드 및 개별 플라보노이드 섭취량, 식품군 섭취량, 주요 급원 식품군 및 10개 식품을 분석하였다. 국민건강영양조사 식생활형편 문항을 이용하여 대상자를 식품안정성 확보군과 미확보군으로 구분하여 분석한 결과, 남녀 모두에서 연령, 조사기수, 가구 소득수준, 교육수준, 월간음주 여부, 식이보충제 복용 여부, 외식 빈도에 따른 두 군의 분포에 유의한 차이가 발견되었다. 남녀 모두 총 플라보노이드, 플라보놀, 플라본, 플라바논, 플라바놀, 이소플라본, 프로안토시아니딘 섭취량이 식품안정성 미확보군에서 유의하게 낮았고, 총 섭취 열량을 보정한 후에는 총 플라보노이드, 플라본, 플라바논, 플라바놀 섭취량만 유의하게 낮았다. 총 열량 보정 후, 안토시아니딘과 프로안토시아니딘은 여성에서만 식품안정성 미확보군의 섭취량이 유의하게 낮았다. 총 플라보노이드 섭취량은 식품안정성 수준이 불량할수록 낮아지는 경향도 발견되었다. 식품안정성 미확보군은 식품안정성 확보군보다 채소류, 과일류 등의 섭취량이 유의하게 낮았고, 과일류, 채소류로부터 섭취한 플라보노이드의 양이 유의하게 적었다. 식품안정성 확보군의 주요 급원 식품은 사과 (20.7%), 귤 (12.0%), 두부 (11.5%) 등이며, 식품안정성 미확보군의 주요 급원식품은 사과 (14.9%), 두부 (13.3%), 귤 (12.6%) 등으로, 미확보군의 플라보노이드 섭취에 기여하는 식품 중 두류 및 그 제품의 비율이 비교적 높고, 과일류의 비율이 비교적 낮았다. 이상의 결과에서 식품안정성과 플라보노이드 섭취량에 연관성이 있음을 알 수 있었고, 이는 식품안정성에 따른 식품 섭취의 차이에서 기인하는 것으로 파악되었다. 추후 더욱 정확한 식품안정성 조사 자료와 더욱 포괄적인 파이토케미컬 섭취 자료를 이용한 연구가 수행되면 식품안정성에 따른 식사의 질 차이에 대한 이해가 높아질 것으로 기대된다. Purpose: The aim of this study was to examine the association of food security with the total and individual flavonoid intakes among Korean adults. Methods: Study subjects were 13,454 men and 19,563 women aged 19 years and older who participated in the 2007~2012 Korea National Health and Nutrition Examination Survey. Subjects were classified into foodsecure and food-insecure groups using the answers to a self-reported question on food sufficiency of subjects" household. The total and individual flavonoid intakes were calculated by linking 24-h dietary recall data of subjects with a flavonoid database. Mean differences in dietary outcomes by food security status, and major food sources of total flavonoids were examined. Results: In this cross-sectional study, 5.8% of male adults and 6.6% of female adults were in food insecure households. Mean daily intakes of total flavonoids, flavonols, flavones, flavanones, flavan-3-ols, isoflavones, and proanthocyanidins were significantly lower in food-insecure groups than food-secure groups among both male and female adults. The differences were maintained in total flavonoids, flavones, flavanones, and flavan-3-ols after adjusting for total energy intake. Mean intakes of fruits and vegetables were significantly lower in food-insecure groups and the total flavonoid intake from fruits and vegetables was also significantly lower in food-insecure groups. The major food sources of total flavonoids were apples (20.7%), mandarines (12.0%), and tofu (11.5%) in the food-secure group, and apples (14.9%), tofu (13.3%), and mandarines (12.6%) in the food-insecure group. Conclusion: This study showed that food insecurity was associated with lower intakes of flavonoids and reduced intakes of fruits and vegetables in a representative Korean population.

A ruthenium-based plasmonic hybrid photocatalyst for aqueous carbon dioxide conversion with a high reaction rate and selectivity

Jun, Hwiseok,Choi, Shinyoung,Yang, Moon Young,Nam, Yoon Sung The Royal Society of Chemistry 2019 Journal of Materials Chemistry A Vol.7 No.29

<P>Photocatalytic CO2 conversion has been paid great attention in an effort to produce renewable hydrocarbon fuels in a sustainable manner using solar energy. However, new catalytic materials still need to be developed to improve the conversion efficiency, selectivity, and stability for practical applications. Here we report a ruthenium-based asymmetric catalyst immobilized onto a plasmonic Au/TiO2 heterostructure to efficiently and selectively convert CO2 into formic acid in an aqueous solution. The plasmonic heterostructure promotes multi-electron transfer towards the catalyst through efficient charge separation at a Schottky junction. The ruthenium complex is stably immobilized onto the heterostructure by two phosphonate groups, and the catalytic centre is stabilized by bidentate π-backbonding. The photocatalytic structure exhibits a high turnover frequency of 1200 h<SUP>−1</SUP> at 360 mW cm<SUP>−2</SUP>, a superior selectivity towards formic acid (∼95%) even at a low pH (∼pH 3), and a remarkable reusability over 50 hours without loss of the catalytic activity.</P>

COBLOC: 한부모가정의 부모와 자녀 간 소통을 위한 감정 블록

모신영(Shinyoung Mo),허정(Jung Huh),원하연(Helena Hayoun Won),전수진(Soojun Jun) 한국HCI학회 2016 한국HCI학회 학술대회 Vol.2016 No.1

Prevalence and Factors Associated with Neck and Jaw Muscle Modulation of Tinnitus

Won, Jun Yeon,Yoo, Shinyoung,Lee, Seok Ki,Choi, Hyun Kyung,Yakunina, Natalia,Le, Quang,Nam, Eui-Cheol S. Karger AG 2013 Audiology & neuro-otology Vol.18 No.4

<P>Abstract</P><P>Forceful contractions of neck and jaw muscles have consistently been shown to modulate tinnitus and can be used to screen patients who are responsive to somatic stimulation and, therefore, optimal candidates for somatosensory-based treatment. To identify the factors associated with somatic modulation of tinnitus, 163 patients underwent 19 neck and jaw maneuvers after an extensive physiological and audiological profile was compiled. Overall, tinnitus was modulated in 57.1% of ears tested. Unilateral tinnitus showed greater prevalence of modulation. Neck maneuvers generally decreased tinnitus loudness, whereas jaw maneuvers increased loudness. Female gender and buzzing tinnitus were associated with a high prevalence of modulation and a decrease in tinnitus loudness. Loud tinnitus and low-pitched tonal tinnitus were associated with exacerbation of the condition as a result of somatic testing. Use of these characteristics to select optimal candidates for somatosensory-based tinnitus therapies may be essential for the development of an effective approach for tinnitus treatment.</P><P>Copyright © 2013 S. Karger AG, Basel</P>

All-Dry Transfer of Graphene Film by van der Waals Interactions

Yang, Seong-Jun,Choi, Shinyoung,Odongo Ngome, Francis Okello,Kim, Ki-Jeong,Choi, Si-Young,Kim, Cheol-Joo American Chemical Society 2019 NANO LETTERS Vol.19 No.6

<P>We report a method that uses van der Waals interactions to transfer continuous, high-quality graphene films from Ge(110) to a different substrate held by hexagonal boron nitride carriers in a clean, dry environment. The transferred films are uniform and continuous with low defect density and few charge puddles. The transfer is effective because of the weak interfacial adhesion energy between graphene and Ge. Based on the minimum strain energy required for the isolation of film, the upper limit of the interfacial adhesion energy is estimated to be 23 meV per carbon atom, which makes graphene/Ge(110) the first as-grown graphene film that has a substrate adhesion energy lower than that of typical van der Waals interactions between layered materials. Our results suggest that graphene on Ge can serve as an ideal material platform to be integrated with other material systems by a clean assembly process.</P> [FIG OMISSION]</BR>

Patterned ZnO and full-color RGB colloidal quantum dot photodetector

Soonkyu Cha,Shinyoung Jeong,Seong Jun Kang,Young Dong Kim,Il Ki Han 한국진공학회 2018 한국진공학회 학술발표회초록집 Vol.2018 No.8