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Yoon J, Chun J, Bhang SY. Internet Gaming Disorder and Mental Health Literacy: A Latent Profile Analysis of Korean Adolescents. Psychiatry Investig 2024; 21:300-310. [PMID: 38569588 PMCID: PMC10990622 DOI: 10.30773/pi.2023.0303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 12/14/2023] [Accepted: 01/14/2024] [Indexed: 04/05/2024] Open
Abstract
OBJECTIVE This study identified latent subtypes of mental health literacy (MHL) for Internet gaming disorder (IGD) and explored their characteristics and differences in various factors in adolescents. METHODS This study analyzed secondary data from the 2019 Youth Smart Digital Media Survey and included data from 1,936 middle and high school students (14-18 years old). Thirteen items of the MHL questionnaire were used for latent profile analysis. We compared the characteristics and predictors of the identified types using various statistical analyses, including one-way ANOVA, chi-square test, and multinomial logistic regression. RESULTS We identified three subtypes of MHL for IGD in adolescents: "low perception-prefer informal resources," "moderate perception-preferred resources unclear," and "high perception-prefer professional resources." Subtypes showed significant differences in sex, age, family affluence, e-learning time during weekdays, mental health risks, level of problematic smartphone use, and IGD. All variables except IGD predicted one or more latent types. CONCLUSION Practical interventions are required to improve IGD MHL, including customized prevention based on the differences between the three types.
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Affiliation(s)
- Jiyoung Yoon
- Department of Social Welfare, Ewha Womans University, Seoul, Republic of Korea
| | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Seoul, Republic of Korea
| | - Soo-Young Bhang
- Department of Psychiatry, Nowon Eulji University Hospital, Eulji University School of Medicine, Seoul, Republic of Korea
- Nowon Community Addiction Management Center, Seoul, Republic of Korea
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Hwang J, Chun J, Choi SH, Cho S, Kim JS. Patient-Specific Deep Learning Model for Clinical Target Volume Delineation on Daily CBCT of Breast Cancer Patients based on Intentional Deep Overfit Learning (IDOL) Framework. Int J Radiat Oncol Biol Phys 2023; 117:e181. [PMID: 37784804 DOI: 10.1016/j.ijrobp.2023.06.1034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Increasingly complex target volumes and the use of modern irradiation techniques emphasize the importance of daily image guidance more than ever. Significant progress has been made in adjuvant breast cancer radiotherapy (RT) and the need for optimized image guidance is growing. Furthermore, the position of the breast during RT after breast-conserving surgery is highly variable than expected. In this context, cone beam computed tomography (CBCT) is a very effective tool enabling prompt and accurate adaptive radiation therapy (ART). In this study, we aim to develop a deep learning (DL)-based algorithm to segment clinical target volume (CTV) from daily CBCT scans. Also, we validate the optimization of further learning when applying the Intentional Deep Overfit Learning (IDOL) framework. MATERIALS/METHODS A total of 240 different CBCT scans obtained from 100 breast cancer patients were used for this study. CTV was defined as whole breast plus margin in all patients. The workflow consists of two training stages: (1) training a novel 'generalized' DL model (Swin_UNETR) to identify and delineate breast CTV on CBCT scans using 90 breast cancer patient cases (2) applying an 'intentional overfitting' to the 'generalized' DL model to generate a 'patient-specific' model using the remaining 10 breast cancer patients. In this study, for the intentionally overfitting stage, we additionally trained with CBCT scans from the patient's 1st fraction to the 14th fractions cases. The results of the proposed method were compared quantitatively with the expert's contours on 1st-15th fractions CBCT scans using Dice Similarity Coefficient (DSC). RESULTS The average DSC between the 'generalized' DL model-based breast CTV contours and reference contours for the patient's 15th fraction was 0.9672. When implementing the IDOL framework with the CBCT scan obtained during the patient's 1st treatment, the average DSC was improved to 0.9809. When additional CBCT scans taken during each of the 1st to 6th fractions were used for training, the average DSC could be most effectively raised to 0.9835. The p-value comparison between the 'generalized' DL model and the 1st fraction was found to be 3.62E-04, while the comparison with the 6th fractions resulted in a p-value of 8.36E-05. The average time required for IDOL training using one CBCT scan and six CBCT scans was 107 seconds and 127 seconds, respectively. CONCLUSION In this study, we developed a patient-specific DL-based training algorithm to segment CTV in CBCT scans for breast cancer patients. The performance improvement was relatively significant and was confirmed that using continual DL with additional CBCT scans, which are taken every day, can be more accurate and efficient than drawing breast CTV using a general model. Our novel patient-specific model can be effectively applied to various ARTs by not only reducing labor and time but also increasing accuracy.
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Affiliation(s)
- J Hwang
- KAIST, Daejeon, Daejeon, Korea, Republic of (South) Korea
| | - J Chun
- Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S H Choi
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S Cho
- Korea Advanced Institute of Science and Technology, Daejeon, Korea, Republic of (South) Korea
| | - J S Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Lee S, Yoon J, Cho Y, Chun J. Systematic Review of Extended Reality Digital Therapy for Enhancing Mental Health Among South Korean Adolescents and Young Adults. Soa Chongsonyon Chongsin Uihak 2023; 34:204-214. [PMID: 37841488 PMCID: PMC10568184 DOI: 10.5765/jkacap.230046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/15/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023] Open
Abstract
Digital therapy using extended reality (XR) holds great promise for addressing the mental health needs of adolescents and young adults. This study addresses a notable research gap in South Korea by systematically reviewing XR-based digital therapy for the mental health of South Korean adolescents and young adults. We analyzed 26 studies encompassing various aspects, including study type, publication date, research field, research methodology, data sources, program types, program content, sample characteristics, target population, assessment tools, and program effectiveness. Notably, 46.15% of the studies employed an experimental design, whereas over 53% utilized non-experimental approaches. Experimental studies lacked a genuine design, standardized questionnaires, and control variables. Similarly, non-experimental studies failed to report specific literature selection criteria. Consequently, future studies should adopt rigorous methodologies to enhance reliability and validity. Moreover, over 85% of the 26 studies focused solely on virtual reality and did not incorporate augmented or mixed reality. This study identifies the limitations of the previous research. These findings emphasize the need for structured investigations to advance the development of XR-based digital therapy to promote mental health in adolescents and young adults in South Korea.
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Affiliation(s)
- Serim Lee
- Department of Social Welfare, Ewha Womans University, Seoul, Korea
| | - Jiyoung Yoon
- Department of Social Welfare, Ewha Womans University, Seoul, Korea
| | - Yeonjee Cho
- Department of Social Welfare, Ewha Womans University, Seoul, Korea
| | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Seoul, Korea
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Lee S, Lee J, Chun J. The child abuse reporting guideline compliance in Korean newspapers. Child Youth Serv Rev 2023; 151:107037. [PMID: 37305113 PMCID: PMC10228155 DOI: 10.1016/j.childyouth.2023.107037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 09/29/2022] [Accepted: 05/25/2023] [Indexed: 06/13/2023]
Abstract
The rate of child abuse has sharply increased worldwide, especially during the COVID-19 pandemic. As the media's role in addressing child abuse cases is crucial, several international and formal organizations have established child abuse reporting guidelines. This study investigated how closely journalists follow reporting guidelines in addressing child abuse cases. Five major Korean presses and 189 articles from January 1, 2018, to January 31, 2021, were selected using the keyword "child abuse." Each article was analyzed using a guideline framework consisting of 13 items regarding the five principles of the Korean Ministry of Health and Welfare and Central Child Protection Agency reporting guidelines. This study identified a radical growth in media reporting on child abuse cases in South Korea; almost 60% of the articles analyzed came from 2020 and 2021. More than 80% of the articles analyzed did not provide abuse resources, and 70% did not provide factual information. 57.1% of the articles instigated negative stereotypes, and about 30% explicitly mentioned certain family types in the headlines. Nearly 20% of the articles provided excessive details about the method used. Approximately 16% exposed victims' identities. Some articles (7.9%) also described victims as sharing responsibility for the abuse. This study indicates that the media reports of child abuse in South Korea did not follow the guidelines in many facets. The present study discusses the limitations of the current guidelines and suggests future directions for the news media in reporting on child abuse cases nationwide.
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Affiliation(s)
- Serim Lee
- Department of Social Welfare, Ewha Womans University, Republic of Korea
| | - Jieun Lee
- Department of Social Welfare, Ewha Womans University, Republic of Korea
| | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Republic of Korea
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Abstract
The outbreak of COVID-19 impacted numerous people globally, but most notably affected adolescents negatively by contributing to the increase in their use of media and smartphones and therefore their susceptibility to smartphone addiction. Based on the social-ecological model, this study seeks to identify the individual-, family-, and school-level factors of smartphone addiction through two groups of users: a first group whose smartphone usage time increased after the outbreak of COVID-19, and a second group whose usage time did not. Based on the data collected from 360 Korean adolescents aged 15 to 18, results reveal that personal-level factors (i.e., gender, depressive symptoms, self-control, and cyberbullying victimization) are associated with smartphone addiction. For the group whose smartphone usage time increased after the outbreak, economic status, academic performance, and academic year were related to smartphone addiction. Based on these findings, the study makes specific guidelines and suggestions on addressing the smartphone addiction among Korean adolescents.
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Affiliation(s)
- JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Seoul, Republic of Korea
| | - Hae Kook Lee
- Department of Psychiatry, College of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, Uijeongbu, Korea
| | - HyeSook Jeon
- Department of Social Welfare, Ewha Womans University, Seoul, Republic of Korea
| | - Jinyung Kim
- Department of Social Welfare, Ewha Womans University, Seoul, Republic of Korea
| | - Serim Lee
- Department of Social Welfare, Ewha Womans University, Seoul, Republic of Korea
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Kim S, Chun J. The Impact of Parental and Peer Attachment on Gaming Addiction among Out-of-School Adolescents in South Korea: The Mediating Role of Social Stigma. Int J Environ Res Public Health 2022; 20:72. [PMID: 36612398 PMCID: PMC9819542 DOI: 10.3390/ijerph20010072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/16/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Most studies on gaming addiction have targeted adolescents in schools, while studies on gaming addiction among out-of-school adolescents remain scarce. Therefore, this study investigated the influence of parental and peer attachment on gaming addiction, mediated by social stigma among Korean out-of-school adolescents. The Dropout Youth Panel Survey was used for a sample of 437 dropout adolescents. The results showed that out-of-school adolescents' social stigma fully mediated the relationship between parental and peer attachment and gaming addiction. Parental attachment significantly predicted out-of-school adolescents' gaming addiction by decreasing their social stigma. Peer attachment also influenced gaming addiction in out-of-school adolescents via the mediated effects of social stigma. No direct effect of parental and peer attachment on gaming addiction was found. Social stigma played an important role in decreasing levels of gaming addiction. In addition, our study revealed that the direct and total effects of parental attachment on gaming addiction were greater than the effect of peer attachment. This study empirically verified the importance of social stigma based on modified labeling theory and provides a valid mechanism to describe how Korean out-of-school adolescents develop gaming addictions. The findings suggest effective strategies for prevention and treatment for dropout adolescents in South Korea.
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Liang X, Chun J, Morgan H, Bai T, Nguyen D, Park J, Jiang S. Evaluating a Personalized Deep-Learning-Based Auto-Segmentation Method for CBCT-Based Adaptive Radiotherapy. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Choi M, Chang J, Kim K, Chun M, Chun J, Kim J, Shin K, Kim Y. Contouring Variations and the Role of Deep Learning-Based Auto-Contouring in Breast Cancer Radiation Therapy: A Multi-Institutional Planning Study. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kim J, Lee S, Chun J. An International Systematic Review of Prevalence, Risk, and Protective Factors Associated with Young People's E-Cigarette Use. Int J Environ Res Public Health 2022; 19:11570. [PMID: 36141845 PMCID: PMC9517489 DOI: 10.3390/ijerph191811570] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/05/2022] [Accepted: 09/09/2022] [Indexed: 06/06/2023]
Abstract
While the prevalence of young people's conventional cigarette use has decreased in many countries, the use of e-cigarettes has risen. To effectively counteract the growing popularity of e-cigarettes among young people internationally, researchers should know the exact prevalence as well as the protective and risk factors associated with vaping. Based on five eligibility criteria, 53 articles were chosen and analyzed by general characteristics, prevalence, sample characteristics, gender difference, protective factors, and risk factors. In this study, the international pooled prevalence of young people's lifetime e-cigarette use was 15.3%, the current use was 7.7%, and dual use was 4.0%. While the highest lifetime, current, and dual prevalence were found in Sweden, Canada, and the United Kingdom, respectively, the lowest prevalence was found in Germany, followed by South Korea and Sweden. Some protective and risk factors include perceived cost and danger of vaping, parental monitoring, internal developmental assets, cigarette use, family and peer smoking, exposure to online advertisements, and the presence of nearby retail stores. Based on this review, researchers and practitioners can develop different intervention programs and strategies for young smokers.
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Affiliation(s)
| | | | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
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Yoo S, Kim T, Chun J, Choi B, Kim H, Yang S, Yoon H, Kim J. Deep Learning-Based Automatic Detection and Segmentation of Gross Tumor for Stereotactic Ablative Radiotherapy in Small-Volume Brain Metastases. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lee J, Chun J, Kim J, Lee J, Lee S. A Social-Ecological Approach to Understanding the Relationship between Cyberbullying Victimization and Suicidal Ideation in South Korean Adolescents: The Moderating Effect of School Connectedness. Int J Environ Res Public Health 2021; 18:ijerph182010623. [PMID: 34682368 PMCID: PMC8535638 DOI: 10.3390/ijerph182010623] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 11/24/2022]
Abstract
Background: Cyberbullying victimization and suicidal ideation are both ongoing deleterious social problems in South Korea. Using the social-ecological approach, this study examined the association between cyberbullying victimization and suicidal ideation as well as the buffering role of school connectedness in this relationship. Methods: A nationally representative sample of 7333 adolescents from the 2016 Korean Children and Youth Right Study participated in the study. Data were analyzed using descriptive statistics, Wald chi-square test, bivariate correlations, and multivariate logistic regression analyses. Results: Nearly 17.7% of adolescents were cyberbullied, and 28.4% had suicidal ideation in the past 12 months. Cyberbullying victims were at an increased risk of suicidal ideation. The results also found that parental abuse, family dysfunction, and perceived peer relationship stress were positively associated with suicidal ideation, while parental support for autonomy was negatively associated with suicidal ideation. Further, school connectedness moderated on the relationship between cyberbullying victimization and adolescent suicidal ideation. Conclusions: These findings suggest that various stakeholders should consider interventions and preventive programs that address school connectedness when working with adolescents who are victims of cyberbullying and exhibit suicidal behavior.
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Affiliation(s)
- Jungup Lee
- Department of Social Work, National University of Singapore, Singapore 117570, Singapore
- Correspondence:
| | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Seoul 03760, Korea; (J.C.); (J.K.); (J.L.); (S.L.)
| | - Jinyung Kim
- Department of Social Welfare, Ewha Womans University, Seoul 03760, Korea; (J.C.); (J.K.); (J.L.); (S.L.)
| | - Jieun Lee
- Department of Social Welfare, Ewha Womans University, Seoul 03760, Korea; (J.C.); (J.K.); (J.L.); (S.L.)
| | - Serim Lee
- Department of Social Welfare, Ewha Womans University, Seoul 03760, Korea; (J.C.); (J.K.); (J.L.); (S.L.)
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Byun H, Chang J, Choi M, Chun J, Jung J, Jeong C, Kim J, Chang Y, Lee S, Kim Y. PO-1145 Evaluation of deep learning-based auto-segmentation of OARs for breast cancer radiotherapy. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07596-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Guerra F, Linz D, Garcia R, Kommata B, Kosiuk J, Chun J, Boveda S, Duncker D. The use of instant messaging in clinical data sharing: the EHRA SMS survey. Europace 2021. [DOI: 10.1093/europace/euab116.515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Nowadays, instant messaging (IM) provides fast and widespread communication. These platforms and apps enable the physicians to quickly share and send clinical data to their peers, to send information to their patients regarding their illnesses and to be reached for counselling and advise. Nevertheless, the use of IM has never been assessed in the cardiology community up until now.
Purpose
To assess the habits of cardiologists related to modern communication tools, their primary and secondary uses in clinical practice and the potential differences and preferences between different media in terms of ease of access, usefulness and trustworthiness.
Methods
An online survey was promoted by the EHRA e-Communication Committee and the EHRA Scientific Initiative Committee during the ESC Digital Health Week. All cardiologists were invited to participate via Twitter, LinkedIn, Facebook and other dedicated channels. The survey consisted of 22 questions and was made anonymous. The questions were made on an individual-basis and collected on SurveyMonkey.
Results
287 physicians from 33 countries responded to the survey. The mean age of the respondents was 43.4 ± 11.5 years, and 74.8% of them were male. 88.3% of all respondents routinely sends and 90.3% receives clinical data through IM. IM is used at least once a week (36.4%) or even once or more a day (40.4%) for sharing clinical data. WhatsApp is the most used IM app to share clinical data (79.4%). On a scale of 1 to 5, IM was second only to face-to-face contact (average 4.46) as the preferred method for sharing clinical data (average 3.69) and was considered better than phone calls (average 3.34) and e-mails (average 3.21). Twelve-lead ECGs (88.6%), medical history (61.4%) and echo loops (55.7%) are the data shared most often. Among potential pros of IM, the respondents listed being a fast way of communication (82.0%) and making it easy to contact colleagues (76.7%), while privacy issues regarding IM apps providers (62.7%) and other colleagues (45.6%) were commonly perceived as drawbacks. Only 57.4% of all respondents anonymize clinical data before sharing them through IM, and only 44.0% of the data received are reported to be anonymized. Of note, 29.3% of the respondents were not aware of the European General Data Protection Regulation (GDPR) on data protection at the time of the survey, and 29.8% do not know if their institution has a specific policy regarding the use of IM for professional use.
Conclusions
IM apps are used by cardiologists worldwide to share and discuss clinical data and are preferred to many other methods of data sharing, being second only to face-to-face contact. IM are often used and to share many different types of clinical data, being perceived as a fast and easy way of communication. Cardiologists should be sensitised to appropriate use of IM in accordance to GDPR and local policies in order to prevent legal and privacy issues.
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Affiliation(s)
- F Guerra
- Marche Polytechnic University of Ancona, Cardiology and Arrhythmology Clinic, Ancona, Italy
| | - D Linz
- Maastricht University Medical Centre (MUMC), Department of Cardiology, Maastricht, Netherlands (The)
| | - R Garcia
- University Hospital of Poitiers, Cardiology Department, Poitiers, France
| | - B Kommata
- Uppsala University, Departments of Cardiology and Medical Science, Uppsala, Sweden
| | - J Kosiuk
- University of Leipzig, Rhythmology Department, Leipzig, Germany
| | - J Chun
- CardioVascular Center Bethanien (CCB), Frankfurt, Germany
| | - S Boveda
- Clinic Pasteur, Heart Rhythm Management Department, Toulouse, France
| | - D Duncker
- Hannover Heart Center, Department of Cardiology and Angiology, Hannover, Germany
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SIMMS E, Chung H, Oberding L, Muruve D, McDonald B, Bromley A, Pillai D, Chun J. POS-210 POST-MORTEM MOLECULAR INVESTIGATIONS OF SARS-COV-2 IN AN UNEXPECTED DEATH OF A RECENT KIDNEY TRANSPLANT RECIPIENT. Kidney Int Rep 2021. [PMCID: PMC8049651 DOI: 10.1016/j.ekir.2021.03.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
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RAHMANI W, Sinha S, Chung H, Arora R, Jaffer A, Biernaskie J, Chun J. POS-389 PODOCYTE MATURATION IN HUMAN KIDNEY ORGANOIDS IS ACCELERATED WITH RENIN-ANGIOTENSIN SYSTEM ACTIVATION. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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ELLIOTT M, Colvin James L, Simms E, Sharma P, Elliott M, Lauzon J, Chun J. POS-423 MAINSTREAMING GENETIC TESTING FOR ADULT NEPHROLOGY: A MODEL FOR A PUBLICLY FUNDED HEALTHCARE SYSTEM FOR AUTOSOMAL DOMINANT POLYCYSTIC KIDNEY DISEASE AND FOCAL SEGMENTAL GLOMERULOSCLEROSIS. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Chun J, Lee HK, Lee J, Lee S. Effectiveness of web-based intervention for reducing problematic alcohol use in Korean female college students. Journal of Substance Use 2021. [DOI: 10.1080/14659891.2021.1884297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Seoul, South Korea
| | - Hae Kook Lee
- Department of Psychiatry, The Catholic University of Korea, College of Medicine, South Korea
| | - Jieun Lee
- Department of Social Welfare, Ewha Womans University, Seoul, South Korea
| | - Serim Lee
- Department of Social Welfare, Ewha Womans University, Seoul, South Korea
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Weston JS, Chun J, Schenter G, Weigandt K, Zong M, Zhang X, Rosso KM, Anovitz LM. Connecting particle interactions to agglomerate morphology and rheology of boehmite nanocrystal suspensions. J Colloid Interface Sci 2020; 572:328-339. [PMID: 32259727 PMCID: PMC10552555 DOI: 10.1016/j.jcis.2020.03.109] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 03/27/2020] [Accepted: 03/28/2020] [Indexed: 10/24/2022]
Abstract
HYPOTHESIS The rheology of complex suspensions, such as nuclear waste slurries at the Hanford and Savannah River sites, imposes significant challenges on industrial-scale processing. Investigating the rheology and connecting it to the agglomerate morphology and underlying particle interactions in slurries will provide important fundamental knowledge, as well as prescriptive data for practical applications. Here, we use suspensions of nano-scale aluminum oxyhydroxide minerals in the form of boehmite as an analog of the radioactive waste slurry to investigate the correlation between particle interactions, agglomerate morphology, and slurry rheology. EXPERIMENTS A combination of Couette rheometry and small-angle scattering techniques (independently and simultaneously) were used to understand how agglomerate structure of slurry changes under flow and how these structural changes manifest themselves in the bulk rheology of the suspensions. FINDINGS Our experiments show that the boehmite slurries are thixotropic, with the rheology and structure of the suspensions changing with increasing exposure to flow. In the slurries, particle agglomerates begin as loose, system-spanning clusters, but exposure to moderate shear rates causes the agglomerates to irreversibly consolidate into denser clusters of finite size. The structural changes directly influence the rheological properties of the slurries such as viscosity and viscoelasticity. Our study shows that solution pH affects the amount of structural rearrangement and the kinetics of the rearrangement process, with an increase in pH leading to faster and more dramatic changes in bulk rheology, which can be understood via correlations between particle interactions and the strength of particle network. Nearly identical structural changes were also observed in Poiseuille flow geometries, implying that the observed changes are relevant in pipe flow as well.
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Affiliation(s)
- J S Weston
- Russell School of Chemical Engineering, University of Tulsa, Tulsa, OK 74104, United States
| | - J Chun
- Pacific Northwest National Laboratory, Richland, WA 99354, United States; Benjamin Levich Institute, CUNY City College of New York, New York, NY 10031, United States
| | - G Schenter
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - K Weigandt
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States
| | - M Zong
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - X Zhang
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - K M Rosso
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - L M Anovitz
- Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States
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Yao J, Ossana A, Chun J, Yu XY. In situ liquid SEM imaging analysis revealing particle dispersity in aqueous solutions. J Microsc 2020; 279:79-84. [PMID: 32412130 DOI: 10.1111/jmi.12904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/22/2020] [Accepted: 05/11/2020] [Indexed: 11/28/2022]
Abstract
A quantitative description on dispersity of boehmite (γ-AlOOH) particles, a key component for waste slurry at Hanford sites, can provide useful knowledge for understanding various physicochemical nature of the waste. In situ liquid scanning electron microscopy (SEM) was used to evaluate the dispersity of particles in aqueous conditions using a microfluidic sample holder, System for Analysis at Liquid Vacuum Interface (SALVI). Secondary electron (SE) images and image analyses were performed to determine particle centroid locations and the distance to the nearest neighbour particle centroid, providing reliable rescaled interparticle distances as a function of ionic strength in acidic and basic conditions. Our finding of the particle dispersity is consistent with physical insights from corresponding particle interactions under physicochemical conditions, demonstrating delicate changes in dispersity of boehmite particles based on novel in situ liquid SEM imaging and analysis. LAY DESCRIPTION: In situ liquid scanning electron microscopy (SEM) was used to determine the interparticle distance of boehmite (γ-AlOOH) particles, a key component for waste slurry at Hanford sites. This type of quantitative measurement is important to understand various physicochemical nature of the radiological waste containing boehmite. In situ liquid SEM was enabled by a unique vacuum compatible microfluidic cell, System for Analysis at Liquid Vacuum Interface (SALVI). We collected secondary electron (SE) images and performed image analyses to determine particle centroid locations and the distance to the nearest neighbour particle centroid to arrive at the interparticle distances in acidic and basic conditions. Our results show that delicate changes occur among boehmite particles under different pH conditions using novel in situ SEM imaging.
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Affiliation(s)
- J Yao
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington, U.S.A
| | - A Ossana
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington, U.S.A
| | - J Chun
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington, U.S.A
| | - X-Y Yu
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington, U.S.A
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Kim HHS, Chun J. Bullying Victimization, School Environment, and Suicide Ideation and Plan: Focusing on Youth in Low- and Middle-Income Countries. J Adolesc Health 2020; 66:115-122. [PMID: 31515133 DOI: 10.1016/j.jadohealth.2019.07.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/24/2019] [Accepted: 07/01/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE This study examines the relationship between bullying victimization, measured at individual and school levels, and suicide intent and plan among youth living in less developed parts of the world. METHODS Multilevel modeling is used to estimate the degree to which school-level bullying has an independent effect on the two suicide measures and how it moderates the impact of individual-level victimization on contemplating and planning suicide. Data are drawn from the Global School-Based Student Health (2000-2012) survey that consists of probability samples of adolescents in low- and middle-income countries. RESULTS By fitting three-level mixed effects models, we find that adjusting for personal experience of victimization, greater school-level prevalence of bullying has a positive independent relationship with suicide plan, but not ideation. Significant cross-level interaction effects are shown, that is, the bullying-suicide linkage at the individual level is moderated by the school environment. For suicide ideation only, it is weaker in schools where more students are bullied. The association is also less pronounced in the context characterized by higher proportion of physical violence among students and peer hostility on campus. CONCLUSIONS The bulk of prior research narrowly defines the relationship between bullying and suicide at the individual (e.g., student) level. This study shows that school context (e.g., proportion of bullied peers) must be incorporated into the analysis in better understanding the conditions under which youth think about and/or plan on inflicting lethal self-harm.
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Affiliation(s)
| | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Seoul, Republic of Korea
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22
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Lin QQ, Zhao J, Zheng CG, Chun J. Roles of notch signaling pathway and endothelial-mesenchymal transition in vascular endothelial dysfunction and atherosclerosis. Eur Rev Med Pharmacol Sci 2019; 22:6485-6491. [PMID: 30338818 DOI: 10.26355/eurrev_201810_16062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the role of the Notch signaling pathway on the endothelial-mesenchymal transition (EndMT) during vascular endothelial dysfunction and atherosclerosis. MATERIALS AND METHODS Human coronary artery endothelial cells (HCAEC) were treated with the exogenous Notch homolog 1 (Notch1) factor to activate the Notch1 pathway, and cells were then observed under the microscope for morphologic changes. Changes in the expression of related proteins were detected by Western blot. In vivo experiments were performed using 18 Sprague Dawley® (SD) rats, and GSI factor was used to specifically inhibit Notch pathway activation. Rats were used and randomly divided into three groups: normal diet (ND) group, high-fat diet (HFD) group, and high-fat diet + GSI (HFD+GSI) group, 6 rats in each group. Hematoxylin and eosin (H&E) staining was used to examine the cardiac aortic morphology of the rats in each treatment group. Real-time polymerase chain reaction (RT-PCR) and Western blot were used to detect the expression of Notch1, Hes1, VE-cadherin and α-SMA in the aortic tissues of rats in each group at mRNA and protein levels, respectively. RESULTS After HCAECs were treated with Notch1, endothelial protein levels of VE-cadherin were significantly decreased and levels of the interstitial protein α-SMA were significantly increased. In the animal model, the rats fed with high-fat diet for two months presented obvious atherosclerosis spots in their aorta, but those fed with the same diet and treated with GSI inhibitor of Notch pathway showed significantly fewer atherosclerosis signs. Compared with ND group, mRNA and protein expression levels of Notch1, Hes1 and α-SMA were significantly increased, and the expression levels of endothelial marker VE-cadherin were significantly decreased in aortas of rats in HFD group. Compared with the rats in HFD group, the rats in HFD+GSI group showed significantly reduced expression levels of Notch1, Hes1 and α-SMA. CONCLUSIONS The activation of Notch signaling pathway can induce the EndMT progression and promote the development of atherosclerotic lesions.
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Affiliation(s)
- Q-Q Lin
- Department of Pathology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, PR China.
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Song E, Hwang J, Choi J, Gwon H, Chun J, Choi SG, Chang Y. MON-LB675: Dracocephlaum Moldavica L. Seed Extracts Ameliorate Photo-Aging Andwound Healing in HaCat Cell and 3D Skin Model. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32130-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Song E, Choi J, Gwon H, Choi SG, Chun J, Chang Y, Hwang J. MON-LB674: Dracocephalum Moldavica L. Seed Extracts Modulate Inflammation and Oxidative Stress in Human Skin Cells. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32129-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Song H, Kang E, Soh H, Chung H, Chun J, Yoon S, Ijaz U, Koh Y. MULTI-OMICS APPROACHES TO UNDERSTAND GASTRIC MUCOSA-ASSOCIATED LYMPHOID TISSUE (MALT) LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- H. Song
- Cancer Research Institute; Seoul National University College of Medicine; Seoul Republic of Korea
| | - E. Kang
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - H. Soh
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - H. Chung
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - J. Chun
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - S. Yoon
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
| | - U. Ijaz
- School of Engineering; University of Glasgow; Glasgow United Kingdom
| | - Y. Koh
- Department of Internal Medicine; Seoul National University Hospital; Seoul Republic of Korea
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Gooch JC, Chun J, Jubas T, Guth A, Schnabel F. Abstract P4-10-11: Pregnancy-associated breast cancer in a contemporary cohort of newly diagnosed women. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-10-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Pregnancy-associated breast cancer (PABC) refers to breast cancer (BC) diagnosed during pregnancy, lactation, or in the postpartum period. There is evidence that PABC is associated with a poorer prognosis, and that the development of the disease is influenced by the unique hormonal milieu of pregnancy. The purpose of this study was to investigate the clinicopathologic characteristics associated with PABC in a contemporary cohort of women with newly diagnosed BC.
Methods: Our institutional Breast Cancer Database was queried for women diagnosed with breast cancer between 2010-17 who had at least one full term pregnancy (FTP). Variables of interest included patient demographics and clinical and tumor characteristics. PABC was defined as breast cancer diagnosed within 24 months of delivery. Statistical analyses included Pearson's chi-square and logistic regression.
Results: Out of a total of 1934 women, 42 (2.2%) had PABC. Median follow up in the total cohort was 4.5 years. After adjusting for age at diagnosis, PABC was associated with older age at first FTP, ethnic minority status, BRCA mutation carriers, presentation with a palpable mass, higher histologic grade, and ER-negative and triple negative receptor status. Variables that were not significantly different between PABC and non-PABC cases included tumor histology, multifocality, presence of lymphovascular invasion, and family history of breast cancer.
Table:Selected Characteristics of Women with PABCVariableNon-PABC (n=1892)PABC (n=42)P-value*Age at first full term pregnancy <0.001<35 years1610 (85%)28 (66.7%) ≥35 years277 (15%)14 (33.3%) Race 0.001White1397 (73.8%)23 (54.8%) Black181 (9.6%)8 (19%) Asian175 (9.2%)10 (23.8%) Hispanic131 (6.9%)1 (2.4%) Other8 (0.4%)0 (0%) BRCA 1,2 Positive56 (3%)9 (21.4%)<0.001Method of Presentation 0.002Breast Exam579 (30.6%)30 (71.4%) Mammography1137 (60.1%)10 (23.8%) Ultrasound87 (1.6%)2 (4.8%) MRI67 (3.5%)0 (0%) Other22 (1.2%)0 (0%) Invasive Grade 0.014Low213 (15%)0 (0%) Intermediate763 (53.8%)12 (37.5%) High442 (31.2%)20 (62.5%) Estrogen Receptor 0.034Positive1572 (83.9%)29 (69%) Negative301 (16.1%)13 (31%) Triple Negative135 (7.1%)7 (16.7%)0.041*P-values are age-adjusted.
Conclusions: The association of PABC with ethnic minority status in our cohort is interesting and may be reflected in the increased proportion of triple negative breast cancers in the PABC group. In our contemporary cohort, PABC was associated with older age at first FTP. As more women delay childbearing, risk for PABC may increase. Our findings suggest that women who become pregnant at older ages should be followed carefully during pregnancy and in the postpartum period, especially if they are BRCA mutation carriers. The optimal approach for monitoring older women during pregnancy and the postpartum period is unclear. Clinical breast exam may play an important role, especially for those women known to be at increased risk for breast cancer.
Citation Format: Gooch JC, Chun J, Jubas T, Guth A, Schnabel F. Pregnancy-associated breast cancer in a contemporary cohort of newly diagnosed women [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-10-11.
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Affiliation(s)
- JC Gooch
- New York University Langone Medical Center, New York, NY; New York University, New York, NY
| | - J Chun
- New York University Langone Medical Center, New York, NY; New York University, New York, NY
| | - T Jubas
- New York University Langone Medical Center, New York, NY; New York University, New York, NY
| | - A Guth
- New York University Langone Medical Center, New York, NY; New York University, New York, NY
| | - F Schnabel
- New York University Langone Medical Center, New York, NY; New York University, New York, NY
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Gooch JC, Chun J, Jubas T, Guth A, Schnabel F. Abstract P4-10-07: Breastfeeding experience among breast cancer patients in the modern era. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-10-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: In recent years, the uptake of breastfeeding has become more common as it is regarded as healthy and beneficial for both mother and infant. The process of parturition and lactation plays a role in the normal differentiation and development of breast tissue, and multiparity has been associated with a decreased risk for breast cancer. The current study sought to describe the breastfeeding experience of a modern cohort of women with newly diagnosed BC, and to examine the clinicopathologic characteristics of their disease.
Methods: A retrospective review of our institutional Breast Cancer Database from 2009-2017 was performed to identify women with at least one full term pregnancy (FTP). Clinicopathologic and demographic information was recorded, including breastfeeding experience and cumulative duration of nursing. Women were grouped by self-reported breastfeeding experience and duration of breastfeeding for analysis. Pearson's chi-square tests were performed.
Results: Of 1919 patients, 1053 (54.9%) reporting breastfeeding. Breastfeeding increased from a low of 30.4% among women with first FTP (FFTP) in the 1950's to 84.6% with FFTP in the 2010's. There were no significant differences between those who did and did not breast feed with regards to race, family history, BRCA status, pathologic stage, grade, tumor histology, lymphovascular invasion (LVI), multifocality, tumor size or receptor status. When stratified by duration of breastfeeding, the most striking finding was that women who breastfed for >12 months were more likely to have tumors associated with LVI (p = 0.028).
Table– Breastfeeding Experience Among Parous Women with Breast CancerVariableNo Breastfeeding (n=866)Breastfeeding (n=1053)p-valueRace 0.432White648 (74.8%)767 (72.8%) Black73 (8.5%)112 (10.6%) Asian78 (9%)102 (9.7%) Hispanic64 (7.4%)67 (6.4%) Other3 (0.3%)5 (0.5%) Family history272 (31.4%)311 (29.6%)0.397BRCA 1,2 positive23 (2.7%)42 (4.0%)0.108Final Pathology Stage 0.2240190 (21.9%)222 (21.1%) I426 (49.2%)507 (48.1%) II197 (22.8%)229 (21.7%) III40 (4.6%)63 (6.0%) IV1 (0.1%)3 (0.3%) No residual (neoadjuvant)12 (1.4%)29 (34.1%) Invasive Grade 0.127Low92 (14.1%)120 (15.3%) Intermediate371 (56.7%)398 (50.6%) High191 (29.2%)268 (34.1%) Histology 0.130DCIS189 (21.8%)223 (21.2%) IDC531 (61.3%)688 (65.3%) ILC113 (13.1%)99 (9.4%) Other33 (3.8%)43 (4.1%) LVI127 (14.7%)174 (16.5%) Multifocality147 (17%)183 (17.4%) Median tumor size (cm; range)1.4 (0-9.5)1.3 (0-12.5)0.489Estrogen Receptor 0.206Positive726 (84.7%)861 (82.6%) Negative131 (15.3%)182 (17.4%) Progesterone Receptor 0.275Positive621 (72.5%)732 (70.2%) Negative236 (27.5%)311 (29.8%) HER2/neu Receptor 0.068Positive78 (12%)121 (15.4%) Negative571 (88%)667 (84.6%)
Conclusions: Breastfeeding experience was not generally associated with significant differences in tumor or patient characteristics. However, breastfeeding for longer than 12 months was associated with LVI. It is possible that changes in the breast tissue that occur during the process of pregnancy and prolonged lactation may influence future tumor development. These findings are hypothesis generating and suggest that the relationship of prolonged breastfeeding and breast cancer development should be investigated further.
Citation Format: Gooch JC, Chun J, Jubas T, Guth A, Schnabel F. Breastfeeding experience among breast cancer patients in the modern era [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-10-07.
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Affiliation(s)
- JC Gooch
- New York University Medical Center, New York, NY; New York University, New York, NY
| | - J Chun
- New York University Medical Center, New York, NY; New York University, New York, NY
| | - T Jubas
- New York University Medical Center, New York, NY; New York University, New York, NY
| | - A Guth
- New York University Medical Center, New York, NY; New York University, New York, NY
| | - F Schnabel
- New York University Medical Center, New York, NY; New York University, New York, NY
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Chun J, Schnabel F, Gooch J, Lee J, Jubas T, Goodgal J, Guth A, Moy L. Abstract P5-02-01: The relationship of breast density in mammography and magnetic resonance imaging (MRI) in women with triple negative breast cancer (TNBC). Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p5-02-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction:
TNBC represent 10%–20% of invasive breast cancers. Previous studies showed that TNBC usually present with benign features on mammography, ultrasound and MRI. However, there is a dearth of information on the relationship of mammographic breast density (MBD), background parenchymal enhancement (BPE) and fibroglandular tissue (FGT) on MRI with TNBC. The purpose of this study was to evaluate the relationship between BD, BPE, and FGT in women with TNBC compared to non-TNBC in a contemporary cohort of women with breast cancer.
Methods:
The Institutional Breast Cancer Database was queried for women who had invasive breast cancer and underwent mammography and MRI between (2010-2017). Variables of interest included clinical, pathologic, and imaging characteristics. Statistical analyses included Pearson's Chi Square and logistic regression.
Results:
Of 2224 women, 210 (9%) had TNBC. The median age was 59 years (22-95) and median follow up was 4 years. When we looked at the clinical characteristics of women with TNBC compared to non-TNBC, race, BRCA1,2 status, method of presentation, palpability, histology, grade, and Ki67 were statistically different (Table 1). When we looked at the correlation of MBD, FGT, and BPE for women with TNBC, MBD was correlated with FGT (r=0.64) but weakly correlated with BPE (r=0.22). We found a significant association of low BPE and TNBC compared to the non-TNBCs (p=0.021) (Table 1). In a short period of time, only 8 women with TNBC had a recurrence with no significant association with MBD, BPE, or FGT (Table 1).
Table 1.Imaging Characteristics among TNBC compared to non-TNBCVariableTNBC (N=210)%Non-TNBC (N=2014)%P-valueRace 0.001White13665153376 Black35171749 Hispanic1261156 Asian23111739 Other42191 BRCA1/2 <0.001Positive3025425 Negative897579195 Method of Presentation <0.001Breast exam1125475738 Mammography7737105753 Ultrasound731106 MRI126553 Palpable <0.001Yes1185783342 No9144115258 Histology <0.001DCIS with Microinvasion21382 IDC19693159079 ILC5226913 Invasive Other731176 Invasive Grade <0.001Grade 11131016 Grade 22714111858 Grade 31688650126 ER <0.001Positive00189194 Negative2101001226 PR <0.001Positive00160080 Negative21010041221 Ki67 <0.001Median (range)60 (0-99) 10 (0-99) Mammographic Density 0.165Less dense82417846 More dense11959103454 MRI BPE 0.021Low BPE707655564 High BPE222431236 MRI FGT 0.370Less dense475440449 More dense404642151
Conclusions:
In our study population, MBD and FGT did not differ between patients with TNBC compared to non-TNBC. Interestingly, we found a higher proportion of women with lower BPE in the TNBC compared to the non-TNBC group. BPE refers to the amount of enhancing fibroglandular tissue and has been demonstrated to reflect variations in estrogen-mediated vascular permeability. Lower BPE in TNBC may reflect the fact that these tumors are not hormonally sensitive. This may also have implications for radiogenomics, which aims to correlate imaging characteristics with gene expression and genome-related characteristics in tumor biology. Further studies are warranted in looking at these imaging biomarkers and TNBC.
Citation Format: Chun J, Schnabel F, Gooch J, Lee J, Jubas T, Goodgal J, Guth A, Moy L. The relationship of breast density in mammography and magnetic resonance imaging (MRI) in women with triple negative breast cancer (TNBC) [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-02-01.
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Affiliation(s)
- J Chun
- NYU Langone Health, New York, NY
| | | | - J Gooch
- NYU Langone Health, New York, NY
| | - J Lee
- NYU Langone Health, New York, NY
| | - T Jubas
- NYU Langone Health, New York, NY
| | | | - A Guth
- NYU Langone Health, New York, NY
| | - L Moy
- NYU Langone Health, New York, NY
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Anovitz LM, Zhang X, Soltis J, Nakouzi E, Krzysko AJ, Chun J, Schenter GK, Graham TR, Rosso KM, De Yoreo JJ, Stack AG, Bleuel M, Gagnon C, Mildner DFR, Ilavsky J, Kuzmenko I. Effects of Ionic Strength, Salt, and pH on Aggregation of Boehmite Nanocrystals: Tumbler Small-Angle Neutron and X-ray Scattering and Imaging Analysis. Langmuir 2018; 34:15839-15853. [PMID: 30350702 PMCID: PMC11024987 DOI: 10.1021/acs.langmuir.8b00865] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The US government currently spends significant resources managing the legacies of the Cold War, including 300 million liters of highly radioactive wastes stored in hundreds of tanks at the Hanford (WA) and Savannah River (SC) sites. The materials in these tanks consist of highly radioactive slurries and sludges at very high pH and salt concentrations. The solid particles primarily consist of aluminum hydroxides and oxyhydroxides (gibbsite and boehmite), although many other materials are present. These form complex aggregates that dramatically affect the rheology of the solutions and, therefore, efforts to recover and treat these wastes. In this paper, we have used a combination of transmission and cryo-transmission electron microscopy, dynamic light scattering, and X-ray and neutron small and ultrasmall-angle scattering to study the aggregation of synthetic nanoboehmite particles at pH 9 (approximately the point of zero charge) and 12, and sodium nitrate and calcium nitrate concentrations up to 1 m. Although the initial particles form individual rhombohedral platelets, once placed in solution they quickly form well-bonded stacks, primary aggregates, up to ∼1500 Å long. These are more prevalent at pH = 12. Addition of calcium nitrate or sodium nitrate has a similar effect as lowering pH, but approximately 100 times less calcium than sodium is needed to observe this effect. These aggregates have fractal dimension between 2.5 and 2.6 that are relatively unaffected by salt concentration for calcium nitrate at high pH. Larger aggregates (>∼4000 Å) are also formed, but their size distributions are discrete rather than continuous. The fractal dimensions of these aggregates are strongly pH-dependent, but only become dependent on solute at high concentrations.
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Affiliation(s)
- L. M. Anovitz
- Chemical Sciences Division, Oak Ridge National Laboratory, MS 6110, Oak Ridge, Tennessee 37831-6110, United States
| | - X. Zhang
- Physical Sciences Division. Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - J. Soltis
- Physical Sciences Division. Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - E. Nakouzi
- Physical Sciences Division. Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - A. J. Krzysko
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - J. Chun
- Physical Sciences Division. Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - G. K. Schenter
- Physical Sciences Division. Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - T. R. Graham
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - K. M. Rosso
- Physical Sciences Division. Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - J. J. De Yoreo
- Physical Sciences Division. Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - A. G. Stack
- Chemical Sciences Division, Oak Ridge National Laboratory, MS 6110, Oak Ridge, Tennessee 37831-6110, United States
| | - M. Bleuel
- Center for Neutron Research, National Institute of Standards and Technology, Stop 6102, Gaithersburg, Maryland 20889-6102, United States
- Department of Materials Science and Eng. J. Clark School of Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - C. Gagnon
- Center for Neutron Research, National Institute of Standards and Technology, Stop 6102, Gaithersburg, Maryland 20889-6102, United States
- Department of Materials Science and Eng. J. Clark School of Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - D. F. R. Mildner
- Center for Neutron Research, National Institute of Standards and Technology, Stop 6102, Gaithersburg, Maryland 20889-6102, United States
| | - J. Ilavsky
- Argonne National Laboratory, 9700 S. Cass Avenue, Bldg. 433A, Argonne, Illinois 60439, United States
| | - I. Kuzmenko
- Argonne National Laboratory, 9700 S. Cass Avenue, Bldg. 433A, Argonne, Illinois 60439, United States
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Abstract
BACKGROUND With the dishonor of being the highest suicide rated country in Organisation for Economic Co-operation and Development, South Korea should take more initiatives in suicide prevention. Although the role of the media and its relation to actual suicide attempts has been tested and supported by many studies, the suicide reporting guidelines are not well followed. The purpose of this study is to examine how well Korean newspapers adhere to existing guidelines and to suggest limitation and improvements for the current guidelines. METHODS Five mainstream newspapers in South Korea, namely, Kyunghyang Shinmun, Hankyoreh, Chosun Ilbo, JoongAng Daily, and Dong-A Ilbo, were chosen for the analysis. Using the Naver news search engine, articles dated from January 1, 2014, to December 31, 2017, were selected with the keyword "suicide" and advanced option "printed newspaper." However, articles, columns, opinions, and reviews that utilized the word "suicide" in a general context were excluded from the final analysis. Finally, the number of cases was narrowed down to 368. Each article was analyzed using the guideline framework consisting of 13 items: sensational coverage, overstatement, direct wording, method used, details about site/location, photographs, suicide note, generalization, speculation, romanticization, interviews with the bereaved, help-seeking information, and public education. RESULTS More than 60% of the articles included direct wording (63.9%), mentioned the method used (68.2%), and provided details about the site or location (74.5%). Nearly half of the articles revealed the contents of the suicide note (44.6%). Less than 3% of the suicide reports had information about hotline logo or phone numbers (1.4%) and facts regarding suicide and suicide prevention (2.2%). CONCLUSIONS Our study revealed that the guidelines were ineffective in their monitoring role and that most of the newspapers were incompliant with many significant guideline items in South Korea. Our findings not only explore the limitations of the current guidelines but also provide an important rationale as to why there should be stronger suicide monitoring regulation or an agency with sufficient authority to prevent suicide in a nation-wide scale.
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Affiliation(s)
- JongSerl Chun
- Department of Social Welfare, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
| | - Jinyung Kim
- Department of Social Welfare, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Serim Lee
- Department of Social Welfare, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
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Kim HHS, Chun J. Analyzing Multilevel Factors Underlying Adolescent Smoking Behaviors: The Roles of Friendship Network, Family Relations, and School Environment. J Sch Health 2018; 88:434-443. [PMID: 29749004 DOI: 10.1111/josh.12630] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 07/09/2017] [Accepted: 02/26/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND This study investigates the extent to which friendship network, family relations, and school context are related to adolescent cigarette smoking. Friendship network is measured in terms of delinquent peers; family relations in terms of parental supervision; and school environment in terms of objective (eg, antismoking policy) and subjective (eg, school attachment) characteristics. METHODS Findings are based on the secondary analysis of the health behavior in school-aged children, 2009-2010. Two-level hierarchical generalized linear models are estimated using hierarchical linear modeling 7. RESULTS At the student level, ties to delinquent friends is significantly related to higher odds of smoking, while greater parental supervision is associated with lower odds. At the school level, antismoking policy and curriculum independently lower smoking behavior. Better within-class peer relations, greater school attachment, and higher academic performance are also negatively related to smoking. Last, the positive association between delinquent friends and smoking is weaker in schools with a formally enacted antismoking policy. However, this association is stronger in schools with better peer relations. CONCLUSIONS Adolescent smoking behavior is embedded in a broader ecological setting. This research reveals that a proper understanding of it requires comprehensive analysis that incorporates factors measured at individual (student) and contextual (school) levels.
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Affiliation(s)
- Harris H-S Kim
- Department of Sociology, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Republic of Korea
| | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Republic of Korea
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Bogar L, Cantwell L, Fregoso M, Chun J, Singh R. Negative Pressure Wound Therapy Applied to Groin Cannulation Incisions Decrease the Incidence and Severity of Seroma Formation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Dubrovsky E, Raymond S, Chun J, Schnabel F. Abstract P5-23-03: Gene expression profiling in male breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p5-23-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:
Tumor gene expression profiling tests are widely used to quantify risk of recurrence of breast cancer and guide systemic therapy in early stage breast cancer. These assays have not been well validated in a male cohort. The purpose of this study was to determine the current rates of genomic testing in male breast cancer (MBC), the distribution of risk of recurrence scores (RRS) in early stage MBC, and the effect of RRS on systemic treatment patterns.
Methods:
The National Cancer Database was queried and found to include 6,227 cases of pathologic T1/T2 and N0/N1 MBC from 2008-2014 with known genomic testing status. Of the 1478 (23.74%) male patients who had gene expression profiling performed, variables of interest included age at diagnosis, stage, estrogen receptor status (ER), RRS, and treatment. We compared the treatment patterns of the 1,343 patients who had RRS available and the 4,527 patients who were not tested. A similar analysis was performed in female breast cancer (FBC) patients to serve as a point of reference. Statistical analysis included multivariate logistic regression and Pearson's chi-square test.
Results:
Of the 1,478 (23.74%) cases of MBC who had gene expression profiling, the most significant variables included: younger age, non-Black race, diagnosis after 2010, tumor Grade II, Estrogen Receptor (ER) positivity, and N0 or N1mi disease. Of those who had results, the distribution of RRS was 59.3% low, 27.4% intermediate, and 13.3% high. A similar distribution was found in 154,705 women who were tested during the same study period. Risk scores in men were significantly associated with tumor grade and size, but not nodal status. 83.4% of men with a low RRS were treated with hormone therapy alone, with an adjusted odds ratio (AOR) of 7.18 (CI 5.78-8.91, p<0.001). Also, 61.8% of men with a high RRS received combination chemotherapy and hormone therapy, with an AOR of 5.16 (CI 3.60-740, p<0.001).
Conclusion:
Although there is limited literature supporting the use of genomic assays in MBC, our study found similar rates of testing in men and women with early stage breast cancer. Treatment patterns varied significantly based on risk stratification, implying that physicians are using gene profiling assays to help guide treatment in MBC. Understanding the role for genomic profiling in MBC is particularly important as these results will be incorporated into the new AJCC 8th edition staging system. Long term follow up is needed to determine whether these tests accurately predict prognosis and recurrence in a male cohort.
Citation Format: Dubrovsky E, Raymond S, Chun J, Schnabel F. Gene expression profiling in male breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P5-23-03.
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Affiliation(s)
| | - S Raymond
- NYU Langone Medial Center, New York, NY
| | - J Chun
- NYU Langone Medial Center, New York, NY
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Wu S, Tam M, Schnabel F, Chun J, Vega RM, Guth A, Adams S, Gerber N. Postmastectomy Radiation Therapy in Breast Cancer Patients With Nodal Micrometastases. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wu S, Tam M, Schnabel F, Chun J, Perez C, Schreiber D, Gerber N. The Impact of Adjuvant Radiation Timing on Survival After Breast Conserving Surgery in Early Stage Breast Cancer Patients. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Chun J, Lee HK. Developing a service evaluation index for Internet addiction through the Delphi method. International Journal of Mental Health Promotion 2017. [DOI: 10.1080/14623730.2017.1345686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Seoul, South Korea
| | - Hae Kook Lee
- Department of Psychiatry, The Catholic University of Korea, Uijongbu, South Korea
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Schmitz K, Brunkhorst R, de Bruin N, Mayer CA, Häussler A, Ferreiros N, Schiffmann S, Parnham MJ, Tunaru S, Chun J, Offermanns S, Foerch C, Scholich K, Vogt J, Wicker S, Lötsch J, Geisslinger G, Tegeder I. Dysregulation of lysophosphatidic acids in multiple sclerosis and autoimmune encephalomyelitis. Acta Neuropathol Commun 2017; 5:42. [PMID: 28578681 PMCID: PMC5457661 DOI: 10.1186/s40478-017-0446-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 05/21/2017] [Indexed: 01/18/2023] Open
Abstract
Abstract Bioactive lipids contribute to the pathophysiology of multiple sclerosis. Here, we show that lysophosphatidic acids (LPAs) are dysregulated in multiple sclerosis (MS) and are functionally relevant in this disease. LPAs and autotaxin, the major enzyme producing extracellular LPAs, were analyzed in serum and cerebrospinal fluid in a cross-sectional population of MS patients and were compared with respective data from mice in the experimental autoimmune encephalomyelitis (EAE) model, spontaneous EAE in TCR1640 mice, and EAE in Lpar2-/- mice. Serum LPAs were reduced in MS and EAE whereas spinal cord LPAs in TCR1640 mice increased during the ‘symptom-free’ intervals, i.e. on resolution of inflammation during recovery hence possibly pointing to positive effects of brain LPAs during remyelination as suggested in previous studies. Peripheral LPAs mildly re-raised during relapses but further dropped in refractory relapses. The peripheral loss led to a redistribution of immune cells from the spleen to the spinal cord, suggesting defects of lymphocyte homing. In support, LPAR2 positive T-cells were reduced in EAE and the disease was intensified in Lpar2 deficient mice. Further, treatment with an LPAR2 agonist reduced clinical signs of relapsing-remitting EAE suggesting that the LPAR2 agonist partially compensated the endogenous loss of LPAs and implicating LPA signaling as a novel treatment approach. Graphical abstract Graphical summary of lysophosphatidic signaling in multiple sclerosis![]() Electronic supplementary material The online version of this article (doi:10.1186/s40478-017-0446-4) contains supplementary material, which is available to authorized users.
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Nagase T, Bordignon S, Perrotta L, Bologna F, Weise F, Konstantinou A, Schmidt B, Chun J. P1397Pulmonary vein stenosis after pulmonary vein isolation -- lessons from invasive repeat studies comparing irrigated radiofrequency current, big cryoballoon, and visually guided laser balloon ablation. Europace 2017. [DOI: 10.1093/ehjci/eux158.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Chun J, Shim H, Kim S. A Meta-Analysis of Treatment Interventions for Internet Addiction Among Korean Adolescents. Cyberpsychol Behav Soc Netw 2017; 20:225-231. [PMID: 28263660 DOI: 10.1089/cyber.2016.0188] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This study comprehensively examined the effects of treatment interventions for Internet addiction among adolescents in South Korea through a meta-analysis. We analyzed 70 domestic master's theses and journal articles that reported on controlled studies and involved pre- and post-test analyses in the design. The dates of these publications fall between 2000 and 2015. The total effect size, calculated by random-effect analysis (g), revealed that interventions for the treatment of Internet addiction were effective (ES = 1.838). Meta-ANOVAs revealed differences between groups based on a theoretical model, intervention group size, and intervention duration. Integrative therapy produced larger effect sizes (ES = 2.794) compared to other treatment models such as cognitive behavioral therapy and reality therapy. Effect sizes for interventions, including nine to 12 people (ES = 2.178), were larger than those of interventions including more or fewer participants. Finally, treatment interventions that lasted 8 or more weeks revealed larger effect sizes (ES = 2.294) compared to shorter interventions. The study findings suggest directions for the development and effective operation of future Internet addiction interventions among Korean adolescents. Increasing the effectiveness of these interventions requires an integrative theoretical model, an intervention group size of nine to 12 participants, and a long-term intervention.
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Affiliation(s)
- JongSerl Chun
- Department of Social Welfare, Ewha Womans University , Seoul, South Korea
| | - HaiSun Shim
- Department of Social Welfare, Ewha Womans University , Seoul, South Korea
| | - Soyoun Kim
- Department of Social Welfare, Ewha Womans University , Seoul, South Korea
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Kang H, Chung IJ, Chun J, Nho CR, Woo S. Linking Traumatic Childhood Experiences to the Physical Health of Korean Adolescents in Out-of-Home Care through Depression and Anxiety. Soc Work Public Health 2017; 32:122-130. [PMID: 27719380 DOI: 10.1080/19371918.2016.1230082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The main purpose of this study is to assess whether the physical health of Korean adolescents in out-of-home care is affected directly by traumatic childhood experiences and/or indirectly through depression and anxiety. Study participants are 460 adolescents who are included in the first and second wave of the Panel Study on Korean Children in Out-of-Home Care. The data are analyzed using structural equation modeling. Our structural model finds no direct effects of traumatic experiences on physical health. Among the two types of trauma experiences, namely, family instability and violence experiences, only violence experiences affect physical health indirectly through depression and anxiety. Based on the results, practice implications for Korean adolescents in care are discussed.
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Affiliation(s)
- Hyunah Kang
- a Division of Child Welfare , Sookmyung Women's University , Seoul , Republic of Korea
| | - Ick-Joong Chung
- b Department of Social Welfare , Ewha Womans University , Seoul , Republic of Korea
| | - JongSerl Chun
- b Department of Social Welfare , Ewha Womans University , Seoul , Republic of Korea
| | - Choong Rai Nho
- b Department of Social Welfare , Ewha Womans University , Seoul , Republic of Korea
| | - Seokjin Woo
- c Department of Economics , Myongji University , Seoul , Republic of Korea
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Jeon HS, Chun J. The Influence of Stress on Juvenile Delinquency: Focusing on the Buffering Effects of Protective Factors among Korean Adolescents. Soc Work Public Health 2017; 32:223-237. [PMID: 28276895 DOI: 10.1080/19371918.2016.1274704] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The present study sought to examine self-control, parental support, and peer support as internal and external protective factors that buffer the influence of adolescent stress on delinquency among Korean adolescents. To this end, the paper utilized the 1st-year data from the Korea Youth Panel Study (KYPS) conducted by the National Youth Policy Institute; the study surveyed a total of 3,449 2nd-year middle school students. The results of the hierarchical regression analysis indicated that despite high levels of stress, high self-control mitigated the negative influence of stress on delinquency in adolescents. In contrast, parental and peer support were only found to be directly influential on juvenile delinquency. Parental support had only negative influences on status delinquency, and peer support had positive influences on both status and serious delinquency. Based on these results, we propose implications for preventing and intervening with juvenile delinquency.
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Affiliation(s)
- Hye Sook Jeon
- a Department of Social Welfare , Ewha Womans University , Seoul , Republic of Korea
| | - JongSerl Chun
- a Department of Social Welfare , Ewha Womans University , Seoul , Republic of Korea
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Schnabel F, Schwartz S, Hochman T, Chun J, Goldberg J. Abstract P5-16-26: National trends in neoadjuvant therapy for breast cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p5-16-26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose:Neoadjuvant therapy has been widely integrated in the treatment of locally advanced breast cancer. Over time, this strategy has been extended to include patients with earlier stage disease to allow for assessment of in vivo response to treatment. The aim of this study was to describe the national trends in neoadjuvant therapy for all invasive breast cancers with a particular focus on triple negative disease and HER2 status.
Methods: The National Cancer Database (NCDB), an oncology outcomes database that collects data from more than 1500 Commission on Cancer (CoC) accredited cancer programs, was queried for all women diagnosed with invasive breast cancer from 2006-2013. Patients with unknown systemic therapy sequence were excluded. Women were classified by whether or not they received neoadjuvant systemic, chemo and/or endocrine, therapy.
Results: We identified 1,221,976 cases that were eligible for this analysis. Of these, 29.7% were HER2 negative, 18.4% were classified as triple negative, and 8.9% received neoadjuvant systemic therapy. The percentage of patients receiving neoadjuvant therapy increased from 7.5% in 2006 to 9.8% in 2012 with a slight decrease to 9.5% in 2013. This increase in the use of neoadjuvant therapy over the time period was statistically significant (p<0.0001). There was a small increase in the percent of patients with HER2 positive status who received neoadjuvant therapy, from 5.7% in 2006 to 6.5% in 2013. During this time period, there was a 9% increase in the percent of triple negative patients who received neoadjuvant therapy (13.1% in 2016 to 22.1% in 2013).
Number and percent of patients who received/did not receive neoadjuvant therapy by year2006 (N=136117)2007 (N=143033)2008 (N=148888)2009 (N=154713)2010 (N=154040)2011 (N=162333)2012 (N=163395)2013 (N=159457)No Neoadjuvant Therapy | 125908 (92.5)131559 (91.98)136593 (91.74)141364 (91.37)139459 (90.53)146500 (90.25)147401 (90.21)144306 (90.5)Neoadjuvant Therapy | 10209 (7.5)11474 (8.02)12295 (8.26)13349 (8.63)14581 (9.47)15833 (9.75)15994 (9.79)15151 (9.5)
Conclusions: Over the time period from 2006-2013, there has been an apparent increase in the percentage of patients who received neoadjuvant therapy. This trend is accompanied by increases in the percentage of TNBC patients and in Her2 positive patients who received neoadjuvant therapy. Other factors and the joint effects of these factors on the observed increase in the use of neoadjuvant therapy are under evaluation to elucidate the basis for this observation in the NCDB data.
Citation Format: Schnabel F, Schwartz S, Hochman T, Chun J, Goldberg J. National trends in neoadjuvant therapy for breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P5-16-26.
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Affiliation(s)
- F Schnabel
- New York University Langone Medical Center, New York, NY
| | - S Schwartz
- New York University Langone Medical Center, New York, NY
| | - T Hochman
- New York University Langone Medical Center, New York, NY
| | - J Chun
- New York University Langone Medical Center, New York, NY
| | - J Goldberg
- New York University Langone Medical Center, New York, NY
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Chung H, Vilaysane A, Lau A, Stahl M, Morampudi V, Bondzi-Simpson A, Platnich JM, Bracey NA, French MC, Beck PL, Chun J, Vallance BA, Muruve DA. NLRP3 regulates a non-canonical platform for caspase-8 activation during epithelial cell apoptosis. Cell Death Differ 2016; 23:1331-46. [PMID: 26891693 DOI: 10.1038/cdd.2016.14] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 12/30/2015] [Accepted: 01/20/2016] [Indexed: 12/31/2022] Open
Abstract
Nod-like receptor, pyrin containing 3 (NLRP3) is characterized primarily as a canonical caspase-1 activating inflammasome in macrophages. NLRP3 is also expressed in the epithelium of the kidney and gut; however, its function remains largely undefined. Primary mouse tubular epithelial cells (TEC) lacking Nlrp3 displayed reduced apoptosis downstream of the tumor necrosis factor (TNF) receptor and CD95. TECs were identified as type II apoptotic cells that activated caspase-8, tBid and mitochondrial apoptosis via caspase-9, responses that were reduced in Nlrp3-/- cells. The activation of caspase-8 during extrinsic apoptosis induced by TNFα/cycloheximide (TNFα/CHX) was dependent on adaptor protein apoptosis-associated speck-like protein containing a CARD (ASC) and completely independent of caspase-1 or caspase-11. TECs and primary human proximal tubular epithelial cells (HPTC) did not activate a canonical inflammasome, caspase-1, or IL-1β secretion in response to TNFα/CHX or NLRP3-dependent triggers, such as ATP or nigericin. In cell fractionation studies and by confocal microscopy, NLRP3 colocalized with ASC and caspase-8 in speck-like complexes at the mitochondria during apoptosis. The formation of NLRP3/ASC/caspase-8 specks in response to TNFα/CHX was downstream of TNFR signaling and dependent on potassium efflux. Epithelial ASC specks were present in enteroids undergoing apoptosis and in the injured tubules of wild-type but not Nlrp3-/- or ASC-/- mice following ureteric unilateral obstruction in vivo. These data show that NLRP3 and ASC form a conserved non-canonical platform for caspase-8 activation, independent of the inflammasome that regulates apoptosis within epithelial cells.
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Affiliation(s)
- H Chung
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - A Vilaysane
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - A Lau
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - M Stahl
- Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - V Morampudi
- Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - A Bondzi-Simpson
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - J M Platnich
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - N A Bracey
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - M-C French
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - P L Beck
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - J Chun
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
| | - B A Vallance
- Department of Pediatrics, Child and Family Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - D A Muruve
- Department of Medicine, Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB, Canada
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Wood M, Schnabel F, Chun J, Schwartz S, Rounds T, Cuke M. Abstract P6-09-13: Multi-institutional evaluation of women at high-risk for developing breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p6-09-13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
Well-established risk factors for breast cancer (BC) include family history, BRCA mutations and biopsies with atypical hyperplasia (AH) or lobular carcinoma in situ (LCIS). Several institutions have registries of these high-risk women but outcomes from these registries require large numbers and long follow-up. We sought to compare characteristics between high-risk populations and evaluate early outcomes.
Methods
Women enrolled in IRB-approved high risk registries at NYU Langone Medical Center (NYU) and University of Vermont (UVM) were evaluated for risk category, uptake of prevention and development of breast cancer. Descriptive statistics were used to summarize the data and Pearson's Chi-Square and Fisher's Exact Tests were performed to compare the variables of interest among the two high risk registries.
Results
Between 2003-14, 1035 women enrolled in these high risk registries. There were significant differences in age and risk characteristics but we found a 99% concordance of variables collected between both high risk registries. Among all risk groups there was a low uptake of prevention opportunities, with 8% taking chemoprevention and 7% undergoing risk-reducing surgeries. Women with AH/LCIS accounted for 66% of those choosing chemoprevention while women with BRCA mutations accounted for 76% of those undergoing risk-reducing surgeries. To date, 43 women (4%) have been diagnosed with breast cancer. 86% were diagnosed with stage 0-1 disease and 70% had moderate or poorly differentiated cancers. There was no significant difference in background risk characteristics when comparing those with breast cancer to those who have not yet developed breast cancer.
Table 1. Clinicopathologic Characteristics between UVM and NYUVARIABLESUVM (N=496, 48%)%NYU (N=539, 52%)%P-valueMEDIAN AGE (years)46 (20-75)50 (20-87)p<0.001RISK FACTORSOne or more 1° relative with BC4428928653p<0.001BRCA positive2559217p<0.001AH631324545p<0.001LCIS22411221p<0.001UPTAKE OF BC PREVENTION METHODSChemoprevention2755410p<0.01Prophylactic bilateral mastectomy10.2458p<0.001Bilateral salpingo-oophorectomy10.2428p<0.001DEVELOPED BC316122p<0.01STAGE OF BC000542p<0.01I2684650 IIA, IIB2618 IIIA, IIIB, IIIC31000
Conclusions
Despite the low uptake of chemoprevention and risk reducing surgery, only 4% of patients went on to develop breast cancer in the study period. The majority of cancers involved moderate or high-grade lesions and were early stage, suggesting a benefit to participation in surveillance programs. We have demonstrated a high degree of concordance between high risk registries, suggesting no barriers to multi-institutional collaboration. High risk registries represent an important resource for studies into methods to prevent breast cancer and improve outcomes from this disease.
Citation Format: Wood M, Schnabel F, Chun J, Schwartz S, Rounds T, Cuke M. Multi-institutional evaluation of women at high-risk for developing breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P6-09-13.
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Affiliation(s)
- M Wood
- University of Vermont, Burlington, VT; New York University Langone Medical Center, NY, NY
| | - F Schnabel
- University of Vermont, Burlington, VT; New York University Langone Medical Center, NY, NY
| | - J Chun
- University of Vermont, Burlington, VT; New York University Langone Medical Center, NY, NY
| | - S Schwartz
- University of Vermont, Burlington, VT; New York University Langone Medical Center, NY, NY
| | - T Rounds
- University of Vermont, Burlington, VT; New York University Langone Medical Center, NY, NY
| | - M Cuke
- University of Vermont, Burlington, VT; New York University Langone Medical Center, NY, NY
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Schnabel F, Guth A, Axelrod D, Chun J, Schwartz S, Shapiro R. Abstract P2-12-12: MarginProbe device use and re-excision rates for breast conservation surgeries. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p2-12-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Current methods of intraoperative assessment of lumpectomy margins are limited. Previous studies have found a lower rate of re-excisions with the adjunctive use of the MarginProbe device (Dune Medical Devices Ltd, Israel). The purpose of this study was to compare the tumor characteristics and re-excision rates before and after the use of MarginProbe for patients who had breast conservation surgery (BCS) at our institution.
Methods: The Breast Cancer Database of our medical center was queried for patients who underwent BCS from 1/2010-3/2015 by three breast surgeons. 2 surgeons used the MarginProbe to direct excision of additional margins at the time of primary lumpectomy surgery and 1 surgeon performed routine 6-surface cavity shavings. We compared our historical data (1/2010-12/2014) to MarginProbe data (1/2015-4/2015). The following variables were included: age, mammographic breast density, tumor characteristics, and re-excision rates. Statistical analyses were performed using Pearson's Chi-Square and Fisher's Exact Tests.
Results: We had a total of 1201 women who had BCS among the 3 breast surgeons. The median age was 61 years. The median invasive size was 1.2 cm. Majority of cancers were early stage (stage 0, I), invasive ductal carcinoma (61%), ER-positive (86%), PR-positive (74%), and Her2Neu-negative (88%). These tumor characteristics were not statistically different in the pre- and post-MarginProbe groups. The majority of patients had dense breasts (51%) and density did not differ among the pre- and post-MarginProbe groups (p=0.86). For the surgeons who used the MarginProbe for margin assessment at the time of surgery, the re-excision rate fell from 17% to 0% and 35% to 20% during the 4-month period. In contrast, the surgeon who routinely performed 6-surface shavings had a re-excision rate that fell from 13% to 12% in the same time period. 88% of MarginProbe readings were false positive. There was one false negative reading.
Table 1. Tumor CharacteristicsVARIABLESTotal N=1201%No MarginProbe (N=1144, 95%)%MarginProbe (N=57, 5%)%P-valueTUMOR STAGE0292242782414240.95I64454614543053 IIA, IIB22319211191221 IIIA, IIIB, IIIC39338312 IV30.330.300 HISTOLOGYDuctal carcinoma in situ305252892516280.75Invasive ductal carcinoma73061695613561 Invasive lobular carcinoma1129107959 Invasive other54553512 ESTROGEN RECEPTOR STATUSNegative16314157146110.46Positive101486963865189 PROGESTERONE RECEPTOR STATUSNegative307262942613230.56Positive86774823744477 HER2-NEU STATUSNegative788887538835810.22Positive92108610614 Equivocal19217225
Conclusions: Routine use of the MarginProbe device was associated with lower re-excision rates compared to historical data and concurrent 6-cavity shaving approach. Better intraoperative margin assessment and lower re-excision rates will decrease the burden of breast cancer on patients and the health care system and support the practice of breast conserving surgery.
Citation Format: Schnabel F, Guth A, Axelrod D, Chun J, Schwartz S, Shapiro R. MarginProbe device use and re-excision rates for breast conservation surgeries. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P2-12-12.
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Affiliation(s)
| | - A Guth
- NYU Langone Medical Center, NY, NY
| | | | - J Chun
- NYU Langone Medical Center, NY, NY
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Guydish J, Passalacqua E, Pagano A, Martínez C, Le T, Chun J, Tajima B, Docto L, Garina D, Delucchi K. An international systematic review of smoking prevalence in addiction treatment. Addiction 2016; 111:220-30. [PMID: 26392127 PMCID: PMC4990064 DOI: 10.1111/add.13099] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 04/30/2015] [Accepted: 08/06/2015] [Indexed: 11/27/2022]
Abstract
AIMS Smoking prevalence is higher among people enrolled in addiction treatment compared with the general population, and very high rates of smoking are associated with opiate drug use and receipt of opiate replacement therapy (ORT). We assessed whether these findings are observed internationally. METHODS PubMed, PsycINFO and the Alcohol and Alcohol Problems Science Database were searched for papers reporting smoking prevalence among addiction treatment samples, published in English, from 1987 to 2013. Search terms included tobacco use, cessation and substance use disorders using and/or Boolean connectors. For 4549 papers identified, abstracts were reviewed by multiple raters; 239 abstracts met inclusion criteria and these full papers were reviewed for exclusion. Fifty-four studies, collectively comprising 37,364 participants, were included. For each paper we extracted country, author, year, sample size and gender, treatment modality, primary drug treated and smoking prevalence. RESULTS The random-effect pooled estimate of smoking across people in addiction treatment was 84% [confidence interval (CI) = 79, 88%], while the pooled estimate of smoking prevalence across matched population samples was 31% (CI = 29, 33%). The difference in the pooled estimates was 52% (CI = 48%, 57%, P < .0001). Smoking rates were higher in programs treating opiate use compared with alcohol use [odds ratio (OR) = 2.52, CI = 2.00, 3.17], and higher in ORT compared to out-patient programs (OR = 1.42, CI = 1.19, 1.68). CONCLUSIONS Smoking rates among people in addiction treatment are more than double those of people with similar demographic characteristics. Smoking rates are also higher in people being treated for opiate dependence compared with people being treated for alcohol use disorder.
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Affiliation(s)
- Joseph Guydish
- University of California, San Francisco, Philip R. Lee Institute for Health Policy Studies, 3333 California Street, Suite 265, San Francisco, CA 94118
| | - Emma Passalacqua
- University of California, San Francisco, Philip R. Lee Institute for Health Policy Studies, 3333 California Street, Suite 265, San Francisco, CA 94118
| | - Anna Pagano
- University of California, San Francisco, Philip R. Lee Institute for Health Policy Studies, 3333 California Street, Suite 265, San Francisco, CA 94118
| | - Cristina Martínez
- Tobacco Control Unit, Cancer Prevention and Control Department, Catalan Institute of Oncology-Institut d'Investigació Biomèdica de Bellvitge – IDIBELL, Barcelona, Spain
| | - Thao Le
- University of California, San Francisco, Philip R. Lee Institute for Health Policy Studies, 3333 California Street, Suite 265, San Francisco, CA 94118
| | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, 11-1 Daehyun-Dong, Seodaemun-Gu, Seoul, 120-750, South Korea
| | - Barbara Tajima
- University of California, San Francisco, Philip R. Lee Institute for Health Policy Studies, 3333 California Street, Suite 265, San Francisco, CA 94118
| | - Lindsay Docto
- University of California, San Francisco, Philip R. Lee Institute for Health Policy Studies, 3333 California Street, Suite 265, San Francisco, CA 94118
| | - Daria Garina
- University of California, San Francisco, Philip R. Lee Institute for Health Policy Studies, 3333 California Street, Suite 265, San Francisco, CA 94118
| | - Kevin Delucchi
- University of California, San Francisco, Department of Psychiatry, University of California San Francisco, San Francisco, CA
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Manschreck TC, Chun J, Merrill AM, Maher BA, Boshes RA, Glatt SJ, Faraone SV, Tsuang MT, Seidman LJ. Impaired motor performance in adolescents at familial high-risk for schizophrenia. Schizophr Res 2015; 168:44-9. [PMID: 26165939 DOI: 10.1016/j.schres.2015.06.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 06/13/2015] [Accepted: 06/15/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND The Harvard Adolescent Family High Risk (FHR) Study examined multiple domains of function in young relatives of individuals diagnosed with schizophrenia to identify precursors of the illness. One such area is motor performance, which is deviant in people with schizophrenia and in children at risk for schizophrenia, usually offspring. The present study assessed accuracy of motor performance and degree of lateralization in FHR adolescents and young adults. METHODS Subjects were 33 non-psychotic, first-degree relatives of individuals diagnosed with schizophrenia, and 30 non-psychotic comparison subjects (NpC), ranging in age from 13 to 25 who were compared using a line-drawing task. RESULTS FHR individuals exhibited less precise and coordinated line drawing but greater degree of lateralization than controls. Performance on the linedrawing task was correlated with degree of genetic loading, a possible predictor of higher risk for schizophrenia in the pedigree. CONCLUSIONS The observation of increased motor deviance and increased lateralization in FHR can be utilized in identification and initiation of the treatment in those at high risk in order to prevent or delay the full manifestation of this devastating condition. The use of a rigorously quantified measure is likely to add to the sensitivity of measuring motor performance, especially when impairments may be subtle.
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Affiliation(s)
- T C Manschreck
- Commonwealth Research Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Laboratory for Clinical and Experimental Psychopathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Fall River, MA, USA.
| | - J Chun
- Commonwealth Research Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Laboratory for Clinical and Experimental Psychopathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Fall River, MA, USA
| | - A M Merrill
- Commonwealth Research Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Laboratory for Clinical and Experimental Psychopathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Fall River, MA, USA
| | - B A Maher
- Laboratory for Clinical and Experimental Psychopathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Fall River, MA, USA
| | - R A Boshes
- Commonwealth Research Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Laboratory for Clinical and Experimental Psychopathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Fall River, MA, USA
| | - S J Glatt
- Psychiatric Genetic Epidemiology & Neurobiology Laboratory (PsychGENe Lab), Medical Genetics Research Center, Syracuse, NY, USA; Departments of Psychiatry and of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - S V Faraone
- Departments of Psychiatry and of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - M T Tsuang
- Center for Behavior Genomics, Department of Psychiatry, Institute of Genomic Medicine, University of California, San Diego, La Jolla, CA, USA
| | - L J Seidman
- Commonwealth Research Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA; Harvard Medical School, Department of Psychiatry, Massachusetts Mental Health Center Division of Public Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA, USA; Harvard Medical School, Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
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Kim HHS, Chun J. Examining the Effects of Parental Influence on Adolescent Smoking Behaviors: A Multilevel Analysis of the Global School-Based Student Health Survey (2003-2011). Nicotine Tob Res 2015; 18:934-42. [PMID: 26272211 DOI: 10.1093/ntr/ntv172] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 08/03/2015] [Indexed: 11/12/2022]
Abstract
INTRODUCTION Based on a large cross-national dataset, we investigated the role of parental smoking (a risk factor) and parental supervision (a protective factor) on the frequency of smoking by youths in resource-poor countries. In addition, we tested for cross-level interactions between these two predictors and national wealth on the outcome variable. METHODS Pooled cross-sectional data from the Global School-based Student Health Survey (2003-2011) were analyzed, which consists of 58956 students in 31 countries. Hierarchical linear models were estimated to examine the associations between the two parental influence variables and adolescent smoking. RESULTS Among the control variables, age, gender (male), the experience of being bullied, frequency of getting into physical fights, truancy, and anxiety were significantly related to higher frequency of smoking. With respect to the main predictors, both at the individual level, parental supervision was negatively associated with adolescent smoking, while parental smoking was positively related to it. Two cross-level interaction terms were also observed. National wealth (GDP per capita) significantly moderated, that is, increased, these effects of parental influence on how often the adolescents smoked. CONCLUSIONS We provided new evidence on the factors related to adolescent smoking in low-income countries, a topic that has received very little attention. We showed that the associations between parental influences and adolescent smoking behaviors are not constant but vary according to the level of economic development. Future research should incorporate this comparative dimension in elaborating and specifying the conditions under which parental influences and other predictors differentially affect adolescent smoking. IMPLICATIONS Prior research on adolescent smoking focused on developed countries. Based on the secondary analysis of the Global School-based Student Health Survey (2003-2011), this study examines the associations between parental influence (parental smoking and parental supervision) on the frequency of youth smoking behaviors in resource-poor countries. We show that parental smoking is positively related to adolescent smoking, while parental supervision is negatively related to it. We also find that these two associations vary according to national wealth: both effects are stronger in a country with higher per capita GDP.
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Affiliation(s)
| | - JongSerl Chun
- Department of Social Welfare, Ewha Womans University, Seoul, Republic of Korea
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Park OJ, Yi H, Jeon J, Kang SS, Koo KT, Kum KY, Chun J, Yun CH, Han S. Pyrosequencing Analysis of Subgingival Microbiota in Distinct Periodontal Conditions. J Dent Res 2015; 94:921-7. [DOI: 10.1177/0022034515583531] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Subgingival microorganisms are potentially associated with periodontal diseases. However, changes in the subgingival microbiota during the progress of periodontal diseases are poorly understood. In this study, we analyzed bacterial communities in the subgingival paper point samples from 32 Korean individuals with no sign of disease, gingivitis, or periodontitis using 454 FLX Titanium pyrosequencing. A total of 256,113 reads representing 26 phyla, 433 genera, and 1,016 species were detected. Bacteroidetes, Fusobacteria, Synergistetes, and Spirochaetes were the abundant phyla in periodontitis subjects, whereas Firmicutes and Proteobacteria were identified as the dominant phyla in the gingivitis and healthy subjects, respectively. Although high levels of Porphyromonas, Fusobacterium, Fretibacterium, Rothia, Filifactor, and Treponema genera were observed in the periodontitis subjects, Streptococcus, Capnocytophaga, Leptotrichia, and Haemophilus genera were found at high frequency in the gingivitis subjects. Species including Porphyromonas gingivalis, Fusobacterium nucleatum, and Fretibacterium fastidiosum were significantly increased in periodontitis subjects. On the other hand, Streptococcus pseudopneumoniae, Haemophilus parainfluenzae, and Leptotrichia hongkongensis were preferentially observed in the gingivitis subjects. Intriguingly, the halophile Halomonas hamiltonii was revealed as a predominant species in the healthy subjects. Based on Fast UniFrac analysis, distinctive bacterial clusters were classified for the healthy, gingivitis, and periodontitis state. The current findings might be useful for understanding the pathogenesis, diagnosis, and treatment of periodontal diseases.
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Affiliation(s)
- O.-J. Park
- Department of Oral Microbiology and Immunology, DRI and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
| | - H. Yi
- School of Biosystem and Biomedical Science, Korea University, Seoul, Korea
| | - J.H. Jeon
- Division of High-Risk Pathogen Research, Center for Infectious Diseases, National Institute of Health, Chungbuk, Korea
| | - S.-S. Kang
- Department of Oral Microbiology and Immunology, DRI and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
| | - K.-T. Koo
- Department of Periodontology, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, Seoul, Korea
| | - K.-Y. Kum
- Department of Conservative Dentistry, Seoul National University Dental Hospital, School of Dentistry, Seoul National University, Seoul, Korea
| | - J. Chun
- School of Biological Sciences and Institute of Bioinformatics, Seoul National University, Seoul, Korea
- Chunlab, Inc., Seoul, Korea
| | - C.-H. Yun
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Korea
| | - S.H. Han
- Department of Oral Microbiology and Immunology, DRI and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Korea
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Mirendil H, Thomas EA, De Loera C, Okada K, Inomata Y, Chun J. LPA signaling initiates schizophrenia-like brain and behavioral changes in a mouse model of prenatal brain hemorrhage. Transl Psychiatry 2015; 5:e541. [PMID: 25849980 PMCID: PMC4462599 DOI: 10.1038/tp.2015.33] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 01/15/2015] [Accepted: 02/09/2015] [Indexed: 12/13/2022] Open
Abstract
Genetic, environmental and neurodevelopmental factors are thought to underlie the onset of neuropsychiatric disorders such as schizophrenia. How these risk factors collectively contribute to pathology is unclear. Here, we present a mouse model of prenatal intracerebral hemorrhage--an identified risk factor for schizophrenia--using a serum-exposure paradigm. This model exhibits behavioral, neurochemical and schizophrenia-related gene expression alterations in adult females. Behavioral alterations in amphetamine-induced locomotion, prepulse inhibition, thigmotaxis and social interaction--in addition to increases in tyrosine hydroxylase-positive dopaminergic cells in the substantia nigra and ventral tegmental area and decreases in parvalbumin-positive cells in the prefrontal cortex--were induced upon prenatal serum exposure. Lysophosphatidic acid (LPA), a lipid component of serum, was identified as a key molecular initiator of schizophrenia-like sequelae induced by serum. Prenatal exposure to LPA alone phenocopied many of the schizophrenia-like alterations seen in the serum model, whereas pretreatment with an antagonist against the LPA receptor subtype LPA1 prevented many of the behavioral and neurochemical alterations. In addition, both prenatal serum and LPA exposure altered the expression of many genes and pathways related to schizophrenia, including the expression of Grin2b, Slc17a7 and Grid1. These findings demonstrate that aberrant LPA receptor signaling associated with fetal brain hemorrhage may contribute to the development of some neuropsychiatric disorders.
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Affiliation(s)
- H Mirendil
- Department of Molecular and Cellular Neuroscience, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA, USA
| | - E A Thomas
- Department of Molecular and Cellular Neuroscience, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA, USA
| | - C De Loera
- Department of Molecular and Cellular Neuroscience, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA, USA
| | - K Okada
- Advanced Medical Research Laboratories, Research Division, Mitsubishi Tanabe Pharma Corporation, Toda-shi, Saitama, Japan
| | - Y Inomata
- Pharmacology Research Laboratories I, Research Division, Mitsubishi Tanabe Pharma Corporation, Yokohama, Japan
| | - J Chun
- Department of Molecular and Cellular Neuroscience, Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, CA, USA
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