1.Bird-Egg syndrome diagnosed by ImmunoCap ISAC
Jaeeun CHUNG ; David LEE ; Yoonha HWANG
Allergy, Asthma & Respiratory Disease 2023;11(3):161-163
Adult-onset egg allergy is rare compared to child-onset egg allergy, and the component-resolved diagnosis test is effective in evaluating food allergy. We herein report a 24-year-old woman with late-onset egg-yolk allergy diagnosed as bird-egg syndrome. The prolonged exposure to pet parrots' dander or dropping through the respiratory system caused sensitization to the Gal d 5 component and resulted in a cross-reaction to egg yolk. Since the patient was suspected of the syndrome by her history, the skin prick test, ISAC ImmunoCAP, and serum ImmunoCAP test were performed. By confirming Gal d 5 component by ISAC ImmunoCAP, the patient was diagnosed with the syndrome. In patients with newly adult-onset food allergy, the clinician must identify the environmental conditions which can cause cross-sensitization and perform the causative component test.
2.The role of complement C5a receptor in DPSC odontoblastic differentiation and in vivo reparative dentin formation.
Muhammad IRFAN ; Ji-Hyun KIM ; Hassan MARZBAN ; David A REED ; Anne GEORGE ; Lyndon F COOPER ; Seung CHUNG
International Journal of Oral Science 2022;14(1):7-7
Therapeutic dentin regeneration remains difficult to achieve, and a majority of the attention has been given to anabolic strategies to promote dentinogenesis directly, whereas, the available literature is insufficient to understand the role of inflammation and inflammatory complement system on dentinogenesis. The aim of this study is to determine the role of complement C5a receptor (C5aR) in regulating dental pulp stem cells (DPSCs) differentiation and in vivo dentin regeneration. Human DPSCs were subjected to odontogenic differentiation in osteogenic media treated with the C5aR agonist and C5aR antagonist. In vivo dentin formation was evaluated using the dentin injury/pulp-capping model of the C5a-deficient and wild-type mice. In vitro results demonstrate that C5aR inhibition caused a substantial reduction in odontogenic DPSCs differentiation markers such as DMP-1 and DSPP, while the C5aR activation increased these key odontogenic genes compared to control. A reparative dentin formation using the C5a-deficient mice shows that dentin regeneration is significantly reduced in the C5a-deficient mice. These data suggest a positive role of C5aR in the odontogenic DPSCs differentiation and tertiary/reparative dentin formation. This study addresses a novel regulatory pathway and a therapeutic approach for improving the efficiency of dentin regeneration in affected teeth.
Animals
;
Cell Differentiation/physiology*
;
Cells, Cultured
;
Complement C5a/metabolism*
;
Dental Pulp/physiology*
;
Dentin
;
Mice
;
Receptor, Anaphylatoxin C5a
;
Stem Cells
3.Impact of medical school responses during the COVID-19 pandemic on student satisfaction: a nationwide survey of US medical students
Isaac E. KIM JR. ; Daniel D. KIM ; Juliana E. KIM ; Elliott REBELLO ; David CHUNG ; Parker WOOLLEY ; Daniel LEE ; Brittany A. BORDEN ; Aaron WANG ; Douglas VILLALTA ; Agatha SUTHERLAND ; Sebastian DE ARMAS ; Matthew LIU ; Hannah KIM ; Grace Sora AHN ; Reed GEISLER ; Alexander YANG ; Bowon JOUNG ; John SLATE-ROMANO ; Michal RAJSKI ; Alison E. KIM ; Roxanne VREES ; Kristina MONTEIRO
Korean Journal of Medical Education 2022;34(2):167-174
Purpose:
Medical schools have faced various challenges in preparing their clinical students for the frontlines of a pandemic. This study investigated medical students’ satisfaction with their institutions during the coronavirus disease 2019 (COVID-19) pandemic with the intention of guiding educators in future public health crises.
Methods:
In this cross-sectional study surveying students in clinical rotations, the primary outcome was overall satisfaction regarding medical schools’ responses to the pandemic, and the four secondary outcomes were school communication, exposure to COVID-19, availability of personal protective equipment, and access to COVID-19 testing.
Results:
The survey was distributed to ten medical schools, of which 430 students responded for a response rate of 13.0%. While most students were satisfied (61.9%, n=266) with their schools’ response, more than one in five (21.9%, n=94) were dissatisfied. Among the four secondary outcomes, communication with students was most predictive of overall satisfaction.
Conclusion
In future crises, schools can best improve student satisfaction by prioritizing timely communication.
4.Diffusion-Weighted Imaging-Alone Endovascular Thrombectomy Triage in Acute Stroke: Simulating Diffusion-Perfusion Mismatch Using Machine Learning
Yoon-Chul KIM ; Woo-Keun SEO ; In-Young BAEK ; Ji-Eun LEE ; Ha-Na SONG ; Jong-Won CHUNG ; Chi Kyung KIM ; Kyungmi OH ; Sang-il SUH ; Oh Young BANG ; Gyeong-Moon KIM ; Jeffrey L. SAVER ; David S. LIEBESKIND
Journal of Stroke 2022;24(1):148-151
5.Asian Society of Gynecologic Oncology International Workshop 2018
Tae Wook KONG ; Hee Sug RYU ; Seung Cheol KIM ; Takayuki ENOMOTO ; Jin LI ; Kenneth H KIM ; Seung Hyuk SHIM ; Peng Hui WANG ; Suwanit THERASAKVICHYA ; Yusuke KOBAYASHI ; Maria LEE ; Tingyan SHI ; Shin Wha LEE ; Mikio MIKAMI ; Satoru NAGASE ; Myong Cheol LIM ; Jianliu WANG ; Sarikapan WILAILAK ; Sang Wun KIM ; Sook Hee HONG ; David SP TAN ; Masaki MANDAI ; Suk Joon CHANG ; Ruby Yun Ju HUANG ; Kimio USHIJIMA ; Jung Yun LEE ; Xiaojun CHEN ; Kazunori OCHIAI ; Taek Sang LEE ; Bingyi YANG ; Farhana KALAM ; Qiaoying LV ; Mohd Faizal AHMAD ; Muhammad Rizki YAZNIL ; Kanika Batra MODI ; Manatsawee MANOPUNYA ; Dae Hoon JEONG ; Arb aroon LERTKHACHONSUK ; Hyun Hoon CHUNG ; Hidemichi WATARI ; Seob JEON
Journal of Gynecologic Oncology 2019;30(2):e39-
The Asian Society of Gynecologic Oncology International Workshop 2018 on gynecologic oncology was held in the Ajou University Hospital, Suwon, Korea on the 24th to 25th August 2018. The workshop was an opportunity for Asian doctors to discuss the latest findings of gynecologic cancer, including cervical, ovarian, and endometrial cancers, as well as the future of fertility-sparing treatments, minimally invasive/radical/debulking surgery, radiotherapy, chemotherapy, targeted therapy, and immunotherapy. Clinical guidelines and position statement of Asian countries were presented by experts. Asian clinical trials for gynecologic cancers were reviewed and experts emphasized the point that original Asian study is beneficial for Asian patients. In Junior session, young gynecologic oncologists presented their latest research on gynecologic cancers.
Antineoplastic Agents
;
Asian Continental Ancestry Group
;
Drug Therapy
;
Education
;
Endometrial Neoplasms
;
Female
;
Gyeonggi-do
;
Humans
;
Immunotherapy
;
Korea
;
Ovarian Neoplasms
;
Radiotherapy
;
Uterine Cervical Neoplasms
6.Current Status and Growth of Nuclear Theranostics in Singapore
Hian Liang HUANG ; Aaron Kian Ti TONG ; Sue Ping THANG ; Sean Xuexian YAN ; Winnie Wing Chuen LAM ; Kelvin Siu Hoong LOKE ; Charlene Yu Lin TANG ; Lenith Tai Jit CHENG ; Gideon Su Kai OOI ; Han Chung LOW ; Butch Maulion MAGSOMBOL ; Wei Ying THAM ; Charles Xian Yang GOH ; Colin Jingxian TAN ; Yiu Ming KHOR ; Sumbul ZAHEER ; Pushan BHARADWAJ ; Wanying XIE ; David Chee Eng NG
Nuclear Medicine and Molecular Imaging 2019;53(2):96-101
The concept of theranostics, where individual patient-level biological information is used to choose the optimal therapy for that individual, has become more popular in the modern era of ‘personalised’ medicine. With the growth of theranostics, nuclear medicine as a specialty is uniquely poised to grow along with the ever-increasing number of concepts combining imaging and therapy. This special report summarises the status and growth of Theranostic Nuclear Medicine in Singapore.We will cover our experience with the use of radioiodine, radioiodinated metaiodobenzylguanidine, peptide receptor radionuclide therapy, prostate specific membrane antigen radioligand therapy, radium-223 and yttrium-90 selective internal radiation therapy.We also include a section on our radiopharmacy laboratory, crucial to our implementation of theranostic principles. Radionuclide theranostics has seen tremendous growth and we hope to be able to grow alongside to continue to serve the patients in Singapore and in the region.
Hope
;
Humans
;
Lutetium
;
Membranes
;
Nuclear Medicine
;
Prostate
;
Radium
;
Receptors, Peptide
;
Singapore
;
Theranostic Nanomedicine
;
Yttrium
7.Current Status and Growth of Nuclear Theranostics in Singapore
Hian Liang HUANG ; Aaron Kian Ti TONG ; Sue Ping THANG ; Sean Xuexian YAN ; Winnie Wing Chuen LAM ; Kelvin Siu Hoong LOKE ; Charlene Yu Lin TANG ; Lenith Tai Jit CHENG ; Gideon Su Kai OOI ; Han Chung LOW ; Butch Maulion MAGSOMBOL ; Wei Ying THAM ; Charles Xian Yang GOH ; Colin Jingxian TAN ; Yiu Ming KHOR ; Sumbul ZAHEER ; Pushan BHARADWAJ ; Wanying XIE ; David Chee Eng NG
Nuclear Medicine and Molecular Imaging 2019;53(2):96-101
The concept of theranostics, where individual patient-level biological information is used to choose the optimal therapy for that individual, has become more popular in the modern era of ‘personalised’ medicine. With the growth of theranostics, nuclear medicine as a specialty is uniquely poised to grow along with the ever-increasing number of concepts combining imaging and therapy. This special report summarises the status and growth of Theranostic Nuclear Medicine in Singapore.We will cover our experience with the use of radioiodine, radioiodinated metaiodobenzylguanidine, peptide receptor radionuclide therapy, prostate specific membrane antigen radioligand therapy, radium-223 and yttrium-90 selective internal radiation therapy.We also include a section on our radiopharmacy laboratory, crucial to our implementation of theranostic principles. Radionuclide theranostics has seen tremendous growth and we hope to be able to grow alongside to continue to serve the patients in Singapore and in the region.
8.Prognosis of Patients with Behavioral Variant Frontotemporal Dementia Who have Focal Versus Diffuse Frontal Atrophy.
Jin San LEE ; Na Yeon JUNG ; Young Kyoung JANG ; Hee Jin KIM ; Sang Won SEO ; Juyoun LEE ; Yeo Jin KIM ; Jae Hong LEE ; Byeong C KIM ; Kyung Won PARK ; Soo Jin YOON ; Jee H JEONG ; Sang Yun KIM ; Seung Hyun KIM ; Eun Joo KIM ; Key Chung PARK ; David S KNOPMAN ; Duk L NA
Journal of Clinical Neurology 2017;13(3):234-242
BACKGROUND AND PURPOSE: Only a few studies have investigated the relationship between different subtypes and disease progression or prognosis in patients with behavioral variant frontotemporal dementia (bvFTD). Since a localized injury often produces more focal signs than a diffuse injury, we hypothesized that the clinical characteristics differ between patients with bvFTD who show diffuse frontal lobe atrophy (D-type) on axial magnetic resonance imaging (MRI) scans versus those with focal or circumscribed frontal lobe atrophy (F-type). METHODS: In total, 94 MRI scans (74 scans from bvFTD and 20 scans from age-matched normal controls) were classified into 35 D- and 39 F-type bvFTD cases based on an axial MRI visual rating scale. We compared baseline clinical characteristics, progression in motor and cognitive symptoms, and survival times between D- and F-types. Survival analyses were performed for 62 of the 74 patients. RESULTS: While D-type performed better on neuropsychological tests than F-type at baseline, D-type had higher baseline scores on the Unified Parkinson's Disease Rating Scale (UPDRS) Part III. Evaluations of motor progression showed that the disease duration with motor symptoms was shorter in D-type than F-type. Moreover, the survival time was shorter in D-type (6.9 years) than F-type (9.4 years). Cox regression analyses revealed that a high UPDRS Part III score at baseline contributed to an increased risk of mortality, regardless of the pattern of atrophy. CONCLUSIONS: The prognosis is worse for D-type than for those with F-type. Shorter survival in D-type may be associated with the earlier appearance of motor symptoms.
Atrophy*
;
Disease Progression
;
Frontal Lobe
;
Frontotemporal Dementia*
;
Frontotemporal Lobar Degeneration
;
Humans
;
Magnetic Resonance Imaging
;
Mortality
;
Neurobehavioral Manifestations
;
Neuropsychological Tests
;
Parkinson Disease
;
Prognosis*
9.Development and Validation of an Attitudinal-Profiling Tool for Patients With Asthma.
Aileen DAVID-WANG ; David PRICE ; Sang Heon CHO ; James Chung Man HO ; Chong Kin LIAM ; Glenn NEIRA ; Pei Li TEH
Allergy, Asthma & Immunology Research 2017;9(1):43-51
PURPOSE: To develop a profiling tool which accurately assigns a patient to the appropriate attitudinal cluster for the management of asthma. METHODS: Attitudinal data from an online survey of 2,467 patients with asthma from 8 Asian countries/region, aged 18-50 years, having had ≥2 prescriptions in the previous 2 years and access to social media was used in a discriminant function analysis to identify a minimal set of questions for the Profiling Tool. A split-sample procedure based on 100 sets of randomly selected estimation and validation sub-samples from the original sample was used to cross-validate the Tool and assess the robustness of its predictive accuracy. RESULTS: Our Profiling Tool contained 10 attitudinal questions for the patient and 1 GINA-based level of asthma control question for the physician. It achieved a predictive accuracy of 76.2%. The estimation and validation sub-sample accuracies of 76.7% and 75.3%, respectively, were consistent with the tool's predictive accuracy at 95% confidence level; and their 1.4 percentage-points difference set upper-bound estimate for the degree of over-fitting. CONCLUSIONS: The Profiling Tool is highly predictive (>75%) of the attitudinal clusters that best describe patients with asthma in the Asian population. By identifying the attitudinal profile of the patient, the physician can make the appropriate asthma management decisions in practice. The challenge is to integrate its use into the consultation workflow and apply to areas where Internet resources are not available or patients who are not comfortable with the use of such technology.
Asia
;
Asian Continental Ancestry Group
;
Asthma*
;
Discriminant Analysis
;
Disease Management
;
Humans
;
Internet
;
Prescriptions
;
Social Media
10.Genomic and Molecular Characterization of Brain Tumors in Asian and Non-Asian Patients of Los Angeles: A Single Institution Analysis.
Courtney DUONG ; Thien NGUYEN ; John P SHEPPARD ; Vera ONG ; Lawrance K CHUNG ; Daniel T NAGASAWA ; Isaac YANG
Brain Tumor Research and Treatment 2017;5(2):64-69
BACKGROUND: Worldwide, approximately 2% of new cancers are of the brain. Five-year survival rates among brain cancer patients have been reported as a little over a third. Differences in clinical outcomes between brain tumor patients of different races remain poorly understood. METHODS: A retrospective chart review was performed on brain tumor resection patients≥18 years old. Demographics, treatment variables, and survival outcomes were collected. Primary outcomes were length of stay, recurrence rate, progression-free survival (PFS), and overall survival (OS). RESULTS: A total of 452 patients were included in analysis. Females and males had nearly a 1:1 ratio (n=242 and n=220, respectively). Mean age was 54.8 years (SD: 14.5 range: 18–90). Females composed 69% (n=48) of Asian patients; males constituted 31% (n=22). Mean age of the Asian patients was 55.9 years (SD: 14.6 range: 26–89). Asian-only cohort tumor pathologies included glioblastoma (GBM) (n=14), high-grade glioma (n=7), low-grade glioma (n=4), meningioma (n=38), and metastases (n=7). Of the 185 meningioma patients, non-Asian patients comprised 79% of the group (n=146). Of the 65 GBM patients in total, non-Asian patients made up 89% of the GBM cohort (n=58). There were no statistically significant differences between these groups of both cohorts in recurrence (p=0.1580 and p=0.6294, respectively), PFS (p=0.9662 and p=0.4048, respectively), or OS (p=0.3711 and p=0.8183, respectively). CONCLUSION: Studies evaluating the survival between patients of different racial backgrounds against several tumor varieties are rare. Patients of certain racial backgrounds may need additional consideration when being attended to despite the same mutational composition as their counterparts. Repeated studies using national databases may yield more conclusive results.
Asian Continental Ancestry Group*
;
Biomarkers
;
Brain Neoplasms*
;
Brain*
;
Cohort Studies
;
Continental Population Groups
;
Demography
;
Disease-Free Survival
;
Female
;
Glioblastoma
;
Glioma
;
Humans
;
Length of Stay
;
Male
;
Meningioma
;
Neoplasm Metastasis
;
Pathology
;
Recurrence
;
Retrospective Studies
;
Survival Rate

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