1.Trivalent fowl adenovirus vaccine (serotype-4/8b/11) provides efficient protection with long duration of immunity
Dam-Hee PARK ; Kyeong-Cheol MIN ; Na-Ri KIM ; Sung-Sik YOO ; Injoong YOON ; Jongseo MO
Journal of Veterinary Science 2026;27(3):e28-
Objective:
This study evaluated a novel trivalent inactivated FAdV vaccine containing antigens from FAdV-4, 8b, and 11.
Methods:
An SD1356-like FAdV-8b strain, representing newly emerging variants in Asia and the Middle East, was included as an immunogen. Prior to vaccination-challenge trials, pathogenicity of FAdV-4, 8b, and 11 was assessed in chickens via oral, intramuscular, and intravenous routes. These models were used to determine the minimum protective dose.Cross-neutralization assays were performed using sera from monovalent vaccinations for each serotype. Duration of immunity was evaluated in specific pathogen-free chickens following a single vaccine dose.
Results:
Intravenous challenge produced the highest mortality across all serotypes, including the relatively low-pathogenic FAdV-11. A vaccine dose of 107.0TCID50 /bird induced strong neutralizing antibody responses and provided complete protection against virulent strains.Sera showed no cross-neutralization between heterologous serotypes, emphasizing the necessity of multivalent formulations. Protective antibody titers were maintained up to 78 weeks of age.
Conclusions
and Relevance: The trivalent vaccine provides effective protection against predominant FAdV-4, 8b, and 11 strains. These findings support the use of multivalent vaccines to achieve broad and sustained immunity against emerging FAdV infections in poultry.
2.Factors associated with the timely diagnosis of malaria and the utilization of types of healthcare facilities: a retrospective study in the Republic of Korea
HyunJung KIM ; Sangwoo TAK ; So-dam LEE ; Seongwoo PARK ; Kyungwon HWANG
Osong Public Health and Research Perspectives 2024;15(2):159-167
Objectives:
This study aimed to analyze trends in the timely diagnosis of malaria cases over the past 10 years in relation to the utilization of different types of healthcare facilities.
Methods:
The study included 3,697 confirmed and suspected cases of malaria reported between January 1, 2013, and December 31, 2022, in the national integrative disease and healthcare management system. Some cases lacking a case report or with information missing from the case report were excluded from the analysis. A generalized linear model with a Poisson distribution was constructed to estimate rate ratios and 95% confidence intervals adjusted for other variables, such as distance.
Results:
When cases involving diagnosis >5 days after symptom onset in confirmed patients (5DD) were examined according to the type of healthcare facility, the rate ratio of 5DD cases was found to be higher for public health facilities than for tertiary hospitals. Specifically, the rate ratio was higher when the diagnosis was established at a tertiary hospital, even after a participant had visited primary or secondary hospitals. In an analysis adjusted for the distance to each participant’s healthcare facility, the results did not differ substantially from the results of the crude analysis.
Conclusion
It is imperative to improve the diagnostic capabilities of public facilities and raise awareness of malaria at primary healthcare facilities for effective prevention and control.
3.CYR61 Is Overexpressed in Human Melanoma Tissue Ex Vivo and Promotes Melanoma Cell Survival and Proliferation Through Its BindingLigand Integrin β3 In Vitro
Yoon Jin LEE ; Ki Dam KIM ; Sukh Que PARK ; Dong Sung KIM ; Yu Sung CHOI ; Hae Seon NAM ; Sang Han LEE ; Moon Kyun CHO
Annals of Dermatology 2024;36(6):392-394
4.THE RELATIONSHIP BETWEEN DEPRESSION, ANXIETY, STRESS AND INTERNET USE AMONG HIGH SCHOOL STUDENTS
Son Quang Le ; Dieu Thi Thanh Bui ; Duyen Thi Le ; Thao Thi Phuong Nguyen ; Nga Thi Kim Dam
ASEAN Journal of Psychiatry 2024;25(5):1-16
THE RELATIONSHIP BETWEEN DEPRESSION, ANXIETY, STRESS AND INTERNET USE AMONG HIGH SCHOOL STUDENTS
The prevalence of mental health issues among high school students has raised concerns
globally, with depression, anxiety, and stress being common challenges. This study
investigates the relationship between depression, anxiety, stress, and internet use among
high school students in Da Nang, Vietnam. The short Internet Addiction Test (s-IAT) and
Depression Anxiety Stress Scales (DASS-21) were used to assess internet addiction and
mental health symptoms. Data were analyzed using correlation analysis and regression
models. Results revealed significant positive correlations between internet use and
symptoms of stress, anxiety, and depression, highlighting the importance of addressing
problematic internet usage patterns. Additionally, associations were found between
demographic variables, such as parental occupations and socioeconomic status, and
mental health outcomes, emphasizing the interconnected nature of individual, familial,
and societal factors. The study underscores the need for targeted interventions to promote
healthy internet habits and mitigate potential harms among high school students. By
understanding the complex interplay between internet use and mental health outcomes,
stakeholders can develop effective strategies to support the well-being of adolescents in
an increasingly digital world. This research contributes to a deeper understanding of the
socio-ecological factors shaping adolescent mental health and informs future intervention
efforts. ASEAN Journal of Psychiatry, Vol. 25 (6) June, 2024; 1-16.
5.Minireview: A Need for an Adequate Diet Program for Postmenopausal Women with Obesity in the Republic of Korea
So Hee PARK ; Bo Dam KIM ; Jae Hong SANG ; Hae-Hyeog LEE ; Tae-Hee KIM
Journal of Menopausal Medicine 2023;29(2):45-50
Women undergo various physical changes because of hormonal changes occurring after menopause. Some representative changes caused by the reduction in estrogen levels in these women are dyslipidemia, abnormal lipoprotein levels, obesity, weight gain, and changes in body fat distribution. A characteristic of women approaching menopause is the shift of fat from their hips and thighs to their abdomen. Notably, fat accumulation is common in internal organs, resulting in male-pattern obesity among women approaching menopause; therefore, these women require more exercise therapy than premenopausal women to prevent and treat obesity. To the best of our knowledge, no effective exercise therapy guidelines have been established for postmenopausal women; therefore, I aimed to suggest more effective diet and exercise therapies for postmenopausal women with obesity. For this purpose, I organized the diet and exercise protocol by collaborating with an obstetrician and a researcher specializing in sports medicine; further, this protocol was actually applied to all participants. The results indicated that the protocol is effective in reducing weight; however, joint pain was commonly noted in participants who dropped out of the program. Based on the evaluation of joint pain, this study found that it is necessary to perform exercise therapy by avoiding weight-bearing activities and reinforcing personalized joint strengthening exercises because reduced estrogen level is an important factor exacerbating arthritis in postmenopausal women.
6.Overexpression of Dock180 and Elmo1 in Melanoma is Associated with Cell Survival and Migration
Yoon Jin LEE ; Yu Sung CHOI ; Sooyoung KIM ; Jae Young HEO ; Dong Sung KIM ; Ki Dam KIM ; Seung Min NAM ; Hae Seon NAM ; Sang Han LEE ; Dongsic CHOI ; Moon Kyun CHO
Annals of Dermatology 2023;35(6):439-450
Background:
Melanoma is one of the most aggressive and metastatic skin cancers. Although overexpression of Dock180 and Elmo1 has been identified in various cancers, including glioma, ovarian cancer, and breast cancer, their expression and functions in melanoma remain unknown.
Objective:
This study aims to confirm the expression of Dock180 and Elmo1, their underlying mechanisms, and roles in melanoma.
Methods:
Both immunohistochemical staining and Western blotting were used to confirm expression of Dock180 and Elmo1 in human melanoma. To identify roles of Dock180 and Elmo1 in cell survival, apoptosis and migration, downregulation of Dock180 or Elmo1 in melanoma cells with small interfering RNA (siRNA) was performed.
Results:
We identified overexpression of Dock180 and Elmo1 in human melanoma compared to normal skin ex vivo. Inhibition of Dock180 or Elmo1 following siRNA in melanoma cells reduced cell viability and increased apoptosis as supported by increased proportion of cells with Annexin V-PE (+) staining and sub-G0/G1 peak in cell cycle analysis. Moreover, inhibition of Dock180 or Elmo1 regulated apoptosis-related proteins, showing downregulation of Bcl-2, caspase-3, and PARP and upregulation of Bax, PUMA, cleaved caspase-3, and cleaved PARP. Furthermore, knockdown of Dock180 and Elmo1 in melanoma cells reduced cell migration and changed cellular signaling pathways including ERK and AKT. Vemurafenib decreased cell viability in concentration-dependent manner, while transfection with Dock180- or Elmo1-specific siRNA in melanoma cells significantly reduced cell viability.
Conclusion
Our results suggest that both Dock180 and Elmo1 may be associated with cancer progression, and can be potential targets for treatment of melanoma.
7.Distribution of Neuroglobin in Pericytes is Associated with Blood-Brain Barrier Leakage against Cerebral Ischemia in Mice
Yeojin KIM ; Mingee KIM ; So-Dam KIM ; Naeun YOON ; Xiaoying WANG ; Gyu-Un BAE ; Yun Seon SONG
Experimental Neurobiology 2022;31(5):289-298
With emerging data on the various functions of neuroglobin (Ngb), such as neuroprotection and neurogenesis, we investigated the role of Ngb in the neurovascular unit (NVU) of the brain. To study the distribution and function of Ngb after cerebral ischemia, transient middle cerebral artery occlusion (tMCAO) was performed in mice. Brain immunostaining and fluorescence-activated cell sorting were used to analyze the role of Ngb according to the location and cell type. In normal brain tissue, it was observed that Ngb was distributed not only in neurons but also around the brain’s blood vessels. Interestingly, Ngb was largely expressed in platelet-derived growth factor receptor β (PDGFRβ)-positive pericytes in the NVU. After tMCAO, Ngb levels were significantly decreased in the core of the infarct, and Ngb and PDGFRβ-positive pericytes were detached from the vasculature. In contrast, in the penumbra of the infarct, PDGFRβ-positive pericytes expressing Ngb were increased compared with that in the core of the infarct. Moreover, the cerebral blood vessels, which have Ngb-positive PDGFRβ pericytes, showed reduced blood-brain barrier (BBB) leakage after tMCAO. It showed that Ngb-positive PDGFRβ pericytes stayed around the endothelial cells and reduced the BBB leakage in the NVU. Our results indicate that Ngb may play a role in attenuating BBB leakage in part by its association with PDGFRβ. In this study, the distribution and function of Ngb in the pericytes of the cerebrovascular system have been elucidated, which contributes to the treatment of stroke through a new function of Ngb.
8.The usefulness of trabecular bone score in patients with ankylosing spondylitis
Seoung Wan NAM ; Yoon-Kyoung SUNG ; Dam KIM ; Soo-Kyung CHO ; Yoonah SONG ; Yun Young CHOI ; Yongjin SIM ; Tae-Hwan KIM
The Korean Journal of Internal Medicine 2021;36(5):1211-1220
Background:
s/Aims: This study was performed to reveal the usefulness of the trabecular bone score (TBS) in assessing bone strength in patients with ankylosing spondylitis (AS) in comparison with dual-energy X-ray absorptiometry (DXA) methods.
Methods:
A total of 215 AS patients (75.8% male) were enrolled from a single university hospital in Korea. Demographic and clinical information were assessed. Patients completed X-rays of the cervical and lumbar spine (L-spine), and spinal ankyloses were quantified using the modified Stoke AS Spine Score (mSASSS). Hip, anteroposterior and lateral L-spine bone mineral density (BMD) and TBS were assessed by DXA methods. Clinical characteristics and bone strength measurement results were compared between male and female AS patients. The accuracy of each bone strength evaluation method in predicting Fracture Risk Assessment Tool (FRAX) scores indicating moderate or higher fracture risk was compared by receiver operating characteristic curves in patients aged ≥ 40 years. Correlations between each bone strength measurement method and mSASSS were examined.
Results:
Male patients showed higher mSASSS and less prevalent peripheral joint involvement compared to female patients (p < 0.05). TBS, hip BMD, and L-spine lateral BMD showed comparably high areas under the curve (AUCs) for predicting FRAX-major osteoporotic fractures (MOF) ≥ 10% (AUC ranged 0.72 to 0.76). TBS negatively correlated with mSASSS in both male and female patients (p < 0.01).
Conclusions
TBS could predict the risk of MOF and is not influenced by spinal osteoproliferation in AS patients, even in those with advanced spinal changes.
9.The Influence of Women Dental Hygienists’ Work–Family Balance on Happiness Level in Dental Clinics
Ae-Jung IM ; Yun-woo KIM ; Su-jung KIM ; Seung-yeon KIM ; Eo-jin KIM ; So-dam MOON ; Su-min SHIN ; Hae-in JEONG ; Hee-Ae JEONG ; Hee-Jung LIM
Journal of Dental Hygiene Science 2021;21(3):158-167
Background:
To identify work–family balance and level of happiness among married women dental hygienists in Seoul and Gyeonggi Province. The goal of this study is to use the outcome as basic data to determine the compatibility of dental hygienists with work and family, systems, and improvement of happiness levels.
Methods:
From July 3 to August 10, 2020, 250 dental hygienists in Seoul and Gyeonggi Province were targeted. The questionnaire comprised 65 questions, including general characteristics (perception of work–family balance, perception of work–family balance system, job satisfaction, parenting type, happiness level) whether or not they were implemented. The results were obtained through a self-control questionnaire.
Results:
The perception of work–family balance was significantly different in job rank and average income, while that of the work– family balance system had significant differences in workplace type, total work experience, current job work experience, childcare system status, and parental leave period. Happiness level and job satisfaction were significantly different in job rank, average income, and childcare system status. Additionally, the perception of work–family balance and that of the work–family balance system showed a positive correlation with job satisfaction and happiness level. Finally, the perception of married women dental hygienists toward work–family compatibility was determined, where the higher the satisfaction with the job, the higher the level of happiness.
Conclusion
To improve the work–family balance and job satisfaction of dental hygienists and their levels of happiness, changes in social perception and improvement of the working environment such as proper staffing, flexible work systems, and incentive systems should be considered.
10.Reliability and Quality of Korean YouTube Videos for Education Regarding Gout
Bon San KOO ; Dam KIM ; Jae-Bum JUN
Journal of Korean Medical Science 2021;36(45):e303-
Background:
YouTube has become an increasingly popular educational tool and an important source of healthcare information. We investigated the reliability and quality of the information in Korean-language YouTube videos about gout.
Methods:
We performed a comprehensive electronic search on April 2, 2021, using the following keywords—“gout,” “acute gout,” “gouty arthritis,” “gout treatment,” and “gout attack”—and identified 140 videos in the Korean language. Two rheumatologists then categorized the videos into three groups: “useful,” “misleading,” and “personal experience.”Reliability was determined using a five-item questionnaire modified from the DISCERN validation tool, and overall quality scores were based on the Global Quality Scale (GQS).
Results:
Among the 140 videos identified, 105 (75.0%), 29 (20.7%), and 6 (4.3%) were categorized as “useful,” “misleading,” and “personal experience,” respectively. Most videos in the “useful” group were created by rheumatologists (70.5%). The mean DISCERN and GQS scores in the “useful” group (3.3 ± 1.0 and 3.8 ± 0.7) were higher than those in the “misleading” (0.9 ± 1.0 and 1.9 ± 0.6) and “personal experience” groups (0.8 ± 1.2 and 2.0 ± 0.8) (P < 0.001 for both the DISCERN and GQS tools).
Conclusion
Approximately 75% of YouTube videos that contain educational material regarding gout were useful; however, we observed some inaccuracies in the medical information provided. Healthcare professionals should closely monitor media content and actively participate in the development of videos that provide accurate medical information.


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