1.Oncology-related emergencies discharged from the emergency department.
Si-Hua Yvonne GOH ; Juin Jie NG ; Shi-En Joanna CHAN ; Wei-Lin Tallie CHUA ; Venkataraman ANANTHARAMAN
Singapore medical journal 2025;66(2):97-101
INTRODUCTION:
Cancer patients attending emergency departments (EDs) often present with acute symptoms and are frequently admitted. This study aimed to characterise the profile of oncology patients who were discharged from the ED.
METHODS:
This was a retrospective audit of patients with cancer-related diagnoses who presented to the ED at the Singapore General Hospital (SGH) over a 6-month period from 1 October 2018 to 31 March 2019 and were directly discharged from the ED. Data was extracted from the hospital's electronic medical record system.
RESULTS:
Of the 492 participants included in the study, the majority were triaged as Priority 2 (61.4%), while 30.7% were triaged as Priority 3, 6.9% as Priority 1 and 1.0% as Priority 4. There was no statistical difference between the National Early Warning scores across the different triage categories in these patients. The most common complaint was (44.3%), followed by genitourinary symptoms (19.5%) and those related to devices, catheters or stomas (17.3%). More investigations of all types were done for patients being managed in Priority 1 (57.6%) than in the other triage categories (40.1% for Priority 2, 23.2% for Priority 3 and 12.0% for Priority 4). Treatment procedures carried out were mainly symptomatic (analgesics, antiemetics, proton pump inhibitors) for 79.8% of the patients. There were no significant differences in the proportion of patients requiring various treatment modalities among the triage categories.
CONCLUSION
Selected oncological patients may potentially be managed in an ambulatory setting.
Humans
;
Emergency Service, Hospital/statistics & numerical data*
;
Retrospective Studies
;
Female
;
Neoplasms/diagnosis*
;
Male
;
Singapore
;
Patient Discharge/statistics & numerical data*
;
Middle Aged
;
Aged
;
Triage
;
Adult
;
Emergencies
;
Aged, 80 and over
2.Anxiety in hospitalised families: lessons from the early phase of the COVID-19 pandemic.
Annushkha SINNATHAMBY ; Siau Hwei NG ; Amanda ZAIN ; Liangjian LU ; Celeste YONG ; Xinyi THONG ; Si Min CHAN
Singapore medical journal 2025;66(6):327-332
INTRODUCTION:
In the early phase of the coronavirus disease 2019 (COVID-19) pandemic, children with COVID-19 in Singapore required hospital isolation. We aimed to explore the psychological experiences of children and their caregivers isolated in a tertiary university hospital due to COVID-19.
METHODS:
A prospective mixed-methods design was used to evaluate the psychological status of hospitalised family units with one or more children aged <18 years who had severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Patient medical records were reviewed for demographic and clinical information. Parents and children ≥7 years of age underwent a psychologist-administered telephone-based interview. Self-reported, age-appropriate instruments, Short Mood and Feelings Questionnaire, and Screen for Adult/Child Anxiety-Related Disorders, were used to assess anxiety and depression, respectively. Participants were also interviewed qualitatively.
RESULTS:
Fifteen family units were hospitalised between March 2020 and May 2020. Of these, 13 (73%) family units were recruited. The median age of the children and median hospitalisation duration were 57 months and 21 days, respectively. Median number of COVID-19 polymerase chain reaction swabs performed for each child was eight. All children had asymptomatic to mild SARS-CoV-2 disease. The criteria indicative of anxiety disorder were met by 40% of adults and 80% of children, while the criteria indicative of separation anxiety were met by 60% of parents and 100% of children. One child met the criteria indicative of depression. Uncertainty, separation, prolonged hospitalisation and frequent swabs caused significant reported anxiety.
CONCLUSIONS
Families, especially children, had heightened anxiety while in hospital isolation. Therefore, home-based recovery from COVID-19 and psychological support for children and their families, with focus on early recognition of anxiety disorders, are recommended. We support review of paediatric isolation policy as the pandemic evolves.
Humans
;
COVID-19/epidemiology*
;
Male
;
Child
;
Female
;
Singapore/epidemiology*
;
Anxiety/etiology*
;
Prospective Studies
;
Adolescent
;
Hospitalization
;
SARS-CoV-2
;
Adult
;
Child, Preschool
;
Pandemics
;
Parents/psychology*
;
Caregivers/psychology*
;
Family/psychology*
;
Depression
;
Patient Isolation/psychology*
;
Surveys and Questionnaires
4.Catalpa bignonioides extract improves exercise performance through regulation of growth and metabolism in skeletal muscles
Hoibin Jeong ; Dong-joo Lee ; Sung-Pil Kwon ; SeonJu Park ; Song-Rae Kim ; Seung Hyun Kim ; Jae-Il Park ; Deug-chan Lee ; Kyung-Min Choi ; WonWoo Lee ; Ji-Won Park ; Bohyun Yun ; Su-Hyeon Cho ; Kil-Nam Kim
Asian Pacific Journal of Tropical Biomedicine 2024;14(2):47-54
Objective: To evaluate the effects of Catalpa bignonioides fruit extract on the promotion of muscle growth and muscular capacity in vitro and in vivo. Methods: Cell viability was measured using the 3-(4,5-dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide assay. Cell proliferation was assessed using a 5-bromo-2’-deoxyuridine (BrdU) assay kit. Western blot analysis was performed to determine the protein expressions of related factors. The effects of Catalpa bignonioides extract were investigated in mice using the treadmill exhaustion test and whole-limb grip strength assay. Chemical composition analysis was performed using high-performance liquid chromatography (HPLC). Results: Catalpa bignonioides extract increased the proliferation of C2C12 mouse myoblasts by activating the Akt/mTOR signaling pathway. It also induced metabolic changes, increasing the number of mitochondria and glucose metabolism by phosphorylating adenosine monophosphate-activated protein kinase. In an in vivo study, the extract-treated mice showed improved motor abilities, such as muscular endurance and grip strength. Additionally, HPLC analysis showed that vanillic acid may be the main component of the Catalpa bignonioides extract that enhanced muscle strength. Conclusions: Catalpa bignonioides improves exercise performance through regulation of growth and metabolism in skeletal muscles, suggesting its potential as an effective natural agent for improving muscular strength.
5.Presenteeism in Agricultural, Forestry and Fishing Workers:Based on the 6th Korean Working Conditions Survey
Sang-Hee HONG ; Eun-Chul JANG ; Soon-Chan KWON ; Hwa-Young LEE ; Myoung-Je SONG ; Jong-Sun KIM ; Mid-Eum MOON ; Sang-Hyeon KIM ; Ji-Suk YUN ; Young-Sun MIN
Journal of Agricultural Medicine & Community Health 2024;49(1):1-12
Objectives:
Presenteeism is known to be a much more economically damaging social cost than disease rest while going to work despite physical pain. Since COVID-19, social discussions on the sickness benefit have been taking place as a countermeasure against presenteeism, and in particular, farmers and fishermen do not have an institutional mechanism for livelihood support when a disease other than work occurs. This study attempted to examine the relationship between agricultural, fishing, and forestry workers and presenteeism using the 6th Korean Work Conditions Survey.
Methods:
From October 2020 to January 2021, data from the 6th working conditions survey conducted on 17 cities and provinces in Korea were used, and a total of 34,981 people were studied. Control variables were gender, age, self-health assessment, education level, night work, shift work, monthly income, occupation, working hours per week, and employment status.
Results:
As a result of the analysis, farmers and fishermen showed the characteristics of the self-employed and the elderly, and as a result of the regression analysis, when farmers and fishermen analyzed the relationship with presenteeism tendency compared to other industry workers, farmers and fishermen increased by 23% compared to other industry groups.
Conclusion
This study is significant in that it has representation by utilizing the 6th working conditions survey and objectively suggests the need for a sickness benefit for farmers and fishermen who may be overlooked in the sickness benefit.
6.Presenteeism in Agricultural, Forestry and Fishing Workers:Based on the 6th Korean Working Conditions Survey
Sang-Hee HONG ; Eun-Chul JANG ; Soon-Chan KWON ; Hwa-Young LEE ; Myoung-Je SONG ; Jong-Sun KIM ; Mid-Eum MOON ; Sang-Hyeon KIM ; Ji-Suk YUN ; Young-Sun MIN
Journal of Agricultural Medicine & Community Health 2024;49(1):1-12
Objectives:
Presenteeism is known to be a much more economically damaging social cost than disease rest while going to work despite physical pain. Since COVID-19, social discussions on the sickness benefit have been taking place as a countermeasure against presenteeism, and in particular, farmers and fishermen do not have an institutional mechanism for livelihood support when a disease other than work occurs. This study attempted to examine the relationship between agricultural, fishing, and forestry workers and presenteeism using the 6th Korean Work Conditions Survey.
Methods:
From October 2020 to January 2021, data from the 6th working conditions survey conducted on 17 cities and provinces in Korea were used, and a total of 34,981 people were studied. Control variables were gender, age, self-health assessment, education level, night work, shift work, monthly income, occupation, working hours per week, and employment status.
Results:
As a result of the analysis, farmers and fishermen showed the characteristics of the self-employed and the elderly, and as a result of the regression analysis, when farmers and fishermen analyzed the relationship with presenteeism tendency compared to other industry workers, farmers and fishermen increased by 23% compared to other industry groups.
Conclusion
This study is significant in that it has representation by utilizing the 6th working conditions survey and objectively suggests the need for a sickness benefit for farmers and fishermen who may be overlooked in the sickness benefit.
7.Presenteeism in Agricultural, Forestry and Fishing Workers:Based on the 6th Korean Working Conditions Survey
Sang-Hee HONG ; Eun-Chul JANG ; Soon-Chan KWON ; Hwa-Young LEE ; Myoung-Je SONG ; Jong-Sun KIM ; Mid-Eum MOON ; Sang-Hyeon KIM ; Ji-Suk YUN ; Young-Sun MIN
Journal of Agricultural Medicine & Community Health 2024;49(1):1-12
Objectives:
Presenteeism is known to be a much more economically damaging social cost than disease rest while going to work despite physical pain. Since COVID-19, social discussions on the sickness benefit have been taking place as a countermeasure against presenteeism, and in particular, farmers and fishermen do not have an institutional mechanism for livelihood support when a disease other than work occurs. This study attempted to examine the relationship between agricultural, fishing, and forestry workers and presenteeism using the 6th Korean Work Conditions Survey.
Methods:
From October 2020 to January 2021, data from the 6th working conditions survey conducted on 17 cities and provinces in Korea were used, and a total of 34,981 people were studied. Control variables were gender, age, self-health assessment, education level, night work, shift work, monthly income, occupation, working hours per week, and employment status.
Results:
As a result of the analysis, farmers and fishermen showed the characteristics of the self-employed and the elderly, and as a result of the regression analysis, when farmers and fishermen analyzed the relationship with presenteeism tendency compared to other industry workers, farmers and fishermen increased by 23% compared to other industry groups.
Conclusion
This study is significant in that it has representation by utilizing the 6th working conditions survey and objectively suggests the need for a sickness benefit for farmers and fishermen who may be overlooked in the sickness benefit.
8.Guidelines for Manufacturing and Application of Organoids: Brain
Taehwan KWAK ; Si-Hyung PARK ; Siyoung LEE ; Yujeong SHIN ; Ki-Jun YOON ; Seung-Woo CHO ; Jong-Chan PARK ; Seung-Ho YANG ; Heeyeong CHO ; Heh-In IM ; Sun-Ju AHN ; Woong SUN ; Ji Hun YANG
International Journal of Stem Cells 2024;17(2):158-181
This study offers a comprehensive overview of brain organoids for researchers. It combines expert opinions with technical summaries on organoid definitions, characteristics, culture methods, and quality control. This approach aims to enhance the utilization of brain organoids in research. Brain organoids, as three-dimensional human cell models mimicking the nervous system, hold immense promise for studying the human brain. They offer advantages over traditional methods, replicating anatomical structures, physiological features, and complex neuronal networks. Additionally, brain organoids can model nervous system development and interactions between cell types and the microenvironment. By providing a foundation for utilizing the most human-relevant tissue models, this work empowers researchers to overcome limitations of two-dimensional cultures and conduct advanced disease modeling research.
9.Phenolic Compounds Isolated from Juncus decipiens and Their Effects on Osteoblast Differentiation in the Mouse Mesenchymal Stem Cell Line C3H10T1/2
Chan Hee CHO ; Si Hyeon CHAE ; Seon Hee KIM ; Ki Hyun KIM
Natural Product Sciences 2024;30(2):135-142
As part of our current projects to discover biologically active compounds from natural sources, we conducted a phytochemical investigation of Juncus decipiens, a species generally distributed throughout Korea. J. decipiens has been used in traditional Chinese medicine to control diuresis for strangury and clear out heart fire. The phytochemical investigation of the EtOH extract of J. decipiens led to the isolation of five phenolic compounds (1–5) via semi-preparative HPLC purification. The chemical structures of the isolated compounds were identified as isosaponarin (1), isovitexin 7,2′′-di-O-glucoside (2), 4-O-feruloylquinic acid (3), 5-O-feruloylquinic acid (4), and 3-O-caffeoylquinic acid (5) based on comparisons of their spectroscopic and physical properties with those reported in previous studies. Notably, this is the first report of the presence of compounds (1–4) in J. decipiens. Then, compounds 1–5 were tested to determine their effects on osteogenesis and adipogenesis in the mouse mesenchymal stem cell line C3H10T1/2. We found that quinic acid derivatives (3–5) promoted the osteogenic differentiation of stem cells. These findings demonstrate that the bioactive quinic acid derivatives might be effective for the treatment of menopause-associated syndromes, such as osteoporosis, as the isolated compounds were shown to promote osteogenesis of stem cells.
10.Tivozanib-induced activation of the mitochondrial apoptotic pathway and suppression of epithelial-to-mesenchymal transition in oral squamous cell carcinoma
Nak-Eun CHOI ; Si-Chan PARK ; In-Ryoung KIM
The Korean Journal of Physiology and Pharmacology 2024;28(3):197-207
The potential of tivozanib as a treatment for oral squamous cell carcinoma (OSCC) was explored in this study. We investigated the effects of tivozanib on OSCC using the Ca9-22 and CAL27 cell lines. OSCC is a highly prevalent cancer type with a significant risk of lymphatic metastasis and recurrence, which necessitates the development of innovative treatment approaches. Tivozanib, a vascular endothelial growth factor receptor inhibitor, has shown efficacy in inhibiting neovascularization in various cancer types but has not been thoroughly studied in OSCC. Our comprehensive assessment revealed that tivozanib effectively inhibited OSCC cells. This was accompanied by the suppression of Bcl-2, a reduction in matrix metalloproteinase levels, and the induction of intrinsic pathway-mediated apoptosis. Furthermore, tivozanib contributed to epithelial-to-mesenchymal transition (EMT) inhibition by increasing E-cadherin levels while decreasing N-cadherin levels. These findings highlight the substantial anticancer potential of tivozanib in OSCC and thus its promise as a therapeutic option. Beyond reducing cell viability and inducing apoptosis, the capacity of tivozanib to inhibit EMT and modulate key proteins presents the possibility of a paradigm shift in OSCC treatment.

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