1.The Role of Knowledge and Personal Experience in Shaping Stigma Associated With COVID-19 and Mental Illness
Ji-Min YOO ; Ju-Wan KIM ; Seon-Young KIM ; Seunghyong RYU ; Ju-Yeon LEE ; Sook-In JUNG ; Jae-Min KIM ; Sung-Wan KIM
Psychiatry Investigation 2025;22(1):110-116
Objective:
Stigma influences perceptions of mental illness and novel diseases like coronavirus disease-2019 (COVID-19), often impeding healthcare access despite advancements in medical treatment. This study compares the stigma associated with COVID-19 and mental illness to identify factors that could help reduce stigma.
Methods:
An online survey was conducted in May 2023 among 1,500 participants aged 19 to 65 in South Korea, using a panel from Embrain, an online survey service. The survey assessed stigma and distress related to COVID-19 and mental illness using a validated questionnaire. It collected demographic and clinical data, evaluated COVID-19-related stigma, fear, and knowledge, and measured prejudice and attitudes toward psychiatric treatment. Personality traits were assessed using the Big Five Inventory (BFI)-10. Factors significantly associated with stigma scores were entered into linear regression analysis.
Results:
COVID-19-related stigma scores were significantly negatively correlated with knowledge of COVID-19 and positively correlated with fear of infection and age. Individuals with a history of COVID-19 infection had significantly lower scores on COVID-19-related stigma. Similarly, mental illness stigma was negatively correlated with knowledge of psychiatric treatment and positively correlated with age, as well as conscientiousness and neuroticism in the BFI. Personal experience with individuals with mental illness was associated with significantly lower stigma scores.
Conclusion
This study suggests that the mechanism-making stigma was similar in cases of traditional mental illness and a novel infectious disease. Both cognitive and experiential factors influence stigma. Educating the public about the disease and enabling interactions with affected individuals emerge as effective strategies for stigma reduction.
2.The Role of Knowledge and Personal Experience in Shaping Stigma Associated With COVID-19 and Mental Illness
Ji-Min YOO ; Ju-Wan KIM ; Seon-Young KIM ; Seunghyong RYU ; Ju-Yeon LEE ; Sook-In JUNG ; Jae-Min KIM ; Sung-Wan KIM
Psychiatry Investigation 2025;22(1):110-116
Objective:
Stigma influences perceptions of mental illness and novel diseases like coronavirus disease-2019 (COVID-19), often impeding healthcare access despite advancements in medical treatment. This study compares the stigma associated with COVID-19 and mental illness to identify factors that could help reduce stigma.
Methods:
An online survey was conducted in May 2023 among 1,500 participants aged 19 to 65 in South Korea, using a panel from Embrain, an online survey service. The survey assessed stigma and distress related to COVID-19 and mental illness using a validated questionnaire. It collected demographic and clinical data, evaluated COVID-19-related stigma, fear, and knowledge, and measured prejudice and attitudes toward psychiatric treatment. Personality traits were assessed using the Big Five Inventory (BFI)-10. Factors significantly associated with stigma scores were entered into linear regression analysis.
Results:
COVID-19-related stigma scores were significantly negatively correlated with knowledge of COVID-19 and positively correlated with fear of infection and age. Individuals with a history of COVID-19 infection had significantly lower scores on COVID-19-related stigma. Similarly, mental illness stigma was negatively correlated with knowledge of psychiatric treatment and positively correlated with age, as well as conscientiousness and neuroticism in the BFI. Personal experience with individuals with mental illness was associated with significantly lower stigma scores.
Conclusion
This study suggests that the mechanism-making stigma was similar in cases of traditional mental illness and a novel infectious disease. Both cognitive and experiential factors influence stigma. Educating the public about the disease and enabling interactions with affected individuals emerge as effective strategies for stigma reduction.
3.The Role of Knowledge and Personal Experience in Shaping Stigma Associated With COVID-19 and Mental Illness
Ji-Min YOO ; Ju-Wan KIM ; Seon-Young KIM ; Seunghyong RYU ; Ju-Yeon LEE ; Sook-In JUNG ; Jae-Min KIM ; Sung-Wan KIM
Psychiatry Investigation 2025;22(1):110-116
Objective:
Stigma influences perceptions of mental illness and novel diseases like coronavirus disease-2019 (COVID-19), often impeding healthcare access despite advancements in medical treatment. This study compares the stigma associated with COVID-19 and mental illness to identify factors that could help reduce stigma.
Methods:
An online survey was conducted in May 2023 among 1,500 participants aged 19 to 65 in South Korea, using a panel from Embrain, an online survey service. The survey assessed stigma and distress related to COVID-19 and mental illness using a validated questionnaire. It collected demographic and clinical data, evaluated COVID-19-related stigma, fear, and knowledge, and measured prejudice and attitudes toward psychiatric treatment. Personality traits were assessed using the Big Five Inventory (BFI)-10. Factors significantly associated with stigma scores were entered into linear regression analysis.
Results:
COVID-19-related stigma scores were significantly negatively correlated with knowledge of COVID-19 and positively correlated with fear of infection and age. Individuals with a history of COVID-19 infection had significantly lower scores on COVID-19-related stigma. Similarly, mental illness stigma was negatively correlated with knowledge of psychiatric treatment and positively correlated with age, as well as conscientiousness and neuroticism in the BFI. Personal experience with individuals with mental illness was associated with significantly lower stigma scores.
Conclusion
This study suggests that the mechanism-making stigma was similar in cases of traditional mental illness and a novel infectious disease. Both cognitive and experiential factors influence stigma. Educating the public about the disease and enabling interactions with affected individuals emerge as effective strategies for stigma reduction.
4.The Role of Knowledge and Personal Experience in Shaping Stigma Associated With COVID-19 and Mental Illness
Ji-Min YOO ; Ju-Wan KIM ; Seon-Young KIM ; Seunghyong RYU ; Ju-Yeon LEE ; Sook-In JUNG ; Jae-Min KIM ; Sung-Wan KIM
Psychiatry Investigation 2025;22(1):110-116
Objective:
Stigma influences perceptions of mental illness and novel diseases like coronavirus disease-2019 (COVID-19), often impeding healthcare access despite advancements in medical treatment. This study compares the stigma associated with COVID-19 and mental illness to identify factors that could help reduce stigma.
Methods:
An online survey was conducted in May 2023 among 1,500 participants aged 19 to 65 in South Korea, using a panel from Embrain, an online survey service. The survey assessed stigma and distress related to COVID-19 and mental illness using a validated questionnaire. It collected demographic and clinical data, evaluated COVID-19-related stigma, fear, and knowledge, and measured prejudice and attitudes toward psychiatric treatment. Personality traits were assessed using the Big Five Inventory (BFI)-10. Factors significantly associated with stigma scores were entered into linear regression analysis.
Results:
COVID-19-related stigma scores were significantly negatively correlated with knowledge of COVID-19 and positively correlated with fear of infection and age. Individuals with a history of COVID-19 infection had significantly lower scores on COVID-19-related stigma. Similarly, mental illness stigma was negatively correlated with knowledge of psychiatric treatment and positively correlated with age, as well as conscientiousness and neuroticism in the BFI. Personal experience with individuals with mental illness was associated with significantly lower stigma scores.
Conclusion
This study suggests that the mechanism-making stigma was similar in cases of traditional mental illness and a novel infectious disease. Both cognitive and experiential factors influence stigma. Educating the public about the disease and enabling interactions with affected individuals emerge as effective strategies for stigma reduction.
5.The Role of Knowledge and Personal Experience in Shaping Stigma Associated With COVID-19 and Mental Illness
Ji-Min YOO ; Ju-Wan KIM ; Seon-Young KIM ; Seunghyong RYU ; Ju-Yeon LEE ; Sook-In JUNG ; Jae-Min KIM ; Sung-Wan KIM
Psychiatry Investigation 2025;22(1):110-116
Objective:
Stigma influences perceptions of mental illness and novel diseases like coronavirus disease-2019 (COVID-19), often impeding healthcare access despite advancements in medical treatment. This study compares the stigma associated with COVID-19 and mental illness to identify factors that could help reduce stigma.
Methods:
An online survey was conducted in May 2023 among 1,500 participants aged 19 to 65 in South Korea, using a panel from Embrain, an online survey service. The survey assessed stigma and distress related to COVID-19 and mental illness using a validated questionnaire. It collected demographic and clinical data, evaluated COVID-19-related stigma, fear, and knowledge, and measured prejudice and attitudes toward psychiatric treatment. Personality traits were assessed using the Big Five Inventory (BFI)-10. Factors significantly associated with stigma scores were entered into linear regression analysis.
Results:
COVID-19-related stigma scores were significantly negatively correlated with knowledge of COVID-19 and positively correlated with fear of infection and age. Individuals with a history of COVID-19 infection had significantly lower scores on COVID-19-related stigma. Similarly, mental illness stigma was negatively correlated with knowledge of psychiatric treatment and positively correlated with age, as well as conscientiousness and neuroticism in the BFI. Personal experience with individuals with mental illness was associated with significantly lower stigma scores.
Conclusion
This study suggests that the mechanism-making stigma was similar in cases of traditional mental illness and a novel infectious disease. Both cognitive and experiential factors influence stigma. Educating the public about the disease and enabling interactions with affected individuals emerge as effective strategies for stigma reduction.
7.Psychological and Personality Characteristics Associated With COVID-19 Vaccination Behavior in Korean General Population
Seunghyong RYU ; Ju-Wan KIM ; Ju-Yeon LEE ; Young-Shin KANG ; Hee-Young SHIN ; Sook-In JUNG ; Jae-Min KIM ; Sung-Wan KIM
Journal of Korean Medical Science 2023;38(30):e234-
Background:
This study characterized coronavirus disease 2019 (COVID-19) vaccination behavior in the Korean general population using cluster analysis and explored related psychological factors.
Methods:
We categorized 1,500 individuals based on their attitudes toward COVID-19 vaccination using hierarchical clustering and identified their level of vaccine acceptance. We examined the associations between vaccine acceptance and behavioral and psychological characteristics.
Results:
Clustering revealed three groups according to vaccine acceptance: ‘totally accepting’ (n = 354, 23.6%), ‘somewhat accepting’ (n = 523, 34.9%), and ‘reluctant’ (n = 623, 41.5%). Approximately 60% of all participants who belonged to the ‘totally accepting’ and ‘somewhat accepting’ groups were willing to receive a COVID-19 vaccine despite concerns about its side effects. High vaccine acceptance was associated with older age, regular influenza vaccination, and trust in formal sources of information. Participants with high vaccine acceptance had higher levels of gratitude, extraversion, agreeableness, and conscientiousness, and lower levels of depression, anxiety, and neuroticism.
Conclusions
People weighed the benefits of COVID-19 vaccination against the risk of side effects when deciding to receive the COVID-19 vaccine. Our findings also indicate that this vaccination behavior may be affected by coping mechanisms and psychological factors.
8.Excretory-Secretory Products of Trichomonas vaginalis Cause Apoptosis in Mouse Sperm in Vitro
Jihyun KEUM ; Jaesook ROH ; Jae-Sook RYU ; Ki-Young RYU
The Korean Journal of Parasitology 2022;60(5):357-360
Excretory-secretory products (ESP) of T. vaginalis have been shown to inhibit sperm motility, viability, and functional integrity, leading to a decreased fertilization rate in vitro. This study investigated whether T. vaginalis induce apoptosis and ultrastructural changes of sperm using flow cytometry and electron microscopy. Incubation of sperm with T. vaginalis ESP increased phosphatidylserine externalization and DNA fragmentation, and decreased mitochondrial membrane potential. Transmission electron microscopy of sperm incubated with ESP revealed abnormal features such as distorted heads, broken necks, and acrosomes exocytosis. This is the first report that demonstrates a direct impact of T. vaginalis ESP on sperm apoptosis and architecture in vitro.
9.Signaling Role of Adipocyte Leptin in Prostate Cell Proliferation Induced by Trichomonas vaginalis
Jung-Hyun KIM ; Ik-Hwan HAN ; Su-Jin SHIN ; Sung-Yul PARK ; Hyo-Yeoung CHUNG ; Jae-Sook RYU
The Korean Journal of Parasitology 2021;59(3):235-249
Leptin is a type of adipokine mainly produced by adipocytes and reported to be overproduced in prostate cancer. However, it is not known whether it stimulates the proliferation of prostate cells. In this study, we investigated whether benign prostatic hyperplasia epithelial cells (BPH-1 cells) infected with Trichomonas vaginalis induced the proliferation of prostate cells via a leptin signaling pathway. To investigate the effect of crosstalk between adipocyte leptin and inflamed epithelial cell in proliferation of prostate cells, adipocytes 3T3-L1 cells were incubated in conditioned medium of BPH-1 cells infected with T. vaginalis (T. vaginalis-conditioned medium, TCM), and then the adipocyte-conditioned medium (ATCM) was identified to cause proliferation of prostate cells. BPH-1 cells incubated with live T. vaginalis released pro-inflammatory cytokines, and conditioned medium of these cells caused migration of adipocytes. When prostate stromal cells and BPH-1 cells were incubated with adipocyte conditioned medium containing leptin, their growth rates increased as did expression of the leptin receptor (known as OBR) and signaling molecules such as JAK2/STAT3, Notch and survivin. Moreover, blocking the OBR reduced this proliferation and the expression of leptin signaling molecules in response to ATCM. In conclusion, our findings show that inflamed BPH-1 cells infected with T. vaginalis induce the proliferation of prostate cells through leptin-OBR signaling. Therefore, it is likely that T. vaginalis contributes to prostate enlargement in BPH via adipocyte leptin released as a result of inflammation of the prostate.
10.Effect of the Recombinant Human Epidermal Growth Factor Ointment on Cutaneous Surgical Wounds Compared to Antibiotic Ointment
Sook In RYU ; Ko Eun KIM ; Jae Yeong JEONG ; Jong heon PARK ; Hye-Rim MOON ; Il-Hwan KIM
Annals of Dermatology 2021;33(6):549-552
Background:
Applying antibiotic ointment after skin surgery can decrease infection and improve scar. Epidermal growth factor (EGF) is known to be able to promote the growth and movement of epidermal cells to stimulate wound healing. Recombinant human EGF (rhEGF) ointment can be used in wet closed dressing to promotes wound healing and prevent complications by maintaining a wet environment.
Objective:
To compare the efficacy of rhEGF ointment and conventional antibiotic ointment after cutaneous resection.
Methods:
Patients who had excision procedures in two or more sites were enrolled. Each wound was assigned to the rhEGF group or the antibiotic ointment group. Wounds were subjected to Physician Global Assessment (PhGA), Patient Global Assessment (PGA), and Patient satisfaction assessment (PSA). The length and area of wounds, and melanin and erythema index (MI and EI) were also assessed for these wounds.
Results:
Among 11 patients with a total of 20 pairs of resection sites, PhGA, PGA, MI, and EI showed no significant difference between rhEGF and antibiotic ointment groups. However, changes in length and area of wounds showed significant differences between the two groups.
Conclusion
RhEGF ointment showed similar short-term cosmetic results with antibiotic ointment, and improved surgical results in regards of the wound size. Applying rhEGF could reduce the use of antibiotic ointments for cutaneous clean (class I) wound surgery.

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