1.Cohort profile: a nationwide retrospective cohort of mortality in people living with HIV in Korea, 1985-2020
Taeyoung KIM ; Yoonhee JUNG ; Koun KIM ; Jung Wan PARK ; Jeonghee YU ; Sung-il CHO
Epidemiology and Health 2025;47(1):e2025002-
The increasing number of people living with human immunodeficiency virus (HIV) in Korea has prompted interest in using the national surveillance system as a database for studying their health. To investigate the relationships between socio-demographic and epidemiological characteristics and mortality rates, a nationwide retrospective cohort was formed by integrating surveillance data with the Cause of Death Statistics from Statistics Korea. This integration included incidence reports, epidemiological investigations, and death reports from the surveillance data, enriched with detailed mortality information from the Cause of Death data. The cohort comprised 17,199 adult Korean individuals diagnosed with HIV infection from 1985 to 2020. By the end of 2020, 2,721 of these individuals were confirmed deceased. The sex ratio of the study participants was 14.3:1.0 (male to female), with 78.2% being under 50 years old at the time of diagnosis. Sexual contact was identified as the primary transmission route, accounting for 75.7% of cases. HIV disease emerged as the predominant cause of death, representing two-thirds (1,817 of 2,721) of the fatalities, followed by injuries and trauma, malignancies, and cardiovascular diseases. Recommendations for further cohort studies may be submitted to the Korea Disease Control and Prevention Agency.
2.Cohort profile: a nationwide retrospective cohort of mortality in people living with HIV in Korea, 1985-2020
Taeyoung KIM ; Yoonhee JUNG ; Koun KIM ; Jung Wan PARK ; Jeonghee YU ; Sung-il CHO
Epidemiology and Health 2025;47(1):e2025002-
The increasing number of people living with human immunodeficiency virus (HIV) in Korea has prompted interest in using the national surveillance system as a database for studying their health. To investigate the relationships between socio-demographic and epidemiological characteristics and mortality rates, a nationwide retrospective cohort was formed by integrating surveillance data with the Cause of Death Statistics from Statistics Korea. This integration included incidence reports, epidemiological investigations, and death reports from the surveillance data, enriched with detailed mortality information from the Cause of Death data. The cohort comprised 17,199 adult Korean individuals diagnosed with HIV infection from 1985 to 2020. By the end of 2020, 2,721 of these individuals were confirmed deceased. The sex ratio of the study participants was 14.3:1.0 (male to female), with 78.2% being under 50 years old at the time of diagnosis. Sexual contact was identified as the primary transmission route, accounting for 75.7% of cases. HIV disease emerged as the predominant cause of death, representing two-thirds (1,817 of 2,721) of the fatalities, followed by injuries and trauma, malignancies, and cardiovascular diseases. Recommendations for further cohort studies may be submitted to the Korea Disease Control and Prevention Agency.
3.Cohort profile: a nationwide retrospective cohort of mortality in people living with HIV in Korea, 1985-2020
Taeyoung KIM ; Yoonhee JUNG ; Koun KIM ; Jung Wan PARK ; Jeonghee YU ; Sung-il CHO
Epidemiology and Health 2025;47(1):e2025002-
The increasing number of people living with human immunodeficiency virus (HIV) in Korea has prompted interest in using the national surveillance system as a database for studying their health. To investigate the relationships between socio-demographic and epidemiological characteristics and mortality rates, a nationwide retrospective cohort was formed by integrating surveillance data with the Cause of Death Statistics from Statistics Korea. This integration included incidence reports, epidemiological investigations, and death reports from the surveillance data, enriched with detailed mortality information from the Cause of Death data. The cohort comprised 17,199 adult Korean individuals diagnosed with HIV infection from 1985 to 2020. By the end of 2020, 2,721 of these individuals were confirmed deceased. The sex ratio of the study participants was 14.3:1.0 (male to female), with 78.2% being under 50 years old at the time of diagnosis. Sexual contact was identified as the primary transmission route, accounting for 75.7% of cases. HIV disease emerged as the predominant cause of death, representing two-thirds (1,817 of 2,721) of the fatalities, followed by injuries and trauma, malignancies, and cardiovascular diseases. Recommendations for further cohort studies may be submitted to the Korea Disease Control and Prevention Agency.
4.Cohort profile: a nationwide retrospective cohort of mortality in people living with HIV in Korea, 1985-2020
Taeyoung KIM ; Yoonhee JUNG ; Koun KIM ; Jung Wan PARK ; Jeonghee YU ; Sung-il CHO
Epidemiology and Health 2025;47(1):e2025002-
The increasing number of people living with human immunodeficiency virus (HIV) in Korea has prompted interest in using the national surveillance system as a database for studying their health. To investigate the relationships between socio-demographic and epidemiological characteristics and mortality rates, a nationwide retrospective cohort was formed by integrating surveillance data with the Cause of Death Statistics from Statistics Korea. This integration included incidence reports, epidemiological investigations, and death reports from the surveillance data, enriched with detailed mortality information from the Cause of Death data. The cohort comprised 17,199 adult Korean individuals diagnosed with HIV infection from 1985 to 2020. By the end of 2020, 2,721 of these individuals were confirmed deceased. The sex ratio of the study participants was 14.3:1.0 (male to female), with 78.2% being under 50 years old at the time of diagnosis. Sexual contact was identified as the primary transmission route, accounting for 75.7% of cases. HIV disease emerged as the predominant cause of death, representing two-thirds (1,817 of 2,721) of the fatalities, followed by injuries and trauma, malignancies, and cardiovascular diseases. Recommendations for further cohort studies may be submitted to the Korea Disease Control and Prevention Agency.
5.Elevated osteopontin reflects systemic inflammation in experimental autoimmune encephalomyelitis
Sungmoo HONG ; Kyungsook JUNG ; Taeyoung KANG ; Meejung AHN ; Changjong MOON ; Jeongtae KIM ; Taekyun SHIN
Anatomy & Cell Biology 2025;58(4):615-623
We examined the expression and localization of osteopontin (OPN) in various organs in mice with experimental autoimmune encephalomyelitis (EAE). To evaluate the level of OPN in blood and various tissues, enzyme-linked immunosorbent assay and western blot analysis of OPN were performed. The serum level of OPN was significantly increased in mice with EAE, and OPN was upregulated in all tissues examined, including the liver, kidneys, intestines, and spinal cord.OPN immunoreactivity was noted in inflammatory cells (mainly macrophages) and was enhanced in constitutively expressed cell types in the examined organs. In sum, OPN, a pro-inflammatory and immunomodulatory mediator, was elevated in all tissues following EAE induction, resulting in increased blood concentrations. These findings suggest that OPN may function as a key extracellular matrix component contributing to systemic disorders in autoimmune disease models.
6.Laparoscopic Ovariectomy in a Horse with Ovarian Fibroma
Taehyun KIM ; Jong-pil SEO ; Ji-youl JUNG ; Jae-Hoon KIM ; Taeyoung KANG ; Eun-bee LEE
Journal of Veterinary Clinics 2025;42(1):49-54
A 4-year-old thoroughbred mare was referred to the Jeju National University Equine Hospital as it exhibited stallion-like behavior and was unmanageable during training. A transrectal ultrasound revealed an enlarged left ovary. We decided on a standing laparoscopic ovariectomy through the left flank. Three portals were positioned to permit triangulation for optimal visualization with minimal incisions. The enlarged ovary was resected successfully. Histological examination confirmed the presence of a fibroma. The mare recovered without complications and returned to racing within 3 months post-surgery. The successful outcome seen in this mare indicates that laparoscopic surgery has multiple advantages, including faster recovery times and minimal scarring. This approach is recommended for mares presenting with ovarian fibromas, particularly those intended for a future career in athletics.
7.Epidemiological characteristics and risk factors of suspected and confirmed mpox cases during the 2022-2023 epidemic in the Capital Region, Korea
Mingyeol SHIM ; Soo Hyeon CHO ; Seung Eun LEE ; Taeyoung KIM
Epidemiology and Health 2024;46(1):e2024092-
OBJECTIVES:
This study investigated the general characteristics of laboratory-confirmed mpox patients in the Capital Region of Korea, as well as the risk factors for mpox infection, particularly focusing on the characteristics of polymerase chain reaction (PCR)-positive and PCR-negative cases.
METHODS:
We investigated 160 adults, excluding 4 minors, from 164 suspected mpox patients reported in Seoul, Gyeonggi, Incheon, and Gangwon from June 21, 2022 to October 31, 2023. Data were collected via telephone and face-to-face interviews. A statistical analysis of the general characteristics of the infection was conducted using frequency analysis and logistic regression.
RESULTS:
Of the 160 suspected cases of mpox, 59.3% (n=95) tested positive via mpox-PCR. Among the confirmed cases, 97.9% (n=93) were male. PCR-positive patients typically presented with genital and anal skin rashes or mucosal lesions, accompanied by pain. Additionally, 35.5% (n=33) of the male patients had human immunodeficiency virus (HIV) infections. Most confirmed cases (94.7%, 90/95) were believed to have contracted mpox through sexual contact during the maximal incubation period of 21 days prior to symptom onset, with a significant number reporting same-sex or casual contact. The most commonly collected and highest-yielding specimens from PCR-positive patients were from skin or mucosal lesions, whereas blood samples demonstrated the lowest percent positivity.
CONCLUSIONS
In the Capital Region, most PCR-positive cases were male patients in their 30s who had sexual contacts and exhibited symptoms, aligning with findings from previous studies. These results provide a foundation for the differential diagnosis concerning mpox infection and the selection of PCR-test samples in clinical settings.
8.Epidemiological characteristics and risk factors of suspected and confirmed mpox cases during the 2022-2023 epidemic in the Capital Region, Korea
Mingyeol SHIM ; Soo Hyeon CHO ; Seung Eun LEE ; Taeyoung KIM
Epidemiology and Health 2024;46(1):e2024092-
OBJECTIVES:
This study investigated the general characteristics of laboratory-confirmed mpox patients in the Capital Region of Korea, as well as the risk factors for mpox infection, particularly focusing on the characteristics of polymerase chain reaction (PCR)-positive and PCR-negative cases.
METHODS:
We investigated 160 adults, excluding 4 minors, from 164 suspected mpox patients reported in Seoul, Gyeonggi, Incheon, and Gangwon from June 21, 2022 to October 31, 2023. Data were collected via telephone and face-to-face interviews. A statistical analysis of the general characteristics of the infection was conducted using frequency analysis and logistic regression.
RESULTS:
Of the 160 suspected cases of mpox, 59.3% (n=95) tested positive via mpox-PCR. Among the confirmed cases, 97.9% (n=93) were male. PCR-positive patients typically presented with genital and anal skin rashes or mucosal lesions, accompanied by pain. Additionally, 35.5% (n=33) of the male patients had human immunodeficiency virus (HIV) infections. Most confirmed cases (94.7%, 90/95) were believed to have contracted mpox through sexual contact during the maximal incubation period of 21 days prior to symptom onset, with a significant number reporting same-sex or casual contact. The most commonly collected and highest-yielding specimens from PCR-positive patients were from skin or mucosal lesions, whereas blood samples demonstrated the lowest percent positivity.
CONCLUSIONS
In the Capital Region, most PCR-positive cases were male patients in their 30s who had sexual contacts and exhibited symptoms, aligning with findings from previous studies. These results provide a foundation for the differential diagnosis concerning mpox infection and the selection of PCR-test samples in clinical settings.
9.Epidemiological characteristics and risk factors of suspected and confirmed mpox cases during the 2022-2023 epidemic in the Capital Region, Korea
Mingyeol SHIM ; Soo Hyeon CHO ; Seung Eun LEE ; Taeyoung KIM
Epidemiology and Health 2024;46(1):e2024092-
OBJECTIVES:
This study investigated the general characteristics of laboratory-confirmed mpox patients in the Capital Region of Korea, as well as the risk factors for mpox infection, particularly focusing on the characteristics of polymerase chain reaction (PCR)-positive and PCR-negative cases.
METHODS:
We investigated 160 adults, excluding 4 minors, from 164 suspected mpox patients reported in Seoul, Gyeonggi, Incheon, and Gangwon from June 21, 2022 to October 31, 2023. Data were collected via telephone and face-to-face interviews. A statistical analysis of the general characteristics of the infection was conducted using frequency analysis and logistic regression.
RESULTS:
Of the 160 suspected cases of mpox, 59.3% (n=95) tested positive via mpox-PCR. Among the confirmed cases, 97.9% (n=93) were male. PCR-positive patients typically presented with genital and anal skin rashes or mucosal lesions, accompanied by pain. Additionally, 35.5% (n=33) of the male patients had human immunodeficiency virus (HIV) infections. Most confirmed cases (94.7%, 90/95) were believed to have contracted mpox through sexual contact during the maximal incubation period of 21 days prior to symptom onset, with a significant number reporting same-sex or casual contact. The most commonly collected and highest-yielding specimens from PCR-positive patients were from skin or mucosal lesions, whereas blood samples demonstrated the lowest percent positivity.
CONCLUSIONS
In the Capital Region, most PCR-positive cases were male patients in their 30s who had sexual contacts and exhibited symptoms, aligning with findings from previous studies. These results provide a foundation for the differential diagnosis concerning mpox infection and the selection of PCR-test samples in clinical settings.
10.Comparative Study of Indocyanine Green Intravenous Injection and the Inflation-Deflation Method for Assessing Resection Margins in Segmentectomy for Lung Cancer: A Single-Center Retrospective Study
Seon Yong BAE ; Taeyoung YUN ; Ji Hyeon PARK ; Bubse NA ; Kwon Joong NA ; Samina PARK ; Hyun Joo LEE ; In Kyu PARK ; Chang Hyun KANG ; Young Tae KIM
Journal of Chest Surgery 2024;57(5):450-457
Background:
The inflation-deflation (ID) method has long been the standard for intraoperative margin assessment in segmentectomy. However, with advancements in vision technology, the use of near-infrared mapping with indocyanine green (ICG) has become increasingly common. This study was conducted to compare the perioperative outcomes and resection margins achieved using these methods.
Methods:
This retrospective study included patients who underwent direct segmentectomy for clinical stage I lung cancer between January 2018 and September 2022. We compared perioperative factors, including bronchial and parenchymal resection margins, according to the margin assessment method and the type of segmentectomy performed.Since the ICG approach was adopted in April 2021, we also examined a recent subgroup of patients treated from then onward.
Results:
A total of 319 segmentectomies were performed. ID and ICG were utilized for 261 (81.8%) and 58 (18.2%) patients, respectively. Following April 2021, 61 patients (51.3%) were treated with ID, while 58 (48.7%) received ICG. We observed no significant difference in resection margins between ID and ICG for bronchial (2.7 cm vs. 2.3 cm, p=0.07) or parenchymal (2.5 cm vs. 2.3 cm, p=0.46) margins. Additionally, the length of hospitalization and the complication rate were comparable between groups. Analysis of the recent subgroup confirmed these findings, showing no significant differences in resection margins (bronchial: 2.6 cm vs. 2.3 cm, p=0.25; parenchymal: 2.4 cm vs. 2.3 cm, p=0.75), length of hospitalization, or complication rate.
Conclusion
The perioperative outcomes and resection margins achieved using ID and ICG were comparable, suggesting that both methods can safely guide segmentectomy procedures.

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