1.The Multi-targeted Effect of Fascaplysin on the Proliferation and Dedifferentiation of Schwann Cells Inhibits Peripheral Nerve Degeneration by Blocking CDK4/6 and Androgen Receptor
Hyung-Joo CHUNG ; Ja-Eun KIM ; Youngbuhm HUH ; Jin San LEE ; So-Woon KIM ; Kiyong NA ; Jiwon KIM ; Seung Hyeun LEE ; Hiroyuki KONISHI ; Seung Geun YEO ; Dong Keon YON ; Dokyoung KIM ; Junyang JUNG ; Na Young JEONG
Experimental Neurobiology 2024;33(6):266-281
Peripheral neurodegenerative diseases induced by irreversible peripheral nerve degeneration (PND), such as diabetic peripheral neuropathy, have a high prevalence worldwide and reduce the quality of life. However, there is no agent effective against the irreversible PND. After peripheral nerve injury, Schwann cells play an important role in regulating PND. However, because PND involves multiple biochemical events in Schwann cells, a one-drug-single-target therapeutic strategy is not feasible for PND. Here, we suggested that fascaplysin (Fas), a compound with multiple targets (CDK4/6), could overcome these problems. Fas exerted a significant inhibitory effect on axonal degradation, demyelination, and Schwann cell proliferation and dedifferentiation during in vitro and ex vivo PND. To discover the most likely novel target for PND, a chemo-bioinformatics analysis predicted the other on-targets of Fas and identified androgen receptor (AR) which were involved in Schwann cell differentiation and proliferation.AR interacted with Fas, and nuclear import of the AR/Fas complex was inhibited in Schwann cells, altering the expression patterns of transcription factors during PND. Therefore, Fas may have therapeutic potential for irreversible peripheral neurodegenerative diseases.
2.The Multi-targeted Effect of Fascaplysin on the Proliferation and Dedifferentiation of Schwann Cells Inhibits Peripheral Nerve Degeneration by Blocking CDK4/6 and Androgen Receptor
Hyung-Joo CHUNG ; Ja-Eun KIM ; Youngbuhm HUH ; Jin San LEE ; So-Woon KIM ; Kiyong NA ; Jiwon KIM ; Seung Hyeun LEE ; Hiroyuki KONISHI ; Seung Geun YEO ; Dong Keon YON ; Dokyoung KIM ; Junyang JUNG ; Na Young JEONG
Experimental Neurobiology 2024;33(6):266-281
Peripheral neurodegenerative diseases induced by irreversible peripheral nerve degeneration (PND), such as diabetic peripheral neuropathy, have a high prevalence worldwide and reduce the quality of life. However, there is no agent effective against the irreversible PND. After peripheral nerve injury, Schwann cells play an important role in regulating PND. However, because PND involves multiple biochemical events in Schwann cells, a one-drug-single-target therapeutic strategy is not feasible for PND. Here, we suggested that fascaplysin (Fas), a compound with multiple targets (CDK4/6), could overcome these problems. Fas exerted a significant inhibitory effect on axonal degradation, demyelination, and Schwann cell proliferation and dedifferentiation during in vitro and ex vivo PND. To discover the most likely novel target for PND, a chemo-bioinformatics analysis predicted the other on-targets of Fas and identified androgen receptor (AR) which were involved in Schwann cell differentiation and proliferation.AR interacted with Fas, and nuclear import of the AR/Fas complex was inhibited in Schwann cells, altering the expression patterns of transcription factors during PND. Therefore, Fas may have therapeutic potential for irreversible peripheral neurodegenerative diseases.
3.The Multi-targeted Effect of Fascaplysin on the Proliferation and Dedifferentiation of Schwann Cells Inhibits Peripheral Nerve Degeneration by Blocking CDK4/6 and Androgen Receptor
Hyung-Joo CHUNG ; Ja-Eun KIM ; Youngbuhm HUH ; Jin San LEE ; So-Woon KIM ; Kiyong NA ; Jiwon KIM ; Seung Hyeun LEE ; Hiroyuki KONISHI ; Seung Geun YEO ; Dong Keon YON ; Dokyoung KIM ; Junyang JUNG ; Na Young JEONG
Experimental Neurobiology 2024;33(6):266-281
Peripheral neurodegenerative diseases induced by irreversible peripheral nerve degeneration (PND), such as diabetic peripheral neuropathy, have a high prevalence worldwide and reduce the quality of life. However, there is no agent effective against the irreversible PND. After peripheral nerve injury, Schwann cells play an important role in regulating PND. However, because PND involves multiple biochemical events in Schwann cells, a one-drug-single-target therapeutic strategy is not feasible for PND. Here, we suggested that fascaplysin (Fas), a compound with multiple targets (CDK4/6), could overcome these problems. Fas exerted a significant inhibitory effect on axonal degradation, demyelination, and Schwann cell proliferation and dedifferentiation during in vitro and ex vivo PND. To discover the most likely novel target for PND, a chemo-bioinformatics analysis predicted the other on-targets of Fas and identified androgen receptor (AR) which were involved in Schwann cell differentiation and proliferation.AR interacted with Fas, and nuclear import of the AR/Fas complex was inhibited in Schwann cells, altering the expression patterns of transcription factors during PND. Therefore, Fas may have therapeutic potential for irreversible peripheral neurodegenerative diseases.
4.The Multi-targeted Effect of Fascaplysin on the Proliferation and Dedifferentiation of Schwann Cells Inhibits Peripheral Nerve Degeneration by Blocking CDK4/6 and Androgen Receptor
Hyung-Joo CHUNG ; Ja-Eun KIM ; Youngbuhm HUH ; Jin San LEE ; So-Woon KIM ; Kiyong NA ; Jiwon KIM ; Seung Hyeun LEE ; Hiroyuki KONISHI ; Seung Geun YEO ; Dong Keon YON ; Dokyoung KIM ; Junyang JUNG ; Na Young JEONG
Experimental Neurobiology 2024;33(6):266-281
Peripheral neurodegenerative diseases induced by irreversible peripheral nerve degeneration (PND), such as diabetic peripheral neuropathy, have a high prevalence worldwide and reduce the quality of life. However, there is no agent effective against the irreversible PND. After peripheral nerve injury, Schwann cells play an important role in regulating PND. However, because PND involves multiple biochemical events in Schwann cells, a one-drug-single-target therapeutic strategy is not feasible for PND. Here, we suggested that fascaplysin (Fas), a compound with multiple targets (CDK4/6), could overcome these problems. Fas exerted a significant inhibitory effect on axonal degradation, demyelination, and Schwann cell proliferation and dedifferentiation during in vitro and ex vivo PND. To discover the most likely novel target for PND, a chemo-bioinformatics analysis predicted the other on-targets of Fas and identified androgen receptor (AR) which were involved in Schwann cell differentiation and proliferation.AR interacted with Fas, and nuclear import of the AR/Fas complex was inhibited in Schwann cells, altering the expression patterns of transcription factors during PND. Therefore, Fas may have therapeutic potential for irreversible peripheral neurodegenerative diseases.
5.Appropriateness of rabies post-exposure prophylaxis in pediatric patients visiting the emergency department due to animal bite
Jhe Jun YOO ; Jung In KO ; Woon Hyung YEO ; Tae Jin PARK ; Sung Koo JUNG ; Jae Hyun KWON
Pediatric Emergency Medicine Journal 2020;7(1):23-27
Purpose:
To study the appropriateness of rabies post-exposure prophylaxis (rPEP) for children with animal bite who visited the emergency department (ED).
Methods:
The study enrolled children younger than 18 years with animal bite who visited the National Medical Center ED between January 2014 and October 2017. The children’ electronic medical records were retrospectively reviewed. Data for analysis included age, sex, body parts bitten by animals, species of animals, regions where animal bites occurred, history of recent antibiotics therapy and tetanus vaccination, and justification by the 2017 Guidelines for Rabies Control in Korea and implementation of rPEP. In children who underwent unjustified rPEP or did not undergo justified one, we recorded their guardians’ opinion for or against rPEP.
Results:
Of the 63 enrolled children, rPEP was justified for 38 children by the Korean guidelines. Of the 38 children, 35 actually underwent rPEP. Among the remaining 3 children, 2 did not undergo the prophylaxis as per the guardians’ requests. Among the 25 children whose rPEP was not justified, 8 underwent the prophylaxis. Of these 8 children, 7 did based on the guardians’ requests.
Conclusion
In this study, inappropriate rPEP was usually affected by the guardians’ requests, regardless of the criteria for such prophylaxis. Thus, their requests for or against rPEP should be discussed with emergency physicians who are aware of the relevant criteria to prevent occurrence of rabies or unnecessary use of medical resources.
6.Is Atropine Necessary for Cardiopulmonary Resuscitation?.
Hyun Wook LEE ; Deuk Hyun PARK ; Yoo Sang YOON ; Yang Weon KIM ; Junyeob LEE ; Kyung Hye PARK ; In Ho KWON ; Woon Hyung YEO ; Ha Young PARK ; Junho CHO
Journal of the Korean Society of Emergency Medicine 2014;25(5):542-549
PURPOSE: According to the 2010 guidelines for cardiopulmonary resuscitation (CPR) of the American Heart association, administration of atropine for non-shockable rhythm is no longer recommended, however, there are insufficient data in humans. This study was conducted to evaluate the results of CPR, whether the combined administration of atropine and epinephrine (Atropine combined group, AG) compared with epinephrine only injection (epinephrine only group, EG) for patients with non-shockable rhythm. METHODS: A total of 449 patients who underwent CPR in the emergency department from 2009 to 2012 were included. Retrospective analysis was performed according to atropine administration during CPR. We investigated Return of Spontaneous Circulation (ROSC), sustained ROSC, 30-day survival, and 30-day neurological outcome using Utstein templates. RESULTS: There were 178 (48.9%) patients in the AG. There were no significant differences in the baseline characteristics. The two groups had similar rates of ROSC, sustained ROSC, and 30-day survival. However, AG had a significantly poor neurological outcome compared to EG, with an adjusted odds ratio of 0.074 (95% CI 0.012-0.452, p=0.005). CONCLUSION: The combination therapy of atropine and epinephrine during CPR showed poor neurological outcome compared with epinephrine alone. Atropine is not useful for adults with non-shockable rhythm in terms of 30-day neurological outcome.
Adult
;
American Heart Association
;
Atropine*
;
Cardiopulmonary Resuscitation*
;
Emergency Service, Hospital
;
Epinephrine
;
Heart Arrest
;
Humans
;
Odds Ratio
;
Retrospective Studies
7.Characteristics of Geriatric Trauma Patients Transferred from Long-term Care Hospitals: A Propensity Score Matched Analysis.
Min Woo PARK ; Kyung Hye PARK ; Junho CHO ; Ha Young PARK ; In Ho KWON ; Woon Hyung YEO ; Junyeob LEE ; Deuk Hyun PARK ; Yoo Sang YOON ; Yang Weon KIM
Journal of the Korean Society of Emergency Medicine 2014;25(3):312-317
PURPOSE: Transfer from long-term care (LTC) hospitals to the emergency department (ED) of larger hospitals has increased due to limited capability for management of patients needing special diagnostic tools or emergency treatment in the LTC hospital. We investigated the characteristics of geriatric trauma patients transferred from LTC hospitals to the ED. METHODS: A retrospective analysis included data on geriatric trauma patients (age> or =65) who visited two EDs in Korea. All data of patients transferred from the LTC hospital were compared with those of patients who visited the ED from home. Patients visiting from home were selected according to age, sex, and main diagnosis, using the statistical matching method. RESULTS: A total of 44 patients were transferred, and 132 patients were selected after matching. No differences in mechanism of injury, injury severity score (ISS), outcomes, transfusion, length of hospital stay, or mortality were observed between the two groups. The odds ratios (OR) of transferred patients for stroke and dementia were 5.027 (95% confidence interval (CI) 1.292-16.915) and 13.941 (95% CI: 5.112-38.015), respectively. In addition, the OR of transferred patients for dependent activities of daily living was 8.165 (95% CI: 2.886-23.104). Thirty five transferred patients (79.5%) had been injured in the LTC hospital (p<0.001). CONCLUSION: The transferred patients had more stroke, dementia, and dependent activities, but showed no significant difference in severity or prognosis. Most transferred patients had been injured in the hospital. Greater attention to hospitalized patients and system development are required in order to prevent injuries in the LTC hospital.
Activities of Daily Living
;
Dementia
;
Diagnosis
;
Emergency Service, Hospital
;
Emergency Treatment
;
Geriatrics
;
Humans
;
Injury Severity Score
;
Korea
;
Length of Stay
;
Long-Term Care*
;
Mortality
;
Odds Ratio
;
Prognosis
;
Propensity Score*
;
Retrospective Studies
;
Stroke
8.Clinical Significance of National Patients Sample Analysis: Factors Affecting Mortality and Length of Stay of Organophosphate and Carbamate Poisoned Patients.
Kyoung Ho KIM ; In Ho KWON ; Jun Yeob LEE ; Woon Hyung YEO ; Ha Young PARK ; Kyung Hye PARK ; Junho CHO ; Hyunjong KIM ; Gun Bea KIM ; Deuk Hyun PARK ; Yoo Sang YOON ; Yang Weon KIM
Healthcare Informatics Research 2013;19(4):278-285
OBJECTIVES: This study considered whether there could be a change of mortality and length of stay as a result of inter-hospital transfer, clinical department, and size of hospital for patients with organophosphates and carbamates poisoning via National Patients Sample data of the year 2009, which was obtained from Health Insurance Review and Assessment Services (HIRA). The utility and representativeness of the HIRA data as the source of prognosis analysis in poisoned patients were also evaluated. METHODS: Organophosphate and carbamate poisoned patients' mortality and length of stay were analyzed in relation to the initial and final treating hospitals and departments, as well as the presence of inter-hospital transfers. RESULTS: Among a total of 146 cases, there were 17 mortality cases, and the mean age was 56.8 +/- 19.2 years. The median length of stay was 6 days. There was no inter-hospital or inter-departmental difference in length of stay. However, it significantly increased when inter-hospital transfer occurred (transferred 11 days vs. non-transferred 6 days; p = 0.037). Overall mortality rate was 11.6%. The mortality rate significantly increased when inter-hospital transfer occurred (transferred 23.5% vs. non-transferred 7.0%; p = 0.047), but there was no statistical difference in mortality on inter-hospital and inter-department comparison at the initial treating facility. However, at the final treating facility, there was a significant difference between tertiary and general hospitals (5.1% for tertiary hospitals and 17.3% for general hospitals; p = 0.024), although there was no significant inter-departmental difference. CONCLUSIONS: We demonstrated that hospital, clinical department, length of stay, and mortality could be analyzed using insurance claim data of a specific disease group. Our results also indicated that length of stay and mortality according to inter-hospital transfer could be analyzed, which was previously unknown.
Admitting Department, Hospital
;
Carbamates
;
Hospitals, General
;
Humans
;
Insecticides
;
Insurance
;
Insurance, Health
;
Length of Stay*
;
Mortality*
;
Organophosphates
;
Pesticides
;
Poisoning
;
Prognosis
;
Tertiary Care Centers
9.Criminal Responsibility in Emergency Care.
Chul Ho PARK ; Yang Weon KIM ; Deuk Hyun PARK ; Junho CHO ; Kyung Hye PARK ; In Ho KWON ; Ha Young PARK ; Woon Hyung YEO ; Yoo Sang YOON
Journal of the Korean Society of Emergency Medicine 2013;24(5):473-483
PURPOSE: When a criminal act occurs during emergency care, it becomes fatal to both the patient and doctor. Criminal acts during emergency care and judged by the Supreme Court of Korea were analyzed and investigated to decrease and prevent medical malpractice. METHODS: After assessing the Medical Act in Korea and Act on Emergency Care in Korea, a pattern of emergency care was categorized and applicable provisions were analyzed. Emergency medical malpractice cases were collected from previous reports and an internet site managed by the Supreme Court of Korea (http://glaw.scourt.go.kr). RESULTS: The patterns of emergency care can be categorized into "general emergency care", "interhospital patient transfer", and the "request for medical treatment sent to another department or hospital". Furthermore, inerthospiatl patient transfer can be categorized into "after request for emergency care" and "after medical treatment." There were ten medical malpractice cases in emergency care in which criminal responsibility occurred. There were six cases related to general emergency care and four related to interhospital patient transfer. CONCLUSION: Though the emergency care cases in which criminal responsibility occurred were few, the results critically impacted the patient and doctor. Therefore, emergency physicians must do their best to decrease and prevent medical negligence. In addition, a nation has a primary responsibility to save lives and must support emergency care.
Criminals*
;
Emergencies*
;
Emergency Medical Services*
;
Humans
;
Internet
;
Korea
;
Malpractice
;
Patient Transfer
10.Criminal Responsibility in Emergency Care.
Chul Ho PARK ; Yang Weon KIM ; Deuk Hyun PARK ; Junho CHO ; Kyung Hye PARK ; In Ho KWON ; Ha Young PARK ; Woon Hyung YEO ; Yoo Sang YOON
Journal of the Korean Society of Emergency Medicine 2013;24(5):473-483
PURPOSE: When a criminal act occurs during emergency care, it becomes fatal to both the patient and doctor. Criminal acts during emergency care and judged by the Supreme Court of Korea were analyzed and investigated to decrease and prevent medical malpractice. METHODS: After assessing the Medical Act in Korea and Act on Emergency Care in Korea, a pattern of emergency care was categorized and applicable provisions were analyzed. Emergency medical malpractice cases were collected from previous reports and an internet site managed by the Supreme Court of Korea (http://glaw.scourt.go.kr). RESULTS: The patterns of emergency care can be categorized into "general emergency care", "interhospital patient transfer", and the "request for medical treatment sent to another department or hospital". Furthermore, inerthospiatl patient transfer can be categorized into "after request for emergency care" and "after medical treatment." There were ten medical malpractice cases in emergency care in which criminal responsibility occurred. There were six cases related to general emergency care and four related to interhospital patient transfer. CONCLUSION: Though the emergency care cases in which criminal responsibility occurred were few, the results critically impacted the patient and doctor. Therefore, emergency physicians must do their best to decrease and prevent medical negligence. In addition, a nation has a primary responsibility to save lives and must support emergency care.
Criminals*
;
Emergencies*
;
Emergency Medical Services*
;
Humans
;
Internet
;
Korea
;
Malpractice
;
Patient Transfer

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