1.A Literature Review and Preliminary Study on Proteomic Research Associated With the Therapeutic Mechanism and Efficacy of Electroconvulsive Therapy in Schizophrenia Patients
Jiseon JANG ; Minah KIM ; Dohyun HAN ; Woncheol KIM ; Junsoo KWON
Korean Journal of Schizophrenia Research 2025;28(1):19-28
The mechanism of electroconvulsive therapy (ECT) in schizophrenia remains unclear, with limited research available. Previous studies have reported ECT-induced changes in protein markers, including neurotrophic factors, inflammatory markers, and signaling proteins, but findings have been inconsistent. This study reviews existing literature on protein changes associated with ECT and explores potential molecular mechanisms underlying its effects. Additionally, we present pilot findings from 34 patients with schizophrenia or schizoaffective disorder who underwent ECT at Seoul National University Hospital. Blood samples collected before and after ECT were analyzed via liquid chromatography-tandem mass spectrometry (LC-MS/MS) to identify differentially expressed proteins (DEPs), with Pearson’s correlation analysis examining their association with symptom changes. Talin 2 emerged as a potential biomarker linked to clinical improvement. However, given the small sample size, these findings require cautious interpretation. Further research is needed to clarify the molecular mechanisms underlying ECT’s therapeutic effects in schizophrenia.
2.A Literature Review and Preliminary Study on Proteomic Research Associated With the Therapeutic Mechanism and Efficacy of Electroconvulsive Therapy in Schizophrenia Patients
Jiseon JANG ; Minah KIM ; Dohyun HAN ; Woncheol KIM ; Junsoo KWON
Korean Journal of Schizophrenia Research 2025;28(1):19-28
The mechanism of electroconvulsive therapy (ECT) in schizophrenia remains unclear, with limited research available. Previous studies have reported ECT-induced changes in protein markers, including neurotrophic factors, inflammatory markers, and signaling proteins, but findings have been inconsistent. This study reviews existing literature on protein changes associated with ECT and explores potential molecular mechanisms underlying its effects. Additionally, we present pilot findings from 34 patients with schizophrenia or schizoaffective disorder who underwent ECT at Seoul National University Hospital. Blood samples collected before and after ECT were analyzed via liquid chromatography-tandem mass spectrometry (LC-MS/MS) to identify differentially expressed proteins (DEPs), with Pearson’s correlation analysis examining their association with symptom changes. Talin 2 emerged as a potential biomarker linked to clinical improvement. However, given the small sample size, these findings require cautious interpretation. Further research is needed to clarify the molecular mechanisms underlying ECT’s therapeutic effects in schizophrenia.
3.A Literature Review and Preliminary Study on Proteomic Research Associated With the Therapeutic Mechanism and Efficacy of Electroconvulsive Therapy in Schizophrenia Patients
Jiseon JANG ; Minah KIM ; Dohyun HAN ; Woncheol KIM ; Junsoo KWON
Korean Journal of Schizophrenia Research 2025;28(1):19-28
The mechanism of electroconvulsive therapy (ECT) in schizophrenia remains unclear, with limited research available. Previous studies have reported ECT-induced changes in protein markers, including neurotrophic factors, inflammatory markers, and signaling proteins, but findings have been inconsistent. This study reviews existing literature on protein changes associated with ECT and explores potential molecular mechanisms underlying its effects. Additionally, we present pilot findings from 34 patients with schizophrenia or schizoaffective disorder who underwent ECT at Seoul National University Hospital. Blood samples collected before and after ECT were analyzed via liquid chromatography-tandem mass spectrometry (LC-MS/MS) to identify differentially expressed proteins (DEPs), with Pearson’s correlation analysis examining their association with symptom changes. Talin 2 emerged as a potential biomarker linked to clinical improvement. However, given the small sample size, these findings require cautious interpretation. Further research is needed to clarify the molecular mechanisms underlying ECT’s therapeutic effects in schizophrenia.
4.A Literature Review and Preliminary Study on Proteomic Research Associated With the Therapeutic Mechanism and Efficacy of Electroconvulsive Therapy in Schizophrenia Patients
Jiseon JANG ; Minah KIM ; Dohyun HAN ; Woncheol KIM ; Junsoo KWON
Korean Journal of Schizophrenia Research 2025;28(1):19-28
The mechanism of electroconvulsive therapy (ECT) in schizophrenia remains unclear, with limited research available. Previous studies have reported ECT-induced changes in protein markers, including neurotrophic factors, inflammatory markers, and signaling proteins, but findings have been inconsistent. This study reviews existing literature on protein changes associated with ECT and explores potential molecular mechanisms underlying its effects. Additionally, we present pilot findings from 34 patients with schizophrenia or schizoaffective disorder who underwent ECT at Seoul National University Hospital. Blood samples collected before and after ECT were analyzed via liquid chromatography-tandem mass spectrometry (LC-MS/MS) to identify differentially expressed proteins (DEPs), with Pearson’s correlation analysis examining their association with symptom changes. Talin 2 emerged as a potential biomarker linked to clinical improvement. However, given the small sample size, these findings require cautious interpretation. Further research is needed to clarify the molecular mechanisms underlying ECT’s therapeutic effects in schizophrenia.
5.A Literature Review and Preliminary Study on Proteomic Research Associated With the Therapeutic Mechanism and Efficacy of Electroconvulsive Therapy in Schizophrenia Patients
Jiseon JANG ; Minah KIM ; Dohyun HAN ; Woncheol KIM ; Junsoo KWON
Korean Journal of Schizophrenia Research 2025;28(1):19-28
The mechanism of electroconvulsive therapy (ECT) in schizophrenia remains unclear, with limited research available. Previous studies have reported ECT-induced changes in protein markers, including neurotrophic factors, inflammatory markers, and signaling proteins, but findings have been inconsistent. This study reviews existing literature on protein changes associated with ECT and explores potential molecular mechanisms underlying its effects. Additionally, we present pilot findings from 34 patients with schizophrenia or schizoaffective disorder who underwent ECT at Seoul National University Hospital. Blood samples collected before and after ECT were analyzed via liquid chromatography-tandem mass spectrometry (LC-MS/MS) to identify differentially expressed proteins (DEPs), with Pearson’s correlation analysis examining their association with symptom changes. Talin 2 emerged as a potential biomarker linked to clinical improvement. However, given the small sample size, these findings require cautious interpretation. Further research is needed to clarify the molecular mechanisms underlying ECT’s therapeutic effects in schizophrenia.
6.Clinical validation of the 3-dimensional double-echo steady-state with water excitation sequence of MR neurography for preoperative facial and lingual nerve identification
Dohyun KWON ; Chena LEE ; YeonSu CHAE ; Ik Jae KWON ; Soung Min KIM ; Jong-Ho LEE
Imaging Science in Dentistry 2022;52(3):259-266
Purpose:
This study aimed to evaluate the clinical usefulness of magnetic resonance (MR) neurography using the 3-dimensional double-echo steady-state with water excitation (3D-DESS-WE) sequence for the preoperative delineation of the facial and lingual nerves.
Materials and Methods:
Patients underwent MR neurography for a tumor in the parotid gland area or lingual neuropathy from January 2020 to December 2021 were reviewed. Preoperative MR neurography using the 3D-DESS-WE sequence was evaluated. The visibility of the facial nerve and lingual nerve was scored on a 5-point scale, with poor visibility as 1 point and excellent as 5 points. The facial nerve course relative to the tumor wasidentified as superficial, deep, or encased. This was compared to the actual nerve course identified during surgery. The operative findings in lingual nerve surgery were also described.
Results:
Ten patients with parotid tumors and 3 patients with lingual neuropathy were included. Among 10 parotid tumor patients, 8 were diagnosed with benign tumors and 2 with malignant tumors. The median facial nerve visibility score was 4.5 points. The distribution of scores was as follows: 5 points in 5 cases, 4 points in 1 case, 3 points in 2 cases, and 2 points in 2 cases. The lingual nerve continuity score in the affected area was lower than in the unaffected area in all 3 patients. The average visibility score of the lingual nerve was 2.67 on the affected side and 4 on the unaffected side.
Conclusion
This study confirmed that the preoperative localization of the facial and lingual nerves using MR neurography with the 3D-DESS-WE sequence was feasible and contributed to surgical planning for the parotid area and lingual nerve.
7.Immediate implant placement for schizophrenic patient with outpatient general anesthesia.
Hojin NAM ; Ki Woong SUNG ; Min Gyun KIM ; Kyungjin LEE ; Dohyun KWON ; Seong In CHI ; Kwang Suk SEO
Journal of Dental Anesthesia and Pain Medicine 2015;15(3):147-151
The difficult oral healthcare in intellectually disabled patients with poor behavioral control has led to debate over the cost-effectiveness and validity of implant treatment in these patients. The patient in the present report had schizophrenia that had led to poor oral care and severe dental caries in the full mouth. Tooth extraction and a removable prosthesis were planned, but the guardian wanted an implant procedure. Since the guardian showed strong will and cooperation with regard to the patient's oral healthcare, extraction followed by immediate implant placement was performed across two rounds of general anesthesia. Since the outcome appears successful, we present this case report. Immediate implant placement after tooth extraction requires fewer surgeries and rounds of general anesthesia, reduces horizontal bone resorption, and can achieve better esthetic results. Therefore, as long as a certain degree of oral care is possible, this can be a positive option for restoration of a partially edentulous mouth, even in intellectually disabled patients.
Anesthesia, General*
;
Bone Resorption
;
Delivery of Health Care
;
Dental Caries
;
Humans
;
Mouth
;
Mouth, Edentulous
;
Outpatients*
;
Prostheses and Implants
;
Schizophrenia
;
Tooth Extraction
8.Immediate implant placement for schizophrenic patient with outpatient general anesthesia.
Hojin NAM ; Ki Woong SUNG ; Min Gyun KIM ; Kyungjin LEE ; Dohyun KWON ; Seong In CHI ; Kwang Suk SEO
Journal of Dental Anesthesia and Pain Medicine 2015;15(3):147-151
The difficult oral healthcare in intellectually disabled patients with poor behavioral control has led to debate over the cost-effectiveness and validity of implant treatment in these patients. The patient in the present report had schizophrenia that had led to poor oral care and severe dental caries in the full mouth. Tooth extraction and a removable prosthesis were planned, but the guardian wanted an implant procedure. Since the guardian showed strong will and cooperation with regard to the patient's oral healthcare, extraction followed by immediate implant placement was performed across two rounds of general anesthesia. Since the outcome appears successful, we present this case report. Immediate implant placement after tooth extraction requires fewer surgeries and rounds of general anesthesia, reduces horizontal bone resorption, and can achieve better esthetic results. Therefore, as long as a certain degree of oral care is possible, this can be a positive option for restoration of a partially edentulous mouth, even in intellectually disabled patients.
Anesthesia, General*
;
Bone Resorption
;
Delivery of Health Care
;
Dental Caries
;
Humans
;
Mouth
;
Mouth, Edentulous
;
Outpatients*
;
Prostheses and Implants
;
Schizophrenia
;
Tooth Extraction
9.A Nudix Hydrolase Protein, Ysa1, Regulates Oxidative Stress Response and Antifungal Drug Susceptibility in Cryptococcus neoformans.
Kyung Tae LEE ; Hyojeong KWON ; Dohyun LEE ; Yong Sun BAHN
Mycobiology 2014;42(1):52-58
A nucleoside diphosphate-linked moiety X (Nudix) hydrolase-like gene, YSA1, has been identified as one of the gromwell plant extract-responsive genes in Cryptococcus neoformans. Ysa1 is known to control intracellular concentrations of ADP-ribose or O-acetyl-ADP-ribose, and has diverse biological functions, including the response to oxidative stress in the ascomycete yeast, Saccharomyces cerevisiae. In this study, we characterized the role of YSA1 in the stress response and adaptation of the basidiomycete yeast, C. neoformans. We constructed three independent deletion mutants for YSA1, and analyzed their mutant phenotypes. We found that ysa1 mutants did not show increased sensitivity to reactive oxygen species-producing oxidative damage agents, such as hydrogen peroxide and menadione, but exhibited increased sensitivity to diamide, which is a thiol-specific oxidant. Ysa1 was dispensable for the response to most environmental stresses, such as genotoxic, osmotic, and endoplasmic reticulum stress. In conclusion, modulation of YSA1 may regulate the cellular response and adaptation of C. neoformans to certain oxidative stresses and contribute to the evolution of antifungal drug resistance.
Adenosine Diphosphate Ribose
;
Ascomycota
;
Basidiomycota
;
Cryptococcus neoformans*
;
Cryptococcus*
;
Diamide
;
Drug Resistance, Fungal
;
Endoplasmic Reticulum Stress
;
Hydrogen Peroxide
;
Lithospermum
;
O-Acetyl-ADP-Ribose
;
Oxidative Stress*
;
Oxygen
;
Phenotype
;
Plants
;
Saccharomyces cerevisiae
;
Vitamin K 3
;
Yeasts
10.An anesthetic management of head and neck cancer reconstructive surgery in a patient having hemophilia A: a case report
Seung-Hwa RYOO ; Dohyun KWON ; Jong-Ho LEE ; Kwang-Suk SEO ; Hyun Jeong KIM ; Myong-Hwan KARM
Journal of Dental Anesthesia and Pain Medicine 2021;21(3):261-268
Hemophilia A is a hemorrhagic disease caused by coagulation factor VIII deficiency. In head and neck cancer surgery, especially during a reconstructive one, complications can occur. These include hematomas due to bleeding which can then lead to flap ischemia, necrosis, and impaired wound healing. There are fewer cases of reconstructive surgery in patients with hemophilia A. Here in we report, a reconstructive surgery that involved mass resection, partial glossectomy (right), selective neck dissection (right, Levels I, II, III, IV), and reconstruction at the lateral arm free flap (left) in a 25-year-old man with hemophilia A. The surgery was successfully performed without any complications after pretreatment with Factor VIII concentrate, which has not been reported earlier.