1.Identification of signature gene set as highly accurate determination of metabolic dysfunction-associated steatotic liver disease progression
Sumin OH ; Yang-Hyun BAEK ; Sungju JUNG ; Sumin YOON ; Byeonggeun KANG ; Su-hyang HAN ; Gaeul PARK ; Je Yeong KO ; Sang-Young HAN ; Jin-Sook JEONG ; Jin-Han CHO ; Young-Hoon ROH ; Sung-Wook LEE ; Gi-Bok CHOI ; Yong Sun LEE ; Won KIM ; Rho Hyun SEONG ; Jong Hoon PARK ; Yeon-Su LEE ; Kyung Hyun YOO
Clinical and Molecular Hepatology 2024;30(2):247-262
Background/Aims:
Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterized by fat accumulation in the liver. MASLD encompasses both steatosis and MASH. Since MASH can lead to cirrhosis and liver cancer, steatosis and MASH must be distinguished during patient treatment. Here, we investigate the genomes, epigenomes, and transcriptomes of MASLD patients to identify signature gene set for more accurate tracking of MASLD progression.
Methods:
Biopsy-tissue and blood samples from patients with 134 MASLD, comprising 60 steatosis and 74 MASH patients were performed omics analysis. SVM learning algorithm were used to calculate most predictive features. Linear regression was applied to find signature gene set that distinguish the stage of MASLD and to validate their application into independent cohort of MASLD.
Results:
After performing WGS, WES, WGBS, and total RNA-seq on 134 biopsy samples from confirmed MASLD patients, we provided 1,955 MASLD-associated features, out of 3,176 somatic variant callings, 58 DMRs, and 1,393 DEGs that track MASLD progression. Then, we used a SVM learning algorithm to analyze the data and select the most predictive features. Using linear regression, we identified a signature gene set capable of differentiating the various stages of MASLD and verified it in different independent cohorts of MASLD and a liver cancer cohort.
Conclusions
We identified a signature gene set (i.e., CAPG, HYAL3, WIPI1, TREM2, SPP1, and RNASE6) with strong potential as a panel of diagnostic genes of MASLD-associated disease.
2.Exploring the Efficacy and Safety of Intralesional Acyclovir for Treating Periungual and Palmoplantar Warts
Kyung Hyun MIN ; Eun Hee YOO ; Ha Yeh Rin KOO ; So Yeon YUN ; Jin Young CHOI ; Dong Soo YU ; Young Bok LEE
Korean Journal of Dermatology 2024;62(3):129-135
Background:
Warts are benign hyperkeratotic proliferative skin lesions caused by the human papillomavirus (HPV).Traditional destructive treatments, such as cryotherapy, have limited effectiveness and can lead to substantial adverse effects. Acyclovir, an antiviral agent against human herpes viruses, may be effective in the treatment of warts, as HPV is also a DNA virus.
Objective:
This study aimed to evaluate the efficacy of intralesional acyclovir for the treatment of warts.
Methods:
We conducted a retrospective study of 21 patients diagnosed with periungual or palmoplantar warts who were treated with intralesional acyclovir (25 mg/mL) injections between January 2022 and December 2022. The treatment was repeated at 3- to 4-week intervals, and the therapeutic effect was evaluated one month after the final treatment session.
Results:
Complete resolution of warts was observed in nine patients (42.9%), partial response in seven patients (33.3%), and no response in five patients (23.8%). Injection-related transient pain and hemorrhage were reported by all patients, with a hemorrhagic crust observed in one patient (4.76%) and transient onycholysis noted in another patient (4.76%). No permanent nail deformities have been reported.
Conclusion
Intralesional acyclovir is a potentially effective and safe treatment modality for periungual and palmoplantar warts.
3.Low-dose mitotane-induced neurological and endocrinological complication in a 5-year-old girl with adrenocortical carcinoma
You Joung HEO ; Jae Ho YOO ; Yun Soo CHOE ; Sang Hee PARK ; Seung Bok LEE ; Hyun A KIM ; Jung Yoon CHOI ; Young Ah LEE ; Byung Chan LIM ; Hee Won CHUEH
Annals of Pediatric Endocrinology & Metabolism 2022;27(3):236-241
Mitotane is an adrenolytic drug that exhibits therapeutic effects within a narrow target range (14–20 μg/dL). Various complications develop if the upper limit is exceeded. We present the case of a 5-year-old girl with breast development, acne, and pubic hair who was diagnosed with an adrenal mass that was subsequently excised. The pathological finding was adrenocortical carcinoma with a high risk of malignancy, and adjuvant therapy (combined mitotane and radiation therapy) was recommended. Mitotane was initiated at a low dose to allow monitoring of the therapeutic drug level, and high-dose hydrocortisone was also administered. However, the patient exhibited elevated adrenocorticotropic hormone levels and vague symptoms such as general weakness and difficulty concentrating. It was important to determine if these symptoms were signs of the neurological complications that develop when mitotane level is elevated. Encephalopathy progression and pubertal signs appeared 6 months after diagnosis, induced by high mitotane level. The mitotane decreased to subtherapeutic level several months after its discontinuation, at which time endocrinopathy (central hypothyroidism, hypercholesterolemia, and secondary central precocious puberty) developed. The case shows that low-dose mitotane can trigger neurological and endocrinological complications in a pediatric patient, indicating that the drug dose should be individualized with frequent monitoring of the therapeutic level.
4.Impairment of Quality of Life and Mental Health Status in Adult-Onset Atopic Dermatitis
Juhwan YOO ; Ha Yeh Rin KOO ; Kyungdo HAN ; Young Bok LEE
Annals of Dermatology 2022;34(4):278-286
Background:
Patients with atopic dermatitis (AD) have an impaired quality of life (QoL). To our knowledge, impairments in mental health status and health-related QoL (HRQoL) have not yet been evaluated in adult-onset and child-onset AD in a large-scale study.
Objective:
This study compared the mental health status and HRQoL (using the EuroQoL [EQ] five-dimensional [5D] questionnaire) in child-onset AD and adult-onset AD to those in normal controls.
Methods:
We used nationwide, population-based, cross-sectional data from the Korean National Health and Nutrition Examination Survey conducted from 2008 to 2013. We performed multiple logistic regression analyses with adjustments for age, sex, body mass index, income, education level, drinking status, current smoking, regular exercise, diabetes mellitus, hypertension, and dyslipidemia, and analyzed odds ratios (OR) for factors associated with impaired QoL.
Results:
The OR for strong psychological stress, depressed mood, and suicidal ideation were significantly increased in adult-onset AD patients compared to in normal controls.In addition, the OR (95% confidence interval [CI]) values for the EQ-5D questionnaire responses (for physical activity, self-control, daily activities, pain/discomfort, and anxiety/ depression) were significantly high in adult-onset AD compared to in normal controls after adjustments for covariates. However, patients with child-onset AD showed a significantly increased OR (95% CI) only for problems in pain/discomfort in the EQ-5D questionnaire.
Conclusion
Adult-onset AD patients suffer from impaired HRQoL and significant mental problems compared to normal controls. Dermatologists should focus not only on the clinical phenotype but also patients’ psychological health status to ensure a better treatment outcome.
5.Distribution of lymphocele following lymphadenectomy in patients with gynecological malignancies
Soo Youn SONG ; Mia PARK ; Byung Hun KANG ; Jung Bo YANG ; Young Bok KO ; Mina LEE ; Ki Hwan LEE ; Heon Jong YOO
Obstetrics & Gynecology Science 2020;63(6):700-708
Objective:
This study identified the distribution of lymphocele, as well as the factors associated with lymphocele formation, in patients undergoing pelvic and/or para-aortic lymph node dissection (PLND and/or PALND) for gynecologic malignancies.
Methods:
This study was retrospective, and data were collected from patients who underwent surgical procedures including lymphadenectomy due to gynecologic malignancies from March 2013 to May 2016. Lymphocele was defined by postoperative computer tomography within 2 weeks after surgery.
Results:
A total of 116 patients underwent lymphadenectomy, of whom, 47 (42.0%) developed lymphocele and 14 (12.1%) had symptomatic lymphocele formation. The affecting factors of lymphocele formation were PLND concomitant with PALND and a large amount of blood loss ≥600 mL (P=0.030 and P=0.006, respectively). All clinical factors were not significantly different between patients with symptomatic and asymptomatic lymphocele. Lymphocele developed more frequently in the left side (67.1%) of the body compared to the right side (48.7%), and in the pelvic area (75.9%) compared to the para-aortic area (24.1%, P<0.001, both).
Conclusion
Lymphocele formation is more prevalent in the left and pelvic area of the body compared to the right and paraaortic side. PLND concurrent with PALND and large amounts of blood loss were significant risk factors for lymphocele formation.
6.Distribution of lymphocele following lymphadenectomy in patients with gynecological malignancies
Soo Youn SONG ; Mia PARK ; Byung Hun KANG ; Jung Bo YANG ; Young Bok KO ; Mina LEE ; Ki Hwan LEE ; Heon Jong YOO
Obstetrics & Gynecology Science 2020;63(6):700-708
Objective:
This study identified the distribution of lymphocele, as well as the factors associated with lymphocele formation, in patients undergoing pelvic and/or para-aortic lymph node dissection (PLND and/or PALND) for gynecologic malignancies.
Methods:
This study was retrospective, and data were collected from patients who underwent surgical procedures including lymphadenectomy due to gynecologic malignancies from March 2013 to May 2016. Lymphocele was defined by postoperative computer tomography within 2 weeks after surgery.
Results:
A total of 116 patients underwent lymphadenectomy, of whom, 47 (42.0%) developed lymphocele and 14 (12.1%) had symptomatic lymphocele formation. The affecting factors of lymphocele formation were PLND concomitant with PALND and a large amount of blood loss ≥600 mL (P=0.030 and P=0.006, respectively). All clinical factors were not significantly different between patients with symptomatic and asymptomatic lymphocele. Lymphocele developed more frequently in the left side (67.1%) of the body compared to the right side (48.7%), and in the pelvic area (75.9%) compared to the para-aortic area (24.1%, P<0.001, both).
Conclusion
Lymphocele formation is more prevalent in the left and pelvic area of the body compared to the right and paraaortic side. PLND concurrent with PALND and large amounts of blood loss were significant risk factors for lymphocele formation.
7.Immunogenicity of a new, inactivated canine adenovirus type 2 vaccine for dogs
Dong Kun YANG ; Ha Hyun KIM ; Jae Young YOO ; Miryeon JI ; Bok Hee HAN ; Subin OH ; Bang Hun HYUN
Clinical and Experimental Vaccine Research 2020;9(1):40-47
0.05). Dogs inoculated with the former vaccine developed a significantly higher immune titer than non-vaccinated dogs.CONCLUSION: The Cabopol-adjuvanted, inactivated CAV-2 vaccine was safe and induced a high VNA titer in dogs.]]>
Adenoviruses, Canine
;
Amino Acids
;
Animals
;
Dogs
;
Enzyme-Linked Immunosorbent Assay
;
Formaldehyde
;
Guinea Pigs
;
Madin Darby Canine Kidney Cells
;
Urea
;
Vaccines
8.Intraoperative Frozen Cytology of Central Nervous System Neoplasms: An Ancillary Tool for Frozen Diagnosis
Myunghee KANG ; Dong Hae CHUNG ; Na Rae KIM ; Hyun Yee CHO ; Seung Yeon HA ; Sangho LEE ; Jungsuk AN ; Jae Yeon SEOK ; Gie Taek YIE ; Chan Jong YOO ; Sang Gu LEE ; Eun Young KIM ; Woo Kyung KIM ; Seong SON ; Sun Jin SYM ; Dong Bok SHIN ; Hee Young HWANG ; Eung Yeop KIM ; Kyu Chan LEE
Journal of Pathology and Translational Medicine 2019;53(2):104-111
BACKGROUND: Pathologic diagnosis of central nervous system (CNS) neoplasms is made by comparing light microscopic, immunohistochemical, and molecular cytogenetic findings with clinicoradiologic observations. Intraoperative frozen cytology smears can improve the diagnostic accuracy for CNS neoplasms. Here, we evaluate the diagnostic value of cytology in frozen diagnoses of CNS neoplasms. METHODS: Cases were selected from patients undergoing both frozen cytology and frozen sections. Diagnostic accuracy was evaluated. RESULTS: Four hundred and fifty-four cases were included in this retrospective single-center review study covering a span of 10 years. Five discrepant cases (1.1%) were found after excluding 53 deferred cases (31 cases of tentative diagnosis, 22 cases of inadequate frozen sampling). A total of 346 cases of complete concordance and 50 cases of partial concordance were classified as not discordant cases in the present study. Diagnostic accuracy of intraoperative frozen diagnosis was 87.2%, and the accuracy was 98.8% after excluding deferred cases. Discrepancies between frozen and permanent diagnoses (n = 5, 1.1%) were found in cases of nonrepresentative sampling (n = 2) and misinterpretation (n = 3). High concordance was observed more frequently in meningeal tumors (97/98, 99%), metastatic brain tumors (51/52, 98.1%), pituitary adenomas (86/89, 96.6%), schwannomas (45/47, 95.8%), high-grade astrocytic tumors (47/58, 81%), low grade astrocytic tumors (10/13, 76.9%), non-neoplastic lesions (23/36, 63.9%), in decreasing frequency. CONCLUSIONS: Using intraoperative cytology and frozen sections of CNS tumors is a highly accurate diagnostic ancillary method, providing subtyping of CNS neoplasms, especially in frequently encountered entities.
Brain Neoplasms
;
Central Nervous System Neoplasms
;
Central Nervous System
;
Cytogenetics
;
Diagnosis
;
Frozen Sections
;
Humans
;
Meningeal Neoplasms
;
Methods
;
Neurilemmoma
;
Pituitary Neoplasms
;
Retrospective Studies
9.Middle East respiratory syndrome clinical practice guideline for hemodialysis facilities.
Hayne Cho PARK ; Young Ki LEE ; Sang Ho LEE ; Kyung Don YOO ; Hee Jung JEON ; Dong Ryeol RYU ; Seong Nam KIM ; Seung Hwan SOHN ; Rho Won CHUN ; Kyu Bok CHOI
Kidney Research and Clinical Practice 2017;36(2):111-116
The Korean Society of Nephrology participated in the task force team consisting of government authorities and civilian experts to prevent and control the spread of Middle East respiratory syndrome (MERS) in 2015. The Korean Society of Nephrology MERS Task Force Team took an immediate action and drafted ‘the clinical recommendation for hemodialysis facilities’ to follow when the first and the only confirmed case was reported in the hemodialysis unit. Owing to the dedicated support from medical doctors, dialysis nurses, and related medical companies, we could prevent further transmission of MERS infection successfully in hemodialysis units. This special report describes the experience of infection control during MERS outbreak in 2015 and summarizes the contents of ‘the clinical practice guideline for hemodialysis facilities dealing with MERS patients’ built upon our previous experience.
Advisory Committees
;
Coronavirus Infections*
;
Dialysis
;
Infection Control
;
Middle East Respiratory Syndrome Coronavirus
;
Middle East*
;
Nephrology
;
Quarantine
;
Renal Dialysis*
10.Lower limb compartment syndrome by reperfusion injury after treatment of arterial thrombosis post-laparoscopic radical hysterectomy and pelvic lymph node dissection for cervical cancer.
Jihee YEON ; Ye Won JUNG ; Shin Seok YANG ; Byung Hun KANG ; Mina LEE ; Young Bok KO ; Jung Bo YANG ; Ki Hwan LEE ; Heon Jong YOO
Obstetrics & Gynecology Science 2017;60(2):223-226
Compartment syndrome is a clinical condition associated with decreased blood circulation that can lead to swelling of tissue in limited space. Several factors including lithotomy position, prolonged surgery, intermittent pneumatic compressor, and reperfusion after treatment of arterial thrombosis may contribute to compartment syndrome. However, compartment syndrome rarely occurs after gynecologic surgery. In this case, the patient was diagnosed as compartment syndrome due to reperfusion injury after treatment of arterial thrombosis, which occurred after laparoscopic radical hysterectomy and pelvic lymph node dissection for cervical cancer. Despite its rarity, prevention and identifying the risk factors of complication should be performed perioperatively; furthermore, gynecologist should be aware of the possibility of complications.
Blood Circulation
;
Compartment Syndromes*
;
Female
;
Gynecologic Surgical Procedures
;
Humans
;
Hysterectomy*
;
Lower Extremity*
;
Lymph Node Excision*
;
Lymph Nodes*
;
Reperfusion Injury*
;
Reperfusion*
;
Risk Factors
;
Thrombosis*
;
Uterine Cervical Neoplasms*

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