1.Tuberculosis Verrucosa Cutis Confirmed by Culture.
Korean Journal of Dermatology 2017;55(1):60-64
Tuberculosis verrucosa cutis is a warty form of cutaneous tuberculosis. It is a paucibacillary disorder caused by external reinfection of mycobacteria into the skin of previously sensitized individuals with moderate to strong cell-mediated immunity. Inoculation arises at sites of minor wounds, or rarely from the patient's sputum. Tuberculosis verrucosa cutis begins as a small papule and grows slowly by peripheral expansion, sometimes reaching a size of several centimeters or more in diameter. For definitive diagnosis of cutaneous tuberculosis, the demonstration of Mycobacterium tuberculosis is essential. However, the laboratory diagnosis of paucibacillary cutaneous tuberculosis is very difficult owing to the poor sensitivity of routine available methods. Herein, we report two cases of tuberculosis verrucosa cutis definitively confirmed by mycobacterial culture in Korean patients who had received bacille Calmette-Guerin vaccination earlier in life.
Clinical Laboratory Techniques
;
Diagnosis
;
Humans
;
Immunity, Cellular
;
Mycobacterium tuberculosis
;
Skin
;
Sputum
;
Tuberculosis*
;
Tuberculosis, Cutaneous
;
Vaccination
;
Wounds and Injuries
2.Four Cases of Severe Fever with Thrombocytopenia Syndrome Occurring in Jeju.
Sang Taek HEO ; Minseok CHEON ; Jae Wang KIM
Korean Journal of Dermatology 2014;52(3):173-177
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by a novel SFTS bunyavirus (SFTSV), a member of the genus Phlebovirus in the family Bunyaviridae. SFTSV is believed to be transmitted by Haemaphysalis longicornis. Common symptoms of SFTS include high fever, vomiting, diarrhea, thrombocytopenia, leukocytopenia, and multi-organ failure with an average case-fatality rate of 12~30%. In 2009, SFTS was firstly reported in China. In 2013, 27 cases of SFTS were documented in Korea, and 6 cases were confirmed on Jeju Island. Although the pathogenesis and transmission mode of SFTS remain unclear, SFTS is now considered endemic in East Asia. Accordingly, SFTS needs to be differentiated from scrub typhus, leptospirosis, and hemorrhagic fever with renal syndrome. We here report 4 cases of SFTS preceded by a tick bite, which were in need of a differential diagnosis of scrub typhus.
Bunyaviridae
;
China
;
Communicable Diseases, Emerging
;
Diagnosis, Differential
;
Diarrhea
;
Far East
;
Fever*
;
Hemorrhagic Fever with Renal Syndrome
;
Humans
;
Korea
;
Leptospirosis
;
Leukopenia
;
Phlebovirus
;
Scrub Typhus
;
Thrombocytopenia*
;
Tick Bites
;
Vomiting
3.Regulation of gonadotropin releasing hormone receptor mRNA expression in cultured rat granulosa cells.
Yongbin PARK ; Kyungyoon KAM ; Minseok CHEON ; Kyungza RYU
Yonsei Medical Journal 2001;42(2):233-241
The homologous regulation of pituitary Gonadotropin Releasing Hormone Receptor (GnRH-R) mRNA expression by GnRH has been well demonstrated. However, the regulation of the ovarian GnRH-R is poorly understood. The present study was performed to demonstrate the presence of GnRH transcripts in addition to GnRH-R mRNA and the regulation of GnRH-R mRNA expression in the granulosa cells isolated from small antral follicles. The GnRH and GnRH-R mRNA levels were determined by a competitive reverse transcription-polymerase chain reaction (RT-PCR). The granulosa cells were obtained from immature rats implanted with diethylstilbestrol for 3 days. When GnRH transcript expression was examined in isolated granulosa cells by RT-PCR, the PCR products showed two bands. The larger band contained intronic sequences and the smaller band was a fully processed GnRH gene transcript identical to hypothalamic GnRH. This suggests that authentic GnRH gene transcripts are expressed in ovarian granulosa cells and may act on the granulosa cells in a paracrine or autocrine manner. Since GnRH action in the granulosa cells is mediated by specific GnRH-R, it is of interest to examine whether GnRH-R is synthesized in the granulosa cells. When the granulosa cells were cultured in media only, GnRH-R mRNA levels increased abruptly within 3 h and gradually decreased thereafter during the 24 h culture period. However, GnRH itself did not alter the GnRH-R mRNA expression levels in cultured granulosa cells. Interestingly, treatment with FSH decreased the GnRH-R mRNA levels in a dose-dependent manner. A time-course analysis revealed that the GnRH-R mRNA levels were significantly lower up to 9 h after FSH treatment, and returned to the basal level between 12 h-24 h. Activation of adenylate cyclase with forskolin also decreased the GnRH-R mRNA levels. It is therefore concluded that in the granulosa cells of the small antral follicles GnRH-R mRNA expression was not homologously regulated by GnRH, while FSH may negatively regulate GnRH-R mRNA expression in the granulosa cells possibly through a cAMP-protein kinase A pathway.
Animal
;
Cells, Cultured
;
FSH/pharmacology
;
Female
;
Gene Expression Regulation*
;
Gonadorelin/pharmacology
;
Granulosa Cells/metabolism*
;
Granulosa Cells/drug effects
;
RNA, Messenger/metabolism*
;
Rats
;
Rats, Sprague-Dawley
;
Receptors, LHRH/genetics*
;
Reverse Transcriptase Polymerase Chain Reaction
4.Current Status of PSMA‑Targeted Radioligand Therapy in the Era of Radiopharmaceutical Therapy Acquiring Marketing Authorization
So Won OH ; Minseok SUH ; Gi Jeong CHEON
Nuclear Medicine and Molecular Imaging 2022;56(6):263-281
Prostate-specific membrane antigen (PSMA) is highly expressed in PCa, which gradually increases in high-grade tumors, metastatic tumors, and tumors nonresponsive to androgen deprivation therapy. PSMA has been a topic of interest during the past decade for both diagnostic and therapeutic targets. Radioligand therapy (RLT) utilizes the delivery of radioactive nuclides to tumors and tumor-associated targets, and it has shown better efficacy with minimal toxicity compared to other systemic cancer therapies. Nuclear medicine has faced a new turning point claiming theranosis as the core of academic identity, since new RLTs have been introduced to clinics through the official new drug development processes for approval from the Food and Drug Administration (FDA) or European Medical Agency. Recently, PSMA targeting RLT was approved by the US FDA in March 2022. This review introduces PSMA RLT focusing on ongoing clinical trials to enhance our understanding of nuclear medicine theranosis and strive for the development of new radiopharmaceuticals.
5.Multidisciplinary Team Approach in Prostate-Specific Membrane Antigen Theranostics for Prostate Cancer: A Narrative Review
Journal of Urologic Oncology 2024;22(1):11-20
In managing prostate cancer, the integration of multidisciplinary team (MDT) with prostate-specific membrane antigen (PSMA) theranostics marks a significant advancement, addressing the disease's spectrum from indolent forms to aggressive metastatic stages. MDTs, comprising urology, oncology, radiation oncology, pathology, radiology, and nuclear medicine experts, are pivotal in delivering tailored, evidence-based care, essential for the varied clinical presentations of prostate cancer. The introduction of PSMA-targeted theranostics and PSMA positron emission tomography imaging has impacted the approach to diagnosis and treatment, offering enhanced precision in disease localization and enabling more nuanced management strategies for conditions such as oligometastatic prostate cancer, metastatic hormone-sensitive prostate cancer, and metastatic castration-resistant prostate cancer. The collaborative approach of MDTs in utilizing PSMA-targeted radioligand therapy emphasizes meticulous patient selection, predictive assessment of therapy response, and careful management of therapy-related toxicities. Additionally, recent strategies, including combination therapies from ENZA-P and Lu-PARP trials, show potential for improving treatment efficacy. This unified approach showcases the critical role of MDTs in optimizing treatment outcomes, underscoring the importance of collaboration in advancing the treatment of prostate cancer with PSMAtargeted therapies, thereby setting a new paradigm in personalized prostate cancer management.
6.Multidisciplinary Team Approach in Prostate-Specific Membrane Antigen Theranostics for Prostate Cancer: A Narrative Review
Journal of Urologic Oncology 2024;22(1):11-20
In managing prostate cancer, the integration of multidisciplinary team (MDT) with prostate-specific membrane antigen (PSMA) theranostics marks a significant advancement, addressing the disease's spectrum from indolent forms to aggressive metastatic stages. MDTs, comprising urology, oncology, radiation oncology, pathology, radiology, and nuclear medicine experts, are pivotal in delivering tailored, evidence-based care, essential for the varied clinical presentations of prostate cancer. The introduction of PSMA-targeted theranostics and PSMA positron emission tomography imaging has impacted the approach to diagnosis and treatment, offering enhanced precision in disease localization and enabling more nuanced management strategies for conditions such as oligometastatic prostate cancer, metastatic hormone-sensitive prostate cancer, and metastatic castration-resistant prostate cancer. The collaborative approach of MDTs in utilizing PSMA-targeted radioligand therapy emphasizes meticulous patient selection, predictive assessment of therapy response, and careful management of therapy-related toxicities. Additionally, recent strategies, including combination therapies from ENZA-P and Lu-PARP trials, show potential for improving treatment efficacy. This unified approach showcases the critical role of MDTs in optimizing treatment outcomes, underscoring the importance of collaboration in advancing the treatment of prostate cancer with PSMAtargeted therapies, thereby setting a new paradigm in personalized prostate cancer management.
7.Multidisciplinary Team Approach in Prostate-Specific Membrane Antigen Theranostics for Prostate Cancer: A Narrative Review
Journal of Urologic Oncology 2024;22(1):11-20
In managing prostate cancer, the integration of multidisciplinary team (MDT) with prostate-specific membrane antigen (PSMA) theranostics marks a significant advancement, addressing the disease's spectrum from indolent forms to aggressive metastatic stages. MDTs, comprising urology, oncology, radiation oncology, pathology, radiology, and nuclear medicine experts, are pivotal in delivering tailored, evidence-based care, essential for the varied clinical presentations of prostate cancer. The introduction of PSMA-targeted theranostics and PSMA positron emission tomography imaging has impacted the approach to diagnosis and treatment, offering enhanced precision in disease localization and enabling more nuanced management strategies for conditions such as oligometastatic prostate cancer, metastatic hormone-sensitive prostate cancer, and metastatic castration-resistant prostate cancer. The collaborative approach of MDTs in utilizing PSMA-targeted radioligand therapy emphasizes meticulous patient selection, predictive assessment of therapy response, and careful management of therapy-related toxicities. Additionally, recent strategies, including combination therapies from ENZA-P and Lu-PARP trials, show potential for improving treatment efficacy. This unified approach showcases the critical role of MDTs in optimizing treatment outcomes, underscoring the importance of collaboration in advancing the treatment of prostate cancer with PSMAtargeted therapies, thereby setting a new paradigm in personalized prostate cancer management.
8.Multidisciplinary Team Approach in Prostate-Specific Membrane Antigen Theranostics for Prostate Cancer: A Narrative Review
Journal of Urologic Oncology 2024;22(1):11-20
In managing prostate cancer, the integration of multidisciplinary team (MDT) with prostate-specific membrane antigen (PSMA) theranostics marks a significant advancement, addressing the disease's spectrum from indolent forms to aggressive metastatic stages. MDTs, comprising urology, oncology, radiation oncology, pathology, radiology, and nuclear medicine experts, are pivotal in delivering tailored, evidence-based care, essential for the varied clinical presentations of prostate cancer. The introduction of PSMA-targeted theranostics and PSMA positron emission tomography imaging has impacted the approach to diagnosis and treatment, offering enhanced precision in disease localization and enabling more nuanced management strategies for conditions such as oligometastatic prostate cancer, metastatic hormone-sensitive prostate cancer, and metastatic castration-resistant prostate cancer. The collaborative approach of MDTs in utilizing PSMA-targeted radioligand therapy emphasizes meticulous patient selection, predictive assessment of therapy response, and careful management of therapy-related toxicities. Additionally, recent strategies, including combination therapies from ENZA-P and Lu-PARP trials, show potential for improving treatment efficacy. This unified approach showcases the critical role of MDTs in optimizing treatment outcomes, underscoring the importance of collaboration in advancing the treatment of prostate cancer with PSMAtargeted therapies, thereby setting a new paradigm in personalized prostate cancer management.
9.Overlap Syndrome with Features of Actue and Chronic Cutaneous Graft-versus-host Disease.
Minseok CHEON ; Young Bok LEE ; Jung Eun KIM ; Baik Kee CHO ; Hyun Jeong PARK
Korean Journal of Dermatology 2011;49(2):198-201
Graft-versus-host disease (GVHD) has been divided into acute GVHD and chronic GVHD on the basis of 100 days post-transplantation. Recently, the National Institutes of Health in the USA proposed new consensus criteria for chronic GVHD; 1) classic chronic GVHD, presenting with diagnostic features of only chronic GVHD without characteristics of acute GVHD and 2) an overlap syndrome in which there are distinctive manifestations of chronic GVHD together with features of acute GVHD, irrespective of the period after transplantation. Herein we report a case of overlap syndrome that developed in a 15 year-old male who had undergone unrelated peripheral blood stem cell transplantation 4 years earlier.
Consensus
;
Graft vs Host Disease
;
Humans
;
Male
;
National Institutes of Health (U.S.)
;
Peripheral Blood Stem Cell Transplantation
;
Stem Cell Transplantation
;
Transplants
10.Toxic Epidermal Necrolysis in a Patient with HLA-B*5901 Haplotype Caused by Topical and Oral Carbonic Anhydrase Inhibitors.
Minseok CHEON ; Young Bok LEE ; Dong Soo YU ; Jin Wou KIM
Annals of Dermatology 2014;26(5):645-646
No abstract available.
Carbonic Anhydrase Inhibitors*
;
Haplotypes*
;
Humans
;
Stevens-Johnson Syndrome*