1.The Effects of Body Mass Composition and Cushion Type on Seat-Interface Pressure in Spinal Cord Injured Patients.
Kang Hee CHO ; Jaewon BEOM ; Jee Hyun YUK ; Seung Chan AHN
Annals of Rehabilitation Medicine 2015;39(6):971-979
OBJECTIVE: To investigate the effects of body mass composition and cushion type on seat-interface pressure in spinal cord injured (SCI) patients and healthy subjects. METHODS: Twenty SCI patients and control subjects were included and their body mass composition measured. Seat-interface pressure was measured with participants in an upright sitting posture on a wheelchair with three kinds of seat cushion and without a seat cushion. We also measured the pressure with each participant in three kinds of sitting postures on each air-filled cushion. We used repeated measure ANOVA, the Mann-Whitney test, and Spearman correlation coefficient for statistical analysis. RESULTS: The total skeletal muscle mass and body water in the lower extremities were significantly higher in the control group, whilst body fat was significantly higher in the SCI group. However, the seat-interface pressure and body mass composition were not significantly correlated in both groups. Each of the three types of seat cushion resulted in significant reduction in the seat-interface pressure. The SCI group had significantly higher seatinterface pressure than the control group regardless of cushion type or sitting posture. The three kinds of sitting posture did not result in a significant reduction of seat-interface pressure. CONCLUSION: We confirmed that the body mass composition does not have a direct effect on seat-interface pressure. However, a reduction of skeletal muscle mass and body water can influence the occurrence of pressure ulcers. Furthermore, in order to minimize seat-interface pressure, it is necessary to apply a method fitted to each individual rather than a uniform method.
Adipose Tissue
;
Body Mass Index
;
Body Water
;
Humans
;
Lower Extremity
;
Muscle, Skeletal
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Posture
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Pressure Ulcer
;
Spinal Cord Injuries
;
Spinal Cord*
;
Wheelchairs
3.Severe Eczema Herpeticum in an Adult Patient with Atopic Dermatitis Following Herbal Medicine and Acupuncture
Hanjae LEE ; Jaewon LEE ; Ji Soo LIM ; Hyun Sun PARK ; Hyun Sun YOON ; Soyun CHO
Korean Journal of Dermatology 2019;57(6):335-338
Atopic dermatitis is a common chronic, relapsing skin disorder, and many patients with atopic dermatitis use complementary and alternative medicine instead of consulting a certified dermatologist. Herein, we report the case of a 38-year-old woman with severe eczema herpeticum who had been treated with herbal medicine and acupuncture for her atopic dermatitis. Herbal medicine and acupuncture are the most frequent types of alternative medicine that Korean patients rely on. However, the effectiveness of these treatments in atopic dermatitis remains unclear as there is a great lack of scientific evidence supporting it. As atopic dermatitis can cause potentially fatal secondary infections such as eczema herpeticum, dermatologists should put great effort into communicating with and educating the patients and in guiding them to choose the most appropriate treatment plan for managing their atopic dermatitis.
Acupuncture
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Adult
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Coinfection
;
Complementary Therapies
;
Dermatitis, Atopic
;
Eczema
;
Female
;
Herbal Medicine
;
Humans
;
Kaposi Varicelliform Eruption
;
Skin
4.A Case of Indeterminate Dendritic Cell Tumor: A Rare Neoplasm with Langerhans Cell Lineage.
Jungyoon MOON ; Ji Hoon YANG ; Jaewon LEE ; Jong Seo PARK ; Kwang Hyun CHO
Annals of Dermatology 2018;30(6):744-746
No abstract available.
Cell Lineage*
;
Dendritic Cells*
5.Pagetoid Bowen Disease Initially Misdiagnosed as Ectopic Extramammary Paget's Disease.
Jaewon LEE ; Minwoo KIM ; Jungyoon MOON ; Hyun sun YOON ; Soyun CHO ; Hyun sun PARK
Annals of Dermatology 2018;30(2):218-221
Pagetoid Bowen disease is a histological variant of Bowen disease which demonstrates large pale staining cells (pagetoid cells). It requires differential diagnosis from other cutaneous malignancies with similar patterns, such as extramammary Paget's disease (EMPD) and Pagetoid melanoma in situ. Herein, we report a case of Pagetoid Bowen disease which was initially misdiagnosed as ectopic EMPD.
Bowen's Disease*
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Diagnosis, Differential
;
Immunohistochemistry
;
Melanoma
;
Paget Disease, Extramammary*
6.Roles of Sonic Hedgehog Signaling During Tooth Root and Periodontium Formation
Jaewon HWANG ; Eui sic CHO ; Yeonmi YANG
Journal of Korean Academy of Pediatric Dentistry 2018;45(2):144-153
The aim of this study was to understand the roles of Sonic Hedgehog (SHH) signaling during tooth root and periodontium formation. In this study, we generated the dental mesenchyme-specific Smoothened (Smo) activated/inactivated mice with the activity of Cre recombinase under the control of osteocalcin promoter.In the Smo activated mutant molar sections at the postnatal 28 days, we found extremely thin root dentin and widened pulp chamber. Picrosirius red staining showed loosely arranged fibers in the periodontal space and decreased cellular cementum with some root resorption. Immunohistochemical staining showed less localization of matrix proteins such as Bsp, Dmp1, Pstn, and Ank in the cementum, periodontal ligament, and/or cementoblast.In the Smo inactivated mutant mouse, there was not any remarkable differences in the localization of these matrix proteins compared with the wild type. These findings suggest that adequate suppressing regulation of SHH signaling is required in the development of tooth root and periodontium.
Animals
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Dental Cementum
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Dental Pulp Cavity
;
Dentin
;
Hedgehogs
;
Mice
;
Molar
;
Osteocalcin
;
Periodontal Ligament
;
Periodontium
;
Recombinases
;
Root Resorption
;
Tooth Root
;
Tooth
7.Bispecific Antibody-Bound T Cells as a Novel Anticancer Immunotherapy
Jaewon CHO ; Nara TAE ; Jae-Hee AHN ; Sun-Young CHANG ; Hyun-Jeong KO ; Dae Hee KIM
Biomolecules & Therapeutics 2022;30(5):418-426
Chimeric antigen receptor T (CAR-T) cell therapy is one of the promising anticancer treatments. It shows a high overall response rate with complete response to blood cancer. However, there is a limitation to solid tumor treatment. Additionally, this currently approved therapy exhibits side effects such as cytokine release syndrome and neurotoxicity. Alternatively, bispecific antibody is an innovative therapeutic tool that simultaneously engages specific immune cells to disease-related target cells. Since programmed death ligand 1 (PD-L1) is an immune checkpoint molecule highly expressed in some cancer cells, in the current study, we generated αCD3xαPD-L1 bispecific antibody (BiTE) which can engage T cells to PD-L1+ cancer cells. We observed that the BiTE-bound OT-1 T cells effectively killed cancer cells in vitro and in vivo. They substantially increased the recruitment of effector memory CD8+ T cells having CD8+CD44+CD62Llow phenotype in tumor. Interestingly, we also observed that BiTE-bound polyclonal T cells showed highly efficacious tumor killing activity in vivo in comparison with the direct intravenous treatment of bispecific antibody, suggesting that PD-L1-directed migration and engagement of activated T cells might increase cancer cell killing. Additionally, BiTE-bound CAR-T cells which targets human Her-2eu exhibited enhanced killing effect on Her-2-expressing cancer cells in vivo, suggesting that this could be a novel therapeutic regimen. Collectively, our results suggested that engaging activated T cells with cancer cells using αCD3xαPD-L1 BiTE could be an innovative next generation anticancer therapy which exerts simultaneous inhibitory functions on PD-L1 as well as increasing the infiltration of activated T cells having effector memory phenotype in tumor site.