1.Multiple Eruptive Dermatofibromas in a Healthy Child
Hye Jin LEE ; Ji Yeon BYUN ; Hae Young CHOI ; You Won CHOI
Korean Journal of Dermatology 2018;56(1):78-80
No abstract available.
Child
;
Histiocytoma, Benign Fibrous
;
Humans
2.Orthodontic diagnosis rates based on panoramic radiographs in children aged 6–8 years:A retrospective study
The Korean Journal of Orthodontics 2024;54(3):185-195
Objective:
This study aimed to retrospectively analyze the prevalence of orthodontic problems and the proportion of patients who underwent orthodontic diagnosis among children aged 6 (n = 300), 7 (n = 400), and 8 (n = 400) years who had undergone panoramic radiography.
Methods:
Children were divided into five groups according to their chief complaint and consultation: conservative dentistry, oral and maxillofacial surgery, orthodontics, periodontics, and prosthodontics). Chief complaints investigated included first molar eruption, lack of space for incisor eruption, frequency of eruption problems, lack of space, impaction, supernumerary teeth (SNT), missing teeth, and ectropion eruption.The number of patients whose chief complaint was not related to orthodontics but had dental problems requiring orthodontic treatment was counted. The proportion of patients with orthodontic problems who received an orthodontic diagnosis was also examined.
Results:
Dental trauma and SNT were the most frequent chief complaints among the children. The proportion of patients with orthodontic problems increased with age. However, the orthodontic diagnosis rates based on panoramic radiographs among children aged 6, 7, 8 years were only 1.5% (6 years) and 23% (7 and 8 years).
Conclusions
Accurate information should be provided to patient caregivers to correct misconceptions regarding the appropriateness of delaying orthodontic examination until permanent dentition is established.
3.Assay of Tissue Polypeptide Antigen in Gynecological Tumor.
Yeon Wung YOU ; Soo Nyung KIM ; In Sook SOHN ; Ji Young LEE
Korean Journal of Obstetrics and Gynecology 2001;44(8):1494-1498
OBJECTIVE: The measurement of tumor-associated antigen as tumor makers in the serum is useful for early diagnosis, differential diagnosis, and the determination of remission after therapy in cases of malignancy. A tumor-associated antigen is not always present in all the cells forming the tumor and also be detected in other tumors or normal organs. Tissue polypeptide antigen (TPA) is a single polypeptide chain without carbohydrate. TPA has immunosuppresive properties in patients with cancer. The aim of this study was to evaluate the clinical usefulness of the cytokeratin tumor marker TPA in early diagnosis of patients with the gynecologic cancer. METHODS: In this study, the levels of TPA were measured in the serum of 61 patients with benign gynecologic tumors, 24 patients with malignant gynecologic neoplasms, and 38 healthy nonpregnant females. Serum TPA level was measured by a "sandwitch technique based" radioimmunoassay. RESULTS: As a result, serum TPA level was 30.4+/-7.6 U/L in control group, 32.6+/-9.4 U/L in benign gynecologic tumor group, 39.1+/-9.8 U/L in malignant gynecologic neoplasm. Serum TPA level was 56.6+/-7.0 U/L in ovarian cancer group. CONCLUSION: Serum levels of TPA was increased in the ovarian cancer group, but it does not seem to be a useful tumor maker for non-ovarian cancer. It would seem that measurement of TPA is useful for early diagnosis of ovarian cancer.
Diagnosis, Differential
;
Early Diagnosis
;
Female
;
Genital Neoplasms, Female
;
Humans
;
Keratins
;
Ovarian Neoplasms
;
Radioimmunoassay
;
Tissue Polypeptide Antigen*
4.Cutaneous Lupus Erythematosus Presenting as Localized Grouped Papules Mimicking Herpes Zoster on the Back.
Ji Young YANG ; Soo Yeon CHO ; You Chan KIM
Annals of Dermatology 2018;30(6):731-732
No abstract available.
Herpes Zoster*
;
Lupus Erythematosus, Cutaneous*
5.Aplasia Cutis Congenita of the Scalp Accompanied by Limb Hypoplasia: Adamson-Oliver Syndrome.
You Jin HA ; Ji Yeon BYUN ; You Won CHOI ; Ki Bum MYUNG ; Hae Young CHOI
Korean Journal of Dermatology 2011;49(10):952-954
Aplasia cutis congenita (ACC) is an uncommon condition which is characterized by congenital, localized or widespread absence of skin or scar formation. Lesions can be multiple and may occur on any body surface, although they are mostly seen on the scalp as a solitary lesion. ACC is most often a benign isolated defect; but it can be associated with other physical anomalies or malformation syndromes. Adams-Oliver syndrome is a distinct subtype in which distal limb reduction is found in association with a solitary scalp defect. There is no single underlying cause of ACC; it may reflect a disruption of intrauterine skin development. A 25 day-old boy was referred to our clinic with a thick hemorrhagic crust, and a surrounding hairless atrophic scar on the midline over the skull vertex. He also had hypoplasia of the left 2nd to 5th toes since birth. The rest of the physical examination as well as an ultrasound examination of the brain were normal. Herein we report a rare case of ACC of the scalp accompanied by distal limb hypoplasia, Adamson-Oliver syndrome.
Brain
;
Cicatrix
;
Ectodermal Dysplasia
;
Extremities
;
Limb Deformities, Congenital
;
Parturition
;
Physical Examination
;
Scalp
;
Scalp Dermatoses
;
Skin
;
Skull
;
Toes
6.Evaluating the accuracy (trueness and precision) of interim crowns manufactured using digital light processing according to post-curing time: An in vitro study
Beom-Il LEE ; Seung-Gyu YOU ; Seung-Min YOU ; Dong-Yeon KIM ; Ji-Hwan KIM
The Journal of Advanced Prosthodontics 2021;13(2):89-99
PURPOSE:
This study aimed to compare the accuracy (trueness and precision) of interim crowns fabricated using DLP (digital light processing) according to postcuring time. MATERIALS AND METHODS: A virtual stone study die of the upper right first molar was created using a dental laboratory scanner. After designing interim crowns on the virtual study die and saving them as Standard Triangulated Language files, 30 interim crowns were fabricated using a DLP-type 3D printer. Additively manufactured interim crowns were post-cured using three different time conditions-10-minute post-curing interim crown (10-MPCI), 20-minute postcuring interim crown (20-MPCI), and 30-minute post-curing interim crown (30-MPCI) (n = 10 per group). The scan data of the external and intaglio surfaces were overlapped with reference crown data, and trueness was measured using the best-fit alignment method. In the external and intaglio surface groups (n = 45 per group), precision was measured using a combination formula exclusive to scan data (10 C2). Significant differences in accuracy (trueness and precision) data were analyzed using the Kruskal-Wallis H test, and post hoc analysis was performed using the Mann-Whitney U test with Bonferroni correction (α=.05).
RESULTS:
In the 10-MPCI, 20-MPCI, and 30-MPCI groups, there was a statistically significant difference in the accuracy of the external and intaglio surfaces (P <.05). On the external and intaglio surfaces, the root mean square (RMS) values of trueness and precision were the lowest in the 10-MPCI group.
CONCLUSION
Interim crowns with 10-minute post-curing showed high accuracy.
7.Evaluating the accuracy (trueness and precision) of interim crowns manufactured using digital light processing according to post-curing time: An in vitro study
Beom-Il LEE ; Seung-Gyu YOU ; Seung-Min YOU ; Dong-Yeon KIM ; Ji-Hwan KIM
The Journal of Advanced Prosthodontics 2021;13(2):89-99
PURPOSE:
This study aimed to compare the accuracy (trueness and precision) of interim crowns fabricated using DLP (digital light processing) according to postcuring time. MATERIALS AND METHODS: A virtual stone study die of the upper right first molar was created using a dental laboratory scanner. After designing interim crowns on the virtual study die and saving them as Standard Triangulated Language files, 30 interim crowns were fabricated using a DLP-type 3D printer. Additively manufactured interim crowns were post-cured using three different time conditions-10-minute post-curing interim crown (10-MPCI), 20-minute postcuring interim crown (20-MPCI), and 30-minute post-curing interim crown (30-MPCI) (n = 10 per group). The scan data of the external and intaglio surfaces were overlapped with reference crown data, and trueness was measured using the best-fit alignment method. In the external and intaglio surface groups (n = 45 per group), precision was measured using a combination formula exclusive to scan data (10 C2). Significant differences in accuracy (trueness and precision) data were analyzed using the Kruskal-Wallis H test, and post hoc analysis was performed using the Mann-Whitney U test with Bonferroni correction (α=.05).
RESULTS:
In the 10-MPCI, 20-MPCI, and 30-MPCI groups, there was a statistically significant difference in the accuracy of the external and intaglio surfaces (P <.05). On the external and intaglio surfaces, the root mean square (RMS) values of trueness and precision were the lowest in the 10-MPCI group.
CONCLUSION
Interim crowns with 10-minute post-curing showed high accuracy.
8.Expression of IL-10, TGF-beta1 and TNF-alpha in Cultured Keratinocytes (HaCaT Cells) after IPL Treatment or ALA-IPL Photodynamic Treatment.
Ji Yeon BYUN ; Hae Young CHOI ; Ki Bum MYUNG ; You Won CHOI
Annals of Dermatology 2009;21(1):12-17
BACKGROUND: Depending on the light dose and concentration of photosensitizer for photodynamic treatment (PDT), a multitude of dose-related events are demonstrable in PDT-treated cells. Sublethal doses may result in the alteration of cytokine release and consequently modify immune actions, rather than cause cell death. OBJECTIVE: The purpose of this study was to investigate cytokine expression in cultured HaCaT cells after intense pulse light (IPL) treatment or PDT utilizing 5-aminolevulinic acid (ALA) and IPL at sublethal doses. METHODS: Cultured HaCaT cells were treated with either IPL only (4, 8 and 12 J/cm2) or ALA-IPL PDT (100micromol/L of ALA; 0, 4, 8, and 12 J/cm2 of IPL). The expression of IL-10, TGF-beta1 and TNF-alpha was investigated by reverse transcription-polymerase chain reaction and enzyme linked immunosorbent assay. RESULTS: IL-10 protein increased up to 5.95-fold after IPL treatment and up to 2.85-fold after PDT. TGF-beta1 mRNA and protein showed slight increases after both IPL treatment and PDT, of which the latter induced slightly larger increases. TNF-alpha mRNA and protein showed no induction or reduction after PDT. CONCLUSION: Increased expressions of IL-10 and TGF-beta1 was observed after PDT. The induction of IL-10 may contribute to the anti-inflammatory effect, which explains the therapeutic benefit of PDT for inflammatory dermatoses, and that of TGF-beta1 may be related to the therapeutic effect for psoriasis. The finding that IL-10 induction was more marked after IPL treatment than after PDT suggests that other mechanisms than IL-10 induction in keratinocytes after PDT may participate in the anti-inflammatory effect of PDT.
Cell Death
;
Enzyme-Linked Immunosorbent Assay
;
Interleukin-10
;
Keratinocytes
;
Light
;
Photochemotherapy
;
Psoriasis
;
RNA, Messenger
;
Skin Diseases
;
Transforming Growth Factor beta1
;
Triazenes
;
Tumor Necrosis Factor-alpha
9.Tracking Intravenous Adipose-Derived Mesenchymal Stem Cells in a Model of Elastase-Induced Emphysema.
You Sun KIM ; Ji Young KIM ; Dong Myung SHIN ; Jin Won HUH ; Sei Won LEE ; Yeon Mok OH
Tuberculosis and Respiratory Diseases 2014;77(3):116-123
BACKGROUND: Mesenchymal stem cells (MSCs) obtained from bone marrow or adipose tissue can successfully repair emphysematous animal lungs, which is a characteristic of chronic obstructive pulmonary disease. Here, we describe the cellular distribution of MSCs that were intravenously injected into mice with elastase-induced emphysema. The distributions were also compared to the distributions in control mice without emphysema. METHODS: We used fluorescence optical imaging with quantum dots (QDs) to track intravenously injected MSCs. In addition, we used a human Alu sequence-based real-time polymerase chain reaction method to assess the lungs, liver, kidney, and spleen in mice with elastase-induced emphysema and control mice at 1, 4, 24, 72, and 168 hours after MSCs injection. RESULTS: The injected MSCs were detected with QD fluorescence at 1- and 4-hour postinjection, and the human Alu sequence was detected at 1-, 4- and 24-hour postinjection in control mice (lungs only). Injected MSCs remained more in mice with elastase-induced emphysema at 1, 4, and 24 hours after MSCs injection than the control lungs without emphysema. CONCLUSION: In conclusion, our results show that injected MSCs were observed at 1 and 4 hours post injection and more MSCs remain in lungs with emphysema.
Adipose Tissue
;
Animals
;
Bone Marrow
;
Cell Tracking
;
Emphysema*
;
Fluorescence
;
Humans
;
Injections, Intravenous
;
Kidney
;
Liver
;
Lung
;
Mesenchymal Stromal Cells*
;
Mice
;
Optical Imaging
;
Pulmonary Disease, Chronic Obstructive
;
Quantum Dots
;
Real-Time Polymerase Chain Reaction
;
Spleen
10.Periumbilical Perforating Pseudoxanthoma Elasticum in a Young Male Patient.
Sang Woo LEE ; Ji Yeon BYUN ; You Won CHOI ; Ki Bum MYUNG ; Hae Young CHOI
Korean Journal of Dermatology 2011;49(12):1135-1137
Periumbilical perforating pseudoxanthoma elasticum is a rare acquired disorder of connective tissue. It has been suggested that repeated traumas of pregnancy, obesity, or abdominal surgery promote localized degeneration of elastic fibers. Most cases reported in the English literature occurred in obese, middle aged, multiparous women. We describe a 29-year-old male who had two hyperpigmented plaques on the periumbilical area. He had angioid streaks, but was not obese and did not have hypertension. A skin biopsy revealed transepidermal elimination of degenerated and calcified elastic fibers, which was consistent with periumbilical perforating pseudoxanthoma elasticum. We report an interesting case of periumbilical perforating pseudoxanthoma elasticum that occurred in a young man with no known predisposing risk factors.
Adult
;
Angioid Streaks
;
Biopsy
;
Connective Tissue
;
Elastic Tissue
;
Female
;
Humans
;
Hypertension
;
Male
;
Middle Aged
;
Obesity
;
Pregnancy
;
Pseudoxanthoma Elasticum
;
Risk Factors
;
Skin