• The korean journal of orthodontics
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• v.26 no.3
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• pp.267-279
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• 1996

This study was investigated the changes during treatment and retention period in the Class III malocclusion patients and explored the correlationship between factors that showed relapse tendencies and pre-treatment skeletal pattern and the changes during treatment period. Numbers of total sample were 24 and their Hellman's dental age at the start of treatment was over III B and were retained at least over 1 year 6 months. The following conclusion were obtained by comparing the differences between treatment period and retention period, and after analysing the correlationship of factors that manifested relapse tendencies. 1. The angles formed by FH plane and occlusal plane, FH plane and mandibular plane, and mandibular incisor and mandibular plane changes showed rebound effect during retention period and among them occlusal plane angle and IMPA show reverse correlationship. 2. Upward displacement of the occlusal plane at the end of treatment has returning tendency, is proportional to the displacement during treatment period, but the angle between maxillary and mandibular 1st molar to its basal bone have been constantlsy maintained during the retention period. 3. Mandibular plane decrease during retention period and downward backward rotation during treatment period show correlationship.

• Korean Journal of Ichthyology
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• v.36 no.3
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• pp.288-294
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• 2024

A juvenile of long-snout tonguefish, Symphurus longirostris belonging to the family Cynoglossidae, was collected from the waters around Jeju Island, Korea in August 2023. Molecular analysis revealed that our juvenile specimen was identical to S. longirostris adult from Japan (Kimura-2-parameter distance, d=0.002) based on mitochondrial DNA 16S ribosomal RNA region sequences 475 base pairs, and differed from its congeneric S. orientalis (d=0.199). The juvenile of S. longirostris has the following morphological traits: obvious dermal spots on both sides of the bases of the dorsal and anal fins; and peritoneum bluish black on its dorsalmost aspect. The juvenile of S. longirostris is also distinguished from S. orientalis in that they do not have a patch of melanophores above the abdominal cavity on the ocular-side. This is the first record of S. longirostris in Korea, and we propose a new Korean name "Gin-ko-bo-seop-seo-dae" for this species.

• Journal of the Korean Arthroscopy Society
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• v.6 no.2
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• pp.161-170
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• 2002

Purpose : To investigate arthroscopic simple excision for the treatment of osteochondritis dissecans of the talus and to examine gross change and histological evaluation of the defect through second look arthroscopy. Materials and Methods : This study included twenty-two patients who had osteochondritis dissecans of the talus that was treated with excision of arthroscopic loose body and necrotic bone tissue, leaving bleeding bed. In 7 cases, we performed second look arthroscopic examination for the evaluation of gross change of defects and histologic findings. Final results were evaluated with two clinical and functional protocols. Average follow up period was 42 months from 14 months to 8 years. Results : Ankle-hindfoot score (100 point) was improved significantly (p<0.003). Subjective and functional scores (100 points) averaged 82 points. The defect of lesion had a tendency of filling with fibrous tissue and fibrocartilage. Although the defect was filled with fibrocartilage, specific secondary lesion was not detected through second look arthroscopic examination. Conclusion : Arthroscopic debridement was an effective method for the treatment of osteochondritis dissecans of the talus without progression of secondary lesion even though the defect was filled with fibrocartilage.

• Journal of the korean academy of Pediatric Dentistry
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• v.35 no.4
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• pp.731-736
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• 2008

Odontogenic keratocyst is classified as a developmental odontogenic cyst and is believed to arise from cell rests of the dental lamina. It accounts for 3% to 11% of all jaw cysts and they occur twice as often in the mandible as in the maxilla. Histologically, the cysts are lined by stratified, keratinizing, squamous epithelium. Daugther cysts or microcysts are often observed microscopically. The recurrence rate has been reported variously, but is known by its high recurrence rate. These lesions are more common in males than in females, occur over a wide age range and are typically diagnosed during the 2nd and 3rd decade. The diagnosis depends on the cyst’s microscopic features and is independent of its location and radiographic appearances. This cyst is a radiolucent lesion that is often multiloculated, has a smooth or scalloped border. The cyst is characteristically located in the body and ramus of the mandible, and often occurs in conjunction with an impacted tooth. This case report describes an odontogenic keratocyst on the lower right molar area of an 8-year-old girl. The cyst was removed under the general anaesthesia, and is being checked regularly for any recurrences.

• Ocean and Polar Research
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• v.26 no.3
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• pp.425-431
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• 2004

The study focuses on the morphology of larval and juvenile codlets, Bregmaceros atlanticus, collected from the East China Sea in May 2001 and September 2002. A total of 47 individuals were collected by using an IKMT, and the range of their body lengths was $2.41{\sim}17.18$ mm. Specimens can be categorized into two groups: larvae and juvenile. The first group, in which the yolk is completely absorbed, had a body length of 2.41m. They had big heads, and large and thick melanophores were sparsely scattered about the head, bottom of the pectoral fins, rear parts of the trunk and ends of the notochords. The specimens had a body length of 2.54mm and over, and thin and elongated body trunks. Their heads were significantly smaller, including the body depth, and melanophores were coarsely developed all over their bodies. Occipital rays, the first and unique-ray dorsal fin, were observed on individuals of body length greater than 4.01 m, and the rays grew proportionally with body length, but didn't reach the root of the second dorsal fin. The second group, juveniles, had an body length of 9.82mm and over, and their fin rays satisfied the completed numbers of rays and vertebrae for adults. Melanophores were densely scattered all over the body, where thick colors were observed on the rear parts of the dorsal and anal fins and front part of the caudal fin.

• Journal of Chest Surgery
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• v.38 no.11 s.256
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• pp.799-802
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• 2005

Langerhans cell histiocytosis (LCH) involves disorders previously referred as 'histiocytosis X' (including eosinophilic granuloma, Letterer-Siwe, and Hand-Schuller syndrome). Its clinical patterns are various and it is a basically benign tumoral condition but with a strong tendency toward dissemination and destruction. Its natural history is unpredictable. But, in solitary bone lesion, wide resection with tumor-free margin is required in order to provide the best chance for a cure. In the majority of patients LCH is a osteolytic lesion with a predilection for calvarium and is rarely seen in the skull base and the femur. LCM of rib, especially if solitary, is relatively rare. We report two rare cases of solitary LCH developed in the rib, which were successfully treated by surgical resection.

• Journal of Life Science
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• v.16 no.6
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• pp.964-971
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• 2006

The cancer cells, characterized by local invasion and distant metastasis, are very dependant on extracellular matrix. The expression of matrix metalloproteinases (MMPs) has been implicated in the invasion and metastasis of cancer cells. Among the human MMPs, matirx metalloproteinase-2 (MMP-2) and matrix metalloproteinse-9 (MMP-9) are key enzymes that degrade type IV collagen of the matrix. Here, we studied the effect of disulfiram, an anti-tumor compound, on the suppression of the tumor invasion and the activity of MMP-2, MMP-9 in human osteosarcoma cells (U2OS). Disulfiram had the type IV collagenase inhibitory activity, the effect of inhibition of gene and protein expression, and these inhibitions were responsible for blocking invasion through cell mediated and non-cell mediated pathways. In conclusion, disulfiram inhibited expression of MMP-2 and MMP-9, and regulated the invasion of U2OS, Caki-1 and Caski. These observations raise the possibility of clinical therapeutic applications for disulfiram used as a potential inhibitor of cancer invasion.

• Korean Journal of Ichthyology
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• v.4 no.1
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• pp.1-13
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• 1992

The gobiid fish, Luciogobius guttalus Gill has an anguilliform with some blackish and reddish brown color in life. It grows up to 90mm in total length. The specimens have been collected from several localities in the southern parts of Korea and Hokkaido, Japan. During the ebb tide, the fish was found in high level of intertidal zone exposed to the air among pebbles in the hollows and slopes of rocks. There are also some other small gobiid fishes comprising 3 species of relative gobies and 1 species of blennioid fish. A total of 5 egg masses were collected from the coast of Haeundae in April to May 1990. Each egg mass was deposited in one layer on the underside of a stone embedded in pebbles and guarded by the male parent. The eggs are club-shaped ranging from 2.71 to 2.80mm in long axis and from 0.65 to 0.74mm in short axis. The eggs were hatched in 98 hours after incubatied at the temperature varying from 19.5 to $25.5^{\circ}C$The newly hatched larvae were from 3.85 to 4.00mm in total length with 35~36 myomeres. In eleven days after hatching, total length reached 5.50mm. The part of the fin-fold of the future dorsal and anal fins became high. In sixteen days after hatching, the lavae averaged 6.20mm in total length and the caudal notochord flex at $45^{\circ}$. The larvae reached the juvenile stage in 48~50 days after hatching and attained 12.80~14.00mm in total length, and all fin-rays was formed. Ossification of the cranium took place at 5.50mm of mean total length in parasphenoid and basioccipital. Ossification of the visceral skeleton occurred in areas where active movements of bones are required, notalbly in the parts of feeding and respiration. Vertebrae began to develop from the anterior end to ossify posteriorly. Neural and haemal spines of vertebrae ossified always prior to the corresponding centra. When larvae reached to about 6.60mm in mean total length (17~18 days after hatching), jaw bones were more repidly ossified than vertebrae and cranium. Ossification of all bones nearly completed when the larvae reached to 13.40mm in mean total length (47~50 days after hatching).

• Clinical and Experimental Pediatrics
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• v.52 no.7
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• pp.811-817
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• 2009

Purpose : Inhaled corticosteroids (ICS) are used as first-line agents for the treatment of persistent asthma; however, their use is accompanied by apprehension of potential systemic adverse effects. This study aimed to assess the effects of ICS on bone mineral density (BMD) and bone metabolism in children with asthma. Methods : From February 2008 to September 2008, 26 asthmatic children treated with ICS (ICS group), 15 asthmatic children treated with leukotriene receptor antagonist (LTRA) (LTRA group), and 30 healthy children (Control group) were selected from the Korea University Anam Hospital. BMD and serum bone-specific alkaline phosphatase (BALP) levels were measured. The asthmatic children underwent spirometry and methacholine bronchial challenge test. Results : There were no significant differences in BMD in the lumbar spine (P=0.254) and proximal femur (P=0.297) among the 3 groups. The serum BALP levels were significantly higher in both the ICS (P=0.017) and LTRA (P=0.025) groups than in the Control group. None of the parameters pertaining to ICS use, such as the mean daily dose during the last 6 months, the total cumulative dose, duration of use, and age of commencement of use, showed significant correlations with BMD (P>0.05 for all parameters). Conclusions : We demonstrated that a low dose of ICS does not exert any significant adverse effect on bone metabolism in asthmatic children. These findings support the current recommendations with regard to the use of ICS for asthmatic children.

• Journal of Digital Convergence
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• v.12 no.9
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• pp.283-290
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• 2014

Recently, As the prevalence of precocious is increased in Korea This study was evaluated the physical growth and female sex hormone characteristics of girls with Idiopathic precocious puberty. Retrospective analysis about the medical record of 113 girls for evaluation of signs of precocious puberty except for organic causes was done. Physical growth features and Female sexual hormone were analyzed. Height SDS and Weight SDS were significantly increased in true sexual precocity compared to pseudo sexual precocity. Hormone studies showed that the level of basal LH, FSH, E2 was significantly higher in true precocious puberty. The finding of this study suggest that we need to develop intervention about physical and psychological problems for precocious puberty girls.