• 한국식품조리과학회지
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• 제17권6호
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• pp.549-554
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• 2001

Thermal measurements were made for connective tissues of 5 different fish muscles by using a differential scanning calorimeter(DSC), and connective tissues between muscle fibers and the cross sections of muscle fibers were observed by a light microscope. Red sea bream(cultured and wild) and flounder(cultured, cultured with obosan and wild) were used in this study. It was found that the connective tissues of cultured and frozen fish muscle required less endothermic enthalpy and the endothermic peak temperature was lower than those of wild and fresh ones when they were shrunken and denatured. Therefore, it is likely that the former are more unstable to heat than the latter. The cultured flounder fed with obosan and wild flounder which contained more collagen than cultured flounder and the wild red sea bream showed clear connective tissues between fibers. The cross-section of cultured fish muscle fiber was larger than that of wild one. From these results, collagen content and thermal properties of collagen, cross section of muscle fibers seemed to contribute to the textural difference between wild and cultured fish.

• Journal of Oral Medicine and Pain
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• 제9권1호
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• pp.11-22
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• 1984

The authors administered KCN, NaF,AS2O3 orally to rabbits and caused acute and chronic poisoning, then studied the teeth, jaw bones, and other oral tissues histopathologically. The results were as follows : 1. There was no significant difference between acute poisoned group by NaF and control group. But, vasodilatation in the connective tissues, esepcially marginal area of jaw bone, atrophy and destrution of glandualr cells was observed. 2. Chronic poisoned group by NaF showed degeneration and thicking of subcutanece fibrosis ective tissues, atrophy and degeneration of subcutaneous connective tissues, atrophy and degeneration of muscle fibers, vasodilation of subcutaneous in bone cavities(lacunae), and degeneration of odotlblasts in pulp tissue. 3. Acute poisoned group by KCN showed almost similar appearances as control group, and chronic poisoned group showed hyperplasia of baal layer in epitheilium, degeneration of subcutaneous connective tissues, vasodilation and huperemia, severe hemorrhage of marginal area of jaw bone. hyperplasia of salivary gland ducts, but normal arrangement of muscle fibers and narrow bone carity(lacunae) due to active osteoblastic action, osteodentin were observed. 4. Acute poisoned group by AS2O3 showed degeneration of basal cell, atrophy of blood vessels in palatal muscosa. Chronic poisoned group showed irregular cell arrangement and degeneration, reduction of capillaries in palatal mucosa. Osteoclasts in jaw bone were observed. 5. In Masson's Trichrome and Van Gieson Staining, chronic poisoned group by NaF showed thicking and loosening of subcutaneous connective tissues. Hyperplasia of intermuscular connective tissue was observed in chronic poisoning by KCN and NaF. In PAS staining, negative reation in outer layer of palatalmucosa, positive reaction in keratin layer and mild reaction of basal layer in palate and tongue mucosa was observed.

• Journal of Periodontal and Implant Science
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• 제31권2호
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• pp.317-332
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• 2001

The purpose of this study was to investigate effects of the natural coral(NC) and the hydroxyapatite/calcium sulfate hemihydrate(HA/CS) on an early stages of wound healing in the rat periodontal fenestration defects. In this experiment, twelve male rats(Mean : 520g in BW) aged 8 to 9 months were used. Experimental periodontal fenestration defects were surgically created with tapered fissure bur at the buccal surface of the left mandibular 1st, 2nd molars. The buccal aspects of molar roots were carefully denuded of their periodontal ligament through a bony window created in the left mandibles of rats under general anesthesia. Each experimental periodontal fenestration defect was grafted with natural coral and HA/CS, randomly. An area without bone graft was assigned for negative control group. At 10,35 days, rats were serially sacrificed via intracardiac perfusion with 2.5% glutaraldehyde and specimens were processed with Hematoxylin-Eosin stain for light microscopic evaluation. The results of this study were as follows : 1. The defect areas were filled with dense connective tissues at 10 days in control group. But in the test(NC, HA/CS)groups, the connective tissues around graft materials were formed more loosely and the response of inflammation by graft materials itself was not found. 2. The defect areas were filled with new osteoid tissues and new cementum was not formed on the cut root surface at 35 days in the control group. 3. New osteoid tissue formation was more prominent at 35 days in control than test groups. 4. The NC and HA/CS particles were encapsulated by loose connective tissues at 10 days and by dense connective tissues at 35 days, respectively. 5. In the test groups, resorption of graft particles was not found through the experimental time. From the above results, natural coral and hydroxyapatite/calcium sulfate hemihydrate may be biocompatible and osteoconductive and have a weak adverse reaction to the periodontal tissues.

• 한국패류학회지
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• 제11권2호
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• pp.135-145
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• 1995

A morphological andk histochimical study on the amterior tintacular antenna of Korean sulg, Incilaria fruhstorferi was conducted under the light microscopic observations. The histological sturctures of the antenna were apparently divided into three parts such as the epithelium, the connective tissues and the muscular layers. The cells forming the antenna were classified into several types on the basis of their morphological and histochemical characteristics. The simple columnar epithelium cotering the whole antenna was composed of supporting cells, sensory neurons and type-a clear cells. The connective tissue was consisted of dispersed large cells, type-b clear cells and 7 types of secretory cills such as type-A, type-B, type-F, thpe-G, type-H, type-J and type-K. The large cells found in the form of group situated only in the stalk of the antenna. The large cells possessed relatively small nuclei as compared with their cytoplasm. The cytoplasm positively reacted upon alcian blue, and the nucleus was PASpositive. The type-a and type-b clear cells which were irregular in shape showed no evident reaction against various stains employed in the present study. The secrtory cells were observed mainly in the connective tissues and in the muscular layers. Histochemical components of the type-A, type-B and K were identified as acid mucopolysaccharides and those of type-F and H were neutral mucopolysaccharides. The muscular layders supporting the epithelium possessed the type-B and F secretory cells which were also observed in the connective tissues.

• 치과방사선
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• 제22권1호
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• pp.137-144
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• 1992

This study was performed to observe the effects of arthrography on the tissues of temporomandibular joint histopathologically. Among 17 rabbits (34 joints), 2 (4 joints) were used as normal control group, others (30 joints) were experimentally arthrographed using 0.03㎖ diatrizoate meglumine (Hypaque meglumine 60, Wintrop, U.S.A). The rabbits were sacrificed at 2-hour, 1-, 2-, 4- and 7-day after experiment and the tissues of temporomandibular joint were prepared according to the usual method for light microscopic examination. The results were as follows: 1. There were no changes of the fibrous connective tissues of the condylar fossa, the fibrous connective tissues and hyaline cartilages of the condyle, and the articular dislc 2. In 2-hour experimental group, the proliferation of the surface synovial membrane cells, the congestion and hemorrage of the vessels were observed. 3. In 1 and 2-day experimental group, minimal lymphocytes infiltration was observed with the proliferation of the surface synovial membrane cells, the congestion and hemorrage of the vessels. 4. In 4-day experimental group, the diminution of the proliferation of the surface synovial membrane cells was seen, but there was no vascular changes. 5. In 7-day experimental group, the tissues showed similar appearance to the normal control group.

• Toxicological Research
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• 제20권1호
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• pp.13-20
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• 2004

The purpose of this study is to compare the biocompatibility of commercial purity Ti, Ti-6AI-4V and Ti-6AI-7Nb alloy specimens with and without surface treatment in mouse abdominal connective tissue in vivo. Each metal was implanted into specific abdominal subdermal tissue site of female mouse. After 4 weeks, the implants were removed and abdominal tissues were fixed, dehydrated and embedded in glycol methacrylate resin. And the tissues were histologically prepared for microscopical evaluation. It was characterized by the presence of connective tissue with fibrous capsule surrounding the implant. The fibrous tissue surrounding the implant was studied to determine the biocompatibility of implanted metals. The average thickness of the fibrous capsule formed around the implant was much thinner for the hydrogen peroxide added hydrochloric acid solution-treated specimen than for the others. The results of this evaluation indicate that modification of the surface properties of titanium and titanium alloy implants changes the biological properties in the abdominal connective tissue. In conclusion, these observations suggest that the proper surface treatment performed in the study is effective for the improvement of biocompatibility.

• 한국어병학회지
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• 제7권2호
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• pp.151-160
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• 1994

스쿠지카섬모충(Scuticociliatid) 감염에 따르는 어체조직의 조직학적 손상유형과 심부조직으로의 이행 경로를 규명하기 위하여 중감염된 빈사상태의 넙치 (Paralichthys olivaceus) 치어 18 마리를 대상으로 전 장기 및 조직에 대한 병리조직학적 검사를 실시하였다. 피부 및 하부의 골격근조직은 다수의 스쿠지카충의 침입에 기인하여 심한 변성 또는 괴사소견과 함께 대식구의 침윤이 현저하였다. 비교적 초기병변에서는 치밀결합조직인 진피나 골격근섬유의 변성보다 이들을 지지하는 소성결합조직성분이 더욱 심한 변성소견을 보였다. 이들 병변부내 또는 병변부와 격리된 소성결합조직내의 혈관 또는 임파공간내에 수개의 충체가 확인되었다. 신경다발과 신경절내 또는 주위 소성결합조직내에 다수의 충체침입이 확인되었으나 실질의 조직학적 이상은 비교적 경미하였다. 뇌 및 척수의 경막하강에 다수의 충체밀집과 함께 신경실질을 포함한 인접조직은 경도 내지 심한 괴사소견을 보였으며 충체의 침입부위는 피질역에 주로 한정되어 있었다. 각종 아가미관련조직에서 섬모충의 기생이 확인되었으며 특히 소성결합조직은 다수의 충체침입으로 심한 변성소견을 수반하였으며, 특히 새궁 및 일차새변의 혈관내에서 충체가 인정되었다. 본 병리학적 검사결과에서 넙치치어에서의 스쿠지카섬모충은 어체내 침입 후 실질조직보다 소성 결합조직을 우선적으로 파괴하는 동시에 결합조직내의 혈관 또는 임파관으로 쉽게 이행하여 단시간내에 심부조직으로 확산되는 것으로 사료되었다.

• 한국동물위생학회지
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• 제16권1호
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• pp.57-64
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• 1993

This survey was performed to report rare outbreak of liver cirrhosis in Korean native goat (KNG) which was died of Yangpyeong's goat farm on Feb. 1992. The examination for the KNG was carried out by clinical signs, necropsy and various lab-oratory test including parasitic, bacterial and histological test. The KNG looked jaundice, ascite, hemorrhage of lumen, abomasum and intestine, and brownish smooth cirrhotic liver at necropsy. Histological examination for liver revealed considerable proliferation of connective tissue and piecemeal necrosis which was caused by chronic active inflammation in interlobules and intralobules. There were atrophic micro and macro nodules which were sur-rounded by connective tissue. The lobular structure lack almost all central vein. The portal areas appearred proliferation of bile ducts, blood vessels and connective tissues. These connective tissue infiltrated heavily with plasma cells, Iymphocytes and histocytes. Histological examination for brain proved to be hepatic encephalopathy by virture of congestion and edema in cerebral medullary. From these results were demonstrated miked nodular, active, postnecrotic liver cirrhosis.

• 생명과학회지
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• 제10권5호
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• pp.533-541
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• 2000

Compared to mammal including human, many bioreactive genes that regulate various biological events has not been cloned and characterized yet in fishes, especially shark, Scyliorhinus torazame. In orther to isolate genes that regulate physiological processes in cartilaginors fishes, we performed reverse transcription-polymerase chain reaction (RT-PCR) using the RNA of cartilage tissues of Scyliofhinus torazame. The cloned partial genes were 86%, 80%, 73%, 84%, 75%, 79% identical to $\alpha$- actin, 90-kDa heat-shock protein, methyle-neterahydrofolate dehydrogenase-methenyltertrahydrofolate cyclohudrolase-formyltetrahydrofolate synthetase, ubiquitin, glutamine synthetase and connective tissue growth factor genes of human, respectively. They also have similar nucleotide sequence homologues with those of another species. These partial bioreactive genes elucidated in this study may support to studies of phylogenetic analysis based on evolutionary relationships between shark and other species.

• Journal of Periodontal and Implant Science
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• 제24권3호
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• pp.607-617
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• 1994

To determine the effect of tenascin on forming periodontal pocket and pseudopocket, the ginival tissues were surgically obtained from the patients with adult periodontitis(10) and non-inflammatory phenytoin-associated gingival hyperplasia(5). The excised tissue specimens were fixed in neutral formalin for $6{\sim}24$ hours, embedded with paraffin, sectioned at 4-6m in thickness, mounted on glass slides coated with 3-aminopropyltriethoxysilane(Sigma Chemical Co., St. Louis, MO, U.SA.) and immunohistochemically processed by Avidin-Biotin peroxidase complex method for the localization of tenascin, using monoclonal mouse anti-human tenascin antiboday(Chemicon-International Inc., Temecula, CA, U.S.A., 1: 5,000) as the primary antibody. Regardless of periodontal pocket and pseudopocket, tenascin was localized along the connective tissue subjacent to basement membrane of gingival epithelium, and strong positive reactivity was obviously noted in the papillary projections of gingival connective tissue. The results suggest that tenascin may affect the development of papillary projections and the proliferation of epithelial cells.