• 대한수의학회지
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• 제47권1호
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• pp.91-94
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• 2007

tisue disease of dog and cat, resembling Ehlers-Danlos syndrome (EDS) in man. EDS is characterizedby loose, hyperextensible and, fragile skin, it is attributed to mutations in connective tisue gene. Thesemutations cause defects in type I or II collagen synthesis and as a result lack of strength or elasticityto skin, joint, ligament and vessels. EDS-affected animals often experience subcutaneous hematomas thathave long bleeding times. The 4-years old male Yorkshire terrier was evaluated because of subcutaneoushematoma after stifle surgery. Clinical examination revealed a thin and hyperextensible skin and jointlaxity. The degree of skin extensibility index was 23.4%, marked skin stretchy. Clinical diagnosis wasconfirmed by histophathological examination of a skin biopsy revealing reduced packing density ofcollagen fiber of skin.

• 대한수의학회지
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• 제7권2호
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• pp.19-24
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• 1967

Normal Albino rats were received glycerin via subcutaneously and Staphylococcus aureus intravenously. The microorganism was coagulase-positive and non-hemolytic. The rats received glycerin alone showed an acute tubular nephrosis, and the others such as glycer in induced nephrotic rats showed a number of different findings: At the first hours of the bacterial injection, in medulla, the bacterial clumps and inflammatory cell infiltration, and microabscesses with retrogressive changes of proximal convoluted tubulles were observed. The suppurative inflammation was observed in days. Five weeks after the initial innoulation of the organism kidney was shown restoration to a histologically normal cortex. The proliferation of fibrous connective tissue and small numbers of chronic inflammatory cells were observed in the medulla where an acute inflammatory process was enhanced presumably. On the other hand, the Albino rats administered Staphyloceccus aureus alone resulted in n moderate degree of vacuolization in proximal convoluted tubules and a number of casts in the early stage. No, bacterial clumps and microabscesses were observed in the rats.

• 한국임상수의학회지
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• 제3권2호
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• pp.335-345
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• 1986

A total of 499 stomachs consisted of 393 slaughter and 106 breeding pigs from industrial farm was examined for ulcerative lesions grossly and microscopically. The relationship between the ulcerative lesions and stomach contents was also examined. 1. The majority of stomachs has one or more lesions of ulcerative process, including parakeratosis(64.1%), erosions(10.2%), acute ulcers(2.8%), chronic ulcers(1.4%), and scars(0.8%). 2. The incidence and the degree of the esophagogastric lesions in the breeding pigs were similar to those of the slaughter pigs. But ulcerative lesions of the fundic lesions in the breeding pigs were found to be more remarkable than those of the slaughter pigs. 3. The stomach contents of the pigs having gastric ulcers were mostly fluid in nature, which were dry in the normal stomach. 4. Histologically, muscular hypertrophy, connective tissue hyperplasia and vascularity were shown in the ulcerative lesions of the esophagogastric portion. Thrombosis, necrosis and granulation tissue formation were found frequently.

• Journal of Yeungnam Medical Science
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• 제15권1호
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• pp.151-158
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• 1998

통상 유방 초음파 검사에서 후방 에코 감소는 악성종괴를 나타내는 기준으로 여겨져왔다. 그러나 저자들의 입상경험에서 후방 에코 감소를 보이지 않던 종괴가 술후 조직검사에서 악성 종양으로 판명되는 경우가 적지 않았다. 하여 저자들은 유방의 조직학적 구성 요소중 어떤 것이 후방 에코 감소에 영향을 미치는가에 대해 침윤성 관상피암(유방암중의 한 종류에 국한되지만 유방암의 대부분을 차지한다.)으로 판정된 26례를 대상으로 후향적으로 분석해보았다. 후방 에코 양상을 다양한 조직학적 소견, 예를 들면, 결체조직의 양, 탄력섬유증 (elastosis)의 정도, 조직괴사의 정도, 육안적 경계, 종괴내 염증반응, 조직학적 분화도, 유분열지수 (mitotic index)등과 비교 분석하였다. 아홉예 (35%)가 후방 에코 감소를 보였고, 17례 (65%)가 후방 에코 증가를 보였다. 후방 에코 감소를 보인 종괴들은 많은 결체조직과 고탄력섬유증, 그리고 불분명한 경계를 보였다(p<0.05). 하지만 나머지 조직학적 요소들은 후방 에코 감소에 영향을 미치지 않았다. 저자들의 연구에 의하면 유방 초음파 검사에서 종괴내 결체조직의 양과 탄력섬유증의 정도에 의해 후방 에코 증감을 보여 단순히 후방 에코 감소 그 자체가 악성을 시사하는 소견으로 받아들이기 어려울 것으로 생각한다.

• The Journal of Korean Physical Therapy
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• 제12권2호
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• pp.191-201
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• 2000

This study was investigated the effects of a direct current and ultrasound on transdermal transport of dexamethasone into the rabbits which had contusion in the thigh. Each group was treated under the tallowing conditions. 1. EXP group I : $10\%$ dexamethasone ointment and ultrasound 2. EXP group II : $1\%$aqueous solution of dexamethasone and iontophoresis 3. EXP group III : the application of $10\%$ dexamethasone ointment 4. Control group : No treatment The degree of anti-inflammation was evaluated by the naked eye, the change in girth of thigh, and a light microscope. The results were as follows. 1.8y the naked eye. an inflammation sign was seen in all groups and especially. symptoms of redness. heat swelling were prominent in EXP group I. 2. In comparision in the change of girth of thigh, only EXP group II showed no significant change. Therefore, it meant that there was effective anti-inflammatory reaction in EXP group II. 3. The infiltration of inflammation cells, the degree of swelling, and the degree of crosslinking of connective tissues were evaluated with a light microscope. As a result, EXP group II showed the most effective anti-inflammatory reaction. And, in order of EXP group III, control group, the effect of anti-inflammation reaction was decreased. 4. EXP group I showed more intensive inflammation than control group.

• Journal of Chest Surgery
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• 제37권8호
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• pp.623-631
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• 2004

배경: 대망의 가장 중요한 성질 중 하나인 혈관 형성 촉진 기능을 이용하여 초냉동 보관된 기관 이식편의 대망 내 이식이 기관 이식편의 생육성이나 혈관 형성에 미치는 영향을 연구하고자 한다. 대상 및 방법: 8주령의 Sprague Dawley rat 수컷의 초냉동 보관된 기관 이식편을 백서의 복강 내 대망에 이식하였다. 연구군은 냉동 보관기간과 대망 내 이식기간에 따라 4개의 군으로 분류하였다(n=52). 이식된 기관 이식편을 획득하여 기관 평활근 및 주변 결합 조직의 섬유화 및 염증 정도, 기관 연골의 석회화 정도, 기관 내 상피세포의 변화 및 연골간 간격에서의 혈관 형성 정도 등을 검사하였다. 결과: 기관 평활근의 염증 정도는 냉동 보관기간이나 대망 내 이식기간에 따라 유의한 차이를 보이지 않았고, 기관 연골의 석회화 정도는 냉동 보관기간과 상관없이 대부분 심하게 진행되어 있었다. 혈관 형성은 기관 이식편의 양끝뿐만 아니라 중간 부위에서도 충분히 이루어져 있었다. 결론: 초냉동 보관된 백서의 장분절 기관 이식편을 2주간 대망 내 이식을 시행한 결과 기관 이식편의 조직 생육성이 적절히 유지되면서 새로운 혈관이 형성되었다. 향후 동종 기관 이식 시 초냉동 보관된 기관 이식편을 대망 내 이식하여 새로운 혈관이 형성된 후 단계적으로 기관 이식을 시행하는 데 도움이 될 수 있다고 생각한다.

• Applied Microscopy
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• 제28권1호
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• pp.21-38
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• 1998

The present study was performed to determine the effect of cold stress on myocardium of aging rat. Control groups, which aged 6, 12 and 24 months, were compared with age-matched experimental groups that were exposed to moderate cold stress for a hours daily in a week at laboratory cold room $(4{\pm}1^{\circ}C)$. The histological, histochemical and ultrastructural changes of myocardium were observed. The results were summarized as follow: 1. Age-dependent histological change of control groups was observed the formation of contraction band in 24months aged group. The experimental groups submitted to cold stress showed a similar change pattern as seen in control groups. However, the degree of change in the experimental groups was significantly larger than that of control groups. In the 34 months aged group the formation of hypercontraction band was observed. 2. Regarding age-dependent histochemical changes of control groups, we observed the increase activities of PAS and Masson's trichrome. In experimental groups the activities of PAS and Masson's trichrome were also increased with age. Compare with control group, the activities of PAS was increased but the activities of Masson's trichrome was decreased. 3. Age-dependent ultrastructural changes on vacuolization, lysosome were observed. In control groups the structural changes occur at 12 months. The accumulation of lipofuscin, contraction band, hypercontraction band and a component of connective tissue were observed in 24 months. However, the degree of change in the experimental groups was significantly larger than that of control groups. In contract, the myelin body in intercalated discs was observed in 24 months of experimental groups.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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• pp.590-600
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• 2003

The matrix metalloproteinases (MMPs) are a family of enzymes responsible for degrading connective tissue. MMPs catalyze the breakdown of collagen from the extracellular matrix, leading to wrinkle formation and accelerated skin aging. Furthermore, ultraviolet irradiation causes increased expression of certain MMPs. In the extracellular matrix turnover, MMPs are interacting with endogenous regulators named tissue inhibitors of metalloproteinases (TIMPs). Using peptide substrate assays, it has been demonstrated that TIMP-MMP complexes interact highly specifically with $K_{i}$ values of 10$^{-9}$ -10$^{-16}$ M. Therefore applications for TIMP as inhibitor of collagen degradation are suggested for cosmetic anti-aging products to prevent wrinkle formation and loss of elasticity. To date four TIMP proteins (TIMP-1, TIMP-2, TIMP-3 and TIMP-4) have been identified which show a high degree in sequence similarity. The production of human TIMP-2, a 194-residue nonglycosylated protein, was performed by fed-batch culture of Escherichia coli. TIMP-2 accumulated in the bacterial cells in an insoluble form as inclusion bodies. The inclusion bodies were solubilized and the protein refolded to yield the native TIMP-2 in the active form. The integrity of the protein was confirmed by mass analysis, Edman sequencing and gel shift experiments with authentic samples. The inhibitory activity of the refolded and purified TIMP-2 was demonstrated with MMP-1 and MMP-2 assays using synthetic fluorogenic peptide substrates.s.

• 치과방사선
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• 제28권1호
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• pp.235-243
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• 1998

Cementifying fibroma is an odontogenic tumor of periodontal ligament origin, consisting of a proliferation of fibrous tissue that forms cementum. Cemento-ossifying fibroma, cementifying fibroma and ossifying fibroma are difficult to distinguish on clinical and radiographic exmination, and on histopathology. However, when the calcified product is represented by ovoid or curvilinear deposits, the lesion is often referred to as cementifying fibroma. Cementifying fibromas of the jaws are well-circumscribed, generally slow-growing lesions. Although most lesions appear to be limited to the tooth-bearing areas, a few have extended into the angle-ramus area or encroached on the maxillary sinus. Radiographically, the cementifying fibroma could present as a radiolucent, radiopaque or mixed density lesion, depending on the degree of maturity. We have observed two cases of cementifying fibroma occurred in the left maxillary premolar-molar area of 38-year-old woman and 35-year old man. We obtained that two cases were shown the followed results; 1. Clinically, main clinical symptom was facial swelling and pain at palpation 2. Radiographically, well-circumscribed radiolucent lesion and radiolucent lesion with radiopaqu e foci were seen on the left maxillary premolar-molar areas. Loss of lamina dura and root resorption or divergency were also seen. 3. Histopathologically, many cementum-like calcifications were observed in the hypercellular connective tissue.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제23권2호
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• pp.124-136
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• 2001

Heat shock protein (HSP) expression is unregulated in tumor cells and, HSP expression is likely marker of the malignant potential of oral epithelial lesion. Furthermore, the 70kDa HSP is implicated in the degree of tumor differentiation, the rate of tumor proliferation and the magnitude of the anti-tumor Immune response. Accordingly, the distribution and intensity of HSP70 and HSP47 expression was assessed in the DMBA induced oral carcinogenesis in hamster. Golden Syrian hamsters which were 3 months-age and $90{\sim}120g$ were collected. 9,10-dimethyl -1,2-benzanthracene (DMBA) in a 0.5% solution in mineral oil was painted on the buccal pouch mucosa 3 times per week in the study group. In each control and experimental groups of 6, 8, 10, 12, 14, 16, 18, 20 weeks, specimen were sectioned for immunohistochemical study with anti-HSP47 and anti-HSP70 antibody. The following results were obtained. 1. HSP47 positive cells were race or negative of normal oral mucosa, increased mildly in basal and suprabasal basal layer, and spinous cell layer after experimental 6 weeks (dysplastic or CIS stage). In CIS stage, HSP47 expression is prominent in dysplastic free or normal adjacent epithelium. 2. HSP47 positive cells in connective tissue were mainly inflammatory cells, which is gradually increased from control to precancerous and cancer stage. But HSP47 positive cells after 14 weeks were decreased, especially normal and cancer adjacent epithelium. 3. The positive staining cells of HSP70 in control, dysplastic, and CIS stage were not seen. But they were mild findings in basal layer and moderate findings in spinous layer after experimental 14 weeks (cancer stage). 4. HSP70 positive cells were increased in precancerous and cancer stage than control group in connective tissue. After experimental 16 weeks, we could not find the HSP expression in cancer cells according to cancer differentiation or cancer stage. It is concluded that HSP70 or HSP47 expression is not a definitive marker of oral malignancy or malignant potential. However, with further development, HSP immunoreactivity may be valuable as an adjunct to conventional histology for assessing the malignant potential of oral mucosal lesions.