• 폴리머
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• 제32권1호
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• pp.26-30
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• 2008

추간판 디스크의 섬유륜(AF)조직 재생에 적합한 다양한 담체를 평가하기 위해 천연재료인 소장점막하조직(SIS)과 탈미네랄화된 골분(DBP)을 폴리(락타이드-글리콜라이드) 공중합체(PLGA)와 혼합하여 담체(PLGA/SIS, PLGA/DBP, PLGA/SIS/DBP)를 제조하였으며, PLGA담체, PGA 메쉬, SIS 스폰지와 비교하였다. 제조된 담체의 압축강도 및 AF 세포를 담체에 파종하여 콜라겐 양과 DNA량을 측정하였으며, 이를 누드마우스 피하에 이식 후 적출하여 육안관찰과 조직학적인 평가를 수행하였다. 압축강도 측정에서 PLGA와 유사하게 PLGA/SIS, PLGA/DBP 에서도 충분한 강도를 나타내었다. DNA 증가량에 따른 콜라겐 양은 PLGA/SIS 에서 가장 높게 나타났고, 면역화학 염색을 통해 PLGA/SIS, PLGA/SIS/DBP 에서 글라이코스아미노글라이칸과 콜라겐 발현량이 높음을 확인하였다.

• Journal of Oral Medicine and Pain
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• 제19권1호
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• pp.33-43
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• 1994

The purpose of this paper was to observe the influence of Ga-As semiconductor-low power generating laser on she appearance and actions of tenascin, extracellular matrix, as healing process of intentional wound on the experimental animals is taking place. 35 rabbits were divided into control and experimental group. ; and on each, 3mm-long and 2mm-deep, surgical wounds were created on buccal oral mucosa and thoracodorsal portion of skin. Ga-As laser was applied to the experimental group starting a day of the day the wounds were created , the laser was applied for 5 minutes every other day. Tissue samples were taken after the 2, 4, 7, 10, and 14 days after wound formation. Then tile healing process of experimental and control groups were observed and compared, using light microscope. Afterwards, the samples were immunohistochemical stained and again observed tenascin by quantitative measuring. The following results were obtained : 1. Tenascin was observed prevalently on epithelial cells, border area of dermis, and interstitial matrix between connective tissue layers in both experimental and control groups. 2. In oral mucosa, the experimental group showed significant increase in the appearance of tenascin after 4 days compared to the control group, but after 10 days, it decreased to a point which is even less than the control group. 3. In the skin samples, the pattern of appearance of tenascin was the same in both groups, but there was some difference concerning when the peak period was shown, In the experimental group, the peak period of tenascin expression was the 7 days after wound formation in epithelium and connective tissue. In the control group, the peak period was 10 days after. 4. In both the experimental and control groups, tenascin first appeared in the epithelium near the wound area and submucosa, and then spread on the underlying connective tissue. In conclusion, appearance of tenascin is closely related to regeneration of epithelium and development of granulation tissue : therefore, low power laser, which fastnes appearance of tenascin, is sure to faciltate healing process of oral mucosa.

• 대한의용생체공학회:의공학회지
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• 제27권2호
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• pp.53-58
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• 2006

In this study, transverse relaxation time (T2) measurement and the evaluation of the characteristics of the spectral peak related to stomach tissue metabolites were performed using ex vivo proton magnetic resonance spectroscopic imaging (MRSI) at 1.5-T MRI/S instruments. Thirty-two gastric tissues resected from 12 patients during gastric cancer surgery, of which 19 were normal tissue and 13 were cancerous tissue, were used to measure the $T_2$ of the magnetic resonance spectroscopy (MRS) peaks. The volume of interest data results from the MRSI measurements were extracted from the proper muscle (MUS) layer and the composite mucosa/submucosa (MC/SMC) layer and were statistically analyzed. MR spectra were acquired using the chemical shift imaging (CSI) point resolved spectroscopy (CSI-PRESS) technique with the parameters of pulse repetition time (TR) and echo times (TE) TR/(TE1,TE2)=1500 msec/(35 msec, 144 msec), matrix $size=24{\times}24$, NA=1, and voxel $size=2.2{\times}2.2{\times}4mm^3$. In conclusion, the measured $T_2$ of the metabolite peaks, such as choline (3.21ppm) and lipid (1.33ppm), were significantly decreased (p<0.01 and p<0.05, respectively) in the cancerous stomach tissue.

• 한방안이비인후피부과학회지
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• 제21권1호
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• pp.16-25
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• 2008

Background & Objectives : Rhinitis is an inflammation of nasal mucosa. The major symtoms are watery rhinorrhea, sneezing, itchy nose, and nasal obstruction. Allergic rhinitis is an immune reaction by allergen. So, we aimed to determine therapeutic effects of Acorus gramineus by observing changes in IL-4, $IFN-{\gamma}$ and the nasal mucosal tissue. Materials and Methods : Fifteen BALC/c mice were divided into three groups : m group(which ate low concentrated herbal medicine ), M group(which ate high concentrated herbal medicine) and control group. Control and experimental group were induced allergic rhinitis by Ovalbumin as the method of Levin and Vaz. Experimental group was orally administered the Acorus gramineus extract for 28days. We observed changes in IL-4, $IFN-{\gamma}$ and trans aminase(AST, ALT) in blood and nasal mucosa and submucosa. Results : There were no significant changes statistically in IL-4 and $IFN-{\gamma}$ in blood(p<0.05). And there were no hepatotoxicity with Acorus gramineus extract. Histologically, almost no inflammatory response in treatment group(m,M) against that there were inflammatory response(increased goblet cells, dilated vessels, edema of bowman's glands and injured olfactory hairs) in control group. Conclusion : According to above results, it is supposed that Acorus gramineus has no immunological effects on allergic rhinitis.

• 한방안이비인후피부과학회지
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• 제19권3호통권31호
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• pp.75-89
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• 2006

Background & Objectives : Rhinitis is an inflammation of nasal mucosa and the symtoms are watery rhinorrhea, sneezing, itchy nose, and nasal obstruction. Rhinitis is classified into allergic rhinitis and nonallergic. Allergic rhinitis is an immune reaction by allergen, and vasomotor rhinitis which is nonallergic noninfectious hypersensitive reaction. The incidence of allergic rhinitis has increased and the rate of vasomotor rhinitis is high. However there have been no studies about vasomotor rhinitis compared with allergic rhinitis. And there have been no studies so far performed on the effect of Tongkwansan. Therefore this study is aimed to find out the effects of Tongkwansan on allergic rhinitis and vasomotor rhinitis. Materials and Methods : Fifteen BALC/c mouses divided into three groups : normal group, control group and sample group. To induce the allergic rhinitis in control group and sample group, mouses were sensitized intrapertioneally 0.1 % ovalvumin solution three times at intervals of 1 week. Then intranasal sensitization was performed by diffusing 0.1 % ovalbumin solution 3 times at intervals of 2 days. After that time, mouses in the sample group were oral and administration treated by Tongkwansan for 28 days. We observed changes in nasal mucosa and submucosa; also changes in the segment of leucocyte, erythrocyte, neutrophil, lymphocyte, monocyte, eosinophil, IL-4 and $IFN-{\gamma}$ in blood. We used the statistical methods of ANOVA test(p<0.05). Results : There were no significant changes statistically in leucocyte, erythrocyte, neutrophil, lymphocytem, monocyte, eosinophil, IL-4 and $IFN-{\gamma}$ in blood(p<0.05). Hypertrophy of epithelium in nasal mucosa and expansion of glandular cells in nasal submucosa were decreased in treated group when compared with control group. Conclusion : According to above results, it is supposed that Tongkwansan has significant effects on vasomotor rhinitis which is nonallergic and noninfectious.

• 대한치과의사협회지
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• 제18권10호통권137호
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• pp.853-857
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• 1980

The auther embedded the clinically differently used direct resins to the oral submucosa of the rabbits, and compared the tissue reactions to the direct resins with that to the indirect resins. The results were as follows: 1. Direct resins showed more lympocytes infiltration than indirect resins at the early stage of the embedding, but the same degree of the appearance of lympocytes infiltration as indirect resin at the late stage of the embedding. And the formation of fibrosis around the embedding showed the irregular finidng. 2. Fibrosis of direct resin showed the tendency to be finer than indirect resin at the early stage of the embedding, but direct resin formed the similar fibers capsule to that of indirect resin at the late stage of the embedding.

• Journal of Chest Surgery
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• 제38권7호
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• pp.461-467
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• 2005

기관 또는 기관지의 이식이나 기관문합술 후 그리고 폐절제술 후 기관지의 봉합면에 빠른 재혈관화를 통해 감염이나 허혈성 괴사를 막기위해 흉막, 심외막, 심외지방, 횡격막, 장막, 늑간 근육 등을 이용하여 보강해 주는 경우가 많다. 이 연구는 실험동물에서 자가기관을 흉막, 장막 및 횡경막에 이식했을 때 생존에 미치는 영향을 알아보고자 하였다. 대상 및 방법 : 실험동물로 무게는 $250\~350g$ 정도의 Sprague-Dawley rats가 사용되었다. 장막, 횡격막, 흉막 세 군으로 나누어서 각 군별로 5마리씩 실험하였다. 복막 내 마취 후 기관 삽관을 시행하였고 기관을 노출시켜 세마디의 기관이식편을 잘라내었다 잘라낸 기관을 장막, 횡격막, 흉막에 각각 이식하였고 2주 후 쥐를 희생시켜 얻은 조직으로 병리조직학적 검사를 하였다. 병리조직학적으로 절단기관편의 생존능력을 비교하기 위하여 각각의 상피조직, 점막하조직, 연골조직의 괴사정도를 점수화하여($0\~3$점) 그 결과의 평균값을 표시하였다. 결과 : 병리 조직학적 검사상 장막군이 가장 좋은 보존 상태를 보였다. 괴사 점수는 흉막이식군에서 상피층서 $2.17\pm0.983$, 점막하층 $1.67\pm0.516$, 연골층 $2.17\pm0.753$으로 나타났고 장막이식군의 경우 각각 1.00\pm0.00,\;1.60\pm0.548,\;1.8\m0.447$, 횡격막이식군은 $1.40\pm0.894,\;2.40\pm0.547,\;2.2\pm0.447$으로 관찰되었다. 전체 괴사 점수는 흉막이식군에서 $6.00\pm1.789$, 장막이식군에서 $4.40\pm0.894$, 횡격막이식군에서 $6.00\pm1.414$보였다. 걸론: 세 그룹간의 비교시 통계적 유의성은 없었으나 장막에 이식한 기관에서 가장 낮은 괴사점수가 나와 장막이 횡격막이나 흉막보다 기간 봉합면을 보호하고 신혈관 생성에 더 좋은 역할을 하는 경향을 보였다.

• 한국수정란이식학회지
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• 제32권4호
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• pp.325-329
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• 2017

A 2-year-old female Maltese dog was admitted with a history of pyometra and resulting peritonitis and septicemia. Uterine specimen sampled by ovariohysterectomy was processed routinely for histopathological observation. Grossly, the uterine mucosa was covered with necrotic debris and on the cut surface, lesion extended into the uterine wall. Microscopically, severe necrosis was observed throughout thickened mucosa, submucosa, and wall of uterus. Tumorous lesions composed of anaplastic cells with bizarre nuclei or tubular structures of cuboidal to short columnar cells were infrequently observed around the necrotic lesions and muscular layer far from necrotic areas. Immunohistochemically, central necrotic area with ambiguous cell and tissue structures, peri-necrotic tumor lesions, and muscular layer were strongly positive for cytokeratin. Since huge necrosis of adenocarcinoma lesions in this case made it difficult to diagnose, immunohistochemical results enable to diagnose as a severe necrotizing adenocarcinoma. Thus, histopathological and immunohistochemical findings in this case may serve as an important knowledge to diagnose uterine adenocarcinoma with huge necrosis in the veterinary field.

• 한국임상수의학회지
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• 제24권1호
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• pp.59-61
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• 2007

Eosinophilic cystitis (EC) is a rare inflammatory disorder in dogs. Although EC has been associated with various etiological factors, the precise cause of this disease remains unclear in human and animals. A 7-year-old female Yorkshire terrier was presented with 3-week-history of hematuria, dysuria, and suprapubic pain. A bladder mass in ventral surface and urinary calculi were noted on ultrasonography and gross findings. Biopsy sample was taken from the protruded mass of bladder for histopathologic examination. Hyperplastic transitional epithelium with focal ulceration covered the bladder mass. A large nodule of fibrous tissue that contained fibrocytes, fibroblasts, Iymphocytes, plasma cells, macrophages, numerous eosinophils, and abundant blood vessels was occupied in lamina propria and submucosa of bladder mass. Based on the clinical, gross, and histopathologic examinations, this case was diagnosed as EC in a dog. In our knowledge, this is the first report of an eosinophilic cystitis in dog in Korea.

• The Korean Journal of Physiology and Pharmacology
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• 제14권5호
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• pp.317-324
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• 2010

We elucidated the distribution of interstitial cells of Cajal (ICC) in human stomach, using cryosection and $c-Kit$ immunohistochemistry to identify $c-Kit$ positive ICC. Before $c-Kit$ staining, we routinely used hematoxylin and eosin (HE) staining to identify every structure of human stomach, from mucosa to longitudinal muscle. HE staining revealed that the fundus greater curvature (GC) had prominent oblique muscle layer, and $c-Kit$ immunostaining $c-Kit$ positive ICC cells were found to have typical morphology of dense fusiform cell body with multiple processes protruding from the central cell body. In particular, we could observe dense processes and ramifications of ICC in myenteric area and longitudinal muscle layer of corpus GC. Interestingly, $c-Kit$ positive ICC-like cells which had morphology very similar to ICC were found in gastric mucosa. We could not find any significant difference in the distribution of ICC between fundus and corpus, except for submucosa where the density of ICC was much higher in gastric fundus than corpus. Furthermore, there was no significant difference in the density of ICC between each area of fundus and corpus, except for muscularis mucosa. Finally, we also found similar distribution of ICC in normal and cancerous tissue obtained from a patient who underwent pancreotomy and gastrectomy. In conclusion, ICC was found ubiquitously in human stomach and the density of ICC was significantly lower in the muscularis mucosa of both fundus/corpus and higher in the submucosa of gastric fundus than corpus.