흰쥐 좌골신경에 신경파괴제 주입 후 초래되는 하지 운동과 신경조직학적 변화

전재규(Jae Kyu Cheun),송선옥(Sun Ok Song),정성원(Sung Won Jung) 대한통증학회 2001 The Korean Journal of Pain Vol.14 No.1

N/A Background: This study was undertaken to observe the functional changes of the hind limb and histopathological changes in the sciatic nerve after an injection of alcohol or phenol, which are commonly used neurolytic agents, highlighting the time of recovery. Methods: Forty-eight Sprague-Dawley rats weighing 200-300g were used for the experiment. Histopathological changes under the electron microscope, were observed in the distal part of the sciatic nerve, into which O. 1 ml of alcohol or phenol was injected. This was severed in 3 rats of each group at 10 minutes, 1 hour, 24 hours, 3 days, 1, 2, 4 and 6 weeks later. The functional changes in the hind limbs were observed for 6 weeks by noting their walking pattern. Results: Following the injection of alcohol or phenol into the right sciatic nerve, the right hind limb showed a severe pronounced motor weakness and obvious gait changes. About 2 weeks later, gradual improvement of gait changes began, and after 6 weeks, the motor weakness and gait changes were no longer perceptible in both groups. The findings of any histopathological change were similar in both alcohol or phenol groups. At 10 minutes after injection, destructive lesions were confined to the immyelinated fibers and the myelin sheath of small the myelinated fibers. On the 3rd day and at 1 week, pathologic changes in axonal fibers and Schwann cells were in being phagocytized in spite of myelin restitution. From 2 to 4 weeks, axonal regeneration and remyelination appeared at the same time a myelin disintegration and axonolysis. At 6 weeks, neural regeneration was similar to that of the contralateral control group. Conclusions: These results suggest that functional and histopathological changes, after injection of neurolytics into the peripheral nerves, are quite similar in both alcohol and phenol groups. The progression of functional and histopathological changes become more obvious according to the time interval following the injection. Consequently, side effects that develop following the use of alcohol or phenol may begin to improve around the time that nerve regeneration occurs, i.e., two to four weeks later.

Rat의 복강내에 투여한 5-fluorouracil-polyglycolic acid 제형이 장기에 미치는 영향에 관한 연구

강대영,송규상,최정목,노승무,정경수,오정연,김진향,양준묵,최선웅,이진호,조준식,민병무,김용백,김창식,박근성,김승영,김학용,인현빈 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

For more effective intraperitoneal chemotherapy, the authers made 5-fluorouracil-polyglycolic acid composite disks(FU-PGA disks) with 5-fluorouracil and polyglycolic acid, a biodegradable polymer. We inserted the FU-PGA disk into the peritoneal cavites of Sprague-Dawley male rats, the control and three experimental groups; one FU-PGA disk insert group(300mg/kg), two FU-PGA disk insert group(600mg/kg), and three FU-PGA disk insert group(900mg/kg). The control group received a similar number of PGA disk inserts. A pharmacokinetic study was performed to measure the 5-fluorouracil concentration in the peritoneal fluid, blood, and tissues(liver, kidney and heart) at 24 hours, 72hours and 168 hours after insertion of the FU-PGA disk. Light and electron microscopic studies were done. The results were as follows: 1) The number of white blood cells and platelets decreased after FU-PGA insertion. The degree was proportional to the duration and amounts inserted. The change in the number of red blood cells varied slightly. 2) Light microscopically, slight changes were noted at 168 hours in the 3 disk insert group (900mg/kg). Mild fatty change and hepatocyte degeneration around the central veins of the liver were noted, with vacuolar degeneration in the proximal convoluted tubules of the kidney. 3) Electron microscopically,the liver showed focal increases of lipid droplets in the hepatocytes, and irregular nuclear membrane with focal nucleolar segregation of the fibrillar and granular elements. Also the double membranous structure of the hepatocytes and Kupffer cells was widened with bleb formation. The kidney showed wide separation of the nuclear double membrane in the proximal convoluted tubular cells and mesangial cells, with vacuolation and myelin figure formation in the mitochondria of the proximal convoluted tubular cells, at 72 hours and 168 hours in the 2 to 3 FU-PGA insert groups. The heart showed focal loss of cristae,vacuolation and myelin figure formation in the mitochondria of the 2 to 3 FU-PGA insert groups. In conclusion, despite the large amont of FU-PGA inserted, the histopathological changes in the liver, kidney and heart were slight, and consonant with the very low amount of 5-fluorouracil concentrations detected in the liver, kidney and heart. The above results suggest that the FU-PGA composite can serve as a new device for releasing drugs in a controlled manner and easily targeted to intraperitoneal organs. This device can improve the efficacy of intraperitoneal chemotherapy for gastric cancer.

견의 Toxoplasmosis에 관한 연구

이청산,곽학구,박경재,장환,Lee, Cheong-San,Kwak, Hak-Koo,Park, Kyung-Jae,Jang, Hwan 한국동물위생학회 1998 韓國家畜衛生學會誌 Vol.21 No.1

This study was carried out to investigate the prevalence of antibody against Toxoplasma gondii in the dog by Latex agglutination test and Indirect fluorescent antibody test. Two month-old dogs were infected intraperitoneally with T gondii to observe histopathological and immunohisto-chemical changes. Results obtained through this experiment were summarized as follows ; 1. Among the serum samples of 163 heads of the dog, 10 samples(6.1%) were positive. 2. In the sex, 6 heads (7.1%) out of 84 female dogs and 4 heads(5.1%) out of 79 male dogs were positive. However, there were no significant differences between the male and female. 3. Overall proportion of agreement between indirect fluorescent antibody and Latex agglutination test in 163 sera of dogs was 97.5%. 4. When 2 month-old dogs were infected intraperitoneally with T gondii, main clinical signs were intermittent fever, dyspnea, diarrhea. In general, the infected dogs recovered closely on the 11th day of post-inoculation. 5. At necropsy, petechial and ecchymotic hemorrages and swelling in small intestine, lung, spleen, liver and kidney were observed. 6. In histopathological observation, interstitial pneumonia, hyperemia and hemorrhages in lung were observed. Focal necrosis of hepatocytes, the neutrophil and basophil in the renal tubular epithelium were observed. 7. By immunohistochemical staining using Vectorstain ABC kit, the positive cells were recognized in the lung and the liver. 8. By indirect fluorescent antibody test, the Toxoplasma antibodies in the infected dogs were detected on the 15th day of postinoculation.

견(犬)의 Toxoplasmosis에 관한 연구

장환 ( Hwan Jang ),박경재 ( Kyung Jae Park ),이청산 ( Cheong San Lee ),곽학구 ( Hak Koo Kwak ) 한국동물위생학회 1998 한국동물위생학회지 (KOJVS) Vol.21 No.1

This study was carried out to investigate the prevalence of antibody against Toxoplasma gondii in the dog by Latex agglutination test and Indirect fluorescent antibody test. Two month-old dogs were infected intraperitoneally with T gondii to observe histopathological and immunohisto-chemical changes. Results obtained through this experiment were summarized as follows; 1. Among the serum samples of 163 heads of the dog, 10 samples(6.1%) were positive. 2. In the sex, 6 heads (7.1%) out of 84 female dogs and 4 heads(5.1%) out of 79 male dogs were positive. However, there were no significant differences between the male and female. 3. Overall proportion of agreement between indirect fluorescent antibody and Latex agglutination test in 163 sera of dogs was 97.5%. 4. When 2 month-old dogs were infected intraperitoneally with T gondii, main clinical signs were intermittent fever, dyspnea, diarrhea. In general, the infected dogs recovered closely on the 11th day of post-inoculation. 5. At necropsy, petechial and ecchymotic hemorrages and swelling in small intestine, lung, spleen, liver and kidney were observed. 6. In histopathological observation, interstitial pneumonia, hyperemia and hemorrhages in lung were observed. Focal necrosis of hepatocytes, the neutrophil and basophil in the renal tubular epithelium were observed. 7. By immunohistochemical staining using Vectorstain ABC kit, the positive cells were recognized in the lung and the liver. 8. By indirect fluorescent antibody test, the Toxoplasma antibodies in the infected dogs were detected on the 15th day of postinoculation.

새로운 국내 분리 토끼출혈병바이러스(RHDVa)를 감염시킨 토끼에서의 경시적인 병리학적 변화와 조직 내 바이러스 항원 분포

박중원,전지은,양동군,박은정,김한,이명헌,황의경,이중복,우계형,Park, Jung-Won,Chun, Ji-Eun,Yang, Dong-Kun,Bak, Eun-Jung,Kim, Han,Lee, Myeong-Heon,Hwang, Eui-Kyung,Lee, Chung-Bok,Woo, Gye-Hyeong 대한수의학회 2012 大韓獸醫學會誌 Vol.52 No.2

Rabbit hemorrhagic disease is a highly acute and fatal viral disease caused by rabbit hemorrhagic disease virus (RHDV). Since first outbreak in Korea 1987, RHDV has been continually affected in the country, but the pattern of outbreak seem to be changed. In this study, to understand the pathogenesis of the new RHDVa serotype, we therefore carried out to inoculate RHDVa to rabbits, and to examine the sequential histopathologic changes and viral distribution. Macroscopically, various sized dark red or white spots or appearance were observed in the liver, lung, kidney uterus and ureter. In euhanized rabbits, significant pathologic findings such as infiltration of heterophils and mononuclear cells were observed at 24 hours after inoculation (HAI), and these were sequentially extended periportal to centrilobular area. However, in dead rabbits, severe hepatic degeneration and/or necrosis with relatively weak inflammatory responses were observed. RHDV antigens began to detect in liver, spleen, and lung from 12 HAI by PCR. Immunohistochemically, RHDV positive cells were seen in only liver from 24 HAI, and the degree of immunogen reactivity was stronger in dead rabbits than in euthanized ones. In conclusion, RHDVa caused the subacute or chronic infection accompanying low mortality and moderate to severe inflammatory reaction in rabbits, suggesting the possibility that RHD could become endemic.

Helicobacter pylori에 의한 만성위염의 항균요법 후 위 십이지장점막의 병리조직학적 변화

최명범,김윤옥,조윤경,신선경,김송자,우향옥,김미령,김승한,윤희상 大韓消化器病學會 1997 大韓消化器病學會誌 Vol.29 No.1

Helicobacter pylori에 의한 만성위염의 항균요법 후 위십이지장점막의 병리조직학적 변화

최명범(Myoung Bum Choi),김윤옥(Yoon Ok Kim),조윤경(Yoon Kyung Cho),신선경(Sun Kyeong Sin),김송자(Song Ja Kim),우향옥(Hyang Ok Woo),김미령(Mi Ryeung Kim),김승환(Seung Hwan Kim),윤희상(Hee Shang Youn),고경혁(Gyung Hyuck Ko),박철근(Cheo 대한소화기학회 1997 대한소화기학회지 Vol.29 No.1

N/A Background; We examined the histopathological changes of the gastroduodenal mucosa after chemotherapy against Helicobacter pylori to evaluate what happened to them, because most of patients with chronic gastritis who received the triple chemotberapy felt improvement of upper gastrointestinal symptoms in spite of its 45% clearance rate of Helicobacter pylori in our previous study. Methods; Gastric and duodenal mucosal biopsy specimens were obtained before and 2-4 weeks after the triple chemotherapy. Helicobacter pylori colonization was evaluated with urease test and histopatho]ogical examinations including hematoxy]in-eosin and Warthin-Starry silver staining. Histopathological grading of gastric and duodenal mucosa was done according to the Sydney Syste and Whitehead's criteria, respectively. Resu)ts; Decreasing pathological grades of Helicobacrer pylori density, gastric neutrophil infiltration and chronic inflammatory cell infiltration was observed in 100%, 100% and 57.6% of 26 Helicobacter pylori-cleared patients after chemotherapy, respectively. And we a]so observed the decreasing pathological grades of Helicobacter pylori density, gastric neutrophil infiltration and chronic inflammatory cell infiltration in 70.8%, 63.6% and 29.4% of 34 Helicobacter pylori-persisted patients after chemotherapy, respectively. The histopathological changes of neutrophil and chronic inflamrnatory cell infiltration after chemotherapy were correlated with the histopathological changes of Helicobacter pylori density. Chronic inflammatory cell infiltration of duodenal mucosa was decreased only in 8.6% of patients after chemotherapy. Conclusions; After chemotherapy, the histopathological grades of Helicobacter pylori density, neutrophil infiltration and chronic inflammatory cell infiltration of gastric mucosa were decreased in both Helicobacter pylori-cleared and persisted groups. (Korean J Gastroenterol 1997;29:41 - 52)

죽력 (Bambusae Caulis in Liquamen)의 투여량에 따른 생쥐의 항산화효소 활성과 간과 신장의 조직병리학적 변화

김정상,Kim, Jeong-Sang 한국현미경학회 2002 Applied microscopy Vol.32 No.4

죽력의 투여에 따른 생쥐 간세포의 항산화효소 활성변화와 간과 신장의 조직병리학적 변화에 미치는 영향을 통하여 치료약물로써 죽력의 안전성 확보에 기여하고자 본 연구를 수행하였다. 대조군은 생리식염수를 투여하였으며, 실험군은 죽력을 생리식염수에 5% (H1군), 10% (H2군), 20% (H3군)로 희석하여 0.2 ml씩 48시간 간격으로 28일 동안 구강 투여하였다. 대조군과 실험군의 간조직을 절취하여 SOD와 catalase의 활성변화를 측정하였으며, 간과 신장의 조직학적변화 및 미세구조적 변화를 관찰하였다. MnSOD의 활성은 대조군에 비하여 H1 (46%, P<0.05), H2 (40%, P<0.05), H3군 (34%, P<0.05)에서 증가하였다 (Fig. 1). CuZnSOD의 활성은 대조군에 비하여 H1군 (11%, P<0.05)에서는 증가하였으나, H3군 (13%, P<0.05)에서는 감소하였다. Catalase의 활성은 대조군에 비하여 H1 (39%, P<0.05), H2 (34%, P<0.05), H3군 (31%, P<0.05)에서 감소하였다. 간과 신장의 조직병리학적 관찰 결과, H3군에서 간세포의 팽창과 중심정맥 내피세포의 파괴현상이 뚜렷이 나타났으며, 신장의 곱슬세관 상피세포의 파괴현상이 뚜렷하였다. H2군의 간세포는 핵질이 매우 응축되어 있었으며, 사립체의 팽대현상이 현저하였다. H3군은 핵질의 전자밀도가 매우 낮게 나타났다. 사립체의 내강은 매우 팽대되어 있고 크리스테의 형태는 관찰되지 않으면서 기질의 전자밀도는 낮게 나타났다. H3군 근위곱슬소관의 원주상피세포는 핵의 괴사가 뚜렷하였으며, 세포질내에서 관찰되는 사립체들은 대부분 팽대되거나 파괴된 양상을 보여주었다. 이상의 연구 결과로 보아 죽력은 투여 농도에 따라 간세포의 항산화효소 활성의 변화와 간과 신장의 조직 병리학적 변화를 초래한다고 생각된다. This study was performed to investigate the effects of Bambusae Caulis in Liquamen (bamboo extract) on the changes of antioxidant enzymes and histopathological changes of liver and kidney in mice when administered in different dosages. The experimental groups were divided into four. For control group, 0.9% NaCl (0.2 ml/25 g B.W.) and for experimental groups, 5% (H1 group), 10% (H2 group), and 20%(H3 group) bamboo extract diluted with 0.9% NaCl, were administered (0.2 ml/25 g B.W.) respectively for 28 days at an interval of 48 hours. MnSOD activities were increased in H1 group (46%, P<0.05), H2 group (40%, P<0.05), and H3 group (34%, P<0.05) as compared to the control group. CuZnSOD activities were increased in H1 group (11%, P<0.05), but were decreased in H3 group (13%, P<0.05). The activities of catalase were decreased in H1 group (39%, P<0.05), H2 group (34%, P<0.05), and H3 group (31%, P<0.05) as compared to the control group. Histopathological observation revealed ballooned hepatocytes in the pericentral and periportal veins of H1 group. More ballooned and injured hepatocytes than in H1 group were observed in the H2 and H3 groups. Detachment of endothelial cells of the central vein was observed in the H2 and H3 groups. These results indicated that bamboo extract developed dose-dependent changes in antioxidant enzyme activities and developed histopathological changes of liver and kidney.

배합사료의 다양한 첨가제가 넙치 (Paralichthys olivaceus) 치어의 성장, 혈액 성상, 지방산 조성, 유전자 발현 및 조직 성상에 미치는 영향

김경덕,서주영,홍수희,김정호,변희국,김강웅,손맹현,이상민 한국수산과학회 2011 한국수산과학회지 Vol.44 No.2

This feeding experiment was conducted to investigate the effects of dietary inclusion of various additives on growth performance, hematological parameters, fatty acid composition, gene expression and histopathological changes in juvenile olive flounder (Paralichthys olivaceus). Eleven isonitrogenous (49% crude protein) and isolipidic (10% crude lipid) experimental diets were formulated: no additives (Con); 5% kelp meal (Ke); 10% krill meal (Kr); 1% garlic powder (Ga); 1% citrus meal (Ci); 3% onion powder (On); 1% ginger powder (Gi); 1% mugwort powder (Mu); 1% licorice powder (Li); 1% wasabi powder (Wa); and a mixture (Mix) of these additives. Three replicate groups of juvenile flounder (average weight of 8.5 g) were fed one of the experimental diets to visual satiety twice a day for 15 weeks. The dietary inclusion of additives did not affect survival, weight gain, specific growth rate feed efficiency, daily feed intake, daily protein intake, protein efficiency ratio, hepatosomatic index and visceralsomatic index of the fish. Plasma triglyceride levels were significantly lower in fish fed the Ke, Ga, On, Gi, Mu, Li, and Mix diets than in fish fed the control diet. Plasma glucose, glutamic oxaloacetic transaminase and total cholesterol did not differ among dietary treatments. No significant difference was observed in fatty acid composition and lipid content of the dorsal muscle in fish fed the experimental diets. Myosin gene expression did not differ significantly among treatments after 5 weeks but was significantly lower in fish fed the Kr, Ci, Li, and Mix diets than in control group after 15 weeks. Histopathological analysis showed mild gill hyperplasia and mild necrosis of liver parenchymal cells in several individuals of each experimental group. These conditions were also observed in the control group and were not thought to be related to the inclusion of feed additives. The present findings indicate that the dietary inclusion of additives did not affect growth performance, fatty acid composition, gene expression, and histopathological changes in juvenile flounder. However, plasma triglyceride content may be reduced by supplementation with 5% kelp meal, 3% onion powder, 1% garlic powder, 1% ginger powder, 1% mugwort powder, and the additive mixture.

Histopathological Evaluation of the Efficacy for Plant-produced E2 Protein Vaccine against Classical Swine Fever Virus (CSFV) in Piglets

Sun-Young Kim,Bo-Kyoung Jung,Gyu-Nam Park,김혜란,Dong-Jun An,Eun-Ju Shon,장경수 대한미생물학회 2019 Journal of Bacteriology and Virology Vol.49 No.3

Classical swine fever (CSF), previously known as hog cholera, remains one of the most important swine-related contagious diseases worldwide. In order to eradicate classical swine fever virus (CSFV), it is commonly used in LOM-850 strain as a live attenuated CSF vaccine. However, there are symptoms of vaccination, such as the depression of feed intake, and difficulty of differentiation between infected and vaccinated hosts is impossible based on the antibodies induced. Nicotiana benthamiana were considered as an alternative to the production of recombinant vaccines on account of higher yields and levels of soluble protein than other models and crops in protein recombinant products. This study was conducted to evaluate histopathological validation of the plant-produced E2 fusion protein (ppE2) in piglets. The piglets were challenged by an injection of YC11WB strain in 7 days, 11 days and 14 days after one shot of the vaccination. The histopathological examination indicated that ppE2 can protect against lethal CSFV challenge at least 11 days of vaccination in piglets. These data suggest that the ppE2 can be an effective vaccine against CSFV in piglets.