The effect of intravesical formalin instillation as a therapeutic modality for intractable bladder hemorrhage is well known. And despite clear evidence of therapeutic efficacy of intravesical cytotoxic drugs and/or BCG immunotherapy, there have been substantial recurrences during followup after transurethral resection for superficial bladder tumor. If formalin injected at the bed of superficial bladder tumor is able to coagulate and necrotize the tumor, it will be greatly helpful to the patients With recurrent bladder tumor developed during followup. Since this technique is applicable on outpatient basis, an economical as well as a psychological burden of the patients can be reduced considerably. The purpose of this study is to evaluate the effect of submucosal formalin injection on rat bladder wall, 36 healthy adult male Sprague-Dawley rats (weighing 350gm in average) were divided into 3 groups: In Group I (control group), 0.01ml of normal saline was injected submucosally at the left posterolateral wall of the bladder opened under intraperitoneal Nembutal anesthesia ; In Group II and III, 0.01 ml of 10% and 4% formalin, respectively, were administered at the same site as in the Group I, two rats in each group were sacrificed at day 1, 2, and 3, and week 1, 2 and 4 after injection, respectively. Gross and microscopic examination of the cystectomized specimen were done in each group. In the Group II, bladder stones were formed at week I, and in both the Group I and III, stones were seen at week 2 post injection. There was no significant difference III histologic findings of the bladder between the group II and III. Mucosal ulcer and/or prominent mucosal disruption was observed at 24 hours after injection in both Group II and III. Epithelial regeneration began at day 2, and was marked at day 3, and epithelial lining was almost normalized one week after injection. Subepithelial edema, telangiectasia and inflammatory reaction were prominent at 24 hours post formalin injection. Subepithelial edema persisted in moderate degree for 1 week. Telangiectasia and inflammatory reaction were noted for 4 weeks. Mild degree of these findings also appeared In the control group. Fibroblastic proliferation appeared at day 2 and persisted in moderate degree for 4 weeks. There has been no mortality or bladder perforation. These results suggest that clinical application of this technique is feasible for the selected cases of recurrent, solitary superficial bladder tumor. However, optimal dosage of formalin in relation to the size of the lesion remains to be investigated.
Background: This study was designed to evaluate the efficacy of a mixture of hyaluronic acid and sodium carboxymethyl cellulose ($Guardix-sol^{(R)}$) on experimental pericardial adhesion. Material and Method: Thirty rats were divided into 2 groups of 15 rats each and pericardial mesothelial injury was induced during surgery by abrasion. In the control group, blood and normal saline were administered into pericardium; in the test group, blood and HA-CMC solution were administered. Pericardial adhesions were evaluated at 2 weeks (n=5), 4 weeks (n=5), and 6 weeks (n=5) after surgery. The severity of adhesions was graded by macroscopic examination, and the adhesion tissue thickness was analyzed microscopically with Masson trichrome stain and an image processing program. Result: The test group had significantly lower macroscopic adhesion scores ($2.9{\pm}0.6$ : $3.9{\pm}0.4$, p<0.000) compared with the control group. For microscopic adhesion tissue thickness, the test group had lower scores compared with the control group, but this difference was not statistically significant ($91.73{\pm}49.91$ : $117.67{\pm}46.4$, p=0.106). Conclusion: We conclude that an HA-CMC solution ($Guardix-sol^{(R)}$) reduces the formation of pericardial adhesions in this animal model.
Objectives : This study was designed to evaluate objectively the efficacy of bee-venom acupuncture on Central post-stroke patients. Methods : After screening, 25 patients recruited with eligible criteria. Among them 1 dropped out in treatment group, 4 in control group. We applied bee-venom acupuncture 6 points of body($LI_{15}$, $GB_{21}$, $LI_{11}$, $GB_{31}$, $ST_{36}$, $GB_{39}$) 2 times a week for 3 weeks for treatment group, and normal saline for control group in the same way. After 3 weeks treatment and 2 weeks follow up we measured VAS, categorial rating scale as a pain assessment also MBI, Modified Rankin Scale as a stroke recovery. Results : 1. Treatment group showed significant difference in VAS, categorial rating scale after treatment and 2 weeks follow up, compared with baseline. The control group showed significant difference between baseline and after treatment But the 2 weeks follow up, there is no significant difference compared with baseline. Also there's no significant difference in categorial rating scale. 2. MBI showed significant difference in treatment group between baseline and after treatment, but the control group did not have any difference. There's no significant difference in Modified Rankin Scale for treatment group and control group. 3. There's no significant difference between control group and treatment group. This is because of the small sample size in the study, Thus it seems to reflect individual difference strongly. Conclusions : There are positive effect on CPSP patients in pain and stroke recovery treating with bee-venom acupuncture than control group.
Saline conditions invoke oxidative stress attributed to the overproduction of reactive oxygen species (ROS). Changes in quantum efficiency and antioxidative enzyme activity upon salt treatment were examined in a salt-tolerant plant, Atriplex gmelini, to test the hypothesis that salt tolerance of A. gmelini is due to the increased activity of antioxidative enzymes. A. gmelini showed optimum growth at 100 mM NaCl producing 116% of the shoot dry weight over control plants in 0 mM NaCl treatment. Healthy growth persisted up to 300 mM NaCl treatment maintaining normal internal water content and dry weight. No photochemical stress or damages on antioxidative defense system was obvious in plants of 2 and 4 day salt treatment which was indicated by increased quantum efficiency (Fv/Fm value), decreased stress index (Fo/Fm value), and increased activity of antioxidative enzymes such as SOD, APX, GR. However, the plants treated with 400 mM NaCl showed decrease in growth and in antioxidative enzyme activity although the enzyme activity was still higher than that of the 0 mM NaCl treated plants (l31%, 114%, and 134% of the SOD, APX, and GR activity, respectively). Interestingly, another important antioridative enzyme that scavenges H₂O₂ in plant cells, CAT, showed rapid decrease in its activity as salt concentration increased; 38%, 22%, 15% of the 0 mM NaCl treated plants at 200, 300, 400 mM NaCl treatments, respectively. It appears that the enzymes in ascorbate-glutathione cycle such as APX and GR play the major roles in scavenging ROS produced by salt stress in A. gmelini. After 6 days of salt treatment, the damage in photochemical and antioxidative defense system was indicated by decreased Fv/Fm value and increased Fo/Fm value. A. gmelini appears to cope with short term salt treatment by enhanced activity of the antioxidative defense system, whereas long term stress invoke oxidative stress by increased ROS due to the damages in photochemical and antioxidative system.
Kim, Kyung-Ah;Jung, Chang-Young;Oh, Sang-Young;Yim, Hyeon-Woo;Lim, Young;Yun, Im-Goung;Roh, Young-Man
Tuberculosis and Respiratory Diseases
/
제39권2호
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pp.131-140
/
1992
In order to investigate the changes of hydroxyproline amount and pathologic finding in rat lung which were instilled the natural coal and free silica dust intratracheally, the subjects were divided into two groups as follows. The control group was only administered intratracheally 0.5 ml of normal saline, and the experimental groups were instilled at once the turbid solution containing 10 mg, 30 mg and 50 mg of natural coal and free silica dust each, subjects were sacrified at the 3rd and the 20th week each after the experiment. Hydroxyproline amount in the right upper lung was measured by Woessner method and HPLC (modified Dunphy) method, and the pathlogic finding of lung tissue were observed for hematoxylin-eosin staining, Bielschowski method and Masson's trichrome method. The results were as follows. 1) The wet lung weights of all experimental groups excluding in the groups instilled 10 mg and 30 mg of natural coal dust at 3rd week, were significantly increased (p<0.05) compared with control group. The weight in each free silica group was markedly increased (p<0.05) at 20th week compared with the same dose of natural coal dust group, while the weight in the same dose group of free silica dust was increased significantly at 20th week compared with at 3rd week. 2) The amount of hydroxyproline were significantly increased (p<0.05) in the natural coal and free silica groups at 20th week compared with the control groups, and in each experimental group instilled the same kind and dose of dust, its amount was markedly increased (p<0.05) at 20th week compared with at 3rd week. And also the hydroxyproline in 30 mg and 50 mg free silica groups increased markedly (p<0.05) at 20th week compared with the natural coal dust of the same dose. 3) The polymorphonuclear leukocytes, fibroblasts and macrophages in interstitium and alveolar space showed the increasing tendency in the free silica group more markedly than in the natural coal dust group. The exudate in alveolar space at 3rd week was disappeared at 20th week, and pneumoconiotic nodules observed microscopically in all experimental groups at 20th week, while the nodules apeared already at 3rd week in the 30 mg and 50 mg free silica dust groups. The significant increase of Hydroxyproline content in lung tissue and pneumoconiotic nodule formation in experimental groups found in this study indicate that the observation period, dust amount and kind of dust is important factors associated with pneumoconiosis. And these findings were generally more severe in free silica dust groups than in natural coal groups.
The benficial effects for perfusion in the preservation of free flaps have been controversial in the clinical and experimental field until now. This study was undertaken to observe the effect of UW solution. a recently developed. high molecular weight. organ perfusion solution. for protection of ischemic injury in normothermic free myocutaneous flaps. Forty rabbits were used in this sutdy. A 1x2x1cm sized gastrocnemius myocutaneous flap based on the feeding vessel from common femoral artery was made. The author set up the ischemic time for 12 hours in these flaps. The flap was washed out with normal saline(control grop, n=10), urokinase(comparative group I, n=10), UW solution before ischemic time(comparative group II, n=10) and UW solution before ischemic time and pentoxifylline before reperfusion(comparative group III, n=10). Afterthen, reperfusion was made for 12 hours. After this procedure, we checked the degree of ischemia and necrosis of myocutaneous flap by gross finding, electrical stimulation test of muscle, triphenyltetrazolium chloride staining and wet/dry weight ratio. The degree of necrosis of comparative group II and III were lesser than control and urokinase group in gross finding(p<0.05). In the electrical stimulation test of muscle, there was no statistical difference between control($1.76{\pm}1.01$) and urokinase($2.36{\pm}\1.02$) group however the muscular power of comparative group II($3.54{\pm}0.93$) and III($3.49{\pm}1.37gm/mm^2$) demonstrated significantly higher than control group(p<0.05). The ischemic findings were found in seven cases of control group and three cases of urokinase group but there were no ischemic findings in comparative group II and III in TIC stain(p<0.05). In the wet/dry weight ratio of flaps in order to evaluate the tissue edema. there was no statistical difference between control($4.55{\pm}0.29$) and III($3.75{\pm}0.48$) were scored significantly lesser than control and urokinase group (p<0.05). These results suggest that perfusion washout with UW solution improves the viability of normothermic free myocutaneous flap by inhibition of cellular swelling.
Protection against ischemia-reperfusion injury is crucial for successful transplantation of the lung. It has been known that nitric oxide has many favorable effects on the donor lungs but at the same time, has some potential side effects of cytotoxicity. In this regards, we investigated whether the administration of nitroglycerin could decrease ischemia-reperfusion injury in isolated rat lung reperfusion model for the confirmation of the effect of nitroglycerin, a donor of nitric oxide, on lung transplantation. Material and Method: 35 Sprague-Dawley species male white rats were used for this experiment. For nitroglycerin group (n=18), nitroglycerin was administered intravenously followed by mixed in flushing solution for preservation. As a control group (n=17), we used the same amount of normal saline. To evaluate the effect of nitroglycerin on the lung, heart-lung block was obtained, weighed and stored in University of Wisconsin Solution at 1$0^{\circ}C$ for 24 hours. In each group of the isolated lungs, reperfusion was carried out with Krebs-Hensleit-diluted human blood for 60 minutes. As parameters of the state of the isolated lung, peak inspiratory and pulmonary arterial pressures were continuously recorded. Oxygen and carbon dioxide tension of reperfusing blood were measured before and after 30, 60 minutes of reperfusion. After sixty minutes of reperfusion, protein content in bronchoalveolar lavage fluid was measured also for the evaluation of the degree of alveolar flooding. Lung myeloperoxidase activity was determined to verify the accumulation of neutrophils. Results: Although statistically significant differences were not noted in peak inspiratory and pulmonary arterial pressure between control and nitroglycerin group, latter group showed lowering tendency of pulmonary arterial pressure during the entire reperfusion period. Oxygen tension was higher (p<0.05) in nitroglycerin group compared with that of the control group, in contrast, there were no differences in carbon dioxide tension, protein content in bronchoalveolar lavage fluid and myeloperoxidase activity between the groups. In the examination of ultrastructural changes, nitroglycerin denoted the protective effect on the pulmonary architecture compared with that of control group. Conclusion: Collectively, on the bases of these experimental results, prior treatment of donor lung with nitroglycerin could result in better preservation of the lung. Consequently, these nitroglycerin preserved lungs are thought to be more suitable for successful transplantation of the lung.
Purpose: For the purpose of using Re-188 as a therapeutic radionuclide, we performed the quality control of the W-188/Re-188 generator system. Materials and Methods: Several quality control tests of the Re-188 eluate from generator were carried out for about 300 days. After elution of Re-188 with normal saline (20 ml), chromatogram and gamma-ray spectrum of Re-188 eluate were obtained. The presence of aluminum which was derived from the alumina bed of the generator was detected by using aluminum ion indicator kit. Re-188 eluate was allowed to decay for several days, and then W-188 breakthrough in the Re-188 eluate was measured by detecting gamma-ray at 227 keY and 290 keV. The pH and the pyrogenicity of the eluate were checked. The Re-188 bolus was concentrated with ion exchange columns. Results: The radioactivity of Re-188 eluate from the generator was $67.4{\pm}7.0%$ of W-188 during 270 days, and it was highest at third day after previous elution. Radiochemical purity of Re-188 eluate obtained from chromatogram was higher than 99%. Gamma-ray spectrum of Re-188 eluate showed a peak at 155 keV. Aluminum ion and W-188 contamination were not detected. The PH of Re-188 eluate was 3 and the concentration yield was 85%. Conclusion: Our experiments and results on quality control tests of Re-188 eluate from W-188/Re-188 generator may be useful for setting W-188/Re-188 generator in hospitals.
Background: The purpose of this study was to independently evaluate the beneficial effects of a high dose of transamine administrated prior to CPB on the postoperative hematologic aspect and bleeding. Materials and methods: This study included randomly selected groups of 40 adult patients undergoing OHS with CPB. All patients were divided into 2 groups: transamine group (T-group, n=20) and placebo group(P-group, n=20). The T-group received a high-dose of transamine(10 g) before and during CPB. The P-group received normal saline at the same times and served as a control group. Results: The results of comparative studies between the 2 groups in the same hematologic variables were summarized as follows. \circled1 During CPB, the fibrinogen concentrations and platelet counts were significantly lower in the P-group than in the T-group(p<0.01). \circled2 During CPB, production of D-dimer occurred in 18 patients(90%) in the P-group and did not occur in the T-group(0%) (p<0.0001). \circled3 At CPB-off, the % concentration of fibrinogen(70.2$\pm$3.9%) and the % platelet counts(72.4$\pm$4.5%) of the T-group were significantly higher than those(54.5$\pm$3.8%, 64.3$\pm$2.9%) of the P-group(p<0.01). \circled4 Postoperative values of PT(14.0$\pm$0.03 sec.) and aPTT (27.6$\pm$0.1 sec.) of the T-group were significantly lower than those(16.0$\pm$0.02sec., 30.1$\pm$0.1sec.) of the P-group(p<0.05). \circled5 Postoperative bleeding and requirement of whole blood and other blood products were significantly less in the T-group than in the P-group(p <0.05). \circled6 There were no significant hypercoagulability signs such as cerebral em bolism, myocardial infarction, pulmonary embolism, or any other neurological prob lems in either group. Conclusions: We concluded that a high dose of transamine administered prior to CPB prevents the activation of fibri nolytic system and has beneficial effects of reducing the postoperative bleeding t endency without apparent hypercoagulability signs.
Kim, Yun-Gyu;Kim, Yang-Won;Choe, Seok-Cheol;Jo, Gwang-Hyeon
Journal of Chest Surgery
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제29권7호
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pp.700-712
/
1996
Transpulmonary sequestration of leukocyte following cardiopulmonary bypass(CPB) has been recognized as one of main causes of postoperative pulmonary dysfunction. The purpose of this study is to investigate the effect of a single dose of prebypass corticosteroid on pulmonary leukostasis and postoperative pulmonary dysfunction. The study was performed prospectively in randomized-blind fas ion for 50 patients from January 1995 to June 1995. All patients were divided into two groups; In the steroid group(n=25), corticosteroid(Solu-Medrol 30mg1kg) was injected prior to CPB and in the placebo group (n=25), normal saline was injected before CPB. The results were summarized as follows. 1. Total peripheral leukocyte counts decreased significantly at 5 minutes of CPB in all patients(P<0.01), and began to increase progressively at later periods of CPB with neutrophilia. The significant rise remained at postoperative 7th day. 2. During partial CPB, transpulmonary leukostasis occurred in placebo group(P< 0.001), whereas it was prevented in steroid group. 3. In both groups, peripheral Lymphocyte counts were stable during CPB, but began to reduce at time of intensive care unit(ICV) and the Iymphocytopenia remained until postoperative )rd day. The Iympho- cyte counts recovered on postoperative 7th day. 4. In both groups, peripheral counts of monocyte were relatively stable in the e rly peroid of CPB, and increased gradually in the later periods of CPB. This significant monocytosis remained throughout postoperative periods(P< 0.05). 5. The mean value of postoperative PaOa was lower than that of pre-CPB In placebo group(P=0.01), but in steroid group, there was no significant difference(P=0. 90) and fever was higher in placebo group compared to steroid group(P=0.001).
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