Kim, Jong-Tae;Chung, Dong-Sup;Kwak, Seung-Won;Han, Young-Min;Park, Young-Sup;Kim, Moon-Chan
Journal of Korean Neurosurgical Society
/
v.38
no.2
/
pp.126-131
/
2005
Objective : The choice of tumor antigen for dendritic cell[DC]-loading has still been an unresolved problem in the DC-based vaccine strategies against malignant gliomas that has not been found well-characterized tumor specific antigens. In this study, we compare tumor-specific T cell response induced by glioma apoptotic body[GAB]-pulsed DCs to response induced by glioma cell lysate-pulsed ones quantitatively. Methods : DCs generated in the presence of granulocyte macrophage-colony stimulating factor and interleukin[IL]-4 from peripheral blood mononuclear cells[PBMCs] of HLA-A2 positive healthy donors were cultured. Each GABs and glioma cell lysate generated from HLA-A2 positive T98G glioblastoma cells were co-incubated with DCs. $CD8^+$ T lymphocytes isolated from PBMCs of same donors were cultured in media containing IL-2 and either stimulated by GAB- or lysate-pulsed DCs three times at a weekly interval. The interferon[IFN]-${\gamma}$ concentrations of each cell culture supernate were measured by enzyme immunoassay technique. Cytolytic activity of the generated cytotoxic $CD8^+$ T cells either stimulated with GAB- or lysate-pulsed DCs was determined by a standard 4-h $^{51}Cr$-release assay. Results : IFN-${\gamma}$ production and cytolytic activity of effector T cells stimulated by GAB-pulsed DCs were significantly higher than those of T cells stimulated by lysate-pulsed ones. Conclusion : These results indicate the choice of antigen is a critical determinant in the induction of antitumor immunity against malignant glioma. Antigen preparations from GABs represent a promising alternative to glioma cell lysate in DC-based glioma vaccine strategies.
Metabolic responses to the protein-free, high-carbohydrate diet and subsequent food restriction on the same diet at the level of 50% and 75% has been studied on the adult albino rats. The energy source was either corn starch or sugar. In experiment I, adult male rats weighing $509{\pm}8g$ were divided into two groups 10 rats each. Rats fed on the stock diet served as a control. Rats of restriction group received a protein free diet until they reduced their weight down to 400g and continue on a protein-calorie restriction diet until they reduced their weight down to 300g. In experiment II, 28 adult male rats and the same numbers of female rats weighing $329{\pm}5g$ and $223{\pm}4g$ respectively were divided into four groups, 7 males and females in each. Rats fed on a stock diet were sacrificed at the point when others started a protein free diet. These were served as the control. The protein free group received a protein free diet ad libitum for 4 weeks. The 50% restriction group and 75% restriction group were fed on a protein free diet coupled with food restriction at levels of 50% and 75% respectively for 3 weeks. In the result of this study: 1. The rate of body weight changes was similar between the males and the females. Feeding protein free diet ad lib. initiated a rapid weight lost of approximately 25% and protein free diet coupled with food restriction showed 37-43% reduction of their initial weight. 2. There was no significant differences in the value of the N concentration in liver, spleen, brain and muscle between controls and experimental groups. 3. Rats fed on protein free diet showed 1/10 value of the control in the nitrogen excretion in urine. However female showed less N excretion than male. 4. Observing blood picture, the effects of protein depletion and calorie restriction were not appeared any remarkable changes. 5. There was no sign of fatty liver which might result from protein depletion and calorie restriction. 6. Following semi-starvation, FAO and HMP-DH total enzyme activity was reduced, but activity per unit weight was relatively stable.
Renal ischemia-reperfusion injury is great clinical important because viability of the transplanted organ depends on the tolerance of the graft to ischemia-reperfusion injury, an inevitable processing during surgery. The purpose of this study was to investigate the effects of irrigation-aspiration in ischemia-reperfusion injury model induced by cross-clamping of renal vessels. Blood samples were collected from these dogs for measurement of kidney function and antioxidant enzyme activity, and RI at the intrarenal artery was measured at different time intervals. And the kidneys were taken for histopathologic evaluation at day 14. Kidney function (Cr and BUN) showed a significant increasing in untreated group compared to treated group. Resistive index of intrarenal artery was no significant difference among the groups. Activity of antioxidant enzymes in plasma was significant decrease in untreated group compare to control group while in treated group was no significant difference compared to control group. In histopathologic finding, treated group was showed less damage than that of untreated group. This result suggests that the processing of irrigation-aspiration is useful to reducing ischemia-reperfusion injury.
Park, Soo-Jin;Choi, Mi-Kyeong;Kim, Jin-Suk;Lim, Hak-Tea;Kang, Myung-Hwa
Journal of the Korean Society of Food Science and Nutrition
/
v.37
no.10
/
pp.1251-1257
/
2008
For the first 42 days, we made rats obese by feeding them potato starch instead of corn starch and after that we fed them transformed potato starch by 4 groups for 70 days. The 4 groups are GPS group, SPS group, EZ group and H40 groups and each were fed normal potato, small potato, enzyme treated potato, and acid treated potato starches, respectively. We determined body weight and feeding efficiency, lipid profiles in serum, lipid peroxidation in tissues and redox antioxidant system as GSH and GP-x in vivo. As a result, there was no difference in the increment of body weight in the groups of GPS, EZ and H40. Therefore EZ group showed lower body weight increment than other groups. While GPS group and SPS group did not show significant difference in blood glucose, cholesterol level, LDL-cholesterol and TC, and their measured values were lower than those of EZ and H40 groups. No significant difference was found in HDL-cholesterol level except for GPS group. Furthermore, when calculating atherogenic index (AI) by HDL-cholesterol and TC contents, H40 group showed higher measured value than other groups. When measuring the lipid peroxidation in serum, kidney and liver tissues, the serum lipid peroxidation in H40 group was higher than others. In the tissue of liver and kidney, EZ and H40 groups showed significantly lower contents than others. The content of GSH showed different tendency in each tissue, but the measured value of GP-x activity was lower in SPS group.
Recently the measurement of biophoton emission has attracted increasing attention in the study on physiological state of biological systems. We report the measurements of biophoton emission from the mouse fatty liver induced by carbon tetrachloride, CCl$_4$. The hepatotoxin, CCl$_4$ in olive oil, was injected intraperitoneally into two groups of ICR mice which were made of 6 mice in each group. The control groups corresponding to the treated groups were prepared with the injections of olive oil only. After the injections, livers of two groups were extracted and measured biophoton emission in 24 hours and 72 hours later, respectively. We also extracted the plasma in the blood and measured the transaminase activity. Results show that biophoton emission from the livers in 24-hour treated group is 69.3${\pm}$21.2 counts/min/$\textrm{cm}^2$, which is two times more larger than that in 24-hour control group, 29.5${\pm}$5.9 counts/min/$\textrm{cm}^2$ Biophoton emission from the livers in 72-hour treated group is 37.0${\pm}$14.8 counts/min/$\textrm{cm}^2$. These biophoton results correlate with those of the biochemical assays. We conclude that biophoton emission can be used as a biomarker of mouse fatty liver induced by CCl$_4$.
Garlic occupies a special position among the many foods of vegetable origin because it is the sole food for Koreans during the their lives. And vitamin A has been ingested by forms of food or additives. Cadmium has been described as one of the most dangerous trace elements in the food and environment of man and livestocks. Since the de novo synthesis of stress proteins can be detected early after exposure to some agents, analysis of cadmium-induced changes in gene expression , ie. alterations in patterns of protein synthesis, may be useful to develop as biomarkers of exposure and damage for food hygiene. He acute and chronic combine effects of cadmium (Cd, CdCl2 20mg/kg), garlic oil(Dds: diallyl disulfide 50mg/kg, 3 times a week) and vitamin A(Ra: retinol acetate 50,000 IU/kg, 3 times a week) on Wistar male rats were evaluated concerning cadmium contents, tissues enzyme activity, HSP expression histopathological and electron microscopical examinations. The results of the study are as follows ; 1. Less cadmium was absorbed through the digestive tracts, but the ratio of contents in tissue were not changed by the simultaneous adminstration of diallyl disufide or retinol acetate. 2. ALT(alanine aminotransferase) , AST(aspartate aminotransferase), glucose, BUN (blood urea nitrogen), creatinine, the key indices of the clinical changes in hepatic and renal function were significantly hanged by the cadmium treatment after 1 week in liver, after 4 weeks in kidney. 3. Histopathological changes in cadmium treated rats were appeared at 8 weeks age treatment in kidneys. Homogenous eosinophilic material was accumulated in cortical and collecting tubular lumens at 16 weeks. Degenerated or necrotized tubular cells were observed in cortex and medulla. Degenerated seminiferous tubules and homogeneous eosinophilic material was seen in interstitial tissue of rat treated with cadmium for 16 weeks. Calcium deposits were seen in degenerated seminiferous tubules and the tubules showed severe calcification of rat treated with cadmium for 16 weeks. Electron microscope changes in kidney were observed in rats treated with CdCl2 20 mg/kg. Proximal convoluted tubule cells showed selling of cytoplasm and narrow lumen. Capillary endothelial cells showed cytoplasmic vacuoles and swelling. Degenerated epithelial cells were accumulated in tubular lumen of kidney. 4. Enhanced synthesis of 70 KDa relateve molecular mass proteins were detected in 2 hours after cadmium, exposure, with maximum activity occurring at 8~48 hours. Induction of HSP 70 was evident at proximal tubules and glomeruli in kidney. Testicular cells produced enough HSP to be detected normally. From the above results, it could be concluded that HSP70 induction by the cadmium treatment was a rapid reaction to indicated the exposure of xenobiotics, and retinol acetate reduced the cadmium induced nephrotoxicity.
Objectives : Diabetes is a disease in which the body does not produce or properly use insulin. Etiological studies of diabetes and its complications showed that oxidative stress might play a major role. Therefore, many efforts have been tried to regulate free oxygen radicals for treating diabetes and its complications. Iksujisundan has been known to be effective for the treatment of diabetes. The present study was carried out to investigate the effect of Iksujisundan on renal function, peroxynitrite(ONOO-) scavenging activity and polyol pathway in streptozotocin-induced diabetic rats. Methods : The crushed Iksujisundan was extracted 3 times, each time with 3 volumes of methyl alcohol at 60$^{\circ}C$ for 24 h. The extract was filtered and evaporated under a reduced pressure using a rotary evaporator to yield 87.8g. Iksujisundan extract was orally administreted at 100 mg per 1 kg of body weight for 20 days to the diabetic rats induced by streptozotocin(60mg/kg). The effects of Iksujisundan extract on the streptozotocin-induced diabetic rats were observed by measuring the serum level of glucose, insulin, lipid components, creatinine and BUN, and also the kidney levels of superoxide anion radical(${\cdot}$O2-), nitric oxide(NO) and ONOO-, and also the enzyme activities involved in the polyol pathway. Results : The effects of Iksujisundan on the streptozotocin-induced diabetic rats with regards to body weight, blood glucose and indulin levels, creatinine and BUN levels, total cholesterol and triglyceride lavels, and HDL-cholesterol levels were all shown to be good enough to prevent and cure the diabetes and its complications. Iksujisundan inhibited the generation of ${\cdot}$O2-,NO and ONOO- in the kidney of streptozotocin-induced diabetic rats. Renal aldose reductase and sorbitol dehydrogenase activities were increased in the streptozotocin-induced diabetic rats were reversed toward natural activities. Conclusions : Iksujisundan might inhibit the development of diabetes and its complications by scavenging reactive oxygen and nitrogen species, thereby by reducing oxidative stresses and also by regulating the activities of polyol pathway enzymes, all of which could help to recover kidney function.
Kim, Wang-In;Youn, Dae-Hwan;Choi, Chan-Hun;Na, Chang-Su
Korean Journal of Acupuncture
/
v.29
no.1
/
pp.131-141
/
2012
Objectives : This study was performed to investigate the effect of invasive laser acupuncture treatment at Liver Brook (LR2) acupoint and Liver Sea (LR8) acupoint on liver damage induced by D-galactosamine (D-GalN) in rats Methods : Liver damage was induced by D-GalN. The experimental rats were divided into two groups (control group, Low Level Laser Treatment (LLLT) group). Control groups were classified into small groups. Intact group had no liver damage and no treatment. D-GalN group was induced liver damage induced by D-GalN and not treated. LLLT group were induced liver damage induced by D-GalN and then treated at the LR2 or LR8 acupoint with 532, 658, 904 nm invasive laser acupuncture. The treatment was carried out three days at a time for 15days at both acupoints. To examine mechanism of the effect of invasive laser acupuncture, we measured the contents of ASP, ALT, ALP, TBIL in serum, CBC in blood and SOD in liver tissue. Results : The change of body weight increased in all groups. That change was AST and ALP, the AST activity decreased significantly compared with the control groups and decreased by 532 nm and 904 nm both LLLT groups. But ALP increased at LR8 acupoint by 658 nm. TBIL level significantly decreased in all LLLT groups. The SOD of LLLT groups increased in the liver tissue of rats compared to the control groups. SOD activity indicated that LLLT can help cellular defense mechanism by preventing scavenging hydrogen peroxide. In the change of WBC, it was increased in D-GalN Control group compared to intact group and LLLT groups. Conclusions : These results suggested that invasive laser acupuncture treatment at LR2 or LR8 acupoint reduced activation of hepatic enzyme and damage of liver tissue. Thus, the effect of invasive laser acupuncture was nearly identical to the way of the traditional acupuncture for the treatment of hepatocytotoxicity.
Journal of the Korea Academia-Industrial cooperation Society
/
v.22
no.6
/
pp.341-348
/
2021
Serum amylase is a representative enzyme secreted by the salivary gland and pancreas. This study investigates the clinical significance of serum amylase levels in Sjögren's syndrome (SS). Totally, 70 female subjects were enrolled, who were diagnosed as SS and had no accompanying afflictions that affected the serum amylase levels. Unstimulated salivary flow rate (U-SFR) and stimulated SFR (S-SFR), salivary gland scan, and disease activity markers (ESSDAI and ESSPRI), as well as blood tests including ESR, CRP, and amylase, were evaluated. Serum amylase showed significant positive correlation with the U-SFR and S-SFR, and was increased with higher ejection fraction (EF) of the parotid gland. However, there was no significant correlation with disease activity and inflammatory markers. Based on their average amylase levels, subjects were divided into two groups. The group with higher serum amylase levels showed a statistically significant increase in the S-SFR and EF of the parotid gland. Considering the results of the salivary gland scan, we conclude that serum amylase is significantly correlated with SFR and the EF of the parotid gland, thereby indicating that the salivary gland function remains intact in SS.
Park, Sun-Hee;Kim, Min-Ji;Kim, Go-Eun;Park, So-Yeong;Kim, Koth-Bong-Woo-Ri;Kim, Yeon-Ji;Cho, Young-Je;Ahn, Dong-Hyun
Journal of the Korean Society of Food Science and Nutrition
/
v.46
no.8
/
pp.919-928
/
2017
The immuno-enhancing effects of alginate oligosaccharides from Sargassum coreanum were investigated. The alginate oligosaccharides were produced by an alginate-degrading enzyme from S. oneidensis PKA 1008. The degraded alginate oligosaccharides were visualized by thin-layer chromatography developed using a solvent system of 1-butanol/methanol/water, 4:1:2 (v/v/v). Alginate was degraded into dimmers at 60 h. As a result, the levels of Th1 cytokine [interferon $(IFN)-{\gamma}$ and interleukin (IL)-2] and Th2 cytokine (IL-6 and IL-10) increased with increasing incubation time compared to the control in vitro. Enzymatic extract treatment promoted proliferation of splenocytes at concentrations of 100 and 200 mg/kg at 24 h in vivo. Secretion of $IFN-{\gamma}$ and IL-2 significantly increased in a dose-dependent manner at 24 h as well as induced higher production of IgG2a in serum. Natural killer cell activity was measured and tended to increase. In addition, complete blood cell counts increased in a dose-dependent manner. These results indicate that alginate oligosaccharides produced by crude enzyme from S. oneidensis PKA 1008 may have significant immune activities.
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