• Journal of Oriental Neuropsychiatry
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• v.18 no.1
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• pp.185-196
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• 2007

Objective : This experimental Study was designed to investigate the effects of FOENICULI FRUCTUS(FF) on the change of inhibition lactate dehydrogenase(LDH) activity in neuronal cells and cytokines production in serum of cerebral ischemic rats. Method : FOENICULI FRUCTUS(FF)freeze dry powder and FF on the LDH activity in neuronal cells. Changes of FF on the physiological parameters(PaO2, PaCO2, MABP and HR) in crerbral ischemic rats. Effects of FF on the IL-1beta production, $TNF-{\alpha}$ production, $TGF-{\beta}$ production, and IL-10 in serum of cerebral ischemic rats. MCAO :. cytokines production of serum by drawing from femoral arterial blood after MCAO 1 hr. Reperfusion : cytokines production of serum by drawing from femoral arterial blood after reperfusion 1 hr. Results and Conclusion : 1. FF did not inhibit lactate dehydrogenase(LDH) activity in neuronal cells. 2. In serum by drawing from femoral arterial blood after middle cerebral arterial occlusion(MCAO) 1 hr and reperfusion 1 hr, sample group was significantly decreased $IL-l{\beta}$ production compared with control group 3. In serum by drawing from femoral arterial blood after MCAO 1 hr and reperfusion 1 hr, sample group was significantly decreased $TNF-{\alpha}$ production compared with control group. 4. In serum by drawing from femoral arterial blood after MCAO 1 hr and reperfusion 1 hr, sample group was significantly increased $TGF-{\beta}$ production compared with control group. 5. In serum by drawing from femoral arterial blood after reperfusion 1 hr, sample group was significantly increased IL-10 production compared with control group. This results were suggested that FF had inhibitive effect on the brain damage by inhibited LDH activity, $IL-l{\beta}$ and $TNF-{\alpha}$production, but accelerated $TGF-{\beta}$ production and IL-10 production.

• The Korean Journal of Zoology
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• v.35 no.1
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• pp.102-106
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• 1992

진도개와 삽사리 혈청 lactate dehydrogenase와 혈청 alkaline phosphatase의 동위효소 및 효소활성도를 분석하였다. 전기영동결과 진도개와 삽사리의 혈청에서는 5두지 종류의 LDH의 동위효소가 모두 확인되었다. LDH의 활성도는 진도개의 경우 522.53 $\pm$ 279.96(U/L)이었고 삽사리는 534.10 $\pm$ 280.35(U/L)이었다. 진도개와 삽사리의 혈청 alkaline phosphatase전기 영동상에서 는 한 종류의 동위효소만 관찰되었고 활성도는 진도개의 경우 7.61 $\pm$ 4.52(K-A unit)였고 삽사리는 10.46 $\pm$ 7. 10(K-A unit) 였다. 삽사리의 ALP 활성도는 연령에 따라 커다란 차이를 나타내었다.

• Animal cells and systems
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• v.1 no.3
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• pp.467-473
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• 1997

Taurine (2-aminoethanesulfonic acid), one of bioactive amino acid in the mammalian brain, is known to exert inhibitory effects on neurons via GABA receptor. In the present study, we examined effects of taurine on glutamateinduced neurotoxicity on hippocampal neuron cell culture using cell counting method and lactate dehydrogenase (LDH) assay. After 10 d of culture, cells were stimulated with appropriate drugs. Only 43% of cultured neuronal cells survived at one day after stimulation with 500 uM L-glutamate for 10 min. Survival rate was enhanced by 82% in the presence of 10 mM taurine. LDH activity from the culture supernatant incubated with a combination of L-glutamate and taurine was less than half of that with L-glutamate alone. In the next series of experiments, interleukin-6 (IL-6) mRNA expression in cultured astrocytes was investigated using reverse tanscription-PCR (RT-PCR). IL-6 mRNA was detected in the astrocytes stimulated with L-glutamate in a dose-dependent manner, while not detected in the unstimulated control astrocytes. The expression of IL-6 mRNA caused by 10 mM glutamate was inhibited by taurine, but not by GABA. These findings demonstrated a neuroprotective action of taurine against glutamate-induced toxicity.

• Journal of Environmental Science International
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• v.28 no.5
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• pp.475-483
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• 2019

The purpose this study was to investigate the influences of 5% turmeric (Curcuma longa L.) supplementation on enzyme activities such as aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), lactate dehydrogenase (LDH), amylase, lipase and catalase in serum of dyslipidemic rats. Sprague-Dawley (SD) rats (24 male) were divided into four groups, namely the ND group (normal-nondyslipidemic diet), NT group (normal-nondyslipidemic diet+5% turmeric), DD group (control-dyslipidemic diet), and DT groups (dyslipidemic diet+5% turmeric). Serum concentrations of blood urea nitrogen (BUN), creatinine and uric acid were significantly decreased (p<0.05) by turmeric supplementation diet. The activities of AST, ALT, ALP, LDH, amylase and lipase in sera of turmeric diet group were significantly decreased (p<0.05). The catalase activity in serum of turmeric supplementation group was significantly increased than dyslipidemic diet (p<0.05). In vivo experiment with dyslipidemic rats showed that ingestion of turmeric were effective in kidney and hepatic functional enzyme activities. Which suggests that turmeric material could be used for further studies as a potential source for nutraceutical foods.

• The Korean Journal of Pesticide Science
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• v.7 no.3
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• pp.198-206
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• 2003

To assess potential risk of the benzimidazole fungicides, their cytotoxicities were evaluated. Activities of LDH(Lactic dehydrogenase) in the culture fluid of CHL(chinese hamster lung) fiberoblast cell treated with 4.0, 16.0 or $32.0{\mu}g/mL$ of carbendazim for 24 hours were elevated 2.16, 2.94 and 2.64 folds compared to the control, respectively. DNA synthesis was inhibited by 45% at $2.0{\mu}g/mL$ of carbendazim. Benzimidazole fungicides showed high toxicity to cell and mitochondria of CHL cell by Giemsa and MTT (3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide) assay. $IC_{50}$ by the Giemsa assay of thiophanate-methyl, benomyl, carbendazim and captafol were over 125, 1.2, 30.0 and $0.3{\mu}g/mL$, respectively. $IC_{50}$ by the MTT assay of thiophanate-methyl, benomyl, carbendazim and captafol were over 125, 18.7, 20.4 and $2.6{\mu}g/mL$, respectively. Inhibitory concentration of cell median proliferation by SRB (sulforhodamin B) assay for thiophanate-methyl, carbendazim, benomyl, and captafol were 17.4, 5.3, 1.5 and $0.5{\mu}g/mL$, respectively. Accordingly, benzimidazole fungicides inhibited DNA synthesis, mitochondrial function, cell proliferation and induced cell necrosis.

• Korean Journal of Agricultural Science
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• v.44 no.4
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• pp.586-594
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• 2017

Mitochondrial activity affects skeletal muscle energy metabolism and phenotype. To address whether mitochondrial activity can modulate muscle phenotype in vitro, protein expression of myosin heavy chain (MyHC) in C2C12 muscle cell lines was investigated after treated with antimycin A, an inhibitor of oxidative phosphorylation in mitochondria. Fully differentiated C2C12 myotubes were administrated with different concentration of antimycin A including 0, 100, 200, 500, 700, and 1000 ng/mL. After 72 h treatment, myosin heavy chain isoform expression and related enzyme activity (lactate dehydrogenase; LDH and creatine kinase) were analyzed. Administration of antimycin A changed expression of MyHC in C2C12 myotubes showing a shift from slow to fast twitching muscle type. Protein expression of MyHC type 2b (fast twitching muscle type) was decreased (P < 0.05) by antimycin A treatment (500, 700, and 1000 ng/mL) when compared with control group. Administration of antimycin A (1000 ng/mL), however, decreased (P < 0.05) MyHC type I (slow twitching muscle type). Interestingly, LDH activity was increased (P < 0.05) by antimycin A treatment. Results from our current study proposed a possibility that skeletal muscle phenotype, including MyHC and LDH activity, can be shifted from slow to fast twitching type by inhibiting the mitochondrial activity in C2C12 myotubes.

• Journal of Chest Surgery
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• v.30 no.3
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• pp.293-299
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• 1997

With the introduction of new cardiac prosthesis, it behooves surgeons and cardiologists to monitor its performance carefully. ATS (Advancing The Standard) prosthetic valve has been used first in Guro hospital in Korea, since August 1994. Between August 1994 and July 1995, 21 patients received 28 ATS prosthesis(9 aortic, 19 mitral).19mi1ra1 valves were implanted through the "Extended Transseptal Approach" 10 were ma e and 11 were female, ranging from 20 to 54 years of age(Mean age : 37 years). The follow up period 126 patient-months(mean 6.1 months), varied from 1 month to 12 months. NYHA functional class was improved significantly, from $2.9\pm0.7$ preoperatively to $1.4\pm0.5$ postoperatively. Ejection fraction was also improved from $55.5\pm6.1%$ preoperatively to 59.8 $\pm7.4%$ postoperatively. Lactic dehydrogenase(LDH) was used as an indicator of hemolysis. The value of LDH changed from 483.3 $\pm$ 162 lUlL preoperatively to $527\pm274$ lUff postoperatively with no clinical significailce. Valve related complications, such as thromboembolism, valve thrombosis, anticoagulant related hemorrhage and prosthetic valve endocarditis did not develop except one anticoagulant related intracranial hemorrhage. There were no mortalities. This experience encourages us to continue using the ATS prosthetic valve, and this study will help those patients who need to have their heart valves replaced. replaced.

• Applied Biological Chemistry
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• v.36 no.1
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• pp.64-69
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• 1993

This study was performed to investigate detoxifying enzyme activities of carboxylesterase(CE), glutathione S-transferase(GST) and lactate dehydrogenase(LDH) at variable toxicity levels in fresh water fish, carp(Cyprinus carpio L.). The carp was exposed to single and combined pesticides of IBP, isoprothiolane and cartap for 48 hr at sublethal doses, $LC_{10}$ and $LC_{26}$. The detoxifying enzyme activities were assayed for the liver, head and gut of the carp. The enzyme activities we discovered were as follows: Both activities of CE and GST were increased at the sublethal doses but were declined by increasing doses. In the gut, we found that the CE activity had high levels in the treatment groups of isoprothiolane+IBP and isoprothiolane+cartap. In the head, the CE activity had high levels in the treatment groups of cartap, IBP and isoprothiolane. However, the GST activities were inconsistent in the head and gut of the fish. Also, the GST activity was declined by increasing protein contents. The highest LDH activity was shown in the isoprothiolane treated fish, while the lowest activity was observed in the isoprothiolane+cartap treatment.

• Journal of the Korean Applied Science and Technology
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• v.39 no.6
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• pp.760-768
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• 2022

The purpose this study was to investigate the influences of 5% mung bean (Phaseolus aureus L.) on BUN and enzyme activities in serum of hyperlipidemic rats. Sprague-Dawley(SD) rats (24 male) were divided into four groups, namely the BD group(normal-nonhyperlipidemic diet), BM group(normal-nonhyperlipidemic diet+5% mung bean), BH group(control-hyperlipidemic diet), and BHM group(hyperlipidemic diet+5% mung bean). Serum concentrations of blood urea nitrogen (BUN) and uric acid were significantly decreased (p<0.05) by mung bean supplementation diet. The activities of AST, ALT, ALP, LDH, amylase and lipase in sera of mung bean diet group were significantly decreased (p<0.05). The catalase activity in serum of mung bean supplementation group was significantly increased than hyperlipidemic diet (p<0.05). In vivo experiment with hyperlipidemic rats showed that ingestion of mung bean were effective in kidney and hepatic functional enzyme activities. Which suggests that mung bean material could be used for further studies as a potential source for nutraceutical foods.

• Clinical and Experimental Pediatrics
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• v.55 no.7
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• pp.238-248
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• 2012

Purpose: Hypoxic-ischemic encephalopathy is an important cause of neonatal mortality, as this brain injury disrupts normal mitochondrial respiratory activity. Carnitine plays an essential role in mitochondrial fatty acid transport and modulates excess acyl coenzyme A levels. In this study, we investigated whether treatment of primary cultures of rat cortical neurons with L-carnitine was able to prevent neurotoxicity resulting from oxygen-glucose deprivation (OGD). Methods: Cortical neurons were prepared from Sprague-Dawley rat embryos. L-Carnitine was applied to cultures just prior to OGD and subsequent reoxygenation. The numbers of cells that stained with acridine orange (AO) and propidium iodide (PI) were counted, and lactate dehydrogenase (LDH) activity and reactive oxygen species (ROS) levels were measured. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and the terminal uridine deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling assay were performed to evaluate the effect of L-carnitine (1 ${\mu}M$, 10 ${\mu}M$, and 100 ${\mu}M$) on OGD-induced neurotoxicity. Results: Treatment of primary cultures of rat cortical neurons with L-carnitine significantly reduced cell necrosis and prevented apoptosis after OGD. L-Carnitine application significantly reduced the number of cells that died, as assessed by the PI/AO ratio, and also reduced ROS release in the OGD groups treated with 10 ${\mu}M$ and 100 ${\mu}M$ of L-carnitine compared with the untreated OGD group (P<0.05). The application of L-carnitine at 100 ${\mu}M$ significantly decreased cytotoxicity, LDH release, and inhibited apoptosis compared to the untreated OGD group (P<0.05). Conclusion: L-Carnitine has neuroprotective benefits against OGD in rat primary cortical neurons in vitro.