• The Journal of Korean Medicine
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• 제25권1호
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• pp.111-116
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• 2004

Objective : To assess the clinical efficacy of Yangkyuksanwha-tang on acute stroke Methods : We prescribed Yangkyuksanwha-tang to 83 acute stroke patients without thrombolytic treatment. Results : The rate of progressive stroke type was 1.2%, it was remarkably lower than previous reports. 3.6% felt an itching sensation, 3.6% complained headache, dizziness and powerless, 2.4% complained indigestion and diarrhea, 1.2% appeared hematuria and G-I bleeding. Yangkyuksanwha-tang decreased Stroke-Pattern Identification and National Institute of Health Stroke Scale(NIHSS), and increased Modified Barthel Index(MBI). So we could suggest that this medicine have desirable effect to reduce the severity of stroke and improve functional recovery. As to the laboratory findings, all results were within the normal value, which showed no hepatic or renal toxicity. Conclusion : We could suggest that Yangkyuksanwha-tang is a useful medicine which has clinical efficacy for acute stroke, but further investigation for an administration of more than 2 weeks is necessary.

• Biomolecules & Therapeutics
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• 제12권3호
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• pp.185-188
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• 2004

The purpose of this study is to evaluate the effect of cigarette smoke condensate (CSC) on toxification/detoxification metabolic pathway in primary cultured rat hepatocytes. We measured the activities of cytochrome P450 monooxygenases (CYP450s) and UDP-glucuronyltransferase, sulfotransferase and glutathione-S-transferase in CSC-treated rat hepatocytes. CSC significantly increased the activities of hepatic CYP4501A1 and CYP4501A2 to 7.5 fold and 1.6 fold respectively, compared with control level. However, CSC did not affect the activities of conjugation enzymes. We a1so examined if treatment of CSC could change thc cytotoxicity of acetaminophen (AA) through modulation of metabolizing enzymes. In rat hepatocytes, pretreatment with CSC potentiated the cytotoxicity of AA. This result indicates that potentiation of AA toxicity by CSC pretreatment may be related to induction of CYP4501A1 and CYP4501A2.

• Journal of Physiology & Pathology in Korean Medicine
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• 제20권3호
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• pp.663-669
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• 2006

This study was done to investigate the effect of Ganyangsanghang-bang(GYSHB) on hypertension. After administering GYSHB extract to SHR for 5 weeks, changes in blood pressure, pulse rate, aldosterone and catecholamine levels in plasma were examined, and immunohistochemical changes were observed, and liver function test was done. The following results were obtained; blood presure decreased significantly as well as levels of aldosterone and norepinephrine in SHR. But levels of dopamine were unaffected. No capillary vessel dilation in adrenal cortex was observed. Safety against hepatic toxicity was showed. These results support a role for GYSHB might be usefully applied in treatment of hypertension.

• Journal of Haehwa Medicine
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• 제17권1호
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• pp.53-57
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• 2008

These day, herbal drugs have been widely used in all over the world, as primary therapeutics or supplements for treating various diseases. Herbal drugs are generally regarded as non-toxic due to their natural origin and long history traditionally used without serious adverse reactions. However, plenty warnings have been reported, particularly about the potential hepatotoxicity of herbal products. This report would be helpful for understanding theory of toxicology and prevent from herbal drug-derived hepatotoxicity in Oriental medicinal field.

• Journal of Pharmaceutical Investigation
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• 제25권4호
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• pp.313-322
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• 1995

The covalent conjugation of human recombinant superoxide dismutase (hrSOD) with trichloros-triazine activated polyethylene glycol (PEG) 5000 formed soluble conjugates with molecular weight of 92KD, which retained $90{\sim}98%$ of original activity with a markedly prolonged plasma half-life of enzyme activity. The effect of hrSOD-PEG conjugates on acetaminophen (ACP)-induced hepatotoxicity was tested in male rats which were pretreated with 3-methylcholanthrene. HrSOD-PEG conjugates inhibited the hepatotoxicity produced by ACP, on the other hand, native hrSOD had no protective effect. The above results indicated that oxygen radicals might participate in the mechanism of the ACP-induced hepatotoxicity and that polymer conjugated-protein drugs with prolonged half-lives could be employed as an effective therapeutic agent.

• Journal of Physiology & Pathology in Korean Medicine
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• 제20권1호
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• pp.131-137
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• 2006

This study was done to investigate the effect of Gamisamool-tang(GMSMT) on hypertension. After administering GMSMT extract to SHR for 5 weeks, changes in blood pressure, pulse rate, aldosterone and catecholamine levels in plasma were examined, and immunohistochemical changes were observed, and liver function test was done. The following results were obtained; blood presure decreased significantly as well as levels of aldosterone, norepinephrine and epinephrine in SHR, But levels of dopamine were unaffected. No capillary vessel dilation in adrenal cortex was observed. Safety against hepatic toxicity was showed. These results support a role for GMSMT might be usefully applied in treatment of hypertension.

• Journal of Environmental Science International
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• 제28권11호
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• pp.943-950
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• 2019

The purpose of this study was to probe the influences of NaF oral administration on a dose-effect relationship between fluoride levels of serum enzyme activity such as alkaline phosphatase (ALP), aspartate aminotransferase (AST), alanine aminotransferase (ALT), and lactate dehydrogenase (LDH) in rats fed experimental diets for 5 weeks. All groups increased the activity of serum ALP, AST, ALT, and LDH levels with increasing NaF. In addition the fluoride levels of serum and organ tissues (liver, brain, heart, lung, kidney) in oral NaF groups (NF3~NF50) were significantly increased by adding sodium fluoride in comparison with normal diet group (ND) (p<0.05). These results, a high concentration of sodium fluoride was determined that the toxicity to various organ tissues.

• Proceedings of the Korean Society of Applied Pharmacology
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• 한국응용약물학회 1998년도 Proceedings of UNESCO-internetwork Cooperative Regional Seminar and Workshop on Bioassay Guided Isolation of Bioactive Substances from Natural Products and Microbial Products
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• pp.142-142
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• 1998

This study has been undertaken to examine the effect of biphenyl dimethyl dicarboxylate (DDB) on rat liver drug metabolizing enzyme in order to understand the mechanism of DDB on improving hepatic toxicity in rat liver. After DDB was administered into male rats for different periods of time, mRNA level of CYP1A1 and CYP2B1 was measured by polymerase chain reaction (PCR). DDB treatment resulted in increase in CYP2B1 mRNA level whereas there was no change in CYP1A1 mRNA level. This effect of DDB was time dependent reaching maximal level by 2-day treatment. DDB dose response study showed that 50mg/kg DDB induced CYP2B1 mRNA to maximal level and DDB icreased CYP2B1 gene expression with dose-dependent manner. Based on studies of lipid peroxidation, serum ALT and AST levels and histopathologic examination showed DDB protection on CCl4 induced hepatotoxiccity.

• Korean Journal of Environmental Biology
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• 제38권2호
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• pp.271-277
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• 2020

Toxicities to many organs caused by humidifier disinfectants have been reported. Recently, humidifier disinfectants have been reported to cause cardiovascular, embryonic, and hepatic toxicities. This study was designed to investigate the toxic mechanism of humidifier disinfectants and compare toxicity in a cellular model and a zebrafish animal model. Because brain toxicity and skin toxicity have been less studied than other organs, we evaluated toxicity in a human dermal cell line and zebrafish under various concentrations of humidifier disinfectants that included polyhexamethyleneguanidine phosphate (PHMG), oligo-[2-(2-ethoxy)-ethoxyethyl-guanidinium-chloride] (PGH) and methylchloroisothiazolinone/methylisothiazolinone (CMIT/MIT). A human dermal fibroblast cell line was treated with disinfectants (0, 2, 4, 6, 8, and 16 mg L^-1) to compare their cytotoxicity. The fewest PHMG-treated cells survived (up to 33%), while 49% and 40% of the PGH- and CMIT/MIT-treated cells, respectively, survived. The quantification of oxidized species in the media revealed that the PHMG-treated cells had the highest MDA content of around 28 nM, while the PGH- and CMIT/MIT-treated cells had 13 and 21 nM MDA, respectively. As for brain toxicity, treatment of the zebrafish tank water with CMIT/MIT (final 40 mg L^-1) for 30 min resulted in a 17-fold higher production of reactive oxygen species (ROS) than in the control. Treatment with PGH or PHMG (final 40 mg L^-1) resulted in 15- and 11-fold higher production, respectively. The humidifier disinfectants (PHMG, PGH, and CMIT/MIT) showed severe dermal cell toxicity and brain toxicity. These toxicities may be relevant factors in understanding why some children have language disorders, motor delays, and developmental delays from exposure to humidifier disinfectants.

• Korean Journal of Environmental Agriculture
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• 제16권1호
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• pp.61-66
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• 1997

This study was carried out to investigate the toxicological effects of carbofuran on the histological and fine structures in the kidney, liver, and brain of rat and also to clarify compensatory effects of phenobarbital sodium (PB) and 3-methylcholanthrene(3-MC) on the carbofuran toxicity. SPF albino rats were treated with carbofuran(3.8mg/kg), PB(60mg/kg), 3-MC(60mg/kg), carbofuran+PB, carbofuran+3-MC and subjected to the light microscopic study. In the kidney of rat, hemorrhage and extremely atropic change of renal corpuscles were frequently observed at 48 hrs after carbofuran treatment. Combination treatment groups of carbofuran and PB or 3-MC showed atrophic changes were largely recovered at 6 hrs, and the tissue findings of the kidney became similar to those of control group at 48 hrs after treatment. In the liver of rat treated only carbofuran, the degenerative and necrotic changes of hepatic lobules were frequently observed at 48 hrs after carbofuran treatment. Combination treatment of carbofuran and PB or 3-MC showed the hepatic lobules were similar to those of control groups at 6 hrs after the combination treatment. In the brain of rat treated with carbofuran alone, degenerative changes and dilation of capillary vessel of cerebral cortexes were observed at 48hrs after treatment. Combination treatment of carbofuran and PB or carbofuran and 3-MC showed the cerebral cortexes were similar to those of control groups at 6 hrs after the treatment. These results suggest that PB and 3-MC could regenerate the toxicity of carbofuran to the tissue of kidney, liver and brain of rat.