• 제목/요약/키워드: Metabolic activation

검색결과 427건 처리시간 0.03초

고혈압 치료제 SKP-450의 유전독성평가 (Genotoxicify Studies of on Antihypertensive Agent, SKP-450)

  • 하광원;오혜영;박장환;허옥순;손수정;한의식;류근호;조용백
    • 한국환경성돌연변이발암원학회지
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    • 제18권2호
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    • pp.123-128
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    • 1998
  • To evaluate the genotoxicity of SKP-450, an antihypertensive agent the in vitro reverse mutation assay using Salmonella typhimurium, the Chromosome aberration assay using Chinese hamster lung (CHL) cells and the in vivo micronucleus assay using bone marrow cells of ddY mice were performed. In the Reverse mutation test, SKP-450 did not induced mutagenicity in Salmonella typhimurium TA 98, TA 100, TA 1535 and TA 1537 with and without metabolic activation. In the chromosome aberration assay using CHL cells, there was no increased incidence of structural and numerical aberrations with and without metabolic activation. The in vivo induction of micronuclei was measured in polychromatic erythrocytes of bone marrow of male ddY mice at 30 hours after treatment with SKP-450 by p.o once. The results showed no increased incidence of micronucleated polychromatic erythrocytes in bone marrow of ddY male mice treated with SKP-450.

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옻나무 추출액(Rhus-II)의 안전성에 관한 유전독성학적 평가 (Genotoxicicological Safety Estimate for the Rhus-II)

  • 최창순;한동운
    • 한국식품위생안전성학회지
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    • 제20권1호
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    • pp.18-21
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    • 2005
  • These observations were performed to investigate the safety of the natural herbs (Rhus-II) in respect of genotoxicity. This substance was examined in two in-vitro tests: (1) Salmonella typhimurium reversion assay (Ames test) in strain TA 98, TA 100, TA 1535 and TA 1537, (2) in vitro chromosome aberration test in cultured Chinese hamster ovary (CHO) cells. In the reverse mutation test, Rhus-II did not induced mutagenicity in Salmonella typhimurium reversion assay(Ames test) with or without metabolic activation. In the chromosome aberration assay using CHO cells, there was no increased incidence of structural and numerical aberrations with or without metabolic activation. These results indicated that, the Rhus-II had no genotoxicity.

Mutagenicities of Workplace Chemicals in Korea

  • Maeng, Seung-Hee;Lee, Jong-Yun;Lee, Yong-Mook;Chung, Hai-Won;Yu, Il-Je
    • 한국환경성돌연변이발암원학회지
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    • 제21권1호
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    • pp.57-62
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    • 2001
  • Bacterial reverse mutation assays were performed for 20 workplace chemicals in Korea, which were selected among workplace chemicals under the Korea Industrial Safety and Health Act (KISHA) with the occupational exposure levels (OELs). The assays were carried out by using the pre-incubation method ($37 ^{\circ}C$, 20 min) with and without metabolic activation using Salmonella typhimurium TA98, TA100, TA1535, TA1537 and E. coli WP2uvrA. The chemicals were tested at 5 concentrations both in the preliminary and the second assays. Despite the cell toxicities, there were no chemical-induced mutagenicities with or without metabolic activation in any of 20 chemicals.

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2-[(4- Cyanophenyl)amino] -3-chloro-1, 4- naphthalenedione (NQ-Y15)의 돌연 변이원성 (Mutagenicity of 2-[(4- Cyanophenyl)amino] -3-chloro-1, 4- naphthalenedione (NQ-Y15))

  • 김봉희;정기화;유충규;창동신;이기선;전선덕;소동수;채상호;문창규
    • Environmental Analysis Health and Toxicology
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    • 제15권4호
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    • pp.157-163
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    • 2000
  • 2- [(4- Cyanophenyl)amino] -3-chloro-1, 4- naphthalenedione (NQ-Y15) was asssayed for its genotoxic potential by using Salmonella typhimurium reversion assay and in vitro chromosome aberration test on Chinese hamster lung cells. In the Ames test, NQ-Y15 induced his + revertants of Salmonella typhimurium TA 98 and TA1537, reaching levels twice the negative control values. But, NQ-Y15 induced only his+ revertants of Salmonella typhimurium TA1537 more than twice the control values under the condition with metabolic activation system. In the cytogenetic test on chinese hamster lung cells. NQ -Y15 showed significant chromosomal aberrations, but the incidence was significantly reduced in the presence of metabolic activation.

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필발 추출물의 포도당 흡수능에 대한 효과 (Effects of Fructus Piperis Longi Extracts on Glucose Uptake in Adipocyte)

  • 김미성;권강범;송제호
    • 동의생리병리학회지
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    • 제28권1호
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    • pp.59-62
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    • 2014
  • Glucose uptake plays a pivotal role in maintaining whole body glucose homeostasis in adipocytes and skeletal muscles. In the present study we have shown that Fructus Piperis Longi Extracts (FPLE) can stimulate glucose uptake in OP9 adipocytes. The increasing effects of FPLE on glucose uptake were inhibited by compound C pretreatment, which means that the glucose uptake effects by FPLE were carried out by AMP-activated protein kinase (AMPK) activation. Further studies revealed that FPLE stimulated glucose transport occurs through a mechanism involving extracellular signal-regulated kinase (ERK1/2) activation.

Cytotoxicity and Genotoxicity Study of CKD-712 in mammalian cell system

  • Kim, Eun-Young;Yun, Hye-Jung;Kim, Youn-Jung;Ryu, Jae-Chun
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.179.1-179.1
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    • 2003
  • CKD-712, named S-YS49 is a chiral compound derived from higenamine (one component of Aconite spp.) derivatives. To compare the cytotoxicity of CKD-712 between in the absence and in the presence of S9 metabolic activation system, we performed try pan blue dye exclusion assay in Chinese hamster lung (CHL) cell. In CHL cells, the cytotoxicity ($IC_{50}$) of CKD-712 was 92.9 ${\m}g$/$m\ell$ and 186.1 ${\m}g$/$m\ell$ in the absence and presence of S9 metabolic activation, respectively. (omitted)

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The role of immunomodulatory metabolites in shaping the inflammatory response of macrophages

  • Doyoung, Park;Gyumin, Lim;Sung-Jin, Yoon;Hyon-Seung, Yi;Dong Wook, Choi
    • BMB Reports
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    • 제55권11호
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    • pp.519-527
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    • 2022
  • Macrophage activation has long been implicated in a myriad of human pathophysiology, particularly in the context of the dysregulated capacities of an unleashing intracellular or/and extracellular inflammatory response. A growing number of studies have functionally coupled the macrophages' inflammatory capacities with dynamic metabolic reprogramming which occurs during activation, albeit the results have been mostly interpreted through classic metabolism point of view; macrophages take advantage of the rewired metabolism as a source of energy and for biosynthetic precursors. However, a specific subset of metabolic products, namely immune-modulatory metabolites, has recently emerged as significant regulatory signals which control inflammatory responses in macrophages and the relevant extracellular milieu. In this review, we introduce recently highlighted immuno-modulatory metabolites, with the aim of understanding their physiological and pathological relevance in the macrophage inflammatory response.

Toxicity Evaluation of a Non-Pain Pharmacopuncture Extract Using a Bacterial Reverse Mutation Test

  • Ji Hye Hwang;Chul Jung
    • 대한약침학회지
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    • 제27권2호
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    • pp.154-161
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    • 2024
  • Objectives: The objective of this study was to assess the genotoxicity of a no-pain pharmacopuncture (NPP) extract developed in 2022 using a bacterial reverse mutation assay, aiming to further substantiate the safety profile of NPP. Methods: The genotoxicity evaluation involved a bacterial reverse mutation assay to assess the mutagenic potential of NPP extracts with and without metabolic activation. Histidine-requiring Salmonella typhimurium strains (TA98, TA100, TA1535, and TA1537) and tryptophan-requiring Escherichia coli strains (WP2uvrA) were used in the assay. Results: The NPP extract did not induce a revertant colony count exceeding two times that of the negative control at any dose level in any of the tested strains, both with and without metabolic activation. Additionally, no growth inhibition or precipitation was observed in the presence of NPP. Conclusion: Based on the findings, it can be concluded that the NPP extract exhibited no mutagenic potential in the in vitro genotoxicity tests conducted.

AMP-activated protein kinase: An emerging target for ginseng

  • Jeong, Kyong Ju;Kim, Go Woon;Chung, Sung Hyun
    • Journal of Ginseng Research
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    • 제38권2호
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    • pp.83-88
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    • 2014
  • The adenosine monophosphate (AMP)-activated protein kinase (AMPK) is a key sensor of cellular energy. Once activated, it switches on catabolic pathways generating adenosine triphosphate (ATP), while switching off biosynthetic pathways consuming ATP. Pharmacological activation of AMPK by metformin holds a therapeutic potential to reverse metabolic abnormalities such as type 2 diabetes and nonalcoholic fatty liver disease. In addition, altered metabolism of tumor cells is widely recognized and AMPK is a potential target for cancer prevention and/or treatment. Panax ginseng is known to be useful for treatment and/or prevention of cancer and metabolic diseases including diabetes, hyperlipidemia, and obesity. In this review, we discuss the ginseng extracts and ginsenosides that activate AMPK, we clarify the various mechanisms by which they achieve this, and we discuss the evidence that shows that ginseng or ginsenosides might be useful in the treatment and/or prevention of metabolic diseases and cancer.