• Title/Summary/Keyword: Gyeong-Gi

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HD047703, a New Promising Anti-Diabetic Drug Candidate: In Vivo Preclinical Studies

  • Kim, SoRa;Kim, Dae Hoon;Kim, Young-Seok;Ha, Tae-Young;Yang, Jin;Park, Soo Hyun;Jeong, Kwang Won;Rhee, Jae-Keol
    • Biomolecules & Therapeutics
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    • v.22 no.5
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    • pp.400-405
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    • 2014

  • G-protein coupled receptor 119 (GPR119) has emerged as a novel target for the treatment of type 2 diabetes mellitus. GPR119 is involved in glucose-stimulated insulin secretion (GSIS) from the pancreatic b-cells and intestinal cells. In this study, we identified a novel small-molecule GPR119 agonist, HD047703, which raises intracellular cAMP concentrations in pancreatic ${\beta}$-cells and can be expected to potentiate glucose-stimulated insulin secretion from human GPR119 receptor stably expressing cells (CHO cells). We evaluated the acute efficacy of HD047703 by the oral glucose tolerance test (OGTT) in normal C57BL/6J mice. Then, chronic administrations of HD047703 were performed to determine its efficacy in various diabetic rodent models. Single administration of HD047703 caused improved glycemic control during OGTT in a dose-dependent manner in normal mice, and the plasma GLP-1 level was also increased. With respect to chronic efficacy, we observed a decline in blood glucose levels in db/db, ob/ob and DIO mice. These results suggest that HD047703 may be a potentially promising anti-diabetic agent.

  • https://doi.org/10.4062/biomolther.2014.035 인용 PDF KSCI KPUBS

A Study on the Total Mercury (Hg) Monitoring and Methylmercury (MeHg) Analysis method and Exposure Assessment of Methylmercury (MeHg) in Marine Products (수산물 중 총수은 모니터링 및 메틸수은 분석법 고찰)

  • Kwak, Shin-Hye;Kim, Ki-Cheol;Kim, Kyung-A;Kang, Suk-Ho;Kwon, Hye-Jung;Cho, Yun-Sik;Kang, Kyung-Ja;Lee, Pil-Suk;Cho, Wook-Hyun;Moh, Ara;Park, Yong-Bae;Yoon, Mi-Hye
    • Journal of Food Hygiene and Safety
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    • v.33 no.3
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    • pp.168-175
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    • 2018

  • The use of microwave-assisted extraction and an acid-base clean-up process to determine the amount of methylmercury (MeHg) in marine products was suggested in order to improve the complicated sample preparation process. The optimal conditions for microwave-assisted extraction was developed by using a 10% NaCl solution as an extraction solution, setting the extraction temperature at $50^{\circ}C$, and holding for 15 minutes to extract the MeHg in marine products. A NaOH solution was selected as a clean-up substitute instead of L-cysteine solution. Overall, 670 samples of marine products were analyzed for total mercury (Hg). Detection levels were in the range of $0.0006{\sim}0.3801{\mu}g/kg$. MeHg was analyzed and compared using the current food code and the proposed method for 49 samples which contained above 0.1 mg/kg of Hg. Detection ranges of methylmercury followed by the Korea Food Code and the proposed method were $75.25(ND{\sim}516.93){\mu}g/kg$ and $142.07(100.14{\sim}244.55){\mu}g/kg$, respectively. The total analytical time of proposed method was reduced by more than 25% compared with the current food code method.

  • https://doi.org/10.13103/JFHS.2018.33.3.168 인용 PDF KSCI

A Study on Heavy Metals and Selenium Contents of Seafoods Commonly Consumed in Gyeonggi-Do (경기도내 유통 다소비 생선류의 중금속 및 셀레늄 함량)

  • Cho, Yun-Sik;Kim, Ki-Cheol;Kim, Kyung-A;Kang, Suk-Ho;Jung, You-Jung;Kwak, Shin-Hye;Lee, Pil-Suk;Lee, Woon-Hyung;Moh, Ara;Yong, Kum-Chan;Yoon, Mi-Hye
    • Journal of Food Hygiene and Safety
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    • v.32 no.3
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    • pp.211-216
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    • 2017

  • A total of 100 seafoods commonly consumed in Gyeonggi-do were investigated to determine the concentration of lead (Pb), total mercury (Hg), methyl mercury (MeHg), cadmium (Cd) and selenium (Se). Concentration of heavy metals and selenium was measured by using mercury analyzer, ICP-MS and GC-ECD. The average content (mg/kg) of heavy metals in the seafood samples was as follows; Pb 0.0915 (0.0021-0.4490), Cd 0.0084 (ND-0.1773), and Hg 0.0412 (0.0013-0.3032). All the levels were below the recommended standards of the MFDS in Pb (0.5 mg/kg), Cd (0.2 mg/kg), Hg (0.5 mg/kg). The methylmercury was detected in the hairtail (0.0677 mg/kg) and cod (0.2941 mg/kg). After the average content of heavy metals in seafood was determined, the exposure assessment for heavy metals was conducted. Relative hazardous levels compared to PTWI were lower than the official standards of the JECFA for Pb (0.97%), Hg (3.42%) Cd (0.45%). In conclusion, the levels presented in this study are presumed to be safe for consumption.

  • https://doi.org/10.13103/JFHS.2017.32.3.211 인용 PDF KSCI