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Antioxidant and QR Inductive Activities of Novel Functional Soybean ‘Agakong3’
Kang-Mo Ku,Min-Gun Kim,Mi-Jeong Hong,Yeon-Shin Jeong,Jeong-Sang Kim,In-Jung Lee,Dong-Hyun Shin,Young-Hyun Hwang,Young-Hwa Kang 한국식품과학회 2009 Food Science and Biotechnology Vol.18 No.3
In order to evaluate the bioactivity of ‘Agakong3’, which was newly bred, quinone reductase (QR) inductive activity and antioxidant activity were both assessed. The methanol extract of ‘Agakong3’ showed a significantly stronger QR inductive activity than other soybeans. The methanol extract of ‘Agakong3’ also showed a significantly stronger cytotoxicity on hepa1c1c7 than other soybeans. ‘Agakong3’ exhibited the most potent antioxidant activity in the Trolox equivalent antioxidant capacity (TEAC) assay whereas it showed significantly weak antioxidant in the DPPH assay. In total phenol and flavonoid contents, ‘Agakong3’ showed the highest contents regarding phenol and flavonoid compounds. Major isoflavones such as daidzein and genistein were quantitified by high performance liquid chromatography. ‘Agakong3’ also showed the highest total isoflavone contents. Results of correlation analysis showed that there were high correlation coefficients between the contents of isoflavone and TEAC and the contents of isoflavone and QR inductive activity, respectively. These results suggest that ‘Agakong3’ will be a promising and functional food material.
Kang, Sang-Mo,Waqas, Muhammad,Hamayun, Muhammad,Asaf, Sajjad,Khan, Abdul Latif,Kim, Ah-Yeong,Park, Yeon-Gyeong,Lee, In-Jung Informa UK (TaylorFrancis) 2017 Journal of plant interactions Vol.12 No.1
<P>Beneficial bacteria living in the rhizosphere pose several implications on plant growth promotion and are highly desirable for sustainable agriculture. In the current study, we explored the ameliorative capacity of Leifsonia xyli SE134, a plant growth-promoting rhizobacteria (PGPR), against copper (Cu) stress on tomato grown under elevated Cu levels of 50 and 100 mM. Initially, L. xyli SE134 modulated innate gibberellins (GAs) and indole-3-acetic acid (IAA) metabolism in response to elevated Cu toxicity. The IAA contents increased, whereas that of bioactive GAs decreased in relation to Cu concentration gradient in the broth media. Furthermore, exposure to elevated Cu caused detrimental effects on the physiological attributes as revealed by attenuated shoot length, root length, stem diameter, shoot dry weight, root dry weight, and chlorophyll content in noninoculated tomatoes as compared to L. xyli SE134 inoculated plants. The growth rescuing effect of L. xyli SE134 may be attributed to the modulation of endogenous amino acids contents in plants, such as glutamic acid, threonine, phenylalanine, glycine, proline, and arginine. Moreover, L. xyli SE134 inoculation stimulated total polyphenol and flavonoid content, reduced super oxide dismutase activity, strongly inhibited Cu, and increased phosphorus and iron content in plants grown under elevated Cu stress. In the absence of Cu toxicity, L. xyli SE134 significantly enhanced amino acid content, improved total flavonoids, and increased phosphorus content, thus resulting in higher plant growth.</P>
Kang, Taegyu,Jeong, Sinyoung,Kang, Homan,Kim, Jaehi,Kim, Hyung-Mo,Kyeong, San,Lee, Sang Hun,Jeong, Dae Hong,Jun, Bong-Hyun,Lee, Yoon-Sik Elsevier 2015 Journal of industrial and engineering chemistry Vol.32 No.-
<P><B>Abstract</B></P> <P>Surface-enhanced Raman scattering (SERS) has received much attention due to ultra-high sensitivity in detection of biological and chemical analytes. When SERS is used as tagging probe, several strong points such as high sensitivity and multiplexing capability can resolved several key issues with current optical tagging materials. Our group has reported synthesis of silica-coated silver nanoparticles (NPs) embedded silica NPs (SERS Dots) for bio-applications. Here, we designed and synthesized a new type of hollow-shell type SERS active NP (yolk–shell SERS Dots), which are aggregated silver NPs with a hollow silica nanostructure. The yolk–shell SERS Dots were prepared by adding NaBH<SUB>4</SUB> to SERS Dots, resulting in the prepared NPs exhibiting 2.3 times stronger SERS signals due to aggregation of silver NPs inside the silica shells and generating several hot spots among those silver NPs. Moreover, biotin-conjugated yolk–shell type SERS dots successfully bound streptavidin-Cy5 to demonstrate the potential of yolk–shell SERS dots for bio-detection. These yolk–shell SERS Dots have great potential for bio-imaging and drug delivery applications.</P>
Sang Min Yoon,So Yeon Kim,Young-Suk Lim,Kang Mo Kim,Ju Hyun Shim,Danbi Lee,Jihyun An,Jinhong Jung,Jong Hoon Kim,Han Chu Lee 대한간학회 2020 Clinical and Molecular Hepatology(대한간학회지) Vol.26 No.4
Background/Aims: Stereotactic body radiation therapy (SBRT) is used as an alternative ablative treatment in patients with hepatocellular carcinoma (HCC) not suitable for curative treatments. The purpose of this prospective study was to evaluate the long-term efficacy of SBRT for small (≤5 cm) HCCs. Methods: A phase II, single-arm clinical trial on SBRT for small HCCs was conducted at an academic tertiary care center. The planned SBRT dose was 45 Gy with a fraction size of 15-Gy over 3 consecutive days. The primary endpoint was 2-year local control rate. Radiologic responses were assessed according to the Response Evaluation Criteria in Solid Tumors (RECIST, version 1.1) and the modified RECIST criteria. Results: Between 2013 and 2016, 50 patients (53 lesions) were enrolled, with a median follow-up period of 47.8 months (range, 2.9–70.6). Patients’ age ranged from 41 to 74 years, and 80% were male. Median tumor size was 1.3 cm (range, 0.7–3.1). The 2- and 5-year local control rates were 100% and 97.1%, respectively. The 5-year overall survival rate was 77.6%. Six months after SBRT, radiologic responses were evident in 44 lesions (83%) according to the RECIST criteria and 49 (92.4%) according to the modified RECIST criteria. None of the patients showed grade ≥3 adverse events. Conclusions: SBRT showed excellent results as an ablative treatment for patients with small HCCs while showing minimal toxicities. SBRT can be a good alternative for both curative and salvage intents in patients with HCCs that are unsuitable for curative treatments.