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Sung, Kyung-Il,Ghassemi Nejad, Jalil,Hong, Seok-Man,Ohh, Sang-Jip,Lee, Bae-Hun,Peng, Jing-Lun,Ji, Do-Hyeon,Kim, Byong-Wan BioMed Central 2015 한국축산학회지 Vol.57 No.1
<P>A feeding trial was carried out to determine the effects of chromium methionine (Cr-Met) chelate and forage level over two years, 1<SUP>st</SUP> fattening and 2<SUP>nd</SUP> fattening period on growth parameters, carcass characteristics and blood metabolites of 46 Korean native (Hanwoo, Bos Taurus, BW = 183 ± 44 kg) steers. Treatments were: 1) Steers in the low forage (LF) group were fed diets that consisted of 60% concentrate and 40% forage; 2) Steers in the high forage (HF) group were fed diets that consisted of 40% concentrate and 60% forage. Following the 1<SUP>st</SUP> fattening period, steers (BW = 480 ± 37.6 kg) were randomly assigned to four treatment groups: LF (40 F plus no Cr-Met supplementation in the 2<SUP>nd</SUP> fattening period), LFCM (40LF plus added 400 ppb of Cr-Met during the 2<SUP>nd</SUP> fattening period), HF (60 F plus no added Cr-Met during the 2<SUP>nd</SUP> fattening period) and HFCM (60 F plus added 400 ppb of Cr-Met in the 2<SUP>nd</SUP> fattening period). Dry matter intake of the treatment diets did not differ during the raising and 1<SUP>th</SUP> fattening period (P > 0.05). The ADG in the raising period showed no difference between the 40 F and 60 F groups (P > 0.05). Carcass characteristics including rib-eye area and meat yield index were higher in HF than the other treatment groups (P < 0.05). The HF group tended to show a higher (P = 0.08) marbling score than the LF group whereas the HFCM group showed a higher marbling score than the LFCM group (P < 0.05). HDL was higher and LDL lower in groups fed with Cr-Met than in other groups whereas glucose showed the lowest value in HF group (P < 0.05). Triglyceride (TG), Cholesterol, PUN and total protein (TP) were the same among all treatment groups (P > 0.05). The Insulin concentration in the blood was significantly higher for the HFCM group than for the LF, LFCM and HF groups (P < 0.05). It is concluded that supplementation of chromium-methionine chelate could improve meat quality in beef steers.</P>
Sung, Kyung-Il,Nejad, Jalil Ghassemi,Hong, Seok-Man,Ohh, Sang-Jip,Lee, Bae-Hun,Peng, Jing-Lun,Ji, Do-Hyeon,Kim, Byong-Wan Korean Society of Animal Science and Technology 2015 한국축산학회지 Vol.57 No.3
A feeding trial was carried out to determine the effects of chromium methionine (Cr-Met) chelate and forage level over two years, $1^{st}$ fattening and $2^{nd}$ fattening period on growth parameters, carcass characteristics and blood metabolites of 46 Korean native (Hanwoo, Bos Taurus, $BW=183{\pm}44kg$) steers. Treatments were: 1) Steers in the low forage (LF) group were fed diets that consisted of 60% concentrate and 40% forage; 2) Steers in the high forage (HF) group were fed diets that consisted of 40% concentrate and 60% forage. Following the $1^{st}$ fattening period, steers ($BW=480{\pm}37.6kg$) were randomly assigned to four treatment groups: LF (40 F plus no Cr-Met supplementation in the $2^{nd}$ fattening period), LFCM (40LF plus added 400 ppb of Cr-Met during the $2^{nd}$ fattening period), HF (60 F plus no added Cr-Met during the $2^{nd}$ fattening period) and HFCM (60 F plus added 400 ppb of Cr-Met in the $2^{nd}$ fattening period). Dry matter intake of the treatment diets did not differ during the raising and $1^{th}$ fattening period (P > 0.05). The ADG in the raising period showed no difference between the 40 F and 60 F groups (P > 0.05). Carcass characteristics including rib-eye area and meat yield index were higher in HF than the other treatment groups (P < 0.05). The HF group tended to show a higher (P = 0.08) marbling score than the LF group whereas the HFCM group showed a higher marbling score than the LFCM group (P < 0.05). HDL was higher and LDL lower in groups fed with Cr-Met than in other groups whereas glucose showed the lowest value in HF group (P < 0.05). Triglyceride (TG), Cholesterol, PUN and total protein (TP) were the same among all treatment groups (P > 0.05). The Insulin concentration in the blood was significantly higher for the HFCM group than for the LF, LFCM and HF groups (P < 0.05). It is concluded that supplementation of chromium-methionine chelate could improve meat quality in beef steers.
EVOLUTION OF RELATIVE MAGNETIC HELICITY AND CURRENT HELICITY IN NOAA ACTIVE REGION 11158
Jing, Ju,Park, Sung-Hong,Liu, Chang,Lee, Jeongwoo,Wiegelmann, Thomas,Xu, Yan,Deng, Na,Wang, Haimin IOP Publishing 2012 ASTROPHYSICAL JOURNAL LETTERS - Vol.752 No.1
<P>Both magnetic and current helicities are crucial ingredients for describing the complexity of active-region magnetic structure. In this Letter, we present the temporal evolution of these helicities contained in NOAA active region 11158 during five days from 2011 February 12 to 16. The photospheric vector magnetograms of the Helioseismic and Magnetic Imager on board the Solar Dynamic Observatory were used as the boundary conditions for the coronal field extrapolation under the assumption of nonlinear force-free field, from which we calculated both relative magnetic helicity and current helicity. We construct a time-altitude diagram in which altitude distribution of the magnitude of current helicity density is displayed as a function of time. This diagram clearly shows a pattern of upwardly propagating current helicity density over two days prior to the X2.2 flare on February 15 with an average propagation speed of similar to 36 m s(-1). The propagation is synchronous with the emergence of magnetic flux into the photosphere, and indicative of a gradual energy buildup for the X2.2 flare. The time profile of the relative magnetic helicity shows a monotonically increasing trend most of the time, but a pattern of increasing and decreasing magnetic helicity above the monotonic variation appears prior to each of two major flares, M6.6 and X2.2, respectively. The physics underlying this bump pattern is not fully understood. However, the fact that this pattern is apparent in the magnetic helicity evolution but not in the magnetic flux evolution makes it a useful indicator in forecasting major flares.</P>
Jing Hui Feng,Seung Hwan Hwang,Youn Gil Kwak,Min-Jung Kim,Jeong Hun Jo,Soon Sung Lim,Hong Won Suh 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Agrimonia pilosa Ledeb, as a traditional medicine, has been reported to be widely used on anti-inflammatory activity in many studies, as well as Salvia miltiorrhiza Bunge. Previously, we have reported that the mixture extract (ME) from Agrimonia pilosa Ledeb (AP) and Salvia miltiorrhiza Bunge (SM) could produce an antinociceptive effect in the gout arthritis model. Also, the Perna canaliculus extracts (PCE) has well-known anti-inflammatory and anti-arthritis effects. Then, in the present study, we aimed to investigate the potential anti-inflammatory and antinociceptive effects of the ME by using in vitro and in vivo models. At the same time, we project to compare with the PCE, which as a positive control. Results showed that both the once or continuously one-week treatment of the ME or the PCE reduced the pain threshold in a dose-dependent manner in the mono-iodoacetate (MIA)-induced arthritis model. However, we found that at the same dose of the ME and PCE, ME showed more and earlier effectiveness than the PCE. Both the ME and PCE also suppressed the plasma TNF-α, IL-6, and CRP expression in the MIA-induced arthritis model. Additionally, the release of nitric oxide (NO) and IL-6 were inhibited by the ME and the PCE in a dose-dependent manner in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. Moreover, TNF-α and MAPKs proteins expression were down-regulated by the ME and the PCE in LPS-stimulated RAW 264.7 cells. Furthermore, in the other in vivo assay, the change of ear weight in croton oil-induced ear edema model in mice was significantly reduced by treatment with the ME or the PCE at equally efficacy. Therefore, we suggest that the ME from AP and SM possesses anti-inflammatory and antinociceptive effects which indicate AP and SM could be a potential candidate for arthritis or ear edema treatment.
CD44-positive cells are responsible for gemcitabine resistance in pancreatic cancer cells
Hong, Sung Pil,Wen, Jing,Bang, Seungmin,Park, Seungwoo,Song, Si Young Wiley Subscription Services, Inc., A Wiley Company 2009 International journal of cancer: Journal internati Vol.125 No.10
<P>Accumulating evidence suggests that tumors are composed of a heterogeneous cell population with a small subset of cancer stem cells (CSCs) that sustain tumor formation and growth. Recently, there have been efforts to explain drug resistance of cancer cells based on the concept of CSCs having an intrinsic detoxifying mechanism. In the present study, to investigate the role of CSCs in acquiring chemoresistance in pancreatic cancer, gemcitabine-resistant cells were established by exposure to serially escalated doses of gemcitabine in HPAC and CFPAC-1 cells. Gemcitabine-resistant cells were more tumorigenic in vitro and in vivo, and had greater sphere-forming activity than parental cells. After high-dose gemcitabine treatment to eliminate most of the cells, CD44<SUP>+</SUP> cells proliferated and reconstituted the population of resistant cells. CD44<SUP>+</SUP>CD24<SUP>+</SUP>ESA<SUP>+</SUP> cells remained as a small subset in the resistant cell population. Among ATP-binding cassette (ABC) transporters, which are known as the mechanism of drug resistance in CSCs, ABCB1 (MDR1) was significantly augmented during the acquisition of drug resistance. ABC transporter inhibitor verapamil resensitized the resistant cells to gemcitabine in a dose-dependent manner and RNA interference of CD44 inhibited the clonogenic activity of resistant cells. In human pancreatic cancer samples, CD44 expression was correlated with histologic grade and the patients with CD44-positive tumors showed poor prognosis. These data indicate that cancer stem-like cells were expanded during the acquisition of gemcitabine resistance and in therapeutic application, targeted therapy against the CD44 or ABC transporter inhibitors could be applied to overcome drug resistance in the treatment of pancreatic cancer. © 2009 UICC</P>
( Hui Jing Han ),( Mei Li ),( Jong Keun Son ),( Chang Seob Seo ),( Seung Won Song ),( Sang Hyun Kwak ),( Hong Beom Bae ) 영남대학교 약품개발연구소 2013 영남대학교 약품개발연구소 연구업적집 Vol.23 No.0
Previous studies have shown that sauchinone modulates the expression of inflammatory mediators through mitogen-activated protein kinase (MAPK) pathways in various cell types. However, little information exists about the effect of sauchinone on neutrophils, which play a crucial role in inflammatory process such as acute lung injury (ALI). We found that sauchinone decreased the phosphorylation of p38 MAPK in lipopolysaccharide (LPS)-stimulated murine bone marrow neutrophils, but not ERK1/2 and JNK. Exposure of LPS-stimulated neutrophils to sauchinone or SB203580, a p38 inhibitor, diminished production of tumor necrosis factor (TNF)-α and macrophage inflammatory protein (MIP)-2 compared to neutrophils cultured with LPS. Treatment with sauchinone decreased the level of phosphorylated ribosomal protein S6 (rpS6) in LPS-stimulated neutrophils. Systemic administration ofsauchinone to mice led to reduced levels of phosphorylation of p38 and rpS6 in mice lungs given LPS, decreased TNF-α and MIP-2 production in bronchoalveolar lavage fluid, and also diminished the severity of LPS-induced lung injury, as determined by reduced neutrophil accumulation in the lungs, wet/dry weight ratio, and histological analysis. These results suggest that sauchinone diminishes LPS-induced neutrophil activation and ALI. ⓒ2013 Elsevier B.B.All rights reserved.