• Title/Summary/Keyword: $P_{180}$

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Derepression of a Methionine Biosynthetic Gene by Utilizing a Promoter Isolated from Corynebacterium glutamicum (Corynebacterium glutamicum에서 분리된 프로모터를 이용한 메치오닌 생합성 유전자의 조절해제)

  • Park Soo-Dong;Park Ik-Hyun;Choi Jong-Soo;Kim Il-Kwon;Kim Younhee;Lee Heung-Shick
    • Korean Journal of Microbiology
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    • v.41 no.4
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    • pp.300-305
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    • 2005
  • A transcriptionally active fragment $(P_{19})$ isolated by utilizing the promoter-probe shuttle vector pSK1Cat was analyzed. By subcloning analysis, the 180 bp region $(P_{180})$ responsible for the activity was determined. Transcriptional fusion of the C. glutamicum metX gene to $P_{180}\;(P_{180}-metX)$ resulted in a 24-fold increase in MetX activity in a complex medium, while a 13-fold increase was observed with the $P_{tac}$ promoter. Additionally, the expression conferred by $P_{180}$ was not affected by methionine added to the growth medium, suggesting that the $P_{180}$ clone is useful for the deregulated expression of biosynthetic genes in C. glutamicum during amino acid fermentation. Introduction of $P_{180}-metX$ into a lysine-producing C. glutamicum resulted in the production of methionine to 0.8 g/l.

Comparative Antitumor Activity of Water Extracts from Fruiting Body of Phellinus linteus, Phellinus baumii and Phellinus gilvus (Phellinus linteus, Phellinus baumii 및 Phellinus gilvus 자실체 추출물의 항암효과 비교)

  • 배재성;황미현;장광호;이만휘;이근우;조우식;최성국;윤효인;임종환
    • Toxicological Research
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    • v.20 no.1
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    • pp.37-42
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    • 2004
  • This study was undertaken to investigate comparative anti-tumor activity of water extracts of Phellinus gilvus (PGE), Phellinus linteus (PLE), and Phellinus baumii (PBE) in vitro. The anti-tumor activity in the present study was evaluated by sulforhodamine B (SRB) and microtetrazolium (MTT) assay in terms of cell survival level. The tumor cells (sarcoma 180 and P388) were treated with PGE, PLE, and PBE (7.5, 15, and 30 $\mu\textrm{g}$/ml) and Doxorubicin (DOX) (0.001~10 $\mu\textrm{M}$). The results showed that DOX, PGE, and PLE inhibited proliferation showing a dose-dependent manner against both tumor cells. However, PBE was inhibited by the only 30 $\mu\textrm{g}$/ml in both cells proliferation. In conclusion, all of PGE, PLE, and PBE used in this study have shown anti-tumor activity against both sarcoma 180 and P388. Among them, PLE was the most effective in anti-tumor activity against sarcoma 180 (p<0.05) and PGE was against P388 in SRB assay. PLE, however, was against P388 (p<0.05) in MTT assay.

Effects of Organic Iron Supplementation on Productivity and Egg Composition in Laying Hens (유기철의 첨가가 산란계의 생산성 및 난 성분에 미치는 영향)

  • 양철주;나상준;고석영;오종일;정대균;김해영;정일병;황보종;정완태
    • Korean Journal of Poultry Science
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    • v.31 no.2
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    • pp.101-108
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    • 2004
  • This study was conducted to evaluate the effect of iron reinforcing agent on the performance in laying hens for seven weeks. One hundred ninety eight 30-wk-old Brown Tetran layers were assigned to 9 treatments: control containing 45 mg Fe from iron sulfate per kg diet (FE-45), FE-90 (control multiplied two times), FE-180 (control multiplied four times), YM-45 containing 45mg Fe from yeast mutant, YM-90 (YM-45 multiplied two times), YM-180 (YM-45 multiplied four times), YF-45 containing 45mg Fe from ferritin containing yeast, YF-90 (YF-45 multiplied two times), YF-180 (YF-45 multiplied four times) in the experiment. Each treatment had four replications of 6 birds each. In the average egg production, the YF-180 was highest and the FE-45 (the control) was lowest; the YM-180, YF-90, and YF-180 were significantly (P<0.05) higher than the control. In the comparisons of egg weight and egg mass, the YF-180 was significantly higher (P<0.05) than the FE-90 or the control. In the FCR, the YM-90 was highest and the YF-45 was lowest. There was no significant difference between the control and YM-90 although the YF-45 was significantly (P<0.05) lower in FCR than the control. In the eggshell thickness, the YF-180 was the thickest and the FE-90 was the thinnest; the YF-45 or the YF-180 was significantly thicker (P<0.05) than the control. In the eggshell strength, the YF-45 was the strongest and the YM-45 was the weakest; the YM-90, YF-45, and YF-180 were significantly stronger (P<0.05) than the control. In the cholesterol level of egg yolk, the control (FE-45) was the highest and the YF-45 was the lowest; there was a significantly different (P<0.05) between these two treatments. In conclusion, in case of adding organic iron to feed for layers, it gives improvement on performance of layers and develop chemical composition of eggs.

The Study on Sarcoma-180 Anticancer Effects of Juglandis Semen Herbal-acupuncture(JsD) (호도약침(胡桃藥鍼)의 Sarcoma-180 항암효과(抗癌效果)에 관(關)한 실험적(實驗的) 연구(硏究))

  • Kang, Kye-Sung;Kwon, Ki-Rok;Choi, Sung-Mo;Lee, Seon-Goo
    • Journal of Pharmacopuncture
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    • v.5 no.1 s.8
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    • pp.43-52
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    • 2002
  • Objectives: This study was purposed to investigate the sarcoma-180 anticancer effects of Herbal acupuncture with Juglandis Semen(JsD) in mice. Methods: The Juglandis Semen Herbal-acupuncture was injected on Chung-wan(CV12) of mice with S-180 cancer cell line. Results: The results obtained were summarized as follows; 1. Median survival time of S-180 cancer cell treated with Juglandis Semen Herbal-Acupuncture was not significant.(p < 0.05) 2. Natural killer cell activity was insignificant for S-180 cell treated with Juglandis Semen Herbal-Acupuncture Herbal acupuncture. (P < 0.05) 3. Interleukin-2 productivity of S-180 cell treated with Juglandis Semen Herbal-Acupuncture was not significant.(P < 0.05) Conclusions: According to the results, we can conclude Herbal-acupuncture with Juglandis Semen caused no effects in S-180 cancer cell.

Effects on Growth Performance and Meat Quality Parameters by Restricted Diet during Finishing Days

  • Lee, S.D.;Song, Y.M.;Jin, S.K.;Ha, K.H.;Kim, I.S.;Kim, C.H.;Chowdappa, R.;Sonoda, T.;Song, R.D.
    • Asian-Australasian Journal of Animal Sciences
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    • v.18 no.9
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    • pp.1294-1298
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    • 2005
  • The objective of the present study was to investigate the effects on growth performance, meat quality parameters and fatty acids of meat by restricted diet amount on finishing Berkshires. A total of 180 pigs (Berkshire, initially 52 kg BW) at 100 days of age were allotted in arrangement in a completely randomized design (10 pigs per pen), blocked arrangement of treatments with 3 replications. The variables were market ages (180, 200 and 220 days) and in which was also included sex (gilts and barrow). All the pigs were restrictively fed so that day could be marked at 103 kg. Pork quality was evaluated from 4 pigs of each treatment. Average daily gain (ADG) and average daily feed intake (ADFI) were decreased (p<0.05) with age increase. The ratio of feed to gain was increased (p<0.05) at 200 and 220 days compared to that of 180 days. Moisture and crude protein of longissimus dorsi muscle (LM) at 180 days were increased (p<0.05) compared to 200 and 220 days. Crude fat was increased (p<0.05) by age and crude ash was lower (p<0.05) at 180 days than at 220 days. Red to green meat color scale (CIE a$^{*}$) increased (p<0.05) at 200 and 220 days more than at 180 days. Regarding fatty acid composition in meat, saturated fatty acids (SFA) was increased more (p<0.05) at 220 days than at 180 and 200 days. The results indicate that even with a restricted diet of low nutrient supplement, there was an improvement in Berkshire meat quality parameters.

Antitumor and immunomodulatory effects of a hot water extract of Phellinus baumii using Sarcoma-180 in the mouse (Pheflinus baumii 자실체 추출물의 Sarcoma-180 에 대한 항암 및 면역효과)

  • Ha, Hyo-Cheol;Kim, Hyun-Pyo;Sim, Ji Young;Chang, Yun-Hee;Kim, Hyun Su
    • Journal of Mushroom
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    • v.2 no.4
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    • pp.169-174
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    • 2004
  • A hot water extract(HWE-P4) was separated from the fruit bodies of PMO-P4, and its antitumor and immunomodulatory activities against sarcoma-180 in ICR mice were investigated. The internal transcribed spacer(ITS) regions from PMO-P4 were amplified using polymerase chain reaction(PCR) and sequenced. The results revealed that PMO-P4 was belong to the Phellinus baumii. When oral administration at the dose of 160mg/kg/day in the mice until the end of the experiment with 2 week's pre-feeding of the HWE-P4, the survival rate of the mice was 152% for 50days after the inoculation of sarcoma-180 and the suppression rate of the tumor growth was 35.3%(p<0.05) for 28 days after inoculation of sarcoma-180. The HWE-P4 increased 71.4% of the CD4/CD8 ratio and 5-fold of the expression of CD25(IL-2 receptor chain) compared with the control. From these results, the antitumor activity of HWE-P4 is exerted through its immunomodulating activity on the host's immune system.

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Influence of Shaft Length and Physical Condition on Golf Driving Performance according to Physical Condition (드라이버 샤프트 길이와 신체적 조건이 헤드스피드, 비거리 및 방향성에 미치는 영향)

  • Jeong, Cheol;Kim, Ji-Sun
    • Journal of the Korean Applied Science and Technology
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    • v.36 no.1
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    • pp.217-225
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    • 2019
  • The aim of this study was determine to effect of shaft length and physical condition on golf driving performance(head speed, distance and direction). A range of drivers with length between 44 inch, 45 inch and 46 inch limit imposed by R&A rules limited were assembled and evaluated. Club head speed and drive distance and accuracy were determined three category 27 PGA pro golfer (handicaps 0, and height $170cm{\geq}171-175{\geq}175-180cm$) who golf performance. As a results follow : Head speed was significantly difference with 44, 45 between 46inch(p<.01). Distance was significantly difference with 44 between 46inch(p<.05). And direction was significantly difference with 44, 45inch between 46inch(p<.05). Head speed according to height was general similarity among shaft length in 170cm, 171-175cm. Distance were general similarity among shaft length in 170cm, and significantly difference with 44inch between 46inch in 171-175cm(p<.01), and significantly difference with 45inch between 46inch in 176-180cm(p<.05). Direction were significantly difference with 44inch between 46inch in 170cm(p<.05), but do not significantly difference with 44inch between 46inch in 176-180cm, 176-180cm. These results show that shaft length and height can affect head speed, distance and direction.

Relative Genetic Effects of Duroc and Taoyuan Breeds on the Economic Traits of Their Hybrids

  • Yen, N.T.;Tai, C.;Cheng, Y.S.;Huang, M.C.
    • Asian-Australasian Journal of Animal Sciences
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    • v.14 no.4
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    • pp.447-454
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    • 2001
  • For determining the relative genetic effects of Duroc (D) and Taoyuan (T) breeds on the economic traits of their hybrids, 72 litters of pigs, from four mating types, namely TT (T♂$\times$T♀), DD (D♂$\times$D♀) and D-T hybrids (TD, T♂$\times$D♀ and DT, D♂$\times$T♀) were used in this study. The various crossbreeding parameters were estimated by comparisons among mating types using linear contrasts of least-square analysis. The results of reproductive traits analysis showed that T breed had contributed superior genetic effects on the total number of piglets at birth (TBN) (p<0.10) and number of live piglets at 21 days (LP21) (p<0.05) to the D-T hybrids. Estimates of maternal genetic effects showed that the T females were superior in TBN (p<0.05), but inferior in average birth weight (ABW) and average litter birth weight (LBW) (p<0.01) to the D females. Direct heterosis effects were significant for LBW, LP21 and LWT21 (p<0.01). Least-squares analysis of other economic traits showed that T breed had relative negative effects on all growth traits, withers height (WH), body type index (BTI), average backfat thickness (ABF), carcass length (LENG), loin eye area (longissimus) (LEARA), and lean percentage (LEAN) of D-T hybrids (p<0.05). Estimates of direct genetic effects showed that the D breed was superior to the T breed in all growth and carcass traits except the average backfat (BF). Estimates of maternal genetic effects showed that average body weight at 180 days (WT180) of progenies from T sows were lighter than from D sows. Progenies from D females had larger and leaner carcass than those from T females. Direct heterosis effects were significant for average daily weight gains from 150 to 180 days ($ADG_{150-180}$) (p<0.05) and for average body weights at 150 (WT150), and 180 days (WT180), average daily weight gains from birth to 150 and 180 days ($ADG_{150}$ and $ADG_{180}$, respectively), WH, body length (BL), ABF, BTI, and LENG (p<0.01). The results showed that D-T hybrids tended to have superior TBN and LP21 than D breed, and to be superior in all growth and most conformation and carcass traits to the T breed.