• Title/Summary/Keyword: EBI

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Ex vivo Boosted Immune Cell Therapy for Canine Hepatic Disease

  • Bae, Seulgi;Oh, Taeho
    • Journal of Veterinary Clinics
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    • v.38 no.4
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    • pp.179-183
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    • 2021
  • A 12-year-old male American Cocker Spaniel was diagnosed with a type of chronic hepatits (CH) called cholangioheaptits. Routine supportive medication was administered to the patient, and ex vivo boosted immune cell (EBI-C) therapy was used for the treatment. A histopathologic examination of the liver 19 months later revealed that the cholangiohepatitis had progressed to cholangiocarcinoma. The medication and immune cell therapy was maintained. Two months after the new diagnosis, the patient's state worsened, and the dog died 635 days after the first visit. EBI-C therapy is a type of immunotherapy, where immune cells are isolated from the patient's peripheral blood mononuclear cells, expanded ex vivo, and then infused into the patient intravenously every two weeks. EBI-Cs (mean: 2.78 × 108 cells) were obtained 38 times and infused every two weeks. Most EBI-C were T-lymphocytes (99.24% of total EBI cells). T-lymphocytes produce large interferon (IFN)-γ, and IFN-γ inhibits liver fibrosis in dogs with CH. Moreover, in bile duct cancer, an increase in T-lymphocytes correlates with decreasing tumor invasion and metastasis. Thus, we propose that EBI-C therapy is applicable as a new supportive therapy for canine liver disease if other treatments like drug medication, surgery, or radiation are unavailable.

Characteristics and Effects of Radiation Treatment on Wood Pulping Process (목재 펄프 제조 공정에서의 방사선 효과 및 특성)

  • Won, So Ra;Shin, Hye Kyoung;Jeun, Joon Pyo;Kang, Phil Hyun
    • Journal of Radiation Industry
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    • v.5 no.3
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    • pp.227-230
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    • 2011
  • Pulps were separated from wood chips using an Electron beam irradiation (EBI) treatment without a NaOH-AQ (anthraquinone) treatment for cooking. The methods were based on a hot water treatment after EBI and two-step bleaching processes. Chemical compositions and FT-IR spectroscopy demonstrated that the content of lignin and hemicellulose in the bleached wood pulps treated with various EBI dose decreased with an increase of EBI doses. Specifically, the lignin in the bleached with pulps treated at 600 kGy of EBI dose was almost completely removed. Moreover, TGA analysis showed that a thermal stability increased with increasing the content of cellulose but the lignin decomposed slowly over the wide region.

Influence of oxidative atmosphere of the electron beam irradiation on cyclization of PAN-based fibers

  • Shin, Hye Kyoung;Park, Mira;Kim, Hak-Yong;Park, Soo-Jin
    • Carbon letters
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    • v.16 no.3
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    • pp.219-221
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    • 2015
  • In order to study the impact of atmosphere during electron beam irradiation (EBI) of polyacrylonitrile (PAN) precursor fibers, the latter were stabilized by EBI in both air and oxygen atmospheres. Gel-fraction determination indicated that EBI-stabilization under an oxygen atmosphere leads to an enhanced cyclization in the PAN fibers. In the Fourier-transform infrared spectroscopy analysis, the PAN fibers stabilized by EBI under an oxygen atmosphere exhibited a greater decrease in the peak intensity at 2244 cm−1 (C≡N vibration) and a greater increase in the peak intensity at 1628 cm−1 (C=N absorption) than the corresponding PAN fibers stabilized under an air atmosphere. From the X-ray diffraction analysis it was found that oxygen uptake in PAN fibers leads to an increase in the amorphous region, produced by cyclization.

Monitoring of Ergosterol Biosynthesis Inhibitor (EBI) Pesticide Residues in Commercial Agricultural Products and Risk Assessment (국내 유통 농산물 중 EBI계 농약 모니터링과 위해도 평가)

  • Lee, Hee-Jung;Choe, Won-Jo;Lee, Ju-Young;Cho, Dae-Hyun;Kang, Chan-Soon;Kim, Woo-Seong
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.38 no.12
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    • pp.1779-1784
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    • 2009
  • Establishment of simultaneous analysis method and monitoring for individually analyzing residual eight ergosterol biosynthesis inhibitors, EBI (difenoconazole, diniconazole, fenarimol, fenbuconazole, hexaconazole, myclobutanil, nuarimol and paclobutrazol) pesticides in commercial agricultural products, were conducted. The simultaneous analysis method for the pesticides was established using a GC/MS/MS for EBI pesticides. Residual amount of those pesticides were investigated in 989 commercial agricultural products (fifteen kinds of cereal grains, vegetables, beans, nuts, fruits and mushrooms) from seven metropolitan cities and eight provinces. In EBI pesticides analysis, linearity of GC/MS/MS analysis was 0.9974-0.9992, and that of recoveries were 86-135% with relative standard deviations (RSD) <20%. The limit of quantification (LOQ) of the method ranged from 0.5 to 5.0 mg/kg for eight EBI pesticides. According to the monitoring of the EBI pesticides in commercial agricultural products, difenoconazole, fenarimol, hexaconazole showed various residual levels (total frequency of 8/989 detection, 0.8%). Paclobutrazole showed in excess levels of the MRLs (maximum residue limits) for pesticides in one chard sample by the Korea Food Code. As a result of exposure assessment on the detected 8 individual pesticides, all pesticides (difenoconazole, fenarimol, hexaconazole, paclobutrazole) were evaluated as safe level in comparison to toxicologically acceptable daily intake.

IL-35 Over-expression is Associated with Genesis of Gastric Cancer

  • Fan, Yong-Gang;Zhai, Jing-Ming;Wang, Wei;Feng, Bing;Yao, Guo-Liang;An, Yan-Hui;Zeng, Chao
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.7
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    • pp.2845-2849
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    • 2015
  • Overexpression of interleukin (IL)-35 has been found in a variety of malignancies, but the expression status in gastric cancer has yet to be elucidated clearly. In the present study, positive expression of EBI3 and p35 was 63.3% and 70.0% of cases, respectively. EBI3 expression was strongly related with larger tumor size and invasion depth (P<0.05). Similarly, expression of p35 was also correlated with larger tumor size (P<0.05). These results indicate that IL-35 might be involved in growth of gastric cancer. Interestingly, EBI3 and p35 expressions were positive correlated with Ki-67 expression. Moreover, EBI3 immunoreactivity was associated with Bcl-2 staining. Our data suggest IL-35 is correlated with genesis of gastric cancer by regulating growth and apoptosis.

Response of Colletotrichum sup. Causing Red Pepper Anthracnose to Protective and Ergosterol Biosynthesis-inhibiting Fungicides (보호용 살균제와 ergosterol 생합성 저해 살균제에 대한 고추 탄저병균의 약제 반응)

  • Kim Joon Tae;Lee Kyeong Hee;Min Ji Young;Kang Beum Kwan;Rho Chang Woo;Hong Seong Taek;Kim Heung Tae
    • Research in Plant Disease
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    • v.11 no.2
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    • pp.185-192
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    • 2005
  • In 1999 and 2002, 130 and 258 isolates of Colletotrichum spp. causing red pepper anthracnose were obtained from infected red pepper fruits, respectively. Their responses to 4 protective and 3 ergosterol biosynthesis-inhibiting(EBI) fungicides were investigated by observing their mycelial growth on PDA incorporated with different concentrations of each fungicide. The Colletotrichum isolates obtained in 1999 showed higher $EC_{50}$ values than those isolated in 2002 against three protective fungicides such as dithianon, chlorothalonil, and propineb, whereas the response was reversed toward other protective fungicide, iminoctadine. On the other hand, the isolates of year 1999 were more resistant against three EBI fungicides such as tebuconazole, hexaconazole, and prochloraz than those of year 2002; the $EC_{50}$ values of the former were 1.2-4.4 times higher than those of the latter, The responses of the Colletotrichum isolates toward protective and EBI fungicides were fluctuated according to regions, where the infected fruits were collected. On the other hand, the resis tance of Colletotrichum isolates to protective fungicides increased during monitoring from July to September, However, their responses towards EBI fungicides were not changed.

Polymerization of $\alpha$-Olefin Catalyzed by rac-(EBI) M($NMe_2$)$_2$(M=Zr, Hf)/$AlR_3$/[$Ph_3C$][$B(C_{6}F_{5})$)$_4$] (rac-(EBI) M($NMe_2$)$_2$(M=Zr, Hf)/$AlR_3$/[$Ph_3C$[$B(C_{6}F_{5})$)$_4$ 촉매를 이용한 $\alpha$-올레핀의 중합)

  • Kim, Il;Choi, Chang-Soo;Kim, Ki-Tae
    • Polymer(Korea)
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    • v.24 no.5
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    • pp.646-655
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    • 2000
  • Polymerizations of higher $\alpha$-olefins were carried out in toluene by using highly isospecific catalyst, rac-(EBI)M(NMe$_2$)$_2$ (EBI=1,2-ethylenebis-(1-indenyl); M=Zr(rac-1); M=Hf(rac-2)) In the presence of Al(i-Bu)$_3$/[Ph$_3$C][B($C_{6}F_{5}$)$_4$]. The polymerization of high $\alpha$-olefin showed high activity and similar polymerization behavior. The polymerization activity was affected by both monomer size and lateral size of polymer chain. The conversion of monomer to polymer decreases with the increased lateral size in the order of 1-pentene>1-hexene>1-octene>1-decene. The same dependences of melting behavior and intrinsic viscosity of polyolefin on lateral size were observed according to the results obtained by differential scanning calorimetry and intrinsic viscosity. All poly($\alpha$-olefin)s showed very high isotacticity (triad) and the isotacticity increases in the order of poly(1-pentene)$^1H$ NMR and Raman spectra analysis showed that chain transfer to cocatalyst, which generates saturated methyl groups, Is a main chain termination. The $\beta$-hydride eliminations, which generate unsaturated vinylidene, tri-substituted, and vinylene end group. are found to be minor chain terminations.

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Copolymerizations of Ethylene with 1-Hexene over ansa-Metallocene Diamide Complexes

  • Kim, Il;Kwak, Chang-Hun;Son, Gi-Wan;Kim, Jae-Sung;Sinoj Abraham;Bijal K. B.;Ha, Chang-Sik;Kim, Bu-Ung;Jo, Nam-Ju
    • Macromolecular Research
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    • v.12 no.3
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    • pp.316-321
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    • 2004
  • We have performed copolymerizations of ethylene with 1-hexene using various ansa-metallocene compounds in the presence of the non-coordinative [CPh$_3$][B(C$\_$6/F$\_$5/)$_4$ion pair as a cocatalyst. The metallocenes chosen for this study are isospecific metallocene diamide compounds, rac-(EBI)Zr(NMe$_2$)$_2$ [1, EBI = ethylene-l ,2-bis(1-indenyl)], rac-(EBI)Hf(NMe$_2$)$_2$ (2), rac-(EBI)Zr(NC$_4$H$\_$8/)$_2$ (3), and rac-(CH$_3$)$_3$Si(1-C$\_$5/H$_2$-2-CH$_3$-4-$\^$t/C$_4$H$\_$9/)2 Zr(NMe$_2$)$_2$ (4), and syndiospecific metallocene dimethyl compounds, ethylidene(cyclopentadienyl)(9-fluorenyl) ZrMe$_2$ [5, Et(Flu)(Cp )ZrMe$_2$] and isopropylidence (cyclopentadienyl)(9-fluorenyl)ZrMe$_2$ [6, iPr(Flu)(Cp)ZrMe$_2$]. The copolymerization rate decreased in the order 4 >1-3>2 >5>6. The reactivity of I -hexene decreased in the order 2 >6>1- 3-5> 4. We characterized the microstructure of the resulting poly(ethylene-co-l-hexene) by $\^$l3/C NMR spectroscopy and investigated various other properties of the copolymers in detail.

Capability for Change at Community Health Centers Serving Asian Pacific Islanders: An Exploratory Study of a Cancer Screening Evidence-based Intervention

  • Sohng, Hee Yon;Kuniyuki, Alan;Edelson, Jane;Weir, Rosy Chang;Song, Hui;Tu, Shin-Ping
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.12
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    • pp.7451-7457
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    • 2013
  • Background: Understanding and enhancing change capabilities, including Practice Adaptive Reserve (PAR), of Community Health Centers (CHCs) may mitigate cancer-related health disparities. Materials and Methods: Using stratified random sampling, we recruited 232 staff from seven CHCs serving Asian Pacific Islander communities to complete a self-administered survey. We performed multilevel regression analyses to examine PAR composite scores by CHC, position type, and number of years worked at their clinic. Results: The mean PAR score was 0.7 (s.d. 0.14). Higher scores were associated with a greater perceived likelihood that clinic staff would participate in an evidence-based intervention (EBI). Constructs such as communication, clinic flow, sensemaking, change valence, and resource availability were positively associated with EBI implementation or trended toward significance. Conclusions: PAR scores are positively associated with perceived likelihood of clinic staff participation in cancer screening EBI. Future research is needed to determine PAR levels most conducive to implementing change and to developing interventions that enhance Adaptive Reserve.

Facile preparation of self-assembled wool-based graphene hydrogels by electron beam irradiation

  • Park, Mira;Pant, Bishweshwar;Choi, Jawun;Park, Yong Wan;Lee, Chohye;Shin, Hye Kyoung;Park, Soo-Jin;Kim, Hak-Yong
    • Carbon letters
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    • v.15 no.2
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    • pp.136-141
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    • 2014
  • Three dimensional self-assembled graphene hydrogels were easily fabricated by electron beam irradiation (EBI) using an aqueous solution of wool/poly(vinyl alcohol) and graphene oxide (GO). After exposure to various levels of EBI radiation, the highly porous, self-assembled, wool-based graphene hydrogels were characterized using scanning electron microscopy and Fourier-transform infrared spectroscopy; to determine the gel fraction, degree of swelling, gel strength, kinetics-of-swelling analyses and removal of hexavalent chromium (Cr(VI)) from the aqueous solution. X-ray diffraction results confirmed that EBI played a significantly important role in reducing GO to graphene. The adsorption equilibrium of Cr(VI) was reached within 80 min and the adsorption capacity was dramatically increased as the acidity of the initial solution was decreased from pH 5 to 2. Changes in ionic strength did not exert much effect on the adsorption behavior.