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  • 大澤 康次, 幡野 恵, 西宮 一尋, 岡崎 彬, 太田 真一, 宇田 文昭, 柳田 由紀, 檜垣 洋子, 吉田 知江里
    薬物動態
    1988年 3 巻 4 号 441-446
    発行日: 1988年
    公開日: 2007/03/29
    ジャーナル フリー
    ラットに
    3H
    -CU-
    83
    (S)を25μg/kgで静脈内あるいは経口投与し,血液中濃度および尿糞中排泄を検討した.
    静脈内投与後の血液中濃度推移は投与後5分より上昇し,投与後45分に25.74ng eq./mlのCmaxを示し,それ以後t1/2
    3
    .05時間とt1/2 33.09時間の二相で減少した.投与後72時間までのAUCは135.42ng eq.·hr/mlであった.
    経口投与では,投与後
    3
    時間でCmax 4.10ng eq./mlに達し,以後t1/2α 4.46時間とt1/2β 26.
    83
    時間の二相で減少した.投与後72時間までのAUCは48.62ng eq.·hr/mlであった.
    静脈内投与と経口投与のいずれの場合も,尿および糞中への放射能の排泄は,投与後48時間でほぼ終了した.静脈内投与では,投与後72時間までに投与量の30.52%が尿中に,60.42%が糞中に排泄された.経口投与では,同じく72時間までに40.34%が尿中に,69.24%が糞中に排泄された.
  • E. camaldulensis, E. globulus における容積重, および材形質含量の樹幹内変異と標準値を示す位置について
    小名 俊博, 園田 哲也, 伊藤 一弥, 柴田 勝
    紙パ技協誌
    1995年 49 巻 8 号 1227-1234
    発行日: 1995/08/01
    公開日: 2009/11/16
    ジャーナル フリー
    Within-tree variations, whole-tree values and the representative heights for the whole tree value of basic density, and contents of wood components per volume were analysed for two trees of Eucalyptus camaldulensis and
    E
    . globulus
    respectively, grown at the seed orchard in Western Australia to do quality breeding.
    Within-tree variation of
    E
    . camaldulensis
    was rather uniform as 500±40, 532 ±34 kg/
    m3
    , but that of
    E
    . globulus
    was large as 595 ± 69, 616 ± 79 kg/
    m3
    and the basic density was higher in bark side and upper part in the trunk, to be expected to have higher pulp productivity.
    The whole-tree values of
    E
    . camaldulensis
    were 501, 520 kg/
    m3
    and those of
    E
    . globulus
    were 594, 640 kg/
    m3
    and the difference of the species was observed.
    Representative heights for the whole-tree contents ±5 % were
    0
    .32.
    8
    m on
    E
    . camaldulensis
    , and
    0
    .
    8
    and 2.
    8
    m on
    E
    . globulus
    regardless the differences in the whole-tree height and the within-tree variation when they were chosen below
    3
    .
    3
    m height for sampling an increment core.
    Representative heights were also determined for contents of wood components per volume as follows ; for
    E
    . camaldulensis
    , holocellulose : 1.
    3
    , 2.
    8
    m, cellulose : 2.
    83
    .
    3
    m, hemicellulose :
    0
    .
    82
    .
    8
    m, lignin :
    0
    .81.
    3
    , 2.
    8
    m, extractives : 2.
    3
    m, alkali-extractives : 1.
    3
    m, and total-extractives : 2.32.
    8
    m, for
    E
    . globulus
    , 2.
    8
    m, 2.32.
    8
    m, 2.
    8
    m,
    0
    .30.
    8
    m, 2.
    83
    .
    3
    m, 2.
    83
    .
    3
    m and 2.
    8
    m in the same manner.
    It is expected that whole-tree pulp properties including pulp productivity are predicted by the increment core taken from these representative heights.
  • 川又 紀彦, 渡部 良平
    臨床血液
    2019年 60 巻 7 号 767-772
    発行日: 2019年
    公開日: 2019/08/06
    ジャーナル 認証あり

    BCR-ABL1 International Scale(IS)測定はチロシンキナーゼ阻害剤で治療されている慢性骨髄性白血病(CML)患者の治療効果をモニターする上で重要な検査法である。稀ではあるが,BCR-ABL1 IS測定ができないCMLが存在することが知られている。本研究において,我々は,そのようなBCR-ABL1 IS測定のできないCML患者を経験し,分子生物学的な方法で,その原因を解明した。本例ではABL1遺伝子における切断点がa2エクソン内にあることが分かり,そのことがABL1のa2エクソンを欠いた

    e
    14a
    3
    b
    3
    a
    3
    )キメラ遺伝子のmRNAのみの発現を誘導していた。a2エクソンは本邦における検査部でのIS測定において重要な要素であり,これが欠損することが測定不能の原因であった。このようなIS測定ができない稀なCML症例をさらに集積して,その分子構造を解明することが待たれる。

  • M. L. GHOSH
    Journal of Physics of the Earth
    1972年 20 巻 2 号 165-186
    発行日: 1972年
    公開日: 2009/04/30
    ジャーナル フリー
    The possibility of attenuation of microseismic waves due to the presence of an upward folding of the ocean bottom into the liquid is discussed in this paper. The upward folding of the ocean bottom has been idealized by means of an irregularity in the form of a rectangle intruding into the liquid and the evaluation of the displacement component at any point of the solid medium has been carried out in two stages. First, the change in the incident mode of the surface wave due to the presence of the rectangular irregularity has been determined, and second, the subsequent change of the resulting displacement components due to the termination of the liquid layer and the step change in elevation of the solid medium at the continental margin has been discovered. Finally, numerical calculation has been made to determine the attenuation of the microseismic waves of different periods due to the presence of the rectangular irregularity at the ocean bottom.
  • Zhenhua Dan, Yasunobu Yamada, Yan Zhang, Masahiko Nishijima, Nobuyoshi Hara, Hiroyuki Matsumoto, Akihiro Makino
    MATERIALS TRANSACTIONS
    2013年 54 巻 4 号 561-565
    発行日: 2013/04/01
    公開日: 2013/03/25
    [早期公開] 公開日: 2013/02/22
    ジャーナル フリー
    The nanocrystalline soft-magnetic
    Fe83.3Si3B10P3Cu0.7
    ribbon alloy with a width of 10 mm prepared through annealing amorphous
    Fe83.3Si3B10P3Cu0.7
    ribbon alloy at 698 K had a saturation magnetization flux density of 1.
    82
    T and a coercivity of 11.
    8
    A m−1. The nanohetero-amorphous microstructure consisted of α-Fe nanocrystals with an average size of
    22
    nm and amorphous neighbor phases. The results of polarization curves and electrochemical impedance spectra obtained in
    0
    .5 M Na2SO4 and
    0
    .5 M NaCl solutions demonstrated the positive shift of the corrosion potentials, the decrease in the passive current density, the increase in the breakdown potentials and the increase in the polarization resistance for the nanocrystalline
    Fe83.3Si3B10P3Cu0.7
    ribbon alloy, compared with its amorphous counterpart alloy. The corrosion performance was improved via annealing, which is thought to result from the enrichment of
    B2O3
    constituent in the surface oxide layer.
  • 山口 昭彦
    日本中東学会年報
    1994年 9 巻 37-65
    発行日: 1994/03/31
    公開日: 2018/03/30
    ジャーナル フリー
    L'entree en Iran des armees britannique et sovietique s'est produite en aout 1941. Elle ebranla du coup le regime de la dynastie pahlavi qui etait au pouvoir depuis 16 ans, et mena le pays vers l'instabilite politique et le chaos social. La defaite de l'arme gouvernementale, qui etait le pivot du regime de Reza Shah, reduisit considerablement le controle du gouvernement central dans le pays. Cette situation politico-sociale confuse permit le developpement de differents mouvements politiques en Iran. C'est ainsi que le 16 aout 1942 le parti clandestin Komeley Jiyanewey Kurdistan (J-K) est ne a Mehabad, une ville au nord-ouest de l' Iran. Des sa formation, ce parti a su etendre sa sphere d'activite et, en une courte periode de temps, a fini par mettre sous son influence la ville et ses alentours. A la fin de la Seconde Guerre mondiale, en ete 1945, le J-K etait devenu une organisation representant le mouvement nationaliste kurde en Iran. C'est a ce moment-la qu'un autre parti politique, le Hizbi Dimokratiki Kurdistan (HDK), fonde par Qazi Mihemed a Mehabad aussi, devait remplacer le J-K. Des le
    22
    janvier 1946, le HDK proclama l'instauration de la≪Republique de Kurdistan≫. Cependant, les troupes sovietiques qui avaient pris sous leur protection la Republique evacuerent les terres iraniennes, en mai 1946. Six mois plus tard, sous la pression militaire du gouvernement central iranien, la republique s'ecroula. Deux theories tentent d'expliquer le passage du J-K au HDK. William Eagleton Jr., par exemple, affirme dans The Kurdish Republic of 1946 que le HDK a ete cree sur le conseil des autorites sovietiques. L'ex-secretaire general du Parti Democratique du Kurdistan d'Iran, 'Ebd el-Rehman Qasimlu maintient par contre que Qazi Mihemed a etabli le nouveau parti de sa propre initiative, eu regard a la situation politique de cette epoque-la. Il considere que la passage du J-K au HDK comme etant l'evolution d'un parti nationaliste clandestin en un parti democratique. En analysant ces deux theories et en se basant sur les autobiographies des personages qui se sont engages dans cet evenement, cette etude tentera d'examiner le principe directeur et les activites du J-K et de mieux comprendre les raisons pour lesquelles le J-K devait etre remplace par le HDK. La conclusion generale portera sur les differents objectifs politiques du J-K et du HDK. Le J-K visait l'elevation du niveau culturel du peuple tout en luttant contre le tribalisme, qui etait, selon lui, le probleme majeur de≪la nation kurde≫, et cela en ecartant toute idee de revolte militaire. Le J-K a aussi exclu de son cadre les elites sociales telles que les leaders des tribus et dirigeants religieux de peur qu'ils n'excercent une influence sur les membres du parti. L'automne de 1944 fut le debut d'une nouvelle ere pour le mouvement kurde. Alors que l'espoir de l'autodetermination augmentait parmi le peuple a mesure que s'approchait la fin de la guerre, la necessite de la force militaire a commence a se faire sentir dans le J-K. C'est pour cela que s'est produite au sein du parti une tendance a compter sur l'aide militaire des sovietiques et a recourir au leadership de Qazi Mihemed, qui avait une certaine influence meme sur les leaders tribaux. Mais cette tendance etait essentiellement incompatible avec la ligne fondamentale du J-K et, graduellement, a prive ce parti de sa raison d'etre. Ainsi, le HDK se substitua au J-K en tant que≪parti democratique≫visant a rallier d'abord les elites sociales sous sa banniere, en s'appuyant sur l'autorite personnelle de Qazi Mihemed.
  • Akimi Oono, Takafumi Miyanaga, Takeshi Kubota
    e
    -Journal of Surface Science and Nanotechnology

    2012年 10 巻 651-654
    発行日: 2012/12/15
    公開日: 2012/12/15
    ジャーナル フリー
    We investigated the local structure changes of
    Fe83.3Si4B8P4Cu0.7
    nanocrystalline alloy prepared by arc melting with various annealing conditions by XAFS. It was found that individual structural changes occur around each element (Fe, Si, P, Cu) by several annealing steps. The as-spun sample shows amorphous like structure. The Fe and Si phase crystallize by annealing at first transition temperature (693 K). On the other hand the local structure around Cu and P atoms changed by two steps at 693 K and 823 K. In order to examine the structure more detail, the XANES comparison and the curve fitting method for EXAFS were performed. The Cu atoms were embedded in bcc Fe phase between the first and second transition temperatures and changes to fcc Cu phase over 823 K. It was suggested that α-Fe phase including the isolated Cu atoms can be easily crystallized and shows the high magnetic performance. [DOI: 10.1380/ejssnt.2012.651]
  • 梶川 竜三
    日本機械学会誌
    1960年 63 巻 495 号 644-
    発行日: 1960/04/05
    公開日: 2017/06/21
    解説誌・一般情報誌 フリー
  • 増大する資源
    E
    . F. Boswell
    紙パ技協誌
    1998年 52 巻 7 号 885-889
    発行日: 1998/07/01
    公開日: 2009/11/19
    ジャーナル フリー
    The world is in the midst of a huge fundamental shift in fibre supply, demand balances, and policy changes. Governments around the world are introducing policy changes which influence the supply demand balance as the politicians' thoughts are uttered. Government agencies and their bureaucrats are imposing changes on industry even before the legislation is passed by the government in question.
    This ad hoc change process will continue for a time to come until the countries in question show a tough-mindedness with regard to their land use policies. Policies affecting forest areas such as protection areas, Native land claims, the protection of biodiversity and a true goal of sustainable development ; which addresses the combined issues of cultural, environmental, social and economic matters.
    Eventually all of these difficult issues will reach essential closure. Then there will be great new opportunities for investment to meet the growing demand for forest products ; leading to a strengthening competitive position in the more traditional producing areas such as Canada.
  • 西日本皮膚科
    2021年 83 巻 3 号 Index3_1-Index3_2
    発行日: 2021/06/01
    公開日: 2021/07/22
    ジャーナル 認証あり
  • Yao Sun, Jianzhong Ye, Yuanbo Hou, Huale Chen, Jianming Cao, Tieli Zhou
    Japanese Journal of Infectious Diseases
    2017年 70 巻 5 号 485-489
    発行日: 2017年
    公開日: 2017/09/25
    [早期公開] 公開日: 2017/03/28
    ジャーナル フリー

    The aim of the present study was to evaluate the predation efficacy of Bdellovibrio bacteriovorus on multidrug-resistant (MDR) or extensive drug resistant (XDR) gram-negative pathogens and their corresponding biofilms. In this study, we examined the ability of

    B
    . bacteriovorus to prey on MDR and XDR gram-negative clinical bacteria, including Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter baumannii. Results showed that
    B
    . bacteriovorus
    was able to prey on all planktonic cultures, among which the most efficient predation was observed for drug-resistant
    E
    . coli
    , with a
    3
    .11 log10 reduction in viability. Furthermore,
    B
    . bacteriovorus
    demonstrated promising efficacy in preventing biofilm formation and dispersing the established biofilm. Reductions in biofilm formation of
    E
    . coli, K. pneumoniae, P. aeruginosa
    , and A. baumannii co-cultured with
    B
    . bacteriovorus
    were 65.2%, 37.1%, 44.
    7
    %, and 36.
    8
    %, respectively. Meanwhile, the established biofilms of
    E
    . coli, K. pneumoniae, P. aeruginosa
    , and A. baumannii were significantly reduced by
    83
    .4%, 81.
    8
    %,
    83
    .1%, and 79.9%, respectively. A visual analysis supported by scanning electron microscopy demonstrated the role of
    B
    . bacteriovorus
    in removing the established biofilms. This study highlights the potential use of
    B
    . bacteriovorus
    as a biological control agent with the capability to prey on MDR/XDR gram-negative pathogens and eradicate biofilms.

  • 高木 徹, 林 賢治, 板橋 豊
    日本水産学会誌
    1984年 50 巻 8 号 1413-1418
    発行日: 1984/08/25
    公開日: 2008/02/29
    ジャーナル フリー
    The acetone extracts from three samples of the hepatopancreas of the poisonous scallops obtained on the Okhotsk Coast of Hokkaido Island were fractionated into two parts, hexane soluble fraction (fraction H) and 85% aqueous ethanol soluble fraction (fraction
    E
    ) by partition to two layers. The majortoxic components in the mouse assay of “diarrheic shellfish toxin” by intra-peritoneal injection were found to be free unsaturated fatty acids showed the following toxicity in MU per g, 18:1 n-9 35, 18:2 n-6
    83
    , 18:
    3
    n-
    3
    167, 18:4 n-
    3
    83
    , 20:5 n-
    3
    167, and
    22
    :6 n-
    3
    83
    , respectively. Toxicity of the fraction Hin MUper g was much lower than that of the fraction
    E
    . However, the toxicity of the fraction H per 1 g of the hepatopancreas was about twice that of the fraction
    E
    , since the fraction Hwas much more abundant than the fraction
    E
    in the hepatopancreas. The method for the assay of the diarrhetic shellfish toxin must be reexamined by considering the toxic effect of the free unsaturated fatty acids.
  • 長浜 隆史
    昭和医学会雑誌
    1971年 31 巻 3 号 115-129
    発行日: 1971/03/28
    公開日: 2010/09/09
    ジャーナル フリー
    Studies were performed on the pulmonary scintigram in 57 cases of asthmatic children and acid-base balance in 33 cases. Also, the relationship between pulmonary regional blood flow taken by photoscintigram of six to eight focuses and clinical findings or acid-base balance were observed. The results were as follows.
    1. The irregular shadows in pulmonary area were recognizable in all cases with asthmatic crisis by scintigram and diminished or disappeared upon clinical improvement. However, about fifty percent of subjects remained to be positive in pulmonic irregular shadow without any physical findings ever few days after the occurence of attacks.
    2. The deteriolation of symptom referred to the degree of circulation disturbance in pulmonary area, i.
    e
    . eleven segments of flow disturbance in severe cases of asthmatic crisis, six to ten segments in moderate and below five in mind.
    3
    . PO2, PCO2, pH and
    B
    .
    E
    . in arterial blood of asthmatic children were indicated as follows.
    PCO2 (mmHg) =10-
    0.00134
    (Po2 (mmHg) -1248), r=-
    0
    .346
    PCO2 (mmHg) =-6.16×pH+
    83
    .73, r=-
    0
    .779
    PO2 (mmHg) =
    8
    .69×pH+6.53, r=
    0
    .409
    B
    .
    E
    . (mEq/L) =
    3
    .87×pH-31.11, r=
    0
    .881
    (r=correlation index)
    4. The decrease of arterial PO2 was seen according the deterioration of clinical findings, and PCO2 revealed to elevate as clinical deterioration enforced. Upon the break down of homeostatic mechanism, it was showed to be hypercapnic and hypoxemic. It was strongly suggested to require treatment when PO2 showed below 60 mmHg or PCO2 is above 40 mmHg in asthmatic children. pH of normol valve was seen in 65 % of subjects with asthmatic crisis and decreased in 23 %, while normal
    B
    .
    E
    . in 38 % and moderately decreased in 50 %.
    5. According to the degree of circulating defective area in pulmonary region, PO2 was decreased with following relation.
    PO2 (mmHg) =-1.27× (segment of defective area) +
    82
    .17, r=-
    0
    .648 No significant relation between PCO2,
    B
    .
    E
    ., pH and regional pulmonary defect.
    6. The defects in regional pulmonary flow were seen remarkably in upper on lower in severe crisis.
    7
    . The regional pulmonary circulation defects showed in moderate degree when initial onset of attack was over four years of age, and duration of disease continued more than six years.
  • ―St. Jude Medical valveの抗血栓性について―
    藤田 康雄, 林 純一, 山崎 芳彦, 江口 昭治, 大谷 信一
    人工臓器
    1988年 17 巻 3 号 1133-1136
    発行日: 1988/06/15
    公開日: 2011/10/07
    ジャーナル フリー
    SJM弁の抗血栓性についてS-
    E
    ボール弁との比較検討を行った。S-
    E
    ボール弁で単弁置換をうけた132例と、SJM弁で単弁置換をうけた135例を対象とした。僧帽弁置換群の血栓塞栓症の発生頻度は、S-
    E
    非被覆弁2.14%/患者・年、S-
    E
    被覆弁1.
    82
    %/患者・年、SJM弁1.69%/患者・年であった。術後
    7
    年のThrombo-embolism Free RateはS-
    E
    非被覆弁で60.5±
    7
    .5%、S-
    E
    被覆弁で
    83
    .9±5.2%、SJM弁で92.4±
    3
    .1%であった。大動脈弁置換群の血栓塞栓症の発生頻度は、S-
    E
    非被覆弁1.36%/患者・年、S-
    E
    被覆弁、SJM弁では
    0
    であった。術後
    7
    年のThromboembolism Free RateはS-
    E
    非被覆弁75.6±10.6%、S-
    E
    被覆弁80.
    0
    ±10.
    3
    %、SJM弁96.
    7
    ±
    3
    .
    3
    %であった。SJM弁の抗血栓性はS-
    E
    非被覆弁に比し良好であったが、S-
    E
    被覆弁に比べ著しく向上したとはいえず、近年における血栓塞栓症の減少には厳重な抗凝固療法の施行も寄与していると考えられる。
  • ―特にアポ蛋白Eの変化について―
    本間 康彦, 三神 美和, 佐藤 美智子, 石原 仁一, 吉川 広, 木下 栄治, 田川 隆介, 星合 充基, 古屋 秀夫, 井出 満, 田辺 晃久, 玉地 寛光, 兼本 成斌, 友田 春夫, 中谷 矩章, 五島 雄一郎
    動脈硬化
    1984年 12 巻 3 号 599-603
    発行日: 1984/08/01
    公開日: 2011/09/21
    ジャーナル フリー
    Seven hundred fifty mg of cholesterol were fed daily to 32 patients of the ischemic heart disease (IHD) for 2 weeks. Cholesterol amounts in VLDL, LDL, HDL, HDL2 and
    HDL3
    were estimated on the
    0
    th,
    7
    th and 14th days of cholesterol load. Plasma apoprotein A-I, A-II,
    B
    , C-II,
    E
    levels were also measured in 16 from 32 IHD subjects. Apoprotein levels were estimated by a method of single radial immunodiffusion (SRID). Before cholesterol administration, cholesterol amounts in VLDL, LDL, HDL, HDL2 and
    HDL3
    were 15.9±
    7
    .5mg/dl (mean±SD), 150.9±58.1mg/dl 43.
    8
    ±9.6mg/dl, 16.4±5.
    8
    mg/dl and 24.9±6.
    3
    mg/dl respectively. Plasma apoprotein A-I, A-II,
    B
    , C-II and
    E
    levels were 81.
    7
    ±
    22
    .
    0
    mg/dl, 15.1±5.4mg/dl, 93.
    7
    ±36.
    0
    mg/dl,
    3
    .
    83
    ±1.00mg/dl and 4.29±1.36mg/dl respectively. After 2 weeks' cholesterol feeding, all plasma lipoprotein cholesterol and apoprotein levels did not change significantly. Correlation coefficients between plasma apoprotein and lipoprotein cholesterol levels were calculated. Apoprotein A-I and A-II correlated with HDL-C (r=
    0
    .348), HDL2-C (r=
    0
    .612) and
    HDL3
    (r=
    0
    .569). Apoprotein
    B
    correlated with total cholesterol (TC) (r=
    0
    .610), VLDL-C (r=
    0
    .341), LDL-C (r=
    0
    .726), HDL-C (r=
    0
    .432) and HDL2-C (r=
    0
    .465). Apoprotein C-II correlated with TC (r=
    0
    .765), TG (r=
    0
    .679), VLDL-C (r=
    0
    .651), LDL-C (r=
    0
    .461) and HDL2-C (r=
    0
    .326). Apoprotein
    E
    correlated with TC (r=
    0
    .580), TG (r=
    0
    .575) and VLDL-C (r=
    0
    .666). Interapoprotein's correlations were also calculated. Apoprotein A-I correlated with apoprotein A-II (r=
    0
    .468). Apoprotein
    B
    correlated with apoprotein C-II (r=
    0
    .393). Apoprotein C-II correlated with apoprotein
    B
    (r=
    0
    .393) and
    E
    (r=
    0
    .549). Apoprotein
    E
    only correlated with apoprotein C-II (r=
    0
    .549).
  • Yosizo YAMAMOTO
    Nippon Sugaku-Buturigakkwai Kizi Dai
    3
    Ki

    1940年 22 巻 12 号 1048-1052
    発行日: 1940年
    公開日: 2009/06/09
    ジャーナル フリー
    The numerical values of the intervals betrween optieal levels are competed for the configurations
    1s22s22p83s23p83
    *94s, 5s, 6s and
    7
    s of Cu+, according to the general expression of energy-levels derived in the previous paper The self-consistent field radial functions computed by Hartree adn Hartree are used for1s, 2s, 2p,
    3
    s,
    3
    p and
    3
    d. Those of 4s, 5s,
    e
    .s and are ealenlated from Hartree Hartree's core-functions by the numerical integrations. The calculated results are shown in Table I.The agreement with experiment is satisfactory
  • JAN FAJKOS, Jiri Joska, Frantisek Sorm
    International Symposium on the Chemistry of Natural Products
    1964年 1964 巻 E-10-3
    発行日: 1964/04/12
    公開日: 2017/08/18
    会議録・要旨集 フリー
  • George W. Lee
    燃料協会誌
    1973年 52 巻 3 号 171-177
    発行日: 1973/03/20
    公開日: 2010/06/28
    ジャーナル フリー
  • Daria Kurguzova, Svetlana Serebrova, Alexey Prokofiev, Ludmila Krasnykh, Galina Vasilenko, Marina Zhuravleva, Elena Smolyarchuk, Anton Barkov
    日本薬理学会年会要旨集
    2018年 WCP2018 巻 WCP2018_PO3-5-27
    発行日: 2018年
    公開日: 2020/09/10
    会議録・要旨集 オープンアクセス

    Background

    The differences in conditions of enteric-coated acid-labile drug release and absorption between healthy subjects in bioequivalence studies and gastrointestinal patients in clinical practice can lead to significant differences in gastric stability of original PPIs and generics. Thus, pathologic duodenogastric reflux (PDGR) and the pH increasing within PPIs administration still remain unaccounted for.

    Methods

    Two-stage modified comparative dissolution testing of original omeprazole (OO) and four generics (G1;2;

    3
    ;4) was performed. At first, we moved drugs from solution with pH 1.2 (1.2±
    0
    .05) to pH
    7
    .
    0
    (
    7
    .
    0
    ±
    0
    .05) and measure concentration of omeprazole in solution by high-performance liquid chromatography. According to our self-developed formula, pH
    7
    exposure time of resistance to PDGR for omeprazole is 4 minutes, i.
    e
    . the active substance should not be released within 4 minutes at pH
    7
    . The exposure at the second stage was conducted with pH 4 (4.
    0
    ±
    0
    .05), that imitated gastric pH after PPI administration. And then we also moved drugs to pH
    7
    with the subsequent measurement of omeprazole concentration.

    Results

    Omeprazole concentrations after 4, 10, 15, 20, 30, 45, 60 minutes in pH

    7
    solution at the first stage were different for OO and generics. For OO, these values were 4,
    7
    ±
    0
    ,
    7
    %; 41,4±
    3
    ,
    0
    %; 62,
    8
    ±4,
    0
    %; 79,5±2,9%;
    83
    ,5±2,9%; 81,6±2,9%; 80,6±4,4%; for Generic1 -
    0
    ; 49,
    3
    ±9,9%; 88,
    8
    ±2,
    8
    %; 90,4±
    3
    ,
    7
    %; 88, 2±2,2%; 87,
    3
    ±2,
    0
    %; 85,9±1,1%; for Generic2 -
    0
    ; 30,6±6,
    3
    %; 66,
    7
    ±
    8
    ,2%; 76,4±
    7
    ,4%;
    82
    ,
    8
    ±5,
    3
    %; 86,
    0
    ±
    3
    ,
    7
    %; 84,6±
    3
    ,
    3
    %: for Generic
    3
    - 80,
    8
    ±
    3
    ,6%;
    83
    ,5±1,9%;
    83
    ,
    8
    ±
    3
    ,2%;
    83
    ,
    3
    ±2,
    7
    %; 81,9±2,1%;
    82
    ,1±2,
    0
    %;
    82
    ,
    0
    ±2,4%; for Generic4 -
    82
    ,5±1,
    7
    %; 84,4±
    0
    ,
    8
    %; 84,2±1,2%;
    82
    , 9±
    0
    ,9%;
    82
    ,9±
    0
    ,9%;
    82
    ,9±
    0
    ,9%;
    82
    ,
    8
    ±1,1%, respectively.

    An analysis of the omeprazole concentration in pH

    7
    solution at the second stage revealed the following parameters after the same time: for OO - 4,4±
    0
    ,6%; 40, 5±
    3
    ,
    0
    %; 62,
    8
    ±2,
    0
    %; 80,
    0
    ±
    3
    ,1%; 85,4±2,9%;
    82
    ,
    8
    ±
    3
    ,4%; 80,9±
    3
    ,5%; for Generic1 -
    0
    ; 67,
    0
    ±
    7
    ,
    8
    %; 89,
    7
    ±2,
    3
    %; 91, 9±4,
    3
    %; 89,1±1,6%; 88,
    3
    ±1,4%; 87,
    8
    ±1,2%; for Generic2 -
    0
    ; 42,2±5,6%; 75,1±
    7
    ,
    3
    %; 81,
    0
    ±6,
    0
    %; 88,4±
    3
    ,2%; 88, 6±1,
    3
    %; 87,9±1,
    0
    %; for Generic4 - 85,5±
    0
    ,5%; 85,6±
    0
    ,5%; 84,
    7
    ±
    0
    ,9%;
    82
    ,
    7
    ±
    3
    ,
    0
    %; 84,4±
    0
    ,
    3
    %; 84,4±
    0
    ,
    3
    %; 84,
    3
    ±
    0
    ,4%, respectively. Generic
    3
    release and degradation were completely realized at pH 4.

    Conclusion

    Decreased gastric stability of Generic

    3
    and Generic4 makes PDGR and inhibited gastric acid secretion due to PPIs administration the potential causes of decreased enteric-coated acid-labile drugs stability.

  • C. M. Hall, T. Aso
    Earth, Planets and Space
    2000年 52 巻 9 号 639-643
    発行日: 2000年
    公開日: 2010/03/09
    ジャーナル フリー
    The EISCAT Svalbard Radar (ESR) has been used to obtain ion velocities in the lower thermosphere. By using beam swinging and assuming homogeneity and stationarity of the plasma, first approximations to the electric field have been deduced, and thus the thermospheric neutral wind has been estimated. From these derived parameters, we have estimated the gradient Richardson Number. Although many assumptions must be made, there is an indication that electrodynamics is able to contribute to enhancement or even production of neutral-air turbulence in the lower thermosphere. Finally, we outline a proposal for an analogy to the Reynolds Number, but reflecting the relative importance's of the contribution of ion-drag to the neutral dynamics and the kinematic viscosity.
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