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  • Yasunori SAITO, Tomoyuki MARUYAMA, Hideaki YAMAKI, Fumitoshi KOBAYASHI, Takuya
    D
    . KAWAHARA, Akio NOMURA, Mitsuyoshi TANAKA
    Optical Review
    1999年 6 巻 5 号 459-463
    発行日: 1999/10/01
    公開日: 2000/03/28
    ジャーナル フリー
    Static characteristics of two different structured InAlGaAs/InAlAs superlattice avalanche photodiodes (SLAPDs) cooled by liquid nitrogen were evaluated at a wavelength of 1.
    5
    μm. The dark current of the SLAPD having a thick superlattice layer of 0.504 μm was
    5
    ×10-13 A. This was successively reduced by four orders of magnitude compared to that of the thin layer SLAPD of 0.231 μm at a breakdown voltage of around 20 V. The thickened layer was effective in suppressing tunneling dark current. An output current of 1.7×10-12 A at a bias voltage of 15 V was measured for an optical input with a wavelength of 1.
    5
    μm and a signal power of 1×10-12 W. This showed a sharp distinction from the dark current.
  • Suguru TAKATSUTO, Kiyomi KOBAYASHI, Tsuyoshi WATANABE, Hiroki KURIYAMA, Tokuo FURUSE
    Agricultural and Biological Chemistry
    1988年 52 巻 12 号 3217-3218
    発行日: 1988年
    公開日: 2006/04/05
    ジャーナル フリー
  • 榎 明潔, 八木 則男, 矢田部 龍一, 一本 英三郎
    土質工学会論文報告集
    1991年 31 巻 2 号 1-13
    発行日: 1991/06/15
    公開日: 2008/02/29
    ジャーナル フリー
    It has been shown after mathematical and mechanical investigation that Limit Equilibrium Method (LEM) can be considered as a method to obtain the necessary condition of Slip Line Method (SLM), and that the solution can be obtained under the condition that Fs=1 and ∂Fs/∂θ=O, where Fs is the safety factor and θ is the inclination of the plane on which the safety factor is defined. Next, the generalized LEM (GLEM) is proposed, dealing with the following points : (1) Triangular or quadrangular blocks can be treated; (2) Safety factors are defined also on interblock planes; and (
    3
    ) All types of plastic problems, slope stability, bearing capacity, and earth pressure are identically formulated. Two situations regarding treatment of the moment equilibrium condition are discussed. GLEM is applied to well-known problems. The results agree well with those obtained by theoretical methods. GLEM can be used to obtain the distribution of earth pressure or bearing capacity. GLEM, Iike ordinary LEM, is very effective for the practical problems, but GLEM is more theoretical and it can result in more accurate solutions.
  • R.G. WAN, P.J. GUO
    地盤工学会論文報告集
    1999年 39 巻 6 号 1-11
    発行日: 1999/12/15
    公開日: 2008/02/29
    ジャーナル フリー
    This paper outlines a mathematical description of the stress dilatancy behaviour of granular materials which accounts for stress level and void ratio dependencies. The consideration of these aspects has important implications in the modelling of granular material behaviour. In fact, granular material mechanical response is largely dominated by the evolution of dilatancy, fabric and void ratio histories. The starting point in this study is the well established Rowe's theory which is revisited and ultimately modified by introducing a factor linked to governing state parameters in order to describe the complete behaviour of granular materials during deformation. Numerical simulations of triaxial tests on granular materials at different void ratios and stress levels are herein presented to illustrate the model.
  • 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.

  • 末次 康将
    マリンエンジニアリング
    2021年 56 巻 5 号 680-687
    発行日: 2021/09/01
    公開日: 2021/10/12
    ジャーナル フリー
  • Keishi Hata, Fuyuki Sugawara, Naganori Ohisa, Saori Takahashi, Kazuyuki Hori
    Biological and Pharmaceutical Bulletin
    2002年 25 巻 8 号 1040-1044
    発行日: 2002年
    公開日: 2002/08/01
    ジャーナル フリー
    We screened the differentiation-inducing activities of 39 mushroom extracts from Akita prefecture, Japan, on the mouse osteoblastic cell line, MC
    3
    T
    3
    -
    E
    1. Sixteen phosphate buffered saline (PBS),
    8
    boiled PBS, 14 ethanol and 12 methanol extracts induced alkaline phosphatase (ALP) activities, an indicator of MC
    3
    T
    3
    -
    E
    1 cell differentiation. The enzyme activities were markedly induced by extracts of Tricholoma auratum, and we isolated the active compound from methanol extracts of this mushroom. Physical data for the isolated active compound were identical to those for (
    22E
    ,24R)-ergosta-7,
    22
    -diene-
    ,
    ,
    -triol (1). 1 induced ALP activities of MC
    3
    T
    3
    -
    E
    1 cells and promoted cell proliferation. To investigate the relationships between the chemical structure and differentiation-inducing activity of the compound, ALP-inducing activities of MC
    3
    T
    3
    -
    E
    1 cells by 1, ergosterol (2), ergocalciferol (
    3
    ), cholesta-
    ,
    ,
    -triol (4), 7-dehydrocholesterol (
    5
    ) and cholecalciferol (
    6
    ) were tested. The enzyme activities of MC
    3
    T
    3
    -
    E
    1 cells were increased
    3
    .0-fold by 10 μM 1 and 2.4-fold by 10 μM 4. However, 2,
    3
    ,
    5
    and
    6
    did not induce MC
    3
    T
    3
    -
    E
    1 cell ALP activity at 0.1—10 μM. These results suggested that the OH groups at C-
    5
    and/or C-
    6
    of 1 and 4 played an important role in their differentiation-inducing activities on MC
    3
    T
    3
    -
    E
    1 cells. Furthermore, 1 suppressed induction of MC
    3
    T
    3
    -
    E
    1 cell apoptosis by serum starvation.
  • Takefumi Hattori, Hiromitsu Tsuzuki, Hiroe Amou, Kumio Yokoigawa, Masanori Abe, Akira Ohta
    Mycoscience
    2016年 57 巻 3 号 181-186
    発行日: 2016年
    公開日: 2023/03/07
    ジャーナル オープンアクセス

    A biosynthetic pathway for (

    E
    )-methyl cinnamate formation was evaluated in Tricholoma matsutake by tracer experiments using 13C- and 2H-labeled precursors. One hundred percent selective 13C incorporation was observed when L-[1,2,
    3
    ,4,
    5
    ,
    6
    ,7,
    8
    ,
    9
    -
    13C9
    , 15/N]phenylalanine was converted to (
    E
    )-[1,2,
    3
    ,4,
    5
    ,
    6
    ,7,
    8
    ,
    9
    -
    13C9
    ]cinnamate and (
    E
    )-[1,2,
    3
    ,4,
    5
    ,
    6
    ,7,
    8
    ,
    9
    -
    13C9
    ]methyl cinnamate. Similarly, 100% selective 13C incorporation was observed when (
    E
    )-[1,2,
    3
    ,4,
    5
    ,
    6
    ,7,
    8
    ,
    9
    -
    13C9
    ]cinnamate was converted to (
    E
    )-[1,2,
    3
    ,4,
    5
    ,
    6
    ,7,
    8
    ,
    9
    -
    13C9
    ]methyl cinnamate. In contrast, the 2H incorporation selectivities were
    82
    .1% and
    81
    .4% when L-[2,
    3
    ,4,
    5
    ,
    6
    ,7,7,
    8
    -
    2H8
    ]phenylalanine was converted to (
    E
    )-[2,
    3
    ,4,
    5
    ,
    6
    ,7,
    8
    -2H7]cinnamate and (
    E
    )-[2,
    3
    ,4,
    5
    ,
    6
    ,7,
    8
    -2H7]methyl cinnamate, respectively. Thus, T. matsutake synthesizes (
    E
    )-methyl cinnamate from L-phenylalanine via (
    E
    )-cinnamate. (
    E
    )-cinnamate was likely formed through two pathways: one was major and the other was a minor.

  • Tsuyoshi WATANABE, Hiroki KURIYAMA, Tokuo FURUSE, Kiyomi KOBAYASHI, Suguru TAKATSUTO
    Agricultural and Biological Chemistry
    1988年 52 巻 8 号 2117-2118
    発行日: 1988年
    公開日: 2006/04/05
    ジャーナル フリー
  • ASHRAF GHALY, ADEL HANNA, MIKHAIL HANNA
    土質工学会論文報告集
    1991年 31 巻 2 号 77-92
    発行日: 1991/06/15
    公開日: 2008/02/29
    ジャーナル フリー
    The performance of single pitch and multi pitch screw anchors during the application of installation torque is presented. An experimental testing program was conducted using five models of screw anchors with different geometry. The effect of the shape of the screw element, sand properties, and installation depth on the required installation torque value was examined. A theoretical model was developed from which the required installation torque value can be calculated in terms of the influencing factors. The required installation torque can be determined in terms of the ultimate uplift resistance calculated from any of the available theories. Based on the actual installation torque value measured in the field, the anticipated pullout capacity can be back calculated from the present theory. A comparison between theoretical and experimental results showed good agreement. Also, good agreement was observed when the present theoretical results were compared with the available field results reported in the literature.
  • R. I.・Ittrich-Fluorometry
    田中 啓幹
    日本泌尿器科學會雑誌
    1969年 60 巻 12 号 1125-1142
    発行日: 1969年
    公開日: 2010/07/23
    ジャーナル フリー
    Urinary estrogens have been assayed chiefly with the Kober hydroquinone colorimetry or sulfuric acid fluorimetry. However, it is difficult to determine accurately small amounts of estrogens such as in urines from males, oophorectomized women or menopausal women. In this study, male urinary estrogens were determined by a modification of the method reported by Kambegawa and some experimental studies were made on male urines. 200ml aliquot of 24-hour urine is hydrolyzed by the
    3
    -step hydrolysis, added with estrone-
    6
    , 73H, 17β-estradiol-
    6
    , 73H and estriol-
    6
    , 73H, and extracted with ether, followed by alkaline washes, methylation by a supersonic wave mixer, thin layer and column chromatography, liquid scintillation spectrometry and the Ittrich fluorometry. Results of experimental studies and estimation of urinary estrogens in males are as follows: 1) After the
    3
    -step hydrolysis, 54.
    5
    % of the urinary estrogens were collected as the glucuronide, 30% in the solvolyzed fraction and 15.
    5
    % as the hot acid hydrolyzate. 2) The methylation of estrogens was achieved 10-20% better by the use of the supersonic wave mixer than by a magnetic stirrer.
    3
    ) Calculating efficiency of the Packard Tri-carb liquid scintillation spectrometer was tested in varieties of the estrogen concentrations using the dilution and the external standardization methods. There was noted no influence of the estrogen concentrations on the counting efficiency in the determination ranges. 4) In the range of 2×10-
    3
    -1.0μg, a linear relationship on the standard curve was obtained applying the Allen's correction, when fluorometry was conditioned with the excitation light wave length of 510mμ and the fluorescence wave lengths of 530, 550 and 570mμ for each of the three estrogen-methyl ethers.
    5
    ) Urinary estrogens were determined in 15 normal males. In
    5
    subjects (2-13 years old) the values were:
    E1
    : 1.06±1.09;
    E2
    : 0.64±0.54;
    E3
    : 0.76±0.68 and the total
    E
    : 2.46±1.99μg/24hr. In
    5
    men (
    22
    -38 years old),
    E1
    :
    5
    .02±1.57;
    E2
    : 2.58±0.21;
    E3
    : 4.11±1.
    82
    and the total
    E
    : 11.72±
    2.97μg
    /24hr. In
    5
    men (46-72 years old),
    E1
    :
    3
    .
    81
    ±0.31;
    E1
    : 1.71±0.48;
    E3
    :
    3
    .51±0.94 and the total
    E
    :
    9
    .03±1.33μg/24hr.
    6
    ) Urinary estrogens were also determined in patients with a variety of clinical syndromes.
  • S.NARASIMHA RAO, Y.V.S.N. PRASAD
    土質工学会論文報告集
    1992年 32 巻 4 号 164-170
    発行日: 1992/12/15
    公開日: 2008/02/29
    ジャーナル フリー
    Plate anchors are the popular type of anchors used in civil engineering construction both on land and offshore. In this paper, the uplift capacity of plate anchor in a sloped clayey ground has been brought out with the help of an experimental programme, carried out on a 50mm diameter model plate anchor. The tests have been conducted at slopes of O°, 15°, 30°and 45°. From the test results, it is found that in the case of shallow anchor, as the slope is increasing from O°to 45°, there seems to be a reduction in uplift capacity. Simple expressions are suggested to arrive at the uplift capacities in sloped ground. The mechanisms involved in the reduction of capacity with slope are explained based on the observed behaviour.
  • BRAJA M. DAS, VIJAY K. PURI
    土質工学会論文報告集
    1989年 29 巻 3 号 138-144
    発行日: 1989/09/15
    公開日: 2008/02/29
    ジャーナル フリー
    Laboratory model test results for the holding capacity of inclined shallow square plate anchors in clay (φ=0 concept) have been presented. The inclination of the anchor with respect to the horizontal was varied from zero to 90°. Based on the model study, an empirical relationship for estimating the ultimate holding capacity of the anchors has been presented.
  • *Pradeep Kumar SHRESTHA, Fumihiko NAKAMURA, Toshiyuki OKAMURA
    Proceedings of the Eastern Asia Society for Transportation Studies
    2009年 2009 巻
    発行日: 2009年
    公開日: 2010/08/25
    会議録・要旨集 フリー
    In this paper, bus signal priority (BSP) with different near side bus stop position in reference to the average queue during red time of the selected intersection and bus detection after bus departure from stop was modeled. Three alternative positions such as bus stop within normal queue, at the end of normal queue and beyond the distance of normal queue were evaluated for traffic flow ratios of 0.7, 0.
    9
    and 1.1 by simulation method. Two objective functions i.
    e
    . decrease in delay for priority movement and increase in delay for non-priority movements were considered. Since there are two objective functions, Pareto-optimal situation arises. The optimal case was selected based on the shortest normalized distance to Pareto optimal sets. Bus stop at the end of normal queue outperforms reducing total person delay in priority direction with least increase in total person delay on non-priority direction.
  • W. TANG, G. MESRI, I. HALIM
    土質工学会論文報告集
    1992年 32 巻 4 号 107-116
    発行日: 1992/12/15
    公開日: 2008/02/29
    ジャーナル フリー
    A method for analyzing the uncertainties involving the use of empirical relationships in design is developed. It is applied to evaluate the reliability of the relationship su(mobilized)=
    0.22σ'p
    (measured), whereby the pertinent uncertainties are analyzed using extensive laboratory and field observed data. On the average, the relationship su(mobilized)=
    0.22σ'p
    (measured) is unbiased and the error implicit in the relationship is about 15%. When cone values are used to infer s'p, additional uncertainties on the mobilized undrained strength will incur resulting mainly from the calibration uncertainty between σ'p and the cone values. Alternatively, vane tests may be performed to infer the mobilized strength using Bjerrum correction factor. Results show that uncertainty level associated with using the vane tests is smaller than that using the cone values, provided that similar scatter is observed between measured vane and cone values at a given site. However, prediction of the mobilized strength is even more accurate if direct measurements can be made on the preconsolidation pressure. The proposed probabilistic method also assesses the benefit of additional tests besides comparing the accuracy of using various soil parameters for predicting mobilized undrained strength. Such information is essential for planning cost-effective site characterization program.
  • M. M. FARIAS, M. PINHEIRO, M. P. CORDAO NETO
    SOILS AND FOUNDATIONS
    2006年 46 巻 5 号 613-628
    発行日: 2006年
    公開日: 2011/01/27
    ジャーナル フリー
    Engineering problems concerned either directly or indirectly with unsaturated soils are more and more common, ranging from aspects related to seepage to those related to shear strength and volume change. A few constitutive models have been conceived to describe and quantify these problems all of them with some advantages and drawbacks. Regarding mechanical behavior, the so-called Barcelona Basic Model (BBM) has achieved wide acceptance in geotechnical engineering, basically due to its simple mathematical formulation and good description of phenomena associated with unsaturated soils, especially collapse. Another concept that has emerged as a powerful framework to tackle three-dimensional states in granular materials is that of a modified stress tensor, such as tij. In this paper both BBM isotropic structure and tij concepts are combined to propose a new elastoplastic model for unsaturated soils, called tij-unsat. Modifications and generalizations for unsaturated states are introduced to accommodate those frameworks and overcome some inherited drawbacks. At the end of this work, experimental data gathered from specialized geotechnical literature is used to support the theoretical framework. The satisfactory agreement between simulations and tests results emphasizes the applicability of the proposed formulation to real boundary value geotechnical problems.
  • Philippe Biane
    Publications of the Research Institute for Mathematical Sciences
    1995年 31 巻 1 号 63-79
    発行日: 1995年
    公開日: 2009/04/24
    ジャーナル フリー
  • 等電点ゲル電気泳動法を用いたアポ蛋白Eの Isoform の検討
    上田 幸生, 吉村 陽, 若杉 隆伸, 渡辺 彰, 多々見 良三, 上田 良成, 亀谷 富夫, 羽場 利博, 小泉 順二, 宮元 進, 馬淵 宏, 竹田 亮祐
    動脈硬化
    1981年 8 巻 4 号 745-751
    発行日: 1981/01/01
    公開日: 2011/09/21
    ジャーナル フリー
    According to Utermann et al, Apo
    E
    is usually separated into three major isoforms, ie
    E
    1,
    E
    2,
    E
    3
    , and he reported three phenotypes of Apo
    E
    , Apo
    E
    -N, Apo
    E
    -ND, Apo
    E
    -
    D
    , according to the Apo
    E
    2/
    E
    3
    ratios.
    In this study we examined Apo
    E
    polymorphism by isoelectric focusing and ultracentrifugal lipoprotein analysis in 124 Japanese subjects including
    5
    patients with primary type III hyperlipoproteinemia.
    Following results were obtained.
    1) The Apo
    E
    protein focused into four main bands, Apo
    E
    1′,
    E
    1,
    E
    2,
    E
    3
    (normal pattern) and fifth band (Apo
    E
    4), (variant pattern).
    2) In primary type III hyperlipoproteinemia, Apo
    E
    3
    was deficient, wherease Apo
    E
    2 and Apo
    E
    1 increased.
    3
    ) We examined distribution of Apo
    E
    patterns according to Apo
    E
    3
    /
    E
    2 ratios in 124 subjects. The distribution of the Apo
    E
    3
    /
    E
    2 ratios showed a trimodality. All the patients with primary type III hyperlipoproteinemia were in the lowest mode (
    E
    3
    /
    E
    2 below 0.
    3
    ) which represents Apo
    E
    -
    D
    . In the remainders, 34 subjects were in the middle mode (
    E
    3
    /
    E
    2, between 0.
    6
    -1.4) which represents Apo
    E
    -ND. and 85 subjects were in the highest mode (
    E
    3
    /
    E
    2 above 1.
    5
    ) which represents Apo
    E
    -N.
    These cutoff points correspond to those which Utermann had reported in the German populations. Thus, there were no differences in Apo
    E
    phenotypes between Japanese and German populations.
    4) In
    3
    patients out of
    5
    patients with primary type III hyperlipoproteinemia, we measured postheparin lipolytic activity. Two cases (H. N., M. K.) showed a decreased hepatic lipase activity (H-TGL) and a normal lipoprotein lipase activity (LPL).
    But one case (S. I.) showed a normal H-TGL and LPL.
    5
    ) VLDL-TC/VLDL-TG and VLDL-TC/whole serum TG ratios were higher in Apo
    E
    -ND than in Apo
    E
    -N, and higher in Apo
    E
    -
    D
    than in Apo
    E
    -ND.
    These results suggests that Apo
    E
    3
    deficiency had a effect which increases lipoprotein remnants.
  • 西村 正巳
    日本機械学会誌
    1961年 64 巻 504 号 193-
    発行日: 1961/01/05
    公開日: 2017/06/21
    解説誌・一般情報誌 フリー
  • 袋 秀平, 近藤 靖児, 川田 暁, 佐藤 吉昭, 藤原 美定, 比留間 政太郎, 岡村 理栄子, 儘田 晃, 中山 坦子
    西日本皮膚科
    1987年 49 巻 5 号 801-807
    発行日: 1987/10/01
    公開日: 2012/03/10
    ジャーナル 認証あり
    E
    群色素性乾皮症(以下XP)の
    3
    例を報告した。XP80TO(50才), XP
    81
    TO(42才), XP
    82
    TO(41才)のいずれも女子で, XP80TOの両親が従兄妹である以外血族結婚はない。いずれも
    5
    9
    才ごろに日焼けしやすいことに気づいた。XP80TO,
    81
    TOはそれぞれ46才, 41才のときに顔面に皮膚腫瘍(basalioma)が発生し, 切除術を受けた。臨床的に露光部に粟粒大から大豆大までの色素斑, 脱色素斑を認めるが, 眼症状はみられない。一般臨床検査, 神経学的検査でも異常を認めない。光線テストで, 紫外線紅斑反応のピークはXP80TO,
    81
    TOでは48時間後, XP
    82
    TOでは24時間後で, 最小紅斑量(MED)は全例に中等度の低下を認めた。培養線維芽細胞の不定期DNA合成は正常の40∼44%で, また254nm紫外線に対する患者由来細胞の致死感受性はn=1.
    3
    ∼1.
    8
    ,
    D0
    =2.2∼2.
    8
    J/m2であり, これらの値は正常人とA群XP患者の中間に位置した。相補性テストで
    3
    例とも
    E
    群と決定した。現在までに報告された本邦の
    E
    群患者例には血族結婚および皮膚腫瘍の発生はみられないが, 自験例で示されたごとく, 本邦例でも家系内同症や皮膚腫瘍について留意すべきであると考えた。
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