著者

用量設定法ガイドライン検討委員会 藤堂 浩明 足立 浩章 今井 教安 上中 麻規子 内田 崇志 大谷 道輝 澤田 美月 成田 昌稔 西島 貴史 野村 宜史 宮坂 美行 畑尾 正人 増永 卓司 山口 雅彦 佐々 齊 知久 真巳 川田 裕三 古屋 律子 藤井 まき子

出版者

日本香粧品学会

雑誌

日本香粧品学会誌 (ISSN:18802532)

巻号頁・発行日

vol.43, no.2, pp.99-108, 2019-06-30 (Released:2020-06-30)

参考文献数

15

被引用文献数

1

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The skin concentration of topically applied cosmetic active ingredients is very important for evaluating cosmetics. However, a large variation is often observed in finite dose experiments due to the evaporation of volatile components in the formulation and difficulties for applying formulation uniformly. In addition, steady-state skin concentration could not be attained even after several hours of application. In this verification report, we conducted in vitro skin permeation experiment with an infinite dose to confirm whether formulation with the highest skin permeation would also show the highest skin concentration. Three formulations, lotion, milk, and cream, and the mixture of these formulations containing isopropyl methyl phenol (IPMP) as a model ingredient were applied to excised human skin in eight research facilities. The present experiment was conducted with receptor solution containing 1.0% of Brij 98 in order to increase solubility of IPMP in the receptor fluid without changing skin integrity. The obtained results were consistent among the facilities in the following order of skin permeation (lotion>milk>cream≅the mixture) and corresponded with that of the skin concentration. This result showed that evaluation of topical formulations with in vitro skin permeation experiment with an infinite dose could identify the formulation which exhibited the highest steady-state skin concentration of cosmetic active ingredients. In addition, experiment with mixture formulation might reveal changes in skin permeability associated with changes in thermodynamic activity of IPMP after co-application of several formulations on the skin.

著者

大谷 道輝 山田 伸夫 高山 和郎 小瀧 一 江藤 隆史 假家 悟 内野 克喜 伊賀 立二

出版者

公益社団法人 日本薬学会

雑誌

YAKUGAKU ZASSHI (ISSN:00316903)

巻号頁・発行日

vol.122, no.1, pp.107-112, 2002-01-01 (Released:2003-02-13)

参考文献数

14

被引用文献数

8 8

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A commonly used admixture of commercially available ointments and/or creams was selected from the prescribed sheets in our hospital, and questionnaire to dermatologists. To assess the relationship between permeability of corticosteroid through murine skin and clinical effects in human, we attempted to investigate the vasoconstrictor activity of these admixtures of topical corticosteroid by double-blind controlled study. Test samples were occluded at random on the back of 20 healthy volunteers for 4 hours. The vasoconstrictor activity of corticosteroid creams (Lidomex®) alone was significantly large as compared with that of ointments alone. The vasoconstrictor activity of corticosteroid in the admixture of Lidomex® ointment and urea ointments or heparinoid ointment was 1.5—2 fold significantly larger than that from ointments alone. The extent of the stability of the emulsion after mixing was related to the vasoconstrictor activity. These experiments demonstrated a close relationship between the vasoconstrictor activity of human skin and permeability of hairless mice skin. These results suggested that the vasoconstrictor activity of topical corticosteroids mixed with commercially available ointments and/or creams depends upon their physicochemical characteristics.

著者

北河 修治 大谷 道輝

出版者

一般社団法人 日本医療薬学会

雑誌

日本医療薬学会年会講演要旨集 第26回日本医療薬学会年会 (ISSN:24242470)

巻号頁・発行日

pp.18-13-S37, 2016-09-17 (Released:2019-01-18)

著者

松元 美香 大谷 道輝 馬島 裕子 並木 路広 假家 悟 内野 克喜

出版者

一般社団法人日本医療薬学会

雑誌

医療薬学 (ISSN:1346342X)

巻号頁・発行日

vol.28, no.5, pp.450-455, 2002-10-10 (Released:2011-03-04)

参考文献数

5

被引用文献数

2 1

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It is important that laboratory data to be constantly checked according to described package inserts during usage of medicines. However, many hepatic and renal disorders were reported to have strong adverse reactions for prescription drugs. We investigated the necessity of hepatic and renal function checks in package inserts for 3300 prescription drugs. As a result, the number of drugs which recommended checks on hepatic and renal functions were 240 (7.3%) and 209 (6.3%) respectively. The described expression or place regarding checks of hepatic and renal functions on package inserts were various types of unclear information to doctors and pharmacists. We thus found that the present style of package inserts unapprehensive to the necessity of hepatic and neral function checks. So, in our hospital, we decided to provide a list of drugs that required hepatic and renal function checks during administration of drugs.These findings suggest that the need of hepatic and renal functions monitoring during the administration of drugs by the establishment of a new Clinical Checks item in the package inserts is therefore necessary.

著者

中村 均 藤沼 由江 松元 美香 大谷 道輝 小瀧 一 内野 克喜 伊賀 立二

出版者

一般社団法人日本医療薬学会

雑誌

医療薬学 (ISSN:1346342X)

巻号頁・発行日

vol.27, no.5, pp.491-494, 2001-10-10 (Released:2011-03-04)

参考文献数

8

被引用文献数

2 1

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In the present study, we investigated the effect of inter-individual variation and dispensing experience as a factor of variation when mixing digoxin powders.Sixteen of the post-graduate trainees (non-experienced group) who entered the Department of Pharmacy, University of Tokyo Hospital in April 1996, and had no dispensing experience with powders, and six pharmacists (experienced group), who had individually amassed 3 to 5-years of dispensing experience, participated in our study.The mean CV values (n=3) of the digoxin contents in the experienced group were 2.7% on the first experiment, 2.7% on the second and 2.5% on the third. Eight of the non-experienced group members produced a CV of less than 6.08% in all experiments. However, the CV values generated by the other eight members of the non-experienced group exceeded the standards of good mixing, and in addition, wide variations were observed. The eight above described trainees had received 3 weeks of training, and, when the mixing experiments were performed again, the registered CV values were less than 6.08% in all experiments.These results showed that, even in the case of digoxin powders requiring a high degree of mixing, good mixing was obtained under our proposed mixing conditions in half of the trainees with no dispensing experience, and in addition, good mixing was generally obtained after all had received 3 weeks of training.

著者

野澤 茜 大谷 道輝 松元 美香 杉浦 宗敏 内野 克喜 山村 喜一 江藤 隆史

出版者

Japanese Dermatological Association

雑誌

日本皮膚科学会雑誌 (ISSN:0021499X)

巻号頁・発行日

vol.122, no.2, pp.371-373, 2012

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保湿剤の先発医薬品と後発医薬品の効果の差を健常人5名で乾燥皮膚モデルを用いて試験を行った.ヘパリノイド製剤のローションとクリームの先発医薬品と後発医薬品を1日2回10日間塗布し,角層中水分量を比較した.その結果,先発医薬品のローションとクリームいずれも後発医薬品に比べ,有意に水分量が増加した.医師は先発医薬品から後発医薬品に切り替えて使用する場合,期待した効果に有意な差が認められることを考慮すべきである.

著者

大谷 道輝 松元 美香 野澤 茜 山村 喜一 江藤 隆史

出版者

公益社団法人 日本皮膚科学会

雑誌

日本皮膚科学会雑誌 (ISSN:0021499X)

巻号頁・発行日

vol.123, no.14, pp.3117-3122, 2013

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ステロイド外用剤と保湿剤併用時の塗布順序と効果や副作用の関係については報告がほとんどないことから,皮膚科医や薬剤師は塗布順序を経験的に指示している.ステロイドの軟膏と保湿剤の併用について,ヘアレスラットを用いて塗布順序の副作用への影響を調べた.副作用の指標として,体重,脾臓重量,副腎重量および皮膚の厚さを調べた.混合した製剤も塗布順序と比較した.ステロイド外用剤はクロベタゾールプロピオン酸エステル軟膏を,保湿剤はヘパリン類似物質含有製剤および尿素製剤を選択した.その結果,ステロイド外用剤と保湿剤の併用では塗布順序は副作用に影響しないことが示された.また,混合後に塗布しても重ねて塗るのと差は認められなかった.

著者

中島 由紀 高尾 斎昭 前川 理沙 寺田 さとみ 椎尾 康 大谷 道輝 杉浦 宗敏 山村 喜一 内野 克喜

出版者

一般社団法人日本医療薬学会

雑誌

医療薬学 (ISSN:1346342X)

巻号頁・発行日

vol.37, no.5, pp.323-325, 2011 (Released:2012-08-02)

参考文献数

7

被引用文献数

1 1

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We prepared dried thyroid rectal suppositories for the treatment of thyroid papillary adenocarcinoma in patients with hypothyroidism in response to clinicians’ requests. The suppositories had a content of 50 mg or 100 mg and were prepared using dried thyroid powder and hard fat. The initial daily dose of 100 mg, which was given as a single dose in the morning, could be increased on the basis of thyroid stimulating hormone (TSH) levels, as required. In addition, an oral dose of levothyroxine sodium hydrate 150 μg could be switched to a dose of 300 mg of dried thyroid rectal suppositories in this patient.These results suggested that the dose of dried thyroid rectal suppositories for the treatment of hypothyroidism should be titrated for individual patients based on TSH levels.

著者

大谷 道輝 川端 志津 假家 悟 内野 克喜 伊藤 敬 小瀧 一 籾山 邦男 森川 亜紀 瀬尾 巖 西田 紀子

出版者

公益社団法人日本薬学会

雑誌

藥學雜誌 (ISSN:00316903)

巻号頁・発行日

vol.122, no.5, pp.323-329, 2002-05-01

被引用文献数

1 12

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The effect of the intake of 200g of grapefruit pulp (corresponding to one grapefruit) on the pharmacokinetics of the calcium antagonists nifedipine (NF) and nisoldipine (NS) were investigated in 8 healthy Japanese male volunteers. A crossover design was used for the study: group I did not ingest any grapefruit (control group); group II ingested grapefruit 1 h after drug administration; and group III ingested grapefruit 1 h before drug administration. The intake of grapefruit pulp increased the plasma concentrations of both NF and NS, an effect that has previously been reported with grapefruit juice. The increase was most marked when grapefruit was eaten before drug administration. For both NF and NS, subjects who ingested grapefruit 1 h before drug administration exhibited a greater C_<max> and AUC_<0-24> than did subjects in the control group. For NF, the C_<max> was 1.4 times higher and the AUC_<0-24> 1.3 times larger in group III than in group I. For NS, the C_<max> was 1.5 times higher and the AUC_<0-24> 1.3 times larger in group III than in group I. The increase in the AUC_<0-24> was significant for both drugs (p<0.05). The finding that the ratios of C_<max> and AUC_<0-24> for unchanged drug and metabolites did not vary greatly among the three groups for either drug suggests that the increase in serum concentration produced by grapefruit intake may be due to other factors than an inhibitory effect on drug metabolism. Also, the increases in C_<max> and AUC_<0-24> of NS produced by grapefruit intake were smaller than those produced by grapefruit juice intake, indicating that grapefruit pulp and juice have different effects on the pharmacokinetics.

著者

大谷 道輝 中井 達郎 大沢 幸嗣 金 素安 松元 美香 江藤 隆史 假家 悟 加野 象次郎 内野 克喜

出版者

公益社団法人 日本薬学会

雑誌

YAKUGAKU ZASSHI (ISSN:00316903)

巻号頁・発行日

vol.122, no.12, pp.1153-1158, 2002-12-01 (Released:2003-02-18)

参考文献数

24

被引用文献数

10 12

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Twenty percent of dermatologists have experienced a separation of water or deterioration of topical corticosteroids mixed with commercially available ointments and/or creams. However, few investigations of this deterioration of admixtures have been reported. To assess the effects of preservatives in preventing microbial contamination of these admixtures, we attempted to investigate the concentration of preservative agents in admixtures and the microbial contamination of these admixtures with a topical corticosteroid ointment (Antebate®). The concentration of parabens was reduced by half using an admixture of corticosteroid ointment with four types of moisturizing creams, Urepearl, Pastaronsoft, Hirudoid, and Hirudoidsoft. After a further 3 months, no decrease in parabens was seen. No microbial contamination was found in any admixture stored at room temperature for 1 week and touched two times daily with a finger. The concentration and ratio of the parabens in the aqueous phase and oil phase were entirely different in the admixtures before being centrifuged. The aqueous phase of the admixtures of the oil/water (O/W)-type emulsions of Urepearl and Hirudoid was not found to have microbial contamination immediately after being centrifuged. All aqueous phases stored at room temperature or in a refrigerator for 1 week and touched with a finger twice daily exhibited microbial contamination. These experiments demonstrated that O/W-type emulsions, in which the water easily separates from the bases, should be thoroughly mixed to prevent microbial contamination.