Ritsuko Hayakawa

Japanese Red Cross Nagoya Daiichi Hospital

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Kayoko Matsunaga

Fujita Health University

Mariko Sugiura

Japanese Red Cross Nagoya Daiichi Hospital

Keiji Sugiura

Daiichi University of Pharmacy

Yoshimi Kato

Fujita Health University

Mari Suzuki

Tokyo Women's Medical University

Yasuko Ogino

JA Toride Medical Center

Mikihiro Shamoto

National Sanyo Hospital

Chikako Ukei

Nagoya University Hospital

Kumiko Ohiwa

Nagoya University Hospital

Hiroshi Ueda

Tokyo Institute of Technology

Cooperative Institutions

Nagoya University

Nagoya University Hospital

Fujita Health University

Kyoto University

Osaka City University

University of California, San Francisco

Inserm

Osaka University

Osaka Kaisei Hospital

The University of Tokyo

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Lipstick dermatitis due to C₁₈ aliphatic compounds

Contact Dermatitis (1987)

Ritsuko Hayakawa Kayoko Matsunaga Mari Suzuki Yaeno Arima Yukari Ohkido

An 18-year-old girl developed cheilitis. She had a past history of lip cream dermatitis, but the cause was not found. Patch tests with 2 lipsticks were strongly positive. Tests with the ingredients were positive to 2 aliphatic compounds, glyceryl diisostearate and diisostearyl malate. Impurities in the materials were suspected as the cause. Analysis by gas chromatography detected 3 chemicals in glyceryl diisostearate and 1 in diisostearyl malate as impurities. Patch testing with the impurities and glyceryl monoisostearate 0.01% pet in glyceryl diisostearate and isostearyl alcohol 0.25% pet in diisostearyl malate were strongly positive. The characteristics common to the 2 chemicals were liquidity at room temperature, branched C18 aliphatic compound and primary alcohol. Chemicals lacking any of the above 3 features did not react.

Patch Testing

10.1111/j.1600-0536.1987.tb01428.x

Cite

Citations (26)

Contact Dermatitis with Topical Medicaments

Ritsuko Hayakawa Kayoko Matsunaga Chikako Ukei Kumiko Ohiwa Kanehisa Fukuta

10.11340/skinresearch1959.25.634

Cite

Citations (8)

Safety Evaluation of S-8130

Skin research (1986)

Ritsuko Hayakawa

10.11340/skinresearch1959.28.242

Cite

Citations (0)

Allergic Contact Dermatitits due to Topical Medicaments

Skin research (1993)

Kayoko Suzuki Ritsuko Hayakawa Mari Suzuki Yasuko Ogino Yoshiko Fujimoto

10.11340/skinresearch1959.35.21

Cite

Citations (0)

Safety Evaluation of S-7990

Skin research (1988)

Ritsuko Hayakawa

10.11340/skinresearch1959.30.221

Cite

Citations (0)

The Nishinihon Journal of Dermatology (1982)

Ritsuko Hayakawa Kayoko Matsunaga Kumiko Ohiwa Mie Kobayashi Mari Yoshida

コルチコステロイド含有軟膏(「ス」軟)7製品, コルチコステロイド含有クリーム(「ス」クリーム)9製品, コルチコステロイド含有ゲル(「ス」ゲル)3製品, 非ステロイド抗炎症剤含有軟膏(非「ス」軟)2製品, 非ステロイド抗炎症剤含有クリーム(非「ス」クリーム)2製品の合計23製品, およびホリスタースティア, トリイアレルゲンのうちから外用剤に配合されている可能性の高いアレルゲン27種と基剤2種を114例の皮膚疾患患者にclosed patch testを施行した。Closed patch testの結果製品の(+)以上(本邦基準)陽性率は48時間判定, 72時間判定の順に, 「ス」軟1.5%, 0.8%, 「ス」クリーム1.8%, 2.0%, 「ス」ゲル9.2%, 15.1%, 非「ス」軟6.2%, 5.4%, 非「ス」クリーム6.6%, 10.6%あつた。アレルゲンの陽性率(ICDRG基準)は上位5位まで, ネオマイシン13.8%, アクリノール5.4%, レゾルシン3.4%, ラノリンアルコール3.3%, P. G. 3.3%, ホルマリン3.3%, メントール3.3%であつた。

10.2336/nishinihonhifu.44.590

Cite

Citations (0)

Safety evaluation of Nov lipsticks and foundation cream developed for sensitive skin

Environmental dermatology (1998)

Mariko Sugiura Ritsuko Hayakawa Yoshimi Kato Kayoko Matsunaga Kayoko Suzuki

Foundation (evidence)

Source

Cite

Citations (0)

Use study of makeup cosmetics for sensitive skin on the patients with a history of contact dermatitis and atopic dermatitis

Kayoko Matsunaga Akiko Yagami Ritsuko Hayakawa Mariko Sugiura Tetsurou Sugai

Irritant contact dermatitis

Cite

Citations (0)

Is sesamaol present in sesame oil?

Contact Dermatitis (1987)

Ritsuko Hayakawa Kayoko Matsunaga Mari Suzuki Kaori Hosokawa Yaeno Arima

Sesame oil has been reported to contain sesamolin, sesamin and sesamol as contact allergens. A female patient had chelitis due to sesame oil in a lipstick. She reacted to sesamolin and sesamin, but not to sesamol. We earned mil analysis of the sesame oil by high performance liquid chromatography. We detected sesamolin and sesamin but not sesamol in sesame oil.

Sesamol

Sesamin

Sesame oil

Sesame seed

10.1111/j.1600-0536.1987.tb02690.x

Cite

Citations (30)

Study of Skin Safety of Kindavate Ointment (0. 05% Clobetasone 17-Butyrate)

Skin research (1985)

Kayoko Matsimaga Ritsuko Hayakawa

Source

Cite

Citations (0)