Michiko Aihara
Yokohama City University Medical Center
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Featured researches published by Michiko Aihara.
American Journal of Ophthalmology | 2015
Chie Sotozono; Mayumi Ueta; Eiji Nakatani; Amane Kitami; Hideaki Watanabe; Hirohiko Sueki; Masafumi Iijima; Michiko Aihara; Zenro Ikezawa; Yukoh Aihara; Yoko Kano; Tetsuo Shiohara; Mikiko Tohyama; Yuji Shirakata; Hideaki Kaneda; Masanori Fukushima; Shigeru Kinoshita; Koji Hashimoto
PURPOSEnTo suggest an objective score for grading the acute ocular severity of Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), and to determine predictive factors for severe acute ocular involvement such as ocular surface epithelial defect and/or pseudomembrane formation.nnnDESIGNnRetrospective cohort study.nnnMETHODSnThe medical records of SJS (n = 87) and TEN (n = 48) patients between 2005 and 2007 were reviewed. An acute ocular severity score was determined on a scale from 0 to 3 (none, mild, severe, and very severe) according to the existence of hyperemia, corneal or conjunctival epithelial defect, and pseudomembrane formation. The associations between the severe acute ocular involvement and factors such as patient age, exposed drugs, systemic severity, and the prevalence of ocular sequelae were examined.nnnRESULTSnThe number of cases with score grade 0, 1, 2, and 3 was 19 (21.8%), 31 (35.6%), 22 (25.3%), and 15 (17.2%) in 87 SJS cases and 12 (25.0%), 11 (22.9%), 17 (35.4%), and 8 (16.7%) in 48 TEN cases. Multivariate logistic regression analysis revealed that patient age (odds ratio [OR], 0.98; 95% confidence interval [CI], 0.96-0.99; P = .007) and nonsteroidal anti-inflammatory drugs NSAIDs or cold remedies (OR, 2.58; 95% CI, 1.26-5.29; P = .010) were predictive factors for severe acute ocular involvement. The prevalence of visual disturbance and eye dryness increased according to the increase of acute ocular severity (P = .001 and P = .007 in SJS; P = .007 and P = .014 in TEN, respectively).nnnCONCLUSIONSnAt the onset of SJS/TEN, strict attention should be paid to ocular involvement in young patients and in patients exposed to NSAIDs or cold remedies.
Pediatrics International | 2007
Yukoh Aihara; Reiko Ito; Shuichi Ito; Michiko Aihara; Shumpei Yokota
© 2007 Japan Pediatric Society Toxic epidermal necrolysis (TEN) is an acute and life-threatening disease that is characterized by severe necrosis of the skin. It also involves visceral organs and manifests systemic symptoms. 1,2 Some medicines and infections are known to be major precipitating factors of the disease. 3 TEN and Stevens – Johnson syndrome (SJS) are now categorized into the same type of disorder. 4 The mortality rate of TEN is 30 – 35% and prompt management including withdrawal of causative drugs with long half-lives is essential for a favorable outcome. 5 Many drugs such as corticosteroids, i.v. immunoglobulin, 3 and thalidomide 6 are used as treatment for TEN, but these drugs are unsatisfactory in effi cacy. In the current report we present a pediatric case of TEN associated with leukopenia successfully treated with i.v. cyclosporin A (CsA), methylprednisolone and granulocyte-colony stimulating factor (G-CSF).
Pediatrics International | 2005
Yukoh Aihara; Shuichi Ito; Michiko Aihara; Yoshinori Kobayashi; Shumpei Yokota
Abstract Objectives :u2002Drug‐induced hypersensitivity syndrome (HS) is a rare but life‐threatening disease. We experienced carbamazepine‐induced HS in a 14‐year‐old boy, who had cefaclor‐induced cutaneous eruptions 15 months later. To clarify the mechanisms of HS and the differences between two diseases we studied this case in detail.
Journal of Dermatology | 2012
Yukoh Aihara; Yoshitaka Oyama; Kazushi Ichikawa; Saoko Takeshita; Yukitoshi Takahashi; Takeshi Kambara; Michiko Aihara
and ⁄ or dorsal hand involvement. Sweet syndrome affect adults in their third to fifth decades. However, the mean age at onset in the reviewed NDDH cases was 61 years, which is similar to the mean age reported in previous studies. The mean age of the reviewed NDP cases was 75.5 years, which is statistically much greater than that of the NDDH cases (P < 0.01, Mann–Whitney U-test). The difference in the age of onset between NDDH and NDP probably reflects a difference in their pathogenesis. Furthermore, in our review, the NDDH cases were strongly associated with malignant disorders, whereas the NDP cases were not. The latter showed a typical dermal neutrophilic infiltrate with neither vasculitis nor fibrinoid necrosis, whereas vascular damage was frequently observed in the NDDH cases. Some researchers recently suggested that vasculitis in SS is not a primary process but occurs secondary to the release of noxious products by neutrophils. However, the presence of vasculitis apparently differs between NDP and NDDH, and is very likely to be associated with the difference in their pathogenesis. We consider that more cases are necessary to confirm these points presented in this article. Kaoru IMAOKA, Sakae KANEKO, Yuji HARADA, Masataka OTA, Minao FURUMURA, Eishin MORITA Departments of Dermatology and Pathology, Shimane University Faculty of Medicine, Izumo, Japan
European Journal of Dermatology | 2014
Tomoya Watanabe; Takahisa Uchida; Hiroyuki Fujita; Takeshi Kambara; Yukie Yamaguchi; Michiko Aihara
Abstract
Journal of Medical Virology | 2005
Naoko Mitani; Michiko Aihara; Yuko Yamakawa; Masako Yamada; Norihiko Itoh; Nobuhisa Mizuki; Zenro Ikezawa
Allergy | 2004
Yukoh Aihara; Shuichi Ito; Yoshinori Kobayashi; Michiko Aihara
Journal of environmental dermatology : the official journal of the Japanese Society for Contact Dermatitis | 2002
Setsuko Matsukura; Michiko Aihara; Zenro Ikezawa
Archive | 2010
Satoshi Miyata; Kaoru Miyazaki; Chie Yasuda; Akihiro Iwamatsu; Zenro Ikezawa; Michiko Aihara; Kayano Moriyama
Journal of environmental dermatology : the official journal of the Japanese Society for Contact Dermatitis | 2002
Yuko Ikezawa; Michiko Aihara; Megumi Kondo; Sanami Takahashi; Kazuo Takahashi; Zenro Ikezawa