Characteristics of corneal phospholipidosis induced by topical ocular application of chloroquine and amiodarone in rabbits
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- Yamagiwa Yoshinori
- Pharmacokinetics and Toxicology Research Laboratories, Senju Pharmaceutical Co., Ltd., 1-5-4 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan
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- Haranosono Yu
- Pharmacokinetics and Toxicology Research Laboratories, Senju Pharmaceutical Co., Ltd., 1-5-4 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan
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- Nemoto Shingo
- Pharmacokinetics and Toxicology Research Laboratories, Senju Pharmaceutical Co., Ltd., 1-5-4 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan
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- Atsumi Ikuyo
- Pharmacokinetics and Toxicology Research Laboratories, Senju Pharmaceutical Co., Ltd., 1-5-4 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan
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- Kurata Masaaki
- Pharmacokinetics and Toxicology Research Laboratories, Senju Pharmaceutical Co., Ltd., 1-5-4 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan
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- Kito Gakushi
- Pharmacokinetics and Toxicology Research Laboratories, Senju Pharmaceutical Co., Ltd., 1-5-4 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan
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- Hatakeyama Hirofumi
- Clinical Pathology Department, Ina Research Inc., 2148-288 Nishi-minowa, Ina, Nagano 399-4501, Japan
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- Koizumi Haruko
- Clinical Pathology Department, Ina Research Inc., 2148-288 Nishi-minowa, Ina, Nagano 399-4501, Japan
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- Sakaki Hideyuki
- Pharmacokinetics and Toxicology Research Laboratories, Senju Pharmaceutical Co., Ltd., 1-5-4 Murotani, Nishi-ku, Kobe, Hyogo 651-2241, Japan
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<p> Several cationic-amphiphilic drugs such as chloroquine and amiodarone are known to induce phospholipidosis in the cornea by systemic administration. However, the characteristics of ophthalmological and pathological changes when phospholipidosis-inducing drugs are topically applied have not been well studied. This study was conducted to investigate the characteristics of corneal changes caused by topical application of chloroquine and amiodarone to Japanese white rabbits. The changes were evaluated by ophthalmological, histopathological, and ultrastructural examinations. An in vivo confocal microscopy was also applied to the chloroquine-treated corneas. In both chloroquine- and amiodarone-treated corneas, diffuse cloudiness was observed by slit-lamp biomicroscopy, and its transparency increased with duration of dosing. Confocal microscopy showed punctate dots in the corneal epithelium. Histopathologically, cytoplasmic vacuolation was found in the corneal epithelium and keratocytes in both chloroquine- and amiodarone-treated eyes. Furthermore, foamy cytoplasm of the corneal endothelium was observed in the chloroquine-treated eyes. Ultrastructural examination showed multi-lamellar inclusion bodies or membrane-like debris in the lysosome-like vacuoles in the cytoplasm of corneal cells, which is a characteristic of the lesions of phospholipidosis. These changes disappeared after a withdrawal period. Continuous dosing of chloroquine resulted in corneal erosion and focal corneal opacity as shown by gross observation and slit-lamp biomicroscopy. Confocal microscopy could detect the corneal changes prior to the appearance of these ophthalmological changes. The present study showed that phospholipidosis caused by ocular administration of chloroquine and amiodarone first induces reversible diffuse corneal cloudiness. Confocal microscopy is a useful method for monitoring induction of corneal phospholipidosis.</p>
収録刊行物
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- Journal of Toxicologic Pathology
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Journal of Toxicologic Pathology 30 (2), 135-143, 2017
日本毒性病理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204416385920
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- NII論文ID
- 130005626481
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- NII書誌ID
- AN10232280
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- ISSN
- 1881915X
- 09149198
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- NDL書誌ID
- 028198488
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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