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Sakakura S, Inagaki E, Ochiai Y, Yamamoto M, Takai N, Nagata T, Higa K, Sato Y, Toshida H, Murat D, Hirayama M, Ogawa Y, Negishi K, Shimmura S. A Comprehensive Assessment of Tear-Film-Oriented Diagnosis (TFOD) in a Dacryoadenectomy Dry Eye Model. Int J Mol Sci 2023; 24:16510. [PMID: 38003700 PMCID: PMC10671533 DOI: 10.3390/ijms242216510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/06/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
Tear film instability is a major cause of dry eye disease. In order to treat patients with short tear film breakup time (TBUT)-type dry eye, the development of tear film stabilizing agents is essential. However, the lack of an appropriate animal model of tear film instability has made drug development difficult. Although rabbit dry eye models have been reported in the past, there are only a few reports that focus on tear film instability. Herein, we assessed the tear film stability of a rabbit dry eye model induced by dacryoadenectomy. A clinical evaluation of the ocular surface, interferometry, and histological assessments of the cornea and conjunctiva were performed. Following the removal of the lacrimal glands, TBUT was shortened significantly, with dimple and random breakup patterns prominently observed. Furthermore, the blink rate in this model increased after dacryoadenectomy, suggesting that this model partially captured the phenotypes of human short TBUT-type dry eye and may be useful as an animal model for investigating potential drug candidates.
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Affiliation(s)
- Saki Sakakura
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan (M.H.); (K.N.)
| | - Emi Inagaki
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan (M.H.); (K.N.)
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
- Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Yuichiro Ochiai
- Kitayama Labes Co., Ltd., 3052-1 Arai, Ina City 396-0025, Japan
| | | | - Naofumi Takai
- Kitayama Labes Co., Ltd., 3052-1 Arai, Ina City 396-0025, Japan
| | - Taeko Nagata
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan (M.H.); (K.N.)
| | - Kazunari Higa
- Cornea Center and Eye Bank, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa 272-8513, Japan;
| | - Yasunori Sato
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan;
| | - Hiroshi Toshida
- Department of Ophthalmology, Juntendo University Shizuoka Hospital, Nagaoka 1129, Izunokuni City 410-2295, Japan;
| | - Dogru Murat
- Department of Ophthalmology, Tsurumi University, 2-1-3 Tsurumi, Yokohama 230-0063, Japan
| | - Masatoshi Hirayama
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan (M.H.); (K.N.)
| | - Yoko Ogawa
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan (M.H.); (K.N.)
| | - Kazuno Negishi
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan (M.H.); (K.N.)
| | - Shigeto Shimmura
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan (M.H.); (K.N.)
- Department of Clinical Regenerative Medicine, Fujita Medical Innovation Center, Fujita Health University, Haneda Innovation City Zone A, 1-1-4 Hanedakuko, Ota-ku, Tokyo 144-0041, Japan
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Kodama A, Murat D, Fujishima H, Fukagawa K. Using eye drops in compliance may improve the symptoms and quality of life in patients with seasonal allergic conjunctivitis: analysis of a two-season web survey. Int J Ophthalmol 2023; 16:988-991. [PMID: 37332551 PMCID: PMC10250941 DOI: 10.18240/ijo.2023.06.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/20/2023] [Indexed: 06/20/2023] Open
Affiliation(s)
- Asako Kodama
- Department of Ophthalmology, Eiju General Hospital, Tokyo 110-8645, Japan
| | - Dogru Murat
- Department of Ophthalmology, Tsurumi University School of Dental Medicine, Kanagawa 230-0063, Japan
| | - Hiroshi Fujishima
- Department of Ophthalmology, Tsurumi University School of Dental Medicine, Kanagawa 230-0063, Japan
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Oba S, Araki-Sasaki K, Chihara T, Kojima T, Murat D, Takahashi K. Aberrant Corneal Homeostasis in Neurosurgery-Induced Neurotrophic Keratopathy. J Clin Med 2022; 11:jcm11133804. [PMID: 35807085 PMCID: PMC9267273 DOI: 10.3390/jcm11133804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022] Open
Abstract
The characteristic features of neurotrophic keratopathy have been well documented by in vivo and in vitro studies using animal models. However, case reports of neurotrophic keratopathy induced by neurosurgery are limited. We describe the clinical characteristics, anterior segment optical coherence tomography (AS-OCT) and in vivo confocal microscopy (IVCM) findings of neurotrophic keratopathy induced by surgery for intracranial lesions. This is a case series including 6 eyes of 3 patients (mean age, 69.67 ± 12.50 years) with unilateral neurotrophic keratopathy. The clinical findings of three patients were described and IVCM findings of three patients were analyzed. The duration of neuropathy ranged from 2 to 30 years (median, 22 years). Thickening of the epithelial layer and higher reflection density of the anterior stroma were observed during the healing process using AS-OCT. The mean nerve fiber density of the subepithelial plexus, as determined by IVCM, was 1943 ± 1000 μm/mm2 for neurotrophic eyes and 2242 ± 600.3 μm/mm2 for contralateral eyes (p = 0.0347). The mean respective dendritic cell densities were 30.8 ± 21.8 and 6.25 ± 5.59 cells/mm2 (p < 0.0001), while the mean basal cell sizes were 259 ± 86.5 and 185 ± 45.9 μm2 (p < 0.0001), respectively. These findings suggest that neurosurgery-induced neurotrophic keratopathy may be associated with alterations in the healing process and immune cell distribution in the cornea.
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Affiliation(s)
- Shimpei Oba
- Department of Ophthalmology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan; (S.O.); (T.C.); (K.T.)
| | - Kaoru Araki-Sasaki
- Department of Ophthalmology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan; (S.O.); (T.C.); (K.T.)
- Correspondence: ; Tel.: +81-72-804-0101
| | - Tomoyuki Chihara
- Department of Ophthalmology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan; (S.O.); (T.C.); (K.T.)
| | - Takashi Kojima
- Department of Ophthalmology, Keio University School of Medicine, 2-15-45 Mita, Minato-ku, Tokyo 108-8345, Japan; (T.K.); (D.M.)
| | - Dogru Murat
- Department of Ophthalmology, Keio University School of Medicine, 2-15-45 Mita, Minato-ku, Tokyo 108-8345, Japan; (T.K.); (D.M.)
| | - Kanji Takahashi
- Department of Ophthalmology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan; (S.O.); (T.C.); (K.T.)
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Shimizu E, Yazu H, Satake Y, Fukagawa K, Aketa N, Murat D, Okada N, Fujishima H. The Effect of Cytokine-Stimulation and Pharmacologic Intervention on PGE2 Production in Primary Human Conjunctival and Corneal Cells. Ocul Immunol Inflamm 2020; 28:384-390. [PMID: 31120777 DOI: 10.1080/09273948.2019.1595669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We studied the production of PGE2 by human conjunctival and corneal cells in response to inflammation, and reduction of inflammation with non-steroidal anti-inflammatory drugs. Primary cultures of human conjunctival epithelial cells, fibroblasts, corneal epithelial cells, and keratocytes were incubated with IL-4 and TNF-α. PGE2 and COX-2 levels were analyzed. Effects of anti-inflammatory and anti-immune drugs on PGE2 production were also investigated. IL-4 and TNF-α induced the generation of PGE2 and COX-2 in conjunctival and corneal cells. Epithelial PGE2 production was significantly lower than in keratocytes and fibroblasts, which was down-regulated by aspirin. IL-4 and TNF-α enhanced the inflammatory response via prostaglandin production which contributed to ocular surface inflammation. Prostaglandin production was higher in stromal cells than epithelial cells. These results suggest that the epithelial barrier disruption may contribute to ocular allergic inflammation by the PGE2 production from stromal cells. Moreover, NSAIDs were effective in suppressing PGE2 production in our experiment.
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Affiliation(s)
- Eisuke Shimizu
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Hiroyuki Yazu
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.,Department of Ophthalmology, Tsurumi University School of Dental Medicine, Kanagawa, Japan
| | - Yoshiyuki Satake
- Department of Ophthalmology, Tokyo Dental College, Ichikawa, Chiba, Japan
| | | | - Naohiko Aketa
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Dogru Murat
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Naoko Okada
- Department of Ophthalmology, Tsurumi University School of Dental Medicine, Kanagawa, Japan.,Department of Pharmaceutical Sciences, Nihon Pharmaceutical Hospital, Saitama, Japan
| | - Hiroshi Fujishima
- Department of Ophthalmology, Tsurumi University School of Dental Medicine, Kanagawa, Japan
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Ogawa A, Yamaguchi T, Mitamura H, Tomida D, Shimazaki-Den S, Murat D, Satake Y, Shimazaki J. Aetiology-specific comparison of long-term outcome of deep anterior lamellar keratoplasty for corneal diseases. Br J Ophthalmol 2015; 100:1176-82. [PMID: 26701685 DOI: 10.1136/bjophthalmol-2015-307427] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 11/28/2015] [Indexed: 11/04/2022]
Abstract
AIMS To evaluate the long-term outcome of deep anterior lamellar keratoplasty (DALK) for the treatment of herpetic keratitis, keratoconus, stromal scars and corneal dystrophies. METHODS This retrospective consecutive case study includes 275 consecutive eyes of 254 patients who underwent DALK; 35 eyes with herpetic keratitis, 114 eyes with stromal scar, 93 eyes with keratoconus and 67 eyes with corneal dystrophy. Exclusion criteria included therapeutic DALK for the treatment of descemetocele or infectious keratitis, and eyes with limbal stem cell deficiency. Patients were examined at 1, 3 and 6 months, and 1, 3 and 5 years after DALK. Graft survival rate, best corrected visual acuity (BCVA), endothelial cell density (ECD) and postoperative complications were evaluated. RESULTS The mean postoperative follow-up duration was 51±41 months. The graft survival rate of all subjects was 96.8% at 1 year, 89.9% at 3 years, 83.5% at 5 years and 74.1% at 10 years. At 6 months, BCVA significantly improved from 1.14±0.54 to 0.22±0.21 in the keratoconus group, from 1.13±0.60 to 0.44±0.54 in the herpes group, from 1.00±0.59 to 0.49±0.38 in the stromal scar group and from 1.04±0.52 to 0.32±0.29 in the corneal dystrophy group (all, p<0.0001). BCVA stabilised after 6 months thereafter up to 5 years. ECD decreased just after DALK and maintained >1000 cell/mm(2) at 5 years in all groups. CONCLUSIONS DALK provides good visual acuity with slight ECD decrease over long term in all groups.
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Affiliation(s)
- Akiko Ogawa
- Department of Ophthalmology, Ichikawa General Hospital, Tokyo Dental College, Chiba, Japan Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Takefumi Yamaguchi
- Department of Ophthalmology, Ichikawa General Hospital, Tokyo Dental College, Chiba, Japan Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Hiroto Mitamura
- Department of Ophthalmology, Ichikawa General Hospital, Tokyo Dental College, Chiba, Japan Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Daisuke Tomida
- Department of Ophthalmology, Ichikawa General Hospital, Tokyo Dental College, Chiba, Japan
| | - Seika Shimazaki-Den
- Department of Ophthalmology, Ichikawa General Hospital, Tokyo Dental College, Chiba, Japan
| | - Dogru Murat
- Department of Ophthalmology, Ichikawa General Hospital, Tokyo Dental College, Chiba, Japan Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Yoshiyuki Satake
- Department of Ophthalmology, Ichikawa General Hospital, Tokyo Dental College, Chiba, Japan
| | - Jun Shimazaki
- Department of Ophthalmology, Ichikawa General Hospital, Tokyo Dental College, Chiba, Japan Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
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Abstract
PURPOSE To evaluate the efficacy of bromfenac sodium ophthalmic solution (BF) in patients with dry eye disease (DED) inadequately controlled by monotherapy with artificial tears (ATs). DESIGN An investigator-oriented trial with a single-arm, nonrandomized, open-label design. METHODS Twenty-six patients, who showed no symptomatic improvement of DED after 1 month of AT treatment, were enrolled. Bromfenac sodium ophthalmic solution was administered adjunctively with AT for 1 month. The BF treatment was then discontinued, and AT treatment alone was continued for 3 months. The signs and symptoms were evaluated at the beginning of BF treatment (Pre), at the end of the combined BF and AT treatment (BF1M), and at 1 and 3 months after discontinuation of BF treatment (Po1M and Po3M, respectively). RESULTS The dryness scores at BF1M were significantly improved compared with Pre (P < 0.001) and significantly superior to Po3M (P < 0.001). No significant changes in the Schirmer scores were observed throughout the treatment period. The tear film breakup time was significantly improved at BF1M (4.4 ± 2.3 seconds) compared with Pre (2.8 ± 1.8 seconds; P < 0.001). Superficial punctate keratopathy showed significant improvements in the total score of area and density at BF1M compared with Pre (P < 0.001). However, these parameters had significantly worsened at Po3M compared with BF1M. No adverse events were observed. CONCLUSIONS Bromfenac sodium ophthalmic solution has improved the dryness of the eye and signs of DED through its anti-inflammatory effects. Nonsteroidal anti-inflammatory drugs were suitable as anti-inflammatory ophthalmic solutions for patients with DED.
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Affiliation(s)
- Hiroshi Fujishima
- From the *Department of Ophthalmology, Tsurumi University School of Dental Medicine, Kanagawa; and †Department of Ophthalmology, Tokyo Saiseikai Central Hospital; and ‡J&J Ocular Surface and Visual Optics Department, Keio University School of Medicine, Tokyo, Japan
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Abstract
PURPOSE To evaluate the efficacy and safety of new moist cool air device (MCAD) for ocular symptoms, tear film stability and ocular surface status in office workers with dry eye disease (DED). METHODS In this prospective single-centre clinical trial, 40 eyes of 20 patients with DED were recruited and randomly divided into two groups (group with MCAD exposure and group without MCAD). All subjects are visual display terminals (VDTs) workers spending at least 4 h/day in front of VDTs. Patients using MCAD underwent moist air applications for 4 h/day for a total of five working weekdays during VDT works at their offices. The other group of patients performed their VDT work without moist cool air device exposure. The change in symptoms of ocular surface (OS) dryness, fatigue and discomfort was evaluated using visual analogue scale (VAS) scores. Changes in visual function, tear functions and ocular surface status were evaluated using best-corrected visual acuity (BCVA), the functional visual acuity (FVA) test, blink rate, BUT measurements, strip meniscometry (SM), tear evaporation rate, fluorescein staining and rose bengal staining scores. Tear film lipid layer interferometry was also performed to assess the status of the lipid layer over the tear film. In addition, adverse events were recorded. RESULTS In group with MCAD, symptoms of OS dryness during VDTs work, and FVA and BUT were significantly improved. SM and tear evaporation rate were significantly improved. There were no statistically significant differences on lipid layer stability and corneal staining scores in both groups. Blink rate was significantly increased in group without MCAD. No adverse events were reported during this trial. CONCLUSION Moist cool air device use provided symptomatic relief of ocular dryness and improvement on tear stability in office workers with DED. This new device seems to be a safe and promising alternative in the treatment of DED.
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Affiliation(s)
- Masatoshi Hirayama
- Department of Ophthalmology, School of Medicine, Keio University, Tokyo, JapanMinami-Aoyama Eye Clinic, Tokyo, Japan
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Ozeki N, Yuki K, Shiba D, Shimmura S, Murat D, Tsubota K. Intraocular pressure elevation after Descemet’s stripping endothelial keratoplasty. Jpn J Ophthalmol 2012; 56:307-11. [DOI: 10.1007/s10384-012-0149-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Accepted: 03/26/2012] [Indexed: 10/28/2022]
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Matsumoto Y, Murat D, Kojima T, Shimazaki J, Tsubota K. The comparison of solitary topical micafungin or fluconazole application in the treatment of Candida fungal keratitis. Br J Ophthalmol 2010; 95:1406-9. [PMID: 21097785 DOI: 10.1136/bjo.2010.191734] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AIM To compare and evaluate the efficacy of topical 0.1% micafungin (MCFG) and topical 0.2% fluconazole (FCZ) in the treatment of Candida fungal keratitis. METHODS Twenty-nine eyes of 29 patients who were diagnosed as having Candida fungal keratitis, proven by corneal culture isolates, were investigated in this prospective study. Patients were divided into a MCFG treatment group (12 eyes) and an FCZ treatment group (17 eyes). Age, gender, initial status of ulcer (ulcer size and degree of injection), initial and final best-corrected visual acuity (BCVA), healing periods, final status of cornea and recurrences in each group were studied and compared. RESULTS There were no significant differences in relation to age, gender, ulcer size and degree of injection before treatment between the two groups. There were also no significant differences in the healing periods until complete epithelialisation (MCFG treatment group (41.3 ± 38.0 days); FCZ treatment group (34.4 ± 37.7 days)), change in BCVA, corneal clarity/opacification, perforation and recurrence status at the final examination between the two groups. CONCLUSION The efficacy of 0.1% MCFG eye-drops appears to be comparable with that of 0.2% FCZ eye-drops in the treatment of Candida fungal keratitis.
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Affiliation(s)
- Yukihiro Matsumoto
- Johnson & Johnson, Department of Ocular Surface and Visual Optics, Keio University School of Medicine, Tokyo 160-8582, Japan
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Yuki K, Murat D, Kimura I, Tsubota K. Increased serum total antioxidant status and decreased urinary 8-hydroxy-2'-deoxyguanosine levels in patients with normal-tension glaucoma. Acta Ophthalmol 2010; 88:e259-64. [PMID: 20977690 DOI: 10.1111/j.1755-3768.2010.01997.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE To investigate the amount of systemic oxidative stress-related DNA damage and serum total antioxidant status of patients with normal-tension glaucoma compared with healthy controls. METHODS Forty-three patients with normal-tension glaucoma selected from 60 consecutive newly diagnosed patients with primary open-angle glaucoma were enrolled. Each patient's intraocular pressure (IOP) was measured seven times over a 24-hour period. Those whose highest IOP was over 21 mmHg were excluded. Forty control subjects were recruited. The serum total antioxidant status was assessed colorimetrically by its ability to reduce the generation of the radical cation ABTS (2,2-azinobis-3-ethylbenzthiazoline sulphonate). The urinary 8-hydroxy-2'-deoxyguanosine was measured as a marker of oxidative DNA damage and normalized to creatinine. The results were compared between healthy subjects and patients with normal-tension glaucoma. RESULTS The control and normal-tension glaucoma groups did now show significant differences for age, gender, serum fructosamine, cholesterol and triglyceride levels; systolic and diastolic blood pressure, body mass index; and prevalence of hypertension. The serum total antioxidant status was significantly higher (p = 0.01) and the urinary 8-hydroxy-2'-deoxyguanosine/creatinine level significantly lower (p = 0.03) in the patients with normal-tension glaucoma compared with the controls. Even after we adjusted the data for independent variables, the incidence of normal-tension glaucoma was significantly correlated with high serum total antioxidant levels (p = 0.03; odds ratio, 1.007; 95% confidence interval, 1.001-1.013) and low urinary 8-hydroxy-2'-deoxyguanosine/creatinine (p = 0.02; odds ratio 0.76; 95% confidence interval, 0.61-0.96). CONCLUSIONS Increased serum total antioxidant and decreased 8-hydroxy-2'-deoxyguanosine may reflect compensatory alterations in response to increased systemic oxidative stress in patients with normal-tension glaucoma.
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Affiliation(s)
- Kenya Yuki
- Department of Ophthalmology, Keio University School of Medicine, Shinanomachi, Shinjuku-ku, Tokyo, Japan.
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Yuki K, Shiba D, Ota Y, Ozeki N, Murat D, Tsubota K. A new method to prevent loss of mitomycin C soaked sponges under the conjunctiva during trabeculectomy. Br J Ophthalmol 2010; 94:1111-2. [PMID: 20530660 DOI: 10.1136/bjo.2009.168229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kawashima M, Kawakita T, Okada N, Ogawa Y, Murat D, Nakamura S, Nakashima H, Shimmura S, Shinmura K, Tsubota K. Calorie restriction: A new therapeutic intervention for age-related dry eye disease in rats. Biochem Biophys Res Commun 2010; 397:724-8. [PMID: 20537981 DOI: 10.1016/j.bbrc.2010.06.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Accepted: 06/04/2010] [Indexed: 01/31/2023]
Abstract
A decrease in lacrimal gland secretory function is closely related to aging and leads to an increased prevalence of dry eye syndrome. Since calorie restriction (CR) is considered to prevent functional decline of various organs due to aging, we hypothesized that CR could prevent age-related lacrimal dysfunction. Six-month-old male Fischer 344 rats were randomly divided into ad libitum (AL) and CR (-35%) groups. After 6months of CR, tear function was examined under conscious state. After euthanasia, lacrimal glands were subjected to histological examination, tear protein secretion stimulation test with Carbachol, and assessment of oxidative stress with 8-hydroxy-2 deoxyguanosine (8-OHdG) and 4-hydroxynonenal (HNE) antibodies. CR significantly improved tear volume and tended to increase tear protein secretion volume after stimulation with Carbachol compared to AL. The acinar unit density was significantly higher in the CR rats compared to AL rats. Lacrimal glands in the CR rats showed a lesser degree of interstitial fibrosis. CR reduced the concentration of 8-OHdG and the extent of staining with HNE in the lacrimal gland, compared to AL. Furthermore, our electron microscopic observations showed that mitochondrial structure of the lacrimal gland obtained from the middle-aged CR rats was preserved in comparison to the AL rats. Collectively, these results demonstrate for the first time that CR may attenuate oxidative stress related damage in the lacrimal gland with preservation of lacrimal gland functions. Although molecular mechanism(s) by which CR maintains lacrimal gland function remains to be resolved, CR might provide a novel therapeutic strategy for treating dry eye syndrome.
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Affiliation(s)
- Motoko Kawashima
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
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Okumura Y, Yamaguchi T, Shiba D, Murat D, Kawamura R, Toda I, Tsubota K, Negishi K. Pupillary Block Glaucoma After Implantation of Iris-Fixated Phakic Intraocular Lens. Ophthalmic Surg Lasers Imaging Retina 2010; 41:1-3. [PMID: 20337283 DOI: 10.3928/15428877-20100215-90] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2009] [Indexed: 02/28/2024]
Abstract
To report a case of pupillary block glaucoma after implantation of iris-fixated phakic intraocular lens (IF pIOL). A 43-year-old man was referred for pupillary block one day after implantation of IF pIOL. Slit-lamp examination revealed extremely shallow anterior chamber, closure of peripheral laser iridotomy and contact of iris on the peripheral of the optics of IF pIOL. The intraocular pressure (IOP) was 62 mm Hg. The iris moved forward in contact with the IF pIOL and the lens remained in the physiologic position, which made the distance between the lens and the iris wide. He underwent an uneventful peripheral surgical iridectomy and the IOP decreased to 6 mm Hg. Acute pupillary block glaucoma can occur after IF pIOL implantation due to the occlusion of aqueous flow between the IF pIOL and the iris if the peripheral iridotomy closes.
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Yuki K, Murat D, Kimura I, Ohtake Y, Tsubota K. Reduced-serum vitamin C and increased uric acid levels in normal-tension glaucoma. Graefes Arch Clin Exp Ophthalmol 2009; 248:243-8. [PMID: 19763599 DOI: 10.1007/s00417-009-1183-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2009] [Revised: 08/09/2009] [Accepted: 08/20/2009] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Vitamin A, B(9), C, E, and uric acid are well-known antioxidants and may prevent age-related eye disorders. The aim of the present study was to investigate the levels of antioxidant vitamins, A, B(9), C, E, and antioxidative substance, uric acid in the serum of Japanese patients with normal-tension glaucoma and compare the results with normal controls. METHODS All subjects with suspicion of primary open-angle glaucoma who came to the glaucoma subspeciality clinic of Keio University Hospital were enrolled in this study. Sixty patients (28 males, 32 females; mean age +/- standard deviation: 59.9 +/- 9.8 years) with newly diagnosed primary open-angle glaucoma patients were consecutively enrolled in this study. After the diagnosis of primary open-angle glaucoma, the patients underwent 24-h IOP measurements. Forty-seven newly diagnosed consecutive normal-tension glaucoma patients (18 males, 29 females; mean age +/- standard deviation: 59.5 +/- 10.2 years) were enrolled in this study. The control subjects were recruited from subjects who came to the clinic for annual refractive check-up. The 44 consecutive control subjects of the current study, (16 males, 28 females; 62.7 +/- 14.8 years) did not have any ocular diseases. The serum levels of vitamins A, B(9), C, E, and uric acid were measured. The values were compared between the normal-tension glaucoma and control groups by the Mann-Whitney U test. RESULTS Serum levels of vitamin C were significantly lower in normal-tension glaucoma patients than in normal healthy controls (P = 0.04; normal-tension glaucoma; 4.6 +/- 4.0 microg/ml control; 6.3 +/- 3.9 microg/ml). Uric acid level was significantly higher in normal-tension glaucoma patients than in controls (P = 0.01; normal-tension glaucoma; 5.8 +/- 1.5 mg/dl control; 4.9 +/- 1.4 mg/dl). No statistically significant difference was seen in vitamin A (P = 0.41; normal-tension glaucoma; 82.1 +/- 26.7 microg/dl control; 77.1 +/- 30.1 microg/dl), B(9) (P = 0.37; normal-tension glaucoma; 8.7 +/- 4.3 ng/ml control; 8.0 +/- 3.1 ng/ml)and E (P = 0.83; normal-tension glaucoma; 1.5 +/- 0.6 control; 1.5 +/- 0.6) levels between normal-tension glaucoma and control groups. CONCLUSION Normal-tension glaucoma patients had lower serum levels of vitamin C and increased levels of uric acid. These observations may pave the way for possible alternative treatment for normal-tension glaucoma.
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Affiliation(s)
- Kenya Yuki
- Department of Ophthalmology, Keio University School of Medicine, Shinanomachi 35 Shinjuku-ku, Tokyo, Japan.
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Yamaguchi T, Negishi K, Yamaguchi K, Murat D, Uchino Y, Shimmura S, Tsubota K. Effect of anterior and posterior corneal surface irregularity on vision after Descemet-stripping endothelial keratoplasty. J Cataract Refract Surg 2009; 35:688-94. [DOI: 10.1016/j.jcrs.2008.11.062] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2008] [Revised: 11/25/2008] [Accepted: 11/26/2008] [Indexed: 11/17/2022]
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16
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Murat D. [Private welfare institutions in Gard in 1881]. Rev Soc Fr Hist Hop 2002:25-8. [PMID: 11922045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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17
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Dufour J, Murat D, Dufour X, Foos J. Experimental Observation of Nuclear Reactions in Palladium and Uranium—Possible Explanation by Hydrex Mode. Fusion Science and Technology 2001. [DOI: 10.13182/fst01-a184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J. Dufour
- Conservatoire National des Arts et Métiers, Laboratoire des Sciences Nucléaires, 2 rue Conté, 75003 Paris, France
| | - D. Murat
- Conservatoire National des Arts et Métiers, Laboratoire des Sciences Nucléaires, 2 rue Conté, 75003 Paris, France
| | - X. Dufour
- Conservatoire National des Arts et Métiers, Laboratoire des Sciences Nucléaires, 2 rue Conté, 75003 Paris, France
| | - J. Foos
- Conservatoire National des Arts et Métiers, Laboratoire des Sciences Nucléaires, 2 rue Conté, 75003 Paris, France
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18
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Affiliation(s)
- G Adil
- Gulhane Military Medical Academy, Department of Urology, Etlik, Ankara, Turkey
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