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Arakawa Y, Tano Y, Fujii M, Imai Y, Norimatsu Y, Yasukawa M, Watanabe M, Yamada T. The H3K9 demethylase plant homeodomain finger protein 2 regulates interleukin 4 production in CD4 + T cells. Cytokine 2024; 175:156506. [PMID: 38241965 DOI: 10.1016/j.cyto.2024.156506] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/04/2024] [Accepted: 01/12/2024] [Indexed: 01/21/2024]
Abstract
CD4+ T cells play a key role in the immune response via their differentiation into various helper T cell subsets that produce characteristic cytokines. Epigenetic changes in CD4+ T cells are responsible for cytokine production in these subsets, although the exact molecular mechanisms remain unclear. Therefore, we investigated the effects of plant homeodomain finger protein 2 (PHF2), a histone H3K9 demethylase, on cytokine production in CD4+ T cells using T cell-specific Phf2-conditional knockout (cKO) mice in this study. we showed that interleukin 4 (Il4) expression was significantly decreased in Phf2-cKO CD4+ T cells compared to that in wild-type cells. To further elucidate the role of PHF2 in vivo, we assessed immune responses in a mouse model of ovalbumin (OVA)-induced atopic dermatitis. Phf2-cKO mice exhibited lower serum levels of OVA-specific IgE than those in wild-type mice. These findings suggest that PHF2 plays a role in promoting T helper 2 cell (Th2) function and may contribute to the pathogenesis of Th2-related allergies such as atopic dermatitis. This study demonstrated the impact of PHF2 on cytokine production in CD4+ T cells for the first time. Further studies on the PHF2-mediated epigenetic mechanisms may lead to the development of treatments for a variety of immune diseases.
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Affiliation(s)
- Yuya Arakawa
- Department of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Iyo-gun, Ehime, Japan; Department of Clinical Laboratory and Biomedical Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuzuki Tano
- Department of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Iyo-gun, Ehime, Japan
| | - Moe Fujii
- Department of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Iyo-gun, Ehime, Japan
| | - Yuuki Imai
- Department of Pathophysiology, Graduate School of Medicine, Ehime University, Toon, Ehime, Japan
| | - Yoshiaki Norimatsu
- Department of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Iyo-gun, Ehime, Japan
| | - Masaki Yasukawa
- Department of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Iyo-gun, Ehime, Japan
| | - Mikio Watanabe
- Department of Clinical Laboratory and Biomedical Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takeshi Yamada
- Department of Medical Technology, Faculty of Health Sciences, Ehime Prefectural University of Health Sciences, Iyo-gun, Ehime, Japan.
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Akesse EN, Ouali-N'Doran SWM, Tano Y. Insectes ravageurs du piment Capsicum chinense Jacq. (Solanaceae) à Port-Bouët (Abidjan-Côte d’Ivoire) : Pratiques de lutte par les pesticides chimiques. ACTA ACUST UNITED AC 2015. [DOI: 10.4314/jab.v93i1.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Diabaté D, Gnago JA, Koffi K, Tano Y. The effect of pesticides and aqueous extracts of Azadirachta indica (A. Juss) and Jatropha carcus L. on Bemisia tabaci (Gennadius) (Homoptera: Aleyrididae) and Helicoverpa armigera (Hübner)(Lepidoptera: Noctuidae) found on tomato plants in Côte d’Ivoire. ACTA ACUST UNITED AC 2014. [DOI: 10.4314/jab.v80i1.14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Oie Y, Hayashi R, Takagi R, Yamato M, Takayanagi H, Tano Y, Nishida K. A novel method of culturing human oral mucosal epithelial cell sheet using post-mitotic human dermal fibroblast feeder cells and modified keratinocyte culture medium for ocular surface reconstruction. Br J Ophthalmol 2010; 94:1244-50. [DOI: 10.1136/bjo.2009.175042] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Sayanagi K, Ikuno Y, Soga K, Wakabayashi T, Tsujikawa M, Tano Y. Choroidal vascular hypofluorescence in indocyanine green angiography of high myopia. Br J Ophthalmol 2009; 93:1687-90. [DOI: 10.1136/bjo.2008.148718] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hashida N, Ohguro N, Morimoto Y, Oiki E, Morisaki H, Morisaki T, Tano Y. Ultrastructural appearance of iris flocculi associated with a thoracic aortic aneurysm and dissections. Br J Ophthalmol 2009; 93:1409-10. [DOI: 10.1136/bjo.2009.158998] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mitchell P, Korobelnik JF, Lanzetta P, Holz FG, Prünte C, Schmidt-Erfurth U, Tano Y, Wolf S. Ranibizumab (Lucentis) in neovascular age-related macular degeneration: evidence from clinical trials. Br J Ophthalmol 2009; 94:2-13. [PMID: 19443462 DOI: 10.1136/bjo.2009.159160] [Citation(s) in RCA: 221] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Neovascular age-related macular degeneration (AMD) has a poor prognosis if left untreated, frequently resulting in legal blindness. Ranibizumab is approved for treating neovascular AMD. However, further guidance is needed to assist ophthalmologists in clinical practice to optimise treatment outcomes. METHODS An international retina expert panel assessed evidence available from prospective, multicentre studies evaluating different ranibizumab treatment schedules (ANCHOR, MARINA, PIER, SAILOR, SUSTAIN and EXCITE) and a literature search to generate evidence-based and consensus recommendations for treatment indication and assessment, retreatment and monitoring. RESULTS Ranibizumab is indicated for choroidal neovascular lesions with active disease, the clinical parameters of which are outlined. Treatment initiation with three consecutive monthly injections, followed by continued monthly injections, has provided the best visual-acuity outcomes in pivotal clinical trials. If continued monthly injections are not feasible after initiation, a flexible strategy appears viable, with monthly monitoring of lesion activity recommended. Initiation regimens of fewer than three injections have not been assessed. Continuous careful monitoring with flexible retreatment may help avoid vision loss recurring. Standardised biomarkers need to be determined. CONCLUSION Evidence-based guidelines will help to optimise treatment outcomes with ranibizumab in neovascular AMD.
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Affiliation(s)
- P Mitchell
- Eye Clinic (B4A), Westmead Hospital, Hawkesbury Road, Westmead, NSW, 2145, Australia.
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Kanayama S, Nishida K, Yamato M, Hayashi R, Maeda N, Okano T, Tano Y. Analysis of soluble vascular endothelial growth factor receptor-1 secreted from cultured corneal and oral mucosal epithelial cell sheets in vitro. Br J Ophthalmol 2009; 93:263-7. [PMID: 19174402 DOI: 10.1136/bjo.2008.141580] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND In clinical trials, eyes transplanted with cultured oral mucosal epithelial cell sheets have shown increased neovascularisation compared with eyes treated with cultured corneal epithelial cell sheets. As reported recently, soluble vascular endothelial growth factor receptor-1 (soluble VEGFr-1) is a main factor to maintain a corneal avascularity. AIM To investigate soluble VEGFr-1 of cultured corneal epithelial cells (CCE) and cultured oral mucosal epithelial cells (COE) in vitro. METHODS Rabbit corneal and oral mucosal epithelial cells were co-cultured with mitomycin C-treated NIH/3T3 cells on culture plates. After CCE and COE were multilayered, culture medium was replaced by basal medium and incubated. Protein secretion of soluble VEGFr-1 was assessed in conditioned medium from CCE and COE by ELISA. Angiogenic potential was examined by invasion, migration assays with human umbilical vein endothelial cells (HUVECs) in addition to recombinant soluble VEGFr-1. RESULTS CCE secreted a significantly higher amount of soluble VEGFr-1 than did COE. Recombinant soluble VEGFr-1 significantly suppressed HUVEC migration induced by COE, without suppression in CCE. In conclusion, these findings suggest that low protein levels of soluble VEGFr-1 may lead to corneal neovascularisation after COE sheet transplantation.
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Affiliation(s)
- S Kanayama
- Department of Ophthalmology, University of Washington Medical Center, 1959 NE Pacific Street, Seattle, WA 98195, USA.
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Tokuda T, Asano R, Hiyama K, Terasawa Y, Nishida K, Kitaguchi Y, Fujikado T, Tano Y, Ohta J. Multi-finger structure and pulsed-powering operation scheme for CMOS LSI-based flexible stimulator for retinal prosthesis. Annu Int Conf IEEE Eng Med Biol Soc 2009; 2008:4212-5. [PMID: 19163641 DOI: 10.1109/iembs.2008.4650138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Multi-finger structure was proposed to improve flexibility of the CMOS LSI-based multi-chip retinal stimulator. A dual-finger retinal stimulator was fabricated and its functionality was demonstrated in retinal stimulation experiments on rabbit's retina, We also proposed an idea of pulsed-powering operation scheme for the multi-chip flexible retinal stimulator. We compared the pulsed-powering scheme with conventional one in a simulation, and show that the pulsed-powering can be an alternative operation scheme for the neural stimulator that provides an improved safety to the biological tissue.
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Affiliation(s)
- T Tokuda
- Nara Institute Science and Technology, Takayama-cho 8916-5, Ikoma 630-0192, Japan.
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Tokuda T, Takeuchi Y, Noda T, Sasagawa K, Nishida K, Kitaguchi Y, Fujikado T, Tano Y, Ohta J. Light-controlled retinal stimulation on rabbit using CMOS-based flexible multi-chip stimulator. Annu Int Conf IEEE Eng Med Biol Soc 2009; 2009:646-649. [PMID: 19964235 DOI: 10.1109/iembs.2009.5333809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We implemented a light-sensing function on CMOS-based multi-chip stimulator for retinal prosthesis. Using the light-sensing circuitry attached to each stimulation electrode, the flexible multi-chip stimulator is capable of image-based patterned stimulation. We verified the function of the light-controlled decision based on the light intensity measured just beside the stimulation site. We also experimentally demonstrated in vivo retinal stimulation on rabbit's retina with light-controlled decision. The result of the present work is a simplified demonstration for the concept of retinal prosthesis with on-site imaging.
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Affiliation(s)
- T Tokuda
- Nara Institute Science and Technology, Takayama-cho 8916-5, Ikoma, Nara, 630-0192, Japan.
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Sato T, Kusaka S, Hashida N, Saishin Y, Fujikado T, Tano Y. Comprehensive gene-expression profile in murine oxygen-induced retinopathy. Br J Ophthalmol 2009; 93:96-103. [DOI: 10.1136/bjo.2008.142646] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Saito T, Nishida K, Nakayama J, Akama TO, Fukuda MN, Watanabe K, Quantock AJ, Maeda N, Watanabe H, Tano Y. Sulfation patterns of keratan sulfate in different macular corneal dystrophy immunophenotypes using three different probes. Br J Ophthalmol 2008; 92:1434-6. [PMID: 18815430 DOI: 10.1136/bjo.2008.139527] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Miki A, Oshima Y, Otori Y, Kamei M, Tano Y. Efficacy of intravitreal bevacizumab as adjunctive treatment with pars plana vitrectomy, endolaser photocoagulation, and trabeculectomy for neovascular glaucoma. Br J Ophthalmol 2008; 92:1431-3. [DOI: 10.1136/bjo.2007.129833] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hori Y, Nishida K, Yamato M, Sugiyama H, Soma T, Inoue T, Maeda N, Okano T, Tano Y. Differential expression of MUC16 in human oral mucosal epithelium and cultivated epithelial sheets. Exp Eye Res 2008; 87:191-6. [DOI: 10.1016/j.exer.2008.05.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2007] [Revised: 05/01/2008] [Accepted: 05/22/2008] [Indexed: 11/27/2022]
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Sawa M, Gomi F, Tsujikawa M, Ikuno Y, Sakaguchi H, Sayanagi K, Tano Y. Abnormal fundus autofluorescence patterns in myopic choroidal neovascularisation. Br J Ophthalmol 2008; 92:1236-40. [DOI: 10.1136/bjo.2008.138198] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wakabayashi T, Gomi F, Sawa M, Tsujikawa M, Tano Y. Marked vascular changes of polypoidal choroidal vasculopathy after photodynamic therapy. Br J Ophthalmol 2008; 92:936-40. [PMID: 18577645 DOI: 10.1136/bjo.2007.132357] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- T Wakabayashi
- Department of Ophthalmology, Osaka University Medical School, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
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Tokuda T, Asano R, Sugitani S, Terasawa Y, Nunoshita M, Nakauchi K, Fujikado T, Tano Y, Ohta J. In vivo stimulation on rabbit retina using CMOS LSI-based multi-chip flexible stimulator for retinal prosthesis. ACTA ACUST UNITED AC 2008; 2007:5791-4. [PMID: 18003329 DOI: 10.1109/iembs.2007.4353663] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We have performed in vivo electric stimulation experiments on rabbit retina to demonstrate feasibility of CMOS LSI-based multi-chip flexible neural stimulator for retinal prosthesis. We have developed new packaging structure with an improved flexibility and device control system which totally controls the LSI-based multi-chip stimulator, counter electrode, and stimulation generator. We have implanted the fabricated multi-chip stimulator into sclera pocket for STS (Suprachoroidal Transretinal Stimulation) configuration. We successfully obtained EEP (Electrically Evoked Potential) on visual cortex evoked by the multi-chip stimulator.
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Affiliation(s)
- T Tokuda
- Nara Institute Science and Technology, Takayama-cho 8916-5, Ikoma, Nara, 630-0192, JAPAN.
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Saito T, Nishida K, Sugiyama H, Yamato M, Maeda N, Okano T, Tano Y. Abnormal keratocytes and stromal inflammation in chronic phase of severe ocular surface diseases with stem cell deficiency. Br J Ophthalmol 2008; 92:404-10. [DOI: 10.1136/bjo.2007.127738] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
AIMS The aim of the study was to assess the short-term efficacy of intravitreal injections of bevacizumab for polypoidal choroidal vasculopathy (PCV). METHODS Intravitreal bevacizumab (1 mg) was injected into 11 eyes of 11 patients with PCV in this retrospective, interventional case series. The main outcome measure was the change in the polypoidal vessels on indocyanine green angiography (IA) 3 months after injection. The foveal height determined by optical coherence tomography and the best-corrected visual acuity (BCVA) also were evaluated before and after treatment. RESULTS At baseline, subretinal fluid was observed in five eyes and a pigment epithelial detachment in eight eyes. The foveal height 1 month after injection decreased significantly (p = 0.023), but at 3 months, no significant decrease was observed, although an additional injection was administrated in five of 11 eyes. The IA at 3 months showed resolution of polyps in one eye but residual or enlarged lesions in the other ten eyes. The BCVA did not improve significantly, although the subjects had relatively good BCVA at baseline (mean 0.45). CONCLUSION Intravitreal injection of bevacizumab may reduce the fluid from PCV but seems to be ineffective for diminishing its choroidal vascular changes.
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Affiliation(s)
- F Gomi
- Department of Ophthalmology, Osaka University Medical School, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan.
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Kawasaki R, Tielsch JM, Wang JJ, Wong TY, Mitchell P, Tano Y, Tominaga M, Oizumi T, Daimon M, Kato T, Kawata S, Kayama T, Yamashita H. The metabolic syndrome and retinal microvascular signs in a Japanese population: the Funagata study. Br J Ophthalmol 2007; 92:161-6. [PMID: 17965107 DOI: 10.1136/bjo.2007.127449] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AIMS To determine the relationship of metabolic syndrome and its components with retinopathy and other retinal microvascular signs in a Japanese population. METHODS The Funagata study recruited 1961 (53.3% of eligible) Japanese aged 35 or older. The metabolic syndrome was diagnosed primarily using definitions of the International Diabetes Federation. Retinopathy and retinal microvascular signs were assessed from fundus photographs. Retinal arteriolar and venular diameters were measured using a computer-assisted programme. RESULTS Data were available for analysis in 1638 persons for retinopathy and retinal microvascular signs and 921 persons for retinal vessel diameters. Various components of the metabolic syndrome were associated with retinal microvascular signs: a larger waist circumference was associated with wider venular diameter and retinopathy lesions; a higher blood pressure level was associated with focal arteriolar narrowing, arteriovenous nicking, enhanced arteriolar wall reflex and narrower arteriolar diameter; and a higher triglyceride level was associated with enhanced arteriolar wall reflex. Overall, persons with the metabolic syndrome were more likely to have retinopathy (odds ratio 1.64, 95% CI: 1.02 to 2.64) and wider venular diameter 4.69 microm (95% CI: 1.20 to 8.19 microm) than persons without the metabolic syndrome. CONCLUSION We report associations of metabolic syndrome components with retinopathy and wider venular diameter in Japanese adults. These data suggest that metabolic abnormalities, indicated by metabolic syndrome components, are associated with microvascular changes in the retina. There was no synergistic effect of the metabolic syndrome on retinal microvascular changes beyond its individual components.
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Affiliation(s)
- R Kawasaki
- Department of Ophthalmology and Visual Science, Yamagata University Faculty of Medicine, Yamagata, Japan.
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Ohta J, Tokuda T, Kagawa K, Sugitani S, Taniyama M, Uehara A, Terasawa Y, Nakauchi K, Fujikado T, Tano Y. Laboratory investigation of microelectronics-based stimulators for large-scale suprachoroidal transretinal stimulation (STS). J Neural Eng 2007; 4:S85-91. [PMID: 17325420 DOI: 10.1088/1741-2560/4/1/s10] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [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: 11/12/2022]
Abstract
This paper describes the technological developments underlying the realization of a reliable and reproducible microchip-based stimulator with a large number of stimulus electrodes. A microchip-based stimulator with over 500 electrodes for suprachoroidal transretinal stimulation (STS) is proposed in this paper, and an example is presented. To enhance reliability and reproducibility for such a large array, we introduce a flip-chip bonding technique and place microchips on the reverse side of a substrate. A square microchip of size 600 microm was fabricated using 0.35 microm standard CMOS process technology. Twelve microchips were flip-chip bonded on a polyimide substrate through Au bumps. To evaluate the feasibility of the proposed device, we successfully fabricated a stimulator with 12 microchips and 118 electrodes made of Pt/Au bumps, and demonstrated their operation in a saline solution for 2 weeks. Also, to evaluate the device operation in vivo, a stimulator with one active IrO(x) electrode was implanted into the scleral pocket of a rabbit and electrical evoked potential (EEP) signals with a threshold of 100 microA were obtained. We also fabricated a simulator with 64 microchips that has 576 electrodes (9 electrodes in a microchip times 64 microchips).
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Affiliation(s)
- J Ohta
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0101, Japan.
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Oshima Y, Ohji M, Tano Y. Pars plana vitrectomy with peripheral retinotomy after injection of preoperative intravitreal tissue plasminogen activator: a modified procedure to drain massive subretinal haemorrhage. Br J Ophthalmol 2006; 91:193-8. [PMID: 16916872 PMCID: PMC1857597 DOI: 10.1136/bjo.2006.101444] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [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: 11/04/2022]
Abstract
AIMS To report outcome of a modified procedure for draining massive subretinal haemorrhages (SRHs). METHODS The charts of eight consecutive eyes from eight patients with massive SRHs extending to the periphery and involving two or more quadrants with haemorrhagic and bullous retinal detachment were reviewed. Tissue plasminogen activator (tPA) was injected intravitreally 12-24 h preoperatively; vitrectomy was carried out with peripheral retinotomy, drainage of the SRH from the retinotomy using perfluorocarbon liquid and gas tamponade with prone positioning postoperatively. RESULTS The preoperative visual acuities ranged from light perception to 20/200. Most of the subretinal haematomas moved postoperatively to the vitreous cavity through the peripheral retinotomy using perfluorocarbon liquid. Residual SRHs were drained from the anterior chamber at the bedside after prone positioning overnight. SRH recurred in one eye 14 months postoperatively and was successfully retreated. No other serious complications developed. The final visual acuity improved in seven eyes (range 20/1000-20/60). Polypoidal lesions in choroidal vasculatures were present in three of seven patients. CONCLUSIONS The technique seems safe and effective for treating massive SRH. However, visual recovery is limited by the underlying macular pathology. Polypoidal choroidal vasculopathy, other than age-related macular degeneration, may be another cause of massive SRHs.
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Affiliation(s)
- Y Oshima
- Department of Ophthalmology, Osaka University Medical School, 2-2 Yamadaoka (Rm. E7), Suita, Osaka 565-0871, Japan.
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Sakaguchi H, Ikuno Y, Gomi F, Kamei M, Sawa M, Tsujikawa M, Oshima Y, Kusaka S, Tano Y. Intravitreal injection of bevacizumab for choroidal neovascularisation associated with pathological myopia. Br J Ophthalmol 2006; 91:161-5. [PMID: 16914470 PMCID: PMC1857602 DOI: 10.1136/bjo.2006.099887] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.6] [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: 02/03/2023]
Abstract
AIM To assess the efficacy and safety of an intravitreal injection of bevacizumab (Avastin(R)) for myopic choroidal neovascularisation (mCNV). METHODS Intravitreal bevacizumab (1 mg) was injected into eight eyes of eight patients with mCNV in this non-randomised, interventional case series. The best-corrected visual acuity (BCVA) was measured and the optical coherence tomography (OCT) and fluorescein angiography findings were examined before and after treatment. The minimum follow-up time was 3 months. RESULTS The mean BCVA was 0.26 before treatment and 0.51 at the last visit (p = 0.009). The BCVA improved to two or more lines in six eyes (75%) and remained the same in two eyes (25%). Leakage from the mCNV on fluorescein angiography decreased in seven eyes (87.5%). The choroidal neovascularisation area on fluorescein angiography (p = 0.049) and the foveal thickness on OCT images decreased significantly (p = 0.027) after the treatment. No major complications developed. CONCLUSION Intravitreal injection of bevacizumab seems to be an effective and safe treatment for mCNV.
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Affiliation(s)
- H Sakaguchi
- Department of Ophthalmology, Osaka University Medical School, 2-2 Yamadaoka, E7, Suita, Osaka 565-0871, Japan
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Sayanagi K, Ikuno Y, Tano Y. Spontaneous resolution of retinoschisis and consequent development of retinal detachment in highly myopic eye. Br J Ophthalmol 2006; 90:652-3. [PMID: 16622102 PMCID: PMC1857050 DOI: 10.1136/bjo.2005.085233] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Simizu B, Abe S, Yamamoto H, Tano Y, Ota Y, Miyazawa M, Horie H, Satoh K, Wakabayashi K. Development of inactivated poliovirus vaccine derived from Sabin strains. Biologicals 2006; 34:151-4. [PMID: 16679028 DOI: 10.1016/j.biologicals.2006.02.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [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] Open
Abstract
In the course of Sabin-inactivated poliovirus vaccine (S-IPV) development, we have established high-yield virus production techniques based on Vero cell micro-carrier cultures. Development of specific ELISA tests to quantify the antigen content of S-IPV has been achieved. To adjust the immunogenicity of S-IPV so as to be comparable with the conventional-IPV, a new formulation was determined using a potency test using rats. The reformulated S-IPV was shown to be efficacious for the immunization of monkeys.
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Affiliation(s)
- B Simizu
- Japan Poliomyelitis Research Institute, 5-34-4, Kumegawa-cho, Higashi-murayama, Tokyo 189-0003, Japan
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Abstract
Choroidal neovascularisation (CNV) secondary to pathological myopia is an important cause of significant visual impairment in young and middle aged adults globally and is particularly prevalent in Asian populations. In the past few years, there have been rapid advancements in the different treatments for myopic CNV. The purpose of this perspective is to give an overview of the natural history of myopic CNV and the various treatment options including laser photocoagulation, photodynamic therapy, sub-macular surgery, and macular translocation surgery. Future directions in the management of myopic CNV are also discussed.
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Affiliation(s)
- W-M Chan
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, 3/F, Hong Kong Eye Hospital, Kowloon, Hong Kong.
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Koudou BG, Tano Y, Doumbia M, Nsanzabana C, Cissé G, Girardin O, Dao D, N'Goran EK, Vounatsou P, Bordmann G, Keiser J, Tanner M, Utzinger J. Malaria transmission dynamics in central Côte d'Ivoire: the influence of changing patterns of irrigated rice agriculture. Med Vet Entomol 2005; 19:27-37. [PMID: 15752174 DOI: 10.1111/j.0269-283x.2005.00530.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The dynamics of malaria transmission was studied comparatively in the villages of Zatta and Tiemelekro, central Cote d'Ivoire, from February 2002 to August 2003. Prominent agroecosystems in these villages are irrigated rice growing and vegetable farming, respectively. Mosquitoes (Diptera: Culicidae) were collected on human bait at night and by pyrethrum knock-down spray sheet collections at four randomly selected sentinel sites in each village. In 2002, for a total of 96 man-nights per village, 7716 mosquitoes were collected in Zatta and 3308 in Tiemelekro. In 2003, with half the sampling effort, 859 and 2056 mosquitoes were collected in Zatta and Tiemelekro, respectively. Anopheles gambiae Giles s.l. was the predominant mosquito and the key malaria vector throughout, followed by An. funestus Giles. Anthropophily among adult female Anopheles exceeded 95% in both villages. Comparison between years revealed that the biting rate of An. gambiae s.l. in Zatta decreased several-fold from 49.3 bites per person per night (b/p/n) in 2002 to 7.9 b/p/n in 2003 (likelihood ratio test (LRT) = 1072.66; P < 0.001). Although the biting rate remained fairly constant in Tiemelekro, the difference between years was significant (16.1 vs. 18.2 b/p/n; LRT = 148.06; P < 0.001). These observations were paralleled by a marked decrease in the infective rate of An. gambiae s.l. in Zatta (4.6-1.2%), and an increase in Tiemelekro (3.1-7.6%). Meanwhile, the entomological inoculation rate of An. gambiae s.l. decreased 21-fold in Zatta, from 789 to 38 infective bites per person per year (ib/p/y), whereas it remained high in Tiemelekro (233 vs. 342 ib/p/y). The interruption of irrigated rice growing in Zatta in 2003, consequential to a farmers' conflict over land, might be the underlying cause for the significant reduction in malaria transmission, whereas more stable conditions occurred in Tiemelekro.
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Affiliation(s)
- B G Koudou
- Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire, Switzerland
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Abstract
AIM To determine the frequency and clinical characteristics of retinal arterial macroaneurysms in patients with uveitis. METHODS A retrospective review of the clinical, photographic, and angiographic records of 1007 patients with uveitis, examined at the Osaka University Hospital uveitis clinic between January 1995 and April 2002, was performed. All of the records were examined to determine whether macroaneurysms were present, and when present, to determine the laterality, type, location, clinical course, and the presence of associated systemic and ocular diseases. RESULTS Of the 1007 patients with uveitis, only 14 (1.4%) had macroaneurysms. 12 of these 14 patients had peripheral multifocal chorioretinitis (PMC), and five of these 12 were diagnosed with sarcoidosis and the other seven without sarcoidosis. There was only one case with sarcoidosis without PMC, and the remaining case was uveitis of unknown origin. There were 18 macroaneurysms in all cases and 17 (94.4%) were the exudative type, and the remaining one was the haemorrhagic type. Two patients had been treated for systemic hypertension but the others had no signs of systemic hypertension or cardiovascular disease. CONCLUSIONS Macroaneurysms are not characteristically found in patients with uveitis, but the majority are found in patients with PMC. The majority of the macroaneurysms were the exudative type, and the conclusion is that patients with PMC should be carefully examined for exudative macroaneurysms.
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Affiliation(s)
- E Yamanaka
- Department of Ophthalmology, Osaka University Medical School, Yamadaoka, Suita, Osaka, 565-0871, Japan
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30
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Sawa M, Awazu K, Takahashi T, Sakaguchi H, Horiike H, Ohji M, Tano Y. Application of femtosecond ultrashort pulse laser to photodynamic therapy mediated by indocyanine green. Br J Ophthalmol 2004; 88:826-31. [PMID: 15148220 PMCID: PMC1772167 DOI: 10.1136/bjo.2003.031047] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [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: 11/04/2022]
Abstract
BACKGROUND/AIMS To evaluate treatment with high peak power pulse energy by femtosecond ultrashort pulse laser (titanium sapphire laser) delivered at an 800 nm wavelength for corneal neovascularisation using photodynamic therapy (PDT) mediated by indocyanine green (ICG). METHODS Using a gelatin solid as an in vitro corneal model, the safety of laser power was studied to determine if it degenerated gelatin with or without ICG. The authors then induced corneal neovascularisation in rabbit eyes by an intracorneal suturing technique. Fluorescein angiography was used to evaluate occlusion before PDT and 0, 1, 3, and 10 days after PDT. The authors performed light microscopy with haematoxylin eosin staining and transmission electron microscopy to determine thrombosis formation in the neovascular regions. RESULTS The threshold of peak laser power density ranged from 39 to 53 W/cm(2). Laser irradiation was started 30 seconds after a 10 mg/kg ICG injection, and all irradiated segments were occluded at 0, 1, 3, and 10 days at 3.8 J/cm(2). Light and electron microscopy documented thrombosis formation in the neovascular region. CONCLUSION Femtosecond pulse laser enhanced by ICG can be used for PDT. Because of effective closure of corneal neovascularisation at a low energy level, the high peak power pulse energy of the femtosecond pulse laser might be more efficacious than continuous wave laser for use with PDT.
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Affiliation(s)
- M Sawa
- Department of Ophthalmology and Visual Science, Osaka University Graduate School of Medicine, Osaka, Japan.
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31
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Nakabayashi M, Morishita R, Nakagami H, Kuba K, Matsumoto K, Nakamura T, Tano Y, Kaneda Y. HGF/NK4 inhibited VEGF-induced angiogenesis in in vitro cultured endothelial cells and in vivo rabbit model. Diabetologia 2003; 46:115-23. [PMID: 12637990 DOI: 10.1007/s00125-002-0954-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2002] [Revised: 07/01/2002] [Indexed: 11/29/2022]
Abstract
AIMS/HYPOTHESIS As vascular endothelial growth factor (VEGF) plays a pivotal role in the development of diabetic retinopathy, inhibition of angiogenesis induced by VEGF is crucial to treat diabetic retinopathy. HGF (hepatocyte growth factor)/NK4, containing the N-terminal hairpin domain and the four subsequent kringle domains of HGF, is considered as a specific antagonist for HGF. Our aim was to explore the inhibitory effects of HGF/NK4 on angiogenesis induced by VEGF. METHODS To analyze the in vivo angiogenesis, we used rabbit corneal micropocket assay. Proliferation and migration of human endothelial cells, expression of ets-1, an essential transcription factor for angiogenesis, and the phosphorylation of extracellular signal-regulated kinase (ERK) was examined with or without HGF/NK4. RESULTS Using corneal micropocket assay, in vivo administration of HGF/NK4 inhibited angiogenesis induced by VEGF. HGF/NK4 inhibited proliferation and migration of human endothelial cells induced by VEGF in a dose-dependent manner. Interestingly, VEGF-mediated phosphorylation of ERK was significantly attenuated by HGF/NK4. Of importance, HGF/NK4 attenuated the increase in ets-1 protein stimulated by VEGF. Nevertheless, HGF/NK4 did not affect phosphorylation of VEGF receptor-2 [kinase domain region (KDR)/foetal liver kinase (Flk)-1]. Although tyrosine phosphatase inhibitor (Na(3)VO(4)), or okadaic acid, serine-threonin kinase inhibitor, did not prevent the inhibition of ERK phosphorylation by HGF/NK4, co-incubation of HGF/NK4 with VEGF significantly diminished mitogen-activated protein (MAP) ERK kinase (MEK) phosphorylation (p<0.01). CONCLUSIONS/INTERPRETATION Overall, HGF/NK4 inhibited angiogenesis induced by VEGF through inhibition of phosphorylation of ERK and ets-1 expression in in vitro cultured endothelial cells and in vivo rabbit model.
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Affiliation(s)
- M Nakabayashi
- Division of Gene Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan
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32
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Doi Y, Abe S, Yamamoto H, Horie H, Ohyama H, Satoh K, Tano Y, Ota Y, Miyazawa M, Wakabayashi K, Hashizume S. Progress with inactivated poliovirus vaccines derived from the Sabin strains. Dev Biol (Basel) 2002; 105:163-9. [PMID: 11763324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
To produce a safe and effective inactivated poliovirus vaccine (IPV), we have developed S-IPV using Vero cells infected with the Sabin strains in a semi-production scale. All production steps including virus culture on microcarrier beads were highly reproducible. Mean recovery percents of infectious viruses or D-antigens during all processes for concentration, purification and inactivation were 30-50% in the three types. The S-IPV potency was adjusted for D-antigen content as determined by in-house ELISA and was comparable to WHO reference IPV derived from the virulent strains in immunogenicity tests in rats. Antibody development in more than 30 seronegative infant volunteers after two shots of S-IPV at four-week interval were 100% without notable adverse reactions. The mean antibody titres (log2) to Sabin 1, 2 and 3 viruses were 11.1, 8.3 and 8.9, respectively. The antibodies neutralized the Mahoney, MEF-1, and Saukett virulent strains with slightly inferior titres to those of the Sabin strains. D-antigens for each type of S-IPV were stable at 4 degrees C without any significant decrease over more than two years.
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Affiliation(s)
- Y Doi
- Japan Poliomyelitis Research Institute, Tokyo
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33
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Sato S, Maeda N, Watanabe H, Tano Y, Inoue Y, Shimomura Y, Tanaka A. Multiple iridociliary cysts in patients with mucopolysaccharidoses. Br J Ophthalmol 2002; 86:933-4. [PMID: 12140222 PMCID: PMC1771251 DOI: 10.1136/bjo.86.8.933] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Affiliation(s)
- O Cekiç
- Department of Ophthalmology, Osaka University Medical School, Suita, Japan
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35
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Ohji M, Fujikado T, Kusaka S, Hayashi A, Hosohata J, Ikuno Y, Sawa M, Kubota A, Hashida N, Tano Y. Comparison of three techniques of foveal translocation in patients with subfoveal choroidal neovascularization resulting from age-related macular degeneration. Am J Ophthalmol 2001; 132:888-96. [PMID: 11730654 DOI: 10.1016/s0002-9394(01)01255-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [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: 11/19/2022]
Abstract
PURPOSE To report the results of three methods of foveal translocation in the presence of subfoveal choroidal neovascular membrane resulting from age-related macular degeneration. METHODS We treated 51 eyes of 51 consecutive patients with subfoveal choroidal neovascular membranes resulting from age-related macular degeneration with one of three techniques of foveal translocation surgery: foveal translocation with partial retinotomy (n = 6), limited translocation (n = 9), and translocation with 360-degree retinotomy (n = 36). All patients were followed for at least 6 months postoperatively. The size of the choroidal neovascular membrane and the amount of foveal displacement, the best-corrected visual acuity, and complications were recorded preoperatively and postoperatively. RESULTS The mean distance of the foveal translocation was greater in the 360-degree retinotomy group (3340 microm) than in the partial retinotomy (1060 microm, P <.001) and the limited translocation groups (1120 microm, P <.001). A final visual acuity of 20/200 or better was achieved in two eyes (33%) in the partial retinotomy group, seven eyes (78%) in the limited translocation group, and 23 eyes (64%) in the 360-degree retinotomy group. The final visual acuity improved by 0.2 logarithm of minimal angle of resolution (logMAR) unit or more in one eye (17%), one eye (11%), and seven eyes (19%), respectively. The final visual acuity was maintained within 1 line in zero eyes, five eyes (56%), and 19 eyes (53%), respectively. A retinal detachment developed postoperatively in five eyes (83%), zero eyes (0%), and 15 eyes (42%), respectively. CONCLUSIONS A significant number of patients improved or maintained best-corrected visual acuity after translocation with 360-degree retinotomy, and limited translocation, whereas translocation with 360-degree retinotomy is suitable for larger choroidal neovascular membranes because it resulted in the greatest foveal displacement among the three translocation procedures.
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Affiliation(s)
- M Ohji
- Department of Ophthalmology, Osaka University Medical School, 2-2 Yamadaoka, Suita, 565-0871, Japan.
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Cekiç O, Ohji M, Zheng Y, Tsujikawa M, Hayashi A, Tano Y. Importance of assessing functional fixation point in the treatment of recurrent subfoveal choroidal neovascularization secondary to age-related macular degeneration. Am J Ophthalmol 2001; 132:802-3. [PMID: 11704054 DOI: 10.1016/s0002-9394(01)01054-6] [Citation(s) in RCA: 2] [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: 11/15/2022]
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Abstract
PURPOSE To evaluate the peripheral visual field after foveal translocation with scleral imbrication or 360-degree retinotomy. METHODS Retrospective, single-center, nonrandomized study. We calculated the rate of preservation of the peripheral visual field using Goldmann perimetry by dividing the width of the postoperative V-4 isopter by the preoperative width and expressing the result as a percentage. RESULTS In nine eyes that underwent scleral imbrication, the rate of preservation was 100.0% superiorly, 102.6% superotemporally, 99.9% temporally, 97.9% inferotemporally, 96.9% inferiorly, 82.3% inferonasally, 93.7% nasally, and 87.3% superonasally. In 33 eyes that underwent 360-degree retinotomy, it was 89.1%, 87.0%, 81.9%, 78.1%, 86.6%, 90.0%, 89.9%, and 86.8%, respectively. CONCLUSION After foveal translocation with scleral imbrication, the peripheral visual field was preserved except for slight narrowing nasally; 360-degree retinotomy resulted in preservation of the visual field, except for slight narrowing in all meridians.
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Affiliation(s)
- A Kubota
- Department of Ophthalmology, Osaka University Medical School, 2-2 Yamadaoka, Suita 565-0871, Japan.
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Inoue T, Inoue Y, Kosaki R, Inoue Y, Nishida K, Shimomura Y, Tano Y, Hayashi K. Immunohistological study of infiltrated cells and cytokines in murine herpetic keratitis. Acta Ophthalmol Scand 2001; 79:484-7. [PMID: 11594984 DOI: 10.1034/j.1600-0420.2001.790511.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
PURPOSE To identify localization and kinetics of infiltrated cells and cytokines in murine herpetic keratitis. METHODS HSV-1 was inoculated onto the scarified BALB/c corneas. At given times post infection (PI), eyes were removed and studied immunohistochemically using monoclonal antibodies against several infiltrated cells and cytokines. RESULTS Neutrophils and NK cells infiltrated as early as 1 day PI reaching a maximum number at 2 day PI in initial stage. gamma delta TCR positive cells were observed in the corneal stroma from 1 day PI to 8 day PI. IL-2 and IFN-gamma were positive in the cell-infiltrated areas of the epithelial and stromal lesions, whereas IL-4 was negative throughout the experiment. CONCLUSION Our results indicated that cytokine profile upon herpes infection on the cornea is Th1 dominant. Together with neutrophils in the early phase of infection, gamma delta positive T cells may play an additional role in protecting the cornea against incoming pathogens.
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MESH Headings
- Animals
- Antigens, Viral/analysis
- Cell Movement
- Corneal Stroma/immunology
- Corneal Stroma/pathology
- Corneal Stroma/virology
- Disease Models, Animal
- Female
- Fluorescent Antibody Technique, Indirect
- Herpesvirus 1, Human/physiology
- Interferon-gamma/metabolism
- Interleukin-1/metabolism
- Keratitis, Herpetic/immunology
- Keratitis, Herpetic/pathology
- Keratitis, Herpetic/virology
- Killer Cells, Natural/immunology
- Mice
- Mice, Inbred BALB C
- Neutrophils/immunology
- Receptors, Antigen, T-Cell, gamma-delta/metabolism
- Th1 Cells/immunology
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Affiliation(s)
- T Inoue
- Department of Ophthalmology, Osaka University Medical School, Suita Osaka, Japan
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Abstract
PURPOSE Nuclear sclerosis develops frequently after successful pars plana vitrectomy. We evaluated changes in the degree of nuclear sclerosis after nonvitrectomizing vitreous surgery for idiopathic epimacular proliferation. METHODS Forty-one consecutive patients (41 eyes) underwent removal of idiopathic epimacular proliferation by nonvitrectomizing vitreous surgery and were followed postoperatively for at least 12 months. Visual acuity, refractive error, slit-lamp biomicroscopy, and Scheimpflug photographs were assessed preoperatively and postoperatively to evaluate changes in the degree of lenticular opacification. Quantitative analysis of the nuclear sclerosis was performed by densitometry with Scheimpflug photographs performed on only the last 21 patients. We evaluated these measurements by comparing statistically the preoperative and postoperative difference between both eyes (operative eye minus nonoperative ocular data). RESULTS There was no significant difference in the progression of nuclear sclerosis or degree of myopic shift between the operated and fellow eyes during postoperative follow-up (mean +/- SD, 22 +/- 8 months; median, 22 months; range, 12 to 48 months). The average preoperative and postoperative refractive errors in operated eyes were 0.0 +/- 2.4 diopters and 0.1 +/- 2.5 diopters, respectively; the average difference in the refractive errors between both eyes was -0.2 +/- 0.7 diopter preoperatively and -0.2 +/- 0.9 diopter postoperatively (P =.961, paired t test). The average preoperative and postoperative nuclear density values by Scheimpflug photography in 21 operated eyes were, respectively, 72 +/- 18 nuclear density units and 75 +/- 17 nuclear density units; the average difference in nuclear density values between both eyes was -1 +/- 4 nuclear density units preoperatively and 0 +/- 6 nuclear density units postoperatively (P =.631, paired t test). CONCLUSION Progression of nuclear sclerotic cataract based on changes in refractive error and Scheimpflug photography was not observed after nonvitrectomizing vitreous surgery.
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Affiliation(s)
- M Sawa
- Department of Ophthalmology, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Inoue T, Watanabe H, Yamamoto S, Inoue Y, Okada M, Hori Y, Maeda N, Inoue Y, Hayashi K, Shimomura Y, Tano Y. Different recurrence patterns after phototherapeutic keratectomy in the corneal dystrophy resulting from homozygous and heterozygous R124H BIG-H3 mutation. Am J Ophthalmol 2001; 132:255-7. [PMID: 11476689 DOI: 10.1016/s0002-9394(01)00824-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To report the recurrence pattern of corneal deposits after phototherapeutic keratectomy in patients with corneal dystrophies resulting from homozygous and heterozygous Arg124His (R124H) mutation of the BIG-H3 gene. METHODS Slit-lamp examination was performed on patients with corneal dystrophy resulting from a genetically confirmed BIG-H3 R124H mutation. RESULTS The recurrence of corneal deposits after phototherapeutic keratectomy in patient with heterozygous R124H mutation was mild; the granular opacities occurred as spot lesions in the central cornea. The patient with a homozygous mutation had a more severe pattern, and the recurrent lesions were diffuse and occurred in the periphery between the corneal epithelium and laser-ablated stroma. The recurrence-free interval in homozygous patients was shorter. CONCLUSION The mutation genotype of BIG-H3 gene determines the recurrence pattern after phototherapeutic keratectomy.
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Affiliation(s)
- T Inoue
- Department of Ophthalmology, Osaka University Medical School, Suita, Osaka, Japan
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41
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Inoue T, Inoue Y, Asari S, Sunada A, Inoue Y, Yamamoto S, Nishida K, Maeda N, Watanabe H, Shimomura Y, Tano Y. Utility of Etest in choosing appropriate agents to treat fungal keratitis. Cornea 2001; 20:607-9. [PMID: 11473161 DOI: 10.1097/00003226-200108000-00010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 11/26/2022]
Abstract
PURPOSE To evaluate the utility of Etest in choosing the appropriate treatment of fungal keratitis. METHODS Etest was used to determine the drug sensitivities of isolates from the eyes of three patients with fungal keratitis, and the clinical outcomes of treatment with selected drugs were evaluated. RESULTS In all cases, drug sensitivity demonstrated by Etest accorded with clinical efficacy of the drugs. CONCLUSION The results in these cases suggest that evaluating drug sensitivities with Etest is an efficient means of selecting optimal pharmacotherapy for fungal keratitis.
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Affiliation(s)
- T Inoue
- Department of Ophthalmology, Osaka University Medical School, Suita, Osaka, Japan.
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Watanabe H, Hashida Y, Tsujikawa K, Tsujikawa M, Maeda N, Inoue Y, Yamamoto S, Tano Y. Two patterns of opacity in corneal dystrophy caused by the homozygous BIG-H3 R124H mutation. Am J Ophthalmol 2001; 132:211-6. [PMID: 11476681 DOI: 10.1016/s0002-9394(01)00962-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To investigate the opacity pattern in corneas with an Arg124His (R124H) homozygous mutation of the BIG-H3 gene. METHODS Slit-lamp examination was performed on eight patients with corneal dystrophy resulting from a genetically confirmed BIG-H3 R124H homozygous mutation. The birthplace of each patient also was determined. RESULTS Slit-lamp examination disclosed two types of opacity patterns in corneas with the BIG-H3 R124H homozygous mutation. Type I (n = 4) is a spot-like opacity present in the anterior stroma in which the lesions are confluent. Type I is the same pattern that previous reports have shown to be caused by the BIG-H3 R124H homozygous mutation. The type II corneal opacity pattern (n = 4) is a reticular opacity in the anterior stroma with round translucent spaces. Type II opacity has not been reported previously in association with any corneal dystrophy. The patients with the type I opacity do not share a common birthplace; however, interestingly, the patients with the type II opacity traced their origin to Tottori prefecture in western Japan. CONCLUSION The BIG-H3 homozygous R124H mutation induces the development of two distinct patterns of corneal opacity, the recognition of which can establish an accurate diagnosis of corneal dystrophy caused by the homozygous BIG-H3 R124H mutation independent of genetic analysis. In addition, genetic factors or circumstantial influences other than the gene responsible for the corneal dystrophy may influence the pattern of corneal opacity.
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Affiliation(s)
- H Watanabe
- Department of Ophthalmology, Osaka University Medical School, Suita, Osaka, Japan.
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Inoue T, Maeda N, Sasaki K, Watanabe H, Inoue Y, Nishida K, Inoue Y, Yamamoto S, Shimomura Y, Tano Y. Factors that influence the surgical effects of astigmatic keratotomy after cataract surgery. Ophthalmology 2001; 108:1269-74. [PMID: 11425686 DOI: 10.1016/s0161-6420(01)00629-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [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: 11/15/2022] Open
Abstract
OBJECTIVE To determine the factors affecting the surgical effect of astigmatic keratotomy (AK) when against-the-rule astigmatism is present following cataract surgery. DESIGN Prospective interventional noncomparative case series. PARTICIPANTS Twenty eyes of 19 patients from four medical centers who had against-the-rule astigmatism following cataract surgery. INTERVENTION AK with a 6 mm optical zone, two linear 3-mm length incisions (T-cut) and a depth of 90% of the central thickness was performed on all subjects. MAIN OUTCOME MEASURES Vector analysis of astigmatic correction. Multiple regression analysis for seven covariates including age, spherical equivalent of the manifest refraction, preoperative astigmatism, corneal diameter, corneal thickness, mean radius of corneal curvature and axial misalignment. RESULTS Multiple regression analysis showed that the preoperative astigmatism (p = 0.014) and the axis deviation (p = 0.005) were significantly correlated with the surgical effects. CONCLUSIONS Even with a uniform surgical procedure, the surgical effects of AK in eyes with against-the-rule astigmatism can be affected by the amount of preoperative astigmatism and the intraoperative axis misalignment. Adding the amount of preoperative astigmatism to the nomogram and improvement of surgical procedures will be required to obtain better surgical predictability of AK following cataract surgery.
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Affiliation(s)
- T Inoue
- Department of Ophthalmology, Osaka University Medical School, Osaka, Japan
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Abstract
BACKGROUND Ligneous conjunctivitis is a rare condition characterized by chronic, recurrent conjunctivitis associated with pseudomembrane, and it may involve other mucous membranes in the mouth, nasopharynx, trachea, and vagina. We examined and treated a case of presumed ligneous conjunctivitis. CASE The patient was a 10-year-old boy. His chief complaints were visual impairment, discomfort, and discharge, but no itching in his eyes. His upper eyelids appeared thick without swelling. He had a past history of surgery for lid entropion. His two siblings had similar follicular conjunctivitis. OBSERVATIONS This case exhibited several characteristics of ligneous conjunctivitis, such as large follicles, recurrent pseudomembrane and normal level IgE in the serum. Indispensable characteristics of vernal keratoconjunctivitis, strong itching, and extensive papillary formation, were not found. In spite of the lack of woody hardness of the conjunctiva, other clinical findings led to the diagnosis of ligneous conjunctivitis. Definite histological diagnosis was not obtained, because of the lack of common histological characteristics among previously reported cases with ligneous conjunctivitis. The boy had developed corticosteroid glaucoma after instillation of dexamethasone 0.1% for 7 months at a previous time. We successfully treated this case with combined instillation of fluorometholon and cyclosporin after trabeculotomy. CONCLUSIONS Ligneous conjunctivitis must be considered as one type of differential diagnosis of vernal keratoconjunctivitis. Cyclosporin is an effective alternative for the treatment of ligneous conjunctivitis, especially in a case with a possible history of corticosteroid glaucoma.
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Affiliation(s)
- M Shimabukuro
- Department of Ophthalmology, Osaka University Medical School, Osaka, Japan
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45
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Itaya H, Hayashi A, Usui S, Hosohata J, Takahashi T, Fujikado T, Tano Y. Basic fibroblast growth factor inhibits choriocapillaris atrophy in rabbit. Am J Ophthalmol 2001; 132:94-100. [PMID: 11438060 DOI: 10.1016/s0002-9394(01)00921-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 10/18/2022]
Abstract
PURPOSE To examine the effect of basic fibroblast growth factor on induced choriocapillaris atrophy in vivo. METHODS Choriocapillaris atrophy was surgically induced in rabbits by a hydraulic retinal detachment followed by debridement of the retinal pigment epithelium under the detached retina. Three concentrations of basic fibroblast growth factor (0.1 microg/0.1 ml, 1 microg/0.1 ml, or 5 microg/0.1 ml) were injected into the subretinal space and into the vitreous cavity 1, 3, and 5 days after the surgery. For control, only Tris buffer was injected in the same manner. The rabbits were euthanized 7 days after the surgery. Choroidal vascular casts were made and examined by scanning electron microscopy. The choriocapillaris atrophy was quantified by computer-assisted image analysis of photographs of the choriocapillaries. The area of the choriocapillaris and number of intercapillary spaces in the choriocapillaris that corresponded to the density of the capillary network were measured. RESULTS The average area of the choriocapillaris in the eyes treated with 1 microg/0.1 ml of basic fibroblast growth factor was significantly larger at 75.1 +/- 3.0% than that in the control eyes at 67.2 +/- 5.6% (P =.021). The average area of the choriocapillaris in the 0.1 microg/0.1 ml of basic fibroblast growth factor group was not statistically different from the control. The number of intercapillary spaces of the choriocapillaris was 132 +/- 12 in the 0.1 microg/0.1 ml of basic fibroblast growth factor group, 124 +/- 46 in the 1 microg/0.1 ml of basic fibroblast growth factor group, and 75 +/- 14 in the control group. The higher number of spaces in the treated group was statistically significant (P =.026). CONCLUSIONS Basic fibroblast growth factor decreased the atrophy of the choriocapillaris after removal of the retinal pigment epithelium in rabbit eyes. These results suggest that basic fibroblast growth factor may play a role in the survival of the choriocapillaris in vivo.
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Affiliation(s)
- H Itaya
- Department of Ophthalmology, Osaka University Medical School, Osaka, Japan
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Hayashida-Hibino S, Watanabe H, Nishida K, Tsujikawa M, Tanaka T, Hori Y, Saishin Y, Tano Y. The effect of TGF-beta1 on differential gene expression profiles in human corneal epithelium studied by cDNA expression array. Invest Ophthalmol Vis Sci 2001; 42:1691-7. [PMID: 11431430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Abstract
PURPOSE TGF-betas regulate cell proliferation and differentiation, and they play important roles in maintenance of corneal epithelium. However, the precise function of TGF-betas in the corneal epithelium remains unclear. In this study, cDNA expression array technology was used to demonstrate the effect of TGF-beta1 on the simultaneous expression of a large number of genes in cultured human corneal epithelial cells (HCECs). The change in protein level expression of the specific genes influenced by TGF-beta1 was also investigated. METHODS Human cDNA expression array technology was used to study the simultaneous expression of 1176 specific cellular genes in HCECs incubated with TGF-beta1 (10 ng/ml). Moreover, gene-specific semiquantitative reverse transcription-polymerase chain reaction (RT-PCR) was used to confirm the gene expression pattern measured by the cDNA expression array. Western blot analysis was used to examine protein expression of the specific genes in the presence or absence of TGF-beta1. RESULTS TGF-beta1 significantly upregulated the expression of 19 genes and significantly downregulated ras-related protein, caspase10, and beta4-integrin in the treated HCECs. The expression of 277 genes including alpha3-integrin, PAI-2, transferrin receptor, and cyclin-D1 was studied. Semiquantitative RT-PCR analysis confirmed the TGF-beta1-mediated changes in expression patterns of these genes. Furthermore, Western blot analysis revealed that TGF-beta1 remarkably decreased PAI-2, transferrin receptor, and integrin alpha3, and increased caspase10 on the protein level. CONCLUSIONS TGF-beta1 regulates the expression of specific types of genes in HCECs. These results strongly suggest that TGF-beta1 is critically involved in the maintenance of the corneal epithelium through the control of a network of various signal-transduction pathways.
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Affiliation(s)
- S Hayashida-Hibino
- Department of Ophthalmology, Osaka University Medical School, E-7, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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Inatani M, Honjo M, Otori Y, Oohira A, Kido N, Tano Y, Honda Y, Tanihara H. Inhibitory effects of neurocan and phosphacan on neurite outgrowth from retinal ganglion cells in culture. Invest Ophthalmol Vis Sci 2001; 42:1930-8. [PMID: 11431463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Abstract
PURPOSE Neurocan and phosphacan are nervous tissue-specific chondroitin sulfate proteoglycans (CSPGs) that are highly expressed in postnatal rat retina. To elucidate potential roles of neurocan and phosphacan on neurite outgrowth from retinal ganglion cells (RGCs), in vitro experiments were conducted with purified RGCs. METHODS Neurocan and phosphacan were purified from postnatal rat brain by DEAE-column chromatography and subsequent gel chromatography. RGCs were obtained from postnatal rat retinas by a two-step immunopanning procedure using an anti-Thy 1,1 antibody and an anti-macrophage antibody. Neurite outgrowth from RGCs was examined on poly-L-lysine (PLL)-conditioned plates, and PLL-conditioned plates treated with neurocan or phosphacan. RESULTS Compared with PLL-conditioned plates, neurocan and phosphacan inhibited neurite outgrowth from RGCs at 48 and 72 hours after seeding. When chondroitin sulfate side chains linked to the core proteins were digested by chondroitinase ABC, the inhibitory effect remained, indicating that the core proteins are related to the effect. Furthermore, the digestion of chondroitin sulfate side chains linked to phosphacan core protein significantly promoted the inhibitory effect of phosphacan on neurite outgrowth from RGCs. CONCLUSIONS Neurocan and phosphacan, which are highly expressed in postnatal rat retina, inhibit neurite outgrowth from postnatal rat RGCs, indicating that these proteoglycans may be inhibitory factors against neurite outgrowth from RGCs during retinal development.
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Affiliation(s)
- M Inatani
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Japan
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Oshita T, Hayashi S, Inoue T, Hayashi A, Maeda N, Kusaka S, Ohji M, Fujikado T, Tano Y. Topographic analysis of astigmatism induced by scleral shortening in pig eyes. Graefes Arch Clin Exp Ophthalmol 2001; 239:382-6. [PMID: 11482343 DOI: 10.1007/s004170100265] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 11/27/2022] Open
Abstract
BACKGROUND Corneal astigmatism is a severe postoperative problem in foveal translocation surgery. We evaluated the corneal astigmatism induced by scleral shortening in pig eyes in vitro. METHODS We created three sizes of scleral shortening in pig eyes and examined the preoperative and postoperative corneal astigmatism. The three sizes of scleral shortening were; 6 mm x 12 mm, 9 mm x 12 mm, and 6 mm x 16 mm (radial x circumferential). The shortenings were created 11 mm from the limbus with 10 eyes in each group. Videokeratographic measurements were performed using the CAS System 2000, preoperatively and postoperatively, and the astigmatism caused by the scleral shortening was evaluated. RESULTS The surgically-induced astigmatism was 2.1 +/- 1.2 diopters (D) in the 6 mm x 12 mm group, 5.2+/-1.5 D in the 9 mm x 12 mm group, and 3.7+/-1.0 D in the 6 mm x 16 mm group. Corneal astigmatism caused by scleral shortening depended on both the radial and circumferential shortening. Pre- and postoperative topographic corneal maps showed an irregular astigmatism pattern (lazy bowtie pattern). Because the central zone of the cornea showed a relatively regular astigmatism, the corneal astigmatism induced by scleral shortening did not affect the predicted corneal acuity. CONCLUSIONS In foveal translocation surgery with scleral shortening, an excessive scleral resection in the radial direction can cause clinically intolerable regular and irregular astigmatism. Minimal scleral shortening that will satisfy the required translocated distance is recommended to reduce the risk/benefit ratio.
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Affiliation(s)
- T Oshita
- Department of Ophthalmology, Osaka University Medical School, Suita-shi, Japan
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Ohta H, Matsuda Y, Tokimasa S, Sawada A, Kim JY, Sashihara J, Amo K, Miyagawa H, Tanaka-Taya K, Yamamoto S, Tano Y, Aono T, Yamanishi K, Okada S, Hara J. Foscarnet therapy for ganciclovir-resistant cytomegalovirus retinitis after stem cell transplantation: effective monitoring of CMV infection by quantitative analysis of CMV mRNA. Bone Marrow Transplant 2001; 27:1141-5. [PMID: 11551024 DOI: 10.1038/sj.bmt.1703055] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [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: 11/08/2022]
Abstract
We report three pediatric patients with ganciclovir-resistant cytomegalovirus (CMV) retinitis who were successfully treated with foscarnet. The patients were recipients of hematopoietic stem cell transplantation (SCT) from HLA-mismatched donors. Because these patients had developed or experienced progressive CMV retinitis during ganciclovir therapy, they received foscarnet therapy at 60 mg/kg every 8 h. Their retinitis resolved promptly after initiating foscarnet therapy, suggesting foscarnet's effectiveness in treating ganciclovir-resistant CMV infection. The amount of CMV mRNA was quantitatively measured using an NASBA technique, which amplified the beta2.7 transcripts specific for CMV replication. This technique was useful for monitoring disease activity in a more rapid and sensitive manner than the PCR assay for CMV DNA.
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Affiliation(s)
- H Ohta
- Department of Developmental Medicine (Pediatrics), Osaka University Graduate School of Medicine, Suita, Japan
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Inoue T, Inoue Y, Nakamura T, Yoshida A, Inoue Y, Tano Y, Shimomura Y, Fujisawa Y, Aono A, Hayashi K. [The effect of immunization with herpes simplex virus glycoprotein D fused with interluekin-2 against murine herpetic keratitis]. Nippon Ganka Gakkai Zasshi 2001; 105:223-9. [PMID: 11329945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
PURPOSE To evaluate the effect of vaccination with fusion protein(gD-IL-2) consisting of herpes simplex type1(HSV-1) glycoprotein D(gD) and human interleukin-2(IL-2), and the effect of plasmid DNA vaccine encoding gD-IL-2 against murine herpetic keratitis. METHODS Plasmid containing gD-IL-2(pHDL-neol) was constructed, and gD-IL-2 peptide was purified. BALB/c mice were injected twice hypodermally or subconjunctivally with 1 microgram/0.1 ml of gD-IL-2 peptide, or twice subconjunctivally with 90 micrograms/0.05 ml of gD-IL-2 plasmid DNA. Neutralizing antibody titer and delayed-type hypersensitivity (DTH) against HSV-1 were measured. Immunized mice were challenged with CHR3 strain of HSV-1 via the cornea. The clinical picture of epithelial and stromal keratitis was scored. RESULTS Stromal keratitis was inhibited in gD-IL-2 peptide- or gD-IL-2 DNA-immunized mice, but epithelial keratitis was not. It was confirmed that plasmid gD-IL-2 elicited significant serum virus neutralizing titer and DTH response. CONCLUSION Vaccination with gD-IL-2 was effective against herpetic keratitis.
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Affiliation(s)
- T Inoue
- Department of Ophthalmology, Osaka University Medical School, 2-2 Yamadaoka, Suita 565-0871, Japan
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