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Dive into the research topics where Y. Takano is active.

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Featured researches published by Y. Takano.


Ophthalmology | 2010

Application of visante optical coherence tomography tear meniscus height measurement in the diagnosis of dry eye disease

Osama M. A. Ibrahim; Murat Dogru; Y. Takano; Yoshiyuki Satake; Tais Hitomi Wakamatsu; Kazumi Fukagawa; Kazuo Tsubota; Hiroshi Fujishima

PURPOSEnTo investigate the applicability of tear meniscus height (TMH) measurement using Visante optical coherence tomography (OCT) in the diagnosis of dry eye disease.nnnDESIGNnProspective, controlled, single-center study.nnnPARTICIPANTSnTwenty-four right eyes of 24 patients (6 males, 18 females; mean age, 63.14±13.4 years) with definite dry eye according to the Japanese dry eye diagnostic criteria and 27 right eyes of 27 control subjects (12 males, 15 females; mean age, 56.04±14.22 years) were recruited.nnnMETHODSnAll subjects underwent slit-lamp TMH measurement, OCT upper and lower TMH measurements, tear film breakup time (BUT) measurements, vital stainings, and Schirmer test. The results were compared between the 2 groups by Mann-Whitney test.nnnMAIN OUTCOME MEASURESnThe correlation between the clinical findings of slit-lamp TMH, strip meniscometry examination, tear functions, vital staining scores, and the OCT upper and lower TMH parameters were tested by Spearmans correlation test. Receiver operating characteristic (ROC) curve technique was used to evaluate the sensitivity, specificity and cutoff values of OCT TMH examination in the diagnosis of dry eye.nnnRESULTSnThe OCT upper and lower TMH values, slit-lamp TMH, strip meniscometry, tear film BUT, and vital staining scores were significantly lower in the dry eye patients compared with controls (P<0.001). A significant correlation between the OCT upper and lower TMH measurements as well as slit-lamp TMH, strip meniscometry, tear functions, vital staining scores, and the Schirmer test was found. The ROC curve technique analysis of the OCT lower TMH showed that, when the cutoff value was set at <0.30 mm, the sensitivity and specificity of the testing were 67% and 81%, respectively.nnnCONCLUSIONSnThe Visante OCT is a quick, noninvasive method for assessing the TMH, with acceptable sensitivity, specificity, and repeatability, and may have potential applications for the diagnosis and evaluation of dry eye disease.


Optometry and Vision Science | 2008

Tear film with "Orgahexa EyeMasks" in patients with meibomian gland dysfunction.

Reiko Ishida; Yukihiro Matsumoto; Tatsuya Onguchi; Minako Kaido; Kenji Iwamuro; Julie Kobayashi; Y. Takano; Jun Shimazaki; Eiki Goto; Murat Dogru; Kazuo Tsubota

Purpose. To evaluate the efficacy of a new Orgahexa eye warmer mask for patients with simple meibomian gland dysfunction (MGD) in a prospective comparative study. Methods. Twenty right eyes of 20 patients with simple MGD, and 22 right eyes of 22 healthy controls were studied. Subjects were allocated to Orgahexa or conventional eye mask wear for 10 min (short-term study), and for 2 weeks (long-term study). Eyelid temperature measurements, slit lamp examination, tear film break-up time, Schirmer test, vital staining, tear film lipid layer interferometry, and dry eye symptomatology scoring with visual analog scales were performed. Results. The Orgahexa eye warmer improved both tear function and ocular surface status, and decreased symptoms significantly without any complications. Conclusions. The Orgahexa eye warmer is a simple, safe, and convenient method, which seems to improve the ocular surface status and tear functions in patients with simple MGD.


Clinical Rheumatology | 2007

Two cases of SAPHO syndrome accompanied by classic features of Behcet’s disease and review of the literature

Hiroki Yabe; Y. Takano; Eiki Nomura; Masanori Nakayama; Michiya Kihara; Shun-ichi Miyakawa; Yukio Horiuchi

We describe two patients with SAPHO (synovitis–acne–pustulosis–hyperostosis–ostitis) syndrome who presented some of the classic features of Behcet’s disease. The first case is a man diagnosed as SAPHO at 74xa0years old. His major complaint is pain and swelling of the bilateral sterno-clavicular region for more than 14xa0years. Another conspicuous complication was bilateral glaucoma and episodes of iritis were recognized during the follow-up period. The second case is a 65-year-old woman, who first consulted us with right knee pain. As she had a past history of palmoplantar pustulosis and anterior chest pain, her sterile knee arthritis was diagnosed as SAPHO. She also had been suffering from recurrent oral aphthous ulceration since 6xa0months before visiting our hospital. Considering the clinical courses of our two cases and a review of five previously reported cases, these conditions may imply that classic features of Behcet’s disease are minor complications of SAPHO syndrome. Human leukocyte antigen typing and frequent association of sacroiliitis in our cases and in the review of the literature for SAPHO syndrome with some of the classic features of Behcet’s disease may indicate this condition to be a closely related disease with seronegative spondylo-arthritis.


Rheumatology International | 2010

Mucosal lesions may be a minor complication of SAPHO syndrome: a study of 11 Japanese patients with SAPHO syndrome

Hiroki Yabe; Hisaji Ohshima; Y. Takano; Takahiro Koyanagi; Hiroshi Usui; Kenya Nojiri; Kensuke Ochi; Michiya Kihara; Yukio Horiuchi

Since the term synovitis–acne–pustulosis–hyperostosis–osteitis (SAPHO) syndrome was proposed by Chamot et al. (Rev Rhum Mal Osteoartic 54:187–196, 1987), clinical reviews concerning this syndrome have been mainly reported from Europe. We carried out a retrospective analysis of 11 Japanese patients with SAPHO syndrome, and reviewed the clinical features of our series in comparison with those in a European large case study. In this study the major features of SAPHO syndrome were chronic osteitis of the anterior chest wall and pustulotic arthro-ostitis with middle age onset, and mucosal lesions seemed to be a minor complication of SAPHO syndrome. The non-erosive peripheral large joints arthritis and the particular HLA types (HLA-B51, B52, or A26), which had been reported to be increased in Behcet’s disease, were frequently seen in SAPHO syndrome with mucosal lesions. This study also suggests that SAPHO syndrome with mucosal lesions may be part of a broader disease spectrum including Behcet’s disease.


Current Eye Research | 2008

Suppressive Effects of Tranilast on Eotaxin-1 Production from Cultured Conjunctival Fibroblasts

Richard Yudi Hida; Y. Takano; N. Okada; Murat Dogru; Yoshiyuki Satake; Kazumi Fukagawa; Hiroshi Fujishima

Purpose: Eotaxin, a CC-chemokine with selective chemotactic effects for eosinophils, has been reported to play an important role in allergic conjunctival diseases. We previously reported that eotaxin is produced by conjunctival fibroblasts and keratocytes on stimulation with Th2 cytokines. Tranilast is known to have anti-allergic properties. In this study, we examined the inhibitory effect of tranilast, an anti-allergic drug, on eotaxin-1 production from cultured conjunctival fibroblasts. Methods:Conjunctival fibroblasts obtained from normal patients were cultured in DMEM/F12 medium. On the fifth passage, the cells were transferred to a 96-well plate and, after starvation for 24 hr, TNF-α, IL-4, and tranilast or dexamethasone were added. After 48 hr, the concentrations of eotaxin-1 in the supernatants were measured by ELISA, and the cells were tested for eotaxin-1 expression by real-time PCR. Results:Eotaxin-1 production was observed on simultaneous stimulation with TNF-α and IL-4. This production was inhibited by both tranilast and dexamethasone. Inhibition of eotaxin-1 expression was also observed by real-time PCR. Conclusions: Eotaxin-1 production from conjunctival fiboblasts was inhibited by both tranilast and dexamethasone. These results suggest that the anti-allergic effect of tranilast may be partly due to the inhibition of eotaxin-1 production from conjunctival fibroblasts.


Investigative Ophthalmology & Visual Science | 2006

The Intensity Of Corneal Reflex From The Eye Increased After Punctal Plug Insertion In Dry Eye Patients With Sjogren Syndrome

Eiki Goto; Murat Dogru; Enrique Adan Sato; Y. Takano; S. Matsuda; E. Shinozaki; K. Tsubota


Investigative Ophthalmology & Visual Science | 2004

Prostaglandin J2 in tears of patients with severe allergic conjunctival diseases

Yoshiyuki Satake; E. Akagawa; A. Igarashi; N. Okada; Y. Takano; Kazumi Fukagawa; K. Tsubota; Hiroshi Fujishima


Investigative Ophthalmology & Visual Science | 2009

The Efficacy of Topical Tacrolimus Hydrate in Patients With Akc/vkc

Yoshiyuki Satake; Y. Takano; Murat Dogru; A. Igarashi; N. Okada; Masami Tanaka; Kazumi Fukagawa; Jun Shimazaki; Hiroshi Fujishima


Investigative Ophthalmology & Visual Science | 2009

Ocular Allergy World Study: Comparison of Demographics of Severe Ocular Allergy Patients in Japan, Italy and Brazil

Y. Takano; Murat Dogru; Jun Shoji; S. Bonini; D. Barbosa; Yoshiyuki Satake; Hiroshi Fujishima


Investigative Ophthalmology & Visual Science | 2003

EPC-K1 May Inhibit Conjunctival Eosinophilic Inflammation

Naoko Okada; Kazumi Fukagawa; Hirohisa Saito; Y. Takano; K. Tsubota; Hiroshi Fujishima

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Hiroki Yabe

Jichi Medical University

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