Toshikatsu Kaburaki

Prof. Toshikatsu Kaburaki

orcid

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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12 July 2017 in British Journal of Haematology
Verified
Journal Article
Open access
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TKToshikatsu Kaburaki
Toshikatsu Kaburaki
KTKazuki Taoka
Kazuki Taoka
JMJunko Matsuda
Junko Matsuda
HYHideomi Yamashita
Hideomi Yamashita
IMIzuru Matsuda
Izuru Matsuda
MAMakoto Aihara
Makoto Aihara
Summary: Primary intraocular lymphoma (IOL) has a propensity for central nervous system (CNS) relapse within 2 years of initial diagnosis, affecting clinical outcome. To reduce CNS relapse, we performed the combination treatment protocols of intravitreal methotrexate injections, methotrexate‐based systemic induction chemotherapy and consolidation high‐dose cytarabine and reduced‐dose whole brain radiation therapy (rdWBRT, 23·4 Gy) for B‐cell primary IOL with or without newly diagnosed CNS involvement. All patients underwent longitudinal brain magnetic resonance imaging (MRI) and cognitive assessment for evaluation of treatment‐induced leucoencephalopathy. Seventeen patients initiated and 16 completed the protocol treatment. CNS relapse occurred in 2 patients and intraocular relapse in 3. Four‐year progression‐free survival (PFS) was 74·9% and 4‐year overall survival (OS) was 86·3%, with a median follow‐up period of 48·9 months. Of 11 patients without CNS involvement, 1 had CNS relapse and 3 intraocular relapse, and 4‐year PFS and OS was 72·7% and 88·9%, respectively. Although white matter abnormalities shown by MRI were significantly increased at 4 years after rdWBRT, only one patient developed mild cognitive impairment. The combination of intravitreal chemotherapy, prophylactic systemic chemotherapy and rdWBRT for primary IOL showed a potential to reduce CNS relapse rate and improved 4‐year PFS and OS without increase of cognitive dysfunction.

31 January 2014 in Japanese Journal of Ophthalmology
Verified
Journal Article
Closed access
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TJThe Ocular Behçet Disease Research Group of Japan
The Ocular Behçet Disease Research Group of Japan
TKToshikatsu Kaburaki
Toshikatsu Kaburaki
KNKenichi Namba
Kenichi Namba
KSKoh-Hei Sonoda
Koh-Hei Sonoda
TKTakeshi Kezuka
Takeshi Kezuka
NONobuyuki Ohguro
Nobuyuki Ohguro

1 June 2021 in Ophthalmology
Verified
Journal Article
Open access
ESEric B. Suhler
Eric B. Suhler
GJGlenn J. Jaffe
Glenn J. Jaffe
EFEric Fortin
Eric Fortin
LLLyndell Lim
Lyndell Lim
PMPauline T. Merrill
Pauline T. Merrill
JRJames T. Rosenbaum
James T. Rosenbaum
To evaluate long-term efficacy and safety of extended treatment with adalimumab in patients with noninfectious intermediate, posterior, or panuveitis. Open-label, multicenter, phase 3 extension study (VISUAL III). Adults who had completed a randomized, placebo-controlled phase 3 parent trial (VISUAL I or II) without treatment failure (inactive uveitis) or who discontinued the study after meeting treatment failure criteria (active uveitis). Patients received subcutaneous adalimumab 40 mg every other week. Data were collected for ≤ 362 weeks. Adverse events (AEs) were recorded until 70 days after the last dose. Long-term safety and quiescence; other efficacy variables included inflammatory lesions, anterior chamber cell and vitreous haze grade, macular edema, visual acuity, and dose of uveitis-related systemic corticosteroids. At study entry, 67% of patients (283/424) showed active uveitis and 33% (141/424) showed inactive uveitis; 60 patients subsequently met exclusion criteria, and 364 were included in the intention-to-treat analysis. Efficacy variables were analyzed through week 150, when approximately 50% of patients (214/424) remained in the study. Patients showing quiescence increased from 34% (122/364) at week 0 to 85% (153/180) at week 150. Corticosteroid-free quiescence was achieved by 54% (66/123) and 89% (51/57) of patients with active or inactive uveitis at study entry. Mean daily dose of systemic corticosteroids was reduced from 9.4 ± 17.1 mg/day at week 0 (n = 359) to 1.5 ± 3.9 mg/day at week 150 (n = 181). The percentage of patients who achieved other efficacy variables increased over time for those with active uveitis at study entry and was maintained for those with inactive uveitis. The most frequently reported treatment-emergent AEs of special interest were infections (n = 275; 79 events/100 patient-years [PY]); AEs and serious AEs occurred at a rate of 396 events/100 PY and 15 events/100 PY, respectively. Long-term treatment with adalimumab led to quiescence and reduced corticosteroid use for patients who entered VISUAL III with active uveitis and led to maintenance of quiescence for those with inactive uveitis. AEs were comparable with those reported in the parent trials and consistent with the known safety profile of adalimumab.

2 August 2018 in BMC Ophthalmology
Verified
Journal Article
Open access
PDF file
SSShintaro Shirahama
Shintaro Shirahama
TKToshikatsu Kaburaki
Toshikatsu Kaburaki
HNHisae Nakahara
Hisae Nakahara
RTRie Tanaka
Rie Tanaka
MTMitsuko Takamoto
Mitsuko Takamoto
MAMakoto Aihara
Makoto Aihara
The distribution of uveitis varies with genetic, ethnic, geographic, environmental, and lifestyle factors. Epidemiological information about the patterns of uveitis is useful when an ophthalmologist considers the diagnosis of uveitis. Therefore, it is important to identify the causes of uveitis over the years in different regions. The purposes of this study were to characterize the uveitis patients who first arrived at the University of Tokyo Hospital in 2013–2015, and to analyze the changes in the patterns of uveitis from 2004 to 2012 to 2013–2015. We retrospectively identified 750 newly arrived patients with uveitis who visited the Uveitis Clinic in the University of Tokyo Hospital between January 2013 and December 2015, using clinical records. We extracted data on patient age, sex, diagnosis, anatomic location of inflammation, laboratory test results of blood and urine, and chest X-ray and fluorescein fundus angiography findings for each patient. In addition, we compared these data with those from 2004 to 2012 to analyze the changes in the patterns of uveitis. A definite diagnosis was established in 445 patients (59.3%). The most common diagnoses were herpetic iridocyclitis (7.5%), sarcoidosis (6.1%), Behçet’s disease (4.4%), Vogt–Koyanagi–Harada disease (4.1%), and intraocular lymphoma (4.1%). The most frequent unclassified type of uveitis was suspected sarcoidosis (22.3%). Analysis of the changes in the patterns of uveitis in the central Tokyo area from 2004 to 2012 to 2013–2015 revealed notable increasing trends of herpetic iridocyclitis and intraocular lymphoma, and increasing trends of bacterial endophthalmitis, fungal endophthalmitis, and juvenile chronic iridocyclitis. In contrast, the frequency of sarcoidosis, Behçet’s disease, and Vogt–Koyanagi–Harada disease decreased. The patterns of uveitis changed considerably from 2004 to 2012 to 2013–2015. Continuous investigations about the epidemiology of uveitis are needed to diagnose uveitis more accurately.

12 June 2009 in Eye
Verified
Journal Article
Closed access
TKToshikatsu Kaburaki
Toshikatsu Kaburaki
TKT Koshino
T Koshino
HKH Kawashima
H Kawashima
JNJ Numaga
J Numaga
ATA Tomidokoro
A Tomidokoro
MAM Araie
M Araie

17 February 2020 in Scientific Reports
Verified
Journal Article
Open access
PDF file
HFHisako Fukunaga
Hisako Fukunaga
TKToshikatsu Kaburaki
Toshikatsu Kaburaki
SSShintaro Shirahama
Shintaro Shirahama
RTRie Tanaka
Rie Tanaka
HMHiroshi Murata
Hiroshi Murata
MAMakoto Aihara
Makoto Aihara
Treatment of uveitis is complicated because of its multiple aetiologies and elevation of various inflammatory mediators. To determine the mediators that are elevated in the vitreous humor according to the aetiology of the uveitis, we examined the concentrations of 21 inflammatory cytokines, 7 chemokines, and 5 colony-stimulating/growth factors in vitreous samples from 57 eyes with uveitis associated with intraocular lymphoma (IOL, n = 13), sarcoidosis (n = 15), acute retinal necrosis (ARN, n = 13), or bacterial endophthalmitis (BE, n = 16). Samples from eyes with idiopathic epiretinal membrane (n = 15), which is not associated with uveitis, were examined as controls. Heat map analysis demonstrated that the patterns of inflammatory mediators in the vitreous humor in eyes with uveitis were disease-specific. Pairwise comparisons between the 5 diseases showed specific elevation of interferon-α2 in ARN and interleukin (IL)-6, IL-17A, and granulocyte-colony stimulating factor in BE. Pairwise comparisons between IOL, ARN, and BE revealed that levels of IL-10 in IOL, RANTES (regulated on activation, normal T cell expressed and secreted) in ARN, and IL-22 in BE were significantly higher than those in the other 2 types of uveitis. These mediators are likely to be involved in the immunopathology of specific types of uveitis and may be useful biomarkers.