Publications by authors named "Teruumi Minezaki"

4 Publications

  • Page 1 of 1

High-Throughput MicroRNA Profiling of Vitreoretinal Lymphoma: Vitreous and Serum MicroRNA Profiles Distinct from Uveitis.

J Clin Med 2020 Jun 12;9(6). Epub 2020 Jun 12.

Department of Ophthalmology, Tokyo Medical University, 6-7-1 Nishi-shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan.

Purpose: Vitreoretinal lymphoma (VRL) is a non-Hodgkin lymphoma of the diffuse large B cell type (DLBCL), which is an aggressive cancer causing central nervous system related mortality. The pathogenesis of VRL is largely unknown. The role of microRNAs (miRNAs) has recently acquired remarkable importance in the pathogenesis of many diseases including cancers. Furthermore, miRNAs have shown promise as diagnostic and prognostic markers of cancers. In this study, we aimed to identify differentially expressed miRNAs and pathways in the vitreous and serum of patients with VRL and to investigate the pathogenesis of the disease.

Materials And Methods: Vitreous and serum samples were obtained from 14 patients with VRL and from controls comprising 40 patients with uveitis, 12 with macular hole, 14 with epiretinal membrane, 12 healthy individuals. The expression levels of 2565 miRNAs in serum and vitreous samples were analyzed.

Results: Expression of the miRNAs correlated significantly with the extracellular matrix (ECM) ‒receptor interaction pathway in VRL. Analyses showed that miR-326 was a key driver of B-cell proliferation, and miR-6513-3p could discriminate VRL from uveitis. MiR-1236-3p correlated with vitreous interleukin (IL)-10 concentrations. Machine learning analysis identified miR-361-3p expression as a discriminator between VRL and uveitis.

Conclusions: Our findings demonstrate that aberrant microRNA expression in VRL may affect the expression of genes in a variety of cancer-related pathways. The altered serum miRNAs may discriminate VRL from uveitis, and serum miR-6513-3p has the potential to serve as an auxiliary tool for the diagnosis of VRL.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
June 2020

Reduction in the frequency of intravitreal bevacizumab administrations achieved by posterior subtenon injection of triamcinolone acetonide in patients with diffuse diabetic macular edema.

Jpn J Ophthalmol 2016 Sep 15;60(5):401-7. Epub 2016 Jun 15.

Department of Ophthalmology, Tokyo Medical University, Hachioji Medical Center, 1163 Tate-machi, Hachioji, Tokyo, 193-0998, Japan.

Purpose: To evaluate the effectiveness of posterior subtenon injections of triamcinolone acetonide (STTA) during treatment with intravitreal injections of bevacizumab (IVB) in eyes with diffuse diabetic macular edema (DDME).

Methods: Forty eyes of 20 patients with bilateral DDME with foveal thickness (FT) greater than 400 μm were studied. Initially, both eyes of each patient received 1.25 mg/0.05 ml of IVB. One eye then received 20 mg/0.5 ml of STTA at the onset and at 16, 32, and 48 weeks. For the control, the other eye was not treated with STTA. Patients were treated with additional IVB when DDME recurred during the study to maintain the FT at <350 μm. The FT, logMAR visual acuity (VA), and intraocular pressure (IOP) were monitored monthly for 56 weeks. The total number of IVB injections during the 1-year follow-up was also calculated.

Results: STTA-treated eyes had significantly more regression of FT and improvement of VA at several time points during the study than did the controls. The mean (SD) required number of IVB injections in the STTA-treated eyes during the study was 5.00 ± 1.75, which was significantly less than the 7.95 ± 1.57 in the control eyes.

Conclusions: Adjunctive STTA therapy to IVB for the treatment of DDME not only improved the morphological and functional regressions but also reduced the frequency of IVB treatments.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
September 2016

Retrospective study of threshold time for the conventional treatment of branch retinal artery occlusion.

Clin Ophthalmol 2014 22;8:1877-81. Epub 2014 Sep 22.

Department of Ophthalmology, Tokyo Medical University, Tokyo, Japan.

Purpose: To investigate the medical backgrounds of patients and the treatment periods from the onset of branch retinal artery occlusion to obtaining improved final visual acuity.

Methods: This was a retrospective case series study. A total of 68 consecutive patients (69 eyes) with branch retinal artery occlusion who visited Tokyo Medical University Hospital from 2007 to 2012 were included in this study. All patients underwent ophthalmic examinations and visual acuity tests. We reviewed their medical records for systemic conditions, as well as the periods from onset of symptoms to treatment. Participants were categorized into 2 groups: group A (n=36), which received any treatment within 24 hours from onset, and group B (n=33), which visited our hospital after 24 hours from onset. Best corrected visual acuity (BCVA) changes from the first to final visit and the relationships between systemic condition and visiting time to BCVA were assessed.

Results: At the first visit, 59% of the patients had BCVA over 20/40; the ratio was increased to 74% at the final visit. BCVA improved more than 2 lines for 35% of the patients and was unchanged for 57% of those receiving conventional treatment. BCVA over 20/40 was significantly lower in hyperlipidemia patients. Hypertension, diabetes mellitus, and significant carotid stenosis were not correlated. The mean BCVA at baseline (0.91±1.03) significantly recovered to 0.35±0.91 after treatment in group A (P<0.001, Student's t-test). The mean BCVA at baseline (0.30±0.64) was 0.25±0.61 at the final visit in group B (no significant change).

Conclusion: Conventional treatment within 24 hours from onset was acceptable for branch retinal artery occlusion.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
October 2014

Non-Descemet's stripping automated endothelial keratoplasty for bullous keratopathy secondary to iridoschisis.

Clin Ophthalmol 2013 3;7:1353-5. Epub 2013 Jul 3.

Department of Ophthalmology, Tokyo Medical University, Shinjukuku, Tokyo, Japan.

Purpose: To report a case of bullous keratopathy secondary to iridoschisis treated by non-Descemet's stripping automated endothelial keratoplasty (nDSAEK).

Case Report: A 79-year-old woman was referred to our hospital with loss of vision in the left eye. Slit lamp examination of her left eye showed a shallow anterior chamber with cataract and schisis in the inferior quadrant of iris stroma. Bullous keratopathy secondary to iridoschisis was diagnosed. Cataract surgery with iridectomy succeeded to deepen the anterior chamber and remove the floating iris leaf, although corneal edema remained. Four days later, nDSAEK was performed, which resolved corneal edema and restored visual acuity.

Conclusion: The two-step surgery of cataract surgery plus iridectomy followed by nDSAEK may be an effective strategy for treating bullous keratopathy secondary to iridoschisis.
View Article and Find Full Text PDF

Download full-text PDF

Source Listing
July 2013