1
|
Tanikawa A, Maruyama K, Liu S, Mao Z, Wang Z, Shiraki N, Hashida N, Kawasaki R, Chan K, Nishida K. Unveiling Key Pathological Indicators for Disease Progression in Vogt Koyanagi Harada Disease and Sympathetic Ophthalmia Through Advanced Choroidal Volume Analysis. Ocul Immunol Inflamm 2024:1-9. [PMID: 38709183 DOI: 10.1080/09273948.2024.2337836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 03/27/2024] [Indexed: 05/07/2024]
Abstract
PURPOSE To evaluate the association between quantitative parameters derived from volume analysis of optical coherence tomography (OCT) data and disease worsening in Vogt-Koyanagi-Harada disease (VKHD) and sympathetic ophthalmia (SO). METHODS This retrospective study, conducted at Osaka University Hospital, employed swept-source OCT scans from patients diagnosed with VKHD or SO between October 2012 and January 2021. The choroidal vessel structure was segmented and visualized in three dimensions, generating quantitative vessel volume maps. Region-specific choroidal vessel volume (CVV), choroidal volume (CV), and vessel index (VI) were scrutinized for their potential correlation with disease severity. RESULTS Thirty-five eyes of 18 VKHD and 2 SO patient (8 females, 10 males) were evaluated. OCT-derived CVV maps revealed regional CV alterations in VKHD and SO patients. Two parameters, i.e. CV at 3- and 6-month follow-ups (p = 0.044, p = 0.040, respectively, with area under the ROC curve of 0.70) and CVV at 6 months (p = 0.046, area under the ROC curve of 0.71), were significantly higher in recurrent VKHD and SO compared to effectively treated cases. CONCLUSIONS The volume analysis of OCT images facilitates a three-dimensional visualization of choroidal alterations, which may serve as a reflection of disease severity in VKHD and SO patients. Furthermore, noninvasive initial CVV or CV measurements may serve as potential biomarkers for predicting disease recurrence in VKHD and SO.
Collapse
Affiliation(s)
- Akira Tanikawa
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Kazuichi Maruyama
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- Department of Vision Informatics, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan
| | - Shiyi Liu
- Topcon Advanced Biomedical Imaging Laboratory, Oakland, New Jersey
| | - Zaixing Mao
- Topcon Advanced Biomedical Imaging Laboratory, Oakland, New Jersey
| | - Zhenguo Wang
- Topcon Advanced Biomedical Imaging Laboratory, Oakland, New Jersey
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Noriyasu Hashida
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Ryo Kawasaki
- Artificial Intelligence Center for Medical Research and Application, Osaka University Hospital, Suita, Osaka, Japan
- Graduate Scholl of Medicine/Division of Environmental Medicine and Population Science/Department of Social and Environmental Medicine, Osaka University, Suita, Osaka, Japan
| | - Kinpui Chan
- Topcon Advanced Biomedical Imaging Laboratory, Oakland, New Jersey
| | - Kohji Nishida
- Department of Ophthalmology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan
| |
Collapse
|
2
|
Yu C, Lad EM, Mathew R, Shiraki N, Littleton S, Chen Y, Hou J, Schlepckow K, Degan S, Chew L, Amason J, Kalnitsky J, Bowes Rickman C, Proia AD, Colonna M, Haass C, Saban DR. Microglia at sites of atrophy restrict the progression of retinal degeneration via galectin-3 and Trem2. J Exp Med 2024; 221:e20231011. [PMID: 38289348 PMCID: PMC10826045 DOI: 10.1084/jem.20231011] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/11/2023] [Accepted: 01/12/2024] [Indexed: 02/01/2024] Open
Abstract
Outer retinal degenerations, including age-related macular degeneration (AMD), are characterized by photoreceptor and retinal pigment epithelium (RPE) atrophy. In these blinding diseases, macrophages accumulate at atrophic sites, but their ontogeny and niche specialization remain poorly understood, especially in humans. We uncovered a unique profile of microglia, marked by galectin-3 upregulation, at atrophic sites in mouse models of retinal degeneration and human AMD. In disease models, conditional deletion of galectin-3 in microglia led to phagocytosis defects and consequent augmented photoreceptor death, RPE damage, and vision loss, indicating protective roles. Mechanistically, Trem2 signaling orchestrated microglial migration to atrophic sites and induced galectin-3 expression. Moreover, pharmacologic Trem2 agonization led to heightened protection but in a galectin-3-dependent manner. In elderly human subjects, we identified this highly conserved microglial population that expressed galectin-3 and Trem2. This population was significantly enriched in the macular RPE-choroid of AMD subjects. Collectively, our findings reveal a neuroprotective population of microglia and a potential therapeutic target for mitigating retinal degeneration.
Collapse
Affiliation(s)
- Chen Yu
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Eleonora M. Lad
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Rose Mathew
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Sejiro Littleton
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
- Department of Immunology, Duke University, Durham, NC, USA
| | - Yun Chen
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Jinchao Hou
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Kai Schlepckow
- German Center for Neurodegenerative Diseases Munich, Munich, Germany
| | - Simone Degan
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Lindsey Chew
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Joshua Amason
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Joan Kalnitsky
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
| | - Catherine Bowes Rickman
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
- Department of Cell Biology, Duke University, Durham, NC, USA
| | - Alan D. Proia
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
- Department of Pathology, Duke University School of Medicine, Durham, NC, USA
- Department of Pathology, Campbell University Jerry M. Wallace School of Osteopathic Medicine, Lillington, NC, USA
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Christian Haass
- German Center for Neurodegenerative Diseases Munich, Munich, Germany
- Chair of Metabolic Biochemistry, Faculty of Medicine, Biomedical Center, Ludwig-Maximilians-Universität München, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Daniel R. Saban
- Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA
- Department of Immunology, Duke University, Durham, NC, USA
| |
Collapse
|
3
|
Shiraki A, Tsuboi K, Wakabayashi T, Shiraki N, Nishida K. Reperfusion of retinal nonperfusion by neovascular-vascular anastomosis in proliferative diabetic retinopathy. Eur J Ophthalmol 2024; 34:NP28-NP32. [PMID: 37915118 DOI: 10.1177/11206721231210896] [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] [Indexed: 11/03/2023]
Abstract
BACKGROUND Retinal nonperfusion is a significant cause of vision loss in patients with proliferative diabetic retinopathy (PDR). Therefore, reperfusion of a nonperfusion has been a matter of strong interest, but few previous studies have demonstrated the potential benefits of reperfusion. CASE REPORTS Here, we report longitudinal optical coherence tomography angiographic analysis of two cases of PDR, in which the retinal neovascularization (RNV) that developed in response to retinal ischemia formed anastomoses with pre-existing physiological retinal vessels, resulting in both superficial and deep capillary reperfusion within the nonperfusion. We named this interesting finding "neovascular-vascular anastomosis." Retinal reperfusion due to neovascular-vascular anastomosis differed from recanalization, defined as reperfusion of once-occluded blood vessels, and has not been reported previously. CONCLUSION Our observation highlights the potential of RNV to rescue retinal ischemia by the formation of neovascular-vascular anastomoses.
Collapse
Affiliation(s)
- Akihiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Kotaro Tsuboi
- Casey Eye Institute, Oregon Health and Science University, Portland, USA
- Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan
| | - Taku Wakabayashi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
- Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Yamadaoka, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Suita, Japan
| |
Collapse
|
4
|
Suzue M, Shiraki N, Sakimoto S, Maruyama K, Nishida K. Optical coherence tomography angiography imaging in peripheral commotio retinae: A case report. Am J Ophthalmol Case Rep 2023; 32:101894. [PMID: 37609516 PMCID: PMC10440579 DOI: 10.1016/j.ajoc.2023.101894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 05/31/2023] [Accepted: 07/09/2023] [Indexed: 08/24/2023] Open
Abstract
Purpose We present a case of traumatic commotio retinae (CR), in which blood flow was evaluated using optical coherence tomography angiography (OCTA). Observations An 18-year-old Japanese man presented with traumatic retinal detachment and CR in his left eye, which had been hit by a handball. Fundus examination revealed peripheral retinal tear extending from the 1 to 3 o'clock position with retinal detachment, and CR near the area of tear. Fluorescein angiography (FA) confirmed an ischemic area near the retinal tear area at the CR. The patient underwent successful scleral buckling and cryopexy. Sequential OCTA imaging was performed and we were able to determine perfusion in the CR area, with maintained blood flow. Conclusions and importance In blunt eye trauma, peripheral commotio retinae can be assessed non-invasively over time using OCTA. OCTA is a useful method for evaluating peripheral retinal whitened areas.
Collapse
Affiliation(s)
- Masaki Suzue
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Susumu Sakimoto
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kazuichi Maruyama
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Vision Informatics, Graduate School of Medicine, Osaka University, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Japan
| |
Collapse
|
5
|
Wakabayashi T, Tsuboi K, Oshima Y, Ishida Y, Baba K, Shiraki N, Yamamoto Y, Fukuyama H, Abe K, Otsuka Y, Hashimoto R, Shiraki A, Hara C, Venkatesh R, Chhablani J, Gomi F, Kamei M, Maeno T, Yonekawa Y, Ikuno Y. Efficacy of Vitrectomy With Tamponade Versus No Tamponade for Myopic Traction Maculopathy: A Multicenter Study (SCHISIS Report No.1). Am J Ophthalmol 2023; 254:182-192. [PMID: 37343740 DOI: 10.1016/j.ajo.2023.06.005] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 06/05/2023] [Accepted: 06/08/2023] [Indexed: 06/23/2023]
Abstract
PURPOSE To evaluate the influence of tamponade on the visual and anatomic outcomes of pars plana vitrectomy for myopic traction maculopathy (MTM). DESIGN Multicenter, retrospective clinical cohort study. METHODS Consecutive eyes that underwent vitrectomy for advanced MTM with tamponade of air, sulfur hexafluoride (SF6), or perfluoropropane (C3F8) or without tamponade with a minimum follow-up of 12 months were included. Main outcome measures included postoperative visual acuity (VA) at 12 months in eyes with vs without tamponade. RESULTS We included a total of 193 eyes (193 patients) in this study; 136 eyes (70%) treated with tamponade were compared with 57 eyes (30%) treated without tamponade. Baseline characteristics did not differ significantly between the groups. Both groups showed significant visual improvement at 12 months (both P < .001). However, postoperative visual acuity and visual improvement at 12 months were significantly better (P = .003 and P = .028, respectively) in eyes without tamponade, although the MTM in these eyes without tamponade took longer to resolve (P = .039). Retinal thickness and the ellipsoid zone were more preserved in eyes without tamponade (P < .001 and P = .001, respectively). Complications such as macular holes did not differ between the groups. A novel imaging finding of "schisis bending (accordioning)" was identified during MTM resolution. CONCLUSIONS Vitrectomy either with or without tamponade for MTM was effective in improving vision in this study. However, eyes without tamponade experienced even better visual improvement and preserved retinal anatomy, despite a longer schisis resolution time. Surgery without tamponade may achieve better visual outcomes.
Collapse
Affiliation(s)
- Taku Wakabayashi
- From the Wills Eye Hospital (T.W., Y.Y.), Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA; Department of Ophthalmology (T.W., N.S., AS., C.H.), Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
| | - Kotaro Tsuboi
- Department of Ophthalmology (K.T., Y.I., K.B., M.K.), Aichi Medical University, Nagakute, Aichi, Japan; Casey Eye Institute (K.T.), Oregon Health & Science University, Portland, Oregon, USA
| | - Yusuke Oshima
- Oshima Eye Clinic (Y.O.), Seiyukai Medical Corporation, Takatsuki, Osaka, Japan
| | - Yuichiro Ishida
- Department of Ophthalmology (K.T., Y.I., K.B., M.K.), Aichi Medical University, Nagakute, Aichi, Japan
| | - Keita Baba
- Department of Ophthalmology (K.T., Y.I., K.B., M.K.), Aichi Medical University, Nagakute, Aichi, Japan
| | - Nobuhiko Shiraki
- Department of Ophthalmology (T.W., N.S., AS., C.H.), Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yuki Yamamoto
- Department of Ophthalmology (Y.Y., H.F. F.G.), Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Hisashi Fukuyama
- Department of Ophthalmology (Y.Y., H.F. F.G.), Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Department of Ophthalmology (H.F.), Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Kentaro Abe
- Department of Ophthalmology (K.A., Y.O., R.H., T.M.), Toho University Sakura Medical Center, Sakura, Japan
| | - Yuki Otsuka
- Department of Ophthalmology (K.A., Y.O., R.H., T.M.), Toho University Sakura Medical Center, Sakura, Japan
| | - Ryuya Hashimoto
- Department of Ophthalmology (K.A., Y.O., R.H., T.M.), Toho University Sakura Medical Center, Sakura, Japan
| | - Akihiko Shiraki
- Department of Ophthalmology (T.W., N.S., AS., C.H.), Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Chikako Hara
- Department of Ophthalmology (T.W., N.S., AS., C.H.), Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Ramesh Venkatesh
- Department of Retina and Vitreous (R.V.), Narayana Nethralaya, Rajaji Nagar, Bengaluru, Karnataka, India
| | - Jay Chhablani
- Department of Ophthalmology (J.C.), University of Pittsburgh Eye Center, Pittsburg, Pennsylvania, USA
| | - Fumi Gomi
- Department of Ophthalmology (Y.Y., H.F. F.G.), Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Motohiro Kamei
- Department of Ophthalmology (K.T., Y.I., K.B., M.K.), Aichi Medical University, Nagakute, Aichi, Japan
| | - Takatoshi Maeno
- Department of Ophthalmology (K.A., Y.O., R.H., T.M.), Toho University Sakura Medical Center, Sakura, Japan
| | - Yoshihiro Yonekawa
- From the Wills Eye Hospital (T.W., Y.Y.), Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | | |
Collapse
|
6
|
Wakabayashi T, Shiraki N, Tsuboi K, Oshima Y, Abe K, Yamamoto Y, Hisashi F, Baba K, Ishida Y, Otsuka Y, Shiraki A, Suzue M, Hashimoto R, Venkatesh R, Chhablani J, Gomi F, Kamei M, Maeno T, Regillo CD, Yonekawa Y, Ikuno Y. Risk Factors and Outcomes of Postoperative Macular Hole Formation after Vitrectomy for Myopic Traction Maculopathy: SCHISIS Report No. 2. Ophthalmol Retina 2023; 7:779-787. [PMID: 37257585 DOI: 10.1016/j.oret.2023.05.017] [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: 01/10/2023] [Revised: 05/15/2023] [Accepted: 05/22/2023] [Indexed: 06/02/2023]
Abstract
PURPOSE To evaluate the incidence, pathogenesis, risk factors, and treatment outcomes of postoperative macular hole (MH) after pars plana vitrectomy (PPV) for myopic traction maculopathy (MTM). DESIGN Multicenter, interventional, retrospective case series. SUBJECTS Consecutive eyes that underwent PPV for MTM with a minimum 6-month follow-up. METHODS We investigated the characteristics and treatment outcomes of postoperative MH after MTM surgery. MAIN OUTCOME MEASURES Incidence, risk factors, and anatomic and visual outcomes of postoperative MH. RESULTS We included 207 eyes (207 patients) with a mean follow-up of 25.9 months. During follow-up, 24 (11.6%) eyes developed MH (10 with concurrent MH retinal detachment); 15 eyes within 30 days (early), 4 eyes between 31 and 180 days (intermediate), and 5 eyes after 180 days (late). Logistic regression analysis revealed male gender (odds ratio [OR], 2.917; 95% confidence interval [CI], 1.198-7.100; P = 0.018), thinner preoperative choroidal thickness (OR, 0.988; 95% CI, 0.976-1.000; P = 0.048), and use of indocyanine green for internal limiting membrane peeling (OR, 2.960; 95% CI, 1.172-7.476; P = 0.022) as significant risk factors for postoperative MH. Internal limiting membrane peeling with a fovea-sparing technique tended to protect against postoperative MH, but it was not statistically significant (P = 0.096), because 1 eye still developed MH. Postoperative MHs were treated by observation (6 eyes), in-office octafluoropropane (C3F8) gas injection (7 eyes), or PPV (11 eyes). Macular hole closure was achieved in 20 eyes (83%). The hole closure rate was 67% (4/6 eyes) after observation, 71% (5/7 eyes) after C3F8 gas injection, and 91% (10/11 eyes) after PPV. However, visual outcomes were significantly worse for eyes with postoperative MH than those without (0.38 ± 0.43 vs. 0.68 ± 0.46; P = 0.002). CONCLUSIONS Postoperative MH may occur in 11.6% of patients with MTM at any time after surgery. Retreatment resulted in relatively favorable anatomic closure but unfavorable visual outcomes. FINANCIAL DISCLOSURE(S) Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
Collapse
Affiliation(s)
- Taku Wakabayashi
- Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania; Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Kotaro Tsuboi
- Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan; Casey Eye Institute, Oregon Health & Science University, Portland, Oregon
| | - Yusuke Oshima
- Oshima Eye Clinic, Seiyukai Medical Corporation, Takatsuki, Osaka, Japan
| | - Kentaro Abe
- Department of Ophthalmology, Toho University Sakura Medical Center, Sakura, Japan
| | - Yuki Yamamoto
- Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Fukuyama Hisashi
- Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Keita Baba
- Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan
| | - Yuichiro Ishida
- Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan
| | - Yuki Otsuka
- Department of Ophthalmology, Toho University Sakura Medical Center, Sakura, Japan
| | - Akihiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Masaki Suzue
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Ryuya Hashimoto
- Department of Ophthalmology, Toho University Sakura Medical Center, Sakura, Japan
| | - Ramesh Venkatesh
- Department of Retina and Vitreous, Narayana Nethralaya, Rajaji Nagar, Bengaluru, Karnataka, India
| | - Jay Chhablani
- Department of Ophthalmology, University of Pittsburgh Eye Center, Pittsburgh, Pennsylvania
| | - Fumi Gomi
- Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Motohiro Kamei
- Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan
| | - Takatoshi Maeno
- Department of Ophthalmology, Toho University Sakura Medical Center, Sakura, Japan
| | - Carl D Regillo
- Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Yoshihiro Yonekawa
- Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania
| | | |
Collapse
|
7
|
Miyazawa K, Sakimoto S, Kanai M, Shiraki A, Takahashi S, Shiraki N, Maruyama K, Sakaguchi H, Nishida K. Vascular tortuosity analysis in eyes with epiretinal membrane imaged by optical coherence tomography angiography. BMC Ophthalmol 2022; 22:198. [PMID: 35501767 PMCID: PMC9063110 DOI: 10.1186/s12886-022-02420-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 04/20/2022] [Indexed: 11/12/2022] Open
Abstract
Background This study aimed to evaluate macular vessel tortuosity using optical coherence tomography angiography (OCTA) and its association with visual outcomes in eyes undergoing surgery for epiretinal membrane (ERM). Methods The study included 22 consecutive patients who underwent vitrectomy for ERM between May 2019 and July 2020 and OCTA at Osaka University Hospital. All patients underwent ophthalmologic examinations, including swept-source OCTA. Standard vitrectomy was performed, and the patients were followed up for 6 months postoperatively. Distortion of retinal vessels was calculated using two parameters: the actual vessel length in the vessel section (VL) and the direct vessel branching point distance (BD) in the three quadrants (nasal, temporal, and superior-inferior) of the macula. We analyzed the correlation between these parameters and visual outcomes. Results Significantly longer VL was found at 1, 3, and 6 months postoperatively (p = 0.006, 0.008, and 0.022, respectively) in the temporal quadrant compared to baseline temporal VL. Significantly shorter VL was found in nasal quadrants at 1 and 3 months (p = 0.046 and p = 0.018) in the comparison of nasal baseline VL. VL/BDs were correlated with the same postoperative best-corrected visual acuity (BCVA) at 1, 3, and 6 months (p = 0.035, 0.035, and 0.042, respectively) in the superior-inferior quadrant. A significant association of changes in VL and BCVA was found at 3 and 6 months postoperatively in the nasal quadrant (p = 0.018 and 0.0455, respectively). Conclusions Changes in vascular distortion after ERM surgery can be measured using OCTA. The change in vessels around the macula became more linear; this was associated with visual outcomes after surgery.
Collapse
Affiliation(s)
- Kosuke Miyazawa
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Susumu Sakimoto
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan. .,Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan.
| | - Masanori Kanai
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Akihiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Shizuka Takahashi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kazuichi Maruyama
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hirokazu Sakaguchi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Department of Ophthalmology, Gifu University Graduate School of Medicine, Yanagido, Gifu, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Rm. E7, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, Japan
| |
Collapse
|
8
|
Shiraki N, Maruyama K, Hayashi R, Oguchi A, Murakawa Y, Katayama T, Takigawa T, Sakimoto S, Quantock AJ, Tsujikawa M, Nishida K. PAX6-positive microglia evolve locally in hiPSC-derived ocular organoids. Stem Cell Reports 2021; 17:221-230. [PMID: 35030319 PMCID: PMC8828554 DOI: 10.1016/j.stemcr.2021.12.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 11/24/2022] Open
Abstract
Microglia are the resident immune cells of the central nervous system (CNS). They govern the immunogenicity of the retina, which is considered to be part of the CNS; however, it is not known how microglia develop in the eye. Here, we studied human-induced pluripotent stem cells (hiPSCs) that had been expanded into a self-formed ectodermal autonomous multi-zone (SEAM) of cells that partially mimics human eye development. Our results indicated that microglia-like cells, which have characteristics of yolk-sac-like linage cells, naturally develop in 2D eye-like SEAM organoids, which lack any vascular components. These cells are unique in that they are paired box protein 6 (PAX6)-positive, yet they possess some characteristics of mesoderm. Collectively, the data support the notion of the existence of an isolated, locally developing immune system in the eye, which is independent of the body’s vasculature and general immune system. Eye-like organoids from hiPSCs contained immune cells similar to microglia cells RNA-sequencing shows they have specific characteristic of microglia Single-cell analyses indicate they resemble yol-sac-derived myeloid progenitors These cells are unique in that they are PAX6- (eye master gene) positive immune cells
Collapse
Affiliation(s)
- Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kazuichi Maruyama
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan; Department of Vision Informatics, Osaka University Graduate School of Medicine, Osaka, Japan; Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan.
| | - Ryuhei Hayashi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan; Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan; Department of Stem Cells and Applied Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Akiko Oguchi
- RIKEN-IFOM Joint Laboratory for Cancer Genomics, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan
| | - Yasuhiro Murakawa
- RIKEN-IFOM Joint Laboratory for Cancer Genomics, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan; Institute for the Advanced Study of Human Biology, Kyoto University, Kyoto, Japan; Department of Medical Systems Genomics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomohiko Katayama
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Toru Takigawa
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Susumu Sakimoto
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan; Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan
| | - Andrew J Quantock
- School of Optometry and Vision Sciences, Cardiff University, Cardiff, Wales, UK
| | - Motokazu Tsujikawa
- Department of Biomedical Informatics, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka, Japan; Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan.
| |
Collapse
|
9
|
Ishibashi T, Sakimoto S, Shiraki N, Nishida K, Sakaguchi H, Nishida K. Association between disorganization of retinal inner layers and visual acuity after proliferative diabetic retinopathy surgery. Sci Rep 2019; 9:12230. [PMID: 31439887 PMCID: PMC6706380 DOI: 10.1038/s41598-019-48679-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/09/2019] [Indexed: 11/16/2022] Open
Abstract
We report to evaluate if disorganization of the retinal inner layers (DRIL) obtained by swept-source optical coherence tomography (SS-OCT) predicts the postoperative best-corrected visual acuity (BCVA) to treat proliferative diabetic retinopathy (PDR). Twenty-one eyes of 21 patients who underwent vitrectomy for PDR were studied retrospectively. BCVA and SS-OCT images were obtained until 6 months postoperatively. The associations between BCVA and SS-OCT parameters measured in a 1-mm central foveal area were evaluated. The DRIL length, external limiting membrane disruption, and ellipsoid zone (EZ) disruption 1 month postoperatively were associated positively with the postoperative logarithm of the minimum angle of resolution (logMAR) BCVA at 1, 3, and 6 months (1 month, p = 0.009, p = 0.013, p = 0.001; 3 months, p = 0.03, p = 0.021, p = 0.002; and 6 months, p = 0.021, p = 0.013, and p = 0.005, respectively). The eyes with a 500-µm or longer DRIL 1 month postoperatively (19%, 4/21 eyes) had significantly worse VA at 1, 3, and 6 months postoperatively (p = 0.007, p = 0.008, and p = 0.020, respectively). Multilinear regression analysis of all visits until 6 months postoperatively showed that the DRIL was correlated more significantly (p = 0.0004) with logMAR BCVA than the disrupted EZ length. The DRIL in the early postoperative period may predict the visual outcomes after treating PDR.
Collapse
Affiliation(s)
- Tomoyuki Ishibashi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Susumu Sakimoto
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan.
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kentaro Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hirokazu Sakaguchi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| |
Collapse
|
10
|
Winegarner A, Wakabayashi T, Fukushima Y, Sato T, Hara-Ueno C, Busch C, Nishiyama I, Shiraki N, Sayanagi K, Nishida K, Sakaguchi H, Nishida K. Changes in Retinal Microvasculature and Visual Acuity After Antivascular Endothelial Growth Factor Therapy in Retinal Vein Occlusion. Invest Ophthalmol Vis Sci 2019; 59:2708-2716. [PMID: 29860457 DOI: 10.1167/iovs.17-23437] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose To investigate the changes in the retinal microvasculature during the course of anti-VEGF therapy in eyes with macular edema due to retinal vein occlusion (RVO) and their association with visual outcomes. Methods The vessel density (VD) and foveal avascular zone (FAZ) area in the superficial capillary plexus (SCP) and deep capillary plexus (DCP) were quantitatively measured by optical coherence tomography angiography (OCTA) in 48 consecutive eyes with RVO before and 1, 3, 6, 9, and 12 months after anti-VEGF therapy. Anti-VEGF therapy was performed either with ranibizumab or aflibercept following a pro re nata (PRN) regimen. The correlation between post-treatment best-corrected visual acuity (BCVA) and changes in the retinal microvasculature evaluated by OCTA were assessed. Results The BCVA improved significantly at 12 months (P < 0.001). Better BCVA at 12 months was significantly associated with a better VD in the SCP and DCP both at baseline (R2 = 0.524, P < 0.001 and R2 = 0.457, P < 0.001, respectively) and at 12 months (R2 = 0.521, P < 0.001 and R2 = 0.662, P < 0.001, respectively). Overall, both VD and FAZ did not change significantly during the 12 months. However, the progression of nonperfusion was observed in the SCP in 6 (13%) eyes and in the DCP in 10 (21%) eyes. The number of macular edema recurrence was significantly associated with a decrease in the VD (P = 0.006 [SCP] and P < 0.001 [DCP]) and less visual gain (P = 0.02) after treatment. Conclusions Anti-VEGF therapy maintains retinal perfusion in most patients with RVO. Preserving retinal perfusion is crucial for better visual outcomes.
Collapse
Affiliation(s)
- Andrew Winegarner
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Taku Wakabayashi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoko Fukushima
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tatsuhiko Sato
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Chikako Hara-Ueno
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Caleb Busch
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Issei Nishiyama
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kaori Sayanagi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kentaro Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hirokazu Sakaguchi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| |
Collapse
|
11
|
Busch C, Wakabayashi T, Sato T, Fukushima Y, Hara C, Shiraki N, Winegarner A, Nishida K, Sakaguchi H, Nishida K. Retinal Microvasculature and Visual Acuity after Intravitreal Aflibercept in Diabetic Macular Edema: An Optical Coherence Tomography Angiography Study. Sci Rep 2019; 9:1561. [PMID: 30733512 PMCID: PMC6367399 DOI: 10.1038/s41598-018-38248-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 12/20/2018] [Indexed: 12/11/2022] Open
Abstract
We investigated changes in retinal vascular area and the foveal avascular zone (FAZ) after intravitreal aflibercept in diabetic macular edema (DME) and the association of these changes with visual outcomes. The retinal vascular area in the superficial capillary plexus (SCP) and the deep capillary plexus (DCP) and the FAZ area were measured using optical coherence tomography angiography (OCTA) in 23 eyes of 23 patients with DME, before and after intravitreal aflibercept. Overall, there was no significant change in retinal vascular area or FAZ. Better BCVA after treatment was significantly associated with larger retinal vascular area in the SCP and the DCP, both at baseline (R2 = 0.512, P < 0.001 and R2 = 0.361, P = 0.002, respectively) and after intravitreal aflibercept (R2 = 0.717, P < 0.001 and R2 = 0.618, P < 0.001, respectively). MAs were observed in the DCP in 20 eyes (87%), but only detected in four eyes (17%) in the SCP before treatment. The number of eyes with MAs in the DCP significantly decreased to 13 (57%) after treatment (P = 0.049). The persistence of DME was associated with persistent MAs (P = 0.019) and less visual gain (P = 0.031) following treatment. Thus, preserving retinal perfusion and the resolution of MAs are associated with better vision and resolution of the DME after intravitreal aflibercept.
Collapse
Affiliation(s)
- Caleb Busch
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Taku Wakabayashi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan.
| | - Tatsuhiko Sato
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoko Fukushima
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Chikako Hara
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Andrew Winegarner
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kentaro Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hirokazu Sakaguchi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| |
Collapse
|
12
|
Motoda S, Shiraki N, Ishihara T, Sakaguchi H, Kabata D, Takahara M, Kimura T, Kozawa J, Imagawa A, Nishida K, Shintani A, Iwahashi H, Shimomura I. Predictors of postoperative bleeding after vitrectomy for vitreous hemorrhage in patients with diabetic retinopathy. J Diabetes Investig 2018; 9:940-945. [PMID: 29265703 PMCID: PMC6031499 DOI: 10.1111/jdi.12791] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 11/25/2017] [Accepted: 12/10/2017] [Indexed: 11/30/2022] Open
Abstract
AIMS/INTRODUCTION To clarify the association between perioperative variables and postoperative bleeding in pars plana vitrectomy for vitreous hemorrhage in diabetic retinopathy. MATERIALS AND METHODS The present retrospective study enrolled 72 eyes of 64 patients who were admitted to Osaka University Hospital between April 2010 and March 2014, and underwent vitrectomy for vitreous hemorrhage as a result of diabetic retinopathy. RESULTS Postoperative bleeding developed in 12 eyes. Using binomial logistic regression analysis, we found that the duration of operation was the only significant variable associated with postoperative bleeding within 12 weeks after vitrectomy. Furthermore, Poisson regression analysis identified fasting blood glucose just before vitrectomy, no treatment with antiplatelet drugs and treatment with antihypertensive drugs, as well as duration of operation, to be significantly associated with the frequency of bleeding within 52 weeks after vitrectomy. CONCLUSIONS Long duration of operation can be used to predict bleeding within both 12 and 52 weeks after vitrectomy. In addition, fasting blood glucose just before vitrectomy, no treatment with antiplatelet drugs and treatment with antihypertensive drugs might be risk factors for postoperative bleeding up to 1 year after vitrectomy.
Collapse
Affiliation(s)
- Saori Motoda
- Department of Metabolic MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Nobuhiko Shiraki
- Department of OphthalmologyGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Takuma Ishihara
- Department of Clinical Epidemiology and BiostatisticsGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Hirokazu Sakaguchi
- Department of OphthalmologyGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Daijiro Kabata
- Department of Clinical Epidemiology and BiostatisticsGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Mitsuyoshi Takahara
- Department of Metabolic MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
- Department of Diabetes Care MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Takekazu Kimura
- Department of Metabolic MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
- Department of Diabetes Care MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Junji Kozawa
- Department of Metabolic MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Akihisa Imagawa
- Department of Metabolic MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Kohji Nishida
- Department of OphthalmologyGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Ayumi Shintani
- Department of Clinical Epidemiology and BiostatisticsGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Hiromi Iwahashi
- Department of Metabolic MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
- Department of Diabetes Care MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| | - Iichiro Shimomura
- Department of Metabolic MedicineGraduate School of MedicineOsaka UniversitySuitaOsakaJapan
| |
Collapse
|
13
|
Wakabayashi T, Ikuno Y, Shiraki N, Matsumura N, Sakaguchi H, Nishida K. Inverted internal limiting membrane insertion versus standard internal limiting membrane peeling for macular hole retinal detachment in high myopia: one-year study. Graefes Arch Clin Exp Ophthalmol 2018; 256:1387-1393. [PMID: 29911271 DOI: 10.1007/s00417-018-4046-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 02/05/2018] [Accepted: 06/12/2018] [Indexed: 11/30/2022] Open
Abstract
PURPOSE The aim of this study was to investigate the efficacy of pars plana vitrectomy with inverted internal limiting membrane (ILM) insertion for macular hole retinal detachment (MHRD) in high myopia. METHODS We studied 49 eyes of 49 consecutive patients who underwent vitrectomy for MHRD and were followed for more than 12 months postoperatively. Eyes that underwent vitrectomy with inverted ILM insertion from October 2013 to August 2015 were compared with eyes that underwent standard ILM peeling from October 2006 to September 2013. Macular hole closure rate, retinal reattachment, and postoperative visual acuity (VA) at 6 and12 months were retrospectively evaluated. RESULTS This series included 13 eyes in the inverted ILM insertion group and 36 eyes in the standard ILM peeling group. The MH closure rate was significantly better in the inverted ILM group (92 vs 39%) (P = 0.003). The initial and final retinal reattachment rates (92% vs. 86%, and 100% in both groups, respectively) did not differ significantly between groups. Although the mean preoperative VA did not differ significantly between the groups, postoperative VA tended to be better in the inverted ILM group at 12 months (P = 0.059). The rate of visual improvement of three or more lines in the inverted ILM insertion group (85%) was higher than that in the standard ILM peeling group (47%) at 12 months (P = 0.045). CONCLUSION Compared to conventional ILM peeling, inverted ILM insertion has a higher MH closure rate and tendency of better postoperative VA in patients with MHRD.
Collapse
Affiliation(s)
- Taku Wakabayashi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, E-7, Suita, Osaka, 565-0871, Japan.
| | - Yasushi Ikuno
- Department of Ophthalmology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, E-7, Suita, Osaka, 565-0871, Japan
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, E-7, Suita, Osaka, 565-0871, Japan
| | - Nagakazu Matsumura
- Department of Ophthalmology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, E-7, Suita, Osaka, 565-0871, Japan
| | - Hirokazu Sakaguchi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, E-7, Suita, Osaka, 565-0871, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, E-7, Suita, Osaka, 565-0871, Japan
| |
Collapse
|
14
|
Shiraki N, Sakimoto S, Sakaguchi H, Nishida K, Nishida K, Kamei M. Vitrectomy without prone positioning for rhegmatogenous retinal detachments in eyes with inferior retinal breaks. PLoS One 2018; 13:e0191531. [PMID: 29373582 PMCID: PMC5786309 DOI: 10.1371/journal.pone.0191531] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 12/06/2017] [Indexed: 11/24/2022] Open
Abstract
Purpose To compare the anatomic and functional outcomes of pars plana vitrectomy (PPV) for treating rhegmatogenous retinal detachments (RRDs) between two groups with and without postoperative prone positioning. Methods This retrospective cohort study included 142 eyes of 142 patients with a primary RRD. All patients underwent PPV with 20% sulfur hexafluoride gas tamponade and were divided into two groups: the groups that did and did not maintain a prone position postoperatively. All patients were followed for more than 3 months. The main outcome measures were the best-corrected visual acuity (BCVA), retinal reattachment rate, and postoperative complications. Results Sixty-five eyes were included in the prone position group and 77 eyes in the group without prone positioning; the respective initial reattachment rates were 83.1% and 96.1%, a difference that reach significance (p = 0.011). In the eyes with inferior breaks, the initial reattachment rate was 94.7% (18 eyes) without prone positioning, which was significantly (p = 0.036) better than the 60% (6 eyes) initial reattachment rate in the group with prone positioning. In the eyes without inferior breaks, there was no significant difference in the initial reattachment rates between the two groups. The BCVAs at the 3-month postoperative visit did not differ significantly between the two groups. An epiretinal membrane (ERM) was observed postoperatively in 10 (13.0%) eyes in the group without prone positioning; no ERMs were seen postoperatively in eyes in which the internal limiting membrane (ILM) was peeled during PPV. Conclusions PPV without postoperative prone positioning is associated with a higher reattachment rate in eyes with a RRD, especially those with inferior retinal breaks. PPV with postoperative supine and lateral positioning might be beneficial to manage RRDs associated with inferior retinal breaks if ILM peeling is performed intraoperatively.
Collapse
Affiliation(s)
- Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Department of Ophthalmology, Osaka, Japan
| | - Susumu Sakimoto
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Department of Ophthalmology, Osaka, Japan
- * E-mail:
| | - Hirokazu Sakaguchi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Department of Ophthalmology, Osaka, Japan
| | - Kentaro Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Department of Ophthalmology, Osaka, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Department of Ophthalmology, Osaka, Japan
| | - Motohiro Kamei
- Department of Ophthalmology, Aichi Medical University, Nagakute, Japan
| |
Collapse
|
15
|
Wakabayashi T, Sato T, Hara-Ueno C, Fukushima Y, Sayanagi K, Shiraki N, Sawa M, Ikuno Y, Sakaguchi H, Nishida K. Retinal Microvasculature and Visual Acuity in Eyes With Branch Retinal Vein Occlusion: Imaging Analysis by Optical Coherence Tomography Angiography. Invest Ophthalmol Vis Sci 2017; 58:2087-2094. [PMID: 28388705 DOI: 10.1167/iovs.16-21208] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose To investigate microvascular changes in the superficial capillary plexus (SCP) and deep capillary plexus (DCP) in eyes with resolved branch retinal vein occlusion (BRVO) and their association with best-corrected visual acuity (BCVA). Methods Eighty-five eyes (82 consecutive patients) with BRVO after resolution of the macular edema were retrospectively evaluated. All patients underwent optical coherence tomography angiography (OCTA) for assessment of microvascular changes, including capillary telangiectasia, microaneurysm, and disruption of the foveal avascular zone (FAZ). The areas of vascular perfusion and FAZ in the SCP and DCP were quantitatively evaluated. Best-corrected visual acuity was measured on the same day as OCTA examination. The correlation between BCVA and OCTA findings was assessed. Results In eyes with resolved BRVO, the mean vascular perfusion areas in the SCP and DCP within a 3 × 3-mm area were 3.75 ± 0.49 and 3.80 ± 0.55 mm2, respectively. The mean FAZ areas of the SCP and DCP were 0.57 ± 0.36 and 0.76 ± 0.38 mm2, respectively. Better BCVA was significantly associated with a larger vascular perfusion area in the SCP (P < 0.001) and DCP (P < 0.001), and a smaller FAZ area in the SCP (P = 0.025) and DCP (P = 0.017). Stepwise multiple regression analysis revealed that the vascular perfusion area in the DCP was the most important parameter significantly correlated with BCVA (R2 = 0.33, P < 0.001). Conclusions Preservation of the deep retinal vasculature is crucial for better visual function in BRVO.
Collapse
Affiliation(s)
- Taku Wakabayashi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tatsuhiko Sato
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Chikako Hara-Ueno
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoko Fukushima
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kaori Sayanagi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Nobuhiko Shiraki
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Miki Sawa
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yasushi Ikuno
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hirokazu Sakaguchi
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Kohji Nishida
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Suita, Japan
| |
Collapse
|
16
|
Yoshimoto N, Nishiyama T, Yamashita H, Takahashi S, Shiraki N, Sugiura H, Endo Y, Iwasa M, Asano T, Hato Y, Fujii Y, Toyama T. Abstract P5-13-07: Genetic polymorphism of estrogen metabolizing enzyme CYP17A1 rs743572 impacts on serum testosterone level in Japanese premenopausal women. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p5-13-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The incidence of breast cancer in Japanese women has doubled in all age groups over the past two decades. We recently demonstrated that this marked increase is mostly due to an increase in the estrogen receptor (ER)-positive subtype, and we created risk prediction models for ER-positive breast cancer in both pre- and post- menopausal women using genetic factors (single nucleotide polymorphism (SNP)), environmental risk factors, serum hormones and growth factors by logistic regression analysis. Serum level of testosterone, which is the precursor of estradiol in estradiol synthesis, was found to be a risk predictor in both pre- and post- menopausal women. On the other hand, it has been reported that some SNPs, including those of estrogen-related genes such as ESR1 and CYP17A1, are correlated with breast cancer risk by genome-wide association studies. To acquire some insights into this mechanism, we analyzed genetic factors (14 SNPs), serum hormones and growth factors (estradiol, testosterone, prolactin, insulin-like growth factor 1 (IGF1) and IGF binding protein 3 (IGFBP3)) in 913 women with breast cancer and 278 disease-free controls for correlation between them.
Serum testosterone and prolactin levels were significantly higher in ER-positive breast cancer patients than in disease-free controls in both pre- (p<0.0001, p<0.0001) and post- (p<0.0001, p = 0.007) menopausal women, and serum estradiol level was significantly higher in ER-positive breast cancer patients than in disease-free controls only in premenopausal women (p = 0.0005). There were significant differences in serum hormone levels among the women with each SNP genotype (homozygotes of major allele, heterozygotes and homozygotes of minor allele), including testosterone among rs743572 genotype (p = 0.014), estradiol among rs827421 genotype (p = 0.016), IGF-1 among rs6905370 genotype (p = 0.032), and prolactin among rs1042522 genotype (p = 0.035) in premenopausal women, as well as estradiol among rs3803662 genotype (p = 0.027) and IGFBP3 among rs6905370 genotype (p = 0.036) in postmenopausal women. In particular, serum testosterone level was significantly different among the rs743572, which is one of the enzymes that convert testosterone to estradiol, of genotypes (AA: 0.308 +/- 0.180 ng/ml, AG: 0.319 +/- 0.193 ng/ml and GG: 0.380 +/- 0.187 ng/ml, p = 0.014). On the other hand, the rs743572 heterozygotes of CYP17A1 have been reported to have increased breast cancer risk than homozygotes of both the major allele and minor allele in premenopausal women. Further studies are required to clarify this mechanism.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P5-13-07.
Collapse
Affiliation(s)
- N Yoshimoto
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - T Nishiyama
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - H Yamashita
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - S Takahashi
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - N Shiraki
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - H Sugiura
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - Y Endo
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - M Iwasa
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - T Asano
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - Y Hato
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - Y Fujii
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| | - T Toyama
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan; Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Nagoya City West Medical Center, Nagoya, Aichi, Japan
| |
Collapse
|
17
|
Yoshimoto N, Nishiyama T, Toyama T, Takahashi S, Shiraki N, Sugiura H, Endo Y, Iwasa M, Asano T, Fujii Y, Yamashita H. Abstract P4-12-06: A mammographic density prediction model using environmental factors, endogenous hormones and growth factors in Japanese women. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p4-12-06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The incidence of breast cancer in Japanese women has doubled in all age groups over the past two decades, making it important to evaluate breast cancer risk factors in Japanese women. It is well known that mammographic density is positively associated with breast cancer risk in Western countries, and mammographic density is known to be affected by some environmental factors, serum hormones, and growth factors. We performed stepwise variable selection in a multiple regression model with fifteen independent variables as described below, based on the Akaike information criteria (AIC) to build a mammographic density prediction model using a dataset of 1191 women (913 women with breast cancer and 278 disease-free controls). The variables included were: environmental risk factors (body-mass index (BMI), age at menarche, pregnancy, age at first birth, breastfeeding, family history of breast cancer, age at menopause, use of hormone replacement therapy, alcohol intake and smoking), serum hormones and growth factors (estradiol, testosterone, prolactin, insulin-like growth factor 1 (IGF1) and IGF binding protein 3 (IGFBP3)) and mammographic density. The resulting prediction model is:
Mammographic density = + 0.000476 (IGF1) −0.0605 (testosterone) − 0.0508 (IGFBP3) − 0.00683 (age) − 0.0175 (BMI) + 0.00883 (age at menarche) − 0.0153 (breast feeding), (R2 = 0.336).
In this model, IGF1, testosterone, IGFBP3, age, BMI, age at menarche, and breastfeeding were considered to be important factors. IGF1 and age at menarche were positively associated with mammographic density, while on the other hand testosterone, IGFBP3, age, BMI, and breast feeding were negatively associated with mammographic density. Further studies are required to build a modified model incorporating serial measurements of serum hormones and growth factors to take into account time-dependent changes of serum hormones and growth factors, and to assess its accuracy.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P4-12-06.
Collapse
Affiliation(s)
- N Yoshimoto
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - T Nishiyama
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - T Toyama
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - S Takahashi
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - N Shiraki
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - H Sugiura
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Y Endo
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - M Iwasa
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - T Asano
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Y Fujii
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - H Yamashita
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| |
Collapse
|
18
|
Shiba T, Shiraki N, Furushita M, Maeda T. Free Amino Acid and ATP-Related Compounds in Sterile Tiger Puffer Fish (Takifugu rubripes
) Fillets Stored at 4C. J FOOD PROCESS PRES 2012. [DOI: 10.1111/jfpp.12031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Tsuneo Shiba
- Department of Food Science and Technology; National Fisheries University; Yoshimi Shimonoseki 759-6595 Japan
| | - Nobuhiko Shiraki
- Yamaguchi Prefectural Fisheries Research Center; Senzaki Nagato 759-4106 Japan
| | - Manabu Furushita
- Department of Food Science and Technology; National Fisheries University; Yoshimi Shimonoseki 759-6595 Japan
| | - Toshimichi Maeda
- Department of Food Science and Technology; National Fisheries University; Yoshimi Shimonoseki 759-6595 Japan
| |
Collapse
|
19
|
Yoshimoto N, Nishiyama T, Toyama T, Takahashi S, Shiraki N, Sugiura H, Endo Y, Iwasa M, Fujii Y, Yamashita H. P4-10-11: Genetic and Environmental Predictors, Endogenous Hormones and Growth Factors and Risk of Estrogen Receptor-Positive Breast Cancer in Japanese Women. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p4-10-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The incidence of breast cancer in Japanese women has doubled in all age groups over the past two decades. We have recently demonstrated that this marked increase is mostly due to an increase in the estrogen receptor (ER)-positive subtype. It is necessary to establish risk factors capable of predicting the risk of ER-positive breast cancer which will enable the efficient selection of candidates for preventive chemotherapy. We analyzed genetic factors, including 14 single nucleotide polymorphisms (SNPs), environmental risk factors (body-mass index (BMI), age at menarche, pregnancy, age at first birth, breastfeeding, family history of breast cancer, age at menopause, use of hormone replacement therapy, alcohol intake and smoking), serum hormones and growth factors (estradiol, testosterone, prolactin, insulin-like growth factor 1 (IGF1) and IGF binding protein 3 (IGFBP3)) and mammographic density in 913 women with breast cancer and 278 disease-free controls. To identify important risk factors, risk prediction models for ER-positive breast cancer in both pre- and postmenopausal women were created by logistic regression analysis. In premenopausal women, 1 SNP (CYP19A1-rs10046), age, pregnancy, breastfeeding, alcohol intake, serum levels of prolactin, testosterone and IGFBP3 were considered to be risk predictors. In postmenopausal women, 1 SNP (TP53-rs1042522), age, BMI, age at menopause, serum levels of testosterone and IGF1 were identified as risk predictors. Risk factors may differ between women of different menopausal status, and inclusion of common genetic variants and serum hormone measurements as well as environmental factors might improve risk assessment models. Further validation studies will clarify appropriate risk groups for preventive chemotherapy.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P4-10-11.
Collapse
Affiliation(s)
- N Yoshimoto
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - T Nishiyama
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - T Toyama
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - S Takahashi
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - N Shiraki
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - H Sugiura
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Y Endo
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - M Iwasa
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Y Fujii
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - H Yamashita
- 1Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| |
Collapse
|
20
|
Kawanishi H, Watanabe K, Kurayoshi M, Kawai T, Shiraki N, Arakawa T, Moriishi M, Tsuchiya S. A Case of Hemodialysis Patients with Encapsulating Peritoneal Sclerosis (EPS)-like Finding. Hemodial Int 2003. [DOI: 10.1046/j.1492-7535.2003.01234.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
21
|
Oshima H, Miyagawa H, Sato Y, Satake M, Shiraki N, Nishikawa H, Arakawa A, Ogino H, Hara M. Adenofibroma of the endometrium after tamoxifen therapy for breast cancer: MR findings. Abdom Imaging 2002; 27:592-4. [PMID: 12173004 DOI: 10.1007/s00261-001-0098-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We report a case of adenofibroma of the endometrium in a 69-year-old woman. This patient was receiving tamoxifen therapy after surgery for breast cancer. Magnetic resonance imaging showed an intracavitary mass containing multiple cystic components. We suggest adenofibroma as a possible diagnosis in cases of uterine masses with multiple cystic components and no clinical evidence of malignancy.
Collapse
Affiliation(s)
- H Oshima
- Department of Radiology, Nagoya City University Medical School, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Hara M, Iida A, Tohyama J, Miura N, Shiraki N, Itoh M, Ohba S, Tateyama H. FDG-PET findings in sclerosing hemangioma of the lung: a case report. Radiat Med 2001; 19:215-8. [PMID: 11550723] [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: 04/16/2023]
Abstract
We report a case of sclerosing hemangioma of the lung that showed an intermediately increased accumulation of 18F-fluorodeoxyglucose (FDG) on positron emission tomography (PET). We suggest that FDG-PET may be useful for considering a lesion as benign or low-grade malignant.
Collapse
Affiliation(s)
- M Hara
- Department of Radiology, Nagoya City University Medical School, Nagoya, Japan
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Shiraki N, Hamada A, Ohmura T, Tokunaga J, Oyama N, Nakano M. Increase in doxorubicin cytotoxicity by inhibition of P-glycoprotein activity with lomerizine. Biol Pharm Bull 2001; 24:555-7. [PMID: 11379779 DOI: 10.1248/bpb.24.555] [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: 11/22/2022]
Abstract
Acquired resistance to chemotherapy is a major problem during cancer treatment. One mechanism for drug resistance is overexpression of the MDR (multidrug resistance)1 gene encoding the transmembrane efflux pump, P-glycoprotein (P-gp). Calcium channel blockers such as verapamil, nifedipine and nicardipine have been shown to reverse cellular drug resistance by inhibiting P-gp drug efflux. This study evaluated whether a new calcium channel blocker, lomerizine, influenced doxorubicin (Dox) cytotoxicity and P-gp activity in a P-gp-expressing cell line compared to a non-expressing subline. Verapamil, and even more markedly, lomerizine, increased cellular uptake of calcein transported by P-gp in a P-gp-expressing erythroleukemia cell line, K562-Dox. Ten microM of lomerizine reduced the IC50 of doxorubicin in the K562-Dox from 60000 ng/ml to 800 ng/ml, whereas the IC50 of doxorubicin in the K562 subline was only marginally affected by these drugs. Lomerizine showed greater reduction in P-gp efflux than verapamil at an equimolar concentration. These results suggest that lomerizine has the clinical potential to reverse tumor MDR involving the efflux protein P-gp.
Collapse
Affiliation(s)
- N Shiraki
- Department of Pharmacy, Kumamoto University Hospital, Japan
| | | | | | | | | | | |
Collapse
|
24
|
Shiraki N, Hamada A, Yasuda K, Fujii J, Arimori K, Nakano M. Inhibitory effect of human immunodeficiency virus protease inhibitors on multidrug resistance transporter P-glycoproteins. Biol Pharm Bull 2000; 23:1528-31. [PMID: 11145192 DOI: 10.1248/bpb.23.1528] [Citation(s) in RCA: 29] [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: 11/22/2022]
Abstract
The objective of this study was to determine whether human immunodeficiency virus (HIV) protease inhibitors (saquinavir, ritonavir and nelfinavir) interact with other HIV protease inhibitors and/or HIV reverse transcriptase inhibitors (zidovudine, didanosine, lamivudine, zalcitabine and sanilvudine). We measured transport of nelfinavir, an HIV protease inhibitor which is known as a substrate for the multidrug resistance transporter P-glycoprotein (P-gp), in an epithelial monolayer model and Ki for P-gp of some drugs by a calcein flux assay. Transport in a basal to apical direction was 2-fold greater than apical to basal flux for nelfinavir, Ki for P-gp of a potent P-gp inhibitor cyclosporin A was 1.09 microM and those of ritonavir and nelfinavir were 111 microM and 28.6 microM, whereas all HIV reverse transcriptase inhibitors gave high K1 values. These data show that nelfinavir, which is a substrate for P-gp, inhibits a P-gp function as a drug efflux pump and that HIV reverse transcriptase inhibitors do not inhibit P-gp.
Collapse
Affiliation(s)
- N Shiraki
- Department of Pharmacy, Kumamoto University Hospital, Japan
| | | | | | | | | | | |
Collapse
|
25
|
Sugiyama A, Shiraki N, Sugiyama M, Nishiyama Y. [Study of carrier rate and immunity to group B streptococcus (GBS) in unmarried women]. Nihon Koshu Eisei Zasshi 1991; 38:106-11. [PMID: 1932783] [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: 12/29/2022]
Abstract
In order to study the carrier rate and immunity to Group B streptococcus (GBS) of unmarried women, an urinary culture was taken and blood serum was assayed by ELISA for type-specific antibody in female students. Heretofore there have been very few reports about GBS in unmarried women in Japan. The validity of urinary culture as a substitute for vaginal culture was initially studied. The carriage of GBS was evaluated by vaginal, anal and urinary cultures in 90 pregnant women. Carrier detection were 18 carriers (20.0%) by vaginal culture, 22 carriers (24.4%) by anal culture and 18 carriers (20.0%) by urinary culture. Fifteen of the 18 subjects (83.3%) detected as carriers by vaginal culture carried the same strain of GBS in urine. Therefore, an urinary culture appears to perform as well as the vaginal culture as a convenient test for GBS. Nineteen (16.2%) of 117 unmarried women had positive urinary cultures for GBS. Among the 19 with positive cultures for GBS, 3 (15.8%) were type Ia, 3 (15.8%) were type Ib, 8 (42.0%) were type III and 5 (26.4%) were other types. Type II was not detected. From the type-specific antibody assay, the histogram of ODI (optimal density index) frequency of types Ia, Ib and III showed a concentration in a relatively narrow range at low ODI, while that of type II was dispersed over a relatively wide range.
Collapse
Affiliation(s)
- A Sugiyama
- Laboratory of Public Health, Nagoya Women's University
| | | | | | | |
Collapse
|
26
|
Seino H, Nishitani H, Seki T, Hisamoto N, Tazunoki T, Shiraki N, Ohtsubo M, Yamashita K, Sekiguchi T, Nishimoto T. RCCl is a nuclear protein required for coupling activation of cdc2 kinase with DNA synthesis and for start of the cell cycle. Cold Spring Harb Symp Quant Biol 1991; 56:367-75. [PMID: 1819498 DOI: 10.1101/sqb.1991.056.01.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- H Seino
- Department of Molecular Biology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Abstract
The antidotal effects of antiinflammatory agents, inhibitors of bioamine syntheses, an opioid antagonist and other pharmacological agents on lethal toxicity, leukocytosis and ear inflammation, were investigated in mice subcutaneously administered or topically exposed to T-2 toxin, a trichothecene mycotoxin of Fusarium species. The acute lethal toxicity of T-2 toxin was reduced by administration of the steroidal anti-inflammatory agents, prednisolone and dexamethasone, and prolongation of survival times was demonstrated with an antihistaminic agent, diphenhydramine, and an opioid antagonist, naloxone. Prednisolone also antagonized leukocytosis and the increment of ear weight caused by T-2 toxin. These findings suggest that the action site(s) of steroidal anti-inflammatory agents is involved in the development of the toxic actions of T-2 toxin, and the implications of the results with bioamines and opioids are also discussed.
Collapse
Affiliation(s)
- J C Ryu
- Department of Toxicology and Microbial Chemistry, Faculty of Pharmaceutical Sciences, Science University of Tokyo, Japan
| | | | | |
Collapse
|