Abstract
Introduction
This clinical study aimed to investigate the effect of brinzolamide, a topical carbonic anhydrase inhibitor, on corneal endothelial cells (CECs) in patients with glaucoma using a follow-up clinical study design.
Methods
Patients with primary open-angle glaucoma or ocular hypertension were administrated an ophthalmic solution of either latanoprost alone (LT) as a control (n = 18) or latanoprost plus brinzolamide (LT + BR; n = 16). CECs were examined at baseline and at 4, 12, 24, and 48 weeks in 18 and 16 eyes of the LT and LT + BR groups, respectively, using a non-contact specular microscope. CECs were evaluated by parameters, including cell density (CD), coefficient of variation (CV) in cell size, and percentage hexagonality (Hex).
Results
Compared with the baseline intraocular pressure (IOP), the mean IOP in the LT group was significantly reduced at 12 and 24 weeks, whereas that in the LT + BR group was significantly reduced at all time points (P < 0.01). The mean CD, CV, and Hex at baseline were not significantly different between the two groups. No significant time-course changes in CD, CV, or Hex were observed in either group. At 48 weeks, there was no significant difference in the mean CD, CV, or Hex between the two groups.
Conclusion
Patients treated with LT + BR showed significant IOP reduction. However, the use of brinzolamide in addition to latanoprost had no influence on CECs during the one-year follow-up period.
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Acknowledgments
No funding or sponsorship was received for this study or publication of this article. The article processing charges were funded by the authors. All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship for this manuscript, take responsibility for the integrity of the work as a whole, and have given the final approval for the version to be published.
Disclosures
Tadashi Nakano received consultant fees from Topcon Corporation and lecture fees from Alcon Japan Ltd, Santen Pharmaceutical Co., Ltd, Otsuka Pharmaceutical Co., Ltd, R-Tech Ueno Ltd, Senju Pharmaceutical Co., Ltd, Carl Zeiss Co., Ltd, Kaken Pharmaceutical Co., Ltd, MSD K.K., and Pfizer Japan Inc. Rishu Inoue has received lecture fees from Santen Pharmaceutical Co., Ltd. Tairo Kimura has received lecture fees from Santen Pharmaceutical Co., Ltd, Alcon Japan Ltd, Otsuka Pharmaceutical Co., Ltd, Senju Pharmaceutical Co., Ltd, KOWA Pharmaceutical Co., Ltd, and Carl Zeiss Co., Ltd, ROHTO Pharmaceutical Co., Ltd, and CREWT Medical Systems, Inc. Hirotaka Suzumuza has received lecture fees from Santen Pharmaceutical Co., Ltd, Alcon Japan Ltd, Senju Pharmaceutical Co., Ltd, KOWA Pharmaceutical Co., Ltd, and Kowa Company Ltd. Tomihiko Tanino has received fees for expert testimony from KOWA Pharmaceutical Co., Ltd, lecture fees from Alcon Japan Ltd, Senju Pharmaceutical Co., Ltd, KOWA Pharmaceutical Co., Ltd, Ellex, Inc. and Pfizer Japan Inc. Yoshio Yamazaki has received lecture fees from Alcon Japan Ltd, Santen Pharmaceutical Co., Ltd, Pfizer Japan Inc., Otsuka Pharmaceutical Co., Ltd, Senju Pharmaceutical Co., Ltd, and KOWA Pharmaceutical Co., Ltd. Keiji Yoshikawa has received fees for expert testimony from Santen Pharmaceutical Co., Ltd, and lecture fees from Alcon Japan Ltd, Santen Pharmaceutical Co., Ltd, Pfizer Japan Inc., Otsuka Pharmaceutical Co., Ltd, R-Tech Ueno Ltd, Kaken Pharmaceutical Co., Ltd, Senju Pharmaceutical Co., Ltd, KOWA Pharmaceutical Co., Ltd, and MSD KK. Masayuki Tatemichi has received consultant fee from Topcon Corporation.
Compliance with Ethics Guidelines
This study was approved by the Review Board of Jikei University School of Medicine [No. 17–196 (4617)]. Only patients who signed informed consent forms through the process according to the principles of the Helsinki declaration were enrolled in the study.
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Nakano, T., Inoue, R., Kimura, T. et al. Effects of Brinzolamide, a Topical Carbonic Anhydrase Inhibitor, on Corneal Endothelial Cells. Adv Ther 33, 1452–1459 (2016). https://doi.org/10.1007/s12325-016-0373-y
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DOI: https://doi.org/10.1007/s12325-016-0373-y