Abstract
While drug-loaded microparticles (MPs) can serve as drug reservoirs for sustained drug release and therapeutic effects, needle clogging by MPs poses a challenge for ocular drug delivery via injection. Two polymers commonly used in ophthalmic procedures—hyaluronic acid (HA) and methylcellulose (MC)—have been tested for their applicability for ocular injections. HA and MC were physically blended with sunitinib malate (SUN)–loaded PLGA MPs for subconjunctival (SCT) injection into rat eyes. The HA and MC viscous solutions facilitated injection through fine-gauged needles due to their shear-thinning properties as shown by rheological characterizations. The diffusion barrier presented by HA and MC reduced burst drug release and extended overall release from MPs. The significant level of MP retention in the conjunctiva tissue post-operation confirmed the minimal leakage of MPs following injection. The safety of HA and MC for ocular applications was demonstrated histologically.
Similar content being viewed by others
References
Bahar I, Kaiserman I, McAllum P, Rootman D, Slomovic A. Subconjunctival bevacizumab injection for corneal neovascularization. Cornea. 2008;27(2):142–7.
Tan JC, Mann S, Coroneo MT. Successful treatment of conjunctival lymphangiectasia with subconjunctival injection of bevacizumab. Cornea. 2016;35(10):1375–7.
Xu Q, Tan X, Zhang Y, Jie Y, Pan Z. Subconjunctival injection of in vitro transforming growth factor-beta-induced regulatory T cells prolongs allogeneic corneal graft survival in mice. Int J Clin Exp Med. 2015;8(11):20271–8.
Yoshida J, Wicks RT, Zambrano AI, Tyler BM, Javaherian K, Grossman R, et al. Inhibition of corneal neovascularization by subconjunctival injection of Fc-endostatin, a novel inhibitor of angiogenesis. J Ophthalmol. 2015;2015:137136.
Wang B, Tang Y, Oh Y, Lamb NW, Xia S, Ding Z, et al. Controlled release of dexamethasone sodium phosphate with biodegradable nanoparticles for preventing experimental corneal neovascularization. Nanomedicine. 2019;17:119–23.
Luo L, Yang J, Oh Y, Hartsock MJ, Xia S, Kim YC, et al. Controlled release of corticosteroid with biodegradable nanoparticles for treating experimental autoimmune uveitis. J Control Release. 2019;296:68–80.
Gaudana R, Ananthula HK, Parenky A, Mitra AK. Ocular drug delivery. AAPS J. 2010;12(3):348–60.
Xu Q, Kambhampati SP, Kannan RM. Nanotechnology approaches for ocular drug delivery. Middle East Afr J Ophthalmol. 2013;20(1):26–37.
Lux A, Maier S, Dinslage S, Suverkrup R, Diestelhorst M. A comparative bioavailability study of three conventional eye drops versus a single lyophilisate. Br J Ophthalmol. 2003;87(4):436–40.
Patton TF, Francoeur M. Ocular bioavailability and systemic loss of topically applied ophthalmic drugs. Am J Ophthalmol. 1978;85(2):225–9.
Kholdebarin R, Campbell RJ, Jin YP, Buys YM. Multicenter study of compliance and drop administration in glaucoma. Can J Ophthalmol. 2008;43(4):454–61.
Del Amo EM, Urtti A. Current and future ophthalmic drug delivery systems. A shift to the posterior segment. Drug Discov Today. 2008;13(3–4):135–43.
Kadam RS, Tyagi P, Edelhauser HF, Kompella UB. Influence of choroidal neovascularization and biodegradable polymeric particle size on transscleral sustained delivery of triamcinolone acetonide. Int J Pharm. 2012;434(1–2):140–7.
Pan Q, Xu Q, Boylan NJ, Lamb NW, Emmert DG, Yang JC, et al. Corticosteroid-loaded biodegradable nanoparticles for prevention of corneal allograft rejection in rats. J Control Release. 2015;201:32–40.
Patel A, Cholkar K, Agrahari V, Mitra AK. Ocular drug delivery systems: an overview. World J Pharmacol. 2013;2(2):47–64.
Rafiei F, Tabesh H, Farzad F. Sustained subconjunctival drug delivery systems: current trends and future perspectives. Int Ophthalmol. 2020;40:2385–401.
Shive MS, Anderson JM. Biodegradation and biocompatibility of PLA and PLGA microspheres. Adv Drug Deliv Rev. 1997;28(1):5–24.
Alipour S, Montaseri H, Tafaghodi M. Inhalable, large porous PLGA microparticles loaded with paclitaxel: preparation, in vitro and in vivo characterization. J Microencapsul. 2015;32(7):661–8.
Costa MP, Feitosa AC, Oliveira FC, Cavalcanti BC, da Silva EN, Dias GG, et al. Controlled release of nor-beta-lapachone by PLGA microparticles: a strategy for improving cytotoxicity against prostate cancer cells. Molecules. 2016;21(7):873.
Obayemi JD, Danyuo Y, Dozie-Nwachukwu S, Odusanya OS, Anuku N, Malatesta K, et al. PLGA-based microparticles loaded with bacterial-synthesized prodigiosin for anticancer drug release: effects of particle size on drug release kinetics and cell viability. Mater Sci Eng C Mater Biol Appl. 2016;66:51–65.
Kohane DS. Microparticles and nanoparticles for drug delivery. Biotechnol Bioeng. 2007;96(2):203–9.
Amrite AC, Ayalasomayajula SP, Cheruvu NP, Kompella UB. Single periocular injection of celecoxib-PLGA microparticles inhibits diabetes-induced elevations in retinal PGE2, VEGF, and vascular leakage. Invest Ophthalmol Vis Sci. 2006;47(3):1149–60.
Kompella UB, Bandi N, Ayalasomayajula SP. Subconjunctival nano- and microparticles sustain retinal delivery of budesonide, a corticosteroid capable of inhibiting VEGF expression. Invest Ophthalmol Vis Sci. 2003;44(3):1192–201.
Tarlan B, Kiratli H. Subconjunctival hemorrhage: risk factors and potential indicators. Clin Ophthalmol. 2013;7:1163–70.
Ballios BG, Cooke MJ, van der Kooy D, Shoichet MS. A hydrogel-based stem cell delivery system to treat retinal degenerative diseases. Biomaterials. 2010;31(9):2555–64.
Delplace V, Payne S, Shoichet M. Delivery strategies for treatment of age-related ocular diseases: from a biological understanding to biomaterial solutions. J Control Release. 2015;219:652–68.
Cronau H, Kankanala RR, Mauger T. Diagnosis and management of red eye in primary care. Am Fam Physician. 2010;81(2):137–44.
Reed DB, Mannis MJ, Hills JF, Johnson CA. Corneal epithelial healing after penetrating keratoplasty using topical Healon versus balanced salt solution. Ophthalmic Surg. 1987;18(7):525–8.
Tsujinaka H, Fu J, Shen J, Yu Y, Hafiz Z, Kays J, et al. Sustained treatment of retinal vascular diseases with self-aggregating sunitinib microparticles. Nat Commun. 2020;11(1):694.
Yang J, Luo L, Oh Y, Meng T, Chai G, Xia S, et al. Sunitinib malate-loaded biodegradable microspheres for the prevention of corneal neovascularization in rats. J Control Release. 2020;327:456–66.
Rosca ID, Watari F, Uo M. Microparticle formation and its mechanism in single and double emulsion solvent evaporation. J Control Release. 2004;99(2):271–80.
Benelli U. Systane lubricant eye drops in the management of ocular dryness. Clin Ophthalmol. 2011;5:783–90.
Shastri D, Patel L, Parikh R. Studies on in situ hydrogel: a smart way for safe and sustained ocular drug delivery. J Young Pharm. 2010;2(2):116–20.
Johansen S, Rask-Pedersen E, Prause JU. An ocular bioavailability comparison in rabbits of prednisolone acetate after repeated topical applications formulated as a high-viscosity gel and as an aqueous suspension. Acta Ophthalmol Scand. 1996;74(3):259–64.
Shimmura S, Goto E, Shimazaki J, Tsubota K. Viscosity-dependent fluid dynamics of eyedrops on the ocular surface. Am J Ophthalmol. 1998;125(3):386–8.
Burdick JA, Chung C, Jia X, Randolph MA, Langer R. Controlled degradation and mechanical behavior of photopolymerized hyaluronic acid networks. Biomacromolecules. 2005;6(1):386–91.
von Schantz L, Schagerlöf H, Karlsson EN, Ohlin M. Characterization of the substitution pattern of cellulose derivatives using carbohydrate-binding modules. BMC Biotechnol. 2014;14(1):1.
Acknowledgments
The authors are grateful to Kyung Min Park and Sharon Gerecht for offering help with rheometer operation, and thankful for Maria Jose Suarez for help with histology imaging.
Funding
Funding for this study was provided by National Institutes of Health (R01EY027827, P30-EY001765), the George and Lavinia Blick Research Fund, and the Johns Hopkins University Office of the Provost.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of Interest
The authors declare that they have no conflict of interest.
Additional information
Guest Editors: Qingguo Xu and Iok-Hou Pang
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Supplementary Information
ESM 1
(DOCX 1604 kb)
(MP4 3418 kb)
Rights and permissions
About this article
Cite this article
Xia, S., Ding, Z., Luo, L. et al. Shear-Thinning Viscous Materials for Subconjunctival Injection of Microparticles. AAPS PharmSciTech 22, 8 (2021). https://doi.org/10.1208/s12249-020-01877-9
Received:
Accepted:
Published:
DOI: https://doi.org/10.1208/s12249-020-01877-9