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Tian X, Peng X, Long X, Lin J, Zhang Y, Zhan L, Zhao G. Oxidized chondroitin sulfate eye drops ameliorate the prognosis of fungal keratitis with anti-inflammatory and antifungal effects. J Mater Chem B 2022; 10:7847-7861. [PMID: 36070420 DOI: 10.1039/d2tb00114d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fungal keratitis (FK) is a refractory ophthalmic disease that can result in vision impairment and even blindness due to the severe fungal invasiveness and excessive inflammatory response. Therefore, antifungal treatment combined with local immunosuppressive therapy is regarded as the most effective strategy to improve the clinical outcome of FK. Oxidized polysaccharides with aldehyde groups possess obvious inhibitory activity towards microorganisms. Herein, we use chondroitin sulfate (CS), a recognized anti-inflammatory biopolysaccharide, to prepare oxidized chondroitin sulfate (OCS) via sodium periodate (NaIO4) oxidation for the treatment of FK. The chemical structure of OCS was characterized by FTIR, 1H NMR, and XPS, revealing that the O-dihydroxy in the D-glucuronic acid unit of CS was selectively broken by NaIO4, forming active aldehyde groups. The introduction of aldehydes not only retains the anti-inflammatory activity but also confers OCS with antifungal property. In vitro antifungal experiments showed that OCS inhibits the growth, represses the biofilm formation and alters the membrane integrity of A. fumigatus. The toxicity of OCS was evaluated by cytotoxicity tests (CCK-8) and the Draize eye test in vitro and in vivo. qRT-PCR confirmed that OCS had similar anti-inflammatory activity as CS. In mice with A. fumigatus keratitis, OCS versus CS or PBS showed an excellent therapeutic effect, characterized by a lower corneal inflammation score, less fungal load, reduced neutrophil recruitment, and the downregulated expression of pro-inflammatory factors. Our findings demonstrate that OCS improves the prognosis of A. fumigatus keratitis in mice by inhibiting the growth of fungi, reducing the recruitment of neutrophils and inhibiting the inflammatory response. It provides innovative ideas for the development and application of OCS in medicine and biomaterials fields.
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Affiliation(s)
- Xue Tian
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
| | - Xudong Peng
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China. .,Department of Ophthalmology, University of Washington, Seattle, WA 98104, USA
| | - Xiaojing Long
- State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, Shandong Province, China
| | - Jing Lin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
| | - Yingxue Zhang
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School of Medicine, Detroit, Michigan 40201, USA
| | - Lu Zhan
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
| | - Guiqiu Zhao
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
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Yadav M, Schiavone N, Guzman-Aranguez A, Giansanti F, Papucci L, Perez de Lara MJ, Singh M, Kaur IP. Atorvastatin-loaded solid lipid nanoparticles as eye drops: proposed treatment option for age-related macular degeneration (AMD). Drug Deliv Transl Res 2021; 10:919-944. [PMID: 32270439 PMCID: PMC7223242 DOI: 10.1007/s13346-020-00733-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Statins, widely prescribed for cardiovascular diseases, are also being eyed for management of age-related macular degeneration (AMD). Poor bioavailability and blood-aqueous barrier may however limit significant ocular concentration of statins following oral administration. We for the first time propose and investigate local application of atorvastatin (ATS; representative statin) loaded into solid lipid nanoparticles (SLNs), as self-administrable eye drops. Insolubility, instability, and high molecular weight > 500 of ATS, and ensuring that SLNs reach posterior eye were the challenges to be met. ATS-SLNs, developed (2339/DEL/2014) using suitable components, quality-by-design (QBD) approach, and scalable hot high-pressure homogenization, were characterized and evaluated comprehensively for ocular suitability. ATS-SLNs were 8 and 12 times more bioavailable (AUC) in aqueous and vitreous humor, respectively, than free ATS. Three-tier (in vitro, ex vivo, and in vivo) ocular safety, higher corneal flux (2.5-fold), and improved stability (13.62 times) including photostability of ATS on incorporation in ATS-SLNs were established. Autoclavability and aqueous nature are the other highlights of ATS-SLNs. Presence of intact fluorescein-labeled SLNs (F-SLNs) in internal eye tissues post–in vivo application as eye drops provides direct evidence of successful delivery. Perinuclear fluorescence in ARPE-19 cells confirms the effective uptake of F-SLNs. Prolonged residence, up to 7 h, was attributed to the mucus-penetrating nature of ATS-SLNs. Graphical abstract ![]()
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Affiliation(s)
- Monika Yadav
- Department of Pharmaceutics, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Nicola Schiavone
- Department of Experimental and Clinical Biomedical Sciences, Section of Experimental Pathology and Oncology, Viale Morgagni 50, 50134, Florence, Italy
| | - Ana Guzman-Aranguez
- Facultad de Optica y Optometria, Dpto. Bioquimica y Biologia Molecular IV, Universidad Complutense de Madrid, C/Arcos de Jalon 118, 28037, Madrid, Spain
| | - Fabrizio Giansanti
- Department of Experimental and Clinical Biomedical Sciences, Section of Experimental Pathology and Oncology, Viale Morgagni 50, 50134, Florence, Italy
| | - Laura Papucci
- Department of Experimental and Clinical Biomedical Sciences, Section of Experimental Pathology and Oncology, Viale Morgagni 50, 50134, Florence, Italy
| | - Maria J Perez de Lara
- Facultad de Optica y Optometria, Dpto. Bioquimica y Biologia Molecular IV, Universidad Complutense de Madrid, C/Arcos de Jalon 118, 28037, Madrid, Spain
| | - Mandeep Singh
- Department of Pharmaceutics, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Indu Pal Kaur
- Department of Pharmaceutics, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India.
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Gade SK, Nirmal J, Garg P, Venuganti VVK. Corneal delivery of moxifloxacin and dexamethasone combination using drug-eluting mucoadhesive contact lens to treat ocular infections. Int J Pharm 2020; 591:120023. [PMID: 33127488 DOI: 10.1016/j.ijpharm.2020.120023] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/20/2020] [Accepted: 10/23/2020] [Indexed: 11/18/2022]
Abstract
The important causes of loss of vision are ocular infections, including keratitis and conjunctivitis. Attaining an adequate concentration of topically applied antibiotics to prevent or treat infections within the cornea is challenging. The study aimed to design and develop a drug-eluting polymeric contact lens for the effective delivery of moxifloxacin (MF) and dexamethasone (DM). The polymeric contact lens was prepared using chitosan, glycerol, and polyethylene glycol. MF and DM were loaded into the contact lens, both separately and in combination. The MF and DM loaded contact lenses were characterized for thickness, swelling index, surface topography, and mucoadhesion strength. Furthermore, studies were performed to understand the in vitro drug release behavior, ex vivo corneal permeation, and in vitro and in vivo antimicrobial activity. The drug-loaded contact lens was compared with the standard drug solutions. The physical characteristics of the polymeric contact lens were similar to the commercially available contact lens. Compared to the topically applied standard drug solutions, the drug-loaded contact lens showed significantly (p < 0.05) greater corneal drug distribution after 24 h incubation. In vitro and in vivo antimicrobial activity of the MF loaded contact lens was superior to the standard drug solution. In vivo drug distribution studies showed greater tissue concentration of MF in cornea, sclera, and aqueous humor with contact lens application compared with drug solutions. Overall, the polymeric contact lens was efficient in delivering MF and DM at required therapeutic concentrations. The findings from the present study show that drug-eluting contact lenses could be used in post-operative conditions to prevent ocular infections.
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Affiliation(s)
- Sudeep Kumar Gade
- Department of Pharmacy, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, Telangana, India; Tej Kohli Cornea Centre, L. V. Prasad Eye Institute, Hyderabad 500034, Telangana, India
| | - Jayabalan Nirmal
- Department of Pharmacy, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, Telangana, India
| | - Prashant Garg
- Tej Kohli Cornea Centre, L. V. Prasad Eye Institute, Hyderabad 500034, Telangana, India.
| | - Venkata Vamsi Krishna Venuganti
- Department of Pharmacy, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, Telangana, India.
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Anonye BO, Nweke V, Furner-Pardoe J, Gabrilska R, Rafiq A, Ukachukwu F, Bruce J, Lee C, Unnikrishnan M, Rumbaugh KP, Snyder LAS, Harrison F. The safety profile of Bald's eyesalve for the treatment of bacterial infections. Sci Rep 2020; 10:17513. [PMID: 33060666 PMCID: PMC7562736 DOI: 10.1038/s41598-020-74242-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/24/2020] [Indexed: 11/09/2022] Open
Abstract
The rise in antimicrobial resistance has prompted the development of alternatives to combat bacterial infections. Bald's eyesalve, a remedy used in the Early Medieval period, has previously been shown to have efficacy against Staphylococcus aureus in in vitro and in vivo models of chronic wounds. However, the safety profile of Bald's eyesalve has not yet been demonstrated, and this is vital before testing in humans. Here, we determined the safety potential of Bald's eyesalve using in vitro, ex vivo, and in vivo models representative of skin or eye infections. We also confirmed that Bald's eyesalve is active against an important eye pathogen, Neisseria gonorrhoeae. Low levels of cytotoxicity were observed in eyesalve-treated cell lines representative of skin and immune cells. Results from a bovine corneal opacity and permeability test demonstrated slight irritation to the cornea that resolved within 10 min. The slug mucosal irritation assay revealed that a low level of mucus was secreted by slugs indicating moderate mucosal irritation. We obtained promising results from mouse wound closure experiments; no visible signs of irritation or inflammation were observed. Our results suggest that Bald's eyesalve could be tested further on human volunteers to assess safety for topical application against bacterial infections.
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Affiliation(s)
- Blessing O Anonye
- School of Life Sciences, University of Warwick, Coventry, UK. .,School of Medicine, University of Central Lancashire, Preston, PR1 2HE, UK.
| | - Valentine Nweke
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston upon Thames, UK
| | - Jessica Furner-Pardoe
- School of Life Sciences, University of Warwick, Coventry, UK.,Warwick Medical School, University of Warwick, Coventry, UK
| | - Rebecca Gabrilska
- Department of Surgery, Texas Tech University Health Sciences Center School of Medicine, Texas, USA
| | - Afshan Rafiq
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston upon Thames, UK
| | - Faith Ukachukwu
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston upon Thames, UK
| | - Julie Bruce
- Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, UK
| | - Christina Lee
- School of English and Centre for the Study of the Viking Age, University of Nottingham, Nottingham, UK
| | - Meera Unnikrishnan
- Microbiology and Infection Unit, Warwick Medical School, University of Warwick, Coventry, UK
| | - Kendra P Rumbaugh
- Department of Surgery, Texas Tech University Health Sciences Center School of Medicine, Texas, USA
| | - Lori A S Snyder
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston upon Thames, UK
| | - Freya Harrison
- School of Life Sciences, University of Warwick, Coventry, UK
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Preparation and Evaluation of Cubosomes/Cubosomal Gels for Ocular Delivery of Beclomethasone Dipropionate for Management of Uveitis. Pharm Res 2020; 37:198. [PMID: 32968868 DOI: 10.1007/s11095-020-02857-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 06/10/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE Topical corticosteroids administration is commonly used for management of various ocular conditions especially those affecting the anterior segment of the eye. Poor solubility and limited pre-corneal residence time result in insufficient drug penetration to the outer (cornea and conjunctival-scleral) coats of the eye. This study aimed to prepare and evaluate cubosomes for prolonging residence time and enhancing ocular bioavailability of BDP. METHODS GMO-cubosomes were prepared using the top-down technique. Two stabilizers were investigated: poloxamer 407 and solulan C24. Particle size, EE %, polarized-light microscopy, TEM, in vitro release, transcorneal permeation, BCOP, histopathology and in vivo evaluation for treatment of uveitis in a rabbits' model were studied. RESULTS The prepared cubosomes were of nano-sizes (100 nm - 278 nm); EE% was around 94%. The cubosomes were confirmed by visualizing the "Maltese crosses" textures. Transcorneal permeation was significantly (p < 0.05) improved, compared to BDP-suspension (the control formulation). The optimized cubosomes F1P was incorporated in CMC gel (Cubo-gel). The prepared Cubo-gel formulations showed better rheological characteristics and high ocular tolerability. Superior anti-inflammatory properties were recorded for the Cubo-gel for treatment of endotoxin-induced uveitis in the rabbit model when compared to the control BDP-suspension. CONCLUSIONS Transcorneal permeation parameters Papp and flux and AUC0-10h markedly enhanced by up to 4-, 5.8-and 5.5-fold respectively, compared to the control BDP-suspension formulation. This study suggested that cubosomes/Cubo-gel could be an auspicious ocular delivery system for BDP that was able to effectively treat uveitis (a disease of the posterior segment of the eye).
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Zhang J, Liu Z, Tao C, Lin X, Zhang M, Zeng L, Chen X, Song H. Cationic nanoemulsions with prolonged retention time as promising carriers for ophthalmic delivery of tacrolimus. Eur J Pharm Sci 2020; 144:105229. [PMID: 31958581 DOI: 10.1016/j.ejps.2020.105229] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 01/07/2020] [Accepted: 01/16/2020] [Indexed: 12/11/2022]
Abstract
Tacrolimus, also known as FK506, is a first-line drug for the topical treatment of immune-mediated inflammatory anterior ocular diseases (IIAODs). However, due to its limited water solubility, hydrophobic nature and relatively high molecular weight, topical application of FK506 features poor bioavailability. Numbers of formulations have been attempted to enhance the erratic bioavailability of FK506 through various techniques. But until now, none of them could satisfy the clinical needs completely. Here, a novel formulation of FK506, FK506-loaded cationic nanoemulsions (FK506 CNE), was developed to prolong the precorneal residence time of FK506, thereby enhancing the bioavailability of FK506 for IIAODs therapy. FK506 CNE was prepared by high-pressure homogenization, and its composition was screened and optimized by single-factor experiments. The FK506 CNE showed spherical morphology with a mean diameter of 178.8 ± 2.7 nm and a zeta potential of +25.6 ± 0.6 mV. Results from in vivo gamma scintigraphy studies proved that the precorneal residence time of FK506 CNE was significantly increased, compared with FK506-loaded neutral nanoemulsions (FK506 NE) and saline. The data of aqueous humor pharmacokinetic study in rabbits showed that the relative bioavailability of FK506 CNE was 1.68-fold and 1.77-fold of FK506 NE and the marketed FK506 eye drops (Talymus®), respectively. Finally, hematoxylin and eosin staining images and in vitro cytotoxicity data confirmed the safety of the FK506 CNE. Taking all these into consideration, we propose that FK506 CNE is a promising topical ophthalmic nanoformulation for the management of IIAODs.
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Affiliation(s)
- Jialiang Zhang
- Department of Pharmacy, Dong Fang Hospital (900 Hospital of the Joint Logistics Team), School of Medicine, Xiamen University, Fuzhou 350025, PR China
| | - Zhihong Liu
- Department of Pharmacy, Dong Fang Hospital (900 Hospital of the Joint Logistics Team), School of Medicine, Xiamen University, Fuzhou 350025, PR China
| | - Chun Tao
- Department of Pharmacy, Dong Fang Hospital (900 Hospital of the Joint Logistics Team), School of Medicine, Xiamen University, Fuzhou 350025, PR China
| | - Xin Lin
- Department of Pharmacy, Dong Fang Hospital (900 Hospital of the Joint Logistics Team), School of Medicine, Xiamen University, Fuzhou 350025, PR China
| | - Minxin Zhang
- Department of Pharmacy, Dong Fang Hospital (900 Hospital of the Joint Logistics Team), School of Medicine, Xiamen University, Fuzhou 350025, PR China
| | - Lingjun Zeng
- Department of Pharmacy, Dong Fang Hospital (900 Hospital of the Joint Logistics Team), School of Medicine, Xiamen University, Fuzhou 350025, PR China
| | - Xu Chen
- Department of Pharmacy, Dong Fang Hospital (900 Hospital of the Joint Logistics Team), School of Medicine, Xiamen University, Fuzhou 350025, PR China
| | - Hongtao Song
- Department of Pharmacy, Dong Fang Hospital (900 Hospital of the Joint Logistics Team), School of Medicine, Xiamen University, Fuzhou 350025, PR China.
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7
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Yoon CH, Park JW, Ryu JS, Kim MK, Oh JY. Corneal Toxicity of Topical Tacrolimus Ointment in Mice with Corneal Epithelial Injury. J Ocul Pharmacol Ther 2018; 34:685-691. [PMID: 30222497 DOI: 10.1089/jop.2018.0054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Purpose: To investigate the effect of tacrolimus ointment on corneal epithelium. Methods: Eight-week-old male BALB/c mice were divided into 3 groups. In group 1, no injury was made. In group 2, the central 2-mm corneal epithelium was scraped off. In group 3, the whole corneal and limbal epithelium was removed after absolute ethanol application. In each group, the corneas were observed and treated daily with 0.03% or 0.1% tacrolimus ointment (Protopic®). The viability of cultivated human corneal epithelial cells was also examined after 24-h incubation with various concentrations of tacrolimus. Results: Tacrolimus ointment significantly delayed the epithelial healing in corneas with epithelial injuries (groups 2 and 3) in dose- and frequency-dependent manners, whereas it did not have any effects on uninjured corneas (group 1). The proportion of terminal deoxynucleotidyl transferase-mediated nick end labeling-positive cells and mRNA levels of inflammatory cytokines were higher in tacrolimus-treated corneas, compared with controls. Tacrolimus did not directly reduce the viability of corneal epithelial cells in culture. Conclusions: Topical application of tacrolimus ointment onto the ocular surface induced toxicity in the cornea with epithelial defects through the impairment of epithelial healing and induction of apoptosis.
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Affiliation(s)
- Chang Ho Yoon
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
- Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Jong Woo Park
- Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Jin Suk Ryu
- Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
- Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Joo Youn Oh
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
- Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
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Moustafa MA, El-Refaie WM, Elnaggar YSR, Abdallah OY. Gel in core carbosomes as novel ophthalmic vehicles with enhanced corneal permeation and residence. Int J Pharm 2018; 546:166-175. [PMID: 29778824 DOI: 10.1016/j.ijpharm.2018.05.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 05/12/2018] [Accepted: 05/16/2018] [Indexed: 12/20/2022]
Abstract
Carbopol is a good bio-adhesive polymer that increases the residence time in the eye. However, the effect of blinking and lacrimation still reduce the amount of polymer and the incorporated drug available for bioadhesion. Gel-core liposomes are advanced systems offering benefits making it a good tool for improved ocular drug delivery and residence time. Incorporation of carbopol in gel-core liposomes and their potential in ocular delivery have not so far been investigated. Fluconazole (FLZ) was selected as a challenging important ocular antifungal suffering from poor corneal permeation and short residence time. In this study, gel-core carbosomes have been elaborated as novel carbopol-based ophthalmic vehicles to solve ocular delivery obstacles of FLZ and to sustain its effect. Full in vitro appraisal was performed considering gel-core structure, entrapment efficiency, particle size and stability of the vesicles as quality attributes. Structure elucidation of the nanocarrier was performed using optical, polarizing and transmission electron microscopy before and after Triton-X100 addition. Ex-vivo ocular permeation and in vivo performance were investigated on male albino rabbits. Optimized formulation (CBS5) showed gel-core structure, nanosize (339.00 ± 5.50 nm) and not defined before (62.00% ± 1.73) entrapment efficiency. Cumulative amount of CBS5 permeated ex-vivo after 6 h, was 2.43 and 3.43 folds higher than that of conventional liposomes and FLZ suspension, respectively. In-vivo corneal permeation of CBS5 showed significantly higher AUC0-24 h (487.12 ± 74.80) compared to that of FLZ suspension (204.34 ± 7.46) with longer residence time in the eye lasts for more than 18 h. In conclusion, novel gel-core carbosomes could successfully be used as a promising delivery system for chronic ocular diseases.
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Affiliation(s)
- Mona A Moustafa
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Pharos University in Alexandria, Egypt
| | - Wessam M El-Refaie
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Pharos University in Alexandria, Egypt.
| | - Yosra S R Elnaggar
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Pharos University in Alexandria, Egypt; Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
| | - Ossama Y Abdallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
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Luaces-Rodríguez A, Touriño-Peralba R, Alonso-Rodríguez I, García-Otero X, González-Barcia M, Rodríguez-Ares MT, Martínez-Pérez L, Aguiar P, Gómez-Lado N, Silva-Rodríguez J, Herranz M, Ruibal-Morell Á, Lamas MJ, Otero-Espinar FJ, Fernández-Ferreiro A. Preclinical characterization and clinical evaluation of tacrolimus eye drops. Eur J Pharm Sci 2018; 120:152-161. [PMID: 29705214 DOI: 10.1016/j.ejps.2018.04.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 04/02/2018] [Accepted: 04/24/2018] [Indexed: 12/28/2022]
Abstract
Severe allergic ocular diseases as atopic keratoconjunctivitis can induce corneal damage due to inflammatory substances released from giant papillae. Tacrolimus eye drops are one of the current therapeutic alternatives for its treatment. This work is aimed at developing and characterizing a 0.03% tacrolimus ophthalmic formulation, which was introduced in three types of vehicles (BBS, PVA and Hyaluronic Acid). For this, we have performed in vitro (stability studies) and in vivo assays (corneal permanence time measured directly by Positron Emission Tomography) of three potential formulations. Next, the best formulation was selected, and its toxicological profile and clinical effectiveness have been evaluated. The biopermanence studies (direct measurements and PET/CT) showed that the formulations with PVA and Hyaluronic Acid present more retention time on the ocular surface of rats than PBS. From the stability study, we have determined that tacrolimus with PVA in cold storage is the best option. Tacrolimus with PVA has shown lower cytotoxicity than cyclosporine at early times. On the other hand, the pilot study performed has shown significant improvements in patients, with no noticeable adverse reactions. Based on stability, biopermanence, safety and clinical effectiveness studies, we concluded that tacrolimus-PVA eye drops are a suitable candidate for its clinical application in inflammatory ophthalmology diseases.
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Affiliation(s)
- Andrea Luaces-Rodríguez
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology and Industrial Pharmacy Institute, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Rosario Touriño-Peralba
- Ophthalmology Department, University Clinical Hospital Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - Iria Alonso-Rodríguez
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology and Industrial Pharmacy Institute, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Xurxo García-Otero
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology and Industrial Pharmacy Institute, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Miguel González-Barcia
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology and Industrial Pharmacy Institute, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain; Pharmacy Department, University Clinical Hospital Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - María Teresa Rodríguez-Ares
- Ophthalmology Department, University Clinical Hospital Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - Laura Martínez-Pérez
- Ophthalmology Department, University Clinical Hospital Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - Pablo Aguiar
- Molecular Imaging Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Noemí Gómez-Lado
- Molecular Imaging Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Jesús Silva-Rodríguez
- Molecular Imaging Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Michel Herranz
- Molecular Imaging Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Álvaro Ruibal-Morell
- Molecular Imaging Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - María Jesús Lamas
- Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain; Pharmacy Department, University Clinical Hospital Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - Francisco J Otero-Espinar
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology and Industrial Pharmacy Institute, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain.
| | - Anxo Fernández-Ferreiro
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology and Industrial Pharmacy Institute, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain; Pharmacy Department, University Clinical Hospital Santiago de Compostela (SERGAS), Santiago de Compostela, Spain.
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10
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Uysal E, Dokur M. Comparison of effects of the tacrolimus and cyclosporine A on the colon anastomosis recovery of rats. Ann Surg Treat Res 2017; 92:402-410. [PMID: 28580344 PMCID: PMC5453872 DOI: 10.4174/astr.2017.92.6.402] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/16/2016] [Accepted: 01/16/2017] [Indexed: 12/24/2022] Open
Abstract
Purpose This study aims to examine and compare the effects of immunosuppressant cyclosporine A (CsA) and tacrolimus (TAC) on colon anastomosis recovery. Methods Forty rats were randomly divided into 4 groups. The 4 groups were determined as follows: control group; sham group, given %0.09 NaCl; TAC group, given 0.5 mg/kg/day tacrolimus; and CsA group, given 5 mg/kg/day CsA. A 6-cm midabdomen incision was performed on the rats. An incision of all layers on the right colon was performed. Then anastomosis was undertaken. Laparotomy was performed on the seventh day postoperation. The colon bursting pressures were evaluated, histopathological examinations were undertaken, and E-cadherin expression and tissue hydroxyproline levels were evaluated. Results Statistically significant differences were observed among bursting pressures of the groups (P < 0.001). The value was significantly low in TAC and CsA groups when compared to control and sham groups (P < 0.05). The tissue hydroxyproline levels were significantly low in TAC group compared to control group (P = 0.03). Fibroblast density and neovascularization were significantly greater in the control group compared to the TAC group (P < 0.05). Levels of collagen had decreased significantly in TAC group compared to other groups (P < 0.05). Conclusion Our study showed that TAC may have a negative effect of colon anastomosis recovery. The lowest anastomosis bursting pressure was detected in TAC group. Also, collagen, hydroxyproline, fibroblast, neovascularization and E-Cadherin levels were comparatively lower in TAC group. CsA did not cause any significant changes to tissue hydroxyproline, collagen, fibroblast, and E-Cadherin levels.
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Affiliation(s)
- Erdal Uysal
- Department of General Surgery, Sanko University School of Medicine, Gaziantep, Turkey
| | - Mehmet Dokur
- Department of Emergency, Necip Fazil City Hospital, Kahramanmaras, Turkey
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