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Vincy CD, Tarika JDD, Sethuram M, Jenepha Mary SJ, Beaula TJ. Quantum Chemical Investigations on the Hydrogen-Bonded Interactions of Bioactive Molecule N 2-(4-Methoxysalicylidene) Arginine Hemihydrate. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2138923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- C. Dabora Vincy
- Department of Physics and Research Centre, Malankara Catholic College, Kaliyakkavilai, Tamilnadu, India
| | - J. D. Deephlin Tarika
- Department of Physics and Research Centre, Malankara Catholic College, Kaliyakkavilai, Tamilnadu, India
| | - M. Sethuram
- Department of Chemical Engineering, Sethu Institute of Technology, Pulloor, Tamilnadu, India
| | - S. J. Jenepha Mary
- Department of Physics, Holy Cross College (Autonomous), Nagercoil, Tamilnadu, India
| | - T. Joselin Beaula
- Department of Physics and Research Centre, Malankara Catholic College, Kaliyakkavilai, Tamilnadu, India
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2
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Conde Penedo A, Díaz Tomé V, Fernández Ferreiro A, González Barcia M, Otero Espinar FJ. Enhancement in corneal permeability of riboflavin using cyclodextrin derivates complexes as a previous step to transepithelial cross-linking. Eur J Pharm Biopharm 2021; 162:12-22. [PMID: 33667681 DOI: 10.1016/j.ejpb.2021.02.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 02/15/2021] [Accepted: 02/23/2021] [Indexed: 01/14/2023]
Abstract
Corneal cross-linking has been described as an effective treatment to slow the progression of keratoconus. The standard protocol entails corneal epithelial removal to allow the diffusion of riboflavin into the stroma. Although, de-epithelization can generate risks or complications that transepithelial cross-linking tries to solve or avoid. Different formulations were developed after verifying that hydroxypropyl-β-cyclodextrin (HPβCD) and sulfobuthylether-β-cyclodextrin (SBEβCD) in a 20% concentration, increased the solubility of practically insoluble in water drugs such as riboflavin from 0.12 mg/mL to 0.35 mg/mL and 0.29 mg/mL respectively. These values were higher when chitosan and arginine were added to the formulation, showing solubility of 0.78 mg/mL when HPβCD concentration was not modified. Ex vivo corneal permeability was measured after having kept in contact bovine corneas with intact epithelium for 5 h with the 0.1 mg/mL riboflavin solution, the formulations developed and a reproduced nanoemulsion from another work. Riboflavin's permeability was increased when cyclodextrins, chitosan, and arginine were part of the formulations, compared to the control drug solution. The best permeability coefficient was reached when riboflavin was combined with 40% (w/v) HPβCD, 0.5% (w/w) arginine, and 0.5% (w/w) chitosan. After having carried out toxicity studies as bovine corneal opacity and permeability (BCOP) and Heńs Egg Test - Chorioallantoic Membrane Test (HET-CAM) it was verified that both, the active ingredients and the excipients of the different formulations were not harmful without generating irritation, loss of transparency or corneal permeability alterations. The results show the great potential of the ocular developed solution for their use in transepithelial cross-linking for keratoconus treatment.
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Affiliation(s)
- Andrea Conde Penedo
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Santiago de Compostela, Spain; Paraquasil Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain
| | - Victoria Díaz Tomé
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Santiago de Compostela, Spain; Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain
| | - Anxo Fernández Ferreiro
- Pharmacy Department, University Clinical Hospital Santiago de Compostela, Santiago de Compostela, Spain; Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain.
| | - Miguel González Barcia
- Pharmacy Department, University Clinical Hospital Santiago de Compostela, Santiago de Compostela, Spain; Clinical Pharmacology Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain.
| | - Francisco J Otero Espinar
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Santiago de Compostela, Santiago de Compostela, Spain; Paraquasil Group, University Clinical Hospital, Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain.
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Moiseev RV, Morrison PWJ, Steele F, Khutoryanskiy VV. Penetration Enhancers in Ocular Drug Delivery. Pharmaceutics 2019; 11:E321. [PMID: 31324063 PMCID: PMC6681039 DOI: 10.3390/pharmaceutics11070321] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/01/2019] [Accepted: 07/03/2019] [Indexed: 12/12/2022] Open
Abstract
There are more than 100 recognized disorders of the eye. This makes the development of advanced ocular formulations an important topic in pharmaceutical science. One of the ways to improve drug delivery to the eye is the use of penetration enhancers. These are defined as compounds capable of enhancing drug permeability across ocular membranes. This review paper provides an overview of anatomical and physiological features of the eye and discusses some common ophthalmological conditions and permeability of ocular membranes. The review also presents the analysis of literature on the use of penetration-enhancing compounds (cyclodextrins, chelating agents, crown ethers, bile acids and bile salts, cell-penetrating peptides, and other amphiphilic compounds) in ocular drug delivery, describing their properties and modes of action.
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Affiliation(s)
- Roman V Moiseev
- Reading School of Pharmacy, University of Reading, Whiteknights, P.O. Box 224, Reading RG66AD, UK
| | - Peter W J Morrison
- Reading School of Pharmacy, University of Reading, Whiteknights, P.O. Box 224, Reading RG66AD, UK
| | - Fraser Steele
- MC2 Therapeutics, James House, Emlyn Lane, Leatherhead KT22 7EP, UK
| | - Vitaliy V Khutoryanskiy
- Reading School of Pharmacy, University of Reading, Whiteknights, P.O. Box 224, Reading RG66AD, UK.
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Lollo G, Gonzalez-Paredes A, Garcia-Fuentes M, Calvo P, Torres D, Alonso MJ. Polyarginine Nanocapsules as a Potential Oral Peptide Delivery Carrier. J Pharm Sci 2017; 106:611-618. [DOI: 10.1016/j.xphs.2016.09.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/19/2016] [Accepted: 09/12/2016] [Indexed: 02/05/2023]
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Sekijima H, Ehara J, Hanabata Y, Suzuki T, Kimura S, Lee VHL, Morimoto Y, Ueda H. Characterization of Ocular Iontophoretic Drug Transport of Ionic and Non-ionic Compounds in Isolated Rabbit Cornea and Conjunctiva. Biol Pharm Bull 2016; 39:959-68. [DOI: 10.1248/bpb.b15-00932] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hidehisa Sekijima
- Department of Hospital Pharmacy, Faculty of Pharmaceutical Sciences, Josai University
| | - Junya Ehara
- Department of Hospital Pharmacy, Faculty of Pharmaceutical Sciences, Josai University
| | - Yusuke Hanabata
- Department of Hospital Pharmacy, Faculty of Pharmaceutical Sciences, Josai University
| | - Takumi Suzuki
- Department of Hospital Pharmacy, Faculty of Pharmaceutical Sciences, Josai University
| | - Soichiro Kimura
- Department of Hospital Pharmacy, Faculty of Pharmaceutical Sciences, Josai University
| | | | | | - Hideo Ueda
- Department of Hospital Pharmacy, Faculty of Pharmaceutical Sciences, Josai University
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Pescina S, Govoni P, Antopolsky M, Murtomäki L, Padula C, Santi P, Nicoli S. Permeation of proteins, oligonucleotide and dextrans across ocular tissues: experimental studies and a literature update. J Pharm Sci 2015; 104:2190-202. [PMID: 25973792 DOI: 10.1002/jps.24465] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 04/02/2015] [Accepted: 04/02/2015] [Indexed: 12/15/2022]
Abstract
Proteins and oligonucleotides represent powerful tools for the treatment of several ocular diseases, affecting both anterior and posterior eye segments. Despite the potential of these compounds, their administration remains a challenge. The last years have seen a growing interest for the noninvasive administration of macromolecular drugs, but still there is only little information of their permeability across the different ocular barriers. The aim of this work was to evaluate the permeation of macromolecules of different size, shape and charge across porcine ocular tissues such as the isolated sclera, the choroid Bruch's membrane and the cornea, both intact and de-epitelialized. Permeants used were two proteins (albumin and cytochrome C), an oligonucleotide, two dextrans (4 and 40 kDa) and a monoclonal antibody (bevacizumab). Obtained data and its comparison with the literature highlight the difficulties in predicting the behavior of macromolecules based on their physicochemical properties, because the interplay between the charge, molecular radius and conformation prevent their analysis separately. However, the data can be of great help for a rough evaluation of the feasibility of a noninvasive administration and for building computational models to improve understanding of the interplay among static, dynamic and metabolic barriers in the delivery of macromolecules to the eye.
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Affiliation(s)
- Silvia Pescina
- Department of Pharmacy, University of Parma, Parma, 43124, Italy
| | - Paolo Govoni
- Department of Biomedical, Biotechnological and Translational Sciences, University of Parma, Parma, 43126, Italy
| | - Maxim Antopolsky
- Centre for Drug Research, University of Helsinki, Helsinki, FI-00014, Finland
| | - Lasse Murtomäki
- Department of Chemistry, Aalto University, Aalto, FI-00076, Finland
| | - Cristina Padula
- Department of Pharmacy, University of Parma, Parma, 43124, Italy
| | - Patrizia Santi
- Department of Pharmacy, University of Parma, Parma, 43124, Italy
| | - Sara Nicoli
- Department of Pharmacy, University of Parma, Parma, 43124, Italy
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Liu C, Tai L, Zhang W, Wei G, Pan W, Lu W. Penetratin, a potentially powerful absorption enhancer for noninvasive intraocular drug delivery. Mol Pharm 2014; 11:1218-27. [PMID: 24521351 DOI: 10.1021/mp400681n] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Intraocular drug delivery is extraordinarily hampered by the impermeability of defensive barriers of the eye. In this study, the ocular permeability of fluorophore-labeled cell-penetrating peptides (CPPs), including penetratin, TAT, low molecular weight protamine, and poly(arginine)8, was investigated based on multilevel evaluations. The human conjunctival epithelial cell (NHC) was exposed to various CPPs to determine the cytotoxicity and cellular uptake. Ex vivo studies with rabbit cornea were performed using side-by-side diffusion chambers to evaluate the apparent permeability coefficients and acute tissue tolerance of the CPP candidates. Among all examined CPPs, penetratin shows an outstanding cellular uptake, by increasing more than 16 and 25 times at low and high concentrations, compared to the control peptide poly(serine)8 respectively. Additionally, the permeability of penetratin across excised cornea is 87.5 times higher in comparison with poly(serine)8. More importantly, after instilled in the conjunctival sac of rat eyes, fluorophore-labeled penetratin displayed a rapid and wide distribution in both anterior and posterior segment of the eye, and could be observed in the corneal epithelium and retina lasting for at least 6 h. Interestingly, penetratin showed the lowest ocular cell and tissue toxicities among all examined CPPs. The high ocular permeability of penetratin could be attributed to its amphipathicity and spatial conformation determined by circular dichroism. Taken together, these data demonstrate that penetratin is potentially useful as an absorption enhancer for intraocular drug delivery.
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Affiliation(s)
- Chang Liu
- Key Laboratory of Smart Drug Delivery, Ministry of Education; Department of Pharmaceutics, School of Pharmacy, Fudan University , Shanghai 201203, China
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Uematsu M, Kumagami T, Shimoda K, Kusano M, Teshima M, To H, Kitahara T, Kitaoka T, Sasaki H. Polyoxyethylene Hydrogenated Castor Oil Modulates Benzalkonium Chloride Toxicity: Comparison of Acute Corneal Barrier Dysfunction Induced by Travoprost Z and Travoprost. J Ocul Pharmacol Ther 2011; 27:437-44. [DOI: 10.1089/jop.2010.0175] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Masafumi Uematsu
- Department of Ophthalmology and Visual Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Takeshi Kumagami
- Department of Ophthalmology and Visual Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kenichiro Shimoda
- Department of Hospital Pharmacy, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Mao Kusano
- Department of Ophthalmology and Visual Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Mugen Teshima
- Department of Hospital Pharmacy, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Hideto To
- Department of Hospital Pharmacy, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Takashi Kitahara
- Department of Hospital Pharmacy, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
| | - Takashi Kitaoka
- Department of Ophthalmology and Visual Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Hitoshi Sasaki
- Department of Hospital Pharmacy, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan
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Influence of Alkyl Chain Length of Benzalkonium Chloride on Acute Corneal Epithelial Toxicity. Cornea 2010; 29:1296-301. [DOI: 10.1097/ico.0b013e3181dc81b6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yu N, Xun Y, Jin D, Yang H, Hang T, Cui H. Effect of sperminated pullulans on drug permeation through isolated rabbit cornea and determination of ocular irritation. J Int Med Res 2010; 38:526-35. [PMID: 20515566 DOI: 10.1177/147323001003800215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to investigate the effect of two sperminated pullulans (SP) with a different number of amino groups (SP-L, amino group content 0.124 mmol/g polymer; and SP-H, amino group content 0.578 mmol/g polymer) on the permeation of drugs through isolated rabbit corneas. Determination of corneal hydration levels and Draize eye tests were performed to assess the safety of SP both in vitro and in vivo. For 0.2% (w/v) SP-L and 0.2% (w/v) SP-H, the enhancement ratios (ERs) with dexamethasone of 1.34 and 1.42, respectively, were not statistically significant. For ofloxacin, tobramycin and sodium fluorescein, the ERs with 0.2% SP-L were 1.37, 2.02 and 2.12, respectively, and with 0.2% SP-H the ERs were 1.84, 4.69 and 6.87, respectively; these ERs were all statistically significant. Enhancement increased with increasing amino group content of the SP. The improved transcorneal drug absorption via the paracellular route indicated opening of the tight junctions in the corneal epithelium. Irritation tests indicated that 0.2% SP-L and 0.2% SP-H did not damage the corneal tissues.
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Affiliation(s)
- N Yu
- Department of Ophthalmology, First Affiliated Hospital of Harbin Medical University, Harbin, China
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11
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Application of the Renkin function to characterize paracellular pathways in the nasal absorption of FITC-dextrans in rats. J Drug Deliv Sci Technol 2009. [DOI: 10.1016/s1773-2247(09)50068-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Zakutskiĭ AN, Chalisova NI, Subbotina TF. [Functional arginine-containing amino acid sequences in peptides and proteins]. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2008; 34:149-59. [PMID: 18522270 DOI: 10.1134/s1068162008020015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
L-arginine is a source of nitrogen oxide and plays a great role in a number of other biochemical processes. Functions and prospects for practical application of five groups of arginine-containing amino acid sequences and synthetic polyarginine sequences are considered. The physiological characteristics of well-known arginine-containing peptides, such as RGD peptides, kyotorphin, and tuftsin, are described in detail. The English version of the paper: Russian Journal of Bioorganic Chemistry, 2008, vol. 34, no. 2; see also http://www.maik.ru
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Di Colo G, Zambito Y, Zaino C. Polymeric Enhancers of Mucosal Epithelia Permeability: Synthesis, Transepithelial Penetration-Enhancing Properties, Mechanism of Action, Safety Issues. J Pharm Sci 2008; 97:1652-80. [PMID: 17828745 DOI: 10.1002/jps.21043] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Transmucosal drug administration across nasal, buccal, and ocular mucosae is noninvasive, eliminates hepatic first-pass metabolism and harsh environmental conditions, allows rapid onset, and further, mucosal surfaces are readily accessible. Generally, however, hydrophilic drugs, such as peptides and proteins, are poorly permeable across the epithelium, which results in insufficient bioavailability. Therefore, reversible modifications of epithelial barrier structure by permeation enhancers are required. Low molecular weight enhancers generally have physicochemical characteristics favoring their own absorption, whereas polymeric enhancers are not absorbed, and this minimizes the risk of systemic toxicity. The above considerations have warranted the present survey of the studies on polymeric transmucosal penetration-enhancers that have appeared in the literature during the last decade. Studies on intestinal permeation enhancers are also reviewed as they give information on the mechanism of action and safety of polymers. The synthesis and characterization of polymers, their effectiveness in enhancing the absorption of different drugs across different epithelium types, their mechanism of action and structure-efficacy relationship, and the relevant safety issues are reviewed. The active polymers are classified into: polycations (chitosan and its quaternary ammonium derivatives, poly-L-arginine (poly-L-Arg), aminated gelatin), polyanions (N-carboxymethyl chitosan, poly(acrylic acid)), and thiolated polymers (carboxymethyl cellulose-cysteine, polycarbophil (PCP)-cysteine, chitosan-thiobutylamidine, chitosan-thioglycolic acid, chitosan-glutathione conjugates).
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Affiliation(s)
- Giacomo Di Colo
- Department of Bioorganic Chemistry and Biopharmaceutics, University of Pisa, Via Bonanno 33, 56126 Pisa, Italy.
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Nemoto E, Ueda H, Akimoto M, Natsume H, Morimoto Y. Ability of Poly- L-arginine to Enhance Drug Absorption into Aqueous Humor and Vitreous Body after Instillation in Rabbits. Biol Pharm Bull 2007; 30:1768-72. [PMID: 17827737 DOI: 10.1248/bpb.30.1768] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effect of poly-L-arginine with a molecular weight of 35.5 kDa (PLA) on the ocular absorption of hydrophilic molecules after instillation was examined in rabbits in vivo. FITC-labeled dextran (3.8 kDa, FD-4) and pyridoxamine were used as model hyprophilic molecules for absorption. The potential toxicity of PLA was evaluated by microscopic observation of the cornea, production of TNF-alpha, and the thickness of the corneal epithelia and stroma. The concentration of pyridoxamine and FD-4 in aqueous humor 30 min after a single instillation of a solution of PLA was 29- and 16-fold higher than that without PLA, respectively, but the drug concentrations were not determined in the vitreous body. Repetitive instillation of PLA every 30 min for 150 min achieved 31.1- and 13.3-fold increases in pyridoxamine and FD-4 in aqueous humor, respectively. Furthermore, significant amounts of pyridoxamine and FD-4 were detected in the vitreous body after the repetitive instillation of PLA, even although very little of these drugs was detected in the vitreous body in the control eye without PLA. On the other hand, repetitive instillation of PLA did not induce any alteration of corneal epithelial and stromal thickness, production of TNF-alpha, and disruption of the epithelial and stromal morphologies and neutrophil infiltration. Our findings suggest that PLA may be useful in promoting drug delivery of hydrophilic drugs to the ocular tissues without producing any significant corneal damage and inflammation.
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Affiliation(s)
- Eiichi Nemoto
- Faculty of Pharmaceutical Sciences, Josai University, Sakado, Saitama 350-0295, Japan
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