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Wang Y, Li D, Li X, Ren D, Zhang W, Shu G, Lin J, Li H, Xu F, Peng G, Fu H. In-situ gel injection of poloxamer-based metamizole provides long-acting antipyretic effects. Drug Deliv Transl Res 2024:10.1007/s13346-024-01651-5. [PMID: 38896348 DOI: 10.1007/s13346-024-01651-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2024] [Indexed: 06/21/2024]
Abstract
Metamizole easily decomposes in the body and has a short action time and low bioavailability. Hence, frequent injection administrations are needed to maintain its plasma concentration. This study aimed to design and develop an in-situ gel based on poloxamer 407 and 188 to assess its long-acting antipyretic effects. The in-situ gel-forming systep00m with optimum sol-gel transition temperature of 35.9 °C to 36.3 °C could be formed using a combination of P407 at a ratio of 21-23% (w/v) and P188 at a ratio of 2-4% (w/v). In vitro erosion test showed that the in-situ gel's erosion curve and the metamizole release rate both reached about 90% at 6 h, revealing a good linear relationship between the in-situ gel erosion and the drug release. In vitro release test with dialysis tube showed that the release of metamizole from the in-situ gel was remarkably slower than that from the metamizole solution. Approximately 85% of metamizole was released in the dialysis tube within 7 h, implying a good sustained release effect. Pharmacodynamic study showed that the in-situ gel injection extended the action time of metamizole relative to that when using the metamizole solution. Pharmacokinetic study revealed that the in-situ gel significantly increased the blood serum half-life and area under the curve), contributing to a sustained release and improved bioavailability. This study demonstrated that in-situ gel injection could prolong the action of metamizole in the body to reduce the number of administration times and has good clinical application.
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Affiliation(s)
- Yueli Wang
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Dongbo Li
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiaojuan Li
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Dandan Ren
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Wei Zhang
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Gang Shu
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Juchun Lin
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Haohuan Li
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Funeng Xu
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Guangneng Peng
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Hualin Fu
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, China.
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Mfoafo K, Omidi Y, Omidian H. Thermoresponsive mucoadhesive hybrid gels in advanced drug delivery systems. Int J Pharm 2023; 636:122799. [PMID: 36914019 DOI: 10.1016/j.ijpharm.2023.122799] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 02/22/2023] [Accepted: 03/01/2023] [Indexed: 03/13/2023]
Abstract
Thermoresponsive polymers have seen extensive use in the development of stimuli-responsive drug formulations for oral, buccal, nasal, ocular, topical, rectal, parenteral, and vaginal routes of administration. Despite their great potential, their use has been limited by various obstacles, such as undesirable high polymer concentration, wide gelation temperature, low gel strength, poor mucoadhesiveness, and short retention. Mucoadhesive polymers have been suggested to improve the mucoadhesive features of thermoresponsive gels, leading to increased drug bioavailability and efficacy. This article highlights the use of in-situ thermoresponsive mucoadhesive hydrogel blends or hybrids that have been developed and assessed in various routes of administration.
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Affiliation(s)
- Kwadwo Mfoafo
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Yadollah Omidi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Hossein Omidian
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA.
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Afzaal H, Shahiq-uz-Zaman, Saeed A, Hamdani SDA, Raza A, Gul A, Babar MM, Rajadas J. Development of mucoadhesive adapalene gel for biotherapeutic delivery to vaginal tissue. Front Pharmacol 2022; 13:1017549. [PMID: 36249754 PMCID: PMC9557122 DOI: 10.3389/fphar.2022.1017549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/07/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose: Alternate formulation strategies need to be devised for improving the absorption and bioavailability of drug molecules administered through the intravaginal route. Enhancing the coating of vaginal mucosa can aid the achievement of this goal. The aim of the current study is to develop a mucoadhesive formulation having adequate adhesiveness, spreading, and viscosity profiles that can ensure good tissue absorption of adapalene upon intravaginal application. Method: A combination of mucoadhesive agents has been employed, including Carbopol-934, HPMC K-15M, and xanthan gum, in varying ratios to formulate five different gels. Furthermore, a cost-effective UV-spectroscopic analytical method was developed to quantify the amount of adapalene in tested samples, both of in vitro and in vivo origin. The analytical method was validated for different parameters, including specificity, linearity, range, accuracy, precision, and ruggedness. The modified USP-II apparatus was used for dissolution studies, while in vivo pharmacokinetic validation was performed in a murine model. Result: Of all the tested formulations, on the basis of the rheo-mechanical attributes, ACX3 performed better than the rest, including the commercially available intravaginal reference product. ACX3 had an average adhesion time of 12 min and a spread diameter of 37 mm. It showed 35 mm as average distance travelled by the diluted sample for leakage assessment. The analytical method developed for the adapalene muco-adhesive gel was within the range for all the validation parameters. For further evaluating the performance of the formulation, dissolution studies were conducted in simulated vaginal conditions which showed 94.83% of drug release within 5 minutes, while on completion of 30 min, it was measured to be 92.90%. Moreover, approximately 67% of the administered drug was recovered after 5 min of administration as evaluated through tissue recovery procedures in mice. Conclusion: The study aided in development of a formulation which can enhance the muco-adhesion of the drug molecule, resulting in an improved pharmacokinetic profile. Moreover, it established an efficient assay method which can be employed for in vitro and in vivo quantification of adapalene in simulated and physiological fluids.
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Oleic Acid-Based Self Micro-Emulsifying Delivery System for Enhancing Antifungal Activities of Clotrimazole. Pharmaceutics 2022; 14:pharmaceutics14030478. [PMID: 35335854 PMCID: PMC8951188 DOI: 10.3390/pharmaceutics14030478] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 02/04/2023] Open
Abstract
Due to the increasing rate of drug resistance in Candida spp., higher doses of antifungal agents are being used resulting in toxicity. Drug delivery systems have been shown to provide an effective approach to enhance the efficacy and reduce the toxicity of antifungal agents. Oleic acid was revealed to effectively inhibit biofilm formation, hence reducing the virulence of Candida albicans. In this study, oleic acid-based self micro-emulsifying delivery systems (OA-SMEDDS) were developed for delivering clotrimazole (CLT). Based on the pseudo-ternary phase diagram and loading capacity test, the optimal ratio of OA-SMEDDS with CLT was selected. CLT-loaded OA-SMEDDS not only bears a higher drug loading capacity but also maintains good storage stability. The minimum inhibitory concentration (MIC50) of CLT-loaded OA-SMEDDS (0.01 μg/mL) in Candida albicans was significantly lower than that of CLT dissolved in DMSO (0.04 μg/mL). Moreover, we showed CLT-loaded OA-SMEDDS could effectively prevent biofilm formation and destroy the intact biofilm structure of Candida albicans. Furthermore, a CLT-loaded OA-SMEDDS gel was developed and evaluated for its antifungal properties. Disk diffusion assay indicated that both CLT-loaded OA-SMEDDS and CLT-loaded OA-SMEDDS gels were more effective than commercially available products in inhibiting the wild-type and drug-resistant species of Candida.
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Fernández-Romero AM, Maestrelli F, García-Gil S, Talero E, Mura P, Rabasco AM, González-Rodríguez ML. Preparation, Characterization and Evaluation of the Anti-Inflammatory Activity of Epichlorohydrin-β-Cyclodextrin/Curcumin Binary Systems Embedded in a Pluronic ®/Hyaluronate Hydrogel. Int J Mol Sci 2021; 22:13566. [PMID: 34948364 PMCID: PMC8709285 DOI: 10.3390/ijms222413566] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/30/2021] [Accepted: 12/14/2021] [Indexed: 12/27/2022] Open
Abstract
Curcumin (Cur) is an anti-inflammatory polyphenol that can be complexed with polymeric cyclodextrin (CD) to improve solubility and bioavailability. The aim of the present work was to prepare a CurCD hydrogel to treat inflammatory skin conditions. Epichlorohydrin-β-CD (EpiβCD) was used as polymeric CD. To characterize the binary system, solid-state and in-solution studies were performed. Afterwards, an experimental design was performed to optimize the hydrogel system. Finally, the CurEpiβCD hydrogel system was tested for anti-inflammatory activity using a HaCat psoriasis cell model. Co-grinded Cur/EpiβCD binary system showed a strong interaction and Curcumin solubility was much improved. Its combination with Pluronic® F-127/hyaluronate hydrogel demonstrated an improvement in release rate and Curcumin permeation. After testing its anti-inflammatory activity, the system showed a significant reduction in IL-6 levels. Hydrogel-containing CurEpiβCD complex is a great alternative to treat topical inflammatory diseases.
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Affiliation(s)
- Ana-María Fernández-Romero
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, C/Prof. García González 2, 41012 Seville, Spain; (A.-M.F.-R.); (A.M.R.)
| | - Francesca Maestrelli
- Department of Chemistry “Ugo Schiff” (DICUS), University of Florence, Via Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (F.M.); (P.M.)
| | - Sara García-Gil
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, C/Prof. García González 2, 41012 Seville, Spain; (S.G.-G.); (E.T.)
| | - Elena Talero
- Department of Pharmacology, Faculty of Pharmacy, Universidad de Sevilla, C/Prof. García González 2, 41012 Seville, Spain; (S.G.-G.); (E.T.)
| | - Paola Mura
- Department of Chemistry “Ugo Schiff” (DICUS), University of Florence, Via Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (F.M.); (P.M.)
| | - Antonio M. Rabasco
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, C/Prof. García González 2, 41012 Seville, Spain; (A.-M.F.-R.); (A.M.R.)
| | - María Luisa González-Rodríguez
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, C/Prof. García González 2, 41012 Seville, Spain; (A.-M.F.-R.); (A.M.R.)
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Okur NÜ, Yağcılar AP, Siafaka PI. Promising Polymeric Drug Carriers for Local Delivery: The Case of in situ Gels. Curr Drug Deliv 2021; 17:675-693. [PMID: 32510291 DOI: 10.2174/1567201817666200608145748] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/28/2020] [Accepted: 04/18/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND At present, the controlled local drug delivery is a very promising approach compared to systemic administration, since it mostly targets the affected tissue. In fact, various drug carriers for local delivery have been prepared with improved therapeutic efficacy. OBJECTIVE in situ polymer gels are drug delivery systems that not only present liquid characteristics before their administration in body, but once they are administered, form gels due to gelation. Their gelation mechanism is due to factors such as pH alteration, temperature change, ion activation or ultraviolet irradiation. in situ gels offer various advantages compared to conventional formulations due to their ability to release drugs in a sustainable and controllable manner. Most importantly, in situ gels can be used in local drug delivery applications for various diseases. METHODS This review includes the basic knowledge and theory of in situ gels as well as their various applications according to their administration route. RESULTS Various natural, semisynthetic, and synthetic polymers can produce in situ polymeric gels. For example, natural polysaccharides such as alginic acid, chitosan, gellan gum, carrageenan etc. have been utilized as in situ gels for topical delivery. Besides the polysaccharides, poloxamers, poly(Nisopropylacrylamide), poly(ethyleneoxide)/ (lactic-co-glycolic acid), and thermosensitive liposome systems can be applied as in situ gels. In most cases, in situ polymeric gels could be applied via various administration routes such as oral, vaginal, ocular, intranasal and injectable. CONCLUSION To conclude, it can be revealed that in situ gels could be a promising alternative carrier for both chronic and immediate diseases.
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Affiliation(s)
- Neslihan Üstündağ Okur
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey
| | - Ayşe Pınar Yağcılar
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey
| | - Panoraia I Siafaka
- Faculty of Sciences, School of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
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7
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Osmałek T, Froelich A, Jadach B, Tatarek A, Gadziński P, Falana A, Gralińska K, Ekert M, Puri V, Wrotyńska-Barczyńska J, Michniak-Kohn B. Recent Advances in Polymer-Based Vaginal Drug Delivery Systems. Pharmaceutics 2021; 13:884. [PMID: 34203714 PMCID: PMC8232205 DOI: 10.3390/pharmaceutics13060884] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022] Open
Abstract
The vagina has been considered a potential drug administration route for centuries. Most of the currently marketed and investigated vaginal formulations are composed with the use of natural or synthetic polymers having different functions in the product. The vaginal route is usually investigated as an administration site for topically acting active ingredients; however, the anatomical and physiological features of the vagina make it suitable also for drug systemic absorption. In this review, the most important natural and synthetic polymers used in vaginal products are summarized and described, with special attention paid to the properties important in terms of vaginal application. Moreover, the current knowledge on the commonly applied and innovative dosage forms designed for vaginal administration was presented. The aim of this work was to highlight the most recent research directions and indicate challenges related to vaginal drug administrations. As revealed in the literature overview, intravaginal products still gain enormous scientific attention, and novel polymers and formulations are still explored. However, there are research areas that require more extensive studies in order to provide the safety of novel vaginal products.
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Affiliation(s)
- Tomasz Osmałek
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 60-780 Poznań, Poland; (A.F.); (B.J.); (A.T.); (P.G.); (A.F.); (K.G.); (M.E.)
| | - Anna Froelich
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 60-780 Poznań, Poland; (A.F.); (B.J.); (A.T.); (P.G.); (A.F.); (K.G.); (M.E.)
| | - Barbara Jadach
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 60-780 Poznań, Poland; (A.F.); (B.J.); (A.T.); (P.G.); (A.F.); (K.G.); (M.E.)
| | - Adam Tatarek
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 60-780 Poznań, Poland; (A.F.); (B.J.); (A.T.); (P.G.); (A.F.); (K.G.); (M.E.)
| | - Piotr Gadziński
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 60-780 Poznań, Poland; (A.F.); (B.J.); (A.T.); (P.G.); (A.F.); (K.G.); (M.E.)
| | - Aleksandra Falana
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 60-780 Poznań, Poland; (A.F.); (B.J.); (A.T.); (P.G.); (A.F.); (K.G.); (M.E.)
| | - Kinga Gralińska
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 60-780 Poznań, Poland; (A.F.); (B.J.); (A.T.); (P.G.); (A.F.); (K.G.); (M.E.)
| | - Michał Ekert
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, 60-780 Poznań, Poland; (A.F.); (B.J.); (A.T.); (P.G.); (A.F.); (K.G.); (M.E.)
| | - Vinam Puri
- Department of Pharmaceutics, William Levine Hall, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Life Sciences Building, New Jersey Center for Biomaterials, Piscataway, NJ 08854, USA; (V.P.); (B.M.-K.)
| | - Joanna Wrotyńska-Barczyńska
- Division of Infertility and Reproductive Endocrinology, Department of Gynecology, Obstetrics and Gynecological Oncology, Poznan University of Medical Sciences, 33 Polna St., 60-535 Poznań, Poland;
| | - Bozena Michniak-Kohn
- Department of Pharmaceutics, William Levine Hall, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Life Sciences Building, New Jersey Center for Biomaterials, Piscataway, NJ 08854, USA; (V.P.); (B.M.-K.)
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Dual-Responsive Micellar Microgels Matrixed with Surface-Engineered Lipids: a New Approach for Controlled Vaginal Drug Delivery. J Pharm Innov 2021. [DOI: 10.1007/s12247-021-09546-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Rincón-López J, Almanza-Arjona YC, Riascos AP, Rojas-Aguirre Y. Technological evolution of cyclodextrins in the pharmaceutical field. J Drug Deliv Sci Technol 2020; 61:102156. [PMID: 33078064 PMCID: PMC7553870 DOI: 10.1016/j.jddst.2020.102156] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/21/2020] [Accepted: 10/05/2020] [Indexed: 01/07/2023]
Abstract
We herein disclose how global cyclodextrin-based pharmaceutical technologies have evolved since the early 80s through a 1998 patents dataset retrieved from Derwent Innovation Index. We used text-mining techniques based on the patents semantic content to extract the knowledge contained therein, to analyze technologies related to the principal attributes of CDs: solubility, stability, and taste-masking enhancement. The majority of CDs pharmaceutical technologies are directed toward parenteral aqueous solutions. The development of oral and ocular formulations is rapidly growing, while technologies for nasal and pulmonary routes are emerging and seem to be promising. Formulations for topical, transdermal, vaginal, and rectal routes do not account for a high number of patents, but they may be hiding a great potential, representing opportunity research areas. Certainly, the progress in materials sciences, supramolecular chemistry, and nanotechnology, will influence the trend of that, apparently neglected, research. The bottom line, CDs pharmaceutical technologies are still increasing, and this trend is expected to continue in the coming years. Patent monitoring allows the identification of relevant technologies and trends to prioritize research, development, and investment in both, academia and industry. We expect the scope of this approach to be applied in the pharmaceutical field beyond CDs technological applications.
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Affiliation(s)
- Juliana Rincón-López
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, 04510, Mexico City, Mexico
| | - Yara C Almanza-Arjona
- Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, 04510, Mexico City, Mexico
| | - Alejandro P Riascos
- Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, 01000, Ciudad de México, Mexico
| | - Yareli Rojas-Aguirre
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, 04510, Mexico City, Mexico
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Boyko V, Kobrina L, Bortnitsky V, Bandurina D, Riabov S. STUDY OF INCLUSION COMPLEXES OF CARBOXYMETHYLATED-β-CYCLODEXTRIN WITH BIPHONAZOLE AND CLOTRIMAZOL BY THE PYROLYTIC MASS SPECTROMETRY METHOD. Polym J 2020. [DOI: 10.15407/polymerj.42.03.226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kaur S, Kaur S. Recent Advances in Vaginal Delivery for the Treatment of Vulvovaginal Candidiasis. Curr Mol Pharmacol 2020; 14:281-291. [PMID: 32564767 DOI: 10.2174/1573405616666200621200047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 01/25/2020] [Accepted: 02/14/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Vulvovaginal candidiasis (VVC) is a common vaginal infection caused by candida species, affecting 70% of the women. It may occur due to the imbalance in the vaginal micro- biodata, pregnancy, diabetes, use of antibiotics, frequent sexual activities or AIDS. AIM The main aim of this review is to provide overview about different vaginal delivery systems for the administration of antifungal agents like conventional, mucoadhesive and muco-penetrating delivery systems. METHOD The conventional delivery systems available have limited efficacy due to the less residence time and adverse effects. In order to overcome these issues, a delivery system with mucoadhesive and muco-penetrating properties is required. Mucoadhesive polymers have excellent binding properties with mucin and thus increasing residence time. On the other hand, muco-penetrating polymers transport the antifungal agents across the mucus layer. RESULTS This review summarizes the pathophysiology of VVC along with novel delivery systems for the treatment of infection through mucoadhesive and muco-penetrating approaches. Surface modifications of nano/ microparticles with mucoadhesive or muco-penetrating particles may provide delivery systems with improved therapeutic efficacy. CONCLUSION Based on the available data, conventional and mucoadhesive drug delivery systems have some limitations, they still require improvement/ development for safe and effective delivery of antifungal agents.
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Affiliation(s)
- Sandeep Kaur
- Department of Pharmaceutics, ISF College of Pharmacy, Moga (Punjab), India
| | - Sukhbir Kaur
- Department of Pharmaceutics, ISF College of Pharmacy, Moga (Punjab), India
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12
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Mohamed Ameen H, Kunsági-Máté S, Szente L, Lemli B. Encapsulation of sulfamethazine by native and randomly methylated β-cyclodextrins: The role of the dipole properties of guests. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 225:117475. [PMID: 31472423 DOI: 10.1016/j.saa.2019.117475] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 07/28/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
Sulfonamides are preventive and therapeutic agents for certain infections caused by gram-positive and gram-negative microorganisms. In this work the interactions of sulfamethazine, a representative of sulfonamide antibiotics, with two β-cyclodextrin derivatives were investigated at different pH. Results show formation of stable sulfamethazine - β-cyclodextrin complexes and reflect importance of the competition of the hydrogen bonding and electrostatic interactions. The complex geometry formed is affected by the orientation of the pH-dependent dipole moment of sulfamethazine molecule and prolonged prior the sulfamethazine molecule enters into the β-cyclodextrin's cavity. Functionalization of the β-cyclodextrin molecule doesn't affect considerably the complex stabilities, therefore the native β-cyclodextrin molecule looks the simplest and most effective inclusion host to design selective and sensitive tool for sulfamethazine sensing.
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Affiliation(s)
- Hiba Mohamed Ameen
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pécs, H-7624 Pécs, Ifjúság 6, Hungary
| | - Sándor Kunsági-Máté
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pécs, H-7624 Pécs, Ifjúság 6, Hungary; Institute of Organic and Medicinal Chemistry, Medical School, University of Pécs, H-7624 Pécs, Szigeti 12, Hungary; János Szentágothai Research Center, University of Pécs, H-7624 Pécs, Ifjúság 20, Hungary
| | - Lajos Szente
- CycloLab Cyclodextrin Research & Development Laboratory, Ltd., H-1097 Budapest, Illatos 7, Hungary
| | - Beáta Lemli
- Department of General and Physical Chemistry, Faculty of Sciences, University of Pécs, H-7624 Pécs, Ifjúság 6, Hungary; Institute of Organic and Medicinal Chemistry, Medical School, University of Pécs, H-7624 Pécs, Szigeti 12, Hungary; János Szentágothai Research Center, University of Pécs, H-7624 Pécs, Ifjúság 20, Hungary.
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Venuti V, Corsaro C, Stancanelli R, Paciaroni A, Crupi V, Tommasini S, Ventura CA, Majolino D. Analysis of the thermal fluctuations in inclusion complexes of genistein with β-cyclodextrin derivatives. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Jacob S, Nair AB. Cyclodextrin complexes: Perspective from drug delivery and formulation. Drug Dev Res 2018; 79:201-217. [PMID: 30188584 DOI: 10.1002/ddr.21452] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Revised: 06/22/2018] [Accepted: 06/22/2018] [Indexed: 02/05/2023]
Abstract
Cyclodextrins (CDs) have been widely investigated as a unique pharmaceutical excipient for past few decades and is still explored for new applications. They are highly versatile oligosaccharides which possess multifunctional characteristics, and are mainly used to improve the physicochemical stability, solubility, dissolution rate, and bioavailability of drugs. Stability constant, factors affecting complexation, techniques to enhance complexation efficiency, the preparation methods for molecular inclusion complexes and release of guest molecules are discussed in brief. In addition, different CD derivatives and their pharmacokinetics are elaborated. Further, the significance of CD complex in aqueous solubility, dissolution and bioavailability, stability, and taste masking is explained. The recent advancement of CDs in developing various drug delivery systems is enlightened. Indeed, the potential of CDs by means of inclusion complex formation have widen the applicability of these materials in various drug delivery systems including ocular, osmotic, mucoadhesive, transdermal, nasal, and targeted delivery systems. Feasibility studies have been performed on the benefit of these cyclic oligomers as nanocarriers, a strategy that can modify the drugs with improved physicochemical properties. Studies also demonstrated the feasibility of CDs to self-assemble in the form of stable nanoaggregates, which may extend the scope of CDs in drug delivery to the continually expanding list of new drug entities.
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Affiliation(s)
- Shery Jacob
- Department of Pharmaceutical Sciences, College of Pharmacy, Gulf Medical University, Ajman, United Arab Emirates
| | - Anroop B Nair
- Department of Pharmaceutical Sciences, College of Clinical Pharmacy, King Faisal University, Al-Ahsa, Saudi Arabia
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15
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In-situ forming gels containing fluorometholone-loaded polymeric nanoparticles for ocular inflammatory conditions. Colloids Surf B Biointerfaces 2018; 175:365-374. [PMID: 30554015 DOI: 10.1016/j.colsurfb.2018.11.065] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/22/2018] [Accepted: 11/26/2018] [Indexed: 12/13/2022]
Abstract
Thermosensitive gels have been developed and optimized in such a way that they become gels at corneal temperature and with a viscosity that allows the adequate release of the Fluorometholone (FMT)-loaded PLGA nanoparticles (NPs) in order to improve ocular anti-inflammatory efficacy against a commercial formulation. It has been shown that gels avoid burst release of the drug in the first hours with a slow and increasing profile after administration. NPs have maintained their average size and spherical shape within the gels as confirmed by transmission electron microscopy (TEM). In turn, the in-situ gelling of the formulations allows the administration in eye drops dosage form due to its state of sol at temperatures below 25 °C. Ocular tolerance studies have shown that no formulation causes eye irritation. The administration of the developed formulations has improved the precorneal residence time reflected in the ocular bioavailability, where deep tissues as aqueous humour and crystalline were reached. In conclusion, the use of thermosensitive gels for the topical application of NPs has demonstrated their effectiveness in the acute and preventive treatment of ocular inflammatory conditions.
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Juric D, Rohner NA, von Recum HA. Molecular Imprinting of Cyclodextrin Supramolecular Hydrogels Improves Drug Loading and Delivery. Macromol Biosci 2018; 19:e1800246. [DOI: 10.1002/mabi.201800246] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 11/01/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Dajan Juric
- Department of Biomedical Engineering; Case Western Reserve University; 10900 Euclid Avenue Cleveland OH 44118 USA
| | - Nathan A. Rohner
- Department of Biomedical Engineering; Case Western Reserve University; 10900 Euclid Avenue Cleveland OH 44118 USA
| | - Horst A. von Recum
- Department of Biomedical Engineering; Case Western Reserve University; 10900 Euclid Avenue Cleveland OH 44118 USA
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17
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Madugulla L, Ravula AR, Kondapi AK, Yenugu S. Evaluation of the reproductive toxicity of antiretroviral drug loaded lactoferrin nanoparticles. Syst Biol Reprod Med 2018; 65:205-213. [PMID: 30260720 DOI: 10.1080/19396368.2018.1519047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Multiple prevention therapy has gained importance for the prevention and treatment of sexually transmitted diseases, especially HIV/AIDS. Antiretroviral drugs encapsulated in nanoparticles have been developed for efficient delivery of the drugs to the vaginal surface. Lactoferrin nanoparticles (LFNPs) encapsulating anticancer or antiretroviral drugs are found to be promising agents to specifically deliver drugs at the target sites. Recent studies indicate that the bioavailability is higher for antiretroviral drugs delivered by LFNPs than when the drugs are administered alone. Although LFNP-mediated drug delivery via the oral or vaginal route for the treatment of HIV/AIDS is promising, the effect of such administrations is not well studied. Drug-loaded LFNPs when administered to rats by the vaginal route did not show any effect on the reproductive performance, fertility, and postnatal development. Oral administration of drug-loaded LFNPs caused a significant decrease in litter size, whereas the reproductive performance and postnatal development remained normal. In our model system, the results indicate that vaginal administration of drug-loaded LFNPs appears safer and can be projected for the delivery of antiretroviral agents via the vaginal route. Abbreviations: LFNPs: lactoferrin nanoparticles; STIs: sexually transmitted diseases infections; NPs: nanoparticles; LF: lactoferrin; DL-LFNPs: drug loaded lactoferrin nanoparticles; MPT: multiple prevention techniques.
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Affiliation(s)
- Lavanya Madugulla
- a Department of Animal Biology, School of Life Sciences , University of Hyderabad , Hyderabad , India
| | - Anandha Rao Ravula
- a Department of Animal Biology, School of Life Sciences , University of Hyderabad , Hyderabad , India
| | - Anand Kumar Kondapi
- b Department of Biotechnology and Bioinformatics, School of Life Sciences , University of Hyderabad , Hyderabad , India
| | - Suresh Yenugu
- a Department of Animal Biology, School of Life Sciences , University of Hyderabad , Hyderabad , India
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18
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Onawole AT, Popoola SA, Saleh TA, Al-Saadi AA. Silver-loaded graphene as an effective SERS substrate for clotrimazole detection: DFT and spectroscopic studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 201:354-361. [PMID: 29763829 DOI: 10.1016/j.saa.2018.05.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/19/2018] [Accepted: 05/05/2018] [Indexed: 06/08/2023]
Abstract
Vibrational infrared, Raman and surface-enhanced Raman scattering (SERS) spectra of clotrimazole (CTZ) were documented and evaluated. Density-functional theory, B3LYP/6-311++G(d,p), approach was implemented to identify the possible conformations, develop the electrostatic potential map, evaluate frontier molecular orbitals and calculate the vibrational spectra of the target compound. The silver-loaded graphene was shown to be an effective SERS substrate for CTZ trace detection. The SERS spectrum showed two enhanced bands at 670 cm-1 and 700 cm-1 which confirmed the absorption of the silver substrate through chlorine and nitrogen atoms. A detection limit as low as 5 nM could be reached with a determination coefficient of 0.9988 using the band at 670 cm-1. The protein-ligand interaction with Secreted Aspartic Proteinase 2 (SAP2) of C. albicans showed that the four stable forms of CTZ maintain a free energy of binding of 6-7 kcal/mol, which could give insights into the mode of action in treating Candidiasis.
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Affiliation(s)
- Abdulmujeeb T Onawole
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - Saheed A Popoola
- Department of Chemistry, Islamic University of Madinah, Saudi Arabia
| | - Tawfik A Saleh
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia.
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Rao MRP, Chaudhari J, Trotta F, Caldera F. Investigation of Cyclodextrin-Based Nanosponges for Solubility and Bioavailability Enhancement of Rilpivirine. AAPS PharmSciTech 2018; 19:2358-2369. [PMID: 29869305 DOI: 10.1208/s12249-018-1064-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 05/11/2018] [Indexed: 12/19/2022] Open
Abstract
Rilpivrine is BCS class II drug used for treatment of HIV infection. The drug has low aqueous solubility (0.0166 mg/ml) and dissolution rate leading to low bioavailability (32%). Aim of this work was to enhance solubility and dissolution of rilpivirine using beta-cyclodextrin-based nanosponges. These nanosponges are biocompatible nanoporous particles having high loading capacity to form supramolecular inclusion and non-inclusion complexes with hydrophilic and lipophilic drugs for solubility enhancement. Beta-cyclodextrin was crosslinked with carbonyl diimidazole and pyromellitic dianhydride to prepare nanosponges. The nanosponges were loaded with rilpivirine by solvent evaporation method. Binary and ternary complexes of drug with β-CD, HP-β-CD, nanosponges, and tocopherol polyethylene glycol succinate were prepared and characterized by phase solubility, saturation solubility in different media, in vitro dissolution, and in vivo pharmacokinetics. Spectral analysis by Fourier transform infrared spectroscopy, powder X-ray diffraction, and differential scanning calorimetry was performed. Results obtained from spectral characterization confirmed inclusion complexation. Phase solubility studies indicated stable complex formation. Saturation solubility was found to be 10-13-folds higher with ternary complexes in distilled water and 12-14-fold higher in 0.1 N HCl. Solubility enhancement was evident in biorelevant media. Molecular modeling studies revealed possible mode of entrapment of rilpivirine within β-CD cavities. A 3-fold increase in dissolution with ternary complexes was observed. Animal studies revealed nearly 2-fold increase in oral bioavailability of rilpivirine. It was inferred that electronic interactions, hydrogen bonding, and van der Waals forces are involved in the supramolecular interactions.
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Arslan A, Kose Ozkan C, Sig AK, Dogan E, Esim O, Cetinkaya S, Atalay F, Tas C, Savaser A, Ozkan Y. Evaluation of a novel oxiconazole nitrate formulation: The thermosensitive gel. Saudi Pharm J 2018; 26:665-672. [PMID: 29991910 PMCID: PMC6035325 DOI: 10.1016/j.jsps.2018.02.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 02/11/2018] [Indexed: 11/29/2022] Open
Abstract
Superficial fungal infections caused by Candida species are common skin diseases. Therefore, this study aimed to develop a new formulation containing oxiconazole nitrate, which is an azole group derivative for antifungal treatment, as a thermosensitive gel since there has been no literature study until now. MIC value of the novel thermosensitive formulation against three Candida species was calculated and time-dependent antifungal activity analysis was performed. Viscosity, transition temperature Tsol-gel (°C) and gelation time of the thermosensitive gel formulation were also determined in the viscometer. The measurements performed on the tensilometer device were analyzed for adhesion hardness and elongation percentages of the formulation. In the FT-IR spectrometer, the spectrum of solution and gel state was compared between 650 and 4000 cm-1 and it was found that there is no difference between them. It was found that the temperature is reversible on the formulation and did not cause any disruption of its components. Characterization parameters of the thermosensitive gel formulation containing oxiconazole nitrate and time-dependent activity against Candida species was observed to be the same as those of the solution containing only oxiconazole nitrate. MIC, MFC and time-dependent antifungal analysis did not show any particular difference between formulation and oxiconazole nitrate itself. Thermosensitive gel formulation containing oxiconazole nitrate was found to be effective on superficial fungal infections. We believe it is also appropriate for in vivo usage, but it is necessary to perform animal and human research. It is also needed to evaluate the formulation against other etiologic agents of superficial fungal infections.
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Affiliation(s)
- Alper Arslan
- University of Health Sciences, Department of Pharmaceutical Technology, Gulhane Campus, Ankara, Turkey
| | - Cansel Kose Ozkan
- University of Health Sciences, Department of Pharmaceutical Technology, Gulhane Campus, Ankara, Turkey
| | - Ali Korhan Sig
- University of Health Sciences, Department of Medical Microbiology, Gulhane Campus, Ankara, Turkey
| | - Eyup Dogan
- University of Health Sciences, Department of Medical Microbiology, Gulhane Campus, Ankara, Turkey
| | - Ozgur Esim
- University of Health Sciences, Department of Pharmaceutical Technology, Gulhane Campus, Ankara, Turkey
| | - Serdar Cetinkaya
- University of Health Sciences, Department of Pharmaceutical Toxicology, Gulhane Campus, Ankara, Turkey
| | - Filiz Atalay
- University of Health Sciences, Department of Pharmaceutical Technology, Gulhane Campus, Ankara, Turkey
| | - Cetin Tas
- University of Health Sciences, Department of Pharmaceutical Technology, Gulhane Campus, Ankara, Turkey
| | - Ayhan Savaser
- University of Health Sciences, Department of Pharmaceutical Technology, Gulhane Campus, Ankara, Turkey
| | - Yalcin Ozkan
- University of Health Sciences, Department of Pharmaceutical Technology, Gulhane Campus, Ankara, Turkey
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21
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Arca HC, Mosquera-Giraldo LI, Bi V, Xu D, Taylor LS, Edgar KJ. Pharmaceutical Applications of Cellulose Ethers and Cellulose Ether Esters. Biomacromolecules 2018; 19:2351-2376. [PMID: 29869877 DOI: 10.1021/acs.biomac.8b00517] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Cellulose ethers have proven to be highly useful natural-based polymers, finding application in areas including food, personal care products, oil field chemicals, construction, paper, adhesives, and textiles. They have particular value in pharmaceutical applications due to characteristics including high glass transition temperatures, high chemical and photochemical stability, solubility, limited crystallinity, hydrogen bonding capability, and low toxicity. With regard to toxicity, cellulose ethers have essentially no ability to permeate through gastrointestinal enterocytes and many are already in formulations approved by the U.S. Food and Drug Administration. We review pharmaceutical applications of these valuable polymers from a structure-property-function perspective, discussing each important commercial cellulose ether class; carboxymethyl cellulose, methyl cellulose, hydroxypropylcellulose, hydroxypropyl methyl cellulose, and ethyl cellulose, and cellulose ether esters including hydroxypropyl methyl cellulose acetate succinate and carboxymethyl cellulose acetate butyrate. We also summarize their syntheses, basic material properties, and key pharmaceutical applications.
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Affiliation(s)
| | - Laura I Mosquera-Giraldo
- Department of Industrial and Physical Pharmacy , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Vivian Bi
- Ashland Specialty Ingredients , 500 Hercules Road , Wilmington , Delaware 19808 , United States
| | - Daiqiang Xu
- Ashland Specialty Ingredients , 500 Hercules Road , Wilmington , Delaware 19808 , United States
| | - Lynne S Taylor
- Department of Industrial and Physical Pharmacy , Purdue University , West Lafayette , Indiana 47907 , United States
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22
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Martínez-Pérez B, Quintanar-Guerrero D, Tapia-Tapia M, Cisneros-Tamayo R, Zambrano-Zaragoza ML, Alcalá-Alcalá S, Mendoza-Muñoz N, Piñón-Segundo E. Controlled-release biodegradable nanoparticles: From preparation to vaginal applications. Eur J Pharm Sci 2017; 115:185-195. [PMID: 29208486 DOI: 10.1016/j.ejps.2017.11.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 11/24/2017] [Accepted: 11/30/2017] [Indexed: 12/31/2022]
Abstract
This study aimed to prepare poly (d,l-lactide-co-glycolide) (PLGA) nanoparticles (NPs) with chitosan (CTS) surface modification to be used as a vaginal delivery system for antimycotic drugs. Clotrimazole was encapsulated with entrapment efficiencies of 86.1 and 68.9% into Clotrimazole-PLGA-NPs (CLT-PLGA-NPs) and PLGA-NPs with CTS-modified surface (CLT-PLGA-CTS-NPs), respectively. The later NPs exhibited a larger size and higher positive zeta potential (Z potential) in comparison to unmodified NPs. In vitro release kinetic studies indicated that Clotrimazole was released in percentages of >98% from both nanoparticulate systems after 18days. Antifungal activity and mucoadhesive properties of NPs were enhanced when CTS was added onto the surface. In summary, these results suggested that Clotrimazole loaded into PLGA-CTS-NPs has great potential for vaginal applications in treating vaginal infections generated by Candida albicans.
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Affiliation(s)
- Beatriz Martínez-Pérez
- Universidad Nacional Autónoma de México (UNAM), Facultad de Estudios Superiores Cuautitlán (FES-Cuautitlán), Laboratorio de Sistemas Farmacéuticos de Liberación Modificada, Km. 2.5 Carretera Cuautitlán-Teoloyucan, San Sebastián Xhala, C.P. 54714 Cuautitlán Izcalli, Edo. de México, Mexico
| | - David Quintanar-Guerrero
- UNAM, FES-Cuautitlán, Laboratorio de Posgrado en Tecnología Farmacéutica, Av. 1o de mayo s/n, C.P. 54740 Cuautitlán Izcalli, Edo. de México, Mexico
| | - Melina Tapia-Tapia
- Centro Conjunto de Investigación Química Sustentable UAEM-UNAM (CCIQS), Carretera Toluca-Atlacomulco Km. 14.5, Unidad San Cayetano, C.P. 50200 Toluca, Edo. de México, Mexico
| | - Ricardo Cisneros-Tamayo
- Universidad Politécnica del Valle de México, División de Ingeniería en Nanotecnología, Av. Mexiquense s/n, esq. Universidad Politécnica, Col. Villa Esmeralda, C.P. 54910 Tultitlán, Edo. de México, Mexico
| | - María L Zambrano-Zaragoza
- UNAM, FES-Cuautitlán, Laboratorio de Procesos de Transformación y Tecnologías Emergentes en Alimentos, Km. 2.5 Carretera Cuautitlán-Teoloyucan, San Sebastián Xhala, C.P. 54714 Cuautitlán Izcalli, Edo. de México, Mexico
| | - Sergio Alcalá-Alcalá
- Universidad Autónoma del Estado de Morelos, Facultad de Farmacia, Av. Universidad 1001, Col. Chamilpa, C.P. 62209 Cuernavaca, Morelos, Mexico
| | - Néstor Mendoza-Muñoz
- Universidad de Colima, Facultad de Ciencias Químicas, Laboratorio de Farmacia, Carretera Colima-Coquimatlán Km. 9, C.P. 28400 Coquimatlán, Colima, Mexico
| | - Elizabeth Piñón-Segundo
- Universidad Nacional Autónoma de México (UNAM), Facultad de Estudios Superiores Cuautitlán (FES-Cuautitlán), Laboratorio de Sistemas Farmacéuticos de Liberación Modificada, Km. 2.5 Carretera Cuautitlán-Teoloyucan, San Sebastián Xhala, C.P. 54714 Cuautitlán Izcalli, Edo. de México, Mexico.
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23
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Taurin S, Almomen AA, Pollak T, Kim SJ, Maxwell J, Peterson CM, Owen SC, Janát-Amsbury MM. Thermosensitive hydrogels a versatile concept adapted to vaginal drug delivery. J Drug Target 2017; 26:533-550. [PMID: 29096548 DOI: 10.1080/1061186x.2017.1400551] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Vaginal drug delivery represents an attractive strategy for local and systemic delivery of drugs otherwise poorly absorbed after oral administration. The rather dense vascular network, mucus permeability and the physiological phenomenon of the uterine first-pass effect can all be exploited for therapeutic benefit. However, several physiological factors such as an acidic pH, constant secretion, and turnover of mucus as well as varying thickness of the vaginal epithelium can impact sustained drug delivery. In recent years, polymers have been designed to tackle challenges mentioned above. In particular, thermosensitive hydrogels hold great promise due to their stability, biocompatibility, adhesion properties and adjustable drug release kinetics. Here, we discuss the physiological and anatomical uniqueness of the vaginal environment and how it impacts the safe and efficient vaginal delivery and also reviewed several thermosensitive hydrogels deemed suitable for vaginal drug delivery by addressing specific characteristics, which are essential to engage the vaginal environment successfully.
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Affiliation(s)
- Sebastien Taurin
- a Department of Obstetrics and Gynecology, Division of Gynecologic Oncology , University of Utah Health Sciences , Salt Lake City , UT , USA
| | - Aliyah A Almomen
- a Department of Obstetrics and Gynecology, Division of Gynecologic Oncology , University of Utah Health Sciences , Salt Lake City , UT , USA.,b Department of Pharmaceutics and Pharmaceutical Chemistry , University of Utah , Salt Lake City , UT , USA
| | - Tatianna Pollak
- a Department of Obstetrics and Gynecology, Division of Gynecologic Oncology , University of Utah Health Sciences , Salt Lake City , UT , USA
| | - Sun Jin Kim
- b Department of Pharmaceutics and Pharmaceutical Chemistry , University of Utah , Salt Lake City , UT , USA
| | - John Maxwell
- a Department of Obstetrics and Gynecology, Division of Gynecologic Oncology , University of Utah Health Sciences , Salt Lake City , UT , USA
| | - C Matthew Peterson
- c Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology , University of Utah Health Science Center , Salt Lake City , UT , USA
| | - Shawn C Owen
- b Department of Pharmaceutics and Pharmaceutical Chemistry , University of Utah , Salt Lake City , UT , USA.,d Department of Bioengineering , University of Utah , Salt Lake City , UT , USA
| | - Margit M Janát-Amsbury
- a Department of Obstetrics and Gynecology, Division of Gynecologic Oncology , University of Utah Health Sciences , Salt Lake City , UT , USA.,b Department of Pharmaceutics and Pharmaceutical Chemistry , University of Utah , Salt Lake City , UT , USA.,c Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology , University of Utah Health Science Center , Salt Lake City , UT , USA.,d Department of Bioengineering , University of Utah , Salt Lake City , UT , USA
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24
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Nasra MMA, Khiri HM, Hazzah HA, Abdallah OY. Formulation, in-vitro characterization and clinical evaluation of curcumin in-situ gel for treatment of periodontitis. Drug Deliv 2017; 24:133-142. [PMID: 28156166 PMCID: PMC8241198 DOI: 10.1080/10717544.2016.1233591] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 08/30/2016] [Accepted: 09/04/2016] [Indexed: 01/13/2023] Open
Abstract
This study aimed to develop syringeable in-situ curcumin (cur) gel for the treatment of periodontal pockets as well as to evaluate the clinical efficacy of Cur in-situ gel formulation. Different in-situ gel formulations of Cur were prepared using 30% of pluronic F127, and 1% of carbopol P934. The formulations were evaluated regarding gelation temperature, pH, viscosity, syringeability study, in-vitro release and chemical stability of cur. The effect of aging of gel formulations for 3months in refrigerator was investigated. The selected formulation was clinically evaluated through the determination of probing depth, plaque index, and bleeding index at baseline and 1 month after application. The formulations showed accepted gelation temperature ranging from 28 to 34 °C and all had pH value of 4. The viscosity of the formulations at 4 °C ranged from 19 000 to 37 000 cP. All formulations were easily syringeable through 21 gauge needle at cold temperature. Curcumin stability during the release study was maintained. Aging showed no significant effect on release profile, drug content, or the pH after 3 months, while it showed a slight increase in viscosity with concomitant decrease in gelation temperature. Selected formulations delivered into periodontal pocket evaluated clinically showed to be effective. The treated group revealed that the adjunctive use of intracrevicular 2% curcumin in-situ gel adjunct to mechanical treatment in patients with adult periodontitis could aid in significant clinical reduction of probing depth, bleeding index, and to less extent of plaque. This indicates that curcumin in this novel drug delivery system is an excellent candidate for periodontal disease treatment.
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Affiliation(s)
- Maha M. A. Nasra
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt and
| | - Heba M. Khiri
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt and
| | - Heba A. Hazzah
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Pharos university in Alexandria, Alexandria, Egypt
| | - Ossama Y. Abdallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt and
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25
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Rao MRP, Shirsath C. Enhancement of Bioavailability of Non-nucleoside Reverse Transciptase Inhibitor Using Nanosponges. AAPS PharmSciTech 2017; 18:1728-1738. [PMID: 27757921 DOI: 10.1208/s12249-016-0636-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 09/16/2016] [Indexed: 11/30/2022] Open
Abstract
Efavirenz is a non-nucleoside reverse transcriptase inhibitor which is chronically prescribed for HIV patients. However, it exhibits solubility-limited bioavailability. Aim of this work was to enhance the solubility and dissolution of the Biopharmaceutical Classification System (BCS) class II drug efavirenz, using beta-cyclodextrin-based nanosponges. Nanosponges have high drug loading capacity and are effective for solubility enhancement. Beta-cyclodextrin was crosslinked with carbonates in different ratios to prepare nanosponges. The nanosponges were loaded with efavirenz by solvent evaporation method and the nanosponge with higher drug loading capacity was selected for further studies. Binary and ternary complexes with EFA, NS, and PVP K30 were prepared and characterized by phase solubility, solution state interaction, saturation solubility, in vitro dissolution, and in vivo pharmacokinetics. Spectral analysis by Fourier transform infrared spectroscopy, powder X-ray diffraction, differential scanning calorimetry, and field emission scanning electron microscopy was performed. Results obtained from spectral characterization confirmed inclusion complexation. Stability constant for ternary complex was found to be 1997 lit/mole, which indicates stable complex formation. The saturation solubility was found to be 17-fold higher with ternary complex in distilled water and about 4-fold in simulated gastric fluid. In vitro dissolution was improved 3 folds with ternary complex. Ternary nanosponge complexes were found to have 2-fold increase in oral bioavailability of efavirenz as compared to plain drug.
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26
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Abd El-Gawad AEGH, Soliman OA, El-Dahan MS, Al-Zuhairy SAS. Improvement of the Ocular Bioavailability of Econazole Nitrate upon Complexation with Cyclodextrins. AAPS PharmSciTech 2017; 18:1795-1809. [PMID: 27830515 DOI: 10.1208/s12249-016-0609-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/01/2016] [Indexed: 11/30/2022] Open
Abstract
Econazole nitrate (EC) is an active, imidazole antifungal agent. However, low aqueous solubility and dissolution rate of EC has discouraged its usage for the treatment of ophthalmic fungal infection. In this study, inclusion complexes of EC with cyclodextrins were prepared to enhance its solubility, dissolution, and ocular bioavailability. To achieve this goal, EC was complexed with β-CyD/HP-β-CyD using kneading, co-precipitation, and freeze-drying techniques. Phase-solubility studies were performed to investigate the complexes in the liquid form. Additionally, the complexes in the solid form were characterized with Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD), and transmission electron microscopy (TEM). Furthermore, different eye drops containing EC-CyD complexes were prepared using different polymers and then characterized regarding their drug contents, pH, viscosity, mucoadhesive strength, and in vitro release characteristics. The results showed that stable EC-CyD complexes were formed in 1:1 molar ratio as designated by BS-type diagram. Econazole nitrate water solubility was significantly increased in about three- and fourfold for β-CyD and HP-β-CyD, respectively. The results showed that the prepared complexes were spherical in shape having an average particle diameter from 110 to 288.33 nm with entrapment efficiency ranging from 64.24 to 95.27%. DSC investigations showed the formation of real inclusion complexes obtained with co-precipitation technique. From the in vitro studies, all eye drops containing co-precipitate complexes exhibited higher release rate than that of other complexes and followed the diffusion-controlled mechanism. In vivo study proved that eye drops containing EC-CyD complexes showed higher ocular bioavailability than EC alone which indicated by higher AUC, Cmax, and relative bioavailability values.
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Nanoemulsion-based electrolyte triggered in situ gel for ocular delivery of acetazolamide. Eur J Pharm Sci 2017; 104:302-314. [DOI: 10.1016/j.ejps.2017.04.013] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 03/24/2017] [Accepted: 04/18/2017] [Indexed: 11/18/2022]
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Timur SS, Şahin A, Aytekin E, Öztürk N, Polat KH, Tezel N, Gürsoy RN, Çalış S. Design and in vitro evaluation of tenofovir-loaded vaginal gels for the prevention of HIV infections. Pharm Dev Technol 2017; 23:301-310. [PMID: 28503983 DOI: 10.1080/10837450.2017.1329835] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Infection with the human immunodeficiency virus (HIV) is affecting women disproportionally with increasing incidence rates over the last decades. Tenofovir is one of the most commonly used antiretroviral agents, which belongs to the nucleoside/nucleotide reverse transcriptase inhibitor family, for the prevention of HIV acquisition. In scope of this study, a thermogelling system containing tenofovir-loaded chitosan nanoparticles for the controlled release of tenofovir was developed and characterized. The in vitro release studies have shown that the burst release effect was decreased to 27% with f-TFV CS NPs-Gel. Gelation temperature of developed formulation was found as 26.6 ± 0.2 °C, which provides ease of administration while gelation occurs after the administration to the vagina. The work of adhesion values was used as parameters for comparison of mucoadhesive performance and the mucoadhesion of f-TFV CS NPs-Gel was found as 0.516 ± 0.136 N.s at 37 °C. The biocompatibility of blank formulations was evaluated by cell viability studies using L929 cells, in which Gel + CS NPs formulation was found to be safe with 82.4% and 90.2% cell viability for 1:16 and 1:32 dilutions, respectively. In conclusion, an improved tenofovir containing vaginal gel formulation was successfully developed and evaluated for preventing HIV transmission.
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Affiliation(s)
- Selin Seda Timur
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Hacettepe University , Ankara , Turkey
| | - Adem Şahin
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Hacettepe University , Ankara , Turkey
| | - Eren Aytekin
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Hacettepe University , Ankara , Turkey
| | - Naile Öztürk
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Hacettepe University , Ankara , Turkey
| | - Kerem Heybet Polat
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Hacettepe University , Ankara , Turkey
| | - Nurten Tezel
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Hacettepe University , Ankara , Turkey
| | - Reyhan Neslihan Gürsoy
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Hacettepe University , Ankara , Turkey
| | - Sema Çalış
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Hacettepe University , Ankara , Turkey
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Soliman OAEA, Mohamed EAM, El-Dahan MS, Khatera NAA. Potential Use of Cyclodextrin Complexes for Enhanced Stability, Anti-inflammatory Efficacy, and Ocular Bioavailability of Loteprednol Etabonate. AAPS PharmSciTech 2017; 18:1228-1241. [PMID: 27469220 DOI: 10.1208/s12249-016-0589-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 07/11/2016] [Indexed: 11/30/2022] Open
Abstract
Loteprednol etabonate (LE) is a soft corticosteroid that maintains therapeutic activity with much reduced adverse effects. Yet, its ocular bioavailability is hindered by its poor aqueous solubility. Early attempts of LE complexation with cyclodextrins (CDs) did not involve the study of the effects of various complexation methods on the characteristics of the complexes formed. Formulation of complexes into different delivery systems as well in vitro and in vivo assessments has not been accomplished in the earlier studies. In this study, complexation of LE with each of hydroxypropyl-β-cyclodextrin (HP-β-CD) and β-cyclodextrin (β-CD) by kneading, freeze drying, and co-precipitation was attempted. These complexes were incorporated into gels, drops, and ocuserts using hydroxypropyl methylcellulose (HPMC), methylcellulose (MC), and sodium alginate (ALG). These formulae were examined with respect to drug content, pH, viscosity, in vitro release, and stability for 6 months. Kinetic analysis of release data was done. Selected formulations were assessed for their efficacy in the treatment of ocular allergic conjunctivitis and their ocular bioavailability in rabbits' eyes. All formulations exhibited accepted drug content, pH, and viscosity. The drug release was increased by complexation particularly with HP-β-CD in the order of ocuserts ≥ drops > gels, being the highest for HPMC preparations that also exhibited the greatest stability and anti-inflammatory activity especially in case of LE-HP-β-CD complexes. Ocuserts of co-precipitated LE-HP-β-CD using HPMC (5% w/w) and Carbopol 934P (0.1% w/w) provided a significantly enhanced stability (p < 0.05), ocular anti-inflammatory efficacy (p < 0.05), and ocular bioavailability (p < 0.0001), to be represented as a potential ocular delivery system of LE.
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Azum N, Rub MA, Asiri AM. Interaction of triblock-copolymer with cationic gemini and conventional surfactants: A physicochemical study. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1283510] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Naved Azum
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Malik Abdul Rub
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdullah M. Asiri
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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31
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Liu Y, Gao W, Zhang C, Tang P, Zhao Y, Wu D. Sequential molecule-triggered-release system based on acetylated amylose helix aggregates. Chem Commun (Camb) 2017; 53:10680-10683. [DOI: 10.1039/c7cc05783k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We developed a molecule-triggered-release system based on acetylated amylose helix aggregates, in which the triggered conditions and duration time can be adjusted. The system could even be customized to meet specific demands.
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Affiliation(s)
- Yongchun Liu
- Key Laboratory of Biomedical Information Engineering of the Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
| | - Wei Gao
- Department of Anesthesiology
- The First Affiliated Hospital of Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
| | - Chunhong Zhang
- Key Laboratory of Biomedical Information Engineering of the Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
| | - Peng Tang
- Key Laboratory of Biomedical Information Engineering of the Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
| | - Yuan Zhao
- Department of Anesthesiology
- The First Affiliated Hospital of Xi’an Jiaotong University
- Xi’an 710061
- P. R. China
| | - Daocheng Wu
- Key Laboratory of Biomedical Information Engineering of the Ministry of Education
- School of Life Science and Technology
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
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Triple combination MPT vaginal microbicide using curcumin and efavirenz loaded lactoferrin nanoparticles. Sci Rep 2016; 6:25479. [PMID: 27151598 PMCID: PMC4858693 DOI: 10.1038/srep25479] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 04/19/2016] [Indexed: 11/09/2022] Open
Abstract
We report that a combination of anti-HIV-1 drug efavirenz (EFV), anti-microbial-spermicidal curcumin (Cur) and lactoferrin nanoparticles (ECNPs) act as MPT formulation. These nanoparticles are of well dispersed spherical shape with 40–70 nm size, with encapsulation efficiency of 63 ± 1.9% of Cur & 61.5% ± 1.6 of EFV, significantly higher than that of single drug nanoparticles (Cur, 59 ± 1.34%; EFV: 58.4 ± 1.79). ECNPs were found to be sensitive at pH 5 and 6 and have not effected viability of vaginal micro-flora, Lactobacillus. Studies in rats showed that ECNPs delivers 88–124% more drugs in vaginal lavage as compared to its soluble form, either as single or combination of EFV and Cur. The ECNPs also shows 1.39–4.73 fold lower concentration of absorption in vaginal tissue and plasma compared to soluble EFV + Cur. Furthermore, ECNPs show significant reduction in inflammatory responses by 1.6–3.0 fold in terms of IL-6 and TNF-α in vaginal tissue and plasma compared to soluble EFV + Cur. ECNPs showed improved pharmacokinetics profiles in vaginal lavage with more than 50% of enhancement in AUC, AUMC, Cmax and t1/2 suggesting longer exposure of Cur and EFV in vaginal lavage compared to soluble EFV + Cur. Histopathological analysis of vaginal tissue shows remarkably lower toxicity of ECNPs compared to soluble EFV + Cur. In conclusion, ECNPs are significantly safe and exhibit higher bioavailability thus constitute an effective MPT against HIV.
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Rençber S, Karavana SY, Şenyiğit ZA, Eraç B, Limoncu MH, Baloğlu E. Mucoadhesive in situ gel formulation for vaginal delivery of clotrimazole: formulation, preparation, and in vitro/in vivo evaluation. Pharm Dev Technol 2016; 22:551-561. [PMID: 27055376 DOI: 10.3109/10837450.2016.1163385] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The purpose of this study was to develop a suitable mucoadhesive in situ gel formulation of clotrimazole (CLO) for the treatment of vaginal candidiasis. For this aim, the mixture of poloxamer (PLX) 407 and 188 were used to prepare in situ gels. Hydroxypropyl methylcellulose (HPMC) K100M or E50 was added to in situ gels in 0.5% ratio to improve the mucoadhesive and mechanical properties of formulations and to prolong the residence time in vaginal cavity. After the preparation of mucoadhesive in situ gels; gelation temperature/time, viscosity, mechanical, mucoadhesive, syringeability, spreadibility and rheological properties, in vitro release behavior, and anticandidal activities were determined. Moreover vaginal retention of mucoadhesive in situ gels was investigated with in vivo distribution studies in rats. Based on the obtained results, it was found that gels prepared with 20% PLX 407, 10% PLX 188 and 0.5% HPMC K100M/E50 might be suitable for vaginal administration of CLO. In addition, the results of in vivo distribution studies showed that gel formulations remained on the vaginal mucosa even 24 h after application. In conclusion, the mucoadhesive in situ gels of CLO would be alternative candidate for treatment of vaginal candidiasis since it has suitable gel properties with good vaginal retention.
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Affiliation(s)
- Seda Rençber
- a Department of Pharmaceutical Technology , Ege University , Bornova , Izmir , Turkey
| | - Sinem Yaprak Karavana
- a Department of Pharmaceutical Technology , Ege University , Bornova , Izmir , Turkey
| | - Zeynep Ay Şenyiğit
- a Department of Pharmaceutical Technology , Ege University , Bornova , Izmir , Turkey
| | - Bayri Eraç
- b Department of Pharmaceutical Microbiology, Faculty of Pharmacy , Ege University , Bornova , Izmir , Turkey
| | - Mine Hoşgör Limoncu
- b Department of Pharmaceutical Microbiology, Faculty of Pharmacy , Ege University , Bornova , Izmir , Turkey
| | - Esra Baloğlu
- a Department of Pharmaceutical Technology , Ege University , Bornova , Izmir , Turkey
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Maged A, Mahmoud AA, Ghorab MM. Nano Spray Drying Technique as a Novel Approach To Formulate Stable Econazole Nitrate Nanosuspension Formulations for Ocular Use. Mol Pharm 2016; 13:2951-65. [PMID: 27010795 DOI: 10.1021/acs.molpharmaceut.6b00167] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The effect of using methyl-β-cyclodextrin and hydroxypropyl-β-cyclodextrin as carriers for econazole nitrate nanoparticles prepared by nano spray dryer was explored in this work. Stabilizers, namely, poly(ethylene oxide), polyvinylpyrrolidone k30, poloxamer 407, Tween 80, and Cremophor EL, were used. The nano spray dried formulations revealed almost spherical particles with an average particle size values ranging from 121 to 1565 nm and zeta potential values ranging from -0.8 to -2.5 mV. The yield values for the obtained formulations reached 80%. The presence of the drug in the amorphous state within the nanosuspension matrix system significantly improved drug release compared to that for pure drug. Combination of hydroxypropyl-β-cyclodextrin with Tween 80 achieved an important role for preserving the econazole nanosuspension from aggregation during storage for one year at room temperature as well as improving drug release from the nanosuspension. This selected formulation was suspended in chitosan HCl to increase drug release and bioavailability. The in vivo evaluation on albino rabbit's eyes demonstrated distinctly superior bioavailability of the selected formulation suspended in chitosan compared to its counterpart formulation suspended in buffer and crude drug suspension due to its mucoadhesive properties and nanosize. The nano spray dryer could serve as a one step technique toward formulating stable and effective nanosuspensions.
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Affiliation(s)
- Amr Maged
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt , Cairo, Egypt
| | - Azza A Mahmoud
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt , Cairo, Egypt.,Department of Pharmaceutical Technology, National Research Center , Dokki, Cairo, Egypt
| | - Mahmoud M Ghorab
- Department of Pharmaceutics, Faculty of Pharmacy, Cairo University , Cairo, Egypt
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35
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Russo E, Gaglianone N, Baldassari S, Parodi B, Croce I, Bassi AM, Vernazza S, Caviglioli G. Chitosan-clodronate nanoparticles loaded in poloxamer gel for intra-articular administration. Colloids Surf B Biointerfaces 2016; 143:88-96. [PMID: 26998870 DOI: 10.1016/j.colsurfb.2016.03.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 02/29/2016] [Accepted: 03/09/2016] [Indexed: 11/17/2022]
Abstract
This work was based on the study of an intra-articular delivery system constituted by a poloxamer gel vehiculating clodronate in chitosan nanoparticles. This system has been conceived to obtain a specific and controlled release of clodronate in the joints to reduce the arthritis rheumatoid degenerative effect. Clodronate (CLO) is a first-generation bisphosphonate with anti-inflammatory properties, inhibiting the cytokine and NO secretion from macrophages, therefore causing apoptosis in these cells. This is related to its ability to be metabolized by cells and converted into a cytotoxic intermediate as a non-hydrolysable analogue of ATP. Chitosan (CHI) was used to develop nanosystems, by ionotropic gelation induced by clodronate itself. A fractional factorial experimental design allowed us to obtain nanoparticles, the diameter of which ranged from 200 to 300nm. Glutaraldehyde was used to increase nanoparticle stability and modify the drug release profile. The zeta potential value of crosslinked nanopaparticles was 21.0mV±1.3, while drug loading was 31.0%±5.4 w/w; nanoparticle yield was 18.2%±1.8 w/w, the encapsulation efficiency was 48.8%±9.9 w/w. Nanoparticles were homogenously loaded in a poloxamer sol, and the drug delivery system is produced in-situ after local administration, when sol become gel at physiological temperature. The properties of poloxamer gels containing CHI-CLO nanoparticles, such as viscosity, gelation temperature and drug release properties, were evaluated. In vitro studies were conducted to evaluate the effects of these nanoparticles on a human monocytic cell line (THP1). The results showed that this drug delivery system is more efficient, with respect to the free drug, to counteract the inflammatory process characteristic of several degenerative diseases.
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Affiliation(s)
- E Russo
- Department of Pharmacy, University of Genova, Viale Cembrano 4, 16148 Genova, Italy.
| | - N Gaglianone
- Department of Pharmacy, University of Genova, Viale Cembrano 4, 16148 Genova, Italy
| | - S Baldassari
- Department of Pharmacy, University of Genova, Viale Cembrano 4, 16148 Genova, Italy
| | - B Parodi
- Department of Pharmacy, University of Genova, Viale Cembrano 4, 16148 Genova, Italy
| | - I Croce
- Department of Pharmacy, University of Genova, Viale Cembrano 4, 16148 Genova, Italy
| | - A M Bassi
- Department of Experimental Medicine, General Pathology, University of Genova, Via L.B. Alberti 2, 16132 Genova, Italy
| | - S Vernazza
- Department of Experimental Medicine, General Pathology, University of Genova, Via L.B. Alberti 2, 16132 Genova, Italy
| | - G Caviglioli
- Department of Pharmacy, University of Genova, Viale Cembrano 4, 16148 Genova, Italy
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36
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Mansuri S, Kesharwani P, Jain K, Tekade RK, Jain N. Mucoadhesion: A promising approach in drug delivery system. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.01.011] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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37
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Osmani RAM, Kulkarni PK, Shanmuganathan S, Hani U, Srivastava A, M P, Shinde CG, Bhosale RR. A 32full factorial design for development and characterization of a nanosponge-based intravaginal in situ gelling system for vulvovaginal candidiasis. RSC Adv 2016. [DOI: 10.1039/c5ra26218f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The rationale behind present research effort was to enhance CTZ solubility and efficacyviaforming complex with hydroxypropyl β-cyclodextrin (HP-β-CD) nanosponges.
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Affiliation(s)
- Riyaz Ali M. Osmani
- Department of Pharmaceutics
- JSS College of Pharmacy
- JSS University
- Mysuru-570 015
- India
| | | | - S. Shanmuganathan
- Department of Pharmaceutics
- College of Pharmacy
- Sri Ramchandra University
- Chennai-600 116
- India
| | - Umme Hani
- Department of Pharmaceutics
- JSS College of Pharmacy
- JSS University
- Mysuru-570 015
- India
| | - Atul Srivastava
- Department of Pharmaceutics
- JSS College of Pharmacy
- JSS University
- Mysuru-570 015
- India
| | - Prerana M
- Faculty of Life Science
- JSS University
- Mysuru-570 015
- India
| | - Chetan G. Shinde
- Department of Pharmaceutics
- JSS College of Pharmacy
- JSS University
- Mysuru-570 015
- India
| | - Rohit R. Bhosale
- Department of Pharmaceutics
- JSS College of Pharmacy
- JSS University
- Mysuru-570 015
- India
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Tuğcu-Demiröz F, Acartürk F, Özkul A. Preparation and characterization of bioadhesive controlled-release gels of cidofovir for vaginal delivery. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:1237-55. [PMID: 26300445 DOI: 10.1080/09205063.2015.1082808] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The aim of this study was to develop mucoadhesive and thermosensitive gels for vaginal delivery that would be able to provide a controlled release of the model drug, cidofovir. The study also monitored the drug's potential antiviral properties. Cidofovir was put into the form of a vaginal gel, using mucoadhesive and thermosensitive polymers such as chitosan, Carbopol 974P, HPMC, and poloxamer 407. The physicopharmaceutical properties and stability of the vaginal gel formulations were evaluated. The gel formulation which was prepared with HPMC K100M exhibited the highest viscosity, as well as maximum adhesiveness, cohesiveness, and mucoadhesion values. The results of antiviral activity studies, which used the bovine herpes virus type 1 virus infection in vitro model using Vero cells, demonstrated the antiherpetic effect of the cidofovir gel containing HPMC K100M, at least under in vitro conditions. The study found that a mucoadhesive vaginal gel containing cidofovir can be a promising and innovative alternative therapeutic system for the treatment of genital herpes simplex virus and human papilloma virus induced infections in women.
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Affiliation(s)
- Fatmanur Tuğcu-Demiröz
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Gazi University , 06330-Hipodrom, Ankara , Turkey
| | - Füsun Acartürk
- a Faculty of Pharmacy, Department of Pharmaceutical Technology , Gazi University , 06330-Hipodrom, Ankara , Turkey
| | - Aykut Özkul
- b Faculty of Veterinary Medicine, Department of Virology , Ankara University , Dışkapı, 06110 Ankara , Turkey
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Caramella CM, Rossi S, Ferrari F, Bonferoni MC, Sandri G. Mucoadhesive and thermogelling systems for vaginal drug delivery. Adv Drug Deliv Rev 2015; 92:39-52. [PMID: 25683694 DOI: 10.1016/j.addr.2015.02.001] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 01/29/2015] [Accepted: 02/06/2015] [Indexed: 11/28/2022]
Abstract
This review focuses on two formulation approaches, mucoadhesion and thermogelling, intended for prolonging residence time on vaginal mucosa of medical devices or drug delivery systems, thus improving their efficacy. The review, after a brief description of the vaginal environment and, in particular, of the vaginal secretions that strongly affect in vivo performance of vaginal formulations, deals with the above delivery systems. As for mucoadhesive systems, conventional formulations (gels, tablets, suppositories and emulsions) and novel drug delivery systems (micro-, nano-particles) intended for vaginal administration to achieve either local or systemic effect are reviewed. As for thermogelling systems, poly(ethylene oxide-propylene oxide-ethylene oxide) copolymer-based and chitosan-based formulations are discussed as thermogelling systems. The methods employed for functional characterization of both mucoadhesive and thermogelling drug delivery systems are also briefly described.
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Affiliation(s)
- Carla M Caramella
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Silvia Rossi
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Franca Ferrari
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | | | - Giuseppina Sandri
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
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Palmeira-de-Oliveira R, Palmeira-de-Oliveira A, Martinez-de-Oliveira J. New strategies for local treatment of vaginal infections. Adv Drug Deliv Rev 2015; 92:105-22. [PMID: 26144995 DOI: 10.1016/j.addr.2015.06.008] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 06/15/2015] [Accepted: 06/24/2015] [Indexed: 01/07/2023]
Abstract
Vaginal infections are extremely prevalent, particularly among women of reproductive age. Although they do not result in high mortality rates, these infections are associated with high levels of anxiety and reduction of quality of life. In most cases, topical treatment of vaginal infections has been shown to be at least as effective as oral treatment, resulting in higher local drug concentrations, with fewer drug interactions and adverse effects. Furthermore, the emergence of microbial resistance to chemotherapeutics and the difficulties in managing infection recurrences sustain the need for more effective local treatments. However, conventional dosage forms have been associated with low retention in the vagina and discomfort. Formulation strategies such as the development of bioadhesive, thermogelling systems and microtechnological or nanotechnological approaches have been proposed to improve delivery of traditional drugs, and other treatment modalities such as new drugs, plant extracts, and probiotics are being studied. This article reviews the recent strategies studied to improve the treatment and prevention of the commonest vaginal infections-namely, vaginal bacteriosis, aerobic vaginitis, vulvovaginal candidosis, and trichomoniasis-through the intravaginal route.
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Mohammed NN, Pandey P, Khan NS, Elokely KM, Liu H, Doerksen RJ, Repka MA. Clotrimazole-cyclodextrin based approach for the management and treatment of Candidiasis - A formulation and chemistry-based evaluation. Pharm Dev Technol 2015; 21:619-29. [PMID: 25923135 DOI: 10.3109/10837450.2015.1041041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Clotrimazole (CT) is a poorly soluble antifungal drug that is most commonly employed as a topical treatment in the management of vaginal candidiasis. The present work focuses on a formulation approach to enhance the solubility of CT using cyclodextrin (CD) complexation. A CT-CD complex was prepared by a co-precipitation method. Various characterization techniques such as differential scanning calorimetry, infrared (IR) and X-ray spectroscopy, scanning electron microscopy and nuclear magnetic resonance (NMR) spectroscopy were performed to evaluate the complex formation and to understand the interactions between CT and CD. Computational molecular modeling was performed using the Schrödinger suite and Gaussian 09 program to understand structural conformations of the complex. The phase solubility curve followed an AL-type curve, indicating formation of a 1:1 complex. Molecular docking studies supported the data obtained through NMR and IR studies. Enthalpy changes confirmed that complexation was an exothermic and enthalpically favorable phenomenon. The CT-CD complexes were formulated in a gel and evaluated for release and antifungal activity. The in vitro release studies performed using gels demonstrated a sustained release of CT from the CT-CD complex with the complex exhibiting improved release relative to the un-complexed CT. Complexed CT-CD exhibited better fungistatic activity toward different Candida species than un-complexed CT.
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Affiliation(s)
| | - Pankaj Pandey
- b Division of Medicinal Chemistry, Department of BioMolecular Sciences , School of Pharmacy, University of Mississippi, University , MS , USA
| | - Nayaab S Khan
- c Department of Pharmacology , College of Medicine, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Khaled M Elokely
- b Division of Medicinal Chemistry, Department of BioMolecular Sciences , School of Pharmacy, University of Mississippi, University , MS , USA
| | - Haining Liu
- b Division of Medicinal Chemistry, Department of BioMolecular Sciences , School of Pharmacy, University of Mississippi, University , MS , USA
| | - Robert J Doerksen
- b Division of Medicinal Chemistry, Department of BioMolecular Sciences , School of Pharmacy, University of Mississippi, University , MS , USA .,d National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University , MS , USA , and
| | - Michael A Repka
- a Department of Pharmaceutics and Drug Delivery .,e Pii Center for Pharmaceutical Technology, School of Pharmacy, University of Mississippi, University , MS , USA
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42
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Parhi R, Suresh P, Patnaik S. Formulation optimization of PVA/HPMC cryogel of Diltiazem HCl using 3-level factorial design and evaluation for ex vivo permeation. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2015. [DOI: 10.1007/s40005-015-0179-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Pradines B, Gallard JF, Iorga BI, Gueutin C, Ponchel G, Loiseau PM, Bouchemal K. The unexpected increase of clotrimazole apparent solubility using randomly methylated β-cyclodextrin. J Mol Recognit 2015; 28:96-102. [DOI: 10.1002/jmr.2432] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 07/28/2014] [Accepted: 08/25/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Bénédicte Pradines
- Institut Galien Paris Sud, UMR CNRS 8612; Université Paris-Sud, Faculté de Pharmacie; 5, rue J-B. Clément 92296 Chatenay-Malabry cedex France
- BioCis, Biomolécules : conception, isolement, synthèse-Chimiothérapie Antiparasitaire, UMR CNRS 8076; Université Paris-Sud, Faculté de Pharmacie; 5, rue J-B. Clément 92296 Châtenay-Malabry cedex France
| | - Jean-François Gallard
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301; Centre de Recherche de Gif-sur-Yvette; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Bogdan I. Iorga
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301; Centre de Recherche de Gif-sur-Yvette; 1 Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Claire Gueutin
- Institut Galien Paris Sud, UMR CNRS 8612; Université Paris-Sud, Faculté de Pharmacie; 5, rue J-B. Clément 92296 Chatenay-Malabry cedex France
| | - Gilles Ponchel
- Institut Galien Paris Sud, UMR CNRS 8612; Université Paris-Sud, Faculté de Pharmacie; 5, rue J-B. Clément 92296 Chatenay-Malabry cedex France
| | - Philippe M. Loiseau
- BioCis, Biomolécules : conception, isolement, synthèse-Chimiothérapie Antiparasitaire, UMR CNRS 8076; Université Paris-Sud, Faculté de Pharmacie; 5, rue J-B. Clément 92296 Châtenay-Malabry cedex France
| | - Kawthar Bouchemal
- Institut Galien Paris Sud, UMR CNRS 8612; Université Paris-Sud, Faculté de Pharmacie; 5, rue J-B. Clément 92296 Chatenay-Malabry cedex France
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Park JB, Prodduturi S, Morott J, Kulkarni VI, Jacob MR, Khan SI, Stodghill SP, Repka MA. Development of an antifungal denture adhesive film for oral candidiasis utilizing hot melt extrusion technology. Expert Opin Drug Deliv 2015; 12:1-13. [PMID: 25169007 PMCID: PMC5629914 DOI: 10.1517/17425247.2014.949235] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVES The overall goal of this research was to produce a stable hot-melt extruded 'Antifungal Denture Adhesive film' (ADA) system for the treatment of oral candidiasis. METHODS The ADA systems with hydroxypropyl cellulose (HPC) and/or polyethylene oxide (PEO) containing clotrimazole (10%) or nystatin (10%) were extruded utilizing a lab scale twin-screw hot-melt extruder. Rolls of the antifungal-containing films were collected and subsequently die-cut into shapes adapted for a maxillary (upper) and mandibular (lower) denture. RESULTS Differential scanning calorimeter and powder X-ray diffraction results indicated that the crystallinity of both APIs was changed to amorphous phase after hot-melt extrusion. The ADA system, containing blends of HPC and PEO, enhanced the effectiveness of the antimicrobials a maximum of fivefold toward the inhibition of cell adherence of Candida albicans to mammalian cells/Vero cells. Remarkably, a combination of the two polymers without drug also demonstrated a 38% decrease in cell adhesion to the fungi due to the viscosity and the flexibility of the polymers. Drug-release profiles indicated that both drug concentrations were above the minimum inhibitory concentration (MIC) for C. albicans within 10 min and was maintained for over 10 h. In addition, based on the IC50 and MIC values, it was observed that the antifungal activities of both drugs were increased significantly in the ADA systems. CONCLUSIONS Based on these findings, the ADA system may be used for primary, prophylaxis or adjunct treatment of oral or pharyngeal candidiasis via controlled release of the antifungal agent from the polymer matrix.
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Affiliation(s)
- Jun-Bom Park
- Department of Pharmaceutics, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Suneela Prodduturi
- Department of Pharmaceutics, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Joe Morott
- Department of Pharmaceutics, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Vijay I. Kulkarni
- Department of Pharmaceutics, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Melissa R. Jacob
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Shabana I. Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS, USA
| | - Steven P. Stodghill
- Department of Pharmaceutical, Social & Administrative Sciences, Belmont University College of Pharmacy, 1900 Belmont Boulevard, Nashville, TN, USA
| | - Michael A. Repka
- Department of Pharmaceutics, School of Pharmacy, The University of Mississippi, University, MS, USA,Pii Center for Pharmaceutical Technology, School of Pharmacy, The University of Mississippi, University, MS, USA,Address for correspondence: Michael A. Repka, D.D.S., Ph.D., Professor and Chair, Department of Pharmaceutics, Director, Pii Center for Pharmaceutical Technology, School of Pharmacy, The University of Mississippi, University, MS 38677, Phone: 662-915-1155, Fax: 662-915-1177,
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Gaurav C, Goutam R, Rohan KN, Sweta KT, Abhay CS, Amit GK. In situ stabilized AgNPs and (Cu-Cur)CD dispersed gel, a topical contraceptive antiretroviral (ARV) microbicide. RSC Adv 2015. [DOI: 10.1039/c5ra16353f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Nano silver and (copper-curcumin)β-cyclodextrin based pre-exposure contraceptive-antiretroviral topical prophylaxis.
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Affiliation(s)
- Chauhan Gaurav
- DBT Lab
- Department of Pharmaceutics
- Indo-Soviet Friendship College of Pharmacy
- Moga
- India
| | - Rath Goutam
- DBT Lab
- Department of Pharmaceutics
- Indo-Soviet Friendship College of Pharmacy
- Moga
- India
| | - Kesarkar N. Rohan
- Department of Virology
- Haffkine Institute for Training Research and Testing
- Mumbai
- India
| | - Kothari T. Sweta
- Department of Virology
- Haffkine Institute for Training Research and Testing
- Mumbai
- India
| | - Chowdhary S. Abhay
- Department of Virology
- Haffkine Institute for Training Research and Testing
- Mumbai
- India
| | - Goyal K. Amit
- DBT Lab
- Department of Pharmaceutics
- Indo-Soviet Friendship College of Pharmacy
- Moga
- India
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Dorraj G, Moghimi HR. Preparation of SLN-containing Thermoresponsive In-situ Forming Gel as a Controlled Nanoparticle Delivery System and Investigating its Rheological, Thermal and Erosion Behavior. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2015; 14:347-58. [PMID: 25901142 PMCID: PMC4403051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Various nanoparticles have been investigated as novel drug delivery systems, including solid lipid nanoparticles (SLNs). Due to their rapid clearance from systemic circulation, nanoparticles do not provide sustained action in most cases. Different strategies have been employed to overcome this problem. In this direction, the present study introduces erodible in-situ forming gel systems as potential vehicles for prolonged release of SLNs. SLNs were prepared by solidification of an oil-in-water microemulsion containing stearic acid, surfactants and co-surfactants. Nanoparticles were then dispersed in a thermosensitive Poloxamer 407 aqueous solution (sol) at 4 °C and their effects on gel forming ability, sol-gel transition and rheological behavior of the system were investigated over 5-50 °C. Thermal behavior of the system was investigated by differential scanning calorimetry too. Erosion rate of the gel in the presence and absence of SLN was measured by gravimetric method. Integrity of SLNs in the system was investigated by scanning electron microscopy (SEM) and particle size analysis. SLN showed particle size and zeta potential of 130 ± 1.39 nm and - 44 ± 2.1 mV respectively. Particle size analysis and SEM studies after gel erosion revealed presence of intact SLN in the hydrogel. SLN reduced erosion rate of Poloxamer gel and increased its sol-gel transition temperature from 26 to 29 °C. However, gelling kinetic did not change significantly after addition of SLN. Damping factor <1 indicated stability of the SLN-containing system. Present results indicate potential of sol-gel systems for controlled nanoparticle delivery and show that SLN affects properties of the system.
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Mucoadhesive polymers in the design of nano-drug delivery systems for administration by non-parenteral routes: A review. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2014.07.010] [Citation(s) in RCA: 333] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ozbılgın ND, Saka OM, Bozkır A. Preparation and in vitro/in vivo evaluation of mucosal adjuvant in situ forming gels with diphtheria toxoid. Drug Deliv 2014; 21:140-7. [PMID: 24559517 DOI: 10.3109/10717544.2013.834754] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Studies on preparation of in situ gel formulations containing diphtheria toxoid as the model active substance and their intranasal administration have been conducted in this study. The objective of mucosal vaccination is to stimulate both systemic and mucosal immune responses. In situ gel formulations were prepared by using, in different ratios, mixtures of Poloxamer 407 and Poloxamer 188 polymers, which gelate in a temperature-dependent manner, and mucoadhesive polymers carbopol 934, hydroxypropyl methyl cellulose, hydroxypropyl cellulose or chitosan. Following pre-formulation studies, F1, F2, F3, F4, F5, F6 and F7 formulations, which gelate at intervals and temperatures in accordance with nasal temperatures, were subjected to more comprehensive studies. For this purpose, organoleptic characteristics of the formulations were identified, their pH and mucoadhesive potencies were measured and rheological behaviors were characterized. Calculated amounts of diphtheria toxoid were added to formulations after optimization of formulations was achieved, and assay and in vitro release studies were carried out. Formulations coded F3 and F7 were considered to be superior to other formulations given the in vitro test results. Therefore, these formulations were tested in guinea pigs to determine immune responses, which they would produce following intranasal and subcutaneous administration. Absorbance values of ELISA tests and antibody neutralization test showed that formulations coded F3 and F7 were unable to stimulate adequate systemic immune response when either of the formulations was administered alone intranasally, whereas F7 resulted in significantly increased neutralizing antibody titers with intranasal administration as a booster dose following subcutaneous administration.
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Affiliation(s)
- Nalan Deniz Ozbılgın
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University , Ankara , Turkey
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Johal HS, Garg T, Rath G, Goyal AK. Advanced topical drug delivery system for the management of vaginal candidiasis. Drug Deliv 2014; 23:550-63. [DOI: 10.3109/10717544.2014.928760] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Jøraholmen MW, Vanić Z, Tho I, Skalko-Basnet N. Chitosan-coated liposomes for topical vaginal therapy: assuring localized drug effect. Int J Pharm 2014; 472:94-101. [PMID: 24928137 DOI: 10.1016/j.ijpharm.2014.06.016] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 06/02/2014] [Accepted: 06/08/2014] [Indexed: 01/15/2023]
Abstract
The choice of drug therapy in pregnant patients suffering from vaginal infections is limited by the safety profile of the drug. Assuring the efficient topical therapy to avoid systemic absorption is considered the best therapy option. Chitosan-coated liposomes have been developed and optimized to assure localized therapy of clotrimazole. Chitosan was selected as mucoadhesive polymer both to prolong system's retention at the vaginal site and act on biofilms responsible for high recurrence of infections. Sonicated liposomes were coated with chitosan in three different concentrations, namely 0.1, 0.3 and 0.6% (w/v). Clotrimazole-containing (22 μg/mg lipid) chitosan-coated liposomes were in the size range of 100-200 nm. The in vitro release studies confirmed prolonged release of clotrimazole from both non-coated and chitosan-coated liposomes as compared to control. The ex vivo penetration experiments performed on the pregnant sheep vaginal tissue showed that coated liposomes assured increased clotrimazole tissue retention and reduced its penetration as compared to the control. Mucin studies revealed that the coating with lower chitosan concentration increased the system's mucoadhesive potential, as compared to coating with higher concentrations. These results provide a good platform for further in vivo animal studies on mucoadhesive liposomes destined to localized vaginal therapy.
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Affiliation(s)
- May Wenche Jøraholmen
- University of Tromsø, Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, Universitetsveien 57, Tromsø 9037, Norway
| | - Zeljka Vanić
- University of Zagreb, Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, A. Kovačića 1, Zagreb 10000, Croatia
| | - Ingunn Tho
- University of Tromsø, Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, Universitetsveien 57, Tromsø 9037, Norway
| | - Nataša Skalko-Basnet
- University of Tromsø, Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, Universitetsveien 57, Tromsø 9037, Norway.
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