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Noureen S, Noreen S, Ghumman SA, Abdelrahman EA, Batool F, Aslam A, Mehdi M, Shirinfar B, Ahmed N. A novel pH-responsive hydrogel system based on Prunus armeniaca gum and acrylic acid: Preparation and evaluation as a potential candidate for controlled drug delivery. Eur J Pharm Sci 2023; 189:106555. [PMID: 37543064 DOI: 10.1016/j.ejps.2023.106555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/04/2023] [Accepted: 08/03/2023] [Indexed: 08/07/2023]
Abstract
pH-responsive hydrogels have become effective and attractive materials for the controlled release of drugs at pre-determined destinations. In the present study, a novel hydrogel system based on Prunus armeniaca gum (PAG) and acrylic acid (AA) was prepared by a free radical mechanism using N, N-methylene bisacrylamide (MBA) as cross-linker and potassium persulfate (KPS) as initiator. A series of hydrogels varying PAG, AA, and MBA concentration was developed to determine the impact of these components. Formulated hydrogels were characterized for pH-responsive swelling, drug release, gel content, and porosity. Structural analysis was performed by FTIR, XRD, and SEM analysis. TGA study was applied to assess thermal stability. Oral acute toxicity and in vivo drug release were performed in rabbits. Hydrogels exhibited pH-dependent swelling and drug release. Swelling, drug loading and release, and porosity increased by increasing PAG and AA concentration while decreased by increasing MBA. The gel content of formulations was increased by increasing all three components. FTIR studies confirmed the development of copolymeric networks and the loading of drug. XRD studies revealed that hydrogels were amorphous, and the crystalline drug was changed into an amorphous form during loading. TGA results indicated that hydrogels were stable up to 600 °C. Acute oral toxicity results confirm that hydrogels were nontoxic up to a dose of 2 g/kg body weight in rabbits. The pharmacokinetic evaluation revealed that hydrogels prolonged the availability of the drug and the peak plasma concentration of the drug was obtained in 6 h as compared to the oral solution of the drug. Tramadol hydrochloride (THC) was used as a model drug. Hence, pH-responsive swelling and release, nontoxic nature and improved pharmacokinetics support that PAG-based hydrogels may be considered as potential controlled-release polymeric carriers.
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Affiliation(s)
- Shazia Noureen
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Sobia Noreen
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan.
| | | | - Ehab A Abdelrahman
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia; Chemistry Department, Faculty of Science, Benha University, Benha 13518, Egypt
| | - Fozia Batool
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Afeefa Aslam
- Department Of Pharmacy, Comsats University, Abbottabad 22020, Pakistan
| | - Muhammad Mehdi
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Bahareh Shirinfar
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Nisar Ahmed
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom.
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Pratap-Singh A, Guo Y, Baldelli A, Singh A. Concept for a Unidirectional Release Mucoadhesive Buccal Tablet for Oral Delivery of Antidiabetic Peptide Drugs Such as Insulin, Glucagon-like Peptide 1 (GLP-1), and their Analogs. Pharmaceutics 2023; 15:2265. [PMID: 37765234 PMCID: PMC10534625 DOI: 10.3390/pharmaceutics15092265] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/11/2023] [Accepted: 08/12/2023] [Indexed: 09/29/2023] Open
Abstract
Injectable peptides such as insulin, glucagon-like peptide 1 (GLP-1), and their agonists are being increasingly used for the treatment of diabetes. Currently, the most common route of administration is injection, which is linked to patient discomfort as well as being subjected to refrigerated storage and the requirement for efficient supply chain logistics. Buccal and sublingual routes are recognized as valid alternatives due to their high accessibility and easy administration. However, there can be several challenges, such as peptide selection, drug encapsulation, and delivery system design, which are linked to the enhancement of drug efficacy and efficiency. By using hydrophobic polymers that do not dissolve in saliva, and by using neutral or positively charged nanoparticles that show better adhesion to the negative charges generated by the sialic acid in the mucus, researchers have attempted to improve drug efficiency and efficacy in buccal delivery. Furthermore, unidirectional films and tablets seem to show the highest bioavailability as compared to sprays and other buccal delivery vehicles. This advantageous attribute can be attributed to their capability to mitigate the impact of saliva and inadvertent gastrointestinal enzymatic digestion, thereby minimizing drug loss. This is especially pertinent as these formulations ensure a more directed drug delivery trajectory, leading to heightened therapeutic outcomes. This communication describes the current state of the art with respect to the creation of nanoparticles containing peptides such as insulin, glucagon-like peptide 1 (GLP-1), and their agonists, and theorizes the production of mucoadhesive unidirectional release buccal tablets or films. Such an approach is more patient-friendly and can improve the lives of millions of diabetics around the world; in addition, these shelf-stable formulations ena a more environmentally friendly and sustainable supply chain network.
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Affiliation(s)
- Anubhav Pratap-Singh
- Food, Nutrition, and Health Program, Faculty of Land & Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Yigong Guo
- Food, Nutrition, and Health Program, Faculty of Land & Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, BC V6T 1Z4, Canada
- Natural Health and Food Products Research Group, Centre for Applied Research & Innovation (CARI), British Columbia Institute of Technology, Burnaby, BC V5G 3H2, Canada
| | - Alberto Baldelli
- Food, Nutrition, and Health Program, Faculty of Land & Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Anika Singh
- Food, Nutrition, and Health Program, Faculty of Land & Food Systems, The University of British Columbia, 2205 East Mall, Vancouver, BC V6T 1Z4, Canada
- Natural Health and Food Products Research Group, Centre for Applied Research & Innovation (CARI), British Columbia Institute of Technology, Burnaby, BC V5G 3H2, Canada
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Qureshi AUR, Arshad N, Rasool A, Islam A, Rizwan M, Haseeb M, Rasheed T, Bilal M. Chitosan and carrageenan‐based biocompatible hydrogel platforms for cosmeceutical, drug delivery and biomedical applications. STARCH-STARKE 2022. [DOI: 10.1002/star.202200052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Nasima Arshad
- School of Chemistry University of the Punjab Lahore 54590 Pakistan
| | - Atta Rasool
- School of Chemistry University of the Punjab Lahore 54590 Pakistan
| | - Atif Islam
- Department of Polymer Engineering and Technology University of the Punjab Lahore 54590 Pakistan
| | - Muhammad Rizwan
- Department of Chemistry The University of Lahore Lahore 54000 Pakistan
| | - Muhammad Haseeb
- Department of Chemistry The University of Lahore Lahore 54000 Pakistan
| | - Tahir Rasheed
- Interdisciplinary Research Center for Advanced Materials King Fahd University of Petroleum and Minerals (KFUPM) Dhahran 31261 Saudi Arabia
| | - Muhammad Bilal
- School of Life Science and Food Engineering Huaiyin Institute of Technology Huai'an 223003 China
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Raghuvanshi A, Shah K, Dewangan HK. Ethosome as Antigen Delivery Carrier: Optimization, Evaluation and Induction of Immunological Response via Nasal Route Against Hepatitis B. J Microencapsul 2022; 39:352-363. [DOI: 10.1080/02652048.2022.2084169] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Akash Raghuvanshi
- Shri Ram Health Care Pvt, 81-C/2, EPIP-1, Jharmajri, Baddi, Distt- Solan (India)
| | - Kamal Shah
- Institute of Pharmaceutical Research (IPR), GLA University, Mathura, NH-2, Mathura Delhi Road, Chaumuhan Mathura, Uttar Pradesh (India)
| | - Hitesh Kumar Dewangan
- University Institute of Pharma Sciences (UIPS), Chandigarh University NH-95, Chandigarh Ludhiana Highway, Mohali Punjab (India)
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Ajaz N, Khan IU, Irfan M, Khalid SH, Asghar S, Mehmood Y, Asif M, Usra, Hussain G, Shahzad Y, Shah SU, Munir MU. In Vitro and Biological Characterization of Dexamethasone Sodium Phosphate Laden pH-Sensitive and Mucoadhesive Hydroxy Propyl β-Cyclodextrin-g-poly(acrylic acid)/Gelatin Semi-Interpenetrating Networks. Gels 2022; 8:290. [PMID: 35621588 PMCID: PMC9140464 DOI: 10.3390/gels8050290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 04/25/2022] [Accepted: 04/29/2022] [Indexed: 11/16/2022] Open
Abstract
The current study reports the fabrication and biological evaluation of hydroxy propyl β-cyclodextrin-g-poly(acrylic acid)/gelatin (HP-β-CD-g-poly(AA)/gelatin) semi-interpenetrating networks (semi-IPN) for colonic delivery of dexamethasone sodium phosphate (DSP). The prepared hydrogels showed pH-dependent swelling and mucoadhesive properties. The mucoadhesive strength of hydrogels increased with an increasing concentration of gelatin. Based on the swelling and mucoadhesive properties, AG-1 was chosen as the optimized formulation (0.33% w/w of gelatin and 16.66% w/w of AA) for further analysis. FTIR revealed the successful development of a polymeric network without any interaction with DSP. SEM images revealed a slightly rough surface after drug loading. Drug distribution at the molecular level was confirmed by XRD. In vitro drug release assay showed pH-dependent release, i.e., a minute amount of DSP was released at a pH of 1.2 while 90.58% was released over 72 h at pH 7.4. The optimized formulation did not show any toxic effects on a rabbit's vital organs and was also hemocompatible, thus confirming the biocompatible nature of the hydrogel. Conclusively, the prepared semi-IPN hydrogel possessed the necessary features, which can be exploited for the colonic delivery of DSP.
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Affiliation(s)
- Nyla Ajaz
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan; (N.A.); (I.U.K.); (M.I.); (S.H.K.); (S.A.); (Y.M.)
| | - Ikram Ullah Khan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan; (N.A.); (I.U.K.); (M.I.); (S.H.K.); (S.A.); (Y.M.)
| | - Muhammad Irfan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan; (N.A.); (I.U.K.); (M.I.); (S.H.K.); (S.A.); (Y.M.)
| | - Syed Haroon Khalid
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan; (N.A.); (I.U.K.); (M.I.); (S.H.K.); (S.A.); (Y.M.)
| | - Sajid Asghar
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan; (N.A.); (I.U.K.); (M.I.); (S.H.K.); (S.A.); (Y.M.)
| | - Yasir Mehmood
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad 38000, Pakistan; (N.A.); (I.U.K.); (M.I.); (S.H.K.); (S.A.); (Y.M.)
| | - Muhammad Asif
- Department of Pharmacology, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan;
| | - Usra
- Department of Physiology, Government College University Faisalabad, Faisalabad 38000, Pakistan; (U.); (G.H.)
| | - Ghulam Hussain
- Department of Physiology, Government College University Faisalabad, Faisalabad 38000, Pakistan; (U.); (G.H.)
| | - Yasser Shahzad
- Department of Pharmacy, COMSATS University Islamabad, Lahore Campus, Lahore 54700, Pakistan;
| | - Shefaat Ullah Shah
- Skin/Regenerative Medicine and Drug Delivery Research, GCPS, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan;
| | - Muhammad Usman Munir
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka 72388, Saudi Arabia
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Borrajo ML, Alonso MJ. Using nanotechnology to deliver biomolecules from nose to brain - peptides, proteins, monoclonal antibodies and RNA. Drug Deliv Transl Res 2022; 12:862-880. [PMID: 34731414 PMCID: PMC8888512 DOI: 10.1007/s13346-021-01086-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/20/2021] [Indexed: 02/06/2023]
Abstract
There is a growing number of biomolecules, including peptides, proteins, monoclonal antibodies and RNA, that could be potentially used for the treatment of central nervous system (CNS) diseases. However, the realization of their potential is being hampered by the extraordinary difficulties these complex biomolecules have to reach the brain in therapeutically meaningful amounts. Nose-to-brain (N-to-B) delivery is now being investigated as a potential option for the direct transport of biomolecules from the nasal cavity to different brain areas. Here, we discuss how different technological approaches enhance this N-to-B transport, with emphasis on those that have shown a potential for clinical translation. We also analyse how the physicochemical properties of nanocarriers and their modification with cell-penetrating peptides (CPPs) and targeting ligands affect their efficacy as N-to-B carriers for biomolecules.
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Affiliation(s)
- Mireya L Borrajo
- Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Universidade de Santiago de Compostela, Av. Barcelona s/n, Campus Vida, 15782, Santiago de Compostela, Spain
| | - María José Alonso
- Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Universidade de Santiago de Compostela, Av. Barcelona s/n, Campus Vida, 15782, Santiago de Compostela, Spain.
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
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A P, Agrawal M, Dethe MR, Ahmed H, Yadav A, Gupta U, Alexander A. Nose-to-brain drug delivery for the treatment of Alzheimer's Disease: Current advancements and challenges. Expert Opin Drug Deliv 2022; 19:87-102. [PMID: 35040728 DOI: 10.1080/17425247.2022.2029845] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION The irreversible destruction of neurons, progressive loss of memory and cognitive behavior, high cost of therapy, and impact on society desire a better, effective, and affordable treatment of AD. The nose-to-brain drug delivery approach holds a great potential to access the brain without any hindrance of BBB and result in higher bioavailability thus better therapeutic efficacy of anti-AD drugs. AREAS COVERED The present review article highlighted the current facts and worldwide statistics of AD and its detailed etiology. Followed by barriers to brain delivery, nose-to-brain delivery, their limitations, and amalgamation with various novel carrier systems. We have emphasized recent advancements in nose-to-brain delivery using mucoadhesive, stimuli-responsive carriers, polymeric nanoparticles, lipid nanoparticles, protein/peptide delivery for treatment of AD. EXPERT OPINION The available therapies are symptomatic, mitigate the symptoms of AD at the initial stages. In this lieu, nose-to-brain delivery has the ability to overcome these limitations and increase drug bioavailability in the brain. Various novel strategies including stimuli-responsive systems, nanoparticles, etc. enhance the nasal drug permeation, protects the drug, and enhance its therapeutic potency. Although, successful preclinical data does not assure the clinical success of the therapy and hence exhaustive clinical investigations are needed to make the therapy available for patients.
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Affiliation(s)
- Prabakaran A
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Sila, Changsari, Kamrup, Guwahati, Assam, India, 781101
| | - Mukta Agrawal
- School of Pharmacy & Technology Management, SVKM's Narsee Monjee Institute of Management Studies (NMIMS), Hyderabad, India, 509301
| | - Mithun Rajendra Dethe
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Sila, Changsari, Kamrup, Guwahati, Assam, India, 781101
| | - Hafiz Ahmed
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Sila, Changsari, Kamrup, Guwahati, Assam, India, 781101
| | - Awesh Yadav
- National Institute of Pharmaceutical Education and Research, Raebareli, Uttar Pradesh, India, 226002
| | - Umesh Gupta
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Ajmer, Rajasthan, India, 305817
| | - Amit Alexander
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER-Guwahati), Sila, Changsari, Kamrup, Guwahati, Assam, India, 781101
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8
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Goel H, Kalra V, Verma SK, Dubey SK, Tiwary AK. Convolutions in the rendition of nose to brain therapeutics from bench to bedside: Feats & fallacies. J Control Release 2021; 341:782-811. [PMID: 34906605 DOI: 10.1016/j.jconrel.2021.12.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 12/05/2021] [Accepted: 12/06/2021] [Indexed: 12/24/2022]
Abstract
Brain, a subtle organ of multifarious nature presents plethora of physiological, metabolic and bio-chemical convolutions that impede the delivery of biomolecules and thereby resulting in truncated therapeutic outcome in pathological conditions of central nervous system (CNS). The absolute bottleneck in the therapeutic management of such devastating CNS ailments is the BBB. Another pitfall is the lack of efficient technological platforms (due to high cost and low approval rates) as well as limited clinical trials (due to failures of neuro‑leads in late-stage pipelines) for CNS disorders which has become a literal brain drain with poorest success rates compared to other therapeutic areas, owing to time consuming processes, tremendous convolutions and conceivable adverse effects. With the advent of intranasal delivery (via direct N2B or indirect nose to blood to brain), several novel drug delivery carriers viz. unmodified or surface modified nanoparticle based carriers, lipid based colloidal nanocarriers and drysolid/liquid/semisolid nanoformulations or delivery platforms have been designed as a means to deliver therapeutic agents (small and large molecules, peptides and proteins, genes) to brain, bypassing BBB for disorders such as Alzheimer's disease (AD), Parkinson's disease (PD), epilepsy, schizophrenia and CNS malignancies primarily glioblastomas. Intranasal application offers drug delivery through both direct and indirect pathways for the peripherally administered psychopharmacological agents to CNS. This route could also be exploited for the repurposing of conventional drugs for new therapeutic uses. The limited clinical translation of intranasal formulations has been primarily due to existence of barriers of mucociliary clearance in the nasal cavity, enzyme degradation and low permeability of the nasal epithelium. The present review literature aims to decipher the new paradigms of nano therapeutic systems employed for specific N2B drug delivery of CNS drugs through in silico complexation studies using rationally chosen mucoadhesive polymers (exhibiting unique physicochemical properties of nanocarrier's i.e. surface modification, prolonging retention time in the nasal cavity, improving penetration ability, and promoting brain specific delivery with biorecognitive ligands) via molecular docking simulations. Further, the review intends to delineate the feats and fallacies associated with N2B delivery approaches by understanding the physiological/anatomical considerations via decoding the intranasal drug delivery pathways or critical factors such as rationale and mechanism of excipients, affecting the permeability of CNS drugs through nasal mucosa as well as better efficacy in terms of brain targeting, brain bioavailability and time to reach the brain. Additionally, extensive emphasis has also been laid on the innovative formulations under preclinical investigation along with their assessment by means of in vitro /ex vivo/in vivo N2B models and current characterization techniques predisposing an efficient intranasal delivery of therapeutics. A critical appraisal of novel technologies, intranasal products or medical devices available commercially has also been presented. Finally, it could be warranted that more reminiscent pharmacokinetic/pharmacodynamic relationships or validated computational models are mandated to obtain effective screening of molecular architecture of drug-polymer-mucin complexes for clinical translation of N2B therapeutic systems from bench to bedside.
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Affiliation(s)
- Honey Goel
- Department of Pharmaceutics, University Institute of Pharmaceutical Sciences and Research, Baba Farid University of Health Sciences, Faridkot, Punjab, India.
| | - Vinni Kalra
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, India
| | - Sant Kumar Verma
- Department of Pharmaceutical Chemistry, Indo-Soviet Friendship College of Pharmacy, Moga, Punjab, India
| | | | - Ashok Kumar Tiwary
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, India.
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Incorporation of Ursolic Acid in Liquid Crystalline Systems Improves the Antifungal Activity Against Candida Sp. J Pharm Innov 2021. [DOI: 10.1007/s12247-020-09470-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Exploring micellar-based polymeric systems for effective nose-to-brain drug delivery as potential neurotherapeutics. Drug Deliv Transl Res 2021; 10:1019-1031. [PMID: 31858442 DOI: 10.1007/s13346-019-00702-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Non-invasive nose-to-brain delivery presents a competitive strategy for effective drug targeting. This strategy can potentially evade the blood-brain barrier (BBB) depending on the pathway the drug and/or drug/micelle composite travels, thereby allowing direct drug delivery to the brain. This delivery strategy was employed for lurasidone, a clinically USFDA-approved neurotherapeutic molecule in bipolar disorders and schizophrenia treatments. The aim of this study was to develop mixed polymeric micelles of lurasidone HCl (LH) for targeted brain delivery via intranasal route. Lurasidone HCl-loaded mixed micelles (LHMM) were prepared by solvent evaporation method and optimized by 32 factorial design to quantify the effects of excipients on micelle size and entrapment efficiency. Fourier transform infrared spectroscopy helped in scrutinizing drug-excipient interactions whereas transmission electron microscopy images showed particle size and shape. Further, LHMM and LHMM hydrogel were evaluated for in vitro diffusion, histopathology, ex vivo permeation, in vivo pharmacokinetics and stability studies. Optimized LHMM exhibited 175 nm particle size and 97.8% entrapment efficiency with improved in vitro drug diffusion (81%). LHMM hydrogel showed 79% ex vivo drug permeation without any significant signs of nasociliary toxicity to sheep nasal mucosa. Single dose in vivo pharmacokinetic studies showed improved therapeutic concentration of drug in the brain post intranasal administration with 9.5 ± 0.21 μg/mL Cmax and T1/2 of 19.1 ± 0.08 h as compared to pure drug. LHMM, when administered by intranasal route, demonstrated significant increase in the drug targeting efficiency as well as potential (%DTE and %DTP) of drug as compared to pure lurasidone. Thus, nanosized mixed micelles were useful in effective brain delivery of lurasidone HCl via intranasal route. Graphical abstract.
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Modi D, Mohammad, Warsi MH, Garg V, Bhatia M, Kesharwani P, Jain GK. Formulation development, optimization, and in vitro assessment of thermoresponsive ophthalmic pluronic F127-chitosan in situ tacrolimus gel. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1678-1702. [PMID: 34013840 DOI: 10.1080/09205063.2021.1932359] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
To overcome problems associated with topical delivery of tacrolimus (TCS), a thermoresponsive in situ gel system containing pluronic F127 (PL), and chitosan (CS) was developed, to enhance the precorneal retention, and to sustain the release of the drug. The PL-CS in situ gel was optimized using a 2-factor-3-level central composite experimental design by selecting the concentration of PL and CS as independent variables while gelation time, gelation temperature, and spreadability as dependent variables. The optimized formulation was developed using 22.5 g PL and 0.3 g CS, gels at 33.6 °C, in 22.93 s, and showed the spreadability of 6.2 cm. In vitro studies conducted for the optimized gel revealed the sustained release of TCS (81.73% in 4 h) and improved corneal permeation (74.13% in 4 h), compared with TCS solution. The mechanism of release of TCS followed the Higuchi model with Fickian diffusion transport. Further, histopathology and HET-CAM studies revealed that the developed gel was non-irritating and safe for ocular administration.
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Affiliation(s)
- Deepika Modi
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Mohammad
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, Delhi, India
| | - Musarrat H Warsi
- Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy, Taif University, Taif-Al-Haweiah, Saudi Arabia
| | - Vaidehi Garg
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, Delhi, India
| | - Meenakshi Bhatia
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, Delhi, India
| | - Gaurav K Jain
- Department of Pharmaceutics, Delhi Pharmaceutical Science and Research University, New Delhi, Delhi, India
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Oliveira DAJ, Amaral JG, Garcia LB, Dos Santos MS, Silva LAO, Almeida MP, Gomes AF, Barros DRP, Lopes NP, Pereira GR, Dos Santos ODH, Ruela ALM. Associating chitosan and microemulsion as a topical vehicle for the administration of herbal medicines. Carbohydr Polym 2020; 255:117482. [PMID: 33436242 DOI: 10.1016/j.carbpol.2020.117482] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 10/20/2020] [Accepted: 12/01/2020] [Indexed: 11/20/2022]
Abstract
A viscous solution of low molecular weight chitosan (CH) at 5% w/v (10.2 kDa, 75 % deacetylated, 1451 cP at 25 °C) was associated with a microemulsion (ME) that undergoes a phase transition after water absorption in situ (≈28 % w/w), forming a more viscous liquid crystal, which was potentially evaluated as a topical vehicle. The ME was selected from a phase diagram, selecting a composition based on Tween® 80 (52 %), myristate isopropyl (28 %), and the aqueous phase (water and polyethylene glycol 400, 60:40 w/w) (20 %), which was after replaced by CH and herbal medicines (HM). HM are alternatives to treat candidiasis, and Stryphnodendron adstringens shell extract, characterized by molecular networking, and Melaleuca alternifolia Chell essential oil (46 % of terpinen-4-ol), showed in vitro activity against Candida albicans. Associating CH in ME improved the mechanical properties of the topical formulation, as adhesiveness, which is an advantageous feature for the topical treatment of vulvovaginal candidiasis.
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Affiliation(s)
- Denise A J Oliveira
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Juliano G Amaral
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Laryana B Garcia
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Milena S Dos Santos
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Lorena A O Silva
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Maiara P Almeida
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Angélica F Gomes
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Danielle R P Barros
- Núcleo de Pesquisa em Produtos Naturais e Sintéticos (NPPNS), Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Norberto P Lopes
- Núcleo de Pesquisa em Produtos Naturais e Sintéticos (NPPNS), Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Gislaine R Pereira
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Alfenas, Minas Gerais, Brazil.
| | - Orlando D H Dos Santos
- Escola de Farmácia, Universidade Federal de Ouro Preto, 35400-000, Ouro Preto, Minas Gerais, Brazil.
| | - André L M Ruela
- Escola de Farmácia, Universidade Federal de Ouro Preto, 35400-000, Ouro Preto, Minas Gerais, Brazil.
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Pérez-González GL, Villarreal-Gómez LJ, Olivas-Sarabia A, Valdez R, Cornejo-Bravo JM. Development, characterization, and in vitro assessment of multilayer mucoadhesive system containing dexamethasone sodium phosphate. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1798433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Graciela Lizeth Pérez-González
- Facultad de Ciencias de la Ingeniería y Tecnología, Universidad Autónoma de Baja California, Unidad Valle de las Palmas, Tijuana, México
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Calzada Universidad 14418 Parque Industrial Internacional, Tijuana, México
| | - Luis Jesús Villarreal-Gómez
- Facultad de Ciencias de la Ingeniería y Tecnología, Universidad Autónoma de Baja California, Unidad Valle de las Palmas, Tijuana, México
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Calzada Universidad 14418 Parque Industrial Internacional, Tijuana, México
| | - Amelia Olivas-Sarabia
- Centro de Nanociencias y Nanotecnología, Universidad Autónoma de México, Ensenada, México
| | - Ricardo Valdez
- Centro de Nanociencias y Nanotecnología, Universidad Autónoma de México, Ensenada, México
| | - José Manuel Cornejo-Bravo
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Calzada Universidad 14418 Parque Industrial Internacional, Tijuana, México
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14
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Shah P, Sarolia J, Vyas B, Wagh P, Ankur K, Kumar MA. PLGA nanoparticles for nose to brain delivery of Clonazepam: formulation, optimization by 32 Factorial design, in vitro and in vivo evaluation. Curr Drug Deliv 2020; 18:805-824. [PMID: 32640955 DOI: 10.2174/1567201817666200708115627] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 04/20/2020] [Accepted: 05/12/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Intranasal administration of biodegradable nanoparticles has been extensively studied for targeting the drug directly to CNS through olfactory or trigeminal route bypassing blood brain barrier. OBJECTIVE The objective of the present study was to optimize Clonazepam loaded PLGA nanoparticles (CLO-PNPs) by investigating the effect of process variables on the responses using 32 full factorial design. METHODS Effect of two independent factors-amount of PLGA and concentration of Poloxamer 188, were studied at low, medium and high levels on three dependent responses-%Entrapment efficiency, Particle size (nm) and %cumulative drug release at 24hr. RESULTS %EE, Particle size and %CDR at 24hr of optimized batch was 63.7%, 165.1 nm and 86.96% respectively. Nanoparticles were radiolabeled with 99mTc and biodistribution was investigated in BALB/c mice after intranasal & intravenous administrations. Significantly higher brain/blood uptake ratios and AUC values in brain following intranasal administration of CLO-PNPs indicated more effective brain targeting of CLO. Higher brain uptake of intranasal CLO-PNPs was confirmed by rabbit brain scintigraphy imaging. Histopathological study performed on goat nasal mucosa revealed no adverse response of nanoparticles. TEM image exhibited spherical shaped particles in nano range. DSC and XRD studies suggested Clonazepam encapsulation within PLGA matrix. The onset of occurrence of PTZ-induced seizures in rats was significantly delayed by intranasal nanoparticles as compared to intranasal & intravenous CLO-SOL. CONCLUSION This investigation exhibits rapid rate and higher extent of CLO transport in brain with intranasal CLO-PNPs suggesting a better option as compared to oral & parenteral route in management of acute status epilepticus.
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Affiliation(s)
- Pranav Shah
- Maliba Pharmacy College, Bardoli Mahuva Road, Dist. Surat, Gujarat. India
| | - Jayant Sarolia
- Maliba Pharmacy College, Bardoli Mahuva Road, Dist. Surat, Gujarat. India
| | - Bhavin Vyas
- Maliba Pharmacy College, Bardoli Mahuva Road, Dist. Surat, Gujarat. India
| | - Priti Wagh
- Maliba Pharmacy College, Bardoli Mahuva Road, Dist. Surat, Gujarat. India
| | - Kaul Ankur
- Division of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Ministry of Defence, Brig. S. K. Mazumdar Marg, New Delhi -110 054. India
| | - Mishra Anil Kumar
- Division of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Ministry of Defence, Brig. S. K. Mazumdar Marg, New Delhi -110 054. India
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15
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Al Harthi S, Alavi SE, Radwan MA, El Khatib MM, AlSarra IA. Nasal delivery of donepezil HCl-loaded hydrogels for the treatment of Alzheimer's disease. Sci Rep 2019; 9:9563. [PMID: 31266990 PMCID: PMC6606601 DOI: 10.1038/s41598-019-46032-y] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 06/17/2019] [Indexed: 11/29/2022] Open
Abstract
This study aims to prepare, characterize and evaluate the pharmacokinetics of liposomal donepezil HCl (LDH) dispersed into thiolated chitosan hydrogel (TCH) in rabbits. Various hydrogels including TCH were prepared, and after characterization, TCH was selected for subsequent evaluations, due to the promising results. TCH was then incorporated with LDH prepared by reverse phase evaporation method. The hydrogel was characterized using scanning electron microscope, dialysis membrane technique, and ultra-performance liquid chromatography methods. The optimized resultant was then evaluated in terms of pharmacokinetics in an in vivo environment. The mean size of LDH and drug entrapment efficiency were 438.7 ± 28.3 nm and 62.5% ± 0.6, respectively. The controlled drug release pattern results showed that the half-life of the loaded drug was approximately 3.5 h. Liposomal hydrogel and free liposomes were more stable at 4 °C compared to those in 20 °C. The pharmacokinetics study in the rabbit showed that the optimized hydrogel increased the mean peak drug concentration and area under the curve by 46% and 39%, respectively, through nasal route compared to the oral tablets of DH. Moreover, intranasal delivery of DH through liposomal hydrogel increased the mean brain content of the drug by 107% compared to the oral DH tablets. The results suggested that liposomes dispersed into TCH is a promising device for the nasal delivery of DH and can be considered for the treatment of Alzheimer's disease.
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Affiliation(s)
- Sitah Al Harthi
- Department of Pharmaceutical Science, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
- Department of Pharmaceutical Science, College of Pharmacy, Shaqra University, Riyadh, Saudi Arabia
- School of Pharmacy, The University of Queensland, Woolloongabba, 4102, Australia
| | - Seyed Ebrahim Alavi
- School of Pharmacy, The University of Queensland, Woolloongabba, 4102, Australia
| | - Mahasen Ali Radwan
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, Egyptian Russian University, Bader City, Egypt
| | - Mona Mohamed El Khatib
- Department of Pharmaceutics, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
- Department of Pharmaceutics, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Ibrahim Abdullah AlSarra
- Department of Pharmaceutical Science, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
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16
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17
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Biomaterials of PVA and PVP in medical and pharmaceutical applications: Perspectives and challenges. Biotechnol Adv 2018; 37:109-131. [PMID: 30472307 DOI: 10.1016/j.biotechadv.2018.11.008] [Citation(s) in RCA: 204] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 10/25/2018] [Accepted: 11/20/2018] [Indexed: 01/12/2023]
Abstract
Poly(vinyl alcohol) (PVA) has attracted considerable research interest and is recognized among the largest volume of synthetic polymers that have been produced worldwide for almost one century. This is due to its exceptional properties which dictated its extensive use in a wide variety of applications, especially in medical and pharmaceutical fields. However, studies revealed that PVA-based biomaterials present some limitations that can restrict their use or performances. To overcome these limitations, various methods have been reported, among which blending with poly(vinylpyrrolidone) (PVP) showed promising results. Thus, our aim was to offer a systematic overview on the current state concerning the preparation, properties and various applications of biomaterials based on synergistic effect of mixtures between PVA and PVP. Future trends towards where the biomaterials research is headed were discussed, showing the promising opportunities that PVA and PVP can offer.
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18
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Abozaid D, Ramadan A, Barakat H, Khalafallah N. Acyclovir lipid nanocapsules gel for oromucosal delivery: A preclinical evidence of efficacy in the chicken pouch membrane model. Eur J Pharm Sci 2018; 121:228-235. [PMID: 29778782 DOI: 10.1016/j.ejps.2018.05.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 05/02/2018] [Accepted: 05/17/2018] [Indexed: 02/07/2023]
Abstract
The study aimed to develop a patient-friendly acyclovir gel with improved efficacy in viral mouth infections, in response to patients' need for an intraoral acyclovir product. Acyclovir was loaded in lipid nanocapsules in gel form, and formulae were evaluated for oromucosal delivery. Lipid nanocapsules were prepared by the phase inversion method. Formulae were optimized to achieve maximum acyclovir entrapment and minimum acyclovir precipitation. Colloidal properties, and pharmaceutical performance indicators were assessed. Drug-loaded lipid nanocapsules were in the nanorange (39-120 nm), PdI (0.03-0.2), negative zeta potential, and entrapment efficiency (33-64%). Acyclovir (0.3% w/w) lipid nanocapsules gels were prepared using hydroxyethylcellulose (3% w/w). Resulting gel attributes were considered suitable. Lipid nanocapsules gels (0.3% w/w) showed enhanced Ex vivo acyclovir permeation across, and comparable retention in chicken pouch membrane compared to the 5% marketed cream despite lower drug content. The data provides basis for future exploration of lipid nanocapsules as carrier for transmucosal delivery of acyclovir; the enhanced acyclovir retention in chicken pouch membrane, compared to controls, suggests suitability of lipid nanocapsules for drug delivery to the viral lesion within the buccal membrane.
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Affiliation(s)
- Darine Abozaid
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Alyaa Ramadan
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
| | - Heba Barakat
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Nawal Khalafallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
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19
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Dalpiaz A, Pavan B. Nose-to-Brain Delivery of Antiviral Drugs: A Way to Overcome Their Active Efflux? Pharmaceutics 2018; 10:pharmaceutics10020039. [PMID: 29587409 PMCID: PMC6027266 DOI: 10.3390/pharmaceutics10020039] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 03/16/2018] [Accepted: 03/19/2018] [Indexed: 02/06/2023] Open
Abstract
Although several viruses can easily infect the central nervous system (CNS), antiviral drugs often show dramatic difficulties in penetrating the brain from the bloodstream since they are substrates of active efflux transporters (AETs). These transporters, located in the physiological barriers between blood and the CNS and in macrophage membranes, are able to recognize their substrates and actively efflux them into the bloodstream. The active transporters currently known to efflux antiviral drugs are P-glycoprotein (ABCB1 or P-gp or MDR1), multidrug resistance-associated proteins (ABCC1 or MRP1, ABCC4 or MRP4, ABCC5 or MRP5), and breast cancer resistance protein (ABCG2 or BCRP). Inhibitors of AETs may be considered, but their co-administration causes serious unwanted effects. Nasal administration of antiviral drugs is therefore proposed in order to overcome the aforementioned problems, but innovative devices, formulations (thermoreversible gels, polymeric micro- and nano-particles, solid lipid microparticles, nanoemulsions), absorption enhancers (chitosan, papaverine), and mucoadhesive agents (chitosan, polyvinilpyrrolidone) are required in order to selectively target the antiviral drugs and, possibly, the AET inhibitors in the CNS. Moreover, several prodrugs of antiretroviral agents can inhibit or elude the AET systems, appearing as interesting substrates for innovative nasal formulations able to target anti-Human Immunodeficiency Virus (HIV) agents into macrophages of the CNS, which are one of the most important HIV Sanctuaries of the body.
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Affiliation(s)
- Alessandro Dalpiaz
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Barbara Pavan
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
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20
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Picone P, Sabatino MA, Ditta LA, Amato A, San Biagio PL, Mulè F, Giacomazza D, Dispenza C, Di Carlo M. Nose-to-brain delivery of insulin enhanced by a nanogel carrier. J Control Release 2017; 270:23-36. [PMID: 29196041 DOI: 10.1016/j.jconrel.2017.11.040] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 11/21/2017] [Accepted: 11/25/2017] [Indexed: 02/07/2023]
Abstract
Recent evidences suggest that insulin delivery to the brain can be an important pharmacological therapy for some neurodegenerative pathologies, including Alzheimer disease (AD). Due to the presence of the Blood Brain Barrier, a suitable carrier and an appropriate route of administration are required to increase the efficacy and safety of the treatment. Here, poly(N-vinyl pyrrolidone)-based nanogels (NG), synthetized by e-beam irradiation, alone and with covalently attached insulin (NG-In) were characterized for biocompatibility and brain delivery features in a mouse model. Preliminarily, the biodistribution of the "empty" nanocarrier after intraperitoneal (i.p.) injection was investigated by using a fluorescent-labeled NG. By fluorescence spectroscopy, SEM and dynamic light scattering analyses we established that urine clearance occurs in 24h. Histological liver and kidneys inspections indicated that no morphological alterations of tissues occurred and no immunological response was activated after NG injection. Furthermore, after administration of the insulin-conjugated nanogels (NG-In) through the intranasal route (i.n.) no alteration or immunogenic response of the nasal mucosa was observed, suggesting that the formulation is well tolerated in mouse. Moreover, an enhancement of NG-In delivery to the different brain areas and of its biological activity, measured as Akt activation levels, with reference to free insulin administration was demonstrated. Taken together, these results indicate that the synthesized NG-In enhances brain insulin delivery upon i.n. administration and strongly encourage its further evaluation as therapeutic agent against some neurodegenerative diseases.
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Affiliation(s)
- Pasquale Picone
- Istituto di Biomedicina e Immunologia Molecolare (IBIM), Consiglio Nazionale Delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
| | - Maria Antonietta Sabatino
- Dipartimento dell'Innovazione Industriale e Digitale (DIID), Università di Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, Italy
| | - Lorena Anna Ditta
- Dipartimento dell'Innovazione Industriale e Digitale (DIID), Università di Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, Italy
| | - Antonella Amato
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Viale delle Scienze, Edificio 16, 90128 Palermo, Italy
| | - Pier Luigi San Biagio
- Istituto di Biofisica (IBF), Consiglio Nazionale Delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
| | - Flavia Mulè
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Viale delle Scienze, Edificio 16, 90128 Palermo, Italy
| | - Daniela Giacomazza
- Istituto di Biofisica (IBF), Consiglio Nazionale Delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy.
| | - Clelia Dispenza
- Dipartimento dell'Innovazione Industriale e Digitale (DIID), Università di Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, Italy; Istituto di Biofisica (IBF), Consiglio Nazionale Delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy.
| | - Marta Di Carlo
- Istituto di Biomedicina e Immunologia Molecolare (IBIM), Consiglio Nazionale Delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy.
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21
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Salatin S, Barar J, Barzegar-Jalali M, Adibkia K, Jelvehgari M. Thermosensitive in situ nanocomposite of rivastigmine hydrogen tartrate as an intranasal delivery system: Development, characterization, ex vivo permeation and cellular studies. Colloids Surf B Biointerfaces 2017; 159:629-638. [PMID: 28865359 DOI: 10.1016/j.colsurfb.2017.08.031] [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: 02/22/2017] [Revised: 08/07/2017] [Accepted: 08/17/2017] [Indexed: 12/22/2022]
Abstract
Intranasal administration of pharmaceutical compounds is gaining considerable attention as an alternative route for localized/systemic drug delivery. However, insufficient therapeutic efficacy of drugs via this route seems to be a major challenge for development of de novo intranasal formulations. This shortcoming can be overcome by simultaneous utilization of a nanoparticulate delivery system with a polymeric gel network. Therefore, the main aim of the present study was to develop erodible in-situ gel forming systems of poloxamer 407® (P407) as a promising platform, capable of prolonging rivastigmine hydrogen tartrate (RHT) release from the embedded poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs). PLGA NPs containing RHT were formulated and characterized, then were embedded in P407 gel forming matrix and analyzed in terms of viscosity, stability, gelation temperature, loading efficiency and mucoahesive behavior. The cytotoxicity of NPs was evaluated on A549 cell line using MTT assay. Cellular uptake of the NPs was also measured by means of fluorescence microcopy and flow cytometry analyses. The formulations were finally evaluated for their permeability across sheep nasal mucosa. A linear dependence of sol-gel temperature (Tsol-gel) on the P407 concentration was observed, and a P407 content of 18% was selected. The loading efficiencies of formulations were found to be around 100.22-104.31%. The RHT-loaded NPs showed a suitable cytocompatibility on A549 cells with a time-dependent increase in cellular uptake. Besides, nanocomposites showed higher amounts of drug permeation through nasal sheep mucosa than plain drug gel. Taken all, it is concluded that the formulated nanocomposites may be considered as useful drug delivery systems for the nasal delivery of RHT with enhanced therapeutic efficacy.
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Affiliation(s)
- S Salatin
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - J Barar
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - M Barzegar-Jalali
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kh Adibkia
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - M Jelvehgari
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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22
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Sridhar V, Wairkar S, Gaud R, Bajaj A, Meshram P. Brain targeted delivery of mucoadhesive thermosensitive nasal gel of selegiline hydrochloride for treatment of Parkinson's disease. J Drug Target 2017; 26:150-161. [PMID: 28682134 DOI: 10.1080/1061186x.2017.1350858] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Selegiline hydrochloride (SL), is an anti-Parkinson's agent, has low-oral bioavailability due to its high first pass metabolism and scarce oral absorption. In the present study, SL mucoadhesive nasal thermosensitive gel (SNT-gel) was prepared to enhance the bioavailability and subsequently, its concentration in the brain. The SNT-gel was prepared using Poloxamer 407-Chitosan combination and optimised formulation was further evaluated for physicochemical parameters. The comparative pharmacodynamic studies including behavioural studies, biochemical testing and histopathology of the brain was carried out in rats for SNT-gel, SL-nasal solution and SL Marketed Tablets. The optimised SNT-gel formulation (SNT-V) revealed sol-gel transition at 33-34°C. In-vitro diffusion study of SNT-V showed 102.37 ± 2.1% diffusion at 12 h which reduced to 89.64 ± 1.2% in Ex-vivo diffusion. Comparative results of behavioural studies indicated an improved score of photoactometer and reduced motor deficit (catalepsy score) in SNT-gel treatment group as compared with other groups. Similarly, a significant increase in brain dopamine, reduction in monoamine oxidase B level, increase in catalase activity and level of reduced glutathione upon treatment with SNT-gel indicated its effectiveness which was also supported by histopathology results. Therefore, nasal thermosensitive gel holds better potential for brain targeting in Parkinson's disease over the conventional nasal or oral formulations.
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Affiliation(s)
- Vinay Sridhar
- a Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management , SVKMs NMIMS , Mumbai , India
| | - Sarika Wairkar
- a Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management , SVKMs NMIMS , Mumbai , India
| | - Ram Gaud
- a Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management , SVKMs NMIMS , Mumbai , India
| | - Amrita Bajaj
- b SVKMs Dr. Bhanuben Nanavati College of Pharmacy , Mumbai , India
| | - Pramod Meshram
- c Department of Pathology , Bombay Veterinary College , Mumbai , India
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23
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Menzel C, Jelkmann M, Laffleur F, Bernkop-Schnürch A. Nasal drug delivery: Design of a novel mucoadhesive and in situ gelling polymer. Int J Pharm 2016; 517:196-202. [PMID: 27890621 DOI: 10.1016/j.ijpharm.2016.11.055] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/21/2016] [Accepted: 11/23/2016] [Indexed: 02/01/2023]
Abstract
The aim of the present study was to establish a novel polymeric excipient for liquid nasal dosage forms exhibiting viscosity increasing properties, improved mucoadhesion and stability towards oxidation in solution. In order to achieve this goal, 2-mercaptonicotinic acid was first coupled to l-cysteine by disulfide exchange reaction and after purification directly attached to the polymeric backbone of xanthan gum by carbodiimide mediated amide bond formation. The resulting conjugate was characterized with respect to the amount of coupled ligand, the in situ gelling behavior, mucoadhesive properties and stability towards oxidation. Furthermore, the influence of preactivated polymers on ciliary beat frequency (CBF) of porcine nasal epithelial cells was investigated. Results showed, that 252.52±20.54μmol of the ligand was attached per gram polymer. No free thiol groups could be detected on the polymeric backbone indicating entire preactivation. Rheological investigations of polymer mucus mixtures revealed a 1.7-fold and 2.5-fold enhanced mucoadhesion of entirely preactivated xanthan (Xan-Cys-MNA) compared to thiolated xanthan (Xan-Cys) and unmodified xanthan (Xan). Tensile force evaluation reported a 2.87 and 5.11-fold higher total work of adhesion (TWA) as well as a 1.63 and 2.41-fold higher maximum detachement force of Xan-Cys-MNA compared to Xan-Cys and Xan. In the presence of H2O2 as an oxidizing agent Xan-Cys-MNA showed unlike Xan-Cys no increase in viscosity, indicating high stability towards oxidation. Addition of CaCl2 to Xan-Cys-MNA solutions caused a decrease in viscosity at nevertheless higher total viscosity. Results from CBF studies proved nasal safety for the novel conjugate. According to these results, entirely preactivated thiolated xanthan gum seems to be a promising excipient for nasal dosage forms in order to improve drug bioavailability.
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Affiliation(s)
- Claudia Menzel
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Max Jelkmann
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Flavia Laffleur
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Center for Chemistry and Biomedicine, Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, 6020 Innsbruck, Austria.
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Rao M, Agrawal DK, Shirsath C. Thermoreversible mucoadhesive in situ nasal gel for treatment of Parkinson’s disease. Drug Dev Ind Pharm 2016; 43:142-150. [DOI: 10.1080/03639045.2016.1225754] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Monica Rao
- Department of Pharmaceutics, AISSMS College of Pharmacy, Kennedy Road, Pune, Maharashtra, India
| | - Deepak Kumar Agrawal
- Department of Pharmaceutics, AISSMS College of Pharmacy, Kennedy Road, Pune, Maharashtra, India
| | - Chaitanya Shirsath
- Department of Pharmaceutics, AISSMS College of Pharmacy, Kennedy Road, Pune, Maharashtra, India
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Shelke S, Shahi S, Jadhav K, Dhamecha D, Tiwari R, Patil H. Thermoreversible nanoethosomal gel for the intranasal delivery of Eletriptan hydrobromide. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:103. [PMID: 27091045 DOI: 10.1007/s10856-016-5713-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Accepted: 04/01/2016] [Indexed: 06/05/2023]
Abstract
The objective of the current study was to formulate and characterize thermoreversible gel of Eletriptan Hydrobromide for brain targeting via the intranasal route. Ethosomes were prepared by 3(2) factorial design with two independent variables (concentration of soya lecithin and ethanol) and two response variables [percent entrapment efficiency and vesicle size (nm)] using ethanol injection method. Formulated ethosomes were evaluated for preliminary microscopic examination followed by percent drug entrapment efficiency, vesicle size analysis, zeta potential, polydispersibility index and Transmission electron microscopy (TEM). TEM confirms spherical morphology of ethosomes, whereas Malvern zeta sizer confirms that the vesicle size was in the range of 191 ± 6.55-381.3 ± 61.0 nm. Ethosomes were incorporated in gel using poloxamer 407 and carbopol 934 as thermoreversible and mucoadhesive polymers, respectively. Ethosomal gels were evaluated for their pH, viscosity, mucoadhesive strength, in vitro drug release and ex vivo drug permeation through the sheep nasal mucosa. Mucoadhesive strength and pH was found to be 4400 ± 45 to 5500 ± 78.10 dynes/cm(2) and 6.0 ± 0.3 to 6.2 ± 0.1, respectively. In-vitro drug release from the optimized ethosomal gel formulation (G4) was found to be almost 100 % and ex vivo permeation of 4980 µg/ml with a permeability coefficient of 11.94 ± 0.04 × 10(-5) cm/s after 24 h. Histopathological study of the nasal mucosa confirmed non-toxic nature of ethosomal gels. Formulated EH loaded ethosomal thermoreversible gel could serve as the better alternative for the brain targeting via the intranasal route which in turn could subsequently improve its bioavailability.
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Affiliation(s)
- Santosh Shelke
- Department of Pharmaceutics, Yash Institute of Pharmacy, Bajaj Nagar, Aurangabad, Maharashtra, 431134, India.
| | - Sadhana Shahi
- Department of Pharmaceutics, Government College of Pharmacy, Osmanpura, Aurangabad, Maharashtra, 431005, India
| | - Kiran Jadhav
- KLE University's College of Pharmacy, Nehru Nagar, Belgaum, Karnataka, 590010, India
| | - Dinesh Dhamecha
- KLE University's College of Pharmacy, Nehru Nagar, Belgaum, Karnataka, 590010, India
| | - Roshan Tiwari
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677, USA
| | - Hemlata Patil
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS, 38677, USA
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Snejdrova E, Drastik M, Dittrich M, Kastner P, Nguyenova J. Mucoadhesive plasticized system of branched poly(lactic-co-glycolic acid) with aciclovir. Drug Dev Ind Pharm 2016; 42:1653-9. [DOI: 10.3109/03639045.2016.1160109] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Lungare S, Bowen J, Badhan R. Development and Evaluation of a Novel Intranasal Spray for the Delivery of Amantadine. J Pharm Sci 2016; 105:1209-20. [PMID: 26886345 DOI: 10.1016/j.xphs.2015.12.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 12/13/2015] [Accepted: 12/15/2015] [Indexed: 12/19/2022]
Abstract
The aim of this study was to develop and characterize an intranasal delivery system for amantadine hydrochloride (AMT). Optimal formulations consisted of a thermosensitive polymer Pluronic® 127 and either carboxymethyl cellulose or chitosan which demonstrated gel transition at nasal cavity temperatures (34 ± 1°C). Rheologically, the loss tangent (Tan δ) confirmed a 3-stage gelation phenomena at 34 ± 1°C and non-Newtonian behavior. Storage of optimized formulation carboxymethyl cellulose and optimal formulation chitosan at 4°C for 8 weeks resulted in repeatable release profiles at 34°C when sampled, with a Fickian mechanism earlier on but moving toward anomalous transport by week 8. Polymers (Pluronic® 127, carboxymethyl cellulose, and chitosan) demonstrated no significant cellular toxicity to human nasal epithelial cells up to 4 mg/mL and up to 1 mM for AMT (IC50: 4.5 ± 0.05 mM). Optimized formulation carboxymethyl cellulose and optimal formulation chitosan demonstrated slower release across an in vitro human nasal airway model (43%-44% vs 79 ± 4.58% for AMT). Using a human nasal cast model, deposition into the olfactory regions (potential nose-to-brain) was demonstrated on nozzle insertion (5 mm), whereas tilting of the head forward (15°) resulted in greater deposition in the bulk of the nasal cavity.
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Affiliation(s)
- Shital Lungare
- School of Life and Health Sciences, Department of Pharmacy, Aston University, Birmingham, UK
| | - James Bowen
- Department of Engineering and Innovation, The Open University, Milton Keynes, UK; School of Chemical Engineering, University of Birmingham, Birmingham, UK
| | - Raj Badhan
- Aston Research Centre for Healthy Ageing, Life and Health Sciences, Aston University, Birmingham, UK.
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Kumar A, Pandey AN, Jain SK. Nasal-nanotechnology: revolution for efficient therapeutics delivery. Drug Deliv 2014; 23:681-93. [PMID: 24901207 DOI: 10.3109/10717544.2014.920431] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT In recent years, nanotechnology-based delivery systems have gained interest to overcome the problems of restricted absorption of therapeutic agents from the nasal cavity, depending upon the physicochemical properties of the drug and physiological properties of the human nose. OBJECTIVE The well-tolerated and non-invasive nasal drug delivery when combined with the nanotechnology-based novel formulations and carriers, opens the way for the effective systemic and brain targeting delivery of various therapeutic agents. To accomplish competent drug delivery, it is imperative to recognize the interactions among the nanomaterials and the nasal biological environment, targeting cell-surface receptors, drug release, multiple drug administration, stability of therapeutic agents and molecular mechanisms of cell signaling involved in patho-biology of the disease under consideration. METHODS Quite a few systems have been successfully formulated using nanomaterials for intranasal (IN) delivery. Carbon nanotubes (CNTs), chitosan, polylactic-co-glycolic acid (PLGA) and PLGA-based nanosystems have also been studied in vitro and in vivo for the delivery of several therapeutic agents which shown promising concentrations in the brain after nasal administration. RESULTS AND CONCLUSION The use of nanomaterials including peptide-based nanotubes and nanogels (NGs) for vaccine delivery via nasal route is a new approach to control the disease progression. In this review, the recent developments in nanotechnology utilized for nasal drug delivery have been discussed.
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Affiliation(s)
- Amrish Kumar
- a Department of Pharmaceutics , Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya (A Central University) , Bilaspur , Chhattisgarh , India
| | - Aditya Nath Pandey
- a Department of Pharmaceutics , Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya (A Central University) , Bilaspur , Chhattisgarh , India
| | - Sunil Kumar Jain
- a Department of Pharmaceutics , Institute of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya (A Central University) , Bilaspur , Chhattisgarh , India
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Shah BM, Misra M, Shishoo CJ, Padh H. Nose to brain microemulsion-based drug delivery system of rivastigmine: formulation and ex-vivo characterization. Drug Deliv 2014; 22:918-30. [PMID: 24467601 PMCID: PMC11133781 DOI: 10.3109/10717544.2013.878857] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 12/19/2013] [Accepted: 12/21/2013] [Indexed: 01/27/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder leading to irreversible loss of neurons, cognition and formation of abnormal protein aggregates. Rivastigmine, a reversible cholinesterase inhibitor used for the treatment of AD, undergoes extensive first-pass metabolism, thus limiting its absolute bioavailability to only 36% after 3-mg dose. Due to extreme aqueous solubility, rivastigmine shows poor penetration and lesser concentration in the brain thus requiring frequent oral dosing. This investigation was aimed to formulate microemulsion (ME) and mucoadhesive microemulsions (MMEs) of rivastigmine for nose to brain delivery and to compare percentage drug diffused for both systems using in-vitro and ex-vivo study. Rivastigmine-loaded ME and MMEs were prepared by titration method and characterized for drug content, globule size distribution, zeta potential, pH, viscosity and nasal ciliotoxicity study. Rivastigmine-loaded ME system containing 8% w/w Capmul MCM EP, 44% w/w Labrasol:Transcutol-P (1:1) and 48% w/w distilled water was formulated, whereas 0.3% w/w chitosan (CH) and cetyl trimethyl ammonium bromide (as mucoadhesive agents) were used to formulate MMEs, respectively. ME and MMEs formulations were transparent with drug content, globule size and zeta potential in the range of 98.59% to 99.43%, 53.8 nm to 55.4 nm and -2.73 mV to 6.52 mV, respectively. MME containing 0.3% w/w CH followed Higuchi model (r(2) = 0.9773) and showed highest diffusion coefficient. It was free from nasal ciliotoxicity and stable for three months. However, the potential of developed CH-based MME for nose to brain delivery of rivastigmine can only be established after in-vivo and biodistribution study.
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Affiliation(s)
- Brijesh M. Shah
- Department of Pharmaceutics, B. V. Patel PERD Centre, Ahmedabad, Gujarat, India
| | - Manju Misra
- Department of Pharmaceutics, NIPER-Ahmedabad, C/O B. V. Patel PERD Centre, Ahmedabad, Gujarat, India, and
| | | | - Harish Padh
- Vice Chancellor, Sardar Patel University, Vallabh Vidyanagar, Gujarat, India
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Gelatin nanostructured lipid carriers-mediated intranasal delivery of basic fibroblast growth factor enhances functional recovery in hemiparkinsonian rats. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2013; 10:755-64. [PMID: 24200526 DOI: 10.1016/j.nano.2013.10.009] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 10/03/2013] [Accepted: 10/23/2013] [Indexed: 11/23/2022]
Abstract
UNLABELLED Lipid nanoparticles with solid matrix have been given increasing attention due to their biodegradable status and ability to entrap a variety of biologically active compounds. In this study, new phospholipid-based gelatin nanoparticles encapsulating basic fibroblast growth factor (bFGF) were developed to target the brain via nasal administration. Treatment effects were assessed by quantifying rotational behavior, monoamine neurotransmitter levels and tyrosine hydroxylase expression in 6-hydroxydopamine induced hemiparkinsonian rats. The gelatin nanostructured lipid carriers (GNLs) were prepared by a water-in-water emulsion method and then freeze-dried. The GNLs possessed better profile than gelatin nanoparticles (GNs), with particle size 143±1.14nm and Zeta potential -38.2±1.2mV. The intranasal GNLs efficiently enriched exogenous bFGF in olfactory bulb and striatum without adverse impact on the integrity of nasal mucosa and showed obvious therapeutic effects on hemiparkinsonian rats. Thus, GNLs are attractive carriers for nose-to-brain drug delivery, especially for unstable macromolecular drugs such as bFGF. FROM THE CLINICAL EDITOR This team of authors reports the development of phospholipid-based gelatin nanoparticles encapsulating basic fibroblast growth factor to target the brain via intranasal administration. A rat model of hemiparkinsonism was applied demonstrating a good safety profile and an obvious therapeutic effect.
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Abdel Mouez M, Zaki NM, Mansour S, Geneidi AS. Bioavailability enhancement of verapamil HCl via intranasal chitosan microspheres. Eur J Pharm Sci 2013; 51:59-66. [PMID: 23999035 DOI: 10.1016/j.ejps.2013.08.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 08/19/2013] [Accepted: 08/20/2013] [Indexed: 12/28/2022]
Abstract
Chitosan microspheres are potential drug carriers for maximizing nasal residence time, circumventing rapid mucociliary clearance and enhancing nasal absorption. The aim of the present study was to develop and characterize chitosan mucoadhesive microspheres of verapamil hydrochloride (VRP) for intranasal delivery as an alternative to oral VRP which suffers low bioavailability (20%) due to extensive first pass effect. The microspheres were produced using a spray-drying and precipitation techniques and characterized for morphology (scanning electron microscopy), particle size (laser diffraction method), drug entrapment efficiency, thermal behavior (differential scanning calorimetry) and crystallinity (X-ray diffractometric studies) as well as in vitro drug release. Bioavailability of nasal VRP microspheres was studied in rabbits and the results were compared to those obtained after nasal, oral and intravenous administration of VRP solution. Results demonstrated that the microspheres were spherical with size 21-53 μm suitable for nasal deposition. The spray-drying technique was superior over precipitation technique in providing higher VRP entrapment efficiency and smaller burst release followed by a more sustained one over 6h. The bioavailability study demonstrated that the nasal microspheres exhibited a significantly higher bioavailability (58.6%) than nasal solution of VRP (47.8%) and oral VRP solution (13%). In conclusion, the chitosan-based nasal VRP microspheres are promising for enhancing VRP bioavailability by increasing the nasal residence time and avoiding the first-pass metabolism of the drug substance.
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Affiliation(s)
- Mamdouh Abdel Mouez
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, Egypt; Department of Pharmaceutics, College of Pharmacy, Future University, El-Tagamoa El-Khames, Cairo, Egypt
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Abstract
Chronic rhinosinusitis is a multifactorial disorder that may be heterogeneous in presentation and clinical course. While the introduction of endoscopic sinus surgery revolutionized surgical management and has led to significantly improved patient outcomes, medical therapy remains the foundation of long-term care of chronic rhinosinusitis, particularly in surgically recalcitrant cases. A variety of devices and pharmaceutical agents have been developed to apply topical medical therapy to the sinuses, taking advantage of the access provided by endoscopic surgery. The goal of topical therapy is to address the inflammation, infection, and mucociliary dysfunction that underlies the disease. Major factors that impact success include the patient's sinus anatomy and the dynamics of the delivery device. Despite a growing number of topical treatment options, the evidence-based literature to support their use is limited. In this article, we comprehensively review current delivery methods and the available topical agents. We also discuss biotechnological advances that promise enhanced delivery in the future, and evolving pharmacotherapeutical compounds that may be added to rhinologist's armamentarium. A complete understand of topical drug delivery is increasingly essential to the management of chronic rhinosinusitis when traditional forms of medical therapy and surgery have failed.
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Abstract
The National Key Laboratory of Biochemical Engineering established in 1995 is affiliated with the Institute of Process Engineering, Chinese Academy of Sciences (CAS), and located in Zhong-guan-cun (Beijing, China). The National Key Laboratory of Biochemical Engineering is working towards developments in the fields of bio-reaction, bioseparation and bio-formulation, by chemical and material methods. Over the last 5 years, approximately 200 scientists and students have worked at the laboratory, and published over 400 articles. Numerous universities, companies and institutes have established cooperative relationships with this laboratory, and over 70 cooperative research programs with other researchers have been conducted in the past few years.
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Modified chitosan hydrogels as drug delivery and tissue engineering systems: present status and applications. Acta Pharm Sin B 2012. [DOI: 10.1016/j.apsb.2012.07.004] [Citation(s) in RCA: 217] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Alsarra IA, Hamed AY, Alanazi FK, Neau SH. Rheological and mucoadhesive characterization of poly(vinylpyrrolidone) hydrogels designed for nasal mucosal drug delivery. Arch Pharm Res 2011; 34:573-82. [PMID: 21544722 DOI: 10.1007/s12272-011-0407-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Revised: 07/23/2010] [Accepted: 09/11/2010] [Indexed: 11/30/2022]
Abstract
Poly(vinylpyrrolidone) (PVP) hydrogels were crosslinked by gamma irradiation to add structure and rigidity, and then rheological and mucoadhesive properties were evaluated. The effects of PVP concentration, radiation dose, and additives, such as poly(ethylene glycol) (PEG) and glycerol, on rheological properties were investigated. In an oscillatory analysis, an increase in polymer concentrations increased the storage modulus (G') and the loss modulus (G″) but decreased the loss tangent (tan δ < 1). The relationships between G'or G″ and the frequency levelled off at higher frequencies, which is indicative of polymer chain entanglement and network formation. Each of the 6% PVP hydrogels exhibited plastic flow with rheopectic behavior. PVP concentration, radiation dose, and the presence of PEG or glycerol influenced the rheological and mucoadhesive properties of the hydrogels. However, adding acyclovir to the formulation did not have a profound effect on the rheological behavior of the hydrogels. The results suggest that a 3% PVP hydrogel with 1% PEG crosslinked with 20 kGy is the most appropriate hydrogel. The results demonstrated the successful complementary application of oscillatory and flow rheometry to characterize and develop a hydrogel for mucosal drug administration.
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Affiliation(s)
- Ibrahim A Alsarra
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia.
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Liu H, Pan W, Ke P, Dong Y, Ji L. Preparation and evaluation of a novel gastric mucoadhesive sustained-release acyclovir microsphere. Drug Dev Ind Pharm 2010; 36:1098-105. [DOI: 10.3109/03639041003677780] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Hongfei Liu
- Department of Materials, Imperial College London, London, UK
| | - Weisan Pan
- Department of Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Peng Ke
- Department of Pharmaceutics, School of Pharmacy, University of London, London, UK
| | - Yixiang Dong
- Department of Materials, Imperial College London, London, UK
| | - Lijun Ji
- Department of Materials, Imperial College London, London, UK
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Wang K, Jia Q, Han F, Liu H, Li S. Self-assembledl-alanine derivative organogel as in situ drug delivery implant: characterization, biodegradability, and biocompatibility. Drug Dev Ind Pharm 2010; 36:1511-21. [DOI: 10.3109/03639045.2010.488694] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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38
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Luppi B, Bigucci F, Cerchiara T, Zecchi V. Chitosan-based hydrogels for nasal drug delivery: from inserts to nanoparticles. Expert Opin Drug Deliv 2010; 7:811-28. [DOI: 10.1517/17425247.2010.495981] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Davidovich-Pinhas M, Bianco-Peled H. Mucoadhesion: a review of characterization techniques. Expert Opin Drug Deliv 2010; 7:259-71. [DOI: 10.1517/17425240903473134] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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