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Al Bakri W, Donovan MD. The role of membrane transporters in the absorption of atrazine following nasal exposure. Inhal Toxicol 2024; 36:250-260. [PMID: 38738559 DOI: 10.1080/08958378.2024.2348165] [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: 02/05/2024] [Accepted: 04/18/2024] [Indexed: 05/14/2024]
Abstract
OBJECTIVE The purpose of these studies was to investigate the uptake of atrazine across the nasal mucosa to determine whether direct transport to the brain through the olfactory epithelium is likely to occur. These studies were undertaken to provide important new information about the potential for the enhanced neurotoxicity of herbicides following nasal inhalation. MATERIALS AND METHODS Transport of atrazine from aqueous solution and from commercial atrazine-containing herbicide products was assessed using excised nasal mucosal tissues. The permeation rate and the role of membrane transporters in the uptake of atrazine across the nasal mucosa were also investigated. Histological examination of the nasal tissues was conducted to assess the effects of commercial atrazine-containing products on nasal tissue morphology. RESULTS Atrazine showed high flux across both nasal respiratory and olfactory tissues, and efflux transporters were found to play an essential role in limiting its uptake at low exposure concentrations. Commercial atrazine-containing herbicide products showed remarkably high transfer across the nasal tissues, and histological evaluation showed significant changes in the morphology of the nasal epithelium following exposure to the herbicide products. DISCUSSION Lipophilic herbicides such as atrazine can freely permeate across the nasal mucosa despite the activity of efflux transporters. The adjuvant compounds in commercial herbicide products disrupt the nasal mucosa's epithelial barrier, resulting in even greater atrazine permeation across the tissues. The properties of the herbicide itself and those of the formulated products play crucial roles in the potential for the enhanced neurotoxicity of herbicides following nasal inhalation.
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Affiliation(s)
- Wisam Al Bakri
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, The University of Iowa, Iowa City, IA, 52242USA
| | - Maureen D Donovan
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, The University of Iowa, Iowa City, IA, 52242USA
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2
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Tekade AR, Suryavanshi MR, Shewale AB, Patil VS. Design and development of donepezil hydrochloride loaded nanostructured lipid carriers for efficient management of Alzheimer's disease. Drug Dev Ind Pharm 2023; 49:590-600. [PMID: 37733474 DOI: 10.1080/03639045.2023.2262035] [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: 06/02/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
OBJECTIVE The primary objective of this study was to develop nanostructured lipid carriers of donepezil hydrochloride (DNZ HCl) for effective management of Alzheimer's disease (AD). SIGNIFICANCE Intranasal administration of DNZ NLC containing Nigella sativa (NS) oil as a liquid lipid may significantly improve nasal penetration and deliver the drug directly to the brain avoiding blood brain barrier (BBB). METHOD High pressure homogenization was used to prepare nanostructured lipid carriers (NLCs), followed by ultrasonication. Glyceryl monostearate (GMS), Tween 80, and Poloxamer 407 were used as solid lipid, surfactant and co-surfactant respectively, whereas, Nigella sativa oil was used as a liquid lipid. RESULT The particle size, polydispersity index and zeta potential were found to be 107.4 ± 2.64 nm, 0.25 ± 0.04 and -41.7 mV. The entrapment efficiency and drug content were found to be 70.20% and 89.05% respectively. After intranasal administration of Donepezil hydrochloride (DNZ HCl) loaded NLC's, the maximum concentrations (Cmax) of 4.597 µg/mL in brain and 2.2583 µg/mL in blood was achieved after 1 h (Tmax). CONCLUSION The formulated DNZ HCl loaded NLCs significantly improved nasal penetration and enhanced drug distribution in brain resulting in a potentially effective intranasal drug delivery system for the effective management of Alzheimer's disease.
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Affiliation(s)
- Avinash R Tekade
- Department of Pharmaceutics, Marathwada Mitra Mandal's College of Pharmacy, Pune, India
| | - Mayuri R Suryavanshi
- Department of Pharmaceutics, Marathwada Mitra Mandal's College of Pharmacy, Pune, India
| | - Ashutosh B Shewale
- Department of Pharmaceutics, Marathwada Mitra Mandal's College of Pharmacy, Pune, India
| | - Vilas S Patil
- Department of Pharmacology, Marathwada Mitra Mandal's College of Pharmacy, Pune, India
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3
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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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4
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Crowe TP, Hsu WH. Evaluation of Recent Intranasal Drug Delivery Systems to the Central Nervous System. Pharmaceutics 2022; 14:629. [PMID: 35336004 PMCID: PMC8950509 DOI: 10.3390/pharmaceutics14030629] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/06/2022] [Accepted: 03/09/2022] [Indexed: 01/27/2023] Open
Abstract
Neurological diseases continue to increase in prevalence worldwide. Combined with the lack of modifiable risk factors or strongly efficacious therapies, these disorders pose a significant and growing burden on healthcare systems and societies. The development of neuroprotective or curative therapies is limited by a variety of factors, but none more than the highly selective blood-brain barrier. Intranasal administration can bypass this barrier completely and allow direct access to brain tissues, enabling a large number of potential new therapies ranging from bioactive peptides to stem cells. Current research indicates that merely administering simple solutions is inefficient and may limit therapeutic success. While many therapies can be delivered to some degree without carrier molecules or significant modification, a growing body of research has indicated several methods of improving the safety and efficacy of this administration route, such as nasal permeability enhancers, gelling agents, or nanocarrier formulations. This review shall discuss promising delivery systems and their role in expanding the clinical efficacy of this novel administration route. Optimization of intranasal administration will be crucial as novel therapies continue to be studied in clinical trials and approved to meet the growing demand for the treatment of patients with neurological diseases.
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Affiliation(s)
- Tyler P. Crowe
- Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA;
| | - Walter H. Hsu
- Department of Biomedical Sciences, Iowa State University, Ames, IA 50011, USA
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5
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Using the Intranasal Route to Administer Drugs to Treat Neurological and Psychiatric Illnesses: Rationale, Successes, and Future Needs. CNS Drugs 2022; 36:739-770. [PMID: 35759210 PMCID: PMC9243954 DOI: 10.1007/s40263-022-00930-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/19/2022] [Indexed: 11/17/2022]
Abstract
While the intranasal administration of drugs to the brain has been gaining both research attention and regulatory success over the past several years, key fundamental and translational challenges remain to fully leveraging the promise of this drug delivery pathway for improving the treatment of various neurological and psychiatric illnesses. In response, this review highlights the current state of understanding of the nose-to-brain drug delivery pathway and how both biological and clinical barriers to drug transport using the pathway can been addressed, as illustrated by demonstrations of how currently approved intranasal sprays leverage these pathways to enable the design of successful therapies. Moving forward, aiming to better exploit the understanding of this fundamental pathway, we also outline the development of nanoparticle systems that show improvement in delivering approved drugs to the brain and how engineered nanoparticle formulations could aid in breakthroughs in terms of delivering emerging drugs and therapeutics while avoiding systemic adverse effects.
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6
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Herman S, Fishel I, Offen D. Intranasal delivery of mesenchymal stem cells-derived extracellular vesicles for the treatment of neurological diseases. Stem Cells 2021; 39:1589-1600. [PMID: 34520591 DOI: 10.1002/stem.3456] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 09/02/2021] [Indexed: 12/22/2022]
Abstract
Neurological disorders are diseases of the central nervous system (CNS), characterized by a progressive degeneration of cells and deficiencies in neural functions. Mesenchymal stem cells (MSCs) are a promising therapy for diseases and disorders of the CNS. Increasing evidence suggests that their beneficial abilities can be attributed to their paracrine secretion of extracellular vesicles (EVs). Administration of EVs that contain a mixture of proteins, lipids, and nucleic acids, resembling the secretome of MSCs, has been shown to mimic most of the effects of the parental cells. Moreover, the small size and safety profile of EVs provide a number of advantages over cell transplantation. Intranasal (IN) administration of EVs has been established as an effective and reliable way to bypass the blood-brain barrier (BBB) and deliver drugs to the CNS. In addition to pharmacological drugs, EVs can be loaded with a diverse range of cargo designed to modulate gene expression and protein functions in recipient cells, and lead to immunomodulation, neurogenesis, neuroprotection, and degradation of protein aggregates. In this review, we will explore the proposed physiological pathways by which EVs migrate through the nasal route to the CNS where they can actively target a region of injury or inflammation and exert their therapeutic effects. We will summarize the functional outcomes observed in animal models of neurological diseases following IN treatment with MSC-derived EVs. We will also examine key mechanisms that have been suggested to mediate the beneficial effects of EV-based therapy.
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Affiliation(s)
- Shay Herman
- Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv, Israel
| | - Idan Fishel
- Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv, Israel
| | - Daniel Offen
- Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv, Israel
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7
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Emad NA, Ahmed B, Alhalmi A, Alzobaidi N, Al-Kubati SS. Recent progress in nanocarriers for direct nose to brain drug delivery. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102642] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Shah B. Microemulsion as a promising carrier for nose to brain delivery: journey since last decade. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2021. [DOI: 10.1007/s40005-021-00528-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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9
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Charalambous M, Volk HA, Van Ham L, Bhatti SFM. First-line management of canine status epilepticus at home and in hospital-opportunities and limitations of the various administration routes of benzodiazepines. BMC Vet Res 2021; 17:103. [PMID: 33663513 PMCID: PMC7934266 DOI: 10.1186/s12917-021-02805-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 02/16/2021] [Indexed: 12/22/2022] Open
Affiliation(s)
- Marios Charalambous
- Small Animal Department, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium.
| | - Holger A Volk
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Hannover, 30559, Hannover, Germany
| | - Luc Van Ham
- Small Animal Department, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
| | - Sofie F M Bhatti
- Small Animal Department, Faculty of Veterinary Medicine, Ghent University, 9820, Merelbeke, Belgium
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Keller LA, Merkel O, Popp A. Intranasal drug delivery: opportunities and toxicologic challenges during drug development. Drug Deliv Transl Res 2021; 12:735-757. [PMID: 33491126 PMCID: PMC7829061 DOI: 10.1007/s13346-020-00891-5] [Citation(s) in RCA: 177] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2020] [Indexed: 02/06/2023]
Abstract
Over the past 10 years, the interest in intranasal drug delivery in pharmaceutical R&D has increased. This review article summarises information on intranasal administration for local and systemic delivery, as well as for CNS indications. Nasal delivery offers many advantages over standard systemic delivery systems, such as its non-invasive character, a fast onset of action and in many cases reduced side effects due to a more targeted delivery. There are still formulation limitations and toxicological aspects to be optimised. Intranasal drug delivery in the field of drug development is an interesting delivery route for the treatment of neurological disorders. Systemic approaches often fail to efficiently supply the CNS with drugs. This review paper describes the anatomical, histological and physiological basis and summarises currently approved drugs for administration via intranasal delivery. Further, the review focuses on toxicological considerations of intranasally applied compounds and discusses formulation aspects that need to be considered for drug development.
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Affiliation(s)
- Lea-Adriana Keller
- Preclinical Safety, AbbVie Deutschland GmbH & Co. KG, Knollstrasse, 67061 Ludwigshafen, Germany
- Department of Pharmacy, Pharmaceutical Technology and Biopharmacy, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81337 Munich, Germany
| | - Olivia Merkel
- Department of Pharmacy, Pharmaceutical Technology and Biopharmacy, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81337 Munich, Germany
| | - Andreas Popp
- Preclinical Safety, AbbVie Deutschland GmbH & Co. KG, Knollstrasse, 67061 Ludwigshafen, Germany
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11
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Pandey M, Choudhury H, Verma RK, Chawla V, Bhattamisra SK, Gorain B, Raja MAG, Amjad MW. Nanoparticles Based Intranasal Delivery of Drug to Treat Alzheimer's Disease: A Recent Update. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2020; 19:648-662. [PMID: 32819251 DOI: 10.2174/1871527319999200819095620] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 05/23/2020] [Accepted: 07/10/2020] [Indexed: 11/22/2022]
Abstract
Alzheimer Association Report (2019) stated that the 6th primary cause of death in the USA is Alzheimer's Disease (AD), which leads to behaviour and cognitive impairment. Nearly 5.8 million peoples of all ages in the USA have suffered from this disease, including 5.6 million elderly populations. The statistics of the progression of this disease is similar to the global scenario. Still, the treatment of AD is limited to a few conventional oral drugs, which often fail to deliver an adequate amount of the drug in the brain. The reduction in the therapeutic efficacy of an anti-AD drug is due to poor solubility, existence to the blood-brain barrier and low permeability. In this context, nasal drug delivery emerges as a promising route for the delivery of large and small molecular drugs for the treatment of AD. This promising pathway delivers the drug directly into the brain via an olfactory route, which leads to the low systemic side effect, enhanced bioavailability, and higher therapeutic efficacy. However, few setbacks, such as mucociliary clearance and poor drug mucosal permeation, limit its translation from the laboratory to the clinic. The above stated limitation could be overcome by the adaption of nanoparticle as a drug delivery carrier, which may lead to prolong delivery of drugs with better permeability and high efficacy. This review highlights the latest work on the development of promising Nanoparticles (NPs) via the intranasal route for the treatment of AD. Additionally, the current update in this article will draw the attention of the researcher working on these fields and facing challenges in practical applicability.
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Affiliation(s)
- Manisha Pandey
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University-Bukit Jalil 57000, Kuala Lumpur, Malaysia
| | - Hira Choudhury
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University-Bukit Jalil 57000, Kuala Lumpur, Malaysia
| | - Rohit Kumar Verma
- Department of Pharmacy Practice, School of Pharmacy, International Medical University- Bukit Jalil 57000, Kuala Lumpur, Malaysia
| | - Viney Chawla
- University Institute of Pharmaceutical Sciences and Research, Baba Farid University of Health Sciences, Faridkot, India
| | - Subrat Kumar Bhattamisra
- Department of Life sciences, School of Pharmacy, International Medical University-Bukit Jalil 57000, Kuala Lumpur, Malaysia
| | - Bapi Gorain
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Selangor 47500, Malaysia
| | | | - Muhammad Wahab Amjad
- Department of Pharmaceutics, Faculty of Pharmacy, Northern Border University, Saudi Arabia
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Rabiee N, Ahmadi S, Afshari R, Khalaji S, Rabiee M, Bagherzadeh M, Fatahi Y, Dinarvand R, Tahriri M, Tayebi L, Hamblin MR, Webster TJ. Polymeric Nanoparticles for Nasal Drug Delivery to the Brain: Relevance to Alzheimer's Disease. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.202000076] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Navid Rabiee
- Department of Chemistry Sharif University of Technology Tehran 11155‐3516 Iran
| | - Sepideh Ahmadi
- Student Research Committee Department of Medical Biotechnology School of Advanced Technologies in Medicine Shahid Beheshti University of Medical Sciences Tehran 19857‐17443 Iran
- Cellular and Molecular Biology Research Center Shahid Beheshti University of Medical Sciences Tehran 19857‐17443 Iran
| | - Ronak Afshari
- Department of Physics Sharif University of Technology P.O. Box 11155‐9161 Tehran Iran
| | - Samira Khalaji
- Biomaterial Group Department of Biomedical Engineering Amirkabir University of Technology Tehran 15875‐4413 Iran
| | - Mohammad Rabiee
- Biomaterial Group Department of Biomedical Engineering Amirkabir University of Technology Tehran 15875‐4413 Iran
| | - Mojtaba Bagherzadeh
- Department of Chemistry Sharif University of Technology Tehran 11155‐3516 Iran
| | - Yousef Fatahi
- Department of Pharmaceutical Nanotechnology Faculty of Pharmacy Tehran University of Medical Sciences Tehran 14155‐6451 Iran
- Nanotechnology Research Center Faculty of Pharmacy Tehran University of Medical Sciences Tehran 14155‐6451 Iran
- Universal Scientific Education and Research Network (USERN) Tehran 15875‐4413 Iran
| | - Rassoul Dinarvand
- Department of Pharmaceutical Nanotechnology Faculty of Pharmacy Tehran University of Medical Sciences Tehran 14155‐6451 Iran
- Nanotechnology Research Center Faculty of Pharmacy Tehran University of Medical Sciences Tehran 14155‐6451 Iran
| | - Mohammadreza Tahriri
- Department of Developmental Sciences Marquette University Milwaukee WI 53233 USA
| | - Lobat Tayebi
- Department of Developmental Sciences Marquette University Milwaukee WI 53233 USA
| | - Michael R. Hamblin
- Wellman Center for Photomedicine Massachusetts General Hospital Boston USA
- Department of Dermatology Harvard Medical School Boston USA
- Laser Research Centre Faculty of Health Science University of Johannesburg Doornfontein 2028 South Africa
| | - Thomas J. Webster
- Department of Chemical Engineering Northeastern University Boston MA 02115 USA
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Kashyap K, Shukla R. Drug Delivery and Targeting to the Brain Through Nasal Route: Mechanisms, Applications and Challenges. Curr Drug Deliv 2020; 16:887-901. [PMID: 31660815 DOI: 10.2174/1567201816666191029122740] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/05/2019] [Accepted: 10/15/2019] [Indexed: 02/06/2023]
Abstract
Blood-brain barrier (BBB) provides restrictions for the transportation of various therapeutic agents to the brain. Efforts to directly target the brain by olfactory as well as trigeminal nerve pathway, bypassing BBB, have grown significantly in recent times. The intranasal route of transportation of the drug encompasses ability for the delivery of drug directly to the brain, improves site-specificity in the brain and avoids systemic side effects. In the current era, novel drug delivery systems are useful tools for targeting the brain without providing any harmful effects in nasal mucosa as well as the central nervous system. The complex structure of nasal cavity, mucociliary clearance, degradation by the enzymes present in nasal cavity and pathological conditions like rhinitis, common cold, etc. are the major disputes for nasal drug delivery. The use of nanotechnological approaches like solid lipid nanoparticles, polymeric nanoparticles, nanoemulsions, liposomes and polymeric micelles provides the ability to overcome these barriers. There are several emerging nasal drug delivery technologies produced by various pharmaceutical companies to conquer these hurdles. This review tries to address the recent developments in the area of direct drug delivery to the brain through the nasal route.
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Affiliation(s)
- Kanchan Kashyap
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Raebareli, India
| | - Rahul Shukla
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Raebareli, India
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Tan MSA, Parekh HS, Pandey P, Siskind DJ, Falconer JR. Nose-to-brain delivery of antipsychotics using nanotechnology: a review. Expert Opin Drug Deliv 2020; 17:839-853. [PMID: 32343186 DOI: 10.1080/17425247.2020.1762563] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Orally-administered antipsychotics are effective in the management of psychosis-related disorders although generation-specific adverse drug reactions (ADRs) significantly hinder clinical outcomes, driven by issues such as patient non-compliance. Direct nose-to-brain (N2B) delivery of antipsychotics via the olfactory epithelium could avert peripheral ADRs by maximizing cerebral drug concentrations, and reducing drug levels in the periphery. However, there exist physicochemical challenges related to psychotropic drugs, alongside biochemical barriers associated with targeting the olfactory region. Nanotechnological approaches present a viable strategy for the development of intranasal antipsychotic formulations where drug stability, mucosal absorption and cerebrospinal fluid (CSF)-bioavailability can be optimized. AREAS COVERED This review explores the unique anatomical features of the nasal cavity as a pathway for antipsychotic drug delivery to the brain. Nanocarrier-based approaches to encapsulate antipsychotics, and enhance stability, absorption and bioavailability are explored. The aim of this review is to determine current knowledge gaps for direct N2B psychotropic drug delivery, and identify clinically acceptable strategies to overcome them. EXPERT OPINION The olfactory epithelium may be the most effective and direct administration route for antipsychotic delivery to the central nervous system (CNS). This research is novel and has the potential to revolutionize the mode of delivery of neurological medicines to the CNS in the future.
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Affiliation(s)
- Madeleine S A Tan
- School of Pharmacy, The University of Queensland , Brisbane, Australia
| | - Harendra S Parekh
- School of Pharmacy, The University of Queensland , Brisbane, Australia
| | - Preeti Pandey
- School of Pharmacy, The University of Queensland , Brisbane, Australia
| | - Dan J Siskind
- Mobile Intensive Rehabilitation Team, Princess Alexandra Hospital, Metro South Addiction and Mental Health Service , Woolloongabba, Qld, Australia.,Department of Psychiatry, School of Clinical Medicine, University of Queensland , Woolloongabba, Qld, Australia
| | - James R Falconer
- School of Pharmacy, The University of Queensland , Brisbane, Australia
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15
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Bors LA, Bajza Á, Mándoki M, Tasi BJ, Cserey G, Imre T, Szabó P, Erdő F. Modulation of nose-to-brain delivery of a P-glycoprotein (MDR1) substrate model drug (quinidine) in rats. Brain Res Bull 2020; 160:65-73. [PMID: 32344126 DOI: 10.1016/j.brainresbull.2020.04.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/07/2020] [Accepted: 04/16/2020] [Indexed: 02/07/2023]
Abstract
During the last decades several new drug formulations were developed to target the central nervous system (CNS) from the nasal cavity. However, in these studies less attention was paid to the possible drug-drug interactions in case of multi-drug therapy. In our pilot study first we compared a nasal solution and a nasal gel to demonstrate their distribution in the nasal cavity (3D printed rat skull model and histology). Due to the aspiration induced high mortality at administration of nasal solution the study was continued only with the gel formulation of quinidine. The aim of our experiments was to identify the possible functional role of P-glycoprotein (P-gp) in the drug absorption in nasal cavity and to test drug-drug interactions at nose-to-brain delivery. Therefore, a P-gp substrate model drug, quinidine was tested by intranasal (IN) administration in presence of PSC-833 (specific P-gp inhibitor) given intravenously (IV) or IN and adrenaline (IN) at low (50 ng) or high (20 μg) dose. In control animals the brain penetration of quinidine was at the level of detection limit, but in combination therapy with IV PSC-833 the brain levels increased dramatically, similarly to high dose IN adrenalin, where due to vasoconstriction peripheral distribution was blocked. These results indicate that P-gp has an important role in drug absorption and efflux at nasal cavity, while adrenaline is also able to modify the penetration profile of the P-gp substrate model drug at nasal application as it decreases nose-to-blood absorption, letting more quinidine to reach the brain along with the nasal nerves.
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Affiliation(s)
- Luca Anna Bors
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Budapest, Hungary.
| | - Ágnes Bajza
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Budapest, Hungary.
| | - Míra Mándoki
- University of Veterinary Medicine, Department of Pathology, Budapest, Hungary.
| | - Benedek József Tasi
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Budapest, Hungary.
| | - György Cserey
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Budapest, Hungary.
| | - Tímea Imre
- Research Centre for Natural Sciences, Instrumentation Centre, Budapest, Hungary.
| | - Pál Szabó
- Research Centre for Natural Sciences, Instrumentation Centre, Budapest, Hungary.
| | - Franciska Erdő
- Pázmány Péter Catholic University, Faculty of Information Technology and Bionics, Budapest, Hungary.
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Wang QS, Li K, Gao LN, Zhang Y, Lin KM, Cui YL. Intranasal delivery of berberine via in situ thermoresponsive hydrogels with non-invasive therapy exhibits better antidepressant-like effects. Biomater Sci 2020; 8:2853-2865. [DOI: 10.1039/c9bm02006c] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Intranasal delivery of thermoresponsive hydrogels can improve the bioavailability of berberine in the brain, so as to improve the antidepressant effect.
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Affiliation(s)
- Qiang-Song Wang
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Science & Peking Union Medical College
- Tianjin 300192
- PR China
| | - Kefeng Li
- School of Medicine
- University of California
- San Diego (UCSD)
- San Diego
- USA
| | - Li-Na Gao
- Tianjin State Key Laboratory of Modern Chinese Medicine
- Research Center of Traditional Chinese Medicine
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- PR China
| | - Ye Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine
- Research Center of Traditional Chinese Medicine
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- PR China
| | - Ke-Ming Lin
- Tianjin State Key Laboratory of Modern Chinese Medicine
- Research Center of Traditional Chinese Medicine
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- PR China
| | - Yuan-Lu Cui
- Tianjin State Key Laboratory of Modern Chinese Medicine
- Research Center of Traditional Chinese Medicine
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- PR China
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17
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Nasal Drug Delivery of Anticancer Drugs for the Treatment of Glioblastoma: Preclinical and Clinical Trials. Molecules 2019; 24:molecules24234312. [PMID: 31779126 PMCID: PMC6930669 DOI: 10.3390/molecules24234312] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 11/22/2019] [Accepted: 11/24/2019] [Indexed: 12/18/2022] Open
Abstract
Glioblastoma (GBM) is the most lethal form of brain tumor, being characterized by the rapid growth and invasion of the surrounding tissue. The current standard treatment for glioblastoma is surgery, followed by radiotherapy and concurrent chemotherapy, typically with temozolomide. Although extensive research has been carried out over the past years to develop a more effective therapeutic strategy for the treatment of GBM, efforts have not provided major improvements in terms of the overall survival of patients. Consequently, new therapeutic approaches are urgently needed. Overcoming the blood–brain barrier (BBB) is a major challenge in the development of therapies for central nervous system (CNS) disorders. In this context, the intranasal route of drug administration has been proposed as a non-invasive alternative route for directly targeting the CNS. This route of drug administration bypasses the BBB and reduces the systemic side effects. Recently, several formulations have been developed for further enhancing nose-to-brain transport, mainly with the use of nano-sized and nanostructured drug delivery systems. The focus of this review is to provide an overview of the strategies that have been developed for delivering anticancer compounds for the treatment of GBM while using nasal administration. In particular, the specific properties of nanomedicines proposed for nose-to-brain delivery will be critically evaluated. The preclinical and clinical data considered supporting the idea that nasal delivery of anticancer drugs may represent a breakthrough advancement in the fight against GBM.
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18
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Strategies to facilitate or block nose-to-brain drug delivery. Int J Pharm 2019; 570:118635. [PMID: 31445062 DOI: 10.1016/j.ijpharm.2019.118635] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/17/2019] [Accepted: 08/19/2019] [Indexed: 02/06/2023]
Abstract
Nose-to-brain delivery has gained significant interest over the past several decades. This has resulted in numerous strategies described to improve the delivery of drugs to the brain directly through the olfactory epithelium of the nasal cavity. In some cases, intranasal administration may be more effective than other routes of administration in treating central nervous system and related disorders. Here, we briefly review the strategies that have been used to facilitate nose-to-brain delivery as well as approaches to block the delivery of drugs from the nose to the brain. Even though numerous strategies have already been used to increase nose-to-brain delivery, the research for strategies inhibitory of nose-to-brain delivery seems to be scarce.
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19
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Ahmed TA, El-Say KM, Ahmed OA, Aljaeid BM. Superiority of TPGS-loaded micelles in the brain delivery of vinpocetine via administration of thermosensitive intranasal gel. Int J Nanomedicine 2019; 14:5555-5567. [PMID: 31413562 PMCID: PMC6662514 DOI: 10.2147/ijn.s213086] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 06/27/2019] [Indexed: 11/23/2022] Open
Abstract
Background: Vinpocetine (VPN) is a synthetic derivative of the Vinca minor alkaloids. The drug is characterized by a short half-life, limited water solubility and high hepatic first-pass effect. The objective was to develop different lipid-based nanocarriers (NCs) loaded into a thermosensitive in situ gelling (ISG) system to improve VPN bioavailability and brain targeting via intranasal (IN) delivery. Methods: Different lipid-based NCs were developed and characterized for vesicle size, zeta potential, VPN entrapment efficiency (EE) and morphological characterization using transmission electron microscope (TEM). The prepared NCs were loaded into ISG formulations and characterized for their mucoadhesive properties. Ex-vivo permeation and histological study of the nasal mucosa were conducted. Pharmacokinetic and brain tissue distribution were investigated and compared to a marketed VPN product following administration of a single dose to rats. Results: VPN-D-α-Tocopherol polyethylene glycol 1000 succinate (TPGS) micelles nano-formulation showed the smallest particle size, highest EE among the studied NCs. TEM images revealed an almost spherical shape for all the prepared NCs. Among the NCs studied, VPN-loaded TPGS micelles demonstrated the highest percent cumulative VPN ex vivo permeation. All the prepared ISG formulations revealed the presence of mucoadhesive properties and showed no signs of inflammation or necrosis upon histological examination. Rats administered IN VPN-loaded TPGS-micelles ISG showed superior VPN concentration in the brain tissue and significant high relative bioavailability when compared to that received raw VPN-loaded ISG and marketed drug oral tablets. VPN-D-α-Tocopherol polyethylene glycol 1000 succinate (TPGS) micelles nano-formulation showed the smallest particle size, highest EE among the studied NCs. TEM images revealed an almost spherical shape for all the prepared NCs. Among the NCs studied, VPN-loaded TPGS micelles demonstrated the highest percent cumulative VPN ex vivo permeation. All the prepared ISG formulations revealed the presence of mucoadhesive properties and showed no signs of inflammation or necrosis upon histological examination. Rats administered IN VPN-loaded TPGS-micelles ISG showed superior VPN concentration in the brain tissue and significant high relative bioavailability when compared to that received raw VPN-loaded ISG and marketed drug oral tablets. Conclusion: VPN-loaded TPGS-micelles ISG formulation is a successful brain drug delivery system with enhanced bioavailability for drugs with poor bioavailability and those that are frequently administered.
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Affiliation(s)
- Tarek A Ahmed
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Cairo 11651, Egypt
| | - Khalid M El-Say
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Al-Azhar University, Cairo 11651, Egypt
| | - Osama Aa Ahmed
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia.,Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Bader M Aljaeid
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
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20
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Evaluation of intranasal delivery route of drug administration for brain targeting. Brain Res Bull 2018; 143:155-170. [PMID: 30449731 DOI: 10.1016/j.brainresbull.2018.10.009] [Citation(s) in RCA: 400] [Impact Index Per Article: 66.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 10/20/2018] [Accepted: 10/23/2018] [Indexed: 12/22/2022]
Abstract
The acute or chronic drug treatments for different neurodegenerative and psychiatric disorders are challenging from several aspects. The low bioavailability and limited brain exposure of oral drugs, the rapid metabolism, elimination, the unwanted side effects and also the high dose to be added mean both inconvenience for the patients and high costs for the patients, their family and the society. The reason of low brain penetration of the compounds is that they have to overcome the blood-brain barrier which protects the brain against xenobiotics. Intranasal drug administration is one of the promising options to bypass blood-brain barrier, to reduce the systemic adverse effects of the drugs and to lower the doses to be administered. Furthermore, the drugs administered using nasal route have usually higher bioavailability, less side effects and result in higher brain exposure at similar dosage than the oral drugs. In this review the focus is on giving an overview on the anatomical and cellular structure of nasal cavity and absorption surface. It presents some possibilities to enhance the drug penetration through the nasal barrier and summarizes some in vitro, ex vivo and in vivo technologies to test the drug delivery across the nasal epithelium into the brain. Finally, the authors give a critical evaluation of the nasal route of administration showing its main advantages and limitations of this delivery route for CNS drug targeting.
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21
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Gangurde PK, Ajitkumar B. N, Kumar L. Lamotrigine Lipid Nanoparticles for Effective Treatment of Epilepsy: a Focus on Brain Targeting via Nasal Route. J Pharm Innov 2018. [DOI: 10.1007/s12247-018-9343-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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22
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Crespo C, Liberia T, Blasco-Ibáñez JM, Nácher J, Varea E. Cranial Pair I: The Olfactory Nerve. Anat Rec (Hoboken) 2018; 302:405-427. [PMID: 29659152 DOI: 10.1002/ar.23816] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 05/29/2017] [Accepted: 06/15/2017] [Indexed: 12/13/2022]
Abstract
The olfactory nerve constitutes the first cranial pair. Compared with other cranial nerves, it depicts some atypical features. First, the olfactory nerve does not form a unique bundle. The olfactory axons join other axons and form several small bundles or fascicles: the fila olfactoria. These fascicles leave the nasal cavity, pass through the lamina cribrosa of the ethmoid bone and enter the brain. The whole of these fascicles is what is known as the olfactory nerve. Second, the olfactory sensory neurons, whose axons integrate the olfactory nerve, connect the nasal cavity and the brain without any relay. Third, the olfactory nerve is composed by unmyelinated axons. Fourth, the olfactory nerve contains neither Schwann cells nor oligodendrocytes wrapping its axons. But it contains olfactory ensheathing glia, which is a type of glia unique to this nerve. Fifth, the olfactory axons participate in the circuitry of certain spherical structures of neuropil that are unique in the brain: the olfactory glomeruli. Sixth, the axons of the olfactory nerve are continuously replaced and their connections in the central nervous system are remodeled continuously. Therefore, the olfactory nerve is subject to lifelong plasticity. Finally seventh, the olfactory nerve can be a gateway for the direct entrance of viruses, neurotoxins and other xenobiotics to the brain. In the same way, it can be used as a portal of entry to the brain for therapeutic substances, bypassing the blood-brain barrier. In this article, we analyze some features of the anatomy and physiology of the first cranial pair. Anat Rec, 302:405-427, 2019. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Carlos Crespo
- Department of Cell Biology, Interdisciplinary Research Structure for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Spain
| | - Teresa Liberia
- Departments of Neurosurgery and Neuroscience, Yale University School of Medicine, New Haven, Connecticut
| | - José Miguel Blasco-Ibáñez
- Department of Cell Biology, Interdisciplinary Research Structure for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Spain
| | - Juan Nácher
- Department of Cell Biology, Interdisciplinary Research Structure for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Spain
| | - Emilio Varea
- Department of Cell Biology, Interdisciplinary Research Structure for Biotechnology and Biomedicine (BIOTECMED), University of Valencia, Spain
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23
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Abstract
The nasal route is commonly used for local delivery of drugs to treat inflammatory conditions. It is also an attractive route for systemic delivery of some drugs. Irrespective of intended use, administered drugs must permeate the epithelial or olfactory membrane to be effective. The enthusiasm for potential use of the nasal route for systemic drug delivery has not been met by comparable success. In this paper, the anatomical and physiological attributes of the nasal cavity and paranasal sinuses important for drug delivery and challenges limiting drug absorption are discussed. Efforts made so far in improving nasal drug absorption such as overcoming restrictive nasal geometry and paranasal sinuses accessibility, mucociliary clearance, absorption barriers, metabolism and drug physicochemical challenges are discussed. Highlights on future prospects of nasal drug delivery/absorption were discussed.
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24
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Ponto LLB, Huang J, Walsh SA, Acevedo MR, Mundt C, Sunderland J, Donovan M. Demonstration of Nucleoside Transporter Activity in the Nose-to-Brain Distribution of [ 18F]Fluorothymidine Using PET Imaging. AAPS JOURNAL 2017; 20:16. [PMID: 29218445 DOI: 10.1208/s12248-017-0158-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 10/21/2017] [Indexed: 12/17/2022]
Abstract
To evaluate the role of nucleoside transporters in the nose-to-brain uptake of [18F]fluorothymidine (FLT), an equilibrative nucleoside transporter (ENT1,2) and concentrative nucleoside transporter (CNT1-3) substrate, using PET to measure local tissue concentrations. Anesthetized Sprague-Dawley rats were administered FLT by intranasal (IN) instillation or tail-vein injection (IV). NBMPR (nitrobenzylmercaptopurine riboside), an ENT1 inhibitor, was administered either IN or intraperitoneally (IP). Dynamic PET imaging was performed for up to 40 min. A CT was obtained for anatomical co-registration and attenuation correction. Time-activity curves (TACs) were generated for the olfactory bulb (OB) and remaining brain, and the area-under-the-curve (AUC) for each TAC was calculated to determine the total tissue exposure of FLT. FLT concentrations were higher in the OB than in the rest of the brain following IN administration. IP administration of NBMPR resulted in increased OB and brain FLT exposure following both IN and IV administration, suggesting that NBMPR decreases the clearance rate of FLT from the brain. When FLT and NBMPR were co-administered IN, there was a decrease in the OB AUC while an increase in the brain AUC was observed. The decrease in OB exposure was likely the result of inhibition of ENT1 uptake activity in the nose-to-brain transport pathway. FLT distribution patterns show that nucleoside transporters, including ENT1, play a key role in the distribution of transporter substrates between the nasal cavity and the brain via the OB.
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Affiliation(s)
- Laura L Boles Ponto
- Roy J. and Lucille A. Carver College of Medicine, Department of Radiology, University of Iowa, Iowa City, Iowa, USA. .,PET Imaging Center, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, Iowa, 52242, USA.
| | - Jiangeng Huang
- College of Pharmacy, Division of Pharmaceutics and Translational Therapeutics, University of Iowa, Iowa City, Iowa, USA.,Department of Pharmaceutics, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Susan A Walsh
- Roy J. and Lucille A. Carver College of Medicine, Department of Radiology, University of Iowa, Iowa City, Iowa, USA
| | - Michael R Acevedo
- Roy J. and Lucille A. Carver College of Medicine, Department of Radiology, University of Iowa, Iowa City, Iowa, USA
| | - Christine Mundt
- Roy J. and Lucille A. Carver College of Medicine, Department of Radiology, University of Iowa, Iowa City, Iowa, USA.,PET Imaging Center, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, Iowa, 52242, USA
| | - John Sunderland
- Roy J. and Lucille A. Carver College of Medicine, Department of Radiology, University of Iowa, Iowa City, Iowa, USA.,PET Imaging Center, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, Iowa, 52242, USA
| | - Maureen Donovan
- College of Pharmacy, Division of Pharmaceutics and Translational Therapeutics, University of Iowa, Iowa City, Iowa, USA
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25
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Kapoor M, Cloyd JC, Siegel RA. A review of intranasal formulations for the treatment of seizure emergencies. J Control Release 2016; 237:147-59. [PMID: 27397490 DOI: 10.1016/j.jconrel.2016.07.001] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/30/2016] [Accepted: 07/01/2016] [Indexed: 12/20/2022]
Abstract
Epileptic seizure emergencies are life-threatening conditions, which in their most severe form, status epilepticus, have a high mortality rate if not quickly terminated. Treatment requires rapid delivery of anti-epileptics such as benzodiazepines to the brain. The nasal route is attractive due to its non-invasiveness, potential for direct nose to brain delivery, high vascularity, relatively large absorptive surface area, and avoidance of intestinal/liver metabolism. However, the limited volume of the nasal cavity and poor water solubility of anti-epileptics restrict absorption, leading to insufficient therapeutic brain levels. This review covers various formulation approaches adopted to improve nasal delivery of drugs, especially benzodiazepines, used to treat seizure emergencies. Other general topics such as nasal anatomy, challenges to nasal delivery, and drug/formulation considerations for nose to brain delivery are also discussed.
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Affiliation(s)
- Mamta Kapoor
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, USA
| | - James C Cloyd
- Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, MN, USA; Department of Neurology, University of Minnesota, Minneapolis, MN, USA
| | - Ronald A Siegel
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, USA; Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN, USA.
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26
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Shah B, Khunt D, Misra M, Padh H. Non-invasive intranasal delivery of quetiapine fumarate loaded microemulsion for brain targeting: Formulation, physicochemical and pharmacokinetic consideration. Eur J Pharm Sci 2016; 91:196-207. [PMID: 27174656 DOI: 10.1016/j.ejps.2016.05.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 04/08/2016] [Accepted: 05/08/2016] [Indexed: 11/15/2022]
Abstract
Systemic drug delivery in schizophrenia is a major challenge due to presence of obstacles like, blood-brain barrier and P-glycoprotein, which prohibit entry of drugs into the brain. Quetiapine fumarate (QF), a substrate to P-glycoprotein under goes extensive first pass metabolism leading to limited absorption thus necessitating frequent oral administration. The aim of this study was to develop QF based microemulsion (ME) with and without chitosan (CH) to investigate its potential use in improving the bioavailability and brain targeting efficiency following non-invasive intranasal administration. QF loaded ME and mucoadhesive ME (MME) showed globule size, pH and viscosity in the range of 29-47nm, 5.5-6.5 and 17-40cP respectively. CH-ME with spherical globules having mean size of 35.31±1.71nm, pH value of 5.61±0.16 showed highest ex-vivo nasal diffusion (78.26±3.29%) in 8h with no sign of structural damage upon histopathological examination. Circular plume with an ovality ratio closer to 1.3 for CH-ME depicted ideal spray pattern. Significantly higher brain/blood ratio of CH-ME in comparison to QF-ME and drug solution following intranasal administration revealed prolonged retention of QF at site of action suggesting superiority of CH as permeability enhancer. Following intranasal administration, 2.7 and 3.8 folds higher nasal bioavailability in brain with CH-ME compared to QF-ME and drug solution respectively is indicative of preferential nose to brain transport (80.51±6.46%) bypassing blood-brain barrier. Overall, the above finding shows promising results in the area of developing non-invasive intranasal route as an alternative to oral route for brain delivery.
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Affiliation(s)
- Brijesh Shah
- Department of Pharmaceutics, B. V. Patel PERD Centre, Ahmedabad 380054, India.
| | - Dignesh Khunt
- Department of Pharmaceutics, NIPER-Ahmedabad, C/O. B. V. Patel PERD Centre, Ahmedabad, India.
| | - Manju Misra
- Department of Pharmaceutics, NIPER-Ahmedabad, C/O. B. V. Patel PERD Centre, Ahmedabad, India.
| | - Harish Padh
- Sardar Patel University, Vallabh Vidyanagar, India.
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27
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Dolberg AM, Reichl S. Expression of P-glycoprotein in excised human nasal mucosa and optimized models of RPMI 2650 cells. Int J Pharm 2016; 508:22-33. [PMID: 27155589 DOI: 10.1016/j.ijpharm.2016.05.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 05/01/2016] [Accepted: 05/02/2016] [Indexed: 01/30/2023]
Abstract
To assess the transmucosal drug transport in the development of medications for intranasal administration, cellular in vitro models are preferred over the use of animal tissues due to inter-species variations and ethical concerns. With regard to the distribution of active agents and multidrug resistance, the ABC transporter P-glycoprotein plays a major role in several mammalian tissues. The present study compares the expression of this efflux pump in optimized in vitro models based on the human RPMI 2650 cell line with specimens of human turbinate mucosa. The presence of the ABCB1 gene was investigated at the mRNA and protein levels using RT-PCR and Western blot analysis in differently cultured RPMI 2650 cells and excised human nasal epithelium. Furthermore, the localization and activity of P-gp was examined by immunohistochemical staining and functionality assays using different substrates in both in vitro and ex vivo models. Both mRNA and protein expression of P-gp was found in all studied models. Furthermore, transporter functionality was detected in both RPMI 2650 cell culture models and excised human mucosa. The results demonstrated a highly promising comparability between RPMI 2650 models and explants of human nasal tissue concerning the influence of MDR1 on drug disposition. The RPMI 2650 cell line might become a useful tool in preclinical trials to improve reproducibility and achieve greater applicability to humans of experimental data regarding passive diffusion and active efflux of drug candidates.
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Affiliation(s)
- Anne M Dolberg
- Institut für Pharmazeutische Technologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Stephan Reichl
- Institut für Pharmazeutische Technologie, Technische Universität Braunschweig, Braunschweig, Germany; Zentrum für Pharmaverfahrenstechnik, Technische Universität Braunschweig, Braunschweig, Germany.
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28
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Narayan S, Sinsheimer JS, Paul KC, Liew Z, Cockburn M, Bronstein JM, Ritz B. Genetic variability in ABCB1, occupational pesticide exposure, and Parkinson's disease. ENVIRONMENTAL RESEARCH 2015; 143:98-106. [PMID: 26457621 PMCID: PMC4911423 DOI: 10.1016/j.envres.2015.08.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 08/15/2015] [Accepted: 08/21/2015] [Indexed: 06/02/2023]
Abstract
BACKGROUND Studies suggested that variants in the ABCB1 gene encoding P-glycoprotein, a xenobiotic transporter, may increase susceptibility to pesticide exposures linked to Parkinson's Disease (PD) risk. OBJECTIVES To investigate the joint impact of two ABCB1 polymorphisms and pesticide exposures on PD risk. METHODS In a population-based case control study, we genotyped ABCB1 gene variants at rs1045642 (c.3435C/T) and rs2032582 (c.2677G/T/A) and assessed occupational exposures to organochlorine (OC) and organophosphorus (OP) pesticides based on self-reported occupational use and record-based ambient workplace exposures for 282 PD cases and 514 controls of European ancestry. We identified active ingredients in self-reported occupational use pesticides from a California database and estimated ambient workplace exposures between 1974 and 1999 employing a geographic information system together with records for state pesticide and land use. With unconditional logistic regression, we estimated marginal and joint contributions for occupational pesticide exposures and ABCB1 variants in PD. RESULTS For occupationally exposed carriers of homozygous ABCB1 variant genotypes, we estimated odds ratios of 1.89 [95% confidence interval (CI): (0.87, 4.07)] to 3.71 [95% CI: (1.96, 7.02)], with the highest odds ratios estimated for occupationally exposed carriers of homozygous ABCB1 variant genotypes at both SNPs; but we found no multiplicative scale interactions. CONCLUSIONS This study lends support to a previous report that commonly used pesticides, specifically OCs and OPs, and variant ABCB1 genotypes at two polymorphic sites jointly increase risk of PD.
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Affiliation(s)
- Shilpa Narayan
- Department of Epidemiology, Fielding School of Public Health, UCLA, Los Angeles, CA, USA
| | - Janet S Sinsheimer
- Departments of Human Genetics and Biomathematics, David Geffen School of Medicine, and Department of Biostatistics, Fielding School of Public Health, UCLA, Los Angeles, CA, USA
| | - Kimberly C Paul
- Department of Epidemiology, Fielding School of Public Health, UCLA, Los Angeles, CA, USA
| | - Zeyan Liew
- Department of Epidemiology, Fielding School of Public Health, UCLA, Los Angeles, CA, USA
| | - Myles Cockburn
- Department of Preventative Medicine, University of Southern California (USC) Keck School of Medicine and Department of Geography, USC, Los Angeles, CA, USA
| | - Jeff M Bronstein
- Department of Neurology, School of Medicine, UCLA, Los Angeles, CA, USA
| | - Beate Ritz
- Department of Epidemiology, Fielding School of Public Health, UCLA, Los Angeles, CA, USA; Department of Neurology, School of Medicine, UCLA, Los Angeles, CA, USA.
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29
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Drug transporters in the nasal epithelium: an overview of strategies in targeted drug delivery. Future Med Chem 2015; 6:1381-97. [PMID: 25329195 DOI: 10.4155/fmc.14.77] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In this article, we discussed the expression of some ABC (e.g., P-glycoprortein, MRP and CFTR) and SLC (e.g., POT, DAT, OAT, OATP, OCT, EAAT2/GLT1 and GLUT) amino acid, metal and nucleoside transporters in the nasal mucosa. The localization and therapeutic targeting of these transporters are explored in detail. The wide array of transporters discovered so far in the nasal mucosa implies that a plethora of compounds can be delivered by targeting these transporters. The article concludes with a discussion of the potential challenges and delivery options for transporter-mediated drug targeting via the nasal route.
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30
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Al-Ghabeish M, Scheetz T, Assem M, Donovan MD. Microarray Determination of the Expression of Drug Transporters in Humans and Animal Species Used for the Investigation of Nasal Absorption. Mol Pharm 2015; 12:2742-54. [PMID: 26106909 DOI: 10.1021/acs.molpharmaceut.5b00103] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mice and rats are commonly used to investigate in vivo nasal drug absorption, yet their small nasal cavities limit their use for in vitro investigations. Bovine tissue explants have been used to investigate drug transport through the nasal respiratory and olfactory mucosae, yet limited information is available regarding the similarities and differences among these animal models compared to humans. The aim of this study was to compare the presence of a number of important drug transporters in the nasal mucosa of these species. DNA microarray results for nasal samples from humans, rats, and mice were obtained from GenBank, while DNA microarray and RT-PCR were performed on bovine nasal explants. The drug transporters of interest include multidrug resistance, cation, anion, peptide, and nucleoside transporters. Each of the species (mouse, rat, cattle, and human) shows similar patterns of expression for most of the important drug transporters. Several transporters were highly expressed in all the species, including MRP1, OCTN2, PEPT2, and y+LAT2. While some differences in transporter mRNA and protein expression were observed, the transporter expression patterns were quite similar among the species. The differences suggest that it is important to be aware of any specific differences in transporter expression for a given compound being investigated, yet the similarities support the continued use of these animal models during preclinical investigation of intranasally administered therapeutics.
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Affiliation(s)
- Manar Al-Ghabeish
- †Division of Pharmaceutics and Translational Therapeutics, University of Iowa, Iowa City, Iowa 52242, United States
| | - Todd Scheetz
- ‡Department of Biomedical Engineering, Department of Ophthalmology and Visual Sciences, and Center for Bioinformatics and Computational Biology, University of Iowa, Iowa City, Iowa 52242, United States
| | - Mahfoud Assem
- †Division of Pharmaceutics and Translational Therapeutics, University of Iowa, Iowa City, Iowa 52242, United States
| | - Maureen D Donovan
- †Division of Pharmaceutics and Translational Therapeutics, University of Iowa, Iowa City, Iowa 52242, United States
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31
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Influence of Dosage Form, Formulation, and Delivery Device on Olfactory Deposition and Clearance: Enhancement of Nose-to-CNS Uptake. J Pharm Innov 2015. [DOI: 10.1007/s12247-015-9222-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Abstract
The current therapeutic strategies are not efficient in treating disorders related to the central nervous system (CNS) and have only shown partial alleviation of symptoms, as opposed to, disease modifying effects. With change in population demographics, the incidence of CNS disorders, especially neurodegenerative diseases, is expected to rise dramatically. Current treatment regimens are associated with severe side-effects, especially given that most of these are chronic therapies and involve elderly population. In this review, we highlight the challenges and opportunities in delivering newer and more effective bio-therapeutic agents for the treatment of CNS disorders. Bio-therapeutics like proteins, peptides, monoclonal antibodies, growth factors, and nucleic acids are thought to have a profound effect on halting the progression of neurodegenerative disorders and also provide a unique function of restoring damaged cells. We provide a review of the nano-sized formulation-based drug delivery systems and alternate modes of delivery, like the intranasal route, to carry bio-therapeutics effectively to the brain.
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Yadav S, Gattacceca F, Panicucci R, Amiji MM. Comparative Biodistribution and Pharmacokinetic Analysis of Cyclosporine-A in the Brain upon Intranasal or Intravenous Administration in an Oil-in-Water Nanoemulsion Formulation. Mol Pharm 2015; 12:1523-33. [PMID: 25785492 DOI: 10.1021/mp5008376] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The main objective of this study was to evaluate comparative biodistribution and pharmacokinetics of cyclosporine-A (CsA) following intranasal (IN) administration versus intravenous (IV) administration in Sprague-Dawley rats using an oil-in-water nanoemulsion delivery system. CsA, a hydrophobic peptide that is also a substrate for P-glycoprotein, is a well-known immunosuppressive agent. In the brain, CsA has been shown to be a potent anti-inflammatory and neuroprotective agent. CsA nanoemulsions (CsA-NE) and solution formulations (CsA-S) were prepared using an ultrasonication method and were characterized for drug content, encapsulation efficiency, globule size, and zeta potential. We compared the uptake of CsA-NE and CsA-S in brain regions and peripheral organs following IN and IV administration using LC-MS/MS based bioanalytical method. CsA-NE IN resulted in the highest accumulation compared to that with any other treatment and route of administration; this was consistent for all three regions of brain that were evaluated (olfactory bulbs, mid brain, and hind brain). The brain/blood exposure ratios of 4.49, 0.01, 0.33, and 0.03 for CsA-NE (IN), CsA-NE (IV), CsA-S (IN), and CsA-S (IV), respectively, indicated that CsA-NE is capable of direct nose-to-brain transport, bypassing the blood-brain barrier. Furthermore, CsA-NE administration reduces nontarget organ exposure. These studies show that IN delivery of CsA-NE is an effective way of brain targeting compared to that of other treatment strategies. This approach not only enhances the brain concentration of the peptide but also significantly limits peripheral exposure and the potential for off-target toxicity.
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Affiliation(s)
- Sunita Yadav
- †Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, Massachusetts 02115, United States.,‡Novartis Institute of Biomedical Research, Cambridge, Massachusetts 02142, United States
| | - Florence Gattacceca
- §IRCM, Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Montpellier University, Montpellier F-34298, France
| | - Riccardo Panicucci
- ‡Novartis Institute of Biomedical Research, Cambridge, Massachusetts 02142, United States
| | - Mansoor M Amiji
- †Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, Massachusetts 02115, United States
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Cannabinoid antagonist in nanostructured lipid carriers (NLCs): design, characterization and in vivo study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 48:328-36. [DOI: 10.1016/j.msec.2014.12.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 10/22/2014] [Accepted: 12/05/2014] [Indexed: 12/24/2022]
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Nasal-to-CNS drug delivery: where are we now and where are we heading? An industrial perspective. Ther Deliv 2012; 3:195-208. [PMID: 22834197 DOI: 10.4155/tde.11.149] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Delivery of drug therapeutics across the blood-brain barrier is a challenging task for pharmaceutical scientists. Nasal-to-CNS drug delivery has shown promising results in preclinical efficacy models and investigatory human clinical trials. The further development of this technology with respect to the establishment of valid, predictable preclinical species models, translatable pharmacokinetic-pharmacodynamic relationships and definition of toxicology impact will help attract additional pharmaceutical investment in this drug-delivery approach. Further discoveries in nasal nanotechnology, targeted delivery devices and diagnostic olfactory imaging will serve to fuel the advancements in this area of drug delivery.
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Molinas A, Sicard G, Jakob I. Functional evidence of multidrug resistance transporters (MDR) in rodent olfactory epithelium. PLoS One 2012; 7:e36167. [PMID: 22563480 PMCID: PMC3341370 DOI: 10.1371/journal.pone.0036167] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 04/02/2012] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND P-glycoprotein (Pgp) and multidrug resistance-associated protein (MRP1) are membrane transporter proteins which function as efflux pumps at cell membranes and are considered to exert a protective function against the entry of xenobiotics. While evidence for Pgp and MRP transporter activity is reported for olfactory tissue, their possible interaction and participation in the olfactory response has not been investigated. PRINCIPAL FINDINGS Functional activity of putative MDR transporters was assessed by means of the fluorometric calcein acetoxymethyl ester (calcein-AM) accumulation assay on acute rat and mouse olfactory tissue slices. Calcein-AM uptake was measured as fluorescence intensity changes in the presence of Pgp or MRP specific inhibitors. Epifluorescence microscopy measured time course analysis in the olfactory epithelium revealed significant inhibitor-dependent calcein uptake in the presence of each of the selected inhibitors. Furthermore, intracellular calcein accumulation in olfactory receptor neurons was also significantly increased in the presence of either one of the Pgp or MRP inhibitors. The presence of Pgp or MRP1 encoding genes in the olfactory mucosa of rat and mouse was confirmed by RT-PCR with appropriate pairs of species-specific primers. Both transporters were expressed in both newborn and adult olfactory mucosa of both species. To assess a possible involvement of MDR transporters in the olfactory response, we examined the electrophysiological response to odorants in the presence of the selected MDR inhibitors by recording electroolfactograms (EOG). In both animal species, MRPs inhibitors induced a marked reduction of the EOG magnitude, while Pgp inhibitors had only a minor or no measurable effect. CONCLUSIONS The findings suggest that both Pgp and MRP transporters are functional in the olfactory mucosa and in olfactory receptor neurons. Pgp and MRPs may be cellular constituents of olfactory receptor neurons and represent potential mechanisms for modulation of the olfactory response.
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Affiliation(s)
- Adrien Molinas
- Equipe Neurophysiologie de la Peripherie des Systèmes Chimiosensoriels, Centre des Sciences du Goût et de l'Alimentation, CNRS UMR 6265, INRA, Université de Bourgogne, Dijon, France
| | - Gilles Sicard
- Equipe Neurophysiologie de la Peripherie des Systèmes Chimiosensoriels, Centre des Sciences du Goût et de l'Alimentation, CNRS UMR 6265, INRA, Université de Bourgogne, Dijon, France
| | - Ingrid Jakob
- Equipe Neurophysiologie de la Peripherie des Systèmes Chimiosensoriels, Centre des Sciences du Goût et de l'Alimentation, CNRS UMR 6265, INRA, Université de Bourgogne, Dijon, France
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Thiebaud N, Menetrier F, Belloir C, Minn AL, Neiers F, Artur Y, Le Bon AM, Heydel JM. Expression and differential localization of xenobiotic transporters in the rat olfactory neuro-epithelium. Neurosci Lett 2011; 505:180-5. [PMID: 22015764 DOI: 10.1016/j.neulet.2011.10.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 10/05/2011] [Accepted: 10/06/2011] [Indexed: 02/05/2023]
Abstract
Transporters, such as multidrug resistance P-glycoproteins (MDR), multidrug resistance-related proteins (MRP) and organic anion transporters (OATs), are involved in xenobiotic metabolism, particularly the cellular uptake or efflux of xenobiotics (and endobiotics) or their metabolites. The olfactory epithelium is exposed to both inhaled xenobiotics and those coming from systemic circulation. This tissue has been described as a pathway for xenobiotics to the brain via olfactory perineural space. Thereby, olfactory transporters and xenobiotic metabolizing enzymes, dedicated to the inactivation and the elimination of xenobiotics, have been involved in the toxicological protection of the brain, the olfactory epithelium itself and the whole body. These proteins could also have a role in the preservation of the olfactory sensitivity by inactivation and clearance of the excess of odorant molecules from the perireceptor space. The goal of the present study was to increase our understanding of the expression and the localization of transporters in this tissue. For most of the studied transporters, we observed an opposite mRNA expression pattern (RT-PCR) in the olfactory epithelium compared to the liver, which is considered to be the main metabolic organ. Olfactory epithelium mainly expressed efflux transporters (MRP, MDR). However, a similar pattern was observed between the olfactory epithelium and the olfactory bulb. We also demonstrate distinct cellular immunolocalization of the transporters in the olfactory epithelium. As previously reported, Mrp1 was mainly found in the supranuclear portions of supporting cells. In addition, Mrp3 and Mrp5 proteins, which were detected for the first time in olfactory epithelium, were localized to the olfactory neuron layer, while Mdr1 was localized to the capillary endothelium of lymphatic vessels in the subepithelial region. The pattern of expression and the distinct localization of the olfactory transporters showed in this work may highlight on their specific function in the whole olfactory epithelium.
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Affiliation(s)
- Nicolas Thiebaud
- Centre des Sciences du Goût et de l'Alimentation, UMR1324 INRA, UMR6265 CNRS, Université de Bourgogne, Agrosup Dijon, F-21000 Dijon, France
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Hoekman JD, Ho RJY. Effects of localized hydrophilic mannitol and hydrophobic nelfinavir administration targeted to olfactory epithelium on brain distribution. AAPS PharmSciTech 2011; 12:534-43. [PMID: 21519984 DOI: 10.1208/s12249-011-9614-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Accepted: 04/04/2011] [Indexed: 11/30/2022] Open
Abstract
Many nasally applied compounds gain access to the brain and the central nervous system (CNS) with varying degree. Direct nose-to-brain access is believed to be achieved through nervous connections which travel from the CNS across the cribriform plate into the olfactory region of the nasal cavity. However, current delivery strategies are not targeted to preferentially deposit drugs to the olfactory at cribriform. Therefore, we have developed a pressurized olfactory delivery (POD) device which consistently and non-invasively deposited a majority of drug to the olfactory region of the nasal cavity in rats. Using both a hydrophobic drug, mannitol (log P = -3.1), and a hydrophobic drug, nelfinavir (log P = 6.0), and POD device, we compared brain and blood levels after nasal deposition primarily on the olfactory region with POD or nose drops which deposited primarily on the respiratory region in rats. POD administration of mannitol in rats provided a 3.6-fold (p < 0.05) increase in cortex-to-blood ratio, compared to respiratory epithelium deposition with nose drop. Administration of nelfinavir provided a 13.6-fold (p < 0.05) advantage in cortex-to-blood ratio with POD administration, compared to nose drops. These results suggest that increasing the fraction of drug deposited on the olfactory region of the nasal cavity will result in increased direct nose-to-brain transport.
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Murambiwa P, Masola B, Govender T, Mukaratirwa S, Musabayane C. Anti-malarial drug formulations and novel delivery systems: a review. Acta Trop 2011; 118:71-9. [PMID: 21439929 DOI: 10.1016/j.actatropica.2011.03.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 03/15/2011] [Accepted: 03/16/2011] [Indexed: 10/18/2022]
Abstract
Artemisinin combination therapies have decreased malaria associated morbidity and mortality in several parts of the world. On the other hand, malaria cases have increased in sub-Saharan Africa largely due to falciparum resistance to the most frequently used drugs (chloroquine and sulphadoxine/pyrimethamine (SP) combination). Therapeutic failure has also been attributed in part to adverse effects of anti-malarial drugs and patients' non-compliance due to inconvenient dosing schedules. We consider that formulation and evaluation of novel drug delivery systems is not only less expensive than developing new drugs, but may also improve delivery of anti-malarials at the desired rates. In this review we evaluate the therapeutic efficacy of existing anti-malarial drugs and assess the feasibility of developing novel formulations and delivery systems.
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Di Stefano A, Iannitelli A, Laserra S, Sozio P. Drug delivery strategies for Alzheimer's disease treatment. Expert Opin Drug Deliv 2011; 8:581-603. [PMID: 21391862 DOI: 10.1517/17425247.2011.561311] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Current Alzheimer's disease (AD) therapy is based on the administration of the drugs donepezil, galantamine, rivastigmine and memantine. Until disease-modifying therapies become available, further research is needed to develop new drug delivery strategies to ensure ease of administration and treatment persistence. AREAS COVERED In addition to the conventional oral formulations, a variety of drug delivery strategies applied to the treatment of AD are reviewed in this paper, with a focus on strategies leading to simplified dosage regimens and to providing new pharmacological tools. Alternatives include extended release, orally disintegrating or sublingual formulations, intranasal or short- and long-acting intramuscular or transdermal forms, and nanotechnology-based delivery systems. EXPERT OPINION The advent of new research on molecular mechanisms of AD pathogenesis has outlined new strategies for therapeutic intervention; these include the stimulation of α-secretase cleavage, the inhibition of γ-secretase activity, the use of non-steroidal anti-inflammatory drugs, neuroprotection based on antioxidant therapy, the use of estrogens, NO synthetase inhibitors, and natural agents such as polyphenols. Unfortunately, these compounds might not help patients with end stage AD, but might hopefully slow or stop the disease process in its early stage. Nanotechnologies may prove to be a promising contribution in future AD drug delivery strategies, in particular drug carrier nano- or microsystems, which can limit the side effects of anti-Alzheimer drugs.
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Affiliation(s)
- Antonio Di Stefano
- G d'Annunzio University, School of Pharmacy, Department of Drug Sciences, Via dei Vestini 31, 66100 Chieti, Italy.
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Cho HJ, Choi MK, Lin H, Kim JS, Chung SJ, Shim CK, Kim DD. Expression and functional activity of P-glycoprotein in passaged primary human nasal epithelial cell monolayers cultured by the air-liquid interface method for nasal drug transport study. ACTA ACUST UNITED AC 2011; 63:385-91. [PMID: 21749386 DOI: 10.1111/j.2042-7158.2010.01221.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES P-glycoprotein (P-gp) is an efflux transporter encoded by the multidrug resistance gene (MDR1), which is also known as the human ABCB1 gene (ATP-binding cassette, subfamily-B). The objectives of this study were to investigate the expression of P-gp in passaged primary human nasal epithelial (HNE) cell monolayer, cultured by the air-liquid interface (ALI) method, and to evaluate its feasibility as an in-vitro model for cellular uptake and transport studies of P-gp substrates. METHODS Reverse transcriptase-polymerase chain reaction (RT-PCR) was performed to verify the expression of the MDR1 gene. Transport and cellular uptake studies with P-gp substrate (rhodamine123) and P-gp inhibitors (verapamil and cyclosporin A) were conducted to assess the functional activity of P-gp in HNE cell monolayers cultured by the ALI method. KEY FINDINGS MDR1 gene expression in primary HNE cell monolayers cultured by ALI method was confirmed by RT-PCR. The apparent permeability coefficient (P(app) ) of the P-gp substrate (rhodamine123) in the basolateral to apical (B to A) direction was 6.9 times higher than that in the apical to basolateral (A to B) direction. B to A transport was saturated at high rhodamine123 concentration, and the treatment of P-gp inhibitors increased cellular uptake of rhodamine123 in a time- and concentration-dependent manner. CONCLUSIONS These results support the MDR1 gene expression and the functional activity of P-gp in primary HNE cell monolayers cultured by the ALI method.
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Affiliation(s)
- Hyun-Jong Cho
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea
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Shingaki T, Hidalgo IJ, Furubayashi T, Sakane T, Katsumi H, Yamamoto A, Yamashita S. Nasal delivery of P-gp substrates to the brain through the nose-brain pathway. Drug Metab Pharmacokinet 2011; 26:248-55. [PMID: 21317541 DOI: 10.2133/dmpk.dmpk-10-rg-108] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The objective of this study was to evaluate in rats the potential utility of the nasal route to enhance central nervous system (CNS) delivery of drugs recognized by P-glycoprotein (P-gp). Well-known P-gp substrates verapamil and talinolol were perfused nasally or infused intravenously, and when plasma concentrations following intravenous infusion and nasal perfusion showed similar profiles. The concentration of verapamil in the brain after nasal perfusion was twice that after intravenous infusion. Although talinolol in the brain and the cerebrospinal fluid after i.v. infusion were below the detection limit, it was detected after nasal perfusion. When rats were treated with cyclosporin A, brain concentrations of verapamil after both administration modes were increased significantly, while those of talinolol were not significantly changed. Since the permeability of talinolol is low, talinolol in the brain which was transported directly from the nasal cavity has little chance of transport by P-gp localized in the apical membrane of cerebral microvessel endothelial cells. The potential for drug delivery utilizing the nose-CNS route was confirmed for P-gp substrates. The advantage of nasal delivery over i.v. delivery of talinolol to the brain was more significant than that of verapamil, suggesting that nasal administration is more useful strategy for the brain delivery of low-permeability P-gp substrates than the use of P-gp inhibitors.
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Lee KR, Maeng HJ, Chae JB, Chong S, Kim DD, Shim CK, Chung SJ. Lack of a primary physicochemical determinant in the direct transport of drugs to the brain after nasal administration in rats: potential involvement of transporters in the pathway. Drug Metab Pharmacokinet 2010; 25:430-41. [PMID: 20924140 DOI: 10.2133/dmpk.dmpk-10-rg-049] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The objectives of this study were to evaluate the relative contribution of the direct pathway in overall brain transport for 17 model drugs with different physicochemical properties after nasal administrations and to identify factors that govern the fraction of the dose transported to the brain via the direct pathway (F(a, direct)). When the model drugs were nasally administered to rats, 5 of the 17 model drugs were delivered to a significant extent to the brain via the direct pathway. Multiple linear regression analyses showed that the correlation between various physicochemical properties and F(a, direct) was not statistically significant, indicative of a lack of primary physicochemical determinants in the direct transport pathway. Transporters such as rOAT3 and rOCT2 were expressed at significant levels in rat olfactory epithelia, and uptakes of standard substrates were significantly decreased in HEK293 cells expressing rOAT3 and rOCT2 in the presence of the five model drugs that were delivered to appreciable extents to the brain via the direct pathway. Therefore, these observations indicate that carrier-mediated transport may play a role in the brain delivery of drugs from the nose via the direct transport pathway.
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Affiliation(s)
- Kyeong-Ryoon Lee
- College of Pharmacy, Seoul National University, Gwanak 599, Gwanak-ro, Gwanak-gu, Seoul 151-742, South Korea
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Padowski JM, Pollack GM. Examination of the Ability of the Nasal Administration Route to Confer a Brain Exposure Advantage for Three Chemical Inhibitors of P-Glycoprotein. J Pharm Sci 2010; 99:3226-33. [DOI: 10.1002/jps.22070] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Dhuria SV, Hanson LR, Frey WH. Intranasal delivery to the central nervous system: mechanisms and experimental considerations. J Pharm Sci 2010; 99:1654-73. [PMID: 19877171 DOI: 10.1002/jps.21924] [Citation(s) in RCA: 798] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The blood-brain barrier (BBB) limits the distribution of systemically administered therapeutics to the central nervous system (CNS), posing a significant challenge to drug development efforts to treat neurological and psychiatric diseases and disorders. Intranasal delivery is a noninvasive and convenient method that rapidly targets therapeutics to the CNS, bypassing the BBB and minimizing systemic exposure. This review focuses on the current understanding of the mechanisms underlying intranasal delivery to the CNS, with a discussion of pathways from the nasal cavity to the CNS involving the olfactory and trigeminal nerves, the vasculature, the cerebrospinal fluid, and the lymphatic system. In addition to the properties of the therapeutic, deposition of the drug formulation within the nasal passages and composition of the formulation can influence the pathway a therapeutic follows into the CNS after intranasal administration. Experimental factors, such as head position, volume, and method of administration, and formulation parameters, such as pH, osmolarity, or inclusion of permeation enhancers or mucoadhesives, can influence formulation deposition within the nasal passages and pathways followed into the CNS. Significant research will be required to develop and improve current intranasal treatments and careful consideration should be given to the factors discussed in this review.
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Affiliation(s)
- Shyeilla V Dhuria
- Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
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Wong YC, Zuo Z. Intranasal delivery--modification of drug metabolism and brain disposition. Pharm Res 2010; 27:1208-23. [PMID: 20372990 DOI: 10.1007/s11095-010-0127-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Accepted: 03/22/2010] [Indexed: 01/01/2023]
Abstract
Intranasal route continues to be one of the main focuses of drug delivery research. Although it is generally perceived that the nasal route could avoid the first-pass metabolism in liver and gastrointestinal tract, the role of metabolic conversions in systemic and brain-targeted deliveries of the parent compounds and their metabolites should not be underestimated. In this commentary, metabolite formations after intranasal and other routes of administration are compared. Also, the disposition of metabolites in plasma and brain after nasal administrations of parent drugs, prodrugs and preformed metabolites will be discussed. The importance and implications of metabolism for future nasal drug development are highlighted.
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Affiliation(s)
- Yin Cheong Wong
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Room 610, Basic Medical Sciences Building, Shatin, New Territories, Hong Kong
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Mallants R, Vlaeminck V, Jorissen M, Augustijns P. An improved primary human nasal cell culture for the simultaneous determination of transepithelial transport and ciliary beat frequency. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.61.07.0007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Objectives
The aim was to establish a preclinical in-vitro system of the nasal mucosa for the simultaneous evaluation of nasal absorption and effects on ciliary activity.
Methods
Human nasal epithelial cells were grown in collagen-coated transport inserts with transparent polyethylene terephthalate membranes (3 μm). Transepithelial transport and ciliary beat frequency values were measured every 15 min for 1 h.
Key findings
The apparent permeability coefficients (Papp) for atenolol (mainly paracellular transport) and propranolol (transcellular transport) amounted to 0.1 ± 0.1 and 23.7 ± 0.6 × 10−6 cm/s, respectively, illustrating that the system can be used to discriminate between high permeability and low permeability compounds. Transport of talinolol (substrate for the P-glycoprotein efflux carrier) did not reveal polarity (0.3 ± 0.2 and 0.2 ± 0.1 × 10−6 cm/s for absorptive and secretory transport, respectively) and was not affected by verapamil (10 μm), suggesting the absence of P-glycoprotein in the nasal cell culture. No significant effects of atenolol, propranolol and talinolol on ciliary beat frequency were observed (98 ± 20% of the control condition after 60 min). Chlorocresol significantly decreased the ciliary activity but this decrease was not accompanied by effects on the transepithelial transport of atenolol, propranolol and talinolol.
Conclusions
A new system was developed which offers possibilities as a fast screening tool for studying the potential of compounds for nasal drug administration, since permeability and a possible cilio-toxic effect can be assessed simultaneously.
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Affiliation(s)
- Roel Mallants
- Laboratory for Pharmacotechnology and Biopharmacy, Katholieke Universiteit Leuven, Belgium
| | - Valerie Vlaeminck
- Laboratory for Experimental Otorhinolaryngology, Universitaire Ziekenhuizen Leuven, Belgium
| | - Mark Jorissen
- Laboratory for Experimental Otorhinolaryngology, Universitaire Ziekenhuizen Leuven, Belgium
| | - Patrick Augustijns
- Laboratory for Pharmacotechnology and Biopharmacy, Katholieke Universiteit Leuven, Belgium
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Blood–brain barrier P-glycoprotein function decreases in specific brain regions with aging: A possible role in progressive neurodegeneration. Neurobiol Aging 2009; 30:1818-24. [DOI: 10.1016/j.neurobiolaging.2008.02.002] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2007] [Revised: 01/11/2008] [Accepted: 02/05/2008] [Indexed: 11/22/2022]
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Stevens J, Suidgeest E, van der Graaf PH, Danhof M, de Lange ECM. A new minimal-stress freely-moving rat model for preclinical studies on intranasal administration of CNS drugs. Pharm Res 2009; 26:1911-7. [PMID: 19452129 PMCID: PMC2705718 DOI: 10.1007/s11095-009-9907-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2009] [Accepted: 05/07/2009] [Indexed: 11/28/2022]
Abstract
Purpose To develop a new minimal-stress model for intranasal administration in freely moving rats and to evaluate in this model the brain distribution of acetaminophen following intranasal versus intravenous administration. Methods Male Wistar rats received one intranasal cannula, an intra-cerebral microdialysis probe, and two blood cannulas for drug administration and serial blood sampling respectively. To evaluate this novel model, the following experiments were conducted. 1) Evans Blue was administered to verify the selectivity of intranasal exposure. 2) During a 1 min infusion 10, 20, or 40 μl saline was administered intranasally or 250 µl intravenously. Corticosterone plasma concentrations over time were compared as biomarkers for stress. 3) 200 µg of the model drug acetaminophen was given in identical setup and plasma, and brain pharmacokinetics were determined. Results In 96% of the rats, only the targeted nasal cavity was deeply colored. Corticosterone plasma concentrations were not influenced, neither by route nor volume of administration. Pharmacokinetics of acetaminophen were identical after intravenous and intranasal administration, although the Cmax in microdialysates was reached a little earlier following intravenous administration. Conclusion A new minimal-stress model for intranasal administration in freely moving rats has been successfully developed and allows direct comparison with intravenous administration.
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Affiliation(s)
- Jasper Stevens
- Division of Pharmacology, LACDR Leiden University, Leiden, The Netherlands
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Hussein MRA, Abu-Dief EE, Badawy BS, Ahmed MA. The postoperative histologic changes in the nasal mucosa following treatment with amoxycilline or rifampicin: preliminary findings. Pathol Res Pract 2008; 204:751-5. [PMID: 18603381 DOI: 10.1016/j.prp.2008.04.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Revised: 03/07/2008] [Accepted: 04/23/2008] [Indexed: 11/16/2022]
Abstract
This study examines the postoperative histologic changes in the nasal mucosa following treatment with amoxycilline or rifampicin. Three groups of nasal mucosal biopsies were obtained from 20 patients having undergone nasal surgery (partial middle turbinectomy). The first group was obtained immediately before surgery (control group). The second and third groups were taken postoperatively (after the first and 6 weeks of amoxycilline or rifampicin therapy, 10 patients each). The histologic changes in the nasal mucosa and the density of seromucinous glands were examined using histochemical methods and image analyzer. Amoxycilline treatment was associated with squamous metaplasia and a statistically significant reduction in the percent area of the seromucinous glands compared to the control group (p < 0.05). Rifampicin therapy was associated with minimal reduction in the density of the seromucinous glands and absence of metaplastic changes. In nasal surgeries, rifampicin but not amoxycilline had a beneficial effect on postoperative nasal mucosa status.
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Affiliation(s)
- Mahmoud Rezk A Hussein
- Pathology departments, Assir Central Hospital and King Khalid University College of Medicine, Abha, Saudi Arabia
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