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Delbreil P, Rabanel JM, Banquy X, Brambilla D. Therapeutic nanotechnologies for Alzheimer's disease: a critical analysis of recent trends and findings. Adv Drug Deliv Rev 2022; 187:114397. [PMID: 35738546 DOI: 10.1016/j.addr.2022.114397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/02/2022] [Accepted: 06/03/2022] [Indexed: 11/01/2022]
Abstract
Alzheimer's Disease (AD) is an irreversible neurodegenerative disease for which no disease modifying therapies are presently available. Besides the identification of pathological targets, AD presents numerous clinical and pharmacological challenges such as efficient active delivery to the central nervous system, cell targeting, and long-term dosing. Nanoparticles have been explored to overcome some of these challenges as drug delivery vehicles or drugs themselves. However, early promises have failed to materialize as no nanotechnology-based product has been able to reach the market and very few have moved past preclinical stages. In this review, we perform a critical analysis of the past decade's research on nanomedicine-based therapies for AD at the preclinical and clinical stages. The main obstacles to nanotechnology products and the most promising approaches were also identified, including renewed promise with gene editing, gene modulation, and vaccines.
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Affiliation(s)
- Philippe Delbreil
- Faculty of pharmacy, Université de Montréal, PO Box 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Jean-Michel Rabanel
- Faculty of pharmacy, Université de Montréal, PO Box 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Xavier Banquy
- Faculty of pharmacy, Université de Montréal, PO Box 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Davide Brambilla
- Faculty of pharmacy, Université de Montréal, PO Box 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada.
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2
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Rahman MM, Islam F, Afsana Mim S, Khan MS, Islam MR, Haque MA, Mitra S, Emran TB, Rauf A. Multifunctional Therapeutic Approach of Nanomedicines against Inflammation in Cancer and Aging. JOURNAL OF NANOMATERIALS 2022; 2022:1-19. [DOI: 10.1155/2022/4217529] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Cancer is a fatal disorder that affects people across the globe, yet existing therapeutics are ineffective. The development of submicrometer transport for optimizing the biodistribution of systemically provided medications is the focus of nanomedicine. Nanoparticle- (NP-) based treatments may enable the development of novel therapeutic approaches to combat this deadly disorder. In multifunctional, multimodal imaging, and drug delivery carriers, NPs generally play a major role. They have emerged as potential strategies for the invention of innovative therapeutic procedures in the last decade. The exponential growth of nanotechnologies in recent years has increased public awareness of the application of these innovative therapeutic approaches. Many tumor-targeted nanomedicines have been studied in cancer therapy, and there is clear evidence for a significant improvement in the therapeutic index of antineoplastic drugs. Age-related factors such as metabolic and physiological alterations in old age and inadequate animal models are currently understudied in nanomedicine and pharmacology. This review highlighted the most important targeting approaches, as well as public awareness, therapeutic advancements, and future prospects in age-related metabolic variations, and tumor-targeted nanomedicine studies.
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Affiliation(s)
- Md. Mominur Rahman
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Sadia Afsana Mim
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Md. Shajib Khan
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Md. Rezaul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Md. Anamul Haque
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Saikat Mitra
- Department of Pharmacy, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar, Swabi, Khyber Pakhtunkhwa, Pakistan
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3
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Song Y, Huang Y, Zhou F, Ding J, Zhou W. Macrophage-targeted nanomedicine for chronic diseases immunotherapy. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.090] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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4
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Gliszczyńska A, Nowaczyk M. Lipid Formulations and Bioconjugation Strategies for Indomethacin Therapeutic Advances. Molecules 2021; 26:1576. [PMID: 33809343 PMCID: PMC7998224 DOI: 10.3390/molecules26061576] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/04/2021] [Accepted: 03/09/2021] [Indexed: 11/17/2022] Open
Abstract
Indomethacin (IND) is a drug which after successful clinical trials became available for general prescription in 1965 and from that time is one of the most widely used anti-inflammatory drug with the highest potencies in the in vitro and in vivo models. However, despite its high therapeutic efficacy in relieving the symptoms of certain arthritis and in treating gout or collagen diseases, administration of IND causes a number of adverse effects, such as gastrointestinal ulceration, frequent central nervous system disorders and renal toxicity. These obstacles significantly limit the practical applications of IND and make that 10-20% of patients discontinue its use. Therefore, during the last three decades many attempts have been made to design novel formulations of IND aimed to increase its therapeutic benefits minimizing its adverse effects. In this review we summarize pharmacological information about IND and analyze its new lipid formulations and lipid bioconjugates as well as discuss their efficacy and potential application.
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Affiliation(s)
- Anna Gliszczyńska
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland;
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5
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Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease that results in severe inflammatory microenvironments in the joint tissues. In clinics, disease-modifying antirheumatic drugs (DMARDs) are generally prescribed to patients with RA, but their long-term use often shows toxicity in some organs such as the gastrointestinal system, skin, and kidneys and immunosuppression-mediated infection. Nanomedicine has emerged as a new therapeutic strategy to efficiently localize the drugs in inflamed joints for the treatment of RA. In this Review, we introduce recent research in the area of nanomedicine for the treatment of RA and discuss how the nanomedicine can be used to deliver therapeutic agents to the inflamed joints and manage the progression of RA, particularly focusing on targeted delivery, controlled drug release, and immune modulation.
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Affiliation(s)
- Moonkyoung Jeong
- Department of Bio and Brain Engineering and KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Ji-Ho Park
- Department of Bio and Brain Engineering and KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
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6
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Xu XL, Lu KJ, Yao XQ, Ying XY, Du YZ. Stimuli-responsive Drug Delivery Systems as an Emerging Platform for Treatment of Rheumatoid Arthritis. Curr Pharm Des 2020; 25:155-165. [PMID: 30907308 DOI: 10.2174/1381612825666190321104424] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 03/16/2019] [Indexed: 12/21/2022]
Abstract
Rheumatoid Arthritis (RA) is a systemic autoimmune disease accompanied by chronic inflammation. Due to the long-term infiltration in inflammatory sites, joints get steadily deteriorated, eventually resulting in functional incapacitation and disability. Despite the considerable effect, RA sufferers treated with current drug therapeutic efficacy are exposed to severe side effects. Application of Drug Delivery Systems (DDS) has improved these situations while the problem of limited drug exposure remains untackled. Stimuli-responsive DDS that are responsive to a variety of endogenous and exogenous stimuli, such as pH, redox status, and temperature, have emerged as a promising therapeutic strategy to optimize the drug release. Herein, we discussed the therapeutic regimes and serious side effects of current RA therapy, as well as focused on some of the potential stimuliresponsive DDS utilized in RA therapy. Besides, the prospective room in designing DDS for RA treatment has also been discussed.
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Affiliation(s)
- Xiao-Ling Xu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Kong-Jun Lu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xiao-Qin Yao
- School of Medicine, Zhejiang University City College, Hangzhou 310058, China
| | - Xiao-Ying Ying
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yong-Zhong Du
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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7
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Patel P, Meghani N, Kansara K, Kumar A. Nanotherapeutics for the Treatment of Cancer and Arthritis. Curr Drug Metab 2020; 20:430-445. [PMID: 30479211 DOI: 10.2174/1389200220666181127102720] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/11/2018] [Accepted: 10/11/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND Nanotechnology is gaining significant attention worldwide for the treatment of complex diseases such as AIDS (acquired immune deficiency syndrome), cancer and rheumatoid arthritis. Nanomedicine is the application of nanotechnology used for diagnosis and treatment for the disease that includes the preservation and improvement of human health by covering an area such as drug delivery using nanocarriers, nanotheranostics and nanovaccinology. The present article provides an insight into several aspects of nanomedicine such as usages of multiple types of nanocarriers, their status, advantages and disadvantages with reference to cancer and rheumatoid arthritis. METHODS An extensive search was performed on the bibliographic database for research article on nanotechnology and nanomedicine along with looking deeply into the aspects of these diseases, and how all of them are co-related. We further combined all the necessary information from various published articles and briefed to provide the current status. RESULTS Nanomedicine confers a unique technology against complex diseases which includes early diagnosis, prevention, and personalized therapy. The most common nanocarriers used globally are liposomes, polymeric nanoparticles, dendrimers, metallic nanoparticles, magnetic nanoparticles, solid lipid nanoparticles, polymeric micelles and nanotubes among others. CONCLUSION Nanocarriers are used to deliver drugs and biomolecules like proteins, antibody fragments, DNA fragments, and RNA fragments as the base of cancer biomarkers.
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Affiliation(s)
- Pal Patel
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad, 380009, Gujarat, India
| | - Nikita Meghani
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad, 380009, Gujarat, India
| | - Krupa Kansara
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad, 380009, Gujarat, India
| | - Ashutosh Kumar
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad, 380009, Gujarat, India
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Jayaraj P, Shavi GV, Srinivasan AK, Raghavendra R, Sivaramakrishna A, Desikan R. A pre-formulation strategy for the liposome encapsulation of new thioctic acid conjugates for enhanced chemical stability and use as an efficient drug carrier for MPO-mediated atherosclerotic CVD treatment. NEW J CHEM 2020. [DOI: 10.1039/c9nj05258e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lipoyl-apocynin and lipoyl-sesamol are bio-active conjugates of thioctic acid, synthesized using a benign chemical approachviathe combination of thioctic acid and the powerful bio-phytonutrients, apocynin and sesamol, respectively.
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Affiliation(s)
- Premkumar Jayaraj
- Department of Chemistry
- School of Advanced Sciences
- Vellore Institute of Technology
- Vellore
- India
| | - Gopal Venkatesh Shavi
- South Easter Applied Material Research Centre
- Waterford Institute of Technology
- Ireland
| | | | - Ramesh Raghavendra
- South Easter Applied Material Research Centre
- Waterford Institute of Technology
- Ireland
| | - Akella Sivaramakrishna
- Department of Chemistry
- School of Advanced Sciences
- Vellore Institute of Technology
- Vellore
- India
| | - Rajagopal Desikan
- Department of Chemistry
- School of Advanced Sciences
- Vellore Institute of Technology
- Vellore
- India
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9
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Mohanty S, Panda S, Bhanja A, Pal A, Chandra SS. Novel Drug Delivery Systems for Rheumatoid Arthritis: An Approach to Better Patient Compliance. ACTA ACUST UNITED AC 2019. [DOI: 10.13005/bpj/1624] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Recent advances in science and technology radically changed the way we detect, treat and prevent different diseases in all aspects of human life. Rheumatoid arthritis (RA) is a chronic, systemic, progressive, autoimmune disease in which the body’s immune system whose major role is to protect the health by attacking foreign bacteria and viruses are mistakenly, attacking the joints resulting in thickened synovium, pannus formation, & destruction of bone, cartilage. Still now researchers are unable to know the exact cause of this disease. However, it is believed that genes and environmental factors play a role in development of RA. In this review, we discuss the Pathophysiology, predictors, & factors involved in pathogenesis of RA. We also discuss the Conventional therapeutic agents for Rheumatoid Arthritis. More importantly, we extensively discuss the emerging novel drug delivery systems (NDDS) like nanoparticles, dendrimers, micelles, microspheres, liposomes, and so on as these are the promising tools having successful applications in overcoming the limitations associated with conventional drug delivery systems. Although several NDDS have been used for various purposes, liposomes have been focused on due to its potential applications in RA diagnosis and therapy. In addition, we discuss the therapeutic effectiveness and challenges for RA by using these novel drug delivery systems. Finally, we conclude by discussing the future perspectives.
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Affiliation(s)
- Sangeeta Mohanty
- School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan Deemed to be University, Bhubaneswar, India
| | - Sthitapragnya Panda
- School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan Deemed to be University, Bhubaneswar, India
| | - Aslesha Bhanja
- School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan Deemed to be University, Bhubaneswar, India
| | - Abhisek Pal
- School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan Deemed to be University, Bhubaneswar, India
| | - Si Sudam Chandra
- School of Pharmaceutical Sciences, Siksha ‘O’ Anusandhan Deemed to be University, Bhubaneswar, India
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10
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Discovery of a New Xanthone against Glioma: Synthesis and Development of (Pro)liposome Formulations. Molecules 2019; 24:molecules24030409. [PMID: 30678085 PMCID: PMC6384625 DOI: 10.3390/molecules24030409] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/18/2019] [Accepted: 01/22/2019] [Indexed: 02/02/2023] Open
Abstract
Following our previous work on the antitumor activity of acetylated flavonosides, a new acetylated xanthonoside, 3,6-bis(2,3,4,6-tetra-O-acetyl-β-glucopyranosyl)xanthone (2), was synthesized and discovered as a potent inhibitor of tumor cell growth. The synthesis involved the glycosylation of 3,6-di-hydroxyxanthone (1) with acetobromo-α-d-glucose. Glycosylation with silver carbonate decreased the amount of glucose donor needed, comparative to the biphasic glycosylation. Xanthone 2 showed a potent anti-growth activity, with GI50 < 1 μM, in human cell lines of breast, lung, and glioblastoma cancers. Current treatment for invasive brain glioma is still inadequate and new agents against glioblastoma with high brain permeability are urgently needed. To overcome these issues, xanthone 2 was encapsulated in a liposome. To increase the well-known low stability of these drug carriers, a proliposome formulation was developed using the spray drying method. Both formulations were characterized and compared regarding three months stability and in vitro anti-growth activity. While the proliposome formulation showed significantly higher stability, it was at the expense of losing its biocompatibility as a drug carrier in higher concentrations. More importantly, the new xanthone 2 was still able to inhibit the growth of glioblastoma cells after liposome formulation.
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11
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Durymanov M, Kamaletdinova T, Lehmann SE, Reineke J. Exploiting passive nanomedicine accumulation at sites of enhanced vascular permeability for non-cancerous applications. J Control Release 2017. [DOI: 10.1016/j.jconrel.2017.06.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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12
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Badri W, Miladi K, Nazari QA, Greige-Gerges H, Fessi H, Elaissari A. Encapsulation of NSAIDs for inflammation management: Overview, progress, challenges and prospects. Int J Pharm 2016; 515:757-773. [DOI: 10.1016/j.ijpharm.2016.11.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/17/2016] [Accepted: 11/01/2016] [Indexed: 12/20/2022]
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13
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Galvão AM, Galvão JS, Pereira MA, Cadena PG, Magalhães NSS, Fink JB, de Andrade AD, Castro CMMBD, de Sousa Maia MB. Cationic liposomes containing antioxidants reduces pulmonary injury in experimental model of sepsis: Liposomes antioxidants reduces pulmonary damage. Respir Physiol Neurobiol 2016; 231:55-62. [PMID: 27267466 DOI: 10.1016/j.resp.2016.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 05/17/2016] [Accepted: 06/01/2016] [Indexed: 01/04/2023]
Abstract
The intracellular redox state of alveolar cells is a determining factor for tolerance to oxidative and pro-inflammatory stresses. This study investigated the effects of intratracheal co-administration of antioxidants encapsulated in liposomes on the lungs of rats subjected to sepsis. For this, male rats subjected to sepsis induced by lipopolysaccharide from Escherichia coli or placebo operation were treated (intratracheally) with antibiotic, 0.9% saline and antioxidants encapsulated or non-encapsulated in liposomes. Experimental model of sepsis by cecal ligation and puncture (CLP) was performed in order to expose the cecum. The cecum was then gently squeezed to extrude a small amount of feces from the perforation site. As an index of oxidative damage, superoxide anions, lipid peroxidation, protein carbonyls, catalase activity, nitrates/nitrites, cell viability and mortality rate were measured. Infected animals treated with antibiotic plus antioxidants encapsulated in liposomes showed reduced levels of superoxide anion (54% or 7.650±1.263 nmol/min/mg protein), lipid peroxidation (33% or 0.117±0.041 nmol/mg protein), protein carbonyl (57% or 0.039 ± 0.022 nmol/mg protein) and mortality rate (3.3%), p value <0.001. This treatment also reduced the level of nitrite/nitrate and increased cell viability (90.7%) of alveolar macrophages. Taken togheter, theses results support that cationic liposomes containing antioxidants should be explored as coadjuvants in the treatment of pulmonary oxidative damage.
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Affiliation(s)
- Andre Martins Galvão
- Department of Microbiology and Cell Culture, Laboratory of Immunopathology Keizo Asami - LIKA, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP: 50780-901, Recife, Pernambuco, Brazil.
| | - Júlia Siqueira Galvão
- Department of Microbiology and Cell Culture, Laboratory of Immunopathology Keizo Asami - LIKA, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP: 50780-901, Recife, Pernambuco, Brazil
| | - Marcela Araújo Pereira
- Graduate Program in Biology Apllied to Health Sciences, Laboratory of Immunopathology Keizo Asami - LIKA, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP: 50780-901, Recife, Pernambuco, Brazil
| | - Pabyton Gonçalves Cadena
- Department of Morphology and Physiology, Federal Rural University of Pernambuco - UFRPE, Av. Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, CEP: 52171-900, Recife, Pernambuco, Brazil
| | - Nereide Stella Santos Magalhães
- Department of Nanobiotechnology, Laboratory of Immunopathology Keizo Asami - LIKA, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP: 50780-901, Recife, Pernambuco, Brazil
| | - James B Fink
- Division of Respiratory Therapy, Georgia State University, Atlanta, GA 30302, USA
| | - Armele Dornelas de Andrade
- Department of Physiotherapy, Federal University of Pernambuco - UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP: 50780-901, Recife, Pernambuco, Brazil
| | - Celia Maria Machado Barbosa de Castro
- Department of Microbiology and Cell Culture, Laboratory of Immunopathology Keizo Asami - LIKA, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP: 50780-901, Recife, Pernambuco, Brazil
| | - Maria Bernadete de Sousa Maia
- Department of Pharmacology and Physiology, Federal University of Pernambuco - UFPE, Av. Prof. Moraes Rego, 1235, Cidade Universitária, CEP: 50780-901, Recife, Pernambuco, Brazil
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14
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Utilization of nanoparticle technology in rheumatoid arthritis treatment. Biomed Pharmacother 2016; 80:30-41. [PMID: 27133037 DOI: 10.1016/j.biopha.2016.03.004] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/03/2016] [Accepted: 03/03/2016] [Indexed: 02/06/2023] Open
Abstract
Rheumatoid arthritis (RA) is one of the common and severe autoimmune diseases related to joints. This chronic autoimmune inflammatory disease, leads to functional limitation and reduced quality of life, since as there is bone and cartilage destruction, joint swelling and pain. Current advances and new treatment approaches have considerably postponed disease progression and improved the quality of life for many patients. In spite of major advances in therapeutic options, restrictions on the routes of administration and the necessity for frequent and long-term dosing often result in systemic adverse effects and patient non-compliance. Unlike usual drugs, nanoparticle systems are planned to deliver therapeutic agents especially to inflamed synovium, so avoiding systemic and unpleasant effects. The present review discusses about some of the most successful drugs in RA therapy and their side effects and also focuses on key design parameters of RA-targeted nanotechnology-based strategies for improving RA therapies.
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15
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Xu H, Hu M, Yu X, Li Y, Fu Y, Zhou X, Zhang D, Li J. Design and evaluation of pH-sensitive liposomes constructed by poly(2-ethyl-2-oxazoline)-cholesterol hemisuccinate for doxorubicin delivery. Eur J Pharm Biopharm 2015; 91:66-74. [PMID: 25660909 DOI: 10.1016/j.ejpb.2015.01.030] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 01/10/2015] [Accepted: 01/28/2015] [Indexed: 11/30/2022]
Abstract
In this study, a novel material, poly(2-ethyl-2-oxazoline)-cholesterol hemisuccinate (PEtOz-CHEMS), was synthesized to construct pH-sensitive liposomes. The structure of PEtOz-CHEMS was confirmed by thin-layer chromatography, Fourier transform infrared spectroscopy, and (1)H NMR. Anticancer fluorescent drug doxorubicin (DOX) was encapsulated into the liposomes. Compared with conventional liposomes (CL), CHEMS modified liposomes (CH-L) and PEGylated liposomes (PEG-L), the PEtOzylated liposomes (PEtOz-L) showed an acidic pH-induced increase in particle size. At pH 6.4, the heme release of PEtOz-L group was close to that of the positive control group, whereas that of CL, CH-L and PEG-L was close to that of the negative control group. In vitro drug release studies demonstrated that DOX was released from PEtOz-L in a pH-dependent manner, and the release of DOX from conventional DOX liposomes (CL-DOX), DOX loaded CH-L (CH-DOX-L) and PEGylated DOX liposomes (PEG-DOX-L) had no pronounced differences under each pH medium. In vitro cellular uptake assays showed that PEtOz-DOX-L indicated a significant fluorescence intensity at pH 6.4 compared with at pH 7.4. CL-DOX, CH-DOX-L and PEG-DOX-L did not achieve any obvious diversity at different pH conditions. Confocal laser scanning microscopy images showed that PEtOz-DOX-L can fuse with the endosomal membrane under acidic conditions of endosome, release DOX into the cytoplasm, then gather into the nucleus. Therefore, PEtOz can help liposomes achieve "endosomal escape". The in vitro cytotoxicity experiment results on A375 cells showed that PEtOz-DOX-L resulted in lower cell viability than CL-DOX, CH-DOX-L and PEG-DOX-L under low pH conditions. These results confirm that the pH-responsive PEtOz was a promising material for intracellular targeted delivery system and might be used for overcoming the "PEG dilemma".
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Affiliation(s)
- Huan Xu
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China.
| | - Meina Hu
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Xiu Yu
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Yan Li
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Yuanshan Fu
- Department of Anatomy, College of Basic Medical Science, Dlian Medical University, Dalian, PR China.
| | - Xiaoxia Zhou
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Di Zhang
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
| | - Jianying Li
- Department of Pharmacy, School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, PR China
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The shape/morphology balance: a study of stealth liposomes via fractal analysis and drug encapsulation. Pharm Res 2013; 30:2385-95. [PMID: 23743657 DOI: 10.1007/s11095-013-1082-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 05/12/2013] [Indexed: 10/26/2022]
Abstract
PURPOSE Fractal analysis was used as a tool in order to study the morphological characteristics of PEGylated liposomes. We report on the morphological characteristics of stealth liposomes composed of DPPC and DPPE-PEG 3000 in two dispersion media using fractal analysis. METHODS Light scattering techniques were used in order to elucidate the size, the morphology and the surface charge of PEGylated liposomes as a function of PEGylated lipid concentration and temperature. Fluorescence spectroscopy studies revealed a microenvironment of low polarity inside the liposomal membranes. RESULTS All formulations were found to retain their physicochemical characteristics for at least 3 weeks. The hydrodynamic radii (Rh) of stealth liposomes were stable in the process of heating up to 50°C; while the fractal dimension values (df) which correspond to their morphology, have been changed during heating. Hence, these results are a first indication of the presence of a heterogeneous microdomain structure of the stealth liposomal system. The amphiphilic drug indomethacin (IND) was successfully encapsulated within the liposomes and led to an increased size of stealth liposomes, while the morphology of liposomal vectors changed significantly at the highest molar ratio of PEGylated lipid. CONCLUSIONS We can state that this approach can promote a new analytical concept based on the morphological characteristics and quantify the shape of drug carriers complementary to that of the conventional analytical techniques.
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Xu H, Deng YH, Wang KQ, Chen DW. Preparation and characterization of stable pH-sensitive vesicles composed of α-tocopherol hemisuccinate. AAPS PharmSciTech 2012; 13:1377-85. [PMID: 23054989 DOI: 10.1208/s12249-012-9863-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Accepted: 09/21/2012] [Indexed: 11/30/2022] Open
Abstract
The current study aims to develop a stable pH-sensitive drug delivery system. First, cleavable polyethylene glycol-α-tocopherol hemisuccinate (PEG-THS) was synthesized. Conventional pH-sensitive vesicles composed of the Tris salt of α-tocopherol hemisuccinate (THST) were then prepared using the detergent removal technique. The vesicles had a mean particle size of (163.8 ± 5.5) nm and a zeta potential of -74.5 ± 6.4 mV. The THST vesicles were then modified using PEG-THS or uncleavable PEG-cholesterol (PEG-CHOL) (THST/PEG-lipids, 100:6 molar ratio). The mean vesicle particle size and absolute zeta potential decreased with increasing PEG-THS proportion. When the pH was decreased, the vesicle particle size and calcein release rate increased. The THST vesicles were initially Ca(2+)-unstable but exhibited significantly improved stability after modification with PEG-THS, especially at PEG-lipid ratios above 6%. Incubation in an acid serum increased the calcein release rate of conventional THST vesicles to 45 ± 1.98% at 10 min. However, the release rate of the PEG-CHOL vesicles remained low. The calcein release rate of PEG-THS vesicles was between those of conventional and PEG-CHOL-V. Therefore, PEG-THS can protect vesicles in serum and reconstitute their pH sensitivity in acidic conditions. Cleavable PEG-THS can be used in stable pH-sensitive preparations without loss of pH sensitivity. Free calcein and conventional vesicles eliminated from the plasma soon after injection, as well as the half-life (t(1/2)) and area under the curve of PEG-THS-V encapsulating calcein, were dramatically increased. This phenomenon indicates that the use of PEG-lipid derivatives has gained a favorably long circulation effect in mice.
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Guo B, Cheng Y, Li N, Li X, Jin M, Li T, Li J. In vitro and in vivo studies of galactose-modified liver-targeting liposomes. J Drug Target 2012; 21:257-264. [PMID: 23163746 DOI: 10.3109/1061186x.2012.741135] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Oridonin (ORI) is a bioactive diterpenoid compound extracted from the well known Chinese traditional medicine Rabdosia rubescens. The aim of this study was to prepare ORI loaded liposomes surface-modified with galactose (NOH-ORI-LP) and evaluate their characteristics compared with ORI loaded liposomes (ORI-LP) and ORI solution in vitro and in vivo. The NOH-ORI-LP was prepared by ethanol injection method. The NOH-ORI-LP was characterized by their morphology, particle size, zeta potential and encapsulation efficiency. The concentration of ORI in plasma and tissues at different sampling time points were determined. The liver concentration-time curves of NOH-ORI-LP in mice were determined, and the pharmacokinetic parameters were calculated and compared by statistical analysis. Our data revealed that NOH-ORI-LP has a particle size of about (173 ± 12) nm. The particles exhibit a negative electrical charge (-31.5 ± 1.6 mV), and possess high encapsulation efficiency (94.1 ± 1.2%). There were significantly different parameters of k10 and area under the plasma concentration-time curve (AUC0-t) between liposomes and solution. The mean residence time (MRT0-t) in plasma of NOH-ORI-LP was 5.56 times longer than that of solution. Compared with solution, NOH-ORI-LP delivered about 4.28 times higher ORI into liver. Thus, an optimum intravenous galactose-modified liposome formulation for ORI could be developed as an alternative to the commercial ORI preparations.
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Affiliation(s)
- Bohong Guo
- a Department of pharmacy, Guangdong Pharmaceutical University , Guangdong, Guangzhou, PR China
| | - Yi Cheng
- b School of Chinese Materia Medica, Guangzhou University of Chinese Medicine , Guangdong, Guangzhou, PR China
| | - Niying Li
- a Department of pharmacy, Guangdong Pharmaceutical University , Guangdong, Guangzhou, PR China
| | - Xiaofang Li
- a Department of pharmacy, Guangdong Pharmaceutical University , Guangdong, Guangzhou, PR China
| | - Miaozhen Jin
- a Department of pharmacy, Guangdong Pharmaceutical University , Guangdong, Guangzhou, PR China
| | - Ting Li
- a Department of pharmacy, Guangdong Pharmaceutical University , Guangdong, Guangzhou, PR China
| | - Jin Li
- a Department of pharmacy, Guangdong Pharmaceutical University , Guangdong, Guangzhou, PR China
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Liposomal Antioxidants for Protection against Oxidant-Induced Damage. J Toxicol 2011; 2011:152474. [PMID: 21876690 PMCID: PMC3157762 DOI: 10.1155/2011/152474] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 04/13/2011] [Accepted: 05/24/2011] [Indexed: 12/26/2022] Open
Abstract
Reactive oxygen species (ROS), including superoxide anion, hydrogen peroxide, and hydroxyl radical, can be formed as normal products of aerobic metabolism and can be produced at elevated rates under pathophysiological conditions. Overproduction and/or insufficient removal of ROS result in significant damage to cell structure and functions. In vitro studies showed that antioxidants, when applied directly and at relatively high concentrations to cellular systems, are effective in conferring protection against the damaging actions of ROS, but results from animal and human studies showed that several antioxidants provide only modest benefit and even possible harm. Antioxidants have yet to be rendered into reliable and safe therapies because of their poor solubility, inability to cross membrane barriers, extensive first-pass metabolism, and rapid clearance from cells. There is considerable interest towards the development of drug-delivery systems that would result in the selective delivery of antioxidants to tissues in sufficient concentrations to ameliorate oxidant-induced tissue injuries. Liposomes are biocompatible, biodegradable, and nontoxic artificial phospholipid vesicles that offer the possibility of carrying hydrophilic, hydrophobic, and amphiphilic molecules. This paper focus on the use of liposomes for the delivery of antioxidants in the prevention or treatment of pathological conditions related to oxidative stress.
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Pham CTN. Nanotherapeutic approaches for the treatment of rheumatoid arthritis. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2011; 3:607-19. [PMID: 21837725 DOI: 10.1002/wnan.157] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Rheumatoid arthritis (RA) is a common inflammatory disease characterized by progressive bone and cartilage destruction, resulting in severe functional limitations, shortened lifespan, and increased mortality rates. Recent advances and new treatment approaches have significantly delayed disease progression and improved the quality of life for many patients. Yet few patients attain or can be maintained in disease remission without continuous immunosuppressive therapy. In addition, a sizable portion of patients also fails to respond or eventually develops tolerance to current therapies. Thus there is a continued need for the development of new therapeutic strategies for the treatment of RA. Unlike conventional drugs, nanosystems are designed to deliver therapeutic agents specifically to the site of inflammation, therefore avoiding potential systemic and off-target unwanted effects. They allow investigators to consider or reconsider therapeutic agents that were previously deemed too toxic to deliver through a systemic route. This article reviews recent nanotechnology-based strategies that are being developed for the treatment of inflammatory arthritis.
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Affiliation(s)
- Christine T N Pham
- Division of Rheumatology, Washington University School of Medicine, Saint Louis, MO, USA.
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Sun Q, Shi M, Shao W, Shi Y, Xi Y, Huang G. Tissue distribution and pulmonary targeting studies of cefpiramide sodium-loaded liposomes. J Drug Target 2010; 19:49-55. [DOI: 10.3109/10611861003667607] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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22
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Puglia C, Trombetta D, Venuti V, Saija A, Bonina F. Evaluation of in-vivo topical anti-inflammatory activity of indometacin from liposomal vesicles. J Pharm Pharmacol 2010; 56:1225-32. [PMID: 15482636 DOI: 10.1211/0022357044445] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
The aim of this study was to evaluate the in-vivo drug release profile of indometacin-loaded liposomes into the skin. Large unilamellar vesicles (LUVs), composed of dipalmitoyl-L-α-phosphatidylcholine and cholesterol (9:1), were obtained using the extrusion method and then incorporated in hydrogels (LUV-A and LUV-B). The delivery of indometacin from the liposomal system was evaluated by determining its in-vivo local anti-inflammatory activity after cutaneous application of liposomal gel formulations; the anti-inflammatory activity is directly proportional to the amount of drug that actually crosses the skin. UVB-induced erythema on healthy human volunteers was chosen as the inflammatory model and the extent of erythema was monitored by the non-invasive technique of reflectance spectrophotometry. The results showed that LUV dispersions containing indometacin provided a high percentage of entrapped drug (∼84%). Furthermore, in-vivo findings revealed that the anti-inflammatory effect was more prolonged when indometacin was delivered from a liposomal gel formulation rather than from a gel formulation without liposomes. In particular, the indometacin-loaded gel formulation LUV-A showed a sustained effect, probably related to an interaction between LUV lipids and stratum corneum lipid structure. This interaction produces a depot in the stratum corneum that ensures sustained release of the drug to deeper skin layers.
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Affiliation(s)
- Carmelo Puglia
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Catania, Catania, Italy.
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23
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Agnihotri SM, Vavia PR. Pharmacokinetics of intramuscular microparticle depot of valdecoxib in an experimental model. Drug Dev Ind Pharm 2009; 35:1043-7. [PMID: 19365783 DOI: 10.1080/03639040902762979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AIM We did a prospective study to investigate pharmacokinetics of a single intramuscularly (i.m.) administered Valdecoxib (VC) polymeric microparticles in New Zealand white rabbits. METHOD Poly[lac(glc-leu)] microparticles encapsulating a potent cyclooxygenase-2- selective inhibitor, VC, were prepared by emulsion and solvent evaporation technique and administered i.m. to rabbits for pharmacokinetic study. RESULTS A single i.m. dose of drug-loaded poly[lac(glc-leu)] microparticles resulted in sustained therapeutic drug levels in the plasma for 49 days. The relative bioavailability was increased severalfold as compared with unencapsulated drug. CONCLUSIONS Injectable poly[lac(glc-leu)] microparticles hold promise for increasing drug bioavailability and reducing dosing frequency for better management of rheumatoid arthritis.
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Affiliation(s)
- Sagar M Agnihotri
- Pharmaceutical Division, Institute of Chemical Technology, University of Mumbai, Matunga, Mumbai, India.
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Chauhan AS, Jain NK, Diwan PV, Khopade AJ. Solubility Enhancement of Indomethacin with Poly(amidoamine) Dendrimers and Targeting to Inflammatory Regions of Arthritic Rats. J Drug Target 2008; 12:575-83. [PMID: 15621683 DOI: 10.1080/10611860400010655] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
This work includes investigation on solubility enhancement of indomethacin (IND) in the presence of poly(amidoamine) (PAMAM) dendrimers and passive targeting of the PAMAM/IND complex so formed to the inflamed regions in an animal model. The complex formation was confirmed by infrared and (1)H nuclear magnetic resonance spectroscopy methods. Solubility of IND in aqueous G4-PAMAM followed Higuchi's A(N) curve depending on pH of the solubilizing medium. The solubility was decreased upon addition of dendrimer to the IND saturated solution at various pH, indicating aggregation behavior of the PAMAM/IND complex and conforming to the Higuchi's A(N) solubility profile. The in vitro release of IND from the PAMAM/IND complex through a cellophane membrane, from a Franz diffusion cell, showed 79 +/- 3.2% drug release in 24 h. The drug release was further retarded in the presence of human serum albumin (HSA) suggesting the significance of complex HSA binding in altering in vivo behavior of the complex. Intravenous administration of the PAMAM/IND complex formulation in rats showed a two-compartment pharmacokinetic profile. Enhanced effective IND concentrations in the inflamed regions were obtained for the prolonged time period with the PAMAM/IND complex compared to the free drug in arthritic rats indicating preferred accumulation of IND to the inflamed region. The targeting efficiency of PAMAM/IND complex was 2.29 times higher compared to free drug. In contrast to the previous investigations, two interesting findings reported here are: (a) solubility behavior of IND in G4-PAMAM dendrimer deviates from linearity with increasing concentrations of dendrimer at acidic to neutral pH values and (b) inspite of lymphatic drainage, retention of PAMAM/IND complexes occurs at the inflammatory site.
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Affiliation(s)
- Abhay Singh Chauhan
- Pharmacology Division, Indian Institute of Chemical Technology, Hyderabad - 500 007, Andhra Pradesh, India
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Bansal SS, Joshi A, Bansal AK. New Dosage Formulations for Targeted Delivery of Cyclo-Oxygenase-2 Inhibitors. Drugs Aging 2007; 24:441-51. [PMID: 17571910 DOI: 10.2165/00002512-200724060-00001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
NSAIDs are a widely used class of analgesic and anti-inflammatory drugs that act by inhibiting the cyclo-oxygenase (COX) enzyme. However, because of their nonspecificity of action, use of these agents as long-term therapy for chronic pain in diseases such as rheumatoid arthritis (RA) and osteoarthritis (OA) is often discouraged. Among NSAIDs, COX-2 inhibitors are promising candidates for long-term therapy of chronic diseases, particularly in the elderly, because of their reduced incidence of gastrointestinal adverse effects. However, in recent times these agents have also been shown to cause adverse effects such as cardiovascular effects (myocardial infarction, stroke and hypertension) and renal effects (decreased renal blood flow/glomerular filtration rate), which in 2004 led to the withdrawal of rofecoxib and in 2005 the withdrawal of valdecoxib from the US market. Importantly, these adverse effects can be effectively reduced by achieving site specific/targeted delivery through new formulation approaches. These formulations not only restrict the drug supply to specific organs but also reduce the dose required. As a result, use of new delivery systems such as nanoparticles, microparticles, microemulsions and nanogels has gained widespread applicability in the management of chronic disease, especially in the elderly, and particularly when there is a need to decrease dose-dependent adverse effects (as is the case with COX-2 inhibitors). This article reviews various new approaches to the delivery of COX-2 inhibitors and highlights issues related to the development of delivery systems for these agents for RA, OA, cancer (familial adenomatous polyposis, prostate, breast and non-small cell lung cancer), ocular diseases (such as diabetic retinopathy) and inflammatory diseases of the skin, with emphasis on their potential for use in the elderly. Emphasis is also placed on the preparation of these particulate systems, their release profile and behaviour in biological systems.
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Affiliation(s)
- Shyam S Bansal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), SAS Nagar, Punjab, India
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Chandrasekar D, Sistla R, Ahmad FJ, Khar RK, Diwan PV. Folate coupled poly(ethyleneglycol) conjugates of anionic poly(amidoamine) dendrimer for inflammatory tissue specific drug delivery. J Biomed Mater Res A 2007; 82:92-103. [PMID: 17269145 DOI: 10.1002/jbm.a.31122] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Folate receptor is overexpressed on the activated (but not quiescent) macrophages in both animal models and human patients with naturally occurring rheumatoid arthritis. The aim of this study was to prepare folate targeted poly(ethylene glycol) (PEG) conjugates of anionic dendrimer (G3.5 PAMAM) as targeted drug delivery systems to inflammation and to investigate its biodistribution pattern in arthritic rats. Folate-PEG-PAMAM conjugates, with different degrees of substitution were synthesized by a two-step reaction through a carbodiimide-mediated coupling reaction and loaded with indomethacin. Folate-PEG conjugation increased the drug loading efficiency by 10- to 20-fold and the in vitro release profile indicated controlled release of drug. The plasma pharmacokinetic parameters indicated an increased AUC, circulatory half-life and mean residence time for the folate-PEG conjugates. The tissue distribution studies revealed significantly lesser uptake by stomach for the folate-PEG conjugates, thereby limiting gastric-related side effect. The time-averaged relative drug exposure (r(e)) of the drug in paw for the folate-PEG conjugates ranged from 1.81 to 2.37. The overall drug targeting efficiency (T(e)) was highest for folate-PEG conjugate (3.44) when compared to native dendrimer (1.72). The folate-PEG-PAMAM conjugates are the ideal choice for targeted delivery of antiarthritic drugs to inflammation with reduced side-effects and higher targeting efficiency.
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Affiliation(s)
- Durairaj Chandrasekar
- Pharmacology Division, Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500 007, India
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Chandrasekar D, Sistla R, Ahmad FJ, Khar RK, Diwan PV. The development of folate-PAMAM dendrimer conjugates for targeted delivery of anti-arthritic drugs and their pharmacokinetics and biodistribution in arthritic rats. Biomaterials 2007; 28:504-12. [PMID: 16996126 DOI: 10.1016/j.biomaterials.2006.07.046] [Citation(s) in RCA: 121] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2006] [Accepted: 07/31/2006] [Indexed: 11/26/2022]
Abstract
The aim of this study was to synthesize folate-dendrimer conjugates as suitable vehicle for site specific delivery of anti-arthritic drug (indomethacin) to inflammatory regions and to determine its targeting efficiency, biodistribution in adjuvant induced arthritic rats. Folic acid was coupled to the surface amino groups of G4-PAMAM dendrimer (G4D) via a carbodiimide reaction and loaded with indomethacin. The conjugates were characterized by (1)H-NMR and IR spectroscopy. The drug content and percent encapsulation efficiency increased with increasing folate content for the dendrimer conjugates. The in vitro release rate was decreased for the folate conjugates when compared with unconjugated dendrimer (DNI). The plasma concentration profile showed a biphasic curve indicating rapid distribution followed by slow elimination. The AUC(0-infinity), half-life and residence time of indomethacin in inflamed paw was higher for folate-dendrimer conjugates. The time-averaged relative drug exposure (r(e)) of the drug in paw and overall drug targeting efficiency (T(e)) were higher for folate conjugate with 21 folate moieties (4.1 and 2.78, respectively) when compared with DNI (1.91 and 1.88, respectively). This study demonstrated the superiority of active targeting over dendrimer mediated passive targeting and also for the first time, folate-mediated targeting of an anti-arthritic drug to the inflammatory tissues.
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Affiliation(s)
- Durairaj Chandrasekar
- Pharmacology Division, Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500007, India
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28
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Esposito E, Cortesi R, Drechsler M, Paccamiccio L, Mariani P, Contado C, Stellin E, Menegatti E, Bonina F, Puglia C. Cubosome dispersions as delivery systems for percutaneous administration of indomethacin. Pharm Res 2006; 22:2163-73. [PMID: 16267633 DOI: 10.1007/s11095-005-8176-x] [Citation(s) in RCA: 155] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2005] [Accepted: 08/23/2005] [Indexed: 10/25/2022]
Abstract
PURPOSE The present study concerns the production and characterization of monooleine (MO) dispersions as drug delivery systems for indomethacin, taken as model anti-inflammatory drug. METHODS Dispersions were produced by emulsification and homogenization of MO and poloxamer in water. Morphology and dimensional distribution of the disperse phase have been characterized by cryo-transmission electron microscopy and photon correlation spectroscopy, respectively. X-ray diffraction has been performed to determine the structural organization of the disperse phase. Sedimentation field flow fractionation (SdFFF) has been performed to investigate drug distribution in the dispersion. An in vitro diffusion study was conducted by Franz cell associated to stratum corneum epidermis membrane on cubosome dispersions viscosized by carbomer. In vivo studies based on skin reflectance spectrophotometry and tape stripping were performed to better investigate the performance of cubosome as indomethacin delivery system. RESULTS Microscopy studies showed the coexistence of vesicles and cubosomes. X-ray diffraction revealed the presence of a bicontinuous cubic phase of spatial symmetry Im3m (Q229). SdFFF demonstrated that no free drug was present in the dispersion. Indomethacin incorporated in viscosized MO dispersions exhibited a lower flux with respect to the analogous formulation containing the free drug in the aqueous phase and to the control formulation based on carbomer gel. Reflectance spectroscopy demonstrated that indomethacin incorporated into MO dispersions can be released in a prolonged fashion. Tape-stripping experiments corroborated this finding. CONCLUSIONS MO dispersions can be proposed as nanoparticulate systems able to control the percutaneous absorption of indomethacin.
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Affiliation(s)
- Elisabetta Esposito
- Dipartmento di Scienze Farmaceutiche, Universitá di Ferrara, Via Fossato di Mortara, 19, 44100 Ferrara, Italy
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Thakkar H, Sharma RK, Mishra AK, Chuttani K, Murthy RR. Albumin microspheres as carriers for the antiarthritic drug celecoxib. AAPS PharmSciTech 2005; 6:E65-73. [PMID: 16353965 PMCID: PMC2750413 DOI: 10.1208/pt060112] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The present study investigates the preparation of celecoxib-loaded albumin microspheres and the biodistribution of technetium-99m ((99m)Tc)-labeled celecoxib as well as its microspheres after intravenous administration. Microspheres were prepared using a natural polymer BSA using emulsification chemical cross-linking method. The prepared microspheres were characterized for entrapment efficiency, particle size, and in vitro drug release. Surface morphology was studied by scanning electron microscopy. Biodistribution studies were performed by radiolabeling celecoxib (CS) and its microspheres (CMS) using (99m)Tc and injecting arthritic rats intravenously. The geometric mean diameter of the microspheres was found to be 5.46 microm. In vitro release studies indicated that the microspheres sustained the release of the drug for 6 days. Radioactivity measured in different organs after intravenous administration of celecoxib solution showed a significant amount of radioactivity in the liver and spleen. In case of celecoxib-loaded microspheres, a significant amount of radioactivity accumulated in the lungs. No significant difference (P > .1) in the radioactivity was observed between the inflamed joint and the noninflamed joint following intravenous injection of (99m)Tc-CS. However, in case of the microspheres (CMS), the radioactivity present in the inflamed joint was 2.5-fold higher than in the noninflamed joint. The blood kinetic studies revealed that celecoxib-loaded albumin microspheres exhibited prolonged circulation than the celecoxib solution.
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Affiliation(s)
- Hetal Thakkar
- Drug Delivery Laboratory, Centre of Relevance and Excellence in New Drug Delivery system Pharmacy Department, Donor's Plaza, Opposite to University main office, MS University of Baroda, Fatehgunj, 390 002 Vadodara, India
| | - Rakesh Kumar Sharma
- Drug Delivery Laboratory, Centre of Relevance and Excellence in New Drug Delivery system Pharmacy Department, Donor's Plaza, Opposite to University main office, MS University of Baroda, Fatehgunj, 390 002 Vadodara, India
| | - Anil Kumar Mishra
- Division of Radiopharmaceuticals and Radiation Biology, Institute of Nuclear Medicine and Allied Sciences, Brig SK Mazumdar Road, 110 054 Delhi, India
| | - Krishna Chuttani
- Division of Radiopharmaceuticals and Radiation Biology, Institute of Nuclear Medicine and Allied Sciences, Brig SK Mazumdar Road, 110 054 Delhi, India
| | - Rayasa Ramchandra Murthy
- Drug Delivery Laboratory, Centre of Relevance and Excellence in New Drug Delivery system Pharmacy Department, Donor's Plaza, Opposite to University main office, MS University of Baroda, Fatehgunj, 390 002 Vadodara, India
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Chattopadhyay P, Gupta RB. Supercritical CO2Based Production of Magnetically Responsive Micro- and Nanoparticles for Drug Targeting. Ind Eng Chem Res 2002. [DOI: 10.1021/ie020205b] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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