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Yazdani S, Mozaffarian M, Pazuki G, Hadidi N, Villate-Beitia I, Zárate J, Puras G, Pedraz JL. Carbon-Based Nanostructures as Emerging Materials for Gene Delivery Applications. Pharmaceutics 2024; 16:288. [PMID: 38399344 PMCID: PMC10891563 DOI: 10.3390/pharmaceutics16020288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/03/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
Gene therapeutics are promising for treating diseases at the genetic level, with some already validated for clinical use. Recently, nanostructures have emerged for the targeted delivery of genetic material. Nanomaterials, exhibiting advantageous properties such as a high surface-to-volume ratio, biocompatibility, facile functionalization, substantial loading capacity, and tunable physicochemical characteristics, are recognized as non-viral vectors in gene therapy applications. Despite progress, current non-viral vectors exhibit notably low gene delivery efficiency. Progress in nanotechnology is essential to overcome extracellular and intracellular barriers in gene delivery. Specific nanostructures such as carbon nanotubes (CNTs), carbon quantum dots (CQDs), nanodiamonds (NDs), and similar carbon-based structures can accommodate diverse genetic materials such as plasmid DNA (pDNA), messenger RNA (mRNA), small interference RNA (siRNA), micro RNA (miRNA), and antisense oligonucleotides (AONs). To address challenges such as high toxicity and low transfection efficiency, advancements in the features of carbon-based nanostructures (CBNs) are imperative. This overview delves into three types of CBNs employed as vectors in drug/gene delivery systems, encompassing their synthesis methods, properties, and biomedical applications. Ultimately, we present insights into the opportunities and challenges within the captivating realm of gene delivery using CBNs.
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Affiliation(s)
- Sara Yazdani
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran P.O. Box 15875-4413, Iran; (S.Y.); (G.P.)
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
| | - Mehrdad Mozaffarian
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran P.O. Box 15875-4413, Iran; (S.Y.); (G.P.)
| | - Gholamreza Pazuki
- Department of Chemical Engineering, Amirkabir University of Technology, Tehran P.O. Box 15875-4413, Iran; (S.Y.); (G.P.)
| | - Naghmeh Hadidi
- Department of Clinical Research and EM Microscope, Pasteur Institute of Iran (PII), Tehran P.O. Box 131694-3551, Iran;
| | - Ilia Villate-Beitia
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Av Monforte de Lemos 3-5, 28029 Madrid, Spain
- Bioaraba, NanoBioCel Research Group, Calle José Achotegui s/n, 01009 Vitoria-Gasteiz, Spain
| | - Jon Zárate
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Av Monforte de Lemos 3-5, 28029 Madrid, Spain
- Bioaraba, NanoBioCel Research Group, Calle José Achotegui s/n, 01009 Vitoria-Gasteiz, Spain
| | - Gustavo Puras
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Av Monforte de Lemos 3-5, 28029 Madrid, Spain
- Bioaraba, NanoBioCel Research Group, Calle José Achotegui s/n, 01009 Vitoria-Gasteiz, Spain
| | - Jose Luis Pedraz
- NanoBioCel Research Group, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain; (I.V.-B.); (J.Z.); (G.P.)
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Av Monforte de Lemos 3-5, 28029 Madrid, Spain
- Bioaraba, NanoBioCel Research Group, Calle José Achotegui s/n, 01009 Vitoria-Gasteiz, Spain
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Gallego I, Villate-Beitia I, Martínez-Navarrete G, Menéndez M, López-Méndez T, Soto-Sánchez C, Zárate J, Puras G, Fernández E, Pedraz JL. Non-viral vectors based on cationic niosomes and minicircle DNA technology enhance gene delivery efficiency for biomedical applications in retinal disorders. Nanomedicine 2019; 17:308-318. [PMID: 30790710 DOI: 10.1016/j.nano.2018.12.018] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 11/09/2018] [Accepted: 12/18/2018] [Indexed: 01/02/2023]
Abstract
Low transfection efficiency is a major challenge to overcome in non-viral approaches to reach clinical practice. Our aim was to explore new strategies to achieve more efficient non-viral gene therapies for clinical applications and in particular, for retinal diseases. Cationic niosomes and three GFP-encoding genetic materials consisting on minicircle (2.3 kb), its parental plasmid (3.5 kb) and a larger plasmid (5.5 kb) were combined to form nioplexes. Once fully physicochemically characterized, in vitro experiments in ARPE-19 retina epithelial cells showed that transfection efficiency of minicircle nioplexes doubled that of plasmids ones, maintaining good cell viability in all cases. Transfections in retinal primary cells and injections of nioplexes in rat retinas confirmed the higher capacity of cationic niosomes vectoring minicircle to deliver the genetic material into retina cells. Therefore, nioplexes based on cationic niosomes vectoring minicircle DNA represent a potential tool for the treatment of inherited retinal diseases.
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Affiliation(s)
- Idoia Gallego
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Ilia Villate-Beitia
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Gema Martínez-Navarrete
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - Margarita Menéndez
- Rocasolano Physical Chemistry Institute, Superior Council of Scientific Investigations (IQFR-CSIC), Madrid, Spain; Biomedical Research Networking Center in Respiratory Diseases (CIBERES), Spain
| | - Tania López-Méndez
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Cristina Soto-Sánchez
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - Jon Zárate
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Gustavo Puras
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain.
| | - Eduardo Fernández
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - José Luis Pedraz
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain.
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Grijalvo S, Puras G, Zárate J, Sainz-Ramos M, Qtaish NAL, López T, Mashal M, Attia N, Díaz D, Pons R, Fernández E, Pedraz JL, Eritja R. Cationic Niosomes as Non-Viral Vehicles for Nucleic Acids: Challenges and Opportunities in Gene Delivery. Pharmaceutics 2019; 11:E50. [PMID: 30678296 PMCID: PMC6409589 DOI: 10.3390/pharmaceutics11020050] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/16/2019] [Accepted: 01/17/2019] [Indexed: 12/11/2022] Open
Abstract
Cationic niosomes have become important non-viral vehicles for transporting a good number of small drug molecules and macromolecules. Growing interest shown by these colloidal nanoparticles in therapy is determined by their structural similarities to liposomes. Cationic niosomes are usually obtained from the self-assembly of non-ionic surfactant molecules. This process can be governed not only by the nature of such surfactants but also by others factors like the presence of additives, formulation preparation and properties of the encapsulated hydrophobic or hydrophilic molecules. This review is aimed at providing recent information for using cationic niosomes for gene delivery purposes with particular emphasis on improving the transportation of antisense oligonucleotides (ASOs), small interference RNAs (siRNAs), aptamers and plasmids (pDNA).
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Affiliation(s)
- Santiago Grijalvo
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain.
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
| | - Gustavo Puras
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
| | - Jon Zárate
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
| | - Myriam Sainz-Ramos
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
| | - Nuseibah A L Qtaish
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
| | - Tania López
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
| | - Mohamed Mashal
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
| | - Noha Attia
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
| | - David Díaz
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain.
- Institut für Organische Chemie, Universität Regensburg, Universitätsstr. 31, 93053 Regensburg, Germany.
| | - Ramon Pons
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain.
| | - Eduardo Fernández
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
- Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, E-03202 Elche, Spain.
| | - José Luis Pedraz
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
| | - Ramon Eritja
- Institute for Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, E-08034 Barcelona, Spain.
- Networking Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-08034 Barcelona, E-01006 Vitoria-Gasteiz and E-03202 Elche, Spain.
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Villate-Beitia I, Truong NF, Gallego I, Zárate J, Puras G, Pedraz JL, Segura T. Hyaluronic acid hydrogel scaffolds loaded with cationic niosomes for efficient non-viral gene delivery. RSC Adv 2018; 8:31934-31942. [PMID: 30294422 PMCID: PMC6146377 DOI: 10.1039/c8ra05125a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 07/31/2018] [Indexed: 11/29/2022] Open
Abstract
The lack of ideal non-viral gene carriers has motivated the combination of delivery systems and tissue-engineered scaffolds, which may offer relevant advantages such as enhanced stability and reduced toxicity. In this work, we evaluated a new combination between niosome non-viral vectors and hyaluronic acid (HA) hydrogel scaffolds, both widely studied due to their biocompatibility as well as their ability to incorporate a wide variety of molecules. We evaluated three different niosome formulations (niosomes 1, 2 and 3) varying in composition of cationic lipid, helper lipid and non-ionic tensioactives. Niosomes and nioplexes obtained upon the addition of plasmid DNA were characterized in terms of size, polydispersity, zeta potential and ability to transfect mouse bone marrow cloned mesenchymal stem cells (mMSCs) in 2D culture. Niosome 1 was selected for encapsulation in HA hydrogels due to its higher transfection efficiency and the formulation was concentrated in order to be able to incorporate higher amounts of DNA within HA hydrogels. Nioplex-loaded HA hydrogels were characterized in terms of biomechanical properties, particle distribution, nioplex release kinetics and ability to transfect encapsulated mMSCs in 3D culture. Our results showed that nioplex-loaded HA hydrogel scaffolds presented little or no particle aggregation, allowed for extensive cell spreading and were able to efficiently transfect encapsulated mMSCs with high cellular viability. We believe that the knowledge gained through this in vitro model can be utilized to design novel and effective platforms for in vivo local and non-viral gene delivery applications. Nioplexes encapsulated in HA hydrogel scaffolds present no particle aggregation, incorporate high amount of DNA, allow extensive cell spreading and are able to efficiently transfect mesenchymal stem cells in 3D cultures with high cellular viability.![]()
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Affiliation(s)
- Ilia Villate-Beitia
- NanoBioCel Group, School of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain. .,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - Norman F Truong
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, USA.
| | - Idoia Gallego
- NanoBioCel Group, School of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain. .,Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Jon Zárate
- NanoBioCel Group, School of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain. .,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - Gustavo Puras
- NanoBioCel Group, School of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain. .,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - José Luis Pedraz
- NanoBioCel Group, School of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain. .,Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - Tatiana Segura
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, USA. .,Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
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Villate-Beitia I, Gallego I, Martínez-Navarrete G, Zárate J, López-Méndez T, Soto-Sánchez C, Santos-Vizcaíno E, Puras G, Fernández E, Pedraz JL. Polysorbate 20 non-ionic surfactant enhances retinal gene delivery efficiency of cationic niosomes after intravitreal and subretinal administration. Int J Pharm 2018; 550:388-397. [PMID: 30009984 DOI: 10.1016/j.ijpharm.2018.07.035] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/29/2018] [Accepted: 07/11/2018] [Indexed: 01/05/2023]
Abstract
The success of non-viral vectors based on cationic niosomes for retinal gene delivery applications depends on the ability to achieve persistent and high levels of transgene expression, ideally from a single administration. In this work, we studied the effect of the non-ionic surfactant component of niosomes in their transfection efficiency in rat retina. For that purpose, three niosome formulations that only differed in the non-ionic tensioactives were elaborated. Niosomes contained: cationic lipid 1,2-di-O-octadecenyl-3-trimethylammonium propane (DOTMA), helper lipid squalene and polysorbate 20, polysorbate 80 or polysorbate 85. Niosomes and corresponding nioplexes were fully characterized in terms of size, polydispersity index, zeta potential, morphology and ability to protect and release DNA. In vitro experiments were carried out to evaluate transfection efficiency, cell viability and intracellular trafficking pathways of the formulations. Nioplexes based on polysorbate 20 niosomes were the most efficient transfecting retinal cells in vitro. Moreover, subretinal and intravitreal administration of those nioplexes in vivo showed also high levels of transgene expression in rat retinas. Our results demonstrate that the incorporation of polysorbate 20 in cationic niosomes enhances retinal gene delivery. Thus, this formulation emerges as a potential non-viral candidate to efficiently transfer specific therapeutic genes into the eye for biomedical purposes.
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Affiliation(s)
- Ilia Villate-Beitia
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Idoia Gallego
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Gema Martínez-Navarrete
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - Jon Zárate
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Tania López-Méndez
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Cristina Soto-Sánchez
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - Edorta Santos-Vizcaíno
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Gustavo Puras
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain.
| | - Eduardo Fernández
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - José Luis Pedraz
- NanoBioCel Group, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz, Spain; Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain.
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Attia N, Mashal M, Grijalvo S, Eritja R, Zárate J, Puras G, Pedraz JL. Stem cell-based gene delivery mediated by cationic niosomes for bone regeneration. Nanomedicine 2017; 14:521-531. [PMID: 29157978 DOI: 10.1016/j.nano.2017.11.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 10/06/2017] [Accepted: 11/06/2017] [Indexed: 01/07/2023]
Abstract
Bone morphogenetic protein-7(BMP-7) plays a pivotal role in the transformation of mesenchymal stem cells (MSCs) into bone. However, its impact is hampered due to its short half-life. Therefore, gene therapy may be an interesting approach to deliver BMP-7 gene to D1-MSCs. In this manuscript we prepared and characterized niosomes based on cationic lipid 2,3-di(tetradecyloxy)propan-1-amine, combined with polysorbate 80 for gene delivery purposes. Niosomes were characterized and combined initially with pCMS-EGFP reporter plasmid, and later with pUNO1-hBMP-7 plasmid to evaluate osteogenesis differentiation. Additionally, specific blockers of most relevant endocytic pathways were used to evaluate the intracellular disposition of complexes. MSCs transfected with niosomes showed increased growth rate, enhanced alkaline phosphatase activity (ALP) and extracellular matrix deposition which suggested the formation of osteoblast-like cells. We concluded that hBMP-7-transfected MSCs could be considered not only as an effective delivery tool of hBMP-7, but also as proliferating and bone forming cells for bone regeneration.
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Affiliation(s)
- Noha Attia
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, Vitoria-Gasteiz, Spain; Histology and Cell Biology Department, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
| | - Mohamed Mashal
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, Vitoria-Gasteiz, Spain
| | - Santiago Grijalvo
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Ramon Eritja
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Jon Zárate
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, Vitoria-Gasteiz, Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain
| | - Gustavo Puras
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, Vitoria-Gasteiz, Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain.
| | - José Luis Pedraz
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country (UPV/EHU), Paseo de la Universidad 7, Vitoria-Gasteiz, Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Spain.
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Grijalvo S, Alagia A, Puras G, Zárate J, Mayr J, Pedraz JL, Eritja R, Díaz DD. Cationic nioplexes-in-polysaccharide-based hydrogels as versatile biodegradable hybrid materials to deliver nucleic acids. J Mater Chem B 2017; 5:7756-7767. [DOI: 10.1039/c7tb01691c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two polysaccharide-based hydrogels made of only κ-carrageenan (4%; w/v) or of a mixture of methylcellulose:κ-carrageenan (2%; w/v) were used to encapsulate cationic nioplexes.
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Affiliation(s)
- Santiago Grijalvo
- Institute of Organic Chemistry
- University of Rgensburg
- 93040 Regensburg
- Germany
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
| | - Adele Alagia
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
- 08034 Barcelona
- Spain
| | - Gustavo Puras
- Biomedical Research Networking Centre in Bioengineering
- Biomaterials and Nanomedicine (CIBER-BBN)
- 08034 Barcelona
- Spain
- NanoBioCel Group
| | - Jon Zárate
- Biomedical Research Networking Centre in Bioengineering
- Biomaterials and Nanomedicine (CIBER-BBN)
- 08034 Barcelona
- Spain
- NanoBioCel Group
| | - Judith Mayr
- Institute of Organic Chemistry
- University of Rgensburg
- 93040 Regensburg
- Germany
| | - José Luis Pedraz
- Biomedical Research Networking Centre in Bioengineering
- Biomaterials and Nanomedicine (CIBER-BBN)
- 08034 Barcelona
- Spain
- NanoBioCel Group
| | - Ramon Eritja
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
- 08034 Barcelona
- Spain
- Biomedical Research Networking Centre in Bioengineering
- Biomaterials and Nanomedicine (CIBER-BBN)
| | - David Díaz Díaz
- Institute of Organic Chemistry
- University of Rgensburg
- 93040 Regensburg
- Germany
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
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Grijalvo S, Puras G, Zárate J, Pons R, Pedraz JL, Eritja R, Díaz DD. Nioplexes encapsulated in supramolecular hybrid biohydrogels as versatile delivery platforms for nucleic acids. RSC Adv 2016. [DOI: 10.1039/c6ra01005a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Supramolecular hydrogels based on N-protected phenylalanine (Fmoc–Phe–OH) were used to encapsulate non-ionic surfactant vesicles (niosomes).
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Affiliation(s)
- Santiago Grijalvo
- Institute of Organic Chemistry
- University of Regensburg
- D-93040 Regensburg
- Germany
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
| | - Gustavo Puras
- Biomedical Research Networking Center in Bioengineering
- Biomaterials and Nanomedicine (CIBER BBN)
- Spain
- NanoBioCel group
- University of the Basque Country (EHU-UPV)
| | - Jon Zárate
- Biomedical Research Networking Center in Bioengineering
- Biomaterials and Nanomedicine (CIBER BBN)
- Spain
- NanoBioCel group
- University of the Basque Country (EHU-UPV)
| | - Ramon Pons
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
- Spain
| | - Jose Luis Pedraz
- Biomedical Research Networking Center in Bioengineering
- Biomaterials and Nanomedicine (CIBER BBN)
- Spain
- NanoBioCel group
- University of the Basque Country (EHU-UPV)
| | - Ramon Eritja
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
- Spain
- Biomedical Research Networking Center in Bioengineering
- Biomaterials and Nanomedicine (CIBER BBN)
- Spain
| | - David Díaz Díaz
- Institute of Organic Chemistry
- University of Regensburg
- D-93040 Regensburg
- Germany
- Institute of Advanced Chemistry of Catalonia (IQAC-CSIC)
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Puras G, Martínez-Navarrete G, Mashal M, Zárate J, Agirre M, Ojeda E, Grijalvo S, Eritja R, Diaz-Tahoces A, Avilés-Trigueros M, Fernández E, Pedraz JL. Protamine/DNA/Niosome Ternary Nonviral Vectors for Gene Delivery to the Retina: The Role of Protamine. Mol Pharm 2015; 12:3658-71. [PMID: 26334586 DOI: 10.1021/acs.molpharmaceut.5b00422] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The present study aimed to evaluate the incorporation of protamine into niosome/DNA vectors to analyze the potential application of this novel ternary formulation to deliver the pCMS-EGFP plasmid into the rat retina. Binary vectors based on niosome/DNA and ternary vectors based on protamine/DNA/niosomes were prepared and physicochemically characterized. In vitro experiments were performed in ARPE-19 cells. At 1:1:5 protamine/DNA/niosome mass ratio, the resulted ternary vectors had 150 nm size, positive charge, spherical morphology, and condensed, released, and protected the DNA against enzymatic digestion. The presence of protamine in the ternary vectors improved transfection efficiency, cell viability, and DNA condensation. After ocular administration, the EGFP expression was detected in different cell layers of the retina depending on the administration route without any sign of toxicity associated with the formulations. While subretinal administration transfected mainly photoreceptors and retinal pigment epithelial cells at the site of injection, intravitreal administration produced a more uniform distribution of the protein expression through the inner layers of the retina. The protein expression in the retina persisted for at least one month after both administrations. Our study highlights the flattering properties of protamine/DNA/niosome ternary vectors for efficient and safe gene delivery to the rat retina.
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Affiliation(s)
| | - G Martínez-Navarrete
- Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University , 03202 Alicante, Spain
| | | | | | | | | | - S Grijalvo
- Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Spanish Council for Scientific Research , 08034 Barcelona, Spain
| | - R Eritja
- Institute for Advanced Chemistry of Catalonia, IQAC-CSIC, Spanish Council for Scientific Research , 08034 Barcelona, Spain
| | - A Diaz-Tahoces
- Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University , 03202 Alicante, Spain
| | - M Avilés-Trigueros
- Laboratory of Experimental Ophthalmology, Faculty of Medicine, University of Murcia , Regional Campus of International Excellence "Campus Mare Nostrum", E-30100 Murcia, Spain
| | - E Fernández
- Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University , 03202 Alicante, Spain
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Ojeda E, Puras G, Agirre M, Zárate J, Grijalvo S, Pons R, Eritja R, Martinez-Navarrete G, Soto-Sanchez C, Fernández E, Pedraz JL. Niosomes based on synthetic cationic lipids for gene delivery: the influence of polar head-groups on the transfection efficiency in HEK-293, ARPE-19 and MSC-D1 cells. Org Biomol Chem 2014; 13:1068-81. [PMID: 25412820 DOI: 10.1039/c4ob02087a] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We designed niosomes based on three lipids that differed only in the polar-head group to analyze their influence on the transfection efficiency. These lipids were characterized by small-angle X-ray scattering before being incorporated into the niosomes which were characterized in terms of pKa, size, zeta potential, morphology and physical stability. Nioplexes were obtained upon the addition of a plasmid. Different ratios (w/w) were selected to analyze the influence of this parameter on size, charge and the ability to condense, release and protect the DNA. In vitro transfection experiments were performed in HEK-293, ARPE-19 and MSC-D1 cells. Our results show that the chemical composition of the cationic head-group clearly affects the physicochemical parameters of the niosomes and especially the transfection efficiency. Only niosomes based on cationic lipids with a dimethyl amino head group (lipid 3) showed a transfection capacity when compared with their counterparts amino (lipid 1) and tripeptide head-groups (lipid 2). Regarding cell viability, we clearly observed that nioplexes based on the cationic lipid 3 had a more deleterious effect than their counterparts, especially in ARPE-19 cells at 20/1 and 30/1 ratios. Similar studies could be extended to other series of cationic lipids in order to progress in the research on safe and efficient non-viral vectors for gene delivery purposes.
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Affiliation(s)
- E Ojeda
- NanoBioCel Group, University of Basque Country, Vitoria, Spain.
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11
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Puras G, Mashal M, Zárate J, Agirre M, Ojeda E, Grijalvo S, Eritja R, Diaz-Tahoces A, Martínez Navarrete G, Avilés-Trigueros M, Fernández E, Pedraz JL. A novel cationic niosome formulation for gene delivery to the retina. J Control Release 2013; 174:27-36. [PMID: 24231407 DOI: 10.1016/j.jconrel.2013.11.004] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 10/28/2013] [Accepted: 11/04/2013] [Indexed: 11/25/2022]
Abstract
Niosomes represent a recent promising approach for gene delivery purposes. We elaborated on a novel niosome formulation based on the 2,3-di(tetradecyloxy)propan-1-amine cationic lipid, combined with squalene and polysorbate 80 to evaluate the transfection efficiency in rat retinas. Niosomes prepared by the solvent emulsification-evaporation technique were mixed with the pCMSEGFP plasmid to form lipoplexes which were characterized in terms of morphology, size, surface charge, and DNA condensation, protection and release. In vitro studies were conducted to evaluate transfection efficiency, viability and internalization mechanism in HEK-293 and ARPE-19 cells. The efficacy of the most promising formulation was evaluated in rat eyes by monitoring the expression of the EGFP after intravitreal and subretinal injections. Lipoplexes at 15/1 ratio were 200nm in size, 25mV in zeta potential and exhibited spherical morphology. At this ratio, niosomes condensed and protected the DNA from enzymatic digestion. Lipoplexes successfully transfected HEK-293 and specially ARPE-19 cells, without affecting the viability. Whereas lipoplexes entered mainly retinal cells by clathrin-mediated endocytosis, HEK-293 cells showed a higher caveolae-dependent entry. After ocular administration, the expression of EGFP was detected in different cells of the retina depending on the administration route. This novel niosome formulation represents a promising approach to deliver genetic material into the retina to treat inherited retinal diseases.
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Affiliation(s)
- G Puras
- NanoBioCel Group, University of the Basque Country, Vitoria-Gasteiz, Spain; Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain
| | - M Mashal
- NanoBioCel Group, University of the Basque Country, Vitoria-Gasteiz, Spain
| | - J Zárate
- NanoBioCel Group, University of the Basque Country, Vitoria-Gasteiz, Spain; Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain
| | - M Agirre
- NanoBioCel Group, University of the Basque Country, Vitoria-Gasteiz, Spain; Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain
| | - E Ojeda
- NanoBioCel Group, University of the Basque Country, Vitoria-Gasteiz, Spain; Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain
| | - S Grijalvo
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain; Institute of Advanced Chemistry of Catalonia, IQAC-CSIC, Barcelona, Spain
| | - R Eritja
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain; Institute of Advanced Chemistry of Catalonia, IQAC-CSIC, Barcelona, Spain
| | - A Diaz-Tahoces
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - G Martínez Navarrete
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - M Avilés-Trigueros
- Laboratory of Experimental Ophthalmology, Faculty of Medicine, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum", Murcia, Spain
| | - E Fernández
- Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain; Neuroprothesis and Neuroengineering Research Group, Miguel Hernández University, Elche, Spain
| | - J L Pedraz
- NanoBioCel Group, University of the Basque Country, Vitoria-Gasteiz, Spain; Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Zaragoza Spain.
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12
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Zárate J, Goicoechea E, Pascual J, Echevarría E, Guillén MD. A study of the toxic effect of oxidized sunflower oil containing 4-hydroperoxy-2-nonenal and 4-hydroxy-2-nonenal on cortical TrkA receptor expression in rats. Nutr Neurosci 2013; 12:249-59. [DOI: 10.1179/147683009x423391] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Gutiérrez E, Churruca I, Zárate J, Carrera O, Portillo MP, Cerrato M, Vázquez R, Echevarría E. High ambient temperature reverses hypothalamic MC4 receptor overexpression in an animal model of anorexia nervosa. Psychoneuroendocrinology 2009; 34:420-9. [PMID: 19022583 DOI: 10.1016/j.psyneuen.2008.10.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Revised: 09/29/2008] [Accepted: 10/08/2008] [Indexed: 02/07/2023]
Abstract
The potential involvement of the melanocortin system in the beneficial effects of heat application in rats submitted to activity-based anorexia (ABA), an analogous model of anorexia nervosa (AN), was studied. Once ABA rats had lost 20% of body weight, half of the animals were exposed to a high ambient temperature (HAT) of 32 degrees C, whereas the rest were maintained at 21 degrees C. Control sedentary rats yoked to ABA animals received the same treatment. ABA rats (21 degrees C) showed increased Melanocortin 4 (MC4) receptor and Agouti gene Related Peptide (AgRP) expression, and decreased pro-opiomelanocortin (POMC) mRNA levels (Real Time PCR), with respect to controls. Heat application increased weight gain and food intake, and reduced running rate in ABA rats, when compared with ABA rats at 21 degrees C. However, no changes in body weight and food intake were observed in sedentary rats exposed to heat. Moreover, heat application reduced MC4 receptor, AgRP and POMC expression in ABA rats, but no changes were observed in control rats. These results indicate that hypothalamic MC4 receptor overexpression could occur on the basis of the characteristic hyperactivity, weight loss, and self-starvation of ABA rats, and suggest the involvement of hypothalamic melanocortin neural circuits in behavioural changes shown by AN patients. Changes in AgRP and POMC expression could represent an adaptative response to equilibrate energy balance. Moreover, the fact that HAT reversed hypothalamic MC4 receptor overexpression in ABA rats indicates the involvement of brain melanocortin system in the reported beneficial effects of heat application in AN. A combination of MC4 receptor antagonists and heat application could improve the clinical management of AN.
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Affiliation(s)
- E Gutiérrez
- Departments of Clinical Psychology and Psychobiology, University of Santiago de Compostela, Spain
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Zárate J, Juárez H, Contreras M, Pérez R. Experimental design and results from the preparation of precursory powders of ZrO2(3%Y2O3)/(10–95)% Al2O3 composite. POWDER TECHNOL 2005. [DOI: 10.1016/j.powtec.2005.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lucientes J, Palmero J, Guarga JL, Gracia MJ, Peribáñez MA, Zárate J, Castillo JA. Risk of transmission of canine leishmaniosis in eastern Spain. Vet Rec 2005; 156:743-4. [PMID: 15937242 DOI: 10.1136/vr.156.23.743] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- J Lucientes
- Departamento de Patología Animal, Facultad de Veterinaria, C/Miguel Servet 177, 50013 Zaragoza, Spain
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Baptista T, Zárate J, Joober R, Colasante C, Beaulieu S, Páez X, Hernández L. Drug induced weight gain, an impediment to successful pharmacotherapy: focus on antipsychotics. Curr Drug Targets 2004; 5:279-99. [PMID: 15058313 DOI: 10.2174/1389450043490514] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The antipsychotic drugs (APDs) are fundamental tools in current psychiatric practice. A new generation of agents, the atypical APDs, represents an important progress in the treatment of psychotic disorders. Unfortunately, some of them induce excessive body weight gain (BWG), obesity, hyperglycemia and dyslipidemia in the following order: clozapine approximately equal to olanzapine > quetiapine > risperidone > ziprasidone = aripiprazole. Appetite stimulation is probably the main mechanism of BWG and this is strongly correlated with the APD affinity for H1 (histaminergic) and alpha1 (adrenergic) receptors. A composed ratio of the APD affinity for diverse neurotransmitters involved in food intake (FI) regulation correlates with BWG as well. Endocrine/metabolic mechanisms, such as the activation of the hypothalamus-pituitary-adrenal axis, changes in insulin sensitivity (by conventional and atypical agents), hyperprolactinemia and gonadal dysfunction (by conventional APDs and risperidone) may also be involved. Importantly, patients with schizophrenia may have a genetically-based predisposition to appetite dysregulation, insulin resistance and endocrine imbalance involving gonadal steroids. Excessive BWG must be prevented or attenuated by proper drug selection, combining or switching agents, nutritional assistance and physical exercise. Amantadine. metformin and reboxetine proved to significantly lessen APD-induced BWG. Notwithstanding this, novel strategies are necessary to treat this side effect in a clinical population particularly prone to poor compliance and under a high risk of negative drug interaction.
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Affiliation(s)
- T Baptista
- Department of Physiology, P.O. Box 93, Los Andes University Medical School, Mérida, 5101-A, Venezuela.
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Abstract
Toluene is a neurotoxic organic solvent widely used in industry. Acute toluene administration in rats induced a significant increase in the numbers of neural cells immunostained for p75NTR in several brainstem regions, such as the raphe magnus and the nucleus of the solitary tract, as well as in the lateral reticular, gigantocellular, vestibular and ventral cochlear nuclei, without any in the facial and spinal trigeminal nuclei and the dorsal horn of the spinal cord. These data suggest that p75NTR could be involved in toluene-induced neurotoxic efffects in the rat brainstem.
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Affiliation(s)
- Jesús Pascual
- Department of Physiology, School of Pharmacy, University of the Basque Country, Paseo de la Universidad 7, 01006 Vitoria, Spain
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Gracia MJ, Lucientes J, Castillo JA, Peribáñez MA, Latorre E, Zárate J, Arbea I. Pulex irritans infestation in dogs. Vet Rec 2000; 147:748-9. [PMID: 11195171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- M J Gracia
- Departamento de Patología Animal, Facultad de Veterinaria, Zaragoza, Spain
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Abstract
PURPOSE Leiomyoma is a benign tumor derived from smooth muscle, most frequently occurring in the uterus and gastrointestinal system. This report discusses clinical and pathologic findings in a 56-year-old man with orbital leiomyoma. METHODS Case review. RESULTS A lateral orbitotomy was performed. Immunohistochemical staining for actin and desmin was positive result. There was no evidence of recurrence during a two-year follow-up interval. CONCLUSIONS Leiomyoma is a benign tumor of low incidence because there is little smooth muscle in the orbit. The differential diagnosis must include any fully encapsulated orbital tumor. Prognosis after surgical excision is favorable.
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Affiliation(s)
- D Badoza
- Ophthalmology Department, Hospital de Clinicas José de San Martín, School of Medicine, University of Buenos Aires, Argentina
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Pest P, Zárate J, Varsky C, Man F, Schraier M. Helicobacter pylori in recently-diagnosed versus chronic duodenal ulcer. Acta Gastroenterol Latinoam 1997; 26:273-6. [PMID: 9363263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Helicobacter pylori is one of the main causes of type B gastritis and is frequently found in the gastric antrum or in areas of gastric metaplasia in duodenal ulcer patients. The aim of this study was to evaluate Helicobacter pylori and gastric metaplasia prevalence in duodenal ulcer patients within their first diagnosed episode compared to those with chronic ulcer disease. Eighty three patients were prospectively studied in a 2-year period, they were divided into 3 groups: Group I, control, included 29 patients; Group II, 17 patients, included patients with first diagnosed duodenal ulcer episode; and Group III, 37 patients, with chronic ulcer disease. Helicobacter pylori prevalence in duodenum was significatively lower in Group II versus Group III and controls (67.5%, 0% and 3.2% respectively) (p < 0.001). In the antrum Hp prevalence was also lower in Group II compared to Group III and I (41%, 78.3% and 24.1%) with a significative difference (p < 0.001). Gastric metaplasia was significantly higher in Group III versus Group II and controls. These results suggest that Helicobacter pylori plays an important but not exclusive role in the pathogenesis of these disease together with other factors.
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Affiliation(s)
- P Pest
- Servicio de Gastroenterología, Hospital Nacional Posadas, Haedo, Pcia. de Bs. As., Argentina
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Abstract
BACKGROUND The compositional nature of the pigment of melanosis coli is essentially unknown. Previous histochemical studies suggested that this pigment has certain similarities with lipofuscin (i.e., age-dependent pigment) and ceroids (i.e., pathologically derived pigments) and that it may contain, therefore, polymerized glycolipids and glycoproteins. However, the saccharide composition of this pigment was never explored by lectin histochemical procedures, which was the main object of this study. METHODS Colonoscopic biopsy specimens from eight patients with melanosis coli and from three normal control subjects were studied by fluorescent microscopy and by standard and lectin histochemistry. The number of apoptoses in the lining colonic epithelium was also evaluated histologically. RESULTS Apoptotic bodies were significantly more numerous in patients with melanosis coil than in control subjects. The pigment that accumulates in macrophages of the lamina propia showed autofluorescence, sudanophilia, acid-fastness, and positiveness to PAS and Schmorl's reactions, all of which are common to lipofuscin and ceroids, plus an intense argentaffin reaction abolished by bleaching, indicative of a melanic substance. Lectin histochemistry showed, in decreasing order of frequency, the presence of alpha-D-mannose, sialic acid, beta-D-galactose (lactose), gal-beta-(1-3)acetyl-galactosamine, alpha-D-galactose, and alpha-L-fucose, but no terminal alpha-D-acetyl-galactosaminyl residues. CONCLUSIONS The significant increase of apoptotic bodies in the lining colonic epithelium indicated that this type of cell death is not due to the natural programmed cell renewal, but to the action of laxatives. Because the autofluorescent pigment of melanosis coli contains melanin (as well as glycoconjugates) and is not dependent on age but on the use of anthranoid laxatives, it should be categorized as a "melanized ceroid." The lectin affinities of this pigment indicated that it contains a substantial number of saccharide residues almost similar to those found in the ceroid pigment of human aortic atheromas. These findings and considerations on the metabolism and pharmacokinetics of anthranoids suggested that the apoptotic epithelial cells, rather than the laxatives, may be the source of the pigment saccharides, whereas the precursors of the melanic substance may be derived from the anthranoids.
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Affiliation(s)
- S H Benavides
- Department of Pathology, School of Medicine, University of Buenos Aires, Argentina
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Argento C, Zárate J. Study of the lens epithelial cell density in cataractous eyes operated on with extracapsular and intercapsular techniques. J Cataract Refract Surg 1990; 16:207-10. [PMID: 2329479 DOI: 10.1016/s0886-3350(13)80732-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Epithelial cell counting was performed in 47 fragments from lens anterior capsules obtained during extracapsular and intercapsular surgery. Mean cell count was 3,277 cell/mm2; there was no correlation between cell number and age and no significant difference in cell counts between extracapsular and intercapsular surgery. There were, however, significant differences between advanced cataracts and the other cataract types (2,947 vs. 3,356). This may be important in explaining the differences in regenerative opacification of the posterior capsule in the different types of cataracts.
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Affiliation(s)
- C Argento
- Instituto de la Visión, University of Buenos Aires, Argentina
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