1
|
Teixeira MI, Lopes CM, Gonçalves H, Catita J, Silva AM, Rodrigues F, Amaral MH, Costa PC. Formulation, Characterization, and Cytotoxicity Evaluation of Lactoferrin Functionalized Lipid Nanoparticles for Riluzole Delivery to the Brain. Pharmaceutics 2022; 14:185. [PMID: 35057079 PMCID: PMC8778224 DOI: 10.3390/pharmaceutics14010185] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [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: 12/14/2021] [Revised: 01/03/2022] [Accepted: 01/07/2022] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease with a very poor prognosis. Its treatment is hindered by a lack of new therapeutic alternatives and the existence of the blood-brain barrier (BBB), which restricts the access of drugs commonly used in ALS, such as riluzole, to the brain. To overcome these limitations and increase brain targeting, riluzole-loaded nanostructured lipid carriers (NLC) were prepared and functionalized with lactoferrin (Lf), facilitating transport across the BBB by interacting with Lf receptors expressed in the brain endothelium. NLC were characterized with respect to their physicochemical properties (size, zeta potential, polydispersity index) as well as their stability, encapsulation efficiency, morphology, in vitro release profile, and biocompatibility. Moreover, crystallinity and melting behavior were assessed by DSC and PXRD. Nanoparticles exhibited initial mean diameters between 180 and 220 nm and a polydispersity index below 0.3, indicating a narrow size distribution. NLC remained stable over at least 3 months. Riluzole encapsulation efficiency was very high, around 94-98%. FTIR and protein quantification studies confirmed the conjugation of Lf on the surface of the nanocarriers, with TEM images showing that the functionalized NLC presented a smooth surface and uniform spherical shape. An MTT assay revealed that the nanocarriers developed in this study did not cause a substantial reduction in the viability of NSC-34 and hCMEC/D3 cells at a riluzole concentration up to 10 μM, being therefore biocompatible. The results suggest that Lf-functionalized NLC are a suitable and promising delivery system to target riluzole to the brain.
Collapse
Affiliation(s)
- Maria Inês Teixeira
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.H.A.); (P.C.C.)
- UCIBIO—Applied Molecular Biosciences Unit, MedTech—Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Carla Martins Lopes
- FP-I3ID, FP-ENAS/CEBIMED, Fernando Pessoa Energy, Environment, and Health Research Unit/Biomedical Research Center, Portugal and Faculty of Health Sciences, Fernando Pessoa University, 4200-150 Porto, Portugal;
| | | | - José Catita
- FP-I3ID, FP-ENAS/CEBIMED, Fernando Pessoa Energy, Environment, and Health Research Unit/Biomedical Research Center, Portugal and Faculty of Health Sciences, Fernando Pessoa University, 4200-150 Porto, Portugal;
- Paralab, AS, 4420-437 Gondomar, Portugal;
| | - Ana Margarida Silva
- REQUIMTE/LAQV—Polytechnic of Porto, School of Engineering, Rua Dr. António Bernardino de Almeida, 4229-015 Porto, Portugal; (A.M.S.); (F.R.)
| | - Francisca Rodrigues
- REQUIMTE/LAQV—Polytechnic of Porto, School of Engineering, Rua Dr. António Bernardino de Almeida, 4229-015 Porto, Portugal; (A.M.S.); (F.R.)
| | - Maria Helena Amaral
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.H.A.); (P.C.C.)
- UCIBIO—Applied Molecular Biosciences Unit, MedTech—Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Paulo C. Costa
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.H.A.); (P.C.C.)
- UCIBIO—Applied Molecular Biosciences Unit, MedTech—Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| |
Collapse
|
2
|
Teixeira MI, Amaral MH, Costa PC, Lopes CM, Lamprou DA. Recent Developments in Microfluidic Technologies for Central Nervous System Targeted Studies. Pharmaceutics 2020; 12:E542. [PMID: 32545276 PMCID: PMC7356280 DOI: 10.3390/pharmaceutics12060542] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/09/2020] [Indexed: 12/24/2022] Open
Abstract
Neurodegenerative diseases (NDs) bear a lot of weight in public health. By studying the properties of the blood-brain barrier (BBB) and its fundamental interactions with the central nervous system (CNS), it is possible to improve the understanding of the pathological mechanisms behind these disorders and create new and better strategies to improve bioavailability and therapeutic efficiency, such as nanocarriers. Microfluidics is an intersectional field with many applications. Microfluidic systems can be an invaluable tool to accurately simulate the BBB microenvironment, as well as develop, in a reproducible manner, drug delivery systems with well-defined physicochemical characteristics. This review provides an overview of the most recent advances on microfluidic devices for CNS-targeted studies. Firstly, the importance of the BBB will be addressed, and different experimental BBB models will be briefly discussed. Subsequently, microfluidic-integrated BBB models (BBB/brain-on-a-chip) are introduced and the state of the art reviewed, with special emphasis on their use to study NDs. Additionally, the microfluidic preparation of nanocarriers and other compounds for CNS delivery has been covered. The last section focuses on current challenges and future perspectives of microfluidic experimentation.
Collapse
Affiliation(s)
- Maria Inês Teixeira
- UCIBIO-REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.I.T.); (M.H.A.); (P.C.C.)
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Maria Helena Amaral
- UCIBIO-REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.I.T.); (M.H.A.); (P.C.C.)
| | - Paulo C. Costa
- UCIBIO-REQUIMTE, MedTech - Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; (M.I.T.); (M.H.A.); (P.C.C.)
| | - Carla M. Lopes
- FP-ENAS/CEBIMED, Fernando Pessoa Energy, Environment and Health Research Unit/Biomedical Research Centre, Faculty of Health Sciences, Fernando Pessoa University, Rua Carlos da Maia, 296, 4200-150 Porto, Portugal
| | - Dimitrios A. Lamprou
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| |
Collapse
|
3
|
Teixeira MI, Lopes CM, Amaral MH, Costa PC. Current insights on lipid nanocarrier-assisted drug delivery in the treatment of neurodegenerative diseases. Eur J Pharm Biopharm 2020; 149:192-217. [PMID: 31982574 DOI: 10.1016/j.ejpb.2020.01.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [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: 08/08/2019] [Revised: 10/16/2019] [Accepted: 01/08/2020] [Indexed: 12/12/2022]
Abstract
The central nervous system (CNS) is vulnerable to pathologic processes that lead to the development of neurodegenerative disorders like Alzheimer's, Parkinson's and Huntington's diseases, Multiple sclerosis or Amyotrophic lateral sclerosis. These are chronic and progressive pathologies characterized by the loss of neurons and the formation of misfolded proteins. Additionally, neurodegenerative diseases are accompanied by a structural and functional dysfunction of the blood-brain barrier (BBB). Although serving as a protection for the CNS, the existence of physiological barriers, especially the BBB, limits the access of several therapeutic agents to the brain, constituting a major hindrance in neurotherapeutics advancement. In this regard, nanotechnology-based approaches have arisen as a promising strategy to not only improve drug targeting to the brain, but also to increase bioavailability. Lipid nanocarriers such as liposomes, solid lipid nanoparticles (SLN), nanostructured lipid carriers (NLC), microemulsions and nanoemulsions, have already proven their potential for enhancing brain transport, crossing more easily into the CNS and allowing the administration of medicines that could benefit the treatment of neurological pathologies. Given the socioeconomic impact of such conditions and the advent of nanotechnology that inevitably leads to more effective and superior therapeutics for their management, it is imperative to constantly update on the current knowledge of these topics. Herein, we provide insight on the BBB and the pathophysiology of the main neurodegenerative disorders. Moreover, this review seeks to highlight the several approaches that can be used to improve the delivery of therapeutic agents to the CNS, while also offering an extensive overview of the latest efforts regarding the use of lipid-based nanocarriers in the management of neurodegenerative diseases.
Collapse
Affiliation(s)
- M I Teixeira
- UCIBIO, REQUIMTE, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge de Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - C M Lopes
- FP-ENAS/CEBIMED, Fernando Pessoa Energy, Environment and Health Research Unit/Biomedical Research Centre, Faculty of Health Sciences, Fernando Pessoa University, Rua Carlos da Maia, 296, 4200-150 Porto, Portugal
| | - M H Amaral
- UCIBIO, REQUIMTE, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge de Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - P C Costa
- UCIBIO, REQUIMTE, MEDTECH, Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge de Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| |
Collapse
|
4
|
Delama A, Teixeira MI, Dorati R, Genta I, Conti B, Lamprou DA. Microfluidic encapsulation method to produce stable liposomes containing iohexol. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101340] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
5
|
|
6
|
Abstract
The dosimeter characteristics of jade samples were studied for application in high-dose dosimetry. Jade is the common denomination of two silicates: jadeite and actinolite. The EPR spectra of different jade samples were obtained after irradiation with absorbed doses of 100 Gy up to 20 kGy. The jade samples present signals that increase with the absorbed dose (g-factors around 2.00); they can be attributed to electron centers. The EPR spectra obtained for the USA jade samples and their main dosimetric properties as reproducibility, calibration curves and energy dependence were investigated.
Collapse
Affiliation(s)
- Maria Inês Teixeira
- Instituto de Pesquisas Energéticas e Nucleares/Comissão Nacional de Energia Nuclear, São Paulo, Brazil.
| | | | | | | |
Collapse
|
7
|
|
8
|
Caldas LVE, Teixeira MI, Ferraz GM. Influence of thermal treatments on the response of sand radiation detectors for high-dose dosimetry. Radiat Prot Dosimetry 2006; 120:230-4. [PMID: 16766572 DOI: 10.1093/rpd/nci660] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The dosimetric properties of sand from Brazilian beaches have shown to be useful for high-dose dosimetry. The thermoluminescent (TL) and electron paramagnetic resonance (EPR) techniques were utilised, and the sand samples were recently studied in relation to their main dosimetric properties. The EPR signal at g = 1.999 grows significantly in function of the absorbed dose, and the TL peaks appear at 110 and 170 degrees C. However, these sand samples present a post-irradiation thermal decay at room temperature, which is a problem for dosimetric procedures. In this study, sand samples have been studied in relation to different thermal treatments. Post-irradiation treatments were performed at 50 degrees C up to 230 degrees C.
Collapse
Affiliation(s)
- Linda V E Caldas
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, CP 11049, São Paulo, SP 05422-970, Brazil.
| | | | | |
Collapse
|
9
|
Abstract
Commercial transparent and colored (bronze, brown, and green) glasses were studied as possible dosimeters for high gamma doses using electronic paramagnetic resonance (EPR). All EPR spectra showed the characteristic Fe3+ signals, g=4.27 and 2.01. The signal at g=2.01 presented a more useable behavior for the calibration curve. All samples showed their usefulness as high dose dosimeters.
Collapse
Affiliation(s)
- Maria Inês Teixeira
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, Rua Prof. Lineu Prestes, 2242 05508-900, São Paulo, Brazil.
| | | | | |
Collapse
|
10
|
Abstract
The electronic paramagnetic resonance (EPR) technique was utilized to study sand samples from different Brazilian beaches for high-dose dosimetry. Sand also contains concentrations of heavy minerals. Sand samples were studied in relation to their main dosimetric properties: response reproducibility, reutilization, batch uniformity, detection range and dose response. The EPR signal grows significantly as a function of absorbed dose for g=1.999. All studied sand samples can be used as EPR dosimeters for different applications in medical, agricultural and industrial areas.
Collapse
Affiliation(s)
- Maria Inês Teixeira
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, Rua Prof. Lineu Prestes, 2242, 05508-900, São Paulo, Brazil.
| | | | | |
Collapse
|
11
|
Teixeira MI, Andrade LR, Farina M, Rocha-Leão MHM. Characterization of short chain fatty acid microcapsules produced by spray drying. Materials Science and Engineering: C 2004. [DOI: 10.1016/j.msec.2004.08.008] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Abstract
Coloured glasses produced commercially by Cebracê, São Paulo, were analysed by the thermoluminescent (TL) method, to verify the possibility of their use as high-dose dosemeters or irradiation indicators in industrial areas, due to their easy handling and their low cost. The samples were exposed to different radiation doses, using the Gamma-Cell 220 system (60Co) of IPEN. The TL emission curves presented main peaks at 135, 150 and 145 degrees C in the bronze, brown and green glass samples, respectively. Calibration curves were obtained for the glasses between 50 Gy and 360 kGy. Reproducibility of TL response and the lower detection doses were determined for each kind of glass. All tested glasses showed their usefulness as irradiation indicators and as high-dose dosemeters.
Collapse
Affiliation(s)
- Linda V E Caldas
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, C.P. 11049, 05422-970, São Paulo, SP, Brazil.
| | | |
Collapse
|
13
|
Abstract
Brazilian commercial glasses of various colors (bronze, brown and green) have been studied to evaluate their potential as radiation-sensitive materials in gamma high-dose dosimetry. Characteristics of their optical absorption responses (reproducibility, room temperature stability, and calibration curves) have been obtained using a spectrophotometer and a simple densitometer specially designed for glass samples. The glass spectra feature a decay at room temperature that has to be taken into consideration. The results show that the colored glasses can be used in dosimetry; the upper limit of the dose range depends on the glass type.
Collapse
Affiliation(s)
- Maria Inês Teixeira
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, Universidade São Judas Tadeu, São Paulo, Brazil.
| | | |
Collapse
|
14
|
Abstract
Glass samples were tested for use in high-dose dosimetry in radiation processing. The main dosimetric characteristics were determined: lower detection threshold, reproducibility, response to gamma radiation of 60Co and thermal decay at room temperature, with the use of a densitometer, spectrophotometer and thermoluminescence reader. The results show that this kind of material could be useful for dosimetry in several applications of ionising radiation, taking into account its thermal fading.
Collapse
Affiliation(s)
- L V E Caldas
- Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, São Paulo, SP, Brazil.
| | | |
Collapse
|
15
|
Leite JB, Gentil FDC, Burchenal J, Marques A, Teixeira MI, Abrão FS. [Acute renal failure after the use of cis-diamminedichloroplatinum, gentamycin and cephalosporins]. Rev Paul Med 1981; 97:75-7. [PMID: 7199754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
16
|
Leite JB, Marques A, Gentil FC, Abrão FS, Teixeira MI, Gomes OM. [Tumor transplant technic: experimental study in rats]. Rev Paul Med 1980; 96:89-91. [PMID: 7221375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
17
|
Leite JB, Marques AF, Teixeira MI, Ueda M, Weigl DR, Bianchi A, De Andréa ML, Lopes A, Gomes OM. [Electron microscopy diagnosis of herpes zoster virus in cancer patients]. Rev Paul Med 1979; 93:101-3. [PMID: 229536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|