1
|
Janjic JM, McCallin R, Liu L, Crelli C, Das AC, Troidle A. In vitro Quality Assessments of Perfluorocarbon Nanoemulsions for Near-infrared Fluorescence Imaging of Inflammation in Preclinical Models. Bio Protoc 2023; 13:e4842. [PMID: 37817906 PMCID: PMC10560689 DOI: 10.21769/bioprotoc.4842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 10/12/2023] Open
Abstract
Tracking macrophages by non-invasive molecular imaging can provide useful insights into the immunobiology of inflammatory disorders in preclinical disease models. Perfluorocarbon nanoemulsions (PFC-NEs) have been well documented in their ability to be taken up by macrophages through phagocytosis and serve as 19F magnetic resonance imaging (MRI) tracers of inflammation in vivo and ex vivo. Incorporation of near-infrared fluorescent (NIRF) dyes in PFC-NEs can help monitor the spatiotemporal distribution of macrophages in vivo during inflammatory processes, using NIRF imaging as a complementary methodology to MRI. Here, we discuss in depth how both colloidal and fluorescence stabilities of the PFC-NEs are essential for successful and reliable macrophage tracking in vivo and for their detection in excised tissues ex vivo by NIRF imaging. Furthermore, PFC-NE quality assures NIRF imaging reproducibility and reliability across preclinical studies, providing insights into inflammation progression and therapeutic response. Previous studies focused on assessments of colloidal property changes in response to stress and during storage as a means of quality control. We recently focused on the joint evaluation of both colloidal and fluorescence properties and their relationship to NIRF imaging outcomes. In this protocol, we summarize the key assessments of the fluorescent dye-labeled nanoemulsions, which include long-term particle size distribution monitoring as the measure of colloidal stability and monitoring of the fluorescence signal. Due to its simplicity and reproducibility, our protocols are easy to adopt for researchers to assess the quality of PFC-NEs for in vivo NIRF imaging applications.
Collapse
Affiliation(s)
- Jelena M. Janjic
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA, USA
| | - Rebecca McCallin
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA, USA
| | - Lu Liu
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA, USA
| | - Caitlin Crelli
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA, USA
| | - Amit Chandra Das
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA, USA
| | - Anneliese Troidle
- School of Science and Engineering, Department of Biomedical Engineering, Duquesne University, Pittsburgh, PA, USA
| |
Collapse
|
2
|
Chen J, Yao Y. Phytoglycogen to Enhance the Solubility and in-vitro Permeation of Resveratrol. FOOD BIOPHYS 2023; 18:1-10. [PMID: 37362010 PMCID: PMC10063939 DOI: 10.1007/s11483-023-09785-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 03/20/2023] [Indexed: 04/05/2023]
Abstract
This study investigated the capability of phytoglycogen (PG) to improve the water-soluble amount and bioavailability of resveratrol (RES). RES and PG were incorporated through co-solvent mixing and spray-drying to form PG-RES solid dispersions. The soluble amount of RES of PG-RES solid dispersions reached 289.6 μg/mL at PG:RES ratio of 50:1, compared with 45.6 μg/mL for RES alone. X-ray powder diffraction and Fourier-transform infrared spectroscopy tests suggested a significant reduction of RES crystallinity in PG-RES solid dispersions and the formation of hydrogen bonds between RES and PG. Caco-2 monolayer permeation tests showed that, at low RES loading concentrations (15 and 30 μg/mL), PG-RES solid dispersions achieved greater permeation of RES (0.60 and 1.32 μg/well, respectively) than RES alone (0.32 and 0.90 μg/well, respectively). At an RES loading of 150 μg/mL, PG-RES solid dispersion realized RES permeation of 5.89 μg/well, suggesting the potential of PG in enhancing the bioavailability of RES.
Collapse
Affiliation(s)
- Jingfan Chen
- Department of Food Science, Purdue University, 745 Agriculture Mall Drive, West Lafayette, IN 47907 United States
| | - Yuan Yao
- Department of Food Science, Purdue University, 745 Agriculture Mall Drive, West Lafayette, IN 47907 United States
| |
Collapse
|
3
|
Balogh M, Janjic JM, Shepherd AJ. Targeting Neuroimmune Interactions in Diabetic Neuropathy with Nanomedicine. Antioxid Redox Signal 2022; 36:122-143. [PMID: 34416821 PMCID: PMC8823248 DOI: 10.1089/ars.2021.0123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Significance: Diabetes is a major source of neuropathy and neuropathic pain that is set to continue growing in prevalence. Diabetic peripheral neuropathy (DPN) and pain associated with diabetes are not adequately managed by current treatment regimens. Perhaps the greatest difficulty in treating DPN is the complex pathophysiology, which involves aspects of metabolic disruption and neurotrophic deficits, along with neuroimmune interactions. There is, therefore, an urgent need to pursue novel therapeutic options targeting the key cellular and molecular players. Recent Advances: To that end, cellular targeting becomes an increasingly compelling drug delivery option as our knowledge of neuroimmune interactions continues to mount. These nanomedicine-based approaches afford a potentially unparalleled specificity and longevity of drug targeting, using novel or established compounds, all while minimizing off-target effects. Critical Issues: The DPN therapeutics directly targeted at the nervous system make up the bulk of currently available treatment options. However, there are significant opportunities based on the targeting of non-neuronal cells and neuroimmune interactions in DPN. Future Directions: Nanomedicine-based agents represent an exciting opportunity for the treatment of DPN with the goals of improving the efficacy and safety profile of analgesia, as well as restoring peripheral neuroregenerative capacity. Antioxid. Redox Signal. 36, 122-143.
Collapse
Affiliation(s)
- Mihály Balogh
- Division of Internal Medicine, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jelena M Janjic
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - Andrew J Shepherd
- Division of Internal Medicine, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| |
Collapse
|
4
|
Satija S, Sharma P, Kaur H, Dhanjal DS, Chopra RS, Khurana N, Vyas M, Sharma N, Tambuwala MM, Bakshi HA, Charbe NB, Zacconi FC, Chellappan DK, Dua K, Mehta M. Perfluorocarbons therapeutics in modern cancer nanotechnology for hypoxia-induced anti-tumor therapy. Curr Pharm Des 2021; 27:4376-4387. [PMID: 34459378 DOI: 10.2174/1381612827666210830100907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 06/28/2021] [Indexed: 11/22/2022]
Abstract
With an estimated failure rate of about 90%, immunotherapies that are intended for the treatment of solid tumors have caused an anomalous rise in the mortality rate over the past decades. It is apparent that resistance towards such therapies primarily occurs due to elevated levels of HIF-1 (Hypoxia-induced factor) in tumor cells, which are caused by disrupted microcirculation and diffusion mechanisms. With the advent of nanotechnology, several innovative advances were brought to the fore; and, one such promising direction is the use of perfluorocarbon nanoparticles in the management of solid tumors. Perfluorocarbon nanoparticles enhance the response of hypoxia-based agents (HBAs) within the tumor cells and have been found to augment the entry of HBAs into the tumor micro-environment. The heightened penetration of HBAs causes chronic hypoxia, thus aiding in the process of cell quiescence. In addition, this technology has also been applied in photodynamic therapy, where oxygen self-enriched photosensitizers loaded perfluorocarbon nanoparticles are employed. The resulting processes initiate a cascade, depleting tumour oxygen and turning it into a reactive oxygen species eventually to destroy the tumour cell. This review elaborates on the multiple applications of nanotechnology based perfluorocarbon formulations that are being currently employed in the treatment of tumour hypoxia.
Collapse
Affiliation(s)
- Saurabh Satija
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara-144411, Punjab. India
| | - Prabal Sharma
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara-144411, Punjab. India
| | - Harpreet Kaur
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara-144411, Punjab. India
| | - Daljeet Singh Dhanjal
- School of Bioengineering and BioSciences, Lovely Professional University, Phagwara-144411, Punjab. India
| | - Reena Singh Chopra
- School of Bioengineering and BioSciences, Lovely Professional University, Phagwara-144411, Punjab. India
| | - Navneet Khurana
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara-144411, Punjab. India
| | - Manish Vyas
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara-144411, Punjab. India
| | - Neha Sharma
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara-144411, Punjab. India
| | - Murtaza M Tambuwala
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland. United Kingdom
| | - Hamid A Bakshi
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, County Londonderry, BT52 1SA, Northern Ireland. United Kingdom
| | - Nitin B Charbe
- Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, 1010 West Avenue B, MSC 131, Kingsville, Texas, 78363. United States
| | - Flavia C Zacconi
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuña McKenna 4860, 7820436 Macul, Santiago. Chile
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil 57000, Kuala Lumpur. Malaysia
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo NSW 2007. Australia
| | - Meenu Mehta
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara-144411, Punjab. India
| |
Collapse
|
5
|
Lambert E, Janjic JM. Quality by design approach identifies critical parameters driving oxygen delivery performance in vitro for perfluorocarbon based artificial oxygen carriers. Sci Rep 2021; 11:5569. [PMID: 33692373 PMCID: PMC7946885 DOI: 10.1038/s41598-021-84076-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/11/2021] [Indexed: 01/15/2023] Open
Abstract
Perfluorocarbons (PFCs) exhibiting high solubility for oxygen are attractive materials as artificial oxygen carriers (AOC), an alternative to whole blood or Haemoglobin-based oxygen carriers (HBOCs). PFC-based AOCs, however, met clinical translation roadblocks due to product quality control challenges. To overcome these issues, we present an adaptation of Quality by Design (QbD) practices to optimization of PFC nanoemulsions (PFC-NEs) as AOCs. QbD elements including quality risk management, design of experiments (DoE), and multivariate data analysis facilitated the identification of composition and process parameters that strongly impacted PFC colloidal stability and oxygen transport function. Resulting quantitative relationships indicated a composition-driven tradeoff between stability and oxygen transport. It was found that PFC content was most predictive of in vitro oxygen release, but the PFC type (perfluoro-15-crown-5-ether, PCE or perfluorooctyl bromide, PFOB) had no effect on oxygen release. Furthermore, we found, under constant processing conditions, all PFC-NEs, comprised of varied PFC and hydrocarbon content, exhibited narrow droplet size range (100–150 nm) and narrow size distribution. Representative PFOB-NE maintained colloidal attributes upon manufacturing on larger scale (100 mL). QbD approach offers unique insights into PFC AOC performance, which will overcome current product development challenges and accelerate clinical translation.
Collapse
Affiliation(s)
- Eric Lambert
- Graduate School of Pharmaceutical Sciences, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA, 15282, USA
| | - Jelena M Janjic
- Graduate School of Pharmaceutical Sciences, Duquesne University, 600 Forbes Avenue, Pittsburgh, PA, 15282, USA.
| |
Collapse
|
6
|
Machado ND, Fernández MA, Díaz DD. Recent Strategies in Resveratrol Delivery Systems. Chempluschem 2020; 84:951-973. [PMID: 31943987 DOI: 10.1002/cplu.201900267] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/21/2019] [Indexed: 12/31/2022]
Abstract
Resveratrol, a natural polyphenolic stilbenoid widely found in grapes and wines, displays beneficial properties such as cardio-protective, antioxidant and anti-inflammatory activities. Trans-resveratrol (RSV) is the most bioactive and more abundant stereoisomer found in nature. Despite the positive properties of RSV, there are various factors that limit its effectiveness, including low aqueous solubility, low oral bioavailability and chemical instability. During the last years, an increasing number of strategies such as nano and micro encapsulation have been developed in order to overcome these limitations and enhance the use of RSV in nutritional and pharmaceutical applications. This Review summarizes the advances and main properties of several RSV carriers and delivery systems reported during the last 5 years.
Collapse
Affiliation(s)
- Noelia D Machado
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Química Orgánica, Ciudad Universitaria, X5000HUA, Cordoba, Argentina.,Instituto de Investigaciones en Físico-Química de Córdoba (INFIQC-CONICET), Ciudad Universitaria, X5000HUA, Cordoba, Argentina
| | - Mariana A Fernández
- Universidad Nacional de Córdoba Facultad de Ciencias Químicas Departamento de Química Orgánica, Ciudad Universitaria, X5000HUA, Cordoba, Argentina.,Instituto de Investigaciones en Físico-Química de Córdoba (INFIQC-CONICET), Ciudad Universitaria, X5000HUA, Cordoba, Argentina
| | - David Díaz Díaz
- Institute of Organic Chemistry, University of Regensburg, Universitätstrasse. 31, 93040, Regensburg, Germany.,Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206, La Laguna, Tenerife, Spain
| |
Collapse
|
7
|
Aggarwal N, Qamar Z, Rehman S, Baboota S, Ali J. Orally Administered Nanotherapeutics For Parkinson's Disease: An Old Delivery System Yet More Acceptable. Curr Pharm Des 2020; 26:2280-2290. [PMID: 32250217 DOI: 10.2174/1381612826666200406072451] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 03/04/2020] [Indexed: 12/17/2022]
Abstract
As per the present global scenario, Parkinson's disease (PD) is considered to be the second most common neurodegenerative disorder which is a keen area of interest among researchers. The conventional therapies generally employed against PD are associated with serious drawbacks including limited transport across selectively permeable BBB, hepatic metabolism, intestinal barrier, etc. This urges the need to develop novel therapeutic alternatives. The oral route being the most preferred route of administration needs to be explored for new and more intelligent drug delivery systems. Nanotechnology has been proposed to play a promising role in reversing the progression of the disease via the oral route. Nanocarriers, namely nanoparticles, lipid nanoparticles, nanoemulsions, nanocrystals, nanomicellar formulations, self-nanoemulsifying drug delivery systems and alginate nanocomposites have been investigated upon to modulate the fate of drugs inside the human body when administered orally. The development of various nanotherapeutics for the treatment of PD has been reviewed, depicting an enhanced bioavailability to provide a desired therapeutic outcome. The new advances in the therapy have been explored and highlighted through the body of this review. However, a therapeutically effective concentration at the target site remains a challenge, therefore extensive exploration in the field of nanotherapeutics may facilitate superior drug delivery to CNS via oral route thereby improving the state of disease progression.
Collapse
Affiliation(s)
- Nidhi Aggarwal
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Zufika Qamar
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Saleha Rehman
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Sanjula Baboota
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| | - Javed Ali
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-110062, India
| |
Collapse
|
8
|
Lambert E, Gorantla VS, Janjic JM. Pharmaceutical design and development of perfluorocarbon nanocolloids for oxygen delivery in regenerative medicine. Nanomedicine (Lond) 2019; 14:2697-2712. [PMID: 31657273 DOI: 10.2217/nnm-2019-0260] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Perfluorocarbons (PFCs) have been investigated as oxygen carriers for several decades in varied biomedical applications. PFCs are chemically and biologically inert, temperature and storage stable, pose low to no infectious risk, can be commercially manufactured, and have well established gas transport properties. In this review, we highlight design and development strategies for their successful application in regenerative medicine, transplantation and organ preservation. Effective tissue preservation strategies are key to improving outcomes of extremity salvage and organ transplantation. Maintaining tissue integrity requires adequate oxygenation to support aerobic metabolism. The use of whole blood for oxygen delivery is fraught with limitations of poor shelf stability, infectious risk, religious exclusions and product shortages. Other agents also face clinical challenges in their implementation. As a solution, we discuss new ways of designing and developing PFC-based artificial oxygen carriers by implementing modern pharmaceutical quality by design and scale up manufacturing methodologies.
Collapse
Affiliation(s)
- Eric Lambert
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA 15282, USA.,Chronic Pain Research Consortium, Duquesne University, Pittsburgh, PA 15282, USA
| | - Vijay S Gorantla
- Department of Surgery, Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC 27101, USA.,AIRMED Program, 59th Medical Wing, United States Air Force, United States Army Institute of Surgical Research, San Antonio, TX 78234, USA
| | - Jelena M Janjic
- Graduate School of Pharmaceutical Sciences, School of Pharmacy, Duquesne University, Pittsburgh, PA 15282, USA.,Chronic Pain Research Consortium, Duquesne University, Pittsburgh, PA 15282, USA.,AIRMED Program, 59th Medical Wing, United States Air Force, United States Army Institute of Surgical Research, San Antonio, TX 78234, USA
| |
Collapse
|
9
|
Lambert E, Janjic JM. Multiple linear regression applied to predicting droplet size of complex perfluorocarbon nanoemulsions for biomedical applications. Pharm Dev Technol 2019; 24:700-710. [PMID: 30724654 PMCID: PMC10182475 DOI: 10.1080/10837450.2019.1578372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/21/2018] [Accepted: 01/24/2019] [Indexed: 10/27/2022]
Abstract
Multiple linear regression (MLR) modeling as a novel methodological advancement for design, development, and optimization of perfluorocarbon nanoemulsions (PFC NEs) is presented. The goal of the presented work is to develop MLR methods applicable to design, development, and optimization of PFC NEs in broad range of biomedical uses. Depending on the intended use of PFC NEs as either therapeutics or diagnostics, NE composition differs in respect to specific applications (e.g. magnetic resonance imaging, drug delivery, etc). PFC NE composition can significantly impact on PFC NE droplet size which impacts the NE performance and quality. We demonstrated earlier that microfluidization combined with sonication produces stable emulsions with high level of reproducibility. The goal of the presented work was to establish correlation between droplet size and composition in complex PFC-in-oil-in-water NEs while manufacturing process parameters are kept constant. Under these conditions, we demonstrate that MLR model can predict droplet size based on formulation variables such as amount and type of PFC oil and hydrocarbon oil. To the best of our knowledge, this is the first report where PFC NE composition was directly related to its colloidal properties and MLR used to predict colloidal properties from composition variables.
Collapse
Affiliation(s)
- Eric Lambert
- a Graduate School of Pharmaceutical Sciences , Duquesne University , Pittsburgh , PA , USA
| | - Jelena M Janjic
- a Graduate School of Pharmaceutical Sciences , Duquesne University , Pittsburgh , PA , USA
- b Chronic Pain Research Consortium , Duquesne University , Pittsburgh , PA , USA
| |
Collapse
|
10
|
Herneisey M, Liu L, Lambert E, Schmitz N, Loftus S, Janjic JM. Development of Theranostic Perfluorocarbon Nanoemulsions as a Model Non-Opioid Pain Nanomedicine Using a Quality by Design (QbD) Approach. AAPS PharmSciTech 2019; 20:65. [PMID: 30627887 DOI: 10.1208/s12249-018-1287-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 12/19/2018] [Indexed: 12/11/2022] Open
Abstract
Pain nanomedicine is an emerging field in response to current needs of addressing the opioid crisis in the USA and around the world. Our group has focused on the development of macrophage-targeted perfluorocarbon nanoemulsions as inflammatory pain nanomedicines over the past several years. We present here, for the first time, a quality by design approach used to design pain nanomedicine. Specifically, we used failure mode, effects, and criticality analysis (FMECA) which identified the process and composition parameters that were most likely to impact nanoemulsion critical quality attributes (CQAs). From here, we applied a unique combination approach that compared multiple linear regression, boosted decision tree regression, and partial least squares regression methods in combination with correlation plots. The presented combination approach allowed for in-depth analyses of which formulation steps in the nanoemulsification processes control nanoemulsion droplet diameter, stability, and drug loading. We identified that increase in solubilizer (transcutol) content increased drug loading and decreased nanoemulsion stability. This was mitigated by inclusion of perfluorocarbon oil in the internal phase. We observed negative correlation (R2 = 0.4357, p value 0.0054) between the amount of PCE and the percent diameter increase (destabilization), and no correlation between processing parameters and percent diameter increase over time. Further, we identified that increased sonication time decreases nanoemulsion drug loading but does not significantly impact droplet diameter or stability. We believe the methods presented here can be useful in the development of various nanomedicines to produce higher-quality products with enhanced manufacturing and design control.
Collapse
|
11
|
Resveratrol and Alzheimer's disease. From molecular pathophysiology to clinical trials. Exp Gerontol 2018; 113:36-47. [DOI: 10.1016/j.exger.2018.09.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/04/2018] [Accepted: 09/21/2018] [Indexed: 12/18/2022]
|
12
|
Halicki PCB, Hädrich G, Boschero R, Ferreira LA, von Groll A, da Silva PEA, Dora CL, Ramos DF. Alternative Pharmaceutical Formulation for Oral Administration of Rifampicin. Assay Drug Dev Technol 2018; 16:456-461. [PMID: 30325673 DOI: 10.1089/adt.2018.874] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Tuberculosis (TB) is considered an emergency global public health, mainly due to the TB-HIV co-infection, bacillus dormancy stage, and emergence of resistant strains. In addition, the therapeutic toxicity and its pharmacokinetic interactions with other drugs may influence treatment non-compliance, low serum concentration of drugs, and, consequently, treatment failure. Strategies using nanotechnology represent a new tool for the therapy, since they are effective delivery systems due to the possibility of solubilization of hydrophobic compounds, enable the production of formulations for oral use, and, in addition, increase bioavailability of drugs. This study aimed to develop a nanoemulsion (NE) containing rifampicin (RIF-NE) and evaluate its in vitro antimycobacterial activity using Resazurin Microtiter Assay against three Mycobacterium tuberculosis strains: two susceptible and a multidrug-resistant. Using the hot solvent diffusion method associated with phase inversion technique was possible to develop a liquid formulation containing 500 μg/mL rifampicin (RIF), which is a hydrophobic compound, of average size 25 nm. The results showed that the minimum inhibitory concentration of the encapsulated RIF was equal to the free form of RIF, indicating that the process of production of NEs did not affect the activity of the compound. Thus, RIF-NE could be a promising alternative for oral administration of RIF, being considered a child-friendly pharmaceutical formulation. Its application could avoid the administration of unknown and/or non-ideal concentrations, being functional in the regimes of prevention and treatment of TB and, in addition, in the fight against drug resistance.
Collapse
Affiliation(s)
| | - Gabriela Hädrich
- Laboratório de Nanotecnologia, Centro de Microscopia Eletrônica da Zona Sul, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Raphael Boschero
- Laboratório de Nanotecnologia, Centro de Microscopia Eletrônica da Zona Sul, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Laís Andrade Ferreira
- Núcleo de Pesquisa em Microbiologia Médica, Faculdade de Medicina, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Andrea von Groll
- Núcleo de Pesquisa em Microbiologia Médica, Faculdade de Medicina, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Pedro Eduardo Almeida da Silva
- Núcleo de Pesquisa em Microbiologia Médica, Faculdade de Medicina, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Cristiana Lima Dora
- Laboratório de Nanotecnologia, Centro de Microscopia Eletrônica da Zona Sul, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| | - Daniela Fernandes Ramos
- Núcleo de Pesquisa em Microbiologia Médica, Faculdade de Medicina, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
| |
Collapse
|