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Pham DT, Nguyen DXT, Nguyen NY, Nguyen TTL, Nguyen TQC, Tu AVT, Nguyen NH, Thuy BTP. Development of pH-responsive Eudragit S100-functionalized silk fibroin nanoparticles as a prospective drug delivery system. PLoS One 2024; 19:e0303177. [PMID: 38781182 PMCID: PMC11115272 DOI: 10.1371/journal.pone.0303177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 04/20/2024] [Indexed: 05/25/2024] Open
Abstract
Silk fibroin nanoparticles (FNP) have been increasingly investigated in biomedical fields due to their biocompatibility and biodegradability properties. To widen the FNP versatility and applications, and to control the drug release from the FNP, this study developed the Eudragit S100-functionalized FNP (ES100-FNP) as a pH-responsive drug delivery system, by two distinct methods of co-condensation and adsorption, employing the zwitterionic furosemide as a model drug. The particles were characterized by sizes and zeta potentials (DLS method), morphology (electron microscopy), drug entrapment efficiency and release profiles (UV-Vis spectroscopy), and chemical structures (FT-IR, XRD, and DSC). The ES100-FNP possessed nano-sizes of ∼200-350 nm, zeta potentials of ∼ -20 mV, silk-II structures, enhanced thermo-stability, non-cytotoxic to the erythrocytes, and drug entrapment efficiencies of 30%-60%, dependent on the formulation processes. Interestingly, the co-condensation method yielded the smooth spherical particles, whereas the adsorption method resulted in durian-shaped ones due to furosemide re-crystallization. The ES100-FNP adsorbed furosemide via physical adsorption, followed Langmuir model and pseudo-second-order kinetics. In the simulated oral condition, the particles could protect the drug in the stomach (pH 1.2), and gradually released the drug in the intestine (pH 6.8). Remarkably, in different pH conditions of 6.8, 9.5, and 12, the ES100-FNP could control the furosemide release rates depending on the formulation methods. The ES100-FNP made by the co-condensation method was mainly controlled by the swelling and corrosion process of ES100, and followed the Korsmeyer-Peppas non-Fickian transport mechanism. Whereas, the ES100-FNP made by the adsorption method showed constant release rates, followed the zero-order kinetics, due to the gradual furosemide dissolution in the media. Conclusively, the ES100-FNP demonstrated high versatility as a pH-responsive drug delivery system for biomedical applications.
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Affiliation(s)
- Duy Toan Pham
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Doan Xuan Tien Nguyen
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Ngoc Yen Nguyen
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Thi Truc Linh Nguyen
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Thanh Q. C. Nguyen
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Anh Vo Thi Tu
- Department of Biology, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Ngoc Huyen Nguyen
- Department of Biostatistics and Demography, Faculty of Public Health, Can Tho University of Medicine and Pharmacy, Can Tho, Vietnam
| | - Bui Thi Phuong Thuy
- Faculty of Fundamental Sciences, Van Lang University, Ho Chi Minh City, Vietnam
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Elmowafy M, Shalaby K, Elkomy MH, Alsaidan OA, Gomaa HAM, Abdelgawad MA, Mostafa EM. Polymeric Nanoparticles for Delivery of Natural Bioactive Agents: Recent Advances and Challenges. Polymers (Basel) 2023; 15:polym15051123. [PMID: 36904364 PMCID: PMC10007077 DOI: 10.3390/polym15051123] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
In the last few decades, several natural bioactive agents have been widely utilized in the treatment and prevention of many diseases owing to their unique and versatile therapeutic effects, including antioxidant, anti-inflammatory, anticancer, and neuroprotective action. However, their poor aqueous solubility, poor bioavailability, low GIT stability, extensive metabolism as well as short duration of action are the most shortfalls hampering their biomedical/pharmaceutical applications. Different drug delivery platforms have developed in this regard, and a captivating tool of this has been the fabrication of nanocarriers. In particular, polymeric nanoparticles were reported to offer proficient delivery of various natural bioactive agents with good entrapment potential and stability, an efficiently controlled release, improved bioavailability, and fascinating therapeutic efficacy. In addition, surface decoration and polymer functionalization have opened the door to improving the characteristics of polymeric nanoparticles and alleviating the reported toxicity. Herein, a review of the state of knowledge on polymeric nanoparticles loaded with natural bioactive agents is presented. The review focuses on frequently used polymeric materials and their corresponding methods of fabrication, the needs of such systems for natural bioactive agents, polymeric nanoparticles loaded with natural bioactive agents in the literature, and the potential role of polymer functionalization, hybrid systems, and stimuli-responsive systems in overcoming most of the system drawbacks. This exploration may offer a thorough idea of viewing the polymeric nanoparticles as a potential candidate for the delivery of natural bioactive agents as well as the challenges and the combating tools used to overcome any hurdles.
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Affiliation(s)
- Mohammed Elmowafy
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia
- Correspondence: ; Tel.: +966-541869569
| | - Khaled Shalaby
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia
| | - Mohammed H. Elkomy
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia
| | - Omar Awad Alsaidan
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia
| | - Hesham A. M. Gomaa
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia
| | - Mohamed A. Abdelgawad
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia
| | - Ehab M. Mostafa
- Department of Pharmacognosy, College of Pharmacy, Jouf University, Sakaka P.O. Box 2014, Saudi Arabia
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Sachdeva A, Dhawan D, Jain GK, Yerer MB, Collignon TE, Tewari D, Bishayee A. Novel Strategies for the Bioavailability Augmentation and Efficacy Improvement of Natural Products in Oral Cancer. Cancers (Basel) 2022; 15:cancers15010268. [PMID: 36612264 PMCID: PMC9818473 DOI: 10.3390/cancers15010268] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/21/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023] Open
Abstract
Oral cancer is emerging as a major cause of mortality globally. Oral cancer occupies a significant proportion of the head and neck, including the cheeks, tongue, and oral cavity. Conventional methods in the treatment of cancer involve surgery, radiotherapy, and immunotherapy, and these have not proven to completely eradicate cancerous cells, may lead to the reoccurrence of oral cancer, and possess numerous adverse side effects. Advancements in novel drug delivery approaches have gained popularity in cancer management with an increase in the number of cases associated with oral cancer. Natural products are potent sources for drug discovery, especially for anticancer drugs. Natural product delivery has major challenges due to its low solubility, poor absorption, inappropriate size, instability, poor permeation, and first-pass metabolism. Therefore, it is of prime importance to investigate novel treatment approaches for the delivery of bioactive natural products. Nanotechnology is an advanced method of delivering cancer therapy with minimal damage to normal cells while targeting cancer cells. Therefore, the present review elaborates on the advancements in novel strategies for natural product delivery that lead to the significant enhancement of bioavailability, in vivo activity, and fewer adverse events for the prevention and treatment of oral cancer. Various approaches to accomplish the desired results involve size reduction, surface property modification, and polymer attachment, which collectively result in the higher stability of the formulation.
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Affiliation(s)
- Alisha Sachdeva
- Department of Pharmaceutics, Delhi Institute of Pharmaceutical Sciences and Research, Delhi Pharmaceutical Sciences and Research University, New Delhi 110 017, India
| | - Dimple Dhawan
- Department of Pharmaceutics, Delhi Institute of Pharmaceutical Sciences and Research, Delhi Pharmaceutical Sciences and Research University, New Delhi 110 017, India
| | - Gaurav K. Jain
- Department of Pharmaceutics, Delhi Institute of Pharmaceutical Sciences and Research, Delhi Pharmaceutical Sciences and Research University, New Delhi 110 017, India
- Center for Advanced Formulation Development, Delhi Pharmaceutical Sciences and Research University, New Delhi 110 017, India
| | - Mükerrem Betül Yerer
- Department of Pharmacology, Faculty of Pharmacy, Erciyes University, Kayseri 38039, Turkey
| | - Taylor E. Collignon
- College of Osteopathic Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, FL 34211, USA
| | - Devesh Tewari
- Department of Pharmacognosy and Phytochemistry, School of Pharmaceutical Sciences, Delhi Pharmaceutical Sciences and Research University, New Delhi 110 017, India
- Correspondence: or (D.T.); or (A.B.)
| | - Anupam Bishayee
- College of Osteopathic Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, FL 34211, USA
- Correspondence: or (D.T.); or (A.B.)
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Targeting vascular inflammation through emerging methods and drug carriers. Adv Drug Deliv Rev 2022; 184:114180. [PMID: 35271986 PMCID: PMC9035126 DOI: 10.1016/j.addr.2022.114180] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 02/18/2022] [Accepted: 03/04/2022] [Indexed: 12/16/2022]
Abstract
Acute inflammation is a common dangerous component of pathogenesis of many prevalent conditions with high morbidity and mortality including sepsis, thrombosis, acute respiratory distress syndrome (ARDS), COVID-19, myocardial and cerebral ischemia-reperfusion, infection, and trauma. Inflammatory changes of the vasculature and blood mediate the course and outcome of the pathology in the tissue site of insult, remote organs and systemically. Endothelial cells lining the luminal surface of the vasculature play the key regulatory functions in the body, distinct under normal vs. pathological conditions. In theory, pharmacological interventions in the endothelial cells might enable therapeutic correction of the overzealous damaging pro-inflammatory and pro-thrombotic changes in the vasculature. However, current agents and drug delivery systems (DDS) have inadequate pharmacokinetics and lack the spatiotemporal precision of vascular delivery in the context of acute inflammation. To attain this level of precision, many groups design DDS targeted to specific endothelial surface determinants. These DDS are able to provide specificity for desired tissues, organs, cells, and sub-cellular compartments needed for a particular intervention. We provide a brief overview of endothelial determinants, design of DDS targeted to these molecules, their performance in experimental models with focus on animal studies and appraisal of emerging new approaches. Particular attention is paid to challenges and perspectives of targeted therapeutics and nanomedicine for advanced management of acute inflammation.
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Lecot N, Dávila B, Sánchez C, Fernández M, González M, Cabral P, Cerecetto H, Glisoni R. Development and Evaluation of 2-Amino-7-Fluorophenazine 5,10-Dioxide Polymeric Micelles as Antitumoral Agents for 4T1 Breast Cancer. Polymers (Basel) 2021; 14:71. [PMID: 35012094 PMCID: PMC8747360 DOI: 10.3390/polym14010071] [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: 11/08/2021] [Revised: 12/18/2021] [Accepted: 12/22/2021] [Indexed: 11/23/2022] Open
Abstract
2-Amino-7-fluorophenazine 5,10-dioxide (FNZ) is a bioreducible prodrug, poorly soluble in water, with potential anticancer activity on hypoxic-tumors. This poor solubility limits its potential applications in clinic. Amphiphilic pristine polymeric micelles (PMs) based on triblock copolymers Pluronic® and Tetronic®, glycosylated derivatives and their mixtures with preformed-liposomes (LPS), were analyzed as strategies to improve the bioavailability of FNZ. FNZ encapsulations were performed and the obtaining nanostructures were characterized using UV-visible spectroscopy (UV-VIS), Transmission Electron Microscopy (TEM) and Dynamic Light Scattering (DLS). The most promising nanoformulations were analyzed for their potential toxicity and pharmacologically, at 20 mg/kg FNZ-doses, in a stage-IV murine metastatic-breast tumor model. The results revealed that the solubility of the encapsulated-FNZ increased up to 14 times and the analysis (UV-VIS, DLS and TEM) confirmed the interaction between vehicles and FNZ. In all the cases appropriate encapsulation efficiencies (greater than 75%), monodisperse nanometric particle sizes (PDI = 0.180-0.335), adequate Z-potentials (-1.59 to -26.4 mV), stabilities and spherical morphologies were obtained. The in vitro profile of FNZ controlled releases corresponded mainly to a kinetic Higuchi model. The in vitro/in vivo biological studies revealed non-toxicity and relevant tumor-weight diminution (up to 61%).
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Affiliation(s)
- Nicole Lecot
- Laboratorio de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay; (P.C.); (H.C.)
- Grupo de Química Orgánica Medicinal, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay; (B.D.); (C.S.); (M.G.)
| | - Belén Dávila
- Grupo de Química Orgánica Medicinal, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay; (B.D.); (C.S.); (M.G.)
| | - Carina Sánchez
- Grupo de Química Orgánica Medicinal, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay; (B.D.); (C.S.); (M.G.)
| | - Marcelo Fernández
- Laboratorio de Experimentación Animal, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay;
| | - Mercedes González
- Grupo de Química Orgánica Medicinal, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay; (B.D.); (C.S.); (M.G.)
| | - Pablo Cabral
- Laboratorio de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay; (P.C.); (H.C.)
| | - Hugo Cerecetto
- Laboratorio de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay; (P.C.); (H.C.)
- Grupo de Química Orgánica Medicinal, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Mataojo 2055, Montevideo 11400, Uruguay; (B.D.); (C.S.); (M.G.)
| | - Romina Glisoni
- Departamento de Tecnología Farmacéutica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, Buenos Aires C1113AAD, Argentina
- Instituto de Nanobiotecnología (NANOBIOTEC), CONICET-Universidad de Buenos Aires, Junín 956, Buenos Aires C1113AAD, Argentina
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T908 Polymeric Micelles Improved the Uptake of Sgc8-c Aptamer Probe in Tumor-Bearing Mice: A Co-Association Study between the Probe and Preformed Nanostructures. Pharmaceuticals (Basel) 2021; 15:ph15010015. [PMID: 35056072 PMCID: PMC8780797 DOI: 10.3390/ph15010015] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 12/13/2022] Open
Abstract
Aptamers are oligonucleotides that have the characteristic of recognizing a target with high affinity and specificity. Based on our previous studies, the aptamer probe Sgc8-c-Alexa647 is a promising tool for molecular imaging of PTK7, which is an interesting biomarker in cancer. In order to improve the delivery of this probe as well as create a novel drug delivery nanosystem targeted to the PTK7 receptor, we evaluate the co-association between the probe and preformed nanostructures. In this work, preformed pegylated liposomes (PPL) and linear and branched pristine polymeric micelles (PMs), based on PEO–PPO–PEO triblock copolymers were used: poloxamer F127® and poloxamines T1307® and T908®. For it, Sgc8-c-Alexa647 and its co-association with the different nanostructures was exhaustively analyzed. DLS analysis showed nanometric sizes, and TEM and AFM showed notable differences between free- and co-associated probe. Likewise, all nanosystems were evaluated on A20 lymphoma cell line overexpressing PTK7, and the confocal microscopy images showed distinctness in cellular uptake. Finally, the biodistribution in BALB/c mice bearing lymphoma-tumor and pharmacokinetic study revealed an encouraging profile for T908-probe. All data obtained from this work suggested that PMs and, more specifically T908 ones, are good candidates to improve the pharmacokinetics and the tumor uptake of aptamer-based probes.
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Toscanini MA, Limeres MJ, Garrido AV, Cagel M, Bernabeu E, Moretton MA, Chiappetta DA, Cuestas ML. Polymeric micelles and nanomedicines: Shaping the future of next generation therapeutic strategies for infectious diseases. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Eudragit-Coated Sporopollenin Exine Microcapsules (SEMC) of Phoenix dactylifera L. of 5-Fluorouracil for Colon-Specific Drug Delivery. Pharmaceutics 2021; 13:pharmaceutics13111921. [PMID: 34834336 PMCID: PMC8621040 DOI: 10.3390/pharmaceutics13111921] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 11/01/2021] [Accepted: 11/05/2021] [Indexed: 11/17/2022] Open
Abstract
In this study, 5-fluorouracil (5-FU)-loaded pollens of Phoenix dactylifera and their coating with ERS was done and evaluated for the colon-targeted delivery of 5-FU to treat colon cancer. Sporopollenin exine microcapsules (SEMC) from the pollens of Phoenix dactylifera were extracted by the reflux method and 5-FU into SEMC was encapsulated by the vacuum-assisted loading method. 5-FU loaded SEMC was coated with Eudragit® RS-100 (ERS) by the organic solvent-evaporation technique under vacuum to avoid the discharge of 5-FU in the stomach and small intestine. Morphological and physicochemical characterization of drug-loaded SEMC (coated/uncoated) was performed by scanning electron microscopy (SEM), FTIR, XRD, and DSC. The encapsulation and drug loading were determined by the direct method, and an in vitro release study was performed in simulated gastric and intestinal fluids (SGF/SIF). The colon-specific delivery of 5-FU from the SEMC was assessed in terms of pharmacokinetics and gastrointestinal tract distribution after oral administration in rats. The successful encapsulation and loading of 5-FU into SEMC by a vacuum-assisted loading technique and its coating with ERS by a solvent-evaporation technique were achieved. SEM images of uncoated SEMC have shown porous structures, and coating with ERS reserved their morphology with a smooth surface and discrete microstructures and the 5% w/v ERS acetone solution. ERS-coated SEMC sustained the release of 5-FU until 24 h in SIF, while it was up to 12 h only from uncoated SEMC. The maximum plasma concentration (Cmax) of 5-FU from uncoated SEMC was 102.82 μg/mL after 1 h, indicating a rapid release of 5-FU in the upper gastrointestinal tract. This concentration decreased quickly with a half-life of 4 h, AUC0-t was 264.1 μg/mL.h, and MRT0-inf was 5.2 h. The Cmax of 5-FU from ERS-coated SEMC was 19.47 μg/mL at 16 h. The Cmax of 5-FU in small intestines was 406.2 μg/g at 1 h from uncoated SEMC and 1271.5 μg/g at 12 h from coated SEMC. Conclusively, a 249.9-fold higher relative bioavailability of 5-FU was achieved with the ERS-coated SEMC in colon tissues than that from uncoated SEMC.
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Yu S, Wei Z, Xiao H, Mohamed H, Xu S, Yang X, Ren X, Li L, Song Y. Effect of mono- and double-layer polysaccharide surface coating on the physical stability of nanoliposomes under various environments. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Iles B, Ribeiro de Sá Guimarães Nolêto I, Dourado FF, de Oliveira Silva Ribeiro F, de Araújo AR, de Oliveira TM, Souza JMT, Barros AB, Sousa GC, de Jesus Oliveira AC, da Silva Martins C, de Oliveira Viana Veras M, de Carvalho Leitão RF, de Souza de Almeida Leite JR, da Silva DA, Medeiros JVR. Alendronate sodium-polymeric nanoparticles display low toxicity in gastric mucosal of rats and Ofcol II cells. NANOIMPACT 2021; 24:100355. [PMID: 35559814 DOI: 10.1016/j.impact.2021.100355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 06/15/2023]
Abstract
The use of bisphosphonates constitutes the gold-standard therapy for the control and treatment of bone diseases. However, its long-term use may lead to gastric problems, which limits the treatment. Thus, this study aimed to formulate a nanostructured system with biodegradable polymers for the controlled release of alendronate sodium. The nanoparticles were characterized, and its gastric toxicity was investigated in rats. The synthesis process proved to be effective for encapsulating alendronate sodium, exhibiting nanoparticles with an average size of 51.02 nm and 98.5% of alendronate sodium incorporation. The release tests demonstrated a controlled release of the drug in 420 min, while the morphological analyzes showed spherical shapes and no apparent roughness. The biological tests demonstrated that the alendronate sodium nanoformulation reversed the gastric lesions, maintaining the normal levels of malondialdehyde and myeloperoxidase. Also, the encapsulated alendronate sodium showed no toxicity in murine osteoblastic cells, even at high concentrations.
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Affiliation(s)
- Bruno Iles
- Laboratory of Inflammation and Gastrointestinal Disorders (Lafidg), Federal University of the Parnaíba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil; Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Isabela Ribeiro de Sá Guimarães Nolêto
- Laboratory of Inflammation and Gastrointestinal Disorders (Lafidg), Federal University of the Parnaíba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil; Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Flaviane França Dourado
- Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Fábio de Oliveira Silva Ribeiro
- Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Alyne Rodrigues de Araújo
- Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Taiane Maria de Oliveira
- Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Jessica Maria Teles Souza
- Parnaíba Delta Cell Culture Laboratory (LCC-Delta), Federal University of the Parnaíba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Ayslan Batista Barros
- Parnaíba Delta Cell Culture Laboratory (LCC-Delta), Federal University of the Parnaíba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Gabrielle Costa Sousa
- Laboratory of Inflammation and Gastrointestinal Disorders (Lafidg), Federal University of the Parnaíba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil; Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Antônia Carla de Jesus Oliveira
- Quality Control Center for Medicines and Correlates - NCQMC, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235 - University City, Recife, PE 50670-901, Brazil
| | - Conceição da Silva Martins
- Nucleus of Studies in Microscopy and Image Processing - NEMPI, Federal University of Ceará, Rua Alexandre Baraúna, 994 - Rodolfo Teófilo, Fortaleza, CE 60430-160, Brazil
| | - Mariana de Oliveira Viana Veras
- Nucleus of Studies in Microscopy and Image Processing - NEMPI, Federal University of Ceará, Rua Alexandre Baraúna, 994 - Rodolfo Teófilo, Fortaleza, CE 60430-160, Brazil
| | - Renata Ferreira de Carvalho Leitão
- Nucleus of Studies in Microscopy and Image Processing - NEMPI, Federal University of Ceará, Rua Alexandre Baraúna, 994 - Rodolfo Teófilo, Fortaleza, CE 60430-160, Brazil
| | - José Roberto de Souza de Almeida Leite
- Center for Research in Applied Morphology and Immunology - NuPMIA, University of Brasilia, Campus Darcy Ribeiro - Asa Norte-Brasília-DF, CEP 70.910-900 Brasilia, Brazil
| | - Durcilene Alves da Silva
- Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil
| | - Jand Venes Rolim Medeiros
- Laboratory of Inflammation and Gastrointestinal Disorders (Lafidg), Federal University of the Parnaíba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil; Biotechnology and Biodiversity Research Center (Biotec), Federal University of the Parnaiba Delta, Av. São Sebastião, 2819, Parnaíba, PI CEP 64202-020, Brazil.
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Guo Y, Gao T, Fang F, Sun S, Yang D, Li Y, Lv S. A novel polymer micelle as a targeted drug delivery system for 10-hydroxycamptothecin with high drug-loading properties and anti-tumor efficacy. Biophys Chem 2021; 279:106679. [PMID: 34547633 DOI: 10.1016/j.bpc.2021.106679] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 08/31/2021] [Accepted: 08/31/2021] [Indexed: 01/14/2023]
Abstract
A novel polyethylene glycol-polycaprolactone-poly-l-tyrosine (MPEG-PCL-PTyr) amphiphilic triblock copolymer micelle was synthesized for the first time. 10-hydroxycamptothecin (HCPT) was embedded in MPEG-PCL-PTyr nanomicelles using the emulsion solvent evaporation method. A series of was conducted to confirm the structure of the compound and to evaluate the physical properties of the MPEG-PCL-PTyr nanomicelles. Cellular uptake, cytotoxicity, and apoptosis were assessed using flow cytometry and MTT assays. Confocal microscopy and flow cytometry results demonstrated that the nanocapsules carrying HCPT had significantly increased anti-tumor activity against HepG2 cells and could target HepG2 cell lysosomes with obvious liver targeting. In addition, the drug-loaded nanomicelles could significantly block the S phase of cancer cells and induce apoptosis; thus, they could be potential carriers for future 10-HCPT delivery and cancer treatment.
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Affiliation(s)
- Yuyan Guo
- Heilongjiang University of Chinese Medicine, China
| | - Tao Gao
- Heilongjiang University of Chinese Medicine, China
| | - Fang Fang
- Heilongjiang University of Chinese Medicine, China
| | - Shuang Sun
- Heilongjiang University of Chinese Medicine, China
| | - Dayu Yang
- Heilongjiang University of Chinese Medicine, China
| | - Yongji Li
- Heilongjiang University of Chinese Medicine, China
| | - Shaowa Lv
- Heilongjiang University of Chinese Medicine, China.
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12
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Lincha VR, Zhao J, Wen X, Xiong C, S-L Chow D, Li C. A polymeric micellar drug delivery system developed through a design of Experiment approach improves pancreatic tumor accumulation of calcipotriol and paclitaxel. Int J Pharm 2021; 601:120523. [PMID: 33775721 PMCID: PMC8122084 DOI: 10.1016/j.ijpharm.2021.120523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 02/07/2023]
Abstract
The aim of this study was to develop optimal micelles loaded with calcipotriol (Cal) and paclitaxel (PTX) for the treatment of pancreatic ductal adenocarcinoma (PDAC) using a Design of Experiment (DOE) approach. The central composite design (CCD), a type of DOE was used to tune the size and drug release properties of the drug-loaded micelles. This approach yielded optimal Cal and PTX co-loaded micelles (M-Cal/PTX) with size of 40-100 nm, a polydispersity index (PDI) of 0.25 and a zeta potential (ζ) of − 6.2 ± 0.8 mV. When evaluated in vitro, drug release from the micelles showed a biphasic pattern. The initial release, defined as the cumulative 2-hr drug release was less than 25% in all relevant media. This phase was followed by a gradual release with less than 80% of drugs released after 5 days. In vivo, the micelles prolonged the apparent biological half-life of Cal by more than 3 times and a marginal increase for PTX in an orthotopic mouse model of PDAC. The micelle-encapsulated drugs showed extended tumor accumulation when compared to non-encapsulated Cal and PTX at equivalent dose levels. Future studies on the antitumor activity of this novel dual drug payload delivery system are warranted.
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Affiliation(s)
- Victor R Lincha
- Department of Pharmaceutical and Pharmacological Sciences, College of Pharmacy, University of Houston, TX, USA
| | - Jun Zhao
- Cancer Systems Imaging, The University of Texas M.D Anderson Cancer Center, Houston, TX 77054, USA; School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, Hubei Province 430030, China
| | - Xiaoxia Wen
- Cancer Systems Imaging, The University of Texas M.D Anderson Cancer Center, Houston, TX 77054, USA
| | - Chiyi Xiong
- Cancer Systems Imaging, The University of Texas M.D Anderson Cancer Center, Houston, TX 77054, USA
| | - Diana S-L Chow
- Department of Pharmaceutical and Pharmacological Sciences, College of Pharmacy, University of Houston, TX, USA.
| | - Chun Li
- Cancer Systems Imaging, The University of Texas M.D Anderson Cancer Center, Houston, TX 77054, USA.
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Gao XF, Liu Q, Qing H, Mu KM, Zhang J, Zhang D, Li H, Mao SJ. Development of eugenol-loaded submicron emulsion and its antiepileptic effect through regulating the oxidative stress. Int J Pharm 2020; 587:119724. [PMID: 32755685 DOI: 10.1016/j.ijpharm.2020.119724] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/13/2020] [Accepted: 07/30/2020] [Indexed: 11/16/2022]
Abstract
The purpose of this study was to develop an injectable submicron emulsion of eugenol (Eug-SE) and to investigate its antagonism on epilepsy. The formulation was optimized using a complete randomized design, comprising 5% (w/v) eugenol, 5% (w/v) soybean oil, 1.2% (w/v) egg phosphatidylcholine, 0.3% (w/v) poloxamer 188, and 0.03% (w/v) sodium oleate. The prepared Eug-SE was comprehensively evaluated in terms of its pharmaceutical characteristics, physicochemical stability, injection safety, antioxidant activity in vitro, and anti-epileptic effect in vivo. The mean particle size of Eug-SE was 176.1 ± 10.3 nm, the ζ-potential was -40.2 ± 1.8 mV, and the drug content was (95.3 ± 0.4) %. Moreover, the Eug-SE displayed excellent stability and improved safety compared to the eugenol solution. The Eug-SE (20 μg/mL) produced a significant neuroprotective effect against H2O2-induced oxidative damage in PC12 cells, which was attributed to the decrease of cellular reactive oxygen species level and mitochondrial damage. Besides, the in vivo test indicated that Eug-SE exerted an anti-epileptic effect in the PTZ treated mice. These results suggested that Eug-SE was a suitable dosage form of eugenol for injection, and displayed great therapeutic potential for neurological disease in the future.
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Affiliation(s)
- Xiao-Feng Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Qi Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hong Qing
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ke-Man Mu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jian Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Di Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Hui Li
- Department of Hematology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital & Affiliated Hospital of University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Sheng-Jun Mao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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14
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Krieser K, Emanuelli J, Daudt RM, Bilatto S, Willig JB, Guterres SS, Pohlmann AR, Buffon A, Correa DS, Külkamp-Guerreiro IC. Taste-masked nanoparticles containing Saquinavir for pediatric oral administration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111315. [PMID: 32919675 DOI: 10.1016/j.msec.2020.111315] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 05/04/2020] [Accepted: 07/20/2020] [Indexed: 11/17/2022]
Abstract
This research has aimed to improve the stability and taste-masking properties by developing nanostructured dosage forms containing Saquinavir. Liquid formulations were developed using Eudragit RS100® and Pullulan as polymers. The physicochemical characteristics, stability, in vitro drug release, morphology, mucoadhesion and taste masking capacity were evaluated. The Saquinavir-nanoparticles had average diameters between 136 and 158 nm, with a Span below 1.4. These formulations presented a drug content above 80%, a high encapsulation efficiency (>97%), slightly acidic pH levels, low dynamic viscosity and controlled drug release. Electron microscopy revealed irregular spherical nanoparticles. The formulations prepared with higher amounts of Eudragit RS100® had greater mucoadhesion. Both polymers were able to improve drug stabilization, taste-masking properties and protection against drug cytotoxicity. The Saquinavir-nanoparticles exhibited stability and control releasing properties, thus making it a promising liquid dosage form with taste-masking properties intended for application in pediatric treatment.
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Affiliation(s)
- Katherine Krieser
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Ipiranga, 2572, Porto Alegre, RS 90610-000, Brazil
| | - Juliana Emanuelli
- Programa de Pós-Graduação em Ciências Farmacêuticas, UFRGS, Avenida Ipiranga, 2752, Porto Alegre, RS 90610-000, Brazil
| | - Renata Moschini Daudt
- Departamento de Engenharia Química, UFRGS, Rua Engenheiro Luiz Englert s/n, Porto Alegre, RS 90040-040, Brazil
| | - Stanley Bilatto
- Laboratório Nacional de Nanotecnologia para o Agronegócio (LNNA), Embrapa Instrumentação, 13560-970 São Carlos, São Paulo, Brazil
| | - Julia Biz Willig
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Ipiranga, 2572, Porto Alegre, RS 90610-000, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, UFRGS, Avenida Ipiranga, 2752, Porto Alegre, RS 90610-000, Brazil
| | - Silvia Stanisçuaski Guterres
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Ipiranga, 2572, Porto Alegre, RS 90610-000, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, UFRGS, Avenida Ipiranga, 2752, Porto Alegre, RS 90610-000, Brazil
| | - Adriana Raffin Pohlmann
- Programa de Pós-Graduação em Ciências Farmacêuticas, UFRGS, Avenida Ipiranga, 2752, Porto Alegre, RS 90610-000, Brazil.; Departamento de Química Orgânica, Instituto de Química, UFRGS, CP15003, Av. Bento Gonçalves, 9500, Porto Alegre, RS 91501-970, Brazil
| | - Andréia Buffon
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Ipiranga, 2572, Porto Alegre, RS 90610-000, Brazil
| | - Daniel Souza Correa
- Laboratório Nacional de Nanotecnologia para o Agronegócio (LNNA), Embrapa Instrumentação, 13560-970 São Carlos, São Paulo, Brazil
| | - Irene Clemes Külkamp-Guerreiro
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Ipiranga, 2572, Porto Alegre, RS 90610-000, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, UFRGS, Avenida Ipiranga, 2752, Porto Alegre, RS 90610-000, Brazil..
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Witika BA, Makoni PA, Matafwali SK, Chabalenge B, Mwila C, Kalungia AC, Nkanga CI, Bapolisi AM, Walker RB. Biocompatibility of Biomaterials for Nanoencapsulation: Current Approaches. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1649. [PMID: 32842562 PMCID: PMC7557593 DOI: 10.3390/nano10091649] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/05/2020] [Accepted: 08/09/2020] [Indexed: 12/12/2022]
Abstract
Nanoencapsulation is an approach to circumvent shortcomings such as reduced bioavailability, undesirable side effects, frequent dosing and unpleasant organoleptic properties of conventional drug delivery systems. The process of nanoencapsulation involves the use of biomaterials such as surfactants and/or polymers, often in combination with charge inducers and/or ligands for targeting. The biomaterials selected for nanoencapsulation processes must be as biocompatible as possible. The type(s) of biomaterials used for different nanoencapsulation approaches are highlighted and their use and applicability with regard to haemo- and, histocompatibility, cytotoxicity, genotoxicity and carcinogenesis are discussed.
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Affiliation(s)
- Bwalya A. Witika
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa; (B.A.W.); (P.A.M.)
| | - Pedzisai A. Makoni
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa; (B.A.W.); (P.A.M.)
| | - Scott K. Matafwali
- Department of Basic Sciences, School of Medicine, Copperbelt University, Ndola 10101, Zambia;
| | - Billy Chabalenge
- Department of Market Authorization, Zambia Medicines Regulatory Authority, Lusaka 10101, Zambia;
| | - Chiluba Mwila
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka 10101, Zambia; (C.M.); (A.C.K.)
| | - Aubrey C. Kalungia
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka 10101, Zambia; (C.M.); (A.C.K.)
| | - Christian I. Nkanga
- Department of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmaceutical Sciences, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of the Congo;
| | - Alain M. Bapolisi
- Department of Chemistry, Faculty of Science, Rhodes University, Makhanda 6140, South Africa;
| | - Roderick B. Walker
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa; (B.A.W.); (P.A.M.)
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16
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Ofridam F, Lebaz N, Gagnière É, Mangin D, Elaissari A. Effect of secondary polymer on self‐precipitation of pH‐sensitive polymethylmethacrylate derivatives Eudragit E100 and Eudragit L100. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.4856] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fabrice Ofridam
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F–69100 Villeurbanne France
| | - Noureddine Lebaz
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F–69100 Villeurbanne France
| | - Émilie Gagnière
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F–69100 Villeurbanne France
| | - Denis Mangin
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F–69100 Villeurbanne France
| | - Abdelhamid Elaissari
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F–69100 Villeurbanne France
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17
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Hamdallah SI, Zoqlam R, Erfle P, Blyth M, Alkilany AM, Dietzel A, Qi S. Microfluidics for pharmaceutical nanoparticle fabrication: The truth and the myth. Int J Pharm 2020; 584:119408. [PMID: 32407942 DOI: 10.1016/j.ijpharm.2020.119408] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 12/25/2022]
Abstract
Using micro-sized channels to manipulate fluids is the essence of microfluidics which has wide applications from analytical chemistry to material science and cell biology research. Recently, using microfluidic-based devices for pharmaceutical research, in particular for the fabrication of micro- and nano-particles, has emerged as a new area of interest. The particles that can be prepared by microfluidic devices can range from micron size droplet-based emulsions to nano-sized drug loaded polymeric particles. Microfluidic technology poses unique advantages in terms of the high precision of the mixing regimes and control of fluids involved in formulation preparation. As a result of this, monodispersity of the particles prepared by microfluidics is often recognised as being a particularly advantageous feature in comparison to those prepared by conventional large-scale mixing methods. However, there is a range of practical drawbacks and challenges of using microfluidics as a direct micron- and nano-particle manufacturing method. Technological advances are still required before this type of processing can be translated for application by the pharmaceutical industry. This review focuses specifically on the application of microfluidics for pharmaceutical solid nanoparticle preparation and discusses the theoretical foundation of using the nanoprecipitation principle to generate particles and how this is translated into microfluidic design and operation.
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Affiliation(s)
- Sherif I Hamdallah
- School of Pharmacy, University of East Anglia, Norwich NR4 7TJ, UK; Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Randa Zoqlam
- School of Pharmacy, University of East Anglia, Norwich NR4 7TJ, UK
| | - Peer Erfle
- Technische Universität Braunschweig, Institut für Mikrotechnik / Institute of Microtechnology, Alte Salzdahlumer Str. 203, Geb. 1A, 38124 Braunschweig, Germany; Technische Universität Braunschweig, Center of Pharmaceutical Engineering, Franz-Liszt-Str. 35a, 38106 Braunschweig, Germany
| | - Mark Blyth
- School of Mathematics, University of East Anglia, Norwich NR4 7TJ, UK
| | - Alaaldin M Alkilany
- Department of Pharmaceutics & Pharmaceutical Technology, School of Pharmacy, The University of Jordan, Amman 11942, Jordan
| | - Andreas Dietzel
- Technische Universität Braunschweig, Institut für Mikrotechnik / Institute of Microtechnology, Alte Salzdahlumer Str. 203, Geb. 1A, 38124 Braunschweig, Germany; Technische Universität Braunschweig, Center of Pharmaceutical Engineering, Franz-Liszt-Str. 35a, 38106 Braunschweig, Germany
| | - Sheng Qi
- School of Pharmacy, University of East Anglia, Norwich NR4 7TJ, UK.
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18
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Gupta S, Kesarla R, Omri A. Approaches for CNS delivery of drugs - nose to brain targeting of antiretroviral agents as a potential attempt for complete elimination of major reservoir site of HIV to aid AIDS treatment. Expert Opin Drug Deliv 2020; 16:287-300. [PMID: 30779602 DOI: 10.1080/17425247.2019.1583206] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Human immune-deficiency virus (HIV) infection causing acquired immune-deficiency syndrome (AIDS) is one of the most life-threatening infections. The central nervous system (CNS) is reported to be the most important HIV reservoir site where the antiretroviral drugs are unable to reach. AREAS COVERED This article includes the review about HIV infections, its pathogenesis, HIV infections in CNS, its consequences, current therapies, challenges associated with the existing therapies, approaches to overcome them, CNS delivery of drugs - barriers, transport routes, approaches for transporting drugs across the blood-brain barrier, nasal route of drug delivery, and nose to brain targeting of antiretroviral agents as a potential approach for complete cure of AIDS. EXPERT OPINION Various approaches are exploited to enhance the drug delivery to the brain for various categories of drugs. However, very few have investigated on the delivery of antiretrovirals to the brain. Targeting antiretrovirals to CNS through oral/nasal routes along with oral/parenteral delivery of drug to the plasma can be a promising approach for an attempt to completely eradicate HIV reservoir and cure AIDS, after clinical trials. Further research is required to identify the exact location of the HIV reservoir in CNS and developing good animal models for evaluation of different newly developed formulations.
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Affiliation(s)
- Shweta Gupta
- a Department of Pharmaceutics, Ideal College of Pharmacy and Research , University of Mumbai , Mumbai, Maharashtra , India
| | - Rajesh Kesarla
- b Corporate Quality Assurance , Zydus Cadila , Ahmedabad , Gujarat , India
| | - Abdelwahab Omri
- c The Novel Drug & Vaccine Delivery Systems Facility, Department of Chemistry and Biochemistry , Laurentian University , Sudbury , ON , Canada
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Rehman A, Tong Q, Jafari SM, Assadpour E, Shehzad Q, Aadil RM, Iqbal MW, Rashed MM, Mushtaq BS, Ashraf W. Carotenoid-loaded nanocarriers: A comprehensive review. Adv Colloid Interface Sci 2020; 275:102048. [PMID: 31757387 DOI: 10.1016/j.cis.2019.102048] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 10/03/2019] [Accepted: 10/09/2019] [Indexed: 02/07/2023]
Abstract
Carotenoids retain plenty of health benefits and attracting much attention recently, but they have less resistance to processing stresses, easily oxidized and chemically unstable. Additionally, their application in food and pharmaceuticals are restricted due to some limitations such as poor bioavailability, less solubility and quick release. Nanoencapsulation techniques can be used to protect the carotenoids and to uphold their original characteristics during processing, storage and digestion, improve their physiochemical properties and enhance their health promoting effects. The importance of nanocarriers in foods and pharmaceuticals cannot be denied. This review comprehensively covers recent advances in nanoencapsulation of carotenoids with biopolymeric nanocarriers (polysaccharides and proteins), and lipid-based nanocarriers, their functionalities, aptness and innovative developments in preparation strategies. Furthermore, the present state of the art encapsulation of different carotenoids via biopolymeric and lipid-based nanocarriers have been enclosed and tabulated well. Nanoencapsulation has a vast range of applications for protection of carotenoids. Polysaccharides in combination with different proteins can offer a great avenue to achieve the desired formulation for encapsulation of carotenoids by using different nanoencapsulation strategies. In terms of lipid based nanocarriers, solid lipid nanoparticles and nanostructure lipid carriers are proving as the encouraging candidates for entrapment of carotenoids. Additionally, nanoliposomes and nanoemulsion are also promising and novel-vehicles for the protection of carotenoids against challenging aspects as well as offering an effectual controlled release on the targeted sites. In the future, further studies could be conducted for exploring the application of nanoencapsulated systems in food and gastrointestinal tract (GIT) for industrial applications.
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20
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Patel M, Shah R, Sawant K. Recent Advances in Drug Delivery Strategies for Improved Therapeutic Efficacy of Efavirenz. RECENT PATENTS ON NANOTECHNOLOGY 2020; 14:119-127. [PMID: 31738157 DOI: 10.2174/1872210513666191019103129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/26/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Efavirenz, an anti-HIV agent, has a noticeable place in the HAART regimen for the treatment and maintenance therapy of AIDS. However, its poor water solubility accounts for hindered absorption and bio-distribution upon administration. This results in its low and variable bioavailability. To circumvent these limitations, various novel formulations of Efavirenz have been investigated in order to mitigate its drawbacks and draw out its maximum therapeutic effect. METHODS Numerous formulations explored to overcome the drawbacks of Efavirenz include modified/ controlled-release tablets, solid dispersions, polymeric nanoparticles, dendrimers, surface-engineered nanoparticles and various other nanoformulations. Moreover, combinatorial formulations of Efavirenz with other Anti-HIV drugs have also been reported to overcome the problem of Drug-Resistance. RESULTS The nanoformulation based strategies, owing to their ability to provide controlled release profile and targeted drug delivery were found to augment bioavailability, therapeutic efficacy and reduce the side effects of the Efavirenz. CONCLUSION This review pivots around the challenges and recent advances in the delivery of Efavirenz with particular emphasis on novel formulations including its patents.
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Affiliation(s)
- Mitali Patel
- Maliba Pharmacy College, Uka Tarsadia University, Surat 394350, Gujarat, India
| | - Ruhi Shah
- Drug Delivery Research Laboratory, Shri G.H. Patel Pharmacy Building, Faculty of Pharmacy, The M. S. University of Baroda, Fatehgunj, Vadodara 390002, Gujarat, India
| | - Krutika Sawant
- Drug Delivery Research Laboratory, Shri G.H. Patel Pharmacy Building, Faculty of Pharmacy, The M. S. University of Baroda, Fatehgunj, Vadodara 390002, Gujarat, India
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21
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Sarma A, Das MK. Nose to brain delivery of antiretroviral drugs in the treatment of neuroAIDS. MOLECULAR BIOMEDICINE 2020; 1:15. [PMID: 34765998 PMCID: PMC7725542 DOI: 10.1186/s43556-020-00019-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 11/17/2020] [Indexed: 12/20/2022] Open
Abstract
NeuroAIDS (Neuro Acquired Immunodeficiency Syndrome) or HIV (Human Immunodeficiency Virus) associated neuronal abnormality is continuing to be a significant health issue among AIDS patients even under the treatment of combined antiretroviral therapy (cART). Injury and damage to neurons of the brain are the prime causes of neuroAIDS, which happens due to the ingress of HIV by direct permeation across the blood-brain barrier (BBB) or else via peripherally infected macrophage into the central nervous system (CNS). The BBB performs as a stringent barricade for the delivery of therapeutics drugs. The intranasal route of drug administration exhibits as a non-invasive technique to bypass the BBB for the delivery of antiretroviral drugs and other active pharmaceutical ingredients inside the brain and CNS. This method is fruitful for the drugs that are unable to invade the BBB to show its action in the CNS and thus erase the demand of systemic delivery and thereby shrink systemic side effects. Drug delivery from the nose to the brain/CNS takes very less time through both olfactory and trigeminal nerves. Intranasal delivery does not require the involvement of any receptor as it occurs by an extracellular route. Nose to brain delivery also involves nasal associated lymphatic tissues (NALT) and deep cervical lymph nodes. However, very little research has been done to explore the utility of nose to brain delivery of antiretroviral drugs in the treatment of neuroAIDS. This review focuses on the potential of nasal route for the effective delivery of antiretroviral nanoformulations directly from nose to the brain.
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Affiliation(s)
- Anupam Sarma
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam 786004 India.,Pratiksha Institute of Pharmaceutical Sciences, Guwahati, Assam 781026 India
| | - Malay K Das
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam 786004 India
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22
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Ma Y, Wang Q, Wang D, Huang J, Sun R, Mao X, Tian Y, Xia Q. Silica-Lipid Hybrid Microparticles as Efficient Vehicles
for Enhanced Stability and Bioaccessibility of Curcumin. Food Technol Biotechnol 2019; 57:319-330. [PMID: 31866745 PMCID: PMC6902299 DOI: 10.17113/ftb.57.03.19.6035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Curcumin is an active ingredient with multiple functions, but its application is often restricted due to its poor water solubility, weak stability, and consequently low bioaccessibility. Based on this, the aim of this work is to develop a new vehicle to overcome these restrictions. Here we developed a curcumin-loaded nanoemulsion and then curcumin-loaded silica-lipid hybrid microparticles through emulsification and vacuum drying, respectively. The loading of curcumin in the nanoemulsion and microparticles was (0.30±0.02) and (0.67±0.02) %, respectively. FTIR and XRD analyses of microparticles revealed that curcumin was encapsulated in porous, amorphous silica. In vitro antioxidant activities showed that the encapsulation would not affect the antioxidant activity of curcumin. In vitro simulated digestion indicated that nanoemulsion and microparticles had higher curcumin bioaccessibility than the control group. The storage stability of microparticles remained the same during 6 weeks in the dark at 4, 25 and 40 °C. Moreover, the microparticles had a better chemical stability than nanoemulsion under the light. The cell viability was over 80% when the concentration of nanocarriers was less than 45 μg/mL. Hence, the microparticles could be a promising means to load curcumin and improve its solubility, light stability and bioaccessibility.
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Affiliation(s)
- Yudi Ma
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, No.2, Sipailou Street, 210096 Nanjing, PR China.,National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, No. 2, Sipailou Street, 210096 Nanjing,
PR China.,Collaborative Innovation Center of Suzhou Nano Science and Technology, No. 150 Renai Road 215123 Suzhou, PR China
| | - Qiang Wang
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, No.2, Sipailou Street, 210096 Nanjing, PR China.,National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, No. 2, Sipailou Street, 210096 Nanjing,
PR China.,Collaborative Innovation Center of Suzhou Nano Science and Technology, No. 150 Renai Road 215123 Suzhou, PR China
| | - Dantong Wang
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, No.2, Sipailou Street, 210096 Nanjing, PR China.,National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, No. 2, Sipailou Street, 210096 Nanjing,
PR China.,Collaborative Innovation Center of Suzhou Nano Science and Technology, No. 150 Renai Road 215123 Suzhou, PR China
| | - Juan Huang
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, No.2, Sipailou Street, 210096 Nanjing, PR China.,National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, No. 2, Sipailou Street, 210096 Nanjing,
PR China.,Collaborative Innovation Center of Suzhou Nano Science and Technology, No. 150 Renai Road 215123 Suzhou, PR China
| | - Rui Sun
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, No.2, Sipailou Street, 210096 Nanjing, PR China.,National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, No. 2, Sipailou Street, 210096 Nanjing,
PR China
| | - Xinyu Mao
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, No.2, Sipailou Street, 210096 Nanjing, PR China.,National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, No. 2, Sipailou Street, 210096 Nanjing,
PR China
| | - Yuan Tian
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, No.2, Sipailou Street, 210096 Nanjing, PR China.,National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, No. 2, Sipailou Street, 210096 Nanjing,
PR China
| | - Qiang Xia
- School of Biological Science and Medical Engineering, State Key Laboratory of Bioelectronics, Southeast University, No.2, Sipailou Street, 210096 Nanjing, PR China.,National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, No. 2, Sipailou Street, 210096 Nanjing,
PR China.,Collaborative Innovation Center of Suzhou Nano Science and Technology, No. 150 Renai Road 215123 Suzhou, PR China
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23
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Karp F, Turino L, Estenoz D, Castro G, Islan G. Encapsulation of florfenicol by in situ crystallization into novel alginate-Eudragit RS® blended matrix for pH modulated release. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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24
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Kuplennik N, Lang K, Steinfeld R, Sosnik A. Folate Receptor α-Modified Nanoparticles for Targeting of the Central Nervous System. ACS APPLIED MATERIALS & INTERFACES 2019; 11:39633-39647. [PMID: 31532618 DOI: 10.1021/acsami.9b14659] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Effective and timely delivery of therapeutic agents from the systemic circulation to the central nervous system (CNS) is often precluded by the blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSFB). A new pathway of folate uptake mediated by folate receptor alpha (FRα, molecular weight of 28.29 kg mol-1) occurring in various epithelial cells of the CNS (e.g., choroid plexus) was described. Aiming to investigate this mechanism for the delivery of nanomedicines to the CNS, in this work, we initially produced nanoparticles (NPs) made of a highly hydrophobic poly(ethylene glycol)-b-poly(ε-caprolactone) (PEG-b-PCL) block copolymer functionalized with an amine moiety in the edge of the PEG block by a simple nanoprecipitation method. Hydrophilic PEG blocks migrated to the NP surface during formation, exposing primary amine groups that were used to conjugate the targeting ligand, FRα. The size of the NPs was in the 58-98 nm range and standard deviation (S.D., a measure of the size population peak width) of 26-41 nm, as measured by dynamic light scattering (DLS). The FRα conjugation yield ranged between 50% and 75% (determined indirectly by the bicinchoninic acid protein assay). Pristine and FRα-modified NPs showed good compatibility with primary human choroid plexus epithelial cells (HCPEpiCs). The uptake of FRα-conjugated NPs by HCPEpiCs was qualitatively evaluated in vitro using inverted optical fluorescence and confocal microscopy. FRα-modified NPs were internalized by HCPEpiCs to a greater extent than the unmodified counterparts. Then, their permeability was characterized in standard and inverted HCPEpiC monolayers. In both cases, NPs surface modified with the FRα and complexed to folic acid (FA) showed significantly higher apparent permeability coefficient (Papp) values than the pristine ones. Finally, the biodistribution of unmodified and FRα-FA-modified NPs following intravenous (i.v.) administration was compared in ICR mice. Results indicated that conjugation of the FRα-FA complex to the NP surface promotes higher accumulation in the brain, highlighting the promise of FRα-FA-modified NPs to serve as a platform for the targeting of active molecules to the CNS from the systemic circulation.
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Affiliation(s)
- Nataliya Kuplennik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering , Technion-Israel Institute of Technology , 3200003 Haifa , Israel
| | - Kristina Lang
- Clinic for Neurology , University Children Hospital Zurich , 8032 Zurich , Switzerland
| | - Robert Steinfeld
- Clinic for Neurology , University Children Hospital Zurich , 8032 Zurich , Switzerland
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering , Technion-Israel Institute of Technology , 3200003 Haifa , Israel
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25
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Dalpiaz A, Fogagnolo M, Ferraro L, Beggiato S, Hanuskova M, Maretti E, Sacchetti F, Leo E, Pavan B. Bile salt-coating modulates the macrophage uptake of nanocores constituted by a zidovudine prodrug and enhances its nose-to-brain delivery. Eur J Pharm Biopharm 2019; 144:91-100. [PMID: 31521715 DOI: 10.1016/j.ejpb.2019.09.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 08/26/2019] [Accepted: 09/08/2019] [Indexed: 02/07/2023]
Abstract
We have previously demonstrated that the ester conjugation of zidovudine (AZT) with ursodeoxycholic acid (UDCA) allows to obtain a prodrug (U-AZT) which eludes the active efflux transporters (AET). This allows the prodrug to more efficiently permeates and remains in murine macrophages than the parent compound. Here we demonstrate that U-AZT can be formulated, by a nanoprecipitation method, as nanoparticle cores coated by bile acid salt (taurocholate or ursodeoxycholate) corona, without any other excipients. The U-AZT nanoparticles appeared spherical with a mean diameter of ∼200 nm and a zeta potential of ∼-55 mV. During the incubation (5 h) in fetal bovine serum, the ursodeoxycholate-coated nanoparticle size did not change. Differently, taurocholate-coated particle size was firstly reduced and then increased up to 800 µm, thus suggesting the high aptitude of these nanoparticles to interact with serum proteins. The in vitro uptake of taurocholate coated particles by murine macrophages was strongly higher than that of ursodeoxycholate-coated particles or free U-AZT (∼500% and ∼7000%, respectively). AZT was also detected in macrophages following the prodrug uptake, with the greatest amounts observed after the taurocholate-coated nanoparticle incubation. As macrophages in the subarachnoid spaces of cerebrospinal fluid (CSF) constitute one of the most unreachable HIV sanctuaries in the body, we also tested the ability of taurocholate-coated nanoparticles (i.e., nanoparticles highly internalized by macrophages) to reach them after their nasal administration in the presence or absence of chitosan. The results indicate that chitosan allowed to obtain a relatively high uptake (up to 4 µg/ml) of U-AZT in CSF. Taking into account that chitosan may promote the direct brain nanoparticle uptake, these findings can be considered an initial step toward the in vivo targeting of the subarachnoid macrophages by U-AZT prodrug.
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Affiliation(s)
- Alessandro Dalpiaz
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara 19, I-44121 Ferrara, Italy.
| | - Marco Fogagnolo
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Via Fossato di Mortara 19, I-44121 Ferrara, Italy.
| | - Luca Ferraro
- Department of Life Sciences and Biotechnology, University of Ferrara and LTTA Center, Via L. Borsari 46, I-44121 Ferrara, Italy.
| | - Sarah Beggiato
- Department of Life Sciences and Biotechnology, University of Ferrara and LTTA Center, Via L. Borsari 46, I-44121 Ferrara, Italy.
| | - Miriam Hanuskova
- "Enzo Ferrari" Engineering Department, University of Modena and Reggio Emilia, Via Pietro Vivarelli 10, I-41125 Modena, Italy.
| | - Eleonora Maretti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, I-41125 Modena, Italy.
| | - Francesca Sacchetti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, I-41125 Modena, Italy.
| | - Eliana Leo
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, I-41125 Modena, Italy.
| | - Barbara Pavan
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, Via L. Borsari 46, 44121 Ferrara, Italy.
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26
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Ajiboye AL, Trivedi V, Mitchell JC. Preparation of polycaprolactone nanoparticles via supercritical carbon dioxide extraction of emulsions. Drug Deliv Transl Res 2019; 8:1790-1796. [PMID: 28828703 PMCID: PMC6280808 DOI: 10.1007/s13346-017-0422-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Polycaprolactone (PCL) nanoparticles were produced via supercritical fluid extraction of emulsions (SFEE) using supercritical carbon dioxide (scCO2). The efficiency of the scCO2 extraction was investigated and compared to that of solvent extraction at atmospheric pressure. The effects of process parameters including polymer concentration (0.6-10% w/w in acetone), surfactant concentration (0.07 and 0.14% w/w) and polymer-to-surfactant weight ratio (1:1-16:1 w/w) on the particle size and surface morphology were also investigated. Spherical PCL nanoparticles with mean particle sizes between 190 and 350 nm were obtained depending on the polymer concentration, which was the most important factor where increase in the particle size was directly related to total polymer content in the formulation. Nanoparticles produced were analysed using dynamic light scattering and scanning electron microscopy. The results indicated that SFEE can be applied for the preparation of PCL nanoparticles without agglomeration and in a comparatively short duration of only 1 h.
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Affiliation(s)
- Adejumoke Lara Ajiboye
- Faculty of Engineering and Science, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
| | - Vivek Trivedi
- Faculty of Engineering and Science, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK.
| | - John C Mitchell
- Faculty of Engineering and Science, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK
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27
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Jara MO, Catalan-Figueroa J, Landin M, Morales JO. Finding key nanoprecipitation variables for achieving uniform polymeric nanoparticles using neurofuzzy logic technology. Drug Deliv Transl Res 2019; 8:1797-1806. [PMID: 29288356 DOI: 10.1007/s13346-017-0446-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nanoprecipitation is a simple and fast method to produce polymeric nanoparticles (Np); however, most applications require filtration or another separation technique to isolate the nanosuspension from aggregates or polydisperse particle production. In order to avoid variability introduced by these additional steps, we report here a systematic study of the process to yield monomodal and uniform Np production with the nanoprecipitation method. To further identify key variables and their interactions, we used artificial neural networks (ANN) to investigate the multiple variables which influence the process. In this work, a polymethacrylate derivative was used for Np (NpERS) and a database with several formulations and conditions was developed for the ANN model. The resulting ANN model had a high predictability (> 70%) for NpERS characteristics measured (mean size, PDI, zeta potential, and number of particle populations). Moreover, the model identified production variables leading to polymer supersaturation, such as mixing time and turbulence, as key in achieving monomodal and uniform NpERS in one production step. Polymer concentration and type of solvent, modifiers of polymer diffusion and supersaturation, were also shown to control NpERS characteristics. The ANN study allowed the identification of key variables and their interactions and resulted in a predictive model to study the NpERS production by nanoprecipitation. In turn, we have achieved an optimized method to yield uniform NpERS which could pave way for polymeric nanoparticle production methods with potential in biological and drug delivery applications.
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Affiliation(s)
- Miguel O Jara
- Department of Pharmaceutical Science and Technology, School of Chemical and Pharmaceutical Sciences, University of Chile, Santos Dumont 964, 4to piso, Of. 09, Independencia, 8380494, Santiago, Chile
| | - Johanna Catalan-Figueroa
- Department of Pharmaceutical Science and Technology, School of Chemical and Pharmaceutical Sciences, University of Chile, Santos Dumont 964, 4to piso, Of. 09, Independencia, 8380494, Santiago, Chile
| | - Mariana Landin
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago, 15782, Santiago de Compostela, Spain
| | - Javier O Morales
- Department of Pharmaceutical Science and Technology, School of Chemical and Pharmaceutical Sciences, University of Chile, Santos Dumont 964, 4to piso, Of. 09, Independencia, 8380494, Santiago, Chile. .,Advanced Center for Chronic Diseases (ACCDiS), 8380494, Santiago, Chile. .,Pharmaceutical Biomaterial Research Group, Department of Health Sciences, Luleå University of Technology, 97187, Luleå, Sweden.
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28
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Pereira MP, de Gomes MG, Izoton JC, Nakama KA, Dos Santos RB, Pinto Savall AS, Ramalho JB, Roman SS, Luchese C, Cibin FW, Pinton S, Haas SE. Cationic and anionic unloaded polymeric nanocapsules: Toxicological evaluation in rats shows low toxicity. Biomed Pharmacother 2019; 116:109014. [PMID: 31146108 DOI: 10.1016/j.biopha.2019.109014] [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: 03/28/2019] [Revised: 05/05/2019] [Accepted: 05/21/2019] [Indexed: 01/23/2023] Open
Abstract
The experimental design aiming at evaluating the performance of drugs nanoencapsulated involves inclusion of a formulation without drug (unloaded). This formulation has sometimes presented per se effect. In this sense, we sought to evaluate the toxicity of unloaded polymeric nanocapsules (NCs) with different surfaces (cationic and anionic) in male Wistar rats in male Wistar rats. The physicochemical characterization of NCs with different surfaces: polysorbate 80 (P80), polyethylene glycol (PEG), eudragit ®RS 100 (EUD) and chitosan (CS) was performed. Rats were treated with unloaded NCs (P80, PEG, EUD and CS surfaces) daily for 14 days per oral route. 24 h of last treatment, animals were euthanized and organs were removed and weighted. After, biochemical determinations were performed. In general, NCs-surfaces did not cause alterations in body weight, weight of organs and histopathological analysis. PEG-surface NCs did not generate hepatotoxicity. In investigation of lipid profile, the surface with P80 changed TC and HDL-C levels. Besides that, all NCs did not alter oxidative stress markers in organs studied (TBARS and Reactive Species) and CS-surface presented antioxidant activity in kidney. This study demonstrated that NCs-surfaces depending on their physicochemical characteristics had low or no toxicity.
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Affiliation(s)
- Muriel Pando Pereira
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, Campus Uruguaiana BR 472, Km 7, 97500-970, Uruguaiana, RS, Brazil
| | - Marcelo Gomes de Gomes
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, Campus Uruguaiana BR 472, Km 7, 97500-970, Uruguaiana, RS, Brazil
| | - Jessica Cristina Izoton
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, Campus Uruguaiana BR 472, Km 7, 97500-970, Uruguaiana, RS, Brazil
| | - Kelly Ayumi Nakama
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, Campus Uruguaiana BR 472, Km 7, 97500-970, Uruguaiana, RS, Brazil
| | - Renata Bem Dos Santos
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, Campus Uruguaiana BR 472, Km 7, 97500-970, Uruguaiana, RS, Brazil
| | - Anne Suely Pinto Savall
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, Brazil
| | - Juliana Bernera Ramalho
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, Brazil
| | - Silvane Souza Roman
- Universidade Regional Integrada do Alto Uruguai e das Missões, Campus Erechim, Erechim, Brazil
| | - Cristiane Luchese
- Programa de Pós-Graduação em Bioquímica e Bioprospecção, Laboratório de Pesquisa em Farmacologia Bioquímica, Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Francielli Weber Cibin
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, Brazil
| | - Simone Pinton
- Programa de Pós-Graduação em Bioquímica, Universidade Federal do Pampa, UNIPAMPA, Uruguaiana, Brazil
| | - Sandra Elisa Haas
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Pampa, Campus Uruguaiana BR 472, Km 7, 97500-970, Uruguaiana, RS, Brazil.
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29
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Lopes LQS, de Almeida Vaucher R, Giongo JL, Gündel A, Santos RCV. Characterisation and anti-biofilm activity of glycerol monolaurate nanocapsules against Pseudomonas aeruginosa. Microb Pathog 2019; 130:178-185. [PMID: 30862561 DOI: 10.1016/j.micpath.2019.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 03/03/2019] [Accepted: 03/06/2019] [Indexed: 01/20/2023]
Abstract
Pseudomonas aeruginosa is a ubiquitous microorganism that commonly causes hospital-acquired infections, including pneumonia, bloodstream and urinary tract infections and it is well known for chronically colonising the respiratory tract of patients with cystic fibrosis, causing severe intermittent exacerbation of the condition. P. aeruginosa may appear in the free form cell but also grows in biofilm communities adhered to a surface. An alternative to conventional antimicrobial agents are nanoparticles that can act as carriers for antibiotics and other drugs. In this context, the study aimed to characterise and verify the anti-biofilm potential of GML Nanocapsules against P. aeruginosa. The nanocapsules showed a mean diameter of 190.7 nm, polydispersion index of 0.069, the zeta potential of -23.3 mV. The microdilution test showed a MIC of 62.5 μg/mL to GML and 15.62 μg/mL to GML Nanocapsules. The anti-biofilm experiments demonstrated the significant reduction of biomass, proteins, polysaccharide and viable P. aeruginosa in biofilm treated with GML Nanocapsules while the free GML did not cause an effect. The AFM images showed a decrease in a biofilm which received GML. The positive results suggest an alternative for the public health trouble related to infections associated with biofilm.
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Affiliation(s)
- Leonardo Quintana Soares Lopes
- Post Graduate Program in Nanosciences, Universidade Franciscana, Santa Maria, Brazil; Microbiology and Parasitology Department, Health Sciences Center, Universidade Federal de Santa Maria, Santa Maria, Brazil.
| | - Rodrigo de Almeida Vaucher
- Laboratory of Research in Biochemistry and Molecular Biology of Microorganisms, Post Graduate Program in Biochemistry and Bioprospecting, Universidade Federal de Pelotas, Capão Do Leão, Brazil
| | | | | | - Roberto Christ Vianna Santos
- Post Graduate Program in Nanosciences, Universidade Franciscana, Santa Maria, Brazil; Microbiology and Parasitology Department, Health Sciences Center, Universidade Federal de Santa Maria, Santa Maria, Brazil
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30
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Development and characterization of benznidazole nano- and microparticles: A new tool for pediatric treatment of Chagas disease? Colloids Surf B Biointerfaces 2019; 177:169-177. [PMID: 30731393 DOI: 10.1016/j.colsurfb.2019.01.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/11/2019] [Accepted: 01/19/2019] [Indexed: 12/31/2022]
Abstract
Benznidazole (BNZ) is the drug of choice for the treatment of Chagas disease in many countries. However, its low water solubility produces low and/or variable oral bioavailability. Thus, the aim of this work was to formulate micro- and nanoparticles based on Eudragit® RS PO and Eudragit® RL PO as a convenient approach to increase the dissolution rate of BNZ. The microparticles were obtained by means of spray-drying process while the nanoparticles were prepared through the nanoprecipitation technique and further freeze-drying. The results indicated that nanoparticles were obtained in 86% yield while microparticles were obtained in 68% yield. In both cases, the encapsulation efficiency of particles was greater than 78% while drug loading capacity was nearly 24% w/w and 18% w/w, after spray-drying and freeze-drying procedures, respectively. Images of scanning electron microscopy showed that the particles obtained by spray-drying and freeze-drying were in the micrometer and nanometer scale, respectively. FT-IR spectra of BNZ-loaded particles obtained by both methods showed characteristic bands of BNZ confirming that part of drug remained on their surface. Thermal analysis revealed that the drug crystallinity after both methods decreased. Physical stability evaluation of the nanoparticles confirmed that Pluronic® F68 was suitable to keep the particles size in a range of 300 nm after 70 days storage at 4 ± 2 °C. In-vitro release studies showed increased dissolution rate of drug from the particles obtained by both methods respect to untreated BNZ. The kinetics of drug release in acid media followed the Higuchi kinetics indicating drug diffusion mechanism from particles.
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31
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Dalcin AJF, Vizzotto BS, Bochi GV, Guarda NS, Nascimento K, Sagrillo MR, Moresco RN, Schuch AP, Ourique AF, Gomes P. Nanoencapsulation of the flavonoid dihydromyricetin protects against the genotoxicity and cytotoxicity induced by cationic nanocapsules. Colloids Surf B Biointerfaces 2019; 173:798-805. [DOI: 10.1016/j.colsurfb.2018.10.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/11/2018] [Accepted: 10/24/2018] [Indexed: 02/06/2023]
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32
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Taghipour YD, Bahramsoltani R, Marques AM, Naseri R, Rahimi R, Haratipour P, Panah AI, Farzaei MH, Abdollahi M. A systematic review of nano formulation of natural products for the treatment of inflammatory bowel disease: drug delivery and pharmacological targets. Daru 2018; 26:229-239. [PMID: 30382546 PMCID: PMC6279665 DOI: 10.1007/s40199-018-0222-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/10/2018] [Indexed: 12/17/2022] Open
Abstract
Inflammatory bowel diseases (IBD), which is classified into Crohn's disease and ulcerative colitis, are among chronic gastrointestinal diseases with unknown pathogenesis. Diverse strategies have been applied for the treatment of this chronic disease. However, selective and site-specific routes of drug delivery to the inflamed location of the colon remain of high importance. Consequently, the application and effects of natural products in the form of nanoformulation and stimuli responsive nanoparticles as a novel strategy for the treatment of IBD are discussed in this review article. This approach may potentially overcome some complications that are associated with conventional means of colon drug delivery. Meanwhile, in vitro and in vivo studies pave the way for understanding of the mechanism that lies behind this chronic relapsing disease and potentially more effective treatment. Graphical abstract ᅟ.
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Affiliation(s)
- Yasamin Davatgaran Taghipour
- Department of Medical Nanotechnology, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- PhytoPharmacology Interest Group (PPIG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roodabeh Bahramsoltani
- PhytoPharmacology Interest Group (PPIG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
- Department of Pharmacy in Persian Medicine, School of Persian Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - André M. Marques
- Oswaldo Cruz Foundation (FIOCRUZ), Institute of Technology in Pharmaceuticals (Farmanguinhos), Rio de Janeiro, RJ Brazil
| | - Rozita Naseri
- Internal Medicine Department, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Roja Rahimi
- Department of Pharmacy in Persian Medicine, School of Persian Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Pouya Haratipour
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
- PhytoPharmacology Interest Group (PPIG), Universal Scientific Education and Research Network (USERN), Los Angeles, CA USA
| | - Amin Iran Panah
- Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group, The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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Zhou H, Qian H. Preparation and characterization of pH-sensitive nanoparticles of budesonide for the treatment of ulcerative colitis. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:2601-2609. [PMID: 30174414 PMCID: PMC6110634 DOI: 10.2147/dddt.s170676] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective The aim of this study was to develop pH sensitive nanoparticles of budesonide for the treatment of ulcerative colitis. Methods The NPs system was characterized by the transmission electron microscopy (TEM), particle size, drug loading and encapsulation efficiency. In addition, in vitro drug release prop-erties and pharmacokinetics were also investigated in detail. The optimized formulation was examined for its in-vivo targeting potential using 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced colitis in a rat model. Results Dynamic light-scattering results showed that the particle size of budesonide-Eudragit S100/poly(lactic-co-glycolic acid) nanoparticles was around 110.5 nm, with a polydispersity index of 0.098. Transmission electron microscopy images showed that BUD-ES100/PLGA NPs were spherical with uniform size and relatively smooth surfaces. In vitro release showed that BUD-ES100/PLGA NPs required minimal release of drugs during its transit in the stomach and the upper small intestine to ensure that a maximum dose reached the colon. After the pharma-codynamic treatment, the myeloperoxidase value of BUD-ES100/PLGA NPs was close to the normal group. The histopathological examination of rectum showed that no sign of damages such as epithelial necrosis and sloughing epithelial cells was detected. Conclusion Our findings suggested that BUD-ES100/PLGA NPs were a promising alternative to single pH-dependent systems for colitis therapy.
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Affiliation(s)
- Hong Zhou
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou 215006, People's Republic of China, .,Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, People's Republic of China
| | - Haixin Qian
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou 215006, People's Republic of China,
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Zhang G, Zhang J. Enhanced oral bioavailability of EGCG using pH-sensitive polymeric nanoparticles: characterization and in vivo investigation on nephrotic syndrome rats. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:2509-2518. [PMID: 30147298 PMCID: PMC6097509 DOI: 10.2147/dddt.s172919] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Objective Chronic kidney disease (CKD) is characterized by progressive loss of renal functions. At present, there are only limited therapeutic strategies to slow down the progress of CKD and there is an urgent need to develop new therapeutic strategies to treat CKD patients. Numerous research evidence supports the potential role of EGCG in the renal protection of CKD. However, the clinical use is still limited due to the poor oral bioavailability. The aim of this study was to develop pH-sensitive polymeric nanoparticles of EGCG to improve this deficiency. Materials and methods EGCG-loaded nanoparticles (EGCG NPs) were prepared by an improved emulsion evaporation method. The formulation prepared was in spherical with uniform sizes, high encapsulation efficiencies and drug loading. The therapeutic efficacy of EGCG NPs on chronic kidney disease was investigated on model of rat Nephrotic syndrome by measuring urinary protein excretion and kidney pathology score. Results The mean particle size was found to be 91.3±0.8 nm and the encapsulation efficiency% and drug loading% of the formulation were 80.8%±1.6% and 6.3%±1.4%, respectively. The powder X-ray diffraction and differential scanning calorimetry of EGCG NPs showed that EGCG existed in amorphous form in NPs. The release of EGCG from NPs exhibited the lower burst release at pH 1.2 (<10%) and with the increase of pH value, the release of EGCG also gradually increased. During the observation period (24 hours), the total release amount was almost 68%. EGCG NPs could significantly modify the pharmacokinetic profile and increase the bioavailability of EGCG by more than 2.4-fold in comparison with the EGCG powder group. At the end of the fourth and sixth week, proteinuria excretion of nephrotic syndrome rats treated with EGCG NPs was significantly lower than those treated with EGCG powder, and kidney pathology scores in EGCG NPs treated rats were also significantly lower than EGCG powder treated rats. Conclusion The results of pharmacodynamics showed that compared with EGCG powder treatment group, EGCG NPs treatment group had better efficacy and reduce kidney damage.
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Affiliation(s)
- Guojuan Zhang
- Department of Nephrology, Beijing Tongren Hospital, Capital Medical University, Beijing, People's Republic of China,
| | - Jianfang Zhang
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People's Republic of China
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Monroe M, Flexner C, Cui H. Harnessing nanostructured systems for improved treatment and prevention of HIV disease. Bioeng Transl Med 2018; 3:102-123. [PMID: 30065966 PMCID: PMC6063869 DOI: 10.1002/btm2.10096] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 12/12/2022] Open
Abstract
Combination antiretroviral therapy effectively controls human immunodeficiency virus (HIV) viral replication, delaying the progression to acquired immune deficiency syndrome and improving and extending quality of life of patients. However, the inability of antiretroviral therapeutics to target latent virus and their poor penetration of viral reserve tissues result in the need for continued treatment for the life of the patient. Side effects from long-term antiretroviral use and the development of drug resistance due to patient noncompliance are also continuing problems. Nanostructured systems of antiretroviral therapeutics have the potential to improve targeted delivery to viral reservoirs, reduce drug toxicity, and increase dosing intervals, thereby improving treatment outcomes and enhancing patient adherence. Despite these advantages, very few nanostructured antiretroviral delivery systems have made it to clinical trials due to challenges in preclinical and clinical development. In this context, we review the current challenges in HIV disease management, and the recent progress in leveraging the unique performance of nanostructured systems in therapeutic delivery for improved treatment and prevention of this incurable human disease.
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Affiliation(s)
- Maya Monroe
- Dept. of Chemical and Biomolecular Engineering The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Institute for NanoBioTechnology The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218
| | - Charles Flexner
- Div. of Clinical Pharmacology and Infectious Diseases Johns Hopkins University School of Medicine and Bloomberg School of Public Health Baltimore MD 21205
| | - Honggang Cui
- Dept. of Chemical and Biomolecular Engineering The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Institute for NanoBioTechnology The Johns Hopkins University, 3400 N Charles Street Baltimore MD 21218.,Dept. of Oncology, Sidney Kimmel Comprehensive Cancer Center The Johns Hopkins University School of Medicine Baltimore MD 21205.,Center for Nanomedicine The Wilmer Eye Institute, The Johns Hopkins University School of Medicine Baltimore MD 21231
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Dalpiaz A, Pavan B. Nose-to-Brain Delivery of Antiviral Drugs: A Way to Overcome Their Active Efflux? Pharmaceutics 2018; 10:pharmaceutics10020039. [PMID: 29587409 PMCID: PMC6027266 DOI: 10.3390/pharmaceutics10020039] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 03/16/2018] [Accepted: 03/19/2018] [Indexed: 02/06/2023] Open
Abstract
Although several viruses can easily infect the central nervous system (CNS), antiviral drugs often show dramatic difficulties in penetrating the brain from the bloodstream since they are substrates of active efflux transporters (AETs). These transporters, located in the physiological barriers between blood and the CNS and in macrophage membranes, are able to recognize their substrates and actively efflux them into the bloodstream. The active transporters currently known to efflux antiviral drugs are P-glycoprotein (ABCB1 or P-gp or MDR1), multidrug resistance-associated proteins (ABCC1 or MRP1, ABCC4 or MRP4, ABCC5 or MRP5), and breast cancer resistance protein (ABCG2 or BCRP). Inhibitors of AETs may be considered, but their co-administration causes serious unwanted effects. Nasal administration of antiviral drugs is therefore proposed in order to overcome the aforementioned problems, but innovative devices, formulations (thermoreversible gels, polymeric micro- and nano-particles, solid lipid microparticles, nanoemulsions), absorption enhancers (chitosan, papaverine), and mucoadhesive agents (chitosan, polyvinilpyrrolidone) are required in order to selectively target the antiviral drugs and, possibly, the AET inhibitors in the CNS. Moreover, several prodrugs of antiretroviral agents can inhibit or elude the AET systems, appearing as interesting substrates for innovative nasal formulations able to target anti-Human Immunodeficiency Virus (HIV) agents into macrophages of the CNS, which are one of the most important HIV Sanctuaries of the body.
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Affiliation(s)
- Alessandro Dalpiaz
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Barbara Pavan
- Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
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Nanoparticulate delivery systems for alkyl gallates: Influence of the elaboration process on particle characteristics, drug encapsulation and in-vitro release. Colloids Surf B Biointerfaces 2018; 162:351-361. [DOI: 10.1016/j.colsurfb.2017.11.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 11/18/2017] [Accepted: 11/20/2017] [Indexed: 01/03/2023]
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Gomes GS, Maciel TR, Piegas EM, Michels LR, Colomé LM, Freddo RJ, Ávila DSD, Gundel A, Haas SE. Optimization of Curcuma Oil/Quinine-Loaded Nanocapsules for Malaria Treatment. AAPS PharmSciTech 2018; 19:551-564. [PMID: 28875471 DOI: 10.1208/s12249-017-0854-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/30/2017] [Indexed: 11/30/2022] Open
Abstract
Quinine, a treatment used in chloroquine-resistant falciparum malaria, was loaded into poly(ɛ-caprolactone) or Eudragit® RS100 nanocapsules using Curcuma oil as the oil-based core. Until now, the effect of cationic nanocapsules on malaria has not been reported. A 24 factorial design was adopted using, as independent variables, the concentration of Curcuma oil, presence of quinine, type of polymer, and aqueous surfactant. Diameter, zeta potential, and pH were the responses studied. The formulations were also evaluated for drug content, encapsulation efficiency, photostability, and antimalarial activity against Plasmodium berghei-infected mice. The type of polymer influenced all of the responses studied. Quinine-loaded Eudragit® RS100 (F13) and PCL nanocapsules (F9), both with polysorbate 80 coating, showed nanometric particle size, positive zeta potential, neutral pH, high drug content, and quinine photoprotection ability; thus, these nanocapsules were selected for in vivo tests. Both formulations showed lower levels of parasitemia from the beginning of the experiment (5.78 ± 3.60 and 4.76 ± 3.46% for F9 and F13, respectively) and highest survival mean time (15.3 ± 2.0 and 14.9 ± 5.6 days for F9 and F13, respectively). F9 and F13 showed significant survival curve compared to saline, thus demonstrating that nanoencapsulation improved bioefficacy of QN and co-encapsulated curcuminoids, regardless of the surface charge.
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Raj PM, Raj R, Kaul A, Mishra AK, Ram A. Biodistribution and targeting potential assessment of mucoadhesive chitosan nanoparticles designed for ulcerative colitis via scintigraphy. RSC Adv 2018; 8:20809-20821. [PMID: 35542340 PMCID: PMC9080856 DOI: 10.1039/c8ra01898g] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/08/2018] [Indexed: 12/13/2022] Open
Abstract
In the present investigation we have prepared and characterized curcumin (CN)-containing chitosan nanoparticles (CS-NPs) coated with Eudragit FS 30D for colon-specific drug delivery for treatment of ulcerative colitis. Methods: CS-NPs were prepared by ionic gelation using tripolyphosphate. To specify pH sensitive delivery, CS–CN-NPs were coated with Eudragit FS 30D by using a solvent evaporation method. Different process parameters were evaluated, and the optimized formulation was characterized by particle size, size distribution, zeta potential and encapsulation efficiency before lyophilization. The lyophilized product was further subjected to Fourier-transform infrared spectroscopy, and particle morphology and in vitro drug release in different media were studied. Results: the kinetics of in vitro drug release from the CS–CN-NPs revealed sustained release behaviour of the developed carriers. In vivo biodistribution study by gamma-scintigraphy showed good accumulation of the developed nanocarriers in the colonic region. Conclusion: sustained and pH stimulated delivery of CN to the colon was successfully attained via coating of CS-NPs with Eudragit FS 30D to circumvent poor absorption and availability of CN. In the present investigation we have prepared and characterized curcumin (CN)-containing chitosan nanoparticles (CS-NPs) coated with Eudragit FS 30D for colon-specific drug delivery for treatment of ulcerative colitis.![]()
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Affiliation(s)
- Pooja Mongia Raj
- Institute of Pharmaceutical Sciences
- Guru Ghasidas Vishwavidyalaya
- Bilaspur
- India
| | - Rakesh Raj
- Institute of Pharmaceutical Sciences
- Guru Ghasidas Vishwavidyalaya
- Bilaspur
- India
| | - Ankur Kaul
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences (INMAS)
- New Delhi 110054
- India
| | - Anil K. Mishra
- Division of Cyclotron and Radiopharmaceutical Sciences
- Institute of Nuclear Medicine and Allied Sciences (INMAS)
- New Delhi 110054
- India
| | - Alpana Ram
- Institute of Pharmaceutical Sciences
- Guru Ghasidas Vishwavidyalaya
- Bilaspur
- India
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Paulo F, Santos L. Design of experiments for microencapsulation applications: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:1327-1340. [PMID: 28532010 DOI: 10.1016/j.msec.2017.03.219] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/07/2017] [Accepted: 03/23/2017] [Indexed: 02/07/2023]
Abstract
Microencapsulation techniques have been intensively explored by many research sectors such as pharmaceutical and food industries. Microencapsulation allows to protect the active ingredient from the external environment, mask undesired flavours, a possible controlled release of compounds among others. The purpose of this review is to provide a background of design of experiments in microencapsulation research context. Optimization processes are required for an accurate research in these fields and therefore, the right implementation of micro-sized techniques at industrial scale. This article critically reviews the use of the response surface methodologies in pharmaceutical and food microencapsulation research areas. A survey of optimization procedures in the literature, in the last few years is also presented.
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Affiliation(s)
- Filipa Paulo
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Lúcia Santos
- LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
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Salatin S, Barar J, Barzegar-Jalali M, Adibkia K, Kiafar F, Jelvehgari M. Development of a nanoprecipitation method for the entrapment of a very water soluble drug into Eudragit RL nanoparticles. Res Pharm Sci 2017; 12:1-14. [PMID: 28255308 PMCID: PMC5333474 DOI: 10.4103/1735-5362.199041] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Rivastigmine hydrogen tartrate (RHT), one of the potential cholinesterase inhibitors, has received great attention as a new drug candidate for the treatment of Alzheimer's disease. However, the bioavailability of RHT from the conventional pharmaceutical forms is low because of the presence of the blood brain barrier. The main aim of the present study was to prepare positively charged Eudragit RL 100 nanoparticles as a model scaffold for providing a sustained release profile for RHT. The formulations were evaluated in terms of particle size, zeta potential, surface morphology, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and differential scanning calorimetry (DSC). Drug entrapment efficiency and in vitro release properties of lyophilized nanoparticles were also examined. The resulting formulations were found to be in the size range of 118 nm to 154 nm and zeta potential was positive (+22.5 to 30 mV). Nanoparticles showed the entrapment efficiency from 38.40 ± 8.94 to 62.00 ± 2.78%. An increase in the mean particle size and the entrapment efficiency was observed with an increase in the amount of polymer. The FTIR, XRD, and DSC results ruled out any chemical interaction between the drug and Eudragit RL100 polymer. RHT nanoparticles containing low ratio of polymer to drug (4:1) presented a faster drug release and on the contrary, nanoparticles containing high ratio of polymer to drug (10:1) were able to give a more sustained release of the drug. The study revealed that RHT nanoparticles were capable of releasing the drug in a prolonged period of time and increasing the drug bioavailability.
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Affiliation(s)
- Sara Salatin
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Science, Tabriz, I.R. Iran; Student Research Committee, Tabriz University of Medical Science, Tabriz, I.R. Iran
| | - Jaleh Barar
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Science, Tabriz, I.R. Iran; Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Mohammad Barzegar-Jalali
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Khosro Adibkia
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, I.R. Iran; Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
| | - Farhad Kiafar
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, I.R. Iran; Zahravi pharmaceutical company, Tabriz, I.R. Iran
| | - Mitra Jelvehgari
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, I.R. Iran; Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, I.R. Iran
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Wang Q, Hu C, Qian A, Liu T, Zhang H, Zhang Y, Xia Q. Enhanced oral bioavailability of quercetin by a new non‐aqueous self‐double‐emulsifying drug delivery system. EUR J LIPID SCI TECH 2016. [DOI: 10.1002/ejlt.201600167] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Qiang Wang
- School of Biological Science and Medical EngineeringState Key Laboratory of BioelectronicsSoutheast UniversityNanjingP. R. China
- Collaborative Innovation Center of Suzhou Nano Science and TechnologySuzhouP. R. China
| | - Caibiao Hu
- School of Biological Science and Medical EngineeringState Key Laboratory of BioelectronicsSoutheast UniversityNanjingP. R. China
- Collaborative Innovation Center of Suzhou Nano Science and TechnologySuzhouP. R. China
| | - Airui Qian
- School of Biological Science and Medical EngineeringState Key Laboratory of BioelectronicsSoutheast UniversityNanjingP. R. China
- Collaborative Innovation Center of Suzhou Nano Science and TechnologySuzhouP. R. China
| | - Tian Liu
- Department of PharmacyCollege of MedicineXi'an Jiaotong UniversityXi'anP. R. China
| | - Hong Zhang
- School of Biological Science and Medical EngineeringState Key Laboratory of BioelectronicsSoutheast UniversityNanjingP. R. China
- Collaborative Innovation Center of Suzhou Nano Science and TechnologySuzhouP. R. China
| | - Yali Zhang
- School of Biological Science and Medical EngineeringState Key Laboratory of BioelectronicsSoutheast UniversityNanjingP. R. China
- Collaborative Innovation Center of Suzhou Nano Science and TechnologySuzhouP. R. China
| | - Qiang Xia
- School of Biological Science and Medical EngineeringState Key Laboratory of BioelectronicsSoutheast UniversityNanjingP. R. China
- Collaborative Innovation Center of Suzhou Nano Science and TechnologySuzhouP. R. China
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Nanoparticles-in-film for the combined vaginal delivery of anti-HIV microbicide drugs. J Control Release 2016; 243:43-53. [PMID: 27664327 DOI: 10.1016/j.jconrel.2016.09.020] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 09/15/2016] [Accepted: 09/20/2016] [Indexed: 11/22/2022]
Abstract
Combining two or more antiretroviral drugs in one medical product is an interesting but challenging strategy for developing topical anti-HIV microbicides. We developed a new vaginal delivery system comprising the incorporation of nanoparticles (NPs) into a polymeric film base - NPs-in-film - and tested its ability to deliver tenofovir (TFV) and efavirenz (EFV). EFV-loaded poly(lactic-co-glycolic acid) NPs were incorporated alongside free TFV into fast dissolving films during film manufacturing. The delivery system was characterized for physicochemical properties, as well as genital distribution, local and systemic 24h pharmacokinetics (PK), and safety upon intravaginal administration to mice. NPs-in-film presented suitable technological, mechanical and cytotoxicity features for vaginal use. Retention of NPs in vivo was enhanced both in vaginal lavages and tissue when associated to film. PK data evidenced that vaginal drug levels rapidly decreased after administration but NPs-in-film were still able to enhance drug concentrations of EFV. Obtained values for area-under-the-curve for EFV were around one log10 higher than those for the free drugs in aqueous vehicle (phosphate buffered saline). Film alone also contributed to higher and more prolonged local drug levels as compared to the administration of TFV and EFV in aqueous vehicle. Systemic exposure to both drugs was low. NPs-in-film was found to be safe upon once daily vaginal administration to mice, with no significant genital histological changes or major alterations in cytokine/chemokine profiles being observed. Overall, the proposed NPs-in-film system seems to be an interesting delivery platform for developing combination vaginal anti-HIV microbicides.
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Nanocapsules with glycerol monolaurate: Effects on Candida albicans biofilms. Microb Pathog 2016; 97:119-24. [DOI: 10.1016/j.micpath.2016.05.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/21/2016] [Accepted: 05/21/2016] [Indexed: 11/20/2022]
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Lavra ZMM, Pereira de Santana D, Ré MI. Solubility and dissolution performances of spray-dried solid dispersion of Efavirenz in Soluplus. Drug Dev Ind Pharm 2016; 43:42-54. [DOI: 10.1080/03639045.2016.1205598] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Zênia Maria Maciel Lavra
- Mines Albi, CNRS, Centre RAPSODEE, Campus Jarlard, Université de Toulouse, Albi, France
- Department of Pharmaceutics Sciences, Faculty of Pharmacy, Federal University of Pernambuco, Pernambuco, PE, Brazil
| | - Davi Pereira de Santana
- Department of Pharmaceutics Sciences, Faculty of Pharmacy, Federal University of Pernambuco, Pernambuco, PE, Brazil
| | - Maria Inês Ré
- Mines Albi, CNRS, Centre RAPSODEE, Campus Jarlard, Université de Toulouse, Albi, France
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Armendáriz-Barragán B, Zafar N, Badri W, Galindo-Rodríguez SA, Kabbaj D, Fessi H, Elaissari A. Plant extracts: from encapsulation to application. Expert Opin Drug Deliv 2016; 13:1165-75. [PMID: 27139509 DOI: 10.1080/17425247.2016.1182487] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Plants are a natural source of various products with diverse biological activities offering treatment for several diseases. Plant extract is a complex mixture of compounds, which can have antioxidant, antibiotic, antiviral, anticancer, antiparasitic, antifungal, hypoglycemic, anti-hypertensive and insecticide properties. The extraction of these extracts requires the use of organic solvents, which not only complicates the formulations but also makes it difficult to directly use the extracts for humans. To overcome these problems, recent research has been focused on developing new ways to formulate the plant extracts and delivering them safely with enhanced therapeutic efficacy. AREAS COVERED This review focuses on the research done in the development and use of polymeric nanoparticles for the encapsulation and administration of plant extracts. It describes in detail, the different encapsulation techniques, main physicochemical characteristics of the nanoparticles, toxicity tests and results obtained from in vivo or in vitro assays. EXPERT OPINION Major obstacles associated with the use of plant extracts for clinical applications include their complex composition, toxicity risks and extract instability. It is observed that encapsulation can be successfully used to decrease plant extracts toxicity, to provide targeted drug delivery and to solve stability related problems.
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Affiliation(s)
- Brenda Armendáriz-Barragán
- a Departamento de Química Analítica, Facultad de Ciencias Biológicas , Universidad Autónoma de Nuevo León , San Nicolás de los Garza , México.,b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
| | - Nadiah Zafar
- b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
| | - Waisudin Badri
- b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
| | - Sergio Arturo Galindo-Rodríguez
- a Departamento de Química Analítica, Facultad de Ciencias Biológicas , Universidad Autónoma de Nuevo León , San Nicolás de los Garza , México
| | - Dounia Kabbaj
- c Department of Agronomy and Life Science, Universiapolis , International University of Agadir , Agadir , Morocco
| | - Hatem Fessi
- b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
| | - Abdelhamid Elaissari
- b Laboratoire d'Automatique et des Génie des Procédés (ESCPE, CNRS UMR 5007) , Université Claude Bernard Lyon I , Villeurbanne , France
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Mixed surfactant based (SNEDDS) self-nanoemulsifying drug delivery system presenting efavirenz for enhancement of oral bioavailability. Biomed Pharmacother 2016; 80:42-51. [PMID: 27133038 DOI: 10.1016/j.biopha.2016.02.039] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 02/16/2016] [Accepted: 02/16/2016] [Indexed: 01/11/2023] Open
Abstract
This study aims to develop a self-nanoemulsifying drug delivery system (SNEDDS) based on non-ionic surfactant mixtures to improve the oral bioavailability of efavirenz (EFZ) categorized as a class II according to the BCS, for HIV- therapy. The result of solubility studies of EFZ in various excipients utilized for construction of the pseudo ternary phase diagram containing surfactant mixtures. Surfactants in 1:1 combination are used with different co-surfactants in different ratio to delineate the area of monophasic region of the pseudo ternary phase diagram. Different accelerated physical stability studies and self-emulsification assessment were performed on the formulations. The formulations clearing the above studies are considered for percentage transmittance and turbidity analysis. The globule size distributions of post diluted SNEDDS having percentage transmittance above 90 were estimated. The TEM analysis of two optimized post diluted SNEDDS formulations further confirm the size in nanometric range (below 50nm). FT-IR studies showed the retention of the characteristic peaks of EFZ in the preconcentrate. The in vitro dissolution profile of SNEDDS established advantages of SNEDDS over plain drug as more than 80% drug was released within 30min in case of optimized SNEDDS while it was approximately 18.3% in the case of plain drug powder. Pharmacokinetic parameters were calculated after performing the in vivo studies of best optimized formulation in rats. The Pharmacokinetic data reveal a 2.63 fold increase in AUC(0-∞) in comparison to plain EFZ suspension. The designed delivery system showed the faith in generating an effective formulation of EFZ for HIV treatment.
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Double emulsion solvent evaporation techniques used for drug encapsulation. Int J Pharm 2015; 496:173-90. [DOI: 10.1016/j.ijpharm.2015.10.057] [Citation(s) in RCA: 256] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/21/2015] [Accepted: 10/22/2015] [Indexed: 12/11/2022]
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Advantages and challenges of the spray-drying technology for the production of pure drug particles and drug-loaded polymeric carriers. Adv Colloid Interface Sci 2015; 223:40-54. [PMID: 26043877 DOI: 10.1016/j.cis.2015.05.003] [Citation(s) in RCA: 313] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 05/11/2015] [Accepted: 05/17/2015] [Indexed: 01/09/2023]
Abstract
Spray-drying is a rapid, continuous, cost-effective, reproducible and scalable process for the production of dry powders from a fluid material by atomization through an atomizer into a hot drying gas medium, usually air. Often spray-drying is considered only a dehydration process, though it also can be used for the encapsulation of hydrophilic and hydrophobic active compounds within different carriers without substantial thermal degradation, even of heat-sensitive substances due to fast drying (seconds or milliseconds) and relatively short exposure time to heat. The solid particles obtained present relatively narrow size distribution at the submicron-to-micron scale. Generally, the yield% of spray-drying at laboratory scale with conventional spray-dryers is not optimal (20-70%) due to the loss of product in the walls of the drying chamber and the low capacity of the cyclone to separate fine particles (<2 μm). Aiming to overcome this crucial drawback in early development stages, new devices that enable the production of submicron particles with high yield, even for small sample amounts, have been introduced into the market. This review describes the most outstanding advantages and challenges of the spray-drying method for the production of pure drug particles and drug-loaded polymeric particles and discusses the potential of this technique and the more advanced equipment to pave the way toward reproducible and scalable processes that are critical to the bench-to-bedside translation of innovative pharmaceutical products.
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Xiao B, Si X, Zhang M, Merlin D. Oral administration of pH-sensitive curcumin-loaded microparticles for ulcerative colitis therapy. Colloids Surf B Biointerfaces 2015; 135:379-385. [PMID: 26275840 DOI: 10.1016/j.colsurfb.2015.07.081] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 07/24/2015] [Accepted: 07/30/2015] [Indexed: 02/07/2023]
Abstract
Oral colon-specific drug delivery is of great interest for ulcerative colitis (UC) therapy. Here, an emulsion-solvent evaporation method was used to fabricate microparticles (MPs) with pH-sensitive Eudragit S100 (ERS100) and poly(lactide-co-glycolide) (PLGA), and the MPs were loaded with curcumin (an efficient anti-inflammatory agent). The resultant spherical MPs had a desirable particle size ranging from 1.52 to 1.91 μm. Their loading efficiency could be regulated by changing the weight ratios of ERS100 and PLGA, with some MPs exhibiting loading efficiencies over 80%. It was observed that the fast release of curcumin from MPs in buffers (pH 1.2 and 6.8) could be significantly decreased by increasing the PLGA content. ERS100/PLGA MPs with a weight ratio of 1:2 (MPs-4) were able to maintain sustained release of curcumin, releasing ∼ 48% of the initial drug load at pH 7.2-7.4 during a 20 h-incubation. Most importantly, in vivo experiments revealed that orally administered MPs-4 had a superior therapeutic efficiency in alleviating colitis in a UC mouse model, compared to curcumin. Collectively, our one-step-fabricated curcumin-loaded MPs have the properties of pH-sensitivity, controlled drug release and colon targeting, and thus, may hold promise as a readily scalable drug carrier for the efficient clinical treatment of UC.
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Affiliation(s)
- Bo Xiao
- Institute for Clean Energy and Advanced Materials, Faculty for Materials and Energy, Southwest University, Chongqing 400715, PR China; Center for Diagnostics and Therapeutics, Institute for Biomedical Sciences, Georgia State University, Atlanta 30302, USA.
| | - Xiaoying Si
- Institute for Clean Energy and Advanced Materials, Faculty for Materials and Energy, Southwest University, Chongqing 400715, PR China
| | - Mingzhen Zhang
- Center for Diagnostics and Therapeutics, Institute for Biomedical Sciences, Georgia State University, Atlanta 30302, USA
| | - Didier Merlin
- Center for Diagnostics and Therapeutics, Institute for Biomedical Sciences, Georgia State University, Atlanta 30302, USA; Atlanta Veterans Affairs Medical Center, Decatur 30033, USA
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