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Sato T, Haneishi K, Hisada H, Fujii MY, Koide T, Fukami T. Real-Time Quantitative Evaluation of a Drug during Liposome Preparation Using a Probe-Type Raman Spectrometer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7962-7973. [PMID: 38577710 DOI: 10.1021/acs.langmuir.3c03872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
During the manufacturing process of liposome formulations, it is considered difficult to evaluate their physicochemical properties and biological profiles due to the complexity of their structure and manufacturing process. Conventional quality evaluation is labor-intensive and time-consuming; therefore, there was a need to introduce a method that could perform in-line, real-time evaluation during the manufacturing process. In this study, Raman spectroscopy was used to monitor in real time the encapsulation of drugs into liposomes and the drug release, which are particularly important quality evaluation items. Furthermore, Raman spectroscopy combined with partial least-squares (PLS) analysis was used for quantitative drug evaluation to assess consistency with results from UV-visible spectrophotometry (UV), a common quantification method. The prepared various ciprofloxacin (CPFX) liposomes were placed in cellulose tubes, and a probe-type Raman spectrophotometer was used to monitor drug encapsulation, the removal of unencapsulated drug, and drug release characteristics in real time using a dialysis method. In the Raman spectra of the liposomes prepared by remote loading, the intensities of the CPFX-derived peaks increased upon drug encapsulation and showed a slight decrease upon removal of the unencapsulated drug. Furthermore, the peak intensity decreased more gradually during the drug release. In all Raman monitoring experiments, the discrepancy between quantified values of CPFX concentration in liposomes, as measured by Raman spectroscopy combined with partial least-squares (PLS) analysis, and those obtained through ultraviolet (UV) spectrophotometry was within 6.7%. The results revealed that the quantitative evaluation of drugs using a combination of Raman spectroscopy and PLS analysis was as accurate as the evaluation using UV spectrophotometry, which was used for comparison. These results indicate the promising potential of Raman spectroscopy as an innovative method for the quality evaluation of liposomal formulations.
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Affiliation(s)
- Takumi Sato
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Kazuki Haneishi
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Hiroshi Hisada
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Mika Yoshimura Fujii
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Tatsuo Koide
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan
| | - Toshiro Fukami
- Department of Molecular Pharmaceutics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
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Abdullah S, Bani-Jaber A, Alhakamy NA, Jamous YF, Al-Masud AA, Marzoog Al-Sharafa M. Preparation and in vitro/in vivo characterization of sustained-release ciprofloxacin-carrageenan complex. Eur J Pharm Biopharm 2023; 191:78-89. [PMID: 37619955 DOI: 10.1016/j.ejpb.2023.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/16/2023] [Accepted: 08/20/2023] [Indexed: 08/26/2023]
Abstract
The goal of the study was to look into drug-polyelectrolyte complexation between ciprofloxacin (Cipro) and λ-carrageenan (CRG), and to employ the complex as a sustained-release matrix. The maximum binding capacity of the complexation was determined using the dialysis bag method and employed to prepare the complex. In comparison to Cipro, CRG, and their physical mixing, the complex was examined using differential scanning calorimetry, Fourier infrared spectroscopy, powder X-ray diffraction, and scanning electron microscopy. Cipro-CRG matrices, manufactured as direct compression tablets based on the greatest binding capacity, were assessed for swelling, erosion and drug release in 0.1 M HCl, in comparison with those of CRG, Hydroxypropyl methylcellulose (HPMC) and Cipro-HPMC matrices. In vivo absorption study comparing the Cipro-CRG matrix to Cipro immediate-release tablet was also carried out. The greatest binding capacity of Cipro to CRG was 55% (w/w). Multiple interactions, including electrostatic interaction, Vander wall forces, and hydrogen bonding, have been proposed to be involved in complexation with drug amorphization. As a result of the complexation, the swelling and erosion properties of CRG changed, with Cipro-CRG matrix showing substantially less swelling and erosion than Cipro-free CRG matrix. Cipro-CRG matrix exhibited swelling and erosion similar to Cipro-HPMC matrix. However, the former matrix demonstrated Cipro release with significantly less burst impact and a significantly slower release rate. Furthermore, Cipro-CRG matrices in vivo demonstrated slow-prolonged oral drug absorption with consequent significant changes in pharmacokinetic parameters in comparison to those obtained for immediate-release tablets.
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Affiliation(s)
- Samaa Abdullah
- Health Sciences Research Centre, Princess Nourah bint Abdulrahman University, Riyadh 84428, Saudi Arabia.
| | - Ahmad Bani-Jaber
- Department of Pharmaceutics and Pharmaceutical Technology, School of Pharmacy, The University of Jordan, Amman, Jordan.
| | - Nabil A Alhakamy
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Center of Excellence for Drug Research Pharmaceutical Industries, King Abdulaziz University, Jeddah, Saudi Arabia; Mohamed Saeed Tamer Chair for Pharmaceutical Industries, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Yahya F Jamous
- The National Centre of Vaccines and Bioprocessing, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia
| | - Alaa A Al-Masud
- Tissue Banking Section, Research Department, Health Science Research Center, Princess Nourah bint Abdulrahman University, Riyadh 84428, Saudi Arabia
| | - Meshal Marzoog Al-Sharafa
- Tissue Banking Section, Research Department, Health Science Research Center, Princess Nourah bint Abdulrahman University, Riyadh 84428, Saudi Arabia
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Sivadasan D, Sultan MH, Alqahtani SS, Javed S. Cubosomes in Drug Delivery-A Comprehensive Review on Its Structural Components, Preparation Techniques and Therapeutic Applications. Biomedicines 2023; 11:biomedicines11041114. [PMID: 37189732 DOI: 10.3390/biomedicines11041114] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/25/2023] [Accepted: 04/03/2023] [Indexed: 05/17/2023] Open
Abstract
Cubosomes are lipid vesicles that are comparable to vesicular systems like liposomes. Cubosomes are created with certain amphiphilic lipids in the presence of a suitable stabiliser. Since its discovery and designation, self-assembled cubosomes as active drug delivery vehicles have drawn much attention and interest. Oral, ocular, transdermal, and chemotherapeutic are just a few of the drug delivery methods in which they are used. Cubosomes show tremendous potential in drug nanoformulations for cancer therapeutics because of their prospective advantages, which include high drug dispersal due to the structure of the cubic, large surface area, a relatively simple manufacturing process, biodegradability, ability to encapsulate hydrophobic, hydrophilic, and amphiphilic compounds, targeted and controlled release of bioactive agents, and biodegradability of lipids. The most typical technique of preparation is the simple emulsification of a monoglyceride with a polymer, followed by sonication and homogenisation. Top-down and bottom-up are two different sorts of preparation techniques. This review will critically analyse the composition, preparation techniques, drug encapsulation approaches, drug loading, release mechanism and applications relevant to cubosomes. Furthermore, the challenges faced in optimising various parameters to enhance the loading capacities and future potentialities are also addressed.
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Affiliation(s)
- Durgaramani Sivadasan
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Muhammad H Sultan
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Saad S Alqahtani
- Department of Clinical Pharmacy, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Shamama Javed
- Department of Pharmaceutics, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
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Formulation Development of Doxycycline-Loaded Lipid Nanocarriers using Microfluidics by QbD Approach. J Pharm Sci 2023; 112:740-750. [PMID: 36170906 DOI: 10.1016/j.xphs.2022.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/24/2022]
Abstract
Liposomes have been used to improve therapeutic efficacy of drugs by increasing their bioavailability and altering biodistribution. The loading capacity of small molecules in liposomes remains a critical issue. Besides, the manufacturing process of liposomes requires multi-step procedures which hinders the clinical development. In this study, we developed a promising lipid-based nanocarriers (LN) delivery system for hydrophilic charged compounds using doxycycline (Doxy) as a model drug. This Doxy-loaded lipid nanocarrier (LN-Doxy) was fabricated by microfluidic technology. Design of experiments (DoE) was constructed to outline the interactions among the critical attributes of formulation, the parameters of microfluidic systems and excipient compositions. Response surface methodology (RSM) was furthered used for the optimization of LN-Doxy formulation. The LN-Doxy developed in this study showed high drug to lipid ratio and uniform distribution of particle size. Compared to Doxy solution, this LN-Doxy has reduced in vitro cellular toxicity and significant therapeutic efficacy which was verified in a peritonitis animal model. These results show the feasibility of using microfluidic technology combined with QbD approach to develop the LN formulation with high loading efficiency for ionizable hydrophilic drugs.
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Ashar H, Singh A, Ektate K, More S, Ranjan A. Treating methicillin-resistant Staphylococcus aureus (MRSA) bone infection with focused ultrasound combined thermally sensitive liposomes. Int J Hyperthermia 2023; 40:2211278. [PMID: 37437891 DOI: 10.1080/02656736.2023.2211278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 05/02/2023] [Accepted: 05/02/2023] [Indexed: 07/14/2023] Open
Abstract
OBJECTIVE Chronic bone infection caused by Staphylococcus aureus biofilms in children and adults is characterized by reduced antibiotic sensitivity. In this study, we assessed 'heat-targeted, on-demand' antibiotic delivery for S. aureus killing by combining ciprofloxacin (CIP)-laden low-temperature sensitive liposomes (LTSLs) with local high-intensity focused ultrasound (HIFU) induced bone heating in a rat model of bone infection. METHODS CIP-LTSLs were prepared using the thin-film hydration and extrusion method. Bone infection was established by surgically implanting an orthopedic K-wire colonized with methicillin-resistant S. aureus (MRSA) strain into rat's femurs. For bone heating, ultrasound-guided HIFU exposures were performed to achieve a local temperature of 40-42 °C (∼15 min) concurrently with intravenous injection of CIP-LTSLs or CIP. CIP biodistribution was determined spectrophotometrically and therapeutic efficacy was determined by bacteriological, histological and scanning electron microscopy (SEM) analyses. RESULTS CIP-LTSLs in the range of 183.5 nm ± 1.91 showed an encapsulation efficiency of >70% at 37 °C and a complete release at ∼42 °C. The metal implantation method yielded medullary osteomyelitis characterized by suppurative changes (bacterial and pus pockets) by day 10 in bones and adjoining muscle tissues. HIFU heating significantly improved CIP delivery from LTSLs in bones, resulting in a significant reduction in MRSA load compared to HIFU and CIP alone groups. These were also verified by histology and SEM, wherein a distinct reduction in S. aureus population in the infected metal wires and tissues from the combinatorial therapy was noted. CONCLUSION HIFU improved CIP delivery to bones, achieving clearance of hard-to-treat MRSA biofilms.
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Affiliation(s)
- Harshini Ashar
- Department of Physiological Sciences, College of Veterinary Medicine, OK State University, Stillwater, OK, USA
| | - Akansha Singh
- Department of Physiological Sciences, College of Veterinary Medicine, OK State University, Stillwater, OK, USA
| | - Kalyani Ektate
- Department of Physiological Sciences, College of Veterinary Medicine, OK State University, Stillwater, OK, USA
| | - Sunil More
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK, USA
| | - Ashish Ranjan
- Department of Physiological Sciences, College of Veterinary Medicine, OK State University, Stillwater, OK, USA
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Investigation of the Binding Behavior of PAMAMs-NH2 Dendrimers with Ofloxacin via NMR Studies. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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7
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Jian CB, Yu XE, Gao HD, Chen HA, Jheng RH, Chen CY, Lee HM. Liposomal PHD2 Inhibitors and the Enhanced Efficacy in Stabilizing HIF-1α. NANOMATERIALS 2022; 12:nano12010163. [PMID: 35010112 PMCID: PMC8746909 DOI: 10.3390/nano12010163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/28/2021] [Accepted: 12/30/2021] [Indexed: 12/10/2022]
Abstract
Prolyl hydroxylase domain-containing protein 2 (PHD2) inhibition, which stabilizes hypoxia-inducible factor (HIF)-1α and thus triggers adaptation responses to hypoxia in cells, has become an important therapeutic target. Despite the proven high potency, small-molecule PHD2 inhibitors such as IOX2 may require a nanoformulation for favorable biodistribution to reduce off-target toxicity. A liposome formulation for improving the pharmacokinetics of an encapsulated drug while allowing a targeted delivery is a viable option. This study aimed to develop an efficient loading method that can encapsulate IOX2 and other PHD2 inhibitors with similar pharmacophore features in nanosized liposomes. Driven by a transmembrane calcium acetate gradient, a nearly 100% remote loading efficiency of IOX2 into liposomes was achieved with an optimized extraliposomal solution. The electron microscopy imaging revealed that IOX2 formed nanoprecipitates inside the liposome’s interior compartments after loading. For drug efficacy, liposomal IOX2 outperformed the free drug in inducing the HIF-1α levels in cell experiments, especially when using a targeting ligand. This method also enabled two clinically used inhibitors—vadadustat and roxadustat—to be loaded into liposomes with a high encapsulation efficiency, indicating its generality to load other heterocyclic glycinamide PHD2 inhibitors. We believe that the liposome formulation of PHD2 inhibitors, particularly in conjunction with active targeting, would have therapeutic potential for treating more specifically localized disease lesions.
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Affiliation(s)
- Cheng-Bang Jian
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (C.-B.J.); (X.-E.Y.); (H.-D.G.); (H.-A.C.); (R.-H.J.); (C.-Y.C.)
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
- Nano Science and Technology Program, Taiwan International Graduate Program, Academia Sinica and National Taiwan University, Taipei 11529, Taiwan
| | - Xu-En Yu
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (C.-B.J.); (X.-E.Y.); (H.-D.G.); (H.-A.C.); (R.-H.J.); (C.-Y.C.)
- Department of Chemistry, National Central University, Taoyuan City 320317, Taiwan
| | - Hua-De Gao
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (C.-B.J.); (X.-E.Y.); (H.-D.G.); (H.-A.C.); (R.-H.J.); (C.-Y.C.)
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Huai-An Chen
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (C.-B.J.); (X.-E.Y.); (H.-D.G.); (H.-A.C.); (R.-H.J.); (C.-Y.C.)
| | - Ren-Hua Jheng
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (C.-B.J.); (X.-E.Y.); (H.-D.G.); (H.-A.C.); (R.-H.J.); (C.-Y.C.)
- Department of Chemistry, National Central University, Taoyuan City 320317, Taiwan
| | - Chong-Yan Chen
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (C.-B.J.); (X.-E.Y.); (H.-D.G.); (H.-A.C.); (R.-H.J.); (C.-Y.C.)
| | - Hsien-Ming Lee
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (C.-B.J.); (X.-E.Y.); (H.-D.G.); (H.-A.C.); (R.-H.J.); (C.-Y.C.)
- Correspondence: ; Tel.: +886-2-5572-8620
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Barani M, Sangiovanni E, Angarano M, Rajizadeh MA, Mehrabani M, Piazza S, Gangadharappa HV, Pardakhty A, Mehrbani M, Dell’Agli M, Nematollahi MH. Phytosomes as Innovative Delivery Systems for Phytochemicals: A Comprehensive Review of Literature. Int J Nanomedicine 2021; 16:6983-7022. [PMID: 34703224 PMCID: PMC8527653 DOI: 10.2147/ijn.s318416] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/13/2021] [Indexed: 12/12/2022] Open
Abstract
Nowadays, medicinal herbs and their phytochemicals have emerged as a great therapeutic option for many disorders. However, poor bioavailability and selectivity might limit their clinical application. Therefore, bioavailability is considered a notable challenge to improve bio-efficacy in transporting dietary phytochemicals. Different methods have been proposed for generating effective carrier systems to enhance the bioavailability of phytochemicals. Among them, nano-vesicles have been introduced as promising candidates for the delivery of insoluble phytochemicals. Due to the easy preparation of the bilayer vesicles and their adaptability, they have been widely used and approved by the scientific literature. The first part of the review is focused on introducing phytosome technology as well as its applications, with emphasis on principles of formulations and characterization. The second part provides a wide overview of biological activities of commercial and non-commercial phytosomes, divided by systems and related pathologies. These results confirm the greater effectiveness of phytosomes, both in terms of biological activity or reduced dosage, highlighting curcumin and silymarin as the most formulated compounds. Finally, we describe the promising clinical and experimental findings regarding the applications of phytosomes. The conclusion of this study encourages the researchers to transfer their knowledge from laboratories to market, for a further development of these products.
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Affiliation(s)
- Mahmood Barani
- Medical Mycology and Bacteriology Research Center, Kerman University of Medical Sciences, Kerman, 76169-13555, Iran
| | - Enrico Sangiovanni
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, 20133, Italy
| | - Marco Angarano
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, 20133, Italy
| | | | - Mehrnaz Mehrabani
- Physiology Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Stefano Piazza
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, 20133, Italy
| | | | - Abbas Pardakhty
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Mehrzad Mehrbani
- Department of Traditional Medicine, Faculty of Traditional Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Mario Dell’Agli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, 20133, Italy
| | - Mohammad Hadi Nematollahi
- Herbal and Traditional Medicines Research Center, Kerman University of Medical Sciences, Kerman, Iran
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Abioye A, Naqvi M, Pattni D, Adepoju-Bello AA. Non-intuitive Behavior of Polymer-Ciprofloxacin Nanoconjugate Suspensions: a Tool for Flexible Oral Drug Delivery. AAPS PharmSciTech 2021; 22:229. [PMID: 34467444 DOI: 10.1208/s12249-021-02105-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/31/2021] [Indexed: 12/20/2022] Open
Abstract
Ciprofloxacin (CPX) is prone to spontaneous self-aggregation and formation of supramolecular dimers (π - π stacking) due to its complicated surface chemistry which has been associated with its anomalous solubility and instability in aqueous systems particularly near neutral pH. The surface characteristic of ciprofloxacin was modified through non-intuitive counterion interaction between CPX and diethylaminoethyl dextran (DDEX) to form nanoconjugate assembly. The CPX-DDEX nanoconjugate was confirmed by FTIR, SEM, DSC, TGA, and 1H-NMR. The DSC thermograms showed a remarkable 20% reduction in the melting temperature (Tm) of CPX from 268.57±1.11°C to 214.36±1.0211°C and 78% reduction in enthalpy of fusion (ΔHf) from 59.84 kJ/mol (180.59 J/g) to 12.90 kJ/mol (38.92 J/g), indicating increased solubility and dissolution efficiency. DDEX polymer alone exhibited pseudoplastic characteristics however with more viscous rather than elastic response, while the CPX-DDEX nanoconjugate suspensions exhibited remarkable elastic behavior with significantly increased storage modulus (G') thus controlling and extending the release of CPX. The reconstituted freeze-dried CPX-DDEX nanoconjugate suspension was chemically stable throughout the 90-day study both in the refrigerator and at controlled room temperature, while the aqueous suspension of pure CPX without DDEX was only stable for 72 and 24 h, respectively. The dissolution efficiency of the CPX-DDEX nanoconjugate suspensions increased with increasing molar concentration of DDEX to a maximum of 100% at 50 μM of DDEX followed by a remarkable decrease within the 3-week study. It was apparent that the dissolution efficiency was governed by a critical balance between the CPX solubility and the viscoelastic characteristics of the polymeric nanoassembly. This study demonstrates the potential application of polymer-drug nanoconjugation formulation design to stabilization and flexible delivery of CPX from aqueous suspension systems. Graphical abstract.
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Charoo NA, Abdallah DB, Parveen T, Abrahamsson B, Cristofoletti R, Groot DW, Langguth P, Parr A, Polli JE, Mehta M, Shah VP, Tajiri T, Dressman J. Biowaiver Monograph for Immediate-Release Solid Oral Dosage Forms: Moxifloxacin Hydrochloride. J Pharm Sci 2020; 109:2654-2675. [DOI: 10.1016/j.xphs.2020.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/05/2020] [Accepted: 06/03/2020] [Indexed: 01/31/2023]
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A Novel Vitamin E TPGS-Based Formulation Enhances Chlorhexidine Bioavailability in Corneal Layers. Pharmaceutics 2020; 12:pharmaceutics12070642. [PMID: 32650410 PMCID: PMC7407793 DOI: 10.3390/pharmaceutics12070642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/23/2020] [Accepted: 07/07/2020] [Indexed: 02/07/2023] Open
Abstract
Keratitis is a severe condition characterized by inflammation of the cornea following a local trauma. The most common ocular disease is the bacterial one, which requires an antibiotic treatment. The major limitation of this therapy is the resistance of the antibiotic. For this reason, alternative procedures have been developed and consist of antimicrobial molecules. One of the most used is the chlorhexidine gluconate, which has shown activity versus Gram-positive and Gram-negative bacteria and fungi. In addition to its efficiency, chlorhexidine shows low toxicity levels for mammalian cells and is a low-cost molecule. Despite its multiple benefits, chlorhexidine, if used at concentrations higher than 0.02% (w/w), can cause local eye irritation. Additionally, its poor penetrability through the cornea makes necessary frequent instillation of eye drops for a prolonged time. Due to these limitations, alternative drug delivery strategies are required. Here, we report a novel formulation based on the combination of d-alpha-tocopherol polyethylene glycol 1000 succinate with chlorhexidine, which results in higher accumulation of the drug in human corneas measured by liquid chromatography and strong antimicrobial activity. Moreover, this formulation does not cause any toxic effect on human cells and is well tolerated by rabbit eyes. Therefore this novel formulation represents a good candidate for the treatment of keratitis that overcomes the risk of antibiotic resistance.
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12
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Soldevila S, Bosca F. Assessing physical properties of amphoteric fluoroquinolones using phosphorescence spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 227:117569. [PMID: 31670049 DOI: 10.1016/j.saa.2019.117569] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/24/2019] [Accepted: 09/24/2019] [Indexed: 06/10/2023]
Abstract
The self-association of fluoroquinolones (FQ) in water would play a relevant role in their translocations across lipid membranes. Triplet excited states of these drugs have been shown as reporters of FQ self-association using laser flash photolysis technique. A study using low-temperature phosphorescence technique was performed with quinolone derivatives such as enoxacin (ENX), norfloxacin (NFX), pefloxacin (PFX), ciprofloxacin (CPX, ofloxacin (OFX), nalidixic acid (NLA), pipemidic acid (PPA) and piromidic acid (PRA) to explore emission changes associated with self-associations and to shed some light on the triplet excited state energy (ET) discrepancies described in the literature for most of these drugs. The emissions obtained at 77 K in buffered aqueous medium revealed that the amphoteric nature of the quinolones CPX, NFX, PFX, ENX, OFX and PPA must generate their self-associations because a redshift of their phosphorescence maxima is produced by FQ concentrations increases. Hence, this effect was not observed for NLA and PRA or when all quinolones were analysed using ethanol or ethylene glycol aqueous mixtures as glassed solvents. Interestingly, the presence of these organic mixtures produced a blue-shift in the phosphorescence emission maximum of each FQ. Additionally, laser flash photolysis experiments with PRA and the amphoteric quinolone PPA, compounds with the same skeleton but different peripheral substituent, confirm the expected correlations between the amphoteric nature of compounds and their self-associations in aqueous media because the excimer generation was only detected for PPA. Now, the discrepancies described in the literature for the ET of FQs can be understood considering that changes of medium polarity or proticity as well as the temperature can considerably modify their ET values. Thereby, low-temperature phosphorescence technique, is an effective way to detect molecular self-associations and surrounding changes in quinolones that opens the possibility to evaluate these effects in other drug families.
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Affiliation(s)
- Sonia Soldevila
- Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos, s/n, 46022, Valencia, Spain
| | - Francisco Bosca
- Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos, s/n, 46022, Valencia, Spain.
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Yu S, Wang S, Zou P, Chai G, Lin YW, Velkov T, Li J, Pan W, Zhou QT. Inhalable liposomal powder formulations for co-delivery of synergistic ciprofloxacin and colistin against multi-drug resistant gram-negative lung infections. Int J Pharm 2020; 575:118915. [PMID: 31816354 PMCID: PMC7313379 DOI: 10.1016/j.ijpharm.2019.118915] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/23/2019] [Accepted: 11/28/2019] [Indexed: 02/06/2023]
Abstract
The aim of this study was to design and characterize dry powder inhaler formulations of ciprofloxacin and colistin co-loaded liposomes prepared by the ultrasonic spray-freeze-drying (USFD) technique. Liposomal formulations and powder production parameters were optimized to achieve optimal characteristics and in-vitro performance such as encapsulation efficiency (EE), particle size, particle distribution index (PDI), fine particle fraction (FPF), emitted dose (ED) and in vitro antibacterial activity. The formulation (F6) with the mannitol (5% w/v) as the internal lyoprotectant and sucrose (5%, w/v), mannitol (10%, w/v) and leucine (5%, w/w) as the external lyoprotectants/aerosolization enhancers showed an optimal rehydrated EE values of ciprofloxacin and colistin (44.9 ± 0.9% and 47.0 ± 0.6%, respectively) as well as satisfactory aerosol performance (FPF: 45.8 ± 2.2% and 43.6 ± 1.6%, respectively; ED: 97.0 ± 0.5% and 95.0 ± 0.6%, respectively). For the blank liposomes, there was almost no inhibitory effect on the cell proliferation in human lung epithelial A549 cells, showing that the lipid materials used in the liposome formulation is safe for use in pulmonary drug delivery. The cytotoxicity study demonstrated that the optimized liposomal formulation (F6) was not cytotoxic at least at the drug concentrations of colistin 5 μg/mL and ciprofloxacin 20 μg/mL. Colistin (2 mg/L) monotherapy showed no antibacterial effect against P. aeruginosa H131300444 and H133880624. Ciprofloxacin (8 mg/L) monotherapy showed moderate bacterial killing for both clinical isolates; however, regrowth was observed in 6 h for P. aeruginosa H133880624. The liposomal formulation displayed superior antibacterial activity against clinical isolates of Pseudomonas aeruginosa H131300444 and P. aeruginosa H133880624 compared to each antibiotic per se. These results demonstrate that the liposomal powder formulation prepared by USFD could potentially be a pulmonary delivery system for antibiotic combination to treat multi-drug resistant Gram-negative lung infections.
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Affiliation(s)
- Shihui Yu
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China; Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Shaoning Wang
- Department of Medicinal Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Peizhi Zou
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China; Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Guihong Chai
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Yu-Wei Lin
- Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, Victoria 3800, Australia
| | - Tony Velkov
- Department of Pharmacology & Therapeutics, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Jian Li
- Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, Victoria 3800, Australia
| | - Weisan Pan
- Department of Pharmaceutics, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China.
| | - Qi Tony Zhou
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA.
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Dionísio R, Daniel D, Alkimin GDD, Nunes B. Multi-parametric analysis of ciprofloxacin toxicity at ecologically relevant levels: Short- and long-term effects on Daphnia magna. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 74:103295. [PMID: 31786495 DOI: 10.1016/j.etap.2019.103295] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 10/09/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
The increased presence of emergent compounds, such as pharmaceuticals drugs, in the aquatic compartment has been acknowledged as an evolving environmental issue whose consequences are not yet fully characterized. Specific classes of pharmaceutical drugs, such as fluoroquinolone antibiotics, can exert toxic effects to non-target species with ecological significance, since these compounds are environmentally stable and persistent, and may interact with some of the key physiologic processes of organisms. Despite such characteristics, knowledge about the effects of these drugs is still scarce, especially to non-target organisms. The present study aimed to evaluate the effects of chronic and acute exposures of the cladoceran Daphnia magna to the fluoroquinolone antibiotic ciprofloxacin. Putative toxic effects were assessed, following acute and chronic exposures to ecologically relevant concentrations of ciprofloxacin, through enzymatic (cholinesterase - ChEs, catalase - CAT, glutathione S-transferases - GSTs) and non-enzymatic (thiobarbituric acid reactive substances - TBARS, glycogen - Gly) biomarkers. In addition, we also determined behavioural (swimming distance - SD) and morphological (body length of the first brood - BL1B) endpoints in animals exposed to this drug. Ciprofloxacin acute exposure resulted in increased CAT and ChEs activities, and inhibited GSTs activity. After chronic exposure, ChEs activity was significantly inhibited, while GSTs activity was significantly enhanced. TBARS levels were only increased at higher concentrations of ciprofloxacin. CAT activity and Gly content did not evidence a clear and significant pattern of variation. SD was slightly inhibited during dark cycles. BL1B presented a significant decrease for animals subjected to an intermediate concentration. Results showed that even ecologically relevant concentrations of ciprofloxacin may cause oxidative stress in individuals of D. magna. The present study showed important data that corroborate the occurrence of significant biochemical alterations in key features of an aquatic organism when exposed to relevant levels of a widely used antibiotic, establishing essential links between environmental exposure to this specific drug and putative toxic challenges that may result in irreversible changes and damages, especially at the individual level. However, changes in the size of neonates suggest that population alterations are likely to occur under real scenarios of chronic contamination by this drug.
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Affiliation(s)
- Ricardo Dionísio
- Departamento de Biologia, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - David Daniel
- Departamento de Biologia, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Gilberto Dias de Alkimin
- Departamento de Biologia, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Bruno Nunes
- Departamento de Biologia, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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15
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Khatib I, Tang P, Ruan J, Cipolla D, Dayton F, Blanchard JD, Chan HK. Formation of ciprofloxacin nanocrystals within liposomes by spray drying for controlled release via inhalation. Int J Pharm 2020; 578:119045. [PMID: 31981702 DOI: 10.1016/j.ijpharm.2020.119045] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 12/16/2022]
Abstract
The present study was conducted to harness spray drying technology as a novel method of producing Ciprofloxacin nanocrystals inside liposomes (CNL) for inhalation delivery. Liposomal ciprofloxacin dispersions were spray dried with sucrose as a lyoprotectant in different mass ratios (0.5:1, 1:1 and 2:1 sucrose to lipids), along with 2% w/w magnesium stearate and 5% w/w isoleucine as aerosolization enhancers. Spray drying conditions were: inlet air temperature 50 °C, outlet air temperature 33-35 °C, atomizer rate 742 L/h and aspirator 35 m3/h. After spray drying, the formation of ciprofloxacin nanocrystals inside the liposomes was confirmed by cryo- transmission electron microscopy. The physiochemical characteristics of the spray dried powder (particle size, morphology, crystallinity, moisture content, drug encapsulation efficiency (EE), in vitro aerosolization performance and drug release) were determined. The EE of the liposomes was found to vary between 44 and 87% w/w as the sucrose content was increased from 25 to 57% w/w. The powders contained partially crystalline particles with a volume median diameter of ~1 µm. The powders had low water content (~2% wt.) and were stable at high relative humidity. Aerosol delivery using the Osmohaler® inhaler at a flow rate of 100 L/min produced an aerosol fine particle fraction (% wt. <5 µm) of 58-64%. The formulation with the highest sucrose content (2:1 w/w sucrose to lipid) demonstrated extended ciprofloxacin release from liposomes (80% released within 7 h) in comparison to the original liquid formulation (80% released within 2 h). In conclusion, a stable and inhalable CNL powder with controlled drug release was successfully prepared by spray drying.
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Affiliation(s)
- Isra Khatib
- Advanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia
| | - Patricia Tang
- Advanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia
| | - Juanfang Ruan
- Electron Microscope Unit, Mark Wainwright Analytical Centre, The University of New South Wales, NSW 2052, Australia
| | | | | | | | - Hak-Kim Chan
- Advanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, NSW 2006, Australia.
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16
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Zou T, Sipponen MH, Österberg M. Natural Shape-Retaining Microcapsules With Shells Made of Chitosan-Coated Colloidal Lignin Particles. Front Chem 2019; 7:370. [PMID: 31192192 PMCID: PMC6540915 DOI: 10.3389/fchem.2019.00370] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 05/06/2019] [Indexed: 11/15/2022] Open
Abstract
Thin film coating of charged nanoparticles with oppositely charged polymers is an efficient and straightforward way for surface modification, but synthetic polyelectrolytes should be replaced by abundant biopolymers. In this study a thin film of chitosan was adsorbed onto colloidal lignin particles (CLPs) that were then systematically studied for olive oil stabilization with an objective to develop shape-retaining microcapsules that comprised of only renewable biomaterials. Full surface coverage was achieved with merely 5 wt% of chitosan relative to the dry weight of CLPs, reversing their surface charge from negative to positive. Such modification rendered the chitosan-coated particles excellent stabilizers for forming Pickering emulsions with olive oil. The emulsion droplets could be further stabilized by sodium triphosphate that provided ionic intra- and inter-particle cross-linking of the chitosan corona on the CLPs. Following the optimum conditions, the non-cross-linked microcapsules exhibited a strong stability against coalescence and the electrostatically stabilized ones additionally retained their shape upon drying and rewetting. Non-cross-linked microcapsules were used to demonstrate encapsulation and rapid release of ciprofloxacin as a model lipophilic drug in aqueous media. Overall, the combination of antimicrobial chitosan and antioxidative lignin nanoparticles hold unprecedented opportunities as biocompatible and biodegradable materials for controlled drug delivery.
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Affiliation(s)
- Tao Zou
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland
| | - Mika H Sipponen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland
| | - Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland
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17
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Abstract
Over the past few decades, liposome drug delivery systems (liposome DDS) have attracted much attention as the most advanced DDS. Efficacy and toxicity profiles of liposomes are based on their characteristic pharmacokinetics, drug release, and disposition after administration. Many attempts have been made to develop these systems especially as liposomal anti-cancer drugs. In the development of liposome DDS, identification of critical quality attributes and establishment of a control strategy to ensure consistent drug product quality are crucial. Among the quality attributes, particle size, drug encapsulation, and drug release from liposomes would affect their in vivo pharmacokinetic and pharmacodynamic properties. Thus these features need to be evaluated with appropriate analytical methods to confirm the quality and performance of the drug products. This article focuses on drug release from liposomes and reviews the effects of physicochemical properties of loaded drugs on release, simulation of drug release from liposomes, and design of a simulated body fluid for drug release assay of drug products.
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Affiliation(s)
- Eiichi Yamamoto
- Analytical Research, Pharmaceutical Science & Technology Unit, Medicine Development Center, Eisai Co., Ltd
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18
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Delaviz Y, Nascimento MA, Laschuk MW, Liu TW, Yang M, Santerre JP. Synthesis and characterization of Ciprofloxacin-containing divinyl oligomers and assessment of their biodegradation in simulated salivary esterase. Dent Mater 2019; 34:711-725. [PMID: 29402541 DOI: 10.1016/j.dental.2018.01.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 11/27/2017] [Accepted: 01/16/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Two leading causes contributing to dental restoration replacement are the marginal breakdown at the composite/dentin interface and secondary caries mediated by bacteria. The objective of the present study was to synthesize oligomers which incorporated enhanced bio-stability but would also be able to generate antimicrobial function if they underwent degradation. METHODS Stability was incorporated into the oligomers by generating structural features that would physically hinder the availability of hydrolytically sensitive groups in the oligomers. As a proof-of concept for the antibacterial feature, antimicrobial function was achieved by covalently incorporating Ciprofloxacin (CF) into the backbone of cross-linking divinyl oligomers (referred to as EDV and HLH-CFPEG). The hydrolytic stability of the oligomers was studied in simulated human salivary esterase and compared to the commercial monomer 2,2-bis[4(2-hydroxy-3-methacryloxypropoxy)-phenyl]propane (BisGMA). RESULTS Both drug oligomers were found to be significantly more stable than BisGMA. Upon degradation, both drug oligomers released CF differentially in free form. Polymer synthesis from resin formulations containing 15wt% HLH-CFPEG showed a high degree of vinyl group conversion and gel content, and under hydrolytic conditions showed the release of CF during a 28-day monitoring study period. SIGNIFICANCE HLH-CFPEG can be used in dental resin adhesive systems for local delivery of CF to the marginal interface. Minimizing the growth of Streptococcus mutans at the marginal site can improve longevity by reducing esterase activity derived specifically from S. mutans.
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Affiliation(s)
- Yasaman Delaviz
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Ontario, Canada
| | - Mitchell A Nascimento
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Ontario, Canada
| | | | - Timothy W Liu
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Ontario, Canada
| | - Meilin Yang
- Faculty of Dentistry, University of Toronto, Ontario, Canada
| | - J Paul Santerre
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Ontario, Canada; Faculty of Dentistry, University of Toronto, Ontario, Canada.
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19
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Zou T, Sipponen MH, Österberg M. Natural Shape-Retaining Microcapsules With Shells Made of Chitosan-Coated Colloidal Lignin Particles. Front Chem 2019. [PMID: 31192192 DOI: 10.3389/fchem.2019.00370(may)] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/24/2023] Open
Abstract
Thin film coating of charged nanoparticles with oppositely charged polymers is an efficient and straightforward way for surface modification, but synthetic polyelectrolytes should be replaced by abundant biopolymers. In this study a thin film of chitosan was adsorbed onto colloidal lignin particles (CLPs) that were then systematically studied for olive oil stabilization with an objective to develop shape-retaining microcapsules that comprised of only renewable biomaterials. Full surface coverage was achieved with merely 5 wt% of chitosan relative to the dry weight of CLPs, reversing their surface charge from negative to positive. Such modification rendered the chitosan-coated particles excellent stabilizers for forming Pickering emulsions with olive oil. The emulsion droplets could be further stabilized by sodium triphosphate that provided ionic intra- and inter-particle cross-linking of the chitosan corona on the CLPs. Following the optimum conditions, the non-cross-linked microcapsules exhibited a strong stability against coalescence and the electrostatically stabilized ones additionally retained their shape upon drying and rewetting. Non-cross-linked microcapsules were used to demonstrate encapsulation and rapid release of ciprofloxacin as a model lipophilic drug in aqueous media. Overall, the combination of antimicrobial chitosan and antioxidative lignin nanoparticles hold unprecedented opportunities as biocompatible and biodegradable materials for controlled drug delivery.
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Affiliation(s)
- Tao Zou
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland
| | - Mika H Sipponen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland
| | - Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland
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20
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Wang S, Liu C, Wang C, Ma J, Xu H, Guo J, Deng Y. Arsenic trioxide encapsulated liposomes prepared via copper acetate gradient loading method and its antitumor efficiency. Asian J Pharm Sci 2018; 15:365-373. [PMID: 32636954 PMCID: PMC7327756 DOI: 10.1016/j.ajps.2018.12.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 11/04/2018] [Accepted: 12/04/2018] [Indexed: 02/08/2023] Open
Abstract
In this study, arsenic trioxide (ATO) was encapsulated in liposomes via copper acetate (Cu(OAc)2) gradients and high entrapment efficiency of over 80% was obtained. The average particle size and the zeta-potential of the liposomes were detected to be 115.1 ± 29.1 nm and −21.97 ± 0.6 mV, respectively. The TEM images showed rod-like precipitates in the inner aqueous phase, which was supposed be due to the formation of insoluble ATO—Cu complex. The in vitro drug release of ATO—Cu liposomes exhibited a sustained release over 72 h, and the release rates decreased with the increase of the pH of release media. Pharmacokinetic and tissue distribution studies of ATO liposomes showed significantly reduced plasma clearance rate, increased AUC0–12h and T1/2, and improved tumor distribution of As compared to iv administration of ATO solution. The anti-tumor effect of ATO loaded liposomes to S180 tumor-bearing mice was significantly improved with a tumor inhibition rate of 61.2%, meanwhile the toxicity of encapsulated ATO was greatly decreased. In conclusion, ATO can be effectively encapsulated into liposomes by remote loading method via Cu(OAc)2 gradients; the co-administration of ATO and Cu(II) via liposomal formulation may find wide applications in the treatment of various tumors.
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Affiliation(s)
- Shaoning Wang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Chunxiu Liu
- School of Pharmacy, Shenyang Pharmaceutical University, China
| | - Cunyang Wang
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Jia Ma
- School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Benxi 117004, China
| | - Hui Xu
- School of Pharmacy, Shenyang Pharmaceutical University, China
| | - Jianbo Guo
- Shanxi Institute for Food and Drug Control, Xi'an 710065, China
| | - Yihui Deng
- School of Pharmacy, Shenyang Pharmaceutical University, China
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21
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Li T, Mudie S, Cipolla D, Rades T, Boyd BJ. Solid State Characterization of Ciprofloxacin Liposome Nanocrystals. Mol Pharm 2018; 16:184-194. [PMID: 30495965 DOI: 10.1021/acs.molpharmaceut.8b00940] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Liposomes have been widely researched as drug delivery systems; however, the solid state form of drug inside the liposome, whether it is in solution or in a solid state, is often not studied. The solid state properties of the drug inside the liposomes are important, as they dictate the drug release behavior when the liposomes come into contact with physiological fluid. Recently, a new approach of making liposomal ciprofloxacin nanocrystals was proposed by the use of an additional freeze-thawing step in the liposomal preparation method. This paper aims to determine the solid state properties of ciprofloxacin inside the liposomes after this additional freeze-thawing cycle using cryo-TEM, small-angle X-ray scattering (SAXS), and cross-polarized light microscopy (CPLM). Ciprofloxacin precipitated in the ciprofloxacin hydrate crystal form with a unit cell dimension of 16.7 Å. The nanocrystals also showed a phase transition at 93 °C, which represents dehydration of the hydrate crystals to the anhydrate form of ciprofloxacin, verified by temperature-dependent SAXS measurements. Furthermore, the dependence of the solid state form of the nanocrystals on pH was investigated in situ, and it was shown that the liposomal ciprofloxacin nanocrystals retained their crystalline form at pH 6-10. Understanding the solid state attributes of nanocrystals inside liposomes provides improved understanding of drug dissolution and release as well as opening avenues to new applications where the nanosized crystals can provide a dissolution benefit.
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Affiliation(s)
| | - Stephen Mudie
- SAXS/WAXS Beamline , Australian Synchrotron , Clayton , Victoria 3168 , Australia
| | - David Cipolla
- Insmed Inc. , 10 Finderne Avenue , Building 10, Bridgewater , New Jersey 08807-3365 , United States
| | - Thomas Rades
- Department of Pharmacy , University of Copenhagen , Copenhagen 2100 , Denmark
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22
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Ionic gradient liposomes: Recent advances in the stable entrapment and prolonged released of local anesthetics and anticancer drugs. Biomed Pharmacother 2018; 107:34-43. [DOI: 10.1016/j.biopha.2018.07.138] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 11/18/2022] Open
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23
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Ghosh S, Qi R, Carter KA, Zhang G, Pfeifer BA, Lovell JF. Loading and Releasing Ciprofloxacin in Photoactivatable Liposomes. Biochem Eng J 2018; 141:43-48. [PMID: 31105464 DOI: 10.1016/j.bej.2018.10.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We demonstrate that ciprofloxacin can be actively loaded into liposomes that contain small amounts of porphyrin-phospholipid (PoP). PoP renders the liposomes photoactivatable, so that the antibiotic is released from the carrier under red light irradiation (665 nm). The use of 2 molar % PoP in the liposomes accommodated active loading of ciprofloxacin. Further inclusion of 2 molar % of an unsaturated phospholipid accelerated light-triggered drug release, with more than 90 % antibiotic release from the liposomes occurring in less than 30 seconds. With or without laser treatment, ciprofloxacin PoP liposomes inhibited the growth of Bacillus subtilis in liquid media, apparently due to uptake of the liposomes by the bacteria. However, when liposomes were first separated from smaller molecules with centrifugal filtration, only the filtrate from laser-treated liposomes was bactericidal, confirming effective release of active antibiotic. These results establish the feasibility of remote loading antibiotics into photoactivatable liposomes, which could lead to opportunities for enhanced localized antibiotic therapy.
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Affiliation(s)
- Sanjana Ghosh
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, New York, 14260, USA
| | - Ruiquan Qi
- Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York, 14260, USA
| | - Kevin A Carter
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, New York, 14260, USA
| | - Guojian Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York, 14260, USA
| | - Blaine A Pfeifer
- Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Buffalo, New York, 14260, USA
| | - Jonathan F Lovell
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, New York, 14260, USA
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24
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Li T, Cipolla D, Rades T, Boyd BJ. Drug nanocrystallisation within liposomes. J Control Release 2018; 288:96-110. [DOI: 10.1016/j.jconrel.2018.09.001] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/01/2018] [Accepted: 09/01/2018] [Indexed: 12/29/2022]
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25
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Simulation of Stimuli-Responsive and Stoichiometrically Controlled Release Rate of Doxorubicin from Liposomes in Tumor Interstitial Fluid. Pharm Res 2018; 35:103. [PMID: 29557075 DOI: 10.1007/s11095-018-2380-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 03/01/2018] [Indexed: 10/17/2022]
Abstract
PURPOSE To simulate the stimuli-responsive and stoichiometrically controlled doxorubicin (DOX) release from liposomes in in vivo tumor interstitial fluid (TIF), the effect of ammonia concentration and pH on the DOX release from liposomes in human plasma at 37°C was quantitatively evaluated in vitro and the release rate was calculated as a function of ammonia concentration and pH. METHODS Human plasma samples spiked with DOX-loaded PEGylated liposomes (PLD) or Doxil®, containing ammonia (0.3-50 mM) at different pH values, were incubated at 37°C for 24 h. After incubation, the concentration of encapsulated DOX in the samples was determined by validated solid-phase extraction (SPE)-SPE-high performance liquid chromatography. RESULTS Accelerated DOX release (%) from liposomes was observed as the increase of ammonia concentration and pH of the matrix, and the decrease of encapsulated DOX concentration. The release rate was expressed as a function of the ammonia concentration and pH by using Henderson-Hasselbalch equation. CONCLUSIONS The DOX release from PLD in TIF was expressed as a function ammonia concentration and pH at various DOX concentrations. Further, it was found that the DOX release from liposomes in a simulated TIF was more than 15 times higher than in normal plasma.
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26
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Cacicedo ML, Islan GA, Drachemberg MF, Alvarez VA, Bartel LC, Bolzán AD, Castro GR. Hybrid bacterial cellulose–pectin films for delivery of bioactive molecules. NEW J CHEM 2018. [DOI: 10.1039/c7nj03973e] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Novel biopolymeric films based on bacterial cellulose (BC) modified with high methoxylated pectin (HMP) were developed for drug delivery.
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Affiliation(s)
- Maximiliano L. Cacicedo
- Laboratorio de Nanobiomateriales
- CINDEFI
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata-CONICET (CCT La Plata)
| | - Germán A. Islan
- Laboratorio de Nanobiomateriales
- CINDEFI
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata-CONICET (CCT La Plata)
| | - M. Florencia Drachemberg
- Laboratorio de Nanobiomateriales
- CINDEFI
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata-CONICET (CCT La Plata)
| | - Vera A. Alvarez
- Grupo de Materiales Compuestos (CoMP)
- INTEMA (National Research Institute of Material Science and Technology)
- Facultad de Ingeniería
- Universidad Nacional de Mar del Plata
- (B7608FDQ) Mar del Plata
| | - Laura C. Bartel
- Laboratorio de Citogenética y Mutagénesis
- Instituto Multidisciplinario de Biología Celular (IMBICE, CONICET-CCT La Plata – CICPBA)
- 1900 La Plata
- Argentina
| | - Alejandro D. Bolzán
- Laboratorio de Citogenética y Mutagénesis
- Instituto Multidisciplinario de Biología Celular (IMBICE, CONICET-CCT La Plata – CICPBA)
- 1900 La Plata
- Argentina
| | - Guillermo R. Castro
- Laboratorio de Nanobiomateriales
- CINDEFI
- Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata-CONICET (CCT La Plata)
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27
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Islan GA, Ruiz ME, Morales JF, Sbaraglini ML, Enrique AV, Burton G, Talevi A, Bruno-Blanch LE, Castro GR. Hybrid inhalable microparticles for dual controlled release of levofloxacin and DNase: physicochemical characterization and in vivo targeted delivery to the lungs. J Mater Chem B 2017; 5:3132-3144. [DOI: 10.1039/c6tb03366k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Current medical treatments against recurrent pulmonary infections caused by Pseudomonas aeruginosa, such as cystic fibrosis (CF) disorder, involve the administration of inhalable antibiotics.
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Affiliation(s)
- G. A. Islan
- Laboratorio de Nanobiomateriales
- CINDEFI – Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata – CONICET (CCT La Plata)
- Buenos Aires
| | - M. E. Ruiz
- Cátedra de Control de Calidad de Medicamentos
- Departamento de Ciencias Biológicas
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- Buenos Aires
| | - J. F. Morales
- Cátedra de Control de Calidad de Medicamentos
- Departamento de Ciencias Biológicas
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- Buenos Aires
| | - M. L. Sbaraglini
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB)
- Departamento de Ciencias Biológicas
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- Buenos Aires
| | - A. V. Enrique
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB)
- Departamento de Ciencias Biológicas
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- Buenos Aires
| | - G. Burton
- Departamento de Química Orgánica and UMYMFOR (CONICET-UBA)
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
- Ciudad Universitaria
- Buenos Aires
| | - A. Talevi
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB)
- Departamento de Ciencias Biológicas
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- Buenos Aires
| | - L. E. Bruno-Blanch
- Laboratorio de Investigación y Desarrollo de Bioactivos (LIDeB)
- Departamento de Ciencias Biológicas
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata
- Buenos Aires
| | - G. R. Castro
- Laboratorio de Nanobiomateriales
- CINDEFI – Departamento de Química
- Facultad de Ciencias Exactas
- Universidad Nacional de La Plata – CONICET (CCT La Plata)
- Buenos Aires
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28
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Rezhdo O, Speciner L, Carrier R. Lipid-associated oral delivery: Mechanisms and analysis of oral absorption enhancement. J Control Release 2016; 240:544-560. [PMID: 27520734 PMCID: PMC5082615 DOI: 10.1016/j.jconrel.2016.07.050] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 07/27/2016] [Accepted: 07/28/2016] [Indexed: 01/29/2023]
Abstract
The majority of newly discovered oral drugs are poorly water soluble, and co-administration with lipids has proven effective in significantly enhancing bioavailability of some compounds with low aqueous solubility. Yet, lipid-based delivery technologies have not been widely employed in commercial oral products. Lipids can impact drug transport and fate in the gastrointestinal (GI) tract through multiple mechanisms including enhancement of solubility and dissolution kinetics, enhancement of permeation through the intestinal mucosa, and triggering drug precipitation upon lipid emulsion depletion (e.g., by digestion). The effect of lipids on drug absorption is currently not quantitatively predictable, in part due to the multiple complex dynamic processes that can be impacted by lipids. Quantitative mechanistic analysis of the processes significant to lipid system function and overall impact on drug absorption can aid in the understanding of drug-lipid interactions in the GI tract and exploitation of such interactions to achieve optimal lipid-based drug delivery. In this review, we discuss the impact of co-delivered lipids and lipid digestion on drug dissolution, partitioning, and absorption in the context of the experimental tools and associated kinetic expressions used to study and model these processes. The potential benefit of a systems-based consideration of the concurrent multiple dynamic processes occurring upon co-dosing lipids and drugs to predict the impact of lipids on drug absorption and enable rational design of lipid-based delivery systems is presented.
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Affiliation(s)
- Oljora Rezhdo
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, United States
| | - Lauren Speciner
- Department of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, United States
| | - Rebecca Carrier
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, United States.
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29
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Li IC, Moore AN, Hartgerink JD. "Missing Tooth" Multidomain Peptide Nanofibers for Delivery of Small Molecule Drugs. Biomacromolecules 2016; 17:2087-95. [PMID: 27253735 DOI: 10.1021/acs.biomac.6b00309] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The clinical administration of many small molecule hydrophobic drugs is challenged by the insolubility of these drugs under physiological conditions. Because of this, the development of biocompatible scaffolds capable of effectively delivering hydrophobic drug molecules is of particular interest. Multidomain peptides (MDPs) provide biocompatible hydrogel scaffolds that are injectable and space-conforming, allowing for in situ delivery of a variety of drugs. Here we demonstrate that through manipulation of peptide primary sequence, a molecular cavity can be incorporated into the hydrophobic core of these peptide nanofibers allowing for encapsulation and delivery of small molecule drugs with poor water solubility. Using SN-38, daunorubicin, diflunisal, etodolac, levofloxacin, and norfloxacin, we demonstrate drug encapsulation and release from multidomain peptide fibers. Steady-state fluorescence and drug release studies show that hydrogels loaded with SN-38, diflunisal, and etodolac exhibit prolonged drug release profiles due to intrafibrillar drug encapsulation. This study establishes multidomain peptides as promising carriers for localized in situ delivery of small molecule drugs with poor water solubility.
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Affiliation(s)
- I-Che Li
- Departments of Chemistry and Bioengineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Amanda N Moore
- Departments of Chemistry and Bioengineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
| | - Jeffrey D Hartgerink
- Departments of Chemistry and Bioengineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States
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30
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Formulation and stabilization of norfloxacin in liposomal preparations. Eur J Pharm Sci 2016; 91:208-15. [PMID: 27224669 DOI: 10.1016/j.ejps.2016.05.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 04/22/2016] [Accepted: 05/14/2016] [Indexed: 11/23/2022]
Abstract
A number of liposomal preparations of norfloxacin (NF) containing variable concentrations of phosphatidylcholine (PC) (10.8-16.2mM) have been formulated and an entrapment of NF to the extent of 41.7-56.2% was achieved. The values of apparent first-order rate constants (kobs) for the photodegradation of NF in liposomes (pH7.4) lie in the range of 1.05-2.40×10(-3)min(-1) compared to a value of 8.13×10(-3)min(-1) for the photodegradation of NF in aqueous solution (pH7.4). The values of kobs are a linear function of PC concentration indicating an interaction of PC and NF during the reaction. The second-order rate constant for the photochemical interaction of PC and NF has been determined as 8.92×10(-2)M(-1)min(-1). Fluorescence measurements on NF in liposomes indicate a decrease in fluorescence with an increase in PC concentration as a result of formation of NF(-) species which exhibits poor fluorescence. Dynamic light scattering has shown an increase in the size of NF encapsulated liposomes with an increase in PC concentration. The stabilization of NF in liposomes is achieved by the formation of a charge-transfer complex between NF and PC.
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31
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Improving drug retention in liposomes by aging with the aid of glucose. Int J Pharm 2016; 505:194-203. [DOI: 10.1016/j.ijpharm.2016.03.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 03/20/2016] [Accepted: 03/23/2016] [Indexed: 01/24/2023]
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32
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Cipolla D, Wu H, Salentinig S, Boyd B, Rades T, Vanhecke D, Petri-Fink A, Rothin-Rutishauser B, Eastman S, Redelmeier T, Gonda I, Chan HK. Formation of drug nanocrystals under nanoconfinement afforded by liposomes. RSC Adv 2016. [DOI: 10.1039/c5ra25898g] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In response to freeze–thaw, liposome-encapsulated antibiotic (A) is converted into nanocrystalline form (B) resulting in an attenuated drug release profile.
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Affiliation(s)
- D. Cipolla
- Faculty of Pharmacy
- The University of Sydney
- Australia
- Aradigm Corporation
- Hayward
| | - H. Wu
- Aradigm Corporation
- Hayward
- USA
| | - S. Salentinig
- Laboratory for Biointerfaces, Department Materials meet Life, Empa
- Swiss Federal Laboratories for Materials Science and Technology
- St. Gallen
- Switzerland
| | - B. Boyd
- Monash Institute of Pharmaceutical Sciences
- Monash
- Australia
| | - T. Rades
- Department of Pharmaceutical Sciences
- University of Copenhagen
- Denmark
| | - D. Vanhecke
- Adolphe Merkle Institute
- Université de Fribourg
- Fribourg
- Switzerland
| | - A. Petri-Fink
- Adolphe Merkle Institute
- Université de Fribourg
- Fribourg
- Switzerland
| | | | | | | | | | - H. K. Chan
- Faculty of Pharmacy
- The University of Sydney
- Australia
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Franklin RK, Marcus SA, Talaat AM, KuKanich BK, Sullivan R, Krugner-Higby LA, Heath TD. A Novel Loading Method for Doxycycline Liposomes for Intracellular Drug Delivery: Characterization of In Vitro and In Vivo Release Kinetics and Efficacy in a J774A.1 Cell Line Model of Mycobacterium smegmatis Infection. Drug Metab Dispos 2015; 43:1236-45. [PMID: 26033620 DOI: 10.1124/dmd.115.063602] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 06/01/2015] [Indexed: 01/10/2023] Open
Abstract
Doxycycline (doxy) is used in treating intracellular and extracellular infections. Liposomal (LE) antibiotics allow low-frequency dosing and extended efficacy compared with standard (STD) formulations. We developed a novel sulfuric acid-loading method for doxycycline liposomes (LE-doxy). We hypothesized that a single s.c. injection of LE-doxy would be detectable in serum for at least 2 weeks at concentrations equal to or better than STD-doxy and would be bactericidal in an in vitro Mycobacterium smegmatis infection of J774A.1 macrophage cells. Liposomes were encapsulated by sulfuric acid gradient loading, and release kinetics were performed in vitro and in vivo. LE-doxy made using 8.25 mg/ml doxycycline loaded for 24 hours achieved 97.77% capture in 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and 43.87% in sphingomyelin (sphing). Rats were injected s.c. with 50 mg/kg LE-doxy or 5 mg/kg STD-doxy, and serial blood samples were collected. Pharmacokinetics were analyzed using high-performance liquid chromatography. Liver and injection site skin samples were collected at euthanasia (4 weeks postinjection). Minimal histologic tissue reactions occurred after injection of STD (nonliposomal), DPPC, or sphing-doxy. DPPC-doxy had slightly faster in vitro leakage than sphing liposomes, although both were detectable at 264 hours. The mean residence time for DPPC was the highest (111.78 hours), followed by sphing (56.00 hours) and STD (6.86 hours). DPPC and sphing-doxy were detectable at 0.2 μg/ml in serum at 336 hours postadministration. LE-doxy was not toxic to J774A.1 cells in vitro and produced inhibition of viable Mycobacterium smegmatis at 24 and 48 hours. LE-doxy will require further testing in in vivo infection models.
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Affiliation(s)
- Rebekah K Franklin
- Pharmacology, Clinical, Analytical, and Toxicological Services and the Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas (B.K.K.); and Departments of Surgical Sciences (L.A.K.-H.), Pathobiological Sciences (R.S.), and Comparative Biosciences (A.M.T., S.A.M.); School of Veterinary Medicine (R.S.); School of Pharmacy (T.D.H.); and Research Animal Resources Center, University of Wisconsin, Madison, Wisconsin (R.K.F., L.A.K.-H., R.S.)
| | - Sarah A Marcus
- Pharmacology, Clinical, Analytical, and Toxicological Services and the Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas (B.K.K.); and Departments of Surgical Sciences (L.A.K.-H.), Pathobiological Sciences (R.S.), and Comparative Biosciences (A.M.T., S.A.M.); School of Veterinary Medicine (R.S.); School of Pharmacy (T.D.H.); and Research Animal Resources Center, University of Wisconsin, Madison, Wisconsin (R.K.F., L.A.K.-H., R.S.)
| | - Adel M Talaat
- Pharmacology, Clinical, Analytical, and Toxicological Services and the Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas (B.K.K.); and Departments of Surgical Sciences (L.A.K.-H.), Pathobiological Sciences (R.S.), and Comparative Biosciences (A.M.T., S.A.M.); School of Veterinary Medicine (R.S.); School of Pharmacy (T.D.H.); and Research Animal Resources Center, University of Wisconsin, Madison, Wisconsin (R.K.F., L.A.K.-H., R.S.)
| | - Butch K KuKanich
- Pharmacology, Clinical, Analytical, and Toxicological Services and the Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas (B.K.K.); and Departments of Surgical Sciences (L.A.K.-H.), Pathobiological Sciences (R.S.), and Comparative Biosciences (A.M.T., S.A.M.); School of Veterinary Medicine (R.S.); School of Pharmacy (T.D.H.); and Research Animal Resources Center, University of Wisconsin, Madison, Wisconsin (R.K.F., L.A.K.-H., R.S.)
| | - Ruth Sullivan
- Pharmacology, Clinical, Analytical, and Toxicological Services and the Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas (B.K.K.); and Departments of Surgical Sciences (L.A.K.-H.), Pathobiological Sciences (R.S.), and Comparative Biosciences (A.M.T., S.A.M.); School of Veterinary Medicine (R.S.); School of Pharmacy (T.D.H.); and Research Animal Resources Center, University of Wisconsin, Madison, Wisconsin (R.K.F., L.A.K.-H., R.S.)
| | - Lisa A Krugner-Higby
- Pharmacology, Clinical, Analytical, and Toxicological Services and the Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas (B.K.K.); and Departments of Surgical Sciences (L.A.K.-H.), Pathobiological Sciences (R.S.), and Comparative Biosciences (A.M.T., S.A.M.); School of Veterinary Medicine (R.S.); School of Pharmacy (T.D.H.); and Research Animal Resources Center, University of Wisconsin, Madison, Wisconsin (R.K.F., L.A.K.-H., R.S.)
| | - Timothy D Heath
- Pharmacology, Clinical, Analytical, and Toxicological Services and the Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas (B.K.K.); and Departments of Surgical Sciences (L.A.K.-H.), Pathobiological Sciences (R.S.), and Comparative Biosciences (A.M.T., S.A.M.); School of Veterinary Medicine (R.S.); School of Pharmacy (T.D.H.); and Research Animal Resources Center, University of Wisconsin, Madison, Wisconsin (R.K.F., L.A.K.-H., R.S.)
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Zhang W, Wang G, See E, Shaw JP, Baguley BC, Liu J, Amirapu S, Wu Z. Post-insertion of poloxamer 188 strengthened liposomal membrane and reduced drug irritancy and in vivo precipitation, superior to PEGylation. J Control Release 2015; 203:161-9. [PMID: 25701612 DOI: 10.1016/j.jconrel.2015.02.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 01/29/2015] [Accepted: 02/17/2015] [Indexed: 02/05/2023]
Abstract
The ultimate aim of this study was to develop asulacrine (ASL)-loaded long-circulating liposomes to prevent phlebitis during intravenous (i.v.) infusion for chemotherapy. Poly(ethylene)glycol (PEG) and poloxamer 188-modified liposomes (ASL-PEGL and ASL-P188L) were developed, and ASL was loaded using a remote loading method facilitated with a low concentration of sulfobutyl ether-β-cyclodextrin as a drug solubilizer. The liposomes were characterized in terms of morphology, size, release properties and stability. Pharmacokinetics and venous tissue tolerance of the formulations were simultaneously studied in rabbits following one-hour i.v. infusion via the ear vein. The irritancy was assessed using a rat paw-lift/lick model after subplantar injections. High drug loading 9.0% w/w was achieved with no drug leakage found from ASL-PEGL or ASL-P188L suspended in a 5% glucose solution at 30days. However, a rapid release (leakage) from ASL-PEGL was observed when PBS was used as release medium, partially related to the use of cyclodextrin in drug loading. Post-insertion of poloxamer 188 to the liposomes appeared to be able to restore the drug retention possibly by increasing the packing density of phospholipids in the membrane. In rabbits (n=5), ASL-P188L had a prolonged half-life with no drug precipitation or inflammation in the rabbit ear vein in contrast to ASL solution. Following subplantar (footpad) injections in rats ASL solution induced paw-lick/lift responses in all rats whereas ASL-P188L caused no response (n=8). PEGylation showed less benefit possibly due to the drug 'leakage'. In conclusion, drug precipitation in the vein and the drug mild irritancy may both contribute to the occurrence of phlebitis caused by the ASL solution, and could both be prevented by encapsulation of the drug in liposomes. Poloxamer 188 appeared to be able to 'seal' the liposomal membrane and enhance drug retention. The study also highlighted the importance of bio-relevant in vitro release study in formulation screening.
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Affiliation(s)
- Wenli Zhang
- School of Pharmacy, The University of Auckland, Private Bag 92019, Auckland, New Zealand; China Pharmaceutical University, Nanjing 210009, PR China
| | - Guangji Wang
- China Pharmaceutical University, Nanjing 210009, PR China
| | - Esther See
- School of Pharmacy, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - John P Shaw
- School of Pharmacy, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Bruce C Baguley
- Auckland Cancer Society Research Centre, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Jianping Liu
- China Pharmaceutical University, Nanjing 210009, PR China.
| | - Satya Amirapu
- Anatomy, Medical Sciences, The University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Zimei Wu
- School of Pharmacy, The University of Auckland, Private Bag 92019, Auckland, New Zealand.
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35
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Development and characterization of new enzymatic modified hybrid calcium carbonate microparticles to obtain nano-architectured surfaces for enhanced drug loading. J Colloid Interface Sci 2015; 439:76-87. [DOI: 10.1016/j.jcis.2014.10.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 10/07/2014] [Accepted: 10/09/2014] [Indexed: 01/09/2023]
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36
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Ciprofloxacin Metalloantibiotic: An Effective Antibiotic with an Influx Route Strongly Dependent on Lipid Interaction? J Membr Biol 2014; 248:125-36. [DOI: 10.1007/s00232-014-9749-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 10/29/2014] [Indexed: 12/01/2022]
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37
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Natarajan JV, Nugraha C, Ng XW, Venkatraman S. Sustained-release from nanocarriers: a review. J Control Release 2014; 193:122-38. [DOI: 10.1016/j.jconrel.2014.05.029] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/10/2014] [Accepted: 05/17/2014] [Indexed: 12/18/2022]
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38
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Liposomal antibiotic formulations for targeting the lungs in the treatment of Pseudomonas aeruginosa. Ther Deliv 2014; 5:409-27. [PMID: 24856168 DOI: 10.4155/tde.14.13] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Pseudomonas aeruginosa is a Gram-negative bacterium that causes serious lung infections in cystic fibrosis, non-cystic fibrosis bronchiectasis, immunocompromised, and mechanically ventilated patients. The arsenal of conventional antipseudomonal antibiotic drugs include the extended-spectrum penicillins, cephalosporins, carbapenems, monobactams, polymyxins, fluoroquinolones, and aminoglycosides but their toxicity and/or increasing antibiotic resistance are of particular concern. Improvement of existing therapies against Pseudomonas aeruginosa infections involves the use of liposomes - artificial phospholipid vesicles that are biocompatible, biodegradable, and nontoxic and able to entrap and carry hydrophilic, hydrophobic, and amphiphilic molecules to the site of action. The goal of developing liposomal antibiotic formulations is to improve their therapeutic efficacy by reducing drug toxicity and/or by enhancing the delivery and retention of antibiotics at the site of infection. The focus of this review is to appraise the current progress of the development and application of liposomal antibiotic delivery systems for the treatment pulmonary infections caused by P. aeruginosa.
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39
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Islan GA, Mukherjee A, Castro GR. Development of biopolymer nanocomposite for silver nanoparticles and Ciprofloxacin controlled release. Int J Biol Macromol 2014; 72:740-50. [PMID: 25256547 DOI: 10.1016/j.ijbiomac.2014.09.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 08/12/2014] [Accepted: 09/07/2014] [Indexed: 01/16/2023]
Abstract
Screening of biopolymeric gel beads containing Silver NanoParticles (Ag-NPs) stabilized in Guar Gum Alkyl Amine (GGAA) and Ciprofloxacin (Cip) was carried out in order to obtain a novel nanocomposite with controlled release profile of both antimicrobians. The selected matrix composed of Alginate/High Methoxyl Pectin (HMP)/GGAA (4:4:1) was able to co-incorporate Ag-NPs and Cip with encapsulation efficiency higher than 70%. SEM images revealed good cohesivity and compatibility between the biopolymers and the cargos. Beads provided protection against Ag-NPs degradation at acidic pHs and HMP would played a key role providing hydrophobic regions. While Cip release profile showed a pH independent diffusional process, Ag-NPs release was restricted to matrix erodability. Calcium quelating agents and/or alginate degrading enzymes could modulate the release profile. The bactericidal activity of beads was tested in liquid medium, showing cooperative effects between the antimicrobials against Pseudomonas aeruginosa, Escherichia coli, Bacillus cereus and Staphylococcus aureus. TEM images confirmed interaction of Ag-NPs with bacterial surfaces followed by membrane damage. Results suggested the nanocomposite matrix as a promising system for oral treatment of intestinal infectious diseases caused by multidrug resistant and unknown microorganisms, since both Cip and Ag-NPs would be able to reach intestine in the active form.
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Affiliation(s)
- German A Islan
- Nanobiomaterials Laboratory, Institute of Applied Biotechnology CINDEFI (UNLP-CONICET, CCT La Plata), Dept of Chemistry, School of Sciences, Universidad Nacional de La Plata, Calle 47y 115, La Plata 1900, Argentina
| | - Arup Mukherjee
- Department of Chemical Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India
| | - Guillermo R Castro
- Nanobiomaterials Laboratory, Institute of Applied Biotechnology CINDEFI (UNLP-CONICET, CCT La Plata), Dept of Chemistry, School of Sciences, Universidad Nacional de La Plata, Calle 47y 115, La Plata 1900, Argentina.
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40
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Kumar GP, Phani A, Prasad R, Sanganal JS, Manali N, Gupta R, Rashmi N, Prabhakara G, Salins CP, Sandeep K, Raju D. Polyvinylpyrrolidone oral films of enrofloxacin: Film characterization and drug release. Int J Pharm 2014; 471:146-52. [DOI: 10.1016/j.ijpharm.2014.05.033] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 04/17/2014] [Accepted: 05/18/2014] [Indexed: 11/27/2022]
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41
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Hatai J, Bandyopadhyay S. Altered selectivity of a dipicolylamine based metal ion receptor. Chem Commun (Camb) 2014; 50:64-6. [DOI: 10.1039/c3cc46285d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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42
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Martínez YN, Cavello I, Hours R, Cavalitto S, Castro GR. Immobilized keratinase and enrofloxacin loaded on pectin PVA cryogel patches for antimicrobial treatment. BIORESOURCE TECHNOLOGY 2013; 145:280-284. [PMID: 23558181 DOI: 10.1016/j.biortech.2013.02.063] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Revised: 02/18/2013] [Accepted: 02/20/2013] [Indexed: 06/02/2023]
Abstract
A keratinase isolated from Paecilomyces lilacinus (LPS #876) was tested against proteins present in the skin but the high enzyme activity was detected on collagen. Keratinase was physically immobilized onto PVA-pectin cryogels and enzyme release was 20.8±2.1%, 63.8±0.2%, 41.5±3.5% and 26.0±3.5% in cryogels containing pectins with esterification degrees (DE) 33.0%, 55.0%, 62.7% and 71.7% respectively at 37°C after 3h incubation. In presence of 0.75 M NaCl, the percentage of enzyme release changed to: 57.5±1.5, 65.8±3.8, 57.3±0.2 and 34.0±4.0 for the four pectins respectively. In-vitro studies of enrofloxacin release from PVA-pectin cryogels at pH close to the human skin (pH=5.5) showed 15.0% free antibiotic following first order kinetic at 37°C after 5h incubation. However, in the presence of keratinase only 6.9% of enrofloxacin was released under the same experimental conditions.
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Affiliation(s)
- Yanina N Martínez
- Institute of Applied Biotechnology (CINDEFI, UNLP-CONICET-CCT La Plata), School of Sciences, Universidad Nacional de La Plata, La Plata, Argentina
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Lipka D, Gubernator J, Filipczak N, Barnert S, Süss R, Legut M, Kozubek A. Vitamin C-driven epirubicin loading into liposomes. Int J Nanomedicine 2013; 8:3573-85. [PMID: 24101870 PMCID: PMC3790897 DOI: 10.2147/ijn.s47745] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The encapsulation of anticancer drugs in a liposome structure protects the drug during circulation and increases drug accumulation in the cancer tissue and antitumor activity while decreasing drug toxicity. This paper presents a new method of active drug loading based on a vitamin C pH/ion gradient. Formulations were characterized in terms of the following parameters: optimal external pH, time and drug-to-lipid ratio for the purpose of remote loading, and in vitro stability. In the case of the selected drug, epirubicin (EPI), its coencapsulation increases its anticancer activity through a possibly synergistic effect previously reported by other groups for a free nonencapsulated drug/vitamin C cocktail. The method also has another advantage over other remote-loading methods: it allows faster drug release through liposome destabilization at the tumor site, thanks to the very good solubility of the EPI vitamin C salt, as seen on cryogenic transmission electron microscopy images. This influences the drug-release process and increases the anticancer activity of the liposome formulation. The liposomes are characterized as stable, with very good pharmacokinetics (half-life 18.6 hours). The antitumor activity toward MCF-7 and 4T-1 breast cancer cells was higher in the case of EPI loaded via our gradient than via an ammonium sulfate gradient. Finally, the EPI liposomal formulation and the free drug were tested using the murine 4T-1 breast cancer model. The antitumor activity of the encapsulated drug was confirmed (tumor-growth inhibition over 40% from day 16 until the end of the experiment), and the free drug was shown to have no anticancer activity at the tested dose.
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Affiliation(s)
- Dominik Lipka
- Department of Lipids and Liposomes, University of Wrocław, Wrocław, Poland
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Islan GA, Bosio VE, Castro GR. Alginate lyase and ciprofloxacin co-immobilization on biopolymeric microspheres for cystic fibrosis treatment. Macromol Biosci 2013; 13:1238-48. [PMID: 23966229 DOI: 10.1002/mabi.201300134] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 04/25/2013] [Indexed: 11/11/2022]
Abstract
A new formulation is described based on biopolymeric microspheres containing alginate lyase (AL) and ciprofloxacin (Cip) for sustainable oral delivery in CF patients. Alginate (ALG) and high-methoxyl pectin (HMP) are selected as the biopolymers to develop a composite matrix. ALG microspheres coated with HMP and ALG-HMP blend are gelled in water/organic solvents mixtures, obtaining Cip encapsulations from 46.0 to 100.0%. ALG-HMP shows a Cip sustainable release profile and is able to encapsulate 90.0% of AL, showing 76.0% enzyme activity after release under simulated intestinal conditions. The developed system is a promising delivery carrier to treat chronic infection of Pseudomonas aeruginosa and to reduce the viscoelasticity of the mucus accumulated into intestine of CF patients.
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Affiliation(s)
- German A Islan
- Nanobiomaterials Laboratory, Applied Biotechnology Institute (CINDEFI, UNLP-CONICET CCT La Plata) - School of Sciences, Universidad Nacional de La Plata, Calle 47 y 115, CP 1900, La Plata, Argentina
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Turcu I, Mic M. Size Dependence of Molecular Self-Assembling in Stacked Aggregates. 2. Heat Exchange Effects. J Phys Chem B 2013; 117:9083-93. [DOI: 10.1021/jp403768x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ioan Turcu
- Department of Molecular and Biomolecular Physics, National Institute of Isotopic and Molecular Technology, 400293 Cluj-Napoca, Romania
| | - Mihaela Mic
- Department of Molecular and Biomolecular Physics, National Institute of Isotopic and Molecular Technology, 400293 Cluj-Napoca, Romania
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Improvement of the pharmacokinetics and in vivo antibacterial efficacy of a novel type IIa topoisomerase inhibitor by formulation in liposomes. Antimicrob Agents Chemother 2013; 57:4816-24. [PMID: 23877679 DOI: 10.1128/aac.00163-13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Several useful properties of liposome-based formulations of various existing antibacterial drugs have been reported. These properties include lower MICs, improved pharmacokinetics, lower toxicity, selective distribution to infected tissues, and enhanced in vivo efficacy. Here we report in vivo studies of a liposomal formulation of a member of a novel class of antibacterial type II topoisomerase inhibitors, others of which have progressed to early phases of clinical trials. The free (i.e., nonliposomal) compound has broad-spectrum MICs but suboptimal pharmacokinetics in rats and mice, characterized by a high volume of distribution and rapid clearance. The liposomal formulation of the compound had essentially unchanged MICs but greatly reduced volume of distribution and clearance in rats and mice. In an in vivo mouse model of Staphylococcus aureus infection of one thigh, the liposomal compound localized preferentially to the infected thigh, whereas the free compound showed no preference for the infected versus the uninfected thigh. Most importantly, the liposomal compound had enhanced efficacy at clearing the infection compared with the free compound. Delivery of this class of compounds as liposomal formulations may offer clinical advantages compared with free compounds.
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Wąsik S, Arabski M, Drulis-Kawa Z, Gubernator J. Laser interferometry analysis of ciprofloxacin and ampicillin diffusion from liposomal solutions to water phase. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2013; 42:549-58. [PMID: 23604440 PMCID: PMC3674336 DOI: 10.1007/s00249-013-0904-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 03/20/2013] [Accepted: 04/10/2013] [Indexed: 11/24/2022]
Abstract
The paper presents experimental investigations of diffusion of antibiotics (ciprofloxacin or ampicillin) into the water phase from mixtures of neutral or negatively charged liposomes, and antibiotic-liposome interactions. Using the laser interferometry technique, the amounts and fluxes of released antibiotics, concentration field evolution, and the velocity of the concentration boundary layer's "growth" were determined. To avoid the limitations of membranes, a measurement system without the artificial boundary of phases with a free water-solution interface has been proposed. It was found that the diffusion of anionic and neutral liposomes into the water phase was insignificant and mainly the diffusion of antibiotics was measured. Differences in the diffusion kinetics of ciprofloxacin and ampicillin from liposomal solutions to the water phase were observed. Ampicillin diffused more efficiently than ciprofloxacin regardless of the liposomal solution type. Moreover, the amount of ampicillin and ciprofloxacin released from the anionic liposomal phase was higher than that from the neutral one. Our results confirm that ciprofloxacin at neutral pH shows little tendency to bind neutral liposomes. Additionally, it was also observed that ciprofloxacin disrupts negatively charged liposomes as a final effect of antibiotic-lipid interactions.
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Affiliation(s)
- Sławomir Wąsik
- Department of Molecular Physics, Institute of Physics, Jan Kochanowski University, Świętokrzyska 15, 25-406 Kielce, Poland.
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48
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Allen TM, Cullis PR. Liposomal drug delivery systems: from concept to clinical applications. Adv Drug Deliv Rev 2013; 65:36-48. [PMID: 23036225 DOI: 10.1016/j.addr.2012.09.037] [Citation(s) in RCA: 2882] [Impact Index Per Article: 262.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 09/10/2012] [Accepted: 09/20/2012] [Indexed: 02/06/2023]
Abstract
The first closed bilayer phospholipid systems, called liposomes, were described in 1965 and soon were proposed as drug delivery systems. The pioneering work of countless liposome researchers over almost 5 decades led to the development of important technical advances such as remote drug loading, extrusion for homogeneous size, long-circulating (PEGylated) liposomes, triggered release liposomes, liposomes containing nucleic acid polymers, ligand-targeted liposomes and liposomes containing combinations of drugs. These advances have led to numerous clinical trials in such diverse areas as the delivery of anti-cancer, anti-fungal and antibiotic drugs, the delivery of gene medicines, and the delivery of anesthetics and anti-inflammatory drugs. A number of liposomes (lipidic nanoparticles) are on the market, and many more are in the pipeline. Lipidic nanoparticles are the first nanomedicine delivery system to make the transition from concept to clinical application, and they are now an established technology platform with considerable clinical acceptance. We can look forward to many more clinical products in the future.
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Cramariuc O, Rog T, Javanainen M, Monticelli L, Polishchuk AV, Vattulainen I. Mechanism for translocation of fluoroquinolones across lipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2012; 1818:2563-71. [DOI: 10.1016/j.bbamem.2012.05.027] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Revised: 05/21/2012] [Accepted: 05/25/2012] [Indexed: 11/24/2022]
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50
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Wang Q, Rojas EC, Papadopoulos KD. Cationic liposomes in double emulsions for controlled release. J Colloid Interface Sci 2012; 383:89-95. [DOI: 10.1016/j.jcis.2012.06.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Revised: 06/14/2012] [Accepted: 06/15/2012] [Indexed: 10/28/2022]
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