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Özcan Bülbül E, Üstündağ Okur N, Mısırlı D, Cevher E, Tsanaktsis V, Bingöl Özakpınar Ö, Siafaka PI. Applying quality by design approach for the determination of potent paclitaxel loaded poly(lactic acid) based implants for localized tumor drug delivery. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2067538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ece Özcan Bülbül
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istinye University, Istanbul, Turkey
| | - Neslihan Üstündağ Okur
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey
| | - Duygu Mısırlı
- Department of Biochemistry, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey
| | - Erdal Cevher
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul, Turkey
| | - Vasilios Tsanaktsis
- Faculty of Sciences, School of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Panoraia I. Siafaka
- School of Health Studies, KES College, Nicosia, Cyprus
- Faculty of Pharmacy, European University Cyprus, Nicosia, Cyprus
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Osi B, Khoder M, Al-Kinani AA, Alany RG. Pharmaceutical, Biomedical and Ophthalmic Applications of Biodegradable Polymers (BDPs): Literature and Patent Review. Pharm Dev Technol 2022; 27:341-356. [PMID: 35297285 DOI: 10.1080/10837450.2022.2055063] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In the last few decades, the interest in biodegradable materials for biomedical applications has increased significantly. Both natural and synthetic biodegradable polymers (BDPs) have been broadly explored for various biomedical applications. These include sutures and wound dressings, screws for bone fracture, scaffolds in tissue engineering, implants, and other carriers for targeted and sustained release drug delivery. Owing to their unique characteristics, including their surface charge variable copolymer block and composition and film-forming properties, BDPs have been widely used as favourable materials for ophthalmic drug delivery. Mucoadhesive BDPs have been used in ophthalmic formulations to prolong drug retention time and improve bioavailability, allowing ophthalmic controlled release systems to design. Furthermore, BDPs-based implants, microneedles, and injectable nano- and micro-particles enabled ocular posterior segment targeting and, most importantly, circumvented the need for removing the delivery systems after application. This review outlines the major advances of BDPs and highlights the latest progress of employing natural and synthetic BDPs for various biomedical applications, emphasising the treatment and management of ophthalmic conditions.
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Affiliation(s)
- Barzan Osi
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, London, United Kingdom
| | - Mouhamad Khoder
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, London, United Kingdom
| | - Ali A Al-Kinani
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, London, United Kingdom
| | - Raid G Alany
- Drug Discovery, Delivery and Patient Care (DDDPC) Theme, School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston upon Thames, London, United Kingdom.,School of Pharmacy, The University of Auckland, Auckland, New Zealand
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Adrianto MF, Annuryanti F, Wilson CG, Sheshala R, Thakur RRS. In vitro dissolution testing models of ocular implants for posterior segment drug delivery. Drug Deliv Transl Res 2021; 12:1355-1375. [PMID: 34382178 PMCID: PMC9061687 DOI: 10.1007/s13346-021-01043-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2021] [Indexed: 12/19/2022]
Abstract
The delivery of drugs to the posterior segment of the eye remains a tremendously difficult task. Prolonged treatment in conventional intravitreal therapy requires injections that are administered frequently due to the rapid clearance of the drug molecules. As an alternative, intraocular implants can offer drug release for long-term therapy. However, one of the several challenges in developing intraocular implants is selecting an appropriate in vitro dissolution testing model. In order to determine the efficacy of ocular implants in drug release, multiple in vitro test models were emerging. While these in vitro models may be used to analyse drug release profiles, the findings may not predict in vivo retinal drug exposure as this is influenced by metabolic and physiological factors. This review considers various types of in vitro test methods used to test drug release of ocular implants. Importantly, it discusses the challenges and factors that must be considered in the development and testing of the implants in an in vitro setup.
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Affiliation(s)
- Muhammad Faris Adrianto
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Airlangga, Surabaya, East Java, 60115, Indonesia
| | - Febri Annuryanti
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Airlangga, Surabaya, East Java, 60115, Indonesia
| | - Clive G Wilson
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, Scotland
| | - Ravi Sheshala
- Department of Pharmaceutics, Faculty of Pharmacy, Universiti Teknologi MARA Selangor, Puncak Alam Campus, 42300, Bandar Puncak Alam, Kuala Selangor, Malaysia
| | - Raghu Raj Singh Thakur
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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Bunton CM, Bassampour ZM, Boothby JM, Smith AN, Rose JV, Nguyen DM, Ware TH, Csaky KG, Lippert AR, Tsarevsky NV, Son DY. Degradable Silyl Ether–Containing Networks from Trifunctional Thiols and Acrylates. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01967] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Caleb M. Bunton
- Department of Chemistry, Center for Drug Discovery, Design and Delivery (CD4), Southern Methodist University, Dallas, Texas 75205, United States
| | - Zahra M. Bassampour
- Department of Chemistry, Center for Drug Discovery, Design and Delivery (CD4), Southern Methodist University, Dallas, Texas 75205, United States
| | - Jennifer M. Boothby
- Department of Bioengineering, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Ashanti N. Smith
- Department of Chemistry, Center for Drug Discovery, Design and Delivery (CD4), Southern Methodist University, Dallas, Texas 75205, United States
| | - Joseph V. Rose
- Department of Chemistry, Center for Drug Discovery, Design and Delivery (CD4), Southern Methodist University, Dallas, Texas 75205, United States
| | - Daphne M. Nguyen
- Department of Chemistry, Center for Drug Discovery, Design and Delivery (CD4), Southern Methodist University, Dallas, Texas 75205, United States
| | - Taylor H. Ware
- Department of Bioengineering, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Karl G. Csaky
- Retina Foundation of the Southwest, Dallas, Texas 75231, United States
| | - Alexander R. Lippert
- Department of Chemistry, Center for Drug Discovery, Design and Delivery (CD4), Southern Methodist University, Dallas, Texas 75205, United States
| | - Nicolay V. Tsarevsky
- Department of Chemistry, Center for Drug Discovery, Design and Delivery (CD4), Southern Methodist University, Dallas, Texas 75205, United States
| | - David Y. Son
- Department of Chemistry, Center for Drug Discovery, Design and Delivery (CD4), Southern Methodist University, Dallas, Texas 75205, United States
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Souto EB, Dias-Ferreira J, López-Machado A, Ettcheto M, Cano A, Camins Espuny A, Espina M, Garcia ML, Sánchez-López E. Advanced Formulation Approaches for Ocular Drug Delivery: State-Of-The-Art and Recent Patents. Pharmaceutics 2019; 11:pharmaceutics11090460. [PMID: 31500106 PMCID: PMC6781321 DOI: 10.3390/pharmaceutics11090460] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/23/2019] [Accepted: 08/26/2019] [Indexed: 12/17/2022] Open
Abstract
The eye presents extensive perspectives and challenges for drug delivery, mainly because of the extraordinary capacity, intrinsic to this path, for drugs to permeate into the main circulatory system and also for the restrictions of the ocular barriers. Depending on the target segment of the eye, anterior or posterior, the specifications are different. The ocular route experienced in the last decades a lot of progresses related with the development of new drugs, improved formulations, specific-designed delivery and even new routes to administer a drug. Concomitantly, new categories of materials were developed and adapted to encapsulate drugs. With such advances, a multiplicity of parameters became possible to be optimized as the increase in bioavailability and decreased toxic effects of medicines. Also, the formulations were capable to easily adhere to specific tissues, increase the duration of the therapeutic effect and even target the delivery of the treatment. The ascending of new delivery systems for ocular targeting is a current focus, mainly because of the capacity to extend the normal time during which the drug exerts its therapeutic effect and, so, supplying the patients with a product which gives them fewer side effects, fewer number of applications and even more effective outcomes to their pathologies, surpassing the traditionally-used eye drops. Depending on the systems, some are capable of increasing the duration of the drug action as gels, emulsions, prodrugs, liposomes, and ocular inserts with hydrophilic properties, improving the absorption by the cornea. In parallel, other devices use as a strategy the capacity to sustain the release of the carried drugs by means of erodible and non-erodible matrices. This review discusses the different types of advanced formulations used for ocular delivery of therapeutics presenting the most recent patents according to the clinical applications.
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Affiliation(s)
- Eliana B Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, 3000-458 Coimbra, Portugal.
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057 Braga, Portugal.
| | - João Dias-Ferreira
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, 3000-458 Coimbra, Portugal
| | - Ana López-Machado
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Miren Ettcheto
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), University of Barcelona, 08028 Barcelona, Spain
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Amanda Cano
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), University of Barcelona, 08028 Barcelona, Spain
| | - Antonio Camins Espuny
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), University of Barcelona, 08028 Barcelona, Spain
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Marta Espina
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Maria Luisa Garcia
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), University of Barcelona, 08028 Barcelona, Spain
| | - Elena Sánchez-López
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, 3000-458 Coimbra, Portugal.
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain.
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain.
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), University of Barcelona, 08028 Barcelona, Spain.
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Park CW, Lee HJ, Oh DW, Kang JH, Han CS, Kim DW. Preparation and in vitro/in vivo evaluation of PLGA microspheres containing norquetiapine for long-acting injection. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:711-719. [PMID: 29670329 PMCID: PMC5896679 DOI: 10.2147/dddt.s151437] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background Norquetiapine (N-desalkyl quetiapine, NQ) is an active metabolite of quetiapine with stable pharmacokinetic and pharmacological properties. However, its short half-life is a drawback for clinical applications, and long-acting formulations are required. Purpose The objectives of this study were to prepare improved entrapment efficiency NQ freebase microspheres by the solvent evaporation method with poly(d,l-lactic-co-glycolic acid) (PLGA) as a release modulator and to evaluate their physicochemical and in vitro/in vivo release properties. Methods NQ freebase PLGA (1:5 w/w) formulations were prepared by the oil-in-water (o/w) emulsion–solvent evaporation method. A solution of the drug and PLGA in 9:1 v/v dichloromethane:ethanol was mixed with 0.2% polyvinyl alcohol and homogenized at 2,800 rpm. The emulsion was stirred for 3 h to dilute and evaporate the solvent. After that, the resulting product was freeze-dried. Drug-loading capacity was measured by the validated RP-HPLC method. The surface morphology of the microspheres was observed by scanning electron microscopy (SEM), and the physicochemical properties were evaluated by differential scanning calorimetry, powder X-ray diffraction, and Fourier-transform infrared spectroscopy particle size distribution. The in vitro dissolution test was performed using a rotary shaking bath at 37°C, with constant shaking at 50 rpm in sink condition. Results The NQ freebase microspheres prepared by o/w emulsion-solvent evaporation showed over 30% efficiency. NQ was confirmed to be amorphous in the microspheres by powder X-ray diffraction and differential scanning calorimetry. Special chemical interaction in the microspheres was not observed by FT-IR. The in vitro dissolution test demonstrated that the prepared microspheres’ release properties were maintained for more than 20 days. The in vivo test also confirmed that the particles’ long acting properties were maintained. Therefore, good in vitro–in vivo correlation was established. Conclusion In this study, NQ freebase-PLGA microspheres showed potential for the treatment of schizophrenia for long-periods.
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Affiliation(s)
- Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Hyo-Jung Lee
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Dong-Won Oh
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Ji-Hyun Kang
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Chang-Soo Han
- College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - Dong-Wook Kim
- Department of Pharmaceutical Engineering, Cheongju University, Cheongju, Republic of Korea
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Fernandes-Cunha GM, Rezende CMF, Mussel WN, da Silva GR, de L Gomes EC, Yoshida MI, Fialho SL, Goes AM, Gomes DA, de Almeida Vitor RW, Silva-Cunha A. Anti-Toxoplasma activity and impact evaluation of lyophilization, hot molding process, and gamma-irradiation techniques on CLH-PLGA intravitreal implants. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:10. [PMID: 26676856 DOI: 10.1007/s10856-015-5621-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 11/05/2015] [Indexed: 06/05/2023]
Abstract
Intraocular delivery systems have been developed to treat many eye diseases, especially those affecting the posterior segment of the eye. However, ocular toxoplasmosis, the leading cause of infectious posterior uveitis in the world, still lacks an effective treatment. Therefore, our group developed an intravitreal polymeric implant to release clindamycin, a potent anti-Toxoplasma antibiotic. In this work, we used different techniques such as differential scanning calorimetry, thermogravimetry, X-ray diffraction, scanning electron microscopy, and fourier-transform infrared spectroscopy to investigate drug/polymer properties while manufacturing the delivery system. We showed that the lyophilization, hot molding process, and sterilization by gamma irradiation did not change drug/polymer physical-chemistry properties. The drug was found to be homogeneously dispersed into the poly lactic-co-glycolic acid (PLGA) chains and the profile release was characterized by an initial burst followed by prolonged release. The drug profile release was not modified after gamma irradiation and non-covalent interaction was found between the drug and the PLGA. We also observed the preservation of the drug activity by showing the potent anti-Toxoplasma effect of the implant, after 24-72 h in contact with cells infected by the parasite, which highlights this system as an alternative to treat toxoplasmic retinochoroiditis.
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Affiliation(s)
- Gabriella M Fernandes-Cunha
- Faculty of Pharmacy of the Federal University of Minas Gerais, Av. Presidente Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil.
| | - Cíntia M F Rezende
- Department of Biochemistry and Immunology Department, Institute of Biological Science of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Wagner N Mussel
- Chemistry Department of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Gisele R da Silva
- School of Pharmacy, Federal University of Sao Joao del-Rei, Divinópolis, MG, Bazil
| | - Elionai C de L Gomes
- Laboratory of Thermal Analysis, Chemistry Department of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria I Yoshida
- Laboratory of Thermal Analysis, Chemistry Department of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Alfredo M Goes
- Department of Biochemistry and Immunology Department, Institute of Biological Science of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Dawison A Gomes
- Department of Biochemistry and Immunology Department, Institute of Biological Science of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ricardo W de Almeida Vitor
- Department of Parasitology, Institute of Biological Science of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Armando Silva-Cunha
- Faculty of Pharmacy of the Federal University of Minas Gerais, Av. Presidente Antônio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
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Tamaddon L, Mostafavi SA, Karkhane R, Riazi-Esfahani M, Dorkoosh FA, Rafiee-Tehrani M. Thermoanalytical characterization of clindamycin-loaded intravitreal implants prepared by hot melt extrusion. Adv Biomed Res 2015; 4:147. [PMID: 26322295 PMCID: PMC4549919 DOI: 10.4103/2277-9175.161563] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 12/01/2013] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND The aim of the present study was to evaluate a non-destructive fabrication method in for the development of sustained-release poly (L, D-lactic acid)-based biodegradable clindamycin phosphate implants for the treatment of ocular toxoplasmosis. MATERIALS AND METHODS The rod-shaped intravitreal implants with an average length of 5 mm and a diameter of 0.4 mm were evaluated for their physicochemical parameters. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC), Fourier-transform infrared (FTIR), and nuclear magnetic resonance (1H NMR) studies were employed in order to study the characteristics of these formulations. RESULTS Drug content uniformity test confirmed the uniformity in different implant batches. Furthermore, the DSC, FTIR, and 1H NMR studies proved that the fabrication process did not have any destructive effects either on the drug or on the polymer structures. CONCLUSION These studies showed that the developed sustained-release implants could be of interest for long-term sustained intraocular delivery of clindamycin, which can provide better patient compliance and also have good potential in terms of industrial feasibility.
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Affiliation(s)
- Lana Tamaddon
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan Pharmaceutical Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Seyed Abolfazl Mostafavi
- Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan Pharmaceutical Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Reza Karkhane
- Department of Ophthalmology, Eye Research Center, Farabi Eye Hospital, Tehran, Iran
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