1
|
Martin V, Francisca Bettencourt A, Santos C, Sousa Gomes P. Reviewing particulate delivery systems loaded with repurposed tetracyclines - From micro to nanoparticles. Int J Pharm 2024; 649:123642. [PMID: 38029863 DOI: 10.1016/j.ijpharm.2023.123642] [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: 09/07/2023] [Revised: 11/07/2023] [Accepted: 11/26/2023] [Indexed: 12/01/2023]
Abstract
Tetracyclines (TCs) are a class of broad-spectrum antibacterial agents recognized for their multifaceted properties, including anti-inflammatory, angiogenic and osteogenic effects. This versatility positions them as suitable candidates for drug repurposing, benefitting from well-characterized safety and pharmacological profiles. In the attempt to explore both their antibacterial and pleiotropic effects locally, innovative therapeutic strategies were set on engineering tetracycline-loaded micro and nanoparticles to tackle a vast number of clinical applications. Moreover, the conjoined drug carrier can function as an active component of the therapeutic approach, reducing off-target effects and accumulation, synergizing to an improvement of the therapeutic efficacy. In this comprehensive review we will critically evaluate recent advances involving the use of tetracyclines loaded onto micro- or nanoparticles, intended for biomedical applications, and discuss emerging approaches and current limitations associated with these drug carriers. Owing to their distinctive physical, chemical, and biological properties, these novel carriers have the potential to become a platform technology in personalized regenerative medicine and other therapeutic applications.
Collapse
Affiliation(s)
- Victor Martin
- BoneLab-Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal; LAQV/REQUIMTE, University of Porto, Praça Coronel Pacheco, 4050-453 Porto, Portugal.
| | - Ana Francisca Bettencourt
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Catarina Santos
- CQE Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; EST Setúbal, CDP2T, Instituto Politécnico de Setúbal, Campus IPS, 2910 Setúbal, Portugal
| | - Pedro Sousa Gomes
- BoneLab-Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal; LAQV/REQUIMTE, University of Porto, Praça Coronel Pacheco, 4050-453 Porto, Portugal
| |
Collapse
|
2
|
Paul M, Pramanik SD, Sahoo RN, Dey YN, Nayak AK. Dental delivery systems of antimicrobial drugs using chitosan, alginate, dextran, cellulose and other polysaccharides: A review. Int J Biol Macromol 2023; 247:125808. [PMID: 37460072 DOI: 10.1016/j.ijbiomac.2023.125808] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/20/2023] [Accepted: 07/01/2023] [Indexed: 07/24/2023]
Abstract
Dental caries, periodontal disease, and endodontic disease are major public health concerns worldwide due to their impact on individuals' quality of life. The present problem of dental disorders is the removal of the infection caused by numerous microbes, particularly, bacteria (both aerobes and anaerobes). The most effective method for treating and managing dental diseases appears to be the use of antibiotics or other antimicrobials, which are incorporated in some drug delivery systems. However, due to their insufficient bioavailability, poor availability for gastrointestinal absorption, and pharmacokinetics after administration via the oral route, many pharmaceutical medicines or natural bioactive substances have limited efficacy. During past few decades, a range of polysaccharide-based systems have been widely investigated for dental dug delivery. The polysaccharide-based carrier materials made of chitosan, alginate, dextran, cellulose and other polysaccharides have recently been spotlighted on the recent advancements in preventing, treating and managing dental diseases. The objective of the current review article is to present a brief comprehensive overview of the recent advancements in polysaccharide-based dental drug delivery systems for the delivery of different antimicrobial drugs.
Collapse
Affiliation(s)
- Mousumi Paul
- Department of Pharmacology, Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Durgapur 713206, West Bengal, India
| | - Siddhartha Das Pramanik
- Department of Biosciences and Bioengineering, Indian Institute Technology-Roorkee, Roorkee 247667, Uttarakhand, India
| | - Rudra Narayan Sahoo
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar 751003, Odisha, India
| | - Yadu Nandan Dey
- Department of Pharmacology, Dr. B.C. Roy College of Pharmacy and Allied Health Sciences, Durgapur 713206, West Bengal, India.
| | - Amit Kumar Nayak
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar 751003, Odisha, India.
| |
Collapse
|
3
|
Patel M, Jha A, Patel R. Potential application of PLGA microsphere for tissue engineering. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02562-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
4
|
Jain P, Garg A, Farooq U, Panda AK, Mirza MA, Noureldeen A, Darwish H, Iqbal Z. Preparation and quality by design assisted (Qb-d) optimization of bioceramic loaded microspheres for periodontal delivery of doxycycline hyclate. Saudi J Biol Sci 2021; 28:2677-2685. [PMID: 34025152 PMCID: PMC8117247 DOI: 10.1016/j.sjbs.2021.03.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/14/2021] [Accepted: 03/15/2021] [Indexed: 11/27/2022] Open
Abstract
PLGA (Lactic- co-glycolic acid) coated chitosan microspheres loaded with hydroxyapatite and doxycycline hyclate complex were developed in the present study for periodontal delivery. A modified single emulsion method was adopted for the development of microspheres. Formulation was optimized on the basis of particle size, drug loading and encapsulation efficiency with the central composite design using 23 factorial design. Microspheres were optimized and electron microscopy revealed their spherical shape and porous nature. In-vitro study showed initial burst and then sustained release behavior of the formulation for 14 days. Further, in-vitro antibacterial study performed on E. coli (ATCC-25922) and S. aureus (ATCC-29213) revealed concentration dependent activity. Also, in-vitro cyto-toxicity assessment ensures biocompatibility of the formulation with the fibroblast's cells. Overall, the quality by design assisted PLGA microspheres, demonstrated the desired attributes and were found suitable for periodontal drug delivery.
Collapse
Affiliation(s)
- Pooja Jain
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Abhinav Garg
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Uzma Farooq
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Amulya K. Panda
- Product Development Cell, National Institute of Immunology, New Delhi, India
| | - Mohd. Aamir Mirza
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Ahmed Noureldeen
- Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Hadeer Darwish
- Department of Biotechnology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Zeenat Iqbal
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| |
Collapse
|
5
|
Baybaş D, Serdaroğlu G, Semerci B. The composite microbeads of alginate, carrageenan, gelatin, and poly(lactic-co-glycolic acid): Synthesis, characterization and Density Functional Theory calculations. Int J Biol Macromol 2021; 181:322-338. [PMID: 33781812 DOI: 10.1016/j.ijbiomac.2021.03.128] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/15/2021] [Accepted: 03/22/2021] [Indexed: 10/21/2022]
Abstract
Binary (AC, AG), ternary (ACG, ACP, AGP), quaternary (ACGP) composite beads of alginate (A), carrageenan (C), gelatin (G), and poly (lactic-co-glycolic acid) (P) were prepared. The dried beads had a 700 μm average diameter. The microspheres with and without P were characterized by FT-IR, TGA/DTA, SEM, and PZC analysis. The results proved that the features of the composites were completely different from their bare components. Density Functional Theory (DFT) calculations were performed at the B3LYP/6-311++G** level to enlighten the elementary physical and chemical properties of A, C, P, and G compounds. The vibrational modes obtained by calculations were compared with those observed in the FT-IR spectra. The Frontier Molecular Orbital (FMO) analyses showed that the component G was the softer and had smaller energy gap than the other components and vice versa for component P. NBO (Natural Bond Orbital) analyses implied that the n → П* (resonance) interactions for components A, G, and P contributed to the lowering of the molecular stabilization, whereas that the n → σ* (anomeric) interactions were responsible for decreasing of the stabilization of the component. From the obtained results, these kinds of components can be hoped the promising materials for usage in the many scientific fields, especially in medicine and in drug design.
Collapse
Affiliation(s)
- Demet Baybaş
- Sivas Cumhuriyet University, Faculty of Science, Biochem. Dep., 58140 Sivas, Turkey.
| | | | - Buse Semerci
- Organized Industrial Zone, 2. Section, 5. Cad., No: 10, Sivas 58060, Turkey
| |
Collapse
|
6
|
Kim D, Han TH, Hong SC, Park SJ, Lee YH, Kim H, Park M, Lee J. PLGA Microspheres with Alginate-Coated Large Pores for the Formulation of an Injectable Depot of Donepezil Hydrochloride. Pharmaceutics 2020; 12:E311. [PMID: 32244736 PMCID: PMC7238133 DOI: 10.3390/pharmaceutics12040311] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 03/27/2020] [Accepted: 03/30/2020] [Indexed: 11/25/2022] Open
Abstract
As the main symptom of Alzheimer's disease-related dementia is memory loss, patient compliance for donepezil hydrochloride (donepezil), administered as once-daily oral formulations, is poor. Thus, we aimed to design poly(lactic-co-glycolic acid) (PLGA) microspheres (MS) with alginate-coated large pores as an injectable depot of donepezil exhibiting sustained release over 2-3 weeks. The PLGA MS with large pores could provide large space for loading drugs with high loading capacity, and thereby sufficient amounts of drugs were considered to be delivered with minimal use of PLGA MS being injected. However, initial burst release of donepezil from the porous PLGA MS was observed. To reduce this initial burst release, the surface pores were closed with calcium alginate coating using a spray-ionotropic gelation method. The final pore-closed PLGA MS showed in vitro sustained release for approximately 3 weeks, and the initial burst release was remarkably decreased by the calcium alginate coating. In the prediction of plasma drug concentration profiles using convolution method, the mean residence time of the pore-closed PLGA MS was 2.7-fold longer than that of the porous PLGA MS. Therefore, our results reveal that our pore-closed PLGA MS formulation is a promising candidate for the treatment of dementia with high patient compliance.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Jaehwi Lee
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea; (D.K.); (T.H.H.); (S.-C.H.); (S.J.P.); (Y.H.L.); (H.K.); (M.P.)
| |
Collapse
|
7
|
Kloster AP, Lourenço Neto N, Costa SAD, Oliveira TM, Oliveira RCD, Machado MAAM. In Vitro Antimicrobial Effect of Bioadhesive Oral Membrane with Chlorhexidine Gel. Braz Dent J 2019; 29:354-358. [PMID: 30462761 DOI: 10.1590/0103-6440201801743] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 02/23/2018] [Indexed: 11/22/2022] Open
Abstract
This study aimed to evaluate in vitro the antimicrobial effect of a bioadhesive chitosan-based oral membrane with chlorhexidine for local treatment of infections in the oral tissues. Five oral membranes of different compositions were tested: 5% chitosan (G1); 5% chitosan ± 0.2% chlorhexidine (G2), 5% chitosan ± 0.6% chlorhexidine (G3), 5% chitosan ± 1.0% chlorhexidine (G4), and 5% chitosan ± 2.0% chlorhexidine (G5). Also, five gel types were tested according to the following compositions: 5% chitosan gel (G6), 0.2% chlorhexidine gel (G7), 2.0% chlorhexidine gel (G8), 5% chitosan gel ± 0.2% chlorhexidine gel (G9), and 5% chitosan gel ± 2.0% chlorhexidine gel (G10). The antimicrobial action of the samples was tested against Candida albicans and Streptococcus mutans through antibiogram by measuring the inhibition halos. Data were statistically analyzed by Kruskal-Wallis and one-way ANOVA followed by Tukey test (p<0.05). The 2.0% chlorhexidine membrane (G5) and the disks containing 2.0% chlorhexidine gel (G8) showed the greatest inhibition halos for both microorganisms, with statistically significant difference when compared to others tested groups (p=0.008) only for Candida albicans inhibitions results. All the other formulations of membranes and gels showed inhibition halos, but without statistically significant difference. The bioadhesive chitosan-based oral membrane with 2% chlorhexidine and 2% chlorhexidine gel were the most effective in inhibiting the tested microorganisms.
Collapse
Affiliation(s)
- Annelyze Podolan Kloster
- Department of Pediatric Dentistry, Orthodontics and Community Dentistry, Bauru Dental School, USP - Universidade de São Paulo, Bauru, SP, Brazil
| | - Natalino Lourenço Neto
- Department of Pediatric Dentistry, Orthodontics and Community Dentistry, Bauru Dental School, USP - Universidade de São Paulo, Bauru, SP, Brazil
| | - Silgia Aparecida da Costa
- Course on Textiles and Fashion, School of Arts, Sciences and Humanities, USP - Universidade de São Paulo, São Paulo, SP, Brazil
| | - Thais Marchini Oliveira
- Department of Pediatric Dentistry, Orthodontics and Community Dentistry, Bauru Dental School, USP - Universidade de São Paulo, Bauru, SP, Brazil
| | - Rodrigo Cardoso de Oliveira
- Department of Biological Sciences, Discipline of Biochemistry, Bauru Dental School, USP - Universidade de São Paulo, Bauru, SP, Brazil
| | | |
Collapse
|
8
|
Bee SL, Hamid ZAA, Mariatti M, Yahaya BH, Lim K, Bee ST, Sin LT. Approaches to Improve Therapeutic Efficacy of Biodegradable PLA/PLGA Microspheres: A Review. POLYM REV 2018. [DOI: 10.1080/15583724.2018.1437547] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Soo-Ling Bee
- School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - Z. A. Abdul Hamid
- School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - M. Mariatti
- School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - B. H. Yahaya
- Regenerative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Penang, Malaysia
| | - Keemi Lim
- School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - Soo-Tueen Bee
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, Kajang, Selangor, Malaysia
| | - Lee Tin Sin
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, Cheras, Kajang, Selangor, Malaysia
| |
Collapse
|
9
|
Gjoseva S, Geskovski N, Sazdovska SD, Popeski-Dimovski R, Petruševski G, Mladenovska K, Goracinova K. Design and biological response of doxycycline loaded chitosan microparticles for periodontal disease treatment. Carbohydr Polym 2018; 186:260-272. [PMID: 29455987 DOI: 10.1016/j.carbpol.2018.01.043] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 01/12/2018] [Accepted: 01/13/2018] [Indexed: 11/29/2022]
Abstract
The aim of this study was to develop chitosan (CS) microparticulated mucoadhesive drug delivery system (DDS) with improved therapeutic performance and biological responce. Ionotropic gelation/spray drying process was used for preparation of doxycycline hyclate (DOXY) loaded low and medium molecular weight (LMw and MMw) CS/sodium tripolyphosphate microparticles (CS/TPP MPs), further coated with ethyl cellulose (EC) using coacervation/solvent displacement technique. The relevant physico-chemical and biopharmaceutical properties were optimized using experimental design approach. Both coated and uncoated CS/TPP MPs showed high mucoadhesive potential and did not affect the viability of the tested epithelial cell line. The MPs induced slow and gradual apoptotic response in murine macrophage cell line RAW 264.7 and the observed effect depended upon formulation type and MP concentration. Biological effect of the CS-based MPs observed in our experiments point to synergism of the biological response of the carrier with the anti-inflammatory effect of DOXY.
Collapse
Affiliation(s)
- Silvana Gjoseva
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss Cyril and Methodius, Skopje, Republic of Macedonia
| | - Nikola Geskovski
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss Cyril and Methodius, Skopje, Republic of Macedonia
| | - Simona Dimchevska Sazdovska
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss Cyril and Methodius, Skopje, Republic of Macedonia
| | - Riste Popeski-Dimovski
- Institute of Physics, Faculty of Natural Sciences and Mathematics, University Ss Cyril and Methodius, Skopje, Republic of Macedonia
| | | | - Kristina Mladenovska
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss Cyril and Methodius, Skopje, Republic of Macedonia
| | - Katerina Goracinova
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, University of Ss Cyril and Methodius, Skopje, Republic of Macedonia.
| |
Collapse
|
10
|
Sun X, Xu C, Wu G, Ye Q, Wang C. Poly(Lactic-co-Glycolic Acid): Applications and Future Prospects for Periodontal Tissue Regeneration. Polymers (Basel) 2017; 9:E189. [PMID: 30970881 PMCID: PMC6432161 DOI: 10.3390/polym9060189] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/08/2017] [Accepted: 05/11/2017] [Indexed: 12/28/2022] Open
Abstract
Periodontal tissue regeneration is the ultimate goal of the treatment for periodontitis-affected teeth. The success of regenerative modalities relies heavily on the utilization of appropriate biomaterials with specific properties. Poly (lactic-co-glycolic acid) (PLGA), a synthetic aliphatic polyester, has been actively investigated for periodontal therapy due to its favorable mechanical properties, tunable degradation rates, and high biocompatibility. Despite the attractive characteristics, certain constraints associated with PLGA, in terms of its hydrophobicity and limited bioactivity, have led to the introduction of modification strategies that aimed to improve the biological performance of the polymer. Here, we summarize the features of the polymer and update views on progress of its applications as barrier membranes, bone grafts, and drug delivery carriers, which indicate that PLGA can be a good candidate material in the field of periodontal regenerative medicine.
Collapse
Affiliation(s)
- Xiaoyu Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan 430079, China.
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam 1081 HV, The Netherlands.
| | - Chun Xu
- Laboratory of Regenerative Dentistry, School of Dentistry, The University of Queensland, Brisbane 4006, Australia.
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam 1081 HV, The Netherlands.
| | - Qingsong Ye
- Laboratory of Regenerative Dentistry, School of Dentistry, The University of Queensland, Brisbane 4006, Australia.
| | - Changning Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan 430079, China.
| |
Collapse
|
11
|
Chaduc I, Reynaud E, Dumas L, Albertin L, D'Agosto F, Lansalot M. From well-defined poly( N -acryloylmorpholine)-stabilized nanospheres to uniform mannuronan- and guluronan-decorated nanoparticles by RAFT polymerization-induced self-assembly. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.08.072] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
12
|
Panith N, Assavanig A, Lertsiri S, Bergkvist M, Surarit R, Niamsiri N. Development of tunable biodegradable polyhydroxyalkanoates microspheres for controlled delivery of tetracycline for treating periodontal disease. J Appl Polym Sci 2016. [DOI: 10.1002/app.44128] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Nootchanartch Panith
- Department of Biotechnology Faculty of Science; Mahidol University; Bangkok 10400 Thailand
| | - Apinya Assavanig
- Department of Biotechnology Faculty of Science; Mahidol University; Bangkok 10400 Thailand
| | - Sittiwat Lertsiri
- Department of Biotechnology Faculty of Science; Mahidol University; Bangkok 10400 Thailand
| | - Magnus Bergkvist
- Colleges of Nanoscale Science and Engineering; SUNY Polytechnic Institute; Albany New York 12203
| | - Rudee Surarit
- Department of Oral Biology Faculty of Dentistry; Mahidol University; Bangkok 10400 Thailand
| | - Nuttawee Niamsiri
- Department of Biotechnology Faculty of Science; Mahidol University; Bangkok 10400 Thailand
| |
Collapse
|
13
|
Chen X, Wu G, Feng Z, Dong Y, Zhou W, Li B, Bai S, Zhao Y. Advanced biomaterials and their potential applications in the treatment of periodontal disease. Crit Rev Biotechnol 2015; 36:760-75. [PMID: 26004052 DOI: 10.3109/07388551.2015.1035693] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Periodontal disease is considered as a widespread infectious disease and the most common cause of tooth loss in adults. Attempts for developing periodontal disease treatment strategies, including drug delivery and regeneration approaches, provide a useful experimental model for the evaluation of future periodontal therapies. Recently, emerging advanced biomaterials including hydrogels, films, micro/nanofibers and particles, hold great potential to be utilized as cell/drug carriers for local drug delivery and biomimetic scaffolds for future regeneration therapies. In this review, first, we describe the pathogenesis of periodontal disease, including plaque formation, immune response and inflammatory reactions caused by bacteria. Second, periodontal therapy and an overview of current biomaterials in periodontal regenerative medicine have been discussed. Third, the roles of state-of-the-art biomaterials, including hydrogels, films, micro/nanofibers and micro/nanoparticles, developed for periodontal disease treatment and periodontal tissue regeneration, and their fabrication methods, have been presented. Finally, biological properties, including biocompatibility, biodegradability and immunogenicity of the biomaterials, together with their current applications strategies are given. Conclusive remarks and future perspectives for such advanced biomaterials are discussed.
Collapse
Affiliation(s)
- Xi Chen
- a State Key Laboratory of Military Stomatology, Department of Prosthetics , School of Stomatology, The Fourth Military Medical University , Xi'an , Shaanxi , P.R. China .,b Shaanxi Key Laboratory of Stomatology , Xi'an , Shaanxi , P.R. China , and
| | - Guofeng Wu
- a State Key Laboratory of Military Stomatology, Department of Prosthetics , School of Stomatology, The Fourth Military Medical University , Xi'an , Shaanxi , P.R. China .,b Shaanxi Key Laboratory of Stomatology , Xi'an , Shaanxi , P.R. China , and
| | - Zhihong Feng
- a State Key Laboratory of Military Stomatology, Department of Prosthetics , School of Stomatology, The Fourth Military Medical University , Xi'an , Shaanxi , P.R. China .,b Shaanxi Key Laboratory of Stomatology , Xi'an , Shaanxi , P.R. China , and
| | - Yan Dong
- a State Key Laboratory of Military Stomatology, Department of Prosthetics , School of Stomatology, The Fourth Military Medical University , Xi'an , Shaanxi , P.R. China .,b Shaanxi Key Laboratory of Stomatology , Xi'an , Shaanxi , P.R. China , and
| | - Wei Zhou
- a State Key Laboratory of Military Stomatology, Department of Prosthetics , School of Stomatology, The Fourth Military Medical University , Xi'an , Shaanxi , P.R. China .,b Shaanxi Key Laboratory of Stomatology , Xi'an , Shaanxi , P.R. China , and
| | - Bei Li
- b Shaanxi Key Laboratory of Stomatology , Xi'an , Shaanxi , P.R. China , and.,c State Key Laboratory of Military Stomatology, Center for Tissue Engineering , School of Stomatology, The Fourth Military Medical University , Xi'an , Shaanxi , P.R. China
| | - Shizhu Bai
- a State Key Laboratory of Military Stomatology, Department of Prosthetics , School of Stomatology, The Fourth Military Medical University , Xi'an , Shaanxi , P.R. China .,b Shaanxi Key Laboratory of Stomatology , Xi'an , Shaanxi , P.R. China , and
| | - Yimin Zhao
- a State Key Laboratory of Military Stomatology, Department of Prosthetics , School of Stomatology, The Fourth Military Medical University , Xi'an , Shaanxi , P.R. China .,b Shaanxi Key Laboratory of Stomatology , Xi'an , Shaanxi , P.R. China , and
| |
Collapse
|
14
|
Current Uses of Poly(lactic-co-glycolic acid) in the Dental Field: A Comprehensive Review. J CHEM-NY 2015. [DOI: 10.1155/2015/525832] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Poly(lactic-co-glycolic acid) or PLGA is a biodegradable polymer used in a wide range of medical applications. Specifically PLGA materials are also developed for the dental field in the form of scaffolds, films, membranes, microparticles, or nanoparticles. PLGA membranes have been studied with promising results, either alone or combined with other materials in bone healing procedures. PLGA scaffolds have been used to regenerate damaged tissues together with stem cell-based therapy. There is solid evidence that the development of PLGA microparticles and nanoparticles may be beneficial to a wide range of dental fields such as endodontic therapy, dental caries, dental surgery, dental implants, or periodontology. The aim of the current paper was to review the recent advances in PLGA materials and their potential uses in the dental field.
Collapse
|
15
|
Elsaid Ali AA, Taher M, Mohamed F. Microencapsulation of alpha-mangostin into PLGA microspheres and optimization using response surface methodology intended for pulmonary delivery. J Microencapsul 2013; 30:728-40. [PMID: 23631380 DOI: 10.3109/02652048.2013.788081] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Documented to exhibit cytotoxicity and poor oral bioavailability, alpha-mangostin was encapsulated into PLGA microspheres with optimization of formulation using response surface methodology. Mixed levels of four factors Face central composite design was employed to evaluate critical formulation variables. With 30 runs, optimized formula was 1% w/v polyvinyl alcohol, 1:10 ratio of oil to aqueous and sonicated at 2 and 5 min time for primary and secondary emulsion, respectively. Optimized responses for encapsulation efficiency, particle size and polydispersity index were found to be 39.12 ± 0.01%, 2.06 ± 0.017 µm and 0.95 ± 0.009, respectively, which matched values predicted by mathematical models. About 44.4% of the encapsulated alpha-mangostin was released over 4 weeks. Thermal analysis of the microspheres showed physical conversion of alpha-mangostin from crystallinity to amorphous with encapsulated one had lower in vitro cytotoxicity than free alpha-mangostin. Aerodynamic diameter (784.3 ± 7.5 nm) of this alpha-mangostin microsphere suggests suitability for peripheral pulmonary delivery.
Collapse
Affiliation(s)
- Aimen Abdo Elsaid Ali
- Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia , Kuantan, Pahang , Malaysia
| | | | | |
Collapse
|
16
|
Tariq M, Iqbal Z, Ali J, Baboota S, Talegaonkar S, Ahmad Z, Sahni JK. Treatment modalities and evaluation models for periodontitis. Int J Pharm Investig 2012; 2:106-22. [PMID: 23373002 PMCID: PMC3555006 DOI: 10.4103/2230-973x.104394] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Periodontitis is the most common localized dental inflammatory disease related with several pathological conditions like inflammation of gums (gingivitis), degeneration of periodontal ligament, dental cementum and alveolar bone loss. In this perspective, the various preventive and treatment modalities, including oral hygiene, gingival irrigations, mechanical instrumentation, full mouth disinfection, host modulation and antimicrobial therapy, which are used either as adjunctive treatments or as stand-alone therapies in the non-surgical management of periodontal infections, have been discussed. Intra-pocket, sustained release systems have emerged as a novel paradigm for the future research. In this article, special consideration is given to different locally delivered anti-microbial and anti inflammatory medications which are either commercially available or are currently under consideration for Food and Drug Administration (FDA) approval. The various in vitro dissolution models and microbiological strain investigated to impersonate the infected and inflamed periodontal cavity and to predict the in vivo performance of treatment modalities have also been thrashed out. Animal models that have been employed to explore the pathology at the different stages of periodontitis and to evaluate its treatment modalities are enlightened in this proposed review.
Collapse
Affiliation(s)
- Mohammad Tariq
- Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard, Hamdard Nagar, New Delhi-110062, India
| | - Zeenat Iqbal
- Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard, Hamdard Nagar, New Delhi-110062, India
| | - Javed Ali
- Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard, Hamdard Nagar, New Delhi-110062, India
| | - Sanjula Baboota
- Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard, Hamdard Nagar, New Delhi-110062, India
| | - Sushama Talegaonkar
- Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard, Hamdard Nagar, New Delhi-110062, India
| | - Zulfiqar Ahmad
- Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard, Hamdard Nagar, New Delhi-110062, India
| | - Jasjeet K Sahni
- Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard, Hamdard Nagar, New Delhi-110062, India
| |
Collapse
|
17
|
Mdala I, Haffajee AD, Socransky SS, de Blasio BF, Thoresen M, Olsen I, Goodson JM. Multilevel analysis of clinical parameters in chronic periodontitis after root planing/scaling, surgery, and systemic and local antibiotics: 2-year results. J Oral Microbiol 2012; 4:JOM-4-17535. [PMID: 22545190 PMCID: PMC3337750 DOI: 10.3402/jom.v4i0.17535] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Accepted: 04/03/2012] [Indexed: 12/16/2022] Open
Abstract
AIM Find the periodontal treatment that best maintained clinical results over time evaluated by changes in pocket depth (PD) and clinical attachment level (CAL). METHODS 229 patients with chronic periodontitis from USA (n=134) and Sweden (n=95) were randomly assigned to eight groups receiving (1) scaling+root planing (SRP) alone or combined with (2) surgery (SURG)+systemic amoxicillin (AMOX)+systemic metronidazole (MET); (3) SURG+local tetracycline (TET); (4) SURG; (5) AMOX+MET+TET; (6) AMOX+MET; (7) TET; and (8) SURG+AMOX+MET+TET. Antibiotics were given immediately after SRP. Plaque, gingival redness, bleeding on probing, suppuration, PD, and CAL were recorded at baseline and after 3, 6, 12, 18, and 24 months. Treatment effects were evaluated by linear multilevel regression and logistic multilevel regression models. We considered only data from sites with a baseline PD of at least 5 mm of 187 patients completing the study. RESULTS Surgically treated patients experienced most CAL loss. Adjunctive therapy including SURG was most effective in reducing PD. Combining SURG with AMOX, MET, and TET gave significant clinical benefits. Past and current smoking habits were significant predictors of deeper PD. Only current smoking was a significant predictor of CAL loss. Bleeding, accumulation of plaque, gingival redness, and suppuration were significant predictors of further CAL loss and deeper PD. CONCLUSIONS Both surgical and non-surgical therapies can be used to arrest chronic periodontitis. SURG+AMOX+MET+TET gave best maintenance of clinical results.
Collapse
Affiliation(s)
- Ibrahimu Mdala
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Anne D. Haffajee
- Department of Periodontology, The Forsyth Institute, Cambridge, MA, USA
| | | | | | - Magne Thoresen
- Department of Biostatistics, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Ingar Olsen
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - J. Max Goodson
- Center for Clinical and Translational Research, The Forsyth Institute, Cambridge, MA, USA
| |
Collapse
|
18
|
Patel RS, Cho DY, Tian C, Chang A, Estrellas KM, Lavin D, Furtado S, Mathiowitz E. Doxycycline delivery from PLGA microspheres prepared by a modified solvent removal method. J Microencapsul 2012; 29:344-52. [PMID: 22263669 DOI: 10.3109/02652048.2011.651499] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We report on the development of a modified solvent removal method for the encapsulation of hydrophilic drugs within poly(lactic-co-glycolic acid) (PLGA). Using a water/oil/oil double emulsion, hydrophilic doxycycline was encapsulated within PLGA spheres with particle diameters ranging from approximately 600 nm to 19 µm. Encapsulation efficiencies of up to 74% were achieved for theoretical loadings from 1% to 10% (w/w), with biphasic release over 85 days with nearly complete release at the end of this time course. About 1% salt was added to the formulations to examine its effects on doxycycline release; salt modulated release only by increasing the magnitude of initial release without altering kinetics. Fourier transform infrared spectroscopy indicated no characteristic differences between doxycycline-loaded and control spheres. Differential scanning calorimetry and X-ray diffraction suggest that there may be a molecular dispersion of the doxycycline within the spheres and the doxycycline may be in an amorphous state, which could explain the slow, prolonged release of the drug.
Collapse
Affiliation(s)
- Roshni S Patel
- Department of Molecular Pharmacology, Physiology, and Biotechnology, Center for Biomedical Engineering, Center for Biomedical Engineering, Brown University, Providence, RI 02912, USA
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Machtei EE, Hirsh I, Falah M, Shoshani E, Avramoff A, Penhasi A. Multiple applications of flurbiprofen and chlorhexidine chips in patients with chronic periodontitis: a randomized, double blind, parallel, 2-arms clinical trial. J Clin Periodontol 2011; 38:1037-43. [PMID: 22092475 PMCID: PMC3586660 DOI: 10.1111/j.1600-051x.2011.01779.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/17/2011] [Indexed: 11/29/2022]
Abstract
AIM The aim of the present randomized, double blind, parallel, 2-arm clinical study was to examine the safety and efficacy of frequent applications of chlorhexidine chip (CHX) and flurbiprofen chip (FBP) in patients with chronic periodontitis. METHODS Sixty patients were randomized into CHX and FBP groups. Following OHI and scaling and root planing (SRP), baseline pocket depth (PD) measurements, gingival recession and bleeding on probing (BOP) were performed and repeated at week 4 and 8. The assigned chip was placed at weeks 0, 1, 2, 3, 5, 7. RESULTS Mean PD reduction in the CHX group was 2.08 mm (7.17 to 5.09, p < 0.0001). Mean PD reduction in the FBP group was 2.27 mm (6.72 to 4.45, p < 0.0001). Ninety-seven percentage and 95% of these sites exhibited PD reduction ≥1 mm, while 38% and 34% of the sites exhibited PD ≥3 mm (FBP and CHX, respectively). Clinical attachment level gain (1.66 and 1.95 mm, respectively) was statistically significant (p < 0.0001). Baseline BOP dropped from 98% and 100% to 24% and 30% for the CHX and FBP groups, respectively (p < 0.0001). CONCLUSION Frequent applications of CHX and FBP chips resulted in a significant improvement in the periodontal condition in these sites. Furthermore studies will be required to compare this new treatment regimen to SRP or SRP with single chip application.
Collapse
Affiliation(s)
- Eli E Machtei
- Department of Periodontology, School of Graduate Dentistry, Rambam Health Care Campus and the Faculty of Medicine - Technion (I.I.T.), Haifa, Israel.
| | | | | | | | | | | |
Collapse
|
20
|
Enhancing immunogenicity to PLGA microparticulate systems by incorporation of alginate and RGD-modified alginate. Eur J Pharm Sci 2011; 44:32-40. [DOI: 10.1016/j.ejps.2011.05.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 04/25/2011] [Accepted: 05/29/2011] [Indexed: 12/24/2022]
|
21
|
Álvarez AL, Espinar FO, Méndez JB. The Application of Microencapsulation Techniques in the Treatment of Endodontic and Periodontal Diseases. Pharmaceutics 2011; 3:538-71. [PMID: 24310596 PMCID: PMC3857082 DOI: 10.3390/pharmaceutics3030538] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 08/09/2011] [Accepted: 08/24/2011] [Indexed: 11/12/2022] Open
Abstract
In the treatment of intracanal and periodontal infections, the local application of antibiotics and other therapeutic agents in the root canal or in periodontal pockets may be a promising approach to achieve sustained drug release, high antimicrobial activity and low systemic side effects. Microparticles made from biodegradable polymers have been reported to be an effective means of delivering antibacterial drugs in endodontic and periodontal therapy. The aim of this review article is to assess recent therapeutic strategies in which biocompatible microparticles are used for effective management of periodontal and endodontic diseases. In vitro and in vivo studies that have investigated the biocompatibility or efficacy of certain microparticle formulations and devices are presented. Future directions in the application of microencapsulation techniques in endodontic and periodontal therapies are discussed.
Collapse
Affiliation(s)
- Asteria Luzardo Álvarez
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Ciencias, Universidad de Santiago de Compostela, 27002 Lugo, Spain; E-Mail:
| | - Francisco Otero Espinar
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain; E-Mail:
| | - José Blanco Méndez
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Ciencias, Universidad de Santiago de Compostela, 27002 Lugo, Spain; E-Mail:
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain; E-Mail:
| |
Collapse
|
22
|
Incorporating chitosan (CS) and TPP into silk fibroin (SF) in fabricating spray-dried microparticles prolongs the release of a hydrophilic drug. J Taiwan Inst Chem Eng 2011. [DOI: 10.1016/j.jtice.2010.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
23
|
Chung TW, Lin SY, Liu DZ, Tyan YC, Yang JS. Sustained release of 5-FU from Poloxamer gels interpenetrated by crosslinking chitosan network. Int J Pharm 2009; 382:39-44. [DOI: 10.1016/j.ijpharm.2009.07.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Revised: 07/04/2009] [Accepted: 07/30/2009] [Indexed: 10/20/2022]
|
24
|
Fontana CR, dos Santos Junior DS, Bosco JM, Spolidorio DM, Chiérici Marcantonio RA. Evaluation of Chitosan Gel as Antibiotic and Photosensitizer Delivery. Drug Deliv 2008; 15:417-22. [DOI: 10.1080/10717540802007433] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
25
|
Abstract
Thiolated polymers have been studied by many researchers because of the mucoadhesive
properties of thiol group. Alginate is a natural and biocompatible polymer that has been widely used
in drug delivery. In this study, thiolated chitosan microspheres (TCMs) were prepared by ionic
gelation process with tripolyphosphate and then, the bovine growth hormone (BGH) was loaded as
a model drug. Finally, the BGH-loaded TCMs (BTCMs) were coated with alginate to improve the
stability in gastrointestinal (GI) track. The alginate-coated BTCMs (ABTCMs) were observed as
spherical shapes. The average particle sizes of ABTCMs were 6.97±0.55 -m and the sizedistribution
was shown uniformly. Release of BGH from ABTCMs was decreased by coating with
alginate and increased rapidly with the change in medium pH from 1.2 to 7.4. Results indicate that
the ABTCMs have a potential as a drug carrier for oral drug delivery.
Collapse
|
26
|
Mundargi RC, Srirangarajan S, Agnihotri SA, Patil SA, Ravindra S, Setty SB, Aminabhavi TM. Development and evaluation of novel biodegradable microspheres based on poly(d,l-lactide-co-glycolide) and poly(ε-caprolactone) for controlled delivery of doxycycline in the treatment of human periodontal pocket: In vitro and in vivo studies. J Control Release 2007; 119:59-68. [PMID: 17331611 DOI: 10.1016/j.jconrel.2007.01.008] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2006] [Revised: 12/15/2006] [Accepted: 01/14/2007] [Indexed: 10/23/2022]
Abstract
This study reports on the development of novel biodegradable microspheres prepared by water-in-oil-water (W/O/W) double emulsion technique using the blends of poly(d,l-lactide-co-glycolide) (PLGA) and poly(epsilon-caprolactone) (PCL) in different ratios for the controlled delivery of doxycycline (DXY). Doxycycline encapsulation of up to 24% was achieved within the polymeric microspheres. Blend placebo microspheres, drug-loaded microspheres and pristine DXY were analyzed by Fourier transform infrared spectroscopy (FT-IR), which indicated no interaction between drug and polymers. Differential scanning calorimetry (DSC) on drug-loaded microspheres confirmed the polymorphism of DXY and indicated a molecular level dispersion of DXY in the microspheres. Scanning electron microscopy (SEM) confirmed the spherical nature and smooth surfaces of the microspheres produced. Mean particle size of the microspheres as measured by dynamic laser light scattering method ranged between 90 and 200 mum. In vitro release studies performed in 7.4 pH media indicated the release of DXY from 7 to 11 days, depending upon the blend ratio of the matrix. Up to 11 days, DXY concentrations in the gingival crevicular fluid were higher than the minimum inhibitory concentration of DXY against most of the periodontal pathogens. One of the developed formulations was subjected to in vivo efficacy studies in thirty sites of human periodontal pockets. Significant results were obtained with respect to both microbiological and clinical parameters up to 3 months even as compared to commercial DXY gel. Statistical analyses of the release data and in vivo results were performed using the analysis of variance (ANOVA) method.
Collapse
|
27
|
Literature Alerts. Drug Deliv 2005. [DOI: 10.1080/10717540500201502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|