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Khaing EM, Jitrangsri K, Chomto P, Phaechamud T. Nitrocellulose for Prolonged Permeation of Levofloxacin HCl-Salicylic Acid In Situ Gel. Polymers (Basel) 2024; 16:989. [PMID: 38611247 PMCID: PMC11014302 DOI: 10.3390/polym16070989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 03/28/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
Currently, the application of solvent exchange-induced in situ gel is underway for drug delivery to the body target site. Nitrocellulose was attempted in this research as the matrix-forming agent in solvent exchange-induced in situ gel for acne and periodontitis treatments. The gel incorporated a combination of 1% w/w levofloxacin HCl and 2% w/w salicylic acid as the active compounds. In order to facilitate formulation development, the study explored the matrix-forming behavior of different concentrations of nitrocellulose in N-methyl pyrrolidone (NMP). Consequently, their physicochemical properties and matrix-forming behavior, as well as antimicrobial and anti-inflammatory activities, were evaluated using the agar cup diffusion method and thermal inhibition of protein denaturation in the egg albumin technique, respectively. All prepared formulations presented as clear solutions with Newtonian flow. Their contact angles on agarose gel were higher than on a glass slide due to matrix formation upon exposure to the aqueous phase of agarose, with an angle of less than 60° indicating good spreadability. Nitrocellulose concentrations exceeding 20% initiated stable opaque matrix formation upon contact with phosphate buffer pH 6.8. The high hardness and remaining force of the transformed gel indicated their robustness after solvent exchange. Fluorescence tracking using sodium fluorescein and Nile red confirmed the retardation of NMP and water diffusion by the nitrocellulose matrix. From the Franz cell permeation study, these drugs could permeate through neonate porcine skin and tissue of porcine buccal from the nitrocellulose in situ forming gel. Their accumulation in these tissues might enable the inhibition of the invading bacterial pathogens. The developed in situ gels effectively inhibited Staphylococcus aureus, Staphylococcus epidermidis, Propionibacterium acnes, and Porphyromonas gingivalis. Furthermore, the formulations demonstrated an anti-inflammatory effect. The low viscosity of LvSa25Nc makes it appropriate for injectable treatments targeting periodontitis, while the higher viscosity of LvSa40Nc renders it appropriate for topical applications in acne treatment. Therefore, the nitrocellulose in situ gel loaded with combined levofloxacin HCl and salicylic acid emerges as a promising dosage form for treating acne and periodontitis.
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Affiliation(s)
- Ei Mon Khaing
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (E.M.K.); (P.C.)
| | - Kritamorn Jitrangsri
- Department of Chemical Engineering and Pharmaceutical Chemistry, School of Engineering and Technology, Walailak University, Nakhon Srithammarat 80160, Thailand;
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Parichart Chomto
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (E.M.K.); (P.C.)
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Thawatchai Phaechamud
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand; (E.M.K.); (P.C.)
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
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Elgendy HA, Makky AMA, Elakkad YE, Ismail RM, Younes NF. Syringeable atorvastatin loaded eugenol enriched PEGylated cubosomes in-situ gel for the intra-pocket treatment of periodontitis: statistical optimization and clinical assessment. Drug Deliv 2023; 30:2162159. [PMID: 36604813 PMCID: PMC9833412 DOI: 10.1080/10717544.2022.2162159] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Atorvastatin calcium (ATV) is a well-known anti-hyperlipidemic drug currently being recognized for possessing an anti-inflammatory effect. Introducing it as a novel remedy for periodontitis treatment necessitates developing a syringeable modified delivery system capable of targeting inflammation within the periodontal pockets. Thus, a 33 Box-Behnken design was used to generate eugenol enriched PEGylated cubosomes. Based on the desirability function, the optimized formulation (OEEPC) was selected exhibiting a solubilization efficiency (SE%) of 97.71 ± 0.49%, particle size (PS) of 135.20 ± 1.11 nm, polydispersity index (PDI) of 0.09 ± 0.006, zeta potential (ZP) of -28.30 ± 1.84 mV and showing a sustained drug release over 12 h. It displayed a cubic structure under the transmission electron microscope, furthermore, it was stable upon storage for up to 30 days. Hence, it was loaded into an optimum syringeable in-situ gel (ISG) which displayed the desired periodontal gelation temperature (34 ± 0.70 °C) and an adequate gelation time (46 ± 2.82 sec), it also released approximately 75% of the drug within 72 h. Clinical evaluation of the ISG showed a promising percentage reduction of about 58.33% in probing depth, 90% in the bleeding index, 81.81% in the plaque index, and 70.21% in gingival levels of transforming growth factor-β1. This proved that the formulated syringeable intra-pocket delivery system of ATV is an efficient candidate for diminishing inflammation in periodontitis.
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Affiliation(s)
- Heba Amin Elgendy
- Department of Pharmaceutics, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology, Giza, Egypt
| | - Amna M. A. Makky
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Yara E. Elakkad
- Department of Pharmaceutics, College of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology, Giza, Egypt
| | - Radwa M. Ismail
- Department of Oral Medicine, Periodontology and Oral Diagnosis, Faculty of Dentistry, Misr University for Science and Technology, Giza, Egypt
| | - Nihal Farid Younes
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt,CONTACT Nihal Farid Younes Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, P.O. Box 11562, Cairo, Egypt
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3
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Ashfaq R, Sisa B, Kovács A, Berkó S, Szécsényi M, Burián K, Vályi P, Budai-Szűcs M. Factorial design of in situ gelling two-compartment systems containing chlorhexidine for the treatment of periodontitis. Eur J Pharm Sci 2023; 191:106607. [PMID: 37821010 DOI: 10.1016/j.ejps.2023.106607] [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: 05/22/2023] [Revised: 09/15/2023] [Accepted: 10/09/2023] [Indexed: 10/13/2023]
Abstract
Periodontitis is one of the most widespread bacterial infectious oral diseases that affects a significant percentage of the population worldwide. Different bacterial strains are responsible for the chronic inflammation and subgingival plaque that could be effectively treated with prolonged exposure to therapeutic levels of antibiotics and antiseptics in the periodontal pockets. Medicated in situ gels of chlorhexidine (CHX), for extended drug release and long-lasting antiseptic effect in the targeted cavities, were prepared in a two-compartment system. One compartment was loaded with sodium alginate solution while other was filled with CHX and calcium solution. The mixing of the solutions during the application resulted in gelation. Two 33 full factorial designs were applied in this study in order to optimize the gel formulation. Initially, the effects of concentration of gelling agent, crosslinker, and pH of the system on the dependent variables such as gel formation and structure characteristics were investigated. Then, the concentration of the crosslinker was optimized. Afterwards, the effect of gelling agent, loading of the drug, and pH of the gel system were correlated with the gel characteristics through another factorial design. Optimized formulations were tested for mucoadhesion, in vitro drug release, and microbiological investigation. Based on the results of the factorial design, mucoadhesiveness, antimicrobial investigation, and drug release, a 4 % alginate composition can be considered optimal. Overall, the optimized in situ periodontal gel was found to be effective with prolonged retention time and desirable outcomes.
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Affiliation(s)
- Rabia Ashfaq
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös 6, Szeged H-6720, Hungary
| | - Bianka Sisa
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös 6, Szeged H-6720, Hungary
| | - Anita Kovács
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös 6, Szeged H-6720, Hungary
| | - Szilvia Berkó
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös 6, Szeged H-6720, Hungary
| | - Mária Szécsényi
- Department of Medical Microbiology, University of Szeged, Szeged H-6720, Hungary
| | - Katalin Burián
- Department of Medical Microbiology, University of Szeged, Szeged H-6720, Hungary
| | - Péter Vályi
- Department of Oral Diagnostics, Faculty of Dentistry, Semmelweis University, Budapest H-1088, Hungary
| | - Mária Budai-Szűcs
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Eötvös 6, Szeged H-6720, Hungary.
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Xia MQ, Chen J, Liu L, Tian CL, Cheng WK, Zheng Z, Chu XQ. Transdermal administration of ibuprofen-loaded hexagonal liquid crystal gel for enhancement of drug concentration in the uterus: in vitro and in vivo evaluation. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023; 34:2021-2039. [PMID: 37089114 DOI: 10.1080/09205063.2023.2205728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 04/08/2023] [Indexed: 04/25/2023]
Abstract
Primary dysmenorrhea is a common disease in women, and oral administration of Ibuprofen (IBU) is associated with first-pass effects and gastrointestinal irritation. Here, we developed ibuprofen-loaded hexagonal liquid crystal (IBU HLC) gel for transdermal administration. In this study, the structure of prepared IBU HLC was characterized using polarizing microscopey (PLM) and small angle X ray diffraction (SAXS). In vitro drug release behavior and percutaneous penetration were investigated, and drug transdermal behavior was observed by confocal laser scanning microscope (CLSM). Finally, the pharmacokinetic profile and tissue distribution were investigated after transdermal administration. The PLM and SAXS results showed that the inner structure of IBU HLC was hexagonal phase. Moreover, in vitro release, skin permeation and CLSM demonstrated that IBU HLC had an excellent sustained-release effect, and a good transdermal penetration effect accompanied by the combination of multiple percutaneous routes. Pharmacokinetic studies indicated that IBU entered the blood circulation through abdominal transdermal administration in small amounts, mainly entering the uterus, and had a certain targeting ability. In conclusion, the IBU HLC gel would be a promising sustained-release preparation for transdermal administration to relieve dysmenorrhea with a significant drug concentration in the uterus.
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Affiliation(s)
- Meng-Qiu Xia
- School of Pharmacy, Wuhu Institute of Technology, Wuhu, Anhui, China
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, China
- Life and Health Engineering Research Center of Wuhu, Wuhu Institute of Technology, Wuhu, Anhui, China
| | - Jingbao Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Liu Liu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, China
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Chun-Ling Tian
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Wang-Kai Cheng
- School of Pharmacy, Wuhu Institute of Technology, Wuhu, Anhui, China
- Life and Health Engineering Research Center of Wuhu, Wuhu Institute of Technology, Wuhu, Anhui, China
| | - Zhiyun Zheng
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Xiao-Qin Chu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui, China
- Engineering Technology Research Center of Modern Pharmaceutical Preparation, Hefei, Anhui, PR China
- Anhui Province Key Laboratory of Pharmaceutical Preparation Technology and Application, Hefei, Anhui, PR China
- Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei, Anhui, PR China
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Senarat S, Tuntarawongsa S, Lertsuphotvanit N, Rojviriya C, Phaechamud T, Chantadee T. Levofloxacin HCl-Loaded Eudragit L-Based Solvent Exchange-Induced In Situ Forming Gel Using Monopropylene Glycol as a Solvent for Periodontitis Treatment. Gels 2023; 9:583. [PMID: 37504462 PMCID: PMC10379822 DOI: 10.3390/gels9070583] [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: 06/20/2023] [Revised: 07/11/2023] [Accepted: 07/13/2023] [Indexed: 07/29/2023] Open
Abstract
Solvent exchange-induced in situ forming gel (ISG) is currently an appealing dosage form for periodontitis treatment via localized injection into the periodontal pocket. This study aims to apply Eudragit L and Eudragit S as matrix components of ISG by using monopropylene glycol as a solvent for loading levofloxacin HCl for periodontitis treatment. The influence of Eudragit concentration was investigated in terms of apparent viscosity, rheological behavior, injectability, gel-forming behavior, and mechanical properties. Eudragit L-based formulation presented less viscosity, was easier to inject, and could form more gel than Eudragit S-based ISG. Levofloxacin HCl-loading diminished the viscosity of Eudragit L-based formulation but did not significantly change the gel formation ability. Higher polymer loading increased viscosity, force-work of injectability, and hardness. SEM photographs and µCT images revealed their scaffold formation, which had a denser topographic structure and less porosity attained owing to higher polymer loading and less in vitro degradation. By tracking with fluorescence dyes, the interface interaction study revealed crucial information such as solvent movement ability and matrix formation of ISG. They prolonged the drug release for 14 days with fickian drug diffusion kinetics and increased the release amount above the MIC against test microbes. The 1% levofloxacin HCl and 15% Eudragit L dissolved in monopropylene glycol (LLM15) was a promising ISG because of its appropriate viscosity (3674.54 ± 188.03 cP) with Newtonian flow, acceptable gel formation and injectability (21.08 ± 1.38 N), hardness (33.81 ± 2.3 N) and prolonged drug release with efficient antimicrobial activities against S. aureus (ATCC 6538, 6532, and 25923), methicillin-resistant S. aureus (MRSA) (S. aureus ATCC 4430), E. coli ATCC 8739, C. albicans ATCC 10231, P. gingivalis ATCC 33277, and A. actinomycetemcomitans ATCC 29522; thus, it is the potential ISG formulation for periodontitis treatment by localized periodontal pocket injection.
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Affiliation(s)
- Setthapong Senarat
- Programme of Pharmaceutical Engineering, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Sarun Tuntarawongsa
- Pharmaceutical Intellectual Center "Prachote Plengwittaya", Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Nutdanai Lertsuphotvanit
- Program of Pharmaceutical Technology, Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Catleya Rojviriya
- Synchrotron Light Research Institute, Mueang District, Nakhon Ratchasima 30000, Thailand
| | - Thawatchai Phaechamud
- Programme of Pharmaceutical Engineering, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Program of Pharmaceutical Technology, Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Takron Chantadee
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
- Center of Excellent in Pharmaceutical Nanotechnology, Chiang Mai University, Chiang Mai 50200, Thailand
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Puyathorn N, Lertsuphotvanit N, Chantadee T, Pichayakorn W, Phaechamud T. Lincomycin HCl-Loaded Borneol-Based In Situ Gel for Periodontitis Treatment. Gels 2023; 9:495. [PMID: 37367165 DOI: 10.3390/gels9060495] [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: 05/18/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023] Open
Abstract
Solvent exchange-induced in situ forming gel (ISG) has emerged as a versatile drug delivery system, particularly for periodontal pocket applications. In this study, we developed lincomycin HCl-loaded ISGs using a 40% borneol-based matrix and N-methyl pyrrolidone (NMP) as a solvent. The physicochemical properties and antimicrobial activities of the ISGs were evaluated. The prepared ISGs exhibited low viscosity and reduced surface tension, allowing for easy injection and spreadability. Gel formation increased the contact angle on agarose gel, while higher lincomycin HCl content decreased water tolerance and facilitated phase separation. The drug-loading influenced solvent exchange and matrix formation, resulting in thinner and inhomogeneous borneol matrices with slower gel formation and lower gel hardness. The lincomycin HCl-loaded borneol-based ISGs demonstrated sustained drug release above the minimum inhibitory concentration (MIC) for 8 days, following Fickian diffusion and fitting well with Higuchi's equation. These formulations exhibited dose-dependent inhibition of Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 8739, and Prophyromonas gingivalis ATCC 33277, and the release of NMP effectively inhibited Candida albicans ATCC 10231. Overall, the 7.5% lincomycin HCl-loaded 40% borneol-based ISGs hold promise as localized drug delivery systems for periodontitis treatment.
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Affiliation(s)
- Napaphol Puyathorn
- Programme of Pharmaceutical Engineering, Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Nutdanai Lertsuphotvanit
- Program of Pharmaceutical Technology, Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Takron Chantadee
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Wiwat Pichayakorn
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90110, Thailand
| | - Thawatchai Phaechamud
- Programme of Pharmaceutical Engineering, Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Program of Pharmaceutical Technology, Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
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Puyathorn N, Senarat S, Lertsuphotvanit N, Phaechamud T. Physicochemical and Bioactivity Characteristics of Doxycycline Hyclate-Loaded Solvent Removal-Induced Ibuprofen-Based In Situ Forming Gel. Gels 2023; 9:gels9020128. [PMID: 36826298 PMCID: PMC9956372 DOI: 10.3390/gels9020128] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 01/29/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Modulation with the suppression of infection and inflammation is essential to the successful treatment of periodontitis. An aqueous insoluble hydrophobic anti-inflammatory compound, i.e., ibuprofen (IBU), was investigated in this study as the matrix-forming agent of a doxycycline hyclate (DH)-loaded solvent removal-induced in situ forming gel (ISG) using dimethyl sulfoxide (DMSO) and N-methyl pyrrolidone (NMP) as the solvents. Their physicochemical properties, including pH, density, viscosity, surface tension, contact angle, water tolerance, injectability, mechanical properties, gel formation, and drug release, were determined. Their antimicrobial activities were tested using agar cup diffusion, and their anti-inflammatory activity was assessed using thermal inhibition of protein denaturation of egg albumin. Increasing the IBU content decreased the density, pH, surface tension, and contact angle but increased the viscosity, force and work of injection, and gel formation of IBU-based ISG solution. Although their water tolerance values decreased with the increase in IBU content, the addition of DH and the use of NMP led to high water tolerance. The characterization of the dried gel remnants of ISGs presented no change in IBU crystallinity and thermal properties and confirmed no chemical interaction among the components of ISGs. The obtained transformed IBU matrix prolonged the release of DH and IBU from ISGs over 7 days from its tortuously packed IBU matrix with small pores, and conformed well with Fickian diffusion mechanism. The developed DH-loaded solvent removal-induced IBU-based ISGs exhibited efficient antimicrobial activities against Staphylococcus aureus, methicillin-resistant S. aureus, Escherichia coli, Candida albicans, Porphyromonas gingivalis, and Aggregatibacter actinomycetemcomitans. IBU in formulation promoted the antimicrobial activity of ISGs, whereas DH and NMP promoted the anti-inflammatory activity of ISGs. Consequently, the DH-loaded solvent removal-induced IBU-based ISGs proposed in this study show great potential as an effective bioactive drug delivery system for periodontitis treatment by localized periodontal pocket injection.
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Affiliation(s)
- Napaphol Puyathorn
- Programme of Pharmaceutical Engineering, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Setthapong Senarat
- Programme of Pharmaceutical Engineering, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Nutdanai Lertsuphotvanit
- Program of Pharmaceutical Technology, Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Thawatchai Phaechamud
- Programme of Pharmaceutical Engineering, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Correspondence: ; Tel.: +66-034-255800
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Reise M, Kranz S, Guellmar A, Wyrwa R, Rosenbaum T, Weisser J, Jurke A, Schnabelrauch M, Heyder M, Watts DC, Sigusch BW. Coaxial electrospun nanofibers as drug delivery system for local treatment of periodontitis. Dent Mater 2023; 39:132-139. [PMID: 36604256 DOI: 10.1016/j.dental.2022.12.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/15/2022] [Accepted: 12/24/2022] [Indexed: 01/05/2023]
Abstract
OBJECTIVES The aim of the present study was to prepare resorbable polylactide fibers for periodontitis treatment using coaxial electrospinning to optimize the release of metronidazole (MNA) by reducing the initial burst effect. METHODS Poly(L-lactide-co-D,L-lactide) (PLA) fibers mats with different distributions of metronidazole (MNA) were manufactured by coaxial electrospinning (COAX). By COAX spinning the central core of the fiber was enriched with 40% MNA (m/m), while the sheath of the fiber consisted of PLA only (test group). In contrast, fibers of the control group were prepared by conventional electrospinning with the same amount of MNA but with a homogenous drug distribution (HDD - homogenously distributed drug). The release of MNA was determined by analyzing aliquots from the fiber mats using UV-VIS spectroscopy. Agar diffusion tests were carried out to determine the antibacterial effect on periodontopathogenic bacteria. Biocompatibility was tested in direct contact to human gingival fibroblasts (HGF) for two days. RESULTS The COAX mats showed a retarded drug release compared to the conventional HDD fibers. After 24 h, 64% of total MNA was released cumulatively from the COAX fibers while 90% of the MNA was released from the HDD fibers (controls). The antibacterial effect of COAX fibers was significantly higher after 24 h compared to the HDD fibers. Cell cultivation revealed significant higher numbers of vital cells among the COAX mats. SIGNIFICANCE COAX fibers showed improved sustained MNA release compared to conventional fibers and can be seen as potential drug delivery systems in local periodontitis treatment.
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Affiliation(s)
- Markus Reise
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der alten Post 4, 07743 Jena, Germany
| | - Stefan Kranz
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der alten Post 4, 07743 Jena, Germany.
| | - André Guellmar
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der alten Post 4, 07743 Jena, Germany
| | - Ralf Wyrwa
- Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Michael-Faraday-Str. 1, 07629 Hermsdorf, Germany
| | - Tobias Rosenbaum
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der alten Post 4, 07743 Jena, Germany
| | - Jürgen Weisser
- Department of Biomaterials, INNOVENT e.V., Prüssingstr. 27b, 07745 Jena, Germany
| | - Aileen Jurke
- Department of Biomaterials, INNOVENT e.V., Prüssingstr. 27b, 07745 Jena, Germany
| | | | - Markus Heyder
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der alten Post 4, 07743 Jena, Germany
| | - David C Watts
- University of Manchester, School of Medical Sciences, Oxford Road, M13 9PL Manchester, UK
| | - Bernd W Sigusch
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der alten Post 4, 07743 Jena, Germany
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9
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Wilkinson J, Ajulo D, Tamburrini V, Gall GL, Kimpe K, Holm R, Belton P, Qi S. Lipid based intramuscular long-acting injectables: current state of the art. Eur J Pharm Sci 2022; 178:106253. [DOI: 10.1016/j.ejps.2022.106253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/27/2022] [Accepted: 07/02/2022] [Indexed: 11/03/2022]
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Mertz N, Bock F, Østergaard J, Yaghmur A, Weng Larsen S. Investigation of diclofenac release and dynamic structural behavior of non-lamellar liquid crystal formulations during in situ formation by UV-Vis imaging and SAXS. Int J Pharm 2022; 623:121880. [PMID: 35661744 DOI: 10.1016/j.ijpharm.2022.121880] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 10/18/2022]
Abstract
In situ formation of high viscous inverse lyotropic non-lamellar liquid crystalline phases is a promising approach for sustained drug delivery in the joint. The in situ forming process on exposure of two diclofenac-loaded preformulations to aqueous media was characterized with respect to depot size and shape, initial release and structural transitions using UV-Vis imaging and spatially and time-resolved synchrotron small-angle X-ray scattering (SAXS). The preformulations consisted of 10 % (w/w) ethanol, 10 % (w/w) water and a binary lipid mixture of glycerol monooleate (GMO):1,2-dioleoyl-sn-glycero-3-phospho-rac-(1-glycerol) (DOPG) or GMO:medium chain triglycerides (MCT). Upon injection of preformulations into an employed injection-cell containing excess of bio-relevant medium, rapid generation of liquid crystalline depots was observed. UV-Vis images and constructed 2D SAXS maps of the injection-cell showed depots with different shapes and sizes, and features with high nanostructural heterogeneity. More extensive swelling of the GMO:DOPG-based preformulation was observed compared to the GMO:MCT-based preformulation. The UV image analysis found that a higher amount of diclofenac was released in the image area after 20 h from the GMO:MCT-depot compared to the GMO:DOPG-depot. The injection-cell setup employing UV-Vis imaging and synchrotron SAXS constitutes an attractive approach for evaluating the in situ forming processes of liquid crystalline depots.
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Affiliation(s)
- Nina Mertz
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Frederik Bock
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Jesper Østergaard
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Anan Yaghmur
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Susan Weng Larsen
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
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11
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Yue X, Zhang X, Wang C, Huang Y, Hu P, Wang G, Cui Y, Xia X, Zhou Z, Pan X, Wu C. A bacteria-resistant and self-healing spray dressing based on lyotropic liquid crystals to treat infected post-operative wounds. J Mater Chem B 2021; 9:8121-8137. [PMID: 34494632 DOI: 10.1039/d1tb01201k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The delayed healing of infected post-operative wounds has turned into a worldwide medical problem. In the clinical treatment, effective bacterial clearance and promoted wound healing were considered as two crucial aspects. However, the effect of current dressings with antibacterial activity was limited due to the declined efficacy against antibiotic-resistant bacteria, and poor mechanical property during skin extension and compression movement. In this project, a lyotropic liquid crystal (LLC)-based bacteria-resistant and self-healing spray dressing loaded with ε-polylysine (PLL) was designed. Owing to the unique antibacterial mechanism, PLL was expected to kill antibiotic-resistant bacteria efficiently, even the "superbug" methicillin-resistant Staphylococcus aureus (MRSA). The cubic cells of LLC were applied to encapsulate PLL to improve its stability and induce a sustained release, further realizing a long-term antibacterial effect. Meanwhile, the LLC precursor (LLCP) could extend to the irregular edges of the wound, and spontaneously transited to a cubic phase gel once exposed to physiological fluid. This 3D structure was also endowed with mechanically responsive viscoelasticity that formed a robust and flexible defense for wounds. An excellent antibacterial activity with more than 99% MRSA killed in 3 h was demonstrated by a killing kinetics study. The long-term effect was also proved by measuring the bacteriostatic circle test within 48 h. In addition, the unique sol-gel phase transition behavior and superior self-healing capacity of PLL-LLCP was verified with the rheological study and self-recoverable conformal deformation test in vivo. In the infected post-operative wound model, satisfactory bacterial clearance and prominent wound healing promotion were realized by PLL-LLCP, with the survival of the bacteria at lower than 0.1% and the wound closure at higher than 90%. Thus, PLL-LLCP was believed to be an excellent candidate for the therapy of infected post-operative wounds.
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Affiliation(s)
- Xiao Yue
- College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, P. R. China. .,School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, P. R. China.
| | - Xuejuan Zhang
- College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, P. R. China.
| | - Chen Wang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, P. R. China.
| | - Ying Huang
- College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, P. R. China.
| | - Ping Hu
- College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, P. R. China.
| | - Guanlin Wang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, P. R. China.
| | - Yingtong Cui
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, P. R. China.
| | - Xiao Xia
- College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, P. R. China.
| | - Ziqiang Zhou
- College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, P. R. China.
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, P. R. China.
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, P. R. China.
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12
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Dubar M, Lizambard M, Delcourt-Debruyne E, Batool F, Huck O, Siepmann F, Agossa K. In-situforming drug-delivery systems for periodontal treatment: current knowledge and perspectives. Biomed Mater 2021; 16. [PMID: 34500442 DOI: 10.1088/1748-605x/ac254c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 09/09/2021] [Indexed: 02/07/2023]
Abstract
Several chemical compounds are considered to be promising as adjuvants in the treatment of periodontitis. Antimicrobials, anti-inflammatory drugs or, more recently, pro-regenerative or antioxidant molecules have shown a very interesting potential to improve the outcomes of mechanical biofilm removal and promote the healing of the damaged tissues. However, their clinical effect is often limited by the challenge of achieving effective and prolonged drug delivery within the periodontal lesion, while limiting the risk of toxicity.In-situforming implants (ISFI) are 'implantable' drug-delivery systems that have gained considerable attention over the last few decades due to their multiple biomedical applications. They are liquids that, when injected at the site to be treated, form a semi-solid or solid dosage form that provides safe and locally controlled drug release. This review discusses current data and future prospects for the use of ISFI in periodontal treatment.
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Affiliation(s)
- Marie Dubar
- University Lille, Inserm, CHU Lille, U1008-Advanced Drug Delivery Systems, F-59000 Lille, France
| | - Martin Lizambard
- University Lille, Inserm, CHU Lille, U1008-Advanced Drug Delivery Systems, F-59000 Lille, France
| | | | - Fareeha Batool
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France.,Université de Strasbourg, Faculté de Chirurgie-dentaire, 8 rue Sainte-Elisabeth, 67000 Strasbourg, France
| | - Olivier Huck
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France.,Université de Strasbourg, Faculté de Chirurgie-dentaire, 8 rue Sainte-Elisabeth, 67000 Strasbourg, France
| | - Florence Siepmann
- University Lille, Inserm, CHU Lille, U1008-Advanced Drug Delivery Systems, F-59000 Lille, France
| | - Kevimy Agossa
- University Lille, Inserm, CHU Lille, U1008-Advanced Drug Delivery Systems, F-59000 Lille, France
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Ranch KM, Maulvi FA, Koli AR, Desai DT, Parikh RK, Shah DO. Tailored Doxycycline Hyclate Loaded In Situ Gel for the Treatment of Periodontitis: Optimization, In Vitro Characterization, and Antimicrobial Studies. AAPS PharmSciTech 2021; 22:77. [PMID: 33595740 DOI: 10.1208/s12249-021-01950-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 02/03/2021] [Indexed: 12/27/2022] Open
Abstract
Currently, periodontitis is treated by oral dosage forms (antibiotics) which shows systemic side effects and failed to reach the therapeutic concentration (above minimum inhibitory concentration, MIC) in the periodontal pocket. The present study aimed to overcome the above issues, by designing tailored doxycycline hyclate laden in situ gel by Poloxamer 407, chitosan, and polyethylene glycol 600. The in situ gel-forming system has attracted attention owing to its ability of sustained drug release above MIC, easy administration (syringeability), and high drug retention (localization) in the periodontal cavity. The Box-Behnken design (BBD) was used to tailor and optimize the concentration of Poloxamer 407 (X1 = 14.3%), chitosan (X2 = 0.58%), and polyethylene glycol 600 (X3 = 1.14%) to achieve sufficient syringeability (149 N), t90% (1105 min), and viscosity at non-physiological condition (512 cps) and physiological condition (5415 cps). The optimized in situ gel was clear and isotonic (RBCs test). The gelation temperature of the optimized in situ was 34 ± 1°C with sufficient mucoadhesive strength (26 ± 2 dyn/cm2), gel strength (29 ± 2 sec), and texture profile for periodontal application. The in vitro drug release studies showed sustain release from optimized in situ gel (24h) in comparison to marketed gel (7h). The antimicrobial activity (cup plate technique) of the in situ gel was equivalent to the marketed doxycycline gel, which suggests that the doxycycline hyclate retained its antimicrobial efficacy when formulated as in situ gelling system. In conclusion, BBD was effectively utilized to optimize in situ gel with minimum level of polymers to achieve the required characteristics of the in situ gel for sustaining drug delivery to treat periodontitis.
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Zhang X, Xiao Y, Huang Z, Chen J, Cui Y, Niu B, Huang Y, Pan X, Wu C. Smart phase transformation system based on lyotropic liquid crystalline@hard capsules for sustained release of hydrophilic and hydrophobic drugs. Drug Deliv 2020; 27:449-459. [PMID: 32157918 PMCID: PMC7144316 DOI: 10.1080/10717544.2020.1736210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/18/2020] [Accepted: 02/25/2020] [Indexed: 12/21/2022] Open
Abstract
Smart phase transformation systems@hard capsule (SPTS@hard capsule) based on lyotropic liquid crystalline (LLC) were developed for oral sustained release in this study. Doxycycline hydrochloride (DOXY) and meloxicam (MLX) were used as hydrophilic and hydrophobic model drug, respectively. Two systems were added with different additives, that is, gelucire 39/01, PEG 1000 and Tween 80 to adjust their melting point and release profiles. The phase transformation of these systems could be triggered by water as well as temperature. They could spontaneously transform into cubic phase or hexagonal phase when coming across with water, to achieve the 24 h sustained release profile. In addition, the obtained systems could switch between semisolid state and liquid state when temperature changed within room temperature and body temperature, which facilitated the phase transformation in gastrointestinal tract and during their encapsulation into hard capsules. LLC-based SPTS@hard capsule revealed potential for the industrialization of its oral administration on account of its drugs accommodation with different solubility, controllable release profile and simple preparation process.
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Affiliation(s)
- Xuejuan Zhang
- School of Pharmaceutical Science, Jinan University, Guangzhou, PR China
- School of Pharmaceutical Science, Sun Yat-Sen University, Guangzhou, PR China
- Institute for Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, PR China
| | - Yujun Xiao
- Zhuhai Food and Drug (Medical Equipment) Administration Center for Evaluation and Certification, Zhuhai, PR China
| | - Zhengwei Huang
- School of Pharmaceutical Science, Sun Yat-Sen University, Guangzhou, PR China
| | - Jintian Chen
- School of Pharmaceutical Science, Sun Yat-Sen University, Guangzhou, PR China
| | - Yingtong Cui
- School of Pharmaceutical Science, Sun Yat-Sen University, Guangzhou, PR China
| | - Boyi Niu
- School of Pharmaceutical Science, Sun Yat-Sen University, Guangzhou, PR China
| | - Ying Huang
- School of Pharmaceutical Science, Jinan University, Guangzhou, PR China
- School of Pharmaceutical Science, Sun Yat-Sen University, Guangzhou, PR China
| | - Xin Pan
- School of Pharmaceutical Science, Sun Yat-Sen University, Guangzhou, PR China
| | - Chuanbin Wu
- School of Pharmaceutical Science, Jinan University, Guangzhou, PR China
- School of Pharmaceutical Science, Sun Yat-Sen University, Guangzhou, PR China
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16
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Yadav R, Kanwar IL, Haider T, Pandey V, Gour V, Soni V. In situ gel drug delivery system for periodontitis: an insight review. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2020. [DOI: 10.1186/s43094-020-00053-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Abstract
Background
Periodontitis is a microbial disease that leads to inflammation in the tooth-supporting tissues of the oral cavity that is common among the elderly. It is initiated by oral inflammation induced by bacterial dysbiosis. Choosing an appropriate antimicrobial agent with the right course of drug administration is the key to successful periodontal therapy. In recent times, with more biomarkers and the development of new technologies, several point-of-care testing (POCT) platforms have been developed for the diagnosis and monitoring of periodontitis. This review focuses on oral microbiology and the pathogenesis of periodontitis as well as recent insights into the in situ gel system for periodontitis.
Design
An exhaustive search was conducted in the following scientific databases Science Direct, Springer, Pub Med, and Google Scholar to review all relevant literatures. This is a comprehensive narrative review of the literature, summarizing the perspectives of the authors.
Results
Novel in situ forming gel is introduced at the site that shows a promising potential to overcome one of the main practical obstacles associated with the treatment of local periodontitis: partial adhesion to the surrounding tissue, causing in the accidental expulsion of at least parts of the implants from patient’s pockets. This results in a large residence time of the system at the site of action and uncertainty of the final exposure to the drug.
Conclusion
From the reviewed literature, it is concluded that experimental evidence suggests that the in situ gel-forming systems can be useful in treating several common diseases of the oral cavity. Future research should focus on clinical studies to be performed for the in situ gel to make a significant contribution to periodontitis.
Graphical abstract
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17
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In situ monitoring of the formation of lipidic non-lamellar liquid crystalline depot formulations in synovial fluid. J Colloid Interface Sci 2020; 582:773-781. [PMID: 32916575 DOI: 10.1016/j.jcis.2020.08.084] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/18/2020] [Accepted: 08/24/2020] [Indexed: 12/16/2022]
Abstract
Administration of parenteral liquid crystalline phases, forming in-vivo with tunable nanostructural features and sustained release properties, offers an attractive approach for treatment of infections and local drug delivery. It has also a potential use for postoperative pain management after arthroscopic knee surgery. However, the optimal use of this drug delivery principle requires an improved understanding of the involved dynamic structural transitions after administration of low-viscous stimulus-responsive lipid precursors and their fate after direct contact with the biological environment. These precursors (preformulations) are typically based on a single biologically relevant lipid (or a lipid combination) with non-lamellar liquid crystalline phase forming propensity. In relation to liquid crystalline depot design for intra-articular drug delivery, it was our interest in the present study to shed light on such dynamic structural transitions by combining synchrotron SAXS with a remote controlled addition of synovial fluid (or buffer containing 2% (w/v) albumin). This combination allowed for monitoring in real-time the hydration-triggered dynamic structural events on exposure of the lipid precursor (organic stock solution consisting of the binary lipid mixture of monoolein and castor oil) to excess synovial fluid (or excess buffer). The synchrotron SAXS findings indicate a fast generation of inverse bicontinuous cubic phases within few seconds. The effects of (i) the organic solvent N-methyl-2-pyrolidone (NMP), (ii) the lipid composition, and (iii) the albumin content on modulating the structures of the self-assembled lipid aggregates and the implications of the experimental findings in the design of liquid crystalline depots for intra-articular drug delivery are discussed.
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18
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Kazi MS, Dehghan MH. Mapping the Impact of a Polar Aprotic Solvent on the Microstructure and Dynamic Phase Transition in Glycerol Monooleate/Oleic Acid Systems. Turk J Pharm Sci 2020; 17:307-318. [PMID: 32636709 DOI: 10.4274/tjps.galenos.2019.26096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/03/2019] [Indexed: 12/01/2022]
Abstract
OBJECTIVES The impact of incorporating a polar aprotic solvent, dimethyl sulfoxide (DMSO), in glycerol monooleate/oleic acid systems was evaluated briefly to map its influence on the gel microstructure and dynamic phase transition in controlling the performance of a polyene antifungal drug delivery system. MATERIALS AND METHODS An in situ gelling fluid precursor system (IGFPS) exhibiting inverse lyotropic liquid crystalline phases was developed by simple solution add-mixture method. Polarized light microscopy, small angle X-ray scattering (SAXS), differential scanning calorimetry (DSC), and oscillatory rheological assessments were performed to ascertain microstructural modulations. The developed system was examined for minimum gelling volume, gelling time, swelling behavior, mucoadhesion, in vitro antifungal activity, and in vitro drug release. RESULTS The SAXS study identifies the coexistence of Im3m cubic phase with HCP P63/mmc hexagonal structures. The SAXS and DSC data highlight DMSO's unique ability to work both as a kosmotropic or chaotropic solvent and to be a function of its concentration. The in vitro antifungal test results indicate the concentration of DMSO to be a controlling factor in drug release and diffusion. The in vitro drug release kinetic studies reveal that most of the gel samples follow the matrix model and anomalous type release as implied by Peppas model. CONCLUSION Finally, the antifungal IGFPS formulated was found to have the required low viscosity, responsive sol-gel phase transition, appreciative mechanical properties, and desirable antifungal effect with sustained drug release performance.
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Affiliation(s)
- Marzuka Shoeb Kazi
- Y.B. Chavan College of Pharmacy, Department of Pharmaceutics, Dr. Rafiq Zakaria Campus, Aurangabad, India
| | - Mohammed Hassan Dehghan
- Y.B. Chavan College of Pharmacy, Department of Pharmaceutics, Dr. Rafiq Zakaria Campus, Aurangabad, India
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Soe HMSH, Luckanagul JA, Pavasant P, Jansook P. Development of in situ gel containing asiaticoside/cyclodextrin complexes. Evaluation in culture human periodontal ligament cells (HPLDCs). Int J Pharm 2020; 586:119589. [PMID: 32634457 DOI: 10.1016/j.ijpharm.2020.119589] [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: 04/07/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 11/17/2022]
Abstract
Asiaticoside (AS), an active herbal compound isolated from Centella asiatica, has the potential benefit in promoting type I collagen (COL I) synthesis and osteogenic differentiation in human periodontal ligament cells (HPDLCs). However, it has low aqueous solubility which may hamper the bioavailability. Thus, the aim of this study was to develop thermoresponsive in situ gel containing AS/cyclodextrin (CD) complexes. The non-encapsulated formulations consisted of AS/hydroxypropyl β-CD (HPβCD) complexes and encapsulated formulations containing AS loaded sulfobutylether β-CD/chitosan nanoparticles (SBEβCD/CS NPs) were prepared. The appearance, pH and viscosity of all formulations were within the acceptable range. All formulations formed relatively rapid sol-to-gel transition when contacted with simulated salivary fluid at body temperature. Compared to non-encapsulated formulations, in vitro gelation and rheological studies of encapsulated formulations displayed gel formation that remained longer with high mechanical strength. In vitro mucoadhesion and in vitro release studies revealed that nanoencapsulated in situ gel had excellent mucoadhesive property and could release AS in a sustained manner. These formulations exhibited no cytotoxic effects to HPDCLs. The SBEβCD/CS NPs containing low AS content could express the COL I synthesis. Thus, nanoencapsulated platform could serve as a promising carrier to deliver AS for periodontal tissue regeneration.
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Affiliation(s)
- Hay Man Saung Hnin Soe
- Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phyathai rd., Pathumwan, Bangkok 10330, Thailand
| | - Jittima Amie Luckanagul
- Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phyathai rd., Pathumwan, Bangkok 10330, Thailand
| | - Prasit Pavasant
- Faculty of Dentistry, Chulalongkorn University, 34 Henri-Dunant Rd., Pathumwan, Bangkok 10330, Thailand
| | - Phatsawee Jansook
- Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phyathai rd., Pathumwan, Bangkok 10330, Thailand.
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20
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Wang X, Wang H, Zhang T, Cai L, Kong C, He J. Current Knowledge Regarding the Interaction Between Oral Bone Metabolic Disorders and Diabetes Mellitus. Front Endocrinol (Lausanne) 2020; 11:536. [PMID: 32903738 PMCID: PMC7438828 DOI: 10.3389/fendo.2020.00536] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 07/01/2020] [Indexed: 12/16/2022] Open
Abstract
Diabetes mellitus, a major chronic disease affecting human health, has been increasing in prevalence in recent years. Diabetes mellitus can cause bone metabolic disorders in patients, leading to osteoporosis, a higher risk of traumatic fracture, and other bone diseases. Bone metabolic disorders in the oral cavity principally manifest as periodontitis, loss of alveolar bone, and failure of implant osseointegration. In recent years, numerous studies have shown that there is a complex interaction between bone metabolic disorders and diabetes mellitus. This paper reviews the adverse effects of diabetes on oral bone metabolism disorders such as alveolar osteoporosis and bone loss in patients with periodontitis, discusses the potential mechanisms of diabetic bone loss, and suggests potential ways to prevent and treat oral bone loss in patients with diabetes mellitus.
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Affiliation(s)
- Xiaofeng Wang
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, China
- Department of Pediatrics, Pediatric Research Institute, The University of Louisville School of Medicine, Louisville, KY, United States
| | - Huiyu Wang
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Tianfu Zhang
- Department of Stomatology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Lu Cai
- Department of Pediatrics, Pediatric Research Institute, The University of Louisville School of Medicine, Louisville, KY, United States
- Departments of Radiation Oncology, Pharmacology, and Toxicology, University of Louisville, Louisville, KY, United States
| | - Chenfei Kong
- Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, China
- *Correspondence: Chenfei Kong
| | - Jinting He
- Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, China
- Jinting He
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Xingqi W, Yong Z, Xing L, Yang W, Jie H, Rongfeng H, Shuangying G, Xiaoqin C. Cubic and hexagonal liquid crystal gels for ocular delivery with enhanced effect of pilocarpine nitrate on anti-glaucoma treatment. Drug Deliv 2019; 26:952-964. [PMID: 31544551 PMCID: PMC6764361 DOI: 10.1080/10717544.2019.1667451] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The objective of this work was to investigate phytantriol-based liquid crystal (LC) gels including cubic (Q2) and hexagonal (H2) phase for ocular delivery of pilocarpine nitrate (PN) to treat glaucoma. The gels were produced by a vortex method and confirmed by crossed polarized light microscopy, small-angle X-ray scattering, and rheological measurements. Moreover, the release behaviors and permeation results of PN from the gels were estimated using in vitro studies. Finally, the anti-glaucoma effect of LC gels was evaluated by in vivo animal experiments. The inner structure of the gels was Pn3m-type Q2 and H2 phase, and both of them showed pseudoplastic fluid properties based on characterization techniques. In vitro release profiles suggested that PN could be sustainably released from LC gels within 48 h. Compared with eye drops, Q2 and H2 gel produces a 5.25-fold and 6.23-fold increase in the Papp value (p < .05), respectively, leading to a significant enhancement of corneal penetration. Furthermore, a good biocompatibility and longer residence time on precorneal for LC gels confirmed by in vivo animal experiment. Pharmacokinetic studies showed that LC gels could maintain PN concentration in aqueous humor for at least 12 h after administration and remarkably improve the bioavailability of drug. Additionally, in vivo pharmacodynamics studies indicated that LC gels had a more significant intraocular pressure-lowering and miotic effect compared to eye drops. These research findings hinted that LC gels would be a promising pharmaceutical strategy for ocular application to enhance the efficacy of anti-glaucoma.
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Affiliation(s)
- Wang Xingqi
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine , Hefei , People's Republic of China
| | - Zhang Yong
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine , Hefei , People's Republic of China
| | - Li Xing
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine , Hefei , People's Republic of China
| | - Wang Yang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine , Hefei , People's Republic of China
| | - Huang Jie
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine , Hefei , People's Republic of China
| | - Hu Rongfeng
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine , Hefei , People's Republic of China.,Institute of Pharmaceutics, Anhui Academy of Chinese Medicine , Hefei , People's Republic of China
| | - Gui Shuangying
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine , Hefei , People's Republic of China.,Institute of Pharmaceutics, Anhui Academy of Chinese Medicine , Hefei , People's Republic of China
| | - Chu Xiaoqin
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine , Hefei , People's Republic of China.,Institute of Pharmaceutics, Anhui Academy of Chinese Medicine , Hefei , People's Republic of China
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22
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Li N, Jiang L, Jin H, Wu Y, Liu Y, Huang W, Wei L, Zhou Q, Chen F, Gao Y, Zhu B, Zhang X. An enzyme-responsive membrane for antibiotic drug release and local periodontal treatment. Colloids Surf B Biointerfaces 2019; 183:110454. [PMID: 31473407 DOI: 10.1016/j.colsurfb.2019.110454] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/19/2019] [Accepted: 08/21/2019] [Indexed: 10/26/2022]
Abstract
Periodontitis is a chronic, destructive inflammatory disease that injures tooth- supporting tissues, eventually leading to tooth loss. Complete eradication of periodontal pathogenic microorganisms is fundamental to allow periodontal healing and commonly precedes periodontal tissue regeneration. To address this challenge, we report a strategy for developing an enzyme-mediated periodontal membrane for targeted antibiotic delivery into infectious periodontal pockets; the unique components of the membrane will also benefit periodontal alveolar bone repair. In this approach, a chitosan membrane containing polyphosphoester and minocycline hydrochloride (PPEM) was prepared. Physical, morphological, and ultrastructural analyses were carried out in order to assess cellular compatibility, drug release and antibacterial activity in vitro. Additionally, the functionality of the PPEM membrane was evaluated in vivo with a periodontal defect model in rats. The results confirm that the PPEM membrane exhibits good physical properties with excellent antibacterial activity and successfully promotes periodontal tissue repair, making it promising for periodontal treatment.
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Affiliation(s)
- Ning Li
- Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, 200011, Shanghai, China; Department of Stomatology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, China
| | - Liting Jiang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, 200011, Shanghai, China; Department of Stomatology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, China
| | - Hua Jin
- Instrumental Analysis Center, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yan Wu
- Instrumental Analysis Center, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yongjia Liu
- Instrumental Analysis Center, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wei Huang
- Instrumental Analysis Center, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Li Wei
- Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 200025, Shanghai, China
| | - Qi Zhou
- Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 200025, Shanghai, China
| | - Feng Chen
- Department of Orthopaedics, Shanghai Fengxian Central Hospital, South Campus of Shanghai Sixth People's Hospital, Shanghai Jiaotong University, 201499, Shanghai, China
| | - Yiming Gao
- Department of Stomatology, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, China
| | - Bangshang Zhu
- Instrumental Analysis Center, School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Xiuyin Zhang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, 200011, Shanghai, China.
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23
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Yang Y, Li H, Xu Y, Dong Y, Shan W, Shen J. Fabrication and evaluation of dental fillers using customized molds via 3D printing technology. Int J Pharm 2019; 562:66-75. [PMID: 30878588 DOI: 10.1016/j.ijpharm.2019.03.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/09/2019] [Accepted: 03/11/2019] [Indexed: 12/12/2022]
Abstract
In view of the high incidence and long-term treatment of dental caries, personalized dental fillers with long therapeutic action have broad application prospects in the dental clinic. The objective of this study was to fabricate and evaluate novel dental fillers using state-of-the-art 3D printing technology. Tinidazole (TNZ), a commonly used antibacterial drug in the dental clinic, was chosen as the model compound. Models of molars with carious cavities were obtained via 3D scanning. TNZ dental fillers were indirectly produced by thermal pressing using customized 3D printed molds. In addition, bio-relevant in vitro dissolution and mechanical testing methods were developed using customized 3D printed release and compression molds, respectively. It was observed that the formability, mechanical properties, and release behavior of the TNZ dental fillers were affected by mold materials, plasticizers, and release modifiers. The developed dental fillers were capable of sustained releasing TNZ over one week. The TNZ release characteristics can be tailored based on clinical requirements by varying hydroxypropyl methylcellulose E5 (HPMC-E5) concentrations and filler dimensions. Moreover, computational simulation based on the finite element method showed that the biomechanical behavior of the TNZ dental fillers met the daily use requirement. The present study demonstrated that the state-of-the-art 3D printing technology can be used to design and fabricate personalized dental fillers with high mechanical strength and "on-demand" drug release characteristics.
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Affiliation(s)
- Yan Yang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China; College of Pharmacy, University of Rhode Island, Kingston, USA
| | - Haichao Li
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Yingying Xu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | | | - Weiguang Shan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China.
| | - Jie Shen
- College of Pharmacy, University of Rhode Island, Kingston, USA.
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24
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Wang X, Zhang Y, Huang J, Xia M, Liu L, Tian C, Hu R, Gui S, Chu X. Self-assembled hexagonal liquid crystalline gels as novel ocular formulation with enhanced topical delivery of pilocarpine nitrate. Int J Pharm 2019; 562:31-41. [PMID: 30878587 DOI: 10.1016/j.ijpharm.2019.02.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/29/2019] [Accepted: 02/22/2019] [Indexed: 01/04/2023]
Abstract
The aim of this paper was to develop hexagonal liquid crystalline (HII) gels that can be used as a novel ocular delivery system for pilocarpine nitrate (PN). HII gels were prepared by a vortex method using phytantriol/triglyceride/water (71.15: 3.85: 26, w/w) ternary system. The gels were characterized by crossed polarized light microscopy, small-angle X-ray scattering, differential scanning calorimetry and rheology. And, in vitro drug release behavior and ex vivo corneal permeation were investigated. Finally, preocular residence time evaluation, eye irritation test, histological examination and miotic tests were studied in vivo and compared with carbopol gel. Based on various characterization techniques, the inner structure of the gels were HII mesophase and exhibited a pseudoplastic fluid behaviour. In vitro release results revealed that PN could be released continuously from HII gel over a period of 24 h. The ex vivo apparent permeability coefficient of HII gel was 3.15-fold (P < 0.01) higher than that of the Carbopol gel. Compared with Carbopol gel, HII gel displayed longer residence time on the eyeballs surface using fluorescent labeling technology. Furthermore, the HII gel caused no ocular irritation was estimated by corneal hydration levels, Draize test and histological inspection. Additionally, in vivo miotic study showed that HII gel had a remarkably long-lasting decrease in the pupil diameter of rabbits. In conclusion, HII gels would be a promising sustained-release formulation for ocular drug delivery.
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Affiliation(s)
- Xingqi Wang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China
| | - Yong Zhang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China
| | - Jie Huang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China
| | - Mengqiu Xia
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China
| | - Liu Liu
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China
| | - Chunling Tian
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China
| | - Rongfeng Hu
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China; Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China
| | - Shuangying Gui
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China; Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China
| | - Xiaoqin Chu
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China; Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei, Anhui Province 230012, People's Republic of China.
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25
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Zhou C, Huang Z, Huang Y, Wang B, Yang P, Fan Y, Hou A, Yang B, Zhao Z, Quan G, Pan X, Wu C. In situ gelation of rhEGF-containing liquid crystalline precursor with good cargo stability and system mechanical properties: a novel delivery system for chronic wounds treatment. Biomater Sci 2019; 7:995-1010. [PMID: 30603758 DOI: 10.1039/c8bm01196f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
The objective of this study was to develop a novel delivery system for recombinant human epidermal growth factor (rhEGF) for chronic wound treatment. Such a delivery system should be of good cargo stability and system mechanical properties in order to guarantee a satisfactory wound-healing effect. rhEGF-containing lyotropic liquid crystalline precursors (rhEGF-LLCPs) with in situ gelation capability were considered as a promising candidate to achieve this aim. Various properties of the optimal formulations (rhEGF-LLCP1 and rhEGF-LLCP2) were characterized, including apparent viscosity, gelation time, in vitro release and phase behavior. The stability of rhEGF and system mechanical properties (i.e. mechanical rigidity and bioadhesive force) were verified. Interestingly, rhEGF-LLCP2 with a larger internal water channel diameter exhibited faster release rate in vitro and then better bioactivity in Balb/c 3T3 and HaCaT cell models. Moreover, rhEGF-LLCP2 showed distinct promotion effects on wound closure, inflammatory recovery and re-epithelization process in Sprague-Dawley rat models. In conclusion, rhEGF-LLCP emerged as a prospective candidate to preserve the stability and enhance the wound-healing effect of rhEGF, which might serve as a new delivery system for chronic wound therapies.
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Affiliation(s)
- Chan Zhou
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, Guangdong, P. R. China.
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26
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Tawfik MS, Abdel-Ghaffar KA, Gamal AY, El-Demerdash FH, Gad HA. Lycopene solid lipid microparticles with enhanced effect on gingival crevicular fluid protein carbonyl as a biomarker of oxidative stress in patients with chronic periodontitis. J Liposome Res 2019; 29:375-382. [DOI: 10.1080/08982104.2019.1566243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Maie S. Tawfik
- Department of Periodontology, Faculty of Dental Medicine, Ain Shams University, Cairo, Egypt
| | - Khaled A. Abdel-Ghaffar
- Department of Periodontology, Faculty of Dental Medicine, Ain Shams University, Cairo, Egypt
| | - Ahmed Y. Gamal
- Department of Periodontology, Faculty of Dental Medicine, Ain Shams University, Cairo, Egypt
| | - Fatma H. El-Demerdash
- Department of Periodontology, Faculty of Dental Medicine, Ain Shams University, Cairo, Egypt
| | - Heba A. Gad
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
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27
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Wang X, Zhang Y, Huang J, Tian C, Xia M, Liu L, Li Z, Cao J, Gui S, Chu X. A Novel Phytantriol-Based Lyotropic Liquid Crystalline Gel for Efficient Ophthalmic Delivery of Pilocarpine Nitrate. AAPS PharmSciTech 2019; 20:32. [PMID: 30603986 DOI: 10.1208/s12249-018-1248-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Accepted: 11/11/2018] [Indexed: 12/31/2022] Open
Abstract
The purpose of this paper was to investigate the potential of liquid crystalline (LC) gels for ophthalmic delivery, so as to enhance the bioavailability of pilocarpine nitrate (PN). The gels were prepared by a vortex method using phytantriol and water (in the ratio of 73:27 w/w). Their inner structures were confirmed by crossed polarized light microscopy, small-angle X-ray scattering, attenuated total reflectance-Fourier transform infrared spectrum, and rheology. The in vitro release studies revealed that PN could keep sustained release from the gels over a period of 12 h. The ex vivo apparent permeability coefficient of the gels demonstrated a 3.83-folds (P < 0.05) increase compared with that of eye drops. The corneal hydration levels of the gel maintained in the normal range of 79.46 ± 2.82%, hinting that the gel could be considered non-damaging and safe to the eyes. Furthermore, in vivo residence time evaluation suggested that a better retention performance of LC gel was observed in rabbit's eyes compared to eye drops. In vivo ocular irritation study indicated that LC gel was nonirritant and might be suitable for various eye applications. In conclusion, LC gels might represent a potential ophthalmic delivery strategy to overcome the limitations of eye drops.
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28
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Temperature triggering of kinetically trapped self-assemblies in citrem-phospholipid nanoparticles. Chem Phys Lipids 2018; 216:30-38. [DOI: 10.1016/j.chemphyslip.2018.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/28/2018] [Accepted: 09/05/2018] [Indexed: 11/22/2022]
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29
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Yang Z, Liang X, Jiang X, Guo J, Tao Y, Wang S, Cao Y, Gui S. Development and Evaluation of Minocycline Hydrochloride-Loaded In Situ Cubic Liquid Crystal for Intra-Periodontal Pocket Administration. Molecules 2018; 23:molecules23092275. [PMID: 30200615 PMCID: PMC6225298 DOI: 10.3390/molecules23092275] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/02/2018] [Accepted: 09/05/2018] [Indexed: 11/16/2022] Open
Abstract
In the present study, an injectable in situ liquid crystal formulation was developed for local delivery of minocycline hydrochloride (MH) for chronic periodontitis treatment. The physicochemical properties, phase structures, in vitro drug release and pharmacodynamics of in situ liquid crystals were investigated. The optimal formulation (phytantriol (PT)/propylene glycol (PG)/water, 63/27/10, w/w/w) loaded with 20 mg/g MH was proved to be injectable. The precursor formulation can form a cubic phase gel in excess water in 6.97 ± 0.10 s. The results of in vitro drug release suggested the MH presented a sustained release for 4 days. Liquid crystal precursor formulation significantly reduced gingival index, probing depth and alveolar bone loss compared to the model group (p < 0.01). Besides, the pathological characteristics of model rats were improved. The results suggested that MH-loaded in situ cubic liquid crystal possessed of sustained release ability and periodontal clinical symptoms improvement. The developed in situ cubic liquid crystal may be a potentially carrier in the local delivery of MH for periodontal diseases.
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Affiliation(s)
- Zhuanzhuan Yang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
| | - Xin Liang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
| | - Xiaojing Jiang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
| | - Jian Guo
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
| | - Yaotian Tao
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
| | - Shengmei Wang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
| | - Yingji Cao
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
| | - Shuangying Gui
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, China.
- Institute of Pharmaceutics, Anhui Academy of Chinese Medicine, Hefei 230012, China.
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30
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Wang X, Zhang Y, Gui S, Huang J, Cao J, Li Z, Li Q, Chu X. Characterization of Lipid-Based Lyotropic Liquid Crystal and Effects of Guest Molecules on Its Microstructure: a Systematic Review. AAPS PharmSciTech 2018; 19:2023-2040. [PMID: 29869308 DOI: 10.1208/s12249-018-1069-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/01/2018] [Indexed: 12/16/2022] Open
Abstract
Liquid crystals (LCs) are conventionally divided into thermotropic or lyotropic, based on the organization and sequence of the controlled molecular system. Lipid-based lyotropic liquid crystal (LLC), such as lamellar (Lα), bicontinuous cubic (QII), or hexagonal (HII) phases, have attracted wide interest in the last few decades due to their practical potential in diverse applications and notable structural complexity. Various guest molecules, such as biopharmaceuticals, chemicals, and additives, can be solubilized in either aqueous or oily phase. And the LLC microstructure can be altered to affect the rate of drug release eventually. To utilize these microstructural variations to adjust the drug release in drug delivery system (DDS), it is crucial to understand the structure variations of the LLC caused by different types of guest molecules. Therefore, in this article, we review the effect of guest molecules on lipid-based LLC microstructures. In particular, we focus on the different characterization methods to evaluate this change caused by guest substances, such as polarized light microscopy (PLM), small-angle X-ray scattering (SAXS), Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), self-diffusion nuclear magnetic resonance (SD-NMR), and so on.
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31
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Li Q, Cao J, Li Z, Chu X. Cubic Liquid Crystalline Gels Based on Glycerol Monooleate for Intra-articular Injection. AAPS PharmSciTech 2018; 19:858-865. [PMID: 29027137 DOI: 10.1208/s12249-017-0894-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 09/25/2017] [Indexed: 11/30/2022] Open
Abstract
In situ gels containing sinomenine hydrochloride (SMH) for intra-articular (IA) administration to treat rheumatoid arthritis (RA) were designed and investigated in this study. Glycerol monooleate (GMO) was used due to the potential to generate viscous crystalline phase structures upon water absorption. The gels were evaluated using different parameters: syringeability, gelation, viscosity, and drug release. And, polarized light microscopy (PLM), small-angle X-ray scattering investigation (SAXS), and rheological studies were used to analyze their internal structures. In vitro drug release studies were performed by the dialysis membrane diffusion method. The syringeability, viscosity, gelation time, and water for gelation of the obtained preparation met the requirements of IA injection. PLM, SAXS, and rheological analysis showed that all samples had transformed from flowable isotropic solution phases to the inverse cubic (V2) phases upon excess water. And, the gels were found to be able to maintain the drug release for more than 1 week. Results showed that in situ gels based on GMO liquid crystalline could provide a sustained system for SMH. Due to its sustained release, the in situ cubic gels were suitable for IA injection to treat RA.
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32
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Mei L, Chen J, Yu S, Huang Y, Xie Y, Wang H, Pan X, Wu C. Expansible thermal gelling foam aerosol for vaginal drug delivery. Drug Deliv 2017; 24:1325-1337. [PMID: 28920714 PMCID: PMC8241080 DOI: 10.1080/10717544.2017.1375575] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/29/2017] [Accepted: 08/31/2017] [Indexed: 11/18/2022] Open
Abstract
Vaginal delivery of antimicrobial drugs is the most effective method for the local treatment of the vaginal infections. However, current vaginal drug delivery systems (VDDS), including gel, lotion, aerosol and cream, are suffering from low penetration in the deep vaginal rugae and easy elimination by self-cleaning of vaginal canal. To address these issues, a foam aerosol based on the thermal transformation was designed to improve penetration efficiency and achieve the extended retention. The expansible thermal gelling foam aerosol (ETGFA) consisting of thermal sensitive matrix, silver nanoparticle, adhesive agent and propellant, was optimized by evaluations of precursor viscosity, foam expansion, thermal gelation, gel adhesiveness, antimicrobial effects and tissue irritation. The ETGFA would penetrate to the deep vaginal rugae to cover the infectious sites by foam expansion. Drug leakage was intended to be avoided by the thermal gelation at physiological temperature before foam collapse. The gel could be retained in the vaginal canal for extended time due to its superior adhesiveness when compared to the commercial gel Asimi®. The ETGFA provided extended drug release for over 4 h and maintained effective drug concentrations at the infectious sites. The ETGFA containing silver nanoparticles showed dose-dependent antimicrobial effects on the vaginal floras and irritation reduction to the vaginal tissues. The results demonstrated that the ETGFA could overcome the limitations of conventional dosage forms, including poor drug penetration, carrier retention and patient compliance and satisfied the requirements for vaginal drug delivery.
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Affiliation(s)
- Liling Mei
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jintian Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Siqin Yu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ying Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yecheng Xie
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Hui Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chuanbin Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
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