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Wande DP, Qiu Y, Chen S, Yao L, Xu Y, Yao J, Xiong H. Modified chitosan nanogel-polymersomes for oral co-delivery of oxaliplatin and rapamycin for synergistic chemotherapy. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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2
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Yang J, Chen Y, Zhao L, Zhang J, Luo H. Constructions and Properties of Physically Cross-Linked Hydrogels Based on Natural Polymers. POLYM REV 2022. [DOI: 10.1080/15583724.2022.2137525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- Jueying Yang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Yu Chen
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing, China
- Sports & Medicine Integration Research Center (SMIRC), Capital University of Physical Education and Sports, Beijing, China
| | - Lin Zhao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Jinghua Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
| | - Hang Luo
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing, China
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Chen Y, Song D, Hou Q, Ma M, Zhao X, Yang T, Xie H, Ding P. A Novel Drug Self-Delivery System from Fatty Alcohol Esters of Tranexamic Acid for Venous Malformation Sclerotherapy. Pharmaceutics 2022; 14:343. [PMID: 35214075 PMCID: PMC8876579 DOI: 10.3390/pharmaceutics14020343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/25/2022] [Accepted: 01/29/2022] [Indexed: 11/29/2022] Open
Abstract
Venous malformation (VM), which causes severe damage to patients' appearance and organ function, is one of the most common vascular malformations. At present, many drugs in clinical treatment cause various adverse reactions. Herein, we synthesized cationic amphiphilic gelators (TA6, TA8, and TA9) by introducing saturated carbon chains of different lengths to tranexamic acid (TA), which could self-assemble into low-molecular-weight gels (LMWGs) as drug delivery carriers by hydrogen bonds, van der Waals forces, and hydrophobic interactions. The rheological properties, gelation driving force and drug release profiles of TA6, TA8, and TA9 hydrogels were characterized, and the results indicated that the hydrogels prepared in this study possessed the typical characteristics of a gel and could release drugs slowly. More importantly, the TA9 gelator showed significant pharmacological activity, in that it served as both an active drug compound and a drug carrier. The in vitro experiments demonstrated that TA9 induced HUVECs death and hemolysis by destroying cell membranes in a dose-dependent manner, and caused cell death and hemolysis at a concentration of 0.09 µM/mL. Meanwhile, we found TA9 could interact not only with fibrinogen, but also with other endogenous molecules in the blood. After the administration of TA9 hydrogel for 15 days, macroscopic imaging and histological evaluation in mice and rabbits displayed obvious thrombi, inflammatory reactions, and venous embolization, indicating that the mechanism of the TA9 hydrogel in treating VM was involved in two processes. Firstly, the TA9 hydrogel relied on its mechanical strength to physically block veins and continuously release TA9, in situ, for targeted therapy. Then, TA9 destroyed endothelial cells and damaged venous walls critically, causing thrombi. Most excitingly, TA9 was hydrolyzed to TA by enzymes that inhibited the degradation of thrombi by plasmin to prolong the embolization time and to promote venous fibrosis. Compared with other clinically available sclerosants, the degradation of TA9 also empowered a better biocompatibility and biodegradability for the TA9 hydrogel. In conclusion, we synthesized a potentially safe and effective derivative of TA and developed a low-molecular-weight gel as a self-delivery system for TA in treating VM.
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Affiliation(s)
- Yongfeng Chen
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (D.S.); (Q.H.); (M.M.)
| | - Di Song
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (D.S.); (Q.H.); (M.M.)
| | - Qianqian Hou
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (D.S.); (Q.H.); (M.M.)
| | - Mengrui Ma
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (D.S.); (Q.H.); (M.M.)
| | - Xiaoyun Zhao
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China;
| | - Tianzhi Yang
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, Husson University, Bangor, ME 13802, USA;
| | - Huichao Xie
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (D.S.); (Q.H.); (M.M.)
| | - Pingtian Ding
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (Y.C.); (D.S.); (Q.H.); (M.M.)
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Progress on Preparation of pH/Temperature-Sensitive Intelligent Hydrogels and Applications in Target Transport and Controlled Release of Drugs. INT J POLYM SCI 2021. [DOI: 10.1155/2021/1340538] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Hydrogels with three-dimensional network structure, hydrophilic, and insoluble in water which are ideal carrier materials for intelligent drug delivery systems. Intelligent hydrogel has become a research frontier and hotspot because of its intelligence, high efficiency, safety, and convenience in drug controlled and prolonged release. It has a broad application prospect in the medicine and biomedicine fields and can lead the medicine fields into a new era of “precise treatment.” Based on the latest research progress, the main preparation methods of hydrogel and the development of the drug delivery system are briefly introduced. The most promising three intelligent hydrogels in the human physiological environment, namely, pH responsiveness, temperature responsiveness, and pH/temperature dual responsiveness, are emphatically reviewed. Their release mechanisms, targeting transport, and controlled-prolonged release of drug are also discussed. In addition, some suggestions for the main problems and future development were given.
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Chitosan hydrogels for sustained drug delivery. J Control Release 2020; 326:150-163. [PMID: 32562854 DOI: 10.1016/j.jconrel.2020.06.012] [Citation(s) in RCA: 174] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 06/11/2020] [Accepted: 06/13/2020] [Indexed: 12/22/2022]
Abstract
Sustainable and controlled delivery of drugs is at the centre of a huge amount of undertaken researches. The ability of hydrogels, high water content materials, to achieve a local and delayed-delivery has already been demonstrated for a wide variety of therapeutic agents and various polymer natures. In particular, chitosan, a natural polymer, stands out as a first choice material for hydrogels elaboration in biomedical, cosmetic, and health related applications, owing to its interesting properties (as biocompatibility, biodegradability, antimicrobial capacity, and mucoadhesivity). Moreover, chitosan also allows drugs to go easier through biological barriers. The main objective of this review is to report the various uses of chitosan hydrogels as drug delivery devices to control and/or delay the release of drugs loaded into their three dimensional matrix. A wide spectrum of corresponding biomedical applications of these systems can be encountered in the literature, whatever the physicochemical nature of drugs (hydrophilic, hydrophobic, macromolecular), as detailed in this review.
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Dehghan-Baniani D, Chen Y, Wang D, Bagheri R, Solouk A, Wu H. Injectable in situ forming kartogenin-loaded chitosan hydrogel with tunable rheological properties for cartilage tissue engineering. Colloids Surf B Biointerfaces 2020; 192:111059. [PMID: 32380404 DOI: 10.1016/j.colsurfb.2020.111059] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/16/2020] [Accepted: 04/12/2020] [Indexed: 11/22/2022]
Abstract
Limited regeneration capacity of cartilage can be addressed by tissue engineering approaches including localized delivery of bioactive agents using biomaterials. Although chitosan hydrogels have been considered as appropriate candidates for these purposes, however, their poor mechanical properties limit their real applications. Here, we develop in situ forming chitosan hydrogels with enhanced shear modulus by chemical modification of chitosan using N-(β-maleimidopropyloxy) succinimide ester (BMPS). Moreover, we utilize β-Glycerophosphate (β-GP) in the hydrogels for achieving thermosensitivity. We investigate the effects of BMPS, β-GP and chitosan concentration on rheological and swelling properties of the hydrogels. Accordingly, we generate significant statistical models by response surface method to predict these properties. These models provide us beneficial tools to tune the hydrogel properties depending on the cartilage defect location and properties. Finally, we incorporate a recently discovered small biomolecule, kartogenin (KGN), for promoting chondrogenesis of stem cells into the optimized hydrogel. The hydrogel's shear modulus is 78 ± 5 kPa which covers a wide range of human articular cartilage shear modulus (50-250 kPa). It can be injected to the defects non-invasively at room temperature which gels at 37 °C within minutes. Additionally, it provides a sustained KGN release for ∼40 days that may eliminate the need of multiple injections. In vitro chondrogenic results confirm enhanced chondrogenic differentiation of human adipose mesenchymal stem cells (hAMSCs) treated with KGN-loaded hydrogel, compared to pure KGN. Based on the enhanced hydrogel shear modulus, injectability, gelation behavior, long-term drug release and in vitro results, this thermosensitive hydrogel looks promising for cartilage tissue engineering.
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Affiliation(s)
- Dorsa Dehghan-Baniani
- Department of Chemical and Biological Engineering, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Hong Kong, China; Polymeric Materials Research Group, Department of Materials Science and Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-9466, Iran
| | - Yin Chen
- Department of Chemical and Biological Engineering, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Dong Wang
- Department of Chemistry, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Reza Bagheri
- Polymeric Materials Research Group, Department of Materials Science and Engineering, Sharif University of Technology, Tehran, P.O. Box 11155-9466, Iran
| | - Atefeh Solouk
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Hongkai Wu
- Department of Chemical and Biological Engineering, Division of Biomedical Engineering, The Hong Kong University of Science and Technology, Hong Kong, China; Department of Chemistry, The Hong Kong University of Science and Technology, Hong Kong, China.
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In-situ forming chitosan implant-loaded with raloxifene hydrochloride and bioactive glass nanoparticles for treatment of bone injuries: Formulation and biological evaluation in animal model. Int J Pharm 2020; 580:119213. [PMID: 32165229 DOI: 10.1016/j.ijpharm.2020.119213] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/01/2020] [Accepted: 03/07/2020] [Indexed: 01/19/2023]
Abstract
In-situ forming implants receive great attention for repairing serious bone injuries. The aim of the present study was to prepare novel chitosan in-situ forming implants (CIFI) loaded with bioactive glass nanoparticles and/or raloxifene hydrochloride (RLX). Incorporating raloxifene hydrochloride (RLX) as a selective estrogen receptor modulator was essential to make use of its anti-resorptive properties. The prepared formulae were tested for their in-vitro gelation time, drug release, injectability, rheological properties, erosion rate and morphological properties. Results revealed that the formulation composed of 1% (w/v) chitosan with 2% (w/v) NaHCO3 and 1% (w/v) bioactive glass nanoparticles (CIFI-BG) possessed the most sustained drug release profile which extended over four months with low burst release effect compared to the same formulation lacking bioactive glass nanoparticles (CIFI). Selected formulations were tested for their ability to enhance bone regeneration in induced puncture in rate tibia. Results declared that these formulations were able to enhance bone regeneration after 12 weeks in comparison to the untreated tibial punctures and that containing bioactive glass could be considered as novel approach for treatment of serious bone injuries which require long term treatment and internal mechanical bone support during healing.
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Liu Q, Li P, Yang Z, Qu B, Qin C, Meng S, Fang H, Wu R, Cheng T, Yang D. Multi-stage surgery combined with radiotherapy for treatment of giant anterior chest wall keloid: A case report. Medicine (Baltimore) 2020; 99:e18886. [PMID: 31977896 PMCID: PMC7004727 DOI: 10.1097/md.0000000000018886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
RATIONALE Giant keloids often have indications for surgical resection, but postoperative reconstruction of the skin and high recurrence of keloids are a challenge for clinical treatment. This article reports a rare successful treatment of a giant keloid in the anterior chest wall by multistage surgery combined with radiotherapy, which is why this case is meaningful. PATIENT CONCERNS A 66-year-old woman presented a giant keloid with ulcerations and severe itching on the anterior chest wall. She had a history of keloid disease for more than 10 years, and had been treated by multiple operations, with no success. DIAGNOSES The patient was diagnosed as keloid based on her history and symptoms. Histopathology findings supported our diagnosis. INTERVENTIONS We successfully excised the keloid after 5 operations and 2 rounds of electron-beam radiotherapy, which was applied at 24 hours after the 4th and 5th operation. OUTCOMES There was no sign of recurrence over the follow-up period of 24 months. LESSONS The combination of multistage surgery and radiotherapy presents as a good choice for the treatment of giant keloids.
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Affiliation(s)
- Qingwu Liu
- School of Clinical Medicine, Beijing University of Chinese Medicine
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University
| | - Ping Li
- School of Clinical Medicine, Beijing University of Chinese Medicine
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University
| | - Zhishan Yang
- School of Clinical Medicine, Beijing University of Chinese Medicine
- China-Japan Friendship Hospital, Beijing, China
| | - Baoquan Qu
- School of Clinical Medicine, Beijing University of Chinese Medicine
- China-Japan Friendship Hospital, Beijing, China
| | - Chunfang Qin
- School of Clinical Medicine, Beijing University of Chinese Medicine
- China-Japan Friendship Hospital, Beijing, China
| | - Shengnan Meng
- School of Clinical Medicine, Beijing University of Chinese Medicine
- China-Japan Friendship Hospital, Beijing, China
| | - Huijuan Fang
- School of Clinical Medicine, Beijing University of Chinese Medicine
- China-Japan Friendship Hospital, Beijing, China
| | - Ruiying Wu
- School of Clinical Medicine, Beijing University of Chinese Medicine
- China-Japan Friendship Hospital, Beijing, China
| | - Tiantian Cheng
- School of Clinical Medicine, Beijing University of Chinese Medicine
- China-Japan Friendship Hospital, Beijing, China
| | - Dingquan Yang
- School of Clinical Medicine, Beijing University of Chinese Medicine
- China-Japan Friendship Hospital, Beijing, China
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A dual-action chitosan-based nanogel system of triclosan and flurbiprofen for localised treatment of periodontitis. Int J Pharm 2019; 570:118659. [PMID: 31493495 DOI: 10.1016/j.ijpharm.2019.118659] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 08/13/2019] [Accepted: 09/01/2019] [Indexed: 11/22/2022]
Abstract
This study aimed to develop a dual action, namely anti-inflammatory and antimicrobial, nanogels (NG) for the treatment of periodontitis using triclosan (TCS) and flurbiprofen (FLB). Triclosan, an antimicrobial drug, was prepared as nanoparticles (NPs) using poly-ε-caprolactone (PCL), while flurbiprofen, an anti-inflammatory drug, was directly loaded in a chitosan (CS) based hydrogel. The entwinement of both NPs and hydrogel loaded systems resulted in the NG. The characterisation data confirmed that the developed formulation consists of nanosized spherical structures and displays pH-dependent swelling/erosion and temperature-responsiveness. Besides, the NG exhibited adequate bioadhesiveness using the chicken pouch model and displayed antibacterial activity through the agar plate method. An in-vivo study of the NG on experimental periodontitis (EP) rats confirmed the dual antibacterial and anti-inflammatory effects which revealed an excellent therapeutic outcome. In conclusion, a dual action NG was successfully developed and proved to have superior therapeutic effects in comparison to physical mixtures of the individual drugs.
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MRI analysis of hydrogel-loaded apatinib for local therapy of hepatocellular carcinoma model in nude mice. Biochem Biophys Res Commun 2018; 509:529-534. [PMID: 30598262 DOI: 10.1016/j.bbrc.2018.12.120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 12/15/2018] [Indexed: 12/25/2022]
Abstract
AIM To investigate the effect of local treatment of gadolinium-polyethylene glycol (Gd-PEG) hydrogel containing apatinib injected into hepatocellular carcinoma model of HepG2 in nude mice, and to evaluate the MRI findings in vivo. METHODS HepG2 cells were treated in vitro and OD 450 value were measured. The four groups (n = 6) were Apatinib-Gd-PEG hydrogel, Gd-PEG hydrogel, Apatinib, and Saline. T1WI and DWI scans were performed before and 1d, 3d, and 14d postoperatively. The samples were examined by histomorphology and immunohistochemistry for CD34 and VEGFR2. Microvessel density (MVD) was evaluated and the average optical density (AOD) of VEGFR2 was obtained by IPP6.0 image software. RESULTS The OD450-time curves of Gd-PEG hydrogel and phosphate buffer saline (PBS) were similar and that of apatinib at all concentrations are located below; the higher the concentration, the lower the curve. On T1WI and DWI, the newly injected Gd-PEG hydrogel showed significant high signal and was immobilized in the tumor. Subsequently, the size and signal of Gd-PEG hydrogel gradually decreased with time. In Apatinib-Gd-PEG hydrogel group, compared with other three groups, MRI and histomorphology showed that the necrotic area of hepatocellular carcinoma model was larger, immunohistochemistry displayed minimal expression of CD34 and VEGFR2, the AOD of VEGFR2 and MVD differed markedly. CONCLUSION Gd-PEG hydrogel can significantly enhance and prolong the inhibitory effect of apatinib. It can be visualized by MRI, which can be used to evaluate the local therapeutic effect.
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Zhang L, Chen F, Zheng J, Wang H, Qin X, Pan W. Chitosan-based liposomal thermogels for the controlled delivery of pingyangmycin: design, optimization and in vitro and in vivo studies. Drug Deliv 2018; 25:690-702. [PMID: 29484910 PMCID: PMC6058478 DOI: 10.1080/10717544.2018.1444684] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Pingyangmycin (PYM) has been applied clinically for many years to treat vascular malformations (VM) in China. The major limitation of PYM injections is quick diffusion from the injection site, which increases side effects, especially the possibility of pulmonary injury. In this paper, chitosan/glycerophosphate disodium (CS/GP) thermogels containing liposomes for sustained and localized PYM delivery were prepared and optimized by a three-level three-factorial Box–Behnken experimental design to evaluate the effects of different variables (the PYM concentration, CS amount and GP content), on the selected responses (cumulative percentage PYM released in 1 day, 9 days and the rate constant k). The results revealed that the optimized PYM liposomal thermogels had a controlled PYM release for 14 days in vitro, which confirmed the validity of optimization. In vitro morphological observation, cell cycle and apoptosis analysis showed an effective anti-proliferation action of PYM liposomal thermogels on human vascular endothelial cells (EA.hy926). In vivo pharmacokinetics research in rabbits displayed that compared with PYM liposomes and PYM thermogels, PYM liposomal thermogels had a better controlled delivery of PYM. Histological examination of rabbit ear veins showed that after local application with PYM lipsomal thermogels for 21 days, obvious vein thrombosis and inflammatory reaction could be observed. The above results indicated that PYM-loaded lipsomal CS/GP thermogels might have a good prospect for the treatment of VM.
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Affiliation(s)
- Ling Zhang
- a Department of Biotherapy , Cancer Research Institute, The First Affiliated Hospital of China Medical University , Shenyang , China
| | - Fen Chen
- b Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications , Liaoning University of Traditional Chinese Medicine , Shenyang , China
| | - Jiatong Zheng
- c Department of Pharmaceutics , School of Pharmacy, Shenyang Pharmaceutical University , Shenyang , China
| | - Hongwei Wang
- d Department of Oromaxillofacial Head and Neck Oncology , Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology , Shanghai , China
| | - Xingjun Qin
- d Department of Oromaxillofacial Head and Neck Oncology , Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology , Shanghai , China
| | - Weisan Pan
- c Department of Pharmaceutics , School of Pharmacy, Shenyang Pharmaceutical University , Shenyang , China
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Superselective Transarterial Chemoembolization as an Alternative to Surgery in Symptomatic/Enlarging Liver Hemangiomas. World J Surg 2018. [PMID: 28634838 DOI: 10.1007/s00268-017-4069-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Transarterial embolization of liver hemangiomas has not been considered to be consistently effective. METHODS The charts of 25 patients who underwent superselective transarterial chemoembolization with the bleomycin-lipiodol emulsion were evaluated retrospectively. RESULTS Twenty-two patients had abdominal pain; asymptomatic/vaguely symptomatic enlargement was the treatment indication in three patients. A single session was conducted in 17 patients, two sessions in 7 and three sessions in one. After the first session, lesion volume decreased by median (range) 51% (10-92%) from median (range) 634 (226-8435) to 372(28-4710) cm3 (p < 0.01), after a median period of 4 months (range 2-8). A second session was performed in eight patients (median (range) initial volume 1276 (441-8435) cm3) with persistent complaints and/or large lesions receiving feeders from both right and left hepatic arteries (staged treatment). Median (range) lesion size decreased further from 806 (245-4710) to 464 (159-2150) cm3 (p < 0.01). Three patients experienced a postembolization syndrome that persisted after the first week. Seventeen of the 22 symptomatic patients (77%) reported resolution or marked amelioration of complaints. Regrowth after initial regression was not observed during median (range) 14 (8-39) months of follow-up (n:18). CONCLUSION Transarterial chemoembolization with the bleomycin-lipiodol emulsion is a potential alternative to surgery for symptomatic/enlarging liver hemangiomas. Volume reduction is universal, and symptom control is satisfactory. Centrally located and very large (>1000 cm3) lesions may require two sessions.
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Wang X, Young DJ, Wu YL, Loh XJ. Thermogelling 3D Systems towards Stem Cell-Based Tissue Regeneration Therapies. Molecules 2018; 23:E553. [PMID: 29498651 PMCID: PMC6017244 DOI: 10.3390/molecules23030553] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/25/2018] [Accepted: 02/26/2018] [Indexed: 02/08/2023] Open
Abstract
Stem cell culturing and differentiation is a very important research direction for tissue engineering. Thermogels are well suited for encapsulating cells because of their non-biotoxic nature and mild sol-gel transition as temperature increases. In particular, thermogels provide a 3D growth environment for stem cell growth, which is more similar to the extracellular matrix than flat substrates, so thermogels as a medium can overcome many of the cell abnormalities caused by 2D cell growth. In this review, we summarize the applications of thermogels in cell and stem cell culture in recent years. We also elaborate on the methods to induce stem cell differentiation by using thermogel-based 3D scaffolds. In particular, thermogels, encapsulating specific differentiation-inducing factor and having specific structures and moduli, can induce the differentiation into the desired tissue cells. Three dimensional thermogel scaffolds that control the growth and differentiation of cells will undoubtedly have a bright future in regenerative medicine.
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Affiliation(s)
- Xiaoyuan Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
| | - David James Young
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore 4558, Queensland, Australia.
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research, School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, China.
| | - Xian Jun Loh
- A*STAR (Agency for Science, Technology and Research), Institute of Materials Science and Engineering, 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634, Singapore.
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Synthesis of stimuli–responsive chitosan–based hydrogels by Diels–Alder cross–linking `click´ reaction as potential carriers for drug administration. Carbohydr Polym 2018; 183:278-286. [DOI: 10.1016/j.carbpol.2017.12.034] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 12/11/2017] [Accepted: 12/13/2017] [Indexed: 01/08/2023]
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Hyaluronic acid-based nano-sized drug carrier-containing Gellan gum microspheres as potential multifunctional embolic agent. Sci Rep 2018; 8:731. [PMID: 29335649 PMCID: PMC5768792 DOI: 10.1038/s41598-018-19191-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 12/22/2017] [Indexed: 02/07/2023] Open
Abstract
The purpose of this study was to develop a gellan gum-based multifunctional embolic agent. Calibrated spherical gellan gum and nanoparticle-containing gellan gum microspheres were prepared via water-in oil emulsification method. Self-assembled nanoparticles composed of short-chain hyaluronic acid and polyethylenimine as the doxorubicin carrier were prepared. The short-chain hyaluronic acid/polyethylenimine/ doxorubicin (sHH/PH/Dox) with the mean size was 140 ± 8 nm. To examine sHH/PH/Dox nanoparticle uptake into cells, the results confirmed that sHH/PH nanoparticles as drug carrier can facilitate the transport of doxorubicin into HepG2 liver cancer cells. Subsequently, sHH/PH/Dox merged into the gellan gum (GG) microspheres forming GG/sHH/PH/Dox microsphere. After a drug release experiment lasting 45 days, the amount of released doxorubicin from 285, 388, and 481 μm GG/sHH/PH/Dox microspheres were approximately 4.8, 1.8 and 1.1-fold above the IC50 value of the HepG2 cell. GG/sHH/PH/Dox microspheres were performed in rabbit ear embolization model and ischemic necrosis on ear was visible due to the vascular after 8 days. Regarding the application of this device in the future, we aim to provide better embolization agents for transcatheter arterial chemoembolization (TACE).
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Jung BK, Oh E, Hong J, Lee Y, Park KD, Yun CO. A hydrogel matrix prolongs persistence and promotes specific localization of an oncolytic adenovirus in a tumor by restricting nonspecific shedding and an antiviral immune response. Biomaterials 2017; 147:26-38. [PMID: 28923683 DOI: 10.1016/j.biomaterials.2017.09.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 08/31/2017] [Accepted: 09/04/2017] [Indexed: 01/04/2023]
Abstract
Currently, intratumoral injection of an oncolytic adenovirus (Ad) is the conventional administration route in clinical trials. Nonetheless, the locally administered Ad disseminates to the surrounding nontarget tissues and has short biological activity due to immunogenicity of Ad, thus necessitating multiple injections to achieve a sufficient therapeutic index. In the present study, a tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-expressing oncolytic Ad (oAd-TRAIL) was encapsulated in a gelatin hydrogel (oAd-TRAIL/gel) to enhance and prolong antitumor efficacy of the virus after a single intratumoral injection. oAd-TRAIL/gel showed greater antitumor efficacy than naked oAd-TRAIL did due to enhanced and prolonged intratumoral accumulation of Ad up to a 20-day period, showing potent induction of apoptosis and inhibition of tumor cell proliferation. Furthermore, the gel system effectively prevented shedding of oncolytic Ad from the injection site to hepatic and other healthy tissues. oAd-TRAIL/gel treatment resulted in a markedly weaker antiviral immune response against Ad relative to naked oAd-TRAIL, further contributing to prolonged persistence of the oncolytic Ad in tumor tissue. Moreover, the hydrogel matrix preserved oAd-TRAIL's ability to induce an antitumor immune response, resulting in higher intratumoral infiltration by CD4+/CD8+ T cells. Taken together, these findings show that single intratumoral administration of the Ad/hydrogel modality may prolong and potentiate the therapeutic efficacy of Ad, modulate the immune reaction in favor of the virotherapy, and enhance intratumoral localization of the virus, ultimately overcoming limitations of oncolytic virotherapy revealed in recent clinical trials.
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Affiliation(s)
- Bo-Kyeong Jung
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Eonju Oh
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - JinWoo Hong
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Yunki Lee
- Department of Molecular Science and Technology, Ajou University, 5 Woncheon, Yeongtong, Suwon 443-749, Republic of Korea
| | - Ki Dong Park
- Department of Molecular Science and Technology, Ajou University, 5 Woncheon, Yeongtong, Suwon 443-749, Republic of Korea
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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In situ forming hydrogels based on chitosan for drug delivery and tissue regeneration. Asian J Pharm Sci 2016. [DOI: 10.1016/j.ajps.2016.07.001] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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18
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Yao Y, Xia M, Wang H, Li G, Shen H, Ji G, Meng Q, Xie Y. Preparation and evaluation of chitosan-based nanogels/gels for oral delivery of myricetin. Eur J Pharm Sci 2016; 91:144-53. [DOI: 10.1016/j.ejps.2016.06.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/06/2016] [Accepted: 06/17/2016] [Indexed: 11/27/2022]
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Li Z, Cao J, Li H, Liu H, Han F, Liu Z, Tong C, Li S. Self-assembled drug delivery system based on low-molecular-weight bis-amide organogelator: synthesis, properties and in vivo evaluation. Drug Deliv 2016; 23:3168-3178. [PMID: 26912188 DOI: 10.3109/10717544.2016.1157841] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
CONTEXT Orgnaogels based on amino acid derivatives have been widely used in the area of drug delivery. OBJECTIVE An organogel system based on l-lysine derivatives was designed and prepared to induce a thermal sensitive implant with higher transition temperature, better mechanical strength, and shorter gelation time. MATERIALS AND METHODS The organogel was prepared by injectable soybean oil and methyl (S)-2,5-ditetradecanamidopentanoate (MDP), which was synthesized for the first time. Candesartan cilexetil (CC) was chosen as model drug. Different formulations were designed and optimized by response surface method. Thermal, rheology properties, and gelation kinetics of the optimized formulation had been characterized. The release behaviors in vitro, as well as in vivo were evaluated in comparison with the oily solution of drugs. Finally, the local inflammation response of in situ organogel was assessed by histological analysis. RESULTS AND DISCUSSION Results showed that the synthesized gelator, MDP, had a good gelation ability and the organogels obtained via the self-assembly of gelators in vegetable oils exhibited great thermal and rheology properties, which guaranteed their state in body. In vivo pharmacokinetic demonstrated that the organogel formulation could extend the drug release and maintain a therapeutically effective plasma concentration at least 10 d. In addition, this implant showed acceptable moderate inflammation. CONCLUSION The in situ forming l-lysine-derivative-based organogel could be a promising matrix for sustained drug delivery of the drugs with low solubility.
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Affiliation(s)
- Zhen Li
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, P.R. China
| | - Jinxu Cao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, P.R. China
| | - Heran Li
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, P.R. China
| | - Hongzhuo Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, P.R. China
| | - Fei Han
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, P.R. China
| | - Zhenyun Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, P.R. China
| | - Chao Tong
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, P.R. China
| | - Sanming Li
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, Liaoning, P.R. China
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