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Kinali H, Kalaycioglu GD, Boyacioglu O, Korkusuz P, Aydogan N, Vargel I. Clinic-oriented injectable smart material for the treatment of diabetic wounds: Coordinating the release of GM-CSF and VEGF. Int J Biol Macromol 2024; 276:133661. [PMID: 38992546 DOI: 10.1016/j.ijbiomac.2024.133661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/16/2024] [Accepted: 07/02/2024] [Indexed: 07/13/2024]
Abstract
Chronic wounds are often caused by diabetes and present a challenging clinical problem due to vascular problems leading to ischemia. This inhibits proper wound healing by delaying inflammatory responses and angiogenesis. To address this problem, we have developed injectable particle-loaded hydrogels which sequentially release Granulocyte-macrophage- colony-stimulating-factor (GM-CSF) and Vascular endothelial growth factor (VEGF) encapsulated in polycaprolactone-lecithin-geleol mono-diglyceride hybrid particles. GM-CSF promotes inflammation, while VEGF facilitates angiogenesis. The hybrid particles (200-1000 nm) designed within the scope of the study can encapsulate the model proteins Bovine Serum Albumin 65 ± 5 % and Lysozyme 77 ± 10 % and can release stably for 21 days. In vivo tests and histological findings revealed that in the hydrogels containing GM-CSF/VEGF-loaded hybrid particles, wound depth decreased, inflammation phase increased, and fibrotic scar tissue decreased, while mature granulation tissue was formed on day 10. These findings confirm that the hybrid particles first initiate the inflammation phase by delivering GM-CSF, followed by VEGF, increasing the number of vascularization and thus increasing the healing rate of wounds. We emphasize the importance of multi-component and sequential release in wound healing and propose a unifying therapeutic strategy to sequentially deliver ligands targeting wound healing stages, which is very important in the treatment of the diabetic wounds.
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Affiliation(s)
- Hurmet Kinali
- Department of Bioengineering, Graduate School of Science and Engineering, Hacettepe University, Beytepe, Ankara 06800, Turkey
| | - Gokce Dicle Kalaycioglu
- Department of Chemical Engineering, Faculty of Engineering, Hacettepe University, Ankara 06800, Turkey
| | - Ozge Boyacioglu
- Department of Bioengineering, Graduate School of Science and Engineering, Hacettepe University, Beytepe, Ankara 06800, Turkey; Department of Medical Biochemistry, Faculty of Medicine, Atılım University, 06830 Gölbaşı, Ankara, Turkey
| | - Petek Korkusuz
- Department of Histology and Embryology, Faculty of Medicine, Hacettepe University, 06100 Sıhhiye, Ankara, Turkey
| | - Nihal Aydogan
- Department of Bioengineering, Graduate School of Science and Engineering, Hacettepe University, Beytepe, Ankara 06800, Turkey; Department of Chemical Engineering, Faculty of Engineering, Hacettepe University, Ankara 06800, Turkey.
| | - Ibrahim Vargel
- Department of Bioengineering, Graduate School of Science and Engineering, Hacettepe University, Beytepe, Ankara 06800, Turkey; Department of Plastic and Reconstructive Surgery, Faculty of Medicine, Hacettepe University, 06560 Ankara, Turkey.
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Kim J, Kim D, Shin D, Sung T, Rhee S, Kim M, Nam C, Lee I, Son W. Effect of temperature-responsive hydrogel on femoral and sciatic nerve blocks using bupivacaine in Beagle dogs. Vet Med Sci 2022; 9:91-97. [PMID: 36495171 PMCID: PMC9857004 DOI: 10.1002/vms3.1049] [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] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES To compare the duration of regional anesthesia of the pelvic limb using bupivacaine with and without a temperature-responsive hydrogel (TRH) in dogs. METHODS Under anesthesia using medetomidine (10 μg·kg-1 ), alfaxalone (2 mg·kg-1 ), and isoflurane, seven healthy male Beagles received four injections of 0.5% bupivacaine (1 mg·kg-1 with 5 μg·ml-1 epinephrine) to block the femoral and sciatic nerves bilaterally via ultrasound with nerve stimulation guidance. Bupivacaine was used on one pelvic limb (Bup treatment), and bupivacaine with TRH was used on the contralateral limb (Bup-TRH treatment). The nerve block was considered successful upon the absence of responses to pinching the digital pads and mid-tibial skin of both pelvic limbs with mosquito forceps; the pinch, proprioception, and locomotion tests were performed before (baseline) and at each hour after the nerve block until sensory and motor functions returned to baseline. The effect of TRH on nerve blocks was analyzed using a linear mixed model. RESULTS The duration of the sensory nerve block at the digital pads and mid-tibial skin was longer with Bup-TRH (8.0 ± 1.6 h and 10.9 ± 1.6 h, respectively) than with Bup treatment (3.7 ± 2.0 h and 8.0 ± 1.6 h, respectively). Motor block times of proprioception and locomotion were longer with Bup-TRH (9.3 ± 1.6 and 12.7 ± 1.5 h, respectively) than with Bup treatment (4.6 ± 1.9 and 9.6 ± 1.5 h, respectively). No complications were observed. CLINICAL SIGNIFICANCE TRH extended the duration of regional anesthesia of the pelvic limb using bupivacaine.
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Affiliation(s)
- Jiyoung Kim
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Dalhae Kim
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Donghwi Shin
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Taehoon Sung
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Suehyung Rhee
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Minha Kim
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Changhun Nam
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Inhyung Lee
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
| | - Won‐Gyun Son
- Department of Veterinary Clinical SciencesCollege of Veterinary MedicineSeoul National UniversitySeoulRepublic of Korea
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Choi BM, Hwang CS, Yoon YS, Park IJ, Yoo MW, Kim BS. Novel temperature-responsive hydrogel injected to the incision site for postoperative pain relief in laparoscopic abdominal surgery: a single-blind, randomized, pivotal clinical trial. Surg Endosc 2022; 36:5794-5802. [PMID: 35556170 DOI: 10.1007/s00464-022-09252-4] [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: 05/30/2021] [Accepted: 04/08/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND A temperature-responsive hydrogel (PF-72; TGel Bio, Inc., Ltd, Seoul, Korea), developed as a sustained drug delivery device, can be mixed with ropivacaine to reduce pain in the incision area. The hydrogel is soluble at low temperatures (2-8 °C) and is converted into a gel at high temperatures (> 30 °C). We aimed to evaluate whether the administration of ropivacaine using PF-72 at incision sites reduces pain until 72 h postoperatively in patients undergoing laparoscopic stomach or colorectal surgery. METHODS Patients were randomly assigned to the control group (0.75% ropivacaine) or PF-72 group (PF-72 mixed with 0.75% ropivacaine). Before surgical incision closure, 0.75% ropivacaine or PF-72 mixed with 0.75% ropivacaine was injected into the subcutaneous fat and muscle of all incisions. Postoperative pain was evaluated by the Numerical Rating Scale (NRS, 0 = no pain, 10 = most severe pain) for wound pain at 3, 6, 24, 48, and 72 h after the end of surgery. RESULTS Ninety-nine patients (control, n = 51; PF-72, n = 48) were included in the analysis. The areas under the curve of NRS for wound pain until 72 h in the control group and the PF-72 group were 188.7 ± 46.1 and 135.3 ± 49.9 h, respectively (P < 0.001). The frequency of the administration of rescue analgesics in the general ward was similar between the two groups. CONCLUSION PF-72 mixed with 0.75% ropivacaine reduced postoperative pain until 72 h in patients undergoing laparoscopic surgery. Although the study population was not large enough for safety evaluation, no adverse events associated with PF-72 were observed.
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Affiliation(s)
- Byung-Moon Choi
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | | | - Yong Sik Yoon
- Division of colon and rectal surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - In Ja Park
- Division of colon and rectal surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Moon-Won Yoo
- Division of gastrointestinal surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, South Korea
| | - Beom Su Kim
- Division of gastrointestinal surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, South Korea.
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Bang JY, Nam S, Hwang CS, Lee EK, Choi BM. Population pharmacokinetic analysis of ropivacaine extended-release from a temperature-responsive hydrogel in rats. Clin Exp Pharmacol Physiol 2021; 48:932-937. [PMID: 33686702 DOI: 10.1111/1440-1681.13492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 10/13/2020] [Accepted: 03/06/2021] [Indexed: 11/30/2022]
Abstract
Therapeutic agents with a short half-life need to be administered frequently to achieve sustained and effective concentrations. This could be accomplished using sustained drug delivery technology. PF-72 (TGel Bio, Inc., Seoul, Korea) is a drug delivery system based on a powder obtained from lyophilisation of a reverse thermal hydrogel, which could assist in achieving prolonged pain relief if mixed with an anaesthetic and injected into the incision site following surgery. The pharmacokinetic parameters related to the absorption of the local anaesthetic ropivacaine delivered using this hydrogel were quantified. Ten rats were divided into two groups (n = 5 each), and equal doses (4 mg/kg) of different formulations were subcutaneously injected into the abdomen. The experimental group received PF-72 mixed with 0.75% ropivacaine, and the control group received 0.75% ropivacaine. Blood was collected at specific times to measure the plasma concentration of ropivacaine. Population pharmacokinetic analysis was performed using NONMEM VII level 4 (ICON Development Solutions, Dublin, Ireland). The one-compartment absorption model, which combines zero-order absorption and first-order absorption, was used to describe the change in ropivacaine plasma concentration over time. The type of formulation was a significant covariate for zero-order absorption duration (experimental group, 92.9 min; control group, 60.5 min). The addition of PF-72 to 0.75% ropivacaine increased the duration of absorption into the blood, suggesting a longer lasting effect of the analgesic injected into the surgical wound.
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Affiliation(s)
- Ji-Yeon Bang
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sugeun Nam
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | - Eun-Kyung Lee
- Department of Statistics, Ewha Womans University, Seoul, Korea
| | - Byung-Moon Choi
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Zarrintaj P, Ramsey JD, Samadi A, Atoufi Z, Yazdi MK, Ganjali MR, Amirabad LM, Zangene E, Farokhi M, Formela K, Saeb MR, Mozafari M, Thomas S. Poloxamer: A versatile tri-block copolymer for biomedical applications. Acta Biomater 2020; 110:37-67. [PMID: 32417265 DOI: 10.1016/j.actbio.2020.04.028] [Citation(s) in RCA: 158] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 11/16/2022]
Abstract
Poloxamers, also called Pluronic, belong to a unique class of synthetic tri-block copolymers containing central hydrophobic chains of poly(propylene oxide) sandwiched between two hydrophilic chains of poly(ethylene oxide). Some chemical characteristics of poloxamers such as temperature-dependent self-assembly and thermo-reversible behavior along with biocompatibility and physiochemical properties make poloxamer-based biomaterials promising candidates for biomedical application such as tissue engineering and drug delivery. The microstructure, bioactivity, and mechanical properties of poloxamers can be tailored to mimic the behavior of various types of tissues. Moreover, their amphiphilic nature and the potential to self-assemble into the micelles make them promising drug carriers with the ability to improve the drug availability to make cancer cells more vulnerable to drugs. Poloxamers are also used for the modification of hydrophobic tissue-engineered constructs. This article collects the recent advances in design and application of poloxamer-based biomaterials in tissue engineering, drug/gene delivery, theranostic devices, and bioinks for 3D printing. STATEMENT OF SIGNIFICANCE: Poloxamers, also called Pluronic, belong to a unique class of synthetic tri-block copolymers containing central hydrophobic chains of poly(propylene oxide) sandwiched between two hydrophilic chains of poly(ethylene oxide). The microstructure, bioactivity, and mechanical properties of poloxamers can be tailored to mimic the behavior of various types of tissues. Moreover, their amphiphilic nature and the potential to self-assemble into the micelles make them promising drug carriers with the ability to improve the drug availability to make cancer cells more vulnerable to drugs. However, no reports have systematically reviewed the critical role of poloxamer for biomedical applications. Research on poloxamers is growing today opening new scenarios that expand the potential of these biomaterials from "traditional" treatments to a new era of tissue engineering. To the best of our knowledge, this is the first review article in which such issue is systematically reviewed and critically discussed in the light of the existing literature.
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Affiliation(s)
- Payam Zarrintaj
- Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States
| | - Joshua D Ramsey
- Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States
| | - Ali Samadi
- Polymer Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran
| | - Zhaleh Atoufi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Mohsen Khodadadi Yazdi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology & Metabolism Molecular-Cellular Sciences, University of Tehran, Tehran, Iran
| | | | - Ehsan Zangene
- Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Mehdi Farokhi
- National Cell Bank of Iran, Pasteur Institute of Iran, P.O. Box 1316943551, Tehran, Iran
| | - Krzysztof Formela
- Department of Polymer Technology, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Mohammad Reza Saeb
- Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran.
| | - Masoud Mozafari
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Sabu Thomas
- School of Chemical Sciences, M G University, Kottayam 686560, Kerala, India
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Chain conformation: A key parameter driving clustering or dispersion in polyelectrolyte – Colloid systems. J Colloid Interface Sci 2020; 561:426-438. [DOI: 10.1016/j.jcis.2019.11.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 10/24/2019] [Accepted: 11/02/2019] [Indexed: 11/19/2022]
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Coleman MC, Goetz JE, Brouillette MJ, Seol D, Willey MC, Petersen EB, Anderson HD, Hendrickson NR, Compton J, Khorsand B, Morris AS, Salem AK, Fredericks DC, McKinley TO, Martin JA. Targeting mitochondrial responses to intra-articular fracture to prevent posttraumatic osteoarthritis. Sci Transl Med 2019; 10:10/427/eaan5372. [PMID: 29437147 DOI: 10.1126/scitranslmed.aan5372] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 09/19/2017] [Accepted: 01/05/2018] [Indexed: 12/16/2022]
Abstract
We tested whether inhibiting mechanically responsive articular chondrocyte mitochondria after severe traumatic injury and preventing oxidative damage represent a viable paradigm for posttraumatic osteoarthritis (PTOA) prevention. We used a porcine hock intra-articular fracture (IAF) model well suited to human-like surgical techniques and with excellent anatomic similarities to human ankles. After IAF, amobarbital or N-acetylcysteine (NAC) was injected to inhibit chondrocyte electron transport or downstream oxidative stress, respectively. Effects were confirmed via spectrophotometric enzyme assays or glutathione/glutathione disulfide assays and immunohistochemical measures of oxidative stress. Amobarbital or NAC delivered after IAF provided substantial protection against PTOA at 6 months, including maintenance of proteoglycan content, decreased histological disease scores, and normalized chondrocyte metabolic function. These data support the therapeutic potential of targeting chondrocyte metabolism after injury and suggest a strong role for mitochondria in mediating PTOA.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Todd O McKinley
- Indiana University Health Methodist Hospital Orthopaedic Trauma Service, Indianapolis, IN 46202, USA
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Oh KS, Hwang C, Lee HY, Song JS, Park HJ, Lee CK, Song I, Lim TH. Preclinical studies of ropivacaine extended-release from a temperature responsive hydrogel for prolonged relief of pain at the surgical wound. Int J Pharm 2019; 558:225-230. [PMID: 30654057 DOI: 10.1016/j.ijpharm.2019.01.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/09/2018] [Accepted: 01/04/2019] [Indexed: 11/25/2022]
Abstract
Postoperative pain is a common form of acute pain that has been treated commonly by local anesthetics through regional nerve blocking. In this study, a series of experiments were conducted using rats to investigate the pharmacokinetic, distribution, and efficacy of a temperature responsive hydrogel-based drug delivery device (PF-72) containing ropivacaine (0.75%) for extended relief of postoperative pain by allowing the prolonged release of ropivacaine. When the ropivacaine was administered using PF-72, its concentration-time curve (AUClast) and peak concentration (Cmax) were 577.0 h*ng/mL and 271.9 ng/mL, respectively. In contrast when the ropivacaine solution was administered using saline solution, its AUClast and Cmax were 982.8 h*ng/mL and 423.6 ng/mL, respectively. In the tissue distribution study, the peak concentration and mean area under the curve of the ropivacaine in injection area (target tissue) were found about 2-fold higher in the case of PF-72 compared with the case of conventional ropivacaine solution. These results clearly demonstrate the capability of PF-72 hydrogel to retain the ropivacaine at the injection site for an extended period. Effective extended (at least 24 h) pain relief of ropivacaine administered using PF-72 was found in the pharmacodynamic study of prolonged analgesic effect. The results of this study indicated that local drug delivery by PF-72 hydrogel formulation may be an effective method to achieve extended relief of pain. Other advantages of ropivacaine administration using PF-72 include reduced systemic side effects and high localization of a drug in target tissues.
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Affiliation(s)
| | | | - Ha-Yeon Lee
- Korea Research Institute of Chemical Technology (KRICT), Daejeon City, Republic of Korea
| | - Jin Sook Song
- Korea Research Institute of Chemical Technology (KRICT), Daejeon City, Republic of Korea
| | - Hyun-Ji Park
- Efficacy Evaluation Center, Chemon, Inc, Gyeonggi-do, Republic of Korea
| | - Chul-Kyu Lee
- Efficacy Evaluation Center, Chemon, Inc, Gyeonggi-do, Republic of Korea
| | - InO Song
- Department of Biomedical Engineering, University of Iowa, Iowa City, IA USA
| | - Tae-Hong Lim
- Department of Biomedical Engineering, University of Iowa, Iowa City, IA USA.
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Biomaterial-guided delivery of gene vectors for targeted articular cartilage repair. Nat Rev Rheumatol 2018; 15:18-29. [DOI: 10.1038/s41584-018-0125-2] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Cereda CMS, Mecatti DS, Papini JZB, Bueno DV, Franz-Montan M, Rocha T, Pedrazzoli Júnior J, de Paula E, de Araújo DR, Grillo R, Fraceto LF, Calafatti SA, Tofoli GR. Bupivacaine in alginate and chitosan nanoparticles: an in vivo evaluation of efficacy, pharmacokinetics, and local toxicity. J Pain Res 2018; 11:683-691. [PMID: 29670395 PMCID: PMC5896646 DOI: 10.2147/jpr.s158695] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Objective This study reports a preclinical evaluation of an alginate/chitosan nanoparticle formulation containing NovaBupi®, a racemic bupivacaine (BVC) containing 25% dextrobupivacaine and 75% levobupivacaine. Methods New Zealand White rabbits (n=6) received intraoral or intrathecal injections of BVC 0.5% or BVC 0.5%-loaded alginate–chitosan nanoparticles (BVCALG). BVC plasma levels and pharmacokinetic parameters were determined in blood samples of these rabbits. An infraorbital nerve blockade was performed in male Wistar rats (n=7) with the same formulations and the vehicle (NPALG). Histological evaluation of local toxicity after 6 hours and 24 hours of the treatments was performed in rats’ (n=6) oral tissues. Results No statistically significant difference was observed between plasma concentrations and pharmacokinetic parameters (p>0.05) after intraoral injections. However, after intrathecal injection BVCALG changed approximately three times the values of volume of distribution and area under the curve (AUC0–t; p<0.05). The total analgesic effect of BVC after infraorbital nerve blockade was improved by 1.4-fold (p<0.001) with BVCALG. BVC and BVCALG did not induce significant local inflammatory reaction. Conclusion The encapsulation of BVC prolongs the local anesthetic effect after infraorbital nerve blockade and altered the pharmacokinetics after intrathecal injection.
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Affiliation(s)
| | | | | | | | - Michelle Franz-Montan
- Department of Physiological Sciences, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Thalita Rocha
- UNIFAG, São Francisco University, Bragança Paulista, São Paulo, Brazil
| | | | - Eneida de Paula
- Department of Biochemistry and Tissue Biology, University of Campinas, Campinas, São Paulo, Brazil
| | | | - Renato Grillo
- Department of Physics and Chemistry, School of Engineering, São Paulo State University (UNESP), Ilha Solteira, São Paulo, Brazil
| | - Leonardo Fernandes Fraceto
- Department of Environmental Engineering, São Paulo State University (UNESP), Sorocaba, São Paulo, Brazil
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Lee T, Lim TH, Lee SH, Kim JH, Hong J. Biomechanical function of a balloon nucleus pulposus replacement system: A human cadaveric spine study. J Orthop Res 2018; 36:167-173. [PMID: 28513885 DOI: 10.1002/jor.23607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 05/08/2017] [Indexed: 02/04/2023]
Abstract
With recent advances in motion-sparing techniques in spine surgery, disc nucleus replacement (DNR) has been introduced as a viable method to restore the biomechanical functions of the spine. Several methods of DNR have been proposed in the literature. However, the risk of device migration or extrusion is a major issue that should be addressed for a successful DNR. DNR using a balloon nucleus (BN) filled with pressurized fluid may be capable of reducing such risks while preserving the advantages of DNR. The objective of this study was to investigate the biomechanical functionalities of the human cadaveric lumbar motion segments with a custom made BN filled with saline at internal fluid pressure of 0.3 or 0.6 MPa in terms of axial and rotational flexibilities of the L4-L5 motion segment. Axial flexibility was quantified by the axial displacement resulting from an axial compressive force of 400 N while the rotational flexibility by the range of motions determined as the rotational angles in response to a pure moment of 6.0 Nm in flexion, extension, and right- and left-lateral bending directions. These tests were performed successively on the motion segment in the following conditions: intact, post nucleotomy, implanting BN with 0.3 MPa, and BN with 0.6 MPa. The nucleotomy was found to significantly increase both the axial and rotational flexibilities while the implantation of the BN reduced the axial and rotational flexibilities to those of the intact segment. The axial and rotational flexibilities of the segment with the BN with 0.3 MPa were greater than those of the segment with the BN with 0.6 MPa. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:167-173, 2018.
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Affiliation(s)
- Taekyeong Lee
- Department of Control and Instrumentation Engineering, Korea University, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea
| | - Tae-Hong Lim
- Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa
| | - Sang-Heon Lee
- Department of Physical Medicine and Rehabilitation, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Joo-Han Kim
- Department of Neurosurgery, Guro Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Junghwa Hong
- Department of Control and Instrumentation Engineering, Korea University, 2511 Sejong-ro, Sejong City, 30019, Republic of Korea.,Department of Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
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Sánchez-Téllez DA, Téllez-Jurado L, Rodríguez-Lorenzo LM. Hydrogels for Cartilage Regeneration, from Polysaccharides to Hybrids. Polymers (Basel) 2017; 9:E671. [PMID: 30965974 PMCID: PMC6418920 DOI: 10.3390/polym9120671] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 11/24/2017] [Accepted: 11/29/2017] [Indexed: 12/12/2022] Open
Abstract
The aims of this paper are: (1) to review the current state of the art in the field of cartilage substitution and regeneration; (2) to examine the patented biomaterials being used in preclinical and clinical stages; (3) to explore the potential of polymeric hydrogels for these applications and the reasons that hinder their clinical success. The studies about hydrogels used as potential biomaterials selected for this review are divided into the two major trends in tissue engineering: (1) the use of cell-free biomaterials; and (2) the use of cell seeded biomaterials. Preparation techniques and resulting hydrogel properties are also reviewed. More recent proposals, based on the combination of different polymers and the hybridization process to improve the properties of these materials, are also reviewed. The combination of elements such as scaffolds (cellular solids), matrices (hydrogel-based), growth factors and mechanical stimuli is needed to optimize properties of the required materials in order to facilitate tissue formation, cartilage regeneration and final clinical application. Polymer combinations and hybrids are the most promising materials for this application. Hybrid scaffolds may maximize cell growth and local tissue integration by forming cartilage-like tissue with biomimetic features.
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Affiliation(s)
- Daniela Anahí Sánchez-Téllez
- Instituto Politécnico Nacional-ESIQIE, Depto. Ing. en Metalurgia y Materiales, UPALM-Zacatenco, Mexico City 07738, Mexico.
- Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, Centro de Investigación Biomédica en Red-Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Av. Monforte de Lemos 3-5, Pabellón 11, Planta 0, 28029 Madrid, Spain.
| | - Lucía Téllez-Jurado
- Instituto Politécnico Nacional-ESIQIE, Depto. Ing. en Metalurgia y Materiales, UPALM-Zacatenco, Mexico City 07738, Mexico.
| | - Luís María Rodríguez-Lorenzo
- Networking Biomedical Research Centre in Bioengineering, Biomaterials and Nanomedicine, Centro de Investigación Biomédica en Red-Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Av. Monforte de Lemos 3-5, Pabellón 11, Planta 0, 28029 Madrid, Spain.
- Department Polymeric Nanomaterials and Biomaterials, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain.
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King CH, Beutler SS, Kaye AD, Urman RD. Pharmacologic Properties of Novel Local Anesthetic Agents in Anesthesia Practice. Anesthesiol Clin 2017; 35:315-325. [PMID: 28526152 DOI: 10.1016/j.anclin.2017.01.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Therapeutic duration of traditional local anesthetics when used in peripheral nerve blocks is normally limited. This article describes novel approaches to extend the duration of peripheral nerve blocks currently available or in development. Three newer approaches on extending the duration of peripheral nerve blocks include site-1 sodium channel blockers, novel local anesthetics delivery systems, and novel adjuvants of local anesthetics. Compared with plain amide-based and ester-based local anesthetics, alternative approaches show significant promise in decreasing postoperative pain, rescue opioid requirement, hospital length-of-stay, and overall health care cost, without compromising the established safety profile of traditional local anesthetics.
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Affiliation(s)
- Chih H King
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
| | - Sascha S Beutler
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
| | - Alan D Kaye
- Department of Anesthesiology and Pain Medicine, Louisiana State University School of Medicine, LSU Health Science Center, 1542 Tulane Avenue, Room 659, New Orleans, LA 70112, USA
| | - Richard D Urman
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA.
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14
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Oh SH, Kang JG, Lee JH. Co-micellized Pluronic mixture with thermo-sensitivity and residence stability as an injectable tissue adhesion barrier hydrogel. J Biomed Mater Res B Appl Biomater 2016; 106:172-182. [DOI: 10.1002/jbm.b.33824] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 10/20/2016] [Accepted: 11/16/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Se Heang Oh
- Department of Nanobiomedical Science; Dankook University; Cheonan 31116 Republic of Korea
| | - Jun Goo Kang
- Department of Advanced Materials; Hannam University; Daejeon 34054 Republic of Korea
| | - Jin Ho Lee
- Department of Advanced Materials; Hannam University; Daejeon 34054 Republic of Korea
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15
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Akkari AC, Papini JZB, Garcia GK, Franco MKD, Cavalcanti LP, Gasperini A, Alkschbirs MI, Yokaichyia F, de Paula E, Tófoli GR, de Araujo DR. Poloxamer 407/188 binary thermosensitive hydrogels as delivery systems for infiltrative local anesthesia: Physico-chemical characterization and pharmacological evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:299-307. [DOI: 10.1016/j.msec.2016.05.088] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 04/06/2016] [Accepted: 05/20/2016] [Indexed: 11/28/2022]
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16
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Nöchel U, Behl M, Balk M, Lendlein A. Thermally-Induced Triple-Shape Hydrogels: Soft Materials Enabling Complex Movements. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28068-28076. [PMID: 27673368 DOI: 10.1021/acsami.6b09581] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Shape-memory hydrogels enable directed movements of a specimen in response to temperature, whereby crystallizable switching segments incorporated as side chains resulted in constant degrees of swelling during the shape-memory cycle. Here we report about hydrogels exhibiting a thermally induced triple-shape effect that allows complex movements of soft materials with two almost independent shape changes. Potential applications for those soft triple-shape materials are two-step self-unfolding devices or temperature-sensitive hydrogel actuators, for example, smart valves for flow rate control in aqueous media. Series of hydrogels with two different hydrophobic crystallizable switching segments were prepared. The degrees of swelling of the triple-shape hydrogels were not affected for different shapes or temperatures, which avoided in this way interferences on the shape shifts. During the two-step programming procedure, two distinct shapes can be implemented as reflected by shape fixity ratios of generally >50%. Structural analysis of the switching domains during the triple-shape cycle by means of X-ray scattering indicates that longer side chains gain lower orientation after deformation and that shorter side chains orient perpendicular to the hydrophilic main chain. Furthermore, it is observed that increased orientation of the switching domains is not a key requirement for adequate shape fixity and recovery ratios of the triple-shape effect in hydrogels, thus longer side chains can be utilized as switching segments in other shape-memory hydrogels.
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Affiliation(s)
- Ulrich Nöchel
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT) and ‡Joint Laboratory for Biomaterials and Regenerative Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55, 14513 Teltow, Germany
| | - Marc Behl
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT) and ‡Joint Laboratory for Biomaterials and Regenerative Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55, 14513 Teltow, Germany
| | - Maria Balk
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT) and ‡Joint Laboratory for Biomaterials and Regenerative Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55, 14513 Teltow, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT) and ‡Joint Laboratory for Biomaterials and Regenerative Medicine, Helmholtz-Zentrum Geesthacht , Kantstr. 55, 14513 Teltow, Germany
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17
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Analgesic Effect of Intra-Articular Injection of Temperature-Responsive Hydrogel Containing Bupivacaine on Osteoarthritic Pain in Rats. BIOMED RESEARCH INTERNATIONAL 2015; 2015:812949. [PMID: 26881207 PMCID: PMC4735994 DOI: 10.1155/2015/812949] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 10/30/2015] [Accepted: 12/13/2015] [Indexed: 12/04/2022]
Abstract
The present study examined the analgesic effects of slow-releasing bupivacaine from hydrogel on chronic arthritic pain in rats. Osteoarthritis (OA) was induced by monosodium iodoacetate (MIA) injection into the right knee joint. Hydrogel (HG: 20, 30, and 50 μL) and temperature-sensitive hydrogel containing bupivacaine (T-gel: 20, 30, and 50 μL) were injected intra-articularly 14 days after MIA injection. Behavioral tests were conducted. The rats showed a significant decrease in weight load and paw withdrawal threshold (PWT). Intra-articular 0.5% bupivacaine (10 and 20 μL) significantly reversed MIA-induced decreased PWT, with no effect on weight load. In normal rats, hydrogel did not produce significant changes in PWT but at 30 and 50 μL slightly decreased weight bearing; T-gel did not cause any changes in both the weight load and PWT. In OA rats, T-gel at 20 μL had a significant analgesic effect for 2 days, even though T-gel at 50 μL further reduced the weight load, demonstrating that intra-articular T-gel (20 μL) has long-lasting analgesic effects in OA rats. Thus, T-gel designed to deliver analgesics into the joint cavity could be an effective therapeutic tool in the clinical setting.
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18
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Boateng J, Catanzano O. Advanced Therapeutic Dressings for Effective Wound Healing--A Review. J Pharm Sci 2015; 104:3653-3680. [PMID: 26308473 DOI: 10.1002/jps.24610] [Citation(s) in RCA: 484] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 12/15/2022]
Abstract
Advanced therapeutic dressings that take active part in wound healing to achieve rapid and complete healing of chronic wounds is of current research interest. There is a desire for novel strategies to achieve expeditious wound healing because of the enormous financial burden worldwide. This paper reviews the current state of wound healing and wound management products, with emphasis on the demand for more advanced forms of wound therapy and some of the current challenges and driving forces behind this demand. The paper reviews information mainly from peer-reviewed literature and other publicly available sources such as the US FDA. A major focus is the treatment of chronic wounds including amputations, diabetic and leg ulcers, pressure sores, and surgical and traumatic wounds (e.g., accidents and burns) where patient immunity is low and the risk of infections and complications are high. The main dressings include medicated moist dressings, tissue-engineered substitutes, biomaterials-based biological dressings, biological and naturally derived dressings, medicated sutures, and various combinations of the above classes. Finally, the review briefly discusses possible prospects of advanced wound healing including some of the emerging physical approaches such as hyperbaric oxygen, negative pressure wound therapy and laser wound healing, in routine clinical care.
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Affiliation(s)
- Joshua Boateng
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK.
| | - Ovidio Catanzano
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK
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Abstract
Acute and chronic pain control is a significant clinical challenge that has been largely unmet. Local anesthetics are widely used for the control of post-operative pain and in the therapy of acute and chronic pain. While a variety of approaches are currently used to prolong the duration of action of local anesthetics, an optimal strategy to achieve neural blockage for several hours to days with minimal toxicity has yet to be identified. Several drug delivery systems such as liposomes, microparticles and nanoparticles have been investigated as local anesthetic delivery vehicles to achieve prolonged anesthesia. Recently, injectable responsive hydrogels raise significant interest for the localized delivery of anesthetic molecules. This paper discusses the potential of injectable hydrogels to prolong the action of local anesthetics.
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Effect of liposomes on rheological and syringeability properties of hyaluronic acid hydrogels intended for local injection of drugs. Int J Pharm 2015; 487:187-96. [PMID: 25882015 DOI: 10.1016/j.ijpharm.2015.04.019] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 04/07/2015] [Accepted: 04/09/2015] [Indexed: 12/11/2022]
Abstract
The aim of this work was to thoroughly study the effect of liposomes on the rheological and the syringeability properties of hyaluronic acid (HA) hydrogels intended for the local administration of drugs by injection. Whatever the characteristics of the liposomes added (neutral, positively or negatively charged, with a corona of polyethylene glycol chains, size), the viscosity and the elasticity of HA gels increased in a lipid concentration-dependent manner. Indeed, liposomes strengthened the network formed by HA chains due to their interactions with this polymer. The nature and the resulting effects of these interactions depended on liposome composition and concentration. The highest viscosity and elasticity were observed with liposomes covered by polyethylene glycol chains while neutral liposomes displayed the lowest effect. Despite their high viscosity at rest, all the formulations remained easily injectable through needles commonly used for local injections thanks to the shear-thinning behavior of HA gels. The present study demonstrates that rheological and syringeability tests are both necessary to elucidate the behavior of such systems during and post injection. In conclusion, HA liposomal gels appear to be a promising and versatile formulation platform for a wide range of applications in local drug delivery when an injection is required.
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Kim Y, Seol DR, Mohapatra S, Sunderland JJ, Schultz MK, Domann FE, Lim TH. Locally targeted delivery of a micron-size radiation therapy source using temperature-sensitive hydrogel. Int J Radiat Oncol Biol Phys 2014; 88:1142-7. [PMID: 24495593 DOI: 10.1016/j.ijrobp.2013.12.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 12/12/2013] [Accepted: 12/14/2013] [Indexed: 11/16/2022]
Abstract
PURPOSE To propose a novel radiation therapy (RT) delivery modality: locally targeted delivery of micron-size RT sources by using temperature-sensitive hydrogel (RT-GEL) as an injectable vehicle. METHODS AND MATERIALS Hydrogel is a water-like liquid at room temperature but gels at body temperature. Two US Food and Drug Administration-approved polymers were synthesized. Indium-111 (In-111) was used as the radioactive RT-GEL source. The release characteristics of In-111 from polymerized RT-GEL were evaluated. The injectability and efficacy of RT-GEL delivery to human breast tumor were tested using animal models with control datasets of RT-saline injection. As proof-of-concept studies, a total of 6 nude mice were tested by injecting 4 million tumor cells into their upper backs after a week of acclimatization. Three mice were injected with RT-GEL and 3 with RT-saline. Single-photon emission computed tomography (SPECT) and CT scans were performed on each mouse at 0, 24, and 48 h after injection. The efficacy of RT-GEL was determined by comparison with that of the control datasets by measuring kidney In-111 accumulation (mean nCi/cc), representing the distant diffusion of In-111. RESULTS RT-GEL was successfully injected into the tumor by using a 30-gauge needle. No difficulties due to polymerization of hydrogel during injection and intratumoral pressure were observed during RT-GEL injection. No back flow occurred for either RT-GEL or RT-saline. The residual tumor activities of In-111 were 49% at 24 h (44% at 48 h, respectively) for RT-GEL and 29% (22%, respectively) for RT-saline. Fused SPECT-CT images of RT-saline showed considerable kidney accumulation of In-111 (2886%, 261%, and 262% of RT-GEL at 0, 24, and 48 h, respectively). CONCLUSIONS RT-GEL was successfully injected and showed much higher residual tumor activity: 170% (200%, respectively), than that of RT-saline at 24 h (48 h, respectively) after injection with a minimal accumulation of In-111 to the kidneys. Preliminary data of RT-GEL as a delivery modality of a radiation source to a local tumor are promising.
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Affiliation(s)
- Yusung Kim
- Department of Radiation Oncology, The University of Iowa, Iowa City, Iowa.
| | - Dong Rim Seol
- Department of Orthopaedic Surgery, The University of Iowa, Iowa City, Iowa
| | - Sucheta Mohapatra
- Department of Biomedical Engineering, The University of Iowa, Iowa City, Iowa
| | | | - Michael K Schultz
- Department of Radiation Oncology, The University of Iowa, Iowa City, Iowa; Department of Radiology, The University of Iowa, Iowa City, Iowa
| | - Frederick E Domann
- Department of Radiation Oncology, The University of Iowa, Iowa City, Iowa; Department of Surgery, The University of Iowa, Iowa City, Iowa
| | - Tae-Hong Lim
- Department of Biomedical Engineering, The University of Iowa, Iowa City, Iowa
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