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Chen Y, Xu J, Li P, Shi L, Zhang S, Guo Q, Yang Y. Advances in the use of local anesthetic extended-release systems in pain management. Drug Deliv 2024; 31:2296349. [PMID: 38130151 PMCID: PMC10763865 DOI: 10.1080/10717544.2023.2296349] [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: 07/13/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023] Open
Abstract
Pain management remains among the most common and largely unmet clinical problems today. Local anesthetics play an indispensable role in pain management. The main limitation of traditional local anesthetics is the limited duration of a single injection. To address this problem, catheters are often placed or combined with other drugs in clinical practice to increase the time that local anesthetics act. However, this method does not meet the needs of clinical analgesics. Therefore, many researchers have worked to develop local anesthetic extended-release types that can be administered in a single dose. In recent years, drug extended-release systems have emerged dramatically due to their long duration and efficacy, providing more possibilities for the application of local anesthetics. This paper summarizes the types of local anesthetic drug delivery systems and their clinical applications, discusses them in the context of relevant studies on local anesthetics, and provides a summary and outlook on the development of local anesthetic extended-release agents.
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Affiliation(s)
- Yulu Chen
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, China
| | - Jingmei Xu
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, China
| | - Ping Li
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Department of Obstetrics, Xiangya Hospital, Central South University, Changsha, China
| | - Liyang Shi
- College of Biology, Hunan University, Changsha, China
| | - Sha Zhang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, China
| | - Qulian Guo
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yong Yang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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Oda Y. Development of long-acting local anesthetics: a long way from basic research to clinical application. J Anesth 2024:10.1007/s00540-024-03387-5. [PMID: 39120639 DOI: 10.1007/s00540-024-03387-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Accepted: 08/01/2024] [Indexed: 08/10/2024]
Affiliation(s)
- Yutaka Oda
- Department of Anesthesiology, Osaka City Juso Hospital, 2-12-27, Nonaka-kita, Yodogawa-ku, Osaka, 532-0034, Japan.
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Overstreet DJ, Zdrale G, McLaren AC. Extended Release of Bupivacaine from Temperature-Responsive PNDJ Hydrogels Improves Postoperative Weight-Bearing in Rabbits Following Knee Surgery. Pharmaceuticals (Basel) 2024; 17:879. [PMID: 39065729 PMCID: PMC11280370 DOI: 10.3390/ph17070879] [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: 05/16/2024] [Revised: 06/21/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024] Open
Abstract
Effective treatment of postoperative pain lasting for multiple days without opioids is an important clinical need. We previously reported analgesia lasting up to 96 h in a porcine soft tissue model of postoperative pain using SBG004, an extended-release formulation of bupivacaine based on the temperature-responsive polymer poly(N-isopropylacrylamide-co-dimethylbutyrolactone acrylamide-co-Jeffamine M-1000 acrylamide) [PNDJ]. Orthopaedic surgical sites such as the knee can involve complex sensory innervation which presents a distinct challenge to local anesthetic delivery. The purpose of this work was to evaluate the pharmacokinetics and efficacy of SBG004 in an orthopaedic surgical model in comparison to currently available local anesthetics. Pharmacokinetics following periarticular (PA) or intraarticular (IA) injection of SBG004 were compared against liposomal bupivacaine (Lip-Bupi) PA in New Zealand White rabbits (all doses 14.5 mg/kg). Analgesic efficacy of SBG004 (IA, PA, or IA + PA), three active comparators, and saline was evaluated following knee surgery in New Zealand White rabbits. Analgesia was assessed via weight-bearing on the operated limb during spontaneous large steps in video recordings. Systemic bupivacaine exposure lasted at least 7 days for SBG004 PA, 4 days for SBG004 IA, and 2 days for Lip-Bupi PA. In the analgesia study, weight-bearing in all active groups except SBG004 IA was more frequent versus saline through 8 h postoperatively (p < 0.05). Only SBG004 IA + PA resulted in a higher proportion of weight-bearing rabbits at 24 h versus saline (6/7 versus 2/10, p = 0.015). Analysis of pooled data from 24-72 h showed significantly greater frequency of weight-bearing in rabbits receiving SBG004 IA + PA (71%) versus saline (37%), ropivacaine cocktail (41%), and Lip-Bupi PA (36%). The results indicate that the release profile from SBG004 PA or IA coincides reasonably with the time course of postoperative pain, and SBG004 may produce longer duration of analgesia than local anesthetics currently used in knee surgery, including during the period of 24-72 h recognized as a target for extended-release local anesthetics.
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Affiliation(s)
- Derek J. Overstreet
- School of Biological & Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
- Sonoran Biosciences, Tempe, AZ 85284, USA
| | | | - Alex C. McLaren
- School of Biological & Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
- Sonoran Biosciences, Tempe, AZ 85284, USA
- Department of Orthopaedic Surgery, University of Arizona College of Medicine, Phoenix, AZ 85004, USA
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Ni Y, Gao H, Ouyang W, Yang G, Cheng M, Ding L. Pharmacokinetics, metabolite profiling, safety and tolerability of YZJ-4729 tartrate, a novel G protein-biased μ-opioid receptor agonist, in healthy Chinese subjects. Front Pharmacol 2024; 14:1295319. [PMID: 38264529 PMCID: PMC10803517 DOI: 10.3389/fphar.2023.1295319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 12/26/2023] [Indexed: 01/25/2024] Open
Abstract
Objective: YZJ-4729 is a novel G protein-biased μ-opioid receptor agonist for the treatment of acute pain in adult patients who require intravenous opioid analgesic therapy. The aim of this study was to assess the pharmacokinetics, metabolite profiling, safety and tolerability of YZJ-4729 in healthy Chinese subjects following the single intravenous doses ranged from 0.2 mg to 6 mg. Methods: This single-center, randomized, double-blind, placebo-controlled clinical study was conducted in 54 healthy male and female Chinese subjects after single ascending doses of YZJ-4729 tartrate (0.2, 0.5, 1.5, 3, 4.5, and 6 mg). Subjects in each cohort were assigned randomly to receive a single intravenous dose of YZJ-4729 tartrate injection or placebo at a ratio of 4:1. Pharmacokinetic characteristics, metabolite profiling, safety and tolerability profiles of the study drug were evaluated. Results: Overall, YZJ-4729 was safe and well tolerated in healthy Chinese subjects. The study drug reached peak plasma concentrations nearly at the end of the infusion. After administration, YZJ-4729 was eliminated rapidly with a terminal elimination half-life of 0.862-2.50 h, and excreted little in human excreta. The maximum drug concentration and area under the plasma concentration-time curve increased with dose escalation across the entire dose range. YZJ-4729 experienced extensive metabolism in human body. A total of 19 metabolites were identified and the characteristic metabolic pathways involved hydroxylation, ketone formation, N-dealkylation and glucuronide conjugation. Metabolite M10 was the most abundant circulating metabolite, and represented over 10% of total drug-related systemic exposure. Further PK and safety evaluation of M10 was necessary. Conclusion: The clinical study results laid a foundation for the further clinical studies of YZJ-4729 in patients. Clinical Trial Registration: http://www.chinadrugtrials.org.cn, identifier CTR20222574.
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Affiliation(s)
- Yufeng Ni
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, China
- Yangtze River Pharmaceutical Group Co, Ltd., Taizhou, China
| | - Huaye Gao
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, China
- Nanjing Jiening Pharmaceutical Technology Co, Ltd., Nanjing, China
| | - Wen Ouyang
- Department of Anesthesiology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Guoping Yang
- Clinical Trial Research Center, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Minlu Cheng
- Nanjing Jiening Pharmaceutical Technology Co, Ltd., Nanjing, China
- Nanjing Clinical Tech. Laboratories Inc., Nanjing, China
| | - Li Ding
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, China
- Nanjing Jiening Pharmaceutical Technology Co, Ltd., Nanjing, China
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Annaji M, Mita N, Heard J, Kang X, Poudel I, Boddu SHS, Tiwari AK, Babu RJ. Long-Acting Drug Delivery Technologies for Meloxicam as a Pain Medicine. Crit Rev Ther Drug Carrier Syst 2024; 41:111-150. [PMID: 38608134 DOI: 10.1615/critrevtherdrugcarriersyst.2024048988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
Meloxicam, a selective COX-2 inhibitor, has demonstrated clinical effectiveness in managing inflammation and acute pain. Although available in oral and parenteral formulations such as capsule, tablet, suspension, and solution, frequent administration is necessary to maintain therapeutic efficacy, which can increase adverse effects and patient non-compliance. To address these issues, several sustained drug delivery strategies such as oral, transdermal, transmucosal, injectable, and implantable drug delivery systems have been developed for meloxicam. These sustained drug delivery strategies have the potential to improve the therapeutic efficacy and safety profile of meloxicam, thereby reducing the frequency of dosing and associated gastrointestinal side effects. The choice of drug delivery system will depend on the desired release profile, the target site of inflammation, and the mode of administration. Overall, meloxicam sustained delivery systems offer better patient compliance, and reduce the side effects, thereby improving the clinical applications of this drug. Herein, we discuss in detail different strategies for sustained delivery of meloxicam.
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Affiliation(s)
- Manjusha Annaji
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | | | - Jessica Heard
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Xuejia Kang
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Ishwor Poudel
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Sai H S Boddu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman, UAE; Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, UAE
| | - Amit K Tiwari
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy & Pharmaceutical Sciences, University of Toledo, Toledo, OH 43614, USA
| | - R Jayachandra Babu
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849, USA
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Schubert AK, Wiesmann T, Dinges HC. Measures to prolong duration of sensory block after regional anaesthesia. Curr Opin Anaesthesiol 2023; 36:103-108. [PMID: 36326074 DOI: 10.1097/aco.0000000000001204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE OF REVIEW The duration of single-injection regional anaesthesia is limited due to the inherent pharmacological properties of local anaesthetics. The ideal duration of a regional anaesthesia block lasting for the first 24 h postoperatively can be stated, while a residual analgesic effect thereafter is desirable.The aim of this review is to present current options to prolong the duration of action of single-injection peripheral regional anaesthesia in the ambulatory setting. Secondly, this review outlines and discusses the latest evidence regarding the clinical use of adjuvants and sustained-release local anaesthetics. RECENT FINDINGS Extended-release formulations of local anaesthetics such as liposomal bupivacaine have been developed to prolong regional anaesthesia up to 96 h. Recent studies, however, show that the actual effects remain far behind expectations and that the efficacy is only marginally better than bupivacaine hydrochloride.Adjuvants to local anaesthetics have been studied extensively with heterogenous results. Dexamethasone and alpha-2 agonists range among the most effective measures to prolong single-injection nerve blocks.Continuous nerve blocks and catheter techniques may prolong regional anaesthesia very effectively, but are less cost-effective regarding block procedure, postoperative care and handling logistical issues especially in ambulatory surgery. SUMMARY In conclusion, adjuvants are the recommended measure to prolong regional anaesthesia where needed. With good evidence supporting it, dexamethasone is the most effective adjuvant, followed by dexmedetomidine. Both have few side effects and a favourable safety profile. However, a preferable duration of analgesia lasting for the first 24 h postoperatively is still not reliably achievable.
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Affiliation(s)
- Ann-Kristin Schubert
- University Hospital Marburg, Department of Anesthesia and Intensive Care, University Hospital Marburg, Baldingerstraße, Marburg
| | - Thomas Wiesmann
- University Hospital Marburg, Department of Anesthesia and Intensive Care, University Hospital Marburg, Baldingerstraße, Marburg
- Department of Anesthesiology and Intensive Care Medicine, Diakoneo Diak Klinikum Schwäbisch-Hall, Schwäbisch-Hall, Germany
| | - Hanns-Christian Dinges
- University Hospital Marburg, Department of Anesthesia and Intensive Care, University Hospital Marburg, Baldingerstraße, Marburg
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Heffernan JM, McLaren AC, Glass CM, Overstreet DJ. Extended Release of Bupivacaine from Temperature-responsive Hydrogels Provides Multi-day Analgesia for Postoperative Pain. PAIN MEDICINE 2023; 24:113-121. [PMID: 35944219 DOI: 10.1093/pm/pnac119] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/29/2022] [Accepted: 08/01/2022] [Indexed: 02/06/2023]
Abstract
OBJECTIVE A local anesthetic that provides analgesia lasting at least three days could significantly improve postoperative pain management. This study evaluated the analgesic efficacy and safety of an extended-release formulation of bupivacaine based on the injectable hydrogel carrier poly(N-isopropylacrylamide-co-dimethylbutyrolactone acrylamide-co-Jeffamine M-1000 acrylamide) (PNDJ). METHODS The efficacy of PNDJ containing 4% bupivacaine (SBG004) given by peri-incisional subcutaneous injection (SBG004 SC) or wound filling instillation (SBG004 WF) was evaluated compared to saline, liposomal bupivacaine, bupivacaine collagen sponge, bupivacaine-meloxicam polyorthoester, and bupivacaine HCl in a porcine skin and muscle incision model. Mechanical allodynia was assessed by withdrawal from application of von Frey filaments, and local tolerance was evaluated by histology. Bupivacaine pharmacokinetics for SBG004 SC were measured in rabbits (16.5 mg bupivacaine/kg). RESULTS Animals demonstrated less mechanical allodynia at incisions receiving SBG004 SC for up to 96 hours postoperatively. Incisions treated with SBG004 SC tolerated more force without a withdrawal indicative of pain compared to saline for 96 hours, and compared to SBG004 WF and all active controls at 24, 48, and 72 hours except bupivacaine-meloxicam polyorthoester at 72 hours. By 49 days, SBG004 was histologically absent and was replaced with granulation tissue infiltrated with immune cells in some areas. In rabbits, Cmax was 41.6 ± 9.7 ng/mL with t1/2 82.0 ± 35.8 hours (mean ± SD). CONCLUSIONS Peri-incisional SBG004 SC provided extended release of bupivacaine sufficient to reduce sensation of incisional pain for 96 hours, in vivo bupivacaine delivery for at least 7 days, and a favorable local and systemic toxicity profile.
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Affiliation(s)
| | - Alex C McLaren
- Sonoran Biosciences, Tempe, Arizona, USA.,Department of Orthopaedic Surgery, University of Arizona College of Medicine, Phoenix, Arizona, USA
| | - Christopher M Glass
- School of Biological & Health Systems Engineering, Arizona State University, Tempe, Arizona, USA
| | - Derek J Overstreet
- Sonoran Biosciences, Tempe, Arizona, USA.,School of Biological & Health Systems Engineering, Arizona State University, Tempe, Arizona, USA
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Bourn T, Serpa SM. Bupivacaine/meloxicam ER: A New Dual-acting Extended-Release Local Anesthetic for Opioid-Sparing Postoperative Pain Management. Ann Pharmacother 2023; 57:71-85. [PMID: 35536151 DOI: 10.1177/10600280221086639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To review data for bupivacaine/meloxicam extended-release (ER) solution for management of postoperative pain and opioid-sparing effects. DATA SOURCES Literature search of PubMed (1946 to August 2021) and ProQuest (1946 to August 2021) was performed using the terms: Zynrelef, HTX-011, and "bupivacaine AND meloxicam." Additional information sources include ClinicalTrials.gov, prescribing information, Heron Therapeutics' Clinical and Economic Evidence Dossier, meeting abstracts, and references of identified articles. STUDY SELECTION AND DATA EXTRACTION Clinical trials and articles evaluating bupivacaine/meloxicam ER for postoperative pain management. DATA SYNTHESIS Bupivacaine is a short-acting local anesthetic. Its efficacy is negatively impacted by the acidic environment of surgical sites. Meloxicam, a nonsteroidal antiinflammatory, reduces inflammation at the surgical site and increases pH propagating bupivacaine movement into the neurons. In Phase 2 and Phase 3 clinical trials, bupivacaine/meloxicam ER was compared with bupivacaine HCl, bupivacaine ER, and meloxicam ER with and without scheduled nonopioid multimodal analgesia (MMA) in bunionectomies, herniorrhaphies, total knee arthroplasty and abdominoplasty. Postoperative pain was well controlled for 72 hours and consistently superior to placebo, with minimal or no opioid use. Wound healing was not impacted and adverse effects were similar to placebo (most commonly nausea, dizziness, constipation, and headaches). RELEVANCE TO PATIENT CARE AND CLINICAL PRACTICE Bupivacaine/meloxicam ER is a viable, safe, nonopioid local anesthetic for sustained 72-hour postoperative pain management mitigating opioid consumption. CONCLUSION Bupivacaine/meloxicam ER is the only dual-acting, extended-release local anesthetic available. It provides effective analgesia in the postoperative setting and successfully reduces or eliminates postoperative opioid consumption.
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Affiliation(s)
- Taylor Bourn
- Fred Wilson School of Pharmacy, High Point University, High Point, NC, USA
| | - Sister Michaela Serpa
- Department of Clinical Sciences, Fred Wilson School of Pharmacy, High Point University, High Point, NC, USA
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Kang RS, Jin Z, Gan TJ. A novel long-acting local anesthetic - HTX-011 (ZYNRELEF™) for postoperative pain control. Expert Rev Clin Pharmacol 2022; 15:1147-1153. [PMID: 36199229 DOI: 10.1080/17512433.2022.2132227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Pain following most surgical procedures is expected. However, the treatment and management of postoperative surgical pain has remained challenging. The use of opioid therapy has increasingly become controversial given the limited therapeutic window of these drugs, the adverse side effects, and the potential for abuse. A multimodal approach to the treatment of postoperative pain has been shown to improve pain outcomes after surgery and improve patient satisfaction. Here, we examine a new formulation of bupivacaine and meloxicam extended-release solution HTX-011 (Zenrelef®), and its efficacy in postoperative pain control. AREAS COVERED HTX-011 exists as an extended-release polymer that controls the release of the active ingredients over 72 hours. A systematic approach was taken to review PubMed (Medline) for prospective and retrospective studies related to the use of HTX-011 for the management of postoperative pain. EXPERT OPINION HTX-011 represents a new tool to help modulate postoperative pain. Although multimodal analgesia has been effective in managing postoperative pain, direct surgical infiltration with local anesthetics has had limited efficacy due to their short duration of action. The HTX-011 formulation provides a long-acting local anesthetic at the surgical site which provides a longer period of analgesia while maintaining a favorable safety profile.
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Affiliation(s)
- Ramanjot S Kang
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY 11794-8480
| | - Zhaosheng Jin
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY 11794-8480
| | - Tong J Gan
- Department of Anesthesiology, Stony Brook University Health Science Center, Stony Brook, NY 11794-8480
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Wolfe RC. Zynrelef and the Quest to Eliminate Opioid Prescriptions Following Outpatient Surgery. J Perianesth Nurs 2022; 37:568-570. [PMID: 35786504 DOI: 10.1016/j.jopan.2022.05.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 05/18/2022] [Indexed: 10/17/2022]
Affiliation(s)
- Rachel C Wolfe
- Department of Pharmacy, Barnes-Jewish Hospital, St. Louis, MO.
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Addressing the Needs of the Rapidly Aging Society through the Development of Multifunctional Bioactive Coatings for Orthopedic Applications. Int J Mol Sci 2022; 23:ijms23052786. [PMID: 35269928 PMCID: PMC8911303 DOI: 10.3390/ijms23052786] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 02/27/2022] [Accepted: 02/28/2022] [Indexed: 12/15/2022] Open
Abstract
The unprecedented aging of the world's population will boost the need for orthopedic implants and expose their current limitations to a greater extent due to the medical complexity of elderly patients and longer indwelling times of the implanted materials. Biocompatible metals with multifunctional bioactive coatings promise to provide the means for the controlled and tailorable release of different medications for patient-specific treatment while prolonging the material's lifespan and thus improving the surgical outcome. The objective of this work is to provide a review of several groups of biocompatible materials that might be utilized as constituents for the development of multifunctional bioactive coatings on metal materials with a focus on antimicrobial, pain-relieving, and anticoagulant properties. Moreover, the review presents a summary of medications used in clinical settings, the disadvantages of the commercially available products, and insight into the latest development strategies. For a more successful translation of such research into clinical practice, extensive knowledge of the chemical interactions between the components and a detailed understanding of the properties and mechanisms of biological matter are required. Moreover, the cost-efficiency of the surface treatment should be considered in the development process.
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Nair L, Duggan RP, Moliver CL. The Opioid Epidemic in the Age of the COVID-19 Pandemic. Aesthet Surg J 2022; 42:325-326. [PMID: 34653243 PMCID: PMC8844992 DOI: 10.1093/asj/sjab367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Lakshmi Nair
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Texas Medical Branch, Galveston, TX, USA
| | - Robert P Duggan
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Texas Medical Branch, Galveston, TX, USA
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Yuan S, Chen J, Feng S, Li M, Sun Y, Liu Y. Combination anesthetic therapy: co-delivery of ropivacaine and meloxicam using transcriptional transactivator peptide modified nanostructured lipid carriers in vitro and in vivo. Drug Deliv 2022; 29:263-269. [PMID: 35014916 PMCID: PMC8757603 DOI: 10.1080/10717544.2021.2023695] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Combination therapy combining two drugs in one modified drug delivery system is used to achieve synergistic analgesic effect, and bring effective control of pain management, especially postoperative pain management. In the present study, a combination of drug delivery technologies was utilized. Transcriptional transactivator (TAT) peptide modified, transdermal nanocarriers were designed to co-deliver ropivacaine (RVC) and meloxicam (MLX) and anticipated to achieve longer analgesic effect and lower side effect. TAT modified nanostructured lipid carriers (TAT-NLCs) were used to co-deliver RVC and MLX. RVC and MLX co-loaded TAT-NLCs (TAT-NLCs-RVC/MLX) were evaluated through in vitro skin permeation and in vivo treatment studies. NLCs-RVC/MLX showed uniform and spherical morphology, with a size of 133.4 ± 4.6 nm and a zeta potential of 20.6 ± 1.8 mV. The results illustrated the anesthetic pain relief ability of the present constructed system was significantly improved by the TAT modification through the enhanced skin permeation efficiency and the co-delivery of MLX along with RVC that improved pain management by reducing inflammation at the injured area. This study provides an efficient and facile method for preparing TAT-NLCs-RVC/MLX as a promising system to achieve synergistic analgesic effect.
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Affiliation(s)
- Shu Yuan
- Department of Anesthesiology, Weifang Medical University, Weifang, China
| | - Jun Chen
- Department of Anesthesiology, Weifang Medical University, Weifang, China
| | - Shuo Feng
- Department of Gynecology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Min Li
- Department of Anesthesiology, Weifang Medical University, Weifang, China
| | - Yingui Sun
- Department of Anesthesiology, Weifang Medical University, Weifang, China
| | - Yuzhen Liu
- Department of Gynecology, Affiliated Hospital of Weifang Medical University, Weifang, China
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14
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Minkowitz H, Soto R, Fanikos J, Hammer GB, Mehta N, Hu J, Redan J. Opioid-Free Recovery After Hernia Repair with HTX-011 as the Foundation of a Non-Opioid, Multimodal Analgesia Regimen in a Real-World Setting: A Randomized, Open-Label Study. Pain Ther 2021; 10:1295-1308. [PMID: 34318438 PMCID: PMC8586395 DOI: 10.1007/s40122-021-00289-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/28/2021] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Helping Opioid Prescription Elimination (HOPE) is a project designed to provide surgeons with practical, real-world solutions to effectively manage postoperative pain and eliminate the need for opioids using HTX-011 (extended-release bupivacaine/low-dose meloxicam). In phase 3 herniorrhaphy and bunionectomy studies, HTX-011 without multimodal analgesia (MMA) was superior to bupivacaine hydrochloride in reducing pain and opioid consumption. Here, we examine the HOPE Hernia-1 study, which was designed to compare alternating ibuprofen/acetaminophen with concurrent use as part of an HTX-011-based non-opioid MMA regimen in patients undergoing herniorrhaphy and to evaluate the effectiveness of a personalized opioid prescription algorithm. METHODS Patients undergoing outpatient open inguinal herniorrhaphy with intraoperative administration of HTX-011 (300 mg bupivacaine/9 mg meloxicam) were randomly assigned to receive a scheduled oral regimen of ibuprofen plus acetaminophen, either taken together every 6 hours or alternating every 3 hours, for 5 days following surgery, while awake. Based on the opioid prescription algorithm evaluated here, patients could receive an oxycodone prescription upon discharge only if they had a numeric rating scale pain score of ≥ 6 at discharge and/or had received a postoperative rescue opioid. RESULTS The majority of patients did not require an opioid prescription through 2 weeks following surgery, and this was similar between cohorts (alternating MMA, 89.1%; concurrent MMA, 93.6%). Patient satisfaction was high for both regimens, and 95% of patients had an opioid-free recovery. No patient discharged without a prescription called back to request one. Treatment was well tolerated, without evidence of nonsteroidal anti-inflammatory drug-related toxicity. CONCLUSIONS HTX-011, used with over-the-counter products ibuprofen/acetaminophen and personalized opioid prescription algorithm in a real-world environment, has the potential to reduce opioid use and opioid prescriptions after herniorrhaphy without compromising patient satisfaction. TRIAL REGISTRATION ClinicalTrials.gov, NCT03237481.
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Affiliation(s)
| | - Roy Soto
- Beaumont Health System, 3601 W 13 Mile Rd, Royal Oak, MI USA
| | - John Fanikos
- Brigham and Women’s Hospital, 75 Francis St, Boston, MA 02115 USA
| | - Gregory B. Hammer
- Stanford University School of Medicine, 291 Campus Drive, Stanford, CA 94305 USA
| | - Neel Mehta
- Weill Cornell Pain Medicine Center, 1300 York Avenue, New York, NY 10065 USA
| | - Jia Hu
- Heron Therapeutics, Inc., 4242 Campus Point Court Suite 200, San Diego, CA 92121 USA
| | - Jay Redan
- AdventHealth Celebration, 400 Celebration Place, Celebration, FL 34747 USA
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Abstract
PURPOSE OF REVIEW To describe current developed regional blocks, their indications and clinical use. Furthermore, describe new local anesthetics recently introduced and the new agents in pipeline. RECENT FINDINGS There are multiple new blocks recently developed with the introduction of ultrasound to regional anesthesia and studies demonstrate effect in different surgical procedures. However, majority of the studies do not compare with gold standard and are relatively small to change clinical practice. Some of these blocks are: erector spinae plane block, infiltration between the popliteal artery and capsule of the posterior knee, pectoral nerve blocks, quadratus lumborum and transversus abdominis plane block. New local anesthetics and adjuvants have been developed in recent years. However, the studies with even with the oldest one introduced Exparel is currently questioned, large future studies are needed to determine efficacy and safety profile and compared with conventional local anesthetics. SUMMARY New regional block techniques and new local anesthetics have been introduced recently. However, the efficacy/safety and comparison to conventional techniques and local anesthetics are still needed. Future studies must focus on prolonging analgesia with least invasive regional technique and compare new local anesthetics with current ones.
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16
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A systematic review of porcine models in translational pain research. Lab Anim (NY) 2021; 50:313-326. [PMID: 34650279 DOI: 10.1038/s41684-021-00862-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 08/27/2021] [Indexed: 11/09/2022]
Abstract
Translating basic pain research from rodents to humans has proven to be a challenging task. Efforts have been made to develop preclinical large animal models of pain, such as the pig. However, no consistent overview and comparison of pig models of pain are currently available. Therefore, in this review, our primary aim was to identify the available pig models in pain research and compare these models in terms of intensity and duration. First, we systematically searched Proquest, Scopus and Web of Science and compared the duration for which the pigs were significantly sensitized as well as the intensity of mechanical sensitization. We searched models within the specific field of pain and adjacent fields in which pain induction or assessment is relevant, such as pig production. Second, we compared assessment methodologies in surrogate pain models in humans and pigs to identify areas of overlap and possible improvement. Based on the literature search, 23 types of porcine pain models were identified; 13 of which could be compared quantitatively. The induced sensitization lasted from hours to months and intensities ranged from insignificant to the maximum attainable. We also found a near to complete overlap of assessment methodologies between human and pig models within the area of peripheral neurophysiology, which allows for direct comparison of results obtained in the two species. In spite of this overlap, further development of pain assessment methodologies is still needed. We suggest that central nervous system electrophysiology, such as electroencephalography, electrocorticography or intracortical recordings, may pave the way for future objective pain assessment.
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17
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Blair HA. Bupivacaine/Meloxicam Prolonged Release: A Review in Postoperative Pain. Drugs 2021; 81:1203-1211. [PMID: 34228280 DOI: 10.1007/s40265-021-01551-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2021] [Indexed: 10/20/2022]
Abstract
Prolonged-release (PR; as ascribed in the EU) or extended-release (as ascribed in the USA) bupivacaine/meloxicam (HTX-011; hereafter referred to as bupivacaine/meloxicam PR; Zynrelef®) is a synergistic fixed-dose combination (FDC) of the local anaesthetic bupivacaine and the NSAID meloxicam. It is approved in the EU and the USA to treat postoperative pain. After needle-free application at the surgical site, the novel polymer technology allows simultaneous diffusion of bupivacaine and meloxicam over 72 h. In clinical trials, bupivacaine/meloxicam PR significantly reduced postoperative pain and opioid consumption relative to bupivacaine hydrochloride (HCl) and placebo in patients undergoing bunionectomy, herniorrhaphy or total knee arthroplasty (TKA). When used as the foundation of a scheduled non-opioid multimodal analgesia (MMA) regimen, bupivacaine/meloxicam PR further improved pain control and reduced the need for opioids following surgery. Bupivacaine/meloxicam PR was generally well tolerated, with a lower incidence of opioid-related adverse events than bupivacaine HCl and placebo. Although additional data would be beneficial, current evidence indicates that bupivacaine/meloxicam PR is a promising non-opioid treatment option for the management of postoperative pain.
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Affiliation(s)
- Hannah A Blair
- Springer Nature, Private Bag 65901, Mairangi Bay, Auckland, 0754, New Zealand.
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18
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Pollak R, Cai D, Gan TJ. Opioid-Free Recovery from Bunionectomy with HTX-011, a Dual-Acting Local Anesthetic Combining Bupivacaine and Meloxicam, as the Foundation of Non-Opioid Multimodal Analgesia. J Am Podiatr Med Assoc 2021; 111:451471. [PMID: 33471086 DOI: 10.7547/20-204] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND There is a need for postoperative pain control that minimizes or eliminates opioid use during the first 72 hours following surgery, when pain is most severe. HTX-011 is an extended-release, dual-acting local anesthetic that demonstrated superior 72-hour analgesia over standard of care bupivacaine hydrochloride (HCl) and saline placebo in a phase 3 bunionectomy study (EPOCH-1). Having shown HTX-011 monotherapy is superior to bupivacaine HCl in reducing postoperative pain intensity and opioid use, this follow-on study evaluated the safety and efficacy of HTX-011 as the foundation of a multimodal analgesia (MMA) regimen using over-the-counter medications recommended by practice guidelines for pain management. METHODS Following regional anesthesia administered as a lidocaine block, patients underwent unilateral bunionectomy with osteotomy and internal fixation. Prior to closure, HTX-011 (up to 60 mg bupivacaine/1.8 mg meloxicam) was applied without a needle. Patients received scheduled postoperative MMA alternating ibuprofen (600 mg) and acetaminophen (1 g) every 3 hours for 72 hours. Efficacy was assessed based on pain intensity (numeric rating scale [NRS; 0-10]) and consumption of opioid rescue medication (intravenous morphine milligram equivalents [MME]). Adverse event and vital sign monitoring, plus laboratory and wound healing assessments, were used to determine safety. RESULTS Over the 72-hour assessment period following bunionectomy, mean pain scores were mild in severity (NRS <4) and 22/31 patients (71%) experienced no severe pain (NRS ≥7) with HTX-011 as the foundation of scheduled, non-opioid MMA. Patients consumed an average of 1.61 MME total, with 24/31 (77%) requiring no opioid rescue medication (opioid-free). HTX-011 was well-tolerated and demonstrated no safety concerns with the inclusion of postoperative MMA. CONCLUSIONS HTX-011 as the foundation of an MMA regimen including scheduled ibuprofen and acetaminophen maintained mean postoperative pain scores in the mild range and enabled opioid-free recovery for 77% of bunionectomy patients through the 28-day recovery period.
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19
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Mazaleuskaya LL, Muzykantov VR, FitzGerald GA. Nanotherapeutic-directed approaches to analgesia. Trends Pharmacol Sci 2021; 42:527-550. [PMID: 33883067 DOI: 10.1016/j.tips.2021.03.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 03/14/2021] [Accepted: 03/18/2021] [Indexed: 11/26/2022]
Abstract
The ongoing opioid crisis highlighted the need for non-steroidal anti-inflammatory drugs (NSAIDs), nonaddictive analgesics against pain, fever, and inflammation. However, NSAIDs may cause gastrointestinal and cardiovascular adverse effects. To avoid systemic toxicity and deliver drugs to diseased tissues, nanotechnology methods of NSAID encapsulation have been reported and some have reached clinical development. Currently, 57 micro- and nanodrugs are approved by the US FDA. Already approved nanoanalgesics have revealed superior efficacy or reduced toxicity compared with placebo or lower doses of systemically administered active comparators. In this review, the evidence for approval of the marketed nanodrugs will be discussed, with a focus on therapies for pain and inflammation. Nanomedicine remains an attractive field for the development of targeted analgesics.
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Affiliation(s)
- Liudmila L Mazaleuskaya
- Institute for Translational Medicine and Therapeutics, The Department of Systems Pharmacology and Translational Therapeutics, and Center for Targeted Therapeutics and Translational Nanomedicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Vladimir R Muzykantov
- Institute for Translational Medicine and Therapeutics, The Department of Systems Pharmacology and Translational Therapeutics, and Center for Targeted Therapeutics and Translational Nanomedicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Garret A FitzGerald
- Institute for Translational Medicine and Therapeutics, The Department of Systems Pharmacology and Translational Therapeutics, and Center for Targeted Therapeutics and Translational Nanomedicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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20
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Cornett EM, Turpin MAC, Busby M, Pham AD, Kallurkar A, Brondeel KC, Schoonover J, Arulkumar S, Kaye AD. HTX-011 (bupivacaine and meloxicam) for the prevention of postoperative pain - clinical considerations. Pain Manag 2021; 11:347-356. [PMID: 33618542 DOI: 10.2217/pmt-2020-0097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
HTX-011 is an extended-release, dual-acting local anesthetic consisting of bupivacaine (sodium-channel blocker) and low-dose meloxicam (non-steroidal anti-inflammatory drug [NSAID]) applied needle-free during surgery. Introducing low-dose meloxicam addresses the limited efficacy of liposomal bupivacaine in acidic inflamed tissues and allows enhanced analgesic effects over three days. It has great promise to be an extremely effective postoperative pain regimen and produce an opioid-free surgical recovery, as it has consistently significantly reduced pain scores and opioid consumption through 72 h. This manuscript provides an updated, concise narrative review of the pharmacology, clinical efficacy, safety and tolerability of this drug and its applications to prevent postoperative pain.
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Affiliation(s)
- Elyse M Cornett
- Department of Anesthesiology, Assistant Professor, LSU Health Shreveport, 1501 Kings Highway, Shreveport, LA 71103, USA
| | - Michelle A Carroll Turpin
- Department of Biomedical Sciences, Assistant Professor of Pharmacology, College of Medicine, University of Houston, Health 2 Building, Room 8037, Houston, TX, USA
| | - Matthew Busby
- School of Medicine, LSU Health Shreveport, Shreveport, LA 71103, USA
| | - Alex D Pham
- Department of Anesthesiology, LSU Health New Orleans, 1542 Tulane Ave, Room 659, New Orleans, LA 70112, USA
| | - Anusha Kallurkar
- Department of Anesthesiology, Resident, LSU Health Shreveport, 1501 Kings Highway, Shreveport, LA 71103, USA
| | - Kimberley C Brondeel
- School of Medicine, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555, USA
| | - John Schoonover
- Department of Family Medicine, Resident Physician, St. Anthony Hospital Oklahoma City, 608 NW 9th St Suite 1100, Oklahoma City, OK 73102, USA
| | - Sailesh Arulkumar
- Department of Interventional Pain, Attending Physician, SSM Hospital, 800 NW 9th St Suite 201, Oklahoma City, OK 73106, USA
| | - Alan D Kaye
- Provost & Vice Chancellor of Academic Affairs, LSU Health Shreveport, 1501 Kings Highway, Shreveport, LA 71103, USA
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21
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Singla N, Winkle P, Bertoch T, Hu J, Beaton A, Redan J. Opioid-free recovery after herniorrhaphy with HTX-011 as the foundation of a multimodal analgesic regimen. Surgery 2020; 168:915-920. [DOI: 10.1016/j.surg.2020.06.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 06/12/2020] [Accepted: 06/21/2020] [Indexed: 10/23/2022]
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22
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Lachiewicz PF, Lee GC, Pollak RA, Leiman DG, Hu J, Sah AP. HTX-011 Reduced Pain and Opioid Use After Primary Total Knee Arthroplasty: Results of a Randomized Phase 2b Trial. J Arthroplasty 2020; 35:2843-2851. [PMID: 32561266 DOI: 10.1016/j.arth.2020.05.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/12/2020] [Accepted: 05/19/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND HTX-011 is an extended-release, dual-acting local anesthetic consisting of bupivacaine and low-dose meloxicam in a novel polymer that is administered by needle-free application during surgery. The active ingredients are released from the polymer by controlled diffusion over 72 hours. METHODS This phase 2b, double-blind, placebo-controlled and active-controlled trial enrolled patients undergoing primary unilateral total knee arthroplasty under general anesthesia. Two hundred thirty-two patients were randomized into 4 groups: HTX-011 400 mg bupivacaine/12 mg meloxicam, applied without a needle into the surgical site, the same dose of HTX-011 with a separate 50 mg ropivacaine injection into the posterior capsule, bupivacaine hydrochloride (HCl) 125 mg injection, and saline placebo injection. Only opioids were permitted for postoperative pain rescue. Primary and key secondary endpoints were mean area under the curve of pain intensity scores over 48 hours and 72 hours, respectively, for HTX-011 groups vs placebo. RESULTS Both HTX-011 groups had significantly reduced mean pain intensity vs placebo through 48 and 72 hours (both P < .001). Ropivacaine added a small initial benefit in the first 12 hours. Both HTX-011 groups also had decreased mean pain intensity vs bupivacaine HCl alone through 48 and 72 hours (P < .05). The HTX-011 groups had significantly earlier discharge readiness along with lower opioid consumption through 72 hours. HTX-011 alone or with ropivacaine was well-tolerated with a safety profile similar to controls. CONCLUSION Needle-free application of HTX-011 400 mg bupivacaine/12 mg meloxicam provided superior pain reduction through 72 hours after total knee arthroplasty compared with placebo and bupivacaine HCl alone.
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Affiliation(s)
| | - Gwo-Chin Lee
- Department of Orthopaedic Surgery, University of Pennsylvania, Penn Medicine University City, Philadelphia, PA
| | | | - David G Leiman
- HD Research Corp, Houston, TX; Department of Surgery, University of Texas at Houston, Houston, TX
| | - Jia Hu
- Heron Therapeutics Inc, San Diego, CA
| | - Alexander P Sah
- Sah Orthopaedic Associates, Center for Joint Replacement Bldg, Fremont, CA
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23
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Yamak Altinpulluk E, Turan A. Future in regional anesthesia: new techniques and technological advancements. Minerva Anestesiol 2020; 87:85-100. [PMID: 32959636 DOI: 10.23736/s0375-9393.20.14791-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Regional anesthesia has a very interesting long history, initially preferred over general anesthesia because of safety concerns, then for a period general anesthesia became safer and was preferred. The use of innovative technologies such as ultrasound technology has made the blocks safer and successful by directly visualizing targeted nerves and the location of local anesthetics. With the wide use of ultrasound in the regional anesthesia field success rate of peripheral nerve blocks increased and novel blocks techniques developed. Moreover, new extended-release local anesthetic agents have begun to be promising time-efficient and longer duration of analgesia with a single injection. In this article, we attempt to summarize some of the novel block techniques, pharmacological agents, and new technologies in the field of regional anesthesia.
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Affiliation(s)
- Ece Yamak Altinpulluk
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH, USA.,Department of Anesthesiology and Reanimation, Faculty of Medicine, Istanbul University Cerrahpaşa, Instambul, Turkey
| | - Alparslan Turan
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH, USA - .,Department of General Anesthesiology, Anesthesiology Institute, Cleveland Clinic OH, USA
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24
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Hafer J, Johnson KB. Mechanism of action of HTX-011: a novel, extended-release, dual-acting local anesthetic formulation for postoperative pain. Reg Anesth Pain Med 2020; 45:1030-1031. [DOI: 10.1136/rapm-2020-101430] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 03/07/2020] [Indexed: 11/03/2022]
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25
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Ottoboni T, Quart B, Pawasauskas J, Dasta JF, Pollak RA, Viscusi ER. Response to the letter to the editor by Hafer and Johnson concerning 'Mechanism of action of HTX-011: a novel, extended-release, dual-acting local anesthetic formulation for postoperative pain'. Reg Anesth Pain Med 2020; 45:1031-1032. [PMID: 32487703 PMCID: PMC7691810 DOI: 10.1136/rapm-2020-101488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 03/26/2020] [Indexed: 11/08/2022]
Affiliation(s)
| | - Barry Quart
- Heron Therapeutics, Inc, San Diego, California, USA
| | - Jayne Pawasauskas
- College of Pharmacy, University of Rhode Island, Kingston, Rhode Island, USA
| | - Joseph F Dasta
- College of Pharmacy, Ohio State University, Columbus, Ohio, USA.,College of Pharmacy, University of Texas, Austin, Texas, USA
| | | | - Eugene R Viscusi
- Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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