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Balsevicius L, Urbano PCM, Hasselager RP, Mohamud AA, Olausson M, Svraka M, Wahlstrøm KL, Oppermann C, Gögenur DS, Hølmich ER, Cappelen B, Sækmose SG, Tanggaard K, Litman T, Børglum J, Brix S, Gögenur I. Effect of anterior quadratus lumborum block with ropivacaine on the immune response after laparoscopic surgery in colon cancer: a substudy of a randomized clinical trial. Reg Anesth Pain Med 2023:rapm-2023-104896. [PMID: 37945063 DOI: 10.1136/rapm-2023-104896] [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: 09/06/2023] [Accepted: 10/21/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND Surgery induces a temporal change in the immune system, which might be modified by regional anesthesia. Applying a bilateral preoperative anterior quadratus lumborum block has proven to be a safe and effective technique in pain management after abdominal and retroperitoneal surgery, but the effect on the immune response is not thoroughly investigated. METHODS This study is a substudy of a randomized, controlled, double-blinded trial of patients undergoing laparoscopic hemicolectomy due to colon cancer. Twenty-two patients were randomized to undergo either a bilateral anterior quadratus lumborum nerve block with a total of 60 mL ropivacaine 0.375% or placebo with corresponding isotonic saline injections. The main objective of this exploratory substudy was to investigate the systemic immune response in the first postoperative day by examining changes in blood transcript levels (n=750) and stimulated secretion of cytokines (n=17) on ex vivo activation with microbial ligands and anti-CD3/CD28. RESULTS Using unsupervised data analysis tools, we observed no effect of the bilateral anterior quadratus lumborum nerve block on gene expression in immune cells (permutational multivariate analysis of variance using distance matrices: F=0.52, p=0.96), abundances of major immune cell populations (Wilcoxon rank-sum test: p>0.05), and stimulated cytokine secretion (Wilcoxon rank-sum test: p>0.05). CONCLUSIONS Our study provides evidence that administration of bilateral anterior quadratus lumborum nerve block as a part of a multimodal analgesic regimen in an enhanced recovery after surgery for laparoscopic hemicolectomy in this cohort does not alter the systemic immune response.Trial registration number NCT03570541.
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Affiliation(s)
- Lukas Balsevicius
- Department of Surgery, Zealand University Hospital, Koge, Denmark
- Graduate School of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Paulo C M Urbano
- Department of Surgery, Zealand University Hospital, Koge, Denmark
| | - Rune Petring Hasselager
- Department of Surgery, Zealand University Hospital, Koge, Denmark
- Euro-Periscope, Onco-Anaesthesiology Research Group (RG), European Society of Anaesthesiology, Brussels, Belgium
| | | | - Maria Olausson
- Department of Surgery, Zealand University Hospital, Koge, Denmark
| | - Melina Svraka
- Department of Surgery, Zealand University Hospital, Koge, Denmark
| | | | | | | | | | - Britt Cappelen
- Department of Surgery, Zealand University Hospital, Koge, Denmark
| | | | - Katrine Tanggaard
- Department of Anesthesiology and Intensive Care, Zealand University Hospital, Roskilde, Denmark
| | - Thomas Litman
- Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Jens Børglum
- Department of Anesthesiology and Intensive Care, Zealand University Hospital, Roskilde, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Susanne Brix
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Ismail Gögenur
- Department of Surgery, Zealand University Hospital, Koge, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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Wall TP, Buggy DJ. Perioperative Intravenous Lidocaine and Metastatic Cancer Recurrence - A Narrative Review. Front Oncol 2021; 11:688896. [PMID: 34408981 PMCID: PMC8365881 DOI: 10.3389/fonc.2021.688896] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/15/2021] [Indexed: 12/17/2022] Open
Abstract
Cancer is a major global health problem and the second leading cause of death worldwide. When detected early, surgery provides a potentially curative intervention for many solid organ tumours. Unfortunately, cancer frequently recurs postoperatively. Evidence from laboratory and retrospective clinical studies suggests that the choice of anaesthetic and analgesic agents used perioperatively may influence the activity of residual cancer cells and thus affect subsequent recurrence risk. The amide local anaesthetic lidocaine has a well-established role in perioperative therapeutics, whether used systemically as an analgesic agent or in the provision of regional anaesthesia. Under laboratory conditions, lidocaine has been shown to inhibit cancer cell behaviour and exerts beneficial effects on components of the inflammatory and immune responses which are known to affect cancer biology. These findings raise the possibility that lidocaine administered perioperatively as a safe and inexpensive intravenous infusion may provide significant benefits in terms of long term cancer outcomes. However, despite the volume of promising laboratory data, robust prospective clinical evidence supporting beneficial anti-cancer effects of perioperative lidocaine treatment is lacking, although trials are planned to address this. This review provides a state of the art summary of the current knowledge base and recent advances regarding perioperative lidocaine therapy, its biological effects and influence on postoperative cancer outcomes.
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Affiliation(s)
- Thomas P Wall
- Department of Anaesthesiology, Mater Misericordiae University Hospital, School of Medicine, University College Dublin, Dublin, Ireland.,EU COST Action 15204, Euro-Periscope, Brussels, Belgium
| | - Donal J Buggy
- Department of Anaesthesiology, Mater Misericordiae University Hospital, School of Medicine, University College Dublin, Dublin, Ireland.,EU COST Action 15204, Euro-Periscope, Brussels, Belgium.,Outcomes Research, Cleveland Clinic, Cleveland, OH, United States
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Kolle G, Metterlein T, Gruber M, Seyfried T, Petermichl W, Pfaehler SM, Bitzinger D, Wittmann S, Bredthauer A. Potential Impact of Local Anesthetics Inducing Granulocyte Arrest and Altering Immune Functions on Perioperative Outcome. J Inflamm Res 2021; 14:1-12. [PMID: 33442284 PMCID: PMC7797324 DOI: 10.2147/jir.s275525] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/18/2020] [Indexed: 12/13/2022] Open
Abstract
Introduction Local anesthetics (LAs) are frequently used during anesthesia; however, they may influence granulocyte function which in turn could modify immune responses in the perioperative period. Therefore, the aim of this study was to investigate the impact of clinically used doses of bupivacaine and lidocaine on granulocyte function with regard to migration, reactive oxygen species (ROS) production, neutrophil extracellular traps (NETosis) formation, and viability. Methods A total of 38 granulocyte-enriched samples from healthy subjects were obtained by whole blood lysis. Polymorphonuclear neutrophil (PMN) samples were incubated simultaneously with different concentrations of either bupivacaine (0.03–3.16 mmol/L) or lidocaine (0.007–14.21 mmol/L), or without drug (control). Live cell imaging was conducted in order to observe granulocyte chemotaxis, migration, ROS production, and NETosis. Flow cytometry was used to analyze viability and antigen expression. Results The track length (TL) of PMNs exposed to bupivacaine concentrations of 0.16 mmol/L and above significantly decreased compared to the control. Low concentrations of lidocaine were associated with slight but significant increases in TL, whereas this changed with concentrations above 1.4 mmol/L, showing a significant decrease in TL. PMN incubated with bupivacaine concentrations of 1.58 mmol/L and above or lidocaine concentrations of at least 3.6 mmol/L showed no migration or chemotaxis at all. Time to onset of maximal ROS production and time for half-maximal NETosis decreased in a dose-dependent manner for both substances. Equipotency in NETosis induction was reached by bupivacaine (1.1 mmol/L) at significantly lower concentrations than lidocaine (7.96 mmol/L). Cell viability and oxidative burst were unaffected by LAs. Conclusion Local anesthetics in clinically used doses ameliorate granulocyte defense mechanisms, thus indicating their potentially decisive effect during the perioperative period.
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Affiliation(s)
- Gesche Kolle
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany
| | - Thomas Metterlein
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany.,Department of Anesthesiology, Klinikum Ansbach, Ansbach 91522, Germany
| | - Michael Gruber
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany
| | - Timo Seyfried
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany
| | - Walter Petermichl
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany
| | - Sophie-Marie Pfaehler
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany
| | - Diane Bitzinger
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany
| | - Sigrid Wittmann
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany
| | - Andre Bredthauer
- Department of Anesthesiology, University Medical Centre Regensburg, Regensburg 93053, Germany
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Postoperative clinical outcomes and inflammatory markers after inguinal hernia repair using local, spinal, or general anesthesia: A randomized controlled trial. PLoS One 2020; 15:e0242925. [PMID: 33253306 PMCID: PMC7703886 DOI: 10.1371/journal.pone.0242925] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 11/10/2020] [Indexed: 12/03/2022] Open
Abstract
Background No consensus has yet been reached regarding the best anesthetic technique for inguinal hernia repair. This study aimed to compare postoperative clinical outcomes and inflammatory markers among patients who were anesthetized using local, spinal, or general anesthesia for inguinal hernia repair. Methods This randomized controlled trial included patients scheduled to undergo elective unilateral inguinal hernioplasty at Siriraj Hospital during November 2014 to September 2015 study period. Patients were randomly assigned to the local (LA), spinal (SA), or general (GA) anesthesia groups. Primary outcomes were postoperative pain at rest and on mobilization at 8 and 24 hours after surgery. Results Fifty-four patients were included, with 18 patients randomly assigned to each group. Patient demographic and clinical characteristics were similar among groups. There were no significant differences among groups for postoperative pain at rest or on mobilization at 8 and 24 hours after surgery. No significant differences were observed for interleukin-1β, interleukin-6, and interleukin-10 at any time points in any groups. Patients with local anesthesia was associated with less time spent in anesthesia (p = 0.010) and surgery (p = 0.009), lower intraoperative cost (p = 0.003) and total cost in hospital (p = 0.036); however, patient satisfaction in the local anesthesia group (94/100) was statistically significantly lower than the spinal and general anesthesia groups (100/100) (p = 0.010). Conclusions No statistically significant difference was observed among groups for postoperative pain scores, duration of hospital stays, complications, or change in inflammatory markers. However, time spent in anesthesia and surgery, the intraoperative cost and total cost for hernia repair, and patient satisfaction were significantly lower in the local anesthesia group than in the other two groups.
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Medical Management of Hemorrhagic Bowel Syndrome in a Beef Bull. Case Rep Vet Med 2019; 2019:9209705. [PMID: 31781470 PMCID: PMC6875306 DOI: 10.1155/2019/9209705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 09/17/2019] [Indexed: 12/18/2022] Open
Abstract
A two and a half-year old Simmental bull was presented to Iowa State University's Food Animal and Camelid Hospital for anorexia and lethargy of several days. Clostridium perfringens type A was identified via fecal culture and toxin genotyping. Hemorrhagic bowel syndrome (HBS) was diagnosed based on microbiological results along with abdominal ultrasonography, complete blood count, and serum biochemistry. Aggressive multi-modal therapy was employed including intravenously administered fluid therapy, potassium penicillin, lidocaine, flunixin, and pantoprazole among other supportive care. The bull was discharged after 15 days of hospitalization and recovered uneventfully to full function by the next breeding season. Currently all case reports with regard to HBS in beef cattle describe mortality. While the dairy cattle literature demonstrates that HBS has a high mortality rate, and suggests that surgical intervention has a higher prognosis when compared to medical therapy in dairy cattle. Our case would provide support to aggressive medical treatment for HBS in beef cattle.
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Jakobsson J, Johnson MZ. Perioperative regional anaesthesia and postoperative longer-term outcomes. F1000Res 2016; 5:F1000 Faculty Rev-2501. [PMID: 27785357 PMCID: PMC5063036 DOI: 10.12688/f1000research.9100.1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/10/2016] [Indexed: 12/14/2022] Open
Abstract
Regional anaesthesia provides effective anaesthesia and analgesia in the perioperative setting. Central neuraxial blocks-that is, spinal and epidural blocks-are well established as an alternative or adjunct to general anaesthesia. Peripheral blocks may be used as part of multimodal anaesthesia/analgesia in perioperative practice, reducing the need for opioid analgesics and enhancing early recovery. Furthermore, regional anaesthesia has increased in popularity and may be done with improved ease and safety with the introduction of ultrasound-guided techniques. The effects of local anaesthetics and regional anaesthesia on long-term outcomes such as morbidity, mortality, the quality of recovery beyond the duration of analgesia, and whether it can expedite the resumption of activities of daily living are less clear. It has also been suggested that regional anaesthesia may impact the risk of metastasis after cancer surgery. This article provides an overview of current evidence around quality of recovery, risk for delirium, long-term effects, and possible impact on cancer disease progression associated with the clinical use of local and regional anaesthetic techniques. In summary, there is still a lack of robust data that regional anaesthesia has a clinical impact beyond its well-acknowledged beneficial effects of reducing pain, reduced opioid consumption, and improved quality of early recovery. Further high-quality prospective studies on long-term outcomes are warranted.
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Affiliation(s)
- Jan Jakobsson
- Department of Anaesthesia & Intensive Care, Institution for Clinical Science, Karolinska Institutet, Danderyds University Hospital, Stockholm, Sweden
| | - Mark Z. Johnson
- Department of Anaesthesia & Critical Care, Mater Misercordiae University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
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Effects of local anesthetics on the respiratory burst of cord blood neutrophils in vitro. Pediatr Res 2016; 80:258-66. [PMID: 27055189 DOI: 10.1038/pr.2016.68] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 02/02/2016] [Indexed: 11/09/2022]
Abstract
BACKGROUND Whether local anesthetics exert anti-inflammatory effects in fetal and newborn systemic neutrophils is unclear. The aim of the present study was to assess the effects of bupivacaine and lidocaine on the respiratory burst of cord blood neutrophils in vitro compared with adult cells. METHODS Whole cord blood (n = 12) and control adult blood samples (n = 7) were incubated with bupivacaine (0.0005, 0.005, 0.05, 1 mmol/l) and lidocaine (0.002, 0.02, 0.2, 4 mmol/l) for 1 and 4 h. The production of reactive oxygen species (ROS) by unstimulated neutrophils and the phorbol myristate acetate-induced oxidative burst were assessed by flow cytometry. A subset of neutrophils showing high fluorescence intensity (rho+) was analyzed separately. RESULTS After 1 h incubation, local anesthetics decreased the respiratory burst in whole cord blood and adult neutrophils in a similar manner. At the clinically relevant concentration of 0.0005 mmol/l, bupivacaine was active, but its effect in cord blood cells could not be detected after 4 h. The cord blood rho+ cell subset was unresponsive to the inhibitory action of bupivacaine. In rho+ neutrophils, basal ROS production was stimulated by lidocaine at the lowest concentration tested. CONCLUSION Bupivacaine and lidocaine can decrease the respiratory burst in neutrophils of term newborns.
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Weinberg L, Peake B, Tan C, Nikfarjam M. Pharmacokinetics and pharmacodynamics of lignocaine: A review. World J Anesthesiol 2015; 4:17-29. [DOI: 10.5313/wja.v4.i2.17] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2014] [Revised: 12/16/2014] [Accepted: 04/14/2015] [Indexed: 02/06/2023] Open
Abstract
Lignocaine is an essential drug on World Health Organisation essential drug list, considered efficacious, safe and cost-effective for any health-care system. Despite its ubiquitous use in medicine and surgery, there are few detailed reviews of its pharmacokinetics and pharmacodynamics. Being an amide-type local anesthetic and Class 1b antiarrhythmic, lignocaine is most frequently used clinically for its anesthetic and antiarrhythmic benefits. However, lignocaine has important antinociceptive, immuno-modulating, and anti-inflammatory properties. Information pertaining to the pharmacokinetics and pharmacodynamics of lignocaine was examined by performing a literature search of PubMed, Embase and MEDLINE (via Ovid), pharmacology textbooks and online sources. We present a focused synopsis of lignocaine’s pharmacological composition, indications for use and mechanisms of action, focusing on its anti-inflammatory, immuno-modulating and analgesia effects. In addition we review the dosing regimes and infusion kinetics of lignocaine in the clinical setting. Finally, we review the evidence for ligocaine’s modulation of the inflammatory response during major surgery and its specific effects on cancer recurrence. These indirect effects of local anesthetics in tumor development may stem from the reduction of neuroendocrine responses to the stress response elicited by major surgery and tissue damage, enhanced preservation of immune-competence, in addition to opioid-sparing effects of modulating tumor growth.
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Birle A, Nebe CT, Hill S, Hartmann K, Poeschl J, Koch L. Neutrophil chemotaxis in cord blood of term and preterm neonates is reduced in preterm neonates and influenced by the mode of delivery and anaesthesia. PLoS One 2015; 10:e0120341. [PMID: 25867529 PMCID: PMC4395085 DOI: 10.1371/journal.pone.0120341] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Accepted: 01/22/2015] [Indexed: 12/03/2022] Open
Abstract
Bacterial infections, even without any perinatal risk factors, are common in newborns, especially in preterm neonates. The aim of this study was to evaluate possible impairment of neutrophil chemotaxis in term and preterm neonates compared with adults as well as neonates with different modes of delivery and anaesthesia. We analysed the expression of the adhesion molecule L-Selectin as well as shape change, spontaneous and N-formyl-methionyl-leucyl-phenylalanine (fMLP)-induced transmigration of neutrophils in a flow cytometric assay of chemotaxis after spontaneous delivery with Cesarian Section (CS) under spinal anaesthesia (mepivacaine, sufentanil), epidural anaesthesia (ropivacaine or bupivacaine, sufentanil) or general anaesthesia (ketamine, thiopental, succinylcholine). Chemokinesis was higher (p=0.008) in cord blood neutrophils than in the adult ones, whereas those could be more stimulated by fMLP (p=0.02). After vaginal delivery neutrophils showed a higher spontaneous and fMLP-stimulated chemotactic response compared to neonates after CS without labor. Comparing different types of anaesthesia for CS, spinal anaesthesia resulted in less impairment on chemotaxis than general anaesthesia or epidural anaesthesia. The new flow cytometric assay of neutrophil chemotaxis is an appropriate and objective method to analyse functional differences even in very small volumes of blood, essential in neonatology. Term neonates do not show reduced chemotaxis compared to adults. Preterm neonates present with reduced chemotaxis and chemokinesis, confirming the well known deficits in their neutrophil function. The side effects of maternal drugs on the neonatal immune system have to be considered especially when the immune response is already impaired, as in preterm infants.
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Affiliation(s)
- Alexandra Birle
- Department of Neonatology, University Children’s Hospital, Medical School, Heidelberg, Germany
- * E-mail:
| | | | - Sandra Hill
- Department of Neonatology, University Children’s Hospital, Medical School, Heidelberg, Germany
| | | | - Johannes Poeschl
- Department of Neonatology, University Children’s Hospital, Medical School, Heidelberg, Germany
| | - Lutz Koch
- Department of Neonatology, University Children’s Hospital, Medical School, Heidelberg, Germany
- Department of Neonatology, Catholic Children's Hospital Wilhelmstift, Hamburg, Germany
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Kawasaki T, Kawasaki C, Sata T, Chaudry IH. Lidocaine suppresses mouse Peyer's Patch T cell functions and induces bacterial translocation. Surgery 2010; 149:106-13. [PMID: 20466400 DOI: 10.1016/j.surg.2010.03.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Accepted: 03/25/2010] [Indexed: 10/19/2022]
Abstract
BACKGROUND The gastrointestinal mucosa is an important route of entry for microbial pathogens. The immune cells of Peyer's patch (PP) compartments contribute to the active immune response against infection. Although local anesthetics are widely used in clinical practice, it remains unclear whether local anesthetics such as lidocaine affect PP T cell functions. METHODS The aim of this study was to examine if lidocaine has any effects on mouse PP T cell functions. To test this, freshly isolated mouse Peyer's patch T cells were incubated with lidocaine. The effects of lidocaine on concanavalin A-stimulated PP T cell proliferation and cytokine production were assessed. The effect of lidocaine on PP T cell mitogen-activated protein kinase (MAPK) activation was also assessed. RESULTS The results indicate that lidocaine suppresses cell proliferation, cytokine production, and MAPK activation in PP T cells. Furthermore, we found that the chronic in vivo exposure to lidocaine increases bacterial accumulation in PP. CONCLUSION The enhanced immunosuppressive effects of lidocaine on PP T cell functions could contribute to the host's enhanced susceptibility to infection.
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Affiliation(s)
- Takashi Kawasaki
- Center for Surgical Research and Department of Surgery, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Simpson D, Curran MP, Oldfield V, Keating GM. Ropivacaine: a review of its use in regional anaesthesia and acute pain management. Drugs 2006; 65:2675-717. [PMID: 16392884 DOI: 10.2165/00003495-200565180-00013] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Ropivacaine (Naropin) is the pure S(-)-enantiomer of propivacaine, and is a long-acting amide local anaesthetic agent, eliciting nerve block via reversible inhibition of sodium ion influx in nerve fibres. Ropivacaine is a well tolerated regional anaesthetic effective for surgical anaesthesia as well as the relief of postoperative and labour pain. The efficacy of ropivacaine is similar to that of bupivacaine and levobupivacaine for peripheral nerve blocks and, although it may be slightly less potent than bupivacaine when administered epidurally or intrathecally, equi-effective doses have been established. Clinically adequate doses of ropivacaine appear to be associated with a lower incidence or grade of motor block than bupivacaine. Thus ropivacaine, with its efficacy, lower propensity for motor block and reduced potential for CNS toxicity and cardiotoxicity, appears to be an important option for regional anaesthesia and for the management of postoperative and labour pain.
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Affiliation(s)
- Dene Simpson
- Adis International Limited, Auckland, New Zealand.
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Cassuto J, Sinclair R, Bonderovic M. Anti-inflammatory properties of local anesthetics and their present and potential clinical implications. Acta Anaesthesiol Scand 2006; 50:265-82. [PMID: 16480459 DOI: 10.1111/j.1399-6576.2006.00936.x] [Citation(s) in RCA: 206] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Development of new local anesthetic agents has been focused on the potency of their nerve-blocking effects, duration of action and safety and has resulted in a substantial number of agents in clinical use. It is well established and well documented that the nerve blocking effects of local anesthetics are secondary to their interaction with the Na+ channels thereby blocking nerve membrane excitability and the generation of action potentials. Accumulating data suggest however that local anesthetics also possess a wide range of anti-inflammatory actions through their effects on cells of the immune system, as well as on other cells, e.g. microorganisms, thrombocytes and erythrocytes. The potent anti-inflammatory properties of local anesthetics, superior in several aspects to traditional anti-inflammatory agents of the NSAID and steroid groups and with fewer side-effects, has prompted clinicians to introduce them in the treatment of various inflammation-related conditions and diseases. They have proved successful in the treatment of burn injuries, interstitial cystitis, ulcerative proctitis, arthritis and herpes simplex infections. The detailed mechanisms of action are not fully understood but seem to involve a reversible interaction with membrane proteins and lipids thus regulating cell metabolic activity, migration, exocytosis and phagocytosis.
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Affiliation(s)
- J Cassuto
- Department of Anesthesiology and Intensive Care and Institution of Surgical Specialties, Sahlgrenska University Hospital, Mölndal, Sweden.
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