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Local anaesthetics

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https://www.readbyqxmd.com/read/28819223/levobuipivacaine-induced-dissemination-of-a549-lung-cancer-cells
#1
Shun-Ming Chan, Bo-Feng Lin, Chih-Shung Wong, Wen-Ting Chuang, Yu-Ting Chou, Zhi-Fu Wu
While anaesthetics are frequently used on cancer patients during surgical procedures, their consequence on cancer progression remains to be elucidated. In this study, we sought to investigate the influence of local anesthetics on lung cancer cell dissemination in vitro and in vivo. A549 human non-small lung cancer cells were treated with various local anaesthetics including ropivacaine, lidocaine, levobupivacaine and bupivacaine. Cell barrier property was assessed using an electric cell-substrate impedance sensing (ECIS) system...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818693/hybrid-photoacoustic-and-electrophysiological-recording-of-neurovascular-communications-in-freely-moving-rats
#2
Lei Xi, Tian Jin, Junli Zhou, Paul Carney, Hubei Jiang
Uncovering the relationships between neural activities and capillary-level hemodynamics such as blood flow and concentration of hemoglobin in the brain plays an important role in the study of animal behaviors and brain disorders. Here, we developed a miniature probe integrating a photoacoustic sensor and micro-electrodes to simultaneously record the dynamics of blood flow and total hemoglobin inside a single capillary and the activities of surrounding neurons with high spatiotemporal resolution in freely-moving rats...
August 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28798394/orthosteric-versus-allosteric-dependent-activation-of-the-gabaa-receptor-requires-numerically-distinct-subunit-level-rearrangements
#3
Jahanshah Amin, Meena S Subbarayan
Anaesthetic molecules act on synaptic transmission via the allosteric modulation of ligand-gated chloride channels, such as hetero-oligomeric α1β2γ2 GABAA receptors. To elucidate the overall activation paradigm via allosteric versus orthosteric sites, we used highly homologous, but homo-oligomeric, ρ1 receptors that are contrastingly insensitive to anaesthetics and respond partially to several full GABA α1β2γ2 receptor agonists. Here, we coexpressed varying ratios of RNAs encoding the wild-type and the mutated ρ1 subunits, which are anaesthetic-sensitive and respond with full efficacy to partial GABA agonists, to generate distinct ensembles of receptors containing five, four, three, two, one, or zero mutated subunits...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28794532/local-anaesthetic-systemic-toxicity-following-oral-ingestion-in-a-child-revisiting-dibucaine
#4
Raylene Dias, Nandini Dave, Milind S Tullu, Chandrahas T Deshmukh
Dibucaine, a potent and toxic local anaesthetic, although currently withdrawn by the United States Food and Drug Administration for use as a spinal anaesthetic, continues to remain available in many over-the-counter topical formulations. Systemic toxicity following oral ingestion of local anaesthetics is rare. We report a case of accidental ingestion of dibucaine (ear drops) in a 7-year-old child who developed diplopia, giddiness, ventricular premature contractions and a right bundle branch block. We also present a brief discussion on the pharmacologic and toxicity profile of dibucaine, the Naranjo algorithm for assessing causality in case of adverse drug reactions and a review of current guidelines on the management of local anaesthetic systemic toxicity...
July 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28794527/the-effect-of-addition-of-dexamethasone-to-levobupivacaine-in-parturients-receiving-combined-spinal-epidural-for-analgesia-for-vaginal-delivery
#5
Amr Samir Wahdan, Ahmed Ibrahim El-Sakka, Hassan Mostafa Ismail Gaafar
BACKGROUND AND AIMS: Regional analgesia is commonly used for the relief of labour pain, Prolongation of analgesia can be achieved by adjuvant medications. The aim of this randomised controlled trial was to evaluate the efficacy of intrathecal levobupivacaine with dexamethasone for labour analgesia. METHODS: A total of 80 females were included in this study, all were primigravidas undergoing vaginal delivery with cervical dilatation ≥4 cm and 50% or more effacement...
July 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28794523/safety-monitoring-of-local-anaesthetic-drugs-from-the-perspective-of-pharmacovigilance-programme-of-india
#6
Pramod Kumar, Ismeet Kaur, Vivekanandan Kalaiselvan, Abhishank Singh
Pharmacovigilance Programme of India (PvPI) was established to promote patient safety by the Ministry of Health and Family Welfare, Government of India in July 2010. It covers various medical hospitals/institutes and National Health Programmes across the country. India is coordinating with various national and international programmes to be a part of international drug monitoring and to monitor the risk-benefit profile of medicines. At present, India has contributed more than 200,000 adverse drug reactions (ADRs) to the database and can draw signals for regulatory decisions...
July 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28776593/relationship-between-the-phenylephrine-test-and-eyelid-droop-after-aponeurotic-repair-with-the-use-of-an-epinephrine-containing-local-anaesthetic
#7
H Matsuda, T Shiba, Y Takahashi, H Tsuneoka
PurposeTo analyse the relationship between the results of the phenylephrine test and postoperative eyelid droop in transcutaneous aponeurotic repair using epinephrine-containing local anaesthetic for aponeurotic blepharoptosis.Patients and methodsWe retrospectively reviewed the medical records of 66 eyelids from 40 patients who underwent transcutaneous aponeurotic repair. A positive phenylephrine test result was defined as an increase in margin reflex distance-1 (MRD-1) ≥0.5 mm after application of phenylephrine eye drops...
August 4, 2017: Eye
https://www.readbyqxmd.com/read/28763318/plasma-levels-of-local-anaesthetic-following-supraclavicular-block
#8
Kelly P Byrne, Derek Dillane, Ban C Tsui
No abstract text is available yet for this article.
September 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28763315/efficacy-and-safety-of-buprenorphine-in-peripheral-nerve-blocks-a-meta-analysis-of-randomised-controlled-trials
#9
Alexander Schnabel, Sylvia U Reichl, Peter K Zahn, Esther M Pogatzki-Zahn, Christine H Meyer-Frießem
BACKGROUND: The duration of analgesia provided by nerve blocks is limited if local anaesthetics are administered alone. Therefore, a variety of additives to local anaesthetics have been investigated to prolong postoperative analgesia following single-shot nerve blocks. OBJECTIVE(S): The aims of the current meta-analysis were to assess the efficacy and safety of the addition of perineural buprenorphine to local anaesthetic compared with local anaesthetic alone, or combined with systemic administration of buprenorphine, or other perineural opioids for peripheral nerve blocks...
September 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28758534/local-anaesthetic-refinement-of-pentobarbital-euthanasia-reduces-abdominal-writhing-without-affecting-immunohistochemical-endpoints-in-rats
#10
Shaun Y-S Khoo, Belinda P P Lay, Josephine Joya, Gavan P McNally
Sodium pentobarbital is a commonly used agent for euthanizing laboratory rats, however its high pH can cause abdominal discomfort after intraperitoneal injection. Previous studies suggest that the addition of a local anaesthetic may alleviate this discomfort, but the practice has not been widely adopted. We examined the effect of combining lidocaine with pentobarbital on abdominal writhing, defecation, ultrasonic vocalizations, the rat grimace scale and immunohistochemical staining for c-Fos in the nucleus accumbens and basolateral amygdala of the brain...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/28752007/importance-of-the-upper-extremity-position-for-a-safe-and-effective-axillary-block-a-comparative-study
#11
Ömür Öztürk, Aysu Hayriye Tezcan, Ali Bilge, Esref Erdem, Hatice Yağmurdur, Burhan Dost
OBJECTIVE: Our aim was to determine the ideal position of upper extremities during ultrasonography guidance for axillary block. The position that provides the shortest distance between the median and musculocutaneous nerves was assumed to be the most appropriate position for axillary block. METHODS: In this cross-sectional study, 120 (45 female and 75 male) patients were placed in a position with a shoulder at 90° / elbow 90° (position 1) and a shoulder 90° / elbow 0° (position 2)...
June 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/28749094/superiority-of-ultrasound-guided-shamrock-lumbar-plexus-block
#12
Martin V Nielsen, Thomas F Bendtsen, Jens Børglum
BACKGROUND: Ultrasound-guided lumbar plexus block performed with the Shamrock approach has received much interest since the technique was first described in 2013. The technique is believed to be faster and easier to perform and possibly safer in regards to potential complications compared with other lumbar plexus blocks. METHODS: In order to outline some favorable characteristics of the Shamrock lumbar plexus block, we performed an exhaustive search of the current literature; even though it is rather limited...
July 26, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28741118/strategies-to-decrease-injection-site-pain-in-botulinum-toxin-therapy
#13
Lejla Paracka, Katja Kollewe, Florian Wegner, Dirk Dressler
Botulinum toxin is now used for numerous indications including dystonias, spasticity, cerebral palsy, hyperhidrosis, cosmetics and chronic migraine. It has to be injected into its target tissues thus causing injection site pain. We wanted to compare the efficacy of various analgesic interventions suggested for reduction of injection site pain. In 13 healthy controls, pain thresholds in the fingertips II and III bilaterally were determined by the Mechanical Pain Threshold Test and the Repetitive Pain Stimulation Test at baseline and under nitrous oxide/oxygen, ice spray, local anaesthetic cream and forearm ischaemia...
July 24, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28737263/lidocaine-inhibits-the-proliferation-of-lung-cancer-by-regulating-the-expression-of-golt1a
#14
Lei Zhang, Rong Hu, Yanyong Cheng, Xiaoyang Wu, Siwei Xi, Yu Sun, Hong Jiang
OBJECTIVES: Lidocaine is the most commonly used local anaesthetic in clinical and can inhibit proliferation, suppress invasion and migration and induce apoptosis in human lung adenocarcinoma (LAD) cells. However, its specific downstream molecular mechanism is unclear. MATERIALS AND METHODS: LAD cell lines, A549 and H1299 cells, were treated with lidocaine. The proliferation was evaluated by the methylthiazolyldiphenyl-tetrazolium bromide (MTT) and bromodeoxyuridine (BrdU) assay...
July 24, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28736974/topical-sevoflurane-for-chronic-venous-ulcers-infected-by-multi-drug-resistant-organisms
#15
Adrián Imbernón-Moya, Francisco Javier Ortiz-de Frutos, Mónica Sanjuan-Alvarez, Isabel Portero-Sanchez, Raúl Merinero-Palomares, Victoria Alcazar
Several anaesthetic drugs have demonstrated antibacterial properties in vitro. Anaesthetics can primarily affect the cell wall of both susceptible and multi-resistant bacteria. They may also have a synergistic effect with conventional antibiotics through an unknown mechanism. We present three cases of a chronic venous ulcer infected by multi-resistant bacteria refractory to conventional systemic antibiotics, including Pseudomonas aeruginosa and methicillin-resistant Staphylococcus aureus (MRSA). Treatment with topical sevoflurane was performed for 1 month without systemic antibiotics...
July 23, 2017: International Wound Journal
https://www.readbyqxmd.com/read/28727180/why-was-a-local-anaesthetic-used-before-administering-intranasal-ketamine-for-paediatric-injuries
#16
Sabine Lemoine, Daniel Jost, Kilian Bertho, Jean Pierre Tourtier
We were very interested to read Scheier et al's brief report on the use of intranasal ketamine in their pediatric emergency department, specifically for pain and anxiety in children who had resisted venipuncture or intravenous placement (1). Intravenous access can be difficult for pre-hospital medical teams that are not specialised in paediatric care, namely when children complain of pain from, for example suspected fractures and burns. This article is protected by copyright. All rights reserved.
July 20, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28722246/delta-9-tetrahydrocannabinol-decreases-masticatory-muscle-sensitization-in-female-rats-through-peripheral-cannabinoid-receptor-activation
#17
H Wong, S Hossain, B E Cairns
BACKGROUND: This study investigated whether intramuscular injection of delta-9-tetrahydrocannabinol (THC), by acting on peripheral cannabinoid (CB) receptors, could decrease nerve growth factor (NGF)-induced sensitization in female rat masseter muscle; a model which mimics the symptoms of myofascial temporomandibular disorders. METHODS: Immunohistochemistry was used to explore the peripheral expression of cannabinoid receptors in the masseter muscle while behavioural and electrophysiology experiments were employed to assess the functional effects of intramuscular injection of THC...
July 18, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28720393/maxillary-nerve-blocks-in-horses-an-experimental-comparison-of-surface-landmark-and-ultrasound-guided-techniques
#18
Stephanie Stauffer, Beckie Cordner, Jonathon Dixon, Thomas Witte
OBJECTIVE: The aim of this preliminary proof-of-concept study was to evaluate and compare the success and complication rate of infiltration of the maxillary nerve of cadaver heads using previously described surface landmarks, standard ultrasound and a novel needle guidance positioning ultrasound system (SonixGPS). STUDY DESIGN: Prospective, anatomical, method-comparison study. ANIMALS: Thirty-eight equine cadaver heads. METHODS: Twenty-six veterinary students performed the three methods consecutively on cadaver heads using an 18 gauge, 8...
April 6, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28717545/low-dose-lignocaine-butorphanol-vs-low-dose-bupivacaine-for-spinal-anaesthesia-in-day-care-urological-surgeries-a-prospective-randomized-control-trial
#19
Shahil Rameshbhai Khant, Rajeev Chaudhari, Rishikesh Arun Kore, Shirish Bhagwat, Ranjan Purushottam Jakhalekar
OBJECTIVE: A local anaesthetic with fast onset, short and reliable duration of anaesthesia may be preferable for day care urological surgeries. Low dose lignocaine is believed to act faster and to have a shorter duration of action than low dose bupivacaine. Use of lignocaine for spinal anesthesia is discouraged now a days because of rare reports of transient neurological symptoms. The purpose of this study was to compare effectiveness and safety of low dose of lignocaine + butorphanol against low dose of bupivacaine for day care urological surgeries...
June 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28711309/influence-of-needle-bevel-design-on-injection-pain-and-needle-deformation-in-dental-local-infiltration-anaesthesia-randomized-clinical-trial
#20
M Dau, I Buttchereit, C Ganz, B Frerich, E N Anisimova, M Daubländer, P W Kämmerer
The aims of this in vivo study were to evaluate the impact of needle bevel design on patients' pain perception and the mechanical deformation of the needle tip after the injection. In a prospective single-blinded trial, 150 patients received conventional infiltration anaesthesia for dental treatment by one examiner. Patients were randomized for one out of three different needle bevel types (scalpel-designed bevel needle (SB), n=50; triple bevel needle (TB), n=50; regular bevel needle (RB), n=50). Subjects' self-reported injection pain perception was evaluated using a numeric rating scale (NRS)...
July 12, 2017: International Journal of Oral and Maxillofacial Surgery
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