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https://www.readbyqxmd.com/read/28320042/calcium-channel-modulation-as-a-target-in-chronic-pain-control
#1
REVIEW
Ryan Patel, Carlota Montagut-Bordas, Anthony H Dickenson
Neuropathic pain remains poorly treated for large numbers of patients and little progress has been made in developing novel classes of analgesics. To redress this issue, ziconotide (Prialt(TM) ) was developed and approved as a first in class synthetic version of ω-conotoxin MVIIA, a Cav 2.2 peptide blocker. Unfortunately, the impracticalities of intrathecal delivery, low therapeutic index and severe neurological side effects associated with ziconotide has restricted its use to exceptional circumstances. Ziconotide exhibits no state or use dependent block of Cav 2...
March 20, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28241453/synthesis-of-reusable-silica-nanosphere-supported-pt-iv-complex-for-formation-of-disulfide-bonds-in-peptides
#2
Xiaonan Hou, Xiaowei Zhao, Yamei Zhang, Aiying Han, Shuying Huo, Shigang Shen
Some peptide-based drugs, including oxytocin, vasopressin, ziconotide, pramlintide, nesiritide, and octreotide, contain one intramolecular disulfide bond. A novel and reusable monodispersed silica nanosphere-supported Pt(IV) complex (SiO₂@TPEA@Pt(IV)); TPEA: N-[3-(trimethoxysilyl)propyl]ethylenediamine) was synthesized via a four-step procedure and was used for the formation of intramolecular disulfide bonds in peptides. Transmission electron microscopy (TEM) and chemical mapping results for the Pt(II) intermediates and for SiO₂@TPEA@Pt(IV) show that the silica nanospheres possess a monodisperse spherical structure and contain uniformly-distributed Si, O, C, N, Cl, and Pt...
February 22, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28219625/a-novel-%C3%AE-conotoxin-from-worm-hunting-conus-tessulatus-that-selectively-inhibit-rat-ttx-resistant-sodium-currents
#3
Manyi Yang, Shuang Zhao, Xiaoli Min, Meiying Shao, Yongheng Chen, Zhuchu Chen, Maojun Zhou
μ-conotoxins are a group of marine Conus peptides that inhibit sodium currents, so μ-conotoxins are valuable in sodium channel research and new analgesic drug discovery. Here, a novel μ-conotoxin TsIIIA was identified from a worm-hunting Conus tessulatus. TsIIIA was chemical synthesized according to its amino acid sequence GCCRWPCPSRCGMARCCSS and identified by mass spectrum. Patch clamp on rat dorsal root ganglion cells showed that 10 μM TsIIIA specifically inhibit TTX-resistant sodium currents but has no effect on TTX-sensitive sodium currents...
February 17, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28195861/perioperative-management-of-a-patient-with-an-intrathecal-drug-delivery-device-infusing-ziconotide-a-case-report
#4
Sephalie Patel, Osama Hafez, Wade J Sexton, David A Edwards
Intrathecal ziconotide is used for the treatment of chronic pain and is delivered by an implanted drug delivery device. Anesthesiologists should be familiar with the perioperative management of the pump as well as the potential adverse events related to continued ziconotide infusion during general anesthesia. A case is presented demonstrating the perioperative management of an intrathecal drug delivery device infusing ziconotide in a patient presenting for radical cystectomy with pelvic lymphadenectomy and ileal conduit diversion...
February 15, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28162657/-412-patient-with-altered-mental-status-an-intrathecal-pump-and-an-unknown-dose-of-ziconotide
#5
K Noon, T Furnish
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28042906/the-polyanalgesic-consensus-conference-pacc-recommendations-for-trialing-of-intrathecal-drug-delivery-infusion-therapy
#6
REVIEW
Timothy R Deer, Salim M Hayek, Jason E Pope, Tim J Lamer, Maged Hamza, Jay S Grider, Steven M Rosen, Samir Narouze, Christophe Perruchoud, Simon Thomson, Marc Russo, Eric Grigsby, Daniel M Doleys, Marilyn S Jacobs, Michael Saulino, Paul Christo, Philip Kim, Elliot Marc Huntoon, Elliot Krames, Nagy Mekhail
INTRODUCTION: Intrathecal (IT) drug infusion is an appropriate and necessary tool in the algorithm to treat refractory cancer and noncancer pain. The decision-making steps/methodology for selecting appropriate patients for implanted targeted drug delivery systems is controversial and complicated. Therefore, a consensus on best practices for determining appropriate use of IT drug infusion may involve testing/trialing this therapy before implantation. METHODS: This current Polyanalgesic Consensus Conference (PACC) update was designed to address the deficiencies and emerging innovations since the previous PACC convened in 2012...
February 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28025375/intrathecal-therapy-for-cancer-related-pain
#7
REVIEW
Brian M Bruel, Allen W Burton
OBJECTIVE: The increasing incidence of cancer survivorship has shifted treatment of cancer-related pain from short-term analgesia to long-term chronic pain management. As a result, alternatives to oral analgesics, such as intrathecal therapy, may be beneficial for patients with cancer-related pain. The authors review the use of intrathecal therapy in the management of cancer-related pain. METHODS: The Medline database was searched for English-language articles that included "ziconotide" or "morphine" AND ("cancer" OR "malignant") AND "intrathecal" in title or abstract...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/27941483/perioperative-management-of-a-patient-with-an-intrathecal-drug-delivery-device-infusing-ziconotide
#8
Sephalie Patel, Osama Hafez, Wade J Sexton, David A Edwards
Intrathecal ziconotide is used for the treatment of chronic pain and is delivered by an implanted drug delivery device. Anesthesiologists should be familiar with the perioperative management of the pump as well as the potential adverse events related to continued ziconotide infusion during general anesthesia. A case is presented demonstrating the perioperative management of an intrathecal drug delivery device infusing ziconotide in a patient presenting for radical cystectomy with pelvic lymphadenectomy and ileal conduit diversion...
December 9, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/27771111/ziconotide-intrathecal-delivery-as-treatment-for-secondary-therapeutic-failure-of-motor-cortex-stimulation-after-6%C3%A2-years
#9
J Voirin, I Darie, D Fischer, A Simon, I Rohmer-Heitz, F Proust
INTRODUCTION: Motor cortex stimulation is a well-known treatment modality for refractory neuropathic pain. Nevertheless, some cases of therapeutic failure have been described but alternative therapies for these cases are rarely reported. CASE REPORT: The patient presented with neuropathic pain in his right arm due to a cervical syrinx which was surgically treated by a shunt in 2003 with no clinical improvement. As alternative therapy, after an evaluation by repetitive magnetic transcranial stimulation with significant benefit, motor cortex stimulation was successfully implanted in 2004...
October 2016: Neuro-Chirurgie
https://www.readbyqxmd.com/read/27492135/use-of-low-dose-ziconotide-as-first-line-intrathecal-monotherapy
#10
Julia Prusik, Charles Argoff, Sophia Peng, Julie G Pilitsis
BACKGROUND: Ziconotide use in intrathecal drug therapy (IDT) has been limited by dosing related side effects. We examine our experience with ziconotide as a first line IDT monotherapy in patients with chronic pain and present our low and slow dosing algorithm aimed at reducing these patient experienced side effects while adequately managing pain. METHODS: We retrospectively reviewed demographics, dosing, and outcomes of 15 consecutive patients with complete three-month data sets implanted with intrathecal pain pumps more than three years utilizing ziconotide as a first-line monotherapy...
August 5, 2016: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/27454282/intracerebroventricular-pain-treatment-with-analgesic-mixtures-including-ziconotide-for-intractable-pain
#11
Héléne Staquet, Denis Dupoiron, Edmond Nader, Philippe Menei
Intracerebroventricular (ICV) administration of opioids for control of intractable cancer pain has been used since 1982. We present here our experience of intracerebroventricular administration of pain treatments including ziconotide associated with morphine and ropivacaine for patients resistant to a conventional approach, with nociceptive, neuropathic, or mixed pain. These clinical cases were conducted with patients suffering from refractory pain, more than 6/10 on a numerical pain rating scale (NPRS) while on high-dose medical treatment and/or intolerance with significant side effects from oral medication...
July 2016: Pain Physician
https://www.readbyqxmd.com/read/27383588/transient-oxygen-glucose-deprivation-causes-a-delayed-loss-of-mitochondria-and-increases-spontaneous-calcium-signaling-in-astrocytic-processes
#12
John C O'Donnell, Joshua G Jackson, Michael B Robinson
UNLABELLED: Recently, mitochondria have been localized to astrocytic processes where they shape Ca(2+) signaling; this relationship has not been examined in models of ischemia/reperfusion. We biolistically transfected astrocytes in rat hippocampal slice cultures to facilitate fluorescent confocal microscopy, and subjected these slices to transient oxygen/glucose deprivation (OGD) that causes delayed excitotoxic death of CA1 pyramidal neurons. This insult caused a delayed loss of mitochondria from astrocytic processes and increased colocalization of mitochondria with the autophagosome marker LC3B...
July 6, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27371389/small-packages-big-returns-uncovering-the-venom-diversity-of-small-invertebrate-conoidean-snails
#13
J Gorson, M Holford
Venomous organisms used in research were historically chosen based on size and availability. This opportunity-driven strategy created a species bias in which snakes, scorpions, and spiders became the primary subjects of venom research. Increasing technological advancements have enabled interdisciplinary studies using genomics, transcriptomics, and proteomics to expand venom investigation to animals that produce small amounts of venom or lack traditional venom producing organs. One group of non-traditional venomous organisms that have benefitted from the rise of -omic technologies is the Conoideans...
November 2016: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/27125288/intrathecal-therapy-for-cancer-related-pain
#14
REVIEW
Brian M Bruel, Allen W Burton
OBJECTIVE: The increasing incidence of cancer survivorship has shifted treatment of cancer-related pain from short-term analgesia to long-term chronic pain management. As a result, alternatives to oral analgesics, such as intrathecal therapy, may be beneficial for patients with cancer-related pain. The authors review the use of intrathecal therapy in the management of cancer-related pain. METHODS: The Medline database was searched for English-language articles that included "ziconotide" or "morphine" AND ("cancer" OR "malignant") AND "intrathecal" in title or abstract...
April 28, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/26914961/clinical-uses-of-intrathecal-therapy-and-its-placement-in-the-pain-care-algorithm
#15
REVIEW
Jason E Pope, Timothy R Deer, Brian M Bruel, Steven Falowski
Intrathecal drug delivery is an effective treatment option for patients with severe chronic pain who have not obtained adequate analgesia from more conservative therapies (eg, physical therapy, systemic opioids, nonsteroidal anti-inflammatory drugs, antidepressants, and anticonvulsants). This review focuses on, but is not limited to, the 2 agents currently approved by the U.S. Food and Drug Administration for intrathecal analgesia: preservative-free morphine and ziconotide (a nonopioid, selective N-type calcium channel blocker)...
February 23, 2016: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/26861472/ziconotide-monotherapy-a-systematic-review-of-randomised-controlled-trials
#16
REVIEW
Morag E Brookes, Sam Eldabe, Alan Batterham
INTRODUCTION: Chronic neuropathic pain is difficult to treat and is often refractory to most modalities of treatment. Ziconotide is a novel, potent, non-opioid, calcium channel blocking agent which has been shown in clinical trials to be effective in treating chronic neuropathic pain. METHODS: EMBASE, MEDLINE, CINAHL Plus and Web of Science electronic databases were searched for English language studies. Reference sections of articles were examined for further papers and the manufacturer of ziconotide was contacted for further unpublished data...
2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/26861471/the-pharmacology-of-spinal-opioids-and-ziconotide-for-the-treatment-of-non-cancer-pain
#17
REVIEW
J E Pope, T R Deer, K Amirdelfan, W P McRoberts, N Azeem
BACKGROUND: Intrathecal drug delivery has undergone a revitalization following a better understanding of this delivery route and its pharmacokinetics. Driven by patient safety and outcomes, clinicians are motivated to rethink the traditional spinal infusion pump patient selection criteria and indications. We review the current understanding of the pharmacology of commonly employed intrathecal agents and the clinical relevance. METHODS: Search strategies for data acquisition included Medline database, PubMed, Google scholar, along with international and national professional meeting content, with key words including pharmacology of opioids, intrathecal therapy, ziconotide, pharmacokinetics, and intrathecal drug delivery...
2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/26856969/intrathecal-ziconotide-dosing-and-administration-strategies-in-patients-with-refractory-chronic-pain
#18
REVIEW
Gladstone C McDowell, Jason E Pope
INTRODUCTION: Ziconotide is a non-opioid analgesic for intrathecal (IT) administration. The aim of this review is to provide a comprehensive and clinically relevant summary of the literature on dosing and administration with IT ziconotide in the management of refractory chronic pain, and to describe novel dosing strategies intended to improve clinical outcomes. MATERIALS AND METHODS: A Medline search was conducted for "ziconotide," supplemented by manual searching of published bibliographies and abstracts from conferences...
July 2016: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/26712769/new-drugs-from-marine-organisms-in-alzheimer-s-disease
#19
REVIEW
Patrizia Russo, Aliaksei Kisialiou, Palma Lamonaca, Rossana Moroni, Giulia Prinzi, Massimo Fini
Alzheimer's disease (AD) is a multifactorial neurodegenerative disorder. Current approved drugs may only ameliorate symptoms in a restricted number of patients and for a restricted period of time. Currently, there is a translational research challenge into identifying the new effective drugs and their respective new therapeutic targets in AD and other neurodegenerative disorders. In this review, selected examples of marine-derived compounds in neurodegeneration, specifically in AD field are reported. The emphasis has been done on compounds and their possible relevant biological activities...
December 25, 2015: Marine Drugs
https://www.readbyqxmd.com/read/26609309/dual-effect-of-ziconotide-in-primary-erythromelalgia
#20
Rosario Russo, Maria Cristina Caroleo, Erika Cione, Mariarita Perri, Maria Teresa Paparo, Antonio Russo
Erythromelalgia (EM) is a rare disabling clinical syndrome more commonly known to affect the lower extremities. There is no single effective treatment for this disease that often requires a multidisciplinary approach. Herein, we report the case of a 31-year-old woman affected by primary erythromelalgia who was successfully treated with intrathecal Ziconotide. We also observed an unexpected result following therapy with Ziconotide. The legs and feet of the patient that at the time of admission were swollen and tumefied dramatically improved after one week of the drug administration...
2015: Case Reports in Medicine
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