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https://www.readbyqxmd.com/read/28486926/5-ht3-receptors-a-potential-therapeutic-target-for-epilepsy
#1
Hongyan Zhao, Pu Wang, Shurui Chen, Xin Li, Hongliang Huo
Epilepsy is a syndrome of brain dysfunction caused by spontaneous, abnormal discharge. Many anti-epileptic drugs have developed in past decades. 5-HT is an important neurotransmitter in the central and peripheral nervous system of the human body which is involved in a number of physiological activities, such as sensation, movement, and behavior. 5-HT subtype have been divided into seven sub-groups from 5-HT1 to 5HT7. An increasing number of studies have shown that the activation of the 5-HT3 receptor can inhibit epileptic seizures, while inhibition of the 5HT3 receptor can promote spike waves...
May 8, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28439104/a-novel-5ht3-receptor-igf1-mechanism-distinct-from-ssri-induced-antidepressant-effects
#2
M Kondo, Y Koyama, Y Nakamura, S Shimada
Depression is a common mental disorder affecting around 350 million people worldwide. Although selective serotonin reuptake inhibitors (SSRIs) are the most widely used antidepressants, a significant proportion of depressed patients do not achieve remission with SSRIs. In this study, we show that a serotonin type 3 receptor (5HT3R) agonist induces antidepressant effects as well as hippocampal neurogenesis independent of fluoxetine (a commonly used SSRI). Notably, our histological analysis reveals that 5HT3R and insulin-like growth factor 1 (IGF1) are expressed in the same neurons in the subgranular zone of the hippocampal dentate gyrus...
April 25, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28249542/prophylaxis-of-radiation-induced-nausea-and-vomiting-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#3
Wing S Li, Joanne M van der Velden, Vithusha Ganesh, Sherlyn Vuong, Srinivas Raman, Marko Popovic, Henry Lam, Kam H Wong, Roger K Ngan, J P Maarten Burbach, Carlo DeAngelis, Rachel McDonald Xxxx, Edward Chow
BACKGROUND: The aim of this article was to systematically review the efficacy and safety of various antiemetics in prophylaxis of radiation-induced nausea and vomiting (RINV). METHODS: A literature search of Ovid MEDLINE, EMBASE and Cochrane CENTRAL was performed to identify randomized controlled trials (RCTs) that evaluated the efficacy of prophylaxis for RINV in patients receiving radiotherapy to abdomen/pelvis, including total body irradiation (TBI). Primary endpoints were complete control of nausea and complete control of vomiting during acute and delayed phases...
January 9, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/28191518/corticosteroids-the-oldest-agent-in-the-prevention-of-chemotherapy-induced-nausea-and-vomiting-what-about-the-guidelines
#4
Florence Van Ryckeghem
Chemotherapy-induced nausea and vomiting (CINV) remains one of the most disturbing side effects of cancer treatment. Research in antiemetic therapy has progressed gradually since the early eighties, and the development of antiemetic agents continues. This review focuses on the current management of CINV based on the most recent guidelines, and adherence to the latter is examined more carefully. Setrons (5HT3 receptor antagonists), corticosteroids, and NK-1 receptor antagonists are the cornerstones of antiemetic therapy...
April 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28152868/compliance-with-national-comprehensive-cancer-network-guidelines-for-antiemesis-in-cisplatin-regimens
#5
Dana Ann Little
280 Background: The members of a network of community cancer centers affiliated with an academic medical center report following National Comprehensive Cancer Network (NCCN) guidelines. To determine guideline compliance, cisplatin regimens were audited. Cisplatin was selected because of its wide use, high emetic potential, and the impact on QOL for patients with unmanaged nausea and vomiting.The community cancer centers affiliated with an academic medical center report following National Comprehensive Cancer Network (NCCN) guidelines for treatment plans...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/27894202/rolapitant-for-the-prevention-of-delayed-nausea-and-vomiting-over-initial-and-repeat-courses-of-emetogenic-chemotherapy
#6
REVIEW
Bernardo Rapoport, Ronwyn van Eeden, Teresa Smit
Chemotherapy-induced nausea and vomiting (CINV) is a debilitating side effect of many cytotoxic chemotherapy regimens. Although sustained antiemetic control across repeated chemotherapy cycles is important for cancer treatment continuation, few studies have investigated the efficacy of antiemetic prophylaxis over multiple chemotherapy cycles. Areas covered: Here we discuss the use of antiemetic hydroxytryptamine type 3 (5-HT3) receptor and neurokinin (NK)-1 receptor antagonists for prevention of CINV, limiting our review to clinical trials in the context of multiple-cycle chemotherapy, with a focus on the NK-1 receptor antagonist rolapitant...
January 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/27891523/5ht3-antagonists-versus-dexamethasone-in-the-prevention-of-ponv-in-patients-undergoing-laparoscopic-cholecystectomy-a-meta-analysis-of-rcts
#7
REVIEW
Chengmao Zhou, Yu Zhu, Zhen Liu, Lin Ruan
Background. 5HT3 antagonist, an antiemetic alternative to dexamethasone, is an effective drug for the prevention of postoperative nausea and vomiting (PONV). Methods. PubMed and The Cochrane Library (from inception to June 2016) were searched for relevant RCTs (randomized controlled trials). Results. Seven trials, totaling 682 patients, were included in this meta-analysis. This meta-analysis demonstrated that 5HT3 antagonist was as effective as dexamethasone in preventing PONV (RR, 1.12; 95% CI, [0.86, 1.45]; P = 0...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27717882/pain-modulation-from-the-brain-during-diabetic-neuropathy-uncovering-the-role-of-the-rostroventromedial-medulla
#8
Marta Silva, José Tiago Costa-Pereira, Daniel Martins, Isaura Tavares
Diabetic neuropathy has a profound impact in the quality of life of patients who frequently complain of pain. The mechanisms underlying diabetic neuropathic pain (DNP) are no longer ascribed only to damage of peripheral nerves. The effects of diabetes at the central nervous system are currently considered causes of DPN. Management of DNP may be achieved by antidepressants that act on serotonin (5-HT) uptake, namely specific serotonin reuptake inhibitors. The rostroventromedial medulla (RVM) is a key pain control center involved in descending pain modulation at the spinal cord through local release of 5-HT and plays a peculiar role in the balance of bidirectional control (i...
October 4, 2016: Neurobiology of Disease
https://www.readbyqxmd.com/read/27572335/2016-updated-mascc-esmo-consensus-recommendations-controlling-nausea-and-vomiting-with-chemotherapy-of-low-or-minimal-emetic-potential
#9
Ian Olver, Christina H Ruhlmann, Franziska Jahn, Lee Schwartzberg, Bernardo Rapoport, Cynthia N Rittenberg, Rebecca Clark-Snow
PURPOSE: The purpose of this review is to update the MASCC (Multinational Association of Supportive Care in Cancer) guidelines for controlling nausea and vomiting with chemotherapy of low or minimal emetic potential. METHODS: The antiemetic study group of MASCC met in Copenhagen in 2015 to review the MASCC antiemetic guidelines. A subgroup performed a systematic literature review on antiemetics for low emetogenic chemotherapy (LEC) and chemotherapy of minimal emetic potential and the chair presented the update recommendation to the whole group for discussion...
January 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/27511837/control-of-sensory-neuron-excitability-by-serotonin-involves-5ht2c-receptors-and-ca-2-activated-chloride-channels
#10
Isabella Salzer, Enkhbileg Gantumur, Arsalan Yousuf, Stefan Boehm
Serotonin (5HT) is a constituent of the so-called "inflammatory soup" that sensitizes nociceptors during inflammation. Nevertheless, receptors and signaling mechanisms that mediate an excitation of dorsal root ganglion (DRG) neurons by 5HT remained controversial. Therefore, capsaicin-sensitive nociceptive neurons dissociated from rat DRGs were used to investigate effects of 5HT on membrane excitability and currents through ligand- as well as voltage-gated ion channels. In 58% of the neurons tested, 5HT increased action potential firing, an effect that was abolished by the 5HT2 receptor antagonist ritanserin, but not by the 5HT3 antagonist tropisetron...
November 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27392819/mechanosensitive-ion-channel-piezo2-is-important-for-enterochromaffin-cell-response-to-mechanical-forces
#11
Fan Wang, Kaitlyn Knutson, Constanza Alcaino, David R Linden, Simon J Gibbons, Purna Kashyap, Madhusudan Grover, Richard Oeckler, Philip A Gottlieb, Hui Joyce Li, Andrew B Leiter, Gianrico Farrugia, Arthur Beyder
KEY POINTS: The gastrointestinal epithelial enterochromaffin (EC) cell synthesizes the vast majority of the body's serotonin. As a specialized mechanosensor, the EC cell releases this serotonin in response to mechanical forces. However, the molecular mechanism of EC cell mechanotransduction is unknown. In the present study, we show, for the first time, that the mechanosensitive ion channel Piezo2 is specifically expressed by the human and mouse EC cells. Activation of Piezo2 by mechanical forces results in a characteristic ionic current, the release of serotonin and stimulation of gastrointestinal secretion...
January 1, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/27334131/efficacy-benefit-of-an-nk1-receptor-antagonist-nk1ra-in-patients-receiving-carboplatin-supportive-evidence-with-nepa-a-fixed-combination-of-the-nk1-ra-netupitant-and-palonosetron-and-aprepitant-regimens
#12
Karin Jordan, Richard Gralla, Giada Rizzi, Kimia Kashef
PURPOSE: Antiemetic guideline recommendations are inconsistent as to whether a neurokinin-1 receptor antagonist (NK1 RA) should be administered with a 5-hydroxytryptamine-3 (5HT3) RA + dexamethasone (DEX) in patients receiving carboplatin. Patients receiving cisplatin routinely receive an NK1 RA-containing regimen with a resulting 14-22 % benefit in no emesis rates over a 5-HT3 RA/DEX control. Recent studies suggest a similar benefit in patients receiving carboplatin. NEPA is the first fixed antiemetic combination agent and comprises the highly selective NK1 RA, netupitant, and pharmacologically distinct 5-HT3 RA, palonosetron (PALO)...
November 2016: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/27298498/effect-of-drugs-modulating-serotonergic-system-on-the-analgesic-action-of-paracetamol-in-mice
#13
Yogita S Karandikar, Peeyush Belsare, Aditi Panditrao
OBJECTIVE: The underlying mechanisms for the analgesic action of paracetamol (PCT) are still under considerable debate. It has been recently proposed that PCT may act by modulating the Serotonin system. This study was conducted to verify the influence of Serotonin modulating drugs (buspirone, ondansetron, and fluoxetine) on the analgesic effect of PCT. MATERIALS AND METHODS: Thirty adult albino mice were assigned to five groups: Normal saline, PCT, fluoxetine selective serotonin reuptake inhibitor (SSRI) + PCT, buspirone (5-HT1A Agonist) + PCT, and ondansetron (5HT3 antagonist) + PCT...
May 2016: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/27178880/-region-wide-professional-practice-evaluation-with-regards-to-antiemetic-prescription-into-chemotherapy-induced-nausea-and-vomiting
#14
Jérôme Tavernier, Mireille Jouannet-Romaszko, Helena Bertucat, Nathalie Marchiset, Mohum Bahadoor, Régine Chevrier
The anticancer drug technical commission (COTECH) of the Auvergne OMEDIT has set up a region-wide professional practice evaluation (PPE) with regards to antiemetic prescription practices in chemotherapy-induced nausea and vomiting (CINV), in order to evaluate their compliance with OMEDIT's guidelines. Are not included pediatric and hematologic protocols. A prospective survey was carried from November 2013 to January 2014 out in 14 medical centers in Auvergne. This clinical audit was based on the HAS (national healthcare authority) framework and used as a reference regional standards based on the MASCC Antiemetic Guidelines...
July 2016: Bulletin du Cancer
https://www.readbyqxmd.com/read/27143244/cardiotoxicity-of-antiemetic-drugs-in-oncology-an-overview-of-the-current-state-of-the-art
#15
REVIEW
Sandro Barni, Fausto Petrelli, Mary Cabiddu
PURPOSE: Cardiac complications in cancer patients have been a significant medical problem in the last few years. Cardiosafety profile of most novel approved drugs, in cancer patients, is required by regulatory authorities. Risk of proarrhythmic effect associated with a new drug, in fact, is usually evaluated with specific studies conducted in agreement with ICHE14 guidelines. In this overview, we detailed the cardio safety profile of antiemetic drugs. In particular, we focused on data of 5HT3-RA drugs used for prevention of chemotherapy-induced nausea and vomiting in the oncology setting...
June 2016: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/26979154/differential-effects-of-a-short-term-high-fat-diet-in-an-animal-model-of-depression-in-rats-treated-with-the-5-ht3-receptor-antagonist-ondansetron-the-5-ht3-receptor-agonist-2-methyl-5-ht-and-the-ssri-fluoxetine
#16
Isabel C Sumaya, Dee Bailey, Susan L Catlett
Investigation into the effects of a high-fat diet on depression in the context of 5-HT3 receptor function is important given 5-HT3 antagonism may represent a novel candidate for drug discovery. To more fully understand the relationship between the 5-HT3 receptor system, depression, and high-fat intake, our main interest was to study the short-term effects of a high-fat diet on the 5-HT3 receptor antagonist, ondansetron, and the 5-HT3 receptor agonist, 2-methyl-5-HT, as well as the SSRI, fluoxetine, in an animal model of depression...
May 2016: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/26976353/5ht3-receptors-target-for-new-antidepressant-drugs
#17
REVIEW
Deepali Gupta, Visakh Prabhakar, Mahesh Radhakrishnan
5HT3 receptors (5HT3Rs) have long been identified as a potential target for antidepressants. Several studies have reported that antagonism of 5HT3Rs produces antidepressant-like effects. However, the exact role of 5HT3Rs and the mode of antidepressant action of 5HT3R antagonists still remain a mystery. Here, we provide a comprehensive overview of 5HT3Rs: (a) regional and subcellular distribution of 5HT3Rs in discrete brain regions, (b) preclinical and clinical evidence supporting the antidepressant effect of 5HT3R antagonists, and (c) neurochemical, biological and neurocellular signaling pathways associated with the antidepressant action of 5HT3R antagonists...
May 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/26922897/mirtazapine-prevents-induction-and-expression-of-cocaine-induced-behavioral-sensitization-in-rats
#18
Alberto Salazar-Juárez, Susana Barbosa-Méndez, Noe Jurado, Ricardo Hernández-Miramontes, Philippe Leff, Benito Antón
Cocaine abuse is a major health problem worldwide. Treatment based on both 5-HT2A/C and 5-HT3 receptor antagonists attenuate not only the effects of cocaine abuse but also the incentive/motivational effect related to cocaine-paired cues. Mirtazapine, an antagonist of postsynaptic α2-adrenergic, 5-HT2A/C and 5HT3 receptors and inverse agonist of the 5-HT2C receptor, has been shown to effectively modify, at the preclinical and clinical levels, various behavioral alterations induced by drugs abuse. Therefore, it is important to assess whether chronic dosing of mirtazapine alters locomotor effects of cocaine as well as induction and expression of cocaine sensitization...
July 4, 2016: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/26904173/the-role-of-hippocampal-5ht3-receptors-in-harmaline-induced-memory-deficit
#19
Mohammad Nasehi
INTRODUCTION: The plethora of studies indicated that there is a cross talk relationship between harmaline and serotonergic (5-HT) system on cognitive and non-cognitive behaviors. Thus, the purpose of this study is to assess the effects of hippocampal 5-HT4 receptor on memory acquisition deficit induced by harmaline. METHODS: Harmaline was injected peritoneally, while 5-HT4 receptor agonist (RS67333) and antagonist (RS23597-190) were injected intra-hippocampal. A single-trial step-down passive avoidance, open field and tail flick tasks were used for measurement of memory, locomotor activity and pain responses, respectively...
July 2015: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/26875197/clinical-practices-and-outcomes-on-chemotherapy-induced-nausea-and-vomiting-management-in-south-korea-comparison-with-asia-pacific-data-of-the-pan-australasian-chemotherapy-induced-emesis-burden-of-illness-study
#20
Myung Ah Lee, Eun Kyung Cho, Sung Yong Oh, Joong Bae Ahn, Ji Yun Lee, Burke Thomas, Hun Jung, Jong Gwang Kim
PURPOSE: This study reported patient outcomes of chemotherapy-induced nausea and vomiting (CINV) prophylaxis for highly emetogenic chemotherapy (HEC) and moderately emetogenic chemotherapy (MEC) regimens and evaluated its adherence to acute-phase CINV prophylaxis in the Korean population subset of the Pan Australasian Chemotherapy Induced Emesis burden of illness (PrACTICE) study. MATERIALS AND METHODS: This subgroup analysis evaluated 158 Korean patients receiving HEC or MEC and compared the data (wherever possible) with that of 648 patients from the Asia-Pacific (AP) region...
October 2016: Cancer Research and Treatment: Official Journal of Korean Cancer Association
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