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Drug withdrawal

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https://www.readbyqxmd.com/read/29334653/depletion-study-withdrawal-period-calculation-and-bioaccumulation-of-sulfamethazine-in-tilapia-oreochromis-niloticus-treated-with-medicated-feed
#1
Kátia S D Nunes, José H Vallim, Márcia R Assalin, Sonia C N Queiroz, Lourival C Paraíba, Claudio M Jonsson, Felix G R Reyes
The residue depletion of sulfamethazine (SMZ) was evaluated in tilapia (Oreochromis niloticus) after 11 days of administration of medicated feed containing SMZ, at the dose of 422 mg/kg body weight (bw). The determination of SMZ in feed and tilapia fillet was carried out using the QuEChERS approach for sample preparation, and high performance liquid chromatography with diode array detector (HPLC-DAD) and ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QToF-MS) for quantitation, respectively...
January 9, 2018: Chemosphere
https://www.readbyqxmd.com/read/29330156/application-of-receptor-theory-to-the-design-and-use-of-fixed-proportion-mu-opioid-agonist-and-antagonist-mixtures-in-rhesus-monkeys
#2
Jeremy C Cornelissen, Samuel Obeng, Kenner C Rice, Yan Zhang, S Stevens Negus, Matthew Banks
Receptor theory predicts that fixed-proportion mixtures of a competitive, reversible agonist (e.g. fentanyl) and antagonist (e.g. naltrexone) at a common receptor (e.g. mu opioid receptors; MOR) will result in antagonist proportion-dependent decreases in apparent efficacy of the mixtures and downward shifts in mixture dose-effect functions. The present study tested this hypothesis by evaluating behavioral effects of fixed-proportion fentanyl/naltrexone mixtures in a warm-water tail-withdrawal procedure in rhesus monkeys (n=4)...
January 12, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29330112/macrochimerism-and-clinical-transplant-tolerance
#3
REVIEW
John D Scandling, Stephan Busque, Robert Lowsky, Judith Shizuru, Asha Shori, Edgar Engleman, Kent Jensen, Samuel Strober
Current theory holds that macrochimerism is essential to the development of transplant tolerance. Hematopoietic cell transplantation from the solid organ donor is necessary to achieve macrochimerism. Over the last 10 to 20 years, trials of tolerance induction with combined kidney and hematopoietic cell transplantation have moved from the preclinical to the clinical arena. The achievement of macrochimerism in the clinical setting is challenging, and potentially toxic due to the conditioning regimen necessary to hematopoietic cell transplantation and due to the risk of graft-versus-host disease...
January 9, 2018: Human Immunology
https://www.readbyqxmd.com/read/29329627/comparative-efficacy-of-curcumin-and-paromomycin-against-cryptosporidium-parvum-infection-in-a-balb-c-model
#4
Mohammad Asadpour, Fatemeh Namazi, Seyed Mostafa Razavi, Saeed Nazifi
Cryptosporidium is a ubiquitous protozoan parasite causing gastrointestinal disorder in various hosts worldwide. The disease is self-limiting in the immunocompetent but life-threatening in immunodeficient individuals. Investigations to find an effective drug for the complete elimination of the Cryptosporidium infection are ongoing and urgently needed. The current study was undertaken to examine the anti-cryptosporidial efficacy of curcumin in experimentally infected mice compared with that of paromomycin. Oocysts were isolated from a pre-weaned dairy calf and identified as Cryptosporidium parvum using a nested- polymerase chain reaction (PCR) on Small subunit ribosomal ribonucleic acid (SSU rRNA) gene and sequencing analysis...
January 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29329518/the-use-of-eculizumab-in-gemcitabine-induced-thrombotic-microangiopathy
#5
Vinod Krishnappa, Mohit Gupta, Haikoo Shah, Abhijit Das, Natthavat Tanphaichitr, Robert Novak, Rupesh Raina
BACKGROUND: Thrombotic microangiopathy (TMA) secondary to gemcitabine therapy (GiTMA) is a very rare pathology that carries a poor prognosis, with nearly half of the cases progressing to end stage renal disease. GiTMA is most commonly associated with adenocarcinomas, most notably pancreatic cancers. The mainstay of management is withdrawal of the offending drug and supportive care. Plasmapheresis has a limited role and hemodialysis may help in the management of fluid overload secondary to renal failure...
January 12, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29324507/determining-when-to-stop-antiepileptic-drug-treatment
#6
Steven C Schachter
PURPOSE OF REVIEW: As the number of patients diagnosed with epilepsy continues to rise and the pharmacological and device-based treatment options for epilepsy increase, determining when to stop antiepileptic drug (AED) treatment continues to be an important issue for patient management and counseling. RECENT FINDINGS: This review focuses on outcomes following AED withdrawal in seizure-free adults with epilepsy. Practical considerations are also discussed because, despite the importance of this topic, relatively little progress has been made in the past year regarding the identification of patients whose risk for recurrent seizures after AED withdrawal is no higher than that of the general population...
January 10, 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29324401/unblinded-randomized-multicenter-trial-comparing-lamotrigine-and-valproate-combination-with-controlled-release-carbamazepine-monotherapy-as-initial-drug-regimen-in-untreated-epilepsy
#7
Byung In Lee, Soon Kee No, Sang-Doe Yi, Hyang Woon Lee, Ok Joon Kim, Sang Ho Kim, Myeong Kyu Kim, Sung Eun Kim, Yo Sik Kim, Jae Moon Kim, Se-Jin Lee, Dong Jin Shin, Sung Pa Park, Yeong In Kim, Kyoung Heo, Yong Won Cho, Yang-Je Cho, Youn Nam Kim
PURPOSE: To compare controlled-release carbamazepine monotherapy (CBZ-CR) with lamotrigine and valproate combination therapy (LTG + VPA) in equivalent total drug load, as initial drug regimen in untreated patients with partial and/or generalized tonic-clonic seizures (GTCS). METHODS: This unblinded, randomized, 60-week superiority trial recruited patients having two or more unprovoked seizures with at least one seizure during previous three months. After randomization into CBZ-CR or LTG + VPA, patients entered into eight-week titration phase (TP), followed by 52-week maintenance phase (MP)...
December 29, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29322880/reversible-splenial-lesion-syndrome-due-to-oxcarbazepine-withdrawal-case-report-and-literature-review
#8
Chaoyang Jing, Lichao Sun, Zhuo Wang, Chaojia Chu, Weihong Lin
Background Reversible splenial lesion syndrome is a distinct entity radiologically characterized by a reversible lesion in the splenium of the corpus callosum. According to previous reports, this condition may be associated with antiepileptic drug use or withdrawal. We herein report a case of reversible splenial lesion syndrome associated with oxcarbazepine withdrawal. Case Report A 39-year-old man presented with an 8-year history of epileptic seizures. During the previous 3 years, he had taken oxcarbazepine irregularly...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29320822/antimalarial-activity-of-c-10-substituted-triazolyl-artemisinin
#9
Gab-Man Park, Hyun Park, Sangtae Oh, Seokjoon Lee
We synthesized C-10 substituted triazolyl artemisinins by the Huisgen cycloaddition reaction between dihydroartemisinins (2) and variously substituted 1, 2, 3-triazoles (8a-8h). The antimalarial activities of 32 novel artemisinin derivatives were screened against a chloroquine-resistant parasite. Among them, triazolyl artemisinins with electron-withdrawing groups showed stronger antimalarial activities than those shown by the derivatives having electron-donating groups. In particularly, m-chlorotriazolyl artemisinin (9d-12d) showed antimalarial activity equivalent to that of artemisinin and could be a strong drug candidate...
December 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29317954/a-multiple-treatment-comparison-of-eleven-disease-modifying-drugs-used-for-multiple-sclerosis
#10
Vida Hamidi, Elisabeth Couto, Tove Ringerike, Marianne Klemp
Background: Several disease-modifying drug therapies are available for the treatment of multiple sclerosis (MS). To ensure the most appropriate MS management, we assessed the effectiveness and cost-effectiveness of the disease-modifying medicines used for MS. Methods: We conducted a systematic review including 11 disease-modifying drugs used for treatment of adult patients diagnosed with relapsing-remitting MS. We performed a network meta-analysis using both direct and indirect evidence...
February 2018: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29317396/pregabalin-as-adjunctive-therapy-in-benzodiazepine-discontinuation
#11
Kaylee Caniff, Emily Telega, Jolene R Bostwick, Kristen N Gardner
PURPOSE: The available evidence for the use of pregabalin as adjunctive therapy in the discontinuation of benzodiazepines is reviewed. SUMMARY: Pregabalin has been studied as an adjunctive pharmacologic treatment for the discontinuation of long-term benzodiazepine use. Unlike carbamazepine, pregabalin has little potential for drug interactions, and its adverse effects are mostly mild and transient. Pregabalin reduces the release of excitatory neurotransmitters by binding to regulatory subunits of voltage-activated calcium channels...
January 15, 2018: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/29315084/safety-of-reiki-therapy-for-newborns-at-risk-for-neonatal-abstinence-syndrome
#12
Rosanne Marie Radziewicz, Sandra Wright-Esber, Julie Zupancic, Deb Gargiulo, Patricia Woodall
The incidence of opioid abuse and subsequent drug withdrawal is exponentially on the rise in the United States for many populations including newborns who are born to drug-addicted mothers. These newborns often exhibit symptoms of neonatal abstinence syndrome (NAS) within 24 to 72 hours of birth. Treatment of NAS includes monitoring of withdrawal symptoms, managing physiological parameters, and the use of supportive and pharmacologic treatments. Although a few randomized controlled trials exist, studies on supportive intervention are generally limited by small sample sizes, case study reports, expert opinions, and descriptive design...
January 8, 2018: Holistic Nursing Practice
https://www.readbyqxmd.com/read/29314518/adult-consequences-of-prenatal-drug-exposure
#13
Ju Lee Oei
Maternal drug use is not new but over the last few decades, the number of mothers using drugs of addiction has escalated to epidemic levels. These drugs are both legal (e.g. prescription medication) and illegal (e.g. heroin) and all will cross the placental barrier into the developing infant. The most immediate and obvious consequence of intra-uterine drug exposure is newborn withdrawal or the Neonatal Abstinence Syndrome (NAS) which is now, with prompt recognition and treatment, an uncommon cause of neonatal death...
January 2018: Internal Medicine Journal
https://www.readbyqxmd.com/read/29313652/lung-cancer-smoking-cessation
#14
Kelly M Latimer
Smoking cessation for patients who smoke should be a top priority for physicians. Nicotine dependence should be considered a chronic disease, with the expectation that relapse is normal. The US Preventive Services Task Force (USPSTF) recommends that physicians screen all adults for tobacco use, advise them to stop using tobacco, and provide behavioral interventions and Food and Drug Administration-approved pharmacotherapy for cessation to adults who use tobacco. It also recommends use of the 5 As (ie, Ask, Advise, Assess, Assist, Arrange) in discussing tobacco use with patients...
January 2018: FP Essentials
https://www.readbyqxmd.com/read/29310899/efficacy-safety-and-tolerability-of-dolutegravir-rilpivirine-for-the-maintenance-of-virological-suppression-in-adults-with-hiv-1-phase-3-randomised-non-inferiority-sword-1-and-sword-2-studies
#15
Josep M Llibre, Chien-Ching Hung, Cynthia Brinson, Francesco Castelli, Pierre-Marie Girard, Lesley P Kahl, Elizabeth A Blair, Kostas Angelis, Brian Wynne, Kati Vandermeulen, Mark Underwood, Kim Smith, Martin Gartland, Michael Aboud
BACKGROUND: Lifelong HIV antiretroviral therapy (ART) has prompted an interest in two-drug regimens to minimise cumulative drug exposure and toxicities. The safety, tolerability, and efficacy of dolutegravir and rilpivirine suggest potential compatibility and effectiveness as a two-drug regimen. We aimed to investigate this two-drug regimen in a phase 3 study. METHODS: We identically designed SWORD-1 and SWORD-2, which were open-label, parallel-group, multicentre, phase 3, randomised, non-inferiority studies in 12 countries evaluating efficacy and safety of once-daily dolutegravir 50 mg plus rilpivirine 25 mg versus current ART regimen (CAR)...
January 5, 2018: Lancet
https://www.readbyqxmd.com/read/29309877/development-of-a-mechanistic-biokinetic-model-for-hepatic-bile-acid-handling-to-predict-possible-cholestatic-effects-of-drugs
#16
Sylvia Notenboom, Karl M Weigand, Johannes H Proost, Marola M van Lipzig, Evita van de Steeg, Petra H H van den Broek, Rick Greupink, Frans G M Russel, Geny M M Groothuis
Drug-induced liver injury (DILI) is a common reason for drug withdrawal from the market. An important cause of DILI is drug-induced cholestasis. One of the major players involved in drug-induced cholestasis is the bile salt efflux pump (BSEP; ABCB11). Inhibition of BSEP by drugs potentially leads to cholestasis due to increased (toxic) intrahepatic concentrations of bile acids with subsequent cell injury. In order to investigate the possibilities for in silico prediction of cholestatic effects of drugs, we developed a mechanistic biokinetic model for human liver bile acid handling populated with human in vitro data...
January 5, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29302219/individual-differences-in-the-neuropsychopathology-of-addiction
#17
Olivier George, George F Koob
Drug addiction or substance-use disorder is a chronically relapsing disorder that progresses through binge/intoxication, withdrawal/negative affect and preoccupation/anticipation stages. These stages represent diverse neurobiological mechanisms that are differentially involved in the transition from recreational to compulsive drug use and from positive to negative reinforcement. The progression from recreational to compulsive substance use is associated with downregulation of the brain reward systems and upregulation of the brain stress systems...
September 2017: Dialogues in Clinical Neuroscience
https://www.readbyqxmd.com/read/29301614/metabotropic-glutamate-receptors-2-and-3-as-targets-for-treating-nicotine-addiction
#18
REVIEW
Alan J Cross, Robert Anthenelli, Xia Li
Tobacco smoking, driven by the addictive properties of nicotine, continues to be a worldwide health problem. Based on the well-established role of glutamatergic neurotransmission in drug addiction, novel medication development strategies seek to halt nicotine consumption and prevent relapse to tobacco smoking by modulating glutamate transmission. The presynaptic inhibitory metabotropic glutamate receptors 2 and 3 (mGluR2/3) are key autoreceptors on glutamatergic terminals that maintain glutamate homeostasis...
November 21, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/29301410/factors-influencing-the-potency-of-alzheimer-inhibitors-computational-and-docking-studies
#19
Faten Atlam, Mohamed Awad, Rehab Salama
Density functional theory (B3LYP/6-31G [d]) is performed to study the effect of molecular and electronic structures of the investigated β-secretase 1 (BACE1) Alzheimer's inhibitors on their biological activities and discuss the correlation between their inhibition efficiencies and quantum chemical descriptors. IC50 values of the investigated compounds are mostly affected by the substituted R2 phenyl moiety. The calculations show that the presence of electron withdrawing group increases the half maximal inhibitory concentration (IC50)...
January 1, 2018: American Journal of Alzheimer's Disease and Other Dementias
https://www.readbyqxmd.com/read/29290746/prolonged-dexmedetomidine-infusion-and-drug-withdrawal-in-critically-ill-children
#20
Astrid S Haenecour, Winnie Seto, Charline M Urbain, Derek Stephens, Peter C Laussen, Corrine R Balit
OBJECTIVE: To characterise the incidence, symptoms and risk factors for withdrawal associated with prolonged dexmedetomidine infusion in paediatric critically ill patients. METHODS: Retrospective chart review in the paediatric intensive care unit and the cardiac critical care unit of a single tertiary children's hospital. Patients up to 18 years old, who received dexmedetomidine for longer than 48 hours were included. RESULTS: A total of 52 patients accounted for 68 unique dexmedetomidine treatment courses of more than 48 hours...
November 2017: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
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