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Valproate

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https://www.readbyqxmd.com/read/29783990/severe-hepatopathy-and-neurological-deterioration-after-start-of-valproate-treatment-in-a-6-year-old-child-with-mitochondrial-tryptophanyl-trna-synthetase-deficiency
#1
Elise Vantroys, Joél Smet, Arnaud V Vanlander, Sarah Vergult, Ruth De Bruyne, Frank Roels, Hedwig Stepman, Herbert Roeyers, Björn Menten, Rudy Van Coster
BACKGROUND: The first subjects with deficiency of mitochondrial tryptophanyl-tRNA synthetase (WARS2) were reported in 2017. Their clinical characteristics can be subdivided into three phenotypes (neonatal phenotype, severe infantile onset phenotype, Parkinson-like phenotype). RESULTS: Here, we report on a subject who presented with early developmental delay, motor weakness and intellectual disability and who was considered during several years as having a non-progressive encephalopathy...
May 21, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29782174/expression-of-concentrative-nucleoside-transporters-slc28a-in-the-human-placenta-effects-of-gestation-age-and-prototype-differentiation-affecting-agents
#2
Lucie Jiraskova, Lukas Cerveny, Sara Karbanova, Zuzana Ptackova, Frantisek Staud
Equilibrative ( SLC29A) and concentrative ( SLC28A) nucleoside transporters contribute to proper placental development and mediate uptake of nucleosides/nucleoside-derived drugs. We analyzed placental expression of SLC28A mRNA during gestation. Moreover, we studied in choriocarcinoma-derived BeWo cells whether SLC29A and SLC28A mRNA levels can be modulated by activity of adenylyl cyclase, retinoic acid receptor activation, CpG islands methylation, or histone acetylation, using forskolin, all- trans-retinoic acid, and 5-azacytidine, and sodium butyrate/sodium valproate, respectively...
May 21, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29780561/triple-action-pt-iv-derivatives-of-cisplatin-a-new-class-of-potent-anticancer-agents-that-overcome-resistance
#3
Emanuele Petruzzella, Roman Sirota, Irene Solazzo, Valentina Gandin, Dan Gibson
A series of triple action Pt(iv) prodrugs was designed to test the hypothesis that multi-action compounds, where each bioactive moiety intervenes in several cellular processes, might be more effective than a single agent at killing cancer cells. In particular, "triple action" Pt(iv) derivatives of cisplatin, where the axial ligands are inhibitors of cyclooxygenase (COXi), histone deacetylase (HDACi) or pyruvate dehydrogenase kinase (PDKi) were developed. All compounds, ctc-[Pt(NH3 )2 (COXi)(PDKi)Cl2 ], ctc-[Pt(NH3 )2 (COXi)(HDACi)Cl2 ] and ctc-[Pt(NH3 )2 (HDACi)(PDKi)Cl2 ], where COXi = aspirin or ibuprofen, PDKi = dichloroacetate and HDACi = valproate or phenylbutyrate, were significantly more cytotoxic than cisplatin against all cell lines of an in-house panel of human cancer cells...
May 14, 2018: Chemical Science
https://www.readbyqxmd.com/read/29778017/the-preconception-care-experiences-of-women-with-epilepsy-on-sodium-valproate
#4
Lorna Lawther, Helen Dolk, Marlene Sinclair, Jim Morrow
PURPOSE: To understand the preconception experiences of women with epilepsy who have been taking the teratogenic drug valproate. METHODS: Seven women were recruited, three from a preconception clinic and four from an antenatal clinic in a region of the UK. All had taken valproate preconceptionally. Three preconception clinic encounters were observed and audio-recorded. Interviews with all women were analysed using Interpretative Phenomenological Analysis (IPA). RESULTS: Women experienced a "trajectory of balance"...
May 16, 2018: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29776316/a-systematic-review-and-combined-analysis-of-therapeutic-drug-monitoring-studies-for-oral-paliperidone
#5
Georgios Schoretsanitis, Edoardo Spina, Christoph Hiemke, Jose de Leon
This article includes a combined analysis of therapeutic drug monitoring (TDM) studies and a review of the marketer's data on pharmacological mechanisms. Areas covered: An article search led to the inclusion of 21 paliperidone studies in the systematic review plus 2 case reports. Paliperidone clearance was calculated from: 1) steady-state studies using concentration/dose (C/D) ratios, and 2) single-dose studies describing 24-hour area under the curve calculations. The marketed extended-release formulation has 28% bioavailability...
May 18, 2018: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/29769109/valproate-induced-hyperammonemia-uncovering-an-underlying-inherited-metabolic-disorder-a-case-report
#6
Shaine Mehta, Sarrah Tayabali, Robin Lachmann
BACKGROUND: Sodium valproate is a commonly used anticonvulsant. It is widely recognized that valproate can cause hyperammonemia, particularly in people with underlying liver disease. Patients with urea cycle disorders are genetically predisposed to this adverse event and can develop severe hyperammonemia if given valproate. This can occur even if liver functions tests and plasma concentration of valproate are normal, highlighting the importance of checking ammonia levels in any patient presenting with encephalopathy...
May 17, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29766538/chronic-exposure-to-cannabidiol-induces-reproductive-toxicity-in-male-swiss-mice
#7
Renata K Carvalho, Monaliza L Santos, Maingredy R Souza, Thiago L Rocha, Francisco S Guimarães, Janete A Anselmo-Franci, Renata Mazaro-Costa
Children and adults with frequent and severe episodes of epilepsy that do not respond to standard treatments (such as carbamazepine, phenytoin and valproate) have long been prescribed cannabidiol (CBD) as an anticonvulsant drug. However, the safety of its chronic use in relation to reproduction has not been fully examined. This study aimed to assess the effects of chronic CBD exposure on the male reproductive system. CBD was orally administered to 21-day-old male Swiss mice at doses of 15 and 30 mg kg-1 daily (CBD 15 and 30 groups, respectively), with a control group receiving sunflower oil, for 34 consecutive days...
May 16, 2018: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29761351/economic-evaluation-of-stiripentol-for-dravet-syndrome-a-cost-utility-analysis
#8
Jesse Elliott, Bláthnaid McCoy, Tammy Clifford, George A Wells, Doug Coyle
BACKGROUND: Dravet syndrome is a catastrophic form of pediatric treatment-resistant epilepsy with few effective treatment options. Stiripentol is approved for use in Canada for treatment of Dravet syndrome, but the associated long-term costs and benefits have not been well-studied and its cost effectiveness is unclear. OBJECTIVE: The aim of this study was to evaluate the cost effectiveness of stiripentol as an adjunctive treatment to clobazam and valproate for treatment of Dravet syndrome from the perspective of the Canadian public healthcare payer...
May 15, 2018: PharmacoEconomics
https://www.readbyqxmd.com/read/29761006/sodium-valproate-compared-to-phenytoin-in-treatment-of-status-epilepticus
#9
Mohammad Reza Amiri-Nikpour, Surena Nazarbaghi, Parisa Eftekhari, Sedra Mohammadi, Sina Dindarian, Mahdi Bagheri, Hozan Mohammadi
Background: Status epilepticus (SE) is a neurological emergency which can be life-threatening. Several medical regimens are used in order to control it. In this study, we intended to evaluate the clinical efficacy and tolerability of sodium valproate and intravenous phenytoin (IV PHT) in the control of SE. Methods: One hundred and ten consecutive patients suffering from benzodiazepine refractory SE who were referred to the emergency ward from March 2014 to March 2015 were randomly divided into two groups...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29760602/sodium-valproate-inhibits-small-cell-lung-cancer-tumor-growth-on-the-chicken-embryo-chorioallantoic-membrane-and-reduces-the-p53-and-ezh2-expression
#10
Lina Šlekienė, Donatas Stakišaitis, Ingrida Balnytė, Angelija Valančiūtė
The study aims to test the effect of different sodium valproate (NaVP) doses on small cell lung cancer NCI-H146 cells tumor in chicken embryo chorioallantoic membrane (CAM) model. Xenografts were investigated in the following groups: nontreated control and 5 groups treated with different NaVP doses (2, 3, 4, 6, and 8 mmol/L). Invasion of tumors into CAM in the nontreated group reached 76%. Tumors treated with 8 mmol/L NaVP doses significantly differed in tumor invasion frequency from the control and those treated with 2 mmol/L ( P < ...
April 2018: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/29758362/the-anti-epileptic-drugs-valproate-carbamazepine-and-levetiracetam-cause-bone-loss-and-modulate-wnt-inhibitors-in-normal-and-ovariectomised-rats
#11
Bushra Parveen, Ambrish Kumar Tiwari, Moon Jain, Subhashis Pal, Naibedya Chattopadhyay, Manjari Tripathi, Divya Vohora
Secondary osteoporosis is the major concern associated with long term intake of antiepileptic drugs (AEDs). Women are the vulnerable targets owing to post-menopausal bone loss. In the present work, we evaluated the effect of 10 weeks of treatment with AED therapy (carbamazepine, CBZ, 75 mg/kg; sodium valproate, SVP, 300 mg/kg; levetiracetam, LTM, 150 mg/kg) on bone mineral density and microarchitecture at femoral epiphysis, lumbar vertebrae and proximal tibia of normal and ovariectomised Wistar rats...
May 11, 2018: Bone
https://www.readbyqxmd.com/read/29756288/mixed-states-in-bipolar-and-major-depressive-disorders-systematic-review-and-quality-appraisal-of-guidelines
#12
REVIEW
N Verdolini, D Hidalgo-Mazzei, A Murru, I Pacchiarotti, L Samalin, A H Young, E Vieta, A F Carvalho
OBJECTIVE: This systematic review provided a critical synthesis and a comprehensive overview of guidelines on the treatment of mixed states. METHOD: The MEDLINE/PubMed and EMBASE databases were systematically searched from inception to March 21st, 2018. International guidelines covering the treatment of mixed episodes, manic/hypomanic, or depressive episodes with mixed features were considered for inclusion. A methodological quality assessment was conducted with the Appraisal of Guidelines for Research and Evaluation-AGREE II...
May 13, 2018: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/29753923/prevalence-of-valproate-syndrome-in-europe-from-2005-to-2014-a-registry-based-multi-centre-study
#13
Joan K Morris, Ester Garne, Maria Loane, Marie-Claude Addor, Ingeborg Barisic, Fabrizio Bianchi, Miriam Gatt, Monica Lanzoni, Catherine Lynch, Olatz Mokoroa, Vera Nelen, Amanda Neville, Mary T O'Mahony, Hanitra Randrianaivo-Ranjatoelina, Anke Rissmann, David Tucker, H E K de Walle, Nataliia Zymak-Zakutnia, Judith Ankin
Women with epilepsy need to continue to take anticonvulsants during their pregnancies to prevent seizures from occurring. Since the 1980's, it has been known that the use of valproate (an anticonvulsant) in the first trimester of pregnancy is associated with an increased risk of spina bifida. Recent studies have also demonstrated increased risks of other congenital anomalies as well as a risk of cognitive impairment. Doctors in the EU are now advised not to prescribe valproate in pregnant women, in women who can become pregnant or in girls unless other treatments are ineffective or not tolerated...
May 10, 2018: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29753294/prescription-trends-and-psychiatric-symptoms-following-first-receipt-of-one-of-seven-common-antiepileptic-drugs-in-general-practice
#14
Colin B Josephson, Jordan D T Engbers, Nathalie Jette, Scott B Patten, Tolulope T Sajobi, Deborah Marshall, Mark Lowerison, Samuel Wiebe
We sought to examine the risk of psychiatric symptoms associated with a first prescription for specific antiepileptic drugs (AEDs) used in monotherapy in a general cohort of patients with epilepsy. We used The Health Improvement Network database (comprising the years 2000-2012) to identify incident patients with epilepsy. The index date was that on which they met the case definition for epilepsy, and analyses only included patients who remained on monotherapy or received no AED therapy following diagnosis to avoid confounding by polytherapy...
May 9, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29749618/distinguishing-features-between-valproate-induced-tremor-and-essential-tremor
#15
M Alonso-Juarez, J F Baizabal-Carvallo
BACKGROUND: Tremor frequently occurs in patients taking valproate and may resemble that observed in patients with essential tremor (ET). We aimed to compare the distribution, severity, and functional impact of both types of tremor. METHODS: Among 118 consecutive individuals taking valproate, we identified 28 patients with valproate-induced tremor severe enough to require pharmacological treatment; through evaluations using the Clinical Rating Scale for Tremor (CRST), they were compared with 29 consecutive patients with ET...
May 10, 2018: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29747241/stiripentol-add-on-therapy-for-focal-refractory-epilepsy
#16
REVIEW
Francesco Brigo, Stanley C Igwe, Nicola Luigi Bragazzi
BACKGROUND: This is an updated version of the Cochrane review last published in 2015 (Issue 10). For nearly 30% of people with epilepsy, seizures are not controlled by current treatments. Stiripentol is a new antiepileptic drug (AED) that was developed in France and was approved by the European Medicines Agency (EMA) in 2007 for the treatment of Dravet syndrome as an adjunctive therapy with valproate and clobazam, with promising effects. OBJECTIVES: To evaluate the efficacy and tolerability of stiripentol as add-on treatment for people with focal refractory epilepsy who are taking AEDs...
May 10, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29746282/comparing-the-effects-of-atorvastatin-with-sodium-valproate-divalproex-on-frequency-and-intensity-of-frequent-migraine-headaches-a-double-blind-randomized-controlled-study
#17
Omid Hesami, Mohammad Sistanizad, Elnaz Asadollahzade, Mohammad-Sadegh Johari, Nahid Beladi-Moghadam, Homa Mazhabdar-Ghashghai
OBJECTIVES: To evaluate the prophylactic effects of atorvastatin on frequency, intensity, and duration of migraine attacks compared with sodium valproate. METHODS: In this randomized, double-blind, single-center controlled trial, patients with 6 to 15 migraine attacks per month, which were candidates of preventive treatment, were recruited. The patients were randomly allocated into 2 groups. The first group (A) received atorvastatin 40 mg daily, and the second group (B) received sodium valproate 500 mg daily...
May 2018: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/29744790/comparative-efficacy-of-antiepileptic-drugs-for-patients-with-generalized-epileptic-seizures-systematic-review-and-network-meta-analyses
#18
Marília Silveira de Almeida Campos, Lorena Rocha Ayres, Manuela Roque Siane Morelo, Fabiana Angelo Marques Carizio, Leonardo Régis Leira Pereira
Background Valproate is a widely prescribed antiepileptic drug for generalized epilepsies, due to the extensive knowledge on its efficacy since it is on the market for many decades. However, a large number of new antiepileptic medicines was introduced into clinical practice and may be better options for treatment, considering that these medicines differ in terms of efficacy spectrum. Despite extensive research, questions regarding which medicine would constitute the first option for the monotherapy treatment of generalized epilepsy remain...
May 9, 2018: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/29744073/complex-visual-hallucinatory-experience-in-an-elderly-blind-woman-with-glaucoma-revisiting-charles-bonnet-syndrome
#19
Azan A Nyundo, Innocent R Mwombeki
For fear of being ridiculed, individuals with visual hallucinations hide their experiences and thus remain unrecognized and miss treatment. An elderly blind woman secondary to glaucoma experienced visual hallucinations accompanied by gross behavior disturbances. She improved with sodium valproate after haloperidol failed and remained relatively improved upon 3 months follow-up.
May 2018: Clinical Case Reports
https://www.readbyqxmd.com/read/29737183/clozapine-toxicity-in-a-cyp2d6-poor-metaboliser-additive-effects-of-haloperidol-and-valproate-on-clozapine-metabolism
#20
Robert Reznik, Rena Yuan Yuan Chen, Phoebe Stanford
OBJECTIVE: To illustrate the complexities of clozapine metabolism with the use of therapeutic drug monitoring. METHODS: We describe a case of clozapine toxicity in a patient with schizophrenia treated with the combination of clozapine, valproate and haloperidol. RESULTS: A 24-year-old CYP2D6 poor metaboliser developed clozapine toxicity corresponding to the additive effects of haloperidol, and increasing clozapine and valproate doses. Saturation of metabolism, evidenced by a high clozapine/norclozapine ratio, was present at this time...
May 1, 2018: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
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