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Valproic acid

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https://www.readbyqxmd.com/read/27923157/adjuvant-neuronal-nitric-oxide-synthase-inhibition-for-combined-treatment-of-epilepsy-and-comorbid-depression
#1
Tanveer Singh, Rajesh Kumar Goel
BACKGROUND: Elevated nitric oxide (NO) levels in the brain have been apparently associated with depression in kindled animals. Owing to the major role of neuronal nitric oxide synthase (nNOS) in brain and ineffectiveness of antiepileptic drugs (AEDs) in restoring nitrosative stress, the present study was envisaged to evaluate the adjuvant nNOS inhibitor, 7-nitroindazole (7-NI) with valproic acid for combined treatment of epilepsy and associated depression. METHODS: Pentylenetetrazole kindled animals associated with depression were treated with vehicle, valproate (300mg/kg/day ip), valproate with 7-NI (10mg/kg; 20mg/kg; 40mg/kg)/day ip and 7-NI (40mg/kg/day ip) for 15days...
October 4, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27918244/polymorphisms-of-abat-scn2a-and-aldh5a1-may-affect-valproic-acid-responses-in-the-treatment-of-epilepsy-in-chinese
#2
Xi Li, Jun Zhang, Xi Wu, Han Yan, Yin Zhang, Ruo-Hui He, Yong-Jun Tang, Yi-Jing He, Dan Tan, Xiao-Yuan Mao, Ji-Ye Yin, Zhao-Qian Liu, Hong-Hao Zhou, Jie Liu
AIM: The clinical efficacy of valproic acid (VPA) varies greatly among epileptic patients. To find the potential genetic factors related to VPA responses, the pharmacogenetics study was conducted. METHODS: Two hundred and one Chinese Han epileptic patients who were treated by VPA for at least 1 year were recruited. Up to 24 SNPs in 11 candidate genes that correlate with the metabolism, transport or target of VPA were genotyped. RESULTS: Three SNPs, rs1731017 (ABAT), rs2304016 (SCN2A) and rs1054899 (ALDH5A1) were found associated with VPA responses with the p-values of 0...
December 5, 2016: Pharmacogenomics
https://www.readbyqxmd.com/read/27917314/pentylenetetrazole-induced-seizures-in-developing-rats-prenatally-exposed-to-valproic-acid
#3
Angel A Puig-Lagunes, Jorge Manzo, Luis Beltrán-Parrazal, Consuelo Morgado-Valle, Rebeca Toledo-Cárdenas, Maria-Leonor López-Meraz
BACKGROUND: Epidemiological evidence indicates epilepsy is more common in patients with autism spectrum disorders (ASD) (20-25%) than in the general population. The aim of this project was to analyze seizure susceptibility in developing rats prenatally exposed to valproic acid (VPA) as autism model. METHODS: Pregnant females were injected with VPA during the twelfth embryonic day. Seizures were induced in fourteen-days-old rat pups using two models of convulsions: pentylenetetrazole (PTZ) and lithium-pilocarpine (Li-Pilo)...
2016: PeerJ
https://www.readbyqxmd.com/read/27917225/abdominal-epilepsy-as-an-unusual-cause-of-abdominal-pain-a-case-report
#4
Yilmaz Yunus, Ustebay Sefer, Ulker Ustebay Dondu, Ozanli Ismail, Ehi Yusuf
INTRODUCTION: Abdominal pain, in etiology sometimes difficult to be defined, is a frequent complaint in childhood. Abdominal epilepsy is a rare cause of abdominal pain. OBJECTIVES: In this article, we report on 5 year old girl patient with abdominal epilepsy. METHODS: Some investigations (stool investigation, routine blood tests, ultrasonography (USG), electrocardiogram (ECHO) and electrocardiograpy (ECG), holter for 24hr.) were done to understand the origin of these complaints; but no abnormalities were found...
September 2016: African Health Sciences
https://www.readbyqxmd.com/read/27910887/energy-metabolism-regulated-by-hdac-inhibitor-attenuates-cardiac-injury-in-hemorrhagic-rat-model
#5
Qiyuan Kuai, Chunyan Wang, Yanbing Wang, Weijing Li, Gongqing Zhang, Zhixin Qiao, Min He, Xuanlin Wang, Yu Wang, Xingwei Jiang, Lihua Su, Yuezhong He, Suping Ren, Qun Yu
A disturbance of energy metabolism reduces cardiac function in acute severe hemorrhagic patients. Alternatively, adequate energy supply reduces heart failure and increases survival. However, the approach to regulating energy metabolism conductive to vital organs is limited, and the underlying molecular mechanism remains unknown. This study assesses the ability of histone deacetylase inhibitors (HDACIs) to preserve cardiac energy metabolism during lethal hemorrhagic injury. In the lethally hemorrhagic rat and hypoxic myocardial cells, energy metabolism and heart function were well maintained following HDACI treatment, as evident by continuous ATP production with normal cardiac contraction...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27906585/birth-of-cloned-microminipigs-derived-from-somatic-cell-nuclear-transfer-embryos-that-have-been-transiently-treated-with-valproic-acid
#6
Kazuchika Miyoshi, Hiroaki Kawaguchi, Kosuke Maeda, Masahiro Sato, Kohei Akioka, Michiko Noguchi, Masahisa Horiuchi, Akihide Tanimoto
In our previous study, we found that treatment of miniature pig somatic cell nuclear transfer (SCNT) embryos with 4 mM valproic acid (VPA), a histone deacetylase inhibitor, for 48 hours after activation enhanced blastocyst formation rate and octamer-binding transcription factor-3/4 (Oct-3/4) gene expression at the late blastocyst stage; however, the production of viable cloned pups failed, when those VPA-treated SCNT embryos were transferred to recipients. This failure suggests that the present VPA treatment is suboptimal...
November 2016: Cellular Reprogramming
https://www.readbyqxmd.com/read/27904479/valproic-acid-as-a-microrna-modulator-to-promote-neurite-outgrowth
#7
Hirotaka Oikawa, Judy C G Sng
No abstract text is available yet for this article.
October 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27899394/stress-activated-kinase-mkk7-governs-epigenetics-of-cardiac-repolarization-for-arrhythmia-prevention
#8
Sanjoy K Chowdhury, Wei Liu, Min Zi, Yatong Li, Shunyao Wang, Hoyee Tsui, Sukhpal Prehar, Simon J Castro, Henggui Zhang, Yong Ji, Xiuqin Zhang, Rui-Ping Xiao, Rongli Zhang, Ming Lei, Lukas Cyganek, Kaomei Guan, Catherine B Millar, Xudong Liao, Mukesh K Jain, Mark R Boyett, Elizabeth J Cartwright, Holly A Shiels, Xin Wang
BACKGROUND: -Ventricular arrhythmia is a leading cause of cardiac mortality. Most antiarrhythmics present paradoxical pro-arrhythmic side effects, culminating in a greater risk of sudden death. METHODS: -We describe a new regulatory mechanism linking mitogen-activated kinase kinase-7 (MKK7) deficiency with increased arrhythmia vulnerability in hypertrophied and failing hearts using mouse models harbouring MKK7 knockout or overexpression. The human relevance of this arrhythmogenic mechanism is evaluated in human induced pluripotent stem cells-derived cardiomyocytes (iPSC-CMs)...
November 29, 2016: Circulation
https://www.readbyqxmd.com/read/27896804/antiepileptic-drugs-and-hyponatremia-in-older-adults-two-population-based-cohort-studies
#9
Sonja Gandhi, Eric McArthur, Muhammad M Mamdani, Daniel G Hackam, Richard S McLachlan, Matthew A Weir, Jorge G Burneo, Amit X Garg
OBJECTIVE: To examine the 30-day risk of hospitalization with hyponatremia associated with carbamazepine, valproic acid (V), phenytoin (P), or topiramate (T) use compared to nonuse in the outpatient setting among older adults. METHODS: We conducted two population-based, retrospective cohort studies in Ontario, Canada, between 2003 and 2015 using administrative health care databases of older adults. The first study compared carbamazepine users to a propensity-score matched group of antiepileptic drug nonusers, whereas the second compared V-P-T users to a propensity-score matched group of antiepileptic nonusers...
November 29, 2016: Epilepsia
https://www.readbyqxmd.com/read/27890817/sec-butylpropylacetamide-spd-a-new-amide-derivative-of-valproic-acid-for-the-treatment-of-neuropathic-and-inflammatory-pain
#10
Dan Kaufmann, Peter J West, Misty D Smith, Boris Yagen, Meir Bialer, Marshall Devor, H Steve White, K C Brennan
Chronic pain is a multifactorial disease comprised of both inflammatory and neuropathic components that affect ∼20% of the world's population. sec-Butylpropylacetamide (SPD) is a novel amide analogue of valproic acid (VPA) previously shown to possess a broad spectrum of anticonvulsant activity. In this study we defined the pharmacokinetic parameters of SPD in rat and mouse, and then evaluated its antinociceptive potential in neuropathic and acute inflammatory pain models. In the sciatic nerve ligation (SNL) model of neuropathic pain, SPD was equipotent to gabapentin and more potent than its parent compound VPA...
November 24, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27889835/valproic-acid-reduces-hair-loss-and-improves-survival-in-patients-receiving-temozolomide-based-radiation-therapy-for-high-grade-glioma
#11
Shinichi Watanabe, Yui Kuwabara, Satoshi Suehiro, Daisuke Yamashita, Mamoru Tanaka, Akihiro Tanaka, Shiro Ohue, Hiroaki Araki
PURPOSE: Valproic acid (VPA), a histone deacetylase (HDAC) inhibitor, is also used to manage seizures in glioblastoma patients. HDAC inhibitors can protect normal cells and tissues from the deleterious effects of radiotherapy, and VPA is reported to improve the survival of glioblastoma patients receiving chemoradiation therapy. VPA also promotes hair growth, and thus has the potential to reduce the radiotherapy side effect of hair loss while improving the survival of patients with glioblastoma...
November 26, 2016: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27889834/antiepileptic-drug-use-in-italian-children-over-a-decade
#12
Daria Putignano, Antonio Clavenna, Rita Campi, Angela Bortolotti, Ida Fortino, Luca Merlino, Aglaia Vignoli, Maria Paola Canevini, Maurizio Bonati
PURPOSE: The aim of the study was to evaluate prescription profiles of antiepileptic drugs (AEDs) and to assess hospitalizations and specialist visits in pediatric patients with epilepsy. METHODS: The data sources were administrative health databases of Italy's Lombardy Region, which collect prescriptions for drugs, diagnostic tests, specialist visits, and hospital discharge forms. All patients aged 0-16 years with at least seven AED (group N03A of the International Anatomical Therapeutic Chemical Classification) prescriptions over two consecutive years between 2003 and 2010 were identified and classified as prevalent or incident cases (no prescriptions in two previous years)...
November 26, 2016: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27884140/phase-ii-clinical-study-of-valproic-acid-plus-cisplatin-and-cetuximab-in-recurrent-and-or-metastatic-squamous-cell-carcinoma-of-head-and-neck-v-chance-trial
#13
Francesco Caponigro, Elena Di Gennaro, Franco Ionna, Francesco Longo, Corrado Aversa, Ettore Pavone, Maria Grazia Maglione, Massimiliano Di Marzo, Paolo Muto, Ernesta Cavalcanti, Antonella Petrillo, Fabio Sandomenico, Piera Maiolino, Roberta D'Aniello, Gerardo Botti, Rossella De Cecio, Nunzia Simona Losito, Stefania Scala, Annamaria Trotta, Andrea Ilaria Zotti, Francesca Bruzzese, Antonio Daponte, Ester Calogero, Massimo Montano, Monica Pontone, Gianfranco De Feo, Francesco Perri, Alfredo Budillon
BACKGROUND: Recurrent/metastatic squamous cell carcinoma of the head and neck (SCCHN) has a poor prognosis and the combination of cisplatin and cetuximab, with or without 5-fluorouracil, is the gold standard treatment in this stage. Thus, the concomitant use of novel compounds represents a critical strategy to improve treatment results. Histone deacetylase inhibitors (HDACi) enhance the activity of several anticancer drugs including cisplatin and anti-Epidermal Growth Factor Receptor (anti-EGFR) compounds...
November 25, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27878518/comparative-efficacy-of-alpha-linolenic-acid-and-gamma-linolenic-acid-to-attenuate-valproic-acid-induced-autism-like-features
#14
Sneha Yadav, Virendra Tiwari, Manjari Singh, Rajnish K Yadav, Subhadeep Roy, Uma Devi, Swetlana Gautam, Jitendra Kumar Rawat, Mohd Nazam Ansari, Abdulaziz Sa Saeedan, Anand Prakash, Shubhini A Saraf, Gaurav Kaithwas
The present study was undertaken to elucidate the effect of alpha-linolenic acid (ALA, 18:3, ω-3) and gamma-linolenic acid (GLA, 18:3, ω-6) on experimental autism features induced by early prenatal exposure to valproic acid (VPA) in albino wistar pups. The pups were scrutinized on the accounts of behavioral, biochemical, and inflammatory markers, and the results suggested that the GLA can impart significant protection in comparison to ALA against VPA-induced autism features. When scrutinized histopathologically, the cerebellum of the GLA-treated animals was evident for more marked protection toward neuronal degeneration and neuronal loss in comparison to ALA...
November 22, 2016: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/27875371/topiramate-blood-levels-during-polytherapy-for-epilepsy-in-children
#15
Taira Toki, Toshiyuki Iwasaki, Masahiro Ishii
BACKGROUND: The therapeutic range of topiramate (TPM) blood level is not set because the efficacy and safety are not considered to be related to the level. However, the therapeutic target without side effects is necessary, so the optimal range of TPM blood level was analyzed in this study. STUDY QUESTION: This study was conducted to evaluate the efficacy of TPM over 2 years and the utility of measuring blood levels of TPM during the follow-up of epileptic patients...
November 14, 2016: American Journal of Therapeutics
https://www.readbyqxmd.com/read/27867948/supra-therapeutic-plasma-concentrations-of-haloperidol-induce-moderate-inhibition-of-lipopolysaccharide-induced-interleukin-8-release-in-human-monocytes
#16
Herbert Bosshart
BACKGROUND: The clinical use of antipsychotics and mood-stabilizing drugs with proven efficacy is largely determined by the occurrence of treatment-emergent adverse events and routine clinical chemistry and haematology data, which together define the safety and tolerability profile of these psychopharmaceuticals. Whereas the effects of mood-stabilizing drugs on functional properties of blood cells have been poorly investigated, the effects of antipsychotics have received more attention...
October 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27860192/metabolite-profiling-of-whole-murine-embryos-reveals-metabolic-perturbations-associated-with-maternal-valproate-induced-neural-tube-closure-defects
#17
Darya Akimova, Bogdan J Wlodarczyk, Ying Lin, M Elizabeth Ross, Richard H Finnell, Qiuying Chen, Steven S Gross
BACKGROUND: Valproic acid (VPA) is prescribed therapeutically for multiple conditions, including epilepsy. When taken during pregnancy, VPA is teratogenic, increasing the risk of several birth and developmental defects including neural tube defects (NTDs). The mechanism by which VPA causes NTDs remains controversial and how VPA interacts with folic acid (FA), a vitamin commonly recommended for the prevention of NTDs, remains uncertain. We sought to address both questions by applying untargeted metabolite profiling analysis to neural tube closure (NTC) stage mouse embryos...
November 18, 2016: Birth Defects Research. Part A, Clinical and Molecular Teratology
https://www.readbyqxmd.com/read/27856274/improved-assessment-of-sensorimotor-gating-in-animal-models-relevant-to-asd-a-data-modelling-approach-to-quantify-prepulse-inhibition-of-the-acoustic-startle-reflex
#18
Stéphanie Degroote, Darel Hunting, Larissa Takser
BACKGROUND: The PrePulse Inhibition (PPI) of the acoustic startle reflex is a neurobehavioral test frequently used in neurodevelopmental studies. Most PPI studies have used rodent models of schizophrenia; however, the currently used data analysis method does not take into account the variability present in autistic preclinical models. NEW METHOD: We propose a new data modelling approach for PPI data obtained from animals exposed to valproic acid or endocrine disruptors, using mixed modeling; and a new calculation of inhibition of the acoustic startle, which takes into account the habituation phenomenon...
November 14, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27855134/effects-of-ugt1a6-and-gabra1-on-standardized-valproic-acid-plasma-concentrations-and-treatment-effect-in-children-with-epilepsy-in-china
#19
Weixing Feng, Shenghui Mei, Leting Zhu, Yazhen Yu, Weili Yang, Baoqin Gao, Xiaojuan Wu, Zhigang Zhao, Fang Fang
BACKGROUND: Valproic acid (VPA) is a widely used antiepileptic drug with acceptable safety and efficacy in treating pediatric patients with various kinds of seizures. However, interindividual variations in plasma concentrations and treatment effects of patients with epilepsy treated with VPA are observed. This study aimed to evaluate the effects of various genetic variations on normalized plasma concentration of VPA (NCVPA) and the treatment response in Chinese children with epilepsy administered with VPA...
December 2016: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/27853355/anticonvulsant-effects-of-isomeric-nonimidazole-histamine-h3-receptor-antagonists
#20
Bassem Sadek, Ali Saad, Johannes Stephan Schwed, Lilia Weizel, Miriam Walter, Holger Stark
Phenytoin (PHT), valproic acid, and modern antiepileptic drugs (AEDs), eg, remacemide, loreclezole, and safinamide, are only effective within a maximum of 70%-80% of epileptic patients, and in many cases the clinical use of AEDs is restricted by their side effects. Therefore, a continuous need remains to discover innovative chemical entities for the development of active and safer AEDs. Ligands targeting central histamine H3 receptors (H3Rs) for epilepsy might be a promising therapeutic approach. To determine the potential of H3Rs ligands as new AEDs, we recently reported that no anticonvulsant effects were observed for the (S)-2-(4-(3-(piperidin-1-yl)propoxy)benzylamino)propanamide (1)...
2016: Drug Design, Development and Therapy
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