keyword
MENU ▼
Read by QxMD icon Read
search

Neurotoxic reactions

keyword
https://www.readbyqxmd.com/read/28716455/the-vitamin-b6-paradox-supplementation-with-high-concentrations-of-pyridoxine-leads-to-decreased-vitamin-b6-function
#1
Misha F Vrolijk, Antoon Opperhuizen, Eugène H J M Jansen, Geja J Hageman, Aalt Bast, Guido R M M Haenen
Vitamin B6 is a water-soluble vitamin that functions as a coenzyme in many reactions involved in amino acid, carbohydrates and lipid metabolism. Since 2014, >50 cases of sensory neuronal pain due to vitamin B6 supplementation were reported. Up to now, the mechanism of this toxicity is enigmatic and the contribution of the various B6 vitamers to this toxicity is largely unknown. In the present study, the neurotoxicity of the different forms of vitamin B6 is tested on SHSY5Y and CaCo-2 cells. Cells were exposed to pyridoxine, pyridoxamine, pyridoxal, pyridoxal-5-phosphate or pyridoxamine-5-phosphate for 24h, after which cell viability was measured using the MTT assay...
July 14, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28716125/mercury-alters-endogenous-phosphorylation-profiles-of-syk-in-murine-b-cells
#2
Joseph A Caruso, Nicholas Carruthers, Namhee Shin, Randal Gill, Paul M Stemmer, Allen Rosenspire
BACKGROUND: Epidemiological evidence and animal models suggest that exposure to low and non-neurotoxic concentrations of mercury may contribute to idiosyncratic autoimmune disease. Since defects in function and signaling in B cells are often associated with autoimmunity, we investigated whether mercury exposure might alter B cell responsiveness to self-antigens by interfering with B cell receptor (BCR) signal transduction. In this study we determined the effects of mercury on the protein tyrosine kinase SYK, a critical protein involved in regulation of the BCR signaling pathway...
July 17, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28711275/chemotherapy-induced-stroke-mimic-5-fluorouracil-encephalopathy-fulfilling-criteria-for-tissue-plasminogen-activator-therapy
#3
May Thuy Nguyen, Robyn Stoianovici, Luigi Brunetti
Stroke mimics, especially those involving chemotherapy related neurotoxicity, can confound the clinical diagnosis of acute stroke. Here we describe the case of a 63year-old male with a recent history of stage IIIC colon cancer who presented with confusion on the second day of modified FOLFOX6 (5-fluorouracil/oxaliplatin) chemotherapy and subsequently received alteplase, tissue plasminogen activator therapy (tPA), for presumed ischemic stroke. Magnetic resonance imaging scans after tPA administration did not reveal evidence of an infarction and the patients' neurological symptoms resolved completely after discontinuation of 5-fluorouracil (5-FU)...
July 6, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28694764/2-pyrazoline-derivatives-in-neuropharmacology-synthesis-adme-prediction-molecular-docking-and-in-vivo-biological-evaluation
#4
Savita Upadhyay, Avinash C Tripathi, Sarvesh Paliwal, Shailendra K Saraf
A novel series of 1,3,5-trisubstituted-2-pyrazoline derivatives (PFC-1 to PFC-16) were synthesized in a three step reaction using conventional and microwave assisted green chemistry approach. The synthesized derivatives were characterized and their chemical structures were established by various physicochemical methods such as IR, Mass, (1)H-NMR, (13)C-NMR and elemental analysis. The synthesized compounds were tested for their neuropharmacological potential. The compounds exhibited significant antidepressant and anti-anxiety activities against various behavioral in vivo models...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28641637/-clinical-efficacy-and-safety-of-cmod-regimen-as-the-first-treatment-for-aged-new-diagnosed-patients-with-peripheral-t-cell-lymphoma
#5
Xiao-Lei Liu, Lei Gao, Na Cui
OBJECTIVE: To investigate clinical efficacy and safety of CMOD regimen as the first treatment for the aged new-diagnosed patients with peripheral T-cell lymphoma. METHODS: Seventy-six patients diagnosed as peripheral T cell lymphoma according to chemotherapy were divided into the 2 group: A and B groups. The patients in A group received CMOD regimen (38 cases) and the patients in B group received CHOP regiment (38 cases). The clinical efficacy, PFS (progression-free survival), OS and the adverse reactions in the 2 groups were compared...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28627692/the-role-of-intestinal-endotoxemia-in-a-rat-model-of-aluminum-neurotoxicity
#6
Feng Wang, Rui-Xia Guo, Wen-Xing Li, Bao-Feng Yu, Bai Han, Li-Xin Liu, De-Wu Han
The present study aimed to investigate the effects of intestinal endotoxemia (IETM) in a rat model of aluminum neurotoxicity established by D-galactose and aluminum trichloride (AlCl3). Adult Wistar rats were administered D‑galactose and AlCl3 to create the aluminum neurotoxicity model. The learning and memory abilities of the rats were subsequently observed using a Morris water maze test and the serum levels of lipopolysaccharide (LPS), tumor necrosis factor (TNF)‑α, interleukin (IL)‑1, diamine oxidase (DAO), glutamine (Gln) and glutaminase were measured...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28621212/methamphetamine-causes-neurotoxicity-by-promoting-polarization-of-macrophages-and-inflammatory-response
#7
X Li, F Wu, L Xue, B Wang, J Li, Y Chen, T Chen
Macrophages, especially their activation state, are closely related to the progression of neurotoxicity. Classically activated macrophages (M1) are proinflammatory effectors, while alternatively activated macrophages (M2) exhibit anti-inflammatory properties. As a powerful addictive psychostimulant drug, coupled with its neurotoxicity, methamphetamine (Meth) abuse may lead to long-lasting abnormalities in the neuronal system. The present study investigated the effect of Meth at subtoxic concentration on macrophage activation state and its underlying toxicity to neuronal cells...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28587465/clarifying-the-catalytic-mechanism-of-human-glutamine-synthetase-a-qm-mm-study
#8
Cátia Moreira, Maria J Ramos, Pedro A Fernandes
Glutamine synthetase (GS) is a crucial enzyme responsible for the elimination of both neurotoxic glutamate and toxic ammonium, by combining them into glutamine. Alterations on the GS activity are associated with severe liver and neurodegenerative diseases and its absence or malformation results in death. In this work, the catalytic mechanism of human GS has been investigated with high-level QM/MM calculations, showing a two-phase reaction cycle. During phase 1, GS activates the reactants (NH4(+) and glutamate) with extreme efficiency, through NH4(+) deprotonation by E305 and glutamate phosphorylation by ATP, in two spontaneous and barrierless reactions...
June 22, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28574015/clinical-profile-complications-of-neurotoxic-snake-bite-comparison-of-two-regimens-of-polyvalent-anti-snake-venom-in-its-treatment
#9
Krishna Sarin, Tarun Kumar Dutta, K V Vinod
BACKGROUND & OBJECTIVES: The optimal anti-snake venom (ASV) dose required to treat neurotoxic snake envenomation is not known. Low-dose ASV (national protocol: maximum dose 200 ml) may be as efficacious as the conventional regimen (100 ml six hourly till all symptoms disappear), but a direct comparison of the regimens is not available. The aim of this study was to test the efficacy of low-dose ASV regimen against the conventional high-dose regimen. METHODS: The clinical profile of 51 patients with neurotoxic snake envenomation was studied...
January 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28566962/impact-of-neuro-beh%C3%A3-et-disease-immunoglobulin-g-on-neuronal-apoptosis
#10
Murat Giriş, Sinem Bireller, Cem İsmail Küçükali, Haşmet Hanağasi, Sevgin Değirmencioğlu, Erdem Tüzün
INTRODUCTION: Parenchymal neuro-Behçet disease (NBD) is encountered in 5%-15% of Behçet disease (BD) patients and is characterized by inflammation of the brainstem and diencephalon structures. Neuronal apoptosis has been shown to participate in neuronal cell loss. Anti-neuronal antibodies have been identified in NBD patients. However, the pathogenic properties of these antibodies have not been studied. METHODS: To delineate the potential pathogenic activity of serum antibodies on neurons, pooled sera from seven NBD patients and seven healthy controls were divided into purified immunoglobulin G (IgG) and IgG-depleted serum fractions, and each fraction was administered to cultured SH-SY5Y neuroblastoma cells...
March 2017: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28541630/universal-tolerance-of-nab-paclitaxel-for-gynecologic-malignancies-in-patients-with-prior-taxane-hypersensitivity-reactions
#11
Kathryn Maurer, Chad Michener, Haider Mahdi, Peter G Rose
OBJECTIVE: To report on the incidence of nab-paclitaxel hypersensitivity reactions (HSRs) in patients with prior taxane HSR. METHODS: From 2005 to 2015, all patients who received nab-paclitaxel for a gynecologic malignancy were identified. Chart abstraction included pathology, prior therapy, indication for nab-paclitaxel, dosing, response, toxicities including any HSR, and reason for discontinuation of nab-paclitaxel therapy. RESULTS: We identified 37 patients with gynecologic malignancies with a history of paclitaxel HSR who received nab-paclitaxel...
July 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28510574/dose-of-antivenom-for-the-treatment-of-snakebite-with-neurotoxic-envenoming-evidence-from-a-randomised-controlled-trial-in-nepal
#12
RANDOMIZED CONTROLLED TRIAL
Emilie Alirol, Sanjib Kumar Sharma, Anup Ghimire, Antoine Poncet, Christophe Combescure, Chabilal Thapa, Vijaya Prasad Paudel, Kalidas Adhikary, Walter Robert Taylor, David Warrell, Ulrich Kuch, François Chappuis
BACKGROUND: Currently, there is inadequate evidence on which to base clinical management of neurotoxic snakebite envenoming, especially in the choice of initial antivenom dosage. This randomised controlled trial compared the effectiveness and safety of high versus low initial antivenom dosage in victims of neurotoxic envenoming. METHODOLOGY/ PRINCIPAL FINDINGS: This was a balanced, randomised, double-blind trial that was conducted in three health care centers located in the Terai plains of Nepal...
May 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28490448/intermittent-hypoxia-training-blunts-cerebrocortical-presenilin-1-overexpression-and-amyloid-%C3%AE-accumulation-in-ethanol-withdrawn-rats
#13
Myoung-Gwi Ryou, Robert T Mallet, Daniel B Metzger, Marianna E Jung
Abrupt cessation of chronic alcohol consumption triggers signaling cascades that harm vulnerable brain regions and produce neurobehavioral deficits. We have demonstrated that a program of intermittent, normobaric hypoxia training (IHT) in rats prevents brain damage and neurobehavioral impairment resulting from abrupt ethanol withdrawal (EW). Moreover, EW induced expression of stress-activated protein kinase p38 and presenilin 1 (PS1), the catalytic subunit of γ-secretase that produces the neurotoxic amyloid-β (Aβ) peptides Aβ40 and Aβ42...
July 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28487145/unmasking-efavirenz-neurotoxicity-time-matters-to-the-underlying-mechanisms
#14
Nádia M Grilo, M João Correia, Joana P Miranda, Madalena Cipriano, Jacinta Serpa, M Matilde Marques, Emília C Monteiro, Alexandra M M Antunes, Lucília N Diogo, Sofia A Pereira
Efavirenz is an anti-HIV drug that presents relevant short- and long-term central nervous system adverse reactions. Its main metabolite (8-hydroxy-efavirenz) was demonstrated to be a more potent neurotoxin than efavirenz itself. This work was aimed to understand how efavirenz biotransformation to 8-hydroxy-efavirenz is related to its short- and long-term neuro-adverse reactions. To access those mechanisms, the expression and activity of Cyp2b enzymes as well as the thiolomic signature (low molecular weight thiols plus S-thiolated proteins) were longitudinally evaluated in the hepatic and brain tissues of rats exposed to efavirenz during 10 and 36days...
May 6, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28443568/the-compartment-syndrome-associated-with-deep-vein-thrombosis-due-to-rattlesnake-bite-a-case-report
#15
Radu Ciprian Tincu, Zoie Ghiorghiu, Dana Tomescu, Radu Alexandru Macovei
BACKGROUND: Snakebite is a health issue specific to some parts of the world, especially in the tropical area, where it produces many victims. The main clinical damage caused by snake bite involves hemotoxic, neurotoxic and myotoxic reactions. It is also established that the importance of systemic impairment varies according to individual factors and are related to organ dysfunction, shock or hypotension. We report the case of a young woman suffering from snakebite who developed deep vein thrombosis and compartment syndrome...
April 13, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28431387/cypermethrin-toxication-leads-to-histopathological-lesions-and-induces-inflammation-and-apoptosis-in-common-carp-cyprinus-carpio-l
#16
Harun Arslan, Selçuk Özdemir, Serdar Altun
Cypermethrin (Cyp), a known neurotoxic pesticide, is widely used in agricultural applications. In the present study, the aim was to determine the histopathological effects of Cyp toxication and evaluate the activation of inducible nitric oxide synthetase (iNOS) and 8-hydroxy-2-deoxyguanosine (8-OHdG) using an immunofluorescence assay. Thereafter, we identified the expressions of caspase 3, capsase 8, iNOS, and metallothionein 1 (MT1) genes in common carp using quantitative reverse transcription polymerase chain reaction (qRT-PCR)...
April 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28413886/effects-of-cadmium-on-bcl-2-bax-expression-ratio-in-rat-cortex-brain-and-hippocampus
#17
S Mahdavi, P Khodarahmi, N H Roodbari
To investigate the underlying mechanism of neurotoxicity of cadmium, we examined the effects of intraperitoneal injection of cadmium on messenger RNA (mRNA) expression of Bcl-2 (B-cell lymphoma 2) and Bax (Bcl2-associated x) genes and caspase-3/7 activation in rat hippocampus and frontal cortex. Twenty-eight male Wistar rats weighing 200-250 g were randomly divided into four groups. Control group received saline and three other groups received cadmium at doses of 1, 2 and 4 mg/kg (body weight) for 15 successive days...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28397504/-chemotherapy-related-cognitive-impairment-in-patients-with-hodgkin-lymphoma-pathophysiology-and-risk-factors
#18
D Fayette, Ľ Gahérová, H Móciková, J Marková, T Kozák, J Horáček
BACKGROUND: Cognitive impairment (impairment of memory, attention, or concentration) is documented in 17-75% of patients with various malignancies treated with chemotherapeutic agents that worsen quality of life. CRCI affects patients of all ages. The impairment of cognitive function in connection with chemotherapy is usually mild, but an event. relationship with dementia remains to be confirmed. Chemotherapy in combination with radiotherapy in Hodgkin lymphoma can cure 80-90% of patients...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28373844/effects-of-ketamine-on-levels-of-inflammatory-cytokines-il-6-il-1%C3%AE-and-tnf-%C3%AE-in-the-hippocampus-of-mice-following-acute-or-chronic-administration
#19
Yanning Li, Ruipeng Shen, Gehua Wen, Runtao Ding, Ao Du, Jichuan Zhou, Zhibin Dong, Xinghua Ren, Hui Yao, Rui Zhao, Guohua Zhang, Yan Lu, Xu Wu
Ketamine is an injectable anesthetic and recreational drug of abuse commonly used worldwide. Many experimental studies have shown that ketamine can impair cognitive function and induce psychotic states. Neuroinflammation has been suggested to play an important role in neurodegeneration. Meanwhile, ketamine has been shown to modulate the levels of inflammatory cytokines. We hypothesized that the effects of ketamine on the central nervous system are associated with inflammatory cytokines. Therefore, we set out to establish acute and chronic ketamine administration models in C57BL/6 mice, to evaluate spatial recognition memory and emotional response, to analyze the changes in the levels of the inflammatory cytokines interleukin-6 (IL-6), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) in the mouse hippocampus, employing behavioral tests, Western blot, quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) and immunohistochemistry...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28330719/nicotinamide-mononucleotide-inhibits-jnk-activation-to-reverse-alzheimer-disease
#20
Zhiwen Yao, Wenhao Yang, Zhiqiang Gao, Peng Jia
Amyloid-β (Aβ) oligomers have been accepted as major neurotoxic agents in the therapy of Alzheimer's disease (AD). It has been shown that the activity of nicotinamide adenine dinucleotide (NAD+) is related with the decline of Aβ toxicity in AD. Nicotinamide mononucleotide (NMN), the important precursor of NAD+, is produced during the reaction of nicotinamide phosphoribosyl transferase (Nampt). This study aimed to figure out the potential therapeutic effects of NMN and its underlying mechanisms in APPswe/PS1dE9 (AD-Tg) mice...
March 19, 2017: Neuroscience Letters
keyword
keyword
32139
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"