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Lithium dosing

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https://www.readbyqxmd.com/read/28104366/effects-of-acute-and-chronic-quercetin-administration-on-methylphenidate-induced-hyperlocomotion-and-oxidative-stress
#1
Luiz K S Kanazawa, Débora D Vecchia, Etiéli M Wendler, Palloma de A S Hocayen, Paulo S Berão, Manuela L de Mélo, Francislaine A Dos Reis Lívero, Claudia Rita Corso, Maria Carolina Stipp, Alexandra Acco, Roberto Andreatini
AIMS: Increases in protein kinase C (PKC) and oxidative stress have been related to mania. Drugs with antioxidant effects or inhibitory actions on PKC may have antimanic effects. The flavonoid quercetin has antioxidant and PKC-inhibiting effects that resemble those of lithium, the first-line treatment for mania in bipolar disorder. We hypothesized that quercetin may have antimanic-like effects in an animal model. MAIN METHODS: In the present study, we investigated the effects of acute and chronic treatment with quercetin (2...
January 16, 2017: Life Sciences
https://www.readbyqxmd.com/read/28102229/the-neurosteroidogenic-enzyme-5%C3%AE-reductase-mediates-psychotic-like-complications-of-sleep-deprivation
#2
Roberto Frau, Valentina Bini, Alessio Soggiu, Simona Scheggi, Alessandra Pardu, Silvia Fanni, Paola Roncada, Monica Puligheddu, Francesco Marrosu, Donatella Caruso, Paola Devoto, Marco Bortolato
Acute sleep deprivation (SD) can trigger or exacerbate psychosis- and mania-related symptoms; the neurobiological basis of these complications, however, remains elusive. Given the extensive involvement of neuroactive steroids in psychopathology, we hypothesized that the behavioral complications of SD may be contributed by 5α-reductase (5αR), the rate-limiting enzyme in the conversion of progesterone into the neurosteroid allopregnanolone. We first tested whether rats exposed to SD may exhibit brain-regional alterations in 5αR isoenzymes and neuroactive steroid levels; then, we assessed whether the behavioral and neuroendocrine alterations induced by SD may be differentially modulated by the administration of the 5αR inhibitor finasteride, as well as progesterone and allopregnanolone...
January 19, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28088383/evaluating-the-role-of-astrocytes-on-%C3%AE-estradiol-effect-on-seizures-of-pilocarpine-epileptic-model
#3
Masoumeh Sarfi, Mahmoud Elahdadi Salmani, Iran Goudarzi, Taghi Lashkar Boluki, Kataneh Abrari
Epilepsy with periodic and unpredictable seizures is associated with hippocampal glutamate toxicity and tissue reorganization. Astrocytes play an important role in mediating the neuroprotective effects of estradiol and reducing seizure severity. Accordingly, the protective effects of low and high doses of estradiol on behavioral, astrocytic involvement and neuronal survival aspects of Pilocarpine-induced epilepsy were investigated. Lithium- Pilocarpine (30mg/kg) model was used to provoke epilepsy. Βeta-estradiol (2,40μg/ µl) was injected subcutaneously from 48 before to 48h after seizure induction...
January 11, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28074016/cari-7a-development-and-validation
#4
Kyle Copeland
Aircrew members can be exposed to higher annual doses of natural ionizing radiation than members of the general population in most parts of the world. The principal ionizing radiation to which they are exposed is galactic cosmic radiation (GCR). Among the particles present in the primary spectrum are heavy ions: relativistic nuclei of lithium and heavier elements. These ions have very high radiation weighting factors and can contribute significantly to the effective dose at altitudes above the Pfotzer maximum...
January 10, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28054457/doping-control-analysis-of-lithium-in-horse-urine-and-plasma-by-inductively-coupled-plasma-mass-spectrometry
#5
Timmy L S Choi, Jenny K Y Wong, Emmie N M Ho, Wai Him Kwok, Gary N W Leung, Peter Curl, Terence S M Wan
Lithium salts are commonly prescribed to treat bipolar disorder in humans. They are effective for the treatment of acute mania and the prophylaxis of manic relapses through long-term use. Although there is no reported legitimate therapeutic use of lithium in horses, its potential mood stabilizing effect, low cost and being readily available make lithium salt a potential agent of abuse in equine sports, especially for equestrian competition horses. Lithium can be found in soil, plants and water, as such it is naturally present in the equine body, thus a threshold is necessary to control its misuse in horses...
January 5, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28048424/su-f-t-426-measurement-of-dose-enhancement-due-to-backscatter-from-modern-dental-materials
#6
M Hurwitz, T Tso, S Lee, E Rosen, D Margalit, C Williams
PURPOSE: High-density materials used in dental restoration can cause significant localized dose enhancement due to electron backscatter in head-and-neck radiotherapy, increasing the risk of mucositis. The materials used in prosthetic dentistry have evolved in the last decades from metal alloys to ceramics. We aim to determine the dose enhancement caused by backscatter from currently-used dental materials. METHODS: Measurements were performed for three different dental materials: lithium disilicate (Li2 Si2 O5 ), zirconium dioxide (ZrO2 ), and gold alloy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046216/su-f-p-47-estimation-of-skin-dose-by-performing-the-measurements-on-cylindrical-phantom
#7
S Bosma, M Sanders, P Aryal
PURPOSE: To evaluate the skin dose by performing the measurements on cylindrical phantom with 6X beam. METHODS: A cylindrical phantom was used to best model a patient surface. The source to surface distance (SSD) was 100 cm at phantom surface along central axis (CAX). The EBT2 films were cut into 2×2 cm2 pieces. Each piece of film was placed at CAX on phantom surface for each measurement at 0°, 15°, 30°, 45°, 60°, 75°, and 90° gantry angles for field sizes of 5×5, 10×10, 15×15, and 20×20 cm(2) respectively...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28040641/psychopharmacological-drug-utilization-patterns-in-pregnant-women-with-bipolar-disorder-a-nationwide-register-based-study
#8
S C Broeks, H Thisted Horsdal, K Glejsted Ingstrup, C Gasse
BACKGROUND: Bipolar disorder is often associated with a lifetime indication for treatment with psychotropic drugs, thus pregnant women face the dilemma whether to continue treatment or not. This study describes the psychopharmacological drug utilization patterns among women with bipolar disorder from 12 months preconception to 12 months postpartum. METHODS: We conducted a register-based cohort study among all Danish women aged 15-55 with a diagnosis of bipolar disorder, who gave birth to their first and singleton child between January 1997 and December 2012...
December 8, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28002662/association-between-lithium-use-and-risk-of-alzheimer-s-disease
#9
Chin Cheng, Peter Zandi, Elizabeth Stuart, Ching-Heng Lin, Pei-Yu Su, G Caleb Alexander, Tsuo-Hung Lan
OBJECTIVE: Current evidence for the association between use of lithium and risk of dementia is mixed. The objective of this study was to assess the risk of Alzheimer's disease associated with use of lithium. METHODS: A population-based, nested case-control study was conducted using data from the National Health Insurance Research Database in 2002 covering 24.5 million beneficiaries of the Taiwan National Health Insurance Program from January 1, 1997, to December 31, 2009...
December 20, 2016: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/27999548/low-dose-lithium-stabilizes-human-endothelial-barrier-by-decreasing-mlc-phosphorylation-and-universally-augments-cholinergic-vasorelaxation-capacity-in-a-direct-manner
#10
Bert Bosche, Marek Molcanyi, Soham Rej, Thorsten R Doeppner, Mark Obermann, Daniel J Müller, Anupam Das, Jürgen Hescheler, R Loch Macdonald, Thomas Noll, Frauke V Härtel
Lithium at serum concentrations up to 1 mmol/L has been used in patients suffering from bipolar disorder for decades and has recently been shown to reduce the risk for ischemic stroke in these patients. The risk for stroke and thromboembolism depend not only on cerebral but also on general endothelial function and health; the entire endothelium as an organ is therefore pathophysiologically relevant. Regardless, the knowledge about the direct impact of lithium on endothelial function remains poor. We conducted an experimental study using lithium as pharmacologic pretreatment for murine, porcine and human vascular endothelium...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27958667/thermoluminescence-characterization-of-ag-doped-li2-b4-o7-single-crystal-materials
#11
D Kuralı, E Ekdal Karalı, A Kelemen, V Holovey, N Can, T Karalı
In this study, the thermoluminescence (TL) characteristics of Ag-doped and undoped lithium tetraborate (Li2 B4 O7 , LTB) materials, grown using the Czochralski method, were reported. The TL properties of LTB:Ag, such as glow curve structure, dose response, fading and reproducibility, were investigated. The glow curve of the Li2 B4 O7 :Ag single crystal consists of four peaks located at approximately 75, 130, 190 and 275°C; in undoped LTB, the single crystal shows a broad glow curve with peaks at 65, 90, 125, 160 and 190°C using a heating rate of 5°C/s in the 50-350°C temperature region...
December 13, 2016: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/27951419/lithium-induced-oxidative-stress-and-related-damages-in-testes-and-heart-in-male-rats-the-protective-effects-of-malva-sylvestris-extract
#12
Anouar Ben Saad, Ilhem Rjeibi, Hichem Alimi, Sana Ncib, Amani Smida, Nacim Zouari, Lazhar Zourgui
Malva sylvestris is widely used in Mediterranean and European traditional medicine and ethnoveterinary for the treatment of various diseases. This study, carried out on male Wistar rats, evaluates the beneficial effects of Malva sylvestris extract upon lithium carbonate-induced damages in testes and heart. For this purpose, Malva sylvestris extract at a dose of 0.2g/kg was orally administrated, followed by 25mg/kg lithium carbonate (intraperitoneal injection, twice daily). Lithium carbonate treatment significantly (p<0...
December 9, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27917448/lithium-reversibly-inhibits-schwann-cell-proliferation-and-differentiation-without-inducing-myelin-loss
#13
Gonzalo Piñero, Randall Berg, Natalia Denise Andersen, Patricia Setton-Avruj, Paula Virginia Monje
This study was undertaken to examine the bioactivity, specificity, and reversibility of lithium's action on the growth, survival, proliferation, and differentiation of cultured Schwann cells (SCs). In isolated SCs, lithium promoted a state of cell cycle arrest that featured extensive cell enlargement and c-Jun downregulation in the absence of increased expression of myelin-associated markers. In addition, lithium effectively prevented mitogen-induced S-phase entry without impairing cell viability. When lithium was administered together with differentiating concentrations of cyclic adenosine monophosphate (cAMP) analogs, a dramatic inhibition of the expression of the master regulator of myelination Krox-20 was observed...
December 5, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27917283/protective-effects-of-nimodipine-and-lithium-against-aluminum-induced-cell-death-and-oxidative-stress-in-pc12-cells
#14
Jamileh Saberzadeh, Mehdi Omrani, Mohammad Ali Takhshid
OBJECTIVES: The role of aluminum (Al) in the pathogenesis of neurodegenerative diseases has been implicated in several studies. However, the exact mechanisms of cytotoxic effects of Al have not been elucidated yet. The aim of this study was to investigate the effect of L-type calcium channel antagonist, nimodipine (NM), and lithium chloride (LiCl) on Al-induced toxicity in PC12 cells. MATERIALS AND METHODS: PC12 cells were treated with Al-maltolate (Almal) in the presence and absence of different concentrations of NM (50-150 μm) and/or LiCl (0...
November 2016: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/27902528/increased-brain-lactate-during-depressive-episodes-and-reversal-effects-by-lithium-monotherapy-in-drug-naive-bipolar-disorder-a-3-t-1h-mrs-study
#15
Rodrigo Machado-Vieira, Marcus V Zanetti, Maria C Otaduy, Rafael T De Sousa, Marcio G Soeiro-de-Souza, Alana C Costa, Andre F Carvalho, Claudia C Leite, Geraldo F Busatto, Carlos A Zarate, Wagner F Gattaz
OBJECTIVE: Mitochondrial dysfunction and energy metabolism impairment are key components in the pathophysiology of bipolar disorder (BD) and may involve a shift from aerobic to anaerobic metabolism. Measurement of brain lactate in vivo using proton magnetic resonance spectroscopy (H-MRS) represents an important tool to evaluate mitochondrial and metabolic dysfunction during mood episodes, as well as to monitor treatment response. To date, very few studies have quantified brain lactate in BD...
February 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/27900734/lithium-side-effects-and-toxicity-prevalence-and-management-strategies
#16
REVIEW
Michael Gitlin
Despite its virtually universal acceptance as the gold standard in treating bipolar disorder, prescription rates for lithium have been decreasing recently. Although this observation is multifactorial, one obvious potential contributor is the side effect and toxicity burden associated with lithium. Additionally, side effect concerns assuredly play some role in lithium nonadherence. This paper summarizes the knowledge base on side effects and toxicity and suggests optimal management of these problems. Thirst and excessive urination, nausea and diarrhea and tremor are rather common side effects that are typically no more than annoying even though they are rather prevalent...
December 2016: International Journal of Bipolar Disorders
https://www.readbyqxmd.com/read/27894049/effect-of-co-doping-of-sodium-on-the-thermoluminescence-dosimetry-properties-of-copper-doped-zinc-lithium-borate-glass-system
#17
REVIEW
A Saidu, H Wagiran, M A Saeed, Y S M Alajerami, A B A Kadir
The effect of sodium as a co-dopant on the thermoluminescence (TL) properties of copper-doped zinc lithium borate (ZLB: Cu) subjected to Co-60 gamma radiation is reported in this study. TL intensity is enhanced with the introduction of sodium in ZLB: Cu. The obtained glow curve is simple with a single peak. The annealing procedure and the best heating rate for the proposed thermoluminescent dosimeter (TLD) are established, and the phosphor is reusable. The TL response within the dose range of 0.5-1000Gy is investigated...
December 2016: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/27882645/long-term-lithium-treatment-increases-intracellular-and-extracellular-brain-derived-neurotrophic-factor-bdnf-in-cortical-and-hippocampal-neurons-at-subtherapeutic-concentrations
#18
Vanessa J De-Paula, Wagner F Gattaz, Orestes V Forlenza
OBJECTIVES: The putative neuroprotective effects of lithium treatment rely on the fact that it modulates several homeostatic mechanisms involved in the neurotrophic response, autophagy, oxidative stress, inflammation, and mitochondrial function. Lithium is a well-established therapeutic option for the acute and long-term management of bipolar disorder and major depression. The aim of this study was to evaluate the effects of subtherapeutic and therapeutic concentrations of chronic lithium treatment on brain-derived neurotrophic factor (BDNF) synthesis and secretion...
December 2016: Bipolar Disorders
https://www.readbyqxmd.com/read/27871720/-guidelines-for-the-prescription-of-mood-stabilizers-for-adolescents-a-literature-review
#19
G Munch, N Godart
INTRODUCTION: Adolescence is a unique phase of the human developmental process. In adolescents, psychotropic medications may have different efficacy and tolerance profiles compared to those at other stages of the lifespan. Mood stabilizers are a complex pharmacological category including lithium, some anticonvulsants, and some second generation antipsychotics. Focusing on this class of pharmacological agents, we aim to answer the following questions: in which indications and according to which modalities should mood stabilizers be prescribed during adolescence? METHODS: Information was sought from the websites of the French Haute Autorité de santé (HAS) and Agence nationale de sécurité du médicament et des produits de santé (ANSM), the American Food and Drug Administration (FDA) and the British National Institute for Health and Clinical Excellence (NICE)...
November 18, 2016: L'Encéphale
https://www.readbyqxmd.com/read/27865605/population-pharmacokinetic-model-of-lithium-and-drug-compliance-assessment
#20
Isabel Pérez-Castelló, Víctor Mangas-Sanjuan, Ignacio González-García, Isabel Gonzalez-Alvarez, Marival Bermejo, Jose Luis Marco-Garbayo, Iñaki F Trocóniz
Population pharmacokinetic analysis of lithium during therapeutic drug monitoring and drug compliance assessment was performed in 54 patients and 246 plasma concentrations levels were included in this study. Patients received several treatment cycles (1-9) and one plasma concentration measurement for each patient was obtained always before starting next cycle (pre-dose) at steady state. Data were analysed using the population approach with NONMEM version 7.2. Lithium measurements were described using a two-compartment model (CL/F=0...
December 2016: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
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