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https://www.readbyqxmd.com/read/28727483/pharmacological-treatment-of-tardive-dyskinesia-recent-developments
#1
Stanley N Caroff, E Cabrina Campbell, Benjamin Carroll
Tardive dyskinesia (TD) occurs in patients receiving antipsychotic treatment with dopamine receptor antagonists. Despite the prevalence of TD and its negative impact on patients' lives, there has been a lack of approved treatments and limited evidence from controlled trials of pharmacological treatment. Areas covered: PubMed was searched for English-language papers published during 2007-2016 using terms "tardive dyskinesia" or "drug-induced movement disorder", and "treatment". Studies evaluating pharmacological agents for the treatment of TD were selected...
July 20, 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/28727343/-hypophosphatasia
#2
Eleni Tsiantouli, Andrea Trombetti, Serge Ferrari
Hypophosphatasia (HPP) is an inborn metabolic bone disorder caused by loss-of-function mutations in the gene encoding tissue nonspecific alkaline phosphatase (TNSALP). The adult form can be mistaken with common osteoporosis and/or present recurrent metatarsal fractures, skeletal and muscular pain. Subtrochanteric femoral pseudofractures resembling bisphosphonate-associated atypical femoral fractures can also be present, and Bps are therefore contraindicated in HPP. Early tooth loss and renal calcifications can orient towards the diagnosis...
April 19, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28724485/effects-of-breeding-configuration-on-maternal-and-weanling-behavior-in-laboratory-mice
#3
Gillian C Braden, Skye Rasmussen, Sebastien Monette, Ravi J Tolwani
Although numerous studies have evaluated the effect of housing density on the wellbeing of laboratory mice, little is known about the effect of breeding configuration on mouse behavior. The 8th edition of the Guide for the Care and Use of Laboratory Animals lists the recommended minimal floor area per animal for a female mouse and her litter as 51 in.2 We sought to determine the effects of pair, trio, and harem breeding configurations on the maternal and weanling behavior of C57BL/6J (B6) and 129S6/SvEvTac (129) mice on the basis of nest scores and performance in pup retrieval tests, open-field test (OFT), elevated plus maze, and tail suspension test; we concurrently evaluated cage microenvironment, reproductive indices, and anatomic and clinical pathology...
July 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28716709/isolation-and-characterization-of-the-5-flanking-region-of-the-human-pdxk-gene
#4
ShuoHao Huang, ZhengQing Liu, ZhenQiao Ma, JianYun Zhang, LongQuan Huang
Pyridoxal kinase is a key enzyme for the biosynthesis of pyridoxal 5'-phosphate. Pyridoxal 5'-phosphate is the catalytically active form of vitamin B6, and acts as a cofactor in >140 different enzyme reactions. It is still unknown how the kinase synthesis is regulated in the cells, and nothing has been reported about the gene promoter. In the present study, based on the bioinformatics analysis of the 5'-flanking region of the human PDXK gene, we cloned the promoter region by PCR. Through the construction of a series of luciferase expression vectors containing the human PDXK promoter region, we characterized the promoter in terms of its structure and function...
July 14, 2017: Gene
https://www.readbyqxmd.com/read/28716455/the-vitamin-b6-paradox-supplementation-with-high-concentrations-of-pyridoxine-leads-to-decreased-vitamin-b6-function
#5
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/28715493/host-genetics-play-a-critical-role-in-controlling-cd8-t-cell-function-and-lethal-immunopathology-during-chronic-viral-infection
#6
Allison F Christiaansen, Megan E Schmidt, Stacey M Hartwig, Steven M Varga
Effective CD8 T cell responses are vital for the control of chronic viral infections. Many factors of the host immune response contribute to the maintenance of effector CD8 T cell responses versus CD8 T cell exhaustion during chronic infection. Specific MHC alleles and the degree of MHC heterogeneity are associated with enhanced CD8 T cell function and viral control during human chronic infection. However, it is currently unclear to what extent host genetics influences the establishment of chronic viral infection...
July 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28711224/the-radioprotector-ortho-phospho-l-tyrosine-ptyr-attenuates-the-side-effects-of-fractionated-irradiation-in-retinoblastoma-mouse-models-but-also-decreases-the-local-tumour-control
#7
Alexander V Tschulakow, Klaus Dittmann, Stephan M Huber, Dominik Klumpp, Benjamin Stegen, Ulrich Schraermeyer, H Peter Rodemann, Sylvie Julien-Schraermeyer
BACKGROUND: Radiotherapy (RT) is used to treat retinoblastoma (Rb), the most frequent ocular tumour in children. Besides eradicating the tumour, RT can cause severe side effects including secondary malignancies. This study aimed to define whether the radioprotector ortho-phospho-L-tyrosine (pTyr) prevents RT-induced side effects and affects local tumour control in a xenograft and a genetic orthotopic Rb mouse model. METHODS: B6;129-Rb1tm3Tyj/J (Rb(+/-)) and Y79-Rb cell-xenografted nude mice were fractionated external beam irradiated (15 fractions of 5Gy 6MV photons during 3weeks) with or without pTyr pre-treatment (100mg/kg BW, 16h prior to each irradiation)...
July 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28710938/lack-of-effects-of-a-sobering-product-eezup-on-the-blood-ethanol-and-congener-alcohol-concentration
#8
Cora Wunder, Sarah Hain, Sarah C Koelzer, Alexander Paulke, Marcel A Verhoff, Stefan W Toennes
INTRODUCTION: The lifestyle product 'Eezup!' appeared on the German market and promised to normalize energy metabolism. Among vitamins (B1, B2, B6, C, E and zinc), rice protein and fructose the addition of alcohol dehydrogenase and catalase enzymes is a novel approach. The product was advertised as capable of boosting the rate of alcohol elimination. METHODS: Seventeen subjects (11 men, 6 women, 19-58 years old), participated in a two-way crossover drinking study...
June 28, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28710252/an-unbiased-linkage-approach-reveals-that-the-p53-pathway-is-coupled-to-nk-cell-maturation
#9
Roxanne Collin, Charles St-Pierre, Lorie Guilbault, Victor Mullins-Dansereau, Antonia Policheni, Fanny Guimont-Desrochers, Adam-Nicolas Pelletier, Daniel H Gray, Elliot Drobetsky, Claude Perreault, Erin E Hillhouse, Sylvie Lesage
Natural killer cells constitute potent innate lymphoid cells that play a major role in both tumor immunosurveillance and viral clearance via their effector functions. A four-stage model of NK cell functional maturation has been established according to the expression of CD11b and CD27, separating mature NK (mNK) cells into distinct populations that exhibit specific phenotypic and functional properties. To identify genetic factors involved in the regulation of NK cell functional maturation, we performed a linkage analysis on F2 (B6...
July 14, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28701623/molecular-characterization-of-the-ribosomal-dna-unit-of-sarcocystis-singaporensis-sarcocystis-zamani-and-sarcocystis-zuoi-from-rodents-in-thailand
#10
Vichan Watthanakaiwan, Manakorn Sukmak, Kriengsak Hamarit, Nongnid Kaolim, Worawidh Wajjwalku, Yuttamol Muangkram
Sarcocystis species are heteroxenous cyst-forming coccidian protozoan parasites with a wide host range, including rodents. In this study, Sarcocystis spp. samples were isolated from Bandicota indica, Rattus argentiventer, R. tiomanicus and R. norvegicus across five provinces of Thailand. Two major groups of Sarcocystis cysts were determined in this study: large and small cysts. Sequence comparisons and phylogenetic analyses based on the partial sequences of 28S ribosomal DNA, the large cysts showed that the highest identity value (99%) with the S...
July 13, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28698672/metabolic-effects-of-clenbuterol-and-salbutamol-on-pork-meat-studied-using-internal-extractive-electrospray-ionization-mass-spectrometry
#11
Haiyan Lu, Hua Zhang, Tenggao Zhu, Yipo Xiao, Shaoxian Xie, Haiwei Gu, Meng Cui, Liping Luo
Direct mass spectrometry analysis of metabolic effects of clenbuterol and salbutamol on pork quality at the molecular level is incredibly beneficial for food regulations, public health and the development of new anti-obesity drugs. With internal extractive electrospray ionization mass spectrometry (iEESI-MS), nutrients including creatine, amino acids, L-carnitine, vitamin B6, carnosine and phosphatidylcholines in pork tissue were identified, without sample pretreatment, using collision-induced dissociation (CID) experiments and by comparison with authentic compounds...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28697391/nutrients-in-one-carbon-metabolism-and-urinary-arsenic-methylation-in-the-national-health-and-nutrition-examination-survey-nhanes-2003-2004
#12
Margaret Kurzius-Spencer, Vanessa da Silva, Cynthia A Thomson, Vern Hartz, Chiu-Hsieh Hsu, Jefferey L Burgess, Mary Kay O'Rourke, Robin B Harris
Exposure to inorganic arsenic (inAs), a potent toxicant, occurs primarily through ingestion of food and water. The efficiency with which it is methylated to mono and dimethyl arsenicals (MMA and DMA) affects toxicity. Folate, vitamins B12 and B6 are required for 1C metabolism, and studies have found that higher levels of these nutrients increase methylation capacity and are associated with protection against adverse health effects from inAs, especially in undernourished populations. Our aim was to determine whether 1C-related nutrients are associated with greater inAs methylation capacity in a general population sample with overall adequate nutrition and low levels of As exposure...
July 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28689805/the-importance-of-folate-vitamins-b6-and-b12-for-the-lowering-of-homocysteine-concentrations-for-patients-with-recurrent-pregnancy-loss-and-mthfr-mutations
#13
Danielius Serapinas, Evelina Boreikaite, Agne Bartkeviciute, Rita Bandzeviciene, Mindaugas Silkunas, Daiva Bartkeviciene
In patients with MTHFR (methylenetetrahydrofolate reductase) mutations and hyperhomocysteinemia, recurrent pregnancy loss is a frequent feature. The aim of the study was to evaluate the impact of folic acid, vitamins B6 and B12 supplementation for the lowering of total homocysteine concentrations and pregnancy. 16 patients who had had 3 or more miscarriages and MTHFR mutations were used in the study. They received methylfolate (5mg/day), vitamin B6 (50mg/day) and vitamin B12 (1mg/week). Supplementation induced a decrease in homocysteine from 19...
July 6, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28686488/contribution-of-both-b-cell-intrinsic-alterations-as-well-as-non-hematopoietic-derived-factors-in-the-enhanced-immune-response-of-the-nod-mouse
#14
Viqar Showkat Banday, Radha Thyagarajan, Kristina Lejon
The underlying cellular and molecular mechanism for the development of Type 1 diabetes is still to be fully revealed. We have previously demonstrated that the NOD mouse, a model for Type 1 diabetes, display a prolonged and enhanced immune response to both self and non-self-antigens. The molecular explanation for this defect however, has not been determined. In this study we immunized NOD and C57BL/6 (B6) with the conventional antigen i.e. hen egg lysozyme (HEL) and analyzed B cell activation, germinal center reaction and antibody clearance...
July 7, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28686246/an-inhibition-mechanism-of-dihydromyricetin-on-tyrosinase-and-the-joint-effects-of-vitamins-b6-d3-or-e
#15
Meihui Fan, Guowen Zhang, Junhui Pan, Deming Gong
Dihydromyricetin (DMY), a natural flavonoid, was found to effectively inhibit tyrosinase activity in a mixed-type manner with an IC50 value of (3.66 ± 0.14) × 10(-5) mol L(-1). DMY combined with the dietary vitamin D3 at lower concentrations exhibited a synergistic effect on the inhibition of tyrosinase. The formation of a DMY-tyrosinase complex led to fluorescence quenching and conformational changes of tyrosinase, which was driven mainly by hydrophobic interactions and hydrogen bonds. The molecular simulation further found that DMY inserted into the active pocket of tyrosinase interacted with amino acid residues Tyr78, His85, and Ala323, occupying the catalytic center of tyrosinase to hinder entrance of the substrate, leading to the inhibition of tyrosinase...
July 19, 2017: Food & Function
https://www.readbyqxmd.com/read/28674784/vitamin-b6-intake-and-the-risk-of-incident-kidney-stones
#16
Pietro Manuel Ferraro, Eric N Taylor, Giovanni Gambaro, Gary C Curhan
Higher vitamin B6 intake might reduce urinary excretion of oxalate, one of the major determinants of risk for calcium oxalate kidney stones. Previous studies investigating the association between intake of vitamin B6 and risk of stones found conflicting results. We sought to investigate the association in three large prospective cohorts. We prospectively examined the association in the Health Professionals Follow-up Study (HPFS; n = 42,919 men), Nurses' Health Study I (NHS I; n = 60,003 older women), and Nurses' Health Study II (NHS II; n = 90,629 younger women)...
July 3, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28672791/risk-of-deficiency-in-multiple-concurrent-micronutrients-in-children-and-adults-in-the-united-states
#17
Julia K Bird, Rachel A Murphy, Eric D Ciappio, Michael I McBurney
Certain population sub-groups in the United States are vulnerable to micronutrient malnutrition. Nationally representative data from the National Health and Nutrition Examination Survey (NHANES) describing the biochemical status of vitamins A, B6, B12, C, D, E, folate, and anemia, were aggregated to determine the overall risk of multiple concurrent deficiencies in U.S. children and adults (n = 15,030) aged >9 years. The prevalence of deficiency risk according to socio-demographic, life-stage, dietary supplement use, and dietary adequacy categories was investigated...
June 24, 2017: Nutrients
https://www.readbyqxmd.com/read/28671236/vitamin-b-supplementation-what-s-the-right-choice-for-your-patients
#18
Laura G Leahy
As many patients turn to vitamins and supplements to enhance energy, relieve fatigue, or generally feel better, it is important to understand the connection between the B vitamins and psychiatric symptomatology. Vitamins B6, B8, and B12 have been shown not only to reduce psychiatric symptoms but also shorten the duration of illness. Vitamin B9, also known as folate or folic acid, has also been associated with psychiatric symptoms. However, when patients lack a specific genetic enzyme, which converts folate/folic acid to its most usable form, L-methylfolate, the neuroprotective and neuropsychiatric benefits are lost...
July 1, 2017: Journal of Psychosocial Nursing and Mental Health Services
https://www.readbyqxmd.com/read/28670575/cd8-memory-t-cell-inflation-renders-compromised-cd4-t-cell-dependent-cd8-t-cell-immunity-via-na%C3%A3-ve-t-cell-anergy
#19
Aizhang Xu, Andrew Freywald, Yufeng Xie, Zejun Li, Jim Xiang
Whether inflation of CD8(+) memory T (mT) cells, which is often derived from repeated prime-boost vaccinations or chronic viral infections in the elderly, would affect late CD8(+) T-cell immunity is a long-standing paradox. We have previously established an animal model with mT-cell inflation by transferring ConA-stimulated monoclonal CD8(+) T cells derived from Ova-specific T-cell-receptor transgenic OTI mice into irradiation-induced lymphopenic B6 mice. In this study, we also established another two animal models with mT-cell inflation by transferring, 1) ConA-stimulated monoclonal CD8(+) T cells derived from lymphocytic choriomeningitis virus glycoprotein-specific T-cell-receptor transgenic P14 mice, and 2) ConA-stimulated polyclonal CD8(+) T cells derived from B6...
2017: ImmunoTargets and Therapy
https://www.readbyqxmd.com/read/28668513/toll-like-receptors-nf-%C3%AE%C2%BAb-and-il-27-mediate-adenosine-a2a-receptor-signaling-in-btbr-t-itpr3-tf-j-mice
#20
Sheikh F Ahmad, Mushtaq A Ansari, Ahmed Nadeem, Saleh A Bakheet, Laila Yousef Al-Ayadhi, Sabry M Attia
Autism is a predominant neurodevelopmental disorder characterized by impaired communication, social deficits, and repetitive behaviors. Recent research has proposed that the impairment of innate immunity may play an important role in autism. Toll-like receptors (TLRs) are potential therapeutic targets against neuroinflammation. The BTBR T(+) Itpr3(tf/)J (BTBR) mouse is a well-known model of autism, showing repetitive behaviors such as cognitive inflexibility and increased grooming as compared to C57BL/6 (B6) mice...
June 29, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
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