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Pyridoxine

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https://www.readbyqxmd.com/read/28097080/immunoglobulin-m-nephropathy-in-a-patient-with-wilson-s-disease
#1
Zain Ul Abideen, Zoya Sajjad, Asna Haroon Khan, Nadira Mamoon, Muhammad Bilal, Khaja Hameeduddin Mujtaba Quadri
Immunoglobulin M nephropathy (IgMN) is characterized by the deposition of immunoglobulin M in a dominant distribution in the renal glomeruli. Primary immunoglobulin M nephropathy is diagnosed after consistent light microscopy (LM), immunofluorescence (IF), electron microscopy (EM) results, and exclusion of known systemic disorders causing immunoglobulin M deposition in the glomeruli. The secondary disease has been reported with a few conditions though it has never been reported with any primary disease of the liver...
December 13, 2016: Curēus
https://www.readbyqxmd.com/read/28095734/entrapment-efficiency-of-pyridoxine-hydrochloride-in-unilamellar-liposomes-experimental-versus-model-generated-data
#2
Heba Abd-El-Azim, Alyaa Ramadan, Noha Nafee, Nawal Khalafallah
The present study investigates the effect of the preparation method (four methods) and formulation additives (propylene glycol (PG) and cholesterol (CH)) on the entrapment efficiency (EE) of pyridoxine hydrochloride (vitamin B6 (VB6)), representing hydrophilic water-soluble low permeable vitamins, in unilamellar liposomes. The main aim is to compare determined EE with predicted values generated using a web-published, computational model. Results showed that among the different preparation methods, modified film hydration showed significantly higher EE (p < 0...
January 18, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/28090157/pharmaceutical-approval-update
#3
Mary Choy
Olaratumab (Lartruvo) for the treatment of soft tissue sarcoma; bezlotoxumab (Zinplava) for use with an antibiotic to reduce recurrence of C. difficile infection; and doxylamine succinate/pyridoxine hydrochloride (Bonjesta) for the treatment of nausea and vomiting during pregnancy.
January 2017: P & T: a Peer-reviewed Journal for Formulary Management
https://www.readbyqxmd.com/read/28088730/dramatic-response-to-pyridoxine-in-a-girl-with-absence-epilepsy-with-ataxia-caused-by-a-de-novo-cacna1a-mutation
#4
Xiaoping Du, You Chen, Yongxiong Zhao, Wei Luo, Zhidong Cen, Weicheng Hao
No abstract text is available yet for this article.
January 3, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28087462/impact-of-disease-linked-mutations-targeting-the-oligomerization-interfaces-of-aldehyde-dehydrogenase-7a1
#5
David A Korasick, John J Tanner, Michael T Henzl
Aldehyde dehydrogenase 7A1 (ALDH7A1) is involved in lysine catabolism, catalyzing the oxidation of α-aminoadipate semialdehyde to α-aminoadipate. Certain mutations in the ALDH7A1 gene, which are presumed to reduce catalytic activity, cause an autosomal recessive seizure disorder known as pyridoxine-dependent epilepsy (PDE). Although the genetic association between ALDH7A1 and PDE is well established, little is known about the impact of PDE-mutations on the structure and catalytic function of the enzyme. Herein we report the first study of the molecular consequences of PDE mutations using purified ALDH7A1 variants...
January 10, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28076940/cervical-ripening-with-self-administered-iso-sorbide-mononitrate-vaginally-in-uncomplicated-singleton-pregnancies-at-39-weeks-gestation-a-double-blind-randomised-controlled-trial
#6
RANDOMIZED CONTROLLED TRIAL
K Attanayake, M Goonewardene
Introduction: Vaginal iso sorbide mononitrate (ISMN) is effective in pre induction cervical ripening in post dated pregnancies. Objectives: To determine the effectiveness and acceptability of ISMN self-administered vaginally at home, in causing cervical ripening in uncomplicated singleton pregnancies at 39 weeks gestation. Methods: Consecutive women with uncomplicated singleton pregnancies, presenting between 01 October 2013 and 31 March 2014, with a modified Bishop score (MBS) of < 5 at a gestational age (GA) of 273 days to the University Obstetric Unit of Teaching Hospital Mahamodera Galle, were allocated by stratified (primip/multip) block randomisation to self-administer vaginally at home every other day, five doses of 60 mg of sustained release form of ISMN (ISMN-SR); (n = 72, cases), or pyridoxine 10 mgs (n=72, controls), from GA 273 to 282 days...
30, 2016: Ceylon Medical Journal
https://www.readbyqxmd.com/read/28070660/treatment-options-for-hyperemesis-gravidarum
#7
REVIEW
Amy Abramowitz, Emily S Miller, Katherine L Wisner
Hyperemesis gravidarum (HG) is a severe and prolonged form of nausea and/or vomiting during pregnancy. HG affects 0.3-2% of pregnancies and is defined by dehydration, ketonuria, and more than 5% body weight loss. Initial pharmacologic treatment for HG includes a combination of doxylamine and pyridoxine. Additional interventions include ondansetron or dopamine antagonists such as metoclopramide or promethazine. The options are limited for women who are not adequately treated with these medications. We suggest that mirtazapine is a useful drug in this context and its efficacy has been described in case studies...
January 9, 2017: Archives of Women's Mental Health
https://www.readbyqxmd.com/read/28069884/purification-of-zika-virus-rna-dependent-rna-polymerase-and-its-use-to-identify-small-molecule-zika-inhibitors
#8
Hong-Tao Xu, Said A Hassounah, Susan P Colby-Germinario, Maureen Oliveira, Clare Fogarty, Yudong Quan, Yingshan Han, Olga Golubkov, Ilinca Ibanescu, Bluma Brenner, Brent R Stranix, Mark A Wainberg
BACKGROUND: The viral RNA-dependent RNA polymerase (RdRp) enzymes of the Flaviviridae family are essential for viral replication and are logically important targets for development of antiviral therapeutic agents. Zika virus (ZIKV) is a rapidly re-emerging human pathogen for which no vaccine or antiviral agent is currently available. METHODS: To facilitate development of ZIKV RdRp inhibitors, we have established an RdRp assay using purified recombinant ZIKV NS5 polymerase...
January 8, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28052111/8-way-randomized-controlled-trial-of-doxylamine-pyridoxine-and-dicyclomine-for-nausea-and-vomiting-during-pregnancy-restoration-of-unpublished-information
#9
Rujun Zhang, Navindra Persaud
OBJECTIVES: We report information about an unpublished 1970s study ("8-way" Bendectin Study) that aimed to evaluate the relative therapeutic efficacy of doxylamine, pyridoxine, and dicyclomine in the management of nausea and vomiting during pregnancy. We are publishing the trial's findings according to the restoring invisible and abandoned trials (RIAT) initiative because the trial was never published. DESIGN: Double blinded, multi-centred, randomized placebo-controlled study...
2017: PloS One
https://www.readbyqxmd.com/read/28039149/lysine-acetylation-regulates-the-activity-of-escherichia-coli-pyridoxine-5-phosphate-oxidase
#10
Jing Gu, Yuanyuan Chen, Hongsen Guo, Manluan Sun, Mingkun Yang, Xude Wang, Xian'en Zhang, Jiaoyu Deng
Nɛ-lysine acetylation is one of the most abundant post-translational modifications in eukaryote and prokaryote. Protein acetylome of Escherichia coli has been screened using mass spectrometry (MS) technology, and many acetylated proteins have been identified, including the pyridoxine 5'-phosphate oxidase (EcPNPOx), but the biological roles played by lysine acetylation in EcPNPOx still remain unknown. In this study, EcPNPOx was firstly overexpressed and purified, and two acetylated lysine residues were identified by the subsequent liquid chromatography-tandem mass spectrometry analysis...
December 29, 2016: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28024289/protective-abilities-of-pyridoxine-in-experimental-oxidative-stress-settings-in-vivo-and-in-vitro
#11
K E Danielyan, A A Simonyan
BACKGROUND: Pyridoxine (Pr, B6) or its active form pyridoxal phosphate (PLP, B6) deficiency promotes oxidative lipid peroxidation and exacerbates the oxidative stress. From the other hand, by our previous experiments we proved that B6 is able strongly inhibit Xanthine Oxidase (XO) activity, which is an enzyme responsible for the formation of uric acid and hydrogen peroxide. METHODS: Cells were cultured by Mattson M. method and treated with 3%% hydrogen peroxide...
December 23, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27999967/high-yield-production-of-aryl-alcohol-oxidase-under-limited-growth-conditions-in-small-scale-systems-using-a-mutant-aspergillus-nidulans-strain
#12
Oscar Pardo-Planas, Rolf A Prade, Mark R Wilkins
Aryl alcohol oxidase (MtGloA) is an enzyme that belongs to the ligninolytic consortium and can play an important role in the bioenergy industry. This study investigated production of an MtGloA client enzyme by a mutant strain of Aspergillus nidulans unable to synthesize its own pyridoxine. Pyridoxine limitation can be used to control cell growth, diverting substrate to protein production. In agitated culture, enzyme production was similar when using media with 1 mg/L and without pyridoxine (26.64 ± 6.14 U/mg mycelia and 26...
December 20, 2016: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/27998308/semilobar-holoprosencephaly-in-a-12-month-old-baby-boy-born-to-a-primigravida-patient-with-type-1-diabetes-mellitus-a-case-report
#13
Pedro Pallangyo, Frederick Lyimo, Paulina Nicholaus, Hilda Makungu, Maria Mtolera, Isaac Mawenya
BACKGROUND: Holoprosencephaly is a rare spectrum of cephalic disorders resulting from a failure or incomplete division of the embryonic forebrain into distinct cerebral hemispheres. It is the most common brain malformation with an incidence of 1:250 during embryogenesis; however, owing to the associated high rates of spontaneous abortion the incidence is 1:16,000 among live deliveries. Pathogenesis of holoprosencephaly is complex and heterogeneous involving genetic abnormalities, teratogenic exposures, and syndromic associations...
December 20, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27987384/salmonella-typhimurium-ptsj-is-a-novel-mocr-like-transcriptional-repressor-involved-in-regulating-the-vitamin-b6-salvage-pathway
#14
Angela Tramonti, Teresa Milano, Caterina Nardella, Martino L di Salvo, Stefano Pascarella, Roberto Contestabile
The vitamin B6 salvage pathway, involving pyridoxine 5'-phosphate oxidase (PNPOx) and pyridoxal kinase (PLK), recycles B6 vitamers from nutrients and protein turnover to produce pyridoxal 5'-phosphate (PLP), the catalytically active form of the vitamin. Regulation of this pathway, widespread in living organisms including humans and many bacteria, is very important to vitamin B6 homeostasis but poorly understood. Although some information is available on the enzymatic regulation of PNPOx and PLK, little is known on their regulation at the transcriptional level...
December 17, 2016: FEBS Journal
https://www.readbyqxmd.com/read/27979196/b-vitamins-carotenoids-and-%C3%AE-%C3%AE-tocopherol-in-raw-and-roasted-nuts
#15
Wolfgang Stuetz, Wiebke Schlörmann, Michael Glei
The concentrations of B-vitamins, carotenoids and tocopherols in nuts may differ between species and might be influenced by roasting. Thiamine, riboflavin, pyridoxine, lutein, zeaxanthin, β-carotene and α-/γ-tocopherol were determined in different varieties of raw and roasted nuts using HPLC (fluorescence/UV-vis detection). The analysis revealed remarkable concentrations of thiamine and pyridoxine in pistachios (57%, 79% of the recommended daily intake/100g (RDI), respectively) and riboflavin in almonds (119% of the RDI)...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27940755/lysine-restriction-and-pyridoxal-phosphate-administration-in-a-nadk2-patient
#16
Frederic Tort, Olatz Ugarteburu, Maria Angeles Torres, Judit García-Villoria, Marisa Girós, Angeles Ruiz, Antonia Ribes
We report the case of a 10-year-old Spanish girl with mutations in NADK2 Prenatal central nervous system abnormalities showed ventriculomegaly, colpocephaly, and hypoplasia of the corpus callosum. At birth, axial hypotonia, uncoordinated movements, microcephaly, and generalized cerebellar atrophy were detected. Metabolic investigations revealed high lysine, lactate, and pipecolic acid levels in blood and cerebrospinal fluid. Pyruvate carboxylase and pyruvate dehydrogenase activity in fibroblasts were normal...
November 2016: Pediatrics
https://www.readbyqxmd.com/read/27912044/mutations-in-prosc-disrupt-cellular-pyridoxal-phosphate-homeostasis-and-cause-vitamin-b6-dependent-epilepsy
#17
Niklas Darin, Emma Reid, Laurence Prunetti, Lena Samuelsson, Ralf A Husain, Matthew Wilson, Basma El Yacoubi, Emma Footitt, W K Chong, Louise C Wilson, Helen Prunty, Simon Pope, Simon Heales, Karine Lascelles, Mike Champion, Evangeline Wassmer, Pierangelo Veggiotti, Valérie de Crécy-Lagard, Philippa B Mills, Peter T Clayton
Pyridoxal 5'-phosphate (PLP), the active form of vitamin B6, functions as a cofactor in humans for more than 140 enzymes, many of which are involved in neurotransmitter synthesis and degradation. A deficiency of PLP can present, therefore, as seizures and other symptoms that are treatable with PLP and/or pyridoxine. Deficiency of PLP in the brain can be caused by inborn errors affecting B6 vitamer metabolism or by inactivation of PLP, which can occur when compounds accumulate as a result of inborn errors of other pathways or when small molecules are ingested...
December 1, 2016: American Journal of Human Genetics
https://www.readbyqxmd.com/read/27890703/vitamin-b6-metabolism-in-microbes-and-approaches-for-fermentative-production
#18
REVIEW
Jonathan Rosenberg, Till Ischebeck, Fabian M Commichau
Vitamin B6 is a designation for the six vitamers pyridoxal, pyridoxine, pyridoxamine, pyridoxal 5'-phosphate (PLP), pyridoxine 5'-phosphate, and pyridoxamine. PLP, being the most important B6 vitamer, serves as a cofactor for many proteins and enzymes. In contrast to other organisms, animals and humans have to ingest vitamin B6 with their food. Several disorders are associated with vitamin B6 deficiency. Moreover, pharmaceuticals interfere with metabolism of the cofactor, which also results in vitamin B6 deficiency...
November 24, 2016: Biotechnology Advances
https://www.readbyqxmd.com/read/27882480/phenotype-biochemical-features-genotype-and-treatment-outcome-of-pyridoxine-dependent-epilepsy
#19
Amal Al Teneiji, Theodora U J Bruun, Dawn Cordeiro, Jaina Patel, Michal Inbar-Feigenberg, Shelly Weiss, Eduard Struys, Saadet Mercimek-Mahmutoglu
We report treatment outcome of eleven patients with pyridoxine-dependent epilepsy caused by pathogenic variants in ALDH7A1 (PDE-ALDH7A1). We developed a clinical severity score to compare phenotype with biochemical features, genotype and delays in the initiation of pyridoxine. Clinical severity score included 1) global developmental delay/ intellectual disability; 2) age of seizure onset prior to pyridoxine; 3) current seizures on treatment. Phenotype scored 1-3 = mild; 4-6 = moderate; and 7-9 = severe...
November 23, 2016: Metabolic Brain Disease
https://www.readbyqxmd.com/read/27881103/demonstration-of-early-efficacy-results-of-the-delayed-release-combination-of-doxylamine-pyridoxine-for-the-treatment-of-nausea-and-vomiting-of-pregnancy
#20
Gideon Koren, Shannon Clark, Gary D V Hankins, Steve N Caritis, Jason G Umans, Menachem Miodovnik, Donald R Mattison, Ilan Matok
BACKGROUND: Nausea and vomiting of pregnancy (NVP) affects up to 80% of expecting mothers. In April 2013 the FDA approved the delayed-release combination of doxylamine succinate and pyridoxine hydrochloride (Diclegis®) for NVP, based in part, on the results of a phase III randomized trial demonstrating the efficacy of this drug combination [study drug marketed under the trade name Diclectin® in Canada and Diclegis® in the United States] compared to placebo in pregnant women. Study drug dosing occurred for 14 days, which is substantially longer than what has been performed in similar studies...
November 24, 2016: BMC Pregnancy and Childbirth
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