Results 81 to 90 of about 805,988 (244)

A new branch of mammalian vitamin B6 metabolism: AKR1C‐mediated conversion of pyridoxal to pyridoxine and 4‐pyridoxolactone

The FEBS Journal, EarlyView.
Pyridoxal 5′‐phosphate (PLP) homeostasis relies on salvage enzymes, yet key metabolic branches remain undefined. We identify AKR1C isozymes as previously undescribed contributors that convert pyridoxal into pyridoxine or 4‐pyridoxolactone through reductase and dehydrogenase activities.
Nayu Kito, Yasuyuki Kitaura, Kyoka Iino, Kazuya Toriumi, Hyunah Noh, Naoya Ogawa, Makoto Arai, Hisashi Hemmi, Tomokazu Ito   +8 more
wiley   +1 more source

A distinct gene expression mechanism for d‐amino acid utilization in hyperthermophilic archaeon Pyrococcus horikoshii

The FEBS Journal, EarlyView.
The genes PH0137, PH0138, and PH0140 form a cluster in the genome of Pyrococcus horikoshii. The PH0140 gene encodes a transcription factor identified as a d‐amino acid‐responsive regulatory protein (DARP). In feast mode, l‐Ile‐bound DARP binds to the promoter and represses transcription of PH0137 and PH0138. In famine mode, DARP binds to d‐allo‐Ile and
Ryushi Kawakami, Tomoki Kawase, Taira Uehara, Haruhiko Sakuraba, Tomohiko Matsuzawa, Junji Hayashi, Toshihisa Ohshima   +6 more
wiley   +1 more source

Outcome of Teriparatide Treatment on Fracture Healing Complications and Symptomatic Bone Marrow Edema in Four Adult Patients With Hypophosphatasia

JBMR Plus, 2019
The response to teriparatide has been described in very few cases of hypophosphatasia (HPP). In this cross‐sectional study, we report the prevalence of symptomatic bone marrow edema (BME) and fracture healing complications in a large cohort of childhood ...
Tobias Schmidt, Tim Rolvien, Carolin Linke, Nico Maximilian Jandl, Ralf Oheim, Michael Amling, Florian Barvencik   +6 more
doaj   +1 more source

Phenotypic characterization of Arabidopsis thaliana mutants that alleviate root growth defects in a vitamin B6 biosynthesis mutant

The FEBS Journal, EarlyView.
Vitamin B6 is a critical molecule for plant metabolism and development. Rsr4‐1, a loss‐of‐function mutant in a vitamin B6 biosynthesis gene, has a distinct short root phenotype. Here we describe five novel suppressor mutants with an rsr4‐1 background that have normalized root growth and distinct phenotypic and molecular characteristics, representing a ...
Marcelina Parra, Paige Henning, Clayton Bailes, Sanja Roje, Hanjo Hellmann   +4 more
wiley   +1 more source

A loss of Pdxk model of Parkinson disease in Drosophila can be suppressed by Buffy

BMC Research Notes, 2017
Background The identification of a DNA variant in pyridoxal kinase (Pdxk) associated with increased risk to Parkinson disease (PD) gene led us to study the inhibition of this gene in the Dopa decarboxylase (Ddc)-expressing neurons of the well-studied ...
P. Githure M’Angale, Brian E. Staveley
doaj   +1 more source

Vitamin B6: too much, too little, too late? An analysis of sales trends in Australia from 2023 to 2025

Internal Medicine Journal, EarlyView.
Abstract Background Peripheral neuropathy associated with vitamin B6 (pyridoxine) is dose and duration dependent. High‐dose vitamin B6 products associated with adverse neurological effects are available in Australia, prompting recent regulatory action to reschedule products containing ≥50 mg pyridoxine to schedule 3 (pharmacist only).
Wai‐Jo Jocelin Chan, Jennifer Hunter, Vivian Yeukman Lee, Rose Cairns, Slade Mathews, Joanna E. Harnett   +5 more
wiley   +1 more source

Parkinson’s Disease: Carbidopa, Nausea, and Dyskinesia [Retraction]

Clinical Pharmacology: Advances and Applications, 2021
Hinz M, Stein A, Cole T. Clin Pharmacol. 2014;6:189–194.The Editor-in-chief and Publisher of Clinical Pharmacology: Advances and Applications wish to retract the published article.This perspective article cites several original ...
Hinz M, Stein A, Cole T
doaj  

Natural variation in the promoter of OsPDX1.2 enhances vitamin B6 accumulation and cold tolerance in rice

Journal of Integrative Plant Biology, EarlyView.
Allelic variation in the promoter of the pyridoxal phosphate synthase OsPDX1.2 caused variation in the ACE‐box cis‐elements, resulting in differing OsPDX1.2 expression due to differences in binding affinity between the OsbZIP18 transcriptipn factor and the ACE‐box, contributing to variation in vitamin B6 levels and cold tolerance among rice varieties ...
Bi Wang, Qiu Yi Wang, Wen Jie Shi, Rong Hui Li, Xu Dong Zhang, Li Ping Wang, Shi Jia Xia, Kai Xi Chen, Jun Jie Zhou, Yang Yang Sun, Jing He, Alisdair R. Fernie, Ying Chun Han, Jun Zhou Li, Yu Heng Shi, Xian Qing Liu, Yuan Yuan Zhang, Jie Luo, Cheng Jin   +18 more
wiley   +1 more source

Late-onset drug-resistant epilepsy in pyridoxamine 5′-phosphate oxidase deficiency: a case report

Journal of Medical Case Reports
Background Pyridoxamine 5′-phosphate oxidase deficiency is a rare inborn error of vitamin B6 metabolism that presents with drug-resistant epileptic seizures.
Erfan Naghavi, Afshan Davari, Amir Reza Bahadori, Mohammad Razmafrooz, Hamed AmiriFard, Iman Sabzgolin, Abbas Tafakhori, Mehrdad Sheikhvatan, Sara Ranji   +8 more
doaj   +1 more source

Do We Need to Monitor B‐Vitamins and Homocysteine During Initiation of Foslevodopa/Foscarbidopa Therapy?

Movement Disorders, EarlyView.
Aida Shaghaghi‐Zadeh, Matthias Höllerhage, Florian Wegner, Lan Ye, Ishana Schneidereit, Tobias Hegelmaier, Rebecca Jacob, Christoph Schrader, Martin Klietz   +8 more
wiley   +1 more source