Results 41 to 50 of about 346,502 (202)

B-6 vitamers and 4-pyridoxic acid in the plasma, erythrocytes, and urine of postmenopausal women [PDF]

The American Journal of Clinical Nutrition, 2004
Although many studies have reported reduced vitamin B-6 status with aging, little information is available about the specific effects of menopause.We aimed to examine vitamin B-6 metabolism in premenopausal and early postmenopausal women.We examined dietary intake and vitamin B-6 metabolites in the plasma, erythrocytes, and urine of 30 premenopausal ...
Priscille G, Massé, J Dennis, Mahuren, Carole, Tranchant, Juliana, Dosy   +3 more
openaire   +2 more sources

Multiomics Reveals the Microbiota and Metabolites Associated with Sperm Quality in Rongchang Boars

Microorganisms
In this study, we investigated the correlation between the composition and function of the gut microbiota and the semen quality of Rongchang boars. Significant differences in gut microbial composition between boars with high (group H) and low (group L ...
Chao A, Bin Zhang, Jie Chai, Zhi Tu, Zhiqiang Yan, Xiaoqian Wu, Minghong Wei, Chuanyi Wu, Tinghuan Zhang, Pingxian Wu, Mingzhou Li, Li Chen   +11 more
doaj   +1 more source

Metabonomic Profiling Analyses Reveal ANS Upregulation to Enhance the Flavonoid Pathway of Purple-Fleshed Sweet Potato Storage Root in Response to Deep Shading

Agronomy, 2021
Intercropping, as a common worldwide cultivation pattern, provides opportunities for sustainable agriculture with fuller use of light, temperature and land resources and greater yield per unit of land.
Ying He, Dan Zhu, Yujun Sun, Qian Wang, Lan Zhu, Hanlai Zeng   +5 more
doaj   +1 more source

Isolation and characterization of a novel multibridged tetradentate dianionic form of pyridoxic acid. Crystal structure of tetranuclear [Cu4(PAA)2(Bipyam)4(H2O)2Cl2](NO3)2·CH3OH·10H2O

, 1991
The X-ray analysis of the tetranuclear copper(II) complex formed from pyridoxic acid and 2,2′-dipyridylamine reveals a novel metal binding mode of pyridoxic acid as a multibridged tetradentate dianion.
Manohar, Hattikudur, Mathews , Irimpan I
core   +1 more source

Comparison of mass spectra (negative ionization) of A) biggest fluorescent peak (no 2, Fig 2) and B) 4-pyridoxic acid reference.

, 2016
Comparison of mass spectra (negative ionization) of A) biggest fluorescent peak (no 2, Fig 2) and B) 4-pyridoxic acid reference.
Sigrid Kalle (3105807), Jürgen Arund (3105816), Ivo Fridolin (3105819), Risto Tanner (473516), Ruth Tomson (3105810), Merike Luman (3105813)   +5 more
core   +1 more source

Characterising Alzheimer's disease through integrative NMR- and LC-MS-based metabolomics

Metabolism Open, 2021
Background: Alzheimer's Disease (AD) is a complex and multifactorial disease and novel approaches are needed to illuminate the underlying pathology. Metabolites comprise the end-product of genes, transcripts, and protein regulations and might reflect ...
Jonas Ellegaard Nielsen, Raluca Georgiana Maltesen, Jesper F. Havelund, Nils J. Færgeman, Charlotte Held Gotfredsen, Karsten Vestergård, Søren Risom Kristensen, Shona Pedersen   +7 more
doaj   +1 more source

Effect of Late Second to Early Third Trimester of Pregnancy on the Activity of Renal Organic Anion Transporters (OAT1 and OAT3): A Biomarker Study

Clinical Pharmacology &Therapeutics, EarlyView.
Pregnant individuals take drugs throughout pregnancy and many of these drugs (e.g., antivirals, antibiotics) are eliminated by renal organic anion transporters (OAT) 1 and OAT3. In vivo studies with OAT1/3 substrate drugs suggest that pregnancy increases renal OAT1/3 activities by 1.5‐ to 1.8‐fold.
Aarzoo Thakur, Jashvant D. Unadkat, Emily E. Fay, Nina Isoherranen, Mary F. Hebert   +4 more
wiley   +1 more source

Dependence of the correlation between fluorescence intensity of spent dialysate and 4-pyridoxic acid concentration on the excitation-emission wavelength conditions.

, 2016
Dependence of the correlation between fluorescence intensity of spent dialysate and 4-pyridoxic acid concentration on the excitation-emission wavelength conditions.
Sigrid Kalle (3105807), Jürgen Arund (3105816), Ivo Fridolin (3105819), Risto Tanner (473516), Ruth Tomson (3105810), Merike Luman (3105813)   +5 more
core   +1 more source

Effects of In Vitro Fermentation of Polysialic Acid and Sialic Acid on Gut Microbial Community Composition and Metabolites in Healthy Humans

Foods
The influence of polysialic acid (PSA) and sialic acid (SA) on the gut microbial community composition and metabolites in healthy humans was investigated using a bionic gastrointestinal reactor. The results indicated that PSA and SA significantly changed
Zhongwei Yin, Li Zhu, Minjie Gao, Dan Yu, Zijian Zhang, Ling Zhu, Xiaobei Zhan   +6 more
doaj   +1 more source

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