Results 81 to 90 of about 40,082 (212)

A Comparative Study of Methods for Determining the Concentration of Radon-222 in Spring Waters in Poços de Caldas Plateau, Brazil

open access: yesRevista Águas Subterrâneas, 2018
This study is a comparison of methodologies to determine the concentration of radon (222Rn) found in natural water sources used by the population of the cities of Poços de Caldas and Águas da Prata in the Poços de Caldas Plateau, in southeastern Brazil ...
Flavio Henrique de Souza Moreira   +4 more
doaj   +1 more source

Distinct Foliar Uptake Pathways for Phosphorus and Nano‐Hydroxyapatite in Potato Revealed By Synchrotron μCT and ³³P Imaging

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT Potato (Solanum tuberosum L.) has a high phosphorus (P) requirement, yet its shallow root system and the strong P‐fixing capacity of many soils limit the effectiveness of soil fertilisation. Foliar application of nano‐hydroxyapatite particles (nHAPs) has emerged as a promising alternative P fertilisation practice.
Max Frank   +6 more
wiley   +1 more source

MCT1‐mediated bidirectional propionate transport across human placental syncytiotrophoblast layer: insights from a trophoblast stem cell‐derived barrier model

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Propionate in the fetal circulation is thought to originate from fermentation of dietary fibre by the maternal gut microbiota. However, the mechanism of transplacental transport has remained unclear. Here, we measured propionate permeability using a placental barrier model generated by differentiating human placental trophoblast ...
Toshiaki Tsuchitani   +8 more
wiley   +1 more source

Transfer of paracetamol across the placenta and fetal blood–brain barriers and its safety for use in pregnancy

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Paracetamol (acetaminophen) is commonly taken during pregnancy for pain and fever. To gain a more comprehensive understanding of paracetamol's effects during pregnancy, several elements need to be examined including the transfer of paracetamol across the placenta and into the developing brain, the short‐ and long‐term effects of ...
Yifan Huang, Liam Koehn
wiley   +1 more source

Advances in Human Mass Balance Studies: An IQ Consortium Perspective on Current Practices and Emerging Trends

open access: yesClinical Pharmacology &Therapeutics, Volume 120, Issue 1, Page 43-54, July 2026.
Human radiolabeled mass balance studies are crucial for comprehensively characterizing the absorption, distribution, metabolism, and excretion (ADME) of investigational drugs, providing essential data for drug development, regulatory evaluation, and product labeling.
Jason Boer   +24 more
wiley   +1 more source

Methionine Synthase Interacts With the Methionine Adenosyl‐Transferase MATα2 and the DNA Methyltransferase DNMT3b in the Nucleus

open access: yesJournal of Inherited Metabolic Disease, Volume 49, Issue 4, July 2026.
This study shows that methionine synthase (MS) interacts with MATα2, responsible for SAM production, and the methyltransferase DNMT3b in the nucleus. These results support the idea that spatial compartmentalization of one‐carbon metabolism could play a major role in regulating the epigenome.
Manon Jeandel   +8 more
wiley   +1 more source

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