Results 101 to 110 of about 436,973 (328)

Mechanism of 3-Methylanthranilic Acid Derepression of the Tryptophan Operon in \u3cem\u3eEscherichia coli\u3c/em\u3e [PDF]

open access: yes, 1970
3-Methylanthranilic acid (3MA) inhibits growth and causes derepression of the tryptophan biosynthetic enzymes in wild-type strains of Escherichia coli. Previous reports attributed this effect to an inhibition of the conversion of 1-(o-carboxyphenylamino)-
Held, William A., Smith, Oliver H.
core   +1 more source

Properties of the mechanosensitive channel MscS pore revealed by tryptophan scanning mutagenesis [PDF]

open access: yes, 2015
Funding This work was supported by a Wellcome Trust Programme grant [092552/A/10/Z awarded to I.R.B., S.M., J. H. Naismith (University of St Andrews, St Andrews, U.K.), and S. J. Conway (University of Oxford, Oxford, U.K.)] (T.R.
Akiko Rasmussen   +12 more
core   +4 more sources

Cyclic Peptide–Polymer Conjugate Nanotubes for Delivery of SN‐38 in Treatment of Colorectal Cancer Model

open access: yesAdvanced Healthcare Materials, EarlyView.
This study develops cyclic peptidepolymer conjugate nanotubes with hydrophobic, drug‐rich cores to enhance drug loading and stability, and demonstrates their responsive disassembly, pharmacokinetics, and anti‐tumour efficacy in colorectal cancer models using the anticancer drug SN‐38.
Sophie K. Hill   +4 more
wiley   +1 more source

Feed interventions and skatole deposition [PDF]

open access: yes, 2012
Skatole produced in the large intestine of the pig and the testicular steroid androstenone are the main substances contributing to boar tainted meat from entire male pigs.
Jensen, Rikke Lassen
core  

Pathway of human AS3MT arsenic methylation [PDF]

open access: yes, 2014
A synthetic gene encoding human As(III) S-adenosylmethionine (SAM) methyltransferase (hAS3MT) was expressed, and the purified enzyme was characterized.
Dheeman, Dharmendra S.   +3 more
core   +2 more sources

Body Biofluids for Minimally‐Invasive Diagnostics: Insights, Challenges, Emerging Technologies, and Clinical Potential

open access: yesAdvanced Healthcare Materials, EarlyView.
Recent advances in diagnostics have accelerated the development of miniaturized wearable technologies for the continuous monitoring of diseases. This paradigm is shifting healthcare away from invasive, centralized blood tests toward decentralized monitoring, using alternative body biofluids.
Lanka Tata Rao   +2 more
wiley   +1 more source

Therapeutic efficacy of an elemental diet for patients with crohn's disease and its association with amino acid metabolism

open access: yesThe Saudi Journal of Gastroenterology, 2017
Background/Aim: We investigated the association between blood amino acid concentration changes caused by elemental diet (ED) and their relationship to its therapeutic effect. Patients and Methods: Patients with active Crohn's disease (CD) followed ED for
Masakazu Nakano   +5 more
doaj   +1 more source

Harnessing Next‐Generation 3D Cancer Models to Elucidate Tumor‐Microbiome Crosstalk

open access: yesAdvanced Healthcare Materials, EarlyView.
Centralizes the microbiome within 3D tumor‐microbiome model platforms, including spheroids, organoids, 3D‐bioprinted constructs, and microfluidic chips, each enabling structured host‐tumor‐microbe studies. These systems support bacterial colonization, facilitating investigation of microbial impacts on tumor growth, immunity, and therapy. The microbiome
Marina Green Buzhor   +12 more
wiley   +1 more source

Tryptophan Metabolites as Scavengers of Reactive Oxygen and Chlorine Species

open access: yesPteridines, 2002
Upon stimulation with interferon-γ, a typical Thl cell-derived cytokine, human monocyte-dertved macrophages produce neopterin derivatives and in parallel degrade the essential amino acid L-tryptophan to L-kynurenine and subsequently to 3 ...
Weiss Günter   +4 more
doaj   +1 more source

Glyphosate’s Suppression of Cytochrome P450 Enzymes and Amino Acid Biosynthesis by the Gut Microbiome: Pathways to Modern Diseases

open access: yesEntropy, 2013
Glyphosate, the active ingredient in Roundup®, is the most popular herbicide used worldwide. The industry asserts it is minimally toxic to humans, but here we argue otherwise.
Anthony Samsel, Stephanie Seneff
doaj   +1 more source

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