Results 151 to 160 of about 6,349,043 (393)

Chemical composition and anti-irritant capacity of whole body extracts of Ulomoides dermestoides (coleoptera, tenebrionidae)

open access: yesVitae, 2013
Background: In traditional medicine of Central and South America, the tenebrionid beetle Ulomoides dermestoides is used as an a phrodisiac, for the treatment of inflammatory diseases and cancer. Recently was reported cytotoxic and genotoxic properties of
Dary Luz MENDOZA MEZA   +1 more
doaj  

Application of 4,5-diaminofluorescein to reliably measure nitric oxide released from endothelial cells in vitro

open access: yesBiological Procedures Online, 2003
Here we describe in more depth the previously published application of the fluorescent probe 4,5-diaminofluorescein (DAF-2) in order to reliably measure low levels of nitric oxide (NO) as released from human endothelial cells in vitro.
Räthel Thomas R.   +3 more
doaj   +1 more source

The thioredoxin‐like and one glutaredoxin domain are required to rescue the iron‐starvation phenotype of HeLa GLRX3 knock out cells

open access: yesFEBS Letters, EarlyView.
Glutaredoxin (Grx) 3 proteins contain a thioredoxin domain and one to three class II Grx domains. These proteins play a crucial role in iron homeostasis in eukaryotic cells. In human Grx3, at least one of the two Grx domains, together with the thioredoxin domain, is essential for its function in iron metabolism.
Laura Magdalena Jordt   +4 more
wiley   +1 more source

Designing Paper-Based Immunoassays for Biomedical Applications

open access: yesSensors, 2019
Paper-based sensors and assays have been highly attractive for numerous biological applications, including rapid diagnostics and assays for disease detection, food safety, and clinical care.
Delyan R. Hristov   +3 more
doaj   +1 more source

Biological Assay-Guided Fractionation and Mass Spectrometry-Based Metabolite Profiling of Annona muricata L. Cytotoxic Compounds against Lung Cancer A549 Cell Line. [PDF]

open access: yesPlants (Basel), 2022
Salac ELO   +15 more
europepmc   +1 more source

Assay of Thiamine in Biologic Fluids

open access: yesClinical Chemistry, 1959
Abstract A method based on the protozoan Ochromonas malhamensis has been developed for assaying thiamine in biologic fluids. It is sensitive, specific and reproducible. Results by this method agree well with other less convenient methods of thiamine assay.
Herman Baker   +5 more
openaire   +3 more sources

In vivo evidence for glycyl radical insertion into a catalytically inactive variant of pyruvate formate‐lyase

open access: yesFEBS Letters, EarlyView.
Dimeric pyruvate formate‐lyase cleaves pyruvate using a radical‐based mechanism. G734 serves as a radical storage location, and the radical is transferred to the catalytic C419 residue. Mutation of the C418‐C419 pair causes loss of enzyme activity, but does not impede radical introduction onto G734. Therefore, cis‐ but not trans‐radical transfer occurs
Michelle Kammel   +2 more
wiley   +1 more source

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