Results 61 to 70 of about 124,089 (289)

Analysis of metabolic profiles of bile acids in urine using a lipophilic anion exchanger and computerized gas-liquid chromatorgaphy-mass spectrometry

Journal of Lipid Research, 1977
A method is described for quantitative analysis of bile acids in urine. Urine is acidified and bile acids are extracted on an Amberlite XAD-2 column.
B Almé, A Bremmelgaard, J Sjövall, P Thomassen   +3 more
doaj   +1 more source

Gel filtration chromatography [PDF]

, 2011
Gel-filtration chromatography is a popular and versatile technique that permits the effective separation of proteins and other biological molecules in high yield. Here, the basis of the method is described and typical matrix types are contrasted.
Cummins, Phil, O'Connor, Brendan, Ó Fágáin, Ciarán   +2 more
core  

Tandem Mass Spectrometry and Bio‐Guided Isolation of Secondary Metabolites With Antiplasmodial Activity From Dalbergia miscolobium Bark

Chemistry &Biodiversity, EarlyView.
ABSTRACT Strategies have been employed to address antimalarial drug resistance, including the exploration of new therapeutic targets. In this study, the stem bark of Dalbergia miscolobium was investigated using in vitro assays against Plasmodium falciparum and pyruvate kinase II (PyrKII), an essential enzyme for parasite development.
Thais Bertolino Vieira Dantas, Igor M. R. Moura, Romário Pereira da Costa, Guilherme Eduardo de Souza, Richele Priscila Severino, Hélder Nagai Consolaro, Luis Felipe de Oliveira, Vinicius Bonatto, Quezia Bezerra Cass, Rafael V. C. Guido, Lorena Ramos Freitas de Sousa   +10 more
wiley   +1 more source

Salix daphnoides: A Screening for Oligomeric and Polymeric Proanthocyanidins

Molecules, 2015
In the present study, a qualitative analysis of proanthocyanidins (PAs) from an aqueous-methanolic extract of Salix daphnoides VILL. bark is described. Procyanidin B1 (1), B2 (2), B3 (3), B4 (4), C1 (5), epicatechin-(4β→8)-epicatechin-(4β→8)-catechin (6)
Stefan Wiesneth, Frank Petereit, Guido Jürgenliemk   +2 more
doaj   +1 more source

Mechanism of the Enzymic Reduction of N_2: The Binding of Adenosine 5'-Triphosphate and Cyanide to the N_2-reducing System [PDF]

, 1968
The in vitro reduction of N_2 is a complex process involving at least six different reactants: two proteins [1,2] for which the names azoferredoxin (AzoFd) and molybdoferredoxin (MoFd) have been proposed[3], an electron source, the electron acceptor, ATP[
Bui, P. T., Mortenson, L. E.
core  

Exploring the Antiproliferative Activity of Flavolignans From the Leaves of Casearia arborea (Salicaceae)

Chemistry &Biodiversity, EarlyView.
ABSTRACT The Casearia genus (Salicaceae) is well known as a source of natural antitumor prototypes, as described for clerodane diterpenes. In this way, the dichloromethane phase from leaves of Casearia arborea was phytochemically evaluated in liquid chromatography coupled to high‐resolution mass spectrometry, furnishing flavonoid, flavolignan, and ...
Augusto L. Santos, Mariana T. Rodrigues, Ana Paula Michelli, Rodrigo E. Tamura, Ileana G. S. de Rubió, Marisi G. Soares, Marcelo J. P. Ferreira, Patricia Sartorelli   +7 more
wiley   +1 more source

High performance thin-layer chromatography and densitometry of synaptic plasma membrane lipids.

Journal of Lipid Research, 1989
Previously, it has been shown that phospholipids, cholesterol, and glycolipids could be quantitated using the same high performance thin-layer chromatography (HPTLC) method.
W G Wood, M Cornwell, L S Williamson
doaj   +1 more source

Bioprospecting of Labdane‐Type Diterpenes From Austroeupatorium laetevirens: Molecular Networking, Structural Elucidation, and Biological Activity Evaluation

Chemistry &Biodiversity, EarlyView.
ABSTRACT Labdane‐type diterpenes are the main specialized metabolites in the Austroeupatorium genus, known for diverse biological activities. This study employed molecular networking to facilitate the identification of labdanes in Austroeupatorium laetevirens, alongside isolation, structural elucidation, and evaluation of anti‐Mycobacterium ...
Francielli A. P. Valeze, Maria Eduarda V. de Souza, Beatriz P. Moreno, Bianca D. B. Sahm, Andressa L. Ieque, Cleverton S. Fernandes, Regiane B. L. Scodro, Leticia V. Costa‐Lotufo, Marta R. B. do Carmo, Andrea N. L. Batista, João M. Batista Junior, Ernani A. Basso, Maria H. Sarragiotto, Debora C. Baldoqui   +13 more
wiley   +1 more source

Protein kinase-mediated phosphorylation of a purified sterol ester hydrolase from bovine adrenal cortex.

Journal of Lipid Research, 1978
Sterol ester hydrolase (cholesterol esterase, E.C. 3.1.1.13) of bovine adrenal cortex has been extensively purified by ammonium sulfate fractionation, acid precipitation, hydroxylapatite chromatography, and Sephadex G-200 chromatography.
S Naghshineh, C R Treadwell, L L Gallo, G V Vahouny   +3 more
doaj   +1 more source

A proanthocyanidin from cinnamomum zeylanicum stimulates phosphorylation of insulin receptor in 3t3-l1 adipocytes [PDF]

, 2006
Non-insulin-dependent diabetes mellitus is due to in large part to insulin resistance, a state where the target cells are no longer responding to ordinary levels of circulating insulin.
Abdul Majid, Fadzilah Adibah, Sarmidi, Mohamad Roji, Taher, Muhammad   +2 more
core   +1 more source