Application of acetylcholinesterase (AChE) inhibitors is the primary treatment for Alzheimer's disease. Alkaloids, such as physostigmine, galanthamine, and huperzine A, play an important role as AChE inhibitors. The aim of this work was to evaluate Himatanthus lancifolius (Muell. Arg.) Woodson, a Brazilian species of Apocynaceae, and its main indole alkaloid uleine, in order to identify new ACh...

Background: The current study was conducted to compare ELISA with thin layer chromatography (TLC) methods for diagnosis of morphine in the urine. Methods: Positive urine samples for morphine confirmed by immunochromatographic strips were collected from the Imam Reza Toxicology Laboratory, Mashhad University of Medical Sciences, Mashhad, Iran in 2012 for the current study. Then, the collated ...

The immuno-pharmacological properties of ethanolic extract of Nyctanthes arbor-tristis Linn. (NA) have been investigated. After administration of Nyctanthes arbor-tristis in doses of 0.25 and 0.5 g/kg body weight (BW) a significant increase in phagocytic index, leukocyte count and spleenic antibody secreting cells were noticed. Stimulation of humoral immune response was further observed with he...

See also: II/Chromatography: Paper Chromatography. Chromatography: Gas: Detectors: Selective; Gas Chromatography}Mass Spectrometry. Chromatography: Liquid: Detectors: Mass Spectrometry. Chromatography: Thin-Layer (Planar): Densitometry and Image Analysis; Layers; Mass Spectrometry; Modes of Development: Conventional; Modes of Developement: Forced Flow, Over Pressured Layer Chromatography and Ce...

BACKGROUND We developed a simple and inexpensive thin-layer chromatography (TLC) assay for semiquantitative detection of saliva concentrations of nevirapine in resource-limited settings. The method was validated in an African target population. METHODS Paired plasma and saliva nevirapine concentrations were assayed by high-performance liquid chromatography (HPLC); saliva concentrations of nev...

Urinary amino acids were determined in 162 individuals (62 young non-vegetarians, 24 elderly non-vegetarians, 40 young vegetarians and 36 elderly vegetarians) by thin layer chromatography (TLC) and high performance liquid chromatography (HPLC). The two methods used in this study were compared. The difference in the percentage frequencies of detection by TLC and HPLC in non-vegetarian group was ...

simple, cheap and green protocol for effective conversion of alcohols to corresponding carbonyl compounds in the presence of h14[nap5w30o110] and ammonium nitrate is reported. the products were characterized by ft-ir and comparison of their physical properties with those reported in the literatures. the progress of the reaction was monitored by thin layer chromatography (tlc) technique. the ali...

Background: The phytoconstituents of herbal drugs are largely influenced by the quality control system used during and post-production processes including handling such products. Thin Layer Chromatography is one parameters that demonstrate uniqueness uniformity between various substances, serving as an identity for substances. Pax Herbal Health tea (PHT) Diatea (PDT) polyherbal drugs, PHT a to...

In this research the lipid fraction of two strains of Streptococcus thermophilus was studied. Lipids were extracted by applying Folch method and fractioned by thin layer chromatography (TLC). Fatty acid composition was determined both before TLC, on the total fat extracted, and after TLC on diacylglycerol and apolar fractions. Gas chromatographic analysis was performed by using both flame ioniz...

The applicability of Raman spectroscopy and surface-enhanced Raman scattering (SERS) to the analysis of synthetic dyes commonly found in ballpoint inks was investigated in a comparative study. Spectra of 10 dyes were obtained using a dispersive system (633 nm, 785 nm lasers) and a Fourier transform system (1064 nm laser) under different analytical conditions (e.g., powdered pigments, solutions,...