Vitellaria paraodoxa (shea tree) is the source of shea seed from which well-known butter derived. The methanol extract was evaluated for its anti-inflammatory and antioxidant activities using diclofenac sodium ascorbic acid as standard respectively in vitro methods. activity determined by inhibition protein denaturation bovine serum albumin (BSA) erythrocyte membrane stabilization human red blo...

In the present study, we conducted a retrospective analysis of 343 in vitro experiments to ascertain whether observed (experimentally determined) values of Ki for reversible cytochrome P450 (P450) inhibition could be reliably predicted by dividing the corresponding IC50 values by two, based on the relationship (for competitive inhibition) in which Ki = IC50/2 when [S] (substrate concentration) ...

Non-enzymatic glycation and the accumulation of advanced glycation end products (AGEs) are associated with various diseases states, including complications of diabetes and aging. Hydroalcoholic extracts of several kinds of spices (16) and chilies (21) of culinary used in traditional Mexican cuisine were tested for in vitro inhibition of non-enzymatic glycation of bovine serum albumin. Of these,...

This study aims to investigate the cytotoxicity of Andrographis paniculata, Ziziphus spina-christi and Gymnanthemum extensum crude extracts their combination with low piperine fractional Piper nigrum extract. All plants were extracted water five organic solvents (methanol, ethanol, dichloromethane, ethyl acetate hexane). Cytotoxicity was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tet...

A new web-server tool estimates K(i) values from experimentally determined IC(50) values for inhibitors of enzymes and of binding reactions between macromolecules (e.g. proteins, polynucleic acids) and ligands. This converter was developed to enable end users to help gauge the quality of the underlying assumptions used in these calculations which depend on the type of mechanism of inhibitor act...

Exploring the oceans for bioactive compounds is an incessant human desire. The present study investigates selected bioactivities; anti-inflammatory, anti-oxidant, cytotoxic, and genotoxic potential of Axinella sp. marine sponge crude extract (SCE). Sponge identification was based on morphology skeletal analysis. SCE prepared by methanol/dichloromethane extraction tested zoo-chemicals, anti-infl...

Zinc (Zn), aluminium (Al), mercury (Hg), methylmercury (MeHg) and lead (Pb) extracellulary applied reduce voltage-activated calcium channel currents (VACCCs); Pb and Al also reduce N-methyl-D-aspartate (NMDA)-activated channel currents (NACCs). Pb is most effective in reducing VACCCs, with an IC50 of 0.46 microM, followed by Hg (IC50 = 1.1 microM) and MeHg (IC50 = 2.6 microM). Zn and Al were le...

Chromatographic separation of the leaves of Teclea trichocarpa (Engl.) Engl. (Rutaceae) used traditionally by Akamba tribe in Kenya yielded three acridone alkaloids, a furoquinoline alkaloid and two triterpenoids. The total extract (methanol) of the leaves of this plant and the isolated compounds were screened for in vitro for cytotoxicity and against parasitic protozoa, Plasmodium falciparum, ...

Helicobacter pylori (H. pylori) infection leads to different clinical and pathological outcomes in humans, including chronic gastritis, peptic ulcer disease and gastric neoplasia and even gastric cancer and its eradiation dependst upon multi-drug therapy. The most effective therapy is still unknown and prompts people to make great efforts to find better and more modern natural or synthetic anti...