Potential plasmodial targets are reported here. Methods: To study the mechanism of action of cepharanthine, a combined approach using phenotypic and transcriptomic techniques was undertaken. Results: Cepharanthine blocked
P. falciparum development in ring stage. On a culture of synchronized ring stage, the comparisons of expression profiles showed that the samples treated with 5 mu M of cepharanthine (IC90) were significantly closer to the initial controls than to the final ones. After a two-way ANOVA (p-value smaller than 0.05) on the microarray results, ARO 002 1,141 probes among 9,722 presented a significant differential expression. A gene ontology analysis showed that the Maurer’s clefts seem particularly down-regulated by cepharanthine. The analysis of metabolic pathways
showed an impact on cell-cell interactions (cytoadherence and rosetting), GSI-IX Proteases inhibitor glycolysis and isoprenoid pathways. Organellar functions, more particularly constituted by apicoplast and mitochondrion, are targeted too. Conclusion: The blockage at the ring stage by cepharanthine is described for the first time. Transcriptomic approach confirmed that cepharanthine might have a potential innovative antiplasmodial mechanism of action. Thus, cepharanthine might play an ongoing role in the progress on anti-malarial drug discovery efforts.”
“AimsActivation of vascular GPER has been linked to vasodepressor effects in animals. However, the significance of GPER regulation on chronic blood pressure control in humans buy GM6001 is unknown. MethodsTo examine this question we determined the functional significance of expression of a common missense single nucleotide variant of GPER, P16L in vascular smooth muscle cells, and its association
with blood pressure in humans. Further, to validate the importance of carrying GPER P16L in the development of hypertension we assessed allele frequency in a cohort of hard-to-treat hypertensive patients referred to a tertiary care clinic. ResultsExpression of the GPER P16L variant (V) vs. wild type (WT) in rat aortic vascular smooth muscle cells, was associated with a significant decrease in G1 (1m, a GPER agonist)-mediated ERK phosphorylation (slope of the function of G1-stimulated ERK phosphorylation: GPER content WT: 16.2, 95% CI 9.9, 22.6; V: 5.0, 95% CI 1.0, 9.0; P smaller than 0.005) and apoptosis (slope of the function of G1-stimulated apoptosis: GPER content: WT: 4.4, 95% CI: 3.4, 5.4; V: 2.5, 95% CI 1.6, 2.3 P smaller than 0.005). Normotensive female subjects, but not male subjects, carrying this hypofunctional variant (allele frequency 22%) have increased blood pressure [mean arterial pressure: P16/P16: 80 1mmHg (n = 204) vs.P16L carriers: 82 +/- 1mmHg (n = 127), 95% CI for difference: 0.6, 4.0mmHg, P smaller than 0.05], [systolic blood pressure: P16/P16: 105 +/- 1mmHg vs. P16L carriers: 108 +/- 1mmHg, 95% CI for difference:1.0, 5.1mmHg, P smaller than 0.05], [diastolic blood pressure: P16/P16: 66 +/- 0.5mmHg vs.