[No authors listed]
Present inventory evaluates the anti-atherogenic potential of C. glandulosum.Coleb leaf extract (CG) using in vivo and in vitro experimental models. Serum markers of low density lipoprotein (LDL-C) oxidation, cholesterol, triglycerides, lipoproteins, auto-antibody titer, ex vivo LDL-C oxidation, LDL-C aggregation, aortic lipids, histopathological evaluations and immunolocalization of macrophage surface marker (F4/80), vascular cell adhesion molecule-1 (VCAM-1) and P-selectin were performed in CON [rats treated with single dose of saline (i.p.) and fed with laboratory chow], ATH [rats treated with single dose of vitamin D3 (600,000 IU, i.p) and fed with atherogenic diet] and ATH+CG [rats treated with single dose of vitamin D3 (600,000 IU, i.p.) and fed with atherogenic diet and simultaneously treated with 200âmg/kg CG extract, p.o.] for 8 weeks. CG extract supplementation to atherogenic diet fed rats significantly prevented increment in serum cholesterol, triglycerides, and lipoproteins, markers of LDL-C oxidation, auto-antibody titer and aortic lipids. Also, LDL-C isolated from ATH+CG rats recorded mimimal aggregation and susceptibility to undergo ex vivo LDL-C oxidation. Microscopic evaluation of thoracic aorta of ATH+CG rats reveled prevention of atheromatous plaque formation, accumulation of lipid laden macrophages, calcium deposition, distortion/defragmentation of elastin, accumulation of macrophages and, down regulation of cell adhesion molecules (VCAM-1 and P-selectin) expression. Further, in vitro monocyte to macrophage differentiation was significantly attenuated in presence of CG extract (200 µg/mL). It can be concluded from the present study that, CG extract is capable of controlling induction of experimental atherosclerosis and warrants further scrutiny at the clinical level as a possible therapeutic agent.
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