Given the task definition and input, reply with output. Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.

Calcific aortic stenosis may be an inflammatory disease with active bone formation in the valve leaflets rather than a disease of passive calcium deposition. Epidemiologic data demonstrating correlation of poor dental hygiene to atherosclerotic pathologies suggests that circulating bacterial products could be involved in the pathogenesis of aortic valve stenosis. We hypothesized that lipopolysaccharide (LPS) stimulation of human aortic valve interstitial cells (HAVICs) would induce inflammatory and osteogenic gene expression.', 'The HAVICs were isolated from normal aortic valves obtained from explanted hearts during transplantation (n = 5) and grown in culture. Cells underwent 4 and 24 hours of LPS stimulation (LPS, 200 ng/mL) or beta-glycerol phosphate treatment (BGP) (osteogenic media as positive control). Media was removed for interleukin (IL)-6 and IL-8 immunoassay. Ribonucleic acid was extracted for microarray analysis. Statistics were by analysis of variance with post-hoc analysis (p < 0.05).', 'The LPS stimulation induced the gene expression of proinflammatory cytokines, chemokines, and adhesion molecules. Protein level confirmation by immunoassay demonstrated 3.4-fold (+/- 0.35, p < 0.01) and 9.5-fold (+/- 1.5 p < 0.01) increase over control of IL-6 and IL-8, respectively. The LPS and BGP both induced critical mediators of osteogenesis including bone morphogenetic protein 2 and platelet-derived growth factor alpha.
Does lipopolysaccharide stimulation of human aortic valve interstitial cells activate inflammation and osteogenesis?