In this task, you are given a passage which has a question and the context. You have to generate an answer to the question based on the information present in the context.

Context: Vitamin A plays a major role in lipid metabolism. Previously, we reported that chronic vitamin A feeding (129 mg/kg) for two months normalized the abnormally high plasma HDL-cholesterol (HDL-C) levels in hypercholesterolemic obese rats by upregulating the hepatic scavenger receptor class B type 1 (SR-BI) expression. In this report, we hypothesize that the administration of a dose less than 129 mg of vitamin A/kg would also be effective in lowering the plasma HDL-C levels in these rats.', 'Changes in the activity and expression of proteins related to RCT were analyzed together with blood parameters in five-month-old male lean and obese rats supplemented with 2.6 (control group), 26, 52 and 129 mg of vitamin A/kg as retinyl palmitate for 20 weeks.', 'Vitamin A supplementation in the obese rats decreased the plasma HDL-C levels with a concomitant increase in the hepatic SR-BI expression and lipase activity compared to that observed in the control diet-fed obese rats treated with 2.6 mg of vitamin A/kg diet. Furthermore, vitamin A supplementation at doses of 52 and 129 mg/kg diet reduced the plasma lecithin cholesterol acyltransferase activity and increased the hepatic ATP-binding cassette transporter protein A1 expression in the obese rats. Interestingly, most of these changes were not observed in the lean rats fed a vitamin A-enriched diet.\Question: Does vitamin A-enriched diet modulate reverse cholesterol transport in hypercholesterolemic obese rats of the WNIN/Ob strain?
Chronic feeding of a vitamin A-enriched diet in hypercholesterolemic obese rats normalizes the plasma HDL-C level and presumably improves RCT, with an effective dose of 52 mg/kg diet. Further studies should focus on the pharmacological potential of vitamin A supplementation to correct an abnormal human obesity-associated lipoprotein metabolism.

Context: The expression of growth-associated protein 43 (GAP-43), a marker of axonal growth, in the dorsal root ganglion (DRG) neurons innervating the lumbar intervertebral disc was assessed using the retrograde tracing method and immunohistochemistry.', 'To study whether disc inflammation affects GAP-43 expression in DRG neurons innervating the disc in rats.', 'Persistent inflammation and nerve ingrowth into the inner layer of degenerated discs can be a cause of discogenic pain. Although the presence of GAP-43-expressing nerve fibers in painful discs has been reported, the expression of GAP-43 in DRG neurons innervating the disc has not been studied.', "Seven days after the application of Fluoro-Gold to the L5-L6 disc, 50 microL of saline (n = 10, control group) or complete Freund's adjuvant (n = 10, inflammatory group) was applied to the disc in rats. Ten days after the Fluoro-Gold application, T13-L5 DRGs were double-stained with GAP-43 and either calcitonin gene-related peptide or isolectin B4 (IB4).", 'The percentage of Fluoro-Gold-labeled neurons that were positive for GAP-43 was significantly higher in the inflammatory group (44%) than in the control group (24%, P < 0.001). In both groups, the majority of GAP-43-positive neurons were small and positive for calcitonin gene-related peptide but not IB4.\Question: Does disc inflammation potentially promote axonal regeneration of dorsal root ganglion neurons innervating lumbar intervertebral disc in rats?
The present results suggest that disc inflammation potentially promotes axonal growth of DRG neurons innervating the disc. In light of the strong correlation between the expression of calcitonin gene-related peptide and nerve growth factor receptor, it is most likely that nerve growth factor-sensitive DRG neurons extend their axons following disc inflammation.

Context: To investigate whether the sequential therapy composed of high dose omeprazole and high dose amoxicillin in the first step was effective in eradication of H. pylori and whether there was a relation between effectiveness of the therapy and CYP2C19 gene polymorphism.', '134 dyspeptic patients with H. pylori were administered a modified sequential therapy composed of omeprazole 40 mg t.i.d. and amoxicillin 1000 mg t.i.d, for the first five days followed by omeprazole 20 mg b.d., metronidazole 500 mg t.i.d. and tetracycline 500 mg t.i.d, for the next five days. CYP2C19 genotype status was determined in patients. Hp eradication status was investigated by C14 UNT four weeks after treatment.', 'The eradication rates were 64.9% in ITT and 74.3% in PP analysis. In subgroup analyses, eradication rates were 73.8% and 60.8% (p: 0.145) in ITT for peptic ulcer and non-ulcer dyspepsia patients respectively and 86.1% and 69.1% (p: 0.052) in PP analysis for peptic ulcer and non-ulcer dyspepsia patients respectively. The difference was not significant. As for the CYP2C19 gene status, 81.5% of the patients had HoEM and 17.3% of the patients had HeEM, and eradication rates were 72% and 75% in ITT analysis for HoEM and HeEM respectively (p: 0.803) and 73.9% and 85.7% in PP analysis for HoEM and HeEM respectively (p: 0.347). There was not a significant difference in H. pylori eradication rates between the two groups.\Question: Is modified sequential Helicobacter pylori eradication therapy using high dose omeprazole and amoxicillin in the initial phase in the extensive metaboliser Turkish patients for CYP2C19 polymorphism ineffective?

This modified high-dose sequential therapy was ineffective in a Turkish sample, nearly all of whom had EM in terms of CYP2C19 gene status.