Research Articles (Cardiology)
Permanent URI for this collection
Browse
Browsing Research Articles (Cardiology) by Author "Burgess, L. J."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
- ItemFDA abandons the declaration of Helsinki : the effect on the ethics of clinical trial conduct in South Africa and other developing countries(Health and Medical Publishing Group (HMPG), 2012-12) Burgess, L. J.; Pretorius, D.Four years ago, the US Food and Drug Administration (FDA) ceased compliance with the Declaration of Helsinki (DoH) (2000 revision and all subsequent revisions) for conduct of clinical trials outside its borders. It instead ruled that compliance with the Good Clinical Practices (GCP) of the International Conference of Harmonization (ICH) is sufficient. However, the ICH-GCP guidelines do not address certain ethical requirements stipulated in the DoH, such as the use of placebos v. standard therapy, post-trial access to treatment and other benefits for participants; public disclosure of trial design; publication of trial results; and disclosure of conflicts of interest. The FDA’s adoption of less morally stringent guidelines could encourage pharmaceutical companies to take ethical short cuts. It could also have practical consequences for trial ethics in developing countries, especially where research ethics committees may not be promoting high standards of protection for participants in clinical trials, due to lack of financial and human resources. Pharmaceutical companies may also pressurise research ethics committees to relax guidelines and legislation, in order to facilitate future clinical trials in developing and emerging countries that lack the resources to conduct their own clinical research on epidemics such as HIV/ AIDS, which have devastating effects on their populations.
- ItemGCP accreditation - a worthwhile investment(Health & Medical Publishing Group, 2006) Burgess, L. J.; Sulzer, N. U.[No abstract available]
- ItemRandomized, placebo-controlled trial of mipomersen in patients with severe hypercholesterolemia receiving maximally tolerated lipid-lowering therapy(PLoS, 2012-11-13) McGowan, M. P.; Tardif, J. C.; Ceska, R.; Burgess, L. J.; Soran, H.; Gouni-Berthold, I.; Wagener, G.; Chasan-Taber, S.Objectives: Mipomersen, an antisense oligonucleotide targeting apolipoprotein B synthesis, significantly reduces LDL-C and other atherogenic lipoproteins in familial hypercholesterolemia when added to ongoing maximally tolerated lipid-lowering therapy. Safety and efficacy of mipomersen in patients with severe hypercholesterolemia was evaluated. Methods and Results: Randomized, double-blind, placebo-controlled, multicenter trial. Patients (n = 58) were $18 years with LDL-C $7.8 mmol/L or LDL-C $5.1 mmol/L plus CHD disease, on maximally tolerated lipid-lowering therapy that excluded apheresis. Weekly subcutaneous injections of mipomersen 200 mg (n = 39) or placebo (n = 19) were added to lipid-lowering therapy for 26 weeks. Main outcome: percent reduction in LDL-C from baseline to 2 weeks after the last dose of treatment. Mipomersen (n = 27) reduced LDL-C by 36%, from a baseline of 7.2 mmol/L, for a mean absolute reduction of 2.6 mmol/L. Conversely, mean LDL-C increased 13% in placebo (n = 18) from a baseline of 6.5 mmol/L (mipomersen vs placebo p,0.001). Mipomersen produced statistically significant (p,0.001) reductions in apolipoprotein B and lipoprotein(a), with no change in high-density lipoprotein cholesterol. Mild-to-moderate injection site reactions were the most frequently reported adverse events with mipomersen. Mild-to-moderate flu-like symptoms were reported more often with mipomersen. Alanine transaminase increase, aspartate transaminase increase, and hepatic steatosis occurred in 21%, 13% and 13% of mipomersen treated patients, respectively. Adverse events by category for the placebo and mipomersen groups respectively were: total adverse events, 16(84.2%), 39(100%); serious adverse events, 0(0%), 6(15.4%); discontinuations due to adverse events, 1(5.3%), 8(20.5%) and cardiac adverse events, 1(5.3%), 5(12.8%). Conclusion: Mipomersen significantly reduced LDL-C, apolipoprotein B, total cholesterol and non-HDL-cholesterol, and lipoprotein(a). Mounting evidence suggests it may be a potential pharmacologic option for lowering LDL-C in patients with severe hypercholesterolemia not adequately controlled using existing therapies. Future studies will explore alternative dosing schedules aimed at minimizing side effects.