| 1. |
- Mim, Sabiha R., et al.
(författare)
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Optimal dosing of gliclazide-A model-based approach
- 2023
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Ingår i: Basic & Clinical Pharmacology & Toxicology. - : John Wiley & Sons. - 1742-7835 .- 1742-7843. ; 133:1, s. 59-72
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Tidskriftsartikel (refereegranskat)abstract
- Gliclazide was approved as a treatment for type 2 diabetes in an era before model-based drug development, and consequently, the recommended doses were not optimised with modern methods. To investigate various dosing regimens of gliclazide, we used publicly available data to characterise the dose-response relationship using pharmacometric models. A literature search identified 21 published gliclazide pharmacokinetic (PK) studies with full profiles. These were digitised, and a PK model was developed for immediate- (IR) and modified-release (MR) formulations. Data from a gliclazide dose-ranging study of postprandial glucose were used to characterise the concentration-response relationship using the integrated glucose-insulin model. Simulations from the full model showed that the maximum effect was 44% of the patients achieving HbA1c <7%, with 11% experiencing glucose <3 mmol/L and the most sensitive patients (i.e., 5% most extreme) experiencing 35 min of hypoglycaemia. Simulations revealed that the recommended IR dose (320 mg) was appropriate with no efficacy gain with increased dose. However, the recommended dose for the MR formulation may be increased to 270 mg, with more patients achieving HbA1c goals (i.e., HbA1c <7%) without a hypoglycaemic risk higher than the resulting risk from the recommended IR dose.
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| 2. |
- Naidoo, P., et al.
(författare)
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Mechanisms for sustainable post-trial access : A perspective
- 2021
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Ingår i: SOUTH AFRICAN JOURNAL OF BIOETHICS AND LAW. - : HEALTH & MEDICAL PUBLISHING GROUP. - 1999-7639. ; 14:3, s. 77-78
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Tidskriftsartikel (refereegranskat)abstract
- Clinical trials are essential to establish the safety and efficacy of investigational products, contributing to risk/benefit assessments that ultimately determine whether these products meet the criteria for market authorisation. Clinical trials are also an important source of revenue and expertise generation for countries in which they are conducted. In developing countries, they represent substantial foreign direct investment. In spite of the substantial capital input that clinical trials require, the issue of funding post-trial access to beneficial therapies remains contentious, especially in resource-limited settings. In this article, we explore this situation and propose mechanisms to establish 'win-win' situations where both patients and clinical trial sponsors derive benefit from post-trial access programmes in low- and middle-income countries.
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| 3. |
- Raal, Frederick J., et al.
(författare)
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PCSK9 Inhibitors : From Nature's Lessons to Clinical Utility
- 2020
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Ingår i: Endocrine, Metabolic & Immune Disorders - Drug Targets. - : Bentham Science Publishers Ltd.. - 1871-5303 .- 2212-3873. ; 20:6, s. 840-854
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Forskningsöversikt (refereegranskat)abstract
- Background: Proprotein convertase subtilisin-kexin type 9 (PCSK9) inhibitors are a novel class of non-statin lipid lowering therapy that reduce LDL-cholesterol by 50 - 6044,. PCSK9 inhibitors decrease LDL-cholesterol by preventing intracellular degradation of LDL receptors; subsequently, a greater number of LDL-receptors arc available on the cell surface to extract circulating LDL. Objective: To describe the origins of PCSK9 inhibitors and their current use in clinical practice. Methods: We performed a narrative review of the PCSK9 inhibitor class of drugs Results: Current data indicate that PCSK9 inhibitors effectively reduce LDL-cholesterol and are well tolerated and safe. PCSK9 inhibitors have also been shown to reduce cardiovascular event rates in patients with stable atherosclerotic cardiovascular disease and in patients with a recent (up to one year) acute coronary syndrome. Given the costs, chronicity of the treatment and the potential budget impact, PCSK9 inhibitors are often limited to patients with the highest absolute risk for major adverse cardiovascular events despite optimal treatment with high-intensity statin and ezetimibe. Conclusion: PCSK9 inhibitors have a favorable safety, efficacy and tolerability profile. Post marketing safety surveillance and real-world studies are needed to further support the long-term safety profile of this class of medicine.
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