Clinical Research Directory

Acute and Chronic Effects of Oral Ketones in Subjects With HFrEF and Diabetes

This study will provide insight into whether cardiac function changes with oral Ketone Esters (KE) administered to patients with Type 2 Diabetes Mellitus (T2DM) and Heart failure with reduced ejection fraction (HFrEF). Plasma ketones are avidly extracted by cardiac muscle and their uptake is not dependent upon insulin or influenced by insulin resistance.

Does the Sequence of Heart Failure Medication Matter

This study will tests whether a strategy of upfront prescription of mineralocorticoid receptor antagonists (MRA) is different from usual care, where MRA are usually prescribes as the last drug of the four drug classes used in the treatment of heart failure with reduced cardiac pump function (ace-inhibitor, beta blocker, sodium-glucose-2 inhibitors, MRA). The study is a national study that intends to include all adult Danish patients diagnosed with heart failure and reduced pump function from early 2025 til early 2029. Treatment strategy will be decided by randomisation, where each heart failure clinic is randomised to one of the two strategies (upfront MRA vs. usual care) for one year, followed by cross-over to the other treatment strategy for one year. Patients will be followed according to usual care at their respective heart failure clinic. Study-specific followup will be conducted through the Danish registries for a minimum of two years. The primary goal of the study is to evaluate whether one of the two treatment strategies leads to fewer hospitalisations for heart failure and/or death at one year after study entry. Other goals of the study is to evaluate whether one of the two strategies leads to less kidney disease, improved quality of life and improved cost-effectiveness

Heart Failure With Reduced Ejection Fraction: Adjuvant Therapy With Neurostimulation and Chlorella Pyrenoidosa (HD-tDCS)

Reduced ejection fraction heart failure (HFrEF) is a complex and multifactorial condition. It is characterized by a decrease in the ability of the left ventricle to eject blood effectively during systole, resulting in an ejection fraction of less than 40%. This insufficiency in blood pumping leads to inadequate tissue perfusion and a series of adverse physiological adaptations that further compromise cardiac function, representing an important challenge in conducting treatment. The pathophysiology of HFrEF involves multiple mechanisms starting from the remodeling of the left ventricle in the face of some initial aggression, such as a heart attack, which culminates in a progressive deterioration of the contractile function. Additionally, neurohormonal systems are activated in response to the decrease in cardiac output, resulting in hyperactivation of the sympathetic nervous system and the renin-angiotensin-aldosterone axis, which leads to the activation of inflammatory cascades, mainly involving Interleukin 6 (IL-6) and Tumor Necrosis Factor Alpha (TNF-alfa), and disease progression. HFrEF is more prevalent in elderly populations and leads to increased hospital admissions. Furthermore, B12 depletion is more common in the elderly population and these two associated factors, functional impairment of the heart, disruption in the inflammatory cascade and depletion of nutrients, such as vitamin B12, can impact patients; quality of life in the long term. The reduction in B12 levels leads to changes in the cardiac and brain systems, due to the increase in homocysteine and the triggering of the inflammatory cascade. B12 supplementation through Chlorella Pyrenoidosa (microalgae - functional food) reduces cardiac damage and modulate the inflammatory cascade. And also High-Density Transcranial Direct Current Stimulation (HD-tDCS), a non-invasive technique capable of modulating neuronal excitability and inducing anti-inflammatory effects. In this sense, the objective is to evaluate the effects of HD-tDCS and the consumption of Chlorella Pyrenidosa to improve B12 levels and inflammatory response in patients with HFrEF.