Current and emerging pharmacotherapy for ischemic stroke prevention in patients with atrial fibrillation

Orsolya Székely1, Kazuo Miyazawa1, Gregory Yoke Hong Lip1,2,3

  • 1a Institute of Cardiovascular Sciences , University of Birmingham , Birmingham , UK.

Insights

Atrial fibrillation (AF) stroke prevention relies on anticoagulation. While novel oral anticoagulants (NOACs) offer advantages over vitamin K antagonists (VKAs), limitations necessitate developing new anticoagulant strategies.

Area of Science:

  • Cardiology
  • Pharmacology
  • Hematology

Background:

  • Atrial fibrillation (AF) increases stroke risk via thromboembolism.
  • Anticoagulation is crucial for preventing thromboembolic events in AF patients.
  • Traditional anticoagulants include heparin, fondaparinux, and vitamin K antagonists (VKAs).

Purpose of the Study:

  • To review current and emerging pharmacotherapies for ischemic stroke prevention in AF.
  • To examine novel targets within the coagulation cascade for anticoagulant drug development.
  • To assess investigational anticoagulant drugs in preclinical and clinical studies.

Main Methods:

  • Literature review of current and emerging anticoagulant therapies.
  • Analysis of data on novel therapeutic targets in the coagulation cascade.
  • Evaluation of preclinical and clinical studies on investigational anticoagulant drugs.

Main Results:

  • Non-vitamin K antagonist oral anticoagulants (NOACs) represent a significant advancement over VKAs.
  • NOACs offer improved efficacy, safety, and convenience compared to VKAs.
  • Limitations of NOACs include use in severe renal impairment, mechanical heart valves, high bleeding risks, and lack of standard monitoring/reversal agents.

Conclusions:

  • Despite NOAC advancements, limitations persist, driving research into new anticoagulant strategies.
  • Development of novel anticoagulants targeting the hemostatic pathway is ongoing.
  • Future research aims to overcome current limitations and improve stroke prevention in AF.

Related Concept Videos

Amyloid Fibrils03:03

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining,...
11.9K
Amyloid Fibrils03:03

Amyloid Fibrils

6.4K
Psychosis: Goals of Pharmacotherapy01:26

Psychosis: Goals of Pharmacotherapy

Antipsychotic drugs are a crucial treatment method for acute and chronic psychoses, bipolar illness, and behavioral disorders. The selection of these drugs depends on several factors, including the state of the disease, clinical judgment, possible drug interactions, and the patient's sensitivity to adverse effects. In immediate scenarios, such as delirium and dementia, short-term treatment with low doses of high-potency typical or atypical agents can effectively manage symptom exacerbation.
536
Diabetes: Management and Pharmacotherapy01:15

Diabetes: Management and Pharmacotherapy

The therapy for diabetes aims to alleviate hyperglycemia-related symptoms, prevent acute metabolic decompensation, and reduce chronic end-organ complications. Glycemic control is evaluated through short-term (self-monitoring, continuous glucose monitoring) and long-term (A1c, fructosamine) metrics, enabling near real-time tracking of blood glucose levels and reflecting glycemic control over specific time frames.
Insulin remains the cornerstone of treatment for most patients with type 1 and many...
1.1K
Emerging Adulthood01:27

Emerging Adulthood

Jeffrey Arnett's concept of emerging adulthood offers a framework to understand the unique developmental stage between adolescence and full-fledged adulthood, generally from ages 18 to 25. This period is marked by extensive exploration and shifts in identity, relationships, and career choices, a process known in psychology as role experimentation. Emerging adulthood reflects the evolving cultural expectations surrounding adulthood and the dynamic process of personal transformation during...
688
Fibril-associated Collagen01:11

Fibril-associated Collagen

Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix.
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
3.4K