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Fasudil Hydrochloride

Fasudil hydrochloride is a drug being studied in clinical trials for its potential to treat various neurological and cardiovascular conditions. As a Rho kinase inhibitor, it may help improve blood flow, protect nerve cells, and reduce inflammation. Researchers are investigating fasudil’s effects in diseases like Parkinson’s, ALS, stroke, and heart conditions to determine if it could provide benefits for patients. This article summarizes some of the key clinical trials examining fasudil hydrochloride as a potential treatment option.

Table of Contents

What is Fasudil Hydrochloride?

Fasudil Hydrochloride, also known simply as Fasudil, is a medication that has shown promise in treating various medical conditions. It belongs to a class of drugs called Rho-kinase inhibitors[1]. Fasudil has been licensed in Japan since 1995 for treating vasospasms, which are sudden constrictions of blood vessels[1]. Its beneficial safety profile has made it an attractive candidate for repurposing to treat other conditions.

How Does Fasudil Work?

Fasudil works by inhibiting an enzyme called Rho-kinase (ROCK). This enzyme plays a role in various cellular processes, including the contraction of smooth muscle cells in blood vessels[2]. By inhibiting ROCK, Fasudil can help relax blood vessels, improve blood flow, and potentially provide other beneficial effects in various medical conditions.

In some diseases, such as Parkinson’s disease, Fasudil has shown neuroprotective and pro-regenerative effects. It can modulate the activity of certain cells in the brain (called microglia) and reduce the clumping of a protein called alpha-synuclein, which is associated with Parkinson’s disease[1].

Medical Conditions Treated with Fasudil

Fasudil is being studied for its potential benefits in several medical conditions:

  • Parkinson’s Disease: Researchers are investigating whether Fasudil can improve symptoms and potentially slow down the progression of Parkinson’s disease[1].
  • Amyotrophic Lateral Sclerosis (ALS): Also known as Lou Gehrig’s disease, ALS is a progressive neurological disorder. Studies are exploring if Fasudil can help slow down the progression of ALS symptoms[3][4].
  • Cardiovascular Diseases: Fasudil is being studied for its potential to improve blood flow in conditions like carotid artery stenosis (narrowing of arteries in the neck)[5].
  • Raynaud’s Phenomenon: This condition causes some areas of the body (such as fingers and toes) to feel numb and cold in response to cold temperatures or stress. Researchers are investigating if Fasudil can help improve blood flow in these cases[2].
  • Progressive Supranuclear Palsy and Corticobasal Syndrome: These are rare brain disorders affecting movement and thinking. Studies are looking at whether Fasudil can help with symptoms of these conditions[6].

How is Fasudil Administered?

The method of administering Fasudil can vary depending on the condition being treated and the specific clinical trial. Some common methods include:

  • Oral tablets: In some studies, Fasudil is given as oral tablets, with doses ranging from 30 mg to 300 mg per day[4][6].
  • Intravenous (IV) infusion: Some trials use IV infusion to deliver Fasudil directly into the bloodstream[7].
  • Intracoronary administration: In studies related to heart conditions, Fasudil may be administered directly into the coronary arteries[7].

Current Clinical Trials

Fasudil is currently being studied in several clinical trials for different conditions:

  • A study for early Parkinson’s disease patients, testing different doses of Fasudil over 3 weeks[1].
  • Trials for ALS patients, examining the safety and potential benefits of Fasudil over periods ranging from 24 weeks to 164 weeks[3][4].
  • A study for patients with carotid artery stenosis, looking at how Fasudil affects the arteries over 14 days[5].
  • An investigation into Fasudil’s effects on blood flow in patients with Raynaud’s phenomenon[2].
  • A 48-week study for patients with Progressive Supranuclear Palsy or Corticobasal Syndrome[6].

Potential Side Effects and Safety

While Fasudil has shown a generally favorable safety profile, all medications can have potential side effects. The ongoing clinical trials are carefully monitoring for any adverse events. Common methods to assess safety include:

  • Physical examinations
  • Monitoring of vital signs
  • Electrocardiograms (ECGs) to check heart function
  • Blood and urine tests
  • Brain scans (MRI) in some studies

It’s important to note that Fasudil is still considered an experimental drug for many conditions, and more research is needed to fully understand its benefits and potential risks[4][6].

Condition Study Phase Dosage Administration Key Outcomes Measured
Parkinson’s Disease Phase IIa 44 mg/day or 88 mg/day Oral solution, twice daily for 3 weeks Safety, tolerability, UPDRS scores, quality of life
Amyotrophic Lateral Sclerosis (ALS) Phase IIa 180 mg/day or 300 mg/day Oral tablets, daily for 24 weeks Safety, ALSFRS-R decline rate, muscle strength, respiratory function
ST-Elevation Myocardial Infarction Not specified 2.5 mg Intracoronary delivery during PCI Myocardial perfusion, infarct size, clinical outcomes
Carotid Stenosis Not specified 40 mg three times daily Oral tablets for 14 days Rho/ROCK expression, eNOS activity in carotid specimens
Raynaud’s Phenomenon Not specified 40 mg or 80 mg Single oral dose Skin temperature recovery, blood flow after cold challenge

FAQ

  • What is fasudil hydrochloride? Fasudil hydrochloride is a drug that inhibits an enzyme called Rho kinase. It is being studied as a potential treatment for various neurological and cardiovascular conditions due to its ability to improve blood flow and potentially protect nerve cells.
  • What conditions is fasudil being studied to treat? Clinical trials are investigating fasudil for conditions like Parkinson's disease, amyotrophic lateral sclerosis (ALS), stroke, carotid artery disease, and Raynaud's phenomenon. Researchers are examining if it can help improve symptoms or slow disease progression in these disorders.
  • How is fasudil administered in clinical trials? The method of administration varies between trials. Some use oral tablets, while others use intravenous infusions. Dosages and treatment durations also differ depending on the specific study and condition being treated.
  • What are some potential benefits being studied? Researchers are examining if fasudil can improve motor function, slow functional decline, increase blood flow, protect nerve cells, and reduce inflammation in various conditions. The specific outcomes measured depend on the disease being studied.
  • Are there any known side effects of fasudil? As with any drug, fasudil may have side effects. Clinical trials are carefully monitoring for adverse events and safety issues. Common side effects in some studies included headache and dizziness, but overall it has shown a favorable safety profile so far. More research is needed to fully understand potential risks.

Ongoing Clinical Trials on Fasudil Hydrochloride

  • Study on the Safety and Effects of Fasudil Hydrochloride for Patients with Parkinson’s Disease

    Recruiting

    1 1
    Investigated diseases:
    Investigated drugs:
    Germany

  • Study on Fasudil Hydrochloride for Memory Loss Prevention in Early Alzheimer’s Disease Patients

    Recruiting

    1
    Investigated drugs:
    Norway

Glossary

  • Rho kinase: An enzyme involved in regulating smooth muscle contraction and other cellular processes. Fasudil works by inhibiting this enzyme.
  • Amyotrophic lateral sclerosis (ALS): A progressive neurological disease that causes the neurons responsible for controlling voluntary muscle movement to degenerate and die.
  • ALSFRS-R: ALS Functional Rating Scale-Revised, a validated rating instrument used to monitor the progression of disability in ALS patients.
  • Parkinson's disease: A progressive nervous system disorder that affects movement, often including tremors, stiffness, and loss of balance.
  • Microvascular obstruction (MVO): A condition where small blood vessels in the heart become blocked, often occurring after a heart attack.
  • ST-segment elevation myocardial infarction (STEMI): A very serious type of heart attack where one of the heart's major arteries is blocked.
  • Primary PCI: Primary percutaneous coronary intervention, an emergency procedure to treat STEMI by opening blocked arteries.
  • Raynaud's phenomenon: A condition causing some areas of the body, such as fingers and toes, to feel numb and cold in response to cold temperatures or stress.
  • Carotid stenosis: A narrowing of the carotid arteries, the blood vessels that deliver blood to the brain and head.
  • eNOS: Endothelial nitric oxide synthase, an enzyme that generates nitric oxide in blood vessels, helping to regulate vascular function.

References

  1. https://clinicaltrials.gov/study/NCT05931575
  2. https://clinicaltrials.gov/study/NCT00498615
  3. https://clinicaltrials.gov/study/NCT03792490
  4. https://clinicaltrials.gov/study/NCT05218668
  5. https://clinicaltrials.gov/study/NCT00670202
  6. https://clinicaltrials.gov/study/NCT04734379
  7. https://clinicaltrials.gov/study/NCT03753269