p160ROCK (Ki = 0.33 μM); ROCK2 (IC50 = 0.158 μM); PKA (IC50 = 4.58 μM); PKC (IC50 = 12.30 μM); PKG (IC50 = 1.65 μM)

In rat HSCs (hepatic stellate cells) and human HSC-derived TWNT-4 cells, facsudil hydrochloride (100 μM) suppresses cell development by blocking cell spreading, stress fiber production, and α-SMA expression[4]. In rat HSCs and human HSC-derived TWNT-4 cells, Fasudil Hydrochloride (50-100 μM; 24 hours) suppresses the phosphorylation of ERK1/2, JNK, and p38 caused by LPA (lysophoaphatidic acid)[4]. In human HSC-derived TWNT-4 cells, facdilin hydrochloride (25–100 μM; 24 hours) promotes MMP-1 transcription while suppressing collagen and TIMP transcription[4].

When administered intravenously one hour before to surgery, facudil hydrochloride (10 mg/kg) has been shown to protect against cardiovascular disease, inhibit JNK activation, and lessen the amount of AIF that is translocated between the mitochondria and nucleus during ischemia[5]. ?Fasudil hydrochloride (50 mg/kg/d; ip) suppresses the proteolipid protein PLP p139-151, which causes acute and relapsing experimental autoimmune encephalomyelitis (EAE). It also decreases lymphocyte proliferation, downregulates interleukin (IL)-17, and significantly lowers the IFN-γ/IL-4 ratio[6]. ?Fasudil hydrochloride (100 mg/kg/d; po) suppresses inflammation, demyelination, axonal loss, and APP positivity in the mouse spinal cord. It also considerably lowers the incidence and pathological examination score of experimental autoimmune encephalomyelitis (EAE) in SJL/J mice[6].

Cyclic AMP-dependent protein kinase activity is assayed in a reaction mixture containing, in a final volume of 0.2 mL, 50 mM Tris-HCl (pH 7.0), 10 mM magnesium acetate, 2 mM EGTA, 1 μM cyclic AMP or absence of cyclic AMP, 3.3 to 20 μM [r-32P] ATP (4×105 c.p.m.), 0.5 μg of the enzyme, 100 μg of histone H2B and compound. The mixture is incubated at 30°C for 5 min. The reaction is terminated by adding 1mL of ice-cold 20% trichloroacetic acid after adding 500 μg of bovine serum albumin as a carrier protein. The sample is centrifuged at 3000 r.p.m. for 15min, the pellet is resuspended in ice-cold 10% trichloro-acetic acid solution and the centrifugation-resuspension cycle is repeated three times. The final pellet is dissolved in 1 mL of 1 N NaOH and radioactivity is measured with a liquid scintillation counter.

Western Blot Analysis[4]
Cell Types: Rat HSCs and human HSC-derived TWNT-4 cells
Tested Concentrations: 50 μM; 100 μM
Incubation Duration: 24 hrs (hours)
Experimental Results: Suppressed the LPA-induced phosphorylation of ERK1/2, JNK and p38 MAPK by 60%, 70%, and 90%, respectively.

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RT-PCR[4]
Cell Types: Rat HSCs and human HSC-derived TWNT-4 cells
Tested Concentrations: 25 μM; 50 μM; 100 μM 24 hrs (hours)
Incubation Duration: 24 hrs (hours)
Experimental Results: decreased the expression of type I collagen, a-SMA, and TIMP-1.

Animal/Disease Models: Myocardial ischemia and reperfusion in rat (250-300 g)[5]
Doses: 10 mg/kg
Route of Administration: intravenous (iv) injection; 1 h before operation
Experimental Results: Activated the Rho-kinase, JNK, and resulted AIF translocated to the nucleus. Inhibited Rho-kinase activity, and decreased myocardial infarct size and heart cell apoptosis.

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We studied the role of fasudil, a selective Rho-kinase inhibitor, in experimental autoimmune encephalomyelitis (EAE). Both parenteral and oral administration of fasudil prevented the development of EAE induced by proteolipid protein (PLP) p139-151 in SJL/J mice. Specific proliferation of lymphocytes to PLP was significantly reduced, together with a downregulation of interleukin (IL)-17 and a marked decrease of the IFN-gamma/IL-4 ratio. Immunohistochemical examination also disclosed a marked decrease of inflammatory cell infiltration, and attenuated demyelination and acute axonal transaction. These results may provide a rationale of selective blockade of Rho-kinase by oral use of fasudil as a new therapy for multiple sclerosis.[7]

rat LD50 oral 335 mg/kg SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE; BEHAVIORAL: TREMOR; BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD Yakuri to Chiryo. Pharmacology and Therapeutics., 20(Suppl
rat LD50 subcutaneous 123 mg/kg SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE; BEHAVIORAL: TREMOR; BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD Yakuri to Chiryo. Pharmacology and Therapeutics., 20(Suppl
rat LD50 intravenous 59900 ug/kg SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE; BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD; GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS Yakuri to Chiryo. Pharmacology and Therapeutics., 20(Suppl
mouse LD50 oral 274 mg/kg SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE; BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX); BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD Yakuri to Chiryo. Pharmacology and Therapeutics., 20(Suppl
mouse LD50 subcutaneous 124 mg/kg SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE; BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX); BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD Yakuri to Chiryo. Pharmacology and Therapeutics., 20(Suppl

[1]. Fasudil and its analogs: a new powerful weapon in the long war against central nervous system disorders? Expert Opin Investig Drugs. 2013 Apr;22(4):537-50.

[2]. The effects of fasudil on the permeability of the rat blood-brain barrier and blood-spinal cordbarrier following experimental autoimmune encephalomyelitis. J Neuroimmunol. 2011 Oct 28;239(1-2):61-7.

[3]. Calcium sensitization of smooth muscle mediated by a Rho-associated protein kinase in hypertension. Nature. 1997 Oct 30;389(6654):990-4.

[4]. Fasudil hydrochloride hydrate, a Rho-kinase (ROCK) inhibitor, suppresses collagen production and enhances collagenase activity in hepatic stellate cells. Liver Int. 2005 Aug;25(4):829-38.

[5]. Choline metabolism provides novel insights into nonalcoholic fatty liver disease and its progression. Curr Opin Gastroenterol. 2012 Mar;28(2):159-65.

[6]. Inhibition of the activity of Rho-kinase reduces cardiomyocyte apoptosis in heart ischemia/reperfusion via suppressing JNK-mediated AIF translocation. Clin Chim Acta. 2009 Mar;401(1-2):76-80.

[7]. The selective Rho-kinase inhibitor Fasudil is protective and therapeutic in experimental autoimmune encephalomyelitis. J Neuroimmunol. 2006 Nov;180(1-2):126-34. Epub 2006 Sep 22.

Fasudil hydrochloride is a hydrochloride obtained by reaction of fasudil with one equivalent of hydrochloric acid. It has a role as an antihypertensive agent, a calcium channel blocker, an EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor, a neuroprotective agent, a nootropic agent and a vasodilator agent. It contains a fasudil(1+).

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Drug Indication
Treatment of non-traumatic subarachnoid haemorrhage.

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Fasudil is an isoquinoline substituted by a (1,4-diazepan-1-yl)sulfonyl group at position 5. It is a Rho-kinase inhibitor and its hydrochloride hydrate form is approved for the treatment of cerebral vasospasm and cerebral ischemia. It has a role as a geroprotector, an EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor, a vasodilator agent, a nootropic agent, a neuroprotective agent, an antihypertensive agent and a calcium channel blocker. It is a N-sulfonyldiazepane and a member of isoquinolines. It is a conjugate base of a fasudil(1+).
Fasudil has been investigated in Carotid Stenosis.

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Introduction: Rho kinase (ROCK) plays a critical role in actin cytoskeleton organization and is involved in diverse fundamental cellular functions such as contraction and gene expression. Fasudil, a ROCK inhibitor, has been clinically applied since 1995 for the treatment of subarachnoid hemorrhage (SAH) in Japan. Increasing evidences indicate that fasudil could exhibit markedly therapeutic effect on central nervous system (CNS) disorders, such as Alzheimer's disease. Areas covered: This article summarizes results from supporting evidence for the potential therapy for fasudil against a variety of CNS diseases. And the properties of its analogs are also summarized. Expert opinion: Current therapies against CNS disorders are only able to attenuate the symptoms and fail in delaying or preventing disease progression and new approaches with disease-modifying activity are desperately needed. The dramatic effects of fasudil in animal models and/or clinical applications of CNS disorders make it a promising strategy to overcome CNS disorders in human beings. Given the complex pathology of CNS disorders, further efforts are necessary to develop multifunctional fasudil derivatives or combination strategies with other drugs in order to exert more powerful effects with minimized adverse effects in the combat of CNS disorders. https://pubmed.ncbi.nlm.nih.gov/23461757/

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Dysfunction of the blood-brain barrier (BBB) and blood-spinal cord barrier (BSCB) is a primary characteristic of multiple sclerosis (MS). We evaluated the protective effects of fasudil, a selective ROCK inhibitor, in a model of experimental autoimmune encephalomyelitis (EAE) that was induced by guinea-pig spinal cord. In addition, we studied the effects of fasudil on BBB and BSCB permeability. We found that fasudil partly alleviated EAE-dependent damage by decreasing BBB and BSCB permeability. These results provide rationale for the development of selective inhibitors of Rho kinase as a novel therapy for MS. https://pubmed.ncbi.nlm.nih.gov/21978848/

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Background/aims: The Rho-ROCK signaling pathways play an important role in the activation of hepatic stellate cells (HSCs). We investigated the effects of fasudil hydrochloride hydrate (fasudil), a Rho-kinase (ROCK) inhibitor, on cell growth, collagen production, and collagenase activity in HSCs. Methods: Rat HSCs and human HSC-derived TWNT-4 cells were cultured for studies on stress fiber formation and alpha-smooth muscle actin (alpha-SMA) expression. Proliferation was measured by BrdU incorporation, and apoptosis by TUNEL assay. The phosphorylation states of the MAP kinases (MAPKs), extra cellular signal -regulated kinase 1/2 (ERK1/2), c-jun kinase (JNK), and p38 were evaluated by western blot analysis. Type I collagen, matrix metalloproteinase-1 (MMP-1) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) production and gene expression were evaluated by ELISA and real-time PCR, respectively. Collagenase activity (active MMP-1) was also evaluated. Results: Fasudil (100 microM) inhibited cell spreading, the formation of stress fibers, and expression of alpha-SMA with concomitant suppression of cell growth, although it did not induce apoptosis. Fasudil inhibited phosphorylation of ERK1/2, JNK, and p38. Treatment with fasudil suppressed the production and transcription of collagen and TIMP, stimulated the production and transcription of MMP-1, and enhanced collagenase activity. Conclusion: These findings demonstrated that fasudil not only suppresses proliferation and collagen production but also increases collagenase activity. https://pubmed.ncbi.nlm.nih.gov/15998434/

C14H17N3O2S.HCL

327.83

327.0808

C, 51.29; H, 5.53; Cl, 10.81; N, 12.82; O, 9.76; S, 9.78

105628-07-7

Fasudil;103745-39-7;Fasudil dihydrochloride; 203911-27-7; 105628-07-7 (HCl); 186694-02-0 (hydrochloride hydrate)

163751

Typically exists as White to off-white solids at room temperature

506.2ºC at 760 mmHg

222 °C(dec.)

259.9ºC

4.17

2

5

2

21

421

0

Cl[H].S(C1=C([H])C([H])=C([H])C2C([H])=NC([H])=C([H])C1=2)(N1C([H])([H])C([H])([H])N([H])C([H])([H])C([H])([H])C1([H])[H])(=O)=O

LFVPBERIVUNMGV-UHFFFAOYSA-N

InChI=1S/C14H17N3O2S.ClH/c18-20(19,17-9-2-6-15-8-10-17)14-4-1-3-12-11-16-7-5-13(12)14;/h1,3-5,7,11,15H,2,6,8-10H2;1H

5-(1,4-diazepan-1-ylsulfonyl)isoquinoline;hydrochloride

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Solubility in Formulation 1: ≥ 2.08 mg/mL (6.34 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

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Solubility in Formulation 2: ≥ 2.08 mg/mL (6.34 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

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Solubility in Formulation 3: ≥ 2.08 mg/mL (6.34 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

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Solubility in Formulation 4: Saline: 30 mg/mL

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Solubility in Formulation 5: 100 mg/mL (305.04 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication.

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 (Please use freshly prepared in vivo formulations for optimal results.)