PPARγ (Kd = 40 nM); PPARγ (EC50 = 60 nM); TRPC5 (EC50 = 30 μM); TRPM3

Rosiglitazone maleate has an EC50 of 30 nM for PPARγ1 and 100 nM for PPARγ2, respectively, and a Kd of roughly 40 nM for PPARγ, making it a strong and selective PPARγ activator. The development of C3H10T1/2 stem cells into adipocytes is aided by rosiglitazone (BRL49653, 0.1, 1, 10 μM) [1]. With an EC50 of 60 nM, compound 6 (rosiglitazone) activates PPARγ[2]. As PPARγ binds to the NF-κ1 promoter, rosiglitazone (1 μM) promotes gene transcription in neurons. Furthermore, in an NF-κ1-dependent way, rosiglitazone (1 μM) increases BCL-2 expression while shielding Neuro2A cells and hippocampus neurons from oxidative stress [3]. TRPM3 is totally blocked by rosiglitazone against nifedipine- and PregS-induced activity, with IC50 values of 9.5 and 4.6 μM, respectively. However, PPARγ is not involved in this action. An IC50 of roughly 22.5 μM indicates that rosiglitazone inhibits TRPM2 at greater dosages. EC50 of ~30 μM makes rosiglitazone a potent TRPC5 channel stimulant [4].

In diabetic rats, rosiglitazone (5 mg/kg, po) lowers blood glucose levels. Additionally, rosiglitazone decreased the diabetic group's levels of VCAM-1, TNF-α, and IL-6. When rosiglitazone and losartan were combined, blood glucose levels rose in comparison to the diabetes and Los treatment groups. In aortas isolated from diabetic rats, rosiglitazone markedly improves endothelial dysfunction as evidenced by significantly reduced contractile responses to PE and Ang II and increased ACh-induced relaxation [5].

Brain peroxisome proliferator-activated receptor gamma (PPARγ), a member of the nuclear receptor superfamily of ligand-dependent transcription factors, is involved in neuroprotection. It is activated by the drug rosiglitazone, which then can increase the pro-survival protein B-cell lymphoma 2 (BCL-2), to mediate neuroprotection. However, the mechanism underlying this molecular cascade remains unknown. Here, we show that the neuroprotective protein neurotrophic factor-α1 (NF-α1), which also induces the expression of BCL-2, has a promoter that contains PPARγ-binding sites that are activated by rosiglitazone. Treatment of Neuro2a cells and primary hippocampal neurons with rosiglitazone increased endogenous NF-α1 expression and prevented H2 O2 -induced cytotoxicity. Concomitant with the increase in NF-α1, BCL-2 was also increased in these cells. When siRNA against NF-α1 was used, the induction of BCL-2 by rosiglitazone was prevented, and the neuroprotective effect of rosiglitazone was reduced. These results demonstrate that rosiglitazone-activated PPARγ directly induces the transcription of NF-α1, contributing to neuroprotection in neurons. We proposed the following cascade for neuroprotection against oxidative stress by rosiglitazone: Rosiglitazone enters the neuron and binds to peroxisome proliferator-activated receptor gamma (PPARγ) in the nucleus. The PPARγ-rosiglitazone complex binds to the neurotrophic factor-α1 (NF-α1) promoter and activates the transcription of NF-α1 mRNA which is then translated to the protein. NF-α1 is the secreted, binds to a cognate receptor and activates the extracellular signal-regulated kinases (ERK) pathway. This in turn enhances the expression of the pro-survival protein, B-cell lymphoma 2 (BCL-2) and inhibition of caspase 3 (Csp-3) to mediate neuroprotection under oxidative stress. Akt, protein kinase B (PKB)[3].

The aim of this study was to generate new insight into chemical regulation of transient receptor potential (TRP) channels with relevance to glucose homeostasis and the metabolic syndrome. Human TRP melastatin 2 (TRPM2), TRPM3, and TRP canonical 5 (TRPC5) were conditionally overexpressed in human embryonic kidney 293 cells and studied by using calcium-measurement and patch-clamp techniques. Rosiglitazone and other peroxisome proliferator-activated receptor-γ (PPAR-γ) agonists were investigated. TRPM2 was unaffected by rosiglitazone at concentrations up to 10 μM but was inhibited completely at higher concentrations (IC(50), ∼22.5 μM). TRPM3 was more potently inhibited, with effects occurring in a biphasic concentration-dependent manner such that there was approximately 20% inhibition at low concentrations (0.1-1 μM) and full inhibition at higher concentrations (IC(50), 5-10 μM). PPAR-γ antagonism by 2-chloro-5-nitrobenzanilide (GW9662) did not prevent inhibition of TRPM3 by rosiglitazone. TRPC5 was strongly stimulated by rosiglitazone at concentrations of ≥10 μM (EC(50), ∼30 μM). Effects on TRPM3 and TRPC5 occurred rapidly and reversibly. Troglitazone and pioglitazone inhibited TRPM3 (IC(50), 12 μM) but lacked effect on TRPC5, suggesting no relevance of PPAR-γ or the thiazolidinedione moiety to rosiglitazone stimulation of TRPC5. A rosiglitazone-related but nonthiazolidinedione PPAR-γ agonist, N-(2-benzoylphenyl)-O-[2-(methyl-2-pyridinylamino)ethyl]-l-tyrosine (GW1929), was a weak stimulator of TRPM3 and TRPC5. The natural PPAR-γ agonist 15-deoxy prostaglandin J(2), had no effect on TRPM3 or TRPC5. The data suggest that rosiglitazone contains chemical moieties that rapidly, strongly, and differentially modulate TRP channels independently of PPAR-γ, potentially contributing to biological consequences of the agent and providing the basis for novel TRP channel pharmacology[4].

[1]. An antidiabetic thiazolidinedione is a high affinity ligand for peroxisome proliferator-activated receptor gamma (PPAR gamma). J Biol Chem. 1995 Jun 2;270(22):12953-6.

[2]. The structure-activity relationship between peroxisome proliferator-activated receptor gamma agonism and the antihyperglycemic activity of thiazolidinediones. J Med Chem. 1996 Feb 2;39(3):665-8.

[3]. Rosiglitazone-activated PPARγ induces neurotrophic factor-α1 transcription contributing to neuroprotection. J Neurochem. 2015 Aug;134(3):463-70.

[4]. Rapid and contrasting effects of rosiglitazone on transient receptor potential TRPM3 and TRPC5 channels. Mol Pharmacol. 2011 Jun;79(6):1023-30.

[5]. Beneficial effects of rosiglitazone and losartan combination in diabetic rats. Can J Physiol Pharmacol. 2018 Mar;96(3):215-220.

Rosiglitazone Maleate is the maleate salt of rosiglitazone, an orally-active thiazolidinedione with antidiabetic properties and potential antineoplastic activity. Rosiglitazone activates peroxisome proliferator-activated receptor gamma (PPAR-gamma), a ligand-activated transcription factor, thereby inducing cell differentiation and inhibiting cell growth and angiogenesis. This agent also modulates the transcription of insulin-responsive genes, inhibits macrophage and monocyte activation, and stimulates adipocyte differentiation.
A thiazolidinedione that functions as a selective agonist for PPAR GAMMA. It improves INSULIN SENSITIVITY in adipose tissue, skeletal muscle, and the liver of patients with TYPE 2 DIABETES MELLITUS.
See also: Rosiglitazone (has active moiety); Glimepiride; Rosiglitazone Maleate (component of); Metformin Hydrochloride; Rosiglitazone Maleate (component of).

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Drug Indication
Rosiglitazone is indicated in the treatment of type 2 diabetes mellitus: as monotherapy-in patients (particularly overweight patients) inadequately controlled by diet and exercise for whom metformin is inappropriate because of contraindications or intoleranceas dual oral therapy in combination with-metformin, in patients (particularly overweight patients) with insufficient glycaemic control despite maximal tolerated dose of monotherapy with metformin-a sulphonylurea, only in patients who show intolerance to metformin or for whom metformin is contraindicated, with insufficient glycaemic control despite monotherapy with a sulphonylureaas triple oral therapy in combination with-metformin and a sulphonylurea, in patients (particularly overweight patients) with insufficient glycaemic control despite dual oral therapy (see section 4. 4).
Rosiglitazone is indicated as oral monotherapy in type 2 diabetes mellitus patients, particularly overweight patients, inadequately controlled by diet and exercise for whom metformin is inappropriate because of contraindications or intolerance. Rosiglitazone is also indicated for oral combination treatment in type 2 diabetes mellitus patients with insufficient glycaemic control despite maximal tolerated dose of oral monotherapy with either metformin or a sulphonylurea: in combination with metformin particularly in overweight patients. in combination with a sulphonylurea only in patients who show intolerance to metformin or for whom metformin is contraindicated.
Rosiglitazone is indicated as oral monotherapy in type 2 diabetes mellitus patients, particularly overweight patients, inadequately controlled by diet and exercise for whom metformin is inappropriate because of contraindications or intolerance. Rosiglitazone is also indicated for oral combination treatment in type 2 diabetes mellitus patients with insufficient glycaemic control despite maximal tolerated dose of oral monotherapy with either metformin or a sulphonylurea: - in combination with metformin particularly in overweight patients. ­- in combination with a sulphonylurea only in patients who show intolerance to metformin or for whom metformin is contraindicated.
Alzheimer's Disease

C18H19N3O3S.C4H4O4

473.5

473.125

C, 55.81; H, 4.90; N, 8.87; O, 23.65; S, 6.77

155141-29-0

Rosiglitazone;122320-73-4;Rosiglitazone hydrochloride;302543-62-0

5281055

White to off-white solid powder

1.4±0.1 g/cm3

585ºC at 760 mmHg

235-240°C

307.6ºC

1.688

2.38

3

10

9

33

588

0

CN(CCOC1=CC=C(C=C1)CC2C(=O)NC(=O)S2)C3=CC=CC=N3.C(=C\C(=O)O)\C(=O)O

SUFUKZSWUHZXAV-BTJKTKAUSA-N

InChI=1S/C18H19N3O3S.C4H4O4/c1-21(16-4-2-3-9-19-16)10-11-24-14-7-5-13(6-8-14)12-15-17(22)20-18(23)25-15;5-3(6)1-2-4(7)8/h2-9,15H,10-12H2,1H3,(H,20,22,23);1-2H,(H,5,6)(H,7,8)/b;2-1-

(Z)-but-2-enedioic acid;5-[[4-[2-[methyl(pyridin-2-yl)amino]ethoxy]phenyl]methyl]-1,3-thiazolidine-2,4-dione

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: ≥ 2.5 mg/mL (5.28 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 25.0 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: ≥ 2.5 mg/mL (5.28 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 25.0 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: ≥ 2.5 mg/mL (5.28 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 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

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