Rolipram咯利普兰,61413-54-5

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Rolipram

CAS No. : 61413-54-5

MCE 国际站：Rolipram

产品活性：Rolipram 是一种选择性的磷酸二酯酶 PDE4 抑制剂，抑制 PDE4A，PDE4B 和 PDE4D，的 IC₅₀ 分别为 3 nM，130 nM 和 240 nM。

研究领域：Metabolic Enzyme/Protease  |  Anti-infection

作用靶点：Phosphodiesterase (PDE)  |  Bacterial  |  HIV

In Vitro: The PDE4 selective inhibitor, Rolipram, inhibits immunopurified PDE4B and PDE4D activities similarly, with IC₅₀s of approx. 130 nM and 240 nM respectively. In contrast, Rolipram inhibits immunopurified PDE4A activity with a dramatically lower IC₅₀ of around 3 nM. Rolipram increases phosphorylation of cAMP-response-element-binding protein (CREB) in U937 cells in a dose-dependent fashion, which implies the presence of both high affinity (IC₅₀ approx. 1 nM) and low affinity (IC₅₀ approx. 120 nM) components. Rolipram dose-dependently inhibits the IFN-gamma-stimulated phosphorylation of p38 MAPK in a simple monotonic fashion with an IC₅₀ of approx. 290 nM. Rolipram is a selective PDE4 inhibitor that inhibits all PDE4 isoforms A, B, C and D. Rolipram inhibits LPS-induced TNF production in a dose-dependent manner (IC₅₀ 25.9 nM), and maximal/submaximal inhibition is observed with 2 μM drug concentration in J774 cells.

In Vivo: TNF mRNA and protein expression is induced by LPS in peritoneal macrophages (PM) from WT mice, and that is clearly (by 74 and 63% for TNF mRNA and TNF protein, respectively) inhibited by Rolipram. LPS-induced TNF production is enhanced in PM from MKP-1(-/-) mice as compared to that in PM from WT mice, which is in line with the published results. Interestingly, the inhibition of TNF mRNA and protein expression by Rolipram is markedly attenuated in PM from MKP-1(-/-) mice and does not reach statistical significance. Repeated administration of Rolipram (1.25 mg/kg, i.p.) reduces the number of escape failures in learned helplessness rats.

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