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190648-49-8

中文名稱 CIPEMASTAT
CAS 190648-49-8
分子式 C22H36N4O5
分子量 436.545
MOL 文件 190648-49-8.mol
190648-49-8 結(jié)構(gòu)式 190648-49-8 結(jié)構(gòu)式

基本信息

英文別名
Ro 32-3555
(αR,βR)-β-(Cyclopentylmethyl)-N-hydroxy-γ-oxo-α-[(3,4,4-trimethyl-2,5-dioxo-1-imidazolidinyl)methyl]-1-piperidinebutanamide

物理化學(xué)性質(zhì)

儲(chǔ)存條件-20°C儲(chǔ)存

常見問題列表

生物活性
Cipemastat 是一種有效的、人膠原酶 (collagenase) 1,2,3的抑制劑,其 Ki 值分別為 3.0,4.4,3.4 nM。
靶點(diǎn)

collagenases 1

3.0 nM (Ki)

collagenases 2

4.4 nM (Ki)

collagenases 3

3.4 nM (Ki)

stromelysins 1

527 nM (Ki)

gelatinase A

154 nM (Ki)

gelatinase B

59.1 nM (Ki)

體外研究

Cipemastat (Ro 32-3555) is a potent, competitive inhibitor of human matrix metalloproteinases. Cipemastat is selective for collagenase 1, 2 and 3 relative to related matrix metalloproteinases. Cipemastat is also a potent inhibitor of rat collagenase (IC 50 =44.7±3.4 nM (n=4)). In vitro cartilage degradation ± inhibited IL-1a induced cartilage degradation in vitro in a concentration-dependent manner with an IC 50 =60 nM. The inhibition is not mediated by a cytotoxic action on explant chondrocytes. Cipemastat, at all concentrations tested, fail to modify glucose utilization when compared to explants cultured in the presence of IL-La alone.

體內(nèi)研究

The amount of hydroxyproline in non-implanted cartilage is 119.3±4.2 nM/mg and this decreases in cartilages implanted in vehicle-dosed animals to 53.6±7.1 nM/mg over a fourteen day period. Animals administered Cipemastat orally at doses of 2.5, 5, 10 and 25 mg/kg show statistically increased levels of implanted cartilage hydroxypro-line. Fourteen days after the second challenge injection of P. acnes , the area of cartilage most consistently affected by pannus is the lateral femoral condyle, which is the area analysed. In non-arthritic animals the mean cartilage area is 0.17±0.02 mm 2 (n=5). In arthritic animals there is a significant decrease to a mean area of 0.086±0.01 mm 2 (n=10). The group of animals dosed with Cipemastat (50 mg/kg, p.o.) show a significantly greater area of cartilage with a mean value of 0.126±0.012 mm 2 (n=9). The pannus area in vehicle-dosed animals is 0.099±0.017 mm 2 and in Cipemastat dosed animals 0.102±0.019 mm 2 . Adjuvant arthritis injection of adjuvant induced two phases of swelling of the injected paw in vehicle-dosed rats. The primary swelling phase occurred between days 0 to 5 and induced an increase in paw volume of 1.9±0.1 mL; the secondary phase occurrs between day 9 to 14 and there was an increase in paw swelling of 0.98±0.08 mL. The group of animals dosed with dexamethasone (0.1 mg/kg) shows a significant reduction in both primary (0.2±0.03 mL) and secondary inflammation (0.07±0.08 mL) paw swelling as well as total inhibition of the lesion score.

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