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Shi J.,Beijing University of Chemical Technology | Lu C.,Beijing University of Chemical Technology | Yan D.,Chinese Institute of Materia Medica | Ma L.,Chinese Institute of Materia Medica
Biosensors and Bioelectronics | Year: 2013

In this work, based on electronic spinning resonance and chemiluminescence (CL) measurements, it is found that the reaction kinetics of Co(II)-triggered Fenton-like reaction is much faster than those of other transition metal ions, which facilitates the observation of the strong CL signals from Co(II). Utilizing the polymer-surfactant complexes (i.e., necklace model) to act as a novel CL microenvironment, a highly selective CL sensing system for the detection of Co(II) has been successfully fabricated based on the CL resonance energy transfer between the Fenton-like reaction and necklace model microenvironment-modulated carbon dots. Under optimized experimental conditions, this proposed CL system exhibits a stable response to Co(II) over a concentration range from 1.0 to 1000. nM with a detection limit as low as 0.67. nM. Finally, this system has been successfully used for the detection of Co(II) in HepG2 cells, and the results were agreed with those obtained by inductively coupled plasma mass spectrometry (ICP-MS) method. © 2013 Elsevier B.V.


Cheng Z.,Fudan University | Wu T.,Chinese Institute of Materia Medica
Combinatorial Chemistry and High Throughput Screening | Year: 2013

TLC bioautography is a method that combines chromatographic separation and in situ biological activity determination. The antimicrobial, antioxidant and enzyme inhibitory activities can be performed on TLC bioautography. This method is mainly used for preliminary screening natural products possessing these biological activities and for the bioactivity-directed fractionation and isolation of active components from complex extracts. This review covers the mechanisms and methodology of the antimicrobial, antioxidant activities, and enzyme inhibition adopted on TLC. It will be in particular discuss the recent advances in these technologies and assess their applications in targeting natural products. © 2013 Bentham Science Publishers.


Wang R.T.,Chinese Institute of Materia Medica
Zhongguo gu shang = China journal of orthopaedics and traumatology | Year: 2013

To observe effects of blood circulation promoting compounds combined with medicinal guides on content of bone glaprotein (BGP), bone morphogenetic protein-2 (BPM-2) and expression of BMP-2 mRNA in rabbits with femoral head necrosis, and explore its mechanism. Ninety-eight healthy Spragur-Dawley male rabbits were collected and weighted 2.2 to 2.8 kg. Eighty-four rabbits were built femoral head necrosis model by freezing left femoral head in liquid nitrogen, then randomly divided into 6 groups, 14 in each group. The 6 groups included model group,promoting blood circulation to remove meridian obstruction group,promoting blood circulation to remove meridian obstruction combined with achyranthes bidentata group,radix angelicae pubescentis, asarum group, and platycodon grandiflorum group,other 14 rabbits were sham operation group. While drug groups were administrated corresponding Chinese herb after molding,model group and shamp operation group were given saline. Recombinant human granulocyte-colony stimulating factor ( 30 microg x kg(-1) x d(-1))were injected into all rabbits for 7 days. Samples were taken on the second and fourth week,the content of BGP and BMP-2 were detected by enzyme-linked immunosorbent assay (ELSA) and radioimmunoassay (RIA), histopathological changes of left femoral head were observed by Hematoxylin and Eeosin staining (HE), and expression of BMP-2 mRNA were tested by fluorescence in situ hybridization. Compared with sham operation group, the rate of empty lacunae femoral head were obviously increased in model group, and the content of BGP were increased on the second week, and BMP-2 and BMP-2 mRNA were decreased on the fourth week. Compared with model group, the content of BGP, BMP-2 and BMP-2 mRNA were higher both of the second and fourth week in promoting blood circulation to remove meridian obstruction group. The rate of empty la- cunae femoral head were lower in achyranthes bidentata group, BGP, BMP-2 and BMP-2 mRNA were higher on the fourth week. The rate of empty lacunae femoral head were lower in platycodon grandiflorum group, and BGP were decreased on the second and fourth week, BMP-2 were lower on the second week ,while BMP-2 mRNA were decreased on the fourth week; the content of BMP-2 and BMP-2 mRNA were increased in radix angelicae pubescentis group on the second week; while there was no change in asarum group. Radix angelicae pubescentis can increase the content of BGP, BMP-2 and expression of BMP-2 mRNA ,which is an effective mechanism of preventing femoral head necrosis.


Deng A.-j.,Chinese Institute of Materia Medica | Qin H.-l.,Chinese Institute of Materia Medica
Phytochemistry | Year: 2010

Five dihydrobenzophenanthridine alkaloids, named as maclekarpine A-E, were isolated from the roots of Macleaya microcarpa, together with 10 known benzophenanthridine/dihydrobenzophenanthridine derivatives and a known amide. Their structures were determined on the basis of spectroscopic methods. The relative configuration of maclekarpine A was solved by X-ray single-crystal diffraction, which also contributed to the establishment of the relative configuration of maclekarpine B and C, as well as the assignment of the absolute configuration of maclekarpine A-C with aid of their CD curves. Cytotoxicity of the isolated compounds against five human tumor cell-lines was evaluated, with some having activity with IC50 values ranging from 0.1 to 3.5 μM. © 2010 Elsevier Ltd. All rights reserved.


Patent
Chinese Institute of Materia Medica | Date: 2011-03-16

The present invention relates to novel coumarin derivatives, their carboxamides, pharmaceutical compositions containing them, and their uses as drugs for kidney protection, treating drugs of hypertension, cardio-cerebrovascular diseases, non-insulin dependent diabetes, tumor, pre-cancerous lesion, and edemas.Claimed are compounds of general formula (I):^(3) is selected from the group consisting_(9)R_(4) is selected from the group consisting of hydrogen, CONHR_(10),R_(5) is selected from the group consisting of H, and C_(1)-C_(4) alkyl;R_(6) is selected from the group consisting of H, C_(1)-C_(12) alkyl, halogen, NO_(2), and CONHR_(13),R_(8) is selected from the group consisting of H, C_(1)-C_(4) alkyl or alkoxyl, NO_(2).The other variables are as defined in claims.


Patent
Chinese Institute of Materia Medica | Date: 2010-04-13

The present invention reveals a new use of neferine. Neferine regulates M8 and V1 subtype of transient receptor potential ion channel (TRPM8 and TRPV1), respectively, in mammalians, including humans, and can be used for preparing medicaments for treating disease related to said ion channel (such as hyperalgesia, Parkinsons disease, painful bladder syndrome, chronic obstructive pulmonary disease, and tumor of skin, prostate, mammary gland, lung, colon, etc). The potency of neferine in the present invention is higher than that of hexahydrothymol.


Patent
Chinese Institute of Materia Medica | Date: 2010-05-19

The invention relates to a compound of the following general formula (I):


Patent
Shijiazhuang Pharma. Group Zhongqi Pharmaceutical Technology Shijiazhuang Co. and Chinese Institute of Materia Medica | Date: 2014-01-29

The present invention discloses the use of L-butylphthalide of formula (I) in the manufacture of medicaments for the prevention and treatment of cerebral infarct, especially induced by focal cerebral ischemia.


Patent
Chinese Institute of Materia Medica | Date: 2010-04-13

The present invention reveals a new use of neferine. Neferine regulates M8 and V1 subtype of transient receptor potential ion channel (TRPM8 and TRPV1), respectively, in mammalians, including humans, and can be used for preparing medicaments for treating disease related to said ion channel (such as hyperalgesia, Parkinsons disease, painful bladder syndrome, chronic obstructive pulmonary disease, and tumor of skin, prostate, mammary gland, lung, colon, etc). The potency of neferine in the present invention is higher than that of hexahydrothymol.


Patent
Shijiazhuang Pharma. Group Zhongqi Pharmaceutical Technology Shijiazhuang Co. and Chinese Institute of Materia Medica | Date: 2016-01-20

The present invention discloses the use of L-butylphthalide of formula (I) in the manufacture of medicaments for the prevention and treatment of cerebral infarct, especially induced by focal cerebral ischemia.

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