Objective To investigate the clinical singnificance of metalloproteinase(TIMP) 1 expression in human breast cancer.Methods The expression of TIMP 1 in paraffin embedded breast carcinoma specimens from 48 patients with primary invasive breast cancer who had undergone radical mastectomy or modified radical mastectomy from January of 1990 to Dcecember of 1996 were detected by the standard streptavidin biotin peroxides method,and its correlation to clinicopathologic featurea was analyzed. Ruslts Among 48 cases,the positive expression rate of TIMP 1 was 29%, TIMP 1 expression were higher in patients with higher histological grades than in those with lower ( P

Aim To investigate the glycosidic constituents in the rhizomes of Alpinia officinarum Hance. Methods The isolation and purification of glycosides were done with column chromatography on macro porous resin, polyamides and Sephadex LH-20, whilst the structure elucidation was done by HRCI-MS and NMR (1D and 2D ) methods. Results A glycosidic ester identified as 4'-hydroxy-2'-methoxyphenol-β-D-{ 6-O-[ 4"-hydroxy-3", 5"-dimethoxy ( benzoate ) ] }-glucopyranoside ( I), along with a known compound n-butyl-β-D-fructopyranoside (II) , were isolated and characterized. Conclusion Ⅰ was found to be a new compound, named as alpinoside A, whilst Ⅱ was isolated from the genus Alpinia for the first time.

OBJECTIVETo isolate and identify chemical constituents of Cassia alata.

METHODCompounds were separated and purified by column chromatography with silica gel and Sephadex LH-20, elucidated by spectroscopic methods including 1D and 2D NMR, IR and MS techniques.

RESULTTwelve compounds were isolated from C. alata, which were identified as chrysoeriol (1), kaempferol (2), quercetin (3), 5,7,4'-trihydroflavanone (4), kaempferol-3-O-beta-D-glucopyranoside (5), kaempferol-3-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside (6), 17-hydrotetratriacontane (7), n-dotriacontanol (8), n-triacontanol (9), palmitic acid ceryl ester (10), stearic acid (11), palmitic acid (12).

CONCLUSIONCompounds 3-12 were isolated from C. alata for the first time.

Cassia ; chemistry ; Organic Chemicals ; analysis ; chemistry ; isolation & purification ; Plant Leaves ; chemistry