Objective:To investigate the impact of severe stenosis or occlusion of intracranial artery in anterior and posterior circulation on cognitive function in patients.Methods:Patients with Alberta stroke program early CT score(ASPECTS) and posterior circulation ASPECTS(pc-ASPECTS) of 10 were selected, and neuropsychological assessments were performed in 30 patients with intracranial artery severe stenosis or occlusion in anterior posterior circulation (anterior circulation group)and 23 patients with intracranial artery severe stenosis or occlusion in posterior circulation(posterior circulation group) and 53 control subjects using MMSE, MoCA and multidimensional psychological assessment system.Results:The scores of time orientation(control group: 5.00(5.00, 10.00), anterior circulation group: 5.00(5.00, 5.00), posterior circulation group: 5.00(5.00, 5.00)), attention (control group: 6.00(5.00, 6.00), anterior circulation group: 5.00(4.00, 6.00), posterior circulation group: 5.00(4.00, 6.00)) and word discrimination test (control group: 70.00(60.00, 82.00), anterior circulation group: 48.00(20.50, 67.50), posterior circulation group: 53.50(33.25, 75.25)) were significantly lower in patients of anterior circulation group and posterior circulation group than those of control group(all P<0.05); The scores of memory(control group: 3.00(2.00, 3.00), anterior circulation group: 2.00(1.00, 3.00), MMSE(control group: 29.00(28.00, 30.00), anterior circulation group: 28.00(26.75, 29.00)) and simple subtraction(control group: 72.00(53.50, 85.50), anterior circulation group: 53.50(37.00, 73.00)) were significantly lower in patients of anterior circulation group than those of control group(all P<0.05); The scores of visuospatial executive function(control group: 4.00(3.00, 5.00), posterior circulation group: 3.00(2.00, 4.00)) and digital sequence reasoning(control group: 74.50(51.50, 83.00), posterior circulation group: 42.00(28.00, 70.00)) were significantly lower in patients of posterior circulation group than those of control group(all P<0.05); The scores of spatial working memory test(control group: 77.50(51.75, 89.00), anterior circulation group: 56.50(34.00, 72.50), posterior circulation group: 31.00(18.50, 58.00))were significantly lower in patients of posterior circulation group than those of the other two groups(all P<0.05). Conclusion:Severe stenosis or occlusion of intracranial arteries in anterior and posterior circulation is associated with cognitive impairment in patients.Vascular lesions in different parts can lead to cognitive impairment in different aspects.

OBJECTIVETo develop a method for the determination of harpagide and harpagoside in Scrophulariae Radix (Xuanshen) by HPLC-UV under double wavelength, and to study the changes of these two constituents during processing, and to set the limitation of harpagide and harpagoside contents in crude drug and sliced pieces of Xuanshen.

METHODThe analyses were performed on an Agilent Technologies ZORBAX SB-C18 (4.6 mm x 250 mm, 5 microm) eluted with acetonitrile-water (containing 0.03% phosphoric acid) in gradient model. The flow rate was 1.0 mL x min(-1) . The column temperature was 25 degrees C. The UV detector wavelength was set at 210 nm before 13 min and then changed to 280 nm.

RESULTHarpagide and harpagoside were separated well. The linear calibration curves were obtained over of 0.0549 - 1.46 microg for harpagide (r = 0.9999, n =7) ,0.0225 - 0.900 microg for harpagoside (r = 0.9998, n = 9). The recoveries ( +/- RSD)% were 98.1 (+/- 2.4)% for harpagide and 98.8 (+/- 4.3)% for harpagoside. The contents of harpagide were 0. 277% - 0.620%, harpagoside were 0.078% - 0.362% in Xuanshen, and harpagide were 0.276% - 1.059%, harpagoside were 0. 059% - 0.183% in sliced Xuanshen, respectively. After the processing of Scrophulariae Radix, the content of harpagide increases 13.7% - 96.0%, while harpagoside decreases 11.0%-73.9%.

CONCLUSIONThis method is simple, accurate, and can be used for the quality control of Scrophulariae Radix. We propose that the total content of harpagide and harpagoside in either crude drug or sliced pieces of Scrophulariae Radix should not be less than 0.45%.

Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; isolation & purification ; Glycosides ; analysis ; isolation & purification ; Iridoid Glycosides ; Magnoliopsida ; chemistry ; Plant Roots ; chemistry ; Pyrans ; analysis ; isolation & purification ; Spectrophotometry, Ultraviolet ; methods