Four triterpenoids were isolated and purified from the 95% ethanol extract of Maytenus guangxiensis by silica gel column chromatography, Sephadex LH-20 column chromatography, MCI column chromatography and preparative RP-HPLC. Their structures were determined from their physicochemical properties and spectral data. They were identified as maytguanone A (1), maytguanone B (2), 11α-methoxyurs-12-ene-1β,3β-diol (3), lup-20(29)-ene-3β,11α-diol (4). Compounds 1 and 2 are new triterpenoids, along with compounds 3 and 4 were isolated from M. guangxiensis for the first time. The cytotoxicity of compounds 1, 3 and 4 was evaluated using the MTT procedure with three cancer cell lines. The results show that compound 3 displayed good inhibitory effects against HeLa, with an IC₅₀ of 10.68 μmol·L^-1.

Objective To investigate the regional cerebral blood flow (rCBF) in amnestic mild cognitive impairment (aMCI) and vascular cognitive impairment-no dementia (VCI-ND) subjects. Methods Sixteen normal elders, 10 patients of aMCI, 12 patients of VCI-ND who were aged from 50 to 80 years old and received an education of middle school or higher. All participants finished cranial CT or MRI. Xe-CT was used to evaluate rCBF of different cerebral regions of all participants. Results The distribution of rCBF of basal ganglia, the cortex and white matter was (76. 4 ± 8. 6), (48.0 ± 7. 1) and (20. 5 ± 1.7) ml· 100 g-1 ·min-1, respectively. When compared in 3 groups, the temporal and parietal lobe rCBF had a decreasing tendency in aMCI group, while in VCI-ND group, the most dominant decreasing parts were mainly concentrated in white matter region ((17. 7±2. 3) ml·100 g-1·min-1, F = 5. 740, P = 0. 002). Whatever the depth or the width was, beth periventricular and subeortical deep white matter, anterior and posterior ventricular regions were all involved. There are no dominant difference of rCBF in caudate nucleus, lentiform nucleus and thalamus. Conclusion The difference in rCBF reflects the pathological difference between aMCI and VCI-ND.

Objective: To investigate the cognitive impairment features in patients with amnestic mild cognitive impairment(aMCI) and vascular cognitive impairment-no dementia(VCI-ND).Methods:Sixteen normal elders,10 patients with aMCI and 12 patients with VCI-ND were recruited.The normal elders were selected from communities in Shanghai,while the aMCI and VCI-ND patients were selected from outpatient clinic.All participants ranged in age of 50～80 years,with education level of junior middle school or above,and they completed cranial CT or MRI and a series of neuropsychological tests.Results:In the three memory tests,aMCI group performed worst.The scores of both aMCI and VCI-ND groups were lower than that of the normal elders.For example,the delayed recall scores of the Rey-Osterrich complex figure test in the three groups were(18.8?9.5)(normal),(5.6?5.6)(aMCI) and(9.6?7.0)(VCI-ND)(P

Professor LI Zhi-dao, according to acupoint selection of syndrome differentiation in TCM basic theory, concluded a new therapy, namely "tonifying three qi" that is mainly based on three acupoints in the Conception Vessel. This method is consisted of Danzhong (CV 17), Zhongwan (CV 12) and Qihai (CV 6) in the Conception Vessel, which could successively nourish clear qi, stomach qi and original qi. In clinic, according to the severity of symptoms of three qi, the acupoints are selected flexibly, which could respectively treat deficiency of heart-lung qi, deficiency of stomach-spleen qi and deficiency of original qi. Some examples are also given in the article.
Acupuncture Points ; Acupuncture Therapy ; history ; methods ; China ; History, 20th Century ; History, 21st Century ; Humans ; Qi

Objective To investigate the incidence of Keshan disease(KSD) in Shandong province and to supply evidence for scientific control of the disease.Methods According to the scheme of KSD monitoring in Shandong province,the KSD cases were searched in 7 counties,and representative 3 counties and 6 villages were selected as key monitoring sites.In each site,about 420 residents were checked by asking detailed disease history,physical examination,and electrocardiography (ECG) tracings.Suspected cardiac abnormalities were taken chest posteroanterior X-ray film.At the same time,residents hair and food samples were collected to detect selenium levels in internal and external environments,and residents' income and per capita share of grain and other basic information were collected.Results ①Two hundred and fifty-nine medical units were searched,1132 cases of myocardial disease were found out and 638 suspected cases were identified and 142 chronic KSD cases were diagnosed.②In the 6 monitoring sites,2538 residents were surveyed and 91 cases of KSD were detected(of which 77 cases of potential,14 cases of chronic),the detection rate was 3.58％.A total of 2127 residents were traced ECG and the incidence of abnormal ECG was 24.5％ (521/2127),of which ST-T changes,T-wave changes,sinus bradycardia,sinus arrhymia,sinus tachycardia,and atrial premature beats et al were more common.Of the 75 X-ray films,39 cases had enlarged heart(in which 21 of mild,13 of moderate,5 of severe).③A total of 406 hair and grain samples were collected,respectively,and the selenium content of hair was approaching the level of appropriate,and the selenium content of food was still low.The annual per capita incomes of each site were between 3000 - 5900 Yuan,and residents main staple food was flour.Conclusions KSD in Shandong province is in a relatively stable situation.But latent and chronic KSD cases can still be detected.The internal environment selenium levels are elevated since the local living standards and dietary nutrition are improved.

Objective To set up and verify a new scoring system of clock drawing test(CDT).Methods CDT and other neuropsychological tests were applied to 180 normal individuals.170 subjects with mild cognitive impairment(MCI),and 31 patients with mild Alzheimer's disease(AD).The first step of the 30-score system of CDT was to anchor the 4 points of"12-3-6-9".totaling a score of 4 which was the "30-score system A(Anchoring)part";and the other 13 items reflecting the drawing results and totaling a score of 26 made up the so called"30-score system C(Clockfaee)part".the two together had a total score of 30.Thirty-eight subjects underwent Xe-enhanced computed tomography(Xe-CT)scanning for quantitively measuring regional cerebral blood flow(rCBF)of 26 regions of brain.Results Correlations coefficients of the scores of 14 items with the total score in 30-score system of CDT were in the range of 0.48to 0.71(P＜0.01).30-score system C part was closely correlated with indicators of visuospatial and executive function,while 30-score system A part with memory indicators.The sensitivity and specificity of the 30-score system A part score≤2 for detecting MCl were 70.6%and 73.9%.respectively.The sensitivity the specificity of 30-score system C part score≤17 for mild AD were 75.3%and 75.9%.respectively.In the regression equation of 30-score system A and C part.the combined independent variables were the CBF of left frontal cortex and right white matter,respectively.Conclusion The 30-score system A and C part have difierent meanings:30-score system C part could be used to identify AD while 30-score system A part is helpful for identiring MCI.

Objective To analyze the security and effectiveness of the accurate resection and reconstruction of pelvic tumor with computer navigation and to evaluate the feasibility of pelvic ring structure and mechanics reconstruction using finite element analysis.Methors From December 2008 to June 2010,tumor resections assisted by computer navigation technology and pelvic reconstructions with assembly prosthesis designed by finite element analysis were performed in 12 patients with internal hemi-pelvic malignant tumors.There were 8 male and 4 female patients,with the average age of 39.7 years(range,25-53).The malignant tumors involved chondrosarcoma(4 cases),osteosarcoma(2),Ewing sarcoma(2),malignant fibrohistiocytoma(1),and metastatic tumor(3,in which including renal cell carcinoma 1 case,thyroid carcinoma 1,and breast carcinoma 1).According to Enneking staging classification,there were 1 case in Ⅰ A,2 cases in ⅠB,2 cases in Ⅱ A.and 4 cases in Ⅱ B.The local recurrence of tumor and functional results were followed up postoperatively.Results There were no nerves,vessels and pelvic organs injuries intra-operatively.The postoperative X-rays showed that the excised regions were proper to the preoperative schedule and en bloc resections were performed in all patients.All assembly prostheses were in satisfactory position.and the screw fixation was accordance with the finite element biomechanical analysis.All the cases were followed up for average 18.2 months (range,8-26).There were 1 case with local recurrence and pulmonary metastasis,1 case with deep infection,and 1 case with deep vein thrombosis.No prosthesis dislocation,loosening,breaking,and limb length discrepancy occurred in all patients.The average MSTS93 functional score was 70%in all patients at 6 months,and 68 % in 6 patients at 20 months follow.up.Conclusion The resection and reconstruction of pelvic tumor assisted by computer navigation is a safe and effective procedure.The finite element analysis can provide accurate biomechanical guidance to the reconstruction of pelvic ring.

OBJECTIVE: To evaluate the effect of integrated traditional Chinese and Western medicine therapy on the progression of acute renal failure in patients with chronic renal insufficiency. METHODS: Thirty-two patients with chronic renal insufficiency developed acute renal failure recently were treated with Chinese herbs and western drugs intravenously and clysterizing of Chinese herbs liquid for 30 minutes, and the treatment course was 14 days. Assessment of liver and renal function, blood routine, electrolytes and endogenous creatinine clearance rate (Ccr) was performed before and 2 weeks after the treatment. RESULTS: The levels of hemoglobin (HB), white blood cell count (WBC) and serum electrolytes showed no significant changes after the treatment. The levels of blood urea nitrogen (BUN) and serum creatinine (SCr) decreased, while the level of Ccr increased significantly (P<0.05) after the treatment. The total effective rate was 65.6%. CONCLUSION: The integrated traditional Chinese and Western medicine therapy can effectively delay the deterioration of renal function in patients with chronic renal insufficiency accompanied by acute renal failure.

Objective To observe the effects of low-dose ultra-shortwaves radiationon the expression of apoptosis-related genes Bcl-2 and Bax in lens epithelial cells(LECs) of rats.Methods Thirty-six Wistar rats were divided into a normal group(n=8 eyes),a control group(n=32 eyes) and an experiment group(n=32 eyes) randomly.Both eyes of each rat in the experiment group were exposed to a low-dose ultra-shortwave radiation for 7min,once a day until the end of experiment,while the control groups were not.Rats were executed after 1 w,3w,6w and 9w.Both eyes were resected,and lens were separated under a microscope and sectioned in paraffin.After Streptavidin-Biotin Complex (SABC) staining,Bcl-2 and Bax expression in the LECs were detected using an image analysis technique,and the data were analyzed using the software of SPSS 13.0.Results The average integral optical density (AIOD) of Bcl-2 expression in the experiment group was (0.391 ± 0.014) after 1 week,(0.4470.006) after2,(0.417 ±0.011) after3 and (0.275 ±0.007) after4 weeks.The corresponding AIODs for Bax expression were (0.180 ±0.015),(0.155 ± 0.007),(0.167 ± 0.003) and (0.251 ± 0.016) respectively.After l w of daily radiation,no significant difference was found in the expressions of Bcl-2 and Bax protein between the experimental and the other 2 groups(P ＞ 0.05).Three weeks after the radiation,however,the expression of Bcl-2 protein in the experimental group was significantly higher than the control groups(P＜0.001),with that of Bax being significantly lower(P＜0.001).However,the expressions of Bcl-2 protein was significantly down-regulated and the expression of Bax protein was significantly up-regulated 6w later compared with those after3 w of exposure in the experiment group(P＜0.001) After9w,in the experimental group,the expressions of Bcl-2 protein was obviously down-regulated and significantly lower than the control group.Moreover,the expression of Bax protein increased significantly compared to the control group (P＜0.01).And there was no significant difference between the control and normal group(P＞0.05) in the expression of Bcl-2 and Bax.Conclusions Low doses of ultra-shortwave radiation may protect LECs against apoptosis for a few days,but they may cause damage with repeated exposure.

Objective To explore the changes of nitric oxide (NO) and superoxide dismutase(SOD) in the serum and intestine mucosal and the treatment of ulcerative colitis(UC) with Tanshinone.Methods Seventy-nine patients with UC were randomly divided into the treatment group(group A,n=40) and the routine treatment group(group B,n=39).Patients in the group A were given Tanshionon and routine treatment.Patients in group B were given routine treatment.The levels of NO and SOD were measured in all patients before and after the treatment.The clinical symptom,enteroscopy,and hospital day were compared in the patients of the two groups.Twenty normal healthy controls(group C) were involved in the study.Results The NO level in the serum and intestine mucosal was significantly increased and the SOD level was significantly decreased in the patients with UC compared with those of the controls(all P