This study was aimed to optimize extraction process of formula granules of Clematis chinensis Osbeck and establish its qualitative discrimination method. With oleanolic acid, hederagenin and extract rate as indexes, extraction technology conditions of formula granules of C. chinensis Osbeck were investigated by L9 (34) orthogonal test method. TLC was used in the qualitative discrimination of formula granules of C. chinensis Osbeck. The results showed that optimum extraction technology was: adding 12 times of water; soaking for 0.5 h; cooking for 1 h; and extracting for 3 times. TLC had the diagnostic characteristic for the distinct spot which illustrated the specificity. It was concluded that the extraction process was reasonable, simple and feasible with high extraction efficiency of ef-fective contents, which can be the scientific basis for production and quality control of formula granules of C. chin-ensis Osbeck.

This article was aimed to study on clinical application of Shanyao (Dioscorea opposita Thunb.) in each historical period, which can offer some suggestions for clinical doctors to use Shanyao correctly. A total of 668 pieces of formulae containing Shanyao were recorded from the classic format Dictionary of Traditional Chinese Medicine Formula. And then, statistic analysis was made on the emerging frequency according to its effect. The results showed that different effects of Shanyao started to be widely applied from the Song dynasty. It was most widely applied in the Ming and Qing dynasty. Nowadays, the difference between using Shanyao has been gradually decreased. During the whole historical period, clinical functions of Shanyao are mainly reinforcing the spleen and the stomach, tonifying the kidney and strengthening yin. However, clinical functions of reinforcing the kidney and restraining yin, tonifying the lung and promoting fluid are used secondly. It was concluded that the research analyzed clinical application of Shanyao in each historical period, which can offer scientific basis for clinical practice and health maintenance with the using of Shanyao.

This study was aimed to carry out the research by statistics to analyze the influence of specific clinical function of Dioscorea opposita Thunb. from the viewpoint of prescription in order to summarize its rules. Formula containing D. opposita Thunb. in the classic book of the Formula Dictionary of Traditional Chinese Medicine were recorded. The prescription type of D. opposita Thunb. was taken as the mainline. Excellwas used in the chart analy-sis. The results showed that for the function of reinforcing spleen-stomach, the effect of powder was increased, but the effect of pill was reduced. For the function of reinforcing lung and generating essence, the effect of decoction was significantly increased, but the effect of pill was significantly reduced. For the function of reinforcing kidney-yin, the effect of pill was significantly increased, but the effect of decoction was reduced. For the function of strengthening the kidney and restraining yin, the effect of powder was reduced. It was concluded that preparation had a strong in-fluence on the clinical function of D. opposita Thunb., which provided references for both clinical practice and health cultivation.

Objective To investigate whether the early use of tetramethylpyrazine(TMP) could improve the oxygenation ,reduce the rate of pulmonary lesion ,increase the survival rate and shorten the hospital days in the patients with severe acute pancreatitis (SAP) .Methods A total of 42 patients with SAP were randomly divided into the control (C) group(21 cases ,receiving the conven-tional treatment combined with the respiratory support treatment ) .The TMP group(21 cases ,receing the conventional treatment , respiratory support and TMP treatment ) .Results In the C group ,6 cases were intubated(28 .57% ) ,9 cases were acute respiratory distress syndrome(ARDS)(42 .86% ) ,the survival rate was 80 .95% ,the average hospitalization was (21 .6 ± 7 .3)d;in the TMP group ,3 cases were intubated(14 .28% ) ,6 cases were ARDS(28 .57% ) ,the survival rate was 85 .71% ,the average hospitalization was(17 .9 ± 6 .4)d .The survival rate had no statistical difference between the two groups (P>0 .05) .In addition ,the TMP group was superior to the C group in the average hospital days .Conclusion Eerly TMP interrention significantly reduced the rate of endo-tracheal intubation and the occurrence rate of ARDS ,shorten the hospital days ,but without increasing the survival rate .

The tissue engineering heart valve(TEHV) is a kind of procthetic valve that possesses the characteristics of living, self-repair and proliferation. Owing to the specific properties that are the better hemodyna-mics, low or even no immunological reaction, no need for long-time anticoagulation therapy and longer durability, the ideal TEHV can overcome the drawback of current available valve substitutes which are mechanical prostheses and biological heart valves. In this paper we reviewed the recent development of the TEHV in such aspects, as biomaterial, cultivating environment, seed cells and so on. In addition, we briefly introduced the perspective of using human embryonic stem cells as the source for seed cells in TEHV.

Objective To develop an ion chromatography (IC) for simultaneous determination of chlorite,chlorate and bromate in drinking water. Methods The IC separation was carried out with the IonPAC AS23 column by using 4.5 mmol/L Na2CO3-0.8 mmol/L NaHCO3 at the flow rate of 1.0 ml/min. The injection volume was 250 ?l,the temperature of conductivity detector cell and column were 30 ℃ and 35 ℃,respectively. The pressure upon the bottle of mobile phase was 40 kPa. The current of auto-regenerating suppressor was 25 mA. Results The results showed that in the range of 0 to 1 000 mg/L, the calibration equation for chlorite was y=0.009 6+1.600 0 x (r=0.999 3),for bromate was y=0.003 2+3.184 7 x (r=0.999 9),for chlorate was y= 0.001 8+1.788 9 x(r=0.999 9).The detection limit of chlorite,chlorate and bromate were all 5 ?g/ L,the recovery rates were 89.0% -108.0% and the relative standard deviations (RSD) were 0.21%-2.70%. Conclusion The method is simple,fast,accurate, sensitive,little interference and is applicable to the simultaneous determination of chlorite,chlorate and bromate in drinking water.

Fifteen liposoluble compouuds were isolated and identified from the rhizomes of Drynaria fortunei (Kunze) J.Sm.. They are: diploptene(Ⅰ); hop-21-ene(Ⅱ); diplopterol(Ⅲ); fern9(11) -ene(Ⅳ); cyclolaudenol(Ⅴ); cyclomargenol(Ⅵ); cyclolaudenone (Ⅶ); n-dotriacontanic acid(Ⅷ); ?-sitosterol(Ⅸ); 25-en-cycloartenol(Ⅹ); 25-en-cycloartenone(Ⅺ); 24-en-cycloartenol(Ⅻ); 24-en-cycloartenone; 5-stigmasten-3-ol; 5-stigmasten-3-one Apart from Ⅰ,Ⅳ and Ⅸ, the rest had not been found in this fern since.

ABSTRACT Atherosclerosis (AS) is the principle cause of cardiovascular disease. For many years, AS was regarded as irreversible. However, recent accumulated evidence suggests that AS can regress with proper manipulation. Studies from animal models show that low cholesterol diet can induce obvious regression of AS plaques; Drugs, such as probucol, clolestyramine, lovastatin, isradipine, fosinopril, etc, can reverse the AS respectively by manipulating plasma lipoprotein, scavenging free radicals, blocking calcium channel or inhibiting an-giotensin converting enzyme. Clinical trials furthersubstantiate that good lifestyle and effective control of plasma lipoprotein can reduce clinical events and cause AS plaques regression. Although, AS plaques can regress is no longer in doubt, the mechanism is still unknown. The HDL-mediated reverse cholesterol transport system, apoptosis of the plaque cells may play an important role.

The afferent connections of the preoptic region in the rat were studied with retrograde horseradish peroxidase (HRP) method.The mico-injection syringe needle or microelectrophoretic pipette was inserted vertically into the brain. In some cases, the injection was made with the needle inclined and directed contralaterally or in inclined direction through the cerebellum.The results were as follows:Following HRP injection into the medial preoptic area, labeled neurons were found in periventricular hypothalamic gray, paraventricular nucleus, anterior hypothalamic nucleus, supraoptic nucleus, ventromedial hypothalamic nucleus, posterior hypothalamic nucleus and locus coeruleus in all cases. In some cases, labeled cells were also observed within bed nucleus of stria terminalis, dorsal raphe nucleus. In addition, in a few cases, a small number of labeled cells could be found in lateral septal nucleus, medial septal nucleus, periaqueductal gray matter and interpeduncular nucleus.After injection into the region between the medial and lateral preoptic area, besides the above mentioned labeled nuclei, there were still a number of labeled cells found in paratenial nucleus, nucleus reuniens and lateral hypothalamic nucleus, in some cases also found in the supramammillar nucleus, and in one case even in the cortical and medial amygdalar nuclei.Following the injection of HRP into the anterior hypothalamic nucleus, retrograde labeling of neurons was observed within the lateral septal nucleus, preoptic periventricular nucleus, medial preoptic nucleus, supraoptic nucleus, periventricular hypothalamic nucleus, paraventricular nucleus, ventromedial hypothalamic nucleus, periaqueductal gray matter and locus coeruleus in all cases. Among them, supraoptic and paraventricular nuclei were labeled bilaterally in some cases.