Objective to establish a method used for qualitative and quantitative determination of the cyanide in biological samples by using HS/GC/ECD. Method C1CN was formed as the choramines-T derivative through reaction of the potassium cyanide with chloramines-T and then was analyzed by GC/ ECD/HS. Results if 0.2ug potassium cyanide was added to 1ml blood sample, the recovery was 84.6% and RSD was 6.39%. If 0.5ug potassium cyanide was added to 1. 0g liver, the recovery was 67.3 % and RSD was 5.05%. The detection limit of blood sample was 5ng/ml. Conclusion This method can be used for analyzing the cyanide in biological samples quantitatively.

AIM To determine the contents of chemical consituents in Lycii Fructus from Qaidam Basin.METHODS Spectrophotometry was adopted in the content determination of polysaccharides,total flavonoids and carotenoid.HPLC was applied to the content determination of betaine and scopoletin.Kjeldahl method was used for the content determination of protein.Then principal component analysis was performed.RESULTS The contents of carotenoid,betaine and scopoletin in samples from six growing areas showed obvious differences (P ＜ 0.05),while those of polysaccharides,total flavonoids and protein exhibited no obvious differences (P ＞ 0.05).The contents of various constituents in samples at three picking time also had no obvious differences (P ＞ 0.05).The comprehensive score of principal components of samples from Delingha City was the highest,followed by that from Ulan County.CONCLUSION The quality of Lycii Fructus from Qaidam Basin from Delingha City is the best.

Objective To investigate the DNA methylation of skeletal muscle in spastic paralysis rats and correlation with the muscle fiber configuration. Methods 100 5-day old Wistar rats were randomly divided into model group and control group. The former was established the spastic paralysis modle and reared for 30 days. Then, tissues from the gastrocnemius of all the rats were observed with triplicate DNA methylation, myosin heavy chain-I (MHC-I) mRNA with RT-PCR and transmission electron microscopy. Results The DNA methylation was (4.95±0.83)×10% in the model group, significantly less than (6.59±0.75)×10% in the control group (P<0.001); while the MHC-I mRNA was (1.23±0.31), significantly more than (0.44±0.29) in the control group (P<0.001). The Z-line was disordered, and the mitochondria near the Z-line increased, with edema and partially broken in cristae. The balance between the thick and thin filaments was broken, and myofibrils envelope fused. Conclusion Hypomethylation and hyperexpression of MHC-I mRNA have been found in skeletal muscle of spastic paralysis rats, which may result in type I fibers increase. However, there was no sufficient evidence to support the correlation between the DNA methylation and the secondary pathological changes.

Objective To explore the correlation between the incidence of abdominal and pelvic artery distortion and age using dig-ital three-dimensional reconstruction,in order to assess risk in uterine artery embolization surgical approach.Methods Collecting the CTA datasets of 475 patients,group A aged 11-27 (n=40),group B aged 28-44(n=218),group C aged 45-61(n=197), group D aged 62-78(n=20).The 3D model of pelvic arteries was reconstructed by mimics software,and the arterial distortion was recorded by rotating and observing the 3D model,which was further classified into three categories.One was the distortion of the aorta only,the second was the distortion of iliac artery,and the third being distortion of both sturctures.the number of cases appeared arterial distortion in every age group was calculated and the ratio of the total cases to each age group was counted.Results There were 128(26.9%)cases appeared arterial distortion,the last 347(73.1%)were not found distortion in any artery.Of the 128 cases,the occurrence rates of arterial distortion in each age group were 2.5%、11.9%、44.7%、65% for group A,B,C and D respec-tively.Pearson linear correlation analysis showed that the incidence of arterial distortion positively correlated with age (r=0.404,help of three-dimensional reconstruction.The occurrence rate of artery distortion is increased with age and the iliac artery distortion occurrence is higher than that of the aorta artery.

Prunellae Spica is the dry ear of the labiaceae plant Prunella vulgaris， which is a traditional medicine and food plant with many functions. Prunellae Spica can clear liver-fire， improve eyesight， disperse knot detumescence. It owns hot and bitter flavors and cold property. It goes to the liver， gallbladder meridian， and is a kind of commonly-used antifebric. Prunellae Spica has been used in the treatment of mammary gland diseases since ancient times.The mammary abscess， mammary nodules， mammary carcinoma of traditional Chinese medicine all belong to breast disease， and the liver meridian is most closely related to these diseases. With the development of social life， breast disease has gradually become the most primary health problem for women. Modern pharmacological studies show that Prunellae Spica contains terpenoids， phenolic acids， flavonoids and other biological active components， which have anti-inflammatory， antibacterial， hormone regulation， anti-tumor and other effects. Prunellae Spica inhibits the p38 mitogen-activated protein kinase （p38 MAPK）/nuclear factor kappa-B （NF-κB） pathway to play an anti-mastitis role， interferes with the effects of estrogen receptors or regulates lipid levels to treat breast hyperplasia， and treats breast cancer through promoting the apoptosis of breast cancer cells， inhibiting the migration of breast cancer cells， regulating the division of breast cancer cells and other ways. While referring to the relevant literature， it was found that Prunellae Spica often exerted pharmacological effects through multi-channels and multi-target regulation， but most of the studies did not specify the specific target of its effect， which needs further study. In this review， the effects and mechanisms of Prunellae Spica in the treatment of various breast diseases were summarized， so as to provide a reference for further research on the wider clinical therapeutic effects of Prunella subtilis and its therapeutic effects on breast diseases.