The studies on glycosaminogiycans (GAG) from animals are carrying out extensively in the fields of biology.biochemistry and medicine. The methodology of GAG researches has been developed rapidly at present. The researches of GAG have just begun in China. Synthesizing a large number of references,this paper gives a brief introduction on the methods of extraction isolation and determination for GAG. And the latest methods and developing tendency are summarized as well.

Objective To investigate the protection and mechanism of procyanidins (PC) against H2O2 induced oxidative damage of human trabecular meshwork cells (HTMC) in order to provide an experimental foundation for glaucoma clinical treatment.Methods HTMC were cultured and then divided randomly into 5 groups.As untreated group:Normal cultured HTMC;Control group:Normal cultured HTMC + H2O2 (500 μmol · L-1 for 1 hour);Treated group:Normal cultured HTMC + H2O2 (500 μmol ·L-1 for 1 hour) + PC (PC fmal concentrations were 0.02 g · L-1,0.05 g · L-1,0.10 g· L-1).Real-time fluorescence quantitative polymerase chain reaction (PCR) was used to investigate the expression of mitochondrial complex Ⅰ mRNA.Results Compared with untreated group (1.000 0 ± 0.000 0),the differences of mitochondrial complexⅠ mRNA expression in 0.02 g · L-1 PC (0.401 3 ±0.010 3),0.05 g · L-1 PC (0.791 5 ± 0.008 5) groups were statistically significant (all P ＜ 0.01),but the 0.10 g ·L-1 PC group (1.043 0 ± 0.062 2) had no significant differences (P ＞ 0.05).The differences between PC treated groups and control group were statistically significant (P ＜0.01),which showed HTMC treated with PC could increase the expression of mitochondrial complex Ⅰ mRNA.The differences in each PC treated groups were statistically significant (P ＜ 0.01),which showed the expression of mitochondrial complex Ⅰ mRNA were increased along with the concentration of PC gradually increased.Conclusion Exogenetic PC can increase the expression of mitochondrial complex Ⅰ mRNA in the oxidative damaged HTMC,and in a certain range of concentration,the protective effects of PC have the positive relationship of dose-effect,which suggest that PC may be a good candidate for further study of the clinical treatment of glaucoma.

Fraction F3-3-3 of glycosaminoglycan was isolated from the leftover bits of Bay scallop Argopecten irradiaus . Infrared spectra of F3-3-3 was similar to that of heparin. Agarose gel electrophoresis of this fraction was performed in the system of barbital buffer (0. 06 mol/L,pH 8. 6). It was found that F3-3-3 showed single band in the electrophoresis. Compared with the agarose gel electrophoresis of standard glycosaminoglycan, such as heparin, hyaluronic acid and chondroitin 6-sulfate, it indicated that the relative migration rate of the fraction was close to that of heparin.

The glycosaminoglycan (GAG), isolated from Bay scallop Argopectenirradians, contains neutral monosaccharides besides hexosamines and hexosuronic acids. The monosaccharides obtained by alcoholysis with HCI-methylalcohol from the sample of GAG was trimethylsilanized with hexamethyldisilan and chlortrimethylsilan (HMDS ' TMCS = 2 : 1). And the trimethylsilyl derivatives of monosaccharides was determined by gas chro-matography. Compared the gas chromatography of the sample with that of standard monosaccharides, it was found that the GAG of the Bay scallop contains five neutral monosaccharides, viz glucose, galactose, xylose, fucose and rhamnose.

Glycoprotein of Chlamys ( Azumapecten ) farreril ( GCFI) was prepared from the skirt of scallop Chlamys (Azumapecten)farreri by extraction with hot water,isolation and purification with column chromatography "on DEAE-cellulose and Sephadex G-100 successively. GCFI was hydrolyzes with enzymes to obtain glycoprotein of Chlamys (Azumapecten)farreri IKGCFID-The chemical composition and antitumor activity of GCFI and GCFII were studied. The result showed that GCFI and GCFII were two glycoproteins in which the composition and content of protein and sugar were different. They could obviously inhibit Sarcoma 180 cells proliferation of mice with the inhibition rate of 47. 29% and 46. 97%,respectively. Pharmacological test indicated that antitumor activity of GCFI and GCFII were associated with the structure of sugar in the molecules.

The quality of traditional Chinese medicines (TCMs) has been mainly evaluated based on chemical ingredients, yet recently more attentions have been paid on biological ingredients, especially for pill-based preparations. It is a key approach to establish a fast, accurate and systematic method of biological ingredient analysis for realization of modernization, industrialization and internationalization of TCMs. The biological ingredient analysis of TCM preparations could be abstracted as the identification of multiple species from a biological mixture. The metagenomic approach based on high-throughput-sequencing (HTS) and big-data-mining has been considered as one of the most effective methods for multiple species analysis of a biological mixture, which would also be helpful for the analysis of biological ingredients in TCMs. Simultaneous identification of diverse species, including the prescribed species, adulterants, toxic species, protected species and even the biological impurities introduced through production process, could be achieved by selecting appropriate DNA biomarkers, as well as applying large-scale sequence comparison and data mining. By this approach, it is prospective to offer an evaluation basis for the effectiveness, safety and legality of TCM preparations.

Objective To study butylphthalide on acute cerebral infarction with leukoaraiosis patients cognitive function. Methods 80 patients with acute cerebral infarction combined with leukoaraiosis in Yuncheng Central Hospital from June 2014 to June 2015 were selected, all patients had cognitive dysfunction, and randomly divided into study group and control group with 40 cases in each group. The two groups were given conventional treatment of cerebral infarction, the study group was given the butylphthalide soft capsules two tablets, three times once day orally for three months, we used MMSE and MoCA scale to assess the cognitive status of the patients in the two groups at four, eight, and 12 weeks after treatment. The changes of liver function during treatment were analyzed. Results In the treatment, the two groups of patients with MMSE were improved, in four weeks of treatment, the MMSE scores of the study group was higher than the control group, but there was no significant difference between the two groups, eight weeks and 12 weeks, the MMSE scores of the study group was significantly higher than the control group, and the difference between the two groups was statistically significant (P<0.05), the MOCA score of patients in the study group gradually become normal, and significantly higher than the control group, after treatment for four weeks, eight weeks and 12 weeks the difference was statistically significant (P<0.05), the study group patients first had abnormal liver function in the treatment, recovered after stopping the medication. Conclusion Butylphthalide can improve the cognitive function of patients with acute cerebral infarction combined with leukoaraiosis, the increase of transaminase caused by treatment has no significant effect on clinical medication, which is worthy of further popularization and application.

Objective To investigate the expression of E26 transformation-specific-1 (E26ts-1),matrix metalloproteinase-1 (MMP-1) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) in choroidal melanoma and the correlation with the tumor′s infiltration and metastasis. Methods Immunohistochemistry was used to detect the expression of E26ts-1,MMP-1and TIMP-1 in 78 cases of choroidal melanoma who were divided into shuttle-cells,paraepithelial-cells and mixed-cells type according to the configuration of tumor cells.The patients were followed up and their average existing time was calculated.The results were statistically computed with statistic SPSS 10.0 package. Results In the 78 cases,shuttle-cells type was found in 21,paraepithelial-cells type in 34,and mixed-cells type in 23. Expression of TIMP-1was low in uveal melanoma,while expression of E26ts-1 and MMP-1 was obviously found in the three types of choroidal melanoma;the sequence of expression intensity was shuttle-cells,mixed-cells and paraepithelial-cells type.Among 37 cases who had been followed up,the shuttle-cells type was in 18 with the average existing time of (78.33?24.69) months,the mixed-cells type was in 10 with the average existing time of (61.44?20.46) months,and the paraepithelial-cells type was in 9 with the average existing time of (36.76?12.19) months.The existing time was negative correlated with the intensity of expresion of E26ts-1 and MMP-1. Conclusion The high expression of E26ts-1 and MMP-1and low expression of TIMP-1may relate to the choroidal melanoma′s infiltration and metastasis.

Marine traditional Chinese medicine (MTCM) is an important part of Chinese medicine (CM),there are some differences in understanding of the current literature and the extension of the connotation of marine medicine,which leads to the definition dispute of MTCM,hindering clinical application and further development of MTCM.In this study,we explored the concept of MTCM in literature,discussed the attributes of ocean marine CM,summed up the differences between the land CM and MTCM over variety characteristics,effect of drug composition characteristics and biological activity characteristics,and discussed the connotation and extension of MTCM from three aspects of theoretical basis and the effect and source of the drug,leading to the formation of the narrow and broad concept of MTCM.The five kinds of disputes in the definition of MTCM were discriminated according to the concept and connotation,which provided a theoretical basis for the definition and the research of MTCM.Moreover,we also defined the English translation and its abbreviation as Marine Traditional Chinese Medicine (MTCM).

Experience mode of marine medicine (EMMM) is the summary of experiences on marine medicine con-cluded by ancient doctors for thousands of years. The mining of EMMM is very important for the clinic application and development of marine medicine. However, these experiences are very difficult to discover for they are all scat-tered in the large number of ancient documents. We proposed that the EMMM can be built by the procedure of in-formation of ancient documents, text-mining of ancient documents, and associate network of informatics unit of ma-rine medicine by non-interactive literature-based knowledge discovery methods, and expert evaluation at the end, so as to provide database for the clinic application and further development of marine medicine.