Silence information regulator factor 1 (Sirt1) has been demonstrated to be a multi-functional regulator act as a deacetylase.It regulates in critical pathophysiologic pathways,including gene transcription,energy metabolism and senescence.It has been shown that Sirtl regulates the growth and development of myocardial tissue and the formation of blood vessels,also modulates the energy metabolism and oxidative stress of cardiovascular system and so forth.The transcriptional regulator may play a potential role in clinical application and research of cardiovascular diseases.

Objective To clone 3-dehydroquinate synthase cDNA from Echinacea angustifolia and investigate its tissue expression characteristics in various tissues.Methods By using homology cloning and RACE-PCR,the cDNA encoding 3-dehydroquinate synthase was amplified with cDNA library of cultured plantlets as the template.The specificity expression profile in different tissues including roots,stems, leaves,and flowers of E.angustifolia was investigated by semi-quantitative RT-PCR as well.Results The full length cDNA of 3-dehydroquinate synthase(named as EanaroB) had 1 424 bp with an open reading frame encoding 442 amino acids of protein and its EanaroB was around 80%homologous with the sequences of 3-dehydroquinate synthase from other plants.The sequence was reported to the GeneBank and coded as EU293857.The results of semi-quantitative RT-PCR indicated that the expression of EanaroB was detected in different tissues,while only the expression in leaves and flowers reached to a high level. Conclusion The cDNA encoding EU293857 from E.angustifolia is cloned and reported.This work underlays the first step for exploring the pathway of caffeic acid derivatives biosynthesis and improving the content of caffeic acid derivatives including phenylethanoid glycosides.

Objective:To investigate the methyl-CpG-binding protein 2 (MeCP2) expression in specimens of pancreas cancer tumor and para-cancerous tissues and its prognostic value.Methods:The tissue microarray and immunohistochemistry were used to examine the MeCP2 expression in 59 cases of pancreatic cancer tumor tissues and 53 adjacent normal tissues. The correlation between the MeCP2 expression and clinicopathological characteristics of pancreas cancer patients was analyzed. Furthermore, the survival curve was drawn by Kaplan-Meier method and the Cox regression hazards model was used to study the prognostic value of MeCP2 expression in pancreas cancer.Results:The MeCP2 positive expression rate in 59 pancreas cancer tumor tissues was 47.5%, which was 67.9% in 53 adjacent tissues. The MeCP2 positive expression rate in adjacent tissues was obviously higher than that in pancreatic cancer tissues, and the difference was statistically significant ( P<0.05). The MeCP2 positive expression was significantly associated with pathological grade and lymph node metastasis(both P<0.05). The overall survival in patients positive for the MeCP2 expression was longer than that in those with negative MeCP2 expression( P<0.05). Cox multivariate analysis demonstrated that the level of MeCP2 expression was an independent predictor for prognosis in patients with pancreas cancer. Conclusions:MeCP2 is obviously positively expressed in para-cancerous tissues, but was lowly expressed in pancreatic cancer, indicating that MeCP2 detection can help to evaluate the prognosis of pancreatic cancer patients.

Objective To investigate the effects of aerobic exercise training on oxidative stress and ultrastructure of pancreas tissue in diabetic rats and the mechanism of protective effects of aerobic exercise training on pancreatic mitochondria in diabetic rats.Methods Thirty Sprague-Dawley rats were randomly divided into three groups:a normal control group,a diabetic model group and an exercise diabetic group,with 10 rats in each group.Type 2 diabetic rat models were established by intra-abdominal injection of streptozotocin (STZ).The success rate of establishing diabetic rat models was 85.7％.The normal control group and diabetic model group were not given exercise training.Exercise group was trained with 8 weeks of swimming of medium strength,eg.60 min/time,5 d/week. After training for 8 weeks, the activities of superoxide dismutase(SOD), glutathion peroxidase (GPX),nitric oxide synthase (NOS) and the contents of malondialdehyde (MDA) and nitric oxide (NO) in pancreatic mitochondria were observed respectively.The ultrastructures of pancreas tissue in rats were observed under electron microscope.Results After swimming training for 8 weeks,the activities of SOD and GPx in pancreatic mitochondria in exercise diabetic group elevated more obviously than those in diabetic model group ( P ＜ 0.05 ),while the activity of NOS and the contents of MDA and NO reduced obviously (P ＜ 0.05 ).Compared with diabetic model group,the ultrastructures of pancreas tissue in exercise diabetic group improved,and the histomorphology was similar to normal control group.Conclusions Aerobic exercise training can provide protective effects on pancreas in diabetic rats,and can enhance antioxidation ability to eliminate free radicals,improve the ultrastructures of pancreas tissue.

Objective To Study the correlation factors for diabetes pathogenesis of Uygur Nationality in Urumuqi.Methods A cluster sampling was done in 1002 Uygur people aged 25 to 74 years in a part of working units and living area in Urumuqi.All the people received 75g oral glucose tolerance test.Waist and hip circumference,blood pressure,height and body weight were measured.A questionnaire involved in the family history,diet,physical activity and the expenditure on diet was taken.Results(1)63% of the people was male,while 37% was female in our study.The constituent ratio of age was as following:25y～,23.08%;35y～,36.90%;45y～,19.64%;55y～,14.86%and 65y～,5.51%.(2)The prevalence of DM in the study was 14.69%,the abnormality of glucose metabolism was 29.89%.(3)The correlation factors of diabetes were family history of diabetes(OR 0.59),age(OR 0.83),high blood pressure(OR 0.912),waist-to-hip ratio(OR 3.851)and financial spending on diet(OR 5.279) in logistic regression analysis.Conclusions Diabetes-correlated factors are high financial spending on food especially meat products and little cellulose intake,high waist-to-hip ratio.To decrease the prevalence rate of diabetes in Uygur nationality,it is most important to change the diet habit and decrease intra-abdominal fat deposition

Objective To study the significance of acute pancreatitis AP complications by acid-base distur-bance. Methods The arterial blood gas, serum electrolytes parameter and clinical data of 85 patients were analyzed.Results Acid-base disturbance of different types commonly existed in the early stage of AP patients. There are sig-nificant statistical differences in the indices of PaO2, PaCO2, SaO2 between group MAP and group SAP( P < 0.05 or P < 0.01 ). Conclusion Acid-base disturbance are very common in the AP patients and this-will make the condition worse,they should be treated promptly.

Since 2015, US government announced the Precision Medicine Initiative, the concept of“precision medicine” is spreading rapidly, which has seemingly become the mainstream of future medicine.Laboratory medicine based on personalized information brought by the development of precision medicine will be an entirely new area, however its complexity is far beyond the current knowledge and laboratory medical scientists are encouraged to be actively involved in this emerging field.Opportunities and challenges may coexist, which mainly include: screening and evaluation of circulating biomarkers, selection and standardization of appropriate molecular diagnostic techniques, acquisition of high quality biological specimens and establishment of sample library, and comprehensive interpretation of the results in order to achieve and improve individualized precise prevention, diagnosis, and treatment for specific diseases and patients.

Objective To review the recent studies on the suppressing function of breast cancer metastasis suppressor 1 (BRMS1) in breast cancer metastasis. Methods The recent literatures on the mechanisms of BRMS1 in the breast cancer that were published in and abroad were reviewed and summarized. Results BRMS1, similar to the other anti-metastasis genes, only suppresses the metastasis of breast cancer cells but has nothing to do with the growth of tumor. BRMS1 could suppress metastasis of tumor cells by reestablishing both the homospecific and the heterospecific gap junctional intercellular comminications (GJIC) and by altering the expressions of relevant metastasis genes in the breast cancer. Conclusion Further studies on BRMS1 may be helpful to understand the metastasis of breast cancer, which may provide a new way for the diagnosis and treatment of breast cancer.

In the 58th American Society of Hematology Annual Meeting, some clinical results on B-cell lymphoma were reported. This review will focus on the recent progress of diffuse large B-cell lymphoma and mantle cell lymphoma in this annual meeting.