AIM: To investigate the angiogenesis in the process of sarcoma 180 (S_(180)) tumor transplantation and changes of regulator factors, and explore the possible mechanism. METHODS: The S_(180) transplanted tumor in the Km mouse was used to detect the tumor angiogenesis by immunohistochemical examination of FⅧ. The levels of VEGF (V) and endostatin (E) in serum and the homogenate of tumor tissue were measured by ELISA and EIA, and the correlation between tumor weight and microvessel count (MVC) and morphology in tumor was also analyzed by multiple ANNOVA method. RESULTS: MVC, the relative count of total vessels and relative total vessel area increased with the development of transplanted S_ 180 . VEGF level in tumor tissue were higher at the 10th and 15th day than the 5th day after tumor transplantation. Endostatin in the tumor tissue and serum both reached the highest level at the 15th day, V/E ratio did not changed in this process. Furthermore, MVC, average vessel area and relative total area had a significant correlation with tumor weight. CONCLUSION: MVC increases in the development of S_(180) transplantation tumor and is related with the tumor weight; the positive regulator of angiogenesis in the tumor tissue is up-regulated during tumor growth, and the regulators in the tumor tissue maintains a relative balance.

After the significance to asses the value of information resources in hospital library was elaborated, the methods to assess the value of information resources in hospital library were constructed by contingent valuation and investment return analysis in combination with the practical service in hospital library according to the analysis of the economic value assessment in domestic and foreign public libraries and academic libraries.

The languages, types and number of digital resources in 8 domestic medical and pharmaceutical college and university libraries were analyzed , which showed that although certain successes have been achieved in devel-opment of digital resources in these libraries, there are some problems needing to be solved, such as weakness in new digital resources development , insufficient integration of free and open access resources , insufficient organiza-tion and revealing of resources .Suggestions were put forward for the solution of these problems , such as optimizing digital resource structure, developing characteristic digital resources, sufficient organizing and revealing digital re-sources.

Matrix metalloproteinases (MMPs) are a family of Zn~ 2+ -dependent endopeptidases targeting extracellular matrix (ECM) compounds as well as a number of other proteins. Their proteolytic activity acts as an effector mechanism of tissue remodeling in physiologic and pathologic conditions, and as modulator of inflammation. Recently, it has been reported that MMPs play an important role in nervous diseases including cerebral ischemia, Alzheimers disease,multiple sclerosis and Parkinson′s disease.

Peroxisome prolifreator-activated receptors (PPARs) are ligand-activated nuclear transcription factors, members of nuclear hormone receptor superfamily. PPARs play critical roles in growth, proliferation and apoptosis of variety of cells. Recently, PPAR ligands have been reported to ameliorate neuronal damage in neurodegenerative diseases including Alzheim- ers disease, Parkinsons disease,cerebral ischemia and multiple sclerosis. PPAR agonists may have potential values in treatment of neurodegenerative diseases. In this paper, we reviewed recent findings on PPARs′ neuroprotective actions and their underlying mechanisms.

AIM: To investigate the changes of plasma glutathione peroxidase (GSH-PX) and catalase (CAT) activities in nude mice (NM) bearing human nasopharyngeal carcinoma (NPC) and observe the effect of naja naja atra venom (NNAV) on them. METHODS: Plasma GSH-PX and CAT activities in human NPC bearing NM treated ( i.p. ) by low, middle or high concentration NNAV solution (1 mg/L, 5 mg/L, 10 mg/L) were determined by colorimetry. RESULTS: Plasma CAT activity (16 450 U/L) in NM bearing tumor group decreased significantly in comparison with the control group (20 680 U/L)(P0.05). Treated by low, middle or high concentration NNAV solution, CAT activities of three NM bearing tumor groups (20 570 U/L, 23 090 U/L, 21 280 U/L ) were higher than that of the NM bearing tumor group without NNAV treatment (16 450 U/L) (P0.05). GSH-PX activities of the three groups (especially high concentration group) were higher than that of the group without NNAV treatment (P

Objective To investigate the effect of meridian exercises on blood glucose and clinical symptoms of community elderly type 2 diabetic patients.Methods Sixty elderly patients with type 2diabetes mellitus (T2DM) were selected from two communities from February to September in 2012.Thirty participants from one community received meridian excise-based group sport management (experiment group),the other 30 subjects from another community got meridian excise-based individual sport management (control group).Before and after the intervention,blood glucose and self-report symptoms were assessed.Results At baseline and after the intervention,there was statistically significant difference of postprandial blood glucose and self-symptom score between the two groups (t values were-5.954,-2.900,-4.214 and-3.798,respectively; all P＜0.05).After the intervention,experiment group showed statistically significant difference in self-assessment of symptom score from the control group (t=-5.484,P＜0.05).Conclusion Meridian exercises can efficiently improve diabetic patients' postprandial blood glucose and clinical symptons.

Aim To study the role and mechanism of opioid receptor on IL-1?-induced fever.Methods Rats were dealed with intracerebreventricular administration of naloxone and/or IL-1?.Changes in body temperature were measured.The content of cAMP and HSP70 expression in hypothalamus were detected.Results Naloxone can limit IL-1?-induced fever and decrease the content of cAMP and HSP70 expression in hypothalamus(P

Objective To observe the expression and mechanism of hypoxia-inducible factor-1α (HIF-1α) and p53 protein at the altitude of 5000 meter plateau hypoxia environment in rats,as well as the effect of Astragalus injection.Methods Sixty Sprague Dawley rats were randomly divided into the Astragalus injection intervention group and normal saline control group,30 rats in each group.Astragalus injection group rats were intraperitoneal injected of Astragalus injection (15 ml/kg) before 30 minutes into the plateau environment simulation cabin,normal saline group rats were intraperitoneal injected with the same volume of saline.30 minutes after injection,rats in each group were reared in the plateau experiment cabin which simulated altitude of 5000 m (oxygen partial pressure 11.3 kPa) for 2,6,8,12,24 hours,each time period of 6 rats.When get out,the rats were executed immediately and eyes were harvested.Retinal sections were studied by hematoxylin eosin stain,and immunohistochemical method for HIF-1α and p53 expression.Results For control rats,after 2 hours in the cabin,there was edema in retinal layers.HIF-1α and p53 were expressed mainly in the cytoplasm of retinal layers.When the periods in cabin extended,there was atrophy of retinal nerve fiber layer,swelling and degeneration of ganglion cells.The expression of HIF-1α and p53 was increased.Compared with the control group,the intervention group rat had similar but less severe retinal changes,and the expression of HIF-1α and p53 was significantly decreased (P ＜0.05).Conclusion Astragalus injection can reduce pathological retinal damage in rats at high altitude environment,and its mechanism may be associated with reduced HIF-1α,p53 expression.