The mechanisms underlying early neurological deterioration (END) after ischemic stroke are not clear.There are no reliable predictive factors and effective preventive measures for END.The glutamatemediated excitotoxicity plays a very important role in the cascade reaction of ischemic events.High level of glutamate in plasma is one of the important predictors for END.Studies have shown that the polymorphism in the promoter of the excitatory amino acid transporter-2 gene is a potential cause for individual susceptibility to END.Some therapeutic strategies of interrupting the glutamatergic pathways may be as the strategies of intervention END.

The blood-brain barrier (BBB) exerts its central nervous system (CNS) protective function as it hinders the delivery of diagnostic and therapeutic agents to the brain. With the development of nanotechnology during the last thirty years, the nanocarriers for delivering drugs make it possible to transport drugs across the BBB. The brain-targeted drug delivery system usually consists of two parts: nanocarriers and brain-targeted strategies. In this review, several kinds of nanocarriers are introduced for brain-targeted drug delivery. We focus on several possible strategies for brain-targeting and comment on their advantages and disadvantages in application.

Background and purpose: Mouse osteosarcoma model was widely used in osteogenic malignant tumor research, and it was helpful for studying the invasion and metastasis of the tumor cells when it was well marked in vivo. The purpose of this study was to establish mouse sarcoma cell lines (S180) that were infected with enhanced green fluorescent protein(EGFP). Methods: EGFP-S180 expressing strong EGFP fluorescence was acquired by electroblot, and supplemented with G418 (800 mg/mL), c-Myc was detected by laser scanning confocal microscopy. Meanwhile, the cancer-bearing model was established subcutaneously within the abdominal cavity. Results: EGFP-S 180 cells were cloned. There was no significantly difference between c-Myc expressions in S180 cells and those in EGFP-S180 cells (P>0.05), and between the cancer-bearing time subcutaneously and the time within abdominal cavity (P>0.05). Conclusion: According to in vitro and in vivo assay, it showed that EGFP-expressing S180 cells could be used for studying further the tumor biological behavior with fluorescence technology.

Acupuncture Points ; Acupuncture Therapy ; Aged ; Anterior Compartment Syndrome ; therapy ; Humans ; Male ; Tibia ; injuries

Objective To explore the efficacy of ligustrazine combined with chemotherapy in patients with relapsed or refractory NHL and the relationships with P-gp expression. Methods 60 Patients were randomized into reversal agent group (ligustrazine + chemotherapy) and control group (chemotherapy) and the outcome was analysed. P- gp expression was analysed by flow cytometry. Subgroup analysis was conducted a ccording to P-gp expression. Results 56 patients could be evaluated. Progression -free survival (PFS) showed no statistical diference in two groups ( P = 0.065 1 ) ; reversal agent group had a higher overall response rate (ORR) than control group(P=0. 048).Subgroup analysis showed 41 patients had P-gp( +). The complete remission rate and complete remission uncertain rate of patients with P-gp( + ) in reversal agent group and control group were 33. 33% and 8. 70% , respectively, reversal agent group had a significant advantage ( P = 0. 048). Patients with P-gp( + ) in reversal agent group had a higher ORR than control group (61. 11% vs 26. 09% ,P =0.024). Kaplan-Meier survival curve and Log-rank test showed patients with P-gp( + ) in reversal agent group had longer PFS than control group (P =0.046 4). Blood pressure in a small number of patients received ligustrazine therapy decreased,and mitigated after reducing the dose. Conclusion Ligustrazine combined with chemotherapy can elevate response rate,prolong PFS with manageable toxicity and correlate to P-gp expression in relapsed or refractory NHL

The taxol s effect of inducing apoptosis is mainly related to its ability to promote tubulin polymerization and prevent tubulin chain depolarization. Drug resistance is the main restriction factor for clinical usage of taxol. Some basic and clinical studies support that poor response to taxol and poor prognosis are related to overexpression of β tubulin Ⅲ.

Objective To study the changes of ICAM-1 expression in transplanted lung at the early stage after rat pulmonary transplantation.Methods The expression level of ICAM-1 protein and its mRNA in rat transplanted lung after 4 h of ventilation and reperfussion were detected by using immunohisto chemical method(SABC method)and semiquantitative reverse transcriptase polymerase reaction method in the experimental group(n=6).When donor lungs had been flushed with low potassium solution(LPDS) and preserved in 4.C LPDS for 12 h,left orthotopic pulmonary transplantation was performed.In control group (n=6), left pulmonary artery,pulmonary vein and bronchi were fully freed to be naked.Immunohistochemical test results were recorded in negative(-),suspicion(±),faint positive(+),positive(++)and intensive positive(+++).PCR products were separated by agrose gels and the density of the bands were determined by density scanning.Results The stained color of alveolar epithelial cells and pulmonary vascular endothdial cells in the transplanted lung was significantly more intensive in experimental group than in control group(P＜0.01) and the relative density values(ICAM-1/βactin)were also significandy higher in experimental group(0.837±0.044) than in control group (0.442±0.037),P＜0.01. Conclusions ICAM-1 expression in the transplanted lung was up-regulated in the early stage after pulmonary transplantation,which was related with the enhancement of ICAM-1 mRNA.

Epidemiologic evidence suggests that diabetes mellitus appears to be negatively associated with abdominal aortic aneurysm formation. Diabetes mellitus may affect the physiological characteristics of the aorta and reduce the prevalence, incidence and expansion rate of abdominal aortic aneurysm. But the impact of diabetes mellitus on the rupture, operative complication and clinical outcome of abdominal aortic aneurysm is unclear. Randomized controlled trials are needed before conclusions can be drawn on the link between development and expansion of abdominal aortic aneurysm and medicines for diabetes. This review aims to analyze updated evidence of the association between diabetes mellitus and abdominal aortic aneurysm.

Objective To research the binding specificity of new recombination toxin LHRH-PE40 and LHRH receptor on the surface of human colon carcinoma cell line Lovo and the mechanism of anti-proliferation,and determine the apoptosis.Methods Lovo cells were analysed by LHRH-PE40 marked with()~(125)Ⅰ;the cytocidal effect of the anti-tumor was evaluated by MTT assay,and the apoptotic rate was analysed by flow cytometry.Results Lovo cells had the binding of aglucone and receptor.Half lethal dose of human colon carcinoma cells Lovo with LHRH-PE40 was 0.24 mg?L~(-1).The apoptotic rate was increased when the LHRH-PE40 concentration was ranged from 0.1 to 10 mg?L~(-1)(P