To discuss the protective effect of aralosides (AS) on I/R-induced rat myocardial injury. The adult rat ventricular myocyte ischemia model was established through perfusion with sodium lactate perfusate and reperfusion with Ca(2+) -containing Tyrode's solution simulation. The cell contraction and ion concentration synchronization determination system was applied to detect the effect of AS on single I/R cell contraction and Ca2+ transients. According to the findings, AS could increase resting sarcomere length, contraction amplitude, ± dL/dt(max), calcium transient amplitude and speed of post-reperfusion myocardial cells (P < 0.05, P < 0.01), and decrease in time for achieving 90.0% of maximum relaxation, time for achieving peak value, resting calcium ratio, contraction period [Ca2+] i, time for achieving 50.0% of maximum relaxation and attenuation rate of intracellular calcium transient (P < 0.05, P < 0.01). Therefore, it is suggested that AS improved the post-reperfusion cell contraction and injury of calcium homeostasis.
Animals ; Aralia ; chemistry ; Biological Transport ; drug effects ; Calcium ; metabolism ; Drugs, Chinese Herbal ; administration & dosage ; Humans ; Male ; Muscle Contraction ; drug effects ; Myocardial Ischemia ; drug therapy ; metabolism ; physiopathology ; surgery ; Myocardial Reperfusion ; Myocytes, Cardiac ; drug effects ; physiology ; Rats ; Rats, Sprague-Dawley ; Saponins ; administration & dosage

AIM: To evaluate the efficacy and complications of intravitreal injection of triamcinolone acetonide ( TA ) for the treatment of macular edema caused by pre-retinal membrane of the macular.
METHODS: Totally 23 patients ( 24 eyes ) with macular edema caused by pre-retinal membrane of the macular were treated withintravitreal injection of 4mg TA. Best-corrected visual acuity ( BCVA ) , intraocular pressure ( IOP ) , slit - lamp examination, fundus fluorescein angiography ( FFA ) and optical coherence tomography (OCT) were performed before and after treatment. The SPSS 12. 0 software was used for statistical analysis.
RESULTS: After 10, 30, 90d of treatment of TA, as compared with before treatment, visual acuity improved significantly ( P<0. 05 ), and central macular thickness (CMT) was significantly thinner (P<0. 01). The average central macular thickness decreased from 522 ± 126μm before treatment to 264±115μm, 245±128μm, 286±131μm at 10, 30, 90d after treatment. Macular edema reduced. IOP increased in 7 eyes ( 29%) , one cataract case, no other complications associated with vitreous injection.
CONCLUSION: Intravitreal injection of TA in the treatment of macular edema caused by pre - retinal membrane of the macular is simple, safe and easy to operate. It can quickly reduce macular edema, and improve the visual acuity in the short term. Part of patients may recur after injection in the first half of the year.

Objective To investigate the effect of testosterone on mitotic orientation in rat prostate epithelial cells and the relative differential gene expression.Methods Twenty SPF male SD rats were divided into 2 groups at random and then subjected to castration.One group of rats was administrated with testosterone 3.7 mg daily for 30 days and the control group was only injected with olive oil.Microscopic analysis was performed using immunohistochemistry.Differential gene expression analysis was conducted by gene microarray and RT-PCR techniques.Results In the testosterone-adminis-trated group, there was a significant mitosis orientation parallel to the basement membrane.But in the control group, mito-sis orientation was oriented perpendicular to the basement membrane.Using the gene microarray and RT-PCR techniques, the cell proliferation genes such as Ran, Tgm4 and Wnt2 in Wnt signal pathway were up-regulated in the testosterone group.Conversely, suppressor cell proliferation genes such as Dkk3 and Fas were down-regulated.Conclusions Mitotic orientation of prostate epithelia cells is changed after testosterone administration.Wnt signal pathway and AR singling path-way also have an influence on the mitosis orientation and cell proliferation.

The high and continuing soaring incidence of diabetes may become a huge obstacle to China's development. The antidiabetic drug development is one way to solve the problem. Animal model is a powerful tool for drug development. This paper compares and analyzes the three kinds of animal models for antidiabetic drug development in replicating principle, methods and characteristic, then summarized the application in the research of traditional Chinese medicine. At the same time, the analysis of the market, application and clinical advantages of hypoglycemic medicine from traditional Chinese medicine, is given in this paper, based on the literature analysis. From the point of the clinic advantage embodiment and new drug development, this paper will provide advisory and assistance support for the anti-diabetic fighting with traditional Chinese medicine.
Animals ; China ; Diabetes Mellitus ; drug therapy ; Disease Models, Animal ; Drug Discovery ; Humans ; Hypoglycemic Agents ; Medicine, Chinese Traditional

With the advanced development of information technology, there is a huge impact on various industries for the arrival of big data. In the biomedical field, innovative genome sequencing technology enables low-cost, high-throughput, and high-speed to become a reality, which leads to an explosive growth in data and also appeared in an urgent need to process those massive biological information. High performance computing (HPC) along with effective methods is one of the best ways to deal with the problem of big data in biomedical field which could serve the biomedical development best. We discussed the issues faced in biomedical big data processing and concluded that the bioinformatics is an indispensable component of biomedical technologies.
Biomedical Research ; trends ; Computational Biology ; Computing Methodologies ; Humans

It is now thought that atherosclerosis,although due to enhanced lipid deposition,is mainly the result of a series inflammatory process.Total saponins of Aralia elata (Miq)Seem(TASAES)from the Chinese traditional herb Longya Araliachinensis L.,a folk medicine used for treating various diseases, increasing energy and improving the body′s ability to prevent hypoxia in Asian countries has attracted widespread attention. However, the ability of TASAES on inflammation-triggered vascular endothelial cell injury, a key early event in the pathogenesis of atherosclerosis, and its potential mechanisms of this protection have never been demonstrated. The present study determined the anti-inflammatory and anti-apoptoticactivities and protective mechanisms of the total aralosides of Araliaelata(Miq)Seem (TASAES) ameliorate tumor necrosis factor-α (TNF-α)-induced human umbilical vein endothelial cells (HUVECs) injury. Our results indicate that TASAES pretreatment provided cytoprotective effects by suppressing TNF-α-induced HUVECs apoptosis, mitochondrial membrane depolarization, caspase-3 activation, and modulation of inflammatory factors (IL-6, MCP-1 and VCAM-1), meanwhile inhibiting NF- κB transcription. Furthermore, the effect was correlated with the activation of the PI3K/Akt signal pathway. Blocking Akt activation with the PI3K inhibitor LY294002 effectively reversed the protective effect of TASAES against TNF-α-induced cell apoptosis.Moreover,the PI3K inhibitor partially blocked the effects of TASAES on the increasing of Bcl-2 and Bcl-xl protein expression,and inactivation of Bax protein expression. In conclusion, the results showed that TASAES decreased the inflammation and apoptosis of HUVECs caused by TNF-α treatment,and PI3K played a crucial role in enhancing cell sur-vival during this process.

Reperfusion is the most effective treatment for acute myocardial infarction, markedly reducing mortality and morbidity. Reperfusion however induces necrotic and apoptotic damages to cardiomyocytes, that were viable prior to reperfusion, a process called myocardial ischemia/reperfusion injury(MI/RI). Over the past 30 years, hundreds of experimental interventions (both pharmacologic and nonpharmacologic) have been reported to protect the ischemic myocardium in experimental animals; however, with the exception of early reperfusion, none has been translated into clinical practice. The population-based survey assessed men have about twice the total incidence of morbidity and mortality of women, and the sex gap in morbidity tends to diminish after age 45 years. So hormone replacement therapy (HRT) is given to treat the MI/RI, and lots of studies shows that the side effect is greater for estrogen, compared with phyestrogen. In this article, we review the important pathogenesis of myocardial ischemia reperfusion injury, the prevention and limitations of HRT. And we highlight the mechanism of phyestrogens treatment the MI/RI in experiment. The aim is to provide the theoretically new way of develop the safe and effective products for the researchers.
Animals ; Humans ; Myocardial Ischemia ; drug therapy ; Myocardial Reperfusion Injury ; drug therapy ; Phytoestrogens ; administration & dosage ; Plant Extracts ; administration & dosage

Objective To elucidate the immunologic mechanism and clinical effect of high intensity focused ultrasound (HIFU) combined with dendritic cell and cytokine induced killer cell (DC-CIK) immunotherapy on patients with pancreatic cancer.Methods Seventy-two pancreatic cancer patients were divided randomly into 2 equal groups,one treated with HIFU only the other treated with HIFU and DC-CIK immunotherapy.Ultrasound imaging and a variety of immunological indexes were recorded before and after treatment and the clinical effects in the two groups were compared.Moreover,autogenous tumor cells were isolated from the combination therapy group and the killing activity of DC-CIK which loaded tumor antigen processed by HIFU on autogenous tumor cells was observed.Results Tumor antigen processed by HIFU can improve the killing activity of DC-CIK on autogenous tumor cells.After treatment,the immunological indexes,of all patients were better than before treatment.(58.26 ± 17.97 versus 52.15 ± 14.22 pg/ml with IL-12 22.14 ± 6.39 versus 17.36 ± 5.73 ng/ml with HSP70 and 0.94 ± O.34 versus 1.32 ± O.61 ng/ml with TGF-β,P ＜ 0.05 ) ; The combination group was significantly better than the HIFU group with regard to the average scores of quality of life (75.89 ± 19.65 versus 67.22 ± 16.34,P＜0.05),pain (3.15 ±0.82 versus 3.59 ± 1.04,P ＜0.05),tumor markers (107.55 ±27.58 versus 123.63 ±34.12 U/ml) and survival time (18.92±6.47 versus 13.36 ±5.78 mos).Conclusion HIFU can improve the immunologic status and anti-tumor response in patients with pancreatic cancer.HIFU combined with DC-CIK has good synergistic therapeutic effect for treating pancreatic cancer.

Objective To investigate the mechanism and significance of low concentration nitric oxide (NO) inhalation in the treatment of pulmonary thromboembelism in swine. Method The pulmonary thromboem-bolism(PTE) model was made in 15 healthy infantile swines which were subsequently assigned to either control group (n = 8) or NO group (n = 7). Swines of the control group were not treated with any medicine, while 10 ppm of NO was administered by continuous inhalation for 2 hours to swines of NO group. Volume of physiological dead space (VDphy), volume of alveolar dead space (VDalv), intrapulmonary shunt (Qs/Qt), mean pulmonary arterial pressure (PAP), systolic blood pressure (SBP), heart rate (HR), cardiac output (CO), arterial blood pH (pH), arterial partial pressure of carbon dioxide (PaCO2) and arterial partial pressure of oxygen (PaO2) were measured 30 min before and 0 min, 30 min, 60 min, 120 min and 180 min after establishment of VIE. Results The post-FIE VDphy, VDalv, Qs/Qt and PAP in both groups increased markedly after PTE compared with the cor-responding pre-PTE measurements (P < 0.01). Post-FIE PaO2 of both groups decreased significandy (P <0.05 and P <0.01), while significance difference was found between pre- and post-PTE HR, SBP, CO, pH or PaCO2 in neither groups (P > 0.05). Both post-PTE PAP and VDalv in NO group were markedly lower(P <0.05 and P <0.01) and beth PaCO2 and PaO2 were much higher than those of the control group (P <0.05). No signi-fieant difference were found in other measurements between two groups. Conclusions Pulmonary arterial pressure may be lowered, alveoli dead space may be reduced and PaCO2 increased by low concentration NO inhalation for the treatment of PIE without decline in haemodynamic status.

Objective To investigate the mechanism and significance of low density nitric oxide (NO) in-halation combined with urokinase (UK) in treatment of pulmonary thromboembolism in swine. Method PIE model was estabhshed in 12 healthy infant swines, which were subsequently assigned to UK group or UK+NO ter establishment of the PIE model;in the UK+NO group, swines received continuous NO inhalation of 10 ppm NO for two hours in addition to administration of UK no done in the UK+NO group. Volume of physiological dead space (VDphy), volume of alveolar dead space (VDalv), intrapoulmonary shunt (Qs/Qt), mean ptdmonary arteri-al pressure (PAP), systolic blood pressure (SBP), heart rote (HR), cardiac output (CO), arterial blood pH val-ue, arterial partial pressure of carbon dioxide (PaCO2) and arterial partial pressure of oxygen (PaO2) were mea-sured at 30 min before and 0 min, 30 min, 60 rain, 120 min and 180min after establishment of pulmonary em-bolism.All date were analyzed by ANOVA (SNK-q test),and P<0.05 was considered as significantly differet. Results After PE, VDphy, VDalv, Qs/Qt and PAP of both groups increased markedly compared with the pre-PE values (P<0.01), but the post-PE PAP showed a tendency of decline as time passed. Post-PE PaO2 of both groups decreased significantly (P<0.05 and P<0.01). There were no significant differences in HR, SBP, CO, pH or PaCO2 between pre-PE and post-PE (P>0.05). Both pre- and Post-PE PAP of UK+NO group were markedly less than those of the UK group (P<0.05 and P<0.01). No significant difference was found in other measurements between the two groups. Conclusions UK combined with low density NO inhalation may lower pul-monary arterial pressure promptly to alleviate PIE without distur bance in hemodynamics or gas exchange status and without pulmonary raterial pressure rebound.