Objective To establish a hydrogen peroxide-impaired model of rat cerebral microvascular endothelial cells in vitro, and observe the protective effect of serum containing Naoyian. Method Rat cerebral microvascular endothelial cells were treated with six concentrations of hydrogen peroxide at four time points. The optimum injury condition of hydrogen peroxide was determined by MTT chromatometry. Then the cultured cells pretreated with serum containing Naoyian and pyrrolidine dithiocarbamate(PDTC) were interfered with hydrogen peroxide in suitable concentration and time, and OD of the treated cells was measured by MTT chromatometry. Results The cultured cells were injured obviously by hydrogen peroxide in 0 125mmol/L for 30min. The OD of the cells pretreated with 5% serum containing Naoyian and 50?mol/L PDTC were significantly higher than that of the cells without pretreatment (P

p70 ribosomal protein S6 kinase (p70S6K), an important member of AGC family, is a kind of multifunctional Ser/Thr kinases, which plays an important role in mTOR signaling cascade. The p70 ribosomal protein S6 kinase is closely associated with diverse cellular processes such as protein synthesis, mRNA processing, glucose homeostasis, cell growth and apoptosis. Recent studies have highlighted the important role of S6K in cancer, which arose interests of scientific researchers for the design and discovery of anti-cancer agents. Herein, the mechanisms of S6K and available inhibitors are reviewed.
Antineoplastic Agents ; Humans ; Protein Kinase Inhibitors ; chemistry ; Ribosomal Protein S6 Kinases, 70-kDa ; antagonists & inhibitors ; metabolism ; Signal Transduction ; TOR Serine-Threonine Kinases

On the basis of the development of a new CE method for the analysis of α-lactalbumin (α-Lac), β-lactoglobulin A(β-LgA) and β-lactoglobulin B(β-LgB), different concentrations of acetic acid (HAc) and trichloroacetic acid (TCA) for the removal of proteins in raw milk, infant formula A and B, and yogurt were investigated.It was shown that TCA is better than HAc for eliminating of proteins in the above four samples.The proteins in 2 g of raw milk could be eliminated by 3 mL of 100 g/L TCA.0.5 g of infant formula A and B needs 5 mL of 10 g/L and 20 g/L TCA to remove the proteins, respectively.For 2 g of yogurt, 3 mL of 20 g/L TCA is enough.The present research may provide valuable information for protein-containing sample (such as raw milk, infant formula and yogurt) pretreatment.

Objective To investigate relationship between levels of follicle-sitimulating horomone receptor(FSHR) and ovarian response induced by gonadotropin hormone,and whether the FSHR expression is correlated with in vitro fertilization(IVF) outcome.Methods Granulose cells were collected from 43 women receiving IVF-embryo transplantation(IVF-ET).According to the number of oocyte,the women were divided into three groups: low response(15).The expression intensity of FSHR was measured by immunohistochemistry technique.The expression intensity of FSHR on the granular cell,the embryological and clinical outcomes were compared and analyzed. Results The expression of FSHR was significantly different in three groups with the highest in high response group(P0.05).The FSHR level was positively correlated either with the number of oocyte (r=0.719) or with the serum E2 levels(r=0.516,P0.05). Conclusion Ovarian response to gonadotropin hormone stimulation is correlated with the level of FSHR in the granulose cells.The development of follicles may be influenced by it.

Adolescent ; Adult ; Blood Donors ; Child ; Child, Preschool ; Female ; Gastrointestinal Diseases ; drug therapy ; etiology ; Graft vs Host Disease ; drug therapy ; etiology ; Hematopoietic Stem Cell Transplantation ; adverse effects ; Hormones ; administration & dosage ; therapeutic use ; Humans ; Male ; Middle Aged ; Transplantation, Homologous ; Young Adult

Objective To observe the sub-chronic effects of low doses of arsenic poisoning in rabbits exposed to different periods on some of the serum enzymes and biochemical indicators, and to provide the basis for screening of meaningful hematologic indicators for early diagnosis of arsenic poisoning. Methods Twelve adult rabbits,weighing 2.0 - 3.5 kg, were randomly divided into four groups, 3 in each group, and they were fed with drinking water containing sodium arsenite 0(control),0.01,0.05,0.25 mg/L, respectively. Serum alanine aminotransferase (ALT), aspartate amino transferase (AST), alkaline phosphatase (ALP), γ-glutamyl transacylase (y-GT), total protein(TP), albumin(ALB), globulin(GLP), and ALB/GLP of rabbit were measured by SYSMEX-180 automated biochemistry analyzer after 8 weeks and 12 weeks exposure. Results The results showed that ALT in 0.05 mg/Lgroup of 12 week[(60.00 ± 4.14)U/L]increased significantly compared with the control[(41.50 ± 2.12)U/L, P ＜0.05];AST in 0.25 mg/L group of 8 week and 12 week[(46.50 ± 3.21 ), (52.33 ± 3.81 )U/L]increased significantly compared with the control[(21.33 ± 3.53), (29.50 ± 3.23 )U/L, all P ＜ 0.05];ALP in 0.05 mg/L and 0.25 mg/L group of 12 week [(78.68 ± 4.85 ), ( 103.00 ± 7.83 ) U / L]increased significantly compared with the control [(45.50 ± 5.50)U/L, all P ＜ 0.05];γ-GT in 0.05 mg/L group of 12 week[(19.33 ± 7.50)U/L]increased significantly compared with the contro1[(8.50 ± 3.53)U/L, P＜ 0.05]. TP, ALB, GLP, ALB/GLP of different groups of 8 week and 12 week were not significantly different statistically(F= 0.77,0.02,0.16,3.14 and 0.51,0.29,0.41,0.52, all P ＞ 0.05). Conclusions Zero point zero five mg/L and higher doses of sub-chronic arsenic exposure has some major damage to the liver. Compared with other serum enzymes and the biochemical indexes, serum AST is a early sensitive indicator of liver injury of the arsenic poisoning.

Objective To find out the cut-off value of rose bengal plate agglutination test(RBPT) in rapid diagnosis of brucellosis.Methods From May to June 2009,398 people who came to the outpatient department of Inner Mongolia Center for Endemic Disease Control and Research were diagnosed brucellosis by RBPT and tube agglutination test (SAT).Tube agglutination test as a gold standard,rose bengal plate agglutination test,its authenticity and reliability were evaluated.Results Taking positive predictive value 100.0％ as the selection standard,the cut-off value of RBPT was ++ which could be used to diagnose brucellosis.The sensitivity was 83.3％; the specificity was 100.0％; the Youden index was 0.832; and the compliance rote was 89.9％.Conclusion The cut-off value ++ of RBPT to diagnosis brucellosis is worthy of clinical promotion.

Objective To observe the immunostaining of endothelin-1(ET-1) and von Willebrand factor(vWF) in pulmonary vascular of ventricular septal defect(VSD) with pulmonary hypertension(PH),and the possible roles of ET-1 and vWF in the development of PH and remodeling in pulmonary artery.Methods VSD with non-PH were choosed as control group,20 cases with VSD with PH were divided into Ⅰgroup and Ⅱgroup according to mean pulmonary artery pressure. The specimens from middle lobe of right lung was obtained and stained by immunohistochemical technique.The degree of immunoreaction was measured with light density.Results The light density of ET-1 and vWF in small pulmonary arteries had significant statistical difference between every group,and Ⅱgroup was higher than those of Ⅰgroup,but no difference in small pulmonary veins.In every group,the light density of ET-1 and vWF had significant difference between small pulmonary arteries and pulmonary veins.There were statistical correlation among mean pulmonary pressure,VSD/A,ET-1 and vWF.Conclusions ET-1 and vWF are concerned with the development of PH and mediate pulmonary vascular remodeling.The data of small pulmonary veins suggest that the main origin of ET-1 in pulmonary tissue is small pulmonary artery.

AIM: To evaluate the safety and efficacy of intravitreal bevacizumab ( avastin ) injection in patients with exudative age related macular degeneration ( AMD) .
METHODS: The records of patients treated with intravitreal injection of 1. 75mg bevacizumab for AMD were retrospectively reviewed. All patients were evaluated by complete ophthalmic examination, optical coherence tomography and fundus fluorescein and/or indocyanine green angiography. Observation was made on the best corrected visual acuity ( BCVA) , intraocular pressure, and the changes of lens, vitreous, central retinal thickness (CFT) and total macular volume (TMV), at 1d, 3d, 7d, 1mo and 6mo after the treatment and then compared with those of pre - operation. Repeated treatment with intravitreous bevacizumab occurred if there were signs of persistent or recurrent exudation. And all cases were followed up at least 6mo. An intravitreal injection of bevacizumab (1. 75mg) was given once every 6wk.
RESULTS:All 50 eyes of 48 patients with the average of 58±20. 46 years old were included. The mean baseline of BCVA and CFT were 0. 82±0. 53, and 364. 97±151. 83μm respectively. Although there was no significant decrease in mean CFT and TMV one week after the injection, the mean BCVA had significant improvement. At the last visit of 9. 7mo follow - up, BCVA, CRT and TMV showed significant improvements over baseline values. BCVA was improved by at least two lines in 32 eyes (64%),remained stabilization in 18 eyes (36%) at the last visit. A total of 98 injections were performed and the average number of injections was 1. 98 for each eye in the group. About 50%of re - injections gained at least two lines of vision improvement one week postoperatively. There were no serious adverse events during the treatment.
CONCLUSION: Intravitreal bevacizumab ( avastin ) injection for managing CNV due to age-related macular degeneration is safe and few side effects. Intravitreal avastin associated with improvement in visual acuity ( VA ) , which can reduce macular edema and choroidal neovascularization leakage. But a prolonged treatment effect needs further observation.