Purpose:To study whether the inhibition of phosphatidylinositol 3-kinase (PI3K)/Akt survival pathway could sensitize the response of tumor cells to some chemotherapyeutic agents. Methods:The different tumor cells has been treated with the combination of isoform specific Akt inhibitor and either adriamycin or camptothecin; the quantitation of the induction of apoptosis by drugs has been estimated with caspase 3 assay; immunoprecipitation western blotting has been used to evaluate the inhibition of the phosphorylation of different isoforms of Akt after the treatment. Results:①The inhibitors could reduce the phosphorylation of Threonine 308 and Serine 473 of isoform specific Akt. ②The inhibition of any one isoform specific Akt could not reverse the resistance of tumor cells tested to chemotherapeutic drugs, but it is not the same case if blocking of two isoforms of both Akt1 and Akt2 was done at the same time. ③The synergistic effects of Akt inhibitors is maybe relative to the level of endogenous PTEN(phosphatase and tensin homolog deleted on chromosome 10) expression. Conclusions:It is required to inhibit two isoforms of both Akt1 and Akt2 in order to maximally sensitize the tumor cells to chemotherapy.

Objective To investigate the CT appearances of atypical renal angiomyolipoma to raise the CT diagnosing level and search for the differential points from renal angiomyolipoma. Methods Twenty-one patients with atypical renal angiomyolipoma and 24 patients with renal carcinoma underwent CT scan and enhanced scanning. Results CT results showed hyperintense in 12 of all 21 lesions of atypical renal angiomyolipoma,with iso-intensity in 6,hypointense in 3,and levering-cortex-up sign in 9 cases. The tumor body showed homogeneous enhancement on CT enhanced scanning and prolonged enhancement was noted in 7 cases. CT showed hyperintense in 3 of all 24 lesions of renal carcinoma,with mixed intensity in 5,hypointensity in 16,calcification in 2 cases. The majority of the tumor body showed heterogeneous enhancement on CT enhanced scanning with cortical hyperintensity and medullary low-intensity,and with contrast appeared fast wash-in and wash-out. Of all cases,8 presented with pseudo-capsule,7 with tumor embolus formation in the renal vein and inferior vena,10 with retroperitoneal lymphadenectasis,and 3 with intrahepatic metastasis. Conclusion CT scanning proves to play critical role in differentiating the atypical renal angiomyolipoma from renal carcinoma.

Objective To determine the CT features of the 16 - slice Spiral CT (MSCT) for aortic dissection (AD). Methods 16 - slice spiral CT were porformed in 25 patients of aortic dissection. All of patients were performed with unenhanced, contrast - enhanced scanning and three - dimensional reconstruction. Results 10 patients were normal on unenhanced and 15 patients were seen enlargred diameter of aorta. Intimal calcification and intimal displacement was seen in 8 cases and outer wall calcification was presented in 7 cases. After contrast - enhanced scanning, true and false lumen and intimal flap of AD could be shown in all of 25 cases (100%). The entry tears was revealed in 22 cases (88.9%). Beak sign was presented in all cases, but it was seen in the false lumen. The larger lumen was the false lumen in 88.5% of the cases. Intraluminal thrombus was presented in 12 cases. Conclusion Multislice spiral CT angiography is a safe,no - traumation,fast and accurate examination method. It can fully display theintimal flap,the true and false lumen and tear entrance, as well as the branches involved details and is therefore of important value for the diagnosis of aortic dissection.

OBJECTIVE:To establish the HPLC fingerprints for Dangua yangmu cream. METHODS:HPLC was performed on the column of Kromasil C18 with mobile phase of acetonitrile-0.026% phosphoric(gradient elution)at flow rate of 0.8 ml/min,the detection wavelength was 270 nm,the column temperature was 25 ℃ and the injection volume was 20 μl. The chromatographic peak of aurantio-obtusin was used as reference peak to determine the 10 batches of Dangua yangmu cream,and Similarity Evalua-tion System for Chromatographic Fingerprint of TCM(version 2.0)was conducted to identify common peaks and evaluate similari-ty. RESULTS:There were totally 25 common peaks in the 10 batches of Dangua yangmu cream,and the similarity was not lower than 0.921. The validation results showed the fingerprints of 10 batches of Dangua yangmu cream had good consistency with the ref-erence fingerprints. COMCLUSIONS:The established method is specific and reliable,and can provide basis for the quality evalua-tion and control of Dangua yangmu cream.

BACKGROUND: It is pointed in some experiment that acidic peptide improves learning and memory of model rat with Alzheimer disease (AD) by inhibiting the synthesis of toxic compounds of nitric oxide (NO).OBJECTIVE: Animal model with Alzheimer disease was established to observe the changes in the levels of NO, nitric oxide synthase (NOS) and acetylcholinesterase (AChE) treated with acidic peptide of various dose concentration.DESIGN: Randomized control and single experiment.SETTING: Teaching-Research Room of Biochemistry and Molecular Biology of Basic Medical College of Zhengzhou University.MATERIALS: The experiment was performed in 2nd Research Room and Experimental Animal Room of Teaching-Research Room of Biochemistry and Molecular Biology of Basic Medical College of Zhengzhou University.Totally 100 SD male rats were selected and some of them were excluded due to retarded response in step down test. Totally 84 rats were included in the experiment and randomized into 7 groups, named normal control,model group, physiological saline group (PS group), Piracetam group, acidic peptide groups of 15, 30 and 60 mg/kg, 12 rats in each group. Acidic peptide was a new small molecular peptide separated from bovine brain and is tripeptide composed of three glutamic acids.METHODS: Except normal control, in the rest groups, after 1 week routine breeding, cerebral stereotactic microinjection was used to inject 5 μg ibotenic acid in hippocampus of rats to destroy bilateral Meynert's nucleus basalis to establish AD model. In normal control and model group, no medication was applied. In PS group, physiological saline was used for gastric perfusion. In piracetam group, piracetam of 0.3 g/kg was used for gastric perfusion and in acidic peptide groupsof 15, 30 and 60 mg/kg,acidic peptide of 15, 30 and 60 mg/kg was applied for gastric perfusion successively, continuously for 20 days, once per day, 2 mL/time. On the expiration of gastric perfusion, the rats were sacrificed after anesthetized and the brain was collected on ice plate to prepare tissue homogenate. After centrifugated at 1 000 r/minute, 4℃ for 10 minutes, the supernatant was collected to assay the levels of NO, NOS and AChE with NO, NOS and AChE kits successively.MAIN OUTCOME MEASURES: Levels of NO, NOS and AChE in brain of rat in each groupRESULTS: Totally 84 rats were employed in the experiment and all entered result analysis. Comparison of levels of NO, NOS and AChE in rat brain of each group: compared with model group, NO levels in acidic peptide groups of 15, 30 and 60 mg/kg were reduced remarkably[(1.95±0.20), (1.39±0.10), (1.25±0.07), (1.00±0.04) mmoL/kg, P ＜ 0.05],NOS levels were reduced remarkably [(4.53±0.18), (3.39±0.09), (3.10±0.06),(2.97±0.06) μmol/kg, P ＜ 0.05] and AChE did not change remarkably[(0.67±0.12), (0.71±0.11), (0.72±0.08), (0.72±0.07) mmol/L, P ＞ 0.05].CONCLUSION: Acidic peptide reduces significantly the synthesis of NO and NOS in brain of AD rat, but it dose not affect AChE activity remarkably. It is suggested that acidic peptide improves learning and memory of rat with Alzheimer disease probably by inhibiting the synthesis of toxic compound of NO or its toxicity.

This study aims to investigate the change of plasma concentration of digoxin (DIG) in rats with ovariectomy. Twelve female SD rats were randomly assigned into ovariectomized group and sham group (n = 6). All rats plasma was collected after a single dose of 2 mg x kg(-1) DIG administrated orally, serum DIG concentration was determined by LC-MS/MS. The level of P-gp in the intestinal was analyzed by Western blotting. Pharmacokinetic calculations were performed on each individual using DAS 2.0 practical pharmacokinetic software. Compared with the sham group, C(max) of ovariectomized group decreased significantly (P < 0.01). There was no significant difference of AUC(0-t), and the level of P-gp was elevated in ovariectomized group. It was found that C(max) of DIG was significantly reduced after ovariectomy, and the change was associated with the decreased level of estrogen, which contributes to the increased level of P-gp.

Objective To estimate the efficiency of the single incision adjustable mini sling, Ajust, in the treatment of stress urinary incontinence (SUI) concomitant with advanced pelvic organ prolapse (POP) in eldly women. Methods From Dec. 2013 to Jul. 2014, 58 patients who had been diagnosed as SUI combined with advanced POP underwent both single incision adjustable mini sling and reductive surgery for advanced POP in the First Affiliated Hospital, General Hospital of People′s Liberation Army. Fifty-eight patients were assessed to evaluate the safety and efficiency at 2, 6, 12 months postoperatively. The primary outcomes include objective and subjective cure rate, Ajust sling related complications, ralues of urinary distress inventory (UDI-6), incontinence impact questionnaire short form (IIQ-7) and patient global impression of change (PGI-C). Results There was no case of leakage tested by cough test, so the objective cure rate for anti-incontinence had been achived to 100% (58/58) at a mean 12 months follow-up. There were 91% (53/58) of the patients′ PGI-C score reached 5, and 9% (5/58) of the patients′ PGI-C score reached 4. No case underwent the reoperation. There was no case of hematoma, bladder perforation, urethral injury, groin pain, as well as pain in the puncture point during the perioperative period of time. The values of UDI-6 and IIQ-7 declined significantly postoperatively (P<0.01). Conclusions The single incision mini sling, Ajust, presents satisfactory objective and subjective cure rate in the treatment of mild and moderate SUI combined with severe POP in the eldly womem. The advantages of this mini sling includes mini-invasiveness, simple to use, rare complications and less urinary retention rate. It is a procedure worth recommending in the clinical treatment of mild to moderate SUI.

Objective:To study the effects of Ophiocordyceps xuefengensis on proliferation of DC -CIK cells and the activity of killing HepG-2 cells by DC-CIK cells.Methods:Peripheral blood mononuclear cells were routinely isolated and induced into DC and CIK.DC and CIK co-cultured by 1∶5 for 7 days,then Ophiocordyceps xuefengensis were added into medicine group ,observed the mor-phology of the cells on the tenth day and counted the DC-CIK number of each group.DC-CIK cells acted as effector cells and the HepG-2 cells as target cells , cck-8 method for the detection of DC-CIK in the killing rate of HepG-2.Results: The Ophiocordyceps xuefengensis was able to proliferate the DC-CIK dramatically ,the optimal concentration was 0.1 mg/ml.Cultivation of Ophiocordyceps xuefengensis induced DC-CIK cells on HepG-2 cells killing effect was better than that of the routine method of DC-CIK cells; the effection of Ophiocordyceps xuefengensis killing HepG-2 cells was not obviously.Conclusion: Ophiocordyceps xuefengensis can enhance the anti-tumor activity of DC-CIK mainly by promoting the proliferation of it.

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Objective To compare the clinical characteristics of patients with non-valve atrial fibrillation(NAVF)and acute ischemic stroke(AIS) between two groups:aged ≥80 years versus 60-79 years.Methods One hundred and five inpatients with NVAF and AIS,treated in Neurological Department Beijing Hospital from November 2009 to November 2014,were divided into two groups of the very elderly patients (≥ 80 years,n =44) and old patients (60-79 years,n =61).Baseline data and clinical characteristics of patients with NAVF and AIS were retrospectively compared between the two groups to explore their risk factors,subtypes of AIS,the complications and prognosis.Results Age was the risk factor for stroke in the very elderly patients with NAVF.Compared with old patients group,the very elderly patients were associated with significantly higher baseline NIHSS(National Institutes of Health Stroke Scale) (11.59 ± 7.76 vs.6.03±7.12,t=3.80,P=0.000).The rates of mRS(modified Rankin Scale)≥3(poorer clinical turnover)1 or more month after AIS was 21.3％ in the old patients versus 56.8％ in the very elderly patients(x2 =13.96,P＜0.01).Moreover,anterior circulation infarction was the main subtypes of AIS in the very elderly patients versus old patients(x2 =12.28,P =0.020).Meanwhile,the very elderly patients versus the old patients had markedly higher rates of complications of AIS,such as pneumonia (65.9％ vs.27.9％;x2 =14.53,P ＜ 0.05),gastrointestinal bleeding(36.4％ vs.13.1％;x2 =7.84,P＜0.05),acute coronary syndrome or heart failure(34.1％ vs.11.5％;x2 =7.89,P＜0.05).Conclusions The very elderly patients versus the old patients show that risk factors for NVAF with AIS are more often the ageing and smoking,and that anterior cerebral circulation is more often affected.The degrees of NVAF and AIS severity are higher,the more complications are found,and the prognosis is worse.