ObjectiveTo explore the characteristics of the cognitive changes in patients with lacunar infarction(LI) after carotid artery stenting(CAS).MethodsNeuropsychological tests were conducted in 43 patients with LI and carotid stenosis before and 1 month,6 months,12 months after CAS and the scores were compared with those of 41 healthy cases.ResultsCompared with control group,MMSE scores ( 26.33 ± 1.94),memory and executive function in therapy group lowered obviously.There was statistical difference (P＜ 0.05 or P＜ 0.01 ).Compared with before CAS,MMSE scores of 1 month (27.17±2.15),6 months (27.17 ±2.15),12 months (28.15±1.98) after CAS,memory and executive function in therapy group were all better obviously.There was statistical difference (P＜0.05 or P＜0.01).ConclusionIn acute stage of patients with LI (with in 1 week),most cognitive impairment was severe. Most cognition disorders was improved to normal level 12 months after CAS.The mechanism may be associated with the improvement of chronic cerebral insufficiency.

Objective To make a preliminary investigation and summary of the technique and efficacy of the novel intracranial stent, Enterprise, together with hydro-detachable coils for the treatment of very small intracranial wide-necked aneurysms (diameter<3 nun and body-to-neck ratio<1.5). Methods Six cases with very small intracranial wide-necked aneurysms were treated with Enterprise stents and hydro-detachable coils. In 5 cases the Enterprise stent was implanted to cover the neck of the aneurysm, which was followed by the introduction of a microcatheter into the aneurysmal sac through the stent mesh to stuff hydro-detachable coils in order to fill the aneurysmal sac. In the remaining case, the microcatheter was placed into the aneurysmal sac before the Enterprise stent was inserted to embolize the aneurysm. Postoperative follow-up was conducted for 3-6 months. Results The operation was successfully completed in all 6 patients, with the implanted stents being in right place. The parent arteries remained patency in all patients. No complications occurred. Complete occlusion of aneurysmal cavity was obtained in four cases, and the occlusion degree of the aneurysmal cavity above 95% was seen in 2 cases. After the procedure, all the patients recovered well. Neither rebleeding nor symptoms related to thrombosis occurred during a clinic follow-up of 3-6 months. Conclusion Endovasculur embolization with Enterprise stent together with hydro-detachable coils is a safe and effective method for the treatment of very small intracranial wide-necked aneurysms. However, its long-term effect needs to be further observed.

OBJECTIVETo explore the correlation of the gene polymorphisms of Toll-like receptor 2 ( TLR2) and TLR4 with the susceptibility and recurrence of condyloma acuminatum (CA).

METHODSUsing Snapshot, we detected the gene polymorphisms of TLR2 597(T/C), 1350(T/C), 15607(A/G), and 2258(G/A) and TLR4 896(A/G) and 1196(C/T) in the peripheral blood of 140 CA patients and 105 HPV-negative controls. We made comparisons between the CA patients and controls as well as between the cases of recurrent CA and those of non-recurrence at 6 months after treatment.

RESULTSThere were 72, 48, and 20 cases of genotype TT, TC, and CC of TLR2 597 (T/C), respectively, in the CA patients, as compared with 71, 31, and 3 cases in the controls. The gene frequency of mutant C was 31. 43% in the patients, significantly higher than 17.62% in the controls (χ2 = 12.04, P < 0.01), and it was 38.68% in the recurrent cases, remarkably higher than 27.01% in the non-recurrent cases (χ2 = 4.16, P < 0.05). There were 74, 49, and 17 cases of genotype TT, TC, and CC of TLR2 1350( T/C), respectively, in the CA patients, as compared with 73, 29, and 3 cases in the controls. The gene frequency of mutant C was 29. 64% in the patients, significantly higher than 16. 67% in the controls (χ2 =11.05, P < 0.01), and it was 36.79% in the recurrent cases, markedly higher than 25. 29% in the non-recurrent cases (χ2 = 4.18, P < 0.05). There were 44, 66, and 30 cases of genotype AA, AG, and GG of TLR2 15607(A/G), respectively, in the CA patients, as compared with 26, 58, and 21 cases in the controls. There was no significant difference in the gene frequencies of mutant G between the two groups (χ2 = 0.33, P > 0.05). No mutant genes of TLR2 2508 (G/A) or TLR4 896(A/G) and 1196(C/ T) were detected in either the CA patients or the controls. Linkage disequilibrium analysis showed a tight linkage between TLR2 597 (T/C) and 1350(T/C) (D' = 1, r2 = 0.93).

CONCLUSIONTLR2 597(T/C) is tightly linked to 1350(T/C), which is correlated with both the susceptibility and the recurrence of condyloma acuminatum.

Aged ; Case-Control Studies ; Condylomata Acuminata ; genetics ; Gene Frequency ; Genetic Linkage ; Genetic Predisposition to Disease ; Genotype ; Humans ; Polymorphism, Genetic ; Recurrence ; Toll-Like Receptor 2 ; genetics ; Toll-Like Receptor 4 ; genetics

Objective To investigate the radiosensitivity effects of poly ADP-ribose polymerase-1 (PARP-1) inhibitor 3-amion benzamide (3-AB) on the BRCA non-mutant and BRCA mutant breast cancer cells,and to explore the regulatory mechanism of PARP-1 and BRCA in radiation-induced DNA damage repair.Methods MDA-MB-436 cells and MDA-MB-231 cells were divided into four groups respectively as the control (CTRL),ionizing radiation alone (IR),3-AB alone (3-AB),and ionizing radiation combined with 3-AB(IR + 3-AB)group.γ-H2AX foci were detected by immunofluorescence assay.The radiosensitivity of breast cancer cells was evaluated by clonogenic survival assay.The percentage of apoptotic cells was assessed by flow cytometry.Results Compared with MDA-MB-231 cells,MDA-MB-436 cells had a higher radiosensitivity and produced more γ-H2AX foci(t =4.57,P ＜ 0.05),which was further increased by 3-AB.The DNA damage of MDA-MB-436 cells in the IR + 3-AB group was the most remarkable (t =3.26,P ＜ 0.05).Flow cytometry showed that the cells in the IR + 3-AB group had the highest rate of apoptosis (t=3.81,P ＜ 0.05),and the apoptosis rate of MDA-MB-436 cells was significantly higher than MDA-MB-231 cells (t =2.96,P ＜ 0.05).Conclusions The radiosensetivity of BRCA mutant cells MDA-MB-436 is significantly higher than that of non-BRCA mutant cells MDA-MB-231.Inhibition of PARP-1 can further increase the apoptosis and radiosensitivity of BRCA-mutant cells by further blocking the repair of DNA single-strand break induced by ionizing radiation.

Objective To evaluate the early appearance of SARS on chest CT scan and its role in the early diagnosis Methods Forty cases of SARS in keeping with the criteria of the Ministry of Health had chest CT scans within 7 days of onset of symptoms, and CR chest X-ray films were available as well These chest X-rays and CT images were retrospectively reviewed to determine if there were any abnormalities on the images The lesions on the chest CT images were then further analyzed in terms of the number, location, size, and density Results Positive abnormalities on chest CT scans were revealed in all 40 SARS cases Positive findings on CR chest films were showed in only 25 cases, equivocal in 6, and normal in 9 cases The main abnormalities seen on CT and X-rays were pulmonary infiltrations varied markedly in severity 70% cases had 1 or 2 lesions on chest CT scan, 30% cases had 3 or more lesions The lesions seen on chest CT scan tended to be ground-glass opacification, sometimes with consolidation which was very faint and inhomogeneous, easily missed on chest X-rays Typically the lesions were located in the periphery of the lung, or both central and peripheral lung, but very rare in a pure central location They were commonly in the shape of patch or ball Conclusions Chest CT scan is much more sensitive in detecting the lesions of the lung in SARS The early appearance of SARS on chest CT scan is characteristic but non-specific, indicating that chest CT scan plays a very important role in the early diagnosis and differential diagnosis of SARS

OBJECTIVE:To investigate the characteristics of cecum and colon-specific drug delivery system of 4-aminosalicyl-ic acid-maltoside (4-ASA-Mal) in vitro. METHODS:With the cumulative release rate of 4-ASA as the index,HPLC was em-ployed to observe the delivery of 4-ASA-Mal (equivalent to 250 μg/ml 4-ASA) in the buffer solutions of different pH (1.2,6.8 and 7.4)and in the aqueous contents in different parts(stomach,small intestine,cecum and colon)of normal rats and the rat mod-els of ulcerative colitis. RESULTS:4-ASA-Mal was hardly released in the buffer solutions of different pH. 12 h cumulative release rates were less than 8% in the aqueous contents in the stomachs and small intestines of normal rats and rat models,and were 55%and 81% in the aqueous contents in the cecum and colons of normal rats,and 55% and 74% in the aqueous contents in the cecum and colons of model rats with ulcerative colitis. CONCLUSIONS:4-ASA-Mal can release a lot of 4-ASA in aqueous contents in ce-cum and colon,targeting cecum and colon in vitro.

Objective:To detect the inhibitory effects of CAL-101, a selective inhibitor of phosphoinostitide-3'-kinase delta (PI3Kδ), on Burkitt's lymphoma cell line Raji and diffused large B-cell lymphoma cell line SUDHL-10 and elucidate its relative mechanism. Methods:Raji and SUDHL-10 cells were treated with various concentrations of CAL-101. Methyl thiazolyl tetrazolium (MTT) assay was performed to determine the inhibitory effect of CAL-101 on lymphoma cells, and cell apoptosis was measured by Annexin V/PI and DAPI staining. Migration assays were performed with transwell to detect the migration of lymphoma cells derived from the stromal cell line HK. Western blot was used to detect the phosphorylation status of the ERK pathway. MTT and CalcuSyn software analyses were preformed to detect whether or not combining CAL-101 with bortezomib induces synergistic cytoxicity. Results:CAL-101 at con-centrations of 5, 10, 15, and 20μmol/L inhibited cell proliferation in a dose-dependent manner. The proliferation rates of the Raji cells treated with 5, 10, 15, and 20μmol/L for 48 h were 29.17%± 1.23%, 38.15%± 1.51%, 46.46%± 1.78%, and 55.8%± 2.01%, respec-tively, which were significantly higher (P<0.05) than that of the control group (1.15% ± 0.02%). Similar results were found in the SUDHL-10 cells after treatment with CAL-101 (P<0.05). CAL-101 also exerted an apoptotic effect on the lymphoma cells. The apop-totic rates of the Raji cells treated with CAL-101 for 21 h were 22.69%± 3.83%and 49.96%± 7.36%, respectively, which were signifi-cantly higher (P<0.05) than that of the control group (5.23%± 2.04%). Similar results were found in the SUDHL-10 cells (P<0.05). Treatment with 5 and 10 μmol/L CAL-101 dose-dependently inhibited the migration activity of lymphoma cells to stromal cells (P<0.05). Western blot analysis showed that the expression level of ERK phosphorylation protein was significantly downregulated in the cells treated with CAL-101. A synergistic effect between CAL-101 and bortezomib was verified. That is, these two drugs can signifi-cantly inhibit the proliferation of lymphoma cells with CI values less than 1. Conclusion:The PI3Kδ-specific inhibitor CAL-101 sup-pressed the proliferation of Raji and SUDHL-10 cells, induced apoptosis, and inhibited stromal cell-derived migration. This inhibitory effect may be induced by blocking the ERK pathway. Overall, our study indicated that CAL-101 is a novel and potential agent in the therapeutic strategy against aggressive B-cell lymphoma.

Objective To investigate the effect of autophagy in radiosensitivity of nasopharyngeal carcinoma CNE-2 cells.Methods The expression of ATG5 in CNE-2 cells was inhibited by lentiviral mediated RNA interference.The cells were divided into three groups:control group,NC group and ATG5 group.Cell proliferation,apoptosis and radiosensitivity were detected by CCK-8 method,flow cytometry and colony-forming assay,respectively.Results Compared with the NC group and control group,the survival of ATG5-interfected cells was reduced (F =3.755,46.086,8.609,44.160,P ＜ 0.05).After 6 Gy X-ray irradiation,the apoptosis index of the ATG5 group significantly higher than that of NC group and control group (F =394.876,P ＜ 0.05).In addition,the radiosensitivity of ATG5 group was also higher than that of control cells.Conclusions Suppression of autophagy activity enhances the radiosensitivity of human nasopharyngeal carcinoma cells.

Objective To investigate the effect of Amp activated protein kinase(AMPK)activity in radiosensitivity of human na-sopharyngeal carcinoma cells .Methods Human nasopharyngeal carcinoma cells ,CNE-2 ,were treated with AMPK inhibitor ,Com-pound C(CC) ,for 1 h .Then cells were explored in X-ray .The expression of total AMPK (t-AMPK) ,phosphorylation AMPK (p-AMPK) ,and MAPlLC3 were detected by Western blot .The number of autophagosomes were observed and calculated by transmis-sion electron microscope(TEM) .Cells processed with CC were explored in X-ray .MTT assay was used to detect the difference of two groups in cell proliferation .Cell apoptosis were assayed by flow cytometry .Results The expression of p-AMPK in CC group cells were significantly downregulated compared to the negative control group cells (P< 0 .01) ,while no significant change of t-AMPK expression were found(P>0 .05) .The expression of MAPlLC3 and the number of autophagosomes in CC group cells were significantly decreased compared to the control group cells (P<0 .05) .Correspondingly ,the cell proliferation rate in CC group was lower than in control group ,and the percent of apoptosis cells was higher in CC group than in control group (P<0 .05) .Conclusion Suppression of AM PK activity could inhibited autophagy induced by decreasing the degree of p-AM PK ,then enhanced the effect of proliferation inhibition and apoptosis promotion in CNE-2 cells .The AMPK inhibitor ,CC ,can serve as an effective assistant treatment of radiotherapy for nasopharyngeal carcinoma .

Objective To observe the vaccination reactions and immunogenicity of the application of lyophilized Vero cell rabies vaccine without adjuvant in a way of low-dose intradermal injection for post-exposure group. Methods Conducting post-exposure immunization for 256 persons with the class Ⅱ level exposure to rabies. Based on a randomized, single-blind principle, all subjects were divided into intradermal injection (ID) group (n= 128),injected 0.1 ml for each site in accordance with 0,3,7,28,90 d,2 sites,2 sites,2sites,1 site,1 site respectively, and intramuscular injection(IM) group(n= 128) in accordance with 0,3,7,14,28 d in full-volume (0.5ml) PVRV Deltoid injection. The local and systemic vaccination reactions were observed for the different injection ways. The indirect sandwich ELISA assay was used to analyze the antibody levels. Results For the intradermal injection group, the incidence rates for local redness and swelling, induration, pain, itch were 1.27%, 0.29% ,0.49% ,11.43% respectively,for the intramuscular group, the incidence rates were 1.09% ,0. 16% ,2. 81% ,1.41% respectively. From the point of systemic reactions,the incidence rates of fever,rash,headache,fatigue and weakness were 0.31 % ,0. 16% ,0. 31 % , 1.09% respectively in the intradermal injection group,and the rates were 0.31% ,0.31% ,0.63% , 1.09% respectively in intramuscular group. All the adverse effects often occurred following the 1st,2nd injection. The seroconversion rates for intradermal injection and intramuscular were 94.53% ,95.31% following 14 d immunization respectively,the rates were 96. 83% ,97.64% following 42 d immunization respectively. For the post-exposure group,no statistical difference in significance was found between the two seroconversion rates. Conclusion For the application of domestic lyophilized Vero cell rabies vaccine,its adverse reactions are mild,and immunogenicity is good.