Objective To investigate effects of Cocain and amphetamine-regulated transcript(CART) peptides on cerebral ischemic damage and Caspases-3 activities of neurons.Methods 12 mice were randomly divided into CART group and the control group.Mice model of cerebral ischemic was made,after CART group was lateral ventricle injected CART peptides,control group was lateral ventricle injected saline water.Infarction volume was detected by TTC staining.Viability rate of OGD-neurons with CART peptides or salinewater,after mice cortical neuron in vitro was detected by MTT.Caspases-3 activitie was measured by ELISA.Results Infarction volume in the CART group [(0.225?0.044)mm3] was significantly smaller than that in the control group [(0.389?0.055)mm3](P

Objective To investigate and evaluate the changes of PYK2 expression in hippocampal neurons and microglial cells in Kainate acid-induced status epilepticus. Methods Kainate acid-induced status epilepticus was established in rats, and by using immunostaining, changes of PYK2 expression in hippocampal neurons and microglial cells was investigated. Results Expression of PYK2 in hippocampal pyramidal neurons was markedly decreased after kainate acid-induced status epilepticus. However, 24h after the epileptic onset, a pronounced up-regulation of PYK2 and phosphor-PYK2 immunoreactivities were evident in amoeboid microglial cells. The upregulation of PYK2 and phosphor-PYK2 was in accordance with the morphological changes of the activated microglial cells. Conclusion PYK2 was activated in microglial cells after seizure. Furthermore, the activation of PYK2 in microglial cells after seizure might be related to the morphological and behavioral changes of microglial cells after activation.

Objective To investigate and evaluate the changes of phospho PYK2 and phospho p38MAPK expression in neurons after focal cerebral ischemia. Methods Focal ischemia reperfusion model was established in rats, and by using immunostaining, the changes of phospho PYK2 and phospho p38MAPK expression in neurons was observed. Results Faint phospho PYK2 and phospho p38MAPK immunoreactivity were revealed in normal cortical neurons. Fifteen minutes after the ischemia onset, a pronounced upregulation of phospho PYK2 and phospho p38MAPK immunoreactivities were evident in these ischemia attacked neurons. The immunoreactivities of phospho PYK2 and phospho p38MAPK reached its peak at 30min after ischemia, and decreased 60min after ischemia. Conclusion Cerebral ischemia was able to induce neuronal PYK2 phosphorylation. The activation of PYK2 might link ischemia attack to the p38MAPK signaling pathway to initiate the neuronal response to the stress stimuli

Objective To clarify the distribution characteristics of serum pepsinogen (PG ) and gastric cancer related tumor markers in the healthy population ,and analyse their value in health examination .Methods The levels of serum tumor markers ,pep‐sinogenⅠ(PGⅠ ) and pepsinogenⅡ(PGⅡ) were detected in 958 subjects who underwent physical examination by using the Lumi‐nex 200 instrument ,and the ratio of PGⅠ /PGⅡ(PGR) was calculated .Meanwhile ,the C13 breath test was carried out ,and relation‐ships among these clinical indicators were analysed .Results In this population ,The serum level of PGⅠ in male subjects was high‐er than that in female subjects ,there was statistically significant difference(P<0 .05) .The levels of serum PGⅠ ,PGⅡ ,carcinoem‐bryonic antigen(CEA) ,carbohydrate antigen 199(CA199) and carbohydrate antigen 242(CA242) were gradually increased with age ,while the PGR was slowly decreased with age .The positive rate of C13 breath test in male subjects was higher than that in fe‐male subjects ,there was statistically significant difference(P<0 .05) .Compared with subjects whose C13 breath test results were negative ,the serum levels of PGⅠ and PGⅡ were higher ,while the PGR was lower in subjects whose C13 breath test results were positive(P<0 .05) .Conclusion The distribution of serum PG might be correlated with age ,gender and the infection of Helicobact‐er pylori in healthy population .It is shown that the effects of tumor markers on gastric cancer screening are limited .

Objective To determine the content of indirubin in Kangbingan Oral Liquid by UV spectrophotometer methods.Methods The content of indirubin was determined by Heltos Gamma ultravioletvisible spectrophotometer with chloroformic solution of 2～8 ?g/mL confected by standard sample of indigotin and indirubin.The sample of negative blank solution was confected by the prescription without Radix Isatidis.The standard sample and the blank sample were determined separately with the wavelength at 500～700 nm.Results Indirubin had the maximum absorption at wavelength of 540.0 nm and indigotin had the maximum absorption at wavelength of 634.5 nm.The linear correlation was available at the range of 0.20～1.40 ?g/mL,and the correct coefficient was 0.999 4.The average recovery rate was 99.05% and RSD was 0.87%(n=6).Conclusion This method is simple and accurate,and can be used to control the quality of Kangbingan Oral Liquid.

OBJECTIVE:To prepare aciclovir multivesicular liposomes of high encapsulation efficiency and good stability. METHODS: Aciclovir multivesicular liposomes were prepared by multiple emulsion method. The preparation technology was optimized by orthogonal experiment with entrapment efficiency as index and the amount of lubricant glyceryl trioleate (A),drug/lipid ratio (B),pH of buffer solution (C) and the amount of tween-80 (D) as factors. The concentration of the aciclovir was determined by the UV spectrophotometry and the entrapment efficiency of the aciclovir multivesicular liposomes was computed. The change of the entrapment efficiency of the optimized preparations within 7 days in different conditions was investigated and the leaking rate was computed. RESULTS: The optimal technology was as follows: A 0.50 g,B 5∶150,C 6.5 and D 0.40 g. The entrapment efficiency of the aciclovir multivesicular liposomes was 85.82% and the leaking rate was 5.84% within 7 days under common temperature. CONCLUSIONS: The preparation technology of the aciclovir multivesicular liposomes is simple and the preparation is of high entrapment efficiency and good stability under common temperature.

Objective To package the recombinant lentivirus containing HIV-1 Vpr gene and detect the effect of Vpr protein expression on the latent infection and lyric replication of KSHV.Methods The fragment of Vpr gene from expression plasmid pCI-neo-Vpr was cloned into the lentivirus vector pHAGE-CMV-MCS-IzsGreen,then the recombinant plasmid pHAGE-Vpr,package vector psPAX2 and envelope vector pMD2.G were cotransfected into 293T cells.GFP expression was observed by fluorescent microscopy.Culture media of 293T cells were harvested and filtered through 0.45 μm filter.After 293T cells were infected by a series of diluted lentivirus,the virus titer was checked by observing GFP expression.Vpr mRNA transcripts in 293T cells were detected by RT-PCR.Then BCBL-1 cells were infected by the recombinant lentivirus with 1 MOI,GFP expression was observed by fluorescent microscopy,and the mRNA transcripts and protein expression of Vpr in BCBL-1 cells were detected by RT-PCR and Western blot.Meanwhile,the mRNA transcripts and protein expression of KSHV lytic cycle gene Rta were detected by RT-PCR and Western blot,respectively.Results The recombinant lentivirus carrying HIV-1 Vpr was packaged successfully with the virus titer of 4 × 107 TU/ml.After infected with lentivirus,BCBL-1 cells could express GFP,and the exact band of Vpr was detectable by RT-PCR and Western blot.Moreover,the expression of KSHV Rta mRNA and protein were downregulated by Vpr protein.Conclusion Overexpression of HIV-1 Vpr mediated by the recombinant lentivirus could inhibit KSHV lytic replication and enhance KSHV latent infection.

Child ; Humans ; Middle Ear Ventilation ; Otitis Media ; Otitis Media with Effusion ; surgery ; Recurrence

Aim To compare cardioprotection effects between carvedilol and metoprolol in canine late reperfusion of acute myocardial infarction.Methods Eighteen anesthetized dogs were randomly divided into three groups: late reperfusion group(LR,n=6),late reperfusion after metoprolol treatment group(LR+M,n=6),and late reperfusion after carvedilol treatment group(LR+C,n=6),respectively orally giving physiological saline,metoprolol(1 mg?kg~(-1)?d~(-1)),and carvedilol(1 mg?kg~(-1)?d~(-1)) for seven days,and then late reperfusion of acute myocardial infarction model was made by ligating the coronary for 6 h,followed by reperfusion for 6 h.SOD,GR activity and MDA content of infarction brim myocardium were detected by colorimetry,Fas/FasL were detected by immunohistochemistry,apoptosis index(AI) were detected by TUNEL.Results Compared with LR,Myocardial MDA content in LR+C was decreased,and SOD and GR activities were significantly higher,but LR+M did not change.The expression of Fas/FasL and apoptosis index were significantly lowered in LR+M and LR+C,especially in LR+C.Conclusion Carvedilol and metoprolol have cardioprotection on late reperfusion of acute myocardial infarction,and carvedilol is superior to metoprolol and the pharmacological effects may due to its antioxidant effect.