[Expression of COX-1 and COX-2 in the Platelet of Iron Deficiency Anemia Women at Childbearing Age and Its Clinical Significance].

OBJECTIVE: To detect the expression level of cyclooxygenase-1（COX-1） and cyclooxygenase-2（COX-2） in the platelet of iron deficiency anemia（IDA）women at childbearing age and to explore its correlation with the different indexes of anemia and platelets. METHODS: Forty female IDA patients at childbearing age and 35 healthy controls were enrolled in this study. The Flow cytometry was used to detect the expression of platelet COX-1 and COX-2，the platelet aggregation function as examined by turbidimetric method，and the levels of serum ferritin were analyzed by electrochemical luminescence method，the leval of serum iron was determined by ELISA，and the correlation of different indexes was analyzed. RESULTS: Compared with healthy controls，the levels of platelet COX-1 and COX-2 were significantly lower in female IDA patients at Childbearing age（P<0.05），but platelet count（Plt），mean platelet volume（MPV） and platelet aggregation rate（PAgT）were not statistically different between the 2 groups（P > 0.05）. The expression level of platelet COX-1 positively correlated with those of Hb（r =0.623，P<0.01），serum iron（r =0.321，P<0.05） and HCT（r=0.305，P<0.05）. but the platelet COX-2 expression did not corelate with these indexs. CONCLUSION: The expression of platelet COX-1 and COX-2 in female IDA patients at Childbearing age markedly decrease，and the expression level of platelet COX-1 closely relates with the severity of anemia，that possesses reference value for clinical diagnosis of female IDA patients at Childbearing age..

6-Shogaol Protects against Oxidized LDL-Induced Endothelial Injruries by Inhibiting Oxidized LDL-Evoked LOX-1 Signaling.

Endothelial dysfunction and oxLDL are believed to be early and critical events in atherogenesis. 6-Shogaol is the major bioactive compound present in Zingiber officinale and possesses the anti-atherosclerotic effect. However, the mechanisms remain poorly understood. The goal of this study was to investigate the effects of 6-shogaol on oxLDL-induced Human umbilical vein endothelial cells (HUVECs) injuries and its possible molecular mechanisms. Hence, we studied the effects of 6-shogaol on cell apoptosis, cellular reactive oxygen species (ROS), NF- κ B activation, Bcl-2 expression, and caspase -3, -8, -9 activities. In addition, E-selectin, MCP-1, and ICAM-1 were determined by ELISA. Our study show that oxLDL increased LOX-1 expression, ROS levels, NF- κ B, caspases-9 and -3 activation and decreased Bcl-2 expression in HUVECs. These alterations were attenuated by 6-shogaol. Cotreatment with 6-shogaol and siRNA of LOX-1 synergistically reduced oxLDL-induced caspases -9, -3 activities and cell apoptosis. Overexpression of LOX-1 attenuated the protection by 6-shogaol and suppressed the effects of 6-shogaol on oxLDL-induced oxidative stress. In addition, oxLDL enhanced the activation of NF- κ B and expression of adhesion molecules. Pretreatment with 6-shogaol, however, exerted significant cytoprotective effects in all events. Our data indicate that 6-shogaol might be a potential natural antiapoptotic agent for the treatment of atherosclerosis.

[Short hairpin RNA targeting N-acetylglucosaminyltransferase V inhibits the proliferation of prostate cancer PC-3 cell line].

OBJECTIVE: To investigate the effect of short hairpin RNA (shRNA) targeting N-acetylglucosaminyltransferase V (GnT-V) on the proliferation of prostate cancer PC-3 cells. METHODS: Lipofectamine 2000 was used to transfect the recombinant plasmids carrying the shRNA targeting GnT-V gene into PC-3 cells. Semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) was used to measure the mRNA expression of GnT-V, and CCK-8 assay was used to measure the cell proliferation after the transfection. RESULTS: The recombinant plasmids were successfully transfected into PC-3 cells, resulting in a reduction of GnT-V mRNA expression by 73%. The proliferation of PC-3 cells was significantly inhibited after the transfection. CONCLUSION: The shRNA targeting GnT-V gene can reduce the expression of GnT-V mRNA and inhibit the proliferation of PC-3 cells in vitro.

[Clinical investigation of total intravenous anesthesia with remifentanil and propofol for colonoscopy in the elderly].

OBJECTIVE: To evaluate the efficacy and safety of intravenous anesthesia with remifentanil and propofol for colonoscopy in the elderly. METHODS: Thirty old patients scheduled for colonoscopy were randomly allocated into remifentanil group and fentanyl group. Those in group remifentanil received remifentanil at the dose of 0.05 microg/kg.min with micropump, while those in group F were given a bolus injection of fentanyl at 1 microg/kg intravenously. One minute later, all the patients were given a loading dose of propofol of 0.4 mg/kg followed by boluses of propofol (0.2 mg/kg) administered intermittently until Ramsay sedation scale III-IV. The induction time of anesthesia, intubation time of colonoscope, time of recovery from anesthesia and stay in the postanesthesia care unit (PACU) were recorded. The mean arterial pressure (MAP), heart rate (HR), pulse oxygen saturation (SpO(2)) and respiratory rate (RR) were measured and recorded with noninvasive monitoring. The lower limb movement, apnea, dizziness, body weakness, nausea and vomiting, and chest wall rigidity were recorded during operation. All the patients were reviewed for satisfaction after the operation. RESULTS: The time of anesthesia induction, intubation time of colonoscope, time of recovery from anesthesia and stay in PACU in remifentanil group were shorter than those in fentanyl group (P<0.05), and propofol consumption was significantly less in the former group (P<0.05). Greater MAP decrement was observed in remifentanil group (P<0.05). Fewer patients had lower limb movement while more had respiratory depression in remifentanil group than in fentanyl group. The rate of patient-rated satisfaction was significantly higher in remifentanil group (P<0.05). CONCLUSION: Intravenous anesthesia with remifentanil and propofol for colonoscopy is safe and reliable, which can be a good alternative for anesthesia in outpatient operation for the elderly.

[Comparison of the efficacy of cryoanalgesia and patient-controlled analgesia after thoracotomy].

OBJECTIVE: To compare the efficacy and safety of cryoanalgesia and patient-controlled epidural analgesia (PCEA) after thoracotomy. METHODS: Forty patients undergoing elective thoracotomy were randomly divided into cryoanalgesia group (L group, n=20) and PCEA group (n=20). Before chest closure, 4 costal nerve branches (at, above and below the incision, and one for inserting drainage tube) were isolated and frozen for 90 s at -40 to -89 degrees Celsius in L group. The mixture of 0.2% ropivacaine and 3 mg morphine solved in 100 ml normal saline was administered in patients of PCEA group through epidural catheter with PCA pump. The visual analogue scale scores for the analgesic effect and the incidence rate of complications were investigated at different time points every other two days after surgery. RESULTS: There was no difference in the analgesic effects between the two groups, but the rates of ST-T changes, arrhythmia and hypertension as well as the incidence rate of the complications such as postoperative nausea and vomiting, itch and respiratory depression etc differed significantly. CONCLUSION: Given the respective advantages and disadvantages of cryoanlgesia and PCEA, both of which prove to be effective for pain management postthoracotomy, their choice must be decided according to clinical needs.