Cerebral ischemia models of rabbits were induced by four-artery obstruction method. The changes of excitatory amino acid (EAA) transmitters,brain-tissue calcium (TCa) and intramitochondria calcium (MCa) of the cerebral cortex were measured and the effects of ketamine were observed. The results revealed that 20 minutes after ischemia,the amoumts of the EAA transmitters (Glu and Asp) in brain tissues were decreased, and decreased further after reperfusion. But after 20 minutes ischemia,the levels of TCa and MCa were elevated and higher than that of ischemia and contral groups significantly after the reperfusion. Ketamine could increase the Glu and Asp contents and decrease the TCa and MCa levels during ischemia and reperfusion.

Drug metabolism will change significantly during inflammation, including the reduction of expression and activity of many drug metabolizing enzymes and transporters. Body would release a series of inflammatory cytokines which can regulate drug metabolizing enzymes. Recent studies have revealed that drug transporters are also regulated by the cytokines with obvious species difference. Mechanism studies show that several transcription factors play important roles during the signal pathways of regulation. This review focuses on the progress in the regulation of drug transporters during inflammation.

Regulation of the activity of CYP450 has always been research focus of drug metabolism. The effect of compounds on the mRNA and protein expression level of CYP450 is the main purpose of most of the existing reports. In recent years, the protein modification in the posttranslation level has been found to participate in maintaining the proper function of CYP450, thus effect of posttranslational modification on the enzyme activity has been paid more and more attention. Posttranslational modifications including phosphorylation, nitration, and ubiquitination have been described to regulate the activity of CYP450. In this paper, recent developments in the effects of posttranslational modifications on the activity of CYP450 have been reviewed.

Nuclear receptors pregnane X receptor (PXR) and constitutive androstane receptor (CAR) are originally characterized as transcription factors regulating many target genes. Recent works have revealed that these nuclear receptors play critical roles in regulating genes that encode drug metabolism enzymes and modulating hepatic energy metabolism, such as down-regulating gluconeogenesis, fatty acid oxidation, and ketogenesis, as well as up-regulating lipogenesis. Studies on PXR and CAR have important implication on drug-drug interaction (DDI) and potential disease treatment targets.

Objective To observe the efficacy of arterial thrombolysis treatment in patients with acute cerebral infarction caused by internal carotid artery(ICA),middle cerebral artery(MCA)and vertebrobasilar artery(VBA)occlusion and during different time windows.Methods In the 40 patients with different artery(12 ICA,18 MCA and 10 VBA)occlusions,19 patients with the time windows of 0.05).The rate of better prognosis at 90 d followed up with MRS demonstrated 77.8% in MCA,41.7% in ICA and 30.0% in VBA and there were significant difference among these three groups(all P

The effects of ketamine on the hemodynamics in the postshock stage in 10 severely burn patients were observed.Their average burn area was 53.7?14% TBSA.Anesthesia was inducedwith 2 mg/kg of ketamine and then maintained with 50?g/kg/minute of ketamine.All the patients kept on spontaneous breathing.Measurements were performed before anesthesia,5 and 30 minutes after the induction of anesthesia.and 20 minutes after the discontinuation of ketamine.Our findings indicate that the severely burn patients in the postshock stage were in a state of active hemodynamics with increased cardiac output and decreased peripheral resistance.The plasma concentrations of epinephrine and norepinephrine were apparently increased.A small dose of ketamine could further increase the release of epinephrine,which is beneficial to the restoration of normal cardiovascular functions.

Objective To standardize the detection procedure and improve the detection ability through the capability evaluation of transfusion compatibility tests for blood transfusion departments in Dalian .Methods Both on‐site inspection and external quality assessment(EQA) were used .The items of on‐site inspection consisted of equipments ,reagents ,tests ,operating instructions and re‐cords .EQA included ABO grouping ,Rh(D) grouping ,antibody screening and crossmatching .Results 42 of 62 blood transfusion departments were qualified .Only one was unqualified in on‐site inspection because antibody screening were not carried out .The un‐qualified ratio of second‐class hospitals′ EQA was the highest (42 .3% ) .The coincidence rates of antibody screening and crossmatching were 82 .0% and 77 .4% respectively ,while those of ABO grouping and Rh(D) grouping was 100 .0% .Conclusion Relatively fixed staffing in laboratories and continual training was important for the improvement of transfusion compatibility tests .

The hemodynamic effects of deliberated hypotension induced by PGE1 or SNP on 14 dogs anesthetized by ketamine were studied separately.MAP was decreased by 30%~40% after infusing PGE,or SNP Hemodynamic variables were measured before and 15 min 30 min after hypotension and 15 min after the discontinuation of infusion.The results indicated that SVRI, PVRI, MPAP, LVSWI and RVSWI all decreased significantly during PGE1-or SNP-induced hypotension. CVP decreased and HR increased significantly during SNP-induced hypotension, but with no significant change during PGE1-induced hypotension and with SVI. CI. PCWP remained unchanged in these two groups throughout the experiments.

Using the model of the rabbit brain ischemia the intracellular calcium accumulation and ultrastructure alteration of cerebral cortex were observed. The results indicated that the longer the ischemia reperfusion time,the more was the calcium accumulation and ultrastructure alteration in cerebral cortex. It is revealed that calcium plays an important role in the brain Injury induced by ischemia-reperfusion. The mechanism of brain injury related to calci- um was diseussed.

0. 05),cardiac index decreased from 12. 5% to 13. 3 % during hypotension (P 0. 05 ). It was concluded that PaCO2 can still be followed continuously and noninvasively by monitoring end-tidal CO2 tension during hypotension induced by PGE,