Objective To establish a method for the determination of baicalin in Huangqin Eye Drops by HPLC. Methods A HPLC was performed on Shim- pack VP- ODS column(4.6 mm? 250 mm), a mixture of methanol- 0.2 % phosphoric acid (44 ∶ 55)was used as the mobile phase and the detection wavelength was 276nm. The flow rate was 1.0 mL/min with injection volume of 20 ? L and the column temperature was 35 ℃ .Results The linearity of baicalin was good in the range of 0.08～ 0.80 ? g (r=0.9997), and the average recovery was 100.10 % , with RSD 0.81 % . Conclusion This method was simple, sensitive and accurate , and can be used for quality control of Huangqin Eye Drops.

OBJECTIVETo explore the impacts on EC50 in the remifentanil inhibition of tracheal intubation response by the transcutaneous electrical acupoint stimulation (TEAS) at Hegu (LI 4) and Neiguan (PC 6).

METHODSForty patients with selective surgery undergoing endotracheal intubation with intravenous general anesthesia were divided into I to II degree by the American Society of Anesthesiologists (ASA) and were randomized into an observation group and a control group, 20 cases in each one. Before general anesthesia induction, in the observation group, the transcutaneous electric stimulation was applied to bilateral Hegu (LI 4) and Neiguan (PC 6) for 30 min, with dense-disperse wave, 2 Hz/100 Hz in frequency; in the control group, the sham-stimulation was applied to the acupoints, with the lamp on, but without electric current output. Afterwards, the general anesthesia induction started. When the target concentration of propofol and remifentanil was stabilized at the preset value, the endotracheal intubation was conducted. Dixon sequential method was applied for the determination of ECs in remifentanil inhibition of tracheal intubation response.

RESULTSThe level of EC50 in remifentanil inhibition of tracheal intubation response was 3. 46 ng/mL, 95% confidence interval was 2. 80 ng/ml to 4. 27ng/mL in the observation group; those were 4. 18 ng/mL and 3. 30 ng/mL to 5. 29 ng/mL in the control group separately. The differences were significant in comparison of the two groups (P<0. 01).

CONCLUSIONTEAS apparently reduces EChe in the remifentanil inhibition of tracheal intubation response by around 17%as.

Acupuncture Points ; Adult ; Aged ; Anesthetics, Intravenous ; administration & dosage ; Female ; Humans ; Intubation, Intratracheal ; adverse effects ; Male ; Middle Aged ; Pain ; etiology ; Pain Management ; Piperidines ; administration & dosage ; Transcutaneous Electric Nerve Stimulation

Oxygen free radical, an important risk factor for cerebral infarction, plays an important role in the formation of atherosclerosis, and it is one of the major factors of cerebral isehemia-reperfusion injury after cerebral infarction. Glutathione peroxidase (GPx) is a crucial antioxidant enzyme, its main role is to scavenge the excessive oxygen free radicals produced from metabolism or during the oxidative stress. The deficiency of GPx will increase the risk of cerebral infarction. This article reviews the biological characteristics of GPx and its correlation with cerebral infarction.

A new target in cancer treatment involves tumor-associated macrophages (TAMs) which are infiltrated in microenvi-ronment. By secreting a wide range of cancer-promoting cytokines, such as vascular endothelial growth factor, interleukins, and matrix metalloproteinase, TAMs can promote the proliferation, invasion, and metastasis of cancer cells. Cyclooxygenase-2 (COX-2), an inflam-matory factor that is significant for angiogenesis and immunoregulation within the local microenvironment, may also contribute to can-cer progression and act as a novel target for breast cancer therapy. Several COX-2 inhibitors, such as celecoxib, have shown potential as suppressors of TAMs and the microenvironment. Hence, the current study discusses the crosstalk between TAMs-delivered important cytokines and COX-2 in the breast cancer microenvironment, and then analyzes the value of homologous antagonists alone or in combi-nation with COX-2 inhibitors. This paper aims to provide the theoretical principle of multi-target selection in TAMs blockage, and offer a new direction for biological targeted therapy in breast cancer treatment.

The hemodynamics of 49 scheduled patients during anesthesia and opration for mitral and aortic valve replacement were studied with the insertion of SwanGanz catheter and by the method of thermodilution technics.Pre-anesthesia CI and LVWI were in the nor mal range with abnormal MPAP, PCWP, PTRI and RVWI.Increase of RAP and decrease in MPA,PCWP, MAP, CI, LVWI and RVWI were observed during induction of anesthesia. The hemodynamic parameters returned to or exceded the pre-anesthesia values after trachcal intubation and sternotomy. The CI, MAP, MPAP, PCWP, LVWI and RVWI decreased signifi- cantly after insertion of aorta and vena cava catheter. The reduction of MPAP, P(IWP,PTRI and RVWI post-cardiopulmonary bypass (CPB) were significant and persistent with no change of PVRI.The lower MAP,SVRI and deterioration of cardiac performance post-CPB indicate that the administeration of positive inotropir agents and restoration of hematocrit are nec essary as early as possible.

The effects of normothermic or hypothermic cardiopulmonary bypass(CPB)on hemodynamics, plasma levels of endothelin(ET)and atrial natriuetic peptide(ANP)were comparatively studied in dogs with Swan-Ganz catheter technique and radioimmunoassay. The results showed the total peripheral resistance(TPR)during hypothermic CPB was significantly higher than that of the normothermic. Plasm ET levels increased significantly during hypothermic CPB but remained stable during normothermic CPB. Plasma ANP levels almost unchanged during either CPB. Plasma ET level was positively correlated to TPR but ANT level was not. The results suggest that the increased ET levels may be one of the causes of higher TPR during hypothermic CPB;the stable ET levels contributes to the maintenance of cardiovascular function during and after normothermic CPB and the ANP amount secreted beyond the heart has little effect on the plasma level and hemodynamics during CPB.

Objective: To evaluate the effects of isoflurane-nitrous oxide on hemodynamics in patients undergoing cardiac valve replacement. Method:Hemodynamics values were measured with Swan-Ganz technique. Thirty-nine patients were divided into two groups according to their cardiac function before surgery. The patients with cardiac function Ⅱ degree were belong to group Ⅰ and those with cardiac function Ⅲ-Ⅳ degree to group Ⅱ. Result:CI,LVWI, RVWI,HR and MAP decreased significantly in both groups after induction of anesthesia without change in SI. During tracheal intubation and sternotomy,CI and LVWI decreased,PTRI and SVRI increased,particularly in group Ⅱ. During aorta and vena cava intubation the changes of hemodynamics were relatively complicated with CI and SI improved in group Ⅱ and further decreased in group Ⅰ. After CPB,MPAP,PAWP,PTRI and SVRI were decreasad in different degree in both groups with significant increased in CI and SI in group Ⅱ. Conclusion:Induction and maintenance anes thesia with 1.0%-1.5% isoflurane and 40%-50% N_2O are suitable in patients with impaired cardiac function.

Objective: To observe the changes of the pulmonary ventilatory function during cardiac valve operation under cardiopulmonary bypass(CPB). Method: Thirty-four patients undergoing cardiac valve operation were selected. The pulmonary function was measured with side stream spirometer. Result: P_(peak) and P_(plat) did not have any significant changes within 60 min after CPB, but increased significantly at the end of surgery and after closure of sternum(P

Objective To study the effects of sitting position on pulmonary hemodynamics and intrapulmonary shunt (Qs/Qt) during neurosurgery. Methods Twenty eight patients scheduled for posterior fossa and posterior cervical spinal surgery, were anesthetized with sevoflurane fentanyl pancuronium or enflurane fentanyl pancuronium after intravenous induction. Pulmonary hemodynamics were monitored with Swan Ganz catheter technique and Qs/Qt was calculated from the data of arterial and mixture venous blood gas analysis, including the following parameters: CI, RAP, MPAP, PCWP, PVRI, pHa, PaCO 2, PaO 2, PaO 2/FiO 2 and Qs/Qt. The detection time points were as the follow: before anesthesia induction, before sitting position, immediately ,60 min and 120min after sitting position, and at the supine position after termination of surgery.Results After induction of anesthesia and during operation at sitting position, CI decreased significantly (P0.05).Conclusions During neurosurgical procedure under general anesthesia and sitting position, pulmonary vascular auto regulation can be preserved and pulmonary oxygenation can be kept in normal.

The result regarding the application of McAbs against PwMJ-SAg in the detection of the circulating antigens(CAg) in sera from the patients (early stage and nonpulmonary type) with paragonimiasis westermani was reported in this paper. CAg in the sera from 35 patients in the early stage and 15 nonpulmonary type of patients was 100% positive by using McAb IB1 and JB4 out of 8 McAbs against PwMJ-SAg. Furthermore, these two McAbs didnot react crossly with the sera from 25 normal subjects, 15 patients with clonorchiasis, 15 patients with fasciolopsiasis, 15 patients with schistosomiasis japonica, 16 patients with Brugian filariasis or 10 patients with pulmonary tuberculosis. However, they crossly reacted with 8 samples of sera from 15 patients (53.3%) with pagumogonimiasis skrjabini. The McAb IB1 and IB4, threfore, are appropriate as the reagents to diagnose paragonimiasis westermani (early stage or nonpulmonary type). Moreover, they are also valuable, to a certain degree, to diagnose pagumogonimiasis skrjabini.The projet was supported by NNSFC Department of parasitology .Anhni Medical University, Hefei