BACKGROUND: There are several ways to measure content of pseudoephedrine, such as titration, spectrophotography,gas chromatography, capillary electrophoresis, high performance liquid chromatograpy (HPLC), combination of liquid chromatography, etc. Therefore, an exact method to measure concentration of medicine in blood is of significance for reasonable and safe administration in clinic.OBJECTIVE: To establish a reversed-phase-HPLC (RP-HPLC) method for determining the content of pseudoephedrine in blank plasma.DESIGN: Simple exponent study.SETTING: Department of Pharmacology, Renmin Hospital of Wuhan University.MATERIALS: The experiment was carried out in the Department of Pharmacology, Renmin Hospital of Wuhan University from May to July 2005. Pseudoephedrine was provided by Hubei Institute for Drug Testing. Blank plasma was provided by Central Blood Station of Xiaogan.METHODS: Standard plasma exponent was dispensed containing 50, 100, 200, 500, 750 and 1 000 μg/L pseudoephedrine, respectively. Pseudoephedrine was extracted from standard plasma exponent with organic solvent and its content was measured with HPLC. ZorbaxSB-C18 column (4.6 mm × 250 mm, 5 μm) was also used in this study [mobile phase: 0.2% phosphoric acid solution-acetonitrile (95:5); flow rate: 1.0 mL/min], and the detective wavelength was 194 nm.MAIN OUTCOME MEASURES: Veracity and feasibility through evaluating standard curve, precision and retrieved rate.RESULTS: Linearity ranged from 50 to 1 000 μg/L (r=0.999 3) and average retrieved rate was 79.20%. The relative standard deviation of within-day and between-day was less than 5%. The minimal detectable concentration of pseudoephedrine was 25 μg/L in plasma.CONCLUSION: RP-HPLC which is characterized by convenience and precision is suitable for researching pharmacokinetics and bioavailability of pseudoephedrine.

Aim To study the influence of Liensinine(LIE) on the oxidative damage of erythrocyte ghost. Method The erythrocyte ghost oxidative injury caused by super oxide anion (O?_2) from the auto-oxidation of pyrogallic acid was used as model. The effect of LIE on oxidated erythrocyte ghost was observed by the measurement of the malonidial aldehyde (MDA)-the degradation product of lipid peroxidation, blocking degree, speed of auto-oxidation and membrane fluidity. Result O?_2 caused lipid peroxidation of erythrocyte ghost, increased the content of MDA and the speed of auto-oxidation, decreased membrane fluidity, and alleviated blocking degree. But LIE(80, 100, 120 mg?L -1 )could decrease the content of MDA and speed of auto-oxidation markedly, improve the membrane fluidity and blocking degree significantly, and inhibit the lipid peroxidation. Conclusion LIE has protective action on the oxidative damage of erythrocyte ghost initiated by O?_2

Aim To investigate the effects of Liensinine on platelet aggregation and coagulation function in rats,as well as the effect on experimental thrombosis.Methods Inhibition rates of platelet aggregation for Liensinine in vivo were determined by the model of platelet aggregation induced by adenosine diphosphate.Coagulation time of mice was measured by capillary vessel method,and bleeding time of mice was measured by tail-cutting method.The effects of Liensinine were also evaluated on prothrombin time(PT),activated partial thromboplastin time(APTT)and thrombin time(TT).The model of artery-vein bypass thrombosis and Chandler's model were established to observe the effect of Liensinine.Results The result showed that Liensinine 5 and 10 mg?kg-1 had significant effect on inhibition of platelet aggregation and markedly prolonged bleeding time,coagulation time,PT,APTT and TT.Liensinine 5 and 10 mg?kg-1 inhibited the artery-vein bypass and Chandler's thrombus in different degree,reduced the thrombus weight significantly (either wet ordry).Conclusion Liensinine exerts remarkable effect against thrombosis and possesses strong effect against platelet aggregation and coagulation.

Adult ; Ear Ossicles ; injuries ; Humans ; Joint Dislocations ; Male ; Wounds and Injuries

Objective To investigate the effect of radiofrequency ablation on serum tumor necrosis factor alpha-α(TNF-α),interferon gamma-γ(IFN-γ)and interleukin 17 (IL-17)levels in patients with lumbar disc herniation.Methods We studied 276 patients with lumbar disc herniation admitted to the First Affiliated Hospital of Xi'an Jiaotong University from January 2010 to December 2015.The experimental group received radiofrequency thermocoagulation and target ablation decompression treatment.In the same period,133 healthy subjects were selected as control group.We collected the general information of the admitted patients and their serum before and after operation as well as serum of the control group.The changes of TNF-α,IFN-γand IL-17 levels were detected by ELISA method.Results The levels of serum TNF-α,IFN-γand IL-17 in the patients with lumbar disc herniation were significantly higher than those in the control group (P<0.05 ).Compared with those before operation,the serum levels of TNF-α,IFN-γand IL-17 were decreased significantly in the recovery phase after radiofrequency ablation (P<0.05).Conclusion Frequency thermal coagulation target ablation decompression treatment of lumbar disc herniation can not only improve pain symptoms but also reduce the systemic inflammatory reactions.Therefore,it deserves clinical application.

Objective To discuss the mechanism of injury,treatment decisions,complications and surgical results of the floating hip injuries (FHI).Methods Thirty-three patients with FHI were retrospectively analyzed in our hospital from June 2001to June 2011.There were 25 males and 8 females,with an average age of 34.6 years (range,4-73 years).The mechanism of injury was motor vehicle collision for 20 patients,fall down from a height for 11,crushed injury for 1,and sports-related injury for 1.According to Liebergall classification for the floating hip injuries,there were 7 cases for type Ⅰ (21.2％),9 for type Ⅱ (27.2％)and 17 for type Ⅲ (51.6％).All patients had associated injuries,the average injury severity score (ISS) was 28.9.Thirty-two of the femoral fractures underwent surgical stabilization of their femoral fractures.Surgical stabilization methods included ORIF or intramedullary nailing (29 cases),external fixation (1 case),total hip arthroplasty (2 cases).Acetabular fractures were treated with open reduction and internal fixation (ORIF) in 16 cases.Thirteen patients suffered pelvic fractures underwent surgical stabilization for at least one component of ring disruption.Results Twenty-eight cases (84.8％) were followed up for 2.3 to 10.1 years (average,3.5 years).Thirteen patients were followed up in the 16 patients who suffered type Ⅰ or Ⅱ fractures.According to Majeed functional evaluation,the results were excellent in 8 cases,good in 3 and fair in 2,with the excellent and good rate being 84.6％.Fifteen patients with type Ⅲ were followed up,according to D'Aubigné and Postel evaluation criterion.The joint functions were excellent in 7 cases,good in 4,fair in 3,and poor in 1,with the excellent and good rate being 73.3％.According to Ma Yuanzhang functional evaluation,the knee functions of the all patients were excellent in 23 cases,good in 3,and fair in 2,with the excellent and good rate being 92.9％.Complications seen in these patients included post-traumatic osteoarthritis of the hip developed in one hips,2 patients developed heterotopic ossification (HO),one case of avascular necrosis of the femoral head,and two femoral nonunions.The most severe complication was traumatic sciatic nerve palsy,which was found in 5 patients.Conclusion Ipsilateral injuries to the femur and the pelvis or acetabulum (floating hip) are severe injuries usually caused by high-energy trauma.The femur fracture will most commonly be addressed first,and surgeons should be aware of the high incidence of sciatic nerve palsy as well as treatment options and potential complications associated with this devastating combination of injuries.

Angiogenesis Inhibitors ; therapeutic use ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Medicine, Chinese Traditional ; Phytotherapy ; Precancerous Conditions ; drug therapy ; Stomach Neoplasms ; blood supply ; drug therapy

Objective: To study the roles of N methyl D aspartate acid (NMDA) receptors of glutamate in mediating the arterial baroreceptor reflex (ABR)in rostral ventrolateral medulla (RVLM) in rats. Methods: The blood pressure, heart rates and ABR were observed after the bilateral microinjection of 0.1 ?l 50 mmol/L ketamine into RVLM of ureth anesthetized rats. Results: Bilateral microinjection of ketamine into RVLM induced decrease of the blood pressure and heart rate ( P

To improve physician-patient morality accomplishment is the basic project for construct a harmonious society,a harmonious physician-patient relationship,and a harmonious hospital,thus is of great realistic significance and value.The improvement of physician-patient morality accomplishment contributes to the construction of a harmonious society,while a harmonious society also lays a solid foundation for the improvement of physician-patient morality accomplishment.Thus the two depend on,contribute and interact with each other.