Intervention with thumbtack needling on spinal low back pain in Air Force crew: a randomized controlled trial / 中国针灸

OBJECTIVE@#To observe the clinical effect on spinal low back pain (SLBP) in Air Force crew treated with novel thumbtack needling therapy and to analyze the relevant factors of the therapeutic effect.@*METHODS@#A total of 120 Air Force crew with SLBP were randomized into a thumbtack needling group (40 cases), an external treatment group (40 cases, 1 case dropped off ) and a combined treatment group (40 cases, 1 case dropped off ). In the thumbtack needling group, the thumbtack needling therapy was adopted. The novel thumbtack needles were inserted at the lower No.6 region of the wrist-ankle acupuncture, Yaotongdian (EX-UE 7), Yaoyangguan (GV 3), etc. Each point was pressed and kneaded for 1 min each time, 3 or 4 times a day. The treatment for 3 days was taken as one course. At the interval of 2 days, 3 courses were required totally. In the external treatment group, @*RESULTS@#Compared with the values before treatment, McGill scores and ODI scores were reduced (@*CONCLUSION@#The thumbtack needling therapy is significantly effective on spinal low back pain in Air Force crew and is of the safety. Hence, this therapy is applicable to be promoted in the primary care army hospital.

Selective determination of norepinephrine by a cyclic voltammetric method using poly-proline-modified electrodes / 南方医科大学学报

<p><b>OBJECTIVE</b>To establish a new method for determining norepinephrine (NE) in the presence of epinephrine and ascorbic acid using proline-modified glassy carbon electrode (GCE).</p><p><b>METHODS</b>In phosphate buffer solution (pH 9.0), the poly-proline-modified electrode was prepared by cyclic voltammetry method. The voltammetric behavior of NE on poly(proline) film were analyzed to establish a electrochemical analysis method for determination of NE on the modified electrode.</p><p><b>RESULTS</b>In PBS (pH 7.0), a couple of redox peaks of NE was observed on the modified electrode. The modified electrode was used to determine NE in a excess of epinephrine (EP) and ascorbic acid (AA) by reduction peak current of cyclic voltammetry. The reduction peak currents were in linear relationship with the NE concentrations within the range of 7.0 x 10(-7) to 1.1 x 10(-4) mol/L, with the detection limit of 6.0x10(-8) mol/L.</p><p><b>CONCLUSION</b>The modified electrode shows good sensitivity, selectivity, and stability for NE determination, and is well applicable for analysis of injection solution samples.</p>

Selective determination of dopamine in the presence of high concentration of ascorbic acid with L-cysteine modified glassy carbon electrodes / 南方医科大学学报

<p><b>OBJECTIVE</b>To establish an assay system for determination of dopamine (DA) in the presence of ascorbic acid (AA) with L-cysteine modified glassy carbon electrode.</p><p><b>METHODS</b>L-cysteine was modified onto glassy carbon electrode electrochemically, and with this modified electrode, dopamine was determined by linear sweep stripping voltammetry.</p><p><b>RESULTS</b>L-cysteine polymer-modified electrode had strong catalytic effect towards the electrochemical oxidation of DA. The modified electrode showed good properties in determination of DA with coexisting AA. Under selected conditions, the linearity of DA was in the range of 2.0 x 10(-7) - 1.0 x 10(-4) mol/L with the detection limit of 2.0 x 10(-8) mol/L. The stability, reliability and recovery of this L-cysteine-modified electrode based on electrochemical method were also satisfactory.</p><p><b>CONCLUSION</b>L-cysteine-modified electrode can avoid the interference by AA for determination of DA.</p>