In vitro properties of magnesium doped hydroxyapatite coating on the surface of carbon/carbon composites / 中国组织工程研究

BACKGROUND: In the early study, hydroxyapatite coatings containing magnesium (Mg-HA) were successfully prepared on the carbon/carbon composite surface by electromagnetic induction deposition. The effects of different induction deposition time on the morphology of Mg-HA coating were analyzed. OBJECTIVE:To investigate the in vitro properties of Mg-HA coating on the carbon/carbon composites. METHODS: HA (control group) and Mg-HA (experimental group) coating were prepared on the surface of carbon/carbon composites.(1)In vitro solubility:Carbon/carbon composites with different coatings were immersed in low-glucose DMEM medium, and surface morphology, ion concentration, and coating adhesion were tested before and after immersion. (2) Cytocompatibility: Carbon/carbon composites with different coatings were respectively cultured with mouse bone marrow mesenchymal stem cells for 6 days, and cell proliferation was measured by scanning electron microscope. RESULTS AND CONCLUSION: (1) One day after soaking, sediments formed on the coating surface in both groups, but there were more sediments in the experimental group than the control group. Six days after soaking, the sediments completely covered the coating surface in the experimental group, while there were still some gaps in the control group; Ca and P were both detected on the coating surface in the two groups, and the Mg content on the coating surface was obviously higher in the experimental group than the control group. (2) Six days after soaking, the concentrations of Ca, P and Mg in the control group continued to fall; in the experimental group, the concentrations of Ca and P were also reduced gradually, but the Mg concentration arose gradually. Moreover, the Mg concentration was significantly higher in the experimental group than the control group (P < 0.05). (3) The bonding strength of the coating in the experimental group was higher than that in the control group before and after 6 days soaking. In summary, the Mg-HA coating has better bonding strength and cell compatibility.

Effects of Scalp Acupuncture on Serum NSE and S-100β Concentrations and Postoperative Cogni- tive Function of Elderly Patients Undergoing Hip Replacement / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To explore the effect of Scalp acupuncture on serum neuron specific enolase (NSE) and S-100β concentrations, and incidence rates of postoperative delirium (POD) and postoperative cognitive function (POCD) of elderly patients undergoing hip replacement.</p><p><b>METHODS</b>Eighty-four patients undergoing scheduled hip replacement under combined spinal-epidural anesthesia (CSEA) were assigned to the control group (group C) and the scalp acupuncture group (group S) according to random digit table, 42 cases in each group. In group S, scalp acupuncture was additionally performed according to International Standardized Scheme for Scalp Acupuncture. Scalp acupuncture was performed during the operation from the MS1 middle line of forehead [1 cun before Shenting (GV24), including Shenting (GV24)] and MS5 middle line of vertex [from Baihui (DU20) to Qianding (DU21), including Baihui (DU20) and Qianding (DU21)]. The operation time and post-operative length of stay were observed. The midazolam dosage, hemorrhage amount, fluid transfusion amount, urine amount, use rates of ephedrine and atropine during the operation were also observed and compared between the two groups. The occurrence rate of POD and POCD at post-operative day 3 (T₁), week 1 (T₂), month 3 (T₃), and month 6 (T₄) were measured. Eighteen patients were randomly selected to collect blood from internal jugular vein before anesthesia t₀), immediately after ending the surgery (t₁), 6 h after operation (t₂), 24 h after operation (t₃), and 48 h after operation (t₄), respectively. Serum levels of NSE and S-100β were correspondingly measured.</p><p><b>RESULTS</b>There was no statistical difference in the operation time, midazolam dosage used during the operation, hemorrhage amount, fluid transfusion amount, urine amount, use rates of ephedrine and atropine (P > 0.05). Compared with group C, the post-operative length of stay was shortened in group S (P < 0.05). The incidence rate of POD and that of POCD at each time point were lower in group S (P < 0.05). The expression level of NSE decreased at t₂, t3, and t₄, and the expression level of S100β also decreased at t₁, t₂, t₃, and t₄(P < 0.05). There was no statistical difference in expression levels of NSE or S100β between the two groups at other time points (P > 0.05).</p><p><b>CONCLUSION</b>Scalp acupuncture could attenuate central nervous system lesion and improve POCD of elderly patients undergoing hip replacement.</p>

Percutaneous K-wire pry-poking reposition and fixation for O'Brien Ⅱ, Ⅲ pediatric radial neck fracture / 中华骨科杂志

Objective To evaluate the outcome of percutaneous K-wire leverage reduction and fixation for O'Brien Ⅱ,Ⅲ pediatric radial neck fracture.Methods From March 2010 to February 2013,16 children with O'Brien Ⅱ,Ⅲ pediatric radial neck fracture were operated in our hospital.There were 6 females and 10 males aged from 6 to 14 years old.There were 12 left arms and 4 right arms.Concomitant injuries included proximal ulna fractures in 2 cases and medial epicondyle fracture of humerus in 1 case.All children present a swollen and painful elbow with loss of rotation and pain on pronation and supination.The mean visual analogue score (VAS) was 7.9 (range,6.5-9.2).The flextion,extention,pronation and supination of elbow were 78°±3°,-54°±4°,9°±3° and 5°±3° in average.All cases were classified by the O'Brien system,including 9 cases of Ⅱ type and 7 cases of Ⅲ type.Mechanism of injury was fall from a height.The interval between injury and surgery averaged 2.8 days.Percutaneous leverage reduction and fixation were performed for 16 patients.After confirming successful reduction,the wire was advanced to the far cortex of the radius and penetrated into the far cortex to maintain the reduction status.4 weeks of long-arm cast followed by functional exercises were carried out for all patients.We analyzed radiographs and clinical results according to the criteria suggested by Metaizeau.Results 16 patients were followed up for 11.8 month in average after operation.14 patients were gained anatomical reduction.No patient had posterior interosseous nerve injury,fracture redisplacement and pin site infection.All fractures healed in a mean of 4.1 weeks.The follow-up flextion,extention,pronation and supination of elbow were 136°±4°,-2°±2°,81 °±4° and 75°±4° in average.Follow-up radiographs showed no patient had avascular necrosis of radial head.One patient had physeal arrest after 15 months of operation and outpatient follow-up observation were conducted.According to Metaizeau function scale,8 were excellent,7 good and 1 fair.The healing rate was 93.8％ (15/16).Conclusion Percutaneous joystick reduction and fixation technique have good effect for O'Brien Ⅱ,Ⅲ pediatric radial neck fracture,which is simple and easy to master.

Effects of Linggui Bafa on the therapeutic effect and quality of life in patients of post-stroke depression / 中国针灸

<p><b>OBJECTIVE</b>To probe into effects of Linggui Bafa (method for picking eight points linked with extraordinary meridians according to time) on the therapeutic effect and quality of life in patients of post stroke depression.</p><p><b>METHODS</b>One hundred and twenty cases were randomly divided into 3 groups, an observation group 1, an observation group 2 and a control group, 40 cases in each group. All patients were given routine clinical treatments and second level medical prevention. Patients in the observation group 1 received Linggui Bafa acupuncture treatment 2 weeks after stroke; at the same time the observation group 2 was treated with oral administration of Sertraline. The control group did not receive any form of either acupuncture or oral medication, but early rehabilitative intervention and psychological treatment were initiated. Curative effects were evaluated with Hamilton Depression Scale (HAMD), Function Independent Measure (FIM), National Institutes of Health Stroke Scale (NIHSS) and SF-36 after the treatment and 6 months later, respectively.</p><p><b>RESULTS</b>The scores of HAMD, FIM (cognition function) and general health, role-physical, role-emotional, social function, vitality, mental health in SF-36 in the observation group 1 were significantly higher than those in the control group after treatment and 6 months later (P<0.01, P<0.05). The scores of physical function in SF-36 after treatment and NIHSS 6 months later in the observation group 1 were significantly improved than those in the control group (P<0.01, P<0.05). The scores of FIM (cognition function) and role-physical, social function, mental health in SF-36 after treatment and HAMD and general health, social function, mental health in SF-36 6 months later in the observation group 2 were significantly better than those in the control group (P<0.01, P<0.05). The scores of HAMD, FIM (cognition function) and general health, role-emotional, social function, vitality, mental health in SF-36 in the observation group 1 were significantly improved than those in the observation group 2 after treatment and 6 months later (P<0.01, P<0.05). The scores of NIHSS and role-physical in SF-36 in the observation group 1 were significantly higher than those in the observation group 2 6 months later (P<0.05).</p><p><b>CONCLUSION</b>Acupuncture can improve depression symptoms and quality of life of patients with post stroke depression and the effects were better than Sertraline.</p>

Long-term effect of acupuncture on quality of life in patients with early stage of stroke / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To study the long-term effects of acupuncture on quality of life in patients with early stage of stroke.</p><p><b>METHODS</b>Eighty patients were randomly assigned to the acupuncture group and the control group, 40 in each. All received conventional Western medical treatment, but for patients in the acupuncture group, acupuncture was applied additionally immediately from 48 h after patients' life signs were stabilized. Curative effects were evaluated with scores of SF-36, function independent measure (FIM) and NIHSS.</p><p><b>RESULTS</b>Effect evaluated immediately after acupuncture operation showed that all the scores in the acupuncture group, except score of recognition function in FIM, and scores of body pain and physical function in SF-36, were improved more significantly than those in the control group (P < 0.05). The effectiveness improved continuously in the 6-month period after stroke in both groups, but more superiority was shown in the acupuncture group in aspects of emotional function, social function and mental health by SF-36 (P < 0.05).</p><p><b>CONCLUSION</b>Early applying acupuncture could raise the physical, social, and psychological functions of stroke patients. Although the effects might decrease to some extent later, acupuncture still showed markedly effect on patients' psychological and social functions as well as on their life satisfaction.</p>