Objective To observe the effect of alpha lipoic acid on quality of life in patients with type 2 diabetic peripheral neuropathy.Methods 76 cases diagnosed with type 2 diabetic peripheral neuropathy,in accordance with the random number table,were divided into the control group (37cases)and treatment group (39cases).All the patients received diabetic diet,exercise guidance and blood glucose control.The control group was treated with methy-cobal 500μg muscle injection once a day for 2 weeks.The treatment group was treated besides above treatment with intravenous drip alpha lipoic acid 600mg once a day was added for 2 weeks.Then,the changes of motor nerve conduc-tion velocity,sensory nerve conduction velocity and quality of life (QoL)score (somatic symptoms,cognitive func-tion,health happy feeling,social participation,emotional state,work performance,life satisfaction and total score)of the two groups after treatment were observed.Results After treatment,the motor nerve conduction velocity of the control group were as follows:median nerve (40.7 ±4.5)cm/s,common peroneal nerves (41.3 ±4.9)cm/s,The sensory nerve conduction velocity of the control group were as follows:median nerve (38.6 ±4.3)cm/s,common per-oneal nerves (38.3 ±4.5)cm/s.After treatment,the motor nerve conduction velocity of the treatment group were as follows:Median nerve (45.4 ±5.7)cm/s,common peroneal nerves (44.9 ±6.4)cm/s,The sensory nerve conduction velocity of the treatment group were as follows:Median nerve (45.0 ±2.0)cm/s,common peroneal nerves (43.6 ± 3.2)cm/s.Both the two groups′motor nerve conduction velocity and sensory nerve conduction velocity were significantly increased after treatment (P <0.05).Compared with control group,the motor nerve conduction velocity and sensory nerve conduction velocity in the treatment group were significantly improved after treatment,which had statistically significance,(t =2.63,2.51,2.85,2.79,all P <0.05).After treatment,the somatic symptoms,cognitive function,health happy feeling,job performance,social participation,emotional state,life satisfaction and the total score of control group were (52.4 ±9.6)points,(27.0 ±7.8)points,(35.7 ±10.3)points,(19.6 ±7.3)points,(17.4 ± 3.1)points,(16.5 ±3.9)points,(185.4 ±40.7)points,respectively.After treatment,the somatic symptoms,cogni-tive function,health happy feeling,job performance,social participation,emotional state,life satisfaction and total score of treatment group were (41.9 ±7.4)points,(24.1 ±8.6)points,(28.3 ±9.2)points,(14.5 ±5.5)points, (12.6 ±5.6)points,(11.9 ±4.7)points,(135.0 ±38.7)points,respectively.The quality of life score of the treat-ment group was obviously lower than the control group,which had statistically significance,(t =5.14,2.54,2.96, 2.87,2.69,3.05,6.25,all P <0.05).Conclusion Alpha lipoic acid can improve the nerve conduction function of patients with type 2 diabetes peripheral neuropathy,and improve the quality of life.

Objective To investigate the diagnostic value of JAK2V617F mutation detection in the diagnosis of polycythemia vera,and screen a more simple method for clinic laboratory to detect the mutation of JAK2V617F.Method DNA was extracted by standard procedures after isolating total leukocytes from peripheral blood mononuclear cells by density gradient centrifugation over Histopaque 1077.DNA samples were amplified,and single-stranded biotinylated PCR products were prepared for sequencing.At the same time,in order to testify the reliability of the allele-specific PCR,two forward primer and one common reverse primers were applied for identifying the mutation.Result In 32 of 38 patients with polycythemia vera,JAK2V617F mutation was determined by conventional DNA sequencing.35 JAK2V617F mutations were detected by the allele-specific PCR.and these mutations were confirmed by DNA sequencing.None mutation was found in secondary polycythemia and normal control.Conclusion JAK2V617F function mutation occuis in nearly all patients with PV,and JAK2V617F mutation should be a molecular marker in the diagnosis of polycythemia vera.Allele-specific PCR is a very sensitive and specific method for detecting JAK2V617F mutation.

In order to study event-related desynchronization (ERD) related to voluntary movement, we designed two experiments. In the first experiment, untrained subjects were required to imagine the action of typing with left or right index finger for about 1 second before real action, whereas they were required to type instantly after instruction in the second experiment. By analyzing spontaneous EEG signals between the instruction and the action, we predicted which finger was used. The prediction accuracy in the first experiment fell from 85% to 71% with the progress of experiment, the average accuracy being 78%, whereas the prediction result was almost random guess in the second experiment. The results demonstrate that (1) ERD patterns are significantly affected by the effective duration of motion imagination, (2) unconscious reduction of this duration can decrease the prediction accuracy. Therefore, when designing subsequent BCI experiments, we should devote our attention to the question of how to keep the effective duration of motion imagination.
Brain ; physiology ; Cortical Synchronization ; Electroencephalography ; Humans ; Man-Machine Systems ; Task Performance and Analysis ; User-Computer Interface

Objective To investigate the clinical characteristics,treatment effect,long-term follow up results,guanosine triphosphate (GTP) cyrclohydrolase Ⅰ (GCH Ⅰ)gene and tyrosine hydroxylase(TH) gene mutations in patients with dopa-responsive dystonia (DRD).Methods The clinical features of 3 families with 4 affected members were analyzed and all of 4 patients were screened for mutations of the GCH Ⅰ gene and TH gene with DNA sequences.Results Four patients were females,average age at onset was (15.3 ± 5.6) years (range:from 9 to 20 years).The initial symptoms were a gait disorder,stiffness or tremor of the lower limbs in all patients presented with diurnal fluctuation.As the increase of disease duration,bilateral hand tremor was found in three patients,systemic torsion was found in one patient and torticollis was found in one patient.All patients' symptoms were in complete remission after administration of low dose of levodopa.Four patients were followed up for 0.5 to 10.0 years,and all were still responsive to the levodopa treatment and effective dosage was decreased as the increase of the disease duration.No longterm side effects of levodopa had occurred after long-term treatment.One patient was found to have c.607G ＞A(p,Gly203Arg) heterogenetic mutation in GCH I gene.Molecular analysis revealed a compound heterozygous mutation in the TH gene (p.Y447Ter and p.V468M) in one patient.No point mutations in both genes were found in other patients.Conclusions DRD patients have dramatic and sustained response to levodopa and no long-term side effects of levodopa after long-term treatment.The detection of GCH Ⅰ and TH gene mutations is helpful in early diagnosis but the negative results could not exclude the diagnosis of DRD.

Objective To investigate α-interferon (α-IFN) and cyclooxygenase-2 (COX-2)inhibitor celecoxib synergistically inhibit the growth of human liver cancer SMMC-7721 cells xenografts and tumor angiogenesis in a nude mouse model.Methods The effects of celecoxib and α-interferon on tumor volumes and weight were observed.The expressions of VEGF and Cox-2 were determined by immunohistochemistry and RT-PCR,and the effect of α-interferon on MVD also was observed by immunohisto chemistry.Results During the period of observation tumor volume increased progressively in control group,while it was suppressed obviously in other drug treatment groups.The average tumor volume was significantly smaller in celecoxib + α-IFN group than that in IFN group,celecoxib group and control group (P ＜ 0.01,respectively),its inhibitory rate was 61.84％.Immunohistochemistry showes that the VEGF and MVD was significantly smaller in celecoxib + IFN group than that in α-IFN group,celecoxib group and control group (P ＜ 0.01,respectively).RT-PCR shows that the COX-2mRNA and VEGF mRNA pression was lower in the celecoxib + α-IFN group than in α-IFN group,celecoxib group and control group (P ＜ 0.01).Conclusions The COX-2 inhibitor celecoxib and α-interferon synergistically reduces xenografts growth of human liver cancer SMMC-7721 cells effectively via suppressing tumor growth and angiogenesis.

Objective To discuss the safety and effectiveness of the drainage of perinephric abscess with retroperitoneal laparoscopy.Methods The clinical data of 12 cases undergoing the drainage of perinephric abscess with retroperitoneal laparoscopy were analyzed retrospectively.There were 3 males and 9 females,with a mean age of 47 years.All the 12 cases presented with lumbar pain and fever,7 cases had chill,5 cases had irritative symptom of bladder,and 4 cases had nausea and vomiting.The average course was 9 d,and the average diameter was 6.4 cm.Four cases were in the left side,and 8 in the right side.The main complications included type-2 diabetes (5 cases),type-1 diabetes (1 case),kidney stones (2 cases) and systemic lupus erythematosus (1 case).All the 12 cases were treated with antibiotics.The indexes were recorded,including operative time,intraoperative blood loss,purulent fluid volume,postoperative indwelling time of the drainage tube,postoperative time of body temperature returned to normal,postoperative hospital stay,and complication rate.Results All the 12 operations were successful without peritoneal damage,kidney damage or other complications.The mean operative time was 56 (48-95) min,the mean intraoperative blood loss was 127 (60-150) ml,the mean intraoperative purulent fluid volume drawed out was 128 (120-230) ml,the mean postoperative indwelling time of the drainage tube was 9 (6-12) d,the mean postoperative time of body temperature returned to normal was 3 (2-4) d,and the mean postoperative hospital stay was 10 (7-12) d.All the patients were followed up for an average of 6.5 (6-12) months,no recurrence occured.Conclusions The drainage of perinephric abscess with retroperitoneal laparoscopy has the advantages of definite effectiveness,complete drainage,little injury and rapid recovery.The drainage of perinephric abscess with retroperitoneal laparoscopy by skilled urologists is safe.

Objective To determine the methylation level of P15INK4B gene promoter in different types of myelodysplastic syndromes (MDS) and its correlation with its prognosis.Methods Methylation frequency of the P15INK4B gene promoter in 44 cases of MDS were determined by methylation-specific polymerase chain reaction (PCR) and pyrosequencing,and its correlation with clinical classification and characteristics of MDS were statistically analyzed.Results Frequency of P15INK4B gene promoter methylation in myelodysplastic syndromes-refractory anemia with excess blasts Ⅱ (MDS-RAEB Ⅱ) patients was (46.89 ± 15.41) ％,significandy higher than that in other types of MDS (P ＜ 0.05),but no difference in promoter methylation frequency was detected among the other types of MDS (P ＞ 0.05) ; frequency of P15INK4B gene promoter methylation was found to be correlated with decline in platelet upon diagnosis (t =9.02,P ＜ 0.01),but showed no significant correlation with drop of hemoglobin or leukopenia (P ＞0.05).As for the correlation between P15INK4B gene promoter methylation and MDS risk stratification,no significant difference was detected between the low-risk and very low-risk groups (P ＞ 0.05),but significant differences were detected among the medium-risk,high-risk,and very high-risk groups (P ＜ 0.05).In addition,frequency of P15INK4B gene promoter methylation was (49.21 ± 8.78)％ in MDS patients that developed leukemia in the following two year,significantly higher than that in MDS patients who didn't (19.64 ± 6.24) ％ (P ＜ 0.05).Conclusions P15INK4B gene promoter methylation frequency is a valuable indicator of prognosis of MDS patients.

Objective To assess the application effect of the catheter management software on the management of Indwelling urinary catheter in the Emergency intensive care unit (EICU). Methods A prospective control study of targeted surveillance of catheter-associated urinary tract infection was conducted from January 2014 to December 2015 in EICU. The patients were divided into two groups. The patients in control group (131 patients) were treated from January 1, 2014 to December 31, 2014 and received routine catheter management, and the patients in test group (135 patients) were treated from January 1, 2015 to December 31, 2015, and received catheter management by software. The catheter management software was developed and applied, and the process specification which collaborated with the software was established. The quality of the catheter management including the omission rate of the catheter management, the rate of urinary catheter-associated urinary tract infections (CAUTI) and the rate of catheter used etc were evaluated after the software's application. Results Through software applications, the omission rate of the catheter management, the omission rate of urine drainage bag replacementand the omission rate of urinary catheter replacement in test group were significantly lower than those in control group:0 vs. 36.64%(48/131), 0 vs. 15.27%(20/131) and 0 vs. 9.92%(13/131), P<0.01 or<0.05. The performance rate of catheter daily management in test group was significantly higher than that in control group: 99.26%(134/135) vs. 64.12%(84/131), P<0.01. The rate of CAUTI in test group was significantly lower than that in control group: 1.90‰ vs. 9.16‰, χ2=4.843, P=0.028. The rate of catheter used in test group was significantly lower than that in control group: 60.74%(82/135) vs. 73.28%(96/131), P<0.01. Conclusions The development and the establishment of the management software can improve the rate of implement, and declinethe rate of CAUTI.

Objective To discuss the safety and efficacy of inserting ureterovesical reimplantation by means of laparoscopy associated with six-stitch suture.Methods There was an retrospective analysis on operation videos and clinical data for 16 participants of inserting ureterovesical reimplantation by means of laparoscopy associated with six-stitch suture with the period from March in 2012 to September in 2015. And these were statistically analyzed including the operation time, intraoperative bleeding volume, postoperative drainage volume, removal time of drainage tube, admission time after operation and the incidence of postoperative complications of vesicoureteric reflux and stenosis.Results The operations of 16 participants were completed successfully without converting to open surgery. The operation time was 60 ~ 125 min (Mean time: 85 min); intraoperative bleeding volume was 20 ~ 50 ml (Mean volume: 32 ml); postoperative drainage volume was 60 ~ 400 ml (Mean volume: 106 ml); removal time of drainage tube was 3 ~ 6 d (Mean time: 4.2 d) and admission time after operation was 7 ~ 10 d (Mean time: 8.5 d). There was the follow-up with 6 ~ 18 months (Mean time: 12 months) for participants. No anastomotic stenosis was present. In addition, one participant was suffered from mild vesicoureteric relfux. And there was no aggravation during 18 months.Conclusions The inserting ureterovesical reimplantation by means of laparoscopy associated with six-stitch suture was safe and effective. It was found that the operation time was significantly shortened and the incidence of postoperative complications of vesicoureteric relfux and anastomotic stenosis was not increased. By contrast, the six-stitch suture could reduce the incidence of anastomotic stenosis.

[Abstrict]Objective To explore the key points and clinical value of combined direct and indirect extracranial-in?tracranial (EC-IC) bypass in patients with adult moyamoya disease. Methods Retrospective analysis of combined revas?cularization surgery in 25 adult patients with moyamoya disease. The frontal branch and parietal branch of the superficial temporal artery (STA) were dissected. Combined revascularization surgery consisted of direct (anastomosis between the su?perficial temporal artery and cortical branch of the middle cerebral artery) and indirect (encephalodurogaleosynan-giosis EDAS) surgeries. Clinical status was evaluated using the modified Rankin Scale and NIHSS score at 1 day before, 1 week and 3 months after surgery. Results Thirty lateralities were successfully performed on 25 patients. Postoperative angiogra?phy or CTA and cranial computer tomography perfusion imaging(CTP) were conducted to examine the patency of the di?rect anastomosis and cerebral blood flow in 23 patientswithin 1 weeks after surgery . The results showed that the anasto?motic vascular patency was excellent and the cerebral blood flow increased in parallel to the relief of the patients’s isch?emic symptoms. The median mRS scores were 3 (1,3) before surgery, 2 (1,3) 1 week and 1 (0,3) 1 month after surgery.The median mRS scores were significantly improved (Z=15.14, P<0.01). The median NIHSS scores was 5 (4,8) preopera?tively and 4(2,7) postoperation 1 week and 3(1,4) 3 months. The median NIHSS scores were also significantly improved (Z=11.36, P<0.01). Unfortunately, two patients had complication and left hemiparesis. One patient complicated with con?tralateral hemisphere infarction and the another one complicated with ipsilateral hemispheric hemorrhage after operation. Conclusions Combined revascularization surgery may result in satisfying improvement in clinical, angiographic, and he?modynamic states and prevention of recurrent stroke. The stabilized hemodynamic is the key point in peroperative period for moyamoya patients.