Objective To explore the relationship between the genesis of dyskinesia and the degree of substantia nigra lesion in Parkinson disease(PD).Methods The hemi-parkinsonian rat model was established by injecting 6-OHDA stereotaxically to right medial forebrain bundle(MFB). Then the hemi-parkinsonian rat was injected intraperitoneally with levodopa methylester(25 mg?kg~(-1)?d~(-1),twice a day)for 21 days,the abnormal involuntary movements were estimated.After being sacrificed,the midbrain was removed,and the injured degree of dopaminergic neurons at substantia nigra was observed by tyrosine hydroxylase immunohistochemistry staining.The relationship between the abnormal involuntary movement scores and dopaminergic neurons loss at substantia nigra was evaluated by sigmoid equation analysis by using Excel software.Results The apomorphine-induced rotation rate above 7 r/min was found in 10 of 25 rats,those rats were regarded as successful hemi-parkinsonian model rats.After the treatment with levodopa methylester,8 of 10 rats displayed abnormal involuntary movements,including stereotype and contralateral rotation,the types of movements varied.Abnormal involuntary movements were appeared in the rats with dopaminergic neurons loss above 90%.The positive relationship was observed between the degree of lesion in substantia nigra and the severity of abnormal involuntary movements.Conclusions The severe loss of dopaminergic neurons at substantia nigra probably plays a role in the development of levodopa-induced dyskinesia in patient with Parkinson disease.

Objective To investigate cellular and behavioural effects of 5-HT1A receptor agonist 8- OH-DPAT in a rat model of levodopa-induced motor complications.Methods The hemi-parkinsonian rat model was produced by stereotaxically injecting 6-OHDA to right medial forebrain bundle(MFB).Two sets of experiments were performed.First,rats were intrapefitoneally treated with levodopa 50 mg/kg plus benserazide 12.5 mg/kg twice a day for 22 days.On day 23,rats intraperitoneally received either 8-OH- DPAT(1 mg/kg)or 8-OH-DPAT plus WAY-100635(0.1 mg/kg)or dissolvent with each levodopa dose as controls.In the second set,rats were intraperitoneally treated either with levodopa(50 mg/kg)plus 8-OH- DPAT(1 mg/kg)or levodopa 50 mg/kg plus dissolvent,administered twice daily for 22 consecutive days. Rotational duration and frequency of off period were estimated.After sacrificed,subcellualr distribution of GluR1 and GluR1Ser845 phosphorylation was observed by Western blot.Results 8-OH-DPAT,reversing the shortened rotational duration induced by levodopa,prolonged the rotational duration by 27.8%?6.1% and reduced the frequency of failures to levodopa by 7.2%?1.7%.Co-administration of WAY-100635,a 5-HT1A receptor antagonist,with 8-OH-DPAT eliminated the effect of 8-OH-DPAT on motor complications, indicating that the observed 8-OH-DPAT responses were probably mediated via the 5-HT1A autoreceptor. Moreover,8-OH-DPAT could regulate subcellular distribution of GluR1 and reduce hyperphosphorylation of GluR1 Ser845 by 22.1%?3.5%,which was closely associated with levodopa-induced motor complications. Conclusions These results suggest that pharmaceuticals stimulating 5-HT1A receptors could be useful in the treatment and prevention of the motor complications in parkinsonian patients.

OBJECTIVETo evaluate the application of side-to-side anastomosis of the lesser curvature of stomach and jejunum in laparoscopic Roux-en-Y gastric bypass (LRYGB).

METHODSClinical data of 29 patients with type 2 diabetes mellitus (T2DM) undergoing side to side anastomosis of the lesser curvature of stomach and jejunum in LRYGB from May 2012 to November 2012 in Department of General Surgery, Beijing Tiantan Hospital, Capital Medical University were analyzed retrospectively.

RESULTSAll the procedures were successfully completed without conversion to laparotomy. The side-to-side anastomosis of the lesser curvature of stomach and jejunum avoided the laparoscopic suture. No gastrojejunostomy anastomotic bleeding, fistula, obstruction and other complications occurred after operation and no complications of gastrojejunostomy anastomosis were found during a follow up of 1 to 7 months.

CONCLUSIONSSide-to-side anastomosis of the lesser curvature of stomach and jejunum in LRYGB can manipulate the size of anastomosis accurately and avoid the laparoscopic suturing. It is simple and easy to learn.

Adult ; Aged ; Diabetes Mellitus, Type 2 ; surgery ; Female ; Follow-Up Studies ; Gastric Bypass ; methods ; Humans ; Jejunum ; surgery ; Laparoscopy ; methods ; Male ; Middle Aged ; Retrospective Studies ; Stomach ; surgery ; Treatment Outcome

OBJECTIVETo observe clinical effects of posterior short-segment fixation with undermining decompress by posterior ligament complex for the treatment of upper lumbar burst fractures.

METHODSFrom October 2010 to March 2013,23 patients with upper lumbar burst fractures (Denis B type) were treated by posterior short-segment fixation with undermining decompress by posterior ligament complex. There were 18 males and 5 females aged from 26 to 64 years old with an average of 45.7 years old. Twelve patients were caused by falling down, 5 cases were caused by traffic accident, 4 cases were the bruise injury caused by heavy object and 2 cases were caused by other injury. Fourteen patients were L1 fracture and 9 patients were L2 fracture. Thirteen patients were combined with nerve injuries (degree D according to ASIA classification). Internal fixation were removed from 12 to 20 months with an average of 14.3 months. JOA scores and imaging changes were recorded and compared at different time points.

RESULTSAll patients were followed up from 18 to 24 months with an average of 20.4 months. Thirteen patients with nerve injuries were completely recovered at 3 to 6 months after operation. JOA score at 1 year after operation was 20.63 ± 0.92, and 20.38 ± 1.06 at 3 months after removal of internal fixation,which were improved obviously than 9.90 ± 2.73 at 3 months after operation. (P > 0.05) Anterior height of injured vertebrae, vertebral body angle and local Cobb angle was (95.0 ± 0.53)%, (2.78 ± 1.36) and (2.43 ± 1.52) °respectively, and improved obviously than that of before operation (P < 0.05). There was no statistical significance in JOA scores at 3 months after removal of internal fixation and 1 year after operation (P > 0.05).

CONCLUSIONposterior short-segment fixation with undermining decompress by posterior ligament complex for the treatment of upper lumbar burst fractures has advantages of minimally invasive, could effective recover vertebrae height, maintain stability of spine, decrease low back pain. It is a safe and effective operative method.

Adult ; Decompression, Surgical ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Lumbar Vertebrae ; injuries ; Male ; Middle Aged ; Spinal Fractures ; surgery

BACKGROUNDThe clinical failure after prostatic artery embolization (PAE) with conventional particles was relatively high, in treatment for lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH). We reported the results of PAE with combined polyvinyl alcohol particles 50 μm and 100 μm in size as a primary treatment in 24 patients with severe LUTS secondary to large BPH.

METHODSFrom July 2012 to June 2014, we performed PAE in 24 patients (65-85 years, mean 74.5 years) with severe LUTS due to large BPH (≥80 cm 3 ) and refractory to medical therapy. Embolization was performed using combination of 50 μm and 100 μm in particles size. Clinical follow-up was performed using the International Prostate Symptom Score (IPSS), quality of life (QoL), peak urinary flow (Q max ), postvoid residual (PVR) volume, the International Index of Erectile Function (IIEF), prostatic specific antigen (PSA), and prostatic volume measured by magnetic resonance imaging at 1, 3, 6, and every 6-month thereafter. Technical success was defined when PAE was completed in at least one pelvic side. Clinical success was defined as the improvement of both symptoms and QoL. A Student's t-test for paired samples was used.

RESULTSPAE was technically successful in 22 patients (92%). Bilateral PAE was performed in 19 (86%) patients and unilateral in 3 (14%) patients. Follow-up data were available for 22 patients observed for mean of 14 months. The clinical improvement at 1, 3, 6, and 12-month was 91%, 91%, 88%, and 83%, respectively. At 6-month follow-up, the mean IPSS, QoL, PVR, and Q max were from 27 to 8 (P = 0.001), from 4.5 to 2.0 (P = 0.002), from 140.0 ml to 55.0 ml (P = 0.002), and from 6.0 ml/s to 13.0 ml/s (P = 0.001), respectively. The mean prostate volume decreased from 110 cm 3 to 67.0 cm 3 (mean reduction of 39.1%; P = 0.001). The PSA and IIEF improvements after PAE did not differ from pre-PAE significantly. No major adverse events were noted.

CONCLUSIONSThe combination of 50 μm and 100 μm particles for PAE is a safe and effective treatment method for patients with severe LUTS due to large BPH, which further improves the clinical results of PAE.

Aged ; Aged, 80 and over ; Angiography ; Embolization, Therapeutic ; methods ; Humans ; Lower Urinary Tract Symptoms ; etiology ; metabolism ; therapy ; Male ; Prostate ; pathology ; Prostate-Specific Antigen ; metabolism ; Prostatic Hyperplasia ; complications ; metabolism ; therapy ; Treatment Outcome

To study the synthetic method and antibacterial activity of water-soluble fused heterocyclic compounds containing piperazine group, the nucleophilic substitution of 3-(4-chlorophenyl)-6-substituted-s-triazolo-[3, 4-b] [1, 3, 4] thiadiazoles (2a - n) with piperazine in the presence of phase transfer catalyst TBAI afforded 3-(4-piperazin-1-yl-phenyl)-6-substituted-s-triazolo [3, 4-b] [1, 3, 4] thiadiazole and then followed by acid treatment afforded 3-(4-piperazin-1-yl-phenyl)-6-substituted-s-triazolo [ 3, 4-b] [1, 3, 4] thiadiazole hydrochlorides (3a - n). Twenty-eight new compounds were synthesized and their structures were confirmed by IR, 1H NMR, MS and element analysis. The in vitro antibacterial activities of all newly synthesized compounds were tested against Gram positive bacteria and Gram negative bacteria with the standard 2-fold agar dilution method. Fourteen title compounds exhibited potential antibacterial activities in vitro. The structures of these compounds needed to be further optimized.
Anti-Bacterial Agents ; chemical synthesis ; chemistry ; pharmacology ; Bacillus subtilis ; drug effects ; Escherichia coli ; drug effects ; Microbial Sensitivity Tests ; Molecular Structure ; Pseudomonas aeruginosa ; drug effects ; Staphylococcus aureus ; drug effects ; Structure-Activity Relationship ; Thiadiazoles ; chemical synthesis ; chemistry ; pharmacology ; Triazoles ; chemical synthesis ; chemistry ; pharmacology

Objective To observe the influence of dexmedetomidine applied in combined acupuncture-medication anesthesia on vomiting after thyroidectomy. Method Seventy patients who were going to receive thyroidectomy were randomized into group A and B, with 35 cases in each group. Combined acupuncture-medication anesthesia [electroacupuncture at Hegu (LI4), Neiguan (PC6) and Futu (ST32) plus intravenous infusions of sufentanil citrate injection (0.3 mg/kg) 20 minutes before operation]was adopted in both groups. Group A was additionally intervened by constantvelocity micropump infusion of dexmedetomidine hydrochloride injection (0.5 mg/kg) within 10 minutes before operation and remaining 0.4 mg/kg/min during operation, while group B was intervened by infusion of normal saline 10 minutes before operation. The observer's assessment of awareness/sedation (OAA/S) scores at different time points[lying in bed for 5 minutes before operation (T0), before the beginning of the operation (T1), 30 minutes after operation (T2), 60 minutes after operation (T3) and at the end of operation (T4)] in the two groups were observed. The additional times and total dose of sufentanil during operation, the number of cases using esmolol and urapidil, and the number of vomiting cases occurred within 2 hours after operation and 2～24 hours after operation in the two groups were recorded.Result The additional times and total dose of sufentanil during operation in group A were significantly different from those in group B (P<0.01). The utilization rate of esmolol and urapidil were respectively 31.4％ and 14.3％ in group A versus 77.1％ and 65.7％ in group B, and the between-group differences were statistically significant (P<0.01). The incidence of vomiting within 2 hours after operation and 2～24 hours after operation were respectively 20.0％ and 17.1％in group A versus 54.3％ and 42.9％ in group B, and the between-group differences were statistically significant (P<0.01). The OAA/S scores at different time points (T1, T2, T3 and T4) in group A were significantly different from those in group B (P<0.01). Conclusion Dexmedetomidine applied in combined acupuncture-medication anesthesia can reduce the additional times and total dose of sufentanil during thyroidectomy, and it can reduce the incidence of postoperative vomiting as well.

Cardiac Catheterization ; Heart Septal Defects, Ventricular ; therapy ; Humans ; Prosthesis Implantation ; instrumentation ; Septal Occluder Device

Objective To investigate the possible molecular mechanism for alpha(α)-mangostin's inhibition of the proliferation and apoptosis of human gastric cancer cells.Methods Human gastric adenocarcinoma SGC7901 cell line was treated with α-mangostin.CCK8 method was used to measure the viability of SGC7901 cells.The effect of α-mangostin on apoptosis and cell cycle was determined by immune fluorescence and flow cytometry.The expression of the relevant proteins was detected using Western blot.The shapiro-wilk test was performed for evaluation of deviation from normality.Normally distributed data was analyzed with one-way ANOVA.Welch test was used in data with heterogeneity of variance and multiple compared by Games-Howell test after that.Results CCK8 results showed that cell viability differed significantly among groups treated with different concentrations of α-mangostin(10,15,20,25,and 30 μmol/L)(P＜0.05).QPCR data showed that the concentration of α-mangostin was positively correlated with mRNA level of LC 3 but not caspase protein(r=0.976,P＜0.05).In 15 μmol/L but not 10 μmol/L α-mangostin treatment system,the autophagy inhibitors 3-MA(10 μmol/L),bafilomycin A(10 μmol/L)and LY294002(10 μmol/L)could significantly alleviate α-mangostin's killing effect on SGC7901 cells(P＜0.05).Conclusion The anti-tumor effects of α-mangostin against human gastric adenocarcinoma cells in vitro can be partly attributed to apoptosis,autophagy and arresting cell phase.

Objective To evaluate the role of late course accelerated fractions.ted irradiation(LCAF) combined with concurrent chemotherapy in the management of esophageal carcinoma.Methods From March 1998 to July 2000,111 eligible patients were randomized into LCAF alone group(LCAF,57 patients)or LCAF plus concurrent chemotherapy group(LACF-CT,54 patients).The radiotherapy regimen was identical in the two groups,consisting of conventional fractionation in the first 2/3 course and accelerated fractionation in the second 1/ 3 course to a total dose of 68.4 Gy/41 Fx/44 d.Chemotherapy regimen consisted of four eycles of cisplatin 25 mg/ (m~2?d)plus fluorouracil 600 mg/(m~2?d)on day 1 to 3 every 4 weeks and was delivered on the first day of radiotherapy.Results The median follow-up time was 67.1 months(range 47.6-76.4 months).The 1-,3-,5- year survival rate was 67%,44% ,40% and 77%,39% 28% in LACF-CF and LEAF group,respectively(P =0.310).Grade 3+4 acute side-effact was 42% and 25% in LCAF-CT and LCAF group,respectively(P＜0. 05),with 3 treatment-related deaths in the LCAF-CT group.Conclusions Late course accelerated fractionated irradiation combined with concurrent chemotherapy has a trend towards improving the survival,at the cost of increasing acute side-effect.Its role needs further confirmation by larger sample studied in randomization.