Objective To explore the effect of spinal decompression system on lumbar disc herniation. Methods 83 patients of lumbar disc herniation were divided into observation group (n=42) and control group (n=41). Both groups received massage therapy, while the observation group was treated with spinal decompression system in addition. The effect was evaluated with Visual Analogue Scale (VAS) and Japanese Orthopedic Association (JOA) assessment of low back pain. Results The VAS score decreased and the JOA score increased in both groups after treatment (P<0.05), and it was better in the observation group than in the control group (P<0.01). Conclusion Spinal decompression system could improve the therapeutic effect on lumbar disc herniation.

Background The vitreoretinal traction plays a critical role in the formation of macular hole and cystoid macular edema.Enzymatic vitreolysis has potential in relieving vitreoretinal traction as a simple and less invasive method in comparison with pars plane vitrectomy.ObjectiveThis study is to investigate the effects of plasmin mutant with kringle domains deficiency(Plm△K)on vitreoretinal interface in new Zealand white rabbits.Methods Plm△K was prepared through activating plasminogen mutant with Kringle domains deficiency (Plg△K) by tissue plasminogen activator (tPA).100μL of Plm△K at the dose of 0.5,1.0 and 1.5μmol/min was injected respectively into the vitreous of 48 New Zealand white rabbits and 16 eyes for each dose.B-scan and optical coherence tomography (OCT) were performed to detect the structure variety at the vitreoretinal interface in 1 day and 7 days after injection.The gross anatomy analysis with triamcinolone acetonide fine particle suspension,as well as histopathological examinations by scanning electron microscopy,was performed in the different time points mentioned above.Results Two peptide chains were determined with the relative molecular weight about 26000 and 5000 by the gel imaging analysis of reduced SDS-PAGE.Separation of the posterior vitreous cortex from retina was found after intravitreous injection under the B-scan and OCT.The ultrastructure change of vitreoretinal interface as well as the examination of fine particle suspension by triamcinolone acetonide demonstrated the same outcome.The degree of remnants of vitreous cortex showed the negative correlation with the dosage of Plm△K (r=-0.9516,P=0.048).No significant correlation was found between the degree of remnants of vitreous cortex and the action time(r=-0.720,P=0.470).There was no obvious morphological difference in outer layer of retina between control eyes and Plm△K-treated eyes.No drug-related adverse event was found after intravitreous injection of Plm△K.Conclusion Intravitreous injection of Plm△K alone can induce complete separation of vitreous from retina.This procedure is safe and effective.

Baculovirus has many advantages as vectors for gene transfer. We demonstrated that recombinant baculovirus vectors expressing p35 (Ac-CMV-p35) and eGFP (Ac-CMV-GFP) could be transduced into human kidney 293 cells efficiently. The level of transgene expression was viral dose dependent and high-level expression of the target gene could be achieved under the heterogonous promoter. MTT assay suggested that both Ac-CMV-p35 and Ac-CMV-GFP did not have cytotoxic effect on human embryo kidney 293 cells. Cell growth curve showed the Ac-CMV-p35 and Ac- CMV-GFP transduced and non-transduced cells had similar proliferation rate, so baculovirus-mediated p35expression had no adverse effect on cell proliferation. In addition, baculovirus-mediated p35 gene expression protected human embryo kidney 293 cells against apoptosis induced by various apoptosis inducers such as Actinomycin D, UV or serum-free media. These results suggested that the baculovirus vector mediated p35 gene expression was functional and it could be widely used in molecular research and even gene therapy.

As one of the serious complications of diabetes, diabetic retinopathy( DR) has become a main eye disease which causes blindness. The occurrence and development of DR is related to many factors. The pathogenesis is complicated, and the mechanism has not been clear. Early data suggest that the occurrence and development of DR has relations with many factors such as blood sugar level, diabetes duration and the environment. Among the factors, mitochondrial dysfunction and oxidative stress is the important mechanisms of DR and has become research focus in recent years. Consequences of mitochondrial dysfunction within cells include elevation of the rate of reactive oxygen species( ROS) production due to damage of electron transport chain proteins, mitochondrial DNA ( mtDNA ) damage, and loss of metabolic capacity. Clear understanding on the mechanism of mitochondrial functional change under high sugar level and oxidative stress response in the occurrence and development of DR is of great significance on prevention and cure of DR. ln this article, the development of mitochondrial metabolism and oxidative stress of DR is reviewed.

Objective To analyze the effect of acromio-humeral interval on the occurrence of subacromial impingement syndrome (SIS) after the clinical application of clavicular hook plate in acromioclavicular joint dislocation (Tossy Ⅲ). Methods From July 2005 to October 2008, 63 cases of acromioclavicular joint dislocation (Tossy Ⅲ) were treated with clavicular hook plate. There were 48 males and 15 females with an average age of 33.6 years (range, 21-53 years). The relationship of the acromio-humeral interval (AHI)were analysed between the two groups by X-ray measurement. The AHI and plate-humeral interval (PHI)were measured on X-ray film to detect difference between the two groups. Results After the operation, all t he 63 cases were divided into two groups according the occurrence of SIS. There were 14 cases in the group of SIS and 49 cases in the group without SIS. The mean follow-up was 12.2 (average, 6-15) months.The average AHI of was (8.5±2.1) mm and (9.7±2.6) mm in the group of SIS and the group without SIS respectively. The difference between the two groups was statistically significant. The average PHI of the group of SIS and the group without SIS was (6.1±2.8) mm and (6.8±2.4) mm respectively. There was no difference between the two groups. After removal of the clavicular hook plate, the clinical sign disappeared in the group of SIS. According the Karlsson scoring system, the excellent and good rate of the shoulder function was 100%. Conclusion The occurrence of SIS after the clinical application of clavicular hook plate has related to the width of the subacromial interval. The syndrome could be treated by the removal of clavicular hook plate.

OBJECTIVE:To synthesize the aryl-pyridazinone acid and curcumin ester. METHODS:With the raw material of 5-methyl-2-(3-chloro-4-fluorophenyl)-2-oxo-pyridazine acid (compound 1) and curcumin,there was ester-forming in the two sides of a phenolic hydroxyl and pyridazin-6-one carboxyl in curcumin by the catalysis of N,N-dicyclohexyl carbodiimide(DCC)/4- dimethylaminopyridine (DMAP). The targeted product,MS and NMR characterization of the structure were obtained through column chromatographic separation. Single factor was adopted to detect the effect of mixture ratio of curcumin and compound 1,re-action temperature and time and catalyst on the reactions. RESULTS:The productivity of targeted product (aryl-pyridazinone acid and curcumin ester)was 56.3%(in curcumin),the content by HPLC was 98.1%. The optimum conditions were as follows as the mixture ratio of curcumin and compound 1 was 1∶3,reaction temperature was 50 ℃,reaction time was 10 h and the catalyst was DCC/DMAP. CONCLUSIONS:The aryl-pyridazinone acid and curcumin ester is successfully synthesized with stable process.

Objective:To explore the clinical efficacy, especially the comprehensive improvement of blood glucose and lipid of probucol and metformin in the treatment of type 2 diabetes mellitus with hyperlipidemia. Methods:Totally 105 patients with type 2 di-abetes mellitus complicated with hyperlipidemia were randomly divided into the control group1 (35 cases), the control group 2 (34 ca-ses) and the observation group (36 cases). The control group 1 was treated with diet control, exercise and metformin, the control group 2 was treated with rosuvastatin calclum tablets based on the group 1, and the observation group was treated with probucol based on the group 1. The three groups were continuously treated for 12 weeks. The improvement of the fasting blood-glucose (FPG), 2h postprandial blood glucose (PBG), hemoglobin A1C (HbA1C), fasting insulin levels (Fins), insulin resistance indices (HOMA-IR) and TC, TG and HDL-C, and the adverse reactions among the three groups were compared. Results:The total effective rate in the ob-servation group was higher than that in the control group 1 and 2 (P<0. 05). After the treatment, all the indices of blood glucose and lipid in the three groups were significantly improved (P<0. 05), and those of blood glucose in the observation were better than those in the control group 1 and 2(P<0. 05), those of blood lipid in the observation group and the control group 2 were better than those in the control group 1 (P<0. 05), and the level of HDL-C in the observation group was much higher than that in the control group 2 (P<0. 05). The adverse drug reactions in the three groups were mild without statistical significance (P>0. 05). Conclusion:Probucol as one of lipid-lowing drugs with antioxidant action combined with metformin can improve blood lipid and lower blood glucose at the same time, which is worthy of promoted application in clinics.

Objective:To evaluate effect of telephone follow-up combined with written instruction on compliance and Helicobacterpylori (H.pylori) eradication in patients with H.pylori infection.Methods:A total of 160 H.pylori positive patients were randomly divided into an experimental group and a control group (n=80 in each group).Ml the patients got the guide instruction named the guidance of clinical medication for H.pylori infection patients before the treatment.The patients in the experimental group were added individualized follow-up with telephone.The compliance,eradication ofH.pylori,adverse events,and satisfaction were compared between the 2 groups.Results:The eradication rate of H.pylori in the perprotocol analysis for the experimental group and control group were 64.4％ (47/73) and 56.5％(35/62),respectively (P=0.380),while in the intention-to-treat analysis,the rates were 58.8％ (47/80) and 43.8％ (35/80,P=0.082),respectively.The compliance rate in the experimental group was significantly higher than that in the control group (91.3％ vs 77.5％,P＜0.05).There was significant difference in patients' satisfaction in good ones (75.3％ vs 51.6％) and poor ones (5.5％ vs 21.0％) between the 2 groups (P＜0.05).There were 11 patients in the experimental group and 36 patients in the control group,who appeared adverse reactions such as nausea,bad breath,abdominal distention,poor appetite,and defecation habit change during the process of eradicating H.pylori,but the occurrence rate in the experimental group was obviously lower than that in the control group (15.1％ vs 58.1％,P＜0.05).Conclusion:The telephone follow-up cannot increase the H.pylori eradication rate,but it can improve compliance and satisfaction for the patients and relieve adverse effects.

Objective To investigate the self-regulation of the autonomic nervous system following the cognitive stress tests after heart rate variability (HRV) biofeedback therapy in patients with post-stroke depression (PSD). Methods From May, 2013 to December, 2015, 48 patients with PSD were randomly divided into feedback group (n=25) and control group (n=23). The feedback group received HRV biofeed-back therapy, while the control group only received relaxation therapy without feedback signal. HRV parameters were tracked during the cognitive stress test in quiet baseline state, cognitive stress state, and resting state before and after treatment. Results Under the stress condi-tion, the low frequency of both groups increased during the first cognitive test, and the rate was higher in the control group than in the feed-back group (P=0.02). The heart rates during the second cognitive test decreased in the feedback group, while increased in the control group (P=0.05). After rest, the heart rate of the feedback group decreased below the baseline (P=0.02). Conclusion During the cognitive stress test, HRV biofeedback therapy can achieve a dynamic balance between sympathetic and parasympathetic nerves by reducing sympathetic sensibility, which improved patients' adaptive capacity to cope with their internal physiological environment and external environmental pressures.

ObjectiveTo study the effect of platelet aggregation rate (PAR) level on the prognosis of percutaneous transluminal coronary angioplasty (PCI).MethodsFour hundred and one patients who performed PCI were divided into 4 groups:group 1 (PAR≤30％,103 cases),group 2 (PAR 31％ - 40％,102 cases),group 3 (PAR 41％ - 49％,103 cases ) and group 4 (PAR ＞ 49％,93 cases ).All the patients were followed up.The survival analysis was performed in 4 groups.ResultsThe data of survival table were tested by 3 methods among 4 groups:statistic was 0.612,degree of freedom was 3,P =0.894 in Log-rank (Mantel-Cox) test,statistic was 0.567,degree 9f freedom was 3,P =0.904 in Wilcoxon test and statistic was 0.586,P =0.900 in Tarone-Ware test.There was no significant difference among them.The mean follow-up duration was 2.2 years,and there was no significant difference in survival function among 4 groups (P ＞0.05).ConclusionPreoperative and postoperative measurement of PAR levels may not improve the prognosis.