Preparation and in vitro evaluation of polylactic acid nanoparticles containing arginine and glucose oxidase / 药学学报

Hydrogen peroxide (H2O2) and nitric oxide (NO) has a short half-life, low bioavailability, poor tumor targeting and systemic adverse reactions in the physiological environment. In this study, phacoemulsification and nano-precipitation were used to synthesize didecyl dimethyl ammonium bromide (DDAB)/polylactic acid nanoparticles (PLA), then L-arginine (L-Arg) and glucose oxidase (GOx)-loaded nanoparticles (GADP) were prepared, and the in vitro antitumor activity was investigated．The particle size, potential, embedding rate and the ability to produce H2O2/NO of the nanoparticles were investigated. Meanwhile, in vitro cell cytotoxicity against human hepatoma cells (HepG2) was evaluated．The results showed that the prepared L-Arg-DDAB/PLA (ADP) nanoparticles were spherical particles. And the particle size and zeta potential were (225.7 ± 6.33) nm and (+23.5 ± 0.12) mV, respectively. The adsorption rate of GOx was 87.23% ± 0.02%. The drug loading of L-Arg was 15.6% ± 0.22%. The pH value of glucose solution and the amount of H2O2 showed that GADP had good catalytic activity. In vitro cytotoxicity experiments showed that blank nanoparticles were nontoxic, while the drug-loaded nanoparticles presented enhanced antitumor effect on HepG2 cells. And can inhibit tumor cell migration. The low dose nano-scale NO delivery system GADP can effectively inhibit the migration of tumor cells and kill tumor cells, thus producing therapeutic benefits.

Effects of Human Postures on Flow Characteristics in Iliac Vein Compression Syndrome / 医用生物力学

Objective To investigate effects of human postures on flow characteristics of iliac vein compression syndrome. Methods The numerical model of iliac vein was reconstructed from CT images of a typical patient with pelvic-type iliac vein compression syndrome with collateral veins. Based on the computational fluid dynamics method, the non-Newtonian model and the porous media model were adopted to describe effects of abnormal structures on blood flow and acquire the wall shear stress and pressure of iliac vein. The discrete phase model was used to study the residence conditions of erythrocytes under three human postures. Results The pressure gradient at two ends of the compressive region was lowest under lying state, while the iliac vein showed a high pressure under sitting and walking states. The local maximum wall shear stresses under three postures were found at narrow segment of the collateral vein and convergence region of two flows of right iliac vein. The maximum shear stress was largest under lying state and smallest under sitting state. The blood residence time of 52.2 s in the left iliac vein was the longest under sitting state. The residence time of 14.8 s was shortest under lying state. The blood residence time was 23.8 s under walking state. Conclusions Porous media model used to simulate the effect of abnormal structures was highly consistent with the angiography data. The venous hypertension under sitting and walking states was consistent with the clinical results, and the lying state could relieve the hypertensive condition. In terms of wall shear stress and blood residence time in iliac vein, the continual change between three human postures would cause endothelial damage and blood flow stasis alternately, thus increase the risk of thrombosis.

Cost-Effectiveness Analysis of Combined Chemotherapy Regimen Containing Bedaquiline in the Treatment of Multidrug-Resistant Tuberculosis in China / 生物医学与环境科学（英文）

OBJECTIVE@#This study aims to estimate the cost-effectiveness of the combined chemotherapy regimen containing Bedaquiline (BR) and the conventional treatment regimen (CR, not containing Bedaquiline) for the treatment of adults with multidrug-resistant tuberculosis (MDR-TB) in China.@*METHODS@#A combination of a decision tree and a Markov model was developed to estimate the cost and effects of MDR patients in BR and CR within ten years. The model parameter data were synthesized from the literature, the national TB surveillance information system, and consultation with experts. The incremental cost-effectiveness ratio (ICER) of BR vs. CR was determined.@*RESULTS@#BR ( vs. CR) had a higher sputum culture conversion rate and cure rate and prevented many premature deaths (decreased by 12.8%), thereby obtaining more quality-adjusted life years (QALYs) (increased by 2.31 years). The per capita cost in BR was as high as 138,000 yuan, roughly double that of CR. The ICER for BR was 33,700 yuan/QALY, which was lower than China's 1× per capita Gross Domestic Product (GDP) in 2020 (72,400 yuan).@*CONCLUSION@#BR is shown to be cost effective. When the unit price of Bedaquiline reaches or falls below 57.21 yuan per unit, BR is expected to be the dominant strategy in China over CR.

Effect of low-dose esketamine on postoperative delirium in elderly frail patients undergoing laparoscopic radical resection of gastrointestinal tumor / 中华麻醉学杂志

Objective:To evaluate the effect of low-dose esketamine on postoperative delirium (POD) in elderly frail patients undergoing laparoscopic radical resection of the gastrointestinal tumor.Methods:Ninety-four American Society of Anesthesiologists physical status Ⅱ or Ⅲ frail patients of both sexes, aged 65-80 yr, with body mass index of 18.5-30.0 kg/m 2 and preoperative Fried frailty phenotype scale score≥3, scheduled for elective laparoscopic radical resection of the gastrointestinal tumor under general anesthesia, were divided into 2 groups ( n=47 each) using a random number table method: control group (group C) and low-dose esketamine group (group K). In group K, esketamine 0.5 mg/kg was given during induction of anesthesia, and esketamine 0.25 mg·kg -1·h -1 was continuously infused during operation until the end of operation.In group C, the equal volume of normal saline was given at the corresponding time point.After induction of anesthesia and before skin incision (T 1), at 1 day after operation (T 2) and at 3 days after operation (T 3), blood samples from the internal jugular vein were collected for determination of the concentrations of S100β protein and neuron-specific enolase (NSE) in serum by enzyme-linked immunosorbent assay.The intraoperative consumption of propofol, remifentanil and sufentanil and use of vasoactive drugs were recorded.POD was evaluated by Confusion Assessment Method within 3 days after operation. Results:Compared with the baseline at T 1, the concentrations of serum S100β and NSE were significantly increased at T 2, 3 in both groups ( P<0.05). Compared with group C, the incidence of POD was significantly decreased (30% vs.13%), the intraoperative consumption of propofol and remifentanil was decreased, and concentrations of serum S100β protein and NSE were decreased at T 2, 3 in group K ( P<0.05). Conclusions:Low-dose esketamine can decrease the occurrence of POD in elderly frail patients undergoing laparoscopic radical resection of gastrointestinal tumor.

Effect of nimodipine on postoperative cognitive function in elderly patients undergoing carotid endarterectomy / 中华麻醉学杂志

Objective:To evaluate the effect of nimodipine on postoperative cognitive function in elderly patients undergoing carotid endarterectomy.Methods:Eighty-two American Society of Anesthesiologists physical status Ⅱ or Ⅲ patients of both sexes, aged 65-80 yr, scheduled for elective carotid endarterectomy under general anesthesia, were divided into 2 groups ( n=41 each) using a random number table method: control group (group C) and nimodipine group (group N). Nimodipine 7.5 μg·kg -1·h -1 was intravenously infused starting from the beginning of surgery until the end of surgery in group N, while the equal volume of normal saline was given in group C. Before infusing nimodipine (T 1), before placing the the shunt (T 2), at 10 min after placing the the shunt (T 3) and at 10 min after releasing carotid artery (T 4), blood samples were taken from the radial artery and jugular bulb for blood gas analysis.Jugular venous blood oxygen content, arterio-jugular difference of oxygen content, and cerebral oxygen extraction ratio were calculated.The concentrations of S100β protein in serum of the jugular bulb were measured by enzyme-linked immunosorbent assay.Cognitive function was assessed using the Montreal Cognitive Assessment (MoCA) Scale (Chinese version) at 1 day before surgery and 1, 3 and 7 days after surgery, and the occurrence of cognitive dysfunction (MoCA score<26) was recorded within 7 days after operation. Results:Compared with group C, MoCA scores were significantly increased at each time point after surgery, and the incidence of cognitive dysfunction was decreased (27% vs.17%), and the jugular venous blood oxygen content was increased, and arterio-jugular difference of oxygen content, cerebral oxygen extraction ratio, and concentrations of serum S100β protein were decreased at T 2-4 in group N ( P<0.05). Conclusions:Nimodipine can improve the cognitive function after carotid endarterectomy, which may be related to the improvement in intraoperative cerebral oxygen metabolism and reduction of brain injury in elderly patients.

Effect of Erjingwan on Hippocampal Proteomics in AD Rats with Kidney Yin Deficiency Induced by Ovariectomy+ D-Galactose Combined with Aβ1-40 / 中国实验方剂学杂志

Objective::To explore the effect of Erjingwan on the biological basis of kidney yin deficiency Alzheimer' s disease(AD)rats induced by ovariectomy+ D-galactose combined with amyloid beta1-40 (Aβ1-40). Method::After ovariectomy, rats were randomly divided into five groups: model group, positive group, Erjingwan high, medium and low dose group, 11 rats in each group, and 11 rats in sham operation group. One week after operation, D-galactose was injected intraperitoneally for 7 weeks, and four weeks after operation, Aβ1-40 was injected unilaterally into hippocampus. The rats in model group and sham-operation group were given saline by intragastric administration 3 weeks after operation. The rats in high, middle and low dose groups of Erjingwan were given corresponding concentration (9.0, 4.5, 2.25 g·kg-1). The rats in positive control group were given Donepezil 1.0 mg·kg-1 with dosage of 10 mL·kg-1 once a day for 35 consecutive days. After 30 days of administration, the learning ability of the rats were examined using a Y-maze. The hippocampus tissues of rats were isolated. The morphology of hippocampus was observed by Nissl staining.The proteins were detected by Nanol-ESI liquid-mass spectrometry system and identified by protein Discovery software. Relative quantitative and qualitative analysis of differential proteins in hippocampus was performed by SIEVE software, and Gene Ontology of differential protein was performed by PANTHER Classification System database. String analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment were performed on the differential proteins. Result::Compared with model group, the correct rate of Y maze in the high and middle dose groups of Erjingwan was significantly raised(P<0.05), and the number of neurons in the hippocampal CA1 area was significantly increased(P<0.01).115 differential proteins (Ratio>1.5 or Ratio<0.5) such as Insulin-like growth factor 1 receptors(IGF-1R) were found in the high-dose group of the Erjingwan group as well as 94 differential proteins such as Synaptophysin expressed in the middle-dose group of the Erjingwan. And there are 87 differential proteins such as Acetyl-CoA acetyltransferase-cytosolic in the positive drug group. It showed that these proteins were mainly divided into tubule-related proteins, heat shock proteins, energy metabolism-related proteins and AD-related proteins with GO analysis. It was found that the above differential proteins involved 93 signaling pathways such as Dopaminergic synaps by KEGG analysis. Conclusion::Erjingwan can improve cognitive impairment and neuronal damage in rats with kidney yin deficiency, possibly by altering the expression of multiple pathway-associated proteins such as phosphatidylinositol 3-kinase/protein kinase B signaling pathway(PI3K/Akt), insulin signaling pathway, and adenylate-activated protein kinase (AMPK)signaling pathway, estrogen signaling pathway, and Dopaminergic synapse.

Effects of ellagic acid on inflammation and oxidative stress induced by AKT gene transfection in mice with fatty liver disease / 中国中药杂志

To study the effects of ellagic acid(EA)on inflammation and oxidative stress in mice with fatty liver disease induced by AKT gene transfection,the 20 female FVB mice were randomly divided into normal control group,model group and ellagic acid administration group(150,300 mg·kg~(-1)·d~(-1))(n=5).EA experimental groups and model group were using a high pressure into the tail vein transfection plasmid AKT.The next day,EA was started to administered continuously for 5 weeks after the AKT gene transfection,while the model group and the normal control group were given the same amount of saline.After the administration,the liver tissue and serum of mice were taken.HE and oil red O staining were using to observe the histopathological changes in liver;liver function to detect the serum and liver tissue as well as MDA and SOD levels;real-time quantitative PCR(RT-qPCR)was used to measure the mR-NA expression of NF-κB and TNF-α;Western blot and immunohistochemistry were used to measure the expression of NF-κB,TNF-αand COX-2 in liver tissue.RESULTS:: show that after AKT gene transfection,the model group had significant increase in the serum levels of AST,ALT,elevated the levels of MDA and decreased the levels of SOD in serum and liver tissue,aggravated histopathology degeneration and Liver inflammation,and significantly higher expression of NF-κB,TNF-α,IL-6,COX-2 and other inflammatory-related factors in liver tissue.EA administration group significant reductions in the serum levels of AST,ALT,and improved in hepatocyte fatty degeneration and liver inflammation,lower the levels of MDA and increased the levels of SOD in serum and liver tissue,and significant reductions in the expression of NF-κB,TNF-α,IL-6 and COX-2 in liver tissue.These results suggest that EA has obvious anti-inflammatory effect and inhibits oxidative stress and EA has a significant therapeutic effecton AKT gene inducing fatty liver,and the mechanism possibly by inhibiting inflammatory factors of NF-κB,TNF-α,IL-6,COX-2 and anti-oxidative stress-related.

Preparation and properties of heparosan polysaccharide-vitamin E succinate polymer micelles / 药学学报

Due to the advantages of polymer micelles and the anticancer activity of doxorubicin (DOX), the polymer micelle of DOX is expected to be used for drug delivery in anticancer applications. As a biocompatible and biodegradable polymer, amphiphilic copolymer heparosan-adipic dihydrazide-vitamin E succinate (KV) can be self-assembled to form micelles with core-shell structure in aqueous phase. In this article, KV conjugates with two different degrees of substitution (DS) were synthesized to load DOX and were characterized by 1H NMR. The size distribution, morphology, zeta potential and release behavior in vitro of the DOX-loaded micelles were studied. In vitro cytotoxicity was investigated by MTT assay against MGC80-3 and COS7 cells. The cellular uptake of the DOX-loaded micelles was observed by fluorescence microscopy and flow cytometry. The 1H NMR spectra results confirmed the KV polymers were successfully conjugated and the degree of VES grafted on heparosan polysaccharide were 12% and 25%. Briefly, the micelles with two different DS were expressed as KV12 and KV25. The DOX-loaded micelles could resist serum adsorption because of the negative charge on the surface. The average particle size measured by dynamic light scattering (DLS) method was 140-150 nm and the TEM results indicated that the morphology of DOX-loaded micelles were spherical. The encapsulation efficiency and drug loading were 80% and 10%-15%, respectively. The DOX-loaded micelles had sustained release behavior and the cumulative release of DOX/KV12 was slightly higher than DOX/KV25. Moreover, the viabilities of cells which were co-incubated with blank micelles were greater than 90%. It is clear that the blank micelles almost non-toxic to both cells. The IC50 of drug-loaded micelles against COS7 cells was much higher than that of MGC80-3 cells and the DOX/KV12 exhibited greater cytotoxicity. The cellular uptake of DOX/KV on MGC80-3 was greater than COS7 cells. In this study, KV polymer micelles have a sustained drug release activity and have a good selectivity to tumor cells, so it would be a potential carrier in drug delivery.

Finite Element Analysis on Manual Reduction with Inverse Shift for Pronation-Extorsion Trimalleolar Fracture / 医用生物力学

Objective To investigate the feasibility of manual reduction with inverse shift for pronation-extorsion trimalleolar fracture by applying the finite element method combined with clinical experience. Methods Based on CT images and anatomical features of bone, ligaments and other tissues as well as material parameters, a normal ankle model with completed muscles and bones for a Chinese young male was established. According to the related characteristics of the pronation-extorsion trimalleolar fractures, fracture was simulated in the proper position to make osteotomy model. The finite element model of pronation-extorsion trimalleolar fractures was thus established and then applied with mechanical loading to simulate manual reduction with inverse shift. Results The established finite element model of pronation-extorsion trimalleolar fractures was effectively restored by the displacement loading. Conclusions The finite element analysis on pronation-extorsion trimalleolar fractures by inverse shift maneuver could further prove the feasibility, effectiveness and scientificity of manual reduction with inverse shift based on clinical experience.

Clinical comparative study of two kinds of fixation methods by arthroscopy in treatment of ACL tibial avulsion fracture / 中国内镜杂志

Objective To investigate the clinical effects' differences of screw and suture fixation by arthroscopy in treatment of patients with ACL tibial avulsion fracture. Methods 80 patients with ACL tibial avulsion fracture were chosen and randomly divided into both groups including A group (40 patients) with suture fixation by arthroscopy and B group (40 patients) with screw fixation by arthroscopy; and the operation time, the Lysholm knee score, the IKDC knee function subjective scale score, the difference of uninjured and injured side displacement, and the incidence of flexion contracture of both groups were compared. Results The operation time of B group were significantly shorter than A group (P < 0.05). There was no significant difference in the Lysholm knee score, the IKDC knee function subjective scale score and the difference of uninjured and injured side displacement between the two groups (P > 0.05). There was no significant difference in the incidence of flexion contracture between the two groups (P > 0.05). Conclusion Screw and suture fixation by arthroscopy in treatment of patients with ACL tibial avulsion fracture possess the same clinical effects to higher the stability of reduction and improve the joint motion function; but screw fixation by arthroscopy application can efficiently shorten the operation time and reduce the operation difficulty.

Role of Urine ErbB3 Protein in Early Diagnosis of Clear Cell Renal Cell Carcinoma / 中山大学学报(医学科学版)

[Objective]To explore the diagnostic value of urine ErbB3 protein in clear cell renal cell carcinoma.[Methods]We collected 31 urine samples of clear cell renal cell carcinoma patients who received operations in the Urology Department of the First Affiliated Hospital of Sun Yat-Sen University from April 2,2016 to August 31,2016.Meanwhile we collected 50 urine samples of normal people as control.We tested the expression of urine ErbB3 protein in experimen-tal group and control group,and analyzed the differences between the two groups.Then we established the ROC curve of which diagnosing clear cell renal carcinoma by urine ErbB3 protein. Also,we analyzed the relation between ErbB3 pro-tein in urine and the patients'BMI,preoperative creatinine,tumor diameter and underlying diseases such as hyperten-sion and hyperglycemia.[Results]①The expression of urine ErbB3 protein in clear cell renal cell carcinoma group was significantly lower than normal group(P<0.001). ② When diagnosing clear cell renal carcinoma by ErbB3 protein,the AUC of ROC was 0.802(P<0.001). When setting the cutoff as 13.98 pg/mL,the max Youden index was 0.525,the sensitivity was 0.645 and the specificity was 0.880. The Kappa value of diagnostic test was 0.542(P<0.001). ③ There was no correlation between the ErbB3 content and patients'BMI,tumor diameter or preoperative creatinine by correlation analysis. Also,there was no correlation between the urine ErbB3 protein content and blood pressure or blood glucose.[Conclusion]The urine ErbB3 protein of clear cell renal cell carcinoma was significantly lower than normal people,and it is meaningful for applying urine ErbB3 protein to early diagnosis of clear cell renal cell carcinoma.

Features of time distribution in the onset of aortic dissection of 476 patients / 中华消化外科杂志

Objective To investigate the features of time distribution in the onset of aortic dissection (AD).Methods The retrospective cross-sectional study was conducted.The clinical data of 476 AD patients who were admitted to the First Affiliated Hospital of Anhui Medical University from January 2009 to June 2017 were collected.The patients were divided by the following criteria:gender,age [youth(＜45 years),middle-age (45-59 years) and elderly (≥ 60 years)],Stanford types (type A and type B),with or without hypertension.All variables were analyzed by circular distribution statistics to illuminate the features of time distribution in the onset of AD (monthly rhythm and circadian rhythm).Observation indicators:(1) overall time distribution of AD;(2) time distribution of subgroups with different genders;(3) time distribution of subgroups with different age;(4) time distribution of subgroups with different Stanford types;(5) time distribution of subgroups with or without hypertension.Measurement data with normal distribution were represented as (x)±s and count data were described as constituent ratio.The circular distrbution statistics were used to calculate time data of onset after trigonometric function transformation.The monthly rhythm and circadian rhythm were done using the Rayleigh test (Z value).Results (1) Overall time distribution of AD:the AD patients had the monthly rhythm and circadian rhythm (Z=14.79,31.60,P＜0.05).The months with the maximum and minimum cases were November (59 cases) and August (24 cases) respectively,the peak day was on January 12.AD often occurred from 16:00 to 17:00 (37 cases) but barely occurred from 3:00 to 4:00 (8 cases),with a peak of 14:55.(2) Time distribution of subgroups with different gender:male subgroup had the monthly rhythm and circadian rhythm (Z =11.28,27.81,P＜0.05);female subgroup had the monthly rhythm and circadian rhythm (Z=3.48,4.37,P＜0.05).(3) Time distribution of subgroups with different age:patients in the youth subgroup had no monthly rhythm (Z=1.33,P＞0.05),and there was the circadian rhythm (Z=4.29,P＜0.05);patients in the middle-age subgroup had the monthly rhythm and circadian rhythm (Z =7.48,17.41,P＜0.05);patients in the old-age subgroup had the monthly rhythm and circadian rhythm (Z =6.62,11.04,P ＜ 0.05).(4) Time distribution of subgroups with different Stanford type:patients inthe type A subgroup had no monthly rhythm (Z=1.60,P＞0.05),and there was the circadian rhythm (Z=10.51,P＜0.05);patients in the type B subgroup had the monthly rhythm and circadian rhythm (Z=13.94,21.70,P＜0.05).(5) Time distribution of subgroups with or without hypertension:subgroups with hypertension had the monthly rhythm and circadian rhythm (Z =12.08,29.81,P＜ 0.05).Subgroups without hypertension had no monthly rhythm (Z=3.84,P＞0.05),showing a statistically significant difference in the circadian rhythm (Z=4.78,P＜0.05).Conclusion AD often occurs in cold months and afternoon.

Alleviation of aortic vascular dysfunction in STZ/HFD-induced type 2 diabetic rats by nFGF1 / 中国病理生理杂志

AIM:To investigate the protective effect of non-mitogenic fibroblast growth factor 1 (nFGF1) on the aortic vascular function in streptozotocin (STZ)/high-fat diet (HFD)-induced type 2 diabetic rats and its underlying mechanisms. METHODS:Five-week-old male SD rats (n=30) were randomly divided into 3 groups (n=10 in each group),including normal control group,type 2 diabetic group and nFGF1 treatment group(type 2 diabetic rats were intra-peritoneally injected with 0.5 mg/kg nFGF1 every other day for 4 weeks). After the rats were sacrificed, blood glucose, cholesterol and triglyceride levels,aorta diastolic function and superoxide dismutase(SOD) level in the aorta of each group were measured. Besides,the protein levels of cyclooxygenase-2(COX-2),phosphorylated extracellular signal-regulated ki-nase (p-ERK) and endothelial nitric oxide synthase (eNOS) in the aorta were determined by Western blot. RESULTS:nFGF1 markedly lowered blood glucose, cholesterol and triglyceride levels, enhanced aorta SOD activity and upregulated protein level of eNOS in the type 2 diabetic rats. Furthermore,the increased protein levels of COX-2 and p-ERK in the type 2 diabetic rats were largely abrogated by nFGF1. CONCLUSION:nFGF1 effectively attenuates aortic vascular dysfunction in the type 2 diabetic rats,which may be associated with decreasing blood glucose,cholesterol and triglyceride levels,re-ducing inflammation and oxidative stress response,and activating eNOS signaling pathway.

Comparative analysis of chemical constituents, antimicrobial and antioxidant activities of ethylacetate extracts of Polygonum cuspidatum and its endophytic actinomycete, Streptomyces sp. A0916 / 中国天然药物

The present study investigated the chemical composition of ethylacetate extracts from an endophytic actinomycete Streptomyces sp. A0916 and its host Polygonum cuspidatum. A comparative analysis of the antimicrobial and antioxidant properties of the extracts was also conducted. 32 compounds of P. cuspidatum and 23 compounds of Streptomyces sp. A0916 were isolated and identified by GC/MS. Antimicrobial activities of the extracts were evaluated using eight microbial strains (3 Gram-positive bacteria, 3 Gram-negative bacteria, and 2 fungi). The Streptomyces sp. A0916 extracts showed a wide range of antimicrobial activities and presented greater antimicrobial effectiveness than the P. cuspidatum extracts. The minimum inhibitory concentration (MIC) of Streptomyces sp. A0916 extracts against the ampicillin-resistant strain Enterococcus faecium SIIA843 was 32 μg·mL(-1). Furthermore, the extracts had greater antimicrobial effect against Gram-positive bacteria than Gram-negative bacteria. Finally, the antioxidant activity of the Streptomyces sp. A0916 extracts was equal to that of the P. cuspidatum extracts. In conclusion, our results suggest that the endophytic actinomycetes of the medicinal plants are an important source of bioactive substances.

Effect of Opiod Pretreatments on Etomidate Induced Myoclonus:A Meta-analysis / 中国医科大学学报

Objective To assess the effect of opiod pretreatment on etomidate induced myoclonus. Methods The pertinent literatures were searched by two independent investigators from the following electronic databases:PubMed,Cochrane Library,EMbase,VIP,WanFang Data,and CHKD. Then the meta?analysis was performed by using RevMan 5.2 and STATA 12.0 software. Results A total of 24 RCTs involving 2 396 pa?tients were included for the study. Pretreatment ofμorκ?receptor agonists reduced myoclonus with RR=0.19(95%CI 0.14 to 0.27)and RR=0.22 (95%CI 0.12 to 0.40),respectively. Conclusion Pretreatment of opiods can reduce the incidence of etomidate induced myoclonus.

Endovascular procedures for lower limb atherosclerosis obliterans in diabetic and nondiabetic patients / 中华普通外科杂志

Objective To evaluate outcomes of endovascular procedures for atherosclerosis obliterans (ASO) patients with diabetes mellitus (DM).Methods Data of patients undergoing endovascular procedures for atherosclerosis obliterans at the First Affiliated Hospital of Anhui Medical University from January 2012 to December 2014 were retrospectively analyzed,disease characteristics,technical success rate,perioperative complications,ankle brachial index (ABI) improvement,clinical success rate,rest pain alleviating rate,limb salvage rate and survival rate were compared between the two groups.Results There were 144 patients (153 limbs) who received endovascular procedures,including 52 patients (56 limbs) with DM and 92 patients (97 limbs) without DM.Mean follow-up was 15 months.All patients experienced significant ABI improvement (P ＜ 0.05).There was no significant difference in technical success rate (80.4％ vs 90.7％),perioperative complications rate(19.6％ vs 24.7％),1 year rest pain alleviating rate (75.0％ vs 85.6％),1 year limb salvage rate (91.1％ vs 95.6％) and 1 year survival rate (92.3％ vs 90.2％) between diabetic and non-diabetic groups (P ＞ 0.05),but there was less 1 year clinical success rate in diabetic group (78.6％ vs 88.6％,P ＜ 0.05).Conclusions Compared to nondiabetic paitents,endovascular procedures for patients with DM has similar efficacy,when the procedures are properly undertaken and postoperative correct medication are given.

The prevalence of varicocele in male patients with primary varicose vein of the lower extremity / 中华普通外科杂志

Objective To study the correlation between male primary varicose vein of the lower extremity and varicocele.Methods 100 male patients with varicose vein of the lower extremity were compared with 100 male adults without varicose vein of the lower extremity for the prevalence of varicocele by using ultrasonography.Results There is no difference of demographic data between the two groups (t =1.78,P ＞ 0.05).There were 49 (49.0％) patients found with varicoele in study group compared with 19 (19.0％) patients with varicoele in control group (x2 =20.05,P ＜ 0.01).We compared the rate of varicoele and the mean diameter of spermatic vein between the patients having reflux in the saphenofemoral junction or not,and found there was no statistical difference between themn (rate of varicose P ＞ 0.05,diameter P ＞ 0.05).In patients with both lower extremity varicose vein and varicocele there was a linear correlation between spermatic vein diameter and that of varicose vein (rs =0.407 2,P ＜ 0.01).When patients in study group were classified into six grades by Clinical-Etiology-Anatomy-Pathophysiology (CEAP) trend chi-square found no difference in the incidence of varicoele (x2 =0.879 8,P ＞ 0.05),nor the mean diameter of spermatic vein in different grades (F =1.59,P ＞ 0.05).Conclusion There is a correlation between varicose vein of the lower extremity and the pathogcnesis of varicocele.

Effect of Trichinella spiralis and its worm-derived proteins on CLP-induced sepsis in mice / 南方医科大学学报

<p><b>OBJECTIVE</b>To observe the effect of Trichinella spiralis and its worm-derived proteins on cecal ligation and puncture (CLP)-induced sepsis in mice.</p><p><b>METHODS</b>Eighty male BALB/c mice were randomly divided into sham-operated group, CLP group, Trichinella spiralis muscle larvae (ML) pre-infection group (ML+CLP group), soluble muscle larvae proteins (SMP) treatment group (SMP+CLP group) and excretory-secretory proteins (MES) treatment group (MES+CLP group). In ML+CLP group, the mice were orally infected with 300 Trichinella spiralis muscle larvae at 28 days before CLP and those in the other groups were intraperitioneally injected with PBS or SMP (25 µg/mice) or MES (25µg/mice) 30 min after CLP. The general condition and 72-h survival after CLP of the mice were observed. The levels of alanine transaminase (ALT), aspartate transaminase (AST), blood urea nitrogen (BUN), creatinine (Cr), TNF-α, IL-6, IL-1β, IL-10 and TGF-β were measured at 12 h after the operation, and the pathological changes of the liver and kidney were observed.</p><p><b>RESULTS</b>s Compared with the sham-operated mice, the mice in CLP group showed decreased 72-h survival, obviously increased ALT, AST, BUN, Cr, TNF-α, IL-6, IL-1β, IL-10, and TGF-β with hepatic cords disorder, hepatocytes swelling, glomerulus shrinkage, and renal tubular cell edema. Compared with CLP group, the mice in ML+CLP group showed lowered levels of ALT, AST, Cr, TNF-α and IL-1β and increased levels of IL-10 and TGF-β; in SMP+CLP group, the levels of ALT, AST, Cr, TNF-α and IL-1β were decreased and TGF-β increased. In MES+CLP group, the mice showed obviously increased 72-h survival with lowered levels of ALT, AST, BUN, Cr, TNF-α, IL-6 and IL-1β, increased levels of IL-10 and TGF-β, and alleviated liver and kidney damages.</p><p><b>CONCLUSION</b>Trichinella spiralis and its worm-derived proteins can decrease the levels of pro-inflammatory cytokines and increase immunomodulatory cytokines, and MES has more potent effect to reduce structural and functional damages of the liver and kidney.</p>

Research progress of ellagitannin intestinal metabolite urolithins / 中国中药杂志

Ellagitannins is a kind of phenolic compounds with many biological activities. Recent studies have found that the effective ingredients of these compounds have close relationship with their colon-derived bacteria metabolites, that is urolithins. The objective of this study was to review the structure characteristics, types and distribution of urolithins, improvement in diseases related to prostate, breast and colon, as well as anti-cancer, anti-oxidation, anti-inflammation and other biological activities. The present review will lay the foundation for development and utilization of urolithins.

Diversity, bioactivities, and metabolic potentials of endophytic actinomycetes isolated from traditional medicinal plants in Sichuan, China / 中国天然药物

The present study was designed to determine the taxonomic diversity and metabolic activity of the actinomycetes community, including 13 traditional medicinal plants collected in Sichuan province, China, using multiple approaches such as morphological and molecular identification methods, bioactivity assays, and PCR screening for genes involved in antibiotics biosynthesis. 119 endophytic actinomycetes were recovered; 80 representative strains were chosen for 16S rRNA gene partial sequence analyses, with 66 of them being affiliated to genus Streptomyces and the remaining 14 strains being rare actinomycetes. Antimicrobial tests showed that 12 (15%) of the 80 endophytic actinomycetes displayed inhibitory effects against at least one indicator pathogens, which were all assigned to the genus Streptomyces. In addition, 87.5% and 58.8% of the isolates showed anticancer and anti-diabetic activities, respectively. Meanwhile, the anticancer activities of the isolates negatively correlated with their anti-diabetic activities. Based on the results of PCR screening, five genes, PKS-I, PKS-II, NRPS, ANSA, and oxyB, were detected in 55.0%, 58.8%, 90.0%, 18.8% and 8.8% of the 80 actinomycetes, respectively. In conclusion, the PCR screening method employed in the present study was conducive for screening and selection of potential actinomycetes and predicting potential secondary metabolites, which could overcome the limitations of traditional activity screening models.