AIM: To investigate the effect of intravitreal injection of anti-vascular endothelial growth factor (VEGF) drug Bevacizumab on connective tissue growth factor(CTGF) and pigment epithelium derived factor (PEDF) in proliferative membranes in patients with proliferative diabetic retinopathy (PDR).METHODS: From January 2015 to December 2016, 117 patients (126 eyes) with PDR were analyzed using the case-control study.The selected cases were randomly divided into two groups, respectively, Group A of 60 cases (63 eyes) and Group B of 57 cases (63 eyes).The Group A was treated with vitrectomy alone, while the Group B received intravitreal injection of 0.05mL/1.25mg bevacizumab before vitrectomy.The peeled epiretinal membranes in patients were stained and then the histopathological changes were observed for primitive cells and angiogenesis, the expression of CTGF and PEDF were tested.RESULTS: The expression of CTGF and PEDF in the proliferative membrane of the two groups were expressed in the cytoplasm.The Group A showed positive expression in 38 cases, the positive rate was 60.3%.Compared with Group A, the positive expression rate of CTGF in Group B (92.1%) was significantly higher (P<0.05).The positive expression rates of PEDF in the two groups were 90.5% and 95.2% respectively, and there was no significant difference between the two groups (P>0.05).CONCLUSION: In patients with PDR after intravitreal injection of bevacizumab, the retinal neovascularization is significantly reduced, which is conducive to vitrectomy.The positive expression rate of CTGF significantly increased in patients with PDR after intravitreal injection of bevacizumab, but there was no significant change in the expression of PEDF in the anterior membrane.

AIM: To study the effect of intravitreal injection of anti-vascular endothelial growth factor (VEGF) on best corrected visual acuity (BCVA) and multifocal-electroretinogram (mfERG) before and after treatment for choroidal neovascular disease.METHODS: A total of 264 patients (332 eyes) with macular neovascularization (MCNV) and idiopathic choroidal neovascular disease (ICNV) who underwent pathologic myopia from January 2015 to January 2017 were enrolled in this study.Intraocular pressure and BCVA, fundus using 90D front mirror and slit lamp detection, and the fundus photograph, OCT, ICGA and FFA angiography, mfERG detection were taken.One month after the drug, 1mo after the final treatment, we recorded BCVA, intraocular pressure and mfERG and so on.RESULTS: Ranibizumab was injected into the 254 eyes, and 78 eyes were injected with conbercept.There were 37 eyes injected once, 147 eyes were injected twice, 72 eyes were injected 3 times, 57 eyes were injected 4 times, 19 eyes 5 times.There were no significant differences on intraocular pressure between the two groups (P>0.05).The BCVA before treatment was significantly different compared with those 1mo after treatment and 1mo after the final treatment (P>0.05).The amplitude of Ring1, Ring2 and Ring4 increased after treatment, the difference was statistically significant.(P<0.05).The amplitude of Ring3 and Ring5 increased at 1mo after final treatment(P<0.05).CONCLUSION:Intravitreal injection of anti-VEGF drugs has a significant effect on BCVA and mf ERG in patients with choroidal neovascular disease and is safe.

Objective To summarize our experience in the diagnosis and management of popliteal artery entrapment syndrome (PAES). Methods This is a retrospective study on 10 patients (13 limbs)who were admitted for symptoms of claudication and the diagnosis of popliteal entrapment was established either with angiography,computed tomographic angiography,magnetic resonance angiogram or during the operation in recent 7 years (2002-2009).All patients were treated surgically. Results The mean age at the time of presentation was (25 ±7) years old (range,17-41 years).Claudication was the most frequent presenting symptom (12 limbs).The surgical procedures consisted of simple musculotendinous dissociation in 1 limb,thrombectomy with balloon angioplasty in 1 limb,musculotendinous dissociation plus thromboendarterectomy with autogenous saphenous vein (ASV)patch angioplasty in 2 limbs,ASV graft interposition or bypass in 6 limbs and graft interposition or bypass in 3 limbs.At a median follow-up of (35 ±27) months (range,2 months-7 years),there were no intraoperative or long-term postoperative complications and all the patients were cured. Conclusions PAES is an unusual but important cause of peripheral vascular insufficiency especially in young patients.A combined approach is necessary for diagnosis.Popliteal artery release alone or with vein bypass or reconstruction is the treatment of choice.

AIM: To elucidate the change in TFF3 mRNA in the lung tissue in chronic obstructive pulmonary disease (COPD) rats. METHODS: A model of rat COPD was established by passive cigarette smoking and intratracheal instillation of lipopolysaccharide. The expression of TFF3 mRNA in the lung tissues was detected by reverse transcription-polymerase chain reaction (RT-PCR). RESULTS: Through a semi-quantitative pathological analysis, mean lung internal lining interval (MLI) in COPD model group was significantly increased compared with healthy control groups; mean alveolar number (MAN) in COPD model group was significantly decreased compared with healthy control group. The expression of TFF3 mRNA decreased significantly in the lung tissue in COPD model group compared with healthy control group. CONCLUSION: The level of TFF3 mRNA expression is possibly related with lung tissue lesion in COPD rats. [

Objective To assess the efficacy of radiofrequency therapy combined with ozone injection in the treatment of lumbar disc protrusion. Methods A total of 202 patients with lumbar disk protrusion were included and divided into three groups:radiofrequency (RF) group, ozone (Oz) group, and combination (Co) group. The efficacy was evaluated by visual analogue scale (VAS), Macnab curative effect evaluation, and oswestry disability index (ODI) at 1d, 1m and 6m after treat?ment. Results There were no significant differences in gender, age, the course of disease, preoperative VAS scores and ODI scores (P>0.05). All patients were operated successfully. There were no infection of the intervertebral disc, no compli?cations of spinal cord, nerve and no blood vessel injury. There were no significant differences in preoperative VAS and ODI scores between three groups. The VAS and ODI scores were significantly lower at 6 month and 12 month after operation in Co group combined with those of RF group and Oz group. There were no significant differences in these two scores between RF group and Oz group (P>0.05). There were no significant differences in effective rates at 1d, 6 month and 12 month after operation between three groups (P>0.05). But the excellent and good effective rates were higher in Co group than those of RF and Oz groups. There were no significant differences in excellent and good effective rates between RF group and Oz group. Conclusion The therapy of radiofrequency combined with ozone injection is an efficient and mini-invasive tech?nique for the treatment of lumbar disc protrusion and worth promoting.

Objective To explore the diagnosis and treatment of clinical possible organizing pneumonia.Methods The medical records of 31 patients with clinical probable organizing pneumonia were retrospectively analyzed.The clinical presentation,radiographic results and treatment were collected and analyzed.Results Thirty-one patients with non-response to antibiotics were preliminary diagnosed as organizing pneumonia.By percutaneous lung biopsy or transbronchial lung biopsy the tuberculosis,fungi,suppurative inflammation,lung cancer and other diseases were ruled out in 24 patients,and 7 patients were diagnosed by perfect effect of corticosteroids treatment.Twenty-one patients had typical CT findings.All the patients responded rapidly and completely to the administration of corticosteroids.Six patients relapsed after the reduction or stop of corticosteroid in a follow-up time of 6-25 months.Conclusions Non-response to antibiotics,the typical imaging findings and lung biopsy ruling out other diseases are important for diagnosing organizing pneumonia.Rapid response to administration of corticosteroids may be helpful to the diagnosis.Decreasing the dose of corticosteroid too early may cause recurrence of organizing pneumonia.

Objective To study the pharmacokinetics and pharmacodynamics of recombinant human insulin preparations SciLin TM R and Humulin (R) R,and to evaluate their bioequivalence in Chinese healthy volunteers.Methods In this positive control,single dose,open label,randomized cross-over study,20 male healthy volunteers were recruited from March to October 2007,and tested on two experimental days with an interval of 7-14 days.The volunteers were divided into two groups with a random number table,one group was injected with SciLin TMR for the first time and Humulin (R) R for the second time,the other group was injected with the opposite.The pharmacokinetics and pharmacodynamic properties were evaluated by euglycemic glucose clamp study.Results Time to peak concentration [Tmax,(105.8 ± 19.1) minutes vs.(103.5 ± 18.1) minutes,P =0.389) and time to maximum glucose infusion rate [TGIRmax,(132.8 ± 16.8) minutes vs.(132.8 ± 18.6) minutes,P =0.697] for SciLin TMR and Humulin(R) R were similar.The relative bioavailability of SciLin TMR was (102.2 ± 7.6) ％,and the relative biological effectiveness was (107.4 ± 18.8) ％.The 90％ confidence interval(CI) of peak concentration(Cmax) and area under the curve of blood glucose concentration at 0-10 hours (AUCIns 0-10) of SciLin TM R were 99.32 ％-102.62 ％ (equivalent range 70％-143 ％) and 98.98 ％-104.99 ％ (equivalent range 80％-125％),respectively;90％ CI of the maximum glucose infusion rate (GIRmax) and AUCGIR0-10 were 97.36％ ～ 103.49％ (equivalent range 70％-143％) and 98.72％-113.54％ (equivalent range 80％-125％),respectively,indicating that SciLin TMR and Humulin (R) R was bioequivalent.There was no clinically significant abnormalities in the safety indexes before and after the tests.During the trial,no hypoglycemic events,allergic reactions,or local injection adverse reaction occurred.Conclusion The studied recombinant human insulin preparation SciLin TMR may be bioequivalent as Humulin (R) R.

Objective To study the pharmacokinetics and pharmacodynamics of the 40/60 premixed recombinant human insulin injection preparation,and to compare with 30/70 preparation,regular insulin,and neutral protamine Hagedorn (NPH).Methods In this positive control,single dose,open label,Latin square crossover study,20 male healthy volunteers were recruited from May 2006 to March 2007,and divided into four groups.On 4 test days,40/60 preparation,30/70 preparation,regular insulin,and NPH were administered to each of the 4 groups,the interval was 7-70 days before 2 test days.The pharmacokinetics and pharmacodynamics were evaluated by euglycemic glucose clamp technique.Results According to the analysis of variance,there were statistically significant differences in pharmacokinetics and pharmacodynamics of the 4 insulin formulations between the 4 groups (all P ＜ 0.05).For the 40/60 premixed recombinant human insulin,the pharmacokinetic parameter time to peak (Tmax) and mean retention time (MRT) were (105.00 ±24.33) minutes and (321.77 ± 56.29) minutes,respectively;the glucose-lowering effects reflected by the pharmacodynamic parameter Tmax and MRT were (167.75 ± 26.48) minutes and (248.33 ± 14.96) minutes,respectively.Compared with 30/70 premixed recombinant human insulin,40/60 preparation showed no significant differences in the pharmacokinetics parameters of blood insulin concentration,including peak concentration [(91.67 ± 13.03) mU/L vs.(84.96 ± 14.75) mU/L,P =0.119],Tmax [(105.00 ± 24.33) minutes vs.(122.25 ± 39.35) minutes,P =0.128],MRT [(321.77 ± 56.29) minutes vs.(332.12 ± 49.20) minutes,P =0.645] and area under the curve in 0-16 hours [AUCIns 0-16,(24 918 ± 6 610)h · mU/L vs.(26 768 ± 8 032)h· mU/L,P=0.084];however,statistically significant differences were observed in AUCIns0-4 [(16 991 ± 3 673) h · mU/L vs.(12 407 ± 3 441) h · mU/L,P =0.042] and AUCIns 0-8 [(23 283 ± 4 939) h · mU/L vs.(19 397 ±5 314)h · mU/L,P =0.046].Pharmacodynamic parameters showed no statistically significant differences (all P ＞ 0.05).Compared with 30/70 premixed insulin,the relative bioavailability of 40/60 premixed insulin was (118.9 ± 35.9) ％,and the relative biological effectiveness was (106.6 ± 35.2) ％.There was no clinically significant abnormalities in the safety indexes before and after the tests.No hypoglycemic events,allergic reactions,or local injection adverse reaction occurred in this trial.Conclusions The 40/60 premixed recombinant human insulin preparation demonstrated different properties in insulin absorption in 8 hours after injection compared with the 30/70 preparation,mainly because of the difference in proportions of short-and intermediate-acting insulin in the mixture.This new premixed insulin may provide a new option for personalized diabetes management.

This paper reported the suitable medium of L S-1 stain in detail,which could yield natural blue pigment.Single-factor exper imental design shows that the best carbon source was 2% glucose and nitrogen was 0 1% KNO 3.Orthogonal experimental design shows that the most suitable fermen tation medium was consisted of 4% glucose,0 1% KNO 3,0 075% salt and 10?g/m L FeSO 4.The best cultivation temperature was 30℃ and pH7 4.The dissolved oxyg en on the process of fermentation,as well as the variety of pH and the utilized condition of carbon and nitrogen were measured and analyzed.The separation of th is blue pigment by HPLC shows that this material contains actinorhordin and at l east other four ingredients.

Objective To investigate the specific application of ergonomics for design of operation field in sanitary train. Methods The use of ergonomics theory, the layout of operation field, personnel operating capacity, environmental comfort and operation security were analyzed, surveyed and discussed. Results The principles and guidelines for design of opera- tion field in sanitary train were proposed in order to make full development the efficiency of "operator-equipment-environ- ment" mode. Conclusion The application of ergonomics for design of operation field in sanitary train can be improved the rationality of the layout of field of operation, environmental comfort and work efficiency.