AIM:Receptor tyrosine kinase (RTK) activation is critical for growth factor-mediated cell proliferation. The present study was designed to determine the effect of the tyrphostin AG1295 and AG1296, a selective blocker of PDGF βand αRTK,on proliferative vitreoretinopathy (PVR) development.METHODS:Rabbit conjunctival fibroblasts (RCF) cells were cultured.The effects of AG1295, AG1296,PDGF-AA and PDGF-BB on RCF proliferation are evaluated by MTT assay.Homologous rabbit conjunctival fibroblasts were injected intravitreally to make animal PVR model, followed by injection of 100μmol/L of AG1295 or AG1296 respectively. The presence of tractional retinal detachment (TRD) was assessed to evaluate the effect of AG1295 and AG1296 in vivo .Electroretinography and histologic studies were performed after intravitreal injection of AG1295 into untreated eyes to evaluate toxicity. RESULTS: Both AG1295 and AG1296 (10μmol/L) significantly inhibited rabbit conjunctival fibroblast cell growth stimulated by PDGF-AA or -BB in vitro.Development of TRD was significantly reduced (P<0.05) with 100 μmol/L of AG1295 or AG1296 in vivo, but the effect of AG1295 only present till day 14. Inhibitive effect of AG1296 is longer than that of AG1295.No significant histologic or retinal functional damage was found in both drug-treated groups. CONCLUSION: PDGF αand βreceptor specific inhibitor AG1296 and AG1295 attenuated PVR without significant side effects in rabbits, and AG1296 was better than AG1295. The much longer and stronger therapeutic effect from PDGFαreceptor inhibitor indicated that PDGF α receptor is more important in the development of PVR, and inhibition of this pathway could be a useful treatment alternative to prevent PVR.

Objective To investigate the value of ultrasound-guided liver biopsy for infantile hepatitis syndrome regarding diagnosis,treatment and prognosis.Methods Fifty children with infantile hepatitis syndrome hospitalized in Guiyang Maternal and Child Hospital during Aug.2010 to May 2012 were involved in this study.Ultrasoundguided liver biopsies were performed to evaluate the inflammation grade and fibrosis stage.Immunohistochemical staining was used for pathogen diagnosis.The clinical outcomes were followed-up.Results Thirty-four cases (68％)were CMV infection,6 cases(12％) were vanishing bile duct syndrome,4 cases(8％) were chronic intrauterine infection,4 cases(8％) were congenital anomaly of bilirubin metabolism,and 2 cases (4％) were obstructive cholangitis.All 50 cases showed mild inflammation at portal area(G1-G2 grade).All 50 cases exhibited liver fibrosis.Sixteen cases were S1 stage,20 cases were S2 stage,8 cases were S3 stage and 6 cases were S4 stage.Pathogen analysis:all 50 cases showed intrahepatic cholestasis:38 cases were diffuse cholestasis,and 12 cases were moderate cholestasis.Treatment:all cases were treated using 2-week heteropathy; antivirus was used for CMV infected cases,thus 39 cases were finally cured,9 cases were relieved,and 2 cases were ineffective.Conclusion Liver biopsy is valuable for diagnosis,treatment and prognosis infantile hepatitis syndrome.

The incidence of deacclimatization to high altitude syndrome (DAHAS) prevailed up to 80% in highland troops, and 100% in manual workers, and severe DAHAS could significantly affects patients' health, work and life. So it is imperative to develop effective prevention and treatment measures for DAHAS. The present review analyzes effective prophylactic and therapeutic measures against DAHAS, implemented at our hospital.
Acclimatization ; Altitude ; Altitude Sickness ; prevention & control ; therapy ; Humans

AIM: To investigate the relationship among MCP-1 and monocyte chemoattract protein activity (MCA) and pathogenesis of lung cancer. METHODS: 173 patients were involved in the study and divided into three groups: group A: lung cancer group (60 patients); group B: benign lung disease group (55 patients) and group C: healthy control group (58 patients). MCP-1 level and MCA in bronchoalveolar lavage fluid (BALF) were measured. RESULTS: The concentration of MCP-1 and MCA in BALF in group A were much higher than those in group B and group C (P

Objective To study the relationship between environmental chemical elements,vires infection and dilated cardiomyopathy(DCM).Methods In 2008,233 patients with DCM(case group)and 150 patient with stable angina(control group)were chosen in Liaocheng People's Hospital and Yanggu People's Hospital,Shandong province.Population distribution and disease history were surveyed in the two groups.Human myocardial antibody IgG(AMA-IgG),Coxsackie B virus IgG(CBV-IgG),Adenofirus antibody IgG(ADV-IgG)were detected by ELISA in both the case group and the control group.Serum trace elements were detected in the two groups.The general chemical and toxicological indicators in drinking water of the high-and the low-incidence aireas of the disease were control group[60.00%(90/150),χ2=13.80,P<0.01)].Per capita annual income(Yuan,RMB)in the case group (3207.82±618.51)was lower than that of the control group[(5086.61±886.12),t=24.40,P<0.01].Personal alcohol consumption in the case group[(175.00±160.50)g/d]was higher than that of the control group[(110.22±100.03)g/d,t=4.40,P<0.01)].The rate of myocarditis in the case group[5.15%(12/233)]was higher than ADV-IgG in the cage group were 7.78%(7/90),6.67%(6/90)and 6.67%(6/90),respectively.Compared with those in the control group[3.33%(2/60),5.00%(3/60)and 5.00%(3/60),χ2=1.26,0.18,0.18,all P>0.05],no mg/L]in drinking water of the high-incidence areas were significantly higher than that of iron[(0.39±0.67)mg/L,t=2.11,P<0.05]and that of manganese[(0.15±0.14)mg/L,t=3.01,P<0.01]in the low-incidence arefas.The content of semm iron[(69.1±57.8)μmol/L]in the case group evidently exceeded the normal range(15.6-35.9 μmol/L)and obviously higher than that in the control group[(20.0±17.5)μmol/L,t=5.04,P<0.01].Conclusions Theso data do not support that DCM is related with persistent virus infection and autoimmunization.DCM is probably related with low incomes,high alcohol consumption,myocarditis,high iron and manganese contents in drinking water and high content of serum iron.

In this study,we aimed to study the pattern visual evoked potentials (P-VEPs) in two eyes with varying visual acuity in one eye and to provide an objective estimation of visual acuity by comparing P-VEPs in one and two eyes.Thirty subjects were chosen,who had one eye with an acuity of 5.0,4.85,4.6,4.0,or scieropia and obstructed vision and the other eye with an acuity of 5.0,respectively.P-VEPs were detected under the large grating stimuli at 3×4 spatial frequency,moderate grating stimuli (12× 16 spatial frequency) and small grating stimuli (48×64 spatial frequency).Under large grating stimuli,there was no significant difference in P100 peak latency between the groups,nor was there a significant difference between the amplitude of two eyes and the amplitude of one normal-vision eye.Under moderate and small grating stimuli,there was a significant difference in P100 peak latency between the group with both eyes having an acuity of 5.0 and the group with visual acuity below 4.0 in one eye.There was a significant difference in P100 amplitude between the group with visual acuity of 5.0 in both eyes and the group with one normal-vision eye.There was no significant difference in the amplitude of two eyes and the amplitude of one normal-vision eye between any other two groups.In forensic identification,characteristics and variability of P-VEPs in one and two eyes can be used to identify malingering or decline in visual acuity.

This study was aimed to investigate the sensitizing effect of recombinant human PDCD5 (rhPDCD5) protein on chemotherapy of U937 cell line and its mechanism. The flow cytometry was performed to assess the changes of cell apoptosis and cell cycle influenced by rhPDCD5. Hochst 33258 staining was used to observe morphology of the apoptotic cells. The activity change of caspase-3 was detected to analyse the possible mechanisms of rhPDCD5-induced apoptosis. RT-PCR was performed to observe the expression level of drug-resistant genes. The results showed that the percentage of apoptotic cells and the activity of caspase-3 remarkably increased in U937 cells treated with rhPDCD5 combined with chemotherapeutic drug; the cell cycle arrest induced by anti-tumor drug was also enhanced when combined with rhPDCD5; meanwhile, the expression levels of drug-resistant genes were down-regulated in jointly treated U937 cells. It is concluded that the chemosensitizing mechanisms of rhPDCD5 are complex. rhPDCD5 may increase the cytotoxicity of anti-tumor drugs by promoting the caspase-3-related apoptosis, influencing cell cycle, decreasing the expression of drug-resistant genes and reversing drug-resistance.
Antineoplastic Agents ; pharmacology ; Apoptosis ; drug effects ; Apoptosis Regulatory Proteins ; pharmacology ; Caspase 3 ; metabolism ; Cell Cycle ; drug effects ; Drug Resistance, Neoplasm ; drug effects ; Humans ; Neoplasm Proteins ; pharmacology ; Recombinant Proteins ; pharmacology ; U937 Cells

OBJECTIVETo observe amplitude changes of low frequency fluctuation in brain spontaneous nervous activities induced by needling at Hand Taiyin Lung Channel, and to preliminarily explore the possible brain function network of Hand Taiyin Lung Channel.

METHODSBy using functional magnetic resonance imaging (fMRI), 16 healthy volunteers underwent resting-state scanning (R1) and scanning with retained acupuncture at Hand Taiyin Lung Channel (acupuncture, AP). Data of fMRI collected were statistically calculated using amplitude of low frequency fluctuations (ALFF).

RESULTSUnder R1 significantly enhanced ALFF occurred in right precuneus, left inferior parietal lobule, bilateral superior temporal gyrus, bilateral middle frontal gyrus, left superior frontal gyrus, left inferior frontal gyrus, left medial frontal gyrus. Under AP significantly enhanced ALFF occurred in right precuneus, bilateral superior frontal gyrus, cerebellum, bilateral middle frontal gyrus, right medial frontal gyrus, and so on. Compared with R1, needing at Hand Taiyin Lung Channel could significantly enhance ALFF in right gyrus subcallosum and right inferior frontal gyrus. Significant decreased ALFF appeared in right postcentral gyrus, left precuneus, left superior temporal gyrus, left middle temporal gyrus, and so on.

CONCLUSIONNeeding at Hand Taiyin Lung Channel could significantly change fixed activities of cerebral cortex, especially in right subcallosal gyrus, right inferior frontal gyrus, and so on.

According to the structure-activity relationships (SARs) of modafinil, a therapeutic drug of hypnolepsy, we designed and synthesized two series of compounds 2-[(diphenylmethane)sulfinyl] acetamides and 2-[(diphenylmethyl)thio] acetamides, and measured their biological activities. The target compounds (6a-6o) were synthesized beginning with diphenyl carbinol by substitution, oxidation, acylation and so on. Their structures were confirmed by ESI-MS, 1H NMR and elemental analysis. The central stimulatory effects of the target compounds were determined by the independent activity assay on mice. Compounds 6c, 6f and 6n have considerable activities, while the central stimulative effect of 6h is slightly better than the positive control modafinil.
Acetamides ; chemical synthesis ; chemistry ; pharmacology ; Animals ; Behavior, Animal ; drug effects ; Benzhydryl Compounds ; chemistry ; pharmacology ; Biphenyl Compounds ; chemical synthesis ; chemistry ; pharmacology ; Methane ; chemical synthesis ; chemistry ; pharmacology ; Mice ; Mice, Inbred ICR ; Random Allocation ; Structure-Activity Relationship ; Wakefulness-Promoting Agents ; chemical synthesis ; chemistry ; pharmacology

ObjectiveTo establish the methodology for identification of clinical isolates of Mycobacterium and to identify the distribution of Mycobacterium species in hospitalized patients with tuberculosis in Heilongjiang province.It would provide the basis for accurate diagnosis of infections with Mycobacterium tuberculosis (MTB) and non-tuberculous Mycobacterium (NTM) as well as for effective therapy.Methods Three hundred and thirty Mycobacterium isolates from 330 tuberculosis patients hospitalized and clinically diagnosed in Harbin Chest Hospital from May 2007 to December 2008 were collected.Genomic DNA from the isolates was extracted after inactivation of Mycobacterium.Molecular identification was carried out using PCR,PCR-restriction fragment length polymorphism (RFLP) and sequencing.ResultsAmong 330 clinical isolates,328 were identified as MTB complex (MTBC),accounting for 99.4％ (328/330); 2 were NTM,accounting for 0.6％ (2/330).Among 328 MTBC isolates,326were MTB,one was Mycobacterium Africanum(M.African) and one was Mycobacterium microti(M,microti),accounting for 99.4％ (326/328),0.3％ (1/328) and 0.3％ (1/328),respectively.It was found that the homology between the two NTM isolates and Mycobacterium avium intracellulare (MAC)was 99％ and 93％,respectively,suggesting that the two NTM isolates were MAC.The homology between the two NTM isolates was 93％.ConclusionsPCR plus PCR-RFLP and sequencing provides an ideal method for precise identification of Mycobacterium species.In the clinically diagnosed tuberculosis patients,the predominant Mycobacterium species is MTB,however M.African,M.microti as well as NTM are also found.