Objective To explore the effects of gap junctional(GJ)proteins in pathogenesis of cerebral schistosomiasis, through observing the expression of gap junctional proteins Cx37 mRNA in cultured cerebral arterial endothelium incubated with soluble eggs antigen(SEA). MethodsCerebral artery endothelial cells of rabbits were incubated with SEA, and the experiments were divided into control group and SEA 1 - 5 groups (SEA concentrations were 10.0％ ,5.0％ ,3.3％ ,2.5％,2.0％, respectively), reverse transcription polymerase chain reaction (RT-PCR) and Western blotting were used to examine the expression of Cx37 mRNA and protein in cerebral artery endothelial cells of rabbits, respectively. Results Cx37 mRNA levels of control and SEA 1 - 5 groups were 0.239 ± 0.037, 0.260 ± 0.043, 0.218 ± 0.310, 0.647 ± 0.040, 0.419 ± 0.036, and 0.513 ± 0.038, respectively;SEA 3 - 5 groups were higher than control group of mRNA levels(all P＜ 0.05). Cx37 protein levels of control and SEA 1 - 5 group were 0.401 ± 0.045, 0.485 ± 0.048, 0.749 ± 0.052, 1.119 ± 0.063, 1.015 ± 0.057 and 0.605 ±0.047, respectively, of which SEA 2 - 5 groups were higher than control group(all P ＜ 0.05). ConclusionsExpression levels of Cx37 mRNA and protein in cultured cerebral artery endothelial cells incubated with SEA are higher than those of control cerebral artery endothelial cells, which suggests that the gap junction proteins may play an important role in pathogenesis of cerebral schistosomiasis through SEA and its secretion in infiltration of brain tissue and deposition in the cerebral arteries.

OBJECTIVETo explore the effect of peimine on excision repair cross-complementation 1 (ERCC1) mRNA and lung resistant protein (LRP) expressions in A549/cisplatin (DDP) multidrug resistance (MDR) cell line.

METHODSLung cancer A549/DDP cells were cultured in vitro.Cells at logarithmic growth phase were divided into 4 groups, i.e., the blank control group, the DDP group, the ligustrazine group (DDP+ligustrazine), the peimine group (DDP + peimine). After 48-h drug action, ERCC1 mRNA expression was detected by RT-PCR and LRP expression detected by cell immunofluorescence.

RESULTSThere was no statistical difference in expression levels of ERCC1 mRNA and LRP between the DDP group and the blank control group (P > 0.05). Compared with the DDP group, expression levels of ERCC1 mRNA and LRP obviously decreased in the ligustrazine group and the peimine group (P < 0.05). They were obviously lower in the peimine group than in the ligustrazine group (P < 0.05).

CONCLUSIONSPeimine could reverse MDR of A549/DDP cell line. Its mechanism might be associated with down-regulating ERCC1 mRNA and LRP expression levels.

Cell Line, Tumor ; Cevanes ; pharmacology ; Cisplatin ; DNA-Binding Proteins ; genetics ; Down-Regulation ; Drug Resistance, Multiple ; Drug Resistance, Neoplasm ; drug effects ; Endonucleases ; genetics ; Humans ; Low Density Lipoprotein Receptor-Related Protein-1 ; genetics ; Lung Neoplasms ; RNA, Messenger ; metabolism

Background Interleukin-17 (IL-17)is a potent pro-inflammatory cytokine and plays a pathogenic role in autoimmune disease.It was confirmed that IL-17 is implicated in allograft rejection of many transplanted organs.Recent studies have foensed on the effect of IL-17 antagonists on allograft rejection.Objective This study aimed to investigate the inhibitory effect of anti-mouse IL-17 monoclonal antibody (mAb) on corneal allograft rejection.Methods Twenty-five 8 to 10-week-old C57BL/6 mice and 50 BALB/c mice were collected.Donor cornea grafts with 2 mm diameter from 25 C57BL/6 mice was transplanted to 50 eye of BALB/c mice to establish a model of corneal transplantation.The recipients were randomized into 2 groups,and neutralizing mouse IL-17antibody or isotype control antibody was intraperitoneally injected immediately after transplantation for experimental treatment,respectively.Allografts were scored clinically at appropriate time points after treatment based on Plskova criteria,and ≥5 was confirmed as rejection.Infiltrating cells in corneal graft were detected qualitatively and quantitatively by immunohistochemistry and reverse transcription-PCR separately.The cytokine levels of T helper type 1 (Th1),Th2,and Th17 in recipients' spleen wer(c) analyzcd by ELISA.The use of the animals followed the Statement of ARVO.Results Compared with the isotype control antibody group,the survival of grafts was improved in the IL-17mAb group(P＜0.05).The levels of neutrophile granulocyte mRNA,CD4+ and CD8+ T lymphotes mRNA were 2.22±0.10,1.64±0.04 and 1.32±0.10 in the IL-17 mAb group,showing a significant decline in comparison with those of the isotype control antibody group(3.61 ±0.08,2.69±0.06 and 2.17±0.04) (P=0.000,0.000,0.000).Interferon-γ(IFN-γ),IL-12 p40 and IL-17 concentrations in recipients ' splenocytes were (529.80 ± 13.83) ng/L,(539.58 ±10.74) ng/L and(173.70±8.11)ng/L in the IL-17 mAb group,and thosc in the isotype control antibody group were (741.48± 10.51) ng/L,(1156.90 ± 69.93) ng/L and (366.13± 7.93) ng/L,with significant differences between them (P=0.000,0.001,0.000).Conclusions Neutralization IL-17 bioactivity inhibits mouse corneal allograft rejection to a certain extent.

Objective To investigate the diagnostic value of the recombinant surface antigen 1 (rSAG1) in immunodiagnosis of toxoplasmosis. Methods Isopropyl β-D- 1 -thio-galaetopyranoside (IPTG) was used to induce the expression of recombinant plasmid pET28a-SAG1 of Escherich coli(pET28a-SAG1/BL21 ). The expression products (rSAG1) of pET28a-SAG1/BL21 were identified by Western blotting. The serum of mice infected with Toxoplasma gondii tachyzoites, normal mouse serum and the serum from 10 toxoplasma gondii patients were used as primary anti-Toxoplasma gondii antibodies, and the rSAG1 gene products were identified by Western blotting, by which the diagnostic value of rSAG1 in Toxoplasmosis was compared. Results After induction and purification, rSAG1 protein was obtained and its relative molecular mass was 38.5 × 103. The fusion protein could be recognized by the serum of mouse infected with Toxoplasma gondii tachyzoites, rSAG1 of expression products of surface membrane antigen SAG1 gene from Toxoplasma Gondii could be detected in 4 cases from 10 patients by Westem blotting.Conclusion The rSAG1 has a potential value in the immunodiagnosis of Toxoplasmosis.

OBJECTIVE: To test the technical parameters of GlobalFiler® PCR Amplification Kit for its application to forensic application value and to investigate the genetic polymorphisms. METHODS: The validation was conducted in sensitivity, mixed samples, species specificity, adaptability, survivability, consistency, peak height balance and stability. The amplification and detection of the genomic DNA from 373 unrelated individuals from Beijing Han nationality were extracted by automation workstation. RESULTS: Global-Filer® PCR Amplification Kit was adaptive to some mixed, degraded and inhibited samples. The power of sensitivity and adaptability and peak height balance showed well. The distributions of genotype frequencies for 21 STR loci in the population were all in accordance with Hardy-Weinberg equilibrium (P > 0.05). The PIC value of the 21 STR loci was among 0.536 to 0.940; the H value was among 0.558 to 0.933; the DP value was among 0.783 to 0.992; the PE value was among 0.243 to 0.874. CONCLUSION GlobalFiler® PCR Amplification Kit is suitable for criminal cases and DNA database in forensic practice. And 21 STR loci in Beijing Han nationality have high polymorphism, which have application value in forensic practice and population genetics.
Asian People/genetics* ; Beijing ; Databases, Nucleic Acid ; Ethnicity ; Gene Frequency ; Genetic Loci/genetics* ; Genetics, Population ; Genotype ; Humans ; Polymerase Chain Reaction/standards* ; Polymorphism, Genetic ; Reproducibility of Results ; Species Specificity

By using enrichment media NPC and CVP, 792 strains of Pseudomonas and 515 strains of Erwinia were isolated from the rhizosphere of Digitaria adscendens (H. B. K.) Hem and Setaria vindis (L.) Beanv. Following which, experiments of antimetabolic test with E. coli, seed emergence controlling of S. viridis, herbicidal activity and security with green grass were carried out to select the desired bacteria. As the result, the selected strain, S7, could wholly control the seed emergence of S. viridis without any harm to the two tested green grass. And more, S7 promoted the seed emergence of Festuca arundinacea slightly. In spite of the comparatively low corrected mortality (56. 7%) of S7 after emergence of S. viridis, Selecting of microbial herbicides from weed DRB is thought to be more prospective.

OBJECTIVETo determine the three-dimensional stability of C1-C2 after anterior approach screw fixation through C2 vertebral body to C1 lateral mass for C1-C2 instability or dislocation.

METHODSThe three-dimensional range of motion of atlantoaxial joint were measured in 16 human cadaveric specimens under four conditions: the intact state (1st group), odontoid fracture of type II (2nd group), instrumentation with posterior C1-C2 trans-articular screw fixation (Magerl technique) (3rd group) and anterior approach screw fixation through C2 vertebral body to C1 lateral mass (4th group) respectively.

RESULTSThere was generally significant difference between 1st group and other groups and between 2nd group and other groups by statistics analysis (P < 0.001). Range of motion significantly decreased in 3rd group and 4th group in all directions. There was generally no significant difference between the two methods by statistical analysis (P > 0.05).

CONCLUSIONAnterior approach screw fixation through C2 vertebral body to C lateral mass provides satisfied stability. It provides the equivalent effect to Magerl technique. It is a kind of reliable surgery choice for the treatment of instability or dislocation of C1-C2 joint.

Adult ; Atlanto-Axial Joint ; surgery ; Biomechanical Phenomena ; Bone Screws ; Cadaver ; Cervical Vertebrae ; surgery ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Internal Fixators ; Male

OBJECTIVETo evaluate the association of Pro12Ala polymorphism of peroxisome proliferator activated receptor gamma (PPARgamma) gene with type 2 diabetes (T2DM) in Chinese Han population.

METHODSThe present investigation was carried out using the keywords "PPARgamma", "pparg", "Pro12Ala", "type 2 diabetes", and "Chinese. The odds ratios (OR) for Ala12 used as the metric of choice were calculated in the dominant and additive model separately. The Meta-analysis was conducted by software STATA 11.0.

RESULTS(1) We identified 22 studies, of which 17 studies involving 3927 type 2 diabetes cases and 3364 controls fell into the inclusion criteria. The analysis indicated no significant inter-study heterogeneity and publication bias. (2) The frequencies of the minor allele Ala12 in type 2 diabetes and control groups were 4.8% and 4.6% respectively. (3) The combined overall OR of dominant and additive model calculated by fix-effects meta-analysis for type 2 diabetes and the Pro12Ala polymorphism, were 0.95 (95% CI: 0.80, 1.12) and 0.93 (95% CI: 0.79, 1.09) respectively.

CONCLUSIONIn this meta-analysis, the Pro12Ala gene variant (rs1801282) is not found to be associated with the susceptibility for type 2 diabetes in Chinese Han population.

Asian Continental Ancestry Group ; genetics ; Diabetes Mellitus, Type 2 ; genetics ; Gene Frequency ; Genetic Predisposition to Disease ; Humans ; PPAR gamma ; genetics ; Polymorphism, Genetic

Objective To analyze the difference in computed tomography (CT) imaging findings between pulmonary alveolar pneumoconiosis Methods proteinosis (PAP) and occupational pneumoconiosis (hereinafter referred to as ). A total of 44 patients with PAP (PAP group) and 44 patients with pneumoconiosis (pneumoconiosis group) were selected as study subjects using Results convenient sampling method. The CT images of these two groups were comparatively analyzed. The detection rates of - - pulmonary CT pattern changes such as map like performance, ground glass opacity, paving stone sign and sphenoid wing like vs vs changes of pulmonary hilum in the PAP group were higher than those in the pneumoconiosis group (77.3% 0.0%, 75.0% vs vs P 2.3%, 56.8% 0.0%, 18.2% 0.0%, all <0.01); the detection rates of lymphadenopathy and calcification of pulmonary hilum, small pulmonary nodules, emphysema and interlobular septal thickening were lower in the PAP group than those in the vs vs vs vs P Conclusion pneumoconiosis group (34.1% 100.0%, 4.5% 100.0%, 2.3% 45.4%, 0.0% 22.7%, all <0.01). Paving - stone sign and map like performance were most commonly found in the CT imaging of patients with PAP, and it is uncommon in pneumoconiosis. These changes could be used as the CT differential diagnosis of the two diseases.

Objective To analyze the difference in computed tomography (CT) imaging findings between pulmonary alveolar pneumoconiosis Methods proteinosis (PAP) and occupational pneumoconiosis (hereinafter referred to as ). A total of 44 patients with PAP (PAP group) and 44 patients with pneumoconiosis (pneumoconiosis group) were selected as study subjects using Results convenient sampling method. The CT images of these two groups were comparatively analyzed. The detection rates of - - pulmonary CT pattern changes such as map like performance, ground glass opacity, paving stone sign and sphenoid wing like vs vs changes of pulmonary hilum in the PAP group were higher than those in the pneumoconiosis group (77.3% 0.0%, 75.0% vs vs P 2.3%, 56.8% 0.0%, 18.2% 0.0%, all <0.01); the detection rates of lymphadenopathy and calcification of pulmonary hilum, small pulmonary nodules, emphysema and interlobular septal thickening were lower in the PAP group than those in the vs vs vs vs P Conclusion pneumoconiosis group (34.1% 100.0%, 4.5% 100.0%, 2.3% 45.4%, 0.0% 22.7%, all <0.01). Paving - stone sign and map like performance were most commonly found in the CT imaging of patients with PAP, and it is uncommon in pneumoconiosis. These changes could be used as the CT differential diagnosis of the two diseases.