Objective To explore the Troponin I(cTnI) ,myoglobin(MYO) and creatine kinase isoenzyme(CK‐MB) in early di‐agnosis of acute myocardial infarction(AMI) ,and compare their significance in the diagnosis of AMI .Methods used chemilumines‐cence method in 126 patients with AMI and 82 cases of myocardial infarction group to test cTnI ,MYO and CK‐MB ,the results were compared .Results The cTnI ,MYO ,CK‐MB quality appear time and peak time was different ,in patients with acute myocardial in‐farction(cTnI ,MYO and CK‐MB joint detection sensitivity ,specificity ,negative predictive value ,positive predictive value was higher than single test .Conclusion cTnI ,MYO and CK‐MB joint detection is helpful to early diagnosis of AMI .

Objective To study the effects of macrophage migration inhibitory factor (MIF) on spinal cord injury. Methods C57BL/6 mice with injury at T9 ~T10 were taken as spinal cord injury ( SCI) model, and they were divided into the operated group and the sham oper-ated group. Immunohistochemistry was used to detect expression changes of MIF during 72 hours after operation. Reverse transcriptase-poly-merase chain reaction ( RT-PCR) was used to test changes of mRNA level. And double staining immunofluorescence techniques was used to show expressions of MIF and RhoA. Results Expression of MIF at acute stage (72 hours after injury) increased significantly. Results of RT-PCR showed that mRNA levels of MIF and RhoA both increased. There were statistical differences between the two groups (P<0. 05). Con-clusion In acute stage after SCI, MIF increased in the activated microglia. MIF accumulated in oligodendrocyte-like and astrocyte-like cells in injured spinal cord, which might contribute to inhibitory environment for regeneration. Moreover, mRNA level of MIF raised with the in-crease of RhoA mRNA level, which indicated the potential inhibition of MIF to axonal regeneration in CNS.

Objective:To explore the diagnostic value of miRNA-15a in patients with prostate cancer.Methods:From January 2014 to January 2015,Gene expression of MiRNA-15a were examined in 36 serum and tumor tissue samples from prostate cancer ,40 benign prostatic hyperplasia ( BPH) and 40 health volunteers ,which examined by quantitative Real-time reverse transcription polymerase chain reaction(RT-qPCR).Results: The serum expression of miRNA-15a were (0.193±0.081),(0.359±0.04) and (0.376± 0.037 ) in patients with prostate cancer ,benign prostatic hyperplasia and healthy controls respectively .miRNA-15 a expression was sig-nificantly lower in BPH and healthy controls than patients with prostate cancer (P<0.05).There were no significant difference between BPH and control group(P>0.05).Serum miRNA-15a expression in patients with prostate cancer at different expression levels PSA , Gleason score,clinical stage,the difference between the presence of distant metastasis was statistically significant (P<0.05),and other pathological factors unrelated (P>0.05);Prostate cancer tumor tissue expression and PSA expression levels of miRNA-15a,Gleason score,clinical stage,presence of distant metastasis was statistically significant difference between (P<0.05),and other pathological factors unrelated(P>0.05).Conclusion:Low expression of miRNA-15a may be contributed in the development of prostate cancer ,and the expression levels miRNA-15a may be considered potential novel biomarkers for the diagnosis of prostate cancer .

[Objective] To investigate the role SPAG5 play in ovarian adenocarcinoma cell mitosis,Taxol sensitivity and ovarian high grade serous carcinoma patients' prognosis.[Methods] Transient knockdown of SPAG5 in SKOV3 cell were performed,and MTT assay and cell cycle flow cytometry assay were carried out.IHC staining of SPAG5 protein in 110 high grade serous carcinoma patients' tumor tissues were performed,and the expression were analyzed with clinical data and prognosis.Finally,SPAG5 were knocked down in OVCAR3 A2780 and SKOV3 cells followed by 0.5μM Taxol treatment,MTT assay were performed to detect cell viability.[Results] SPAG5 knockdown inhibited cell mitosis of ovarian adenocarcinoma cell SKOV3 by G2/M arrest.High grade serous carcinoma patients after neoadjuvant chemotherapy gained the expression of SPAG5.Patients without neoadjuvant chemotherapy with low SPAG5 expression have poor progress free survival,especially in early stage patients.Patients with low SPAG5 expression also have poorer overall survival,but the difference was not statistically significant.Furthermore,SPAG5 knockdown in OVCAR3 A2780 and SKOV3 cells reduced Taxol sensitivity.[Conclusion] SPAG5 regulated cell mitosis and promoted cell proliferation in ovarian adenocarcinoma cell lines.Expression of SPAG5 in patients' tumor tissues predicted patients' prognosis and Taxol sensitivity.As the results,individualized treatment of high grade serous carcinoma patients is necessary.

NDRG2, one of the new N-Myc downstream-regulated gene (NDRG) gene families, is believed to be involved in cell growth event. However, the exact function is still unknown. Identification of the tissue or cell types expressing this gene in vivo will provide clues in clarifying its physiological roles. Using RT-PCR and Western blot, we analyzed the expression level of NDRG2 mRNA and protein in human fetal tissues from different gestational ages. The anti-NDRG2 monoclonal antibody, which has been proved to react specifically with NDRG2 protein, was further used to analyze the cellular location of NDRG2 protein in various human fetal tissues by immunohistochemistry. We found that NDRG2 expression was developmentally dynamic, being generally lower in the early stages of development and markedly increasing during the later stages. NDRG2 mRNA and protein distribution were generally consistent in heart and lung. One of the differences was that NDRG2 protein appeared later than mRNA in kidney. Another unmatched expression was found in liver. NDRG2 mRNA appeared later than protein in liver. In human fetal tissues at sixteen and twenty-eight weeks of gestation, NDRG2 protein immunoreactions could be seen in epithelium of small intestine, epithelium of large intestine, superficial layer of epidermis, whisker follicles, epithelium of small bronchus, hepatocytes, cardiac myocytes, thymus corpuscles and epithelium of renal tubule, and the immunoreactions in those tissues from twenty-eight weeks of gestation was stronger than that from sixteen weeks of gestation. In the present study, we demonstrate the expression pattern and cellular location of NDRG2 protein in a large set of human fetal tissues. This is the first demonstration of NDRG2 protein expression in human fetal tissues. Taken together, the results suggest that NDRG2 protein found in a variety of tissues is not a tissue-specific protein, and may play important roles in histogenesis and organogenesis.
Fetus ; Gene Expression Regulation, Developmental ; Humans ; RNA, Messenger ; genetics ; metabolism ; Tissue Distribution ; Tumor Suppressor Proteins ; genetics ; metabolism

Objective To evaluate the reliability and validity of SF-36 in patients with advanced schistosomiasis,so as to proride scientific basis for the selection of suitable tools for health measure.Methods A Chinese version of SF-36 scale was applied to evaluate the health of patients with advanced schistosomiasis by a household survey in Hanshou County of Hunan Province and Jiangling County of Hubei Province,then the reliability and validity of the scale were tested.Results Atotal of 326 patients were investigated in the two counties.The split-half reliability(with a split-half coefficient of 0.95) and the internal consistency (Cronbach'α coefficients of the eight dimensions ranged from 0.86 to 0.88)were satisfying;the convergent and discriminative validity were high with the test successful rates of 97.14%and 87.86%,respectively;the criterion validity was acceptable with a correlation coefficient between the total score of SF-36 and EQ-5D+C VAS score of 0.70.However,the construct validity seemed to be not so reasonable as only 2 dimensions out of 8 were completely in accordance with the theoretical model on factor loading.The percentages of floor effect and ceiling effect in most dimensions were not significant except RP and RE(with the percentages of floor effect of 50.31%and 48.16%,respectively).Conclusions SF-36 is appropriate to be used in patients with advanced schistosomiasis.but some items need to be improved according to the local settings of endemic areas.

In vitro gene delivery, polyethyleneimine (PEI) has been described as one of the most efficient nonviral vector. Herein the formation mechanism of PEI/DNA complexes is elucidated. The transition phase of "bead-on-string" structure in the formation of complexes was supposed to exist through spectroscopy, electrophoresis and transmission electron microscopy (TEM) technology. The construction of PEI/DNA complexes is related closely to the characteristics of PEI and DNA plasmid. As well as the dominant electrostatic effects, the nonelectrostatic interactions were thought to be partially responsible for the presence of PEI/DNA complexes even in the high ionic strength. The surface charge of complexes particles increased with the N/P ratio, but the absolute value of zeta potential was lower at the N/P ratio of 8 and 12, perhaps attributed to the use of larger DNA plasmid. As a result, the repulsion between particles was decreased and prone to aggregate to the structure like a clustered grape-string in the solution. Interestingly, contrast to the formation behavior of complexes, the PEI/DNA complexes aggregated primarily due to hydrophobic interactions while electrostatic attractions play a little role in the complexes particles aggregation in different concentrations of salt solutions. Comparable transfection efficiency in HepG2 cells was observed for the Lipofectamine 2000 and PEI/DNA complexes at the N/P ratio of 12, and showed that larger or aggregable complexes could transfect the cells in some different mechanisms.
DNA ; genetics ; Drug Carriers ; Gene Transfer Techniques ; Genetic Therapy ; Polyethyleneimine ; chemistry ; Transfection

OBJECTIVETo investigate the screening methods for identifying the populations susceptible and resistant to noise-induced hearing loss (NIHL) and to provide a reference for future research.

METHODSWorkers who were exposed to 75 ∼ 120 dB noise in enterprises were included in the study. Field investigation of occupational health was conducted; workers' basic information and data on hearing threshold levels were collected. Paired chi-square test was used to compare each two of three screening methods, which were used at home and abroad to identify noise-susceptible and noise-sensitive populations, in terms of noise exposure level, general information, and noise-induced hearing threshold shift.

RESULTSThere were no significant differences in the noise exposure level, basic information, and left and right ears' hearing threshold levels of noise-susceptible and noise-sensitive populations between each two of the three screening methods (P > 0.05), according to the paired chi-square test. However, high-frequency hearing threshold had statistically significant difference among the three methods. As a whole, methods B and C were superior to method A.

CONCLUSIONThe workers in China are younger than before, with more awareness of self-protection, and individual protection is enhanced in them. Currently, method B is more suitable for screening out the population susceptible to NIHL in China.

Adult ; China ; Disease Susceptibility ; Female ; Hearing Loss, Noise-Induced ; diagnosis ; Humans ; Male ; Mass Screening ; Noise, Occupational ; adverse effects ; Surveys and Questionnaires ; Young Adult

Using of two-step integrating technology, transducted the H and L chain gene of humanized Fab fragment of anti-HB-sAg antibody into the genome of methylotropic yeast P. pastoris. Constructed a engineering yeast to produce humanized Fab fragment of the anti-HBsAg antibody. The Fab fragment was efficiently secreted into the medium at a concentration of 50-80 mg/L. The Fab fragment was purified from culturing supernatant of the recombinant yeas by affinity chromatography. The ELISA analysis showed the high affinity of the expressed humanized Fab fragment to the HBsAg.
Chromatography, Affinity ; Cloning, Molecular ; Enzyme-Linked Immunosorbent Assay ; Hepatitis B Antibodies ; biosynthesis ; genetics ; isolation & purification ; Hepatitis B Surface Antigens ; immunology ; Humans ; Immunoglobulin Fab Fragments ; biosynthesis ; genetics ; isolation & purification ; Pichia ; genetics ; Recombinant Proteins ; biosynthesis ; isolation & purification

Objective: To investigate the value of bedside echocardiography in diagnosis and risk assessment of in-hospital death of patients with Stanford type A aortic dissection. Methods: The clinical data of 229 patients with Stanford type A aortic dissection diagnosed by CT angiography in Zhongshan Hospital affiliated to Fudan University between January 2009 and January 2016 were retrospectively analyzed. The patients were divided into survival group(191 cases)and non-survival group(38 cases)according to presence or absence of in-hospital death. The bedside echocardiography features were analyzed, and influence factors of in-hospital death were determined by multivariate logistic regression analysis. Results: (1) Compared with the survival group, the non-survival group had lower surgery rate (60.52%(23/38) vs. 85.34%(163/191), P<0.01). Age, gender and Debakey classification were similar between survival group and death group (all P>0.05). (2) The bedside echocardiography results showed that prevalence of aortic valve involvement(65.79%(25/38) vs.34.03%(65/191), P<0.01) and severe aortic regurgitation (44.74%(17/38) vs. 14.14%(27/191), P<0.01) were significantly higher in non-survival group than in survival group. The non-survival group had larger aortic root diameter than the survival group ((55.5±6.4)mm vs. (42.3±7.8)mm, P<0.01). There were no significant differences in pericardial effusion, expansion of aortic sinus, and left ventricular ejection fraction between survival group and non-survival group (all P>0.05). (3) The multivariate logistic regression analysis showed that aortic valve involvement(OR=3.275, 95%CI 1.290-8.313, P<0.05), aortic root diameter(OR=1.202, 95%CI 1.134-1.275, P<0.01), and surgery (OR=0.224, 95%CI 0.079-0.629, P<0.01) were independent risk factors for in-hospital death in patients with Stanford type A aortic dissection. Conclusions Bedside echocardiography has significant diagnostic value for Stanford type A aortic dissection. Aortic valve involvement, enlargement of aortic root diameter and without surgery are independent risk factors for patients with Stanford type A aortic dissection.