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Objective To investigate the correction between the levels of vascular endothelial growth factor (VEGF), serum amyloid A (SAA), hypersensitive C-reactive protein (hs-CRP) and acute cerebral infarction (ACI), and to provide the basis for the diagnosis and treatment of ACI.Methods A total of 76patients with ACI in the hospital from August to October 2017were selected as ACI group.In addition, 32healthy subjects underwent physical examination in the same period in this hospital were selected as negative control group (NC group).The levels of SAA and hs-CRP were detected by nephelometry, while the level of VEGF was measured by enzyme-linked immunosorbent assay (ELISA).The differences of detection indexes between two groups were compared, and the diagnostic value of each index and the combined test were evaluated with the Youden index.Results The levels of SAA, hs-CRP and VEGF in ACI group, were significantly higher than those of NC group (P＜0.01).The levels of VEGF was positively correlated with SAA and hs-CRP (r=0.434and0.631, P=0.000and 0.000).The optimal diagnostic critical points of VEGF, SAA and hs-CRP in the diagnosis of ACI were 161.93pg/mL, 3.81mg/L and 4.63mg/L, and the sensitivities were 93.55％, 65.91％and64.44％, the specificities were 60.00％, 93.75％and 90.32％, respectively.Combined detection with hs-CRP and VEGF was superior to single index detection and other joint detection.The sensitivity, specificity and Youden index of combined detection with hs-CRP and VEGF were 96.67％, 95.65％and 0.92respectively.Conclusion The levels of VEGF, SAA and hs-CRP increase in patients with ACI, and they play important roles in the diagnosis of ACI.VEGF are positively related to SAA and hs-CRP, and there may be an synergistic effect exist.VEGF may be involved in the pathological process of cerebral infarction.The combined detection of hs-CRP and VEGF is of high clinical value in the diagnosis of cerebral infarction.
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Objective To investigate the correlation between serum lipoprotein-associated phospholipase A2 (LP-PLA2) and homocysteine (Hcy) level change with cerebral infarction,and clinical value of combined detection of serum LP-PLA2,Hcy and blood lipid level in the diagnosis and differentiation diagnosis of cerebral infarction.Methods The serum lipoprotein-associated phospholipase A2,homocysteine and blood lipid in sixty-five cases of cerebral infarction(cerebral infarction group) and contemporaneous 64 healthy persons qualified in physical examination(health control group) were selected as the research subjects.The levels of serum LP-PLA2,TG,HDL,LDL,CHO and Hcy were detected.The differences were compared among various groups.Results The TG and LDL levels had no statistically significant difference between the health control group and cerebral infarction group(P>0.05),but the LP-PLA2 and Hcy levels in the cerebral infarction group were higher than those in the health control group(P<0.01),while serum HDL and CHO levels were lower than those in the health control group(P<0.01).Serum High Hcy and LP-PLA2 levels were the independent risk factors for cerebral infarction,however,high HDL was a protective factor for cerebral infarction.In the combined detection,the combined detection of LP-PLA2 and Hcy was superior to single index detection and other combined detection mode.Conclusion Serum LP-PLA2 and Hcy levels in the patients with cerebral infarction are significantly higher than those in the health control group,indicating that it may be involved in the occurrence of cerebral infarction,and may become an early biological marker for predicting cerebral infarction occurrence.The combined detection of serum LP-PLA2 and Hcy has highly clinical value in the diagnosis of cerebral infarction.
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Objective To investigate the infection status of hepatitis B virus(HBV) and hepatitis C virus(HCV) in healthy adult in Xi′an ,in order to provide references for hepatitis prevention and health education .Methods A total of 1 052 healthy adults from 10 communities in Xi′an were collected by using multistage stratified random sampling method .HBV serum markers and anti‐HCV antibody were detected ,and characteristics of distribution of HBV and HCV infection were analysed .Results A total of 37 adults were observed with positive hepatitis B surface antigen(HBsAg) ,the total positive rate was 3 .52% ,and the positive rate of male and female was 4 .08% and 3 .07% respectively ,no statistically significant difference was found between male and female(P>0 .05) .Apart from male adults aged 30 - 0 .05) .A total of 31 adults were observed with HBsAg ,hepatitis B e antibody (HBeAg)and hepatitis B core antibody(HBcAb) positive ,the positive rate was 2 .95% .The positive rate of hepatitis B surface antibody(HBsAb) was 54 .18% .Serological patterns between different gender had no statistically signifi‐cant differences(P>0 .05) .A total of 9 adults(0 .86% ) were observed with positive anti‐HCV antibody ,and the positive rate of male and female was 0 .64% and 1 .02% respectively ,no statistically significant difference was found between male and female(P>0 .05) .Conclusion Healthy adults in Xi′an have relatively low infection rates of HBV and HCV ,while for the control of hepatitis B and hepatitis C ,further strengthening the health education ,improving awareness of prevention and routine monitoring infectious dis‐eases and vaccination may still be necessary .
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Objective To investigate the relationship between levels of transferring(Tf)and function of male fertility and testic-ular podocyte.Methods Semen samples from male patients with infertility and volunteers with normal infertility were collected and tested for sperm density and motility by using sperm quality analyzer.In additon to that,Tf concentrations of Tf were determined;aseptically excised rat testis and by collagenase and hyaluronidase digestion,podocytes were isolated with high purity and cultured in culture medium,then the concentration of Tf in cell culture medium was determined;Tf concentration were determined by rate nephelometry.Results Tf concentration in semen of male-infertility patients[(15±5)μmol/L]was significantly lower than that of normal-fertility volunteers[(24.5±6.5)μmol/L,P <0.01],which were positively correlated sperm count and motility(P <0.01). Tf concentrations of cell culture medium[(25 ±8)μmol/L]in which testicular podocytes were cultured were significantly higher than that of infertile rat[(15 ±6)μmol/L,P <0.01].Conclusion Determination of semen Tf levels can reflect podocyte function and be used as an indicator for the evaluation of seminiferous tubules spermatogenesis,which was valuable in the diagnosis and treatment of male infertility.
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Objective To investigate the serum levels of tumor markers CEA,CA724,PGⅠ,PGⅡ,PGI/PGII and SF in gas-tric cancer.Methods The serum levels of CEA,CA724,PGⅠ,PGⅡ,PGI/PGII and SF were detected in 46 healthy con-trols,45 atrophic gastritis patients and 39 gastric cancer patients.Serum levels of CEA,CA724 were measured by ELC meth-od,PGⅠ,PGⅡ by time resolved fluorescence immunoassay (TRFIA)and SF by immunoturbidimetry(ITM).Results ①Compared to the healthy controls,the statistical contrast of serum levels of CEA,CA724,PGⅠ,PGⅡ and PGI/PGII except SF was significant in gastric cancer patients(P<0.05),only PGⅠ,PGⅡ,SF had significant difference in atrophic gastritis patients (P<0.05).Compared to atrophic gastritis patients,the serum levels of CEA,CA724 were significantly higher,but PGⅠwas lower in gastric cancer patients(P<0.05).②When CEA,CA724,PGⅠ,PGⅡ,PGI/PGII and SF were used to di-agnose gastric cancer individually,the sequence of the area under ROC curve was CEA,SF,CA724,PGI/PGII,PGⅡ and PGⅠ.Only the areas of PGⅠ,PGⅡunder ROC curve had significant statistical difference (P<0.05).③The sensitivity,speci-ficity,PPV and NPV were different when these indexes were used to diagnize gastric cancer individually or incorporatedly. Conclusion The serum levels of tumor markers CEA,CA724,PGⅠ,PGⅡ,PGI/PGII and SF had important reference value for the diagnosis of gastric cancer although the diagnostic value was different individually or incorporatedly;the content of serum PG and the ratio of PGI/PGII were closely related to the gastric mucosa.
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Objective To detect the isoniazid (INH) and rifampin (RIF) resistance of Mycohaeterium tuberculosis isolates in the single tube with multiplex-polymerase chain reaction-single strand conformation polymorphism(muhi-PCR-SSCP) system. Methods According to the sequences of inhA, katG and rpoB genes of the Mycohacterium tuberculosis, three pairs of oligonucleotide primes were designed to examine the INH and RIF resistance with the multi-PCR-SSCP. The validity of the newly developed method was evaluated with 116 clinical isolates of Mycohacterium tuberculosis( 70 isolates that were INH-resistant and 66 isolates that were RIF-resistant). Results The validity of the method was assessed with multiplex PCR-SSCP with the bacteria culture with susceptibility test as golden standard. The three genes, katG, inhA and rpoB, in the 116 clinical isolates and H37Rv strain were amplified successfully in single PCR reactions,except 4 isolates with katG deletion mutants. Compared with strain H37Rv, forty-six isolates had katG gene mutations, thirteen had inhA mutations and fifty-eight had rpoB mutations. Thirty-eight isolates had simultaneous katG and rpoB mutations and 4 isolates had both inhA and rpoB mutations. Four isolates had inhA and katG mutations and 2 isolates had mutations in all three genes simultaneously. The sensitivity of the newly developed multiplex-PCR-SSCP assay was 80% and 82% for INH and RIF, respectively. The specificity of the assay was 100% and 92% for INH and RIF, respectively. Conclusion Muhiplex-PCRSSCP provides a rapid, specific and cost-effective method of detecting multidrug-resistant TB. It laid a solid foundation for the further study of drug resistant gene.