Objective\ To exam the expression and the distribution of the aromatase mRNA in the brain of the mouse. Methods\ RNA dot\|blotting as well as in situ hybridization technique were used. Results\ (1)There were aromatase specific mRNA expression in the brain tissue during the period from E16 to P300,the highest levels of mRNA were detected at postnatal 6 days,and the lowest levels were found at adulthood.(2)The location of the aromatase mRNA was confined to neuronal(but not glial)cell bodies and their processes.(3)The mainly distribution of aromatase mRNA was detected in the regions of the cerebral cortex,thalamus,hypothalamus and limbic system.Many heavily labeled cells were found in the layer of pyramidal cells of cerebral cortex,medial preoptic area.medial septal nucleus,pyramidal layer of hippocampus,amygdaloid nuclei.cingulate cortex,piriform cortex and periamygdaloid cortex.The moderately dense signal was present in several thalamic and hypothalamic nuclei such as ventromedial nucleus,ventrolateral nucleus,laterodorsal thalamic nucleus,paraventricular nucleus,etc. Conclusion\ There was relationship between the gene expression of aromatase with the development of brain,there was good agreement between the distribution of aromatase mRNA and aromatase activity as previously reported.The high levels of aromatase mRNA in the region of hippocampus and cerebral cortex suggested that aromatase may implicate for sex dimorphism in cognition as well as learning and memory.\;

Objective To identify a potential correlation between cold hemoagglutinin(CHA) and diffuse panbronchiolitis(DPB) in Chinese patients.Methods Eighteen patients diagnosed as DPB from December 1996 to July 2008 in Peking Union Medical College Hospital and 60 cases of DPB reported in mainland of China from 1996 to 2008 were enrolled in the study.Results Of 18 patients diagnosed as DPB in Peking Union Medical College Hospital,only one patient showed a titer of CHA≥1:64.Of 60 cases in mainland China,48 cases were CHA positive.CHA was positive in 54.1% all cases.There may be some correlation between positive rate of CHA and medication as well as population.Conclusion Low positive rate of CHA in Chinese subjects,which is different from that of Japanese DPB patients,suggests that CHA may not be applied as a diagnostic criteria for Chinese patients.

Objective To observe the relationship of blood serum bilirubin level with coronary heart disease and the degree of coronary artery narrowing. Methods A total of 126 patients were divided into the coronary disease group (83) and the control group (43). According to the coronary artery narrowing integral, the 83 patients in the coronary disease group were divided into three subgroups: mild narrowing group (15 people), moderate narrowing group (35 people), and severe narrowing group (33 people). The coronary arteriography of the patients in the control group was normal. 5mL venous blood was drawn on empty stomach, and the enzyme method was used to determine glycerin, the total cholesterol, the low density lipoprotein cholesterol, the high density lipoprotein cholesterol, and the blood serum bilirubin. Results The blood serum total bilirubin in the coronary disease group was (12.30?3.84)?mol/L, direct bilirubin was (4.07?1.45)?mol/L, and indirect bilirubin was (8.23 ? 2.82 )?mol/L. The total bilirubin in the normal group was (14.59?4.37)?mol/L, direct bilirubin was (4.66 ? 1.55 )?mol/L, and indirect bilirubin was (9.93?3.33)?mol/L. The total bilirubin, indirect bilirubin and direct bilirubin were lower in coronary disease group than in normal group (P0.05). Conclusion The blood serum bilirubin level and coronary disease have remarkable negative correlation, and the blood serum bilirubin level of patients with coronary disease is lower than that of healthy people. ② The blood serum bilirubin level and the degree of coronary artery narrowing do not have remarkable correlation.

Objective To explore the gene expression of aromatase and estrogen receptor (ER-?) in malignant glioma cell line SHG-44. Methods Cell culture, immunocytochemistry, in situ hybridization and RT-PCR techniques were used. Results Aromatase and estrogen receptor gene expressions were detected in SHG-44 cells.The aromatase gene in these cells was expressed by means of the multi promoters (1^3, 1^4 and P Ⅱ).Conclusion It may provide some new data for the hormone regulation in carcinoma of nerve system.

With development of bio-technique, more and more proteins were applied as clinical approaches. However, the protein homogeneity, especially the N-glycosylation limited the further research and application of these protein drugs. The analysis method for N-glycans is believed to be critical in protein drugs development. To enhance the N-glycans isolation efficiency and accelerate the pretreatment, a new strategy was built on ultrafiltration-devices. New methods increased the isolation efficiency of N-glycans containing N-acetylglucosa mine with 10%-20%. The degrading of N-glycans containing sialic acids was also minimized with this method. 20%-100% more N-glycans with sialic acids were isolated. The pretreatment was finished within 30 min. Coupled with HPLC-HRMS, an effective and reliable strategy designed for protein drugs N-glycans analysis were developed.
Glycoproteins ; chemistry ; Glycosylation ; Polysaccharides ; chemistry ; Ultrafiltration ; instrumentation

The study aims to establish a quantitative nuclear magnetic resonance (QNMR) method for the determination of the absolute content of bosentan. Proton nuclear magnetic resonance spectroscopy [1H NMR] spectra were obtained in CDCl3 with the internal standard dimethyl terephthalate and zg30 pulse sequence by using a Bruker AVANCE II 400 spectrometer. The content of bosentan is determined with QNMR in comparison with the result obtained by mass balance method. The result is 96.25% by QNMR and 96.54% by mass balance method. A rapid and accurate QNMR method has been established for the quantitative determination of the absolute content of bosentan. The study provides a new way for the quality control and calibration of a new reference standard material, it could be the complementary with the mass balance method for the assay of standard reference.
Calibration ; Magnetic Resonance Spectroscopy ; methods ; Molecular Structure ; Protons ; Quality Control ; Sulfonamides ; chemistry

Objective To evaluate the effects of combined detection of sputum and serum procalcitonin (PCT) to identify the etiology of community acquired pneumonia(CAP) in infants.Methods Retrospective analysis from August 2010 to September 2012 enrolled 435 patients with definitely etiological diagnosis of CAP.The all cases were divided into three groups according to the etiological diagnosis:243 cases of bacterial infection group(including mixed bacterial infection),106 cases of viral infection group,and 86 cases of mycoplasma infection group.Sputum and serum PCT levels in all cases were detected,with simultaneous detection of blood leukocytes,C-reactive protein levels.Results Sputum PCT level of bacterial infection group [(8.44 ± 1.08) ng/ml] was significantly higher than viral infection group [(0.32 ±0.12) ng/ml] and mycoplasma infection group [(0.24 ± 0.17) ng/ml],which showed statistically significant difference (F =765.03,P ＜0.01).Serum PCT level of bacterial infection group [(6.69 ± 1.36) ng/ml] was also higher than viral infection group [(0.37 ± 0.22) ng/ml] and mycoplasma infection group [(0.42 ± 0.28) ng/ml],the difference of which was statistically significant (F =240.46,P ＜ 0.01).Meanwhile between the viral infection group and mycoplasma infection group,sputum PCT and serum PCT showed no significant difference (P ＞ 0.05).The levels of blood leukocytes and C-reactive protein among 3 groups showed no statistically significant difference(P ＞ 0.05).As the critical value of the PCT ＞ 0.5ng/ml,the positive rates of sputum and serum PCT were significant difference in bacterial infection group (86.83％ vs 73.66％,x2 =13.92,P ＜0.05).The sensitivity of diagnosing bacterial CAP by sputum and serum PCT levels were 86.83％ and 73.66％,the specificity were 86.98％ and 88.54％,respectively.The sensitivity and specificity of combined detection sputum and serum PCT were 72.02％ and 94.27％.Conclusion Combined detection of sputum and serum PCT has clinical value and efficiency in pathogen identification of CAP.

[ ABSTRACT] AIM:To investigate the effect of microRNA-132 ( miR-132 ) transfection on the lipopolysaccharide ( LPS)-induced inflammation in rat alveolar macrophages.METHODS:The rat alveolar macrophage NR8383 cultured with-out pyrogen in vitro were divided into blank control group, negative control group and transfected group.The cells in the 3 groups were transfected with phosphate buffer solution ( PBS) , Lipofectamine 2000 and synthesized miR-132 mimic respec-tively.The cell proliferation was detected by Cell Counting Kit-8 ( CCK-8) assay.Real-time PCR was used to detect the ex-pression of miR-132 in the cells.After NR8383 cells were stimulated with LPS for 6 h, the NF-κB DNA-binding activity was measured by electrophoretic mobility shift assay ( EMSA) .The expression of tumor necrosis factor-α( TNF-α) and interleu-kin-6 (IL-6) in NR8383 cells was assayed by Western blotting.RESULTS: After transfection, the expression of miR-132 was significantly higher than that in blank control group and negative control group.The growth of NR8383 cells in transfect-ed group was significantly inhibited compared with blank control group and negative control group ( P<0.05 ) .After the cells were stimulated with LPS, the productions of NF-κB, TNF-αand IL-6 in transfected NR8383 cells were decreased com-pared with blank control group and negative control group (P<0.05).CONCLUSION:Transfection of alveolar macropha-ges with miR-132 significantly suppresses the cell growth, and inhibits inflammatory responses induced by LPS.

Objective To investigate the allele polymorphism and characteristic of HPA-1-17 genotyping of Li ethnic on Hainan island,and to evaluate the HPA mismatched ratio between donor and recipient in randomly chosen cases of blood transfusion,in order to investigate the platelet transfusion refractoriness in Li population.Methods Genotyping tests of A-1—17 allele of the blood sample from 180 Lis were conducted with PCR-SSP.Results A total of 180 blood samples were genotyped successfully in HPA genetic system,among which 0.9972 were HPA-2a,0.0028 were HPA-2b,0.4889 were HPA-3a,0.5111 were HPA-3b,0.9667 were HPA-5a,0.0333were HPA-5b,0.9972 were HPA-6a,00028 were HPA-6b,0.4250 were HPA-15a,0.05750 were HPA-15b,and they all showed polymorphism. But polymorphism was not detected out in other allelic genes,such as HPA-1,-4,-7—14,-16,and -17. The bb homozygous were detected in two alleles,among which 0.2834 was HPA-3 and 0.3667 was HPA-15,but it wasn't detected in the others systems. In the randomly chosen cases of blood transfusion,the mismatch rate of HPA-3 ,HPA-15 and HPA-5 was 37.49%,36.93% and 6.23%,respectively.Conclusion This research revealed the distribution of HPA gene in Li population on Hainan island,and found the allelic frequency and thier characteristics. According to our findings,HPA-2,HPA-3,HPA-5 and HPA-15 genes between donor and recipient should be matched in order to avoid platelet transfusion refractoriness.