Objective To investigate the dynamic expressions and clinical significance of CD141, CD31 and CD95 on circulating endothelial cells (CEC) in febrile and polyuria phases of patients with hemorrhagic fever with renal syndrome (HFRS). Methods Expressions of CD141, CD31 and CD95 in the peripheral blood of patients with HFRS in febrile and polyuria phases were detected by flow cytometry. Comparisons among groups were done by one-factor analysis of variance. Results The percentages of CD141+ CD31+ cells in the peripheral blood cells from patients with HFRS in febrile and polyuria phases were 9.47% ±1.98 % and 8. 26% ±1.55 %, respectively, which were both higher than that (7.05%±1.45%) in healthy controls (F=8. 42; P=0. 000 and P=0. 029, respectively), and that in febrile phase was higher than that in polyuria phase (P = 0. 048). The mean fluorescent intensity (MFI) of CD95 on CEC of HFRS patients in febrile and polyuria phases were both significantly higher than that in healthy controls (F=19. 93; P=0. 000 and P=0. 000 respectively), and that in febrile phase was higher than that in polyuria phase (P=0. 049). In the febrile phase of HFRS,the MFI of CD95+ on CEC in patients with all clinical types were all higher than that in healthy controls (F= 17. 36; all P=0. 000), and that in severe (critical) type was the highest and higher than those in mild type and moderate type (P=0. 002 and P=0. 009, respectively). Conclusion The proportion of CEC and expression of CD95 on CEC are possibly related with the phase and severity of HFRS.

Objective To explore the association of Gly71Arg mutation in gene of bilirubin uridine 5'-diphosphate-glucuronosyltransferase(UGT1A1)and neonatal jaundice in Beijing city Han population.Methods The genotypes and alleles of the Gly71 Arg polymorphism for UGT1A1 gene were identified by polymerase chain reaction-restricted fragment length polymorphism assay in infants of Beijing city Han population of China,including 96 infants with neonatal jaundice[serum bilirubin(307.06?38.5)?mol/L,indirect bilirubin(292.9?35.9)?mol/L] and 101 healthy control infants [serum bilirubin(131.2?42.1)?mol/L,indirect bilirubin(126.3?39.7)?mol/L].The genotypes and allele frequencies of the polymorphism were compared between infants with neonatal jaundice group and healthy infant group(control group).The effect of polymorphism in infants with neonatal jaundice group on serum bilirubin level were analyzed.Results There were significant differences in genotypes distribution in Gly71Arg polymorphism for UGT1A1 gene between the 2 groups(?2=9.47 P=0.002).Compared with control group,neonatal jaundice group had significantly higher Arg allele frequency in the polymorphism for UGT1A1 gene(?2=10.34 P=0.001).There were independent effects of Gly71Arg mutation in the gene on serum bilirubin level in neonatal jaundice group,at the carriers of homozygote of the Arg allele of Gly71Arg polymorphism had higher serum bilirubin levels compared to carriers of heterozygote of the Arg allele of the polymorphism and non-carriers of the Arg allele of the polymorphism(Pa

To cultivate applied capability of bioengineering students, five aspects should be done: optimization of experiment teaching system, reformation of experiment teaching mode, intensifying management of experiment teaching, increase of new experiments related tightly to scientific research, and training students’ self-study capability.

Objective: To explore the dynamic regulation of histone acetylases p300 and p300/CBP associated factor (PCAF) on cardiac development gene NKX2.5 during cardio-genesis and to provide the new theoretical basis to clarify the regulatory mechanism for cardio-genesis in fetal mice.
Methods: Our research included 4 groups of cardiac tissues: Embryo (EB) 14.5 days group,n=10, EB 16.5 days group, n=10 and Neonatal 0.5 day group,n=5, Neonatal 7 days group,n=3. Immunoprecipitation was performed in myocardial tissues using anti-p300, anti-PCAF and anti-H3K9ac antibodies to retrieve p300, PCAF and H3K9ac binding DNA, the speciifc DNA sequences were ampliifed by real-time PCR to detect and the binding levels of p300, PCAF and the acetylation level of H3K9ac in NKX2.5 promoter sequence. In addition, the mRNA expression of NKX2.5 was examined by RT-PCR.
Results: The binding levels of p300 and PCAF had the timing consequence at different stage of cardio-genesis. The binding level of p300 in EB 16.5 days group (0.063 ± 0.021), Neonatal 0.5 day group (0.019 ± 0.008), Neonatal 7 days group (0.011 ± 0.003) were all lower than that in EB 14.5 days group (0.231 ± 0.033), and in Neonatal 0.5 day group and Neonatal 7 days group were lower than EB 16.5 days group, allP<0.05. The binding level of PCAF in EB 16.5 days group (0.063 ± 0.021), Neonatal 0.5 day group (0.019 ± 0.008), Neonatal 7 days group (0.011 ± 0.003) were all lower than that in EB 14.5 days group (0.185 ± 0.023), allP<0.05. The H3K9ac acetylation level and NKX2.5 mRNA expression level had the timing consequence at different stage of cardio-genesis. H3K9ac acetylation level in EB 16.5 days group (0.098 ± 0.014), Neonatal 0.5 day group (0.074 ± 0.010), Neonatal 7 days group (0.045 ± 0.014) were all lower than that in EB 14.5 days group (0.119 ± 0.020), and in Neonatal 7 days group was lower than EB 16.5 days group, allP<0.05. The NKX2.5 mRNA expression level in EB 16.5 days group (0.701 ± 0.181), Neonatal 0.5 day group (0.502 ± 0.159), Neonatal 7 days group (0.529 ± 0.13) were all lower than that in EB 14.5 days group (1.000 ± 0.130), allP<0.05.
Conclusion: Histone acetylases p300 and PCAF may dynamically regulate H3K9ac acetylation in NKX2.5 promoter sequence, and the mRNA of NKX2.5 was dynamically expressed during cardio-genesis in experimental fetal mice.

Adolescent ; Adult ; Aspergillosis ; complications ; microbiology ; Aspergillus ; isolation & purification ; Candida albicans ; isolation & purification ; Candidiasis ; complications ; microbiology ; Female ; Follow-Up Studies ; Granulomatosis with Polyangiitis ; complications ; microbiology ; pathology ; Humans ; Male ; Middle Aged ; Mucor ; isolation & purification ; Mucormycosis ; complications ; microbiology ; Nocardia ; isolation & purification ; Nocardia Infections ; complications ; microbiology ; Retrospective Studies ; Young Adult

Objective:To evaluate the safety and feasibility of the in-situ needle fenestration combined with the in vitro physician modified fenestration technique to reconstruct supra-aortic branches during thoracic endovascular aortic repair (TEVAR) for aortic arch lesions requiring landing at Z0 and Z1.Methods:From Nov 2017 to Dec 2019, eighteen patients who underwent both the in-situ needle fenestration and the in vitro physician modified fenestration techniques to extend the proximal landing zone to Z0 and Z1 during TEVAR were included in our study.Results:Sixteen patients underwent in vitro physician modified fenestration ,two patients underwent in vitro physician modified fenestration to reconstruct both the left common carotid artery and the innominate artery. All eighteen patients received in-situ needle fenestration to preserve the left subclavian artery. Supra aortic branches were preserved in all patients (38/38, 100%). There was no Type Ⅰ endoleak. Type Ⅱ endoleak was found in four paitnets (4/18). Type Ⅲ endoleak occurred in one patient (1/18). Type Ⅳ endoleak in four patients (4/18). Type Ⅲ endoleak needed open aortic arch repair 6 months later. The median follow-up time was 12 months. One (1/18) died in 12 months and the other patients were doing well.Conclusions:The joint application of the in-situ needle fenestration and the in vitro physician modified fenestration to reconstruct supra-aortic branches during TEVAR for aortic arch pathologies requiring landing at Z0 and Z1 was satisfactory.

Objective of this study was to detect the expression of HtrA2 and WT1 mRNA in acute myeloid leukemia (AML) and investigate the relationship of their expression levels with clinical variates and correlation between them. The expression levels of HtrA2 and WT1 were measured by RQ-PCR in bone marrow cells in 104 newly diagnosed AML patients and leukemia cell lines (K562, HL-60, NB4, Kasumi-1, U937), and the relationship between expression level and clinical parameters (age, sex, WBC count, diagnosis and prognosis) was investigated. The results showed that (1) the expression of HtrA2 gene in newly diagnosed AML was lower than that of the normal controls (P < 0.01), while expression of WT1 gene in newly diagnosed AML was higher than that of the normal controls (P < 0.01), the expression levels of HtrA2 and WT1 genes both did not correlate with age, sex and WBC counts of patients. There were no significant difference of HtrA2 gene expression between different NCCN prognosis group, while WT1 gene expression in better-risk group was significantly lower than that in intermediate-risk group (P = 0.003). The HtrA2 expression level rose after treatment in both CR group and non-CR group (P < 0.05), while WT1 expression level significantly decreased after treatment only in CR group (P < 0.01). Negative correlation between HtrA2 and WT1 expression was also observed (r = -0.249, P = 0.011). It is concluded that the low expression of HtrA2 and high expression of WT1 are closely related with occurrence and development of acute leukemia, so up-regulating expression of HtrA2 and interfering expression of WT1 may become the targets for leukemia therapy in the future.
Adolescent ; Adult ; Aged ; Cell Line, Tumor ; Female ; High-Temperature Requirement A Serine Peptidase 2 ; Humans ; Leukemia, Myeloid, Acute ; genetics ; metabolism ; Male ; Middle Aged ; Mitochondrial Proteins ; genetics ; metabolism ; Serine Endopeptidases ; genetics ; metabolism ; WT1 Proteins ; genetics ; metabolism ; Young Adult

OBJECTIVETo study the molecular genetics characteristics of Jk(a-b-) phenotype of blood donors from Chengdu.

METHODSExons 4-11 of the JK genes and their flanking intronic regions for 8 Jk(a-b-) samples were analyzed with PCR-sequence specific primers (PCR-SSP) and DNA sequencing.

RESULTSAll samples had AA genotype at position 838 of exon 9 predicting a null Jk(b)-like alleles. Sequence analysis has revealed 4 mutant alleles, which included: (1) IVS5-1G>A, A to G at position 588 (Pro196Pro) of exon 7; (2) G to A at position 896 (Gly299Glu) of exon 9, A to G at position 588 (Pro196Pro) of exon 7; (3) IVS5-1G>A, C>A at position 222 (Asn74Lys) of exon 5, A to G at position 499 (Met167Val) of exon 7, A to G at position 588 (Pro196Pro) of exon 7; and (4) IVS5-1G>A, G to A at position 896 (Gly299Glu) of exon 9, A to G at position 588 (Pro196Pro) of exon 7.

CONCLUSIONIVS5-1G>A, C to A at position 222 (Asn74Lys) of exon 5 and G to A at position 896 (Gly299Glu) of exon 9 might have been the molecular genetic mechanisms underlying Jk(a-b-) phenotype of the selected blood donors.

Alleles ; Base Sequence ; Blood Donors ; China ; Exons ; Genotype ; Humans ; Introns ; Kidd Blood-Group System ; genetics ; Mutation ; Phenotype

This study was purposed to identify endothelial nitric oxide synthase (eNOS) mRNA in human RBCs during storage and to investigate the relationship of its changing profile and preservation time at 4°C. RT-PCR and gene sequencing were applied to identify eNOS-mRNA in banked RBC. Real time PCR was used to study the relationship of eNOS-mRNA expression and preservation time. The results showed that eNOS mRNA was detected in RBC. Compared with fresh RBC, the content of eNOS mRNA in RBC was 0.868 ± 0.119 stored for 1 week, which was 0.379 ± 0.289, 0.108 ± 0.134, 0.141 ± 0.141, 0.125 ± 0.12 stored for 2, 3, 4 and 5 weeks respectively. It is concluded that eNOS mRNA exists in human RBC and its content is decreasing gradually along with the prolongation of storage time in banked RBC. Stored for 3 weeks, the content of eNOS-mRNA remains to be at lower level of concentration in human RBC.
Blood Donors ; Blood Preservation ; Erythrocytes ; metabolism ; Humans ; Nitric Oxide Synthase Type III ; genetics ; metabolism ; RNA, Messenger ; genetics ; metabolism

Aged ; Biomarkers ; metabolism ; Brain-Derived Neurotrophic Factor ; metabolism ; Female ; Humans ; Incidence ; Middle Aged ; Nerve Growth Factor ; metabolism ; Quality of Life ; Surveys and Questionnaires ; Urinary Bladder, Overactive ; metabolism