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Objective To investigate the effect of leukocyte-depleted intraoperative savaged blood on erythrocyte immunity and systemic inflammatory response during perioperative period patients.Methods Sixty patients required blood salvage were randomly divided into two groups by random digits table method with 30 cases each.The patients in control group were given routine autologous blood transfusion,while in observation group,the salvaged blood was filtered with a leukocyte depleting filter placed in the reinfusion circuit.Blood samples were collected from the central vein before anesthesia (T1),at the end of surgery(T2),and at 12 h (T3) and 36 h (T4) after operation in two groups.The rosette rates of RBC-C3b receptors (RBC-C3bRR) and RBC-immune complex (RBC-ICR) were determined.The leukocyte and neutrophil were counted.The plasma levels of interleukin-6(IL-6),tumor necrosis factor-alpha(TNF-α) and malondialdehyde (MDA) were measured.Results Compared with control group,the plasma level of IL-6,TNF-α,MDA at T2-T4 in observation group was decreased[T2:(17.8 ± 1.6) ng/L vs.(20.8 ± 1.3) ng/L,(17.4 ± 2.3) ng/L vs.(23.1 ± 2.1) ng/L,(4.31 ± 0.33) nmol/L vs.(4.64 ± 0.73) nmol/L;T3:(21.2 ± 2.0) ng/L vs.(24.3 ± 2.4) ng/L,(12.3 ±2.1) ng/L vs.(18.6 ±1.9) ng/L,(3.97 ±0.35) nmol/L vs.(4.43 ±0.64) nmol/L;T4:(22.0 ± 1.3) ng/L vs.(28.4 ± 1.5) ng/L,(10.6 ± 1.7) ng/L vs.(14.6 ± 2.2) ng/L,(3.45 ± 0.57) nmol/L vs.(3.95 ± 0.40) nmol/L],RBC-C3bRR at T3-T4 in observation group was increased [T3:(15.3 ± 1.3)/100 RBC vs.(12.8 ± 1.5)/100 RBC ;T4:(15.8 ± 1.2)/100 RBC vs.(13.0 ± 1.5)/100 RBC],and there were significant differences (P ＜0.05).There was no significant difference in RBC-ICR,the leukocyte and neutrophil between two groups (P ＞ 0.05).Conclusion Leukocyte-deleted intraoperative salvaged blood is helpful to improve the erythrocyte immunity during perioperative period in patients,and the decrease in the systemic inflammatory response may be involved in the mechanism.
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Objective: To investigate the innate immune response of influenza virus-infected glial cells,the transcription levels in chemokines in mouse microglia and astrocytes were detected which pre-infected by human H1N1 or avian H5N1 influenza viruses.Methods: The glial cells isolated from neonatal mice cerebral cortex were cultured and further microglia and astrocytes were purified.The primary mouse microglia and astrocytes were infected in vitro by H1N1 or H5N1 influenza viruses in a multiplicity of infection (MOI) 2.Eight hours post infection,the influenza virus nucleoprotein (NP) was detected by immunofluorescence to identify the proportion of infected cells.The cellular RNA were extracted at 6 h and 24 h to detect the transcriptional level of chemokines by semi-quantitative RT-PCR.Results: More than 95% of the microgha and astrocytes which isolated from mice were infected.The transcription levels of CCL-3,CCL-5,CXCL-2,CXCL-9 and CXCL-10 from infected microglia and astrocytes were upregulated.Futhermore,the mRNA level of CXCL-10 increased much more.In addition,avian H5N1 influenza virus could induce more stronger upregulation of those chemokines than human H1N1 did.Conclusion: The mouse microglia and astro cytes which are infected by H1N1 influenza virus or H5N1 influenza virus could induce upregulation of transcription level of chemokines.
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APOBEC(apolipoprotein B mRNA-editing enzyme catalytic-polypeptide) family members were reported as innate immune molecules with anti-viral activity for many viruses, such as HIV and HBV.In order to understand the function of APOBEC, the APOBEC-3F and-3G were cloned, expressed, and the sub-cellular localization of them was detected.The genes of APBEC-3F and-3G were cloned from PHA-stimulated PMBC and expressed in the MDCK cell by transfection.The sub-cellular localization of APOBEC-3F and-3G were detected by immunofluorescence.APOBEC-3F and-3G were cloned by RT-PCR and confirmed by DNA sequencing.The immunofluorescence indicated APOBEC-3F and-3G were located in the cytosal.APOBEC-3F and-3G could inhibit HBV replication effectively in HepG2.2.15 cell.APOBEC-3F and-3G could not be trans-located into nuclear by nuclear location signal(NLS) or bi-NLS(B-NLS).These results will help the future research on the function of APOBEC.
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Objective To study the application of super-selective external carotid artery embolization in head and neck diseases. Methods DSA and super-selective external carotid artery embolization were carried out in 41 cases of head and neck diseases including 12 cases of epistaxis,7 nasopharyngeal fibroangioma,1 traumatic arterial bleeding,14 vascular malformation,and 7 malignancies. Results No recurrence of nose bleeding after embolization of epistaxis was seen within 6 - 12-month follow up. The operative bleeding was reduced significantly by preoperative embolization in nasopharyngeal fibroangioma. No recurrence of bleeding was achieved after embolization of traumatic artery. Among the cases of vascular malformation,3 were proven to be significantly effcient,6 effcient,and 5 inefficent in the 6 - 12-month follow up. Among the 7 malignant cases,3 survived more than 2 years. Conclusion Super-selective external carotid artery embolization is safe and effective in the treatment of head and neck diseases. (J Intervent Radiol,2006,15: 330-332)