Female ; Humans ; Hyperkeratosis, Epidermolytic ; pathology ; Infant, Newborn

ObjectiveTo investigate the distribution of human immunodeficiency virus-1 (HIV-1)subtypes and the relationship with transmission routes in Shenzhen city. MethodsThe epidemiological survey was conducted in 429 subjects with HIV-1 infection.Vein blood was collected and prepared with anticoagulation.Thereafter,the viral nucleic acid was extracted and subsequently amplified for HIV-1 env,gag genes by reverse transcription nested polymerase chain reaction. The viral sequences were analyzed using Mega software and compared with those in HIV database. The HIV-1 subtypes were confirmed and evolutionary tree was established. The gene discrete rate of different subtypes was calculated.ResultsFour hundred qualified samples were identified as CRF01_AE (n=207),CRF07_BC (n=115),CRF08 _BC (n=14),CRF02_AG (n=1),B (n=49) and C(n=14),respectively.CRF01_AE was the predominant subtype that was detected in the subjects with different transmission routes,such as homosexual contact,heterosexual contact,intravenous drug use and hospital-acquired infection. Among these,sexual contact was the most common route.There were nine cases infected with subtype B HIV-1 in 10 case who were blood borne. The gene discrete rate was more significant in subtype B HIV-1 compared to the other subtypes.According to the evolutionary tree analysis,the viruses under the same subtype formed the relatively independent clusters by different transmission routes. But some overlaps were observed as well. Conclusions Tbere are many HIV-1subtypes in HIV-1 infected subjects in Shenzhen, while the recombinant viruses present as the predominant form.Transmission routes are various with sexual contact as the most common route.Every subset distributes unevenly and forms its own characteristic.Overlap can be observed among the gene distribution of different HIV-1 subtypes.

Humans ; Oral Surgical Procedures ; education ; methods ; Surgery, Oral ; education ; manpower ; trends

Adult ; Biopsy ; CD3 Complex ; metabolism ; DNA Nucleotidylexotransferase ; metabolism ; Female ; Humans ; Leukemia, Biphenotypic, Acute ; metabolism ; pathology ; Lymph Nodes ; metabolism ; pathology ; Neck ; PAX5 Transcription Factor ; metabolism ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; metabolism ; pathology

Macrophages,as an important member of innate immune system,constitute a major component of the microenvironment of tumours,and play an important role in the occurrence and development of tumor.According to particular phenotypes and functions,macrophages can be divided into M1 macrophages and M2 macrophages.In the research of breast cancer,lung cancer,gynecological malignancies,researchers have found that tumor-associated macrophage has the similar phenotype and function of M2 macrophages.Tumor-associated macrophage can promote the formation of new blood vessels and lymphatic vessels in tumor tissue,thus contributing to the occurrence and development of tumor.The relation between tumor-associated macrophage and poor prognosis was also be found.The tumor microenvironment can affect the phenotype and function of macrophages,such as TGF,IL-10 and PGE-2.This paper reviewed the role and mechanism of macrophages in the tumorigenesis.

AIM: To investigate the role of epigenetic modification in Pdx-1 gene transcription and expression, and to compare the differences between epigenetic modifications of Pdx-1 gene promoter in various cell types of mice. METHODS: The promoter DNA methylation and histone modification status of Pdx-1 and MLH1 genes in NIT-1 cells, NIH3T3 cells and mouse embryonic stem cells were measured by chromatin immunoprecipitation-real time PCR method. The expression levels of these genes in the three cell lines were measured by real time RT-PCR. The relation between epigenetic modifications and gene expression was analyzed. RESULTS: (1) Compared to mES cells, there was lower DNA methylation and higher H3K4m3 modification levels in the promoter of Pdx-1 gene in NIT-1 cells (P<0.05). DNA methylation, H3 acetylation, H3K4m3 and H3K9m3 modification levels in the promoter of Pdx-1 gene in NIH3T3 cells were distinctly increased (P<0.05). (2) Pdx-1 gene transcription expressed only in NIT-1 cells. The Spearman's rho between Pdx-1 gene expression and DNA methylation (r=-0.802,P<0.01) was observed. The Pearson correlation between Pdx-1 gene expression and H3K4m3 modification (r=0.997,P<0.01) was also found. The Spearman's rho between Pdx-1 gene expression and H3K9m3 modification (r=-0.879,P<0.01) was observed. (3) No correlation between housekeeper MLH1 gene expression and epigenetic modification was found. CONCLUSION: DNA methylation, H3K4m3 and H3K9m3 modification coordinated participate to regulate and control the expression of Pdx-1 gene. It is of great significance to the differentiation of β cells from ES cells.

Objective To observe the clinical effect of percutaneous transluminal angioplasty (PTA)combined with autologous peripheral blood stem cells(PBSC)transplantation in the treatment of lower extremity ischemic disorders.Methods Fourty-two cases of lower extremity ischemic disorders in the treatment group were treated with PTA and autologous peripheral blood stem cells injection and 40 cases in control group were treated with PTA exclusively.Results All the procedures were successful.In treatment group,ABI improved from 0.32 ±0.11 to(at the 3rd month)and 0.49 ±0.13(at the 6th month)(t=-6.765,-6.040,P＜0.05)while TcPO_2 improved from(26.1 ± 2.3)mm Hg to(32.7 ±4.2)mm Hg(at the 3rd month)and(34.5 ±2.7)mm Hg(at the 6th month)(t=-8.901,-14.250,P＜0.05).In control group,ABI improved from 0.30 ±0.12 to 0.47 ±0.15 and 0.47 ±0.130=-5.631,-5.873,P＜0.05)while TcPO_2 increased from(25.9 ±2.4)mm Hg to(28.9 ±2.9)mm Hg(at the 3rd month)and(28.9 ± 2.1)mm Hg(at the 6th month)(t=-5.090,-5.389,P＜0.05).There was significant difference in TcPO_2 on follow-up between the two groups after the treatment(P＜0.05).Conclusion Autologous PBSC transplantation in combination of PTA was effective for the treatment of lower extremity ischemic disorders.PBSC injection helps to increase TcPO_2.

Objective To investigate the HBV- positive pregnant women about the knowledge of the route of hepatitis B transmission, hepatitis B hazards, health care during pregnancy, announcements of child- care to explore targeted and effective health education model with self- designed question-naires. Methods Nurses in obstetrics department carried out this questionnaire investigation in the outpa-tients of HBV- positive pregnant women, after that the results underwent statistic analysis. Results The overall knowledge of HBV- positive pregnant women in announcements of child- care, health care during pregnancy and hepatitis B hazards was not very well, and the announcements of child- care was the lowest, followed by health care during pregnancy and hepatitis B hazards. The route of hepatitis B transmission was better, but still not satisfactory. The education should highlight these areas. Well- educated women were better than those who lack education. The age between 20 to 30 years old was better. Conclusions The HBV-positive pregnant women is lack of heath knowledge, so we should gave health intervention in a multi- level, multi- stage standardized and a variety of ways.

Child ; Female ; Humans ; Lipoma ; complications ; Pharyngeal Neoplasms ; complications ; Polysomnography ; methods ; Sleep Apnea, Obstructive ; etiology

Objective To investigate the diagnostic value of technologies for arteriovenous malformation(AVM ) ,which are skull to boneless head CTA by surface shaded display technique (hereinafter referred to as the SSD‐CTA technology) .Methods Totally 27 patients of the First Affiliated Hospital of Chongqing Medical University were selected ,which were diagnosed with AVM by VCTDSA .The original data to our hospital CT workstation were imported ,SSD‐CTA technology to bone reconstruction were performed ,and the data of the two groups were compared .Another 5 patients in our hospital which were diagnosed with AVM by SSD‐CTA examination were selected ,and compared the results with DSA .Results The quality score of SSD‐CTA reconstructed image was less than that of VCTDSA ,but the diagnosis of the two technologies for AVM had no significant statistical difference (P>0 .05) .The number of AVM patients from our hospital wsa too less to do the statistical analysis .The detail resolution of SSD‐CTA was less than DSA ,but the diagnosis of SSD‐CTA was consistent with DSA .Conclusion SSD‐CTA has clinical practical val‐ue ,can be used as a check ,intracranial venous malformation diagnosis .