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Objective To study the expression of Gli1 protein and vascular endothelial growth factor (VEGF)-C in papillary thyroid carcinoma and their relationship with cervical lymph node metastasis.Methods The expression of Gli1 protein and VEGF-C were investigated by immunohistochemical EnVision method in 67 cases of papillary thyroid carcinoma and 32 cases of nodular goiter pathological specimen tissues.Nascent microvascular and micro-lymphatic of all pathological speimen tissues were examined by immunohistochemical monoclonal antibody CD34 and D2-40 staining assay respectively,and the microvascular density (MVD) and micro-lymphatic vessel density (MLVD) were calculated.The relationship between the positive expression of Gli1 protein and MVD,between the positive expression of VEGF-C and MLVD,and their relationship with cervical lymph node metastasis were analyzed.Results The positive rates of Gli1 protein,VEGF-C and MVD,MLVD were significantly higher in papillary thyroid carcinoma than those in nodular goiter [67.16％(45/67) vs.43.75％(14/32),70.15％(47/67) vs.31.25％(10/32),23.14 ± 2.06 vs.2.14 ± 0.31,13.36 ± 1.32 vs.3.53 ± 0.65,P ＜ 0.05].The positive expression of Gli1 protein was related to the patient' s age and the tumor size (P ＜ 0.05),while the positive expression of VEGF-C was not related to the patient' s age and the tumor size (P ＞ 0.05).The positive expression of Gli1 protein and VEGFC were significantly higher in TNM stage Ⅲ-Ⅳ of papillary thyroid carcinoma than those in TNM stage Ⅰ-Ⅱ (P ＜ 0.01) and also was significantly higher with cervical lymph node metastasis than without cervical lymph node metastasis (P ＜ 0.01).MVD and MLVD were significantly higher with cervical lymph node metastasis than without cervical lymph node metastasis (P ＜ 0.05).The positive expression of Gli1 protein was positively correlated with MVD (r =0.784,P＜ 0.01),the positive expression of VEGF-C was positively correlated with MLVD (r =0.529,P ＜ 0.01),the positive expression of Gli 1 protein was positively correlated with the positive expression of VEGF-C (r =0.586,P ＜0.01).Conclusions Gli1 protein which may participate in the formation of nascent microvascular is abnormally activated by the Hedgehog signaling pathway to express,VEGF-C which may be participate in the formation of nascent micro-lymphatic is mediated and started by the MAPK signaling pathways to express.Expressions of Gli1 protein is positively correlated with expressions of VEGF-C,therefore the Hedgehog signaling pathway may be associated with the MAPK signal pathway.Suppressing nascent microvascular and micro-lymphatic may become new target to blockingup papillary thyroid carcinoma cervical lymph node metastasis.
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Objective To study the epidemic characters and tendency of HIV/AIDS (Human immunodeficiency virus/ Acquired immunodeficiency syndrome) from serologic check results.Methods 36 021 specimens of suspected clinical cases and routine cases before surgery in Xinjiang Urumqi Uiger Municipal People's Hospital were detected from 2001—2004. At first, these cases werescreened by ELISA(Enzyme-linked immunoadsordent assay) , then ascertained by desease-control center and AIDS surveillance systems through WB , HIV RNA were estimated by the application of RT-PCR , CD cell were counted with flow cytometry.Result Prevalence figures have risen sharply from 1999—2001 and increased steadily since 2002 , the positive rates of anti-HIV were 0.714%(259 cases) . 38 percents cases were female (97/259), female ratio had the increasing trend and 3 cases were found as intrauterine infection . 80% cases were adolescent(16 year old to 35 year old) , 85.6% cases were Uiger minority , 94% and 67.7% cases were drug abuse through vein and non-occupation respectively.83.3% and 8.69% cases were found in north and south of Xinjiang respectively.The positive rates of virus nucleic acid were 50% , in which 76%(19/25) were 104~105 cop/ml. CD4,CD8,CD4/CD8 were all abnormal,CD4/CD8 ratio decreased to 96%,The number of CD4 cells was remarkably reduced 56%; while CD8 cells was significantly rised 60%;Inpatients increased gradually. Among them , 80% cases were dead due to infection , 16.7% surgical cases were fracture spontaneously.Conclusion The serologic detection of anti- HIV , HIV RNA , CD cell counts had confirmed AIDS episode later ; The progress was more rapidly;infectious rate of female was increased and followed intrauterine infection in Xinjiang.The numbers of episode and death were in growth stage , antivirus therapy were imperative.