Objective To explore the correlation between quantitative parameters of blood perfusion with contrast-enhanced ultrasound (CEUS) and microvessel density (MVD),microvessel area (MVA) in papillary thyroid carcinoma (PTC).And to investigate the value of CEUS in evaluating the angiogenesis in PTC before operation.Methods Totally 69 cases of patients with papillary thyroid carcinoma were selected from April 2014 to October 2016 in the Affiliated Hospital of Qingdao University.The CEUS characteristics of 69 patients with papillary thyroid carcinoma confirmed by pathology were retrospectively analyzed.The patients were divided into three groups according to maximum diameter of lesions (＜ 1 cm group,1-2 cm group and ＞ 2.0 cm group),and two groups according to pathologic reports (neck lymph node metastatic and nonmetastatic groups).The blood perfusion parameters between or among different groups were evaluated by ttest or one-way ANOVA.Immunohistochemical staining were performed to evaluate the MVD,MVA in the surgical specimens,and the correlation of quantitative parameters with MVD,MVA were assessed by Spearman.Results (1) Peak Intensity (Peak),area under the curve (AUC),MVD and MVA of thyroid carcinoma were lower than the surrounding normal thyroid tissue (14.95 ± 4.96 vs 22.67±6.11,970.01±263.20 vs 1798.35±563.67,118.91±31.32 vs 206.27±39.58,8.58±-2.68 vs 18.47±3.13),and the differences were statistically significant (t=-8.700,-11.061,-14.377 and-20.532,all P ＜ 0.05).(2)With the increase of the lesion's maximum diameter,Peak,AUC,MVD and MVA increased,and the differences were statistically significant (t=0.000,0.000,0.000,0.000;t=0.027,0.044,0.033,0.000;t=0.027,0.044,0.033,0.000,all P ＜ 0.05).(3) Papillary thyroid carcinoma with lymphatic involvement had significantly higher values of Peak,AUC,MVD and MVA than those without lymphatic involvement (16.86±4.36 vs 13.80±3.55,1128.16±290.85 vs 874.39±192.27,114.12±30.69 vs 103.67±22.19,10.30 ± 2.44 vs 7.54 ± 2.29),and the differences were statistically significant (t=3.177,4.366,6.336 and 4.742,all P ＜ 0.05).(4) A positive correlation existed between the Peak,AUC and MVD,and the differences were statistically significant (r=0.506,0.478,all P ＜0.05).Peak,AUC and MVA showed positive correlation,and the differences were statistically significant (r=0.648,0.653,all P ＜ 0.05).TP,MTT and MVD,MVA showed no correlations (all P ＞ 0.05).Conclusions The values of Peak and AUC calculated from CEUS were correlated to MVD and MVA.CEUS may be used to evaluated the angiogenesis of PTC before operation.And CEUS is helpful for prediction of prognosis of PTC.

ObjectiveTo investigate the relationship between complement-3(C3) and progression of early cerebral infarction.Methods168 consecutive patients with acute cerebral infarction within the first 24 hours from onset were recruited.Fasting venous blood sample was drawn on the morning of the second or the third day after admission.C3 and other clinical chemistry variables were measured.The relationship of C3 and progressing stroke(PS) was analyzed by Logistic regression.Results68 cases(40.48%) were considered as PS.Level of serum C3 in PS patients was 1.28±0.20 g/L higher than in those with non-PS(1.16±0.25 g/L,P=(0.000)).A higher C3 accompanied a higher tendency of prevalence of PS(P=0.001).Logistic regression analysis showed that C3 was significantly correlated with PS(OR for each 1.0 g/L=7.27;95% CI=1.52～36.39; P=0.013).ConclusionElevated serum C3 may play an important role in the prevalence of PS.

Carotid Artery, Internal, Dissection ; therapy ; Humans ; Male ; Middle Aged ; Treatment Outcome

Humans ; Male ; Middle Aged ; Polypropylenes ; Reconstructive Surgical Procedures ; Respiratory Tract Fistula ; surgery ; Surgical Mesh

Objective To simulate the chemical microenvironment after traumatic brain injury (TBI) and to investigate the effect of this microenvironment on the survival and differentiation of neural stem cells (NSCs).Methods The brain tissue homogenate of TBI rat model was harvested to simulate the chemical microenvironment after TBI.The primary NSCs of rat model were isolated and extraction,and then identified the phenotype characteristics with immunofluorescence staining.The experiments were divided into control group,normal brain tissue extract group (BTE group) and traumatic brain injury tissue extract group (TBITE group).The cell growth and morphological changes of each group were observed dynamically.The expression of apoptosis related protein,which includes Bax,Bcl-2,caspase-3 and cleaved caspase-3,were detected by Western Blot 24 h after experiments.The proliferation of NSCs was detected by MTT assay and Western Blot after 3 days.The differentiation level of NSCs to neurons was detected by immunofluorescence staining after 7 days.Results The results of Western Blot showed that compared with the control group,there was no significant change of apoptosis in the BTE group,while the apoptosis in the BTE group was significantly increased,showed a increase of expression levels of Bax (F=18.06,P＜0.01) and Cleaved caspase-3 (F=23.86,P＜0.01),and a decrease of that of Bcl-2 (F=22.95,P＜0.01).The results of MTT assay showed that compared with the BTE group,the proliferation of NSCs in the TBITE group was decreased (F=41.99,P＜0.01).The immunofluorescence staining showed that compared with the control group,the neuronal differentiation rate was increased in the BTE group.Further,compared with the BTE group,the neuronal differentiation rate in the TBITE group was decreased (F=66.93,P＜0.01).Conclusion The injury microenvironment after TBI can significantly inhibit the survival and differentiation of NSCs,which provides a theoretical basis for clarifying the mechanism of endogenous nerve regeneration after TBI.