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Objective:To explore whether thyroxine (T 4) could promote differentiated thyroid cancer (DTC) progression by binding to integrin α vβ 3in vitro and its downstream mechanism. Methods:Papillary thyroid cancer cell lines TPC-1, K1 and follicular thyroid cancer (FTC) cell line FTC133 were cultured in vitro, and the expressions of integrin α vβ 3 in those 3 DTC cell lines were determined with immunofluorescence and flow cytometry analysis. After the treatment of T 4, tetraiodo thyroacetic acid (Tetrac) and Arg-Gly-Asp (RGD) peptide alone or in combination, the proliferation and metastatic potential of DTC cell lines were detected by cell counting kit-8 (CCK-8), Transwell migration and invasion assays. The small interfering RNA (siRNA) transfection was used to verify whether integrin α v or β 3 subunit knockdown could reverse the effect of T 4 on DTC cells. The expression levels of downstream signaling proteins phosphorylated extracellular signal-regulated kinase (p-ERK)1/2 and total extracellular signal-regulated kinase (ERK)1/2 were detected by Western blot. The effects of mitogen-activated protein kinase kinase (MEK)1/2 inhibitor (GSK1120212) on the proliferation, migration and invasion of T 4-treated cells were detected. One-way analysis of variance and Tukey test were used for data analysis. Results:The integrin α vβ 3 expressions in TPC-1, K1 and FTC133 cells were all positive, with the relative mean fluorescence intensity (MFI) of 61.93±18.61, 16.89±2.43 and 32.36±0.83, and the percentages of positive cells of (94.38±1.30)%, (74.11±3.87)% and (50.67±1.78)%, respectively ( F values: 13.36 and 217.30, P=0.006 and P<0.001). Compared with control group, the proliferation, migration and invasion in the three DTC cell lines treated with T 4 were significantly enhanced (96 h, F values: 62.67-297.50, q values: 13.15-20.73, all P<0.001). T 4-induced cell proliferation, migration and invasion were markedly reversed by Tetrac or RGD (96 h, q values: 8.61-17.54, all P<0.001). T 4-induced cell proliferation, migration and invasion were also significantly inhibited by the knockdown of integrin α v or β 3 subunit (72 h, F values: 7.75-70.98, q values: 4.77-15.21, all P<0.05). Western blot results showed that the phosphorylation levels of ERK1/2 in DTC cells were significantly increased by T 4 treatment, and the T 4-induced activation of ERK1/2 signaling pathway could be blocked by Tetrac, RGD, integrin α v or β 3 subunit knockdown. T 4-induced cell proliferation, migration and invasion were significantly reversed by GSK1120212 (96 h, F values: 47.53-151.40, q values: 10.32-16.65, all P<0.001). Conclusion:T 4 can promote cell proliferation and metastasis of DTC cells by binding to integrin α vβ 3 and activating the ERK1/2 pathway.
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Objective To evaluate the significance of kidney depth obtained by computed tomography (CT) in measuring glomerular filtration rate (GFR) by Gates method in living kidney transplant donors.Methods Individual kidney depth was compared among the estimates of Tφnnesen,Taylor and Li Qian formulas and CT measurements in 167 living-related kidney transplant donors respectively.While maintaining the active region of interest of kidney and background unchanged in 137 99mTe-DTPA renal dynamic imaging cases,GFR was measured by Gates' method and individual kidney compared among the estimates of Tφnnesen,Taylor and Li Qian formulas and CT measurements.Results Left/right kidney depth obtained by CT,Tφnnesen,Taylor and Li Qian formula was 6.82 ± 0.96/7.02 ± 1.00,5.67 ± 0.58/5.71 ± 0.59,6.43 ± 0.77/6.81 ± 0.72 and 7.03 ± 0.76/7.06 ± 0.70 cm;GFR 45.44 ± 9.04/46.61 ± 9.06,37.54 ± 6.34/37.37 ± 6.02,43.39 ± 7.59/44.62 ± 6.94 and 46.99 ± 8.04/46.70 ± 7.30 ml/min respectively.Individual kidney depth and GFR calculated by Taylor and Li Qian were higher than those of Tφnnesen formula (P＜0.01).Individual kidney depth and GFR calculated by CT were higher than those of Tφnnesen and Taylor formulas (P＜0.01).Left kidney depth and GFR calculated by Li Qian formula were higher than those of CT measurements (P＜0.01).And no significant difference existed in right kidney(P＞0.05).Conclusions Kidney depth measured by CT improves the accuracy of kidney depth estimated by Gates method and optimizes GFR in living donors for renal transplant.
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Objective To analyze the clinical features of patients with dengue fever (DF) accompanied by platelet count (PLT) reduction and their characteristics of traditional Chinese medicine (TCM) syndrome differentiation and treatment. Methods The clinical data of 1 570 patients with confirmed diagnosis of DF collected from the Information Management System (HIS) of the Second Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine (TCM) from January 2013 to December 2017 were retrospective analyzed. According to the patients accompanied by platelet (PLT) reduction or not, they were divided into DF accompanied by PLT reduction group (1 211 cases) and non-PLT reduction group (359 cases); according to whether the cooling blood and dissipating blood stasis TCM (composed of red peony, peony bark, rehmannia root, salvia miltiorrhiza, rhinoceros horn, etc.) was used or not in TCM syndrome differentiation prescription, they were divided into cooling blood and dissipating blood stasis group (492 cases) and non-cooling blood and dissipating blood stasis group (719 cases). The differences in clinical characteristics, laboratory indicators, TCM syndrome differentiation and prescription characteristics in DF accompanied by PLT reduction group and non-PLT reduction group were compared and analyzed; the differences in changes of white cell counts (WBC) and PLT levels before and after treatment between cooling blood and dissipating blood stasis group and non-cooling blood and dissipate blood stasis group were compared and analyzed. Results The proportions of rash, hemorrhage, WBC reduction and aspartate transaminase (AST) elevation in DF accompanied by PLT reduction group were significantly higher than those in non-PLT reduction group [rash: 61.4% (744/1 211) vs. 14.8% (53/359), hemorrhage: 7.3% (89/1 211) vs. 1.1% (4/359), WBC reduction: 88.2% (1 068/1 211) vs. 60.4% (217/359), AST increased: 41.0% (497/1 211) vs. 29.5% (106/359)]; the PLT and WBC in the DF accompanied by PLT reduction group were significantly lower than those in the non-PLT reduction group [PLT (×109/L): 74.2±27.5 vs. 166.6±42.8, WBC (×109/L): 2.1±1.6 vs. 6.4±3.7, both P < 0.05], and AST in the DF accompanied by PLT reduction group were significantly higher than those in the non-PLT reduction group (U/L: 69.6±34.1 vs. 52.6±26.1, P < 0.05). The common syndrome of TCM syndrome differentiation in DF accompanied by PLT reduction group and non-PLT reduction group was mainly Wei-Qi syndrome [425 cases (35.1%) and 147 cases (40.9%) respectively]; Yinqiao powder was the main TCM prescription in the two groups [132 cases (10.9%) and 46 cases (12.8%) respectively]. In the comparisons between the cooling blood and dissipate blood stasis group and non-cooling blood and dissipate blood stasis group, there were no statistically significant differences in the proportion of combining use of drugs for increasing WBC and PLT and the levels of WBC and PLT after treatment (all P > 0.05). After treatment, the WBC, PLT levels and the proportions of above indexes returned to normal in the cooling blood and dissipate blood stasis group were significantly higher than those in the non- cooling blood and dissipate blood stasis group [WBC(×109/L): 4.5±3.1 vs. 3.2±2.4, proportion of WBC returned to normal: 42.7% (210/492) vs. 33.1% (238/719); PLT (×109/L): 85.9±26.2 vs. 79.3±24.8, proportion of PLT returned to normal: 41.1% (202/492) vs. 27.5% (198/719), all P < 0.05]. Conclusions The symptoms of skin rash and bleeding are more common in patients with DF accompanied by PLT reduction. The syndrome differentiation of TCM for this disease is mostly based on the combined disorders of Wei (defence) and Qi, both Qi and blood burning and blood stasis associated with toxin. Cooling blood and dissipating blood stasis may help the recovery of WBC and PLT in these patients, which is of great significance in reducing severity of dengue fever (such as bleeding).
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Objective@#To investigate the therapeutic strategy in patients with early gastric cancer after noncurative endoscopic submucosal dissection (ESD).@*Methods@#A total of 107 cases with early gastric cancer receiving noncurative endoscopic submucosal dissection were collected and the patients were classified into an additional gastrectomy group (n=41) and a simple follow-up group (n=66) according to the therapeutic method used after noncurative ESD. The clinicopathological information, short- and long-term clinical outcomes between the two groups were analyzed and compared.@*Results@#The mean age of the patients in the gastrectomy group and follow-up group was(59.2±8.7)years old and(64.7±8.8)years old, respectively. The depth of submucosal invasion was (1445.83±803.12) and (794.71±815.79) μm, respectively. The difference between the two groups was statistically significant (P=0.020 for age and P=0.010 for depth of submucosal invasion). Compared with follow-up group, the patients with undifferentiated histologic type, deep invasion of submucosa (SM2), diffuse type, lymphovascular invasion and neural invasion were more common in the gastrectomy group (P<0.05). The R0 resection rate of ESD in the gastrectomy group was significantly lower than the follow-up group(26.8% vs 65.2%, P<0.001). The positive residual tumor rate and LNM rate of additional gastrectomy group were 31.7%(13/41)and 9.76%(4/41)according to the pathological results after gastrectomy. The gastrectomy group had 2 cases of local recurrence (2/41, 4.9%), while 5(5/66, 7.6%)in the follow-up group(4.9% vs 7.6%, P=0.883). There was no significant difference in overall survival (OS) and disease-free survival (DFS) between the two study groups (P=0.066 and 0.938, respectively).@*Conclusions@#Assessment of LNM risk should be performed in patients with noncurative endoscopic resection. For patients with low risk of LNM who are intolerance of additional gastrectomy due to old age and comorbidities, close follow-up with endoscopy can be considered as an alternative.
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Objective To explore the impact of metacognitive technology psychological intervention technology on perioperative school-age children′s psychological condition, designed to find an efficient, fast method to intervene preoperative psychological condition, to eliminate their fear of emotional,coping with stress reaction in the effective time. Methods A total of 70 cases of school-age children who were treated from December 2016 to March 2017 were selected randomly and divided into the experimental group (35 cases) and the control group (35 cases). Both groups performed routine preoperative,intraoperative and postoperative nursing,and the experimental group was performed by the special person on the basis of conventional care when waiting for the operation. The changes of the fear index were compared between two groups of patients(T1),preoperative waiting(T2),pre-anesthesia(T3) and one day after surgery(T4). Results The scores of T1,T2,T3 and T4 in the experimental group were 7.000,7.929,2.686,0.971.The scores of T1,T2,T3 and T4 in the control group were 6.929,7.543,8.286 and 3.400.There was no significant difference in the fear index between the two groups at time T1 and T2 (t=0.796, 1.627, P>0.05). The fear index of T3 and T4 was significantly lower than that in the control group. The difference was statistically significant (t=298.637, 400.463, P<0.05). Conclusions The metacognitive technique can significantly improve the psychological status of the children in perioperative school age,and improve the adaptability and tolerance of the children.
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OBJECTIVE@#To investigate the histopathologic changes of ethmoid bone and its correlation with clinical types of chronic rhinosinusitis (CRS).@*METHOD@#All ethmoid bones and mucosa from 180 patients with CRS after endoscopic sinus surgery were collected for histopathologic detection with HE staining. The number and the rate of cases were counted according to different histopathologic types. To analyze the correlation between ethmoid bones and clinical types of CRS, mucosal pathologic change, the CT-scanning types of sinusitis, the course of disease as well as operational history.@*RESULT@#The ethmoid bone of all patients had varying degrees of histopathologic changes. There were 5 cases (2.78%) in stage I, 38 cases (21.11%) in stage II, 71 cases (39.44%) in stage III, and 66 cases (36.67%) in stage NIV. The histopathologic changes of ethmoid bone varied in different clinical types. In type I, there were 5 cases (8.33%) in stage I, 33 cases (55.00%) in stage II, 15 cases (25.00%) in stage III, and 7 cases (11.67%) in stage NV. In type I, there were 5 cases (8.33%) in stage II, 37 cases (61.67%) in stage mI, and 18 cases (30.00%) in stage NV. In type III, there were 19 cases (31.67%) in stage III, and 41 cases (68.33%) in stage NV. All histopathologic changes of ethmoid bone were statistically correlated (P < 0.01) with clinical types of CRS, pathologic mucosal change, the CT-scanning types of sinusitis, the course of disease as well as operational history.@*CONCLUSION@#Almost all patients with CRS manifest different-degrees of histopathologic changes, which are correlated with the clinical types of CRS, pathologic mucosal change, the CT-scanning types, the course of disease as well as operational history.