Objective To evaluate the potential roles of celecoxib on proliferation and cell cycle progression of colon adenocarcinoma cells and on the hepatic metastasis of nude mice. Methods The human colon cancer cells HT-29 and HCT-116 were employed in the study. After treatment with celecoxib, the inhibitory effects of celecoxib on the proliferation of cancer cells were quantified by MTT assay, and the cell cycle progression was detected by flow cytometry, tumor cells were inoculated in nude mice, and the hepatic metastasis was detected. Results ①Celecoxib inhibited the proliferation of the tumor cells in time and dose-dependent manners （P＜0.05，P＜0.01）. The inhibitory effect on HT-29 cells was ber than that on HCT-116 cells （P＜0.05）. ②Celecoxib changed cell cycle progression of both kinds of cells, and decreased the proliferation index of both kinds of cells too. ③Celecoxib could inhibit the growth of the hepatic metastatic tumor obviously. Conclusion Celecoxib may inhibit the activity of cyclooxygenase-2, and resulting in the inhibition of division and proliferation, apoptosis of tumor cells and interfering in metastasis and relapse of colon cancer.
【Abstract】Objective To investigate the effects of selective cyclooxygenase-2 (COX-2) inhibitor nimesulide on the proliferation of colon adenocarcinoma cells in vitro and the expression of matrix metalloproteinase-2 (MMP-2). Methods The human colon cancer cell lines HT-29 and HCT-116 were employed in the study, grouped as nimesulide group, DMSO control group and blank control group. After treatment with nimesulide, the inhibitory effect of nimesulide on the proliferation of cancer cells was quantified by MTT assay, and the expression of MMP-2 in the cells was detected by quantitative zymography. Results Nimesulide inhibited the proliferation of HT-29 and HCT-116 cells in time and dosedependent manners. The inhibitory effect on HT-29 cells was ber than that on HCT-116 cells. Nimesulide downregulated the MMP-2 expression in HT-29 cells, whereas the expression in HCT-116 cells remained unchanged. Conclusion Nimesulide can obviously inhibit the growth of colon cancer HT-29 cells with positive COX-2 protein, suggesting that nimesulide may downregulate the expression of MMP-2 by inhibiting the activity of COX-2.
ObjectiveTo explore the papillary thyroid carcinoma (PTC) occurs on the lymph nodes posterior to the right recurrent laryngeal nerve (LN-prRLN) factors that influence the transfer of clinical nomogram prediction model, and build as a reference of LN-prRLN cleaning the decision. MethodsThe clinical data of PTC patients admitted to the General Surgery Department of Baoding No.1 Central Hospital from January 2021 to December 2023 were retrospectively analyzed. Among them, 325 patients underwent LN-prRLN dissection, and they were divided into non-metastatic group (269 cases) and metastasis group (56 cases) according to the presence or absence of LN-prRLN metastasis. By comparing the differences of clinical and pathological characteristics between the two groups, the independent risk factors of LN-prRLN metastasis were analyzed and discussed, and then the nomogram prediction model of LN-prRLN metastasis was constructed with the independent risk factors, and the effectiveness of the model was verified and evaluated. ResultsIn 325 patients, 56 cases (17.23%) occurred LN-prRLN metastasis. The results of univariate analysis showed that gender, extrathyroidal extension, lymph nodes anterior to right recurrent laryngeal nerve (LN-arRLN) metastasis, location of cancer focus, and lateral lymph node metastasis (LLNM) were related to LN-prRLN metastasis of PTC (P<0.05). Multivariate binary logistic regression analysis showed that male [OR=3.878, 95%CI (1.192, 12.615)], with extrathyroidal extension [OR=2.836, 95%CI (1.036, 7.759)], with LN-arRLN metastasis [OR=10.406, 95%CI (3.225, 33.926)], right cancer focus [OR= 5.632, 95%CI (1.812, 17.504)] and with LLNM [OR=3.426, 95%CI (1.147, 10.231)] were independent risk factors of LN-prRLN metastasis. Receiver operating characteristic curves of nomogram prediction model based on the above independent risk factors showed that the area under the curve was 0.865, 95%CI was (0.795, 0.934), Jordan index was 0.729, sensitivity was 0.873, and specificity was 0.856, which had higher prediction value. The C-index of Bootstrap test was 0.84 [95%CI (0.755, 0.954) ]. Calibration curves showed that predictive value close to the ideal curve, had good consistency. The analysis of clinical decision curve showed that the model had good clinical prediction effect on LN-prRLN metastasis of PTC. ConclusionsMale, extrathyroidal extension, LN-arRLN metastasis, right cancer focus and LLNM are independent risk factors for LN-prRLN metastasis of PTC. The nomogram prediction model based on the above independent risk factors has high discrimination and calibration, which is helpful for surgeons to make clinical decisions.