Objective To obtain colon cancer spheroid cells from human colon cancer cell lines cultured in serum-free medium (SFM),and investigate the proliferative and migratory properties of colon cancer spheroid cells.Methods Human colon cancer cell lines HCT116 and HT29 were cultured in SFM,and then the generation of spheroid cells was observed.The expression of stem cell surface marker CD133 was detected by flow cytometry,and the proliferative and migratory properties of colon cancer spheroid cells were detected by cell counting kit-8 and Transwell migration assay,respectively.All data were analyzed by using the t test.Results Spheroid cells were obtained from colon cancer cell lines HCT116 and HT29 in SFM.The ratios of spheroid cells with positive expression of CD133 generated by HCT116 and HT29 were 75.44％ ± 11.41％ and 76.22％ ± 14.23％,respectively.Compared with original colon cancer cells cultured in serum supplemented medium,the number of HCT116 and HT29 spheroid cells with positive expression of CD133 was significantly greater (t =11.43,9.17,P ＜ 0.05 ),and the proliferative and migratory abilities were much stronger also.Conclusion Colon cancer spheroid cells cultured in SFM have higher positive expression of CD133 and stronger proliferative and migratory abilities,and it can be utilized as a feasible model for further studies of colonic stem cells.

Objective To construct a Nomogram model that can accurately predict early death of metastatic colon cancer (mCC). Methods A total of 6 669 patients from the SEER database were identified using inclusion and exclusion criteria. Multivariate logistic regression was used to identify risk factors for early mortality and to construct a Nomogram. The predictive performance of the Nomogram was evaluated by C-index, calibration curve, and decision curve analysis (DCA). Results Primary tumor location, differentiation grade, T stage, M stage, bone metastases, brain metastases, CEA, tumor size, age and marital status were independent factors for early death in patients with mCC. A Nomogram was constructed based on these variables. The C-index and the calibration curve of the Nomogram showed the good predictive ability of the nomogram. DCA showed that the Nomogram had a superior clinical net benefit in predicting early death compared with TNM stage. Conclusion The developed Nomogram has good predictive ability and can help guide clinicians to identify patients with high-risk mCC for individualized diagnosis and treatment.

A 22-year-old patient was admitted to the hospital with a solitary,gradually growing and painless mass in the left shoulder for 2 years.Physical examination revealed no abnormality except for the skin lesion.Skin examination showed an elevated lesion measuring about 3.5 cm× 2.0 cm × 1.5 cm with smooth surface and normal color,which was located in the subcutaeous tissue,indurated and movable.Resection of the tumor was performed under local anesthesia.On visual observation during operation,the tumor was sited in the subcutaneous fat tissue,nodular-like and surrounded locally by fibrous pseudocapsules with a grey incisal surface and mild texture.Microscopicalty,the tumor was extremely similar to breast fibroadenoma with multiple lobuli,and each of the lobuli was composed of tubiform structures,basal cell-like epithelial cell trabs and fibromyxoid stroma abundant in fibroblast-like spindle cells.No hair bulb or primitive dermal papillae were observed in the lobuli,which were separated by compact collagen fibers infiltrated by a few scattered inflammatory cells.Fibromyxoid strotma was surrounded by basal cell-like epithelial cell strabs in most lobuli,and some tubiform structures were filled with a little thin lightly eosinophilic material in a concentric arrangement.Immunohistochemistry showed that intralobular epithelial cells were strongly positive for cytokeratin 5/6,but negative for CAM5.2 or carcinoembryonic antigen (CEA).In addition,the lightly eosinophilic material in lumens was negative for periodic acid-Schiff (PAS) staining.These results suggested that the tubiform structures were immature follicles,but not sweat ducts.The patient was diagnosed with nodular fibrofolliculoma (NFF) based on the clinical manifestations,morphological features,immunohistochemical and PAS staining results.No relapse was observed in more than 3 months of postoperative follow-up.As a benign trichogenic adnexal neoplasm with unique clinicopathological manifestations,NFF may be a new entity of cutaneous adnexal neoplasm.

Objective:To evaluate the effects of different temperature management strategies on blood-brain barrier (BBB) and postoperative cognitive dysfunction (POCD) in the patients undergoing spinal fixation surgery.Methods:Ninety-six patients, aged 44-78 yr, weighing 45-104 kg, of American Society of Anesthesiology physical status Ⅰ-Ⅲ, undergoing spinal fixation surgery with combined intravenous-inhalational anesthesia, were divided into 3 groups ( n=32 each) by the simple randomization: warming blood transfusion and infusion group (group WBI), active warming group (group AW) and active warming plus selective brain cooling group (group SBC). In WBI group, the fluid for intraoperative intravenous infusion was warmed to 37 ℃ using a medical blood transfusion-infusion warmer.In AW group, warming was maintained using the fluid warming combined with the body surface warming blanket until the end of operation, and the target temperature of the warming blanket was set at 38 ℃.In SBC group, the warming protocol were similar to those previously described in AW group, and selective brain cooling was performed through an electronic ice cap with a set temperature of 4 ℃.Blood samples were collected from the median cubital vein at the end of operation, brain microvascular endothelial cells were isolated and identified by immunomagnetic bead, and the target cells were counted with a fluorescence microscope.The concentration of C-reactive protein in peripheral blood was measured by rate nephelometry on the first day after operation.The extubation time, length of post-anesthesia care unit (PACU) stay, total length of hospital stay, thermal comfortableness score, shivering in PACU, agitation and postoperative fever were recorded.The postoperative recovery was assessed using the 40-item Quality-of-Recovery scale on 7th day after surgery. Results:Compared with WBI group, the incidence of POCD and shivering in PACU, extubation time, length of PACU stay, and serum C-reactive protein concentrations were significantly decreased, and thermal comfortableness score and 40-item Quality-of Recovery scale score were increased in AW group and SBC group ( P<0.05). Compared with AW group, the count of brain microvascular endothelial cells was significantly decreased in SBC group ( P<0.05). Conclusions:Active warming produces no damage to the structure of BBB, and can reduce the development of POCD; active warming combined with selective brain cooling can improve the structural integrity of BBB, but it cannot reduce the development of POCD in the patients undergoing spinal fixation surgery.

Objective To compare the clinical efficacy of ibuprofen arginate,a new nonsteroidal antiinflammatory drug,with that of ibuprofen,in patients with rheumatoid arthritis or knee osteoarthritis and to evaluate the safety and tolerability of ibuprofen argihate.Methods This is a muhicenter,random,open,active comparator-controlled,parallel clinical trail in which 171 patients with rheumatoid arthritis or knee osteoarthritis were enrolled.Patients were randomized to 2 groups:400 mg of ibuprofen arginate three times daily and 400 mg of ibuprofen three times daily respectively.Clinical efficacy and safety were evaluated after 4-week treatment.Results Ibuprofen arginate,at dosages of 400 mg three times daily,had shown significant efficacy in relieving pain,tenderness and swelling of joints and there was no significant difference when compared to that of ibuprofen.There was no difference in clinical adverse effects between the two groups and no serious adverse effects were repofled.But ibuprofen arginate could initiate effectiveness more rapidly than ibuprofen in both rheumatoid arthritisand osteoarthritis patients.Conclusion Ibuprofen arginate has the same clinical efficacy and safety profiles as itmprofen in treating rheumatoid arthritis and osteoarthritis.However,its onset is more rapid than ibuprofen.

In the original publication the grant number is incorrectly published. The correct grant number should be read as "17140901600". The corrected contents are provided in this correction article. This work was partially supported by grants from the National Natural Science Foundation of China (Nos. 81670470 and 81600149), a grant from the Shanghai Municipal Commission for Science and Technology (17140901600, 18411953500 and 15JC1400201) and a grant from National Key Research and Development Program (2016YFC0905100).

Adenosine ; genetics ; Adenosine Deaminase ; genetics ; metabolism ; Animals ; CRISPR-Associated Protein 9 ; genetics ; metabolism ; CRISPR-Cas Systems ; genetics ; Embryo, Mammalian ; metabolism ; Gene Editing ; Genetic Variation ; genetics ; Mice ; Mice, Inbred C57BL ; Rats ; Rats, Sprague-Dawley