Descending colon adenocarcinoma with spermatic cord metastasis: report of two cases and review of the literature

Metastatic carcinoma of the spermatic cord from colon cancer is extremely uncommon. The prognosis of metastatic spermatic cord cancer is poor. Resection of the metastasis and systematic chemotherapy may improve the prognosis. We report two cases and review of the literature. A 81-year-old man presented with painless left scrotum mass 60 months after left hemicolectomy for a descending colon cancer. Biopsy of the mass confirmed a metastatic adenocarcinoma. He refused any further treatment. Following 16 months, he was in a poor quality of life with the mass enlarged and ulceration. Another 66-year-old man presented with painless left scrotum mass 25 months after left hemicolectomy for a descending colon cancer. Radical orchidoepididymectomy followed by 7 cycles of FOLFOX4 chemotherapy was performed. Histological examination showed both mucinous adenocarcinoma in primary and secondary tumor. He was free from disease 20 months after diagnosis

Activity of the TNF-related apoptosis-inducing ligand gene expressed from the hTERT promoter on colon cancer cell line HT-29 / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To evaluate the expression and activity of TNF-related apoptosis-inducing ligand (TRAIL) gene expressed from the hTERT promoter on colon cancer cell line HT-29.</p><p><b>METHODS</b>GFP/TRAIL gene expressed from the hTERT promoter was transfected into HT-29 with adenoviral vectors system, expression and apoptosis inducing ability of GFP/TRAIL protein were determined with fluorescence-activated cell sorting (FACS) method.</p><p><b>RESULTS</b>The expression of GFP gene was 31.4 % and 67.0 % with either hTERT promoter or CMV promoter in DLD1 cells; GFP/TRAIL gene was able to inhibit cell growth (74.2%) and induce apoptosis (25.8%) of HT-29 cells. There was significant difference between Ad/hTERT-gTRAIL and the other two control groups (PBS and Ad/CMV-GFP, P<0.05).</p><p><b>CONCLUSION</b>The GFP/TRAIL gene with hTERT promoter transfected by adenoviral vector was successfully expressed in HT-29 cell, which can both inhibit cell growth and induce apoptosis of colon cancer cell line HT-29.</p>

Effects of sodium hyaluronate on growth and adhesion of two human colorectal cancer cell lines in vitro / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To investigate the effects of sodium hyaluronate on the growth and adhesion of colorectal cancer cells.</p><p><b>METHODS</b>Human colorectal cancer cell lines SW620 and Colo205 were treated with sodium hyaluronate (25 -2,500 microg/ml), and cancer cell proliferation was measured by MTT assay in vitro. Flow-cytometric analysis was applied to detect expression of CD44 on SW620 and Colo205 cells.</p><p><b>RESULT</b>In vitro sodium hyaluronate enhanced proliferation of Colo205 cells, but it had no appreciable effect on SW620 growth under the same doses, Meantime, CD44 expression on cancer cells decreased compared with controls.</p><p><b>CONCLUSION</b>In vitro sodium hyaluronate has different effects on growth of different colorectal cancer cell lines, but can inhibit CD44 expression of colorectal cancer cells and influence their ability of adhesion.</p>