On annealing, polymer chains both near the interface and in the bulk of the film adopt more planar conformations than in their pristine states but to a different degree. The influence of F8BT molecular weight on polymer chain conformation near the substrate interface is also examined. These results are confirmed by additional absorption and photoluminescence measurements.”
“Purpose: A previous study comparing the bystander effect and low-dose hypersensitivity found that they were inversely correlated. In the current study seven cell lines with selleck chemical established bystander effect and hyper-radiosensitivity/increased
radioresistance (HRS/IRR) were further screened for the presence of an adaptive P5091 ic50 response. Materials and methods: Cell survival after exposure to direct radiation with or without a 0.1Gy priming dose, was determined using the colony forming assay for seven human cell lines (HaCAT, HPV-G, SW48, T98G, U373, HGL21 and HT29). Furthermore, the impact of the bystander effect on cell survival after exposure to irradiated cell culture medium was measured concurrently. Results: An adaptive response was induced in four cell lines (U373, T98G, HGL21 and HT29) causing increased cell survival. In agreement with previous
publications, a bystander effect was induced in three cell lines (HPV-G, HaCAT and SW48); while no bystander effect was seen in U373, T98G, HGL21 and HT29. An adaptive response was detected in cell lines known to produce hypersensitive response, and was inversely correlated with the bystander
effect. SYN-117 in vitro Conclusions: These results suggest that for the cell lines tested the ability to induce an adaptive response may be mutually exclusive to the bystander effect.”
“Introduction: Parastomal hernias affect 4.5-9% of patients submitted to ileostomy. Correcting this hernia represents a challenge. There are two basic approaches to the surgical correction of parastomal hernias: stoma relocation and repair in situ. We describe an alternative modified technique for extraperitoneal correction of large parastomal hernias using a polypropylene mesh and reimplantation of the urostomy in situ through the mesh. Patient and Methods: An 80-year-old patient submitted to Bricker urinary diversion developed a large parastomal hernia affecting almost the entire circumference causing local pain and difficulties in appliance attachment. An ellipsoid skin incision around the urostomy was done and skin flaps were dissected up to the aponeurotic borders keeping the hernia sac intact. A polypropylene mesh was sutured onto the aponeurotic borders, the urostomy was led back through a central opening in the mesh, and the skin segment was stitched onto the mesh. Results: The patient was discharged on the third postoperative (PO) day. On day 14 PO he presented a small area of dehiscence treated with resuture.