(C) 2011 American Institute of Physics. [doi:10.1063/1.3638707]“
“This paper aims to study the vesicovaginal space local tissue reaction to type I and II polypropylene mesh in a rabbit model.
Different types of meshes were implanted into the rabbit vesicovaginal space. The animals were killed at days 7 and KPT-8602 60, and the initial implant and the neighboring host tissue were removed, including the bladder and vaginal
wall. Histopathology and immunohistochemistry (Ki-67 and proliferating cell nuclear antigen) were performed to evaluate the cell proliferation, and the indirect local inflammatory response was described.
One rabbit had erosion at the urinary bladder mucous membrane, which resulted in vesical stone formation in the type I mesh group at day 60. Obvious local tissue reaction was found after the different types of meshes were implanted, and the reaction tapered and disappeared over time. At day 7, the reaction in the type I mesh group was stronger than that in the type II group, while at day 60, the reaction shows no difference.
The two types of meshes could induce local
tissue reaction, but this was stronger in type I mesh group at day 7 find more and shows no obvious difference between the two groups at day 60.”
“Non-Hodgkins lymphoma (NHL) of the uterine cervix is exceedingly rare. The management of the disease is not standardized. A 44-year-old lady presented with a history of bleeding pervaginum and a foul-smelling discharge of 2 months duration. A 7 x 7 growth was seen in the cervix. A biopsy revealed it to be a CD20-positive diffuse large B-cell (DLBCL)-type NHL. She was diagnosed as stage IE after staging work-up, and managed with three courses of rituximab, cyclophosphamide, vincristine, adriamycin, and prednisolone followed by external beam radiotherapy (46 Gy in 23 fractions) by 3D conformal technique. She attained a complete response, and has been in remission JQ1 clinical trial for 1 year 3 months.”
“Recently, numerous type I macroporous polypropylene vaginal meshes have been introduced into the market with little known of their differences.
Seven vaginal meshes were obtained and loaded to failure (n = 5/type). Additional cyclic
loading determined permanent deformation with submaximal loading.
The load elongation curves demonstrated a bilinear response with lower stiffness (N/mm), followed by higher stiffness. Ascend (TM) was the stiffest mesh in both regions of the load elongation curve (0.72 and 1.66 N/mm) with the lowest transition to higher stiffness (13.4%). Polyform (TM) had the highest failure load (53.8 N) while Ultrapro (TM) had the lowest (7.83 N). Novasilk (TM) (89.4%) and Ultrapro (TM) (87.9%) had the highest relative elongations at mesh failure while Ascend (TM) had the lowest (40.2%). Ascend (TM) had the least relative elongation after three protocols of cyclic loading (3.0%, 9.8%, and 9.7%).
Current vaginal meshes demonstrate marked variation in biomechanical characteristics which may impact the in vivo behavior.