The Preparation of Novel P(OEGMA-co-MEOMA) Microgels-Based Thermosensitive Hydrogel and Its Application in Three-Dimensional Cell Scaffold.

Thermosensitive hydrogel scaffolds have attracted particular attention in three-dimensional (3D) cell culture. It is very necessary to develop a type of thermosensitive hydrogel material with low shrinkage, and excellent biocompatibility and biodegradability. Here, five types of thermosensitive microgels with different volume phase transition temperature (VPTT) or particle sizes were first synthesized using 2-methyl-2-propenoic acid-2-(2-methoxyethoxy) ethyl ester (MEOMA) and oligoethylene glycol methyl ether methacrylate (OEGMA) as thermosensitive monomers by free radical polymerization.

[Effect of bisphenol A on semen quality of exposed workers: a pilot study].

Objective: To explore the semen quality of the workers exposed to the xenoestrogen bisphenol A (BPA) was explored.

Methods: A cross-sectional study of 20 BPA exposed and 16 control workers with similar age, physical activities was performed. Tests included quantifying BPA in blood samples and investigating the quantity and quality of semen.