“Cationic polymerizations of various vinyl ethers with cyclic substituents were performed with BF(3)OEt(2). The polymers had relatively high molecular weight (M(n): 18,900-132,000), although
the polymerization of phenyl vinyl ether did not proceed. According to differential scanning calorimetry, the obtained poly(vinyl ether)s showed higher glass transition temperatures than room temperature. These poly(vinyl ether)s gave free-standing membranes both by a solution-casting method and by a hot-press see more method. In the membranes prepared by solution-casting, the oxygen permeability coefficients of these membranes were in the range of 0.81-6.01 barrers, and poly(2-adamanthyl vinyl ether) showed the highest gas permeability among them.
Gas permeability of the membranes prepared by hot-press was lower than that of the membranes prepared by solution-casting. (C) 2009 Wiley check details Periodicals, Inc. J Appl Polym Sci 114: 2339-2343, 2009″
“Genetic studies have clearly shown that primary headaches (migraine, tension-type headache and cluster headache) are multifactorial disorders characterized by a complex interaction between different genes and environmental factors. Genetic association studies have highlighted a potential role in the etiopathogenesis of these disorders for several genes related to vascular, neuronal and neuroendocrine functions. A potential role as a therapeutic target is now emerging for some of these genes. The main purpose of this review is to describe new advances in our knowledge regarding the role of MTHFR, KCNK18, TRPV1, TRPV3 and HCRTR genes in primary headache disorders. Involvement of these genes in primary headaches, as well as their potential role in the therapy of these
disorders, will be discussed.”
“Study Design. Cerebrospinal fluid Proteases inhibitor (CSF) from dogs with intervertebral disc herniation (IVDH) were analyzed using a specific antibody against cartilage oligomeric matrix protein (COMP). Immunolocalization and genetic expression of COMP were also examined in the spinal cords of mouse, rat, and dog.
Objective. To investigate the hypothesis that COMP is present in CSF of dogs with IVDH, and the clinical relevance of COMP expression in CSF as a potential biomarker of spinal cord injury.
Summary of Background Data. In dog IVDH, diagnostic imaging is useful for determining the spinal cord compression, but less useful for assessment of traumatic degeneration. Aggrecan, a well-known component of cartilage matrix, is increased in CSF from cases of neural damage and inflammation of the spinal cord.
Methods. CSF from the cisterna magna (C-CSF) and the lumbar spine (L-CSF) of 19 dogs with IVDH and 5 normal dogs were analyzed using inhibition enzyme-linked immunosorbent assay ( ELISA) and immunoblotting with an antibody cross-reactive with dog COMP. Samples of normal spinal cord from mouse, rat, and dog were also prepared for immunohistochemistry and in situ hybridization.