The chelating properties of the new polymer toward the divalent metal ions (Cu2+, Zn2+, Ni2+, and Pb2+)

in aqueous solutions was studied by a batch equilibration technique as a function of contact time, pH, mass of resin, and concentration of metal ions. The amount of metal-ion uptake of the polymer was determined by using atomic absorption spectrometry. Results of the study revealed that the resin exhibited higher capacities and a more pronounced adsorption toward Pb2+ and that the metal-ion uptake follows the order: Pb2+ > Cu2+ > Zn2+ > Ni2+. The adsorption and binding capacity of the resin toward the various metal ions investigated are discussed. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“Von Hippel-Lindau disease (VHL) comprises a series of complicated clinical manifestations. We hereby report one unique case of VHL with a selleck compound natural

history that mimics acute myelitis. MRI and biopsy in this patient showed multiple solid hemangioblastomas of the central nervous system and kidney. selleck This study further confirmed that VHL is of highly clinical, imaging, and pathological heterogeneity. Diagnosis for VHL should be based on combination of clinical, radiological, pathological, and genetic data.”
“Reconstructive surgery of defects for any disease or injury including bisphosphonate-induced osteonecrosis of the jaws requires an understanding of the pathophysiology of the condition. Related to bisphosphonates, it is the apoptosis (programmed cell death) of the osteoclast that inhibits, and in some cases stops, bone renewal/remodeling altogether. Therefore, reconstruction begins with a debridement of resection considering this mechanism. For intravenous bisphosphonate-induced osteonecrosis defects of

MK-8776 the mandible, most resections are immediately reconstructed with a rigid titanium plate provided that secondary infection is controlled, there is sufficient soft tissue present, and a resection margin containing variable bone marrow can be achieved. For some similar defects with significant secondary infection, a delayed rigid plate placement after the recipient site has healed and is infection free represents another option. In those defects in which there is a significant soft tissue loss, flap reconstruciton may also be necessary. The pectoralis major myocutaneous flap is the most predictable and most commonly used flap, followed by the trapezius myocutaneous flap, and stemocleidomastoid flap. Bone graft reconstructions are rarely needed, and are often not indicated due to minimal benefit for the patient, anesthetic risks, or active cancer at metastatic sites.