“The type I human interferon alpha (hIFN-alpha) family consists of small proteins AZD9291 cost that
exert a multiplicity of biological actions including antiviral, antiproliferative and immunomodulatory effects. However, though administration of recombinant hIFN-alpha 2b is the current treatment for chronic hepatitis B and C and for some types of cancers, therapy outcomes have not been completely satisfactory. The short serum half-life and rapid clearance of the cytokine accounts for its low in vivo biological activity.\n\nHere we describe and characterize a long-acting rhIFN-alpha 2b mutein, 4N-IFN, which has been created by introducing four N-glycosylation sites via site-directed mutagenesis. The hyperglycosylated protein was found to have a 25-fold longer plasma half-life than the non-glycosylated rhIFN-alpha 2b, even greater than the commercial pegylated derivative Intron-A PEG. In addition, glycosylation increased the in vitro stability of the mutein against serum protease inactivation. Selleckchem NVP-LDE225 Interestingly, despite its lower in vitro activity, 4N-IFN showed
a markedly enhanced in vivo antitumor activity in human prostate carcinoma implanted in nude mice. MALDI-TOF MS and HPAEC-PAD carbohydrate analyses revealed the presence of high amounts of tetrasialylated (40%) and trisialylated (28%) N-glycan structures, which are consequently responsible for the improved characteristics of the cytokine, making 4N-IFN a new therapeutic candidate for viral and malignant diseases. (C) 2010 Elsevier B.V. All rights
“Osteoporosis is caused by an imbalance in bone remodeling, a process involving bone-building osteoblasts and bone-resorptive osteoclasts. Excessive reactive oxygen species and inflammatory responses have been shown to stimulate Bioactive Compound Library differentiation and function of osteoclasts while inducing osteoblast apoptosis and suppressing osteoblastic proliferation and differentiation via extracellular signal-regulated kinases (ERK), ERK-dependent nuclear factor-kappa B and Wnt/beta-catenin signaling pathways. The anti-oxidant and anti-inflammatory green tea catechins (GTC) have been shown to promote osteoblastogenesis, suppress osteoclastogenesis and stimulate the differentiation of mesenchymal stem cells into osteoblasts rather than adipocytes by modulating the signaling pathways. This paper reviews the pharmacokinetics and metabolism of GTC, their bone-protective activities evidenced in in vitro and in vivo studies, and the limited clinical studies supporting these preclinical findings. In light of the physical, economical, and social burdens due to osteoporosis, easily accessible and affordable preventive measures such as GTC deserves further clinical studies prior to its clinical application.”
“The aim of this retrospective study was to correlate the width of the cleft lip with the severity of the nasal deformity in unilateral cleft lip and palate (UCLP) patients before primary lip repair.