DNA damage induced by chemicals and ionizing radiation is associated with the expression of negative regulators of the cell cycle. The arrest of cells in G1 and G2 phases of the cell cycle provides time for DNA repair. Asbestos fibers are carcinogenic when inhaled by both humans and animals; however, the mechanism by which the fibers exert their effect is unknown. This work was undertaken to de...

Between 1978 and 1983, 44 patients with advanced seminoma were treated with cis-platinum-based combination chemotherapy (39 patients) or with carboplatin (JM8), as a single agent (5 patients). Of the total group, 40 (90%) are alive and disease free. Two of the 4 patients who died relapsed as non-seminomatous germ-cell tumours. Results in previously untreated patients indicate that tumour volume...

Severe neonatal hyperbilirubinemia can be prevented by screening for neonatal jaundice. Transcutaneous bilirubin (TcB) measurement is a noninvasive method for screening neonates. The aim of this study was to examine the correlation between TcB measurement (using the JM-103 bilirubinometer) and total serum bilirubin (TSB) measurement. To our knowledge, this is the first study evaluating the usef...

We consider a function to minimize J : Ω → IR with Ω ⊂ IR. We make the following assumptions: J ∈ C2(Ω, IR) and is coercive. Its minimum Jm exists. Most deterministic minimization algorithms can be seen as discrete dynamical systems coming from a discretization of first or second order Cauchy problems. If one knows the infimum Jm, global optimization can be considered as Boundary Value Problem ...

The neuregulin 1 (NRG1) receptor, ErbB4, has been identified as a potential risk gene for schizophrenia. HER4/ErbB4 is a receptor tyrosine kinase whose transcript undergoes alternative splicing in the brain. Exon 16 encodes isoforms containing a metalloprotease cleavable extracellular domain (JM-a), exon 15 for a cleavage resistant form (JM-b) and exon 26 for a cytoplasmic domain (CYT-1) with a...

Isotonic saline loading and intrarenal distribution of glomerular filtration in dogs. Na-14C-ferrocyanide has been used to measure the ratio of the glomerular filtration rate (SNGFR) of the superficial (SUP) and juxtamedullary (JM) glomeruli of dogs. Using Hanssen's technique, a 0.25 to 1.0 ml single pulse injection of a 15% Na ferrocyanide solution containing 500 jiCi of '4C-ferrocyanide was r...

BACKGROUND The epidermal growth factor receptor kinases, or ErbB kinases, belong to a large sub-group of receptor tyrosine kinases (RTKs), which share a conserved catalytic core. The catalytic core of ErbB kinases have functionally diverged from other RTKs in that they are activated by a unique allosteric mechanism that involves specific interactions between the kinase core and the flanking Jux...

Intercellular adhesion molecule (ICAM)-3, a recently described counter-receptor for the lymphocyte function-associated antigen (LFA)-1 integrin, appears to play an important role in the initial phase of immune response. We have previously described the involvement of ICAM-3 in the regulation of LFA-1/ICAM-1-dependent cell-cell interaction of T lymphoblasts. In this study, we further investigate...

Mutations in the proto-oncogene c-kit, including point mutations, deletions, or duplications in the negative regulatory juxtamembrane (JM) domain or point mutations in the catalytic domain, have been observed in human and canine cancers and often result in constitutive activation of Kit in the absence of ligand binding. To identify a receptor tyrosine kinase (RTK) inhibitor capable of blocking ...

The objectives of this study were to prepare bosentan hydrate (BST) microparticles as dry powder inhalations (DPIs) via spray drying and jet milling under various parameters, to comprehensively characterize the physicochemical properties of the BST hydrate microparticles, and to evaluate the aerosol dispersion performance and dissolution behavior as DPIs. The BST microparticles were successfull...