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GAB2 is involved in differential pi3-kinase signaling by two splice forms of C-kit.

The stem cell factor receptor/c-Kit plays an important physiological role in hematopoesis, melanogenesis and gametogenesis. It has also been implicated in numerous human malignancies. Signal transduction pathways shown to be of importance for c-Kit mediated transformation include the PI3-kinase/Akt pathway. We have previously shown that two alternative splice forms of c-Kit, denoted GNNK- and GNNK

Nanosecond and femtosecond probing of the dynamics of the UV-photodissociation of perfluoroethyliodide C2F5I

The ns photodissociation of perfluoroethyliodide C2F5I at 266 nm has been studied by using the resonant two-photon ionization (R2PI) technique. Recoil anisotropy parameters as well as average translational energy of the I atoms in the fine structure states P-2(1/2) and P-2(3/2) have been determined. The main contribution (99%) to the absorption at 266 nm was found to be caused by a parallel transi

Electrophysiological evaluation and visual outcome in patients with central retinal vein occlusion, primary open-angle glaucoma and neovascular glaucoma.

Purpose: To evaluate patients with central retinal vein occlusion (CRVO) and neovascular glaucoma (NVG) using electrophysiology in order to gain better understanding of visual outcome and risk factors, such as previously diagnosed primary open-angle glaucoma (POAG). Methods: Eighty-three patients (83 eyes) initially presenting with CRVO and examined with full-field electroretinography (ERG) within

Virtual reality cataract surgery training: learning curves and concurrent validity.

Purpose: To investigate initial learning curves on a virtual reality (VR) eye surgery simulator and whether achieved skills are transferable between tasks. Methods: Thirty-five medical students were randomized to complete ten iterations on either the VR Caspulorhexis module (group A) or the Cataract navigation training module (group B) and then two iterations on the other module. Learning curves w

Analyzing Movements Development and Evaluation of the Body Awareness Scale Movement Quality (BAS MQ).

Limitations in everyday movements, physical activities are/or pain are the main reasons for seeking help from a physiotherapist. The purpose of this study was to investigate the psychometric properties of the Body Awareness Scale Movement Quality (BAS MQ) focusing on factor structure, validity and reliability and to explore whether BAS MQ could discriminate between healthy individuals and patients

Spatial coordinate systems in demonstrative meaning

Exploring the semantic encoding of a group of crosslinguistically uncommon "spatial-coordinate demonstratives", this work establishes the existence of demonstratives whose function is to project angular search domains, thus invoking proper coordinate systems (or "frames of reference"). What is special about these distinctions is that they rely on a spatial asymmetry in relativizing a demonstrative

Serum Amyloid A Protein and C-Reactive Protein in Normal Pregnancy and Preeclampsia.

Aims: To study plasma levels of serum amyloid A protein and C-reactive protein in pregnant women with and without preeclampsia and non-pregnant women. Plasma levels of haptoglobin, orosomucoid and ceruloplasmin were also analyzed. Methods: The study included 295 women with uncomplicated pregnancies, 57 women diagnosed with preeclampsia, and 58 healthy non-pregnant women. Plasma concentrations of a

PDGF-A/PDGF alpha-receptor signaling is required for lung growth and the formation of alveoli but not for early lung branching morphogenesis.

Platelet-derived growth factors (PDGF) constitute a family of four gene products (PDGF-A-D) acting by means of two receptor tyrosine kinases, PDGFR alpha and beta. Three of the ligands (PDGF-A, -B, and -C) bind to PDGFR alpha with high affinity. Knockout of pdgf-a in mice has demonstrated a role for PDGF-A in the recruitment of smooth muscle cells to the alveolar sacs and their further compartment

Toxicity and Dose Response of Intra-Abdominally Administered Poly-L-alpha-Lysine and Poly-L-Glutamate for Postoperative Adhesion Protection.

Background/Aims: Two differently charged polypeptides, poly-L-lysine (PL) and poly-L-glutamate (PG), have previously been shown to reduce postoperative intra-abdominal adhesions. This study aims to investigate the possible toxic effects and to establish a lowest effective antiadhesive dose. Methods: 152 mice were investigated with a well-known adhesion model and given different concentrations of t

Promoter Methylation of PTEN is a Significant Prognostic Factor in Melanoma Survival.

Structural compromise of the tumor suppressor gene, PTEN occurs in 10% of melanoma specimens and loss of PTEN expression through DNA methylation of the PTEN promoter region has also been reported in a number of other malignancies. However, the role of PTEN promoter methylation in melanoma is not well understood. We thus sought to elucidate the prevalence of PTEN promoter methylation in melanoma sp

Sclerosing injections in midportion Achilles tendinopathy: a retrospective study of 25 patients.

Sclerosing injections under ultrasonographic guidance is a new method of treatment for persistent pain in Achilles tendinosis. Good results, even superior to those of surgery, have been described. We report the outcome of 25 patients with midportion tendinosis receiving sclerosing treatment. Twenty-eight consecutive patients (29 tendons) with ultrasonographical findings of midportion tendinosis ex

Identification of the major phosphorylation sites for protein kinase C in kit/stem cell factor receptor in vitro and in intact cells

The c-kit-encoded tyrosine kinase receptor for stem cell factor (Kit/SCFR) is crucial for the development of hematopoietic cells, melanoblasts, and germ cells. Ligand stimulation of Kit/SCFR leads to receptor dimerization and autophosphorylation on tyrosine residues. We recently showed, that protein kinase C (PKC) acts in an SCF-stimulated negative feedback loop, which controls Kit/SCFR tyrosine k

Fennoscandia revisited: a spatially improved tree-ring reconstruction of summer temperatures for the last 900 years

Despite the spatially homogenous summer temperaturepattern in Fennoscandia, there are large spreadsamong the many existing reconstructions, resulting in anuncertainty in the timing and amplitude of past changes.Also, there has been a general bias towards northernmostFennoscandia. In an attempt to provide a more spatiallycoherent view of summer (June–August, JJA) temperaturevariability within the l

Cell therapy for Parkinson's disease: what next?

The idea to use transplants of dopamine-producing cells to substitute for the lost midbrain dopamine neurons in Parkinson's disease (PD) goes back to the 1970s. In this review we give an overview of the history of cell transplantation in animal models of PD, and summarize the experience gained from the open-label and placebo-controlled clinical trials performed so far using intrastriatal transplan

Higher occurrence of childhood cancer in families with germline mutations in BRCA2, MMR and CDKN2A genes.

The contribution of hereditary factors for development of childhood tumors is limited to some few known syndromes associated with predominance of tumors in childhood. Occurrence of childhood tumors in hereditary cancer syndromes such as BRCA1/2 associated breast and ovarian cancer, DNA-mismatch repair (MMR) genes associated hereditary non polyposis colorectal cancer and CDKN2A associated familial