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Estrogen and Serotonin – old dogs, new tricks, Implications for pancreatic beta-cell function

Popular Abstract in Swedish Internationella diabetesförbundet räknar med att en tiondel av världens befolkning kommer att ha någon form av diabetes om 50 år. Diabetes är en sjukdom med global spridning som innebär att kroppen inte kan ta hand om all den näring man intar, framförallt inte sockret. Detta medför att sockerhalten i blodet höjs. Insulin produceras efter en måltid och signalerar till krIslet hormone secretion is tightly regulated by metabolic status as well as local and circulating factors. These factors can activate different receptors on the pancreatic islet cells, for instance G-protein coupled receptors (GPCRs). When activated, these receptors are able to fine-tune islet hormone secretion and regulate overall β-cell function. Estrogen and serotonin are circulating factors t

Environmental barriers, person-environment fit and mortality among community-dwelling very old people

Background: Environmental barriers are associated with disability-related outcomes in older people but little is known of the effect of environmental barriers on mortality. The aim of this study was to examine whether objectively measured barriers in the outdoor, entrance and indoor environments are associated with mortality among community-dwelling 80- to 89-year-old single-living people. Methods

The G protein-coupled receptor GPR30 signalosome - A novel G protein-independent mechanism regulating cAMP signaling and receptor trafficking

Popular Abstract in Swedish Den här avhandlingen handlar om ett protein, en receptor, kallad GPR30. GPR30 tillhör proteinfamiljen G protein-kopplade receptorer vilka är nödvändiga för att celler ska kunna kommunicera med varandra och med sin omgivning. Förenklat sätt kan de ses sitta på ytan av en cell där de väntar på att någonting ska binda till dem, vilket aktiverar receptorerna och får dem attThe large protein family called G Protein-coupled receptors (GPCRs) has co-evolved with life throughout evolution; from single cell organisms all the way to complex beings such as us humans. The fact that GPCRs are involved in essentially every physiological event, and that ~50% of drugs on the current market are either directly or indirectly targeted towards the function of GPCRs, we can be certa

A BRCA2 mutation incorrectly mapped in the original BRCA2 reference sequence, is a common West Danish founder mutation disrupting mRNA splicing

Inherited mutations in the tumor suppressor genes BRCA1 and BRCA2 predispose carriers to breast and ovarian cancer. The authors have identified a mutation in BRCA2, 7845+1G > A (c.7617+1G > A), not previously regarded as deleterious because of incorrect mapping of the splice junction in the originally published genomic reference sequence. This reference sequence is generally used in many laborator

Distinct Effects of Ligand-Induced PDGFR alpha and PDGFR beta Signaling in the Human Rhabdomyosarcoma Tumor Cell and Stroma Cell Compartments

Platelet-derived growth factor receptors (PDGFR) alpha and beta have been suggested as potential targets for treatment of rhabdomyosarcoma, the most common soft tissue sarcoma in children. This study identifies biologic activities linked to PDGF signaling in rhabdomyosarcoma models and human sample collections. Analysis of gene expression profiles of 101 primary human rhabdomyosarcomas revealed el

Effect of dietary alpha-ketoglutarate on blood lipid profile during hypercholesterolaemia in rats

Objective. The aim of the study was to determine the effect of -ketoglutarate on the blood lipid profile using a rat animal model with experimentally induced hypercholesterolaemia. Material and methods. The female and male (30/30) Wistar rats had ad libitum access to a diet containing cholesterol (1 %) and lard (10 %) throughout the entire experimental period (120 days). On day 60 of the study, bo

Therapeutic vaccination against fibronectin ED-A attenuates progression of metastatic breast cancer.

Therapeutic vaccination targeting self-molecules is an attractive alternative to monoclonal antibody-based therapies for cancer and various inflammatory diseases. However, development of cancer vaccines targeting self-molecules has proven difficult. One complicating factor is that tumor cells have developed strategies to escape recognition by the immune system. Antigens specifically expressed by t

HER2 status in hormone receptor positive premenopausal primary breast cancer adds prognostic, but not tamoxifen treatment predictive, information.

Background Overexpression of human epidermal growth factor receptor 2 (HER2) or amplification of its gene is a prognostic factor in primary breast cancer and a predictor for tamoxifen treatment efficacy in oestrogen receptor (ER) positive disease. In the present study we explored a defined cohort of breast cancer patients included in a randomised trial in order to assess prognostic and tamoxifen t

Mechanical Tensioning of High-Strength Aluminum Alloy Friction Stir Welds

The extent to which in-situ global mechanical tensioning (GMT) can be used to modify the residual stress state in friction stir (FS) welds is investigated in this article. Residual stress distributions have been determined by synchrotron X-ray and neutron diffraction for four sets of FS welds in high-strength AA7449-W51 and lithium containing AA2199-T8 aerospace aluminum alloys subjected to a syst

Ionization Constants pKa of Cardiolipin.

Cardiolipin is a phospholipid found in the inner mitochondrial membrane and in bacteria, and it is associated with many physiological functions. Cardiolipin has a dimeric structure consisting of two phosphatidyl residues connected by a glycerol bridge and four acyl chains, and therefore it can carry two negative charges. The pKa values of the phosphate groups have previously been reported to diffe

Evaluation of assimilatory sulphur metabolism in Caldicellulosiruptor saccharolyticus

Caldicellulosiruptor saccharolyticus has gained reputation as being among the best microorganisms to produce H2 due to possession of various appropriate features. The quest to develop an inexpensive cultivation medium led to determine a possible replacement of the expensive component cysteine, i.e. sulphate. C. saccharolyticus assimilated sulphate successfully in absence of a reducing agent withou

Modeling dengue outbreaks

We introduce a dengue model (SEIR) where the human individuals are treated on an individual basis (IBM) while the mosquito population, produced by an independent model, is treated by compartments (SEI). We study the spread of epidemics by the sole action of the mosquito. Exponential, deterministic and experimental distributions for the (human) exposed period are considered in two weather scenarios

Measuring individual risk attitudes in the lab: Task or ask? An empirical comparison

This paper reports on an empirical comparison of two prominent measures of individual risk attitudes - the Holt and Laury (2002) lottery-choice task and the multi-item questionnaire advocated by Dohmen et al. (2011) - with respect to their within-subject stability over time (one year) and their correlation with actual risk-taking behavior in the lab - here the amount sent in a trust game (Berg et