The effects of elevated hemoglobin A1C on cognitive function in elderly type II diabetics in the Look Ahead study

OBJECTIVE: Prolonged elevation of blood glucose levels in Type 2 Diabetes is related to a host of medical complications, most of which are mediated by micro and macro vascular damage. Importantly, diabetes is associated with accelerated cognitive decline and compromised brain health as the cerebral vasculature undergoes negative changes stemming from hyperglycemia. It is hypothesized that participants in the Look Ahead Brain study with higher HbA1c levels will exhibit worse performance on the cognitive measures, specifically on tasks assessing executive function. METHODS: Data on participants from the Look Ahead study who also participated in the Look Ahead Brain ancillary study (n = 113) were analyzed. This included HbA1c levels at year 10 (the year that participants were administered the cognitive assessment), mean HbA1c, and change in HbA1c from baseline to year. In order to assess executive function the results on two cognitive tests, the Modified Stroop Color and Word Test and the Trail Making Test, were analyzed. Then, relationships between HbA1c and performance on each of these cognitive tasks were analyzed using two approaches. First, the cohort was split into two group based on HbA1c (HbA1c ≤ 7% vs HbA1c > 7%). The latter of the two groups represented participants will poorer glycemic control. Second, linear correlations were assessed using the full range of HbA1c values as a continuous variable. RESULTS: There were no significant differences between HbA1c groups and performance on either of the cognitive tests. Interestingly, although not statistically significant, those with higher HbA1c levels performed slightly better on cognitive tasks. Correlation analyses revealed further trends in the direction opposite than expected, such that higher HbA1c levels were associated with better scores on both tests. CONCLUSION: The surprising results of this study are evidence of the fact that a great deal has yet to be learned about the effects of T2DM and cognitive decline. There are many potential future directions for the Look Ahead Brain data, and further analyses might provide clarifications to the results of this study

On the Inverse Problem Relative to Dynamics of the w Function

In this paper we shall study the inverse problem relative to dynamics of the w function which is a special arithmetic function and shall get some results.Comment: 11 page

The role of TNF-receptor family members and other TRAF-dependent receptors in bone resorption

The contribution of osteoclasts to the process of bone loss in inflammatory arthritis has recently been demonstrated. Studies in osteoclast biology have led to the identification of factors responsible for the differentiation and activation of osteoclasts, the most important of which is the receptor activator of NF-κB ligand/osteoclast differentiation factor (RANKL/ODF), a tumor necrosis factor (TNF)-like protein. The RANKL/ODF receptor, receptor activator of NF-κB (RANK), is a TNF-receptor family member present on both osteoclast precursors and mature osteoclasts. Like other TNF-family receptors and the IL-1 receptor, RANK mediates its signal transduction via TNF receptor-associated factor (TRAF) proteins, suggesting that the signaling pathways activated by RANK and other inflammatory cytokines involved in osteoclast differentiation and activation are interconnected

Health literacy and the framing of health messages in the gay community

An aim of current UK health policy is to ‘fully engage’ not only sick but also well people in pursuit of health (Wanless 2004). In this policy discourse, it is assumed that ‘health literacy’ is one of the vehicles for achieving that full engagement: namely, individuals must understand the best information about how to pursue health, not only have access to it. The present project focuses on three related issues: (1) how health information is ‘framed’, and (2) how that information is understood, evaluated and acted on by those who receive it and (3) in light of the results, what dimensions ‘health literacy’ must have if changes in health-related behaviour are to ensue. Our focus is men’s health. It is widely recognised that men are less likely to engage with their own health than women with theirs. We choose gay men as a critical case. We single out varieties of gay men in Manchester and specifically the health issues they share with other men

Angular Correlations in Internal Pair Conversion of Aligned Heavy Nuclei

We calculate the spatial correlation of electrons and positrons emitted by internal pair conversion of Coulomb excited nuclei in heavy ion collisions. The alignment or polarization of the nucleus results in an anisotropic emission of the electron-positron pairs which is closely related to the anisotropic emission of $\gamma$-rays. However, the angular correlation in the case of internal pair conversion exhibits diverse patterns. This might be relevant when investigating atomic processes in heavy-ion collisions performed at the Coulomb barrier.Comment: 27 pages + 6 eps figures, uses revtex.sty and epsf.sty, tar-compressed and uuencoded with uufile

217 MECHANISMS OF ACTION OF ESE1, A NOVEL TRANSCRIPTIONAL REGULATOR OF CARTILAGE REMODELING, IN MMP-13 REGULATION

Ischemic preconditioning (IPC) limits myocardial infarct size through the activation of the PI3K-Akt signal cascade; however, little is known about the roles of individual PI3K isoforms in cardioprotection. We aimed, therefore, to elucidate the role of the PI3K alpha isoform in cardioprotection Pharmacological PI3K alpha inhibition was assessed in isolated-perfused mouse hearts subjected to ischemia/reperfusion injury (IRI), either during the IPC procedure or at reperfusion. PI3K alpha inhibition abrogated the IPC-induced protective effect at reperfusion, but not when given only during the IPC protocol. These results were confirmed in an in vivo model. Moreover, pharmacological PI3K alpha activation by insulin at reperfusion was sufficient to confer cardioprotection against IRI. In addition, PI3K alpha was shown to be expressed and activated in mouse cardiomyocytes, mouse cardiac endothelial cells, as well as in mouse and human heart tissue. Furthermore, PI3K alpha was shown to mediate its effect though the inhibition of mitochondrial permeability transition pore opening. In conclusion, PI3K alpha activity is required during the early reperfusion phase to reduce myocardial infarct size. This suggests that strategies specifically enhancing the alpha isoform of PI3K at reperfusion promote tissue salvage and as such, and could provide a direct target for clinical treatment of IRI.Fundacion Rafael del Pino FONDECYT 3160298 British Heart Foundation Cancer Research UK C23338/A15965 UK NIHR University College London Hospitals Biomedical Research Centr

Getting students out there; using community partnerships to engage students

Purpose The purpose of the paper is to discuss the “Q-Step in the Community” programme, part of the Q-Step Centre based in the Sociology Department at Manchester Metropolitan University, designed to help address the skills gap in quantitative methods (QM) that is evident across parts of the UK higher-education sector. “Q-Step in the Community” is a data-driven work-based learning programme that works in partnership with local organisations to provide placement opportunities for final year undergraduates and postgraduates. Students conduct a quantitative research project, which is typically identified by the placement provider. Design/methodology/approach The authors use quantitative and qualitative feedback from students and placement providers, along with our own reflections on the process to evaluate the placement programme. Data were collected through a focus group and email interviews with placement providers, along with a questionnaire, which was distributed to “Q-Step in the Community” alumni. Findings Data-driven work-based learning opportunities allow students to develop and demonstrate their quantitative skills and support networking opportunities whilst also developing valuable soft-skills experience of the workplace that develops their career-readiness. In addition, those opportunities provide valuable research for placement providers, which support their sustainability and enhance their service delivery. Research limitations/implications The research focusses solely on one programme at one university offering quantitative data driven work-based learning opportunities at undergraduate and post-graduate level. It is not possible to make valid comparisons between those who do a placement with those who do not. Originality/value Views of key stakeholders in the process have been sought for this research, which can be useful to consider for others considering developing similar programmes for their students

Shell structure underlying the evolution of quadrupole collectivity in S-38 and S-40 probed by transient-field g-factor measurements on fast radioactive beams

The shell structure underlying shape changes in neutron-rich nuclei between N=20 and N=28 has been investigated by a novel application of the transient field technique to measure the first-excited state g factors in S-38 and S-40 produced as fast radioactive beams. Details of the new methodology are presented. In both S-38 and S-40 there is a fine balance between the proton and neutron contributions to the magnetic moments. Shell model calculations which describe the level schemes and quadrupole properties of these nuclei also give a satisfactory explanation of the g factors. In S-38 the g factor is extremely sensitive to the occupation of the neutron p3/2 orbit above the N=28 shell gap as occupation of this orbit strongly affects the proton configuration. The g factor of deformed S-40 does not resemble that of a conventional collective nucleus because spin contributions are more important than usual.Comment: 10 pages, 36 figures, accepted for publication in Physical Review

The role played by cell-substrate interactions in the pathogenesis of osteoclast-mediated peri-implant osteolysis

Prosthetic wear debris-induced peri-implant osteolysis is a major cause of aseptic loosening after total joint replacement. In this condition, wear particles released from the implant components induce a granulomatous inflammatory reaction at the interface between implant and adjacent bone, leading to progressive bone resorption and loss of fixation. The present study was undertaken to characterize definitively the phenotype of osteoclast-like cells associated with regions of peri-implant focal bone resorption and to compare the phenotypic features of these cells with those of mononucleated and multinucleated cells associated with polyethylene wear particles. Peri-implant tissues were obtained from patients undergoing hip revision surgery for aseptic loosening after total joint replacement. Cells were examined for the expression of several markers associated with the osteoclast phenotype using immunohistochemistry, histochemistry, and/or in situ hybridization. CD68 protein, a marker expressed by multiple macrophage lineage cell types, was detected in mononucleated and multinucleated cells associated with polyethylene particles and the bone surface. Cathepsin K and tartrate-resistant acid phosphatase were expressed highly in both mononucleated and multinucleated cells associated with the bone surface. Levels of expression were much lower in cells associated with polyethylene particles. High levels of β(3 )integrin protein were detected in cells in contact with bone. Multinucleated cells associated with polyethylene particles exhibited faint positive staining. Calcitonin receptor mRNA expression was detected solely in multinucleated cells present in resorption lacunae on the bone surface and was absent in cells associated with polyethylene particles. Our findings provide further evidence that cells expressing the full repertoire of osteoclast phenotypic markers are involved in the pathogenesis of peri-implant osteolysis after total joint replacement. They also demonstrate that foreign body giant cells, although believed to be phenotypically and functionally distinct from osteoclasts, express many osteoclast-associated genes and gene products. However, the levels and patterns of expression of these genes in the two cell types differ. We speculate that, in addition to the role of cytokines and growth factors, the substrate with which these cells interact plays a critical role in their differential phenotypic and functional properties

Further search for a neutral boson with a mass around 9 MeV/c2

Two dedicated experiments on internal pair conversion (IPC) of isoscalar M1 transitions were carried out in order to test a 9 MeV/c2 X-boson scenario. In the 7Li(p,e+e-)8Be reaction at 1.1 MeV proton energy to the predominantly T=0 level at 18.15 MeV, a significant deviation from IPC was observed at large pair correlation angles. In the 11B(d,n e+e-)12C reaction at 1.6 MeV, leading to the 12.71 MeV 1+ level with pure T=0 character, an anomaly was observed at 9 MeV/c2. The compatibility of the results with the scenario is discussed.Comment: 12 pages, 5 figures, 2 table