99 research outputs found

    All the choice and all the responsibilities: an exploration of the agency perceived by women with children around their childbearing

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    Findings from an exploratory study of agency around childbearing perceived by women with children from a feminist perspective are presented. Contemporary women‘s childbearing has confusedly been portrayed as chosen but constrained and also a duty. Most recently women have been considered to have a duty to reproduce to stimulate economic growth. Furthermore, a plethora of fertility theories have been put forward to explain recent declining fertility but these have found to be incapable of explaining fertility trends and the complexity of childbearing negotiations. Amongst these deliberations women‘s interests tend to get lost. This research attempts to reverse that tendency. Taking part in this research were 26 women each of whom had at least one child of nine years of age or younger from in and around Orange, NSW. Data was collected using in-depth semi-structured interviews and focus groups. As agency is ill-defined within sociology, seven criteria for recognising agency were constructed from a review of sociological theory. These criteria were used as a series of lenses through which the data were viewed; allowing for the explanatory powers of theories to be compared. The findings show that women‘s agency around childbearing was intermittent and imperfect but not completely absent. Important to the discourse of choice prevalent in the popular media and expounded by economic rationalists, the concept of choice was shown to be simplistic. Rather the women described complex negotiations between biological factors, social influences and personal preferences. This research demonstrates that despite making some progress in workforce participation, women‘s expected role in the home curtailed what they could achieve. The thesis furthers understanding of women‘s childbearing agency, has implications for public policy, provides insights into the relevance of sociological theories to women who have children and provides a novel methodological approach for assessing agency

    Alternative farrowing systems: design criteria for farrowing systems based on the biological needs of sows and piglets

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    New insights into the genetic etiology of Alzheimer's disease and related dementias

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    Characterization of the genetic landscape of Alzheimer's disease (AD) and related dementias (ADD) provides a unique opportunity for a better understanding of the associated pathophysiological processes. We performed a two-stage genome-wide association study totaling 111,326 clinically diagnosed/'proxy' AD cases and 677,663 controls. We found 75 risk loci, of which 42 were new at the time of analysis. Pathway enrichment analyses confirmed the involvement of amyloid/tau pathways and highlighted microglia implication. Gene prioritization in the new loci identified 31 genes that were suggestive of new genetically associated processes, including the tumor necrosis factor alpha pathway through the linear ubiquitin chain assembly complex. We also built a new genetic risk score associated with the risk of future AD/dementia or progression from mild cognitive impairment to AD/dementia. The improvement in prediction led to a 1.6- to 1.9-fold increase in AD risk from the lowest to the highest decile, in addition to effects of age and the APOE ε4 allele

    Cholesterol accumulation caused by low density lipoprotein receptor deficiency or a cholesterol-rich diet results in ectopic bone formation during experimental osteoarthritis

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    Contains fulltext : 125532.pdf (publisher's version ) (Open Access)INTRODUCTION: Osteoarthritis (OA) is associated with the metabolic syndrome, however the underlying mechanisms remain unclear. We investigated whether low density lipoprotein (LDL) accumulation leads to increased LDL uptake by synovial macrophages and affects synovial activation, cartilage destruction and enthesophyte/osteophyte formation during experimental OA in mice. METHODS: LDL receptor deficient (LDLr-/-) mice and wild type (WT) controls received a cholesterol-rich or control diet for 120 days. Experimental OA was induced by intra-articular injection of collagenase twelve weeks after start of the diet. OA knee joints and synovial wash-outs were analyzed for OA-related changes. Murine bone marrow derived macrophages were stimulated with oxidized LDL (oxLDL), whereupon growth factor presence and gene expression were analyzed. RESULTS: A cholesterol-rich diet increased apolipoprotein B (ApoB) accumulation in synovial macrophages. Although increased LDL levels did not enhance thickening of the synovial lining, S100A8 expression within macrophages was increased in WT mice after receiving a cholesterol-rich diet, reflecting an elevated activation status. Both a cholesterol-rich diet and LDLr deficiency had no effect on cartilage damage; in contrast, ectopic bone formation was increased within joint ligaments (fold increase 6.7 and 6.1, respectively). Moreover, increased osteophyte size was found at the margins of the tibial plateau (4.4 fold increase after a cholesterol-rich diet and 5.3 fold increase in LDLr-/- mice). Synovial wash-outs of LDLr-/- mice and supernatants of macrophages stimulated with oxLDL led to increased transforming growth factor-beta (TGF-beta) signaling compared to controls. CONCLUSIONS: LDL accumulation within synovial lining cells leads to increased activation of synovium and osteophyte formation in experimental OA. OxLDL uptake by macrophages activates growth factors of the TGF-superfamily
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