108 research outputs found
High-dose paclitaxel in combination with doxorubicin, cyclophosphamide and peripheral blood progenitor cell rescue in patients with high-risk primary and responding metastatic breast carcinoma: toxicity profile, relationship to paclitaxel pharmacokinetics and short-term outcome
We assessed the feasibility and pharmacokinetics of high-dose infusional paclitaxel in combination with doxorubicin, cyclophosphamide, and peripheral blood progenitor cell rescue. Between October 1995 and June 1998, 63 patients with high-risk primary [stage II with ≥ 10 axillary nodes involved, stage IIIA or stage IIIB inflammatory carcinoma (n = 53)] or with stage IV responsive breast cancer (n = 10) received paclitaxel 150–775 mg/m2infused over 24 hours, doxorubicin 165 mg/m2as a continuous infusion over 96 hours, and cyclophosphamide 100 mg kg–1. There were no treatment-related deaths. Dose-limiting toxicity was reversible, predominantly sensory neuropathy following administration of paclitaxel at the 775 mg/m2dose level. Paclitaxel pharmacokinetics were non-linear at higher dose levels; higher paclitaxel dose level, AUC, and peak concentrations were associated with increased incidence of paraesthesias. No correlation between stomatitis, haematopoietic toxicities, and paclitaxel dose or pharmacokinetics was found. Kaplan–Meier estimates of 30-month event-free and overall survival for patients with primary breast carcinoma are 65% (95% CI; 51–83%) and 77% (95% CI; 64–93%). Paclitaxel up to 725 mg/m2infused over 24 hours in combination with with doxorubicin 165 mg/m2and cyclophosphamide 100 mg kg–1is tolerable. A randomized study testing this regimen against high-dose carboplatin, thiotepa and cyclophosphamide (STAMP V) is currently ongoing. © 2001 Cancer Research Campaign http://www.bjcancer.co
Mamu-A⁎01/Kb transgenic and MHC Class I knockout mice as a tool for HIV vaccine development
AbstractWe have developed a murine model expressing the rhesus macaque (RM) Mamu-A⁎01 MHC allele to characterize immune responses and vaccines based on antigens of importance to human disease processes. Towards that goal, transgenic (Tg) mice expressing chimeric RM (α1 and α2 Mamu-A⁎01 domains) and murine (α3, transmembrane, and cytoplasmic H-2Kb domains) MHC Class I molecules were derived by transgenesis of the H-2KbDb double MHC Class I knockout strain. After immunization of Mamu-A⁎01/Kb Tg mice with rVV-SIVGag–Pol, the mice generated CD8+ T-cell IFN-γ responses to several known Mamu-A⁎01 restricted epitopes from the SIV Gag and Pol antigen sequence. Fusion peptides of highly recognized CTL epitopes from SIV Pol and Gag and a strong T-help epitope were shown to be immunogenic and capable of limiting an rVV-SIVGag–Pol challenge. Mamu-A⁎01/Kb Tg mice provide a model system to study the Mamu-A⁎01 restricted T-cell response for various infectious diseases which are applicable to a study in RM
Genome wide analysis of gene expression changes in skin from patients with type 2 diabetes
Non-healing chronic ulcers are a serious complication of diabetes and are a major healthcare problem. While a host of treatments have been explored to heal or prevent these ulcers from forming, these treatments have not been found to be consistently effective in clinical trials. An understanding of the changes in gene expression in the skin of diabetic patients may provide insight into the processes and mechanisms that precede the formation of non-healing ulcers. In this study, we investigated genome wide changes in gene expression in skin between patients with type 2 diabetes and non-diabetic patients using next generation sequencing. We compared the gene expression in skin samples taken from 27 patients (13 with type 2 diabetes and 14 non-diabetic). This information may be useful in identifying the causal factors and potential therapeutic targets for the prevention and treatment of diabetic related diseases
TICH-2 Trial – Tranexamic Acid for Intracerebral Haemorrhage 2
Rationale: To assess in a pragmatic phase III prospective double blind randomised placebo-controlled trial whether tranexamic acid is safe and reduces death or dependency after spontaneous intracerebral haemorrhage (SICH). The results will determine whether tranexamic acid should be used to treat ICH.
Design: Patients will be randomised (1:1) to receive either tranexamic acid or placebo (0.9 % saline) within 8 hours of acute SICH. Randomisation will be computerised and minimised on key prognostics age; sex; time since onset; systolic blood pressure; stroke severity (NIHSS); presence of intraventricular haemorrhage and known history of antiplatelet treatment. Patients, investigators and outcome assessors will be blind to treatment allocation. The primary outcome is death or dependency (modified Rankin Scale) and telephone follow-up is at day 90.
Trial status: The start-up phase of the trial commenced on 1st March 2013, the main phase commenced 1st April 2014. The recruitment target was 300 participants in the startup phase and 2,000 in the main phase. As of 30th May 2017, 2191 patients have been recruited from 123 centres (UK, Georgia, Italy, Malaysia, Switzerland, Republic of Ireland, Turkey, Sweden, Denmark, Hungary, Spain and Poland). The objective was to have 80 UK centres and 40 international centres
A unified framework for multi-locus association analysis of both common and rare variants
<p>Abstract</p> <p>Background</p> <p>Common, complex diseases are hypothesized to result from a combination of common and rare genetic variants. We developed a unified framework for the joint association testing of both types of variants. Within the framework, we developed a union-intersection test suitable for genome-wide analysis of single nucleotide polymorphisms (SNPs), candidate gene data, as well as medical sequencing data. The union-intersection test is a composite test of association of genotype frequencies and differential correlation among markers.</p> <p>Results</p> <p>We demonstrated by computer simulation that the false positive error rate was controlled at the expected level. We also demonstrated scenarios in which the multi-locus test was more powerful than traditional single marker analysis. To illustrate use of the union-intersection test with real data, we analyzed a publically available data set of 319,813 autosomal SNPs genotyped for 938 cases of Parkinson disease and 863 neurologically normal controls for which no genome-wide significant results were found by traditional single marker analysis. We also analyzed an independent follow-up sample of 183 cases and 248 controls for replication.</p> <p>Conclusions</p> <p>We identified a single risk haplotype with a directionally consistent effect in both samples in the gene <it>GAK</it>, which is involved in clathrin-mediated membrane trafficking. We also found suggestive evidence that directionally inconsistent marginal effects from single marker analysis appeared to result from risk being driven by different haplotypes in the two samples for the genes <it>SYN3 </it>and <it>NGLY1</it>, which are involved in neurotransmitter release and proteasomal degradation, respectively. These results illustrate the utility of our unified framework for genome-wide association analysis of common, complex diseases.</p
How did we do that? Histories and political economies of rapid and just transitions
It is becoming increasingly clear that deep and rapid transitions in technologies, infrastructures and ways of organising the economy are imperative if we are to live safely within planetary boundaries. But what historical precedents are there for such profound shifts within short spaces of time, and what were the enabling conditions? When have transitions in sectors such as energy, food, finance and transport come about before, and how would they be brought about again? Do these episodes shed any analogous light on our current collective predicament? This paper develops an account of the politics and prospects of deeper transitions towards sustainability based on a critical empirical, but theoretically informed, reading of previous socio-technical transitions. The scale and urgency of our current ecological predicament is daunting and can be disempowering in the absence of strategic thinking about when analogous challenges have been encountered before and how societies have sought to overcome them. Providing a combination of concrete empirical examples drawn both from academic literature and a series of public workshops reflecting on these themes, this paper seeks to provide a basis for understanding as well as engaging with the scope for accelerated transitions within and beyond capitalism
Missense Mutations in the MEFV Gene Are Associated with Fibromyalgia Syndrome and Correlate with Elevated IL-1β Plasma Levels
BACKGROUND:Fibromyalgia syndrome (FMS), a common, chronic, widespread musculoskeletal pain disorder found in 2% of the general population and with a preponderance of 85% in females, has both genetic and environmental contributions. Patients and their parents have high plasma levels of the chemokines MCP-1 and eotaxin, providing evidence for both a genetic and an immunological/inflammatory origin for the syndrome (Zhang et al., 2008, Exp. Biol. Med. 233: 1171-1180). METHODS AND FINDINGS:In a search for a candidate gene affecting inflammatory pathways, among five screened in our patient samples (100 probands with FMS and their parents), we found 10 rare and one common alleles for MEFV, a gene in which various compound heterozygous mutations lead to Familial Mediterranean Fever (FMF). A total of 2.63 megabases of genomic sequence of the MEFV gene were scanned by direct sequencing. The collection of rare missense mutations (all heterozygotes and tested in the aggregate) had a significant elevated frequency of transmission to affecteds (p = 0.0085, one-sided, exact binomial test). Our data provide evidence that rare missense variants of the MEFV gene are, collectively, associated with risk of FMS and are present in a subset of 15% of FMS patients. This subset had, on average, high levels of plasma IL-1beta (p = 0.019) compared to FMS patients without rare variants, unaffected family members with or without rare variants, and unrelated controls of unknown genotype. IL-1beta is a cytokine associated with the function of the MEFV gene and thought to be responsible for its symptoms of fever and muscle aches. CONCLUSIONS:Since misregulation of IL-1beta expression has been predicted for patients with mutations in the MEFV gene, we conclude that patients heterozygous for rare missense variants of this gene may be predisposed to FMS, possibly triggered by environmental factors
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Affective technologies of welfare deterrence in Australia and the United Kingdom
Across the political spectrum of different historical periods, welfare deterrence has shaped social security and immigration policy in both Australia and the United Kingdom. Deterrence discourages access to state welfare through the production and mobilization of negative affect to deter specific groups from claiming state support, and by crafting public affect (of fear and disgust) about these target populations in order to garner consent for punitive policies. In this paper, we argue that deterrence works as a human technology where the crafting of negative affect operates as a technology of statecraft. Through critical juxtaposition and multiple genealogies of deterrence, this paper meshes time and space, and colony/colonizer and metropole, to show the historical and contemporary connectivity of the affective nature of deterrence. We identify five main operations that produce the ‘feel’ of deterrence: stigmatization by design, destitution by design, deterrent architecture, the control of movement, and the centrality of labour; as well as tracing the political economy of deterrence
Clinical Utility of Tetramer-Based Immune Monitoring in Allogeneic Stem Cell Transplantation
The Relative Earnings of Contingent Faculty in Higher Education
Relative earnings, Contingent faculty, Higher education,
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