https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Plasma lipidome variation during the second half of the human lifespan is associated with age and sex but minimally with BMI https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:45150 Wed 26 Oct 2022 19:29:23 AEDT ]]> Genome-wide significant results identified for plasma apolipoprotein H levels in middle-aged and older adults https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:24759 -11). The results were replicated in an independent cohort, the Hunter Community Study (p < 0.002) (n = 313). Conditional and joint analysis (COJO) confirmed the association of the chromosomal 17 region with ApoH levels. The set of independent SNPs identified by COJO explained 23% of the variance. The relationships between the top SNPs and cardiovascular/lipid/cognition measures and diabetes were assessed in Sydney MAS, with suggestive results observed for diabetes and cognitive performance. However, replication of these results in the smaller OATS cohort was not found. This work provides impetus for future research to better understand the contribution of genetics to ApoH levels and its possible impacts on health.]]> Wed 15 Dec 2021 16:09:56 AEDT ]]> Cellular responses during morphological transformation in Azospirillum brasilense and its flcA knockout mutant https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18830 Wed 11 Apr 2018 09:26:28 AEST ]]> Plasma apolipoproteins and physical and cognitive health in very old individuals https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34724 Thu 17 Feb 2022 09:27:08 AEDT ]]> APOE genotype differentially modulates plasma lipids in healthy older individuals, with relevance to brain health https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:36726 ɛ4/ɛ3> ɛ3/ɛ3> ɛ2/ɛ3> ɛ2/ɛ2). The greatest variation in lipids was related to the ɛ2 isoform, where various lysophosphatidylcholines and all phosphatidylethanolamine (PE) subclasses were elevated relative to ɛ3/ɛ3 and ɛ4 carriers. APOE ɛ4 carriers had reduced phosphatidylinositol relative to ɛ3/ɛ3 and ɛ2 carriers. Logistic regression revealed that ɛ2 carriers were at least 4 times higher odds of being in the highest tertile of PE lipid level relative to ɛ3/ɛ3. The elevation in PE and other phospholipids in ɛ2 carriers may indicate the protective effect of ɛ2 is linked to these phospholipids. Additionally, high baseline PE in cognitively normal participants predicted protection against cognitive decline six years later. Our data suggest substantial modulation of plasma lipids by APOE genotype and therefore indicates possible lipid targets and pathomechanisms involved in AD risk.]]> Thu 02 Jul 2020 09:10:42 AEST ]]> Profilin-1 overexpression in MDA-MB-231 breast cancer cells is associated with alterations in proteomics biomarkers of cell proliferation, survival, and motility as revealed by global proteomics analyses https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:19788 cell proliferation (FKPB1A, HDGF, MIF, PRDX1, TXNRD1, LGALS1, STMN1, LASP1, S100A11, S100A6), survival (HSPE1, HSPB1, HSPD1, HSPA5 and PPIA, YWHAZ, CFL1, NME1) and motility (CFL1, CORO1B, PFN2, PLS3, FLNA, FLNB, NME2, ARHGDIB). In view of the pleotropic effects of PFN1 overexpression in breast cancer cells as suggested by these new findings, we propose that PFN1-induced phenotypic changes in cancer cells involve multiple mechanisms. Our data reported here might also offer innovative strategies for identification and validation of novel therapeutic targets and companion diagnostics for persons with, or susceptibility to, breast cancer.]]> Sat 24 Mar 2018 07:57:13 AEDT ]]> Plasma protein profiling of mild cognitive impairment and Alzheimer's disease across two independent cohorts https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:28945 Sat 24 Mar 2018 07:31:25 AEDT ]]> Comparative proteomics of the toxigenic diazotroph Raphidiopsis raciborskii (cyanobacteria) in response to iron https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38846 Raphidiopsis raciborskii is an invasive bloom-forming cyanobacteria with the flexibility to utilize atmospheric and fixed nitrogen. Since nitrogen-fixation has a high requirement for iron as an ezyme cofactor, we hypothesize that iron availability would determine the success of the species under nitrogen-fixing conditions. This study compares the proteomic response of cylindrospermopsin-producing and non-toxic strains of R. racibroskii to reduced iron concentrations, under nitrogen-fixing conditions, to examine any strain-specific adaptations that might increase fitness under these conditions. We also compared their proteomic responses at exponential and stationary growth phases to capture the changes throughout the growth cycle. Overall, the toxic strain was more competitive under Fe-starved conditions during exponential phase, with upregulated growth and transport-related proteins. The non-toxic strain showed reduced protein expression across multiple primary metabolism pathways. We propose that the increased expression of porin proteins during the exponential growth phase enables toxic strains to persist under Fe-starved conditions with this ability providing a potential explanation for the increased fitness of cylindrospermoipsin-producing strains during unfavourable environmental conditions.]]> Mon 06 May 2024 13:15:09 AEST ]]>