167 research outputs found
Efficacy and predictors of recovery of function after eye movement training in 296 hemianopic patients
Funding Development of NeuroEyeCoachTM and completion of regulatory requirements were funded by NovaVision Inc and developed by Arash Sahraie and Josef Zihl with the help of a technical team (Insiso Ltd.). Acknowledgements We would like to acknowledge the help of Insiso Ltd., UK for software support and data download. AMHC is supported by a Biotechnology and Biological Sciences Research Council (BBSRC) [grant number BB/J01446X/1] Case Ph.D. Studentship awarded by East of Scotland Bioscience (EastBio) Doctoral Training Partnership in collaboration with NovaVision.Peer reviewedPublisher PD
Low availability of carnitine precursors as a possible reason for the diminished plasma carnitine concentrations in pregnant women
<p>Abstract</p> <p>Background</p> <p>It has been shown that plasma carnitine concentrations decrease markedly during gestation. A recent study performed with a low number of subjects suggested that this effect could be due to a low iron status which leads to an impairment of carnitine synthesis. The present study aimed to confirm this finding in a greater number of subjects. It was moreover intended to find out whether low carnitine concentrations during pregnancy could be due to a reduced availability of precursors of carnitine synthesis, namely trimethyllysine (TML) and Îł-butyrobetaine (BB).</p> <p>Methods</p> <p>Blood samples of 79 healthy pregnant women collected at delivery were used for this study.</p> <p>Results</p> <p>There was only a weak, non-significant (P > 0.05), correlation between plasma concentration of ferritin and those of free and total carnitine. There was no correlation between other parameters of iron status (plasma iron concentration, hemoglobin, MCV, MCH) and plasma concentration of free and total carnitine. There were, however, significant (P < 0.05) positive correlations between concentrations of TML and BB and those of free and total carnitine in plasma.</p> <p>Conclusions</p> <p>The results of this study suggest that an insufficient iron status is not the reason for low plasma carnitine concentrations observed in pregnant women. It is rather indicated that low plasma carnitine concentrations are caused by a low availability of precursors for carnitine synthesis during gestation.</p
Maximal-intensity exercise does not fully restore muscle pyruvate dehydrogenase complex activation after 3 days of high-fat dietary intake
Background & aims: Exercise activates muscle pyruvate dehydrogenase complex (PDC), but moderate intensity exercise fails to fully activate muscle PDC after high-fat diet [1]. We investigated whether maximal intensity exercise overcomes this inhibition.
Methods: Quadriceps femoris muscle biopsy samples were obtained from healthy males at rest, and after 46 and 92 electrically-evoked maximal intermittent isometric contractions, which were preceded by 3 days of either low- (18%) or high- (69%) isocaloric dietary fat intake (LFD and HFD, respectively).
Results: The ratio of PDCa (active form) to total PDCt (fully activated) at rest was 50% less after HFD (0.32 ± 0.01 vs 0.15 ± 0.01; P<0.05). This ratio increased to 0.77 ± 0.06 after 46 contractions (P<0.001) and to 0.98 ± 0.07 after 92 contractions (P<0.001) in LFD. The corresponding values after HFD were less (0.54 ± 0.06; P<0.01 and 0.70 ± 0.07; P<0.01, respectively). Resting muscle acetyl-CoA and acetylcarnitine content was greater after HFD than LFD (both P<0.05), but their rate of accumulation in the former was reduced during contraction. Muscle lactate content after 92 contractions was 30% greater after HFD (P<0.05). Muscle force generation during contraction was no different between interventions, but HFD lengthened muscle relaxation time (P<0.05). Daily urinary total carnitine excretion after HFD was 2.5-fold greater than after LFD (P<0.01).
Conclusions: A bout of maximal intense exercise did not overcome dietary fat-mediated inhibition of muscle pyruvate dehydrogenase complex activation, and was associated with greater muscle lactate accumulation, as a result of lower PDC flux, and increased muscle relaxation time
The management and survival outcomes of nasopharyngeal cancer in the Nordic countries
Peer reviewe
Early childhood adversities and trajectories of psychiatric problems in adoptees: Evidence for long lasting effects
The aim of the present study is to investigate whether early childhood adversities determine the longitudinal course of psychiatric problems from childhood to adulthood; in particular if the impact of early maltreatment on psychopathology decreases as time passes. A sample of 1,984 international adoptees was followed (955 males and 1029 females; adopted at the mean age of 29 months). Parents provided information about abuse, neglect and numbe
Advanced statistics and data analysis in laboratory medicine: Steep learning curve but substantial rewards
The use of rapid and cost-effective blood-based biomarkers in combination with tumour TNM stage for individual head and neck cancer patient treatment selection
Relations of motherâs sense of coherence and childrearing style with childâs social skills in preschoolers
PDC activity and acetyl group accumulation in skeletal muscle during isometric contraction
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