Atomistic insights into the effects of electromagnetic fields on an amyloidogenic peptide

In this thesis computational modelling was used to investigate on the atomistic scale, the effects of external electric and electromagnetic fields (EMF) on protein behaviour and responses in an aqueous environment. The motivation behind this study is discussed in Chapter 1, along with a literature review on previous research on the effects of EMF on proteins, from both simulation based studies and experimental research. Non-Equilibrium Molecular Dynamics was employed to simulate the protein response to external perturbations and the computational methodologies encompassing this technique are described in Chapter 2. The history of NEMD is also described in this chapter, along with the specific computational details for the simulation of our peptide model, apoC-II(60-70) exposed to EMFs of static/oscillating nature and different frequency and strength. In Chapter we used all-atom NEMD simulations to understand and quantify the response mechanisms of the amyloidogenic apoC-II (60-70) peptides to non-ionising radiation by modelling their behaviour under static electromagnetic and electric fields ofdifferent strengths. Chapter 4 expands on the previous study by investigating the role of the field frequency on the peptide behaviour in solution. Finally, Chapter 5 presents a summary of the conclusions drawn from this work

Cyanobacterial growth and cyanophycin production with urea and ammonium as nitrogen source

publishedVersio

The 5T mouse multiple myeloma model: absence of c-myc oncogene rearrangement in early transplant generations.

Consistent chromosomal translocations involving the c-myc cellular oncogene and one of the three immunoglobin loci are typical for human Burkitt's lymphoma, induced mouse plasmacytoma (MPC) and spontaneously arising rat immunocytoma (RIC). Another plasma cell malignancy, multiple myeloma (MM), arising spontaneously in the ageing C57BL/KaLwRij mice, was investigated in order to see whether the MM cells contain c-myc abnormalities of the MPC or RIC type. Rearrangement of the c-myc oncogene was found in the bone marrow cells only in 5T2 MM transplantation line in a mouse of the 24th generation and in none of the seven other MM of the 5T series which were of earlier generations. Since the mouse 5T MM resembles the human MM very closely, including the absence of consistent structural c-myc oncogene abnormalities, it can serve as a useful experimental model for studies on the aetiopathogenesis of this disease

Médecine d’urgence [Emergency medicine : update 2019]

At a time when « Smarter medicine » and « Choosing Wisely » campains become increasingly important, emergency medicine is no exception. Many recent studies lead us to reconsider our practices and to change our work-up and treatement strategies, to ultimately use only the ones with a real clinical benefit for emergency departement patients

Bioelectromagnetics research within an Australian context: the Australian centre for electromagnetic bioeffects research (ACEBR)

Mobile phone subscriptions continue to increase across the world, with the electromagnetic fields (EMF) emitted by these devices, as well as by related technologies such as Wi-Fi and smart meters, now ubiquitous. This increase in use and consequent exposure to mobile communication (MC)-related EMF has led to concern about possible health effects that could arise from this exposure. Although much research has been conducted since the introduction of these technologies, uncertainty about the impact on health remains. The Australian Centre for Electromagnetic Bioeffects Research (ACEBR) is a National Health and Medical Research Council Centre of Research Excellence that is undertaking research addressing the most important aspects of the MC-EMF health debate, with a strong focus on mechanisms, neurodegenerative diseases, cancer, and exposure dosimetry. This research takes as its starting point the current scientific status quo, but also addresses the adequacy of the evidence for the status quo. Risk communication research complements the above, and aims to ensure that whatever is found, it is communicated effectively and appropriately. This paper provides a summary of this ACEBR research (both completed and ongoing), and discusses the rationale for conducting it in light of the prevailing science.Sarah P. Loughran ... Jim Manavis ... Robert Vink ... et al

The discovery of endogenous retroviruses

When endogenous retroviruses (ERV) were discovered in the late 1960s, the Mendelian inheritance of retroviral genomes by their hosts was an entirely new concept. Indeed Howard M Temin's DNA provirus hypothesis enunciated in 1964 was not generally accepted, and reverse transcriptase was yet to be discovered. Nonetheless, the evidence that we accrued in the pre-molecular era has stood the test of time, and our hypothesis on ERV, which one reviewer described as 'impossible', proved to be correct. Here I recount some of the key observations in birds and mammals that led to the discovery of ERV, and comment on their evolution, cross-species dispersion, and what remains to be elucidated

A Multilab Replication of the Ego Depletion Effect

There is an active debate regarding whether the ego depletion effect is real. A recent preregistered experiment with the Stroop task as the depleting task and the antisaccade task as the outcome task found a medium-level effect size. In the current research, we conducted a preregistered multilab replication of that experiment. Data from 12 labs across the globe (N = 1,775) revealed a small and significant ego depletion effect, d = 0.10. After excluding participants who might have responded randomly during the outcome task, the effect size increased to d = 0.16. By adding an informative, unbiased data point to the literature, our findings contribute to clarifying the existence, size, and generality of ego depletion

Nausées et vomissements chez la femme enceinte [Nausea and vomiting in pregnancy]

Nausea and vomiting in early pregnancy is a common condition at risk to be minimized by women or care providers. If not treated in the early stages, it can evolve to a severe condition with a morbidity risk for the mother and/or the fetus, and expose to public health consequences. Severe forms of nausea and vomiting and hyperemesis gravidarum are a clinical diagnosis with nonspecific manifestations in addition to biologic and metabolic consequences for mother and/or child. Safe and effective treatments can prevent severe consequences if used in an early stage of symptoms