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Stasi & AIDS in Africa – an Unlikely Connection
Our contemporary time is haunted by fabricated stories or so called “fake news”. Some of them are threatening the long-term work to promote health carried out by bodies, such as the WHO. The origin of human immunodeficiency virus (HIV) being a contamination and a mutation originating from primates is well-documented. Despite this well documented fact, alternative narratives are often being heard o
Either Rap1 or Cdc13 can protect telomeric single-stranded 3' overhangs from degradation in vitro.
Telomeres, the DNA-protein structures capping the ends of linear chromosomes, are important for regulating replicative senescence and maintaining genome stability. Telomeres consist of G-rich repetitive sequences that end in a G-rich single-stranded (ss) 3′ overhang, which is vital for telomere function. It is largely unknown how the 3′ overhang is protected against exonucleases. In budding yeast,
Discovery of a chemical probe for PRDM9
PRDM9 is a PR domain containing protein which trimethylates histone 3 on lysine 4 and 36. Its normal expression is restricted to germ cells and attenuation of its activity results in altered meiotic gene transcription, impairment of double-stranded breaks and pairing between homologous chromosomes. There is growing evidence for a role of aberrant expression of PRDM9 in oncogenesis and genome insta
Immune functions of platelets
Platelets are megakaryocyte-derived cellular fragments lacking a nucleus and are classically known for their crucial role in supporting hemostasis. Besides their hemostatic function, it is becoming increasingly clear that platelets are much more diverse and that they are capable of a wide range of immune-sensing functions. This chapter will focus on these non-hemostatic immunological aspects, espe
The genetic evolution of melanoma
Melanoma tumors are driven by a hyperactivated mitogen-activated protein kinase (MAPK) signalling pathway, and therefore can generally be classified by mutations within the B-Raf proto-oncogene (BRAF), RAS family of proto-oncogenes, neurofibromin 1 (NF1), or other genes. At the transcriptional level, several genetic classifications of melanoma have converged on the distinction between melanogenesi
The implementation of Directive 2014/24/EU in Sweden : A sanguine approach
How do we handle it in Denmark: Implementation of codes for DRG and HP - First experiences in Denmark.
La0.75Sr0.25Cr0.5Mn0.5O3-δ-Ce0.8Sm0.2O1.9 as composite electrodes in symmetric solid electrolyte cells for electrochemical removal of nitric oxide
Symmetric solid electrolyte cells with La0.75Sr0.25Cr0.5Mn0.5O3-δ (LSCM)-Ce0.8Sm0.2O1.9 (SDC) composite electrodes are employed for nitric oxide (NO) removal. The LSCM powders are synthesized and the cells with LSCM-SDC composite electrodes are fabricated successfully. The results show that moderate SDC addition in LSCM electrode improves the cell performance due to the expansion of three phase bo
Transport dynamics of droplet impact on the wedge-patterned biphilic surface
Droplet impact on biphilic surfaces with a wettability contrast has been intensively studied in recent years. In this work the effects of tilting and apex angles on droplet transport dynamics after impacting on a wedge-patterned biphilic surface at low Weber numbers were investigated experimentally. The biphilic surface was fabricated by applying a hydrophobic polymer coating on a bare silicon sur
The molecular landscape of ETMR at diagnosis and relapse
Embryonal tumours with multilayered rosettes (ETMRs) are aggressive paediatric embryonal brain tumours with a universally poor prognosis1. Here we collected 193 primary ETMRs and 23 matched relapse samples to investigate the genomic landscape of this distinct tumour type. We found that patients with tumours in which the proposed driver C19MC2–4 was not amplified frequently had germline mutations i
Non-ambulatory children and young people with cerebral palsy; different exercise effects from static versus dynamic standing
Non-ambulatory children with cerebral palsy; effects on passive range of motion and spasticity in the hip after four month of static compared to dynamic standing exercise
Refining the role of phenology in regulating gross ecosystem productivity across European peatlands
The role of plant phenology as a regulator for gross ecosystem productivity (GEP) in peatlands is empirically not well constrained. This is because proxies to track vegetation development with daily coverage at the ecosystem scale have only recently become available and the lack of such data has hampered the disentangling of biotic and abiotic effects. This study aimed at unraveling the mechanisms
Impact of the III-V/Ge nucleation routine on the performance of high efficiency multijunction solar cells
This paper addresses the influence of III-V nucleation routines on Ge substrates for the growth of high efficiency multijunction solar cells. Three exemplary nucleation routines with differences in thickness and temperature were evaluated. The resulting open circuit voltage of triple-junction solar cells with these designs is significantly affected (up to 50 mV for the best optimization routine),
Lipid oxidation inhibition capacity of plant extracts and powders in a processed meat model system
A meat model system was used for screening lipid oxidation inhibiting capacity of diverse horticultural plant materials. In the model, heme-containing sarcoplasmic proteins from the meat water-phase were homogenized with linoleic acid and thiobarbituric reactive substances (TBARS) were measured. 23 Plant materials were investigated at three high (50, 100, and 200 ppm) concentrations and five plant
Quantifying the effects of species traits on predation risk in nature : A comparative study of butterfly wing damage
Evading predators is a fundamental aspect of the ecology and evolution of all prey animals. In studying the influence of prey traits on predation risk, previous researchers have shown that crypsis reduces attack rates on resting prey, predation risk increases with increased prey activity, and rapid locomotion reduces attack rates and increases chances of surviving predator attacks. However, eviden
Developing chlorine-based antiseptic by electrolysis
The use of Alcohol-based antiseptics is efficient and approved, however it has some limitations. This paper examined the possibility of using hypochlorite water as a chlorine-based antiseptic for handwashing in public buildings and healthcare facilities. The electrolysis method was used, which produces Hypochlorous acid (HOCl) from mixing drinking water with small amounts of sodium hydroxide. Hypo
Quantitative imaging of potassium release from single burning pulverized biomass char particles
The release of potassium from single burning pulverized wheat straw char particles was quantitatively measured using laser-induced photofragmentation fluorescence (LIPF). The char particles were prepared in a drop tube furnace at 1000 °C from wheat straw particles with sizes in the range 224–250 µm. Subsequently, the char particles were injected upward into a hot flue gas flow produced by a premix
Can we extend the indication for sentinel node biopsy in vulvar cancer? A nationwide feasibility study from Sweden
Background: In squamous cell vulvar cancer, sentinel node biopsy is accepted as standard treatment in well-defined patient groups and has reduced surgical morbidity considerably. Currently, due to the lack of evidence, it cannot be offered to patients with tumors of 4 cm diameter or greater or with multifocal tumors, or in local recurrences. Primary objective: This study is primarily a pilot and f
