Author Archives: karen
How fast do proteins break apart with light?
Proteins are microscopic machines that perform diverse functions in nature from transporting materials, to carrying out chemical reactions in the cell, to transmitting signals throughout the body. To do these tasks, the long protein chains must wrap
Polyamine transport increases drug resistance in the parasite Trypanosoma cruzi
The parasite Trypanosoma cruzi is the causative agent of Chagas disease, an illness affecting millions of people in America. The only drugs approved against Chagas disease are nifurtimox and benznidazole, which were discovered almost half a century
Cochlear implantation in children with auditory neuropathy
Hearing loss is one of the most common disorder that can affect newborns, with a rate of one affected child on every 1000 births. A normal speech development is desired for these patients and can be reached
FDG-PET/CT is accurate in diagnosing breast cancer recurrence
A woman with a substantial risk of breast cancer recurrence experiences worry and anxiety, and a correct diagnosis is relevant in order to make well-founded decision on treatment strategy. It is then crucial to provide accurate diagnostic
Design of supplements and nutraceuticals enriched in resveratrol: a promising natural compound
Resveratrol is a polyphenol compound found in grapes, red wine, berry fruits and nuts. Given the favorable prophylactic and therapeutic effects of resveratrol, nanocarriers have been developed for enhancing its bioavailability for further application as supplements or
Effects of hypoxia/reoxygenation in the antioxidant system of crabs
Variations in the concentration of dissolved oxygen in water naturally induce hypoxia/reoxygenation cycles in various regions of aquatic environments of freshwater (rivers and lakes) and marine (coastal areas). However, in recent decades, human activities that discharge domestic
Light-controlled muscle-powered walking biological robots
For centuries, engineers have built with traditional materials, such as woods or metals, which can’t dynamically respond to changes in their environment. Intuitively, we know that biological materials can do things synthetic materials cannot. For example, our
Building nanocomposite materials for sensing applications
Construction of nanoscale devices is a crucial step toward the application of nanotechnology in a variety of fields. Although construction by addition of individual building blocks might appear impossible without using nanomachines, it can actually be carried
Clues for innovative therapies targeting the c-ring of the F1FO-ATP synthase
Increasing evidence points out that the ATP synthase/hydrolase, also known as F1FO-complex, can be the key enzymatic switch between cell life and death. So, the enzyme complex, which bears the task of building most cellular ATP, the
Deer show a gender difference in the neural regulation of appetite by the brain
Brain chemicals , called neuropeptides , regulate seasonal changes in reproductive function and appetite. We took brains from red deer males and females at two contrasting seasons of the year and examined specific regions of the hypothalamus
Focal salvage for radiorecurrent prostate cancer
Patients primarily treated with radiotherapy for prostate cancer can get a recurrence. The tumour then regrows. Often this is a localised process and the tumour has not spread to other parts of the body. Therefore, these patients
Introducing legume-based ingredients in the niche food market
Legumes are widely promoted for their health benefits, as they are packed with protein, fibre and rich in vitamins and minerals. At the recommended amount, consumption of legumes lowers the risk of developing heart disease, cancers and
22q11.2 deletion syndrome diagnosed in a young patient presenting with Parkinson disease
Chromosome 22q11.2 deletion syndrome (22q11.2DS), also called DiGeorge syndrome, is a fairly common genetic syndrome. In most cases, the diagnosis is made at birth or early in childhood as the most common features of the syndrome –
A “selfish ribosome” as the origin of cellular life
Could there have been a form of “life” that integrated genetic information, protein translation, and the molecular machinery necessary to replicate itself before the first cells? Might such an entity still exist within our cells as a
Development of thermoelectric gas sensor for breath analysis: How can we improve the gas selectivity?
Breath gas contains a range of marker gases that can be associated with disease and metabolism. For instance, the monitoring of breath H2 is useful for measurement of orocecal transit time, colonic fermentation, abnormal fermentation and irritable
How does exercise reduce the intake and preference for high fat, high sugar foods?
People gain weight because they eat too much food, particularly food with a lot of fats and sugars, and do not use the calories gained from food. In this case the energy intake is higher than energy
Chemistry of wonderful wet laundering
We use two types of laundries. One is dry-cleaning which is carried out using an organic solvent, and another is wet laundering is carried out using water and soap (surfactant). These observations are scientifically applied for the
Acyl-CoA-binding proteins help plants “degrease” adversities
Serving as the building blocks for triacylglycerides and membrane phospholipids, fatty acids are essential in all forms of life. Given their chemical inertness, fatty acids need activation into a more water-soluble form (as acyl-CoA esters), prior to
Long-term outcomes of robotic pyeloplasty for ureteropelvic junction obstruction
Ureteropelvic junction obstruction occurs in both adults and children when the ureter (the tube that carries urine from the kidney to the bladder) becomes blocked, preventing the flow of urine out of the kidney. Surgery is often
The search for new drug candidates to treat Chagas disease
Chagas disease (CD) is a parasite-born pathology caused by a unicellular microorganism called Trypanosoma cruzi. This illness causes a significant morbidity and mortality in the developing world, being endemic in 21 countries across Latin America, representing also
