Patients with sickle cell disease have mutant haemoglobin proteins that form deadly long, stiff fibres inside red blood cells. A research team led by University of Warwick researcher Dr Matthew Turner, propose a mathematical model in the 28 March online issue of PRL to explain the persistent stability of these deadly fibres. The theory suggests that an inherent "twistiness" in the strands that make up the fibres could be the key to their durability and possibly to new treatments.
Red blood cells supply oxygen to the body using their cargo of haemoglobin, a protein that can capture and release oxygen. Haemoglobin molecules normally float freely in the cell, but sickle cell patients have a mutated, "sticky," form of haemoglobin that tends to clump together into long fibres. The stiff fibres form a scaffolding that distorts the cells into their namesake "sickle" shape, so they jam up trying to pass through small blood vessels. The traffic jams deprive vital organs of oxygen, so patients end up with anaemia, jaundice, major organ damage, and many other maladies.
A sickle haemoglobin fibre can be made up of anywhere from 14 to more than 400 individual strands of haemoglobin molecules linked into long chains. Matthew Turner, of the University of Warwick in the UK, wondered why these strands tend to clump together into long, stiff, fibres rather than compact crystals, which would be less harmful. "A scaffolding made of the rigid fibres is much worse than a couple little sugar-cube-like crystals floating around," Turner says. So he and his colleagues constructed a mathematical model.
Peter Dunn | alfa
Spread of deadly eye cancer halted in cells and animals
13.11.2018 | Johns Hopkins Medicine
Breakthrough in understanding how deadly pneumococcus avoids immune defenses
13.11.2018 | University of Liverpool
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
Physicists at ETH Zurich demonstrate how errors that occur during the manipulation of quantum system can be monitored and corrected on the fly
The field of quantum computation has seen tremendous progress in recent years. Bit by bit, quantum devices start to challenge conventional computers, at least...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
13.11.2018 | Life Sciences
13.11.2018 | Life Sciences
13.11.2018 | Awards Funding