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Latest Red blood cell Stories

2010-08-02 16:16:28

Genetic molecules resist chemical stress, may have wider roles Pediatric researchers have discovered a new biological pathway in which small segments of RNA, called microRNA, help protect red blood cells from injury caused by chemicals called free radicals. The microRNA seems to have only a modest role when red blood cells experience normal conditions, but steps into action when the cells are threatened by oxidant stress. Led by hematologist Mitchell Weiss, M.D., Ph.D., of The Children's...

2010-08-02 16:11:24

Researchers at UT Southwestern Medical Center have uncovered a key step in the creation of new red blood cells in an animal study. They found that a tiny fragment of ribonucleic acid (RNA), a chemical cousin of DNA, prompts stem cells to mature into red blood cells. The researchers also created an artificial RNA inhibitor to block this process. Such interventions, if fruitful in humans, might be useful against some cancers and other diseases, such as polycythemia vera, in which the body...

2010-07-12 13:53:49

A retired but well-preserved mechanism for regulating viruses that has worked its way into the human genome appears to modulate a switch between adult and fetal hemoglobin production, Medical College of Georgia researchers report. That switch could be the key to more targeted therapies for sickle cell patients whose misshaped adult hemoglobin hinders its ability to deliver oxygen throughout the body. Fetal hemoglobin, on the other hand, can't take on the dysfunctional sickle shape. After...

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2010-07-11 07:25:00

American scientists have developed "artificial blood" that could soon be used to treat soldiers who are wounded during battle. The artificial blood is created by taking cells from umbilical cords and using a machine to imitate the way bone marrow works to produce mass quantities of usable units of red blood cells. Producing the genetically-engineered blood is known as "Ëœblood pharming'. The program was launched in 2008 by the Pentagon's experimental sector, Darpa, to find a way...

2010-07-08 14:59:11

Genetic mechanism once thought rare may allow rapid cell production We take our blood for granted, but its creation requires a complicated series of steps, starting with the formation of blood stem cells during early embryonic development, followed by progressive differentiation into the progenitors of red cells, white cells and platelets, and ultimately the full set of blood cells. Now, in the July 9 issue of Cell, researchers at Children's Hospital Boston report a surprising twist in how...

2010-07-02 19:20:15

Cells from frozen human blood samples can be reprogrammed to an embryonic stem-cell-like state, according to Whitehead Institute researchers. These cells can be multiplied and used to study the genetic and molecular mechanisms of blood disorders and other diseases. Blood samples represent an easily accessible source of human cells for research and offer a host of practical advantages over the reliance on skin biopsies to attain cell samples. The breakthrough described here allows for study of...

2010-07-02 10:00:00

Residents with Polycythemia Vera in Bedford, Blair, Cambria and Somerset Counties Encouraged to Participate HARRISBURG, Pa., July 2 /PRNewswire-USNewswire/ -- The Pennsylvania Department of Health today announced a new, federally-funded study on the blood disorder Polycythemia vera, or PV, in Bedford, Blair, Cambria and Somerset counties. Residents of these counties who were diagnosed with PV between 2001 and 2008 are eligible to participate in the study and will be compensated. PV is...

2010-06-25 15:55:00

WINSTON-SALEM, N.C., June 25 /PRNewswire-USNewswire/ -- The National Heart, Lung, and Blood Institute (NHLBI) of the National Institutes of Health, announced June 21st that it will fund nine research grants to improve the safety of red blood cell transfusions. Wake Forest University Professor of Physics Daniel Kim-Shapiro and a collaborator at the University of Pittsburgh have been awarded a $2.8 million, four-year grant to study why the quality of stored blood degrades over time and to...

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2010-06-24 07:30:00

German scientists said Wednesday that legendary pharaoh Tutankhamun was probably killed by the genetic blood disorder sickle cell disease. The team questioned the conclusions of a major Egyptian study released in February on the enigmatic boy-king's early demise.  The researchers were from the Bernhard Nocht Institute for Tropical Medicine in the northern city of Hamburg. The scientists said he died of malaria after suffering a fall, putting to rest the theory that he was...

2010-06-18 13:52:08

Discovery of a key red cell molecule used by the malaria parasite gives renewed hope for an effective vaccine in the future, according to an international team of researchers. Plasmodium falciparum, a blood parasite that causes malaria by invading and multiplying in the red blood cells, kills 1 to 2 million people annually. "How the parasite invades red blood cells is not completely understood," said Jose A. Stoute, M.D., senior investigator and team leader, Department of Medicine, Division...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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