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Mechanism revealed for side effects of drug used in hematopoietic stem cell harvesting

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Mechanism of unfavorable results brought on by G-CSF. Credit score: Picture courtesy of Kobe College A group of Japanese researchers revealed the mechanism for negative effects similar to fever and bone ache brought on by G-CSF, which is extensively used for peripheral blood hematopoietic stem cell harvesting (PBSCH). This is a vital methodology for hematopoietic stem cell transplantation (HSCT) used to deal with hematological malignancies similar to leukemia. G-CSF is important for remedy of hematological malignancies and different varieties of cancers, however the mechanism for its unfavorable negative effects has not been elucidated till now. The findings from this analysis revealed not solely the mechanism of the unfavorable results of G-CSF, but in addition a brand new operate of neutrophils, a sort of blood cell which was beforehand acknowledged simply as a shopper of invadi...

Enough is enough: Stem cell factor Nanog knows when to slow down

Every stem cell researcher knows the protein Nanog because it ensures that these all-rounders continue to renew. A controversial debate revolved around how the quantity of Nanog protein in the cell is regulated. "So far it was often assumed that Nanog activates itself in order to preserve the pluripotency in embryonic stem cells," explains Dr. Carsten Marr. He heads the Quantitative Single Cell Dynamics research group at the Institute of Computational Biology (ICB) of the Helmholtz Zentrum München. Together with colleagues from ETH Zürich, he and his team have developed an algorithm called STILT (Stochastic Inference on Lineage Trees) that now rebuts this assumption. Using STILT, the scientists evaluated time -resolved protein expression data (already collected in 2015) from individual cells in which Nanog could be detected through fusion with a fluorescence protein. "We compared the Nanog dynamics that were measured in this way with three different models. One of t...

Preventative antibiotics could prevent Clostridium difficile infection among stem cell transplant patients

The researchers will present their findings at this week's 58th Annual American Society of Hematology Meeting and Exposition in San Diego. Clostridium difficile infection, more commonly known as C. diff, causes diarrhea and can lead to severe inflammation of the bowel. These infections can be not only extremely uncomfortable, but can lead to other severe medical complications. Even with a course of antibiotics, the infection can lead to longer hospital stays and increased treatment cost. A study published last year in the American Journal of Gastroenterology found the average cost of C. diff ranges from $8,911 to $30,049 per patient. Oral vancomycin is a standard antibiotic used to treat C. diff, and researchers at the Abramson Cancer Center began giving it to patients on a preventative basis -- twice daily from the day of admission to the day of discharge. Their study focused on patients with blood cancers undergoing an allogeneic stem cell transplant -- in which patients r...

Stem cells police themselves to reduce scarring

The researchers are hopeful that their findings could one day be used to help keep muscles supple during normal aging and to treat people with diseases like muscular dystrophy. "Fibrosis occurs in many degenerative diseases and also in normal aging," said Thomas Rando, MD, PhD, a professor of neurology and neurological sciences. "It negatively impacts muscle regeneration by altering the stem cell niche and inhibiting the stem cell function. In addition, as more scarring occurs, muscles become stiff and can't contract and relax smoothly." Rando, who is the director of Stanford's Glenn Center for the Biology of Aging, is the senior author of the study, which will be published online Nov. 28 in  Nature . Former graduate student Alisa Mueller, MD, PhD, is the lead author. Self-policing stem cells The researchers discovered that stem cells embedded in muscle fibers do some fancy gene-expression footwork in order to respond appropriately to injury, dis...