A new type of stem cell-seeded patch has shown promising results in promoting healing after a heart attack, according to a study released today in the journal STEM CELLS Translational Medicine. Durham, NC (PRWEB) March 07, 2012 Ischemic heart disease, caused by vessel blockage, is a leading cause of death in many western countries. Studies have shown the potential of stem cells in regenerating heart tissue damaged during an attack. But even as the list of candidate cells for cardiac regeneration has expanded, none has emerged as the obvious choice, possibly because several cell types are needed to regenerate both the hearts muscles and its vascular components. Aside from the choice of the right cell source for tissue regeneration, the best way to deliver the stem cells is up for debate, too, as intravenous delivery and injections can be inefficient and possibly harmful. While embryonic stem cells have shown great promise for heart repairs due to their ability to differentiate into virtually any cell type, less than 10 percent of injected cells typically survive the engraftment and of that number generally only 2 percent actually colonize the heart. In order for this type of treatment is to be clinically effective, … Continue reading →

WEDNESDAY, March 7 (HealthDay News) -- The genetic makeup of cancer cells differs significantly from region to region within a single tumor, according to new research that raises questions about the true potential of personalized cancer medicine. With this treatment approach, doctors study a tumor's genetic makeup to determine which drugs would work best in a particular patient. But if the genetic mutations driving the cancer cells vary widely, a single tissue sample won't necessarily give the full picture. This "targeted therapy" involves "sticking a needle into the primary tumor site and taking a small sliver of a tumor, doing a gene analysis, and creating a genetic profile of the tumor to predict how the tumor will behave," explained Dr. Dan Longo, an oncologist and deputy editor at the New England Journal of Medicine. "What this paper tells us is that is an oversimplification of the complexity of tumors and their heterogeneity," he said. "If you look at different sites of the very same tumor and the very same person, one site might tell you a gene profile associated with a good prognosis and the other site will tell you a gene profile associated with a bad prognosis." Longo wrote … Continue reading →

WEDNESDAY, March 7 (HealthDay News) -- The genetic makeup of cancer cells differs significantly from region to region within a single tumor, according to new research that raises questions about the true potential of personalized cancer medicine. With this treatment approach, doctors study a tumor's genetic makeup to determine which drugs would work best in a particular patient. But if the genetic mutations driving the cancer cells vary widely, a single tissue sample won't necessarily give the full picture. This "targeted therapy" involves "sticking a needle into the primary tumor site and taking a small sliver of a tumor, doing a gene analysis, and creating a genetic profile of the tumor to predict how the tumor will behave," explained Dr. Dan Longo, an oncologist and deputy editor at the New England Journal of Medicine. "What this paper tells us is that is an oversimplification of the complexity of tumors and their heterogeneity," he said. "If you look at different sites of the very same tumor and the very same person, one site might tell you a gene profile associated with a good prognosis and the other site will tell you a gene profile associated with a bad prognosis." Longo wrote … Continue reading →

MIAMI--(BUSINESS WIRE)-- Stephen D. Nimer, M.D., one of the worlds premier leukemia and stem cell transplant researchers and clinicians, has been named the new director of the Sylvester Comprehensive Cancer Center. Nimer, the Alfred P. Sloan Chair in Cancer Research at Memorial Sloan-Kettering Cancer Center, will assume the key University of Miami Miller School of Medicine and UHealth-University of Miami Health System post this spring, bringing 30 years of pioneering research and clinical experience and an unquenchable passion for improving the lives of patients with cancer, and their families. The focus will not be solely on taking care of the cancer, it will be on taking care of the patient, said Nimer, whose patient-centered philosophy has won him as much acclaim as his clinical and laboratory accomplishments. That means trying to understand as fully as possible each patients cancer the biology driving the cancer, and the impact of the cancer on the patients life in order to develop a personalized therapeutic approach suited to each individual. Pascal J. Goldschmidt, M.D., Senior Vice President for Medical Affairs and Dean of the Miller School, and CEO of UHealth, said Nimer, who headed the Division of Hematologic Oncology at Sloan-Kettering for a dozen … Continue reading →