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Immune Response

  • Scientists Identify How Key Protein Keeps Chronic Infection in Check
    Why is the immune system able to fight off some viruses but not others, leading to chronic, life-threatening infections like HIV and hepatitis C? A new UCLA AIDS Institute study suggests the answer lies in a protein called interleukin-21 (IL-21), a powerful molecule ...More
    May 8, 2009 Posted in News
  • Does Flu Virus Kill by Causing a 'Cytokine Storm'?
    The H1N1 flu outbreak that began in Mexico and continues to spread around the globe may be particularly dangerous for young, otherwise healthy adults because it contains genetic components of the H5N1 avian influenza virus, which can induce a "cytokine storm," in which a ...More
    May 5, 2009 Posted in News
  • Novel Antibody Prevents Hepatitis C Virus Infection
    Taking aim at a leading cause of liver failure in the United States, a team of scientists at the Massachusetts Biologic Laboratories (MBL) of the University of Massachusetts Medical School (UMMS) has developed a human monoclonal antibody that neutralizes the hepatitis C ...More
    May 5, 2009 Posted in News
  • New Study Overturns Orthodoxy on How Macrophages Kill Bacteria
    For decades, microbiologists assumed that macrophages, immune cells that can engulf and poison bacteria and other pathogens, killed microbes by damaging their DNA. A new study from the University of Illinois disproves that.The study, published in the journal PLoS One, shows ...More
    May 4, 2009 Posted in News
  • Researchers Design Method to Induce Immunity to Certain STDs
    Chlamydia trachomatis is the most common bacterial agent of sexually transmitted disease, accounting for more than a million reported infections in the United States each year. Researchers at the California NanoSystems Institute (CNSI) at UCLA and the David Geffen School of ...More
    April 30, 2009 Posted in News
  • Older Men More Likely Than Women to Die After Pneumonia
    Differing biological response to infection between men and women may explain higher death rates among older men who are hospitalized with community-acquired pneumonia (CAP). The findings, published online in the Critical Care Medicine journal, may have important ...More
    April 29, 2009 Posted in News
  • Why Anti-HIV Antibodies are Ineffective at Blocking Infection
    Some 25 years after the AIDS epidemic spawned a worldwide search for an effective vaccine against the human immunodeficiency virus (HIV), progress in the field seems to have effectively become stalled. The reason? According to new findings from a team of researchers from ...More
    April 26, 2009 Posted in News
  • Updated Guidelines for HIV-Associated Opportunistic Infections Released
    The first complete update in five years of the U.S. guidelines for preventing and treating HIV-associated opportunistic infections has been released by the National Institutes of Health and the Centers for Disease Control and Prevention in cooperation with the HIV Medicine ...More
    April 16, 2009 Posted in News
  • New Evidence Explains Poor Infant Immune Response to Certain Vaccines
    For years, researchers and physicians have known that infants' immune systems do not respond well to certain vaccines, thus the need for additional boosters as children develop. Now, in a new study from the University of Missouri, one researcher has found an explanation for ...More
    April 1, 2009 Posted in News
  • Immune System's Role in Hepatitis C Recurrence After Liver Transplantation
    A new study pinpoints certain aspects of the immune system that may play a role in the recurrence and progression of hepatitis C virus (HCV) after liver transplantation. The study is in the April issue of the journal Liver Transplantation.HCV, which can lead to cirrhosis ...More
    April 1, 2009 Posted in News