This Article  • Full text  • PDF  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Citation map  • Citing articles on HighWire  • Citing articles on Web of Science (50)  • Contact me when this article is cited  Related Content  • Similar articles in JAMA  Topic Collections  • Violence and Human Rights  • Bioterrorism  • Diagnosis  • Alert me on articles by topic  Social Bookmarking   What's this?

A Comprehensive Review

Jennifer Audi, MD; Martin Belson, MD; Manish Patel, MD, MSc; Joshua Schier, MD; John Osterloh, MD, MS

JAMA. 2005;294:2342-2351.

Context  The recent discoveries of ricin, a deadly biologic toxin, at a South Carolina postal facility, a White House mail facility, and a US senator’s office has raised concerns among public health officials, physicians, and citizens. Ricin is one of the most potent and lethal substances known, particularly when inhaled. The ease with which the native plant (Ricinus communis) can be obtained and the toxin extracted makes ricin an attractive weapon.

Objectives  To summarize the literature on ricin poisoning and provide recommendations based on our best professional judgment for clinicians and public health officials that are faced with deliberate release of ricin into the environment.

Literature Acquisition  Using PubMed, we searched MEDLINE and OLDMEDLINE databases (January 1950-August 2005). The Chemical and Biological Information Analysis Center database was searched for historical and military literature related to ricin toxicity. Book chapters, unpublished reports, monographs, relevant news reports, and Web material were also reviewed to find nonindexed articles.

Results  Most literature on ricin poisoning involves castor bean ingestion and experimental animal research. Aerosol release of ricin into the environment or adulteration of food and beverages are pathways to exposure likely to be exploited. Symptoms after ingestion (onset within 12 hours) are nonspecific and may include nausea, vomiting, diarrhea, and abdominal pain and may progress to hypotension, liver failure, renal dysfunction, and death due to multiorgan failure or cardiovascular collapse. Inhalation (onset of symptoms is likely within 8 hours) of ricin is expected to produce cough, dyspnea, arthralgias, and fever and may progress to respiratory distress and death, with few other organ system manifestations. Biological analytic methods for detecting ricin exposure are undergoing investigation and may soon be available through reference laboratories. Testing of environmental samples is available through federal reference laboratories. Currently, no antidote, vaccine, or other specific effective therapy is available for ricin poisoning or prevention. Prompt treatment with supportive care is necessary to limit morbidity and mortality.

Conclusion  Health care workers and public health officials should consider ricin poisoning in patients with gastrointestinal or respiratory tract illness in the setting a credible threat. Poison control centers and public health authorities should be notified of any known illness associated with ricin exposure.

Author Affiliations: Centers for Disease Control and Prevention, National Center for Environmental Health, Division of Environmental Hazards and Health Effects, Health Studies Branch (Drs Audi, Belson, Patel, and Schier) and National Center for Environmental Health, Division of Laboratory Sciences (Dr Osterloh), Emory University, Department of Emergency Medicine and Georgia Poison Control Center, Section of Toxicology (Drs Audi, Belson, Patel, and Schier), Atlanta.
Dr Audi is now at the Nebraska Regional Poison Center and the Department of Surgery of the University of Nebraska Medical Center, Omaha.

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter     What's this?

THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES

A Monoclonal Immunoglobulin G Antibody Directed against an Immunodominant Linear Epitope on the Ricin A Chain Confers Systemic and Mucosal Immunity to Ricin
Neal et al.
Infect. Immun. 2010;78:552-561.
ABSTRACT | FULL TEXT  

A case of ricin poisoning following ingestion of Korean castor bean
Lim et al.
Emerg. Med. J. 2009;26:301-302.
ABSTRACT | FULL TEXT  

Lily Robinson and the Mount Vernon Affair: Recollections
Clin. Chem. 2009;55:844-844.
FULL TEXT  

Monitoring of laying capacity, immunoglobulin Y concentration, and antibody titer development in chickens immunized with ricin and botulinum toxins over a two-year period
Pauly et al.
Poult. Sci. 2009;88:281-290.
ABSTRACT | FULL TEXT  

Evidence for Widespread Epithelial Damage and Coincident Production of Monocyte Chemotactic Protein 1 in a Murine Model of Intestinal Ricin Intoxication
Yoder et al.
Infect. Immun. 2007;75:1745-1750.
ABSTRACT | FULL TEXT  

Fatal ricin toxicosis in a puppy confirmed by liquid chromatography/mass spectrometry when using ricinine as a marker
Mouser et al.
jvdi 2007;19:216-220.
ABSTRACT | FULL TEXT  

Ribosome Depurination Is Not Sufficient for Ricin-Mediated Cell Death in Saccharomyces cerevisiae
Li et al.
Infect. Immun. 2007;75:417-428.
ABSTRACT | FULL TEXT  

Immunoglobulin A Antibodies against Ricin A and B Subunits Protect Epithelial Cells from Ricin Intoxication
Mantis et al.
Infect. Immun. 2006;74:3455-3462.
ABSTRACT | FULL TEXT