Ricin (/ ˈraɪsɪn / RY-sin) is a lectin (a carbohydrate-binding protein) and a highly potent toxin produced in the seeds of the castor oil plant, Ricinus communis. The median lethal dose (LD 50) of ricin for mice is around 22 micrograms per kilogram of body weight via intraperitoneal injection. Oral exposure to ricin is far less toxic.

2025年1月18日 · When breathed in, ricin causes fever, chest tightness, cough and breathing problems. Ricin can cause a fluid buildup in the lungs, known as pulmonary edema. If ricin is eaten, it can cause vomiting and diarrhea. It can cause bleeding in the gut and organ damage. The poison can kill a person within three days. Even a small amount of ricin can kill.

2024年9月6日 · Ricin is a natural poison that can harm the body. Signs and symptoms of ricin poisoning depend on whether ricin was breathed in, swallowed, or injected. If you were exposed, get medical care. Ricin is a poison found naturally in castor beans. If castor beans are chewed and swallowed, the ricin that comes out can cause injury.

2022年12月6日 · Learn how ricin poisoning occurs, the signs and symptoms of poisoning, and what to do if you’re exposed. Ricin is a toxic protein naturally found in the seeds of the castor …

2004年2月4日 · Ricin is a type of poisoning and infectious disease, and it's not contagious (spread from person to person). Symptoms of ricin poisoning depend upon the amount of the toxin, and the method of exposure, but may include

2025年3月11日 · ricin, toxic protein (toxalbumin) occurring in the beanlike seeds of the castor-oil plant (Ricinus communis). Ricin, discovered in 1888 by German scientist Peter Hermann Stillmark, is one of the most toxic substances known. It is of special concern because of its potential use as a biological weapon.

2023年7月17日 · Ricin is a naturally occurring carbohydrate-binding protein produced in the seeds of ricinus communis, the plant that produces castor oil. It is toxic when inhaled, ingested, or injected. As few as five to ten micrograms per kilogram can be lethal.

Ricin poisoning can eventually lead to multiple organ failure, leading to death within 36-72 hours of exposure, depending on the dosage of ricin and mode of exposure. There is no antidote for ricin; hence, ricin poisoning is mainly treated symptomatically with supportive medical care to reduce the effects of poisoning.

Ricin toxin, a water-soluble glycoprotein that does not partition into the oil extract, is a ribosome-inactivating toxin composed of two chains, labeled A and B. Severity of the toxicity varies depending on the route of exposure to the toxin. Inhalational is …

Ricin intoxication is a fatal and uncommon medical condition and recently its use as a potential bioterrorism agent has also been reported. This study aims to identify the main characteristics of diagnosed ricin poisoning cases worldwide in order to raise awareness of this toxin among the population and clinicians.