Health

New e-cigarettes affect users' airways

(Medical Xpress) -- E-cigarettes, or electronic cigarettes, are promoted as a safer alternative to smoking. However, a new study published in the journal Chest, shows that these e-cigarettes cause immediate changes in the ...

HIV & AIDS

Nanoparticles loaded with bee venom kill HIV

(Medical Xpress)—Nanoparticles carrying a toxin found in bee venom can destroy human immunodeficiency virus (HIV) while leaving surrounding cells unharmed, researchers at Washington University School of Medicine in St. ...

Health

Can nicotine protect the aging brain?

Everyone knows that tobacco products are bad for your health, and even the new e-cigarettes may have harmful toxins. However, according to research at Texas A&M, it turns out the nicotine itself—when given independently ...

Immunology

Allergy misconceptions: Why hay fever may be a good sign

(Medical Xpress) -- If you're one of the millions of people coughing, sneezing, sputtering, and cursing your body's hypersensitivity to ragweed, trees, and grass this spring, researchers at Yale have what could be considered ...

Medical research

Disarming the botulinum neurotoxin

Researchers at Sanford-Burnham Medical Research Institute (Sanford-Burnham) and the Medical School of Hannover in Germany recently discovered how the botulinum neurotoxin, a potential bioterrorism agent, survives the hostile ...

Diseases, Conditions, Syndromes

Why isn't there a vaccine for staph?

Staph bacteria, the leading cause of potentially dangerous skin infections, are most feared for the drug-resistant strains that have become a serious threat to public health. Attempts to develop a vaccine against methicillin-resistant ...

Diseases, Conditions, Syndromes

Botox may help ease 'burning mouth' syndrome

(HealthDay)—Botox, long used to smooth wrinkles, may come to the rescue for people with a painful condition called burning mouth syndrome.

Surgery

Over 17.7 million cosmetic procedures performed in U.S. in 2018

(HealthDay)—More than 17.7 million surgical and minimally invasive cosmetic procedures were performed in the United States in 2018, with an increasing trend seen in body-shaping procedures, according to a report published ...

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Toxin

A toxin (Greek: τοξικόν, toxikon) is a poisonous substance produced by living cells or organisms. (Although technically man is a living organism, man-made substances created by artificial processes usually aren't considered toxins by this definition.)

For a toxic substance not produced by living organisms, "toxicant" is the more appropriate term, and "toxics" is an acceptable plural.

Toxins can be small molecules, peptides, or proteins that are capable of causing disease on contact with or absorption by body tissues interacting with biological macromolecules such as enzymes or cellular receptors. Toxins vary greatly in their severity, ranging from usually minor and acute (as in a bee sting) to almost immediately deadly (as in botulinum toxin).

This text uses material from Wikipedia, licensed under CC BY-SA