There’s a new war raging in health care, with hundreds of millions of dollars at stake and thousands of lives in the balance. The battle, pitting drug companies against doctors and patient advocates, is being fought over the unlikeliest of substances: human excrement.
The clash is over the future of fecal microbiota transplants, or F.M.T., a revolutionary treatment that has proved remarkably effective in treating Clostridioides difficile, a debilitating bacterial infection that strikes 500,000 Americans a year and kills 30,000.
The therapy transfers fecal matter from healthy donors into the bowels of ailing patients, restoring the beneficial works of the community of gut microbes that have been decimated by antibiotics. Scientists see potential for using these organisms to treat diseasesfrom diabetes to cancer.
At the heart of the controversy is a question of classification: Are the fecal microbiota that cure C. diff a drug, or are they more akin to organs, tissues and blood products that are transferred from the healthy to treat the sick? The answer will determine how the Food and Drug Administration regulates the procedure, how much it costs and who gets to profit.
Ladybug Cow (aka Cowccinella Novemnotata), climbing the wall of the Talbott Hotel under direction of Toxoplasma Gondii…
Wild, just wild. Fascinating stuff, and we are just discovering exactly how powerful these microorganisms actually are…
An unassuming single-celled organism called Toxoplasma gondii is one of the most successful parasites on Earth, infecting an estimated 11 percent of Americans and perhaps half of all people worldwide. It’s just as prevalent in many other species of mammals and birds. In a recent study in Ohio, scientists found the parasite in three-quarters of the white-tailed deer they studied.
One reason for Toxoplasma’s success is its ability to manipulate its hosts. The parasite can influence their behavior, so much so that hosts can put themselves at risk of death. Scientists first discovered this strange mind control in the 1990s, but it’s been hard to figure out how they manage it. Now a new study suggests that Toxoplasma can turn its host’s genes on and off — and it’s possible other parasites use this strategy, too.
Toxoplasma manipulates its hosts to complete its life cycle. Although it can infect any mammal or bird, it can reproduce only inside of a cat. The parasites produce cysts that get passed out of the cat with its feces; once in the soil, the cysts infect new hosts.
Toxoplasma returns to cats via their prey. But a host like a rat has evolved to avoid cats as much as possible, taking evasive action from the very moment it smells feline odor.
Experiments on rats and mice have shown that Toxoplasma alters their response to cat smells. Many infected rodents lose their natural fear of the scent. Some even seem to be attracted to it.
Manipulating the behavior of a host is a fairly common strategy among parasites, but it’s hard to fathom how they manage it.
The medical establishment is about to issue a big Ooopsie to all the people who had their appendix removed; people who were assured by their doctor that it was no big deal to live without an appendix.
There is growing evidence for the role of the appendix in restoring a healthful balance of microbes in the body. Though long considered an expendable, vestigial organ, the appendix is now being looked at as “a storehouse of good bacteria,” Dr. Dunn said. In a study of recovery rates from Clostridium difficile, which causes a severe form of infectious diarrhea, often following antibiotic therapy, patients whose appendixes had been removed were more likely to have a recurrent infection than those who still had appendixes.