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Over time, some prostate cancers become resistant to these treatments and begin to expand again. As with many cancers that show these behaviors, finding exactly what makes them resistant can be tricky.
A culprit may be bacteria that live in the gut. Researchers found that in castrated mice and in people Link Slot Gacor having androgen deprivation therapy, some of these gut bacteria start producing androgens that are easily taken into the bloodstream. According to these new findings,published in the journal Science, the androgens seem to support the growth of prostate cancer and its resistance to treatment.
This study is the first to show that bacteria can produce testosterone, although the investigators are not yet sure what triggers them to start doing that. Androgen deprivation treatment may also lead to more of these hormone-producing microbes in the gut, the results suggest. Fecal bacterial of people with treatment-resistant prostate cancer also showed a link to lower life expectancy.
But the converse also was true: Fecal transplants from mice or humans with hormone-susceptible Situs Slot Terbaru cancer contributed to limiting tumor growth.
The findings may suggest new therapeutic targets: the microbes living in the gut. In mouse studies, the researchers found that when they wiped out these bacteria, the cancer was much slower to progress to treatment resistance. Authors of a commentary accompanying the study say there are other places to look for bacteria that might be making these hormones, too, including the urinary tract or even in the tumor itself.
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