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  • 2017-01-20 (xsd:date)
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  • Can a Chemical in Spicy Peppers Help Cure Breast Cancer? (en)
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  • On 13 December 2016, a team of researchers from Germany published a study that both hypothesized a mechanism by which capsaicin (the chemical in chili peppers responsible for their spiciness) could combat breast cancer cells, and also demonstrated its potential on a cell line representative of the most aggressive form of breast cancer. The researchers’ hypothesized mechanism (based on previous research on the chemical) was that capsaicin modulated a specific chemical pathway, called a transient receptor potential (TRP), known to induce cell apoptosis (in other words, death). Per the study: While there are a number of TRP channels known to exist in breast cancer cells, the researchers sought to identify — by analyzing RNA sequences in numerous breast cancer tissue samples — the one that was most common to breast cancer cells, but that also was uncommon in other cells: The researchers then tested the ability of capsaicin either to kill or inhibit the growth of a specific cell line representative of the most aggressive form of breast cancer: It is important to note, however, that the significance of this study’s finding wasn’t that capsaicin (and by extension spicy peppers) specifically fights breast cancer cells. It was that they identified and described a biological pathway for potential anti-cancer agents to exploit in breast cancer — chemicals that activate the TRPM1 channel: The use of capsaicin would come with a number of challenges. First, would be the problem of how you get it to the actual location of cancerous cells. The authors stated in a press release that an intake via food or inhalation [would be] insufficient for this purpose. So anyone trying to sell capsaicin pills or a whole batch of spicy peppers for anti-cancer purposes would be trying to pull a fast one. Related to that issue is the problem that capsaicin, at least when ingested, is removed from the body really quickly. In the breast cancer study, the cell lines were exposed to capsaicin for 48 hours. When ingested orally by humans, however, capsaicin likely remains in your bloodstream for less than 90 minutes, as reported in a 2012 study published in Pharmacological Reviews: According to the authors of the above review, intravenous injection of capsaicin is essentially too problematic to consider, as well: Another issue is that capsaicin (in the very high concentrations that would be necessary for it to be efficacious, at least) might also produce carcinogens that play a role in other forms of cancer, including colon cancer, gastric cancer, and skin cancer. As reported in a review of the therapeutic uses of capsaicin, these effects may come from byproducts formed from the metabolism of capsaicin: All told, the potential cancer fighting properties of capsaicin are not all that new, but the discovery of this specific pathway for a capsaicin-like chemical to exploit is an exciting (if extremely preliminary) step in the fight against this extremely common form of cancer. (en)
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