VITAMIN D PROTECTS AGAINST COLON CANCER
September 23, 2011 by admin
Filed under Colon Cancer, Uncategorized, Vitamin D
Many of my colleagues dispute the benefits of nutrition in medicine. Some actually argue that the mega-doses that I often employ may even be harmful. However, the medical literature continually supports my therapies and teaches us that this isn’t so.
Citing just one example, researchers at the Vall d’Hebron Institute of Oncology (VHIO; Spain), in collaboration with the Alberto Sols Institute of Biomedical Research (CSIC-UAB; Spain), have confirmed the pivotal role of vitamin D, specifically its receptor (VDR), in slowing down the action of a key protein in the carcinogenic transformation process of colon cancer cells. This protein, known as beta-catenin, which is normally found in intestinal epithelial cells where it facilitates their cohesion, builds up in large quantities in other areas of the cells when the tumor transformation begins. As a result of these changes, the protein is retained in the cell nucleus, where it facilitate the carcinogenic process, and this is the point at which vitamin D intervenes, or rather, the vitamin D receptor (VDR). The researchers then analyzed the effect of the VDR on human colon cancer cell cultures and observed that the concentration of the altered protein, beta-catenin, increased in cells without the VDR. These findings were repeated in the three types of colon cancer cells studied, and confirmed the results observed in the mice. In two-thirds of advanced colon cancer tumors there was a lack of VDR in the cancer cells, suggesting that this loss may contribute to speeding up the growth of the tumor.
Click the link to learn more about optimal levels of vitamin D3 and best source.
Reference:
Maria Jesus Larriba, Paloma Ordonez-Moran, Irene Chicote, Genesis Martin-Fernandez, Isabel Puig, Alberto Munoz, Hector G. Palmer. “Vitamin D Receptor Deficiency Enhances Wnt/[beta]-Catenin Signaling and Tumor Burden in Colon Cancer .” PLoS One, 15 Aug 2011.
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