GMO Research
Text: Yu and Rohan (1) are to be commended for their comprehensive literature review of the mitogenic and apoptotic actions of insulin-like growth factor (IGF)-I and of the epidemiologic evidence incriminating elevated levels of circulating IGF with excess risks of breast, colorectal, prostate, and other cancers. This evidence is supported by the excess risks of …
Abstract: Levels of insulin-like growth factor-1 (IGF-1) are substantially elevated and more bioactive in the milk of cows hyperstimulated with the biosynthetic bovine growth hormones rBGH, and are further increased by pasteurization. IGF-1 is absorbed from the gastrointestinal tract, as evidenced by marked growth-promoting effects even in short-term tests in mature rats, and absorption is …
Keywords: recombinant bovine growth hormone, rBGH, recombinant bovine somatotropin, rBST Citation: Kronfeld, D.S., 2001. Concerned about use of BST in dairy cattle. Journal of the American Veterinary Medical Association, 219(5), pp. 591-2.
Text: In November 1998, an expert panel appointed by the Canadian VMA (CVMA) at the request of Health Canada, but working independently, found “a number of legitimate animal welfare concerns associated with the use of rBST” (recombinant bovine somatotropin). These included an increased risk of clinical mastitis and lameness, and a reduction in the lifespan …
Abstract: Contrary to assertions in the editorial and Special Communication, administration of bST does significantly change milk composition, mainly reflecting tissue utilization to make extra milk, such as an increase in long-chain fatty acids. One importantexception is the increase in insulinlike growth factor I (IGF-I) to levels found usually in the first 2 weeks of …
Keywords: recombinant bovine growth hormone, rBGH, recombinant bovine somatotropin, rBST Citation: Kronfeld, D.S., 1993. Concerns about bovine somatotropin. Journal of the American Veterinary Medical Association, 203(2), p.190.
Keywords: recombinant bovine growth hormone, rBGH, recombinant bovine somatotropin, rBST Citation: Kronfeld, D.S., 1989. BST milk safety. Journal of the American Veterinary Medical Association, 195(3), pp. 288-9.
Keywords: recombinant bovine growth hormone, rBGH, recombinant bovine somatotropin, rBST Citation: Kronfeld, D.S., 1988. Biologic and economic risks associated with use of bovine somatotropins. Journal of the American Veterinary Medical Association, 192(12), p.1693.
