{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T17:01:29Z","timestamp":1761843689102},"reference-count":57,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2007,7,24]],"date-time":"2007-07-24T00:00:00Z","timestamp":1185235200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Magnetic Resonance in Med"],"published-print":{"date-parts":[[2007,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Choline\u2010containing compounds (CCCs) are elevated in breast cancer, and detected in vivo by the <jats:sup>1<\/jats:sup>H MRS total choline (tCho) resonance (3.25 ppm) and the <jats:sup>31<\/jats:sup>P MRS phosphomonoester (PME) resonance (3.8 ppm). Both the tCho and PME resonances decrease early after initiation of successful therapy. The single major component of these composite resonances, phosphocholine (PCho), also responds to therapy by decreasing. The ability to resolve and quantify PCho in vivo would thus increase the sensitivity of this biomarker for early detection of therapeutic response.Herein, the in vivo resolution and quantification of PCho is reported in human mouse xenograft tumors of the human breast cancer cell lines MCF\u20107 and MDA\u2010mb\u2010231. Significant decreases in tumor PCho are observed within 2 to 4 d posttreatment with the antimicrotubule drug, docetaxel. To determine whether these decreases are a general tumor response or an intracellular metabolic response, high\u2010resolution NMR spectroscopy was performed on extracts of cells treated with docetaxel. Significant decreases in intracellular PCho and increases in glycerophosphocholine (GPC) were observed. These decreases are coincident with other tumor and cellular responses such as tumor growth delay (TGD), cell\u2010cycle arrest, and modes of cell death such as mitotic catastrophe, necrosis, and apoptosis, with mitotic catastrophe predominating. Magn Reson Med 58:270\u2013280, 2007. \u00a9 2007 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/mrm.21333","type":"journal-article","created":{"date-parts":[[2007,7,24]],"date-time":"2007-07-24T21:48:26Z","timestamp":1185313706000},"page":"270-280","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":43,"title":["Response of choline metabolites to docetaxel therapy is quantified in vivo by localized <sup>31<\/sup>P MRS of human breast cancer xenografts and in vitro by high\u2010resolution <sup>31<\/sup>P NMR spectroscopy of cell extracts"],"prefix":"10.1002","volume":"58","author":[{"given":"David 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