For radiopharmaceutical applications, the type of emission of a radioisotope is
important. For treatment, radioisotopes that emit particles such as betas, alphas, and
Aüger electrons can be used. These emitted particles can cause multiple single-strand or
double-strand breaks within the helices of DNA, thus preventing cell replication. Both
Au-198 and Au-199 are beta and gamma emitters. The gammas emitted allow for
detection of the radioactive gold in vivo. Incorporating a high enough dose will provide
enough activity to destroy tumors.Current radiotherapy involving Au-198 includes using Au-198 colloid in treating carcinoma of the prostate , cervix uteri, and liver. Gold-198 seeds or wires are also used in interstitial implantation in tumors. Gold-198 colloid is also used for imaging the liver. Health insurers approve of brachytherapy (also known as nterstitial radiation, intracavitary radiation, internal radiation therapy) for the treatment of cancer. In this thesis, Au(III) bis-thiosemicarbazones (Chapter 2) and AuNPs (Chapters 3 and 4) are studied. Each Au compound was synthesized and evaluated for
radiopharmaceutical applications.
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