Lippincott's Biochem 2nd edition
Harrison's Internal Medicine
Robbins Pathologic Basis of Disease
Poor, G. Saturnine Gout. Baillieres Clin Rheumatol. 1989 Apr;3(1):51-61. I just used the abstract to figure out what made Pb-induced gout different.
Choi, Hyon. Pathogenesis of Gout. Ann Intern Med. 2005;143:499-516.
Golan's Principles of Pharmacology