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Open Access Anomer-Equilibrated Streptozotocin Solution for the Induction of Experimental Diabetes in Mice (Mus musculus)

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Streptozotocin is widely used to induce diabetes in laboratory animals through multiple low-dose or single high-dose intraperitoneal injections. HPLC analysis has shown that the composition of the solution may change considerably during the first 2 h after dissolution due to equilibration of the 2 anomers (α and ) of streptozotocin. Because of the drug's alleged instability in solution, the typical recommendation is to administer streptozotocin within 10 min after dissolution. We compared the induction of diabetes in NOD/SCID mice by injection of a single high dose of freshly made or anomer-equilibrated streptozotocin solution. Solutions were prepared from dry compound containing 85% of the α anomer, which is the more toxic of the 2. Body weight and nonfasting blood glucose levels were measured weekly for 8 wk. Both solutions induced long-term hyperglycemia, but blood glucose levels and mortality were higher and damage to pancreatic islands more pronounced in the mice receiving freshly prepared solution. A small proportion of mice did not respond in both treatment groups. If stored at 4 °C in the dark, the anomer-equilibrated solution retains its biologic activity for at least 40 d; under those conditions the streptozotocin content decreases by 0.1% daily, as determined by HPLC. Anomer-equilibrated streptozotocin solution has several practical advantages, and we recommend its use as standard for the induction of experimental diabetes because this practice may improve reproducibility and comparison of results between different laboratories.

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Document Type: Research Article

Affiliations: 1: Virus and Stem Cell Biology Laboratory, Department of Molecular Cell Biology, Leiden University Medical Center, Leiden, the Netherlands 2: Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, the Netherlands

Publication date: January 1, 2010

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  • The Journal of the American Association for Laboratory Animal Science (JAALAS) serves as an official communication vehicle for the American Association for Laboratory Animal Science (AALAS). The journal includes a section of refereed articles and a section of AALAS association news. The mission of the refereed section of the journal is to disseminate high-quality, peer-reviewed information on animal biology, technology, facility operations, management, and compliance as relevant to the AALAS membership. JAALAS accepts research reports (data-based) or scholarly reports (literature-based), with the caveat that all articles, including solicited manuscripts, must include appropriate references and must undergo peer review.

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