Down regulation by a low-zinc diet in gene expression of rat prostatic thymidylate synthase and thymidine kinase

作者：Ishikawa Yuko; Kudo Hideki; Suzuki Satoe; Nemoto Nahoko; Sassa Shuji; Sakamoto Shinobu^*

来源：Nutrition & Metabolism, 2008, 5: 12.

DOI：10.1186/1743-7075-5-12

Background: Zinc has a wide spectrum of biological activities and its deficiency is related to various abnormalities of cell metabolism.
Methods: Wistar male rats, at age of 4 weeks, were fed a low-zinc diet for six weeks. The levels of bromodeoxyuridine incorporated into the prostatic DNA and the mRNA expression levels of prostate thymidylate synthase and thymidine kinase were examined.
Result: The low-zinc diet caused a marked reduction in the body growth and organ weights, resulted in a low hematopoiesis, hypo-albuminemia and hypocholesterolemia. Although there were few differences in plasma biochemical markers, plasma levels of luteinizing hormone and testosterone were reduced by the low-zinc diet. Bromodeoxyuridine-immunoreactive (S-phase) cells and mRNA expression levels of thymidylate synthase and thymidine kinase in the prostate cells were markedly affected by the low-zinc diet.
Conclusion: A low-zinc diet appears to reduce the body growth and organ weights including prostate, causing low plasma levels of luteinizing hormone and testosterone and reduction in prostate DNA replication in growing-rats.

• 出版日期2008-5-18
• 单位河北医科大学