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Journal of Histochemistry and Cytochemistry
Volume 51 (12): 1655-1664, 2003
Copyright ©The Histochemical Society, Inc.

Localization of a Brain Sulfotransferase, SULT4A1, in the Human and Rat Brain : An Immunohistochemical Study

Nancy E. Liyou, Kathryn M. Buller, Michael J. Tresillian, Christopher M. Elvin, Heather L. Scott, Peter R. Dodd, Anthony E.G. Tannenberg and Michael E. McManus

School of Biomedical Sciences, University of Queensland, St Lucia, Queensland, Australia

Correspondence to: Dr. Nancy Liyou, School of Biomedical Sciences, University of Queensland, St Lucia, 4072 Queensland, Australia. E-mail: nancyliyou{at}optushome.com.au

Cytosolic sulfotransferases are believed to play a role in the neuromodulation of certain neurotransmitters and drugs. To date, four cytosolic sulfotransferases have been shown to be expressed in human brain. Recently, a novel human brain sulfotransferase has been identified and characterized, although its role and localization in the brain are unknown. Here we present the first immunohistochemical (IHC) localization of SULT4A1 in human brain using an affinity-purified polyclonal antibody raised against recombinant human SULT4A1. These results are supported and supplemented by the IHC localization of SULT4A1 in rat brain. In both human and rat brains, strong reactivity was found in several brain regions, including cerebral cortex, cerebellum, pituitary, and brainstem. Specific signal was entirely absent on sections for which preimmune serum from the corresponding animal, processed in the same way as the postimmune serum, was used in the primary screen. The findings from this study may assist in determining the physiological role of this SULT isoform. (J Histochem Cytochem 51:1655–1664, 2003)

Key Words: immunohistochemistry • sulfotransferase • human brain • rat brain • neuron • localization


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