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Distribution of the transcription factor Signal Transducer and Activator of Transcription 3 in the rat central nervous system and dorsal root ganglia
Linköping University, Faculty of Health Sciences. Linköping University, Department of Biomedicine and Surgery, Cell biology.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Pharmacology.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Biomedicine and Surgery, Cell biology.
2000 (English)In: Brain Research, ISSN 0006-8993, Vol. 853, no 1, 105-114 p.Article in journal (Refereed) Published
Abstract [en]

Signal Transducer and Activator of Transcription 3 (STAT3) is a transcription factor that acts as an intracellular signalling molecule after receptor activation by several cytokines, e.g., interleukin-6, leptin and ciliary neurotrophic factor. We have investigated the localization of STAT3 in the rat central nervous system and dorsal root ganglia. Light microscopic immunohistochemistry showed that STAT3-like immunoreactivity (STAT3-LI) was present in the nucleus and cytoplasm of neurons. STAT3-LI was seen both in cell bodies and in proximal and distal dendrites. Many structures involved in motor functions, such as the ventral horn of the spinal cord, the motor cranial nerve nuclei, the red nucleus and the Purkinje cells of the cerebellum showed STAT3-LI. STAT3-LI was also present in many regions involved in autonomic regulation, such as the intermediolateral cell column of the spinal cord, the nucleus of the solitary tract, the dorsal motor nucleus of the vagus nerve, the area postrema, the locus coeruleus, the Barrington's nucleus and the arcuate, the lateral, the dorsomedial, the ventromedial, and the paraventricular hypothalamic nuclei. Other structures showing STAT3-LI were the dorsal root ganglia, the thalamus (the anterodorsal and paraventricular nucleus), the cerebral neocortex (layer 5) and the olfactory bulb. The wide distribution of STAT3-LI in the nervous system is consistent with reports of cytokine actions in the brain, but the present findings further suggest novel roles for STAT3 in mediating influences of cytokines on specific neuronal circuits regulating motor, sensory and autonomic functions.

Place, publisher, year, edition, pages
2000. Vol. 853, no 1, 105-114 p.
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Medical and Health Sciences
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URN: urn:nbn:se:liu:diva-25073DOI: 10.1016/S0006-8993(99)02260-XLocal ID: 9503OAI: oai:DiVA.org:liu-25073DiVA: diva2:245399
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2011-01-14

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Svensson, Samuel

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