background and objective: due to the presence of some evidence for anti-diabetic and antioxidant activity of tribulus terrestris (tt), this study was designed to investigate the anti-nociceptive effect of tt in streptozotocin-diabetic rats using formalin test and hot tail immersion tests. materials and methods: rats were divided into control, tt-treated control, diabetic, sodium salicylate (ss)...

while for a long time it has been perceived that neonates and young children do not perceive pain as the adult, this notion had to be corrected on the basis of neurophysiological data and the ontogenisis of the nociceptive system. also, it has been demonstrated conclusively that neonates and the young infant perceive pain at a much lower nociceptive input which is largely due to a still immatur...

Maturation of the nervous system results in changes in both central and peripheral processing. To better understand responses to injury in the young, developmental differences in the acute response to incision were investigated in both tactile and nociceptive myelinated peripheral mechanosensitive afferent neurons in vivo. Neuronal intrasomal recordings were performed in juvenile and infant rat...

Cellular prion protein (PrPC) inhibits N-Methyl-D-Aspartate (NMDA) receptors. Since NMDA receptors play an important role in the transmission of pain signals in the dorsal horn of spinal cord, we thus wanted to determine if PrPC null mice show a reduced threshold for various pain behaviours.We compared nociceptive thresholds between wild type and PrPC null mice in models of inflammatory and neu...

In the vagal-sensory system, neuropeptides such as substance P and calcitonin gene-related peptide (CGRP) are synthesized nearly exclusively in small-diameter nociceptive type C-fiber neurons. By definition, these neurons are designed to respond to noxious or tissue-damaging stimuli. A common feature of visceral inflammation is the elevation in production of sensory neuropeptides. Little is kno...

Lameness is common in commercially reared broiler chickens but relationships between lameness and pain (and thus bird welfare) have proved complex, partly because lameness is often partially confounded with factors such as bodyweight, sex and pathology. Thermal nociceptive threshold (TNT) testing explores the neural processing of noxious stimuli, and so can contribute to our understanding of pa...

BACKGROUND Investigations based on quantitative sensory testing have consistently shown evidence of allodynia in fibromyalgia syndrome (FMS) patients involving both the spinal and supraspinal pain regulatory systems. Functional imaging studies have demonstrated enhanced neural activities in pain-related brain areas as well as impairment of pain inhibition in the descending nociceptive regulator...

1°HA = primary hyperalgesic area 2°HA = secondary hyperalgesic area NWR = nociceptive withdrawal reflex ISI = inter stimulus interval WDR = wide dynamic range (neuron) NS = nociceptive specific (neuron) LTM = low threshold mechanoreceptor-2-The present thesis is based on the papers listed below (in the text referred to by roman numerals). The original papers are attached. Modulation of the huma...

Control of cancer, neuropathic, and postoperative pain is frequently inadequate or compromised by debilitating side effects. Inhibition or removal of certain nociceptive neurons, while retaining all other sensory modalities and motor function, would represent a new therapeutic approach to control severe pain. The enriched expression of transient receptor potential cation channel, subfamily V, m...