105 Abstract: Fourteen rats were examined and divided into two groups of 7: the control (Group a) and NGF-treated animals (Group B). All animals received a 50 g clipcompression injury to tthe spinal cord at the T9 level. In the NGF-treated animals, NGF (0.1 mg/kg NGF) was injected subcutaneously for seven days. After spinal cord injury, the mean AChE activity was 41.47±1.7122 activated substrat...

NGF is implicated in retinal damage regression. To study whether this is a direct effect or an effect mediated by NGF on other endogenous biological mediators, we investigated the effect of exogenous administration of NGF in RCS rats affected by retinitis pigmentosa. We found that NGF administration exerts a rescue effect on photoreceptors in this animal model. NGF injection enhances brain-deri...

AIMS It has been shown that nerve growth factor-β (NGF-β) promoted the initiation and progression of many tumors, and we have previously demonstrated that the expression of NGF-β was associated with tumor stage, nerve infiltration and lymph node metastasis in human hilar cholangiocarcinoma. However, whether NGF-β promotes tumor progression in human cholangiocarcinoma requires further investigat...

In the human prostate, a low affinity (p75) nerve growth factor (NGF) receptor (NGF-R) localizes to the epithelia while a NGF-like protein localizes to the strum».This NGF-like ligand, derived from prostate stromal cell cultures, has been shown to participate in paracrine medi ated growth of a human tumor epithelial cell line (TSU-prl) in vitro. In order to investigate the role of the NGF-R in...

Nerve growth factor (NGF) is a target-derived trophic factor for developing sympathetic and cutaneous sensory neurons. NGF promotes growth and survival of neurons via activation of the receptor tyrosine kinase TrkA. We used compartmentalized cultures of sympathetic neurons to address the mechanism of NGF signaling from distal axons and terminals to proximal axons and cell bodies. Our results de...

NERVE GROWTH FACTOR (NGF) has been suggested to play a role in bladder pain by mediating inflammation (12) and functional changes in sensory and sympathetic neurons innervating the urinary bladder (5). Clinically, diseases such as interstitial cystitis/painful bladder syndrome (IC/PBS) have been associated with elevated urinary levels of NGF (10), and the urothelium of individuals with IC/PBS p...

OBJECTIVES Nerve growth factor (NGF) is a promising analgesic target, particularly in osteoarthritis (OA) where existing therapies are inadequate. We hypothesised that pain responses to NGF are increased in OA joints. Here, NGF-evoked pain behaviour was compared in two rodent models of OA, and possible mechanisms underlying altered pain responses were examined. METHODS OA was induced in rat k...

We studied the synthesis and release of nerve growth factor (NGF) in cultured rat iris with a two-site enzyme immunoassay by measuring the time course of NGF levels remaining in the iris and relased into the medium up to 72 h. For up to 3 h, the NGF levels in the iris did not change significantly. After that, they increased to a maximal level of 350 +/- 30 pg NGF/iris at 19 h, which is 200 time...

Four mutant PC12 pheochromocytoma cell lines that are nerve growth factor (NGF)-nonresponsive (PC12nnr) have been selected from chemically mutagenized cultures by a double selection procedure: failure both to grow neurites in the presence of NGF and to survive in NGF-supplemented serum-free medium. The PC12nnr cells were deficient in all additional NGF responses surveyed: abatement of cell prol...