Inhibition of apoptosis-inducing factor translocation is involved in protective effects of hepatocyte growth factor against excitotoxic cell death in cultured hippocampal neurons

2005 ◽  
Vol 95 (5) ◽  
pp. 1277-1286 ◽  
Author(s):  
Naoko Ishihara ◽  
Norio Takagi ◽  
Makiko Niimura ◽  
Keiko Takagi ◽  
Midori Nakano ◽  
...  
1998 ◽  
Vol 18 (4) ◽  
pp. 345-348 ◽  
Author(s):  
Takahito Miyazawa ◽  
Kunio Matsumoto ◽  
Hidenori Ohmichi ◽  
Hiroshi Katoh ◽  
Tetsumori Yamashima ◽  
...  

Hepatocyte growth factor (HGF), a natural ligand for the c-met protooncogene product, exhibits mitogenic, motogenic, and morphogenic activities for regeneration of the liver, kidney, and lung. Recently, HGF was clearly shown to enhance neurite outgrowth in vitro. To determine whether HGF has a neuroprotective action against the death of neurons in vivo, we studied the effect of HGF on delayed neuronal death in the hippocampus after 5-minute transient forebrain ischemia in Mongolian gerbils. Continuous postischemic intrastriatal administration of human recombinant HGF (10 or 30 μg) for 7 days potently prevented the delayed death of hippocampal neurons under both anesthetized and awake conditions. Even when HGF infusion started 6 hours after ischemia (i.e., in a delayed manner), HGF exhibited a neuroprotective action. We conclude that HGF, a novel neurotrophic factor, has a profound neuroprotective effect against postischemic delayed neuronal death in the hippocampus, which may have implications for the development of new therapeutic strategies for ischemic neuronal damage in humans.


2018 ◽  
Vol 233 (12) ◽  
pp. 9354-9364 ◽  
Author(s):  
Mayrel Palestino‐Dominguez ◽  
Mario Pelaez‐Luna ◽  
Roberto Lazzarini‐Lechuga ◽  
Ignacio Rodriguez‐Ochoa ◽  
Veronica Souza ◽  
...  

Development ◽  
1997 ◽  
Vol 124 (15) ◽  
pp. 2903-2913 ◽  
Author(s):  
Y. Yamamoto ◽  
J. Livet ◽  
R.A. Pollock ◽  
A. Garces ◽  
V. Arce ◽  
...  

Muscle-derived factors are known to be important for the survival of developing spinal motoneurons, but the molecules involved have not been characterized. Hepatocyte growth factor/scatter factor (HGF/SF) plays an important role in muscle development and motoneuron axon outgrowth. We show that HGF/SF has potent neurotrophic activity (EC50=2 pM) for a subpopulation (40%) of purified embryonic rat motoneurons. Moreover, HGF/SF is an essential component of muscle-derived support for motoneurons, since blocking antibodies to HGF/SF specifically inhibited 65% of the trophic activity of media conditioned by C2/C7 skeletal myotubes, but did not inhibit the trophic activity secreted by Schwann cell lines. High levels of expression of the HGF/SF receptor c-Met in the spinal cord are restricted to subsets of motoneurons, mainly in limb-innervating segments. Consistent with this distribution, cultured motoneurons from limb-innervating brachial and lumbar segments showed a more potent response to HGF/SF than did thoracic motoneurons. By the end of the period of motoneuron cell death, levels of c-Met mRNA in motoneurons were markedly reduced, suggesting that the effects of HGF/SF may be limited to the period of motoneuron cell death. HGF/SF may play an important role during motoneuron development as a muscle-derived survival factor for a subpopulation of limb-innervating motoneurons.


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