Effectiveness of Intracavernous Delivery of Recombinant Human Hepatocyte Growth Factor on Erectile Function in the Streptozotocin-Induced Diabetic Mouse.
J Sex Med
; 13(11): 1618-1628, 2016 11.
Article
em En
| MEDLINE
| ID: mdl-27770854
ABSTRACT
INTRODUCTION:
Diabetic erectile dysfunction is a disease mostly of vascular origin and men with diabetic erectile dysfunction respond poorly to oral phosphodiesterase-5 inhibitors. Hepatocyte growth factor (HGF) is a pleiotropic factor that plays an essential role in the regulation of cell proliferation, survival, and angiogenesis.AIM:
To determine the effectiveness of recombinant human (rh)-HGF in restoring erectile function in diabetic mice.METHODS:
Four groups of mice were used control non-diabetic mice and streptozotocin-induced diabetic mice receiving two successive intracavernous injections of phosphate buffered saline (days -3 and 0), a single intracavernous injection of rh-HGF (day 0), or two successive intracavernous injections of rh-HGF (days -3 and 0). We also examined the effect of rh-HGF in primary cultured mouse cavernous endothelial cells and in major pelvic ganglion culture in vitro, which was incubated under a normal-glucose (5 mmol/L) or a high-glucose (30 mmol/L) condition. MAIN OUTCOMEMEASURES:
Two weeks after treatment, we measured erectile function by electrical stimulation of the cavernous nerve and the penis was harvested for histologic studies.RESULTS:
Repeated intracavernous injections of rh-HGF protein induced significant restoration of erectile function in diabetic mice (89-100% of control values), whereas a single intracavernous injection of rh-HGF protein elicited modest improvement. Rh-HGF significantly induced phosphorylation of its receptor c-Met, increased the content of endothelial cells and smooth muscle cells, and decreased the generation of reactive oxygen species (superoxide anion and peroxynitrite) and extravasation of oxidized low-density lipoprotein in diabetic mice. Under the high-glucose condition, rh-HGF protein also promoted tube formation in mouse cavernous endothelial cells and enhanced neurite sprouting in major pelvic ganglion culture in vitro.CONCLUSION:
The dual angiogenic and neurotrophic effects of HGF could open a new avenue through which diabetic erectile dysfunction can be treated.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ereção Peniana
/
Fator de Crescimento de Hepatócito
/
Disfunção Erétil
Limite:
Animals
/
Humans
/
Male
Idioma:
En
Revista:
J Sex Med
Assunto da revista:
GINECOLOGIA
/
MEDICINA REPRODUTIVA
/
UROLOGIA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Japão