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Background：Diabetes mellitus (DM) is an important risk factor for erectile dysfunction (ED). Adipose-derived stem cells (ADSCs) and low-intensity extracorporeal shockwave therapy (LI-ESWT) are two emerging therapies for ED. The efficacy of ADSCs combined LI-ESWT in the treatment of diabetes induced erectile dysfunction (DMED) was not completely elucidated. This study aim to investigate combined therapeutic efficacy of ADSCs and LI-ESWT in rat model of DMEDand whether they have interaction.Methods：Rats were randomly divided into 5 groups: control, erectile dysfunction group (ED), ADSCs treatment group(ADSCs), LI-ESWT treatment group (LI-ESWT) and ADSCs combined with LI-ESWT treatment (ADSCs+LI-ESWT). After 4 weeks, erectile function was assessed using intracavernous pressure (ICP) and mean arterial pressure (MAP), after that performed immunohistochemistry (IH).Results：Finally, a total of 98 rats completed the experiment. The ICP/MAP of five groups under the voltage stimulation of 10V was significantly different (P>0.05). ICP/MAP in ADSC group, LI-ESWT group and combined treatment group was significantly higher than that of ED model group; ICP/MAP in combined treatment group was higher than ADSC group and LI-ESWT group. Interaction between LI-ESWT and ADSCs therapy was not statistically significant (P＞0.05).The expression of -smooth muscle actin (-SMA), nerve nitricoxide synthase (nNOS) and von Willebrand factor (vWF) in ADSCs treatment group, LI-ESWT group and combined treatment group was higher than those in ED model group (P < 0.05).Conclusions：Both ADSCs and LI-ESWT therapy can improve the erectile function of rats. The combination of these two methods present better effect on ED than used individually. There is no positive interaction between ADSCs therapy and LI-ESWT. Both ADSCs and LI-ESWT can enhance the expression of α-SMA, nNOS and vWF in corpus cavernosum of ED rats. |
