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concentration of BDNF protein in penile tissues was measured by Western blotting. Results Rats intracavernosally injected with BDNFhUCB-MSCs showed the most significant improvement in the ratio of maximal ICP to MAP (ICP/MAP). Histological examinations showed moderate recovery of nNOS-positive nerve fibers, ratio of smooth muscle to collagen and smooth muscle content in the CNEI + hUCB-MSCs group and remarkable recovery in the CNEI + BDNF-hUCB-MSCs group compared to the CNEI + PBS group. By TEM examination, atrophy of myelinated and non-myelinated nerve fibers was noted in CNEI + PBS group and significant recovery was observed in two treated groups. There were more BrdU-positive cells in the BDNF-hUCB-MSCs group than in the hUCB-MSCs group both in the penis and in the MPG. Three days post-surgery, the concentration of BDNF protein in penile tissues in BDNF-hUCB-MSCs group was much higher than in other groups. Conclusions Intracavernous injection of BDNF-hypersecreting hUCB-MSCs can enhance the recovery of erectile function, promote the CNs regeneration and inhibit corpus cavernosum fibrosis after CNEI in a rat model.

urological science

Bdnf-hypersecreting human umbilical cord blood mesenchymal stem cells promote erectile function in a rat model of cavernous nerve electrocautery injury