Human umbilical cord blood mononuclear cell transplantation in rats with intrinsic sphincter deficiency.
To evaluate the effectiveness of the human umbilical cord blood (HUCB) transplantation for the treatment of intrinsic sphincter deficiency (ISD), we analyzed the short term effects of HUCB mononuclear cell transplantation in rats with induced-ISD. ISD was induced in rats by electro-cauterization of periurethral soft tissue with HUCB mononuclear cell injection after 1 week. The sphincter function measured by mean leak point pressure was significantly improved in the experimental group compared to the control group at 4 weeks. (91.75+/-18.99 mmHg vs. 65.02+/-22.09 mmHg, P=0.001). Histologically, the sphincter muscle was restored without damage while in the control group it appeared markedly disrupted with atrophic muscle layers and collagen deposit. We identified injected HUCB cells in the tissue sections by Di-I signal and Prussian blue staining. HUCB mononuclear cell injection significantly improved urethral sphincter function, suggesting its potential efficacy in the treatment of ISD.
Lim
Joa-Jin
JJ
Cha Stem Cell Institute, CHA University, School of Medicine, Seoul, Korea.
Jang
Jin-Beum
JB
Kim
Ji-Young
JY
Moon
Sung-Hwan
SH
Lee
Chung-No
CN
Lee
Kyung-Jin
KJ
D000818:Animals; D002478:Cells, Cultured; D036101:Cord Blood Stem Cell Transplantation / Q000379:methods*; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000637:transplantation*; D051381:Rats; D017207:Rats, Sprague-Dawley; D016896:Treatment Outcome; D014550:Urinary Incontinence, Stress / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery*; D013520:Urologic Surgical Procedures / Q000379:methods*