alexa Reconstitution of experimental neurogenic bladder dysfunction using skeletal muscle-derived multipotent stem cells
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Stem Cell Research & Therapy

Author(s): Nitta M

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BACKGROUND.: Postoperative neurogenic bladder dysfunction is a major complication of radical hysterectomy for cervical cancer and is mainly caused by unavoidable damage to the bladder branch of the pelvic plexus (BBPP) associated with colateral blood vessels. Thus, we attempted to reconstitute disrupted BBPP and blood vessels using skeletal muscle-derived multipotent stem cells that show synchronized reconstitution capacity of vascular, muscular, and peripheral nervous systems. METHODS.: Under pentobarbital anesthesia, intravesical pressure by electrical stimulation of BBPP was measured as bladder function. The distal portion of BBPP with blood vessels was then cut unilaterally (experimental neurogenic bladder model). Measurements were performed before, immediately after, and at 4 weeks after transplantation as functional recovery. Stem cells were obtained from the right soleus and gastrocnemius muscles after enzymatic digestion and cell sorting as CD34/45 (Sk-34) and CD34/45 (Sk-DN). Suspended cells were autografted around the damaged region, whereas medium alone and CD45 cells were transplanted as control groups. To determine the morphological contribution of the transplanted cells, stem cells obtained from green fluorescent protein transgenic mouse muscles were transplanted into a nude rat model and were examined by immunohistochemistry and immunoelectron microscopy. RESULTS.: At 4 weeks after surgery, the transplantation group showed significantly higher functional recovery ( approximately 80%) than the two controls ( approximately 28% and 24%). The transplanted cells showed an incorporation into the damaged peripheral nerves and blood vessels after differentiation into Schwann cells, perineurial cells, vascular smooth muscle cells, pericytes, and fibroblasts around the bladder. CONCLUSION.: Transplantation of multipotent Sk-34 and Sk-DN cells is potentially useful for the reconstitution of damaged BBPP.

This article was published in Transplantation. and referenced in Journal of Stem Cell Research & Therapy

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