Abstract
The treatment outcomes for inflammatory bowel disease (IBD) have been improving, but the development of better therapies is needed. Stem cell therapy is promising, but little is known about the differences in adipose-derived stem cells (ADSCs) between IBD patients and healthy individuals. ADSCs were isolated from subcutaneous adipose tissue (SAT) in IBD (Crohn's disease, 3; ulcerative colitis, 2) and non-IBD (colorectal cancer, 5; breast cancer, 1) patients. We also analyzed the effects of tumor necrosis factor (TNF)-α on murine ADSCs. The numbers of stromal vascular fraction (SVF) cells per gram of SAT were 7.72±3.03×105 in IBD and 8.51±8.80×105 in non-IBD patients (p>0.05). The proportions of ADSCs in SVF cells were 4.98±2.61% in IBD and 1.02±0.67% in non-IBD patients. The numbers of ADSCs per gram of SAT were 4.16±2.96×104 in IBD and 0.88±1.04×104 in non-IBD patients. The proportions and numbers of ADSCs were significantly higher in IBD patients than in non-IBD patients. TNF-α significantly facilitated the proliferation and motility of murine ADSCs. These results showed the potential advantage of freshly isolated autologous ADSCs in IBD patients.
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