Shuhei Yoshida1, Rodrigo Hamuy1, Yuuichi Hamada2, Hiroshi Yoshimoto1, Akiyoshi Hirano1, Sadanori Akita1. 1. Division of Plastic & Reconstructive Surgery, Department of Developmental & Reconstructive Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852 8501, Japan. 2. Division of Plastic & Reconstructive Surgery, Oita Sanai Medical Center, 1213 Ichi, Oita 870-1151, Japan.
Abstract
AIM: Secondary lymphedema is observed in common after postmalignancy treatment of the breast and the gynecologic organs but effective therapies are not established. Adipose-derived stem cells (ADSCs), which are pluripotent, regenerative in local injection, are tested for murine hindlimb secondary lymphedema by regenerative method. METHODS & RESULTS: Mice were divided into four groups: no ADSCs, 1 × 10(6) ADSCs, 1 × 10(5) ADSCs and 1 × 10(4) ADSCs (each group, n = 20) in a stringent surgical resection and irradiation. Circumferential measurement, lymphatic flow assessment and quantification of lymphatic vessels were performed. RESULTS: The numbers of lymphatic vessels by LYVE-1 immunohistochemistry, and VEGF-C- or VEGFR3-expressing cells were significantly increased in transplanted groups (p < 0.05). CONCLUSION: ADSCs can restore the lymphatic vascular network in secondary lymphedema with increased collecting vessels.
AIM: Secondary lymphedema is observed in common after postmalignancy treatment of the breast and the gynecologic organs but effective therapies are not established. Adipose-derived stem cells (ADSCs), which are pluripotent, regenerative in local injection, are tested for murine hindlimb secondary lymphedema by regenerative method. METHODS & RESULTS:Mice were divided into four groups: no ADSCs, 1 × 10(6) ADSCs, 1 × 10(5) ADSCs and 1 × 10(4) ADSCs (each group, n = 20) in a stringent surgical resection and irradiation. Circumferential measurement, lymphatic flow assessment and quantification of lymphatic vessels were performed. RESULTS: The numbers of lymphatic vessels by LYVE-1 immunohistochemistry, and VEGF-C- or VEGFR3-expressing cells were significantly increased in transplanted groups (p < 0.05). CONCLUSION: ADSCs can restore the lymphatic vascular network in secondary lymphedema with increased collecting vessels.
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