VASER Liposuction: A Good Source for Mesenchymal Stromal Cells

Mesenchymal stromal cells (MSCs) are the spindle shaped plastic-adherent cells isolated from bone marrow, adipose, and other tissue sources, with multipotent differentiation capacity in vitro.  These mesenchymal stromal cells could differentiate to bone in vitro and a subset of the cells that has a high proliferative potential . The notion of a mesenchymal stem cell was popularized by Arnold Caplan proposing that MSCs gave rise to bone, cartilage, tendon, ligament, marrow stroma, adipocytes, dermis, muscle and connective tissue. Adipose-derived mesenchymal stromal cells (ASCs) are concentrated in fat tissue, and the ease of harvest via liposuction makes them a particularly interesting cell source.   Thus, fat has been transferred to the face for facial rejuvenation, as well as to the buttock for buttock augmentation.  It has shown that radiation-induced damage skin are dramatically improved by fat transfer.  

Recently, ultrasound-assisted liposuction using VASER liposuction and Lysosonix were found to harvest viable mesenchymal stromal cells.  "UAL samples demonstrated equivalent ASC yield and viability. VASER Liposuction adipose-derived mesenchymal stem cells showed higher osteogenic and adipogenic marker expression, but a comparable differentiation capacity was observed. Soft tissue healing and neovascularization were significantly enhanced via both UAL-derived ASCs in vivo, and there was no significant difference between the cell therapy groups."

VASER Liposuction allows safe and efficient harvesting of the mesenchymal stromal cellular fraction of adipose tissue and that cells harvested via this approach are suitable for cell therapy and tissue engineering applications.

Recent studies have shown that adipose tissue derived using the VASER liposuction system were viable at harvest and suitable for autologous fat grafts, such as in Brazilian Butt Lifts.   The study had shown that "the lipolysis assay revealed metabolically active adipocytes with a mean (SD) correlative viability of 85.1%. Direct measures of acute viability via propidium iodide staining resulted in a mean (SD) viability measure of 88.7%.

Reference:

Duscher, et al. Ultrasound-assisted liposuction provides a source for functional adipose-derived stromal cells. Cytotherapy. 2017 Sep 13. pii: S1465-3249(17)30658-8. doi: 10.1016/j.jcyt.2017.07.013. [Epub ahead of print]

Schafer et al.  Acute adipocyte viability after third-generation ultrasound-assisted liposuction.  Aesthetic Surgery Journal. 2013 Jul;33(5):698-704. doi: 10.1177/1090820X13485239. Epub 2013 May 29.

Emmanuel De La Cruz MD, PLLC

Houston Plastic Surgeon

Fat Graft Harvested via VASER Liposuction is Viable and Suitable for Fat Transfer in Brazilian Butt Lift Patients

Although there's clinical evidence of successful autologous fat transfer (AFT), such as in Brazilian Butt Lift, using VASER liposuction is readily available, no study has quantified adipocyte viability using standardized methods until recently.

• The UAL system (VASER; Sound Surgical Technologies, Inc, Louisville, Colorado) was set at 60% amplitude in pulsed mode with vacuum aspiration of 15 in Hg or less.
• Laboratory analysis included free lipid volume, viability via lipolysis and propidium iodide staining, and cytological analysis, including cell surface protein examination and hematoxylin and eosin staining.
• The lipolysis assay revealed metabolically active adipocytes with a mean (SD) correlative viability of 85.1%
• Direct measures of acute viability via propidium iodide staining resulted in a mean (SD) viability measure of 88.7%
• Adipose tissue acquired via VASER liposuction is viable at harvest and isa suitable source for autologous fat grafts, especially for Brazilian Butt Lift.
• Adiposed-derived stem cells (fat for fat transfer) obtained via VASER liposuction were of equal quality when directly compared with the current gold standard harvest method according to a study conducted by Duscher.   "UAL- and SAL-derived samples demonstrated equivalent ASC yield and viability, and UAL ASCs were not impaired in their osteogenic, adipogenic, or chondrogenic differentiation capacity."

4D VASER Liposuction performed by Dr. Emmanuel De La Cruz of Houston, Texas

Reference:

Duscher, et al. Ultrasound-Assisted Liposuction Does Not Compromise the Regenerative Potential of Adipose-Derived Stem Cells.  Stem Cells Transl Med. 2016 Feb;5(2):248-57. doi: 10.5966/sctm.2015-0064. Epub 2015 Dec 23.

Schafer, et al.  Acute adipocyte viability after third-generation ultrasound-assisted liposuction. Aesthet Surg J. 2013 Jul;33(5):698-704. doi: 10.1177/1090820X13485239. Epub 2013 May 29.