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Study: Two Different Fat Graft Techniques Have Similar Effects on Facial Skin

(press release from ASPS)

ARLINGTON HEIGHTS, Ill. - Two approaches to fat grafting-injection of fat cells versus fat-derived stem cells-have similar effects in reversing the cellular-level signs of aging skin, reports a study in the April issue of Plastic and Reconstructive Surgery, the official medical journal of the American Society of Plastic Surgeons (ASPS).

Since the facial rejuvenation results are the same, the simpler approach using fat cells plus the "stromal vascular fraction" has advantages over the more time-consuming stem cell fat technique, according to the study by Dr. Gino Rigotti of Clinica San Francesco, Verona, Italy, and colleagues.

Fat Grafts vs. Stem Cells for Facial Rejuvenation

The experimental study compared the two approaches to fat grafting for regeneration of the facial skin. In these procedures, a small amount of the patient's own fat is obtained by liposuction from another part of the body, such as the abdomen. After processing, the fat is grafted (transplanted) to the treated area, such as the face or hands.

The study included six middle-aged patients who were candidates for facelift surgery. All underwent fat grafting to a small area in front of the ear.

One group of patients received fat-derived stem cells. Isolated and grown from the patients' fat, these specialized cells have the potential to develop into several different types of tissue. The other group underwent injection of fat cells along with the stromal vascular fraction (SVF)-a rich mix of cell types, including stem cells, separated out in fat processing.

Before and three months after fat grafting, samples of skin from the treated area were obtained for in-depth examination, including electron microscopy for ultrastructural-level detail.

After injection of fat cells plus SVF, the skin samples showed reduced degeneration of the skin's elastic fiber network, or "elastosis"-a key characteristic of aging skin. These findings were confirmed by ultrastructural examination, which demonstrated the reabsorption of the elastosis and the development of relatively "young" elastic fibers.

In patients undergoing stem cell injection, the skin changes were essentially identical. "This result seems to suggest that the effect of a fat graft is, at least in part, due to its stem cell component," Dr Rigotti and coauthors write.

The researchers also found "suggestive" evidence that the rejuvenating effects of fat grafting are related to new formation of microscopic blood vessels. Further studies are needed to confirm this hypothesis, however.

Both fat grafting approaches "appear very promising for facial anti-aging surgical techniques," Dr. Rigotti and colleagues conclude. Given the similar results, the researchers believe that fat cells plus SVF are preferable to stem cell injection. That's because the fat processing step is less expensive and faster-avoiding the need for stem cell expansion means the fat cells can be harvested, processed, and injected on the same day.

About Plastic and Reconstructive Surgery

For more than 60 years, Plastic and Reconstructive Surgery (PRS) has been the one consistently excellent reference for every specialist who uses plastic surgery techniques or works in conjunction with a plastic surgeon. The official journal of the American Society of Plastic Surgeons, PRS brings subscribers up-to-the-minute reports on the latest techniques and follow-up for all areas of plastic and reconstructive surgery, including breast reconstruction, experimental studies, maxillofacial reconstruction, hand and microsurgery, burn repair, and cosmetic surgery, as well as news on medico-legal issues.

About Wolters Kluwer Health

Wolters Kluwer Health is a leading global provider of information, business intelligence and point-of-care solutions for the healthcare industry. Serving more than 150 countries and territories worldwide, Wolters Kluwer Health's customers include professionals, institutions and students in medicine, nursing, allied health and pharmacy. Major brands include Health Language, Lexicomp, Lippincott Williams & Wilkins, Medicom, Medknow, Ovid, Pharmacy OneSource, ProVation Medical and UpToDate.

Wolters Kluwer Health is part of Wolters Kluwer, a market-leading global information services company. Wolters Kluwer had 2012 annual revenues of 3.6 billion ($4.6 billion), employs approximately 19,000 people worldwide, and maintains operations in over 40 countries across Europe, North America, Asia Pacific and Latin America.

About ASPS

The American Society of Plastic Surgeons (ASPS) is the world's largest organization of board-certified plastic surgeons. Representing more than 7,000 Member Surgeons, the Society is recognized as a leading authority and information source on aesthetic and reconstructive plastic surgery. ASPS comprises more than 94 percent of all board-certified plastic surgeons in the United States. Founded in 1931, the Society represents physicians certified by The American Board of Plastic Surgery or The Royal College of Physicians and Surgeons of Canada. ASPS advances quality care to plastic surgery patients by encouraging high standards of training, ethics, physician practice and research in plastic surgery. 


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