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This study is a single-blind intra-individual comparative study to evaluate the short and medium term tissue response after the injection of 2 brands of hyaluronic acid gels (HA), designed for deep injection, that have been used for several years on a worldwide scale.
The study will be disclosed to patients who present with an indication for either abdominoplasty or bilateral breast reduction with a Wise pattern skin excision (inverted T inframammary scar) Informed consent will be obtained from volunteers at their next consultation, during which the preoperative preparation is finalised and the surgery is booked.
Participants will receive injections for the first time three weeks to four months before the operation and for the second time five to nine days before the operation, in tissue that will be removed during the surgery.
In each session, through one single access point, a linear retrograde, subcutaneous injection will be performed with 0,5 ml of each of the studied hyaluronic acid gels, each in an opposite direction, each parallel to the skin surface.
Both sessions will be monitored by ultrasound examination. After the injections, the 2 cm of injected area which is most remote from the entrance point of the cannula will be remodelled by finger pressure and tissue pinching, to simulate remodelling as commonly performed after filler injection.
At the beginning of the operation, the injected subcutaneous fat will be removed with the overlying skin, to be sent for histologic examination.
The objective of the histologic examination is to assess the tissue response at one week versus three weeks to four months after the injection, as well as to assess the spread of the products, with and without remodelling after injection.
Allocation: Randomized, Intervention Model: Single Group Assignment, Masking: Single Blind (Subject), Primary Purpose: Basic Science
Hyaluronic Acid filler, Hyaluronic Acid filler
Universitair Ziekenhuis Brussel
Not yet recruiting
Vandeputte, Joan, M.D.
Published on BioPortfolio: 2016-08-17T10:53:22-0400
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Mucoid states characterized by the elevated deposition and accumulation of mucin (mucopolysaccharides) in dermal tissue. The fibroblasts are responsible for the production of acid mucopolysaccharides (GLYCOSAMINOGLYCANS) in the ground substance of the connective tissue system. When fibroblasts produce abnormally large quantities of mucopolysaccharides as hyaluronic acid, chondroitin sulfate, or heparin, they accumulate in large amounts in the dermis.
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