Within-Subject Comparison of Adipose Tissue Viability Following Liposuction
A Prospective Within-Subject Comparison of Adipose Tissue Viability and Cellular Characteristics Following Ultrasound- and Power-Assisted Liposuction and Aspiration Modalities
Descripción general del estudio
Estado
Estado
Condiciones
Condiciones
Intervención / Tratamiento
Intervención / Tratamiento
Descripción detallada
This study will compare the quality of fat tissue collected using different liposuction technologies and aspiration methods. Participants will have paired samples of fat tissue collected from similar areas of the body during their planned liposuction procedure. Each participant will serve as their own comparison.
The study will evaluate the viability and characteristics of the collected fat tissue, including the number of viable fat cells, the types and number of cells present in the tissue, metabolic activity, and the composition of the collected tissue. The study will compare these characteristics between the different liposuction technologies and aspiration methods.
The goal of this study is to better understand how different liposuction technologies and aspiration methods affect the quality and characteristics of harvested fat tissue. Participants are not expected to receive any direct clinical benefit from participating in the study beyond that associated with their planned liposuction procedure.
Tipo de estudio
Tipo de estudio
Inscripción (Estimado)
Inscripción
Fase
Fase
- No aplica
Contactos y Ubicaciones
Estudio Contacto
Estudio Contacto
- Nombre: Global Senior Director, Clinical Affairs
- Número de teléfono: 1-800-537-2790
- Correo electrónico: research@apyxmedical.com
Ubicaciones de estudio
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Ohio
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Concord, Ohio, Estados Unidos, 44077
- Reclutamiento
- Mentor Plastic Surgery
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Contacto:
- Petula Kelly
- Número de teléfono: 440-205-5750
- Correo electrónico: petula@paulvanekmd.com
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Contacto:
- Mindy Renick
- Número de teléfono: 440-205-5750
- Correo electrónico: Mindy@paulvanekmd.com
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Investigador principal:
- Paul Vanek, MD
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Washington
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Olympia, Washington, Estados Unidos, 98506
- Reclutamiento
- Pearl Plastic Surgery
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Contacto:
- Shauna Smith-Ewers
- Número de teléfono: 360-878-9300
- Correo electrónico: shauna@pearlplasticsurgery.com
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Contacto:
- Elle Mortensen
- Número de teléfono: 360-878-9300
- Correo electrónico: elle@pearlplasticsurgery.com
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Investigador principal:
- Chris Nichols, MD
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Investigador principal:
- Dan Albershardt, MD
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Sub-Investigador:
- Owen Johnson, MD
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Criterios de participación
Criterio de elegibilidad
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Descripción
Inclusion Criteria:
- Male or female aged 30 to 65 years, inclusive.
- Planned elective liposuction/body contouring procedure involving two or more anatomical areas (e.g., arms, abdomen, flanks, thighs, and/or back) with sufficient distribution to permit collection of paired adipose tissue samples from contralateral or anatomically matched treatment areas.
- Investigator determines the subject is an appropriate candidate for the planned procedure and study participation.
- Adequate adipose tissue is present to permit collection of required paired fat samples without impacting the planned surgical outcome.
- Able to understand and sign the informed consent form.
- Willing and able to comply with study requirements.
- If applicable, female subjects of childbearing potential must have a negative urine pregnancy test on the day of procedure.
Exclusion Criteria:
- Prior liposuction or surgical intervention in the planned treatment areas that, in the opinion of the investigator, may affect adipose tissue characteristics or study assessments.
- Prior treatment of the planned treatment areas with energy-based devices (e.g., ultrasound, radiofrequency, laser) that, in the opinion of the investigator, may affect adipose tissue characteristics or study assessments.
- Significant skin laxity, fibrosis, scarring, or other abnormal tissue characteristics in the planned treatment areas that could impact fat harvest quality or comparability between sites.
- Current smoker or use of nicotine-containing products within 4 weeks prior to the procedure.
Known metabolic or systemic conditions that may affect adipose tissue biology or wound healing, including but not limited to:
- uncontrolled diabetes mellitus
- significant vascular disease
- connective tissue disorders
Use of medications known to significantly affect fat metabolism, tissue healing, or inflammatory response, including:
- chronic systemic corticosteroids
- immunosuppressive therapies
- GLP-1 receptor agonists (e.g., semaglutide, tirzepatide) within 4 weeks prior to the procedure
- Active local or systemic infection at the time of the procedure.
- Known coagulopathy or use of anticoagulant therapy that cannot be safely discontinued prior to surgery.
- Pregnant or breastfeeding subjects.
- Body mass index (BMI) outside the range of 20-35 kg/m², inclusive.
- Inadequate adipose tissue volume or distribution to permit paired sample collection from contralateral or anatomically matched areas.
- Participation in another interventional clinical study that, in the opinion of the investigator, could interfere with study endpoints.
- Any condition that, in the opinion of the investigator, would make the subject unsuitable for participation or could confound study results.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Ciencia básica
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Ninguno (etiqueta abierta)
Número de brazos
Armas e Intervenciones
Grupo de participantes/brazoGrupo de participantes/brazo |
Intervención / TratamientoIntervención / Tratamiento |
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Comparador activo: Ultrasound-Assisted Liposuction Comparison
AYON ultrasound-assisted liposuction (UAL) is compared with VASER ultrasound-assisted liposuction using paired adipose tissue samples collected from anatomically matched treatment areas.
The primary outcome is the paired difference in adipocyte viability, with additional evaluation of adipose tissue characteristics.
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Ultrasound-assisted liposuction using the AYON UAL system.
In this arm, AYON UAL is compared with VASER ultrasound-assisted liposuction using paired adipose tissue samples collected from anatomically matched treatment areas.
Study-specific UAL settings and treatment parameters are defined by the protocol.
Otros nombres:
Ultrasound-assisted liposuction using the VASER system.
In this arm, VASER is compared with AYON ultrasound-assisted liposuction using paired adipose tissue samples collected from anatomically matched treatment areas.
Study-specific UAL settings and treatment parameters are defined by the protocol.
Otros nombres:
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Comparador activo: Aspiration Modality Comparison
AYON power-assisted liposuction (PL) using a peristaltic pump is compared with vacuum aspiration using paired adipose tissue samples collected from anatomically matched treatment areas.
The primary outcome is the paired difference in adipocyte viability, with additional exploratory evaluation of adipose tissue characteristics.
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Power-assisted liposuction using the AYON PL system with a peristaltic pump.
In this arm, the peristaltic pump aspiration modality is compared with vacuum aspiration using paired adipose tissue samples collected from anatomically matched treatment areas.
Otros nombres:
Vacuum aspiration used for adipose tissue harvest in the power-assisted liposuction comparison.
In this arm, vacuum aspiration is compared with AYON power-assisted liposuction using a peristaltic pump through paired adipose tissue samples collected from anatomically matched treatment areas.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Paired Difference in Adipocyte Viability Between AYON and VASER
Periodo de tiempo: Day 1
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Adipocyte viability (%) will be assessed using membrane integrity (live/dead) analysis by Trypan Blue exclusion.
The primary analysis will evaluate the paired difference in adipocyte viability between AYON ultrasound-assisted liposuction and VASER across paired adipose tissue samples.
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Day 1
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Paired Difference in Adipocyte Viability Between Vacuum and Peristaltic Pump Aspiration
Periodo de tiempo: Day 1
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Adipocyte viability (%) will be assessed using membrane integrity (live/dead) analysis by Trypan Blue exclusion.
The primary analysis will evaluate the paired difference in adipocyte viability between vacuum and peristaltic pump aspiration across paired adipose tissue samples in the power-assisted liposuction arm.
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Day 1
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Medidas de resultado secundarias
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Viable adipocyte density (cells/mL)
Periodo de tiempo: Day 1
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Determined by adipocyte counting combined with membrane integrity (live-dead) assessment using Trypan Blue exclusion
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Day 1
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Fat composition analysis
Periodo de tiempo: Day 1
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Quantification of oil, fluid, and viable adipose fractions, as well as free oil fraction
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Day 1
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SVF yield (cells/g fat)
Periodo de tiempo: Day 1
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Determined by enzymatic digestion (e.g., collagenase) of a measured mass of processed adipose tissue, recovery of the stromal vascular fraction pellet by centrifugation, and viable total nucleated cell (TNC) counting
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Day 1
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Metabolic activity
Periodo de tiempo: Day 1
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Resazurin/Alamar Blue assay results
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Day 1
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Aspiration rate (mL/min) (Arm 2 only)
Periodo de tiempo: Day 1
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Calculated as total aspirate volume divided by active aspiration time
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Day 1
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Intraoperative adverse events
Periodo de tiempo: Day 1
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Adverse events occurring during collection of paired adipose tissue samples
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Day 1
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Colaboradores e Investigadores
Patrocinador
Patrocinador
Investigadores
Investigadores
- Investigador principal: Paul Vanek, MD, Mentor Plastic Surgery
Publicaciones y enlaces útiles
Publicaciones Generales
- Coleman SR. Structural fat grafting: more than a permanent filler. Plast Reconstr Surg. 2006 Sep;118(3 Suppl):108S-120S. doi: 10.1097/01.prs.0000234610.81672.e7.
- Shiffman MA, Mirrafati S. Fat transfer techniques: the effect of harvest and transfer methods on adipocyte viability and review of the literature. Dermatol Surg. 2001 Sep;27(9):819-26. doi: 10.1046/j.1524-4725.2001.01062.x.
- Kurita M, Matsumoto D, Shigeura T, Sato K, Gonda K, Harii K, Yoshimura K. Influences of centrifugation on cells and tissues in liposuction aspirates: optimized centrifugation for lipotransfer and cell isolation. Plast Reconstr Surg. 2008 Mar;121(3):1033-1041. doi: 10.1097/01.prs.0000299384.53131.87.
- Pu LL. Mechanisms of Fat Graft Survival. Ann Plast Surg. 2016 Feb;77 Suppl 1:S84-6. doi: 10.1097/SAP.0000000000000730.
- Fontes T, Brandao I, Negrao R, Martins MJ, Monteiro R. Autologous fat grafting: Harvesting techniques. Ann Med Surg (Lond). 2018 Nov 13;36:212-218. doi: 10.1016/j.amsu.2018.11.005. eCollection 2018 Dec.
- Mojallal A, Auxenfans C, Lequeux C, Braye F, Damour O. Influence of negative pressure when harvesting adipose tissue on cell yield of the stromal-vascular fraction. Biomed Mater Eng. 2008;18(4-5):193-7.
- Yoshimura K, Suga H, Eto H. Adipose-derived stem/progenitor cells: roles in adipose tissue remodeling and potential use for soft tissue augmentation. Regen Med. 2009 Mar;4(2):265-73. doi: 10.2217/17460751.4.2.265.
- Molitor M, Travnickova M, Mestak O, Christodoulou P, Sedlar A, Bacakova L, Lucchina S. The Influence of High and Low Negative Pressure Liposuction and Various Harvesting Techniques on the Viability and Function of Harvested Cells-a Systematic Review of Animal and Human Studies. Aesthetic Plast Surg. 2021 Oct;45(5):2379-2394. doi: 10.1007/s00266-021-02249-9. Epub 2021 Apr 19.
- Fisher C, Grahovac TL, Schafer ME, Shippert RD, Marra KG, Rubin JP. Comparison of harvest and processing techniques for fat grafting and adipose stem cell isolation. Plast Reconstr Surg. 2013 Aug;132(2):351-361. doi: 10.1097/PRS.0b013e3182958796.
- Eto H, Suga H, Matsumoto D, Inoue K, Aoi N, Kato H, Araki J, Yoshimura K. Characterization of structure and cellular components of aspirated and excised adipose tissue. Plast Reconstr Surg. 2009 Oct;124(4):1087-1097. doi: 10.1097/PRS.0b013e3181b5a3f1.
- Rohrich RJ, Sorokin ES, Brown SA. In search of improved fat transfer viability: a quantitative analysis of the role of centrifugation and harvest site. Plast Reconstr Surg. 2004 Jan;113(1):391-5; discussion 396-7. doi: 10.1097/01.PRS.0000097293.56504.00.
- Shauly O, Gould DJ, Ghavami A. Fat Grafting: Basic Science, Techniques, and Patient Management. Plast Reconstr Surg Glob Open. 2022 Mar 18;10(3):e3987. doi: 10.1097/GOX.0000000000003987. eCollection 2022 Mar.
- Ruff PG 4th, Garcia O Jr, Nykiel MJ, Galanis CJ. Consensus-based Recommendations for Vibration Amplification of Sound Energy at Resonance Ultrasound-assisted Liposuction. Plast Reconstr Surg Glob Open. 2023 Jul 11;11(7):e5110. doi: 10.1097/GOX.0000000000005110. eCollection 2023 Jul.
- Cimino WW. Ultrasonic surgery: power quantification and efficiency optimization. Aesthet Surg J. 2001 May;21(3):233-41. doi: 10.1067/maj.2001.116006.
- Kloehn RA. Liposuction With "Sonic Sculpture": Six Years' Experience With More Than 600 Patients. Aesthetic Surgery Journal. 1996/01/01/ 1996;16(2):123-128
- Beckenstein MS, Grotting JC. Ultrasound-assisted lipectomy using the solid probe: a retrospective review of 100 consecutive cases. Plast Reconstr Surg. 2000 May;105(6):2161-74; discussion 2175-9. doi: 10.1097/00006534-200005000-00041.
- Lawrence N, Coleman WP 3rd. The biologic basis of ultrasonic liposuction. Dermatol Surg. 1997 Dec;23(12):1197-200. doi: 10.1111/j.1524-4725.1997.tb00474.x.
- Garcia O. Ultrasound-Assisted Liposuction Current Concepts and Techniques: Current Concepts and Techniques. 2020.
- Jewell ML. Ultrasonic-Assisted Liposuction: Introduction and Historic Perspectives. In: Garcia Jr O, ed. Ultrasound-Assisted Liposuction: Current Concepts and Techniques; Springer International Publishing date 2020; pages 3-8.
- Jewell ML, Fodor PB, de Souza Pinto EB, Al Shammari MA. Clinical application of VASER--assisted lipoplasty: a pilot clinical study. Aesthet Surg J. 2002 Mar;22(2):131-46. doi: 10.1067/maj.2002.123377.
- Chang CC, Commons GW. A comparison of various ultrasound technologies. Clin Plast Surg. 1999 Apr;26(2):261-8; viii.
- Serdev N. Ultrasound Assisted Liposculpture UAL: A Simplified Safe Body Sculpturing and Aesthetic Beautification Technique. 2011.
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Inicio del estudio
Finalización primaria (Estimado)
Finalización primaria
Finalización del estudio (Estimado)
Finalización del estudio
Fechas de registro del estudio
Enviado por primera vez
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Publicado por primera vez
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización publicada
Última actualización enviada que cumplió con los criterios de control de calidad
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
Otros números de identificación del estudio
- APX-AY-26-02
Plan de datos de participantes individuales (IPD)
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Descripción del plan IPD
Información sobre medicamentos y dispositivos, documentos del estudio
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