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Within-Subject Comparison of Adipose Tissue Viability Following Liposuction

2026年9月9日 更新者:Apyx Medical

A Prospective Within-Subject Comparison of Adipose Tissue Viability and Cellular Characteristics Following Ultrasound- and Power-Assisted Liposuction and Aspiration Modalities

This study will evaluate and compare the quality of adipose (fat) tissue harvested using different liposuction technologies and aspiration methods. Each participant will serve as their own control, with paired fat samples collected from anatomically matched treatment areas. The study will evaluate adipocyte viability and other characteristics of the harvested tissue, including viable adipocyte density, stromal vascular fraction, metabolic activity, and fat composition. The goal of the study is to better understand how different liposuction technologies and aspiration methods affect the quality and characteristics of harvested adipose tissue.

調査の概要

状態

募集

条件

介入・治療

詳細な説明

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.

研究の種類

介入

入学 (推定)

30

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

研究場所

    • Ohio
      • Concord、Ohio、アメリカ、44077
        • 募集
        • Mentor Plastic Surgery
        • コンタクト:
        • コンタクト:
        • 主任研究者:
          • Paul Vanek, MD
    • Washington
      • Olympia、Washington、アメリカ、98506
        • 募集
        • Pearl Plastic Surgery
        • コンタクト:
        • コンタクト:
        • 主任研究者:
          • Chris Nichols, MD
        • 主任研究者:
          • Dan Albershardt, MD
        • 副調査官:
          • Owen Johnson, MD

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

  • 大人
  • 高齢者

健康ボランティアの受け入れ

はい

説明

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.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

  • 主な目的:基礎科学
  • 割り当て:ランダム化
  • 介入モデル:並列代入
  • マスキング:なし(オープンラベル)

武器と介入

参加者グループ / アーム
介入・治療
アクティブコンパレータ: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.
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.
他の名前:
  • AYON UAL System
  • AYON
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.
他の名前:
  • VASER
アクティブコンパレータ: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.
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.
他の名前:
  • AYON PL
  • AYON PL System
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.

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
Paired Difference in Adipocyte Viability Between AYON and VASER
時間枠:Day 1
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.
Day 1
Paired Difference in Adipocyte Viability Between Vacuum and Peristaltic Pump Aspiration
時間枠:Day 1
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.
Day 1

二次結果の測定

結果測定
メジャーの説明
時間枠
Viable adipocyte density (cells/mL)
時間枠:Day 1
Determined by adipocyte counting combined with membrane integrity (live-dead) assessment using Trypan Blue exclusion
Day 1
Fat composition analysis
時間枠:Day 1
Quantification of oil, fluid, and viable adipose fractions, as well as free oil fraction
Day 1
SVF yield (cells/g fat)
時間枠:Day 1
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
Day 1
Metabolic activity
時間枠:Day 1
Resazurin/Alamar Blue assay results
Day 1
Aspiration rate (mL/min) (Arm 2 only)
時間枠:Day 1
Calculated as total aspirate volume divided by active aspiration time
Day 1
Intraoperative adverse events
時間枠:Day 1
Adverse events occurring during collection of paired adipose tissue samples
Day 1

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

捜査官

  • 主任研究者:Paul Vanek, MD、Mentor Plastic Surgery

出版物と役立つリンク

研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。

一般刊行物

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2026年8月6日

一次修了 (推定)

2026年12月31日

研究の完了 (推定)

2027年4月30日

試験登録日

最初に提出

2026年9月3日

QC基準を満たした最初の提出物

2026年9月9日

最初の投稿 (実際)

2026年9月15日

学習記録の更新

投稿された最後の更新 (実際)

2026年9月15日

QC基準を満たした最後の更新が送信されました

2026年9月9日

最終確認日

2026年9月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • APX-AY-26-02

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

いいえ

IPD プランの説明

Individual participant data will not be shared with other researchers. Study results will be reported in aggregate.

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

いいえ

米国FDA規制機器製品の研究

はい

米国で製造され、米国から輸出された製品。

いいえ

この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。