Publications by authors named "Chaput B"

Background: Reconstruction of the axillary fossa represents a surgical challenge given the functional implications for mobility of the upper limb. The posterior brachial flap is a solution of choice for this indication, providing fine and functional local reconstruction, but little is known about its perforasome. This study aimed to identify the location of the perforator, analyze perfusion flow, and link vessel distribution, and propose an aesthetic refinement to the surgical technique by medializing the skin paddle to conceal aesthetic scarring at the donor site.

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We report on using a pedicled posterior brachial perforator flap to cover a defect of the infraspinous fossa. The first description of the posterior brachial flap came from Masquelet in 1985, and there are very few reports of this flap in the literature, mainly in its pedicled form limited to axillary covers. Scapular soft tissue defect with bone exposure can be covered by several techniques.

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Article Synopsis
  • Skin healing is a multi-phase process involving inflammation, tissue reconstruction, and remodeling, where macrophages play a key role in transitioning from inflammation to repair.
  • Mesenchymal stromal cells derived from adipose tissue (ADSCs) are increasingly utilized for their regenerative properties, aiding in wound healing and providing immunomodulatory benefits.
  • Direct application of ADSCs and macrophages to wounds can face challenges like cell viability; hence, using biomaterials as scaffolds to enhance cell survival and function is being explored for better skin regeneration outcomes.
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  • Microsurgical free tissue transfer is critical for repairing significant bone or soft tissue injuries but is often seen as unfeasible in low- and middle-income countries due to the need for specialized training and resources.
  • A program in Cambodia, supported by non-governmental organizations, successfully performed 56 free flap surgeries from 2004 to 2023, training local surgeons while treating various reconstruction needs.
  • Despite facing a higher failure rate compared to high-income countries, the majority (83.3%) of patients showed improvement or complete resolution of their original issues, highlighting the potential for better outcomes with targeted solutions in low-resource settings.*
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  • Scientists are creating new ways to develop drugs and vaccines more effectively and safely before testing them on people.
  • A new system has been created to study how human skin reacts to immunogenic drugs, allowing researchers to see how the immune cells respond in detail.
  • The study looked at how the COVID-19 vaccine works in the body, showing how it affects different immune cells and helping to improve future vaccines and drug methods.
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Background: The advent of propeller flaps has permitted new and less invasive coverage solutions for thoracic defects compared to conventional flaps. Through a retrospective analysis of our cases, we would like to show the advantages of the internal mammary artery perforator (IMAP) flap for anterior chest wall reconstruction.

Methods: We included patients who underwent anterior chest wall reconstruction with an IMAP propeller flap in the Toulouse University Hospital's plastic surgery department from January 2019 to December 2022.

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Background: This phase II trial sought to be the first of its kind to estimate the success rate of endermology in reducing breast cancer-related lymphedema.

Patients And Methods: ELOCS is a French, monocentric, randomized, open-label phase II trial. Patients were randomized to receive the following over a 5-day treatment period: standard intensive decongestant treatment (IDT) (bandages and manual lymphatic drainage MLD) (group 1); IDT including bandages, MLD, and Cellu M6 (group 2); and IDT including bandages and Cellu M6 (Group 3).

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Purpose: The tensor fasciae latae (TFL) muscle is supplied by the lateral femoral circumflex artery (LCFA), arising from the deep femoral artery. However, it has been noted that there is also a consistent vascular anastomotic network. The aim of this study was to describe the accessory vascularization of the TFL muscle through a descriptive anatomical study, in order to hypothesize the feasibility of harvesting a TFL flap in the event of an injury to the main pedicle.

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Breast augmentation in the case of chest wall deformity can be challenging. It is essential to treat the two problematics separately, and not to attempt compensation for asymmetry with vastly different breast implants. With this work, we wish to highlight the approach based on the use of custom-made 3D implants, enabling optimal correction of thoracic deformity.

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The treatment of postburn hypopigmentation was primarily surgical before the advent of new technologies. Medical devices and therapies are emerging to manage scar sequelae that can be disfiguring and associated with severe psychosocial impact. These innovations have been poorly investigated for hypopigmentation, but they represent a real hope.

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Secondary lymphedema (LD) corresponds to a severe lymphatic dysfunction leading to the accumulation of fluid and fibrotic adipose tissue in a limb. Here, we identified apelin (APLN) as a powerful molecule for regenerating lymphatic function in LD. We identified the loss of APLN expression in the lymphedematous arm compared to the normal arm in patients.

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Lymphedema (LD) is characterized by the accumulation of interstitial fluid, lipids and inflammatory cell infiltrate in the limb. Here, we find that LD tissues from women who developed LD after breast cancer exhibit an inflamed gene expression profile. Lipidomic analysis reveals decrease in specialized pro-resolving mediators (SPM) generated by the 15-lipoxygenase (15-LO) in LD.

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Obesity and type 2 diabetes are becoming a global sociobiomedical burden. Beige adipocytes are emerging as key inducible actors and putative relevant therapeutic targets for improving metabolic health. However, in vitro models of human beige adipose tissue are currently lacking and hinder research into this cell type and biotherapy development.

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Introduction: Since 2001, acellular dermal matrices have been increasingly used in immediate breast reconstruction (IBR) because they allow for the placement of the ideal-sized definitive implant in one step. They are used in both retropectoral and prepectoral prosthetic breast reconstructions. The aim of this study was to evaluate the impact of dermal matrices on the quality of life and on complications.

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Human-adipose-tissue-derived mesenchymal stromal cells (AD-MSCs) are currently being tested as autologous-cell-based therapies for use in tissue healing and regeneration. Recent studies have also demonstrated that AD-MSC-derived exosomes contribute to tissue repair and peripheral nerve regeneration. Subcutaneous abdominal adipose tissue (AAT) is divided into two layers: the superficial layer (sAAT) and the deep layer (dAAT).

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Routine clinical assays, such as conventional immunohistochemistry, often fail to resolve the regional heterogeneity of complex inflammatory skin conditions. We introduce MANTIS (Multiplex Annotated Tissue Imaging System), a flexible analytic pipeline compatible with routine practice, specifically designed for spatially resolved immune phenotyping of the skin in experimental or clinical samples. On the basis of phenotype attribution matrices coupled to α-shape algorithms, MANTIS projects a representative digital immune landscape while enabling automated detection of major inflammatory clusters and concomitant single-cell data quantification of biomarkers.

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Background: This study was conducted to assess the impact of abdominoplasty and lower body lift surgery following massive weight loss on both the general quality of life and the sexual life of patients.

Methods: The authors performed a multicenter prospective study on the quality of life after massive weight loss using three scoring questionnaires: The Short-Form 36 questionnaire, the Female Sexual Function Index questionnaire, and the Moorehead-Ardelt Quality of Life Questionnaire. Seventy-two patients who underwent lower body lift and 57 patients who underwent abdominoplasty in three centers with preoperative and postoperative evaluation were included.

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Moderate soft-tissue defects need stable coverage, ideally with tissue of similar characteristics and low donor site morbidity. We propose a simple technique for the coverage of moderate skin defects in the limbs. It allows intraoperative transformation of a propeller perforator flap (PPF) into a keystone design perforator flap (KDPF) in cases of unsatisfying perforator vessel or in cases of unpredictable intraoperative events.

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Background: Adaptation of fat depots to change in fuel availability is critical for metabolic flexibility and cardiometabolic health. The mechanisms responsible for fat depot-specific lipid sensing and shuttling remain elusive. Adipose tissue microvascular endothelial cells (AT-EC) regulates bidirectional fatty acid fluxes depending on fed or fasted state.

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Article Synopsis
  • The study focuses on optimizing a platelet-lysate-based fibrin hydrogel (PLFH) to serve as a carrier for adipose-derived mesenchymal stromal cells (ASC) to help regenerate tissue lesions.
  • Researchers tested the biomechanical properties and cell viability of PLFH both in vitro and in vivo, finding that it supports ASC migration, growth, and viability.
  • Comprehensive safety assessments in mice showed that PLFH/ASC combinations are safe, biodegradable, and do not harm non-target tissues, indicating potential for future clinical use in human therapies.
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Fibro-adipogenic progenitors (FAPs) play a crucial role in skeletal muscle regeneration, as they generate a favorable niche that allows satellite cells to perform efficient muscle regeneration. After muscle injury, FAP content increases rapidly within the injured muscle, the origin of which has been attributed to their proliferation within the muscle itself. However, recent single-cell RNAseq approaches have revealed phenotype and functional heterogeneity in FAPs, raising the question of how this differentiation of regenerative subtypes occurs.

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Introduction: Limb-sparing surgery combined with radiation has become the standard treatment for soft tissue sarcomas. Despite the many advantages of reconstruction procedures, such as muscle-sparing flap and local reconstruction, the use of pedicled perforator flaps remains non-consensual due to doubts about their reliability when associated with radiotherapy. This study evaluated their surgical reliability in reconstructive surgery for limb and trunk soft tissue sarcomas, in terms of healing time, wound disorders, and postoperative complications, regardless of radiation timing.

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Introduction: Percutaneous screw fixation has recently gained popularity as an alternative to conservative treatment to avoid prolonged immobilization. The placement of a screw in the central axis of the scaphoid has been shown to be biomechanically superior to its eccentricity. Still, it poses difficulties in performing percutaneous screw fixation via both palmar and dorsal approaches.

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Nanofat grafting (NG) is a simple and cost-effective method of lipoaspirates with inter-syringe passages, to produce stromal vascular fraction (SVF) and isolate adipose-derived stem cells (ASCs). This represents a tremendous interest in the future clinical needs of tissue engineering. In this study, we optimized the NG technique to increase the yield of ASC extractions.

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