ABSTRACT Introduction. Post-bariatric plastic surgery has seen a significant increase in recent years, particularly for the correction of breast ptosis, one of the main aesthetic consequences of massive weight loss (MWL). The morphological and structural characteristics of breast skin in this context are poorly investigated and may contribute to the variability of surgical outcomes. The present study aims to characterize the histo-morphometric changes of breast skin following MWL. Materials and Methods. Breast skin samples were collected from 17 subjects, divided into two groups: Group A (n=12), women with MWL following bariatric surgery; Group B (n=5), individuals without a history of pathological obesity (control group). The samples underwent histological, morphometric, immunohistochemical, and biochemical analyses to assess skin thickness, content of elastic fibers, collagen fibers, glycosaminoglycans (GAGs), components of the basement membrane (laminin and collagen IV), and tissue vascularization. Results. Group A showed a significant reduction in skin thickness and an increased density of elastic fibers compared to controls. No significant differences were found in the content of collagen fibers, GAGs, or in the expression of basement membrane markers. However, vascular structure analysis revealed increased vascularization in post-MWL breast skin, indicative of alterations in the microcirculatory component. Conclusions. The collected evidence indicates that post-MWL breast skin presents selective alterations involving thickness, elastic fiber content, and vascularization, with potential implications for tissue quality and responsiveness to corrective surgery. These findings expand current knowledge on the characteristics of breast skin following MWL and highlight the need for further research to clarify their impact on clinical outcomes in mastopexy procedures.
SOMMARIO Introduzione. La chirurgia plastica post-bariatrica ha registrato un incremento significativo negli ultimi anni, in particolare per il trattamento della ptosi mammaria, una delle principali conseguenze estetiche della perdita di peso massiva (Massive Weight Loss, MWL). Le caratteristiche morfologiche e strutturali della cute mammaria in questo contesto sono poco indagate e potrebbero contribuire alla variabilità dell’outcome chirurgico. Il presente studio si propone quindi di caratterizzare le modificazioni isto-morfometriche della cute mammaria dopo MWL. Materiali e Metodi. Sono stati prelevati campioni di cute mammaria da 17 soggetti, suddivisi in due gruppi: Gruppo A (n=12), donne affette da MWL post-chirurgia bariatrica; Gruppo B (n=5), soggetti senza storia di obesità patologica (controllo). I campioni sono stati sottoposti ad analisi istologiche, morfometriche, immunoistochimiche e biochimiche per valutare spessore cutaneo, contenuto di fibre elastiche, fibre collagene e glicosamminoglicani (GAGs), componenti della membrana basale (laminina e collagene IV) e vascolarizzazione del tessuto. Risultati. Il Gruppo A ha mostrato una riduzione significativa dello spessore cutaneo e un aumento della densità delle fibre elastiche rispetto ai controlli. Non sono emerse differenze significative nel contenuto di fibre collagene e GAGs, né nell’espressione dei marcatori della membrana basale. L’analisi delle strutture vascolari ha invece evidenziato un incremento della vascolarizzazione nella cute mammaria post-MWL, indicativo di una modificata componente microcircolatoria. Conclusioni. Le evidenze raccolte mostrano che la cute mammaria post-MWL presenta alterazioni selettive, che interessano lo spessore, le fibre elastiche e la vascolarizzazione, con potenziali implicazioni sulla composizione tissutale e sulla risposta alla chirurgia correttiva. Tali risultati ampliano le conoscenze sulle caratteristiche della cute mammaria post-MWL e indicano la necessità di ulteriori indagini per chiarirne l’impatto sugli esiti clinici della mastopessi.
Caratteristiche microstrutturali e biomolecolari della cute mammaria in pazienti post-bariatriche dopo Massive Weight Loss
FIN, ELISABETTA
2024/2025
Abstract
ABSTRACT Introduction. Post-bariatric plastic surgery has seen a significant increase in recent years, particularly for the correction of breast ptosis, one of the main aesthetic consequences of massive weight loss (MWL). The morphological and structural characteristics of breast skin in this context are poorly investigated and may contribute to the variability of surgical outcomes. The present study aims to characterize the histo-morphometric changes of breast skin following MWL. Materials and Methods. Breast skin samples were collected from 17 subjects, divided into two groups: Group A (n=12), women with MWL following bariatric surgery; Group B (n=5), individuals without a history of pathological obesity (control group). The samples underwent histological, morphometric, immunohistochemical, and biochemical analyses to assess skin thickness, content of elastic fibers, collagen fibers, glycosaminoglycans (GAGs), components of the basement membrane (laminin and collagen IV), and tissue vascularization. Results. Group A showed a significant reduction in skin thickness and an increased density of elastic fibers compared to controls. No significant differences were found in the content of collagen fibers, GAGs, or in the expression of basement membrane markers. However, vascular structure analysis revealed increased vascularization in post-MWL breast skin, indicative of alterations in the microcirculatory component. Conclusions. The collected evidence indicates that post-MWL breast skin presents selective alterations involving thickness, elastic fiber content, and vascularization, with potential implications for tissue quality and responsiveness to corrective surgery. These findings expand current knowledge on the characteristics of breast skin following MWL and highlight the need for further research to clarify their impact on clinical outcomes in mastopexy procedures.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/93889