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Platelet-rich plasma PRP vs. absorbable mesh as cruroplasty reinforcement: a study on an animal model.
Minimally Invasive Therapy & Allied Technologies : MITAT 2022 Februrary
BACKGROUND: Reinforcement of posterior cruroplasty has been proposed to minimize the failure of hiatal hernia repair (HHR). The applications of autologous platelet-rich plasma (PRP) and absorbable mesh are barely reported in this area.
AIMS: To analyze local macroscopic and microscopic changes induced by mesh vs. PRP as reinforcement of HHR, using a reliable laparoscopic experimental porcine model.
MATERIAL AND METHODS: This prospective, comparative pilot study was conducted on 14 female pigs, aged four to six months. An iatrogenic hiatal defect was laparoscopically simulated and repaired, reinforced with Bio-A® mesh (group A) or PRP (group B). Specimen retrieval was performed after seven months for histopathological (HP) examination.
RESULTS: No local or general complications were registered, with complete resorption of reinforcements, that determined inflammatory infiltrates with local collagen production and tissue neo-vascularization. Group A had an increased mean chronic inflammation score ( p = .3061), showing significant sclerotic collagenizing process. PRP enhanced angiogenesis, collagenizing, myofibroblast recruitment and tissue ingrowth.
CONCLUSIONS: No residual materials or evidence of anatomical distortion were found. Animal model was safe and reliable. This is the first report of complete absorption of Bio-A® positioned on crural area. HP results suggest the clinical application of PRP in HHR as a promising co-adjuvant to local remodeling and healing. Abbreviations: ASA: American Society of Anesthesiologists; AB: Alcian Blue; PAS: Periodic Acid-Schiff; CP: platelet concentrate; fPC: filtered plasma concentrate; GERD: gastro-esophageal reflux disease; HSA: hiatal surface area; HHR: hiatal hernia repair; HP: histopathological; HH: hiatal hernia; HE: hematoxylin and eosin; HR: hiatus repair alone; HRM: hiatus repair and acellular dermal matrix; NM: Nicolae Manolesccu; LNF: laparoscopic Nissen fundoplication; PC: posterior cruroplasty; PPP: platelet-poor plasma; RP: platelet-rich plasma.
AIMS: To analyze local macroscopic and microscopic changes induced by mesh vs. PRP as reinforcement of HHR, using a reliable laparoscopic experimental porcine model.
MATERIAL AND METHODS: This prospective, comparative pilot study was conducted on 14 female pigs, aged four to six months. An iatrogenic hiatal defect was laparoscopically simulated and repaired, reinforced with Bio-A® mesh (group A) or PRP (group B). Specimen retrieval was performed after seven months for histopathological (HP) examination.
RESULTS: No local or general complications were registered, with complete resorption of reinforcements, that determined inflammatory infiltrates with local collagen production and tissue neo-vascularization. Group A had an increased mean chronic inflammation score ( p = .3061), showing significant sclerotic collagenizing process. PRP enhanced angiogenesis, collagenizing, myofibroblast recruitment and tissue ingrowth.
CONCLUSIONS: No residual materials or evidence of anatomical distortion were found. Animal model was safe and reliable. This is the first report of complete absorption of Bio-A® positioned on crural area. HP results suggest the clinical application of PRP in HHR as a promising co-adjuvant to local remodeling and healing. Abbreviations: ASA: American Society of Anesthesiologists; AB: Alcian Blue; PAS: Periodic Acid-Schiff; CP: platelet concentrate; fPC: filtered plasma concentrate; GERD: gastro-esophageal reflux disease; HSA: hiatal surface area; HHR: hiatal hernia repair; HP: histopathological; HH: hiatal hernia; HE: hematoxylin and eosin; HR: hiatus repair alone; HRM: hiatus repair and acellular dermal matrix; NM: Nicolae Manolesccu; LNF: laparoscopic Nissen fundoplication; PC: posterior cruroplasty; PPP: platelet-poor plasma; RP: platelet-rich plasma.
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