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Autologous porcine VRAM flap model for VCA research.
Front Transplant
December 2024
Department of Surgery, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, United States.
Introduction: As research advances in vascularized composite allotransplantation (VCA), large animal models are essential for translational studies related to immune rejection and graft survival. However, procurement of large flaps can cause significant defects, complicating wound closure and increasing postoperative risks. This study details the surgical techniques and outcomes of autologous vertical rectus abdominis myocutaneous (VRAM) flap transplantation and neck flap isolation with induced ischemia in a swine model.
View Article and Find Full Text PDFDynamic changes in the skin transcriptome for the melanin pigmentation in embryonic chickens.
Poult Sci
August 2024
College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China. Electronic address:
Dermal hyperpigmentation stands out among the various skin pigmentation phenotypes in chickens, where most other pigmentation variants affect feather color and patterning predominantly. Despite numerous black chicken breeds worldwide, only a select few exhibit comprehensive black pigmentation, which encompasses the skin, meat, flesh, and bones. The process of skin melanin pigmentation is intricate and develops successively.
View Article and Find Full Text PDFInvestigating the Relationship Between the Emulsification Parameters and Physical-Chemical Properties of Poly(D,L-lactic acid) Particles for Dermal Fillers.
Polymers (Basel)
December 2024
Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan.
Poly(L-lactic acid) (PLLA) and poly(D,L-lactic acid) (PDLLA) particles have been applied as dermal fillers for soft-tissue augmentation because they can induce foreign-body reactions, resulting in fibroblast proliferation and collagen formation. Although PLLA and PDLLA fillers are safe and biocompatible, clinical complications such as nodules and granulomas have been reported, possibly due to incomplete reconstitution. PDLLA particles were prepared via emulsification in this study, and three stirring speeds were investigated when adding PDLLA into carboxymethyl cellulose solution.
View Article and Find Full Text PDFComparison of the Effect of Delay Phenomenon and Quercetin Application on the Viability of Dorsal Skin Island Flaps in Rats: An Experimental Study.
Ann Plast Surg
December 2024
From the Department of Plastic, Reconstructive and Aesthetic Surgery, Karadeniz Technical University Faculty of Medicine, Trabzon, Turkey.
Background: Surgical delay is any surgical intervention performed 7-14 days before flap elevation, separating part of flap from its vascular bed and aiming to decrease flap necrosis. However, delay surgery needs to be planned and performed as a separate surgical operation. Quercetin is a flavonoid with anti-inflammatory, and vasodilator effects.
View Article and Find Full Text PDFA new species of the fossil pufferfish genus †Archaeotetraodon (Tetraodontidae) from the Middle Miocene of the North Caucasus, Russia.
Zootaxa
June 2024
National Museum of Natural History; Department of Paleobiology; Smithsonian Institution; Washington; D.C. 20560-0160; U.S.A..
The fossil puffer fish genus †Archaeotetraodon Tyler & Bannikov, 1994 is unique among the Tetraodontidae in having the upright central spinule of the dermal scale plates bifid rather than singular and undivided. Six species of this genus have previously been described variously from the Oligocene and Miocene of Russia, Italy, Algeria, and Ukraine. Described herein is a seventh species of this genus, †Archaeotetraodon bemisae sp.
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