Prótese vascular derivada do látex

Brandão, Marcelo Luiz Lima; Netto, Joaquim Coutinho; Thomazini, José Antônio; Lachat, João José; Muglia, Valdair Francisco; Piccinato, Carlos Eli

doi:10.1590/s1677-54492007000200007

Cited by 22 publications

(17 citation statements)

References 16 publications

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“…In skull fractures in rats, the results were similar and the researchers believe that new investigations indicate its use in osteoporosis, odontology and facial bone reconstruction [11]. In [12], they developed a new microperforated vascular prosthesis model, made of tissue covered with a compound derived from rubber tree natural latex (Heveabrasiliensis) and used an expanded a polytetrafluoroethylene prosthesis as control in the contralateral pelvic limb in the same animal. The study was done applying two prostheses in 15 dogs.…”

Section: Introductionmentioning

confidence: 84%

Prosthesis for Flow Control in the Esophagus as a New Technique for the Treatment of Obesity

Rosa¹,

Rocha²,

Carvalho³

2013

Practical Applications in Biomedical Engineering

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Section: Introductionmentioning

confidence: 84%

Prosthesis for Flow Control in the Esophagus as a New Technique for the Treatment of Obesity

Rosa¹,

Rocha²,

Carvalho³

2013

Practical Applications in Biomedical Engineering

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“…growth of the latex in a study with the use of vascular fabric and drilled latex prostheses into arteries of dogs 2 . Another study used the latex membrane with 0.1% of polylysine in the perineal herniorrhaphy of dogs allowing the occlusion of the hernial ring with granulation during tissue formation and subsequent membrane removal.…”

Section: It Was Demonstrated Biocompatibility and Endotelialmentioning

confidence: 99%

Evaluation of wound healing treated with latex derived from rubber trees and Aloe Vera extract in rats

et al. 2016

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PURPOSE:To compare the use of latex derivative and Aloe vera extract to wound healing. METHODS:Twenty one rats were randomly divided into three groups and each one had a wound made by incision. The treatment consisted in: derivative of latex (GL), Aloe vera extract (GA) and saline solution (GC). The wound area was measured on the 7th, 14th and 21st days and macroscopic and microscopic evaluation were done. RESULTS:The comparison between the measurements of the wounds presented statistical difference in GC and GA from the 7th day of evaluation and GL from the 14th day. The extent of the wound was significantly smaller by the 7th day in GL. Histologically, in GL, the neovascularization was significant on the 7th, 14th and 21st days. On the 21st day the scar was large and little mature. In GA and GC, the findings were similar on the 7th, 14th and 21st days with a slight better organization of skin and collagen on the 21st in GA.CONCLUSIONS: Statistical analysis did not allow for the definition of the best topical agent. The latex had the highest angiogenesis, but a possible foreign body granuloma. Aloe vera has revealed a healing process adequated temporally in histology.

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“…Matrix preparation followed a previously published technique (8,9). The animals were anesthetized with an intramuscular injection of ketamine (35 mg/kg) and xylazine (5 mg/kg).…”

Section: Membrane Preparation and Surgical Techniquementioning

confidence: 99%

“…Previous experimental studies with the natural latex biomembrane have proved that it is a biodegradable material of easy preparation and handling, encouraging tissue neoformation (8,9). On this basis, we were interested in investigating collagen development and angiogenesis using this latex graft.…”

Section: Introductionmentioning

confidence: 99%

Expression of VEGF and collagen using a latex biomembrane as bladder replacement in rabbits

et al. 2012

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ARTIcLE INFO _________________________________________________________ ___________________Objective: To investigate the VEGF expression and collagen deposition using a latex biomembrane as bladder replacement in rabbits. Materials and Methods: After partial cystectomy, a patch of a non-vulcanized latex biomembrane (2 x 2 cm) was sewn to the bladder of rabbits with 5/0 monofilament polydioxanone sulfate sutures in a watertight manner. Groups of 5 animals were killed at 15, 45 and 90 days after surgery and the bladder was removed. Sections of 5µm were cut and stained with picrosirius-red in order to estimate the amount of extracellular matrix in the graft. To confirm the presence of VEGF in tissues, protein expression was determined by immunohistochemistry. Results: No death, urinary leakage or graft extrusion occurred in any group. All bladders showed a spherical shape. A progressive reduction in the amount of collagen occurred in the graft area and was negatively and linearly correlated with time (p < 0.001). VEGF expression was higher in grafted areas when compared to controls at 15 and 45 days after surgery and decreased with time (p < 0.001). Conclusion:The latex biomembrane as a matrix for partial bladder replacement in rabbits promotes temporary collagen deposition and stimulates the angiogenic process.

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Prótese vascular derivada do látex

Cited by 22 publications

References 16 publications

Prosthesis for Flow Control in the Esophagus as a New Technique for the Treatment of Obesity

Prosthesis for Flow Control in the Esophagus as a New Technique for the Treatment of Obesity

Evaluation of wound healing treated with latex derived from rubber trees and Aloe Vera extract in rats

Expression of VEGF and collagen using a latex biomembrane as bladder replacement in rabbits

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