Minor micro-rheological alterations in the presence of an artificial saphenous arteriovenous shunt, as an arteriovenous malformation model in the rat.
Clin Hemorheol Microcirc
; 87(1): 27-37, 2024.
Article
em En
| MEDLINE
| ID: mdl-38250764
ABSTRACT
BACKGROUND:
Arteriovenous malformations (AVMs) are vascular anomalies characterized by abnormal shunting between arteries and veins. The progression of the AVMs and their hemodynamic and rheological relations are poorly studied, and there is a lack of a feasible experimental model.OBJECTIVE:
To establish a model that cause only minimal micro-rheological alterations, compared to other AV models.METHODS:
Sixteen female Sprague Dawley rats were randomly divided into control and AVM groups. End-to-end anastomoses were created between the saphenous veins and arteries to mimic AVM nidus. Hematological and hemorheological parameters were analyzed before surgery and on the 1st, 3rd, 5th, 7th, 9th, and 12th postoperative weeks.RESULTS:
Compared to sham-operated Control group the AVM group did not show important alterations in hematological parameters nor in erythrocyte aggregation and deformability. However, slightly increased aggregation and moderately decreased deformability values were found, without significant differences. The changes normalized by the 12th postoperative week.CONCLUSIONS:
The presented rat model of a small-caliber AVM created on saphenous vessels does not cause significant micro-rheological changes. The alterations found were most likely related to the acute phase reactions and not to the presence of a small-caliber shunt. The model seems to be suitable for further studies of AVM progression.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Malformações Arteriovenosas
/
Ratos Sprague-Dawley
/
Modelos Animais de Doenças
Limite:
Animals
Idioma:
En
Revista:
Clin Hemorheol Microcirc
Assunto da revista:
ANGIOLOGIA
/
HEMATOLOGIA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Hungria
País de publicação:
Holanda