Tissue reaction to three different types of tissue glues in an experimental aorta dissection model: a quantitative approach.
Tissue glues are used during surgical treatment of acute aorta dissection although some glues release toxic products and thus alter the histological structure of the vessel wall. The aim of our study was to use a porcine experimental model of infrarenal aorta dissection to compare histological changes of the vessel wall 1, 6 and 12 months after application of BioGlue, Gelatin-resorcin-formaldehyde (GRF) glue and Tissucol. For quantification, stereological methods were used. All types of glue caused stenosis, GRF most and Tissucol least severely. With increasing postoperative survival time, stenosis was again reduced. Elastine length density decreased with increasing survival time in Control as well as in all Experimental groups. The immunohistochemical phenotype of vascular smooth muscle cells was similar in Tissucol and Control samples. In GRF samples, actin, desmin and vimentin expression changed most severely. Similarly, number and distribution of vasa vasorum in the aortic wall was altered most severely in GRF samples. They tended to return to normal with increasing postoperative survival time, but at a slow rate in the GRF samples. It can be concluded that GRF causes the most severe histopathological changes within the treated aorta, which could be a reason for late failures of dissection surgery. However, glue handling and adhesive properties have to be taken into account, too, when certain glue is chosen for surgical intervention. Increased inflammation and vascularisation might even stabilise the aortic wall. Long-term experimental studies would be helpful to assess healing processes after initial disorganisation of the aortic wall structure.
Witter
Kirsti
K
Department of Pathobiology, Institute of Histology and Embryology, University of Veterinary Medicine Vienna, Wien, Austria.
Tonar
Zbynek
Z
Matejka
Vít Martin
VM
Martinca
Tomás
T
Jonák
Michael
M
Rokosný
Slavomír
S
Pirk
Jan
J
D000818:Animals; D001013:Aorta, Thoracic / Q000166:cytology / Q000187:drug effects* / Q000601:surgery*; D004338:Drug Combinations; D005260:Female; D015718:Fibrin Tissue Adhesive / Q000009:adverse effects* / Q000737:chemistry; D005557:Formaldehyde / Q000009:adverse effects* / Q000737:chemistry; D005780:Gelatin / Q000009:adverse effects* / Q000737:chemistry; D008297:Male; D023421:Models, Animal; D011506:Proteins / Q000009:adverse effects* / Q000737:chemistry; D012118:Resorcinols / Q000009:adverse effects* / Q000737:chemistry; D013552:Swine; D014014:Tissue Adhesives / Q000009:adverse effects* / Q000737:chemistry
C472676:Bio-glue; D004338:Drug Combinations; D015718:Fibrin Tissue Adhesive; D011506:Proteins; D012118:Resorcinols; D014014:Tissue Adhesives; C027813:gelatin-resorcinol-formaldehyde tissue adhesive; D005557:Formaldehyde; D005780:Gelatin