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Phlebology. 2015 Oct;30(9):644-7. doi: 10.1177/0268355514541980. Epub 2014 Jun 27.

Ultrastructure of internal jugular vein defective valves.

Author information

1
Vascular Disease Center, University of Ferrara, Italy Department of Morphology, Surgery, and Experimental Medicine, University of Ferrara, Italy paolozamboni@icloud.com.
2
Department of Morphology, Surgery, and Experimental Medicine, University of Ferrara, Italy.
3
Vascular Disease Center, University of Ferrara, Italy Department of Morphology, Surgery, and Experimental Medicine, University of Ferrara, Italy.
4
Vascular Disease Center, University of Ferrara, Italy Vascular and Endovascular Unit, S. Anna University Hospital, Ferrara, Italy.
5
IRCCS Neurosciences, Bologna, Italy.

Abstract

OBJECTIVES:

To study the ultrastructure of intraluminal defects found in the internal jugular vein by using a scanning electron microscopy.

METHODS:

Using a scanning electron microscopy, intraluminal septa and/or defective valves blocking the flow in the distal internal jugular vein of seven patients were studied together with the adjacent wall and compared with control specimen.

RESULTS:

The internal jugular veins' wall showed a significant derangement of the endothelial layer as compared to controls. Surprisingly, no endothelial cells were found in the defective cusps, and the surface of the structure is covered by a fibro-reticular lamina.

CONCLUSIONS:

Although the lack of endothelial cells in the internal jugular vein intraluminal obstacles is a further abnormality found in course of chronic cerebrospinal venous insufficiency, our investigation cannot clarify whether this finding is primary or caused by progressive loss of endothelium in relation to altered haemodynamic forces and/or to a past post-thrombotic/inflammatory remodelling.

KEYWORDS:

CCSVI; Venous valves; endothelial cell; internal jugular vein; intraluminal defects; scanning electron microscopy; truncular venous malformation; ultrastructure

PMID:
24972760
PMCID:
PMC4574083
DOI:
10.1177/0268355514541980
[Indexed for MEDLINE]
Free PMC Article

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