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Neither expression of VEGF-C/D nor lymph vessel density supports lymphatic invasion as the mechanism responsible for local spread of recurrent salivary pleomorphic adenoma

R Salzman, I Starek, L Kucerova, A Skalova, J Hoza

. 2014 ; 464 (1) : 29-34.

Jazyk angličtina Země Německo

Perzistentní odkaz   https://www.medvik.cz/link/bmc19041218

Grantová podpora
NT13701 MZ0 CEP - Centrální evidence projektů

Digitální knihovna NLK
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NLK ProQuest Central od 2003-01-01 do Před 1 rokem
Medline Complete (EBSCOhost) od 2011-01-01 do Před 1 rokem
Nursing & Allied Health Database (ProQuest) od 2003-01-01 do Před 1 rokem
Health & Medicine (ProQuest) od 2003-01-01 do Před 1 rokem

Recent research suggests that multinodular recurrent pleomorphic adenoma (PA) might result from cell migration through lymphatics. Lymphangiogenesis in malignancies is mediated by vascular endothelial growth factors C and D (VEGF-C/D). We studied the expression of VEGF-C/D in PA by immunohistochemistry as well as lymphatic vessel density (LVD). In 6 non-recurrent, 4 primary-to-recur, and 10 recurrent PAs, VEGF-C/D expression was assessed by immunohistochemistry. Staining was scored in terms of staining intensity (0 = absent to 3 = strong), and the percentage of positive tumor cells (scored as 0 (0-19 %), 1 (20-39 %), 2 (40-50 %), and 3 (60-100 %)) and a sum score were calculated. Intra- and peritumoral LVD was assessed by counting of LV after immunostaining, using the D2-40 antibody. All but one sample were VEGF-C negative. The differences in VEGF-D expression between non-recurrent, primary-to-recur, and recurrent PAs were not significant (p>0.05). VEGF-D expression did not correlate with peritumoral LVD (p>0.05). Our study revealed a significant difference between intra- and peritumoral LVD values when comparing individual and all sample groups (p=0.01). The lack of VEGF-C expression and of significant differences in VEGF-D expression and peritumoral LVD between patients with non-recurrent, primary-to-recur, and recurrent PAs does not support the lymphangiogenic local spread hypothesis

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$a Recent research suggests that multinodular recurrent pleomorphic adenoma (PA) might result from cell migration through lymphatics. Lymphangiogenesis in malignancies is mediated by vascular endothelial growth factors C and D (VEGF-C/D). We studied the expression of VEGF-C/D in PA by immunohistochemistry as well as lymphatic vessel density (LVD). In 6 non-recurrent, 4 primary-to-recur, and 10 recurrent PAs, VEGF-C/D expression was assessed by immunohistochemistry. Staining was scored in terms of staining intensity (0 = absent to 3 = strong), and the percentage of positive tumor cells (scored as 0 (0-19 %), 1 (20-39 %), 2 (40-50 %), and 3 (60-100 %)) and a sum score were calculated. Intra- and peritumoral LVD was assessed by counting of LV after immunostaining, using the D2-40 antibody. All but one sample were VEGF-C negative. The differences in VEGF-D expression between non-recurrent, primary-to-recur, and recurrent PAs were not significant (p>0.05). VEGF-D expression did not correlate with peritumoral LVD (p>0.05). Our study revealed a significant difference between intra- and peritumoral LVD values when comparing individual and all sample groups (p=0.01). The lack of VEGF-C expression and of significant differences in VEGF-D expression and peritumoral LVD between patients with non-recurrent, primary-to-recur, and recurrent PAs does not support the lymphangiogenic local spread hypothesis
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