Vascular Endothelial Growth Factor Insertion/Deletion gene polymorphism in patients with type 2 diabetes and diabetic peripheral polyneuropathy
The aim of this work was to study for the first time in Romania Insertion/Deletion (I/D) polymorphism of the Vascular Endothelial Growth Factor (VEGF) gene in a group of patients with established type 2 diabetes mellitus (DM) and diabetic peripheral neuropathy (DPN) compared with a control group. Th...
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Veröffentlicht in: | Revista română de medicină de laborator 2014-06, Vol.22 (2), p.165-172 |
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Zusammenfassung: | The aim of this work was to study for the first time in Romania Insertion/Deletion (I/D) polymorphism of the Vascular Endothelial Growth Factor (VEGF) gene in a group of patients with established type 2 diabetes mellitus (DM) and diabetic peripheral neuropathy (DPN) compared with a control group.
This was a case-control study consisting of a group of 84 patients with type 2 DM and DPN, diagnosed by clinical neurological examination and electrophysiological nerve conduction studies and a control group of 90 healthy volunteers. For deoxyribonucleic acid (DNA) isolation, a DNA purification kit from Zymo Research was used. In vitro amplification of DNA sequences was achieved by polymerase chain reaction (PCR). Selective in vitro amplification of a DNA fragment of known sequence is based on the principle of extension of a primer (“primer and PCR amplicon”). DNA fragments were separated by gel electrophoresis. For proper viewing and interpreting of agarose gels Vilber Lourmat system was used. D allele frequency of VEGF was significantly higher in patients with diabetic peripheral neuropathy (53.57%) compared with controls (25%), p=0.0001.
There is a positive association between I/D polymorphism of VEGF gene and the presence of diabetic peripheral polyneuropathy. Our study suggests that D allele of VEGF gene is a risk factor for the occurrence of DPN.
Scopul acestei lucrări constă în studierea pentru prima dată în România a polimorfismului I/D al genei VEGF la un grup de pacienți cu diabet zaharat tip 2 și polineuropatie diabetică periferică comparativ cu un grup de control.
Acesta este un studiu de tip caz-control constând din 84 de pacienți cu diabet zaharat tip 2 și polineuropatie diabetică periferică, diagnosticată prin examen clinic neurologic și studii electrofiziologice de conducere nervoasă și un grup de control alcătuit din 94 de voluntari sănătoși. Pentru izolarea acidului dezoxiribonucleic s-a utilizat kitul ADN de la Zymo Research. Amplificarea in vitro a secvențelor de ADN a avut loc prin reacția de polimerizare în lanț. Amplificarea selectivă in vitro a unui fragment de ADN cu secvenţă cunoscută se realizează pe baza principiului extensiei unei amorse (“primer sau amplimer”). Fragmentele de ADN au fost separate prin electroforeză în gel. Vizualizarea și interpretarea gelurilor de agaroza s-a efectuat cu ajutorul sistemului de fotodocumentare de la Vilber Lourmat.
Frecvența alelei D a VEGF a fost semnificativ statistic mai mare la pacienţii cu neurop |
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ISSN: | 2284-5623 2284-5623 |
DOI: | 10.2478/rrlm-2014-0023 |