Abstract Object: Abdominal aortic aneurysm (AAA) pathogenesis remains poorly understood. This study investigated the gene expression profile of peripheral blood from patients with AAA using microarray technology. Methods and results: We determined gene expression profiles in pooled RNA from 10 AAA patients and 10 matched controls with arrays representing 14,000 transcripts. Microarray data for selected genes were confirmed by real-time PCR in two different AAA (n Z 36) and control (n Z 36) populations and integrated with biochemical data. We identified 91 genes which were differentially expressed in AAA patients. Gene Ontology analysis indicated a significant alter- ation of oxygen transport (increased hemoglobin gene expression) and lipid metabolism [including monoglyceride lipase and low density lipoprotein receptor-related protein 5 (LRP5) gene]. LRP5 expression was associated inversely with serum lipoprotein(a) [Lp(a)] concentration. Conclusions: Increased expression of hemoglobin chain genes as well as of genes involved in erythrocyte mechanical stability were observed in the AAA RNA pools. The association between low levels of LRP5 gene expression and increased levels of Lp(a) in AAA patients suggests a potential role of LRP5 in Lp(a) catabolism. Our data underline the power of microarrays in identifying further molecular perturbations associated with AAA.

Gene expression profiling of peripheral blood in patients with abdominal aortic aneurysm / Giusti B; Rossi L; Lapini I; Magi A; Pratesi G; Lavitrano M; Blasi GM; Pulli R; Pratesi C; Abbate R. - In: EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY. - ISSN 1078-5884. - STAMPA. - 38:(2009), pp. 104-112. [10.1016/j.ejvs.2009.01.020]

Gene expression profiling of peripheral blood in patients with abdominal aortic aneurysm

GIUSTI, BETTI;ROSSI, LUIGI;MAGI, ALBERTO;Pulli R;PRATESI, CARLO;ABBATE, ROSANNA
2009

Abstract

Abstract Object: Abdominal aortic aneurysm (AAA) pathogenesis remains poorly understood. This study investigated the gene expression profile of peripheral blood from patients with AAA using microarray technology. Methods and results: We determined gene expression profiles in pooled RNA from 10 AAA patients and 10 matched controls with arrays representing 14,000 transcripts. Microarray data for selected genes were confirmed by real-time PCR in two different AAA (n Z 36) and control (n Z 36) populations and integrated with biochemical data. We identified 91 genes which were differentially expressed in AAA patients. Gene Ontology analysis indicated a significant alter- ation of oxygen transport (increased hemoglobin gene expression) and lipid metabolism [including monoglyceride lipase and low density lipoprotein receptor-related protein 5 (LRP5) gene]. LRP5 expression was associated inversely with serum lipoprotein(a) [Lp(a)] concentration. Conclusions: Increased expression of hemoglobin chain genes as well as of genes involved in erythrocyte mechanical stability were observed in the AAA RNA pools. The association between low levels of LRP5 gene expression and increased levels of Lp(a) in AAA patients suggests a potential role of LRP5 in Lp(a) catabolism. Our data underline the power of microarrays in identifying further molecular perturbations associated with AAA.
2009
38
104
112
Giusti B; Rossi L; Lapini I; Magi A; Pratesi G; Lavitrano M; Blasi GM; Pulli R; Pratesi C; Abbate R
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/369023
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