Severe structural damage of the seemingly non-diseased infrarenal aortic aneurysm neck

Objective The success of open and endovascular repair of abdominal aortic aneurysms (AAA) is hampered by postoperative dilatation of the anatomical neck of the AAA, which is used for graft attachment. The purpose of this study was to determine whether the macroscopically non-diseased infrarenal aort...

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Veröffentlicht in:Journal of vascular surgery 2008-08, Vol.48 (2), p.425-434
Hauptverfasser: Diehm, Nicolas, MD, Di Santo, Stefano, PhD, Schaffner, Thomas, MD, Schmidli, Juerg, MD, Völzmann, Jan, BMS, Jüni, Peter, MD, Baumgartner, Iris, MD, Kalka, Christoph, MD
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container_end_page 434
container_issue 2
container_start_page 425
container_title Journal of vascular surgery
container_volume 48
creator Diehm, Nicolas, MD
Di Santo, Stefano, PhD
Schaffner, Thomas, MD
Schmidli, Juerg, MD
Völzmann, Jan, BMS
Jüni, Peter, MD
Baumgartner, Iris, MD
Kalka, Christoph, MD
description Objective The success of open and endovascular repair of abdominal aortic aneurysms (AAA) is hampered by postoperative dilatation of the anatomical neck of the AAA, which is used for graft attachment. The purpose of this study was to determine whether the macroscopically non-diseased infrarenal aortic neck of AAA is histologically and biochemically altered at the time of operative repair. Methods We harvested full-thickness aortic wall samples as longitudinal stripes spanning from AAA neck to aneurysmal sac in 22 consecutive patients undergoing open surgical AAA repair. Control tissue was obtained from five organ donors and five deceased subjects undergoing autopsy without evidence of aneurysmal disease. We assessed aortic media thickness, number of intact elastic lamellar units, media destruction, and neovascularization grade and performed immunohistochemistry for matrix metalloproteinase (MMP)-9 and phosphorylated c-Jun N-terminal kinase (p-JNK). MMP-9 and p-JNK protein expressions were quantified using Western Blots. Results The median thickness of the aortic media was 1150 μm in control tissue (range, 1000-1300), 510 μm in aortic necks (250-900), and 200 μm in aortic sacs (50-500, P from nonparametric test for trend
doi_str_mv 10.1016/j.jvs.2008.03.001
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The purpose of this study was to determine whether the macroscopically non-diseased infrarenal aortic neck of AAA is histologically and biochemically altered at the time of operative repair. Methods We harvested full-thickness aortic wall samples as longitudinal stripes spanning from AAA neck to aneurysmal sac in 22 consecutive patients undergoing open surgical AAA repair. Control tissue was obtained from five organ donors and five deceased subjects undergoing autopsy without evidence of aneurysmal disease. We assessed aortic media thickness, number of intact elastic lamellar units, media destruction, and neovascularization grade and performed immunohistochemistry for matrix metalloproteinase (MMP)-9 and phosphorylated c-Jun N-terminal kinase (p-JNK). MMP-9 and p-JNK protein expressions were quantified using Western Blots. Results The median thickness of the aortic media was 1150 μm in control tissue (range, 1000-1300), 510 μm in aortic necks (250-900), and 200 μm in aortic sacs (50-500, P from nonparametric test for trend &lt;.001). The number of intact elastic lamellar units was 33 in controls (range, 33-55), 12 in aortic necks (0-31) and three in aortic sacs (0-10, P &lt; .001). The expression of MMP-9 and p-JNK as assessed by Western Blots ( P = .007 and .061, respectively) and zymography ( P for trend &lt;.001) were up regulated in both the AAA neck and sac compared with controls. Except for p-JNK expression, differences between tissues were similar after the adjustment for age, gender, and type of sampling. Conclusion The seemingly non-diseased infrarenal AAA neck in patients with AAA undergoing surgical repair shows histological signs of destruction and upregulation of potential drug targets.</description><identifier>ISSN: 0741-5214</identifier><identifier>EISSN: 1097-6809</identifier><identifier>DOI: 10.1016/j.jvs.2008.03.001</identifier><identifier>PMID: 18502079</identifier><identifier>CODEN: JVSUES</identifier><language>eng</language><publisher>New York, NY: Mosby, Inc</publisher><subject>Aged ; Aged, 80 and over ; Aortic Aneurysm, Abdominal - pathology ; Aortic Aneurysm, Abdominal - surgery ; Biological and medical sciences ; Biomarkers - analysis ; Blood and lymphatic vessels ; Cardiology. Vascular system ; Case-Control Studies ; Diseases of the aorta ; Female ; Humans ; Immunohistochemistry ; JNK Mitogen-Activated Protein Kinases - metabolism ; Laparotomy - methods ; Male ; Matrix Metalloproteinase 9 - metabolism ; Medical sciences ; Middle Aged ; Postoperative Complications - diagnosis ; Reference Values ; Reverse Transcriptase Polymerase Chain Reaction ; Sensitivity and Specificity ; Severity of Illness Index ; Surgery ; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases ; Tissue Culture Techniques ; Tunica Intima - pathology ; Vascular surgery: aorta, extremities, vena cava. 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The purpose of this study was to determine whether the macroscopically non-diseased infrarenal aortic neck of AAA is histologically and biochemically altered at the time of operative repair. Methods We harvested full-thickness aortic wall samples as longitudinal stripes spanning from AAA neck to aneurysmal sac in 22 consecutive patients undergoing open surgical AAA repair. Control tissue was obtained from five organ donors and five deceased subjects undergoing autopsy without evidence of aneurysmal disease. We assessed aortic media thickness, number of intact elastic lamellar units, media destruction, and neovascularization grade and performed immunohistochemistry for matrix metalloproteinase (MMP)-9 and phosphorylated c-Jun N-terminal kinase (p-JNK). MMP-9 and p-JNK protein expressions were quantified using Western Blots. Results The median thickness of the aortic media was 1150 μm in control tissue (range, 1000-1300), 510 μm in aortic necks (250-900), and 200 μm in aortic sacs (50-500, P from nonparametric test for trend &lt;.001). The number of intact elastic lamellar units was 33 in controls (range, 33-55), 12 in aortic necks (0-31) and three in aortic sacs (0-10, P &lt; .001). The expression of MMP-9 and p-JNK as assessed by Western Blots ( P = .007 and .061, respectively) and zymography ( P for trend &lt;.001) were up regulated in both the AAA neck and sac compared with controls. Except for p-JNK expression, differences between tissues were similar after the adjustment for age, gender, and type of sampling. 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Vascular system</subject><subject>Case-Control Studies</subject><subject>Diseases of the aorta</subject><subject>Female</subject><subject>Humans</subject><subject>Immunohistochemistry</subject><subject>JNK Mitogen-Activated Protein Kinases - metabolism</subject><subject>Laparotomy - methods</subject><subject>Male</subject><subject>Matrix Metalloproteinase 9 - metabolism</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Postoperative Complications - diagnosis</subject><subject>Reference Values</subject><subject>Reverse Transcriptase Polymerase Chain Reaction</subject><subject>Sensitivity and Specificity</subject><subject>Severity of Illness Index</subject><subject>Surgery</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><subject>Tissue Culture Techniques</subject><subject>Tunica Intima - pathology</subject><subject>Vascular surgery: aorta, extremities, vena cava. 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Vascular system</topic><topic>Case-Control Studies</topic><topic>Diseases of the aorta</topic><topic>Female</topic><topic>Humans</topic><topic>Immunohistochemistry</topic><topic>JNK Mitogen-Activated Protein Kinases - metabolism</topic><topic>Laparotomy - methods</topic><topic>Male</topic><topic>Matrix Metalloproteinase 9 - metabolism</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Postoperative Complications - diagnosis</topic><topic>Reference Values</topic><topic>Reverse Transcriptase Polymerase Chain Reaction</topic><topic>Sensitivity and Specificity</topic><topic>Severity of Illness Index</topic><topic>Surgery</topic><topic>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</topic><topic>Tissue Culture Techniques</topic><topic>Tunica Intima - pathology</topic><topic>Vascular surgery: aorta, extremities, vena cava. Surgery of the lymphatic vessels</topic><topic>Vascular Surgical Procedures - adverse effects</topic><topic>Vascular Surgical Procedures - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Diehm, Nicolas, MD</creatorcontrib><creatorcontrib>Di Santo, Stefano, PhD</creatorcontrib><creatorcontrib>Schaffner, Thomas, MD</creatorcontrib><creatorcontrib>Schmidli, Juerg, MD</creatorcontrib><creatorcontrib>Völzmann, Jan, BMS</creatorcontrib><creatorcontrib>Jüni, Peter, MD</creatorcontrib><creatorcontrib>Baumgartner, Iris, MD</creatorcontrib><creatorcontrib>Kalka, Christoph, MD</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of vascular surgery</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Diehm, Nicolas, MD</au><au>Di Santo, Stefano, PhD</au><au>Schaffner, Thomas, MD</au><au>Schmidli, Juerg, MD</au><au>Völzmann, Jan, BMS</au><au>Jüni, Peter, MD</au><au>Baumgartner, Iris, MD</au><au>Kalka, Christoph, MD</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Severe structural damage of the seemingly non-diseased infrarenal aortic aneurysm neck</atitle><jtitle>Journal of vascular surgery</jtitle><addtitle>J Vasc Surg</addtitle><date>2008-08-01</date><risdate>2008</risdate><volume>48</volume><issue>2</issue><spage>425</spage><epage>434</epage><pages>425-434</pages><issn>0741-5214</issn><eissn>1097-6809</eissn><coden>JVSUES</coden><abstract>Objective The success of open and endovascular repair of abdominal aortic aneurysms (AAA) is hampered by postoperative dilatation of the anatomical neck of the AAA, which is used for graft attachment. The purpose of this study was to determine whether the macroscopically non-diseased infrarenal aortic neck of AAA is histologically and biochemically altered at the time of operative repair. Methods We harvested full-thickness aortic wall samples as longitudinal stripes spanning from AAA neck to aneurysmal sac in 22 consecutive patients undergoing open surgical AAA repair. Control tissue was obtained from five organ donors and five deceased subjects undergoing autopsy without evidence of aneurysmal disease. We assessed aortic media thickness, number of intact elastic lamellar units, media destruction, and neovascularization grade and performed immunohistochemistry for matrix metalloproteinase (MMP)-9 and phosphorylated c-Jun N-terminal kinase (p-JNK). MMP-9 and p-JNK protein expressions were quantified using Western Blots. Results The median thickness of the aortic media was 1150 μm in control tissue (range, 1000-1300), 510 μm in aortic necks (250-900), and 200 μm in aortic sacs (50-500, P from nonparametric test for trend &lt;.001). The number of intact elastic lamellar units was 33 in controls (range, 33-55), 12 in aortic necks (0-31) and three in aortic sacs (0-10, P &lt; .001). The expression of MMP-9 and p-JNK as assessed by Western Blots ( P = .007 and .061, respectively) and zymography ( P for trend &lt;.001) were up regulated in both the AAA neck and sac compared with controls. Except for p-JNK expression, differences between tissues were similar after the adjustment for age, gender, and type of sampling. Conclusion The seemingly non-diseased infrarenal AAA neck in patients with AAA undergoing surgical repair shows histological signs of destruction and upregulation of potential drug targets.</abstract><cop>New York, NY</cop><pub>Mosby, Inc</pub><pmid>18502079</pmid><doi>10.1016/j.jvs.2008.03.001</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record>
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subjects Aged
Aged, 80 and over
Aortic Aneurysm, Abdominal - pathology
Aortic Aneurysm, Abdominal - surgery
Biological and medical sciences
Biomarkers - analysis
Blood and lymphatic vessels
Cardiology. Vascular system
Case-Control Studies
Diseases of the aorta
Female
Humans
Immunohistochemistry
JNK Mitogen-Activated Protein Kinases - metabolism
Laparotomy - methods
Male
Matrix Metalloproteinase 9 - metabolism
Medical sciences
Middle Aged
Postoperative Complications - diagnosis
Reference Values
Reverse Transcriptase Polymerase Chain Reaction
Sensitivity and Specificity
Severity of Illness Index
Surgery
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Tissue Culture Techniques
Tunica Intima - pathology
Vascular surgery: aorta, extremities, vena cava. Surgery of the lymphatic vessels
Vascular Surgical Procedures - adverse effects
Vascular Surgical Procedures - methods
title Severe structural damage of the seemingly non-diseased infrarenal aortic aneurysm neck
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