Histochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wall
Background/Aim. The main complication of the atherosclerotic abdominal aortic aneurism (AAA) is her rupture that begins with lesion in intima and rupture. The purpose of this work was to determine immunocytochemical and morphofunctional characteristics of the cells in aortic wall in ruptured ath...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Military Health Department, Ministry of Defance, Serbia
2010-01-01
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| Series: | Vojnosanitetski Pregled |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0042-8450/2010/0042-84501012959T.pdf |
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| author | Tanasković Irena Mladenović-Mihailović Aleksandra Ušaj-Knežević Slavica Stanković Vesna Aleksić Aleksandar Kastratović Tatjana Aleksić Aleksandra Lazić Zorica Mladenović-Bogdanović Zorica Živanović Aleksandar Đurić Janko Jovičić Uglješa Šorak Marija |
| author_facet | Tanasković Irena Mladenović-Mihailović Aleksandra Ušaj-Knežević Slavica Stanković Vesna Aleksić Aleksandar Kastratović Tatjana Aleksić Aleksandra Lazić Zorica Mladenović-Bogdanović Zorica Živanović Aleksandar Đurić Janko Jovičić Uglješa Šorak Marija |
| author_sort | Tanasković Irena |
| collection | DOAJ |
| description | Background/Aim. The main complication of the atherosclerotic abdominal aortic aneurism (AAA) is her rupture that begins with lesion in intima and rupture. The purpose of this work was to determine immunocytochemical and morphofunctional characteristics of the cells in aortic wall in ruptured atherosclerotic abdominal aortic aneurysm. Method. During the course of this study, 20 samples of atherosclerotic AAA were analyzed, all of them obtained during authopsy. The samples were fixed in 4% formalin and embedded in paraffin. Sections of 5 μm thickness were stained histochemically (of Heidenhain azan stain and Periodic acid Schiff - PAS stain) and immunocytochemically using a DAKO LSAB+/HRP technique to identify α-smooth muscle actin (α-SMA), vimentin, myosin heavy chains (MHC), desmin, S-100 protein, CD45 and CD68 (DAKO specification). Results. The results of our study showed that ruptured atherosclerotic AAA is characterized by a complete absence of endothelial cells, the disruption of basal membrane and internal elastic lamina, as well as a presence of the remains of hypocellular complicated atherosclerotic lesion in intima. On the plaque margins, as well as in the media, smooth muscle cells (SMCs) are present, which express a α-SMA and vimentin (but without MHC or desmin expression), as well as leukocyte infiltration, and a large number of foam cells. Some of the foam cells show a CD68-immunoreactivity, while the others show vimentin- and S-100 protein-immunoreactivity. Media is thinned out with a disorganized elastic lamellas, while adventitia is characterized by inflammatory inflitrate (infection). Conclusion. Rupture of aneurysm occurs from the primary intimal disruption, which spreads into thinned out media and adventitia. Rupture is caused by unstable atherom, hypocellularity, loss of contractile characteristics of smooth muscle cells in intima and media, neovascularization of the media, as well as by the activity of the macrophages in the lesion. |
| first_indexed | 2024-12-11T08:10:43Z |
| format | Article |
| id | doaj.art-45ebd8e7c60740168d20a3060efb4153 |
| institution | Directory Open Access Journal |
| issn | 0042-8450 |
| language | English |
| last_indexed | 2024-12-11T08:10:43Z |
| publishDate | 2010-01-01 |
| publisher | Military Health Department, Ministry of Defance, Serbia |
| record_format | Article |
| series | Vojnosanitetski Pregled |
| spelling | doaj.art-45ebd8e7c60740168d20a3060efb41532022-12-22T01:14:53ZengMilitary Health Department, Ministry of Defance, SerbiaVojnosanitetski Pregled0042-84502010-01-01671295996410.2298/VSP1012959THistochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wallTanasković IrenaMladenović-Mihailović AleksandraUšaj-Knežević SlavicaStanković VesnaAleksić AleksandarKastratović TatjanaAleksić AleksandraLazić ZoricaMladenović-Bogdanović ZoricaŽivanović AleksandarĐurić JankoJovičić UglješaŠorak MarijaBackground/Aim. The main complication of the atherosclerotic abdominal aortic aneurism (AAA) is her rupture that begins with lesion in intima and rupture. The purpose of this work was to determine immunocytochemical and morphofunctional characteristics of the cells in aortic wall in ruptured atherosclerotic abdominal aortic aneurysm. Method. During the course of this study, 20 samples of atherosclerotic AAA were analyzed, all of them obtained during authopsy. The samples were fixed in 4% formalin and embedded in paraffin. Sections of 5 μm thickness were stained histochemically (of Heidenhain azan stain and Periodic acid Schiff - PAS stain) and immunocytochemically using a DAKO LSAB+/HRP technique to identify α-smooth muscle actin (α-SMA), vimentin, myosin heavy chains (MHC), desmin, S-100 protein, CD45 and CD68 (DAKO specification). Results. The results of our study showed that ruptured atherosclerotic AAA is characterized by a complete absence of endothelial cells, the disruption of basal membrane and internal elastic lamina, as well as a presence of the remains of hypocellular complicated atherosclerotic lesion in intima. On the plaque margins, as well as in the media, smooth muscle cells (SMCs) are present, which express a α-SMA and vimentin (but without MHC or desmin expression), as well as leukocyte infiltration, and a large number of foam cells. Some of the foam cells show a CD68-immunoreactivity, while the others show vimentin- and S-100 protein-immunoreactivity. Media is thinned out with a disorganized elastic lamellas, while adventitia is characterized by inflammatory inflitrate (infection). Conclusion. Rupture of aneurysm occurs from the primary intimal disruption, which spreads into thinned out media and adventitia. Rupture is caused by unstable atherom, hypocellularity, loss of contractile characteristics of smooth muscle cells in intima and media, neovascularization of the media, as well as by the activity of the macrophages in the lesion.http://www.doiserbia.nb.rs/img/doi/0042-8450/2010/0042-84501012959T.pdfaortic aneurysm, abdominalrupturearteriosclerosisimmunohistochemistryhistology |
| spellingShingle | Tanasković Irena Mladenović-Mihailović Aleksandra Ušaj-Knežević Slavica Stanković Vesna Aleksić Aleksandar Kastratović Tatjana Aleksić Aleksandra Lazić Zorica Mladenović-Bogdanović Zorica Živanović Aleksandar Đurić Janko Jovičić Uglješa Šorak Marija Histochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wall Vojnosanitetski Pregled aortic aneurysm, abdominal rupture arteriosclerosis immunohistochemistry histology |
| title | Histochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wall |
| title_full | Histochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wall |
| title_fullStr | Histochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wall |
| title_full_unstemmed | Histochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wall |
| title_short | Histochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wall |
| title_sort | histochemical and immunohistochemical analysis of ruptured atherosclerotic abdominal aortic aneurysm wall |
| topic | aortic aneurysm, abdominal rupture arteriosclerosis immunohistochemistry histology |
| url | http://www.doiserbia.nb.rs/img/doi/0042-8450/2010/0042-84501012959T.pdf |
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