Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies

Autores
Barcelona, Pablo Federico; Luna, J. D.; Chiabrando, Gustavo Alberto; Juarez, C. P.; Bhutto, I. A.; Baba, T.; McLeod, D. S.; Sanchez, Maria Cecilia; Lutty, G. A.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The immunolocalization of the low density lipoprotein receptor-related protein 1 (LRP1) and its ligand α 2-Macroglobulin (α2M) was examined in tissues from human donor eyes of normal, diabetic and sickle cell disease subjects. Streptavidin alkaline phosphatase immunohistochemistry was performed with a mouse anti-human LRP1 and rabbit anti-human α2M antibodies. Retinal and choroidal blood vessels were labeled with mouse anti-human CD34 antibody in adjacent tissue sections. Mean scores for immunostaining from the pathological and control eyes were statistically compared.LRP1 immunoreactivity was very weak to negative in the neural retina of normal subjects except in scattered astrocytes. LRP1 expression in diabetic eyes was detected in the internal limiting membrane (ILM), astrocytes, inner photoreceptor matrix, choriocapillaris and choroidal stroma. The ligand α2M, however, was limited mainly to blood vessel walls, some areas of the inner nuclear layer (INL), photoreceptors, RPE-Bruch's membrane-choriocapillaris complex, intercapillary septa, and choroidal stroma. In sickle cell eyes, avascular and vascular retina as well as choroidal neovascularization (CNV) were analyzed. In avascular areas, LRP1 immunoreactivity was in innermost retina (presumably ILM, astrocytes, and Muller cells) and INL as well as RPE-Bruch's membrane-choriocapillaris complex and choroidal stroma α2M was very weak in avascular peripheral retina compared to vascularized areas and limited to stroma in choroid. In contrast, in areas with CNV, LRP1 immunoreactivity was significantly decreased in overlying retina and in RPE-Bruch's membrane and choroidal stroma compared to the controls, while α2M was elevated in RPE-Bruch's membrane near CNV compared to normal areas in sickle cell choroid. The mean scores revealed that LRP1 and α2M in neural retina were significantly elevated in astrocytes and ILM in diabetic eyes (p ≤ 0.05), whereas in sickle cell eyes scores were elevated in ILM and INL (p ≤ 0.05). In addition, α2M immunoreactivity was in photoreceptors in both ischemic retinopathies. In choroid, the patterns of LRP1 and α2M expression were different and not coincident.This is the first demonstration of the presence of LRP1 and α2M in human proliferative retinopathies. Elevated LRP1 expression in sickle cell neural retina and diabetic inner retina and choroid suggests that LRP1 plays an important role in ischemic neovascular diseases.
Fil: Barcelona, Pablo Federico. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Luna, J. D.. Fundación Ver; Argentina
Fil: Chiabrando, Gustavo Alberto. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Juarez, C. P.. Fundación Ver; Argentina
Fil: Bhutto, I. A.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos. University Johns Hopkins; Estados Unidos
Fil: Baba, T.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos
Fil: McLeod, D. S.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos
Fil: Sanchez, Maria Cecilia. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Lutty, G. A.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos
Materia
Α2-MACROGLOBULIN
CHOROID
DIABETES MELLITUS
ISCHEMIA
LRP1
RETINA
SICKLE CELL DISEASE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/186669
Acceder
id CONICETDig_956b18a9a34e47e014e9bfaf36f8b9e0
oai_identifier_str oai:ri.conicet.gov.ar:11336/186669
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathiesBarcelona, Pablo FedericoLuna, J. D.Chiabrando, Gustavo AlbertoJuarez, C. P.Bhutto, I. A.Baba, T.McLeod, D. S.Sanchez, Maria CeciliaLutty, G. A.Α2-MACROGLOBULINCHOROIDDIABETES MELLITUSISCHEMIALRP1RETINASICKLE CELL DISEASEhttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3The immunolocalization of the low density lipoprotein receptor-related protein 1 (LRP1) and its ligand α 2-Macroglobulin (α2M) was examined in tissues from human donor eyes of normal, diabetic and sickle cell disease subjects. Streptavidin alkaline phosphatase immunohistochemistry was performed with a mouse anti-human LRP1 and rabbit anti-human α2M antibodies. Retinal and choroidal blood vessels were labeled with mouse anti-human CD34 antibody in adjacent tissue sections. Mean scores for immunostaining from the pathological and control eyes were statistically compared.LRP1 immunoreactivity was very weak to negative in the neural retina of normal subjects except in scattered astrocytes. LRP1 expression in diabetic eyes was detected in the internal limiting membrane (ILM), astrocytes, inner photoreceptor matrix, choriocapillaris and choroidal stroma. The ligand α2M, however, was limited mainly to blood vessel walls, some areas of the inner nuclear layer (INL), photoreceptors, RPE-Bruch's membrane-choriocapillaris complex, intercapillary septa, and choroidal stroma. In sickle cell eyes, avascular and vascular retina as well as choroidal neovascularization (CNV) were analyzed. In avascular areas, LRP1 immunoreactivity was in innermost retina (presumably ILM, astrocytes, and Muller cells) and INL as well as RPE-Bruch's membrane-choriocapillaris complex and choroidal stroma α2M was very weak in avascular peripheral retina compared to vascularized areas and limited to stroma in choroid. In contrast, in areas with CNV, LRP1 immunoreactivity was significantly decreased in overlying retina and in RPE-Bruch's membrane and choroidal stroma compared to the controls, while α2M was elevated in RPE-Bruch's membrane near CNV compared to normal areas in sickle cell choroid. The mean scores revealed that LRP1 and α2M in neural retina were significantly elevated in astrocytes and ILM in diabetic eyes (p ≤ 0.05), whereas in sickle cell eyes scores were elevated in ILM and INL (p ≤ 0.05). In addition, α2M immunoreactivity was in photoreceptors in both ischemic retinopathies. In choroid, the patterns of LRP1 and α2M expression were different and not coincident.This is the first demonstration of the presence of LRP1 and α2M in human proliferative retinopathies. Elevated LRP1 expression in sickle cell neural retina and diabetic inner retina and choroid suggests that LRP1 plays an important role in ischemic neovascular diseases.Fil: Barcelona, Pablo Federico. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Luna, J. D.. Fundación Ver; ArgentinaFil: Chiabrando, Gustavo Alberto. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Juarez, C. P.. Fundación Ver; ArgentinaFil: Bhutto, I. A.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos. University Johns Hopkins; Estados UnidosFil: Baba, T.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados UnidosFil: McLeod, D. S.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados UnidosFil: Sanchez, Maria Cecilia. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Lutty, G. A.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados UnidosAcademic Press Ltd - Elsevier Science Ltd2010-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/186669Barcelona, Pablo Federico; Luna, J. D.; Chiabrando, Gustavo Alberto; Juarez, C. P.; Bhutto, I. A.; et al.; Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies; Academic Press Ltd - Elsevier Science Ltd; Experimental Eye Research; 91; 2; 8-2010; 264-2720014-4835CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.exer.2010.05.017info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0014483510001661info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:42:53Zoai:ri.conicet.gov.ar:11336/186669instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:42:53.349CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies
title Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies
spellingShingle Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies
Barcelona, Pablo Federico
Α2-MACROGLOBULIN
CHOROID
DIABETES MELLITUS
ISCHEMIA
LRP1
RETINA
SICKLE CELL DISEASE
title_short Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies
title_full Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies
title_fullStr Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies
title_full_unstemmed Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies
title_sort Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies
dc.creator.none.fl_str_mv Barcelona, Pablo Federico
Luna, J. D.
Chiabrando, Gustavo Alberto
Juarez, C. P.
Bhutto, I. A.
Baba, T.
McLeod, D. S.
Sanchez, Maria Cecilia
Lutty, G. A.
author Barcelona, Pablo Federico
author_facet Barcelona, Pablo Federico
Luna, J. D.
Chiabrando, Gustavo Alberto
Juarez, C. P.
Bhutto, I. A.
Baba, T.
McLeod, D. S.
Sanchez, Maria Cecilia
Lutty, G. A.
author_role author
author2 Luna, J. D.
Chiabrando, Gustavo Alberto
Juarez, C. P.
Bhutto, I. A.
Baba, T.
McLeod, D. S.
Sanchez, Maria Cecilia
Lutty, G. A.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Α2-MACROGLOBULIN
CHOROID
DIABETES MELLITUS
ISCHEMIA
LRP1
RETINA
SICKLE CELL DISEASE
topic Α2-MACROGLOBULIN
CHOROID
DIABETES MELLITUS
ISCHEMIA
LRP1
RETINA
SICKLE CELL DISEASE
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.1
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv The immunolocalization of the low density lipoprotein receptor-related protein 1 (LRP1) and its ligand α 2-Macroglobulin (α2M) was examined in tissues from human donor eyes of normal, diabetic and sickle cell disease subjects. Streptavidin alkaline phosphatase immunohistochemistry was performed with a mouse anti-human LRP1 and rabbit anti-human α2M antibodies. Retinal and choroidal blood vessels were labeled with mouse anti-human CD34 antibody in adjacent tissue sections. Mean scores for immunostaining from the pathological and control eyes were statistically compared.LRP1 immunoreactivity was very weak to negative in the neural retina of normal subjects except in scattered astrocytes. LRP1 expression in diabetic eyes was detected in the internal limiting membrane (ILM), astrocytes, inner photoreceptor matrix, choriocapillaris and choroidal stroma. The ligand α2M, however, was limited mainly to blood vessel walls, some areas of the inner nuclear layer (INL), photoreceptors, RPE-Bruch's membrane-choriocapillaris complex, intercapillary septa, and choroidal stroma. In sickle cell eyes, avascular and vascular retina as well as choroidal neovascularization (CNV) were analyzed. In avascular areas, LRP1 immunoreactivity was in innermost retina (presumably ILM, astrocytes, and Muller cells) and INL as well as RPE-Bruch's membrane-choriocapillaris complex and choroidal stroma α2M was very weak in avascular peripheral retina compared to vascularized areas and limited to stroma in choroid. In contrast, in areas with CNV, LRP1 immunoreactivity was significantly decreased in overlying retina and in RPE-Bruch's membrane and choroidal stroma compared to the controls, while α2M was elevated in RPE-Bruch's membrane near CNV compared to normal areas in sickle cell choroid. The mean scores revealed that LRP1 and α2M in neural retina were significantly elevated in astrocytes and ILM in diabetic eyes (p ≤ 0.05), whereas in sickle cell eyes scores were elevated in ILM and INL (p ≤ 0.05). In addition, α2M immunoreactivity was in photoreceptors in both ischemic retinopathies. In choroid, the patterns of LRP1 and α2M expression were different and not coincident.This is the first demonstration of the presence of LRP1 and α2M in human proliferative retinopathies. Elevated LRP1 expression in sickle cell neural retina and diabetic inner retina and choroid suggests that LRP1 plays an important role in ischemic neovascular diseases.
Fil: Barcelona, Pablo Federico. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Luna, J. D.. Fundación Ver; Argentina
Fil: Chiabrando, Gustavo Alberto. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Juarez, C. P.. Fundación Ver; Argentina
Fil: Bhutto, I. A.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos. University Johns Hopkins; Estados Unidos
Fil: Baba, T.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos
Fil: McLeod, D. S.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos
Fil: Sanchez, Maria Cecilia. Universidad Nacional de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro de Investigaciones en Bioquímica Clínica e Inmunología; Argentina
Fil: Lutty, G. A.. Johns Hopkins University School of Medicine. Wilmer Ophthalmological Institute; Estados Unidos
description The immunolocalization of the low density lipoprotein receptor-related protein 1 (LRP1) and its ligand α 2-Macroglobulin (α2M) was examined in tissues from human donor eyes of normal, diabetic and sickle cell disease subjects. Streptavidin alkaline phosphatase immunohistochemistry was performed with a mouse anti-human LRP1 and rabbit anti-human α2M antibodies. Retinal and choroidal blood vessels were labeled with mouse anti-human CD34 antibody in adjacent tissue sections. Mean scores for immunostaining from the pathological and control eyes were statistically compared.LRP1 immunoreactivity was very weak to negative in the neural retina of normal subjects except in scattered astrocytes. LRP1 expression in diabetic eyes was detected in the internal limiting membrane (ILM), astrocytes, inner photoreceptor matrix, choriocapillaris and choroidal stroma. The ligand α2M, however, was limited mainly to blood vessel walls, some areas of the inner nuclear layer (INL), photoreceptors, RPE-Bruch's membrane-choriocapillaris complex, intercapillary septa, and choroidal stroma. In sickle cell eyes, avascular and vascular retina as well as choroidal neovascularization (CNV) were analyzed. In avascular areas, LRP1 immunoreactivity was in innermost retina (presumably ILM, astrocytes, and Muller cells) and INL as well as RPE-Bruch's membrane-choriocapillaris complex and choroidal stroma α2M was very weak in avascular peripheral retina compared to vascularized areas and limited to stroma in choroid. In contrast, in areas with CNV, LRP1 immunoreactivity was significantly decreased in overlying retina and in RPE-Bruch's membrane and choroidal stroma compared to the controls, while α2M was elevated in RPE-Bruch's membrane near CNV compared to normal areas in sickle cell choroid. The mean scores revealed that LRP1 and α2M in neural retina were significantly elevated in astrocytes and ILM in diabetic eyes (p ≤ 0.05), whereas in sickle cell eyes scores were elevated in ILM and INL (p ≤ 0.05). In addition, α2M immunoreactivity was in photoreceptors in both ischemic retinopathies. In choroid, the patterns of LRP1 and α2M expression were different and not coincident.This is the first demonstration of the presence of LRP1 and α2M in human proliferative retinopathies. Elevated LRP1 expression in sickle cell neural retina and diabetic inner retina and choroid suggests that LRP1 plays an important role in ischemic neovascular diseases.
publishDate 2010
dc.date.none.fl_str_mv 2010-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/186669
Barcelona, Pablo Federico; Luna, J. D.; Chiabrando, Gustavo Alberto; Juarez, C. P.; Bhutto, I. A.; et al.; Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies; Academic Press Ltd - Elsevier Science Ltd; Experimental Eye Research; 91; 2; 8-2010; 264-272
0014-4835
CONICET Digital
CONICET
url http://hdl.handle.net/11336/186669
identifier_str_mv Barcelona, Pablo Federico; Luna, J. D.; Chiabrando, Gustavo Alberto; Juarez, C. P.; Bhutto, I. A.; et al.; Immunohistochemical localization of low density lipoprotein receptor-related protein 1 and α2-Macroglobulin in retinal and choroidal tissue of proliferative retinopathies; Academic Press Ltd - Elsevier Science Ltd; Experimental Eye Research; 91; 2; 8-2010; 264-272
0014-4835
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.exer.2010.05.017
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0014483510001661
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Academic Press Ltd - Elsevier Science Ltd
publisher.none.fl_str_mv Academic Press Ltd - Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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