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Immunohistochemical identification of plasma protein deposits in the wall of lenticulostriate arteries in patients with long-standing hypertension, with and without lipohyalinosis / Identificação imuno-histoquímica de depósitos de proteínas plasmáticas na parede das artérias lentículo-estriadas em pacientes com hipertensão arterial de longa duração, com e sem lipo-hialinose
Andrade, Magda Rocha; Pittella, José Eymard Homem.
  • Andrade, Magda Rocha; Federal University of Minas Gerais. School of Medicine. Department of Pathology and Forensic Medicine. Laboratory of Neuropathology. Belo Horizonte. BR
  • Pittella, José Eymard Homem; Federal University of Minas Gerais. School of Medicine. Department of Pathology and Forensic Medicine. Laboratory of Neuropathology. Belo Horizonte. BR
Arq. neuropsiquiatr ; 67(1): 82-89, Mar. 2009. ilus, tab
Article in English | LILACS | ID: lil-509113
ABSTRACT

PURPOSE:

To investigate, through an immunohistochemical method, whether there is deposition of plasma proteins in the wall of lenticulostriate, cortical and leptomeningeal arteries of hypertensive patients, with and without lipohyalinosis.

METHOD:

Forty patients with essential hypertension were selected at random, 20 with lipohyalinosis in the lenticulostriate arteries (HH group) and 20 without lipohyalinosis (H group), matched with 20 normotensive controls (C group).

RESULTS:

Plasma protein deposits were identified in eight patients (40 percent) in the C group, in 15 patients (75 percent) in the H group, and in all 20 patients (100 percent) in the HH group, the difference being significant for the H group and highly significant for the HH group, as compared with the C group. In all groups, the distribution of plasma protein deposits, subendothelial in normal arteries, and diffuse, irregular in the wall of arteries with lipohyalinosis, was more frequent in the lenticulostriate arteries of the putamen.

CONCLUSION:

Deposition of plasma proteins in the lenticulostriate arteries seems to be relatively frequent in normotensive individuals, starting in middle age. Such process appears to be intensified by hypertension, especially in individuals with lipohyalinosis.
RESUMO
PROPÓSITO Investigar, por meio de método imuno-histoquímico, a deposição de proteínas plasmáticas na parede das artérias lentículo-estriadas, corticais e leptomeníngeas em pacientes com hipertensão arterial, com e sem lipo-hialinose.

MÉTODO:

Quarenta pacientes com hipertensão arterial foram selecionados aleatoriamente, sendo 20 com lipo-hialinose nas artérias lentículo-estriadas (grupo HH) e 20 sem lipo-hialinose (grupo H), pareados com 20 controles normotensos (grupo C).

RESULTADOS:

Depósitos de proteínas plasmáticas foram identificados em oito pacientes (40 por cento) do grupo C, em 15 pacientes (75 por cento) do grupo H e em todos os 20 pacientes (100 por cento) do grupo HH, a diferença sendo significativa para o grupo H e altamente significativa para o grupo HH, quando comparada com o grupo C. Em todos os grupos, a distribuição dos depósitos de proteínas plasmáticas, subendotelial em artérias normais e difusa, irregular, na parede das artérias com lipo-hialinose, foi mais freqüente nas artérias lentículo-estriadas do putâmen.

CONCLUSÃO:

A deposição de proteínas plasmáticas nas artérias lentículo-estriadas parece ser um fenômeno relativamente freqüente em indivíduos normotensos, a partir da meia-idade. Tal processo parece ser intensificado pela hipertensão arterial, particularmente naqueles pacientes com lipo-hialinose.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Basal Ganglia / Blood Proteins / Middle Cerebral Artery / Basal Ganglia Cerebrovascular Disease / Hypertension Type of study: Controlled clinical trial / Diagnostic study / Observational study / Prognostic study Limits: Adult / Aged / Aged80 / Humans Language: English Journal: Arq. neuropsiquiatr Journal subject: Neurology / Psychiatry Year: 2009 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Federal University of Minas Gerais/BR

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Full text: Available Index: LILACS (Americas) Main subject: Basal Ganglia / Blood Proteins / Middle Cerebral Artery / Basal Ganglia Cerebrovascular Disease / Hypertension Type of study: Controlled clinical trial / Diagnostic study / Observational study / Prognostic study Limits: Adult / Aged / Aged80 / Humans Language: English Journal: Arq. neuropsiquiatr Journal subject: Neurology / Psychiatry Year: 2009 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Federal University of Minas Gerais/BR