Serveur d'exploration sur le lymphœdème

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AUTOLOGOUS LYMPHOCYTE THERAPY FOR EXPERIMENTAL CANINE LYMPHOEDEMA: A PILOT STUDY

Identifieur interne : 00CB25 ( Main/Exploration ); précédent : 00CB24; suivant : 00CB26

AUTOLOGOUS LYMPHOCYTE THERAPY FOR EXPERIMENTAL CANINE LYMPHOEDEMA: A PILOT STUDY

Auteurs : Kenneth R. Knight [Australie] ; Morris Ritz [Australie] ; Diana A. Lepore [Australie] ; Russell Booth [Australie] ; Keryn Octigan [Australie] ; Bernard Mcc. O Rien [Australie]

Source :

RBID : ISTEX:E53B8C7F852A149EF3199516D4A9AB831312CBDD

Descripteurs français

English descriptors

Abstract

Obstructive lymphoedema, an accumulation of protein‐rich fluid in interstitial spaces, was created in five dogs by a combination of the irradiation of one groin and subsequent surgical ablation of any remaining lymphatics. The lymphoedema was stable for up to 2 years. The aim was to test the efficacy of intra‐arterial injection of autologous lymphocytes as a therapy for lymphoedema. The hypothesis was that cytokines produced by lymphocytes mediate proteolysis by macrophage proteinases in the lymphoedematous limb to remove the excess protein and relieve the oedema. A concentrated lymphocyterich preparation was isolated from blood by the Ficoll‐Paque method. These preparations were injected into the femoral artery four times at approximately 4 weekly intervals. Three months after the first injection of lymphocytes, lymphoedematous limbs showed a marked 69% reduction in the mean excess circumferences compared with opposite control limbs. After treatment, skin thickness and hydroxyproline content (both measures of fibrosis) as well as water content (a measure of oedema) had reduced significantly. In specimens of interstitial fluid and in skin homogenates acidic proteinase activity increased and the protein concentration decreased significantly compared with controls. It is concluded that increased proteolysis, possibly due to activated macrophages recruited to the lymphoedematous limb, may partly explain these results.

Url:
DOI: 10.1111/j.1445-2197.1994.tb02222.x


Affiliations:


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Le document en format XML

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<div type="abstract" xml:lang="en">Obstructive lymphoedema, an accumulation of protein‐rich fluid in interstitial spaces, was created in five dogs by a combination of the irradiation of one groin and subsequent surgical ablation of any remaining lymphatics. The lymphoedema was stable for up to 2 years. The aim was to test the efficacy of intra‐arterial injection of autologous lymphocytes as a therapy for lymphoedema. The hypothesis was that cytokines produced by lymphocytes mediate proteolysis by macrophage proteinases in the lymphoedematous limb to remove the excess protein and relieve the oedema. A concentrated lymphocyterich preparation was isolated from blood by the Ficoll‐Paque method. These preparations were injected into the femoral artery four times at approximately 4 weekly intervals. Three months after the first injection of lymphocytes, lymphoedematous limbs showed a marked 69% reduction in the mean excess circumferences compared with opposite control limbs. After treatment, skin thickness and hydroxyproline content (both measures of fibrosis) as well as water content (a measure of oedema) had reduced significantly. In specimens of interstitial fluid and in skin homogenates acidic proteinase activity increased and the protein concentration decreased significantly compared with controls. It is concluded that increased proteolysis, possibly due to activated macrophages recruited to the lymphoedematous limb, may partly explain these results.</div>
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