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M9650339.TXT
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Document 0339
DOCN M9650339
TI Predominant CD8+ infiltrate in limb biopsies of individuals with
filarial lymphedema and elephantiasis.
DT 9605
AU Freedman DO; Horn TD; Maia e Silva CM; Braga C; Maciel A; Division of
Geographic Medicine, University of Alabama at; Birmingham, USA.
SO Am J Trop Med Hyg. 1995 Dec;53(6):633-8. Unique Identifier : AIDSLINE
MED/96155958
AB In 34 individuals with a spectrum of clinical manifestations of
Bancroftian filariasis, we investigated whether
immunoperoxidase-stained, random, superficial dermal biopsies could
further elucidate the nature of the diffuse damage to superficial
lymphatics that had been recently demonstrated by radionuclide
lymphoscintigraphy. A total of 78% and 68% of limbs from patients with
clinical disease and asymptomatic microfilaremia, respectively,
contained EN4+PAL-E- lymphatic vessels that were abnormally dilated. The
majority of subjects, regardless of clinical classification, had a CD3+
perivascular but not a perilymphatic infiltrate in tissues and no
parasites were present. In contrast to those individuals with
asymptomatic infection, a striking predominance of CD8+ T cells was
found in the tissue of individuals with clinical disease. Tissue
pathology consistent with cutaneous bacterial infection was not
observed. The prominent perivenular and pericapillary mononuclear
infiltrates likely indicate, in light of current understanding of
lymphocyte recirculation, the extravasation of lymphocytes from the
vascular circulation into the inflamed filarial tissue.
DE Animal Antibodies, Helminth/ANALYSIS Antibodies, Monoclonal Antigens,
CD3/ANALYSIS Biopsy, Needle *Chemotaxis, Leukocyte CD4-CD8 Ratio
CD8-Positive T-Lymphocytes/*PATHOLOGY Elephantiasis,
Filarial/ETIOLOGY/*PATHOLOGY/RADIONUCLIDE IMAGING Extremities Human
Immunoenzyme Techniques Lymphatic System/PATHOLOGY/RADIONUCLIDE IMAGING
Lymphedema/ETIOLOGY/*PATHOLOGY/RADIONUCLIDE IMAGING Organotechnetium
Compounds/DIAGNOSTIC USE Skin/*PATHOLOGY Support, U.S. Gov't, P.H.S.
*Wuchereria bancrofti/IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).