Document Detail

Ixodes holocyclus: kinetics of cutaneous basophil responses in naive, and actively and passively sensitized guinea pigs.
MedLine Citation:
PMID:  6692883     Owner:  NLM     Status:  MEDLINE    
In guinea pigs, macroscopic cutaneous reactions to initial (primary) Ixodes holocyclus feeding were first apparent at 96 hr post-tick attachment, peaked at 7 days (5 mm), and were gone by Day 14. Microscopic analyses of these primary tick feeding sites at 12, 24, 48, 72, and 96 hr post-attachment revealed the dominance mononuclear cells (63-94% of the infiltrate) at all times. Neutrophil levels were high initially (34% of the infiltrate), but quickly subsided to 6-15% of the cellular response. Eosinophils were essentially absent from primary sites, comprising only 1-3% of the infiltrate. Basophils were absent initially, but accumulated in small but significant numbers (12% of the infiltrate) at the epidermal-dermal border by 96 hr post-tick attachment, 3 days prior to maximum erythematous skin reactions. In sensitized and challenged (secondary) animals, erythematous reactions in response to secondary tick feeding were apparent as early as 18 hr post-tick attachment with peak responses at 48 hr (3-4 mm). Cutaneous leukocyte responses to challenge feedings were quantitated at 12, 24, 48, and 72 hr post-tick attachment and consisted initially (12-24 hr) of a strong mononuclear cell response (72-79% of the infiltrate) that was replaced by a dominant basophil response at 48 and 72 hr. Strong cutaneous basophil responses coincided with a significant level of tick rejection. Eosinophils and neutrophils were virtually absent from these secondary responses.(ABSTRACT TRUNCATED AT 250 WORDS)
S J Brown; B G Bagnall; P W Askenase
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Experimental parasitology     Volume:  57     ISSN:  0014-4894     ISO Abbreviation:  Exp. Parasitol.     Publication Date:  1984 Feb 
Date Detail:
Created Date:  1984-03-14     Completed Date:  1984-03-14     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0370713     Medline TA:  Exp Parasitol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  40-7     Citation Subset:  IM    
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MeSH Terms
Basophils / immunology*
Feeding Behavior
Guinea Pigs
Immunity, Active
Immunization, Passive*
Leukocyte Count
Skin / immunology*
Tick Infestations / immunology*
Ticks / immunology*,  physiology
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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