Delayed-type skin reaction to 2,4-dinitrophenylated epidermal cells in guinea pigs with contact sensitivity to 2,4-dinitrochlorobenzene

1987 ◽  
Vol 279 (4) ◽  
pp. 236-240 ◽  
Author(s):  
S. Nakagawa ◽  
Y. Takei ◽  
D. Bang ◽  
H. Ueki
Keyword(s):  
Skin Reaction ◽  
Guinea Pigs ◽  
Epidermal Cells ◽  
Contact Sensitivity

Cutaneous DNA Vaccination Against Ebola Virus by Particle Bombardment: Histopathology and Alteration of CD3-positive Dendritic Epidermal Cells

2001 ◽  
Vol 38 (2) ◽  
pp. 203-215 ◽  
Author(s):  
K. E. Steele ◽  
K. Stabler ◽  
L. VanderZanden
Keyword(s):  
Particle Bombardment ◽  
Guinea Pigs ◽  
Ebola Virus ◽  
Dna Vaccination ◽  
Hair Follicles ◽  
Epidermal Cells ◽  
Gold Particles ◽  
Immunocompetent Mice ◽  
Inflammatory Changes ◽  
Epidermal Necrosis

We analyzed the localization of gold particles, expression of immunogenic protein, and histopathologic changes after vaccinating guinea pigs and mice with a DNA vaccine to the Ebola virus glycoprotein administered by cutaneous particle bombardment. Gold particles were deposited in all layers of the epidermis and in the dermis. Those in the epidermis were lost as the damaged layers sloughed, while those in the dermis were phagocytized by macrophages. Glycoprotein was demonstrated by immunohistochemistry primarily in keratinocytes in the epidermis and hair follicle epithelium and less frequently in dermal macrophages, fibroblasts, sebocytes, and cells that appeared to be Langerhans cells. The number of cells that expressed glycoprotein increased between 4 and 8 hours postvaccination, then decreased to near zero by 48 hours. The vaccine sites were histologically divisible into three zones. The central portion, zone 1, contained the most gold particles in the dermis and epidermis and had extensive tissue damage, including full-thickness epidermal necrosis. Zone 2 contained fewer gold particles in the epidermis and dermis and had less extensive necrosis. The majority of cells in which glycoprotein was expressed were in zone 2. Zone 3 contained gold particles only in the epidermis and had necrosis of only a few scattered cells. Regeneration of the epidermis in damaged areas was evident at 24 hours postvaccination and was essentially complete by day 5 in the mice and day 10 in the guinea pigs. Inflammatory changes were characterized by hemorrhage, edema, and infiltrates of neutrophils initially and by infiltrates of lymphocytes and macrophages at later times. In zone 1, inflammation affected both the epidermis and dermis. Peripherally, inflammation was relatively limited to the epidermis. CD3-positive dendritic epidermal cells were demonstrated in the epidermis and superficial hair follicles of unvaccinated immunocompetent mice and beige mice but not of SCID mice. These cells disappeared from all but the most peripheral portions of the vaccine sites of vaccinated mice within 24 hours. They reappeared slowly, failing to reach numbers comparable with unvaccinated mice by 35 days postvaccination. The epidermis of control guinea pigs also had CD3-positive cells, but they did not have dendrites. These findings should contribute to a better understanding of the mechanisms operating in response to DNA vaccination by particle bombardment.

I. SKIN ALLERGENIC PROPERTIES OF UNSAPONIFIABLE HOST LIPID FRACTION (USF) AND ITS RELATIONSHIP TO TUBERCULIN SKIN REACTION IN GUINEA PIGS

Allergy ◽  
1962 ◽  
Vol 17 (3) ◽  
pp. 209-219
Author(s):  
M. BLECHMANN ◽  
E. REVICI ◽  
P. COLANTUONO-BLECHMANN ◽  
I. BIER
Keyword(s):  
Skin Reaction ◽  
Guinea Pigs ◽  
Lipid Fraction

The participation of common and species-"specific" antigens of mycobacteria in the tuberculin skin reaction

1975 ◽  
Vol 21 (6) ◽  
pp. 774-783 ◽  
Author(s):  
Raymond Turcotte
Keyword(s):  
Skin Reaction ◽  
Guinea Pigs ◽  
Cutaneous Reaction ◽  
Tuberculin Reaction ◽  
Cross Absorption ◽  
Specific Antigens ◽  
The Common ◽  
Common Antigens ◽  
Species Specific

Protoplasmic extracts isolated from four different species of mycobacteria contained common and species-specific antigens. Both the common and the specific antigens were involved in the elicitation of the tuberculin reaction in sensitized guinea pigs. The elimination of the common antigens from the extracts by means of cross absorption with heterologous mycobacterial antibodies led to preparations which, at the doses used in this study, elicited a cutaneous reaction in animals sensitized with the corresponding strains only. Moreover, the tuberculin activity of the common antigens was about the same in animals sensitized either with homologous or heterologous strains.

Contact Sensitivity and Immunologic Tolerance in Germfree Guinea Pigs

1972 ◽  
Vol 141 (2) ◽  
pp. 522-526 ◽  
Author(s):  
M. H. Friedlaender ◽  
H. Baer ◽  
P. R. B. McMaster
Keyword(s):  
Guinea Pigs ◽  
Immunologic Tolerance ◽  
Contact Sensitivity

scholarly journals The Inability of Certain Fluorochromes to Induce Contact Sensitivity in Guinea Pigs

1964 ◽  
Vol 42 (4) ◽  
pp. 279-280 ◽  
Author(s):  
Florante C. Bocobo ◽  
Phyllis D. Kind ◽  
Arthur C. Curtis
Keyword(s):  
Guinea Pigs ◽  
Contact Sensitivity
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