Antibody response against saliva antigens of Anopheles gambiae and Aedes aegypti in travellers in tropical Africa.
Exposure to vectors of infectious diseases has been associated with antibody responses against salivary antigens of arthropods among people living in endemic areas. This immune response has been proposed as a surrogate marker of exposure to vectors appropriate for evaluating the protective efficacy of antivectorial devices. The existence and potential use of such antibody responses in travellers transiently exposed to Plasmodium or arbovirus vectors in tropical areas has never been investigated. The IgM and IgG antibody responses of 88 French soldiers against the saliva of Anopheles gambiae and Aedes aegypti were evaluated before and after a 5-month journey in tropical Africa. Antibody responses against Anopheles and Aedes saliva increased significantly in 41% and 15% of the individuals, respectively, and appeared to be specific to the mosquito genus. A proteomic and immunoproteomic analysis of anopheles and Aedes saliva allowed for the identification of some antigens that were recognized by most of the exposed individuals. These results suggest that antibody responses to the saliva of mosquitoes could be considered as specific surrogate markers of exposure of travellers to mosquito vectors that transmit arthropod borne infections.
Orlandi-Pradines
Eve
E
Unité de recherche en biologie et en épidémiologie parasitaires, Institut de Médecine Tropicale du Service de Santé des Armées, Parc le Pharo, BP 46, 13998 Marseille-Armées, France.
Almeras
Lionel
L
Denis de Senneville
Laure
L
Barbe
Solenne
S
Remoué
Franck
F
Villard
Claude
C
Cornelie
Sylvie
S
Penhoat
Kristell
K
Pascual
Aurélie
A
Bourgouin
Catherine
C
Fontenille
Didier
D
Bonnet
Julien
J
Corre-Catelin
Nicole
N
Reiter
Paul
P
Pagés
Frederic
F
Laffite
Daniel
D
Boulanger
Denis
D
Simondon
François
F
Pradines
Bruno
B
Fusaï
Thierry
T
Rogier
Christophe
C
D000328:Adult; D000330:Aedes / Q000145:classification / Q000276:immunology*; D000595:Amino Acid Sequence; D000818:Animals; D000852:Anopheles / Q000276:immunology*; D000941:Antigens / Q000737:chemistry / Q000276:immunology*; D007560:Cote d'Ivoire; D005602:France; D005681:Gabon; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood*; D007075:Immunoglobulin M / Q000097:blood*; D007303:Insect Vectors / Q000276:immunology; D008297:Male; D008889:Military Personnel; D008969:Molecular Sequence Data; D012463:Saliva / Q000276:immunology*; D012471:Salivary Proteins and Peptides / Q000737:chemistry / Q000276:immunology; D014195:Travel
D000941:Antigens; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D012471:Salivary Proteins and Peptides