Biomaterial Database

Analysis of enhancing effect of sand fly saliva on Leishmania infection in mice. 1991

C M Theodos, and J M Ribeiro, and R G Titus

Department of Tropical Public Health, Harvard School of Public Health, Boston, Massachusetts 02115.

Salivary gland lysates of the sand fly Lutzomyia longipalpis markedly enhance the course of infection with Leishmania major in mice. Here we examine various parameters of this phenomenon. The exacerbative effect of L. longipalpis salivary gland lysates occurred in five different mouse strains; however, the character of the effect varied from one strain to another. Consistent exacerbation of infection was achieved with as little as 1/10 of a gland. The exacerbative effect applied to more than one Leishmania species and to more than one species of sand fly, since salivary gland lysates of L. longipalpis enhanced infection with L. mexicana amazonensis and salivary gland lysates of Phlebotomus papatasi enhanced infection with L. major. A synthetic rat calcitonin gene-related peptide was also found to exacerbate infection with L. major but was found to be approximately 100-fold less potent than saliva in mediating this effect. In addition, lesions induced at skin sites at which L. longipalpis had probed for a blood meal exhibited an exacerbated course of infection similar to that seen when parasites were injected with sand fly salivary gland lysates.

UI	MeSH Term	Description	Entries
D007303	Insect Vectors	Insects that transmit infective organisms from one host to another or from an inanimate reservoir to an animate host.	Insect Vector,Vector, Insect,Vectors, Insect
D007896	Leishmaniasis	A disease caused by any of a number of species of protozoa in the genus LEISHMANIA. There are four major clinical types of this infection: cutaneous (Old and New World) (LEISHMANIASIS, CUTANEOUS), diffuse cutaneous (LEISHMANIASIS, DIFFUSE CUTANEOUS), mucocutaneous (LEISHMANIASIS, MUCOCUTANEOUS), and visceral (LEISHMANIASIS, VISCERAL).	Leishmania Infection,Infection, Leishmania,Infections, Leishmania,Leishmania Infections,Leishmaniases
D008815	Mice, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations, or by parent x offspring matings carried out with certain restrictions. All animals within an inbred strain trace back to a common ancestor in the twentieth generation.	Inbred Mouse Strains,Inbred Strain of Mice,Inbred Strain of Mouse,Inbred Strains of Mice,Mouse, Inbred Strain,Inbred Mouse Strain,Mouse Inbred Strain,Mouse Inbred Strains,Mouse Strain, Inbred,Mouse Strains, Inbred,Strain, Inbred Mouse,Strains, Inbred Mouse
D011576	Psychodidae	Small, hairy, moth-like flies which are of considerable public health importance as vectors of certain pathogenic organisms. Important disease-related genera are PHLEBOTOMUS, Lutzomyia, and Sergentomyia.	Lutzomyia,Moth Flies,Phlebotominae,Psychodinae,Sandflies,Sergentomyia,Sand Flies,Flies, Moth,Flies, Sand,Fly, Moth,Fly, Sand,Lutzomyias,Moth Fly,Sand Fly,Sandfly,Sergentomyias
D005260	Female		Females
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D012463	Saliva	The clear, viscous fluid secreted by the SALIVARY GLANDS and mucous glands of the mouth. It contains MUCINS, water, organic salts, and ptylin.	Salivas
D013045	Species Specificity	The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.	Species Specificities,Specificities, Species,Specificity, Species
D014612	Vaccines	Suspensions of killed or attenuated microorganisms (bacteria, viruses, fungi, protozoa), antigenic proteins, synthetic constructs, or other bio-molecular derivatives, administered for the prevention, amelioration, or treatment of infectious and other diseases.	Vaccine
D015740	Calcitonin Gene-Related Peptide	A 37-amino acid peptide derived from the calcitonin gene. It occurs as a result of alternative processing of mRNA from the calcitonin gene. The neuropeptide is widely distributed in the brain, gut, perivascular nerves, and other tissue. The peptide produces multiple biological effects and has both circulatory and neurotransmitter modes of action. In particular, it is a potent endogenous vasodilator.	Calcitonin Gene-Related Peptide I,Calcitonin Gene-Related Peptide II,alpha-CGRP,alpha-Calcitonin Gene-Related Peptide,beta-CGRP,beta-Calcitonin Gene-Related Peptide,Calcitonin Gene Related Peptide,Calcitonin Gene Related Peptide I,Calcitonin Gene Related Peptide II,Gene-Related Peptide, Calcitonin,alpha Calcitonin Gene Related Peptide,beta Calcitonin Gene Related Peptide