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Lutzomyia longipalpis:pH in the Gut, Digestive Glycosidases, and Some Speculations uponLeishmaniaDevelopment
- Source :
- Experimental Parasitology. 90:212-219
- Publication Year :
- 1998
- Publisher :
- Elsevier BV, 1998.
-
Abstract
- Screening for digestive glycosidases in different parts of the gut and associated organs of Lutzomyia longipalpis is reported. Searches for the enzymes were made in blood-fed and non-blood-fed females and the enzymes were characterized as soluble or membrane-bound molecules. A total of four different activities were detected, corresponding to the following specificities: an alpha-glucosidase, an N-acetyl-beta-d-glucosaminidase, an N-acetyl-beta-d-galactosaminidase, and an alpha-l-fucosidase. Their possible role and importance for Leishmania development are discussed and the alpha-glucosidase enzyme was partially characterized. The pH inside the gut of non-blood-fed phlebotomines was measured with pH indicator dyes. The pH ranges obtained for crop, midgut, and hindgut were, respectively, higher than pH 6, pH 6, and lower than pH 6. A hypothesis concerning these data and Leishmania development is proposed.
- Subjects :
- Glycoside Hydrolases
Immunology
Biology
Substrate Specificity
Microbiology
Nitrophenols
chemistry.chemical_compound
pH indicator
Animals
Glycoside hydrolase
Leishmania
chemistry.chemical_classification
Kinetoplastida
Hindgut
Midgut
General Medicine
Hydrogen-Ion Concentration
biology.organism_classification
Insect Vectors
Infectious Diseases
Enzyme
Solubility
Biochemistry
chemistry
Carbohydrate Metabolism
Digestion
Female
Parasitology
Psychodidae
Subjects
Details
- ISSN :
- 00144894
- Volume :
- 90
- Database :
- OpenAIRE
- Journal :
- Experimental Parasitology
- Accession number :
- edsair.doi.dedup.....7bc54161a831104f589ede0a90938300