Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Ultrastructure of endocrine cells from the abdominal midgut epithelium of Lutzomyia longipalpis (Diptera : psychodidae)
Autore:
Leite, ACR; Evangelista, LG;
Indirizzi:
Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Parasitol, BR-31270901 Belo Horizonte, MG, Brazil Univ Fed Minas Gerais Belo Horizonte MG Brazil BR-31270901 BC, MG, Brazil
Titolo Testata:
JOURNAL OF MEDICAL ENTOMOLOGY
fascicolo: 5, volume: 38, anno: 2001,
pagine: 749 - 752
SICI:
0022-2585(200109)38:5<749:UOECFT>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEISHMANIA-CHAGASI; MORPHOLOGY; MOSQUITO; VECTOR;
Keywords:
Lutzomyia longipalpis; endocrine cell; midgut; phlebotomine; Psychodidae; transmission electron microscopy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Leite, ACR Univ Fed Minas Gerais, Inst Ciencias Biol, Dept Parasitol, Caixa Postal 486, BR-31270901 Belo Horizonte, MG, Brazil Univ Fed Minas Gerais Caixa Postal 486 Belo Horizonte MG Brazil BR-31270901 BC
Citazione:
A.C.R. Leite e L.G. Evangelista, "Ultrastructure of endocrine cells from the abdominal midgut epithelium of Lutzomyia longipalpis (Diptera : psychodidae)", J MED ENT, 38(5), 2001, pp. 749-752

Abstract

Transmission electron microscopy (TEM) was used to study two types of endocrine cells from the midgut of adult female Lutzomyia longipalpis (Lutz & Neiva). Endocrine cells rarely have been observed in Nematocera, even using TEM, and were present in small numbers dispersed among the monolayer of midgut digestive epithelial cells. Triangular shaped "closed" cells were observed along the basement membrane, bounded on each side by digestive cells; these cells closed distally before reaching the epithelial lumen. These endocrine cells appeared to deliver active granules that were secreted through a cellular membrane into the hemolymph. A second cell type occupied a similar position to the closed cells, but opened into the midgut lumen via microvilli, where the secretory products may be delivered. Each cell type possessed both electron-lucent and electron-dense vesicles with secretory granules which may indicate different stages in maturation and activity. These granular secretory products are probably peptidergic substances, with secretion mediated by diet via basal and baso-lateral receptors that were bound to membranes or microvilli.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 22:04:35