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M F de Souza

Publications and source records attributed to M F de Souza.

7 recordsLinked to original sources
PubMed2000

Distribution of phlebotomine sand flies (Diptera: Psychodidae) in the state of Rio Grande do Norte, Brazil.

Visceral and cutaneous leishmaniasis are major endemic diseases in northeast Brazil. The objective of the current study was to determine the species and geographic distribution of potential sand fly vectors of Leishmania in the state of Rio Grande do Norte. Sand flies were captured using CDC light traps in 30 municipalities distributed throughout the 8 geographic zones of the state. Twelve Lutzomyia species were identified. Lutzomyia longipalpis Lutz & Neiva was the most prevalent and accounted for 85.59% of the sand fly captured. The remaining species were distributed as follows: L. evandroi Costa Lima & Antunes (10.83%), L. oswaldoi Mangabeira (0.99%), L. sallesi Galvão & Coutinho (0.58%), L. intermedia Lutz & Neiva (0.53%), L. lenti Mangabeira (0.53%), L. migonei França (0.49%), L. walkeri Newstead (0.24%), L. goiana Martins, Falcão & Silva (0.15%), L. samueli Deane (0.04%), and L. capixaba Dias, Falcão, Silva & Martins (0.03%), and L. peresi Mangabeira (0.01%). L. longipalpis, which is known to be a vector of Leishmania chagasi Cunha & Chagas (L. donovani chagasi), was captured in 93% of municipalities distributed across all geographical areas of the state and its distribution was independent of obvious climatic and topographic parameters. It was identified in all municipalities where human visceral leishmaniasis had been reported. In contrast, climate and topography appeared to be important for other Lutzomyia species. For example, L. intermedia and L. migonei, which are known to transmit Leishmania braziliensis Viana, were geographically restricted. They were captured in municipalities where cases of cutaneous and mucosal leishmaniasis had been reported. The widespread distribution of L. longipalpis, its adaptation to peridomicillary settings, and its ability to transmit L. (d.) chagasi suggest that a large number of persons may be at risk of acquiring visceral leishmaniasis in the state of Rio Grande do Norte, Brazil.

Animals↗
PubMed1989

Further studies on the cytoskeleton of resident, stimulated and activated macrophages.

The three-dimensional organization of the cytoskeleton of resident, thioglycolate-elicited and activated macrophages was studied by indirect immunofluorescence microscopy and by transmission electron microscopy of platinum-carbon replicas of Triton X-100 extracted cells and whole extracted cells critical point dried. Examination of the replicas showed with great clarity the organization of cytoplasmic filaments and microtubules. Cytoskeletal preparations revealed filamentous structures around the centrioles, and dense granules dispersed within the lattice of filaments of activated macrophages. X-ray microanalysis showed that they concentrate osmium. Indirect immunofluorescence microscopy revealed filamentous and/or dispersed tubulin, actin, vimentin and myosin-containing structures in the cytoplasm of the macrophages.

Animals↗
PubMedDate not supplied

[Self-care in treatment following the Ilizarov method--a case study].

The authors performed a case study using Dorothea Orem's self-care model as a framework in the treatment by llizarov's method, administering care and specific orientations for recovery and prevention of further disorders. The operational system of the study consisted of procedures related to demands of universal and therapeutic care during hospitalization. Demands were detected in the pre-operative and care developed in the postoperative phase, providing the patient with the knowledge and achievement of the necessary procedures to be followed at home.

Adult↗