Síndrome do gucagonoma em cão

O eritema necrolítico migratório é rara dermatose caracterizada por lesões erodo-ulcerativas e crostosas em áreas intertriginosas, junções mucocutâneas, superfícies articulares e de apoio crônico, que tem sido descrita em seres humanos, cães, gatos e rinocerontes. Sua etiologia tem sido relacionada a neoplasias pancreáticas, mormente das células alfa produtoras de glucagon, e a graves doenças do parênquima hepático ou gastroentérico. Relata-se o caso de um cão com necrose epidérmica metabólica secundária a glucagonoma, que apresenta fortes similaridades com a síndrome do glucagonoma em humanos.

Rural-urban migration in D-dimensional lattices

The rural-urban migration phenomenon is analyzed by using an agent-based computational model. Agents are placed on lattices which dimensions varying from d = 2 up to d = 7. The localization of the agents in the lattice defines that their social neighborhood (rural or urban) is not related to their spatial distribution. The effect of the dimension of lattice is studied by analyzing the variation of the main parameters that characterizes the migratory process. The dynamics displays strong effects even for around one million of sites, in higher dimensions (d = 6, 7).

Thymic microenvironmental alterations in experimentally induced diabetes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Karyotype and NOR conservatism with heterochromatin reorganization in Neotropical Bryconids

Cytogenetic studies on Bryconid fishes have shown the occurrence of karyotype and NOR conservatism and heterochromatin reorganization. The present data on three species representative of the migratory genus Brycon corroborate the hypothesis according to which conservative patterns of karyotypic evolution can be related to high levels of vagility and large populational size in Neotropical freshwater fishes.

Fatores genéticos na psoríase glossite migratória benígna: Revisão da literatura sobre a associação com o complexe HLA

The genetics of psoriasis and benign migratory glossitis has relationship with the major HLA. The authors reviewed the literature about the association between HLA with psoriasis and benign migratory glossitis. HLA-Cw6 presents a particularly strong association, irrespective of different racial or ethnic groups, suggesting that Cw6 itself, or a closely linked gene in strong linkage disequilibrium, is the major HLA-linked susceptibility gene for psoriasis. The white Brazilian population shows the established associations between psoriasis and the HLA antigens Cw6, B13 and B17 reported in several Caucasian populations, and shows association between benign migratory glossitis and HLA-Cw6.

Frugivoria por aves em Cytharexyllum myrianthum cham (Verbenaceae) em áreas de pastagens de Campinas, SP

Isolated trees in pastures are now often, due to increasing devastation of forested areas, important feeding places for migratory or generalist birds. These trees serve both as food sources and as deposition sites for seeds from fruits consumed in neighboring areas. The objective of this study was to identify the avian consumers of the fruits of Cytharexyllum myrianthum trees in open pastures and describe their feeding behavior and how it influences seed dispersion. Forty two hours of observations included 198 feeding bouts of nine bird species. Turdus leucomelas (Muscicapidae) was the main consumer (28% of fruit consumption), swallowing the entire fruit. Next, was Tyrannus melancholicus (Tyrannidae, 23%), which may be the most efficient seed disperser of C. myrianthum because it regurgitates the seeds on sites far from the parent tree.

Social Panorama of Latin America 2007

Includes bibliography

Mast cells modulate the inflammatory process in endotoxin-induced uveitis

Purpose: To investigate the role of mast cells and annexin-A1 (Anxa1) in endotoxin-induced uveitis (EIU). Methods: EIU was induced by injection of lipopolysaccharide (LPS) into the paws of rats, which were then sacrificed after 24 and 48 h. To assess EIU in the absence of mast cells, groups of animals were pretreated with compound 48/80 (c48/80) and sacrificed after 24 h after no treatment or EIU induction. The eyes were used for histological studies and the aqueous humor (AqH) pool was used for the analysis of transmigrated cells and Anxa1 levels. In inflammatory cells, Anxa1 expression was monitored by immunohistochemistry. Results: After 24 h, rats with EIU exhibited degranulated mast cells, associated with elevated numbers of infiltrating leukocytes and the high expression of Anxa1 in the AqH and the neutrophils. After 48 h of EIU, the mast cells were intact, indicating granule re-synthesis, and there was a reduction of neutrophil transmigration and an increase in the number of mononuclear phagocytic cells in ocular tissues. Anxa1 expression was decreased in neutrophils but increased in mononuclear phagocytic cells. In the animals pretreated with c48/80 and subjected to EIU, mast cells responded to this secretagogue by degranulating and few transmigrated neutrophils were observed. Conclustions: We report that mast cells are a potential source of pharmacological mediators that are strongly linked to the pathophysiology of EIU, and the endogenous protein Anxa1 is a mediator in the homeostasis of the inflammatory process with anti-migratory effects on leukocytes, which supports further studies of this protein as an innovative therapy for uveitis. © 2011 Molecular Vision.

International migration and development in the Americas

Includes bibliography

Morphological Variation of Primary Reproductive Structures in Males of Five Families of Neotropical Bats

Bats present unique features among mammals with respect to reproduction, and although neotropical bats do not have a hibernation period, many of their reproductive characteristics vary seasonally and interspecifically. Thus, this work aimed to examine the reproductive structures of 18 species belonging to five families of Brazilian bats. The gross anatomy of the testes varied little; however, the epididymis of Emballonuridae and Vespertilionidae showed exceptional structures with a large elongation of the caudal region. We observed a wide variation in the positioning of the testes: Phyllostomidae and Noctilionidae presented external testes; Emballonuridae and Molossidae presented migratory testes that may be in intra-abdominal or external positions; and Vespertilionidae displayed scrotal testes. In the histological evaluation, we observed a different pattern in vespertilionid species, with testicular regression and sperm retention/storage in the cauda epididymis in the five species analyzed. Similar testicular regression was observed in Molossops temminckii; however, sperm retention/storage was not observed in this species. These data suggest that although the species analyzed are tropical species that do not present a prolonged period of torpor (hibernation), they still maintain a period of seminiferous tubule regression and sperm storage very similar to that observed in hibernating bats. © 2012 Wiley Periodicals, Inc.

Intraregional migration of skilled manpower

Includes bibliography

Trade unions in the "South" in the era of globalization

Includes bibliography

International migration, human rights and development in Latin America and the Caribbean: summary and conclusions

Includes bibliography

Frequency and genetic diversity of the MAT1 locus of Histoplasma capsulatum isolates in Mexico and Brazil

The MAT1-1 and MAT1-2 idiomorphs associated with the MAT1 locus of Histoplasma capsulatum were identified by PCR. A total of 28 fungal isolates, 6 isolates from human clinical samples and 22 isolates from environmental (infected bat and contaminated soil) samples, were studied. Among the 14 isolates from Mexico, 71.4% (95% confidence interval [95% CI], 48.3% to 94.5%) were of the MAT1-2 genotype, whereas 100% of the isolates from Brazil were of the MAT1-1 genotype. Each MAT1 idiomorphic region was sequenced and aligned, using the sequences of the G-217B (+mating type) and G-186AR (-mating type) strains as references. BLASTn analyses of the MAT1-1 and MAT1-2 sequences studied correlated with their respective+ and-mating type genotypes. Trees were generated by the maximum likelihood (ML) method to search for similarity among isolates of each MAT1 idiomorph. All MAT1-1 isolates originated from Brazilian bats formed a well-defined group; three isolates from Mexico, the G-217B strain, and a subgroup encompassing all soil-derived isolates and two clinical isolates from Brazil formed a second group; last, one isolate (EH-696P) from a migratory bat captured in Mexico formed a third group of the MAT1-1 genotype. The MAT1-2 idiomorph formed two groups, one of which included two H. capsulatum isolates from infected bats that were closely related to the G-186AR strain. The other group was formed by two human isolates and six isolates from infected bats. Concatenated ML trees, with internal transcribed spacer 1 (ITS1) -5.8S-ITS2 and MAT1-1 or MAT1-2 sequences, support the relatedness of MAT1-1 or MAT1-2 isolates. H. capsulatum mating types were associated with the geographical origin of the isolates, and all isolates from Brazil correlated with their environmental sources. © 2013, American Society for Microbiology. All Rights Reserved.

Biologia reprodutiva e qualidade do sêmen de reprodutores de curimbatá, Prochilodus lineatus, em condições distintas de manejo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)