Paracoccidioides brasiliensis AND Paracoccidioides lutzii, A SECRET LOVE AFFAIR

SUMMARYTo commemorate Prof. Carlos da Silva Lacaz's centennial anniversary, the authors have written a brief account of a few, out of hundreds, biological, ecological, molecular and phylogenetic studies that led to the arrival of Paracoccidioides lutzii, hidden for more than a century within Paracoccidioides brasiliensis. Lacaz's permanent interest in this fungus, and particularly his conviction on the benefits that research on paracoccidioidomycosis would bring to patients, were pivotal in the development of the field.

Epidemiologia da doença de Chagas no Ceará XIII - persistência da transmissão em área desinsetizada

Foi estudado o Município de Morada Nova, desinsetizado de 1972 a 1974, verificando-se aí os seguintes fenômenos: manutenção do ciclo de transmissão em ecótopos artificiais domésticos e peridomésticos e estudados ecótopos naturais onde se desenvolve uma intensa transmissão de T. cruzi. Nesses ecótopos foram capturados triatomíneos que sugaram homem, cão e gato, mostrando a relação que pode existir entre ele e o ciclo doméstico. Os triatomíneos da região são no entanto pouco antropófilos, justificando assim a baixa densidade da endemia chagásica (2,4%).

Alguns Helmintos de peixes do litoral norte fluminense - II

De 62 autópsias realizadas empeixes, capturados no litoral de Macaé, Estado do Rio de Janeiro, os autores coletaram alguns exemplares de helmintos cujo estudo permitiu a descrição de 2 espécies novas: Cucullanus rougetae e Raphidascaris yamagutii; a redescrição de Pseudopecoelus elongatus (Yamaguti, 1938) em novo hospedeiro, as referências de Procamallanus macaensis Vicente e Santos, 1972, e Catarinatrema verrucosum Freitas & Santos, 1971 e a descrição de 2 larvas de nematódeos e 1 de cestódeo que não puderam ser determinadas até espécie. A excursão emque foram colecionados os helmintos acima relacionados foi realizada em janeiro de 1973 por um de nós (elias dos Santos) permitindo a continuação de trabalho anterior sobre helmintos de peixes marinhos daquele município fluminense.

On Dichelyne (Cucullanellus) elongatus (Tornquist, 1931) Petter, 1974: South American correlated species (Nematoda, Cucullanidae) and some other helminths of micropogonias furnieri (Desmarest, 1823) (Pisces, Sciaenidae)

Dichelyne (Cucullanellus) elongatus (Tomquist, 1931) Petter, 1974, from Venezuela, of which D.(C.) amaurincai (Freitas, Vicente & Ibáñez, 1969) Petter, 1974 is proposed as a junior synonym, is redescribed and comments on the present status of the remaining species under the group, namely D.(C.) dichelyneformes (Szidat, 1950) Petter, 1974, D.(C.) rodriguesi (Pinto, Fábio & Noronha, 1970) Petter, 1974 and D.(C.) travassosi (Guimarães & Cristofaro, 1974), occuring in South America are made. Dollfusentis chandleri Golvan, 1969 (Acanthocephala, Illiosentidae), Poecilancistrium caryophyllum (Diesing, 1850)(Cestoidea, Otobothriidae) and Callitetrarhynchus gracilis (Rudolphi, 1819)(Cestoidea, Dasyrhynchidae) as well as larval forms of Echinocephalus sp. (Nematoda, Gnathostomatidae) and Contracaecum sp. (Nematoda, Anisakidae) are also reported.

Morfologia externa de Triatoma ryckmani Zeledón & Ponce, 1972 vista através da microscopia eletrônica de varredura

A male of Triatoma ryckmani Zeledón & Ponce, 1972, was studied by scanning electron microscopy. Only few specimens of this species are known. In this paper, some structures from the head, thorax, abdomen and distal region of the second leg are shown. Some of them could have taxonomic importance, as the oculo-ocellar region, the buccula, the anterolateral angle of the collar, the scutellum with the process longer than the main body, the stridulatory sulcus with an unusual backward vermiform area, and the tibia-tarsal articulation, with a spongy fossula. The last structure was absent in specimens previously studied (Lent & Wygodzinsky 1979). Differences between this specimen and others previously described by several authors are dicussed.

Some Aspects of the Development of Lobatostoma jungwirthi Kritscher, 1974 (Aspidogastrea) in Snails and Cichlid Fishes from Buenos Aires, Argentina

The molluscs Heleobia castellanosae and Ampullaria canaliculata and cichlid fishes were collected from an artificial pond at Tres de Febrero Park (Buenos Aires city), between June 1994 and May 1995. One hundred and eighty of 2,467 H. castellanosae examined were infected with pre-adults of Lobatostoma jungwirthi, 112 of them in concurrent infections with digeneans. L. jungwirthi was significantly more prevalent in larger snails, especially those infected with larval digeneans, but the prevalence of infection did not fluctuate significantly throughout the year. A. canaliculata and cichlids smaller than 10 cm were not infected, but larger Cichlasoma facetum harboured adults of L. jungwirthi in their intestines. Experimental infections of C. facetum and Gymnogeophagus meridionalis with pre-adult aspidogastreans obtained from H. castellanosae were successful. The development of L. jungwirthi in the snail host involves five arbitrary growth phases. Its life-cycle is heteroxenous, similar to that described for L. manteri, with H. castellanosae as the intermediate host and cichlid fishes as the definitive host in this pond.

An Autochthonous Case of Echinococcus vogeli Rausch & Bernstein, 1972 Polycystic Echinococcosis in the State of Rondônia, Brazil

The present case report refers to a patient from the State of Rondônia, North region of Brazil, attended with clinical suspicion of hepatic echinococcosis. Examination by imaging (ultrasonography and computerized tomography) revealed a conglomerate of cystic lesions, with mobile contents within the cyst. The serology (immunoblot) for Echinococcus sp. was positive (21 and 31 kDa bands). This case is the first reported in Rondônia, suggesting the need to investigate the polycystic echinococcosis in individuals with hepatic cysts from areas of tropical forest and hunting habits where wild life was present as wild dogs, cats and rodents, particularly Agouti paca (paca) and Dasyprocta aguti (agouti).

Development of Hepatozoon caimani (Carini, 1909) Pessôa, De Biasi & De Souza, 1972 in the Caiman Caiman c. crocodilus, the frog Rana catesbeiana and the mosquito Culex fatigans

The sporogony of Hepatozoon caimani has been studied, by light microscopy, in the mosquito Culex fatigans fed on specimens of the caiman Caiman c. crocodilus showing gametocytes in their peripheral blood. Sporonts iniciate development in the space between the epithelium of the insect gut and the elastic membrane covering the haemocoele surface of the stomach. Sporulating oocysts are clustered on the gut, still invested by the gut surface membrane. Fully mature oocysts were first seen 21 days after the blood-meal. No sporogonic stages were found in some unidentified leeches fed on an infected caiman, up to 30 days following the blood-meal. When mosquitoes containing mature oocysts were fed to frogs (Leptodactylus fuscus and Rana catesbeiana), cysts containing cystozoites developed in the internal organs, principally the liver. Feeding these frogs to farm-bred caimans resulted in the appearance of gametocytes in their peripheral blood at some time between 59 and 79 days later, and the development of tissue cysts in the liver, spleen, lungs and kidneys. Transmission of the parasite was also obtained by feeding young caimans with infected mosquitoes and it is suggested that both methods occur in nature. The finding of similar cysts containing cystozoites in the semi-aquatic lizard Neusticurus bicarinatus, experimentally fed with infected C. fatigans, suggests that other secondary hosts may be involved.

Descrições das fêmeas de Gypona gilba DeLong & Martinson, 1972 e de Reticana vittata Azevedo-Filho & Carvalho, 2000 (Hemiptera, Cicadellidae, Gyponinae)

The females of Gypona gilba and Reticana vittata are described and illustrated based on specimens from Rio Grandedo Sul, Brazil.

Abordagens de planejamento educacional em Cadernos de Pesquisa (1972-1986)

Estudo documental dos artigos publicados no periódico Cadernos de Pesquisa sobre planejamento educacional. Foram analisados 35 trabalhos publicados na seção Planejamento Educacional, no período compreendido entre 1972 e 1986. Buscou-se analisar os textos dentro de uma perspectiva histórica sobre o desenvolvimento do planejamento educacional na América Latina. Procedeu-se com a análise documental, definindo-se dois níveis de análise, um em relação aos elementos textuais dos artigos e outro sobre o conteúdo veiculado. No primeiro nível de análise foram identificados textos de caráter analítico, sínteses de metodologias e experiências e guias de orientação. Em relação ao segundo nível de análise, observaram-se as seguintes categorias: a primeira compreendendo o planejamento educacional subordinado ao sistema econômico; a segunda, artigos que abordam temas e reflexões sobre o planejamento educacional; e a terceira categoria, trabalhos que fazem crítica ao planejamento educacional.

Ciência da Informação: 32 anos (1972-2004) no caminho da história e horizontes de um periódico científico brasileiro

Análise da revista Ciência da Informação, do IBICT, nas suas qualidades extrínsecas e intrínsecas. As primeiras, relativas à forma, incluem as seções, padrões bibliográficos e sistema de avaliação. As características intrínsecas abrangem a análise de conteúdo dos artigos, a produtividade de autores e padrões de autoria, tendo sido constatada tanto a sua repercussão nacional quanto internacional. O processo evolutivo da Ciência da Informação, na sua transformação para formato eletrônico , potencializou a disseminação e acesso universal à informação. Os resultados demonstram que o periódico Ciência da Informação é um espaço de discussão de temas relevantes e atuais da área, nos seus avanços, contribuindo para a consolidação e expansão da Ciência da Informação no Brasil.

Epístolas Sacrílegas. Las declaraciones públicas de líderes evangélicos chilenos ante el gobierno militar de Pinochet (1974 y 1986)

Resumen La relación establecida entre el mundo evangélico y la dictadura militar chilena es uno de los episodios más significativos de la historia política y religiosa reciente en Chile. Si bien este fenómeno ha sido investigado tanto por las ciencias sociales como por la teología, sus posturas han tendido a desarrollarse de manera desvinculada, ofreciendo una imagen parcelada de la problemática. El presente artículo intenta ser un aporte en este ámbito específico, para lo cual se ha fijado un objetivo concreto: analizar los elementos ideológicos y políticos distintivos de las declaraciones públicas realizadas por el mundo evangélico ante el gobierno militar, vinculándolas con los contextos ideológicos en los cuales se emitieron estas declaraciones. Para ello, metodológicamente se han analizado dos declaraciones fundamentales realizadas por los líderes y pastores evangélicos ante el régimen militar chileno (fuentes primarias), lo cual permitirá complejizar la imagen que se posee sobre la relación entre el mundo evangélico y la dictadura militar chilena.

Thymocyte migration: an affair of multiple cellular interactions?

Cell migration is a crucial event in the general process of thymocyte differentiation. The cellular interactions involved in the control of this migration are beginning to be defined. At least chemokines and extracellular matrix proteins appear to be part of the game. Cells of the thymic microenvironment produce these two groups of molecules, whereas developing thymocytes express the corresponding receptors. Moreover, although chemokines and extracellular matrix can drive thymocyte migration per se, a combined role for these molecules appears to contribute to the resulting migration patterns of thymocytes in their various stages of differentiation. The dynamics of chemokine and extracellular matrix production and degradation is not yet well understood. However, matrix metalloproteinases are likely to play a role in the breakdown of intrathymic extracellular matrix contents. Thus, the physiological migration of thymocytes should be envisioned as a resulting vector of multiple, simultaneous and/or sequential stimuli involving chemokines, adhesive and de-adhesive extracellular matrix proteins, as well as matrix metalloproteinases. Accordingly, it is conceivable that any pathological change in any of these loops may result in the alteration of normal thymocyte migration. This seems to be the case in murine infection by the protozoan parasite Trypanosoma cruzi, the causative agent of Chagas' disease. A better knowledge of the physiological mechanisms governing thymocyte migration will provide new clues for designing therapeutic strategies targeting developing T cells.

A industrialização da pauta de exportação brasileira entre 1964 e 1974: novos dados e índices para o comércio exterior brasileiro do período

This paper analyses the effects on Brazil's trade indices of the rising share of industrial products in Brazil's exports in the period from 1964 to 1974. New price and quantity indices of Fisher for Brazil's exports and imports of industrial and non-industrial goods have been especially constructed for this period, in order to obtain methodologically consistent series of indexes from 1964 to 2005. The market-share-constant model was applied to analyze the effects of different groups of products on Brazil's export revenues between 1964 and 1974.