Showing papers by "Oswaldo Cruz Foundation published in 1973"
TL;DR: Dosis diarias de 320,000 UI de vitamina D2Y 40 mg de colesterol, disueltos en 1.5 ml de aceite de oliva, administradas por via oral y por kg de peso, durante 5 dias consecutivos, producen en las ratas precoces y extensas lesiones ateroarterioscleróticas.
Abstract: Dosis diarias de 320.000 UI de vitamina D2Y 40 mg de colesterol, disueltos en 1.5 ml de aceite de oliva, administradas por via oral y por kg de peso, durante 5 dias consecutivos, producen en las ratas precoces y extensas lesiones ateroarterioscleroticas.
21 citations
TL;DR: The rpesence of one male of diminished dimensions, found in close relationship with the females of Ph. lateolabracis is reported, and the possibility of this small nematode be the male of this species is admitted.
Abstract: In this paper the authors refere Philometra lateolabracis Yamaguti, 1935 for the first time from the Atlantic Ocean also as a new host record. They report the rpesence of one male of diminished dimensions, found in close relationship with the females of Ph. lateolabracis; as the male of this species is unknown, they admit the possibility of this small nematode be the male of this species.
19 citations
TL;DR: A new species of the genus Contracaecum Railliet et Henry, 1912 is proposed, differing from the latter by the following aspects: the males have unequal spicules and the females have a short ovijector and parallel uteri directed backward and the eggs are smaller.
Abstract: In this paper the author proposes a new species of the genus Contracaecum Railliet et Henry, 1912. Of the species under Contracaecum, Contracaecum clavatum (Rudolphi, 1809) Baylis, 1920 is the nearest to Contracaecum fortalezae sp. n. differing from the latter by the following aspects: The males have unequal spicules. The females have a short ovijector and parallel uteri directed backward and the eggs are smaller. In both sexes the intestinal cecum is always short and the ventricular posterior appendix is always long, while Contracaecum clavatum presents these structures in an inverse way, considering the lenght of them. Besides, the thorn-like formations at the posterior end of the body are different.
18 citations
TL;DR: From 149 fishes examined the authors obtaied several helminths in Macae Coast, Rio de Janeiro State, Brazil, and described a new species, which is now enclosed is Rhipidocotyle fluminensis sp.
Abstract: From 149 fishes examined the authors obtaied several helminths in Macae Coast, Rio de Janeiro State, Brazil. A new species is presently described and some only refered. The helminths were recovered from February, 1970, to December, 1971. The authors give general parasitism by helminthic groups and the percentage is calculated based only on the infested fishes. In preceding papers the authors had described two new species, that here are only refered: Procamallanus macaensis Vicente & Santos, 1972 and Pulchrascaris caballeroi Vicente & Santos, 1972. the new species now enclosed is Rhipidocotyle fluminensis sp. n. Sterrhurus imocavus Looss, 1907 and Cucullanus cirratus Mueller, 1777 are given to be new host record and new geographical distribution. Pleorchis mollis Poche, 1926, Lecithochirium microstomum Chandler, 1935, Homalometron longulum Travassos, Freitas & Buhrnheim, 1965, Porrocaecum secundum Chandler, 1935 are also new host records. The authors give original camera lucidan drawings of some of the species here presented.
16 citations
TL;DR: The authors revise Strongyluris oscari Travassos, 1923, after studying the types and material from Fortaleza, Ceara State, rectify the original description and propose StrongylURis sai TravASSos, 1926 as its synonym.
Abstract: The authors revise Strongyluris oscari Travassos, 1923, after studying the types and material from Fortaleza, Ceara State, rectify the original description and propose Strongyluris sai Travassos, 1926 as its synonym.
13 citations
TL;DR: Pseudanisakis rajae is for the first time reported infecting Raja clavata and Beryx decadactylus is a new host record for Ascarophis morrhuae.
Abstract: Twenty one fishes collected in Continental Portuguese Coast and North African Coast have been examined for helminths. We found seven of them infected with nematodes (33,3%). Their hosts as well as the species recovered and incidences of infection are as follows: six samples of Beryx decadactylus, in one of them we recovered Ascarophis morrhuae (16,6%); three sample of Lethrinus atlanticus, in one of them we recovered Luzonema cruzi gen. n. sp. n. (33,3%); three samples of Scyliorhynus canicula, in two of them we recovered Proleptus obtusus (66,6%); eight samples of Raja clavata, in one of them we recovered Proleptus robustus (12,5%) and in other Pseudanisakis rajae (12,5%); one sample of Conger conger from wich we recovered Cucullanus longispiculum sp. n. (100%). Pseudanisais rajae is for the first time reported in Atlantic Ocean. Pseudanisakis rajae is for the first time reported infecting Raja clavata and Beryx decadactylus is a new host record for Ascarophis morrhuae.
10 citations
TL;DR: Affinities between Toddia and Pirhemocyton including the type of inclusion oppose to the original descriptions, turning doubtfull this generic separation are discussed.
Abstract: Among 683 snakes from several localities of Brazil, 16 (2,4%) presented in their blood (in mature or immature red cells) Toddia or Pirhemocyton. We named provisorily Toddia the parasites found in Bothrops moojeni, B. pradoi, B. jararaca and Chironius flavolineatus and Pirhemocyton those found in B. alternatus; we give the first reference in these hosts. These parasites were comparatively studied in view to establish the range of their relationship. With Toddia from B. moojeni we attempted nucleic acids by cytochemical methods and we found only DNA. The most affinities among the parasite that we have studied remained on the characters of the chromatic corpuscles and the cellular changes determined by them; we observed almost total identity among the parasites of same species of snakes. We observed the coexistence of globoides, crystalloids and intermediate forms between them allied to the parasites of B. pradoi and B. alternatus; in C. flavolineatus we found younder cristals, scarce intermediary forms between these and globoids. Affinities between Toddia and Pirhemocyton including the type of inclusion oppose to the original descriptions, turning doubtfull this generic separation. We also discuss the basis of the establishment of the species and the possible viral nature of these parasites.
7 citations
TL;DR: The taxonomic aspects related to this genus are discussed and the authors agree to the point of view of Mackerras 1961, and Marquardt 1967, about the identity of Pirhemocyton and Toddia.
Abstract: Toddia, a genus created by Franca 1911 for an organism found in the erythrocytes of an anuran amphibian, has a particular structure and the problem of its viral relationship of protozoa nature is an important point which has recently been discussed Attempt to resolve this problem must be made using ultrastructure and cytochemical studies Our results have shown a Feulgen positive reaction and a Methyl-Green positive reaction for this organism, chiefly in the beginning of the infection At the end of the infection the particles are greater than that in the beginning but the reactions above cited are generaly wakly positive or negative We have also employed the Acridine orange method in the characterization of DNA and the results are positive too Further histochemical studies are necessary to determine the true nature of the material observed in this study We have also studied the development of this organism and its pathogenic effects have been confirmed by experimental inoculation The alterations in the blood of the host were observed and we noted that the nucleus of the red blood cells is severely disturbed during the development of the infection The experimental inoculation (in Leptodactylus and Bufo) have demonstred specific infectivety which is generaly hard, finishing with the death of the host The taxonomic aspects related to this genus are discussed and the authors agree to the point of view of Mackerras 1961, and Marquardt 1967, about the identity of Pirhemocyton and Toddia We need more research to stablish the viral nature of this organism
7 citations
TL;DR: A study of five monogenetic trematodes of the family Capsalidae Baird, 1853, and proposes a new species of the genus Allomegalocotyle by the morphology of the haptoral hooks, the position of the vaginal aperture and the big external seminal vesicle.
Abstract: In this paper we make a study of five monogenetic trematodes of the family Capsalidae Baird, 1853. We describe two new species of the genus Benedenia Diesing, 1858, Benedeniinae Johnston, 1931: Benedenia pompatica sp. n., which is very similar to Benedenia sciaenae (Beneden, 1852) abd differs from it mainly by the structure of the second and third pair of the haptoral hooks; and Benedenia innobilitata sp. n. near to Benedenia jaliscana Bravo-Hollis, 1951 does not have the armed cirrus, proper to the last and the structure and position of the vagina is also a considered characteristic. For the subfamily Trochopodinae (Price, 1936) we give new hosts: Lepidotrigla cavillone for Trochopus pini (Beneden & Hesse, 1863) and Serranus cabrilla for Megalocotyle grandiloba Paperna & Kohn, 1964, and we also redescribe and illustrate them. Under this subfamily we also propose a new species of the genus Allomegalocotyle (Robinson, 1961) by the morphology of the haptoral hooks, the position of the vaginal aperture and the big external seminal vesicle.
6 citations
TL;DR: Microanotomy and histology of the ovary of Triatoma infestans are described under the view point of its funcion.
Abstract: Microanotomy and histology of the ovary of Triatoma infestans are described under the view point of its funcion The ovary is of the meroistic-telotrophic type The Tunica propria is a dobble membrane, the internal one divides the germarium from the therminal filament The stratum germinativum is limited to a strait zone behind the volumous group of food cells The oocytes, within the stratum germinativum, show the prophase figures up till the synapsis, when the cromatic filaments soon desintegrate In all zones of the terminal chamber all types of cells are well individualized, there is no sign of syncytium to be found In the beginning of formation the follicle epithelium is formed by some layers of cells with only one nucleus During the growth of the oocyte, the epithelium shows only one layer of cells with two nuclei as consequence of an amitosis The pedicel of the ovariolum has a circular gland
6 citations
TL;DR: A brief account to the knowledgement of Protozoa parasitic in common Brazilian frog of the genus Leptodactylus for general students in Zoology and for investigators that use this frog as a laboratory animal.
Abstract: The main object of the present paper is to furnish a brief account to the knowledgement of Protozoa parasitic in common Brazilian frog of the genus Leptodactylus for general students in Zoology and for investigators that use this frog as a laboratory animal. Hepatozoon leptodactyli (Haemogregarina leptodactyli) was found in two species of frogs - Leptodactylus ocellatus and L. pentadactylus - in which develop schizogony whereas sporogony occurs in the leech Haementeria lutzi as was obtainded in experimental conditions. Intracellular forms have been found in peripheral circulation, chiefly in erythrocytes, but we have found them in leukocytes too. Tissue stages were found in frog, liver, lungs, spleen, gut, brain and heart. The occurence of hemogregarine in the Central Nervous System was recorded by Costa & al,(13) and Ball (2). Some cytochemical methods were employed in attempt to differentiate gametocytes from trophozoites in the peripheral blood and to characterize the cystic membrane as well. The speorogonic cycle was developed in only one specie of leech. A brief description of the parasite is given.
TL;DR: A clear separation of the four species of the genus Sloanea at palynologic basis could rot be achieved and only S. monosperma shows characteristic aspects.
Abstract: Pollen grains form 5 species of 2 genera of the family Elaeocarpaceae and from 4 species of 2 genera of the family Tiliaceae, from southern Brazil, have been studied. According to the pollen grain morphology, the two families are different as well as the studied genera. A clear separation of the four species of the genus Sloanea at palynologic basis could rot be achieved and only S. monosperma shows characteristic aspects. In the family Tiliaceae it was possible to stablish a exact palynologic difference between its species.
TL;DR: In 125 domestic cats from Guanabara and Rio de Janeiro state, Brasil, the following prevalence of Isospora was met: "I. felis", 24.0; "i. rivolta", 14.44%; and infections by both parasites, 15,2%.
Abstract: In 125 domestic cats from Guanabara and Rio de Janeiro state, Brasil, the following prevalence of Isospora was met: "I. felis", 24.0; "I. rivolta", 14.44%; and infections by both parasites, 15,2%. "I. felis" is characterized by its larger size and by a greater number of merozoites and microgametocytes and by its evolution in the epithelial cells of the intestine between the nuclei and the brush border. "I. rivolta" has a smaller size than "I. felis" and frequently envolves between the nuclei and the basal membrane. The sabin-Feldman rection in 20 cats with isosporosis was negative in 18. One cat had a weakly positive reaction (1:16) an another a positive reaction (1:64). Cat faeces stored in potassium dichromate at 2.5% with "I. felis" and/or "I. rivolta" were twice administered "per os" to seven puppies and didn't produce Isospora infection.
TL;DR: Results confirm the opportunistic character of P. carinii in rodents already well demonstrated in man and accord with recent observations but disagree with investigations made by the researchers who first studied this parasite.
Abstract: A survey was made on the incidence of Pneumocystis carinii in 361 rodents including sewer rats, albino rats, albino mice, guinea-pigs and rabbits. P. carinii was found in 4 of the 215 Rattus norvegicus examined (1,8%). These results accord with recent observations but disagree with investigations made by the researchers who first studied this parasite in the past when high indexes of infection were found. However, in 20 albino rats treated with corticosteroids (betamethazone) we found 8 positive (40%) and in 20 albino mice treated by the same way, 9 were positive for P. carinii (45%). These results confirm the opportunistic character of P. carinii in rodents already well demonstrated in man.
TL;DR: O trabalho estudamos a insulina imunoreativa no sangue, urina e semen de 138 individuos, assim como a possibilidade da existencia of correlacao entre insulinuria e proteinuria, y estabelecemos os valores oficiais no semen de amostras humanas normospermicas e azoos permicas.
Abstract: Insulin secretion coeffiecient is quite a valuable test for studying beta cell function. It was increased in obesity and acromegalics and diminished in maturity-onset diabetes and hyperlipoproteinemia type IV. We were unable in this work to establish any correlation between insulinemia and insulinuria. No relation was also observed between clearances of insulin and creatinine. Immunoreactive insulin is also present in human seminal fluid in a concentration of approximately 45,0 uU/ml.
TL;DR: A. brasiliensis sp. n. differs from the other species of the genus by presenting folicular vitellaria in almost the hole area of the posterior part of the body, by the absence of spines in vagina and in ejaculatory duct.
Abstract: In this paper the authors propose a new specie under Acanthocolpus Luhe, 1906 also reafirms this genus for the first time in Brasil. Acanthocolpus brasiliensis sp. n. differs from the other species of the genus by presenting folicular vitellaria in almost the hole area of the posterior part of the body, by the absence of spines in vagina and in ejaculatory duct. A. brasiliensis sp. n. is similar to A. orientalis Srivastava, 1939, which differs also by the size of the body, cirrus sac and vagina.
TL;DR: More evidences are brought out concerning the influence of Mn[2+] ion on the endotrophic sporulation of Bacillus licheniformis-2390 and spores obtained shown thermoresistence to 85oC during 20 minutes.
Abstract: In the present paper the authors bring out more evidences concerning the influence of Mn[2+] ion on the endotrophic sporulation of Bacillus licheniformis-2390. Vegetative cells of this bacteria could not sporulate if they were submited to a sufficient concentration of EDTA. Otherwise, this sporulatio ocurred when the vegetative forms were first protected by an excess of exogenous Mn[2+] of Zn[2+], Fe[2+] and Mg[2+]. Those spores obtained shown thermoresistence to 85oC during 20 minutes.
TL;DR: The authors have studied the morpho-biochemical properties and the sensibility at antimicrobial drugs of pseudomonas, the Pseudomonas maltophilia, isolated from vaginal secretion, and found it sensible, for the colistin chloranfenicol, gabromycin, gentamycin and nalidix acid.
Abstract: The authors have studied the morpho-biochemical properties and the sensibility at antimicrobial drugs, of specie of Pseudomonas, the Pseudomonas maltophilia, (Hugh & Ryschenkow, 1960), isolated from vaginal secretion. Since important characteristics among more of sixty-five tested, the strains studied show to be: oxidase negative and lysine decarboxylase positive; to present deoxyrononuclease activity and produced a diffusible brown pigment: acid was produced by oxidation of maltose as much in nitrogenous complex medium as in Hugh & Leifson medium and they hydrolise the esculin. the strains was sensible, for the colistin chloranfenicol, gabromycin, gentamycin and nalidix acid.
TL;DR: The results suggest an important difference between the T. rotatorium of neotropical region and that of the other regions, which are easily cultivated in subcultures.
Abstract: Different culture media were employed to isolate T. rotatorium, a common parasite in the blood of brazilian frog Leptodactylus ocellatus. Although we have isolated the parasite in three different media (SNB-9, Bone Parent and Bone Steinert media), subcultures were not obtained. Theses facts confirm the results also pointed out by Machado 1911 with T. rotatorium from hosts collected in the same region. In accordance with the factes observed in the litterature (see table I in this work) our results suggest an important difference between the T. rotatorium of neotropical region and that of the other regions, which are easily cultivated in subcultures. The culture forms present some differential aspects in T. rotatorium mainly by production of "Somatelas".
TL;DR: The authors revise the sub-family Atactorhynchinae Petrotschenko, 1956, after studying types of Floridosentis mugilis and material recovered from intestine of Mugil sp.
Abstract: In this paper, the authors revise the sub-family Atactorhynchinae Petrotschenko, 1956, after studying types of Floridosentis mugilis (Machado Filho, 1951) and material recovered from intestine of Mugil sp. from Cabo Frio, Estado do Rio de Janeiro, Brasil. They confirm what was suggested by Bullock, 1962, about a new combination for the type species of Floridosentis Ward, 1953. For this reason, they make F. elongatus, synonym of F. mugilis Machado Filho, 1951. Besides they also enlarge the subfamily diagnosis and add a table showing the maind differences between the two genera under Atactorhynchinae Petrotschenko, 1956.
TL;DR: In this article, a clinical-pathological study of six (6) cases of subacute sclerosing panencephalitis (SSPE) in order to demonstrate that the demyelinating process observed in this disease has its origin in the destruction of oligodendroglial cells by viral parasitism.
Abstract: It was made a clinical-pathological study of six (6) cases of subacute sclerosing panencephalitis (SSPE) in order to demonstrate that the demyelinating process observed in this disease has its origin in the destruction of oligodendroglial cells by viral parasitism. As we know oligodendroglial cells are responsible for the myelination in the Central Nervous System. It was made a brief historical revision of the oligodendroglial cells concept and, after the description of the six cases, we tried to demonstrate that the demyelinating process observed are the result of oligodendroglial cells destruction.
TL;DR: Assinala-se o encontro de anomalias em conchas de 90 especimens de Biomphalaria straminea, traduzidas por acentuada deformacao da ultima espiral de Curvelo, Minas Gerais, Brasil.
Abstract: Assinala-se o encontro de anomalias em conchas de 90 especimens de Biomphalaria straminea, traduzidas por acentuada deformacao da ultima espiral. Os exemplares pertencem a populacao criada em laboratorio e procedente de Curvelo, Minas Gerais, Brasil.
TL;DR: Vegetative forms of 4 strains of Toxoplasma from peritoneal fluid of mice with 3-4 days of acute infection were orally administered to 4 groups of 6 newborn and wealing kittens respectivelly, finding several of the wealing and newborn kittens were diseased and some died of systhemic toxoplasmosis.
Abstract: Vegetative forms of 4 strains of Toxoplasma from peritoneal fluid of mice with 3-4 days of acute infection were orally administered to 4 groups of 6 newborn and wealing kittens respectivelly. Each group had a control kitten. All kittens were observed for eriods of 6-20 days ans never passed in their faeces oocysts attributabel to T. gondii. On the other hand, their faces after 2-4 days in potassium dichromate at 2.5% inoculated orally in mice didn't produce Toxoplasma infection in these animals; and with exception of the cats that have had spontaneous isosporosis (I. felis and/or I. rivolta) we didn´t see evolutive forms of Coccidia in the intestinal wall of the cats. In all cat groups the toxoplasmic infection was comproved by the positivity of the dye-test (1:16 to 1:1.024) and by the isolation of toxoplasms in indicator mice inoculated with material from cat´s principal organs. Several of the wealing and newborn kittens were diseased and some died of systhemic toxoplasmosis: splenitis, hepatitis, pneumonitis, miocarditis and encephalitis, with numerous parasites.