Ultrastructure of Trypanosoma cruzi in the rectum of Rhodnius prolixus

Sanabria, Antonio

doi:10.1016/0014-4894(66)90078-6

Cited by 28 publications

(7 citation statements)

References 10 publications

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“…I n liver, P-420 is the solubilized Table I and Fig. In fact, most of the mitochrondrial structures reported by him (16,17) and the similar ones observed in the present study, had very few (or no) christae, which are known to contain the a-c cytochrome system. The absence of cytochrome c is remarkable and confirms previous spectroscopic observations with whole cells (1-5).…”

supporting

confidence: 80%

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Microsomal Hemoproteins in Trypanosoma cruzi

Boiso

Stoppani

1971

Experimental Biology and Medicine

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supporting

confidence: 80%

“…The CObinding effect may be explained by a hemoprotein similar to liver hemoprotein P-420 (19,20). Those negative results do not necessarily oppose Sanabria's observations ( 16,17). 2.…”

mentioning

confidence: 56%

Microsomal Hemoproteins in Trypanosoma cruzi

Boiso

Stoppani

1971

Experimental Biology and Medicine

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“…brucei (16), Anderson and Ellis in T . Zewisi (1), and others, and by Sanabria (12) in the metacyclic forms of T . cruzi obtained from the insect vector Rhodnius prolixus.…”

Section: Discussionmentioning

confidence: 94%

“…cruzi was studied in the host cell (Figs. 5,6,7,12), at the end of the parasite's intracellular cycle, and in free trypanosomes of the tissue culture (Figs. 8,9,10,11,13,14).…”

Section: Observationsmentioning

confidence: 99%

The Fine Structure of the Flagellum and Kinetoplast‐Chondriome of Trypanosoma (Schizotrypanum) cruzi in Tissue Culture*

Meyer

1968

The Journal of Protozoology

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SYNOPSIS. Trypanosoma cruzi in tissue cultures was studied with the electron microscope after double fixation in glutaraldehyde and osmium tetroxide, and embedding in Epon. Previous findings on its fine structure were confirmed, and some new structures were found in the flagellum and kinetoplast‐chondriome. In the flagellum, an intraflagellar body was found, similar to that observed in other trypanosomes, beginning at the base of the flagellum and running along the axial fibre bundle thruout its length. The axial fibre bundle is formed by interconnecting tubules, the outer ones apparently smooth, the inner ones with a helical substructure. Lateral extensions from the outer tubules in the flagellar bundle seem to enter the intraflagellar body. The kinetopiast in the leishmania bodies has the same electrondense structure described before. In the trypanosome form it has assumed a large spherical shape, in which the formerly short, compressed fibres have grown in length, are more dispersed and have an irregular shape. They are oriented in the direction of the body's length in parallel array. The whole formation is continuous with a long mitochondrion which begins in the region of the nucleus and extends up almost to the tip of the trypanosome. The matrix of the kinetoplast in these forms is electron‐transparent; the matrix of the mitochondria is rather dense. In a few extracellular trypanosomes, a special structure was found in which the kinetoplast is composed of electron‐transparent formations, arranged in orderly horizontal lines quite similar to the mitochondrial cristae of the parasite. The significance of this structure is uncertain.

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“…One of the most obvious was the difference concerning the dis tance between the nucleus and the kinetoplast which is smaller in the short epimastigotes. Considering that the differentiation of T. cruzi toward the metacyclic forms occurs through the progressive movement of the kineto plast in the direction of the posterior extremity of the para site (Sanabria, 1966 andDvorak, 1976) we are considering the possibility of an evolution of the large epimastigotes from the short ones.…”

Section: Discussionmentioning

confidence: 99%