Further studies of Trichomonas Vaginalis with transmission and scanning electron microscopy.

Ovcinnikov, N M; Delektorskij, V V; Turanova, E N; Yashkova, G N

doi:10.1136/sti.51.6.357

Cited by 18 publications

(16 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several workers have claimed to have seen 1 ;.C ¶. D A Street, C Wells, D Taylor-Robinson, and J P Ackers mycoplasmas within T vaginalis.34 Mycoplasmas, however, lack a cell wall, vary in size and shape, and have no characteristic internal structure so that within cells they may be difficult to identify, even by high power electron microscopy.…”

Section: Discussionmentioning

confidence: 99%

Interaction between Trichomonas vaginalis and other pathogenic micro-organisms of the human genital tract.

Street¹,

Wells²,

Taylor‐Robinson³

et al. 1984

Sexually Transmitted Infections

View full text Add to dashboard Cite

SUMMARY Trichomonas vaginalis organisms were mixed with suspensions of Neisseria gonorrhoeae, Mycoplasma hominis or Chiamydia trachomatis to allow ingestion of these microorganisms by the trichomonads. Culture studies indicated that gonococci and mycoplasmas were ingested and that the number of intracellular viable organisms decreased rapidly, most gonococci being killed within six hours and all mycoplasmas within three hours. Electron microscopy revealed phagocytic uptake and destruction of these two micro-organisms within the trichomonads, gonococcal degradation being associated with lysosomal enzyme activity. There was no evidence from cultural or electron microscopy studies that C trachomatis organisms persisted in mixed culture with T vaginalis.

show abstract

Section: Discussionmentioning

confidence: 99%

Interaction between Trichomonas vaginalis and other pathogenic micro-organisms of the human genital tract.

Street¹,

Wells²,

Taylor‐Robinson³

et al. 1984

Sexually Transmitted Infections

View full text Add to dashboard Cite

show abstract

“…In 1975, Ovcinnikov et al showed high phagocytic activity and endocytobiosis of bacteria, both Gram-negative and Gram-positive, by Trichomonas vaginalis. Street et al (1984) showed that Neisseria gonorrhoeae, Mycoplasma hominis and Chlamydia trachomatis attach to and are ingested by T. vaginalis.…”

Section: Introductionmentioning

confidence: 99%

Growth kinetic study of Tetratrichomonas didelphidis isolated from opossum Lutreolina crassicaudata and interaction with a prokaryotic cell

Tasca

DeCarli

2001

Parasitol Res

View full text Add to dashboard Cite

Tetratrichomonas didelphidis is a flagellate protozoan found in the intestine, cecum and colon of opossums, Didelphis marsupialis. This work reports the occurrence of T. didelphidis in another opossum species, Lutreolina crassicaudata. The strain was cultivated in monoxenic culture with Escherichia coli in Diamond (TYM) medium without maltose and with starch solution (trypticase-yeast extract-starch), pH 7.5 at 28 degrees C. The growth kinetic study of T. didelphidis showed a longer time of growth and a higher number of trophozoites when inoculated with E. coli than in axenic cultures, in aerobiosis as well as under anaerobic conditions. Scanning electron microscopy showed that the bacteria adhered throughout the protozoan body and probably evoked endocytic channels, strongly suggesting the existence of endocytosis of rods by T. didelphidis. Our preliminary results suggest that the in vitro culture of T. didelphidis depends on E. coli as a growth-promoting partner, and requires monoxenic cultivation.

show abstract

“…It is common knowledge that Trichomonas Vaginnlis, a parasitic protozoon of the human Urogenital tract, is able to ingest bacterial cells and Various particles in vitro and in vivo by a mechanism similar to that observed in other Phagocytic cells (1)(2)(3)(4)(5). As revealed by electron microscopy, phagocytosis in Tricf~omonas Vaginalis occurs preferentially in the posterior two-thirds of the cell body (4).…”

mentioning

confidence: 96%

In vitro phagocytic interaction betweenTrichomonas vaginalis isolates and bacteria

Juliano

Cappuccinelli

Mattana

1991

Eur. J. Clin. Microbiol. Infect. Dis.

View full text Add to dashboard Cite

The phagocytic activity of 12 Trichomonas vaginalis isolates against both gram-positive bacteria (Staphylococcus aureus ATCC 25923, Lactobacillus spp.) and gram-negative bacteria (Enterobacter cloacae ATCC 13047, 5 strains of Escherichia coli, Pseudomonas aeruginosa ATCC 27853) was studied. Results showed that all the isolates were able to ingest Staphylococcus aureus to a variable degree, and almost all of them showed phagocytic activity against Pseudomonas aeruginosa. Furthermore, experiments with a restricted number of isolates of Trichomonas vaginalis showed that they phagocytized, often very effectively, human vaginal lactobacilli. Only in some cases was the addition of serum essential for bacteria ingestion. Phagocytic uptake of Escherichia coli and Enterobacter cloacae was not detectable under the experimental conditions used. It is concluded that phagocytosis may be involved in changes in vaginal biocenosis during the early stages of trichomoniasis.

show abstract

Further studies of Trichomonas Vaginalis with transmission and scanning electron microscopy.

Cited by 18 publications

References 7 publications

Interaction between Trichomonas vaginalis and other pathogenic micro-organisms of the human genital tract.

Interaction between Trichomonas vaginalis and other pathogenic micro-organisms of the human genital tract.

Growth kinetic study of Tetratrichomonas didelphidis isolated from opossum Lutreolina crassicaudata and interaction with a prokaryotic cell

In vitro phagocytic interaction betweenTrichomonas vaginalis isolates and bacteria

Contact Info

Product

Resources

About