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Benchimol M, de Souza W. Endocytosis in anaerobic parasitic protists. Mem Inst Oswaldo Cruz 2024; 119:e240058. [PMID: 39082582 PMCID: PMC11285859 DOI: 10.1590/0074-02760240058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 06/05/2024] [Indexed: 08/03/2024] Open
Abstract
The incorporation of different molecules by eukaryotic cells occurs through endocytosis, which is critical to the cell's survival and ability to reproduce. Although this process has been studied in greater detail in mammalian and yeast cells, several groups working with pathogenic protists have made relevant contributions. This review analysed the most relevant data on the endocytic process in anaerobic protists (Entamoeba histolytica, Giardia intestinalis, Trichomonas vaginalis, and Tritrichomonas foetus). Many protozoa can exert endocytic activity across their entire surface and do so with great intensity, as with E. histolytica. The available data on the endocytic pathway and the participation of PI-3 kinase, Rab, and Rho molecular complexes is reviewed from a historical perspective.
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Affiliation(s)
- Marlene Benchimol
- Universidade Federal do Rio de Janeiro, Centro Nacional de Biologia
Estrutural e Bioimagens, Rio de Janeiro, RJ, Brasil
- Universidade da Grande Rio, Duque de Caxias, RJ, Brasil
| | - Wanderley de Souza
- Universidade Federal do Rio de Janeiro, Centro Nacional de Biologia
Estrutural e Bioimagens, Rio de Janeiro, RJ, Brasil
- Universidade Federal do Rio de Janeiro, Instituto de Biofísica
Carlos Chagas Filho, Laboratório de Ultraestrutura Celular Hertha Meyer, Rio de
Janeiro, RJ, Brasil
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2
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Ibañez-Escribano A, Gomez-Muñoz MT, Mateo M, Fonseca-Berzal C, Gomez-Lucia E, Perez RG, Alunda JM, Carrion J. Microbial Matryoshka: Addressing the Relationship between Pathogenic Flagellated Protozoans and Their RNA Viral Endosymbionts (Family Totiviridae). Vet Sci 2024; 11:321. [PMID: 39058005 PMCID: PMC11281412 DOI: 10.3390/vetsci11070321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 07/12/2024] [Accepted: 07/14/2024] [Indexed: 07/28/2024] Open
Abstract
Three genera of viruses of the family Totiviridae establish endosymbiotic associations with flagellated protozoa responsible for parasitic diseases of great impact in the context of One Health. Giardiavirus, Trichomonasvirus, and Leishmaniavirus infect the protozoa Giardia sp., Trichomonas vaginalis, and Leishmania sp., respectively. In the present work, we review the characteristics of the endosymbiotic relationships established, the advantages, and the consequences caused in mammalian hosts. Among the common characteristics of these double-stranded RNA viruses are that they do not integrate into the host genome, do not follow a lytic cycle, and do not cause cytopathic effects. However, in cases of endosymbiosis between Leishmaniavirus and Leishmania species from the Americas, and between Trichomonasvirus and Trichomonas vaginalis, it seems that it can alter their virulence (degree of pathogenicity). In a mammalian host, due to TLR3 activation of immune cells upon the recognition of viral RNA, uncontrolled inflammatory signaling responses are triggered, increasing pathological damage and the risk of failure of conventional standard treatment. Endosymbiosis with Giardiavirus can cause the loss of intestinal adherence of the protozoan, resulting in a benign disease. The current knowledge about viruses infecting flagellated protozoans is still fragmentary, and more research is required to unravel the intricacies of this three-way relationship. We need to develop early and effective diagnostic methods for further development in the field of translational medicine. Taking advantage of promising biotechnological advances, the aim is to develop ad hoc therapeutic strategies that focus not only on the disease-causing protozoan but also on the virus.
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Affiliation(s)
- Alexandra Ibañez-Escribano
- Department of Microbiology and Parasitology, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (A.I.-E.); (M.M.); (C.F.-B.)
| | - Maria Teresa Gomez-Muñoz
- ICPVet Research Group, Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (M.T.G.-M.); (R.G.P.); (J.M.A.)
- Research Institute Hospital 12 de Octubre, 28041 Madrid, Spain
| | - Marta Mateo
- Department of Microbiology and Parasitology, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (A.I.-E.); (M.M.); (C.F.-B.)
- ICPVet Research Group, Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (M.T.G.-M.); (R.G.P.); (J.M.A.)
- Research Institute Hospital 12 de Octubre, 28041 Madrid, Spain
| | - Cristina Fonseca-Berzal
- Department of Microbiology and Parasitology, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (A.I.-E.); (M.M.); (C.F.-B.)
| | - Esperanza Gomez-Lucia
- Animal Viruses Research Group, Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain;
| | - Raquel Garcia Perez
- ICPVet Research Group, Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (M.T.G.-M.); (R.G.P.); (J.M.A.)
| | - Jose M. Alunda
- ICPVet Research Group, Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (M.T.G.-M.); (R.G.P.); (J.M.A.)
- Research Institute Hospital 12 de Octubre, 28041 Madrid, Spain
| | - Javier Carrion
- ICPVet Research Group, Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (M.T.G.-M.); (R.G.P.); (J.M.A.)
- Research Institute Hospital 12 de Octubre, 28041 Madrid, Spain
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Woudwyk MA, Zanuzzi CN, Nishida F, Gimeno EJ, Soto P, Monteavaro CE, Barbeito CG. Apoptosis and cell proliferation in the mouse model of embryonic death induced by Tritrichomonas foetus infection. Exp Parasitol 2015; 156:32-6. [DOI: 10.1016/j.exppara.2015.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 02/11/2015] [Accepted: 05/21/2015] [Indexed: 10/23/2022]
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Fthenakis GC, Mavrogianni VS, Gallidis E, Papadopoulos E. Interactions between parasitic infections and reproductive efficiency in sheep. Vet Parasitol 2015; 208:56-66. [PMID: 25577675 PMCID: PMC7130998 DOI: 10.1016/j.vetpar.2014.12.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This review article summarises the many reports in the literature, confirming that, in sheep, parasitic infections can adversely affect reproductive efficiency; examples, which refer to all parts of the reproductive cycle of sheep, are as follows: trichostrongylosis in ewe-lambs (which can lead to delayed attainment of puberty), myiosis of the prepuce (which can cause impediment of mating), chorioptic mange or trypanosomosis in rams (which can lead to testicular degeneration or azoospermia, respectively), trypanosomosis or sarcoptic mange in pre-conceptual ewes (which can lead to poor conception rates or reduced number of ovulations, respectively), toxoplasmosis or neosporosis in pregnant ewes (which are causes of abortion), trichostrongylosis or trematode infections in lactating ewes (which can cause reduction of milk yield and can be a risk factor for mastitis, respectively), cryptosporidiosis in newborn lambs (which can be a cause of deaths), coccidiosis in growing pre-weaned lambs (which can cause suboptimal growth rate). In other cases, the reproductive status of the animal can influence the parasitic infection; examples are as follows: the increase in faecal parasitic output during the peri-parturient period (as a consequence of the peri-parturient relaxation of immunity), the heavier trichostrongylid infections of twin lambs compared to lambs from single parities (as a consequence of developmental origin issues in twin lambs). All the above examples support the idea of presence of interactions between parasitic infections and reproductive efficiency in sheep.
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Affiliation(s)
- G C Fthenakis
- Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece.
| | - V S Mavrogianni
- Veterinary Faculty, University of Thessaly, 43100 Karditsa, Greece
| | - E Gallidis
- Laboratory of Parasitology and Parasitic Diseases, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - E Papadopoulos
- Laboratory of Parasitology and Parasitic Diseases, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Effinger L, Peddireddi L, Simunich M, Oberst R, O'Connell C, Leyva-Baca I. Pooling of cultured samples and comparison of multistate laboratory workflows with the MagMAX sample preparation system and VetMAX quantitative polymerase chain reaction reagents for detection of Tritrichomonas foetus-colonized bulls. J Vet Diagn Invest 2013; 26:72-87. [PMID: 24343558 DOI: 10.1177/1040638713510003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The objectives of the current study were 1) to compare sample preparation workflows and quantitative real-time polymerase chain reaction assays (qPCR) as currently used in veterinary diagnostic laboratories with a study protocol utilizing commercially available reagents for individual Tritrichomonas foetus testing, 2) to assess the accuracy of pooling cultured smegma samples followed by extraction and qPCR testing as used in the study laboratory, and 3) to assess the specificity of the currently used primers and probes by sequencing all positive and presumptive positive samples identified in the study laboratory in an attempt to capture any nucleotide variability between T. foetus isolates and to rule out false-positive results possibly due to Simplicimonas moskowitzi. Eight hundred three cultured smegma samples were collected from different regions of the United States with the collaboration of 5 veterinary testing laboratories. The samples were processed individually by the respective laboratories, and then sent to the study laboratory and retested using the study protocol. Comparison testing showed an overall agreement of 95.89% between the veterinary testing laboratories and the study laboratory. One hundred seventy-six positive or presumptive positive samples plus 625 negative qPCR samples were combined and retested using a pooling protocol. Pools consisted of 1 positive sample and 4 negative samples (1/5). These pools were processed using the same study laboratory protocols, and 96% of the positive samples were detected in these pools. Nested PCR followed by sequencing confirmed 175 of the 178 samples classified as positive or presumptive positive in the study laboratory as containing T. foetus-specific DNA.
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Affiliation(s)
- Lee Effinger
- 1Ivan Leyva-Baca, Animal Health and Food Safety Group at Life Technologies, 2130 Woodward Street, Austin, TX 78744.
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Midlej V, Vilela R, Dias A, Benchimol M. Cytopathic effects of Tritrichomonas foetus on bovine oviduct cells. Vet Parasitol 2009; 165:216-30. [DOI: 10.1016/j.vetpar.2009.07.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2009] [Revised: 07/12/2009] [Accepted: 07/13/2009] [Indexed: 10/20/2022]
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Trichomonas adhere and phagocytose sperm cells: adhesion seems to be a prominent stage during interaction. Parasitol Res 2007; 102:597-604. [PMID: 18043945 DOI: 10.1007/s00436-007-0793-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2007] [Accepted: 10/30/2007] [Indexed: 10/22/2022]
Abstract
Tritrichomonas foetus and Trichomonas vaginalis are extracellular parasites of the urogenital tract of cattle and humans, respectively. They cause infertility and abortion, but there is no documented information on the susceptibility of bovine sperm cells to this cattle parasite. The aim of this present work was to study the effects provoked by T. foetus and T. vaginalis when in interaction with bovine and human sperm cells. The bovine and human spermatozoa were obtained from uninfected bulls and men, respectively, and were exposed to living trichomonads over different periods of time. Light microscopy, video microscopy, scanning, and transmission electron microscopy first revealed a tropism, then a close proximity followed by a tight adhesion between these two different cells. A decrease in the spermatozoa motility was observed as well intense semen agglutination. The adhesion between trichomonads to the sperm cell occurred either by the flagella or sperm head. Motile parasites were observed during the next 12 h, whereas sperm cells in contact with the parasites rapidly became immotile. The parasites were able to maintain the sperm cells attached to their cell surface, followed by phagocytosis. This process began with a tight membrane-membrane adhesion and the incorporation of the sperm cell within an intracellular vacuole. Afterwards, the sperm cell was gradually digested in lysosomes. Many trichomonads were injured and/or died on making contact with the spermatozoa possibly due to necrosis. Results from this study demonstrated that both T. foetus and T. vaginalis interact with sperm cells provoking damage and death of these reproductive cells. Differences in the behavior of both trichomonads were evident, showing that T. vaginalis was much more virulent than T. foetus. The possible role of trichomonads in reproductive failure is discussed.
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