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Artykuły w czasopismach na temat „Teladorsagia circumcincta”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 24 lipca 2025

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1

Stear, Michael, David Piedrafita, Sarah Sloan, Dalal Alenizi, Callum Cairns, and Caitlin Jenvey. "Teladorsagia circumcincta." WikiJournal of Science 2, no. 1 (2019): 4. http://dx.doi.org/10.15347/wjs/2019.004.

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Usai, F., R. Rinnovati, V. Trocchi, and L. Stancampiano. "Lepus corsicanus gastro-intestinal helminths: first report." Helminthologia 49, no. 2 (2012): 71–77. http://dx.doi.org/10.2478/s11687-012-0015-0.

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AbstractItalian hare Lepus corsicanus De Winton, 1898, is a true species living in simpatry with Lepus europaeus in mainland Italy and with Oryctolagus cuniculus in Sicily, where L. europaeus is absent. Up to date, nobody has studied the helminths of this endemic Italian Mammal. Therefore, in order to describe Italian hare gastro-intestinal helminths, gastro-intestinal tract of 29 Italian hares, coming from mainland Italy (#14) and from Sicily (#15) were collected between 1997 and 2009. Twentyfive hares were positive for at least one parasite (86 %). Six parasite species were isolated, 2 cesto

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3

Morales, G., and J. Cabaret. "Determinacion de las relaciones polimorficas entre Teladorsagia circumcincta (Stadelmann, 1894) y Teladorsagia trifurcata (Ransom, 1907) en condiciones experimentales." Memórias do Instituto Oswaldo Cruz 80, no. 1 (1985): 85–90. http://dx.doi.org/10.1590/s0074-02761985000100013.

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En el presente estudio se demostró que Teladorsagia circumcincta (Stadelmann, 1894) y T. trifurcata (Ransom, 1907), nemátodes Trichostrongylidae de la sub-família Ostertagiinae, parasitan un espectro de hospedadores similares. La ausencia de barreras reproductivas entre T. trifurcata y T. circumcincta, así como la estabilización rápida de las proporciones de las dos entidades en el seno de la población, evidencia que T. trifurcata es un morfo de T. circumcincta.

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4

Kuchboev, A., O. Amirov, G. Soliyeva, et al. "Morphological and molecular identification three species Teladorsagia (Nematoda: Trichostrongylidae) in sheep, Uzbekistan." IOP Conference Series: Earth and Environmental Science 939, no. 1 (2021): 012078. http://dx.doi.org/10.1088/1755-1315/939/1/012078.

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Abstract Comparative studies of three species T. circumcincta, T. trifurcata and T. davtiani, which are preliminarily different morphs of the same species, have been carried out in this paper. Insignificant differences in morphological sizes and characters between males were identified and fragments of ITS-2 ribosomal DNA of three species of the genus Teladorsagia were investigated. There were no sequence differences between T. circumcincta and T. trifurcata. Minor differences were noted between T. circumcincta and T. davtiani species at the level of 0.8%. With complete similarity between T. c

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5

STEAR, M. J., P. D. ECKERSALL, P. A. GRAHAM, Q. A. McKELLAR, S. MITCHELL, and S. C. BISHOP. "Fructosamine concentration and resistance to natural, predominantly Teladorsagia circumcincta infection." Parasitology 123, no. 2 (2001): 211–18. http://dx.doi.org/10.1017/s0031182001008253.

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Fructosamine concentrations reflect protein status and because infection with Teladorsagia circumcincta can induce a relative protein deficiency, we examined the usefulness of fructosamine concentrations as markers of the intensity of infection in naturally infected lambs. Fructosamine concentration was a heritable trait and variation in fructosamine concerntrations was associated with differences in body weight, and a variety of parasitological variables; animals with increased fructosamine concentrations grew more quickly, had increased faecal egg counts in one of the three study years, had

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6

Craig, B. H., J. G. Pilkington, and J. M. Pemberton. "Sex ratio and morphological polymorphism in an isolated, endemic Teladorsagia circumcincta population." Journal of Helminthology 84, no. 2 (2009): 208–15. http://dx.doi.org/10.1017/s0022149x09990551.

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AbstractTeladorsagia circumcincta is a polygamous nematode that exhibits morphological polymorphism. Sex ratio is typically female biased and the male nematodes occur in association with the genetically similar, minor morphotypes Teladorsagia davtiani and Teladorsagia trifurcata. In experimental infections, sex ratio (proportion male) and the proportion of minor male morphs observed have been shown to be influenced by both host and nematode-related factors. As similar investigations from natural systems are rare, this study examined whether sex ratio and minor male morph frequency were associa

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7

STEAR, M. J., N. G. HENDERSON, A. KERR, et al. "Eosinophilia as a marker of resistance to Teladorsagia circumcincta in Scottish Blackface lambs." Parasitology 124, no. 5 (2002): 553–60. http://dx.doi.org/10.1017/s0031182002001580.

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Faecal egg counts and peripheral blood eosinophil counts were taken from Scottish Blackface lambs following natural, predominantly Teladorsagia circumcincta infection. Peripheral eosinophil concentrations were higher in animals with lower egg counts but only in lambs that were at least 3 months of age. The reduced egg counts were due to reduced fecundity of T. circumcincta; there was no association with the number of adult T. circumcincta. Associations with the number of parasites from other species of gastrointestinal nematodes appeared to be neutral or favourable. Estimated heritabilities fo

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8

Yashica, K. A., D. B. Bhinasara, V. Prasanth, et al. "Benzimidazole resistance in Teladorsagia circumcincta of goats." Journal of Veterinary Parasitology 35, no. 2 (2021): 81–88. http://dx.doi.org/10.5958/0974-0813.2021.00014.0.

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9

Hafidi, Nur Nasuha, Jaclyn Swan, Pierre Faou, et al. "Teladorsagia Circumcincta Galectin-Mucosal Interactome in Sheep." Veterinary Sciences 8, no. 10 (2021): 216. http://dx.doi.org/10.3390/vetsci8100216.

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Teladorsagia circumcincta is the most important gastrointestinal parasite in the livestock industry in temperate regions around the world, causing great economic losses. The infective third-stage larvae (L3) of Teladorsagia circumcincta secrete a large number of excretory-secretory (E/S) molecules, some of which are likely to play critical roles in modulating the host immune response. One of the most abundant E/S molecules is a protein termed Tci-gal-1, which has similarity to mammalian galectins. Galectins are a family of carbohydrate-binding molecules, with characteristic domain organisation

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10

Umair, Saleh, Charlotte L. G. Bouchet, Qing Deng, Nikola Palevich, and Heather V. Simpson. "Characterisation of a Teladorsagia circumcincta glutathione transferase." Molecular and Biochemical Parasitology 239 (September 2020): 111316. http://dx.doi.org/10.1016/j.molbiopara.2020.111316.

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11

Grillo, Victoria, Barbara H. Craig, Barbara Wimmer, and John Stuart Gilleard. "Microsatellite genotyping supports the hypothesis that Teladorsagia davtiani and Teladorsagia trifurcata are morphotypes of Teladorsagia circumcincta." Molecular and Biochemical Parasitology 159, no. 1 (2008): 59–63. http://dx.doi.org/10.1016/j.molbiopara.2008.01.001.

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12

Sloan, Sarah, Caitlin Jenvey, Callum Cairns, and Michael Stear. "Cathepsin F of Teladorsagia circumcincta is a recently evolved cysteine protease." Evolutionary Bioinformatics 16 (January 2020): 117693432096252. http://dx.doi.org/10.1177/1176934320962521.

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Parasitic cysteine proteases are involved in parasite stage transition, invasion of host tissues, nutrient uptake, and immune evasion. The cysteine protease cathepsin F is the most abundant protein produced by fourth-stage larvae (L4) of the nematode Teladorsagia circumcincta, while its transcript is only detectable in L4 and adults. T. circumcincta cathepsin F is a recently evolved cysteine protease that does not fall clearly into either of the cathepsin L or F subfamilies. This protein exhibits characteristics of both cathepsins F and L, and its phylogenetic relationship to its closest homol

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13

Umair, S., R. J. Bland, and H. V. Simpson. "Lysine catabolism in Haemonchus contortus and Teladorsagia circumcincta." Experimental Parasitology 131, no. 1 (2012): 101–6. http://dx.doi.org/10.1016/j.exppara.2012.03.014.

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14

Umair, S., C. Ria, J. S. Knight, R. J. Bland, and H. V. Simpson. "Sarcosine metabolism in Haemonchus contortus and Teladorsagia circumcincta." Experimental Parasitology 134, no. 1 (2013): 1–6. http://dx.doi.org/10.1016/j.exppara.2013.01.017.

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15

STRAIN, S. A. J., S. C. BISHOP, N. G. HENDERSON, et al. "The genetic control of IgA activity against Teladorsagia circumcincta and its association with parasite resistance in naturally infected sheep." Parasitology 124, no. 5 (2002): 545–52. http://dx.doi.org/10.1017/s0031182002001531.

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Previous studies in deliberately infected sheep have shown an association between IgA activity against 4th-stage larvae of Teladorsagia circumcincta and parasite growth, development and fecundity. The purpose of this research was to determine if these results could be confirmed in naturally infected sheep and to explore the hypothesis that plasma IgA activity could help to identify resistant lambs with shorter adult nematodes. Plasma IgA activity was skewed with most animals having relatively low levels of IgA activity. Plasma IgA activity was repeatable and highly heritable. Animals with incr

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16

Bye, Karstein. "Abomasal nematodes from three Norwegian wild reindeer populations." Canadian Journal of Zoology 65, no. 3 (1987): 677–80. http://dx.doi.org/10.1139/z87-105.

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Three separate populations of wild reindeer (Rangifer tarandus tarandus L.) in Norway were examined for the presence of abomasal nematodes. The following six species were recorded: Ostertagia grühneri, Skrjabinagia arctica, Trichostrongylus axei, Teladorsagia circumcincta, Teladorsagia davtiani, and Nematodirus tarandi. Ostertagia grühneri dominated both in prevalence and intensity of infection. Teladorsagia davtiani occurred in only one of the populations investigated, and N. tarandi was found in calves only. Reindeer and sheep grazed the same areas, but no evidence of transfer of parasites f

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17

Barrett, M., F. Jackson, and J. F. Huntley. "Pathogenicity and immunogenicity of different isolates of Teladorsagia circumcincta." Veterinary Parasitology 76, no. 1-2 (1998): 95–104. http://dx.doi.org/10.1016/s0304-4017(97)00221-5.

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18

Simpson, H. V., N. Muhamad, L. R. Walker, D. C. Simcock, S. Brown, and K. C. Pedley. "Nitrogen excretion by the sheep abomasal parasite Teladorsagia circumcincta." Experimental Parasitology 123, no. 1 (2009): 17–23. http://dx.doi.org/10.1016/j.exppara.2009.05.003.

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19

Walker, L. R., D. C. Simcock, K. C. Pedley, H. V. Simpson, and S. Brown. "The kinetics and regulation of phosphofructokinase from Teladorsagia circumcincta." Experimental Parasitology 130, no. 4 (2012): 348–53. http://dx.doi.org/10.1016/j.exppara.2012.02.011.

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20

Ellis, Samantha, Jacqueline B. Matthews, Darren J. Shaw, et al. "Ovine IgA-reactive proteins from Teladorsagia circumcincta infective larvae." International Journal for Parasitology 44, no. 10 (2014): 743–50. http://dx.doi.org/10.1016/j.ijpara.2014.05.007.

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21

Greenhalgh, Christopher J., Alex Loukas, and Susan E. Newton. "The organization of a galectin gene from Teladorsagia circumcincta." Molecular and Biochemical Parasitology 101, no. 1-2 (1999): 199–206. http://dx.doi.org/10.1016/s0166-6851(99)00075-4.

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22

CRAIG, B. H., L. J. TEMPEST, J. G. PILKINGTON, and J. M. PEMBERTON. "Metazoan-protozoan parasite co-infections and host body weight in St Kilda Soay sheep." Parasitology 135, no. 4 (2008): 433–41. http://dx.doi.org/10.1017/s0031182008004137.

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SUMMARYFor hundreds of years, the unmanaged Soay sheep population on St Kilda has survived despite enduring presumably deleterious co-infections of helminth, protozoan and arthropod parasites and intermittent periods of starvation. Important parasite taxa in young Soay sheep are strongyles (Trichostrongylus axei, Trichostrongylus vitrinus and Teladorsagia circumcincta), coccidia (11 Eimeria species) and keds (Melophagus ovinus) and in older animals, Teladorsagia circumcincta. In this research, associations between the intensity of different parasite taxa were investigated. Secondly, the intens

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23

Donaldson, J., M. F. J. van Houtert, and A. R. Sykes. "The effect of nutrition on the periparturient parasite status of mature ewes." Animal Science 67, no. 3 (1998): 523–33. http://dx.doi.org/10.1017/s1357729800032951.

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AbstractThe rôle of nutrition in the periparturient breakdown of resistance to gastrointestinal parasitism in mature ewes was investigated. Host resistance around this period, as measured by faecal egg concentration and worm burden, was sensitive to protein supply and to a lesser extent energy supply and body condition. Resistance was significantly less in ewes bearing and suckling twin lambs than those with singles. Differences in larval intakes spanning the range likely to be experienced in practice did not appear to be important. In dual infection with Teladorsagia circumcincta and Trichost

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24

Pimenov, I. A., and I. M. Odoevskaya. "Identifying the genotype of parasitic nematodes Teladorsagia circumcincta resistant to benzimidazole anthelmintics." Russian Journal of Parasitology 19, no. 2 (2025): 263–71. https://doi.org/10.31016/1998-8435-2025-19-2-263-271.

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The purpose of the research is to identify strains of parasitic nematodes Teladorsagia circumcincta resistant to benzimidazole anthelmintics using molecular genetic methods.Materials and methods. Animals: The Southern sheep aged 8 to 12 months. Parasitic nematodes of the family Trichostrongylidae were isolated from sheep abomasums. Male and female nematodes were preserved in separate labeled Eppendorf tubes at -20 оС. Molecular genetic testing. Native genomic DNA was isolated using a commercial kit DNA-Extran-2 (Synthol, Moscow) for DNA extraction from microgram quantities of tissues. Nested P

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25

Kuznetsov, Seryodkin, and Maksimova. "GASTROINTESTINAL NEMATODES OF DOMESTIC RUMINANTS IN PRIMORSKY KRAI." THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL, no. 21 (May 29, 2020): 169–72. http://dx.doi.org/10.31016/978-5-9902341-5-4.2020.21.169-172.

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The species composition of nematodes found during necropsies of cattle and small cattle in Primorsky Krai (Russian Far East) was determined. Mecistocirrus digitatus, Bunostomum phlebotomum, Cooperia punctata and Ostertgia ostertagi were found in cattle. Trichostrongylus colubriformis was registered in sheep and Teladorsagia circumcincta was found in goats. Small cattle had low rates of intensity and extensity of invasion, apparently, because of antiparasitic treatment performed by animal owners. The intensity of invasion in cattle reached 827 specimens. All nematode species found in this study

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26

Umair, Saleh, Charlotte Bouchet, Nikola Palevich, and Heather Simpson. "Teladorsagia circumcincta 1,6-Bisphosphate Aldolase: Molecular and Biochemical Characterisation, Structure Analysis and Recognition by Immune Hosts." Parasitologia 1, no. 1 (2021): 1–11. http://dx.doi.org/10.3390/parasitologia1010001.

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A 1095 bp full length cDNA encoding Teladorsagia circumcincta aldolase (TciALDO-1) was cloned and expressed in Escherichia coli. Recombinant TciALDO-1 was purified, and its kinetic properties determined. The predicted protein consisted of 365 amino acids, and was present as a single band of about 44 kDa on SDS-PAGE. Multiple alignments of the protein sequence of TciALDO-1 with homologues from other helminths showed the greatest similarity (93%) to the aldolases of Haemonchus contortus and Dictyocaulus viviparus, 82–86% similarity to the other nematode sequences, and 68–71% similarity to cestod

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Young, C. J., J. B. McKeand, and D. P. Knox. "Proteinases released in vitro by the parasitic stages of Teladorsagia circumcincta, an ovine abomasal nematode." Parasitology 110, no. 4 (1995): 465–71. http://dx.doi.org/10.1017/s0031182000064805.

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SUMMARYProteinases released during in vitro maintenance of third (L3) and fourth larval stage (L4) and adult Teladorsagia circumcincta (formerly Ostertagia circumcincta), an ovine abomasal nematode parasite, were characterized on the basis of pH optima, molecular size and specific proteinase inhibitor sensitivity. Enzyme activity was maximal at alkaline pH and stage-specific release was demonstrated. Proteinases released by the adult parasite degraded a variety of protein substrates including plasminogen, albumin and haemoglobin, in a pH-dependent manner. At alkaline pH fibrinogen degradation

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28

Elseadawy, Rana, Ibrahim Abbas, Moustafa Al-Araby, Michael B. Hildreth, and Salah Abu-Elwafa. "First Evidence of Teladorsagia circumcincta Infection in Sheep from Egypt." Journal of Parasitology 105, no. 4 (2019): 484. http://dx.doi.org/10.1645/18-202.

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MARTÍNEZ-VALLADARES, M., R. GODIO-FERNÁNDEZ, M. P. VARA-DEL RÍO, J. F. MARTÍN, and F. A. ROJO-VÁZQUEZ. "Expression of the recombinant protein disulphide isomerase of Teladorsagia circumcincta." Parasite Immunology 29, no. 1 (2007): 47–56. http://dx.doi.org/10.1111/j.1365-3024.2006.00922.x.

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Henderson, N. G., and M. J. Stear. "Eosinophil and IgA responses in sheep infected with Teladorsagia circumcincta." Veterinary Immunology and Immunopathology 112, no. 1-2 (2006): 62–66. http://dx.doi.org/10.1016/j.vetimm.2006.03.012.

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Umair, S., J. S. Knight, M. L. Patchett, R. J. Bland, and H. V. Simpson. "Molecular and biochemical characterisation of a Teladorsagia circumcincta glutamate dehydrogenase." Experimental Parasitology 129, no. 3 (2011): 240–46. http://dx.doi.org/10.1016/j.exppara.2011.08.007.

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Wilson, D., and N. Sargison. "Anthelmintic resistance in Teladorsagia circumcincta in sheep in the UK." Veterinary Record 161, no. 15 (2007): 535–36. http://dx.doi.org/10.1136/vr.161.15.535-a.

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Martínez-Valladares, M., M. R. Famularo, N. Fernández-Pato, C. Cordero-Pérez, L. Castañón-Ordóñez, and F. A. Rojo-Vázquez. "Characterization of a multidrug resistant Teladorsagia circumcincta isolate from Spain." Parasitology Research 110, no. 5 (2011): 2083–87. http://dx.doi.org/10.1007/s00436-011-2753-1.

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Bartley, D. J., L. Devin, M. Nath, and A. A. Morrison. "Selection and characterisation of monepantel resistance in Teladorsagia circumcincta isolates." International Journal for Parasitology: Drugs and Drug Resistance 5, no. 2 (2015): 69–76. http://dx.doi.org/10.1016/j.ijpddr.2015.05.001.

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PEMBERTON, ALAN D., JEREMY K. BROWN, NICKY M. CRAIG, et al. "Changes in protein expression in the sheep abomasum following trickle infection with Teladorsagia circumcincta." Parasitology 139, no. 3 (2011): 375–85. http://dx.doi.org/10.1017/s0031182011001983.

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SUMMARYContinual low-level exposure of sheep to the helminth Teladorsagia circumcincta elicits a temporary protective immunity, where factors in the immune abomasal mucosa prevent penetration of infective larvae, but which is essentially lost within 6 weeks of cessation of parasite challenge. Here, a proteomic approach was used to identify proteins that are differentially regulated in immune compared to naïve sheep, as potential key mediators of immunity. Six naïve sheep and 12 sheep trickle-infected with T. circumcincta were treated with anthelmintic, and the naïve (control) and 6 immune shee

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THEODORIDIS (Ι. ΘΕΟΔΩΡΙΔΗΣ), Y., C. HIMONAS (Χ. ΧΕΙΜΩΝΑΣ), and M. PAPAZAHARIADOU (Μ. ΠΑΠΑΖΑΧΑΡΙΑΔΟΥ). "Helminths parasites of digestive trackt of sheep and goats in Macedonian region." Journal of the Hellenic Veterinary Medical Society 51, no. 3 (2018): 195. http://dx.doi.org/10.12681/jhvms.15674.

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During two periods (December 1985-October 1986 and October 1990-April 1991), the digestive tracts of 102 sheep and 29 goats were examined, with the purpose to find out and identify the helminthes parasites of these animals. The 96,1% of sheep and 93,1% of goats were found to be infected with 26 and 20 different helminths, respectively. The nematodes which were found out of the different parts of the digestive tract of these animals were: Sheep: oesophagus: Gongylonema pulchrum, abomasum: Haemonchus contortus, Teladorsagia circumcincta, T. trifurcata, Trichostrongylus axei and Cooperia oncophor

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Stear, M. J., S. C. Bishop, N. G. Henderson, and I. Scott. "A key mechanism of pathogenesis in sheep infected with the nematode Teladorsagia circumcincta." Animal Health Research Reviews 4, no. 1 (2003): 45–52. http://dx.doi.org/10.1079/ahrr200351.

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AbstractInfection of sheep with the abomasal nematode Teladorsagia circumcincta can cause a relative protein deficiency and reduce growth rate in growing lambs. A key event appears to be the destruction of junctions between epithelial cells. If the infection is heavy or prolonged, this leads to increased mucus production, hyperplasia, decreased acid production, gastrinemia, inappetance and pepsinogenemia. The severity of the infection depends upon the extent of concurrent infection, the nutritional status of the host and genetically controlled variation in the ability to mount protective immun

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Froehlich, Kelly Ann, Robin McAnulty, and Andy Greer. "Loline Alkaloid Effects on Gastrointestinal Nematodes." Animals 12, no. 8 (2022): 996. http://dx.doi.org/10.3390/ani12080996.

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Loline, an alkaloid with several derivatives, has suggested antimicrobial and anthelmintic properties. Therefore, loline was investigated as a natural anthelmintic against Trichostrongylus colubriformis, Teladorsagia circumcincta, and Haemonchus contortus. Preliminary in vitro studies had reduced L3 T. circumcincta establishment but no effect on L3 T. colubriformis larvae migration or H. contortus establishment. While loline-treated lambs had lower establishment of L4 and adult T. circumcincta and L4 T. colubriformis, L4 and adult H. contortus appeared unaffected. Following preliminary study,

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Muhamad, Noorzaid, Lisa R. Walker, Kevin C. Pedley, David C. Simcock, and Simon Brown. "The initial kinetics of NH3/NH4+ efflux from L3 Teladorsagia circumcincta." Parasitology International 61, no. 3 (2012): 487–92. http://dx.doi.org/10.1016/j.parint.2012.04.003.

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Sutherland, I. A., A. E. Brown, D. M. Leathwick, and S. A. Bisset. "Resistance to prophylactic treatment with macrocyclic lactone anthelmintics in Teladorsagia circumcincta." Veterinary Parasitology 115, no. 4 (2003): 301–9. http://dx.doi.org/10.1016/s0304-4017(03)00186-9.

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