Bovine fasciolosis in Tabasco, Mexico

Rangel-Ruiz, Luis José; Marquez-Izquierdo, R; Bravo-Nogueira, G

doi:10.1016/s0304-4017(98)00152-6

Cited by 21 publications

(11 citation statements)

References 9 publications

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“…This could explain the high parasite frequencies from October, the beginning of the wet season when moisture is available for larval survival and movement. Rangel-Ruiz et al (1999) reported two infection periods for trematodes, one in the dry season and the other in the rainy season. However, they argued that the one that occurs during the dry season is more important than the wet season.…”

Section: Findings Of Faecal Egg Counts Have Indicated That Gastrointementioning

confidence: 97%

Monthly changes in body condition scores and internal parasite prevalence in Nguni, Bonsmara and Angus steers raised on sweetveld

Ndlovu

Chimonyo

Muchenje

2009

Trop Anim Health Prod

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The objective of the study was to determine monthly changes in body condition scores, body weights and on the prevalence of internal parasites in Nguni, Bonsmara and Angus steers raised on sweetveld. Body condition scores (BCS), body weights (BW), packed cell volume (PCV) and monthly faecal egg counts (FEC) were determined in 25 Nguni, 15 Bonsmara and 15 Angus steers. Nguni and Bonsmara steers maintained their body condition throughout the study, while the Angus lost condition. The Nguni had the highest PCV levels. The PCV levels tended to decline during the rainy season for all the breeds. The FEC were generally low. Fasciola spp. and strongyle eggs were found in 16.3 and 54.6% of the collected faecal samples, respectively. Of the three breeds, Nguni steers had the lowest parasite infestation levels, with the Bonsmara being more susceptible than the other two breeds. Generally, the egg counts observed throughout the study were low.

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Section: Findings Of Faecal Egg Counts Have Indicated That Gastrointementioning

confidence: 97%

Monthly changes in body condition scores and internal parasite prevalence in Nguni, Bonsmara and Angus steers raised on sweetveld

Ndlovu

Chimonyo

Muchenje

2009

Trop Anim Health Prod

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“…Another study done by Valero et al (2001) in the northern Bolivian Altiplano, revealed that the definitive host species clearly influences the size of F. hepatica adults and eggs, these influences do not persist in a rodent definitive host model. The abundance (= worm burden) is 25.75 fluke per liver which is collected from three sites in Mexico (Rangel-Ruiz et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Phenotypic description and prevalence of Fasciola species in Qena Governorate, Egypt with special reference to a new strain of Fasciola hepatica

Hussein

Khalifa

2010

Journal of King Saud University - Science

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“…Worldwide, Fasciola hepatica, a liver fluke, is a causative agent of fascioliasis in mammals (11,34,49), including humans (2,15,38). Following ingestion of metacercaria by the hosts, the juvenile worms burrow through the host gut walls and migrate to the liver, where they cause extensive damage before moving into the bile ducts.…”

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confidence: 99%

Molecular Cloning and Expression of Cu/Zn-Containing Superoxide Dismutase from Fasciola hepatica

Kim

Jung

et al. 2000

Infect Immun

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The cytosolic superoxide dismutase (SOD) of Fasciola hepatica, a causative agent of fascioliasis, was purified and characterized. The enzyme consists of two identical subunits, each with an apparent molecular mass of 17.5 kDa. An analysis of the enzyme's primary structure and inhibition studies revealed that the enzyme is a copper/zinc-containing SOD (Cu/Zn-SOD). The enzyme activity was relatively stable in a broad pH range, from pH 7.0 to 10.0, and the enzyme showed maximum activity at pH 7.5. This enzyme also displayed strong antigenicity against sera of bovine and human subjects with fascioliasis. The SOD gene fragment was amplified by PCR with degenerate oligonucleotide primers derived from amino acid sequences conserved in the Cu/ZnSODs of other organisms. An F. hepatica cDNA library was screened with the SOD gene fragment as a probe. As a result, a complete gene encoding the Cu/Zn-SOD was identified, and its nucleotide sequence was determined. The gene had an open reading frame of 438 bp and 146 deduced amino acids. Comparison of the deduced amino acid sequence of the enzyme with previously reported Cu/Zn-SOD amino acid sequences revealed considerably high homologies. The coding region of the F. hepatica Cu/Zn-SOD was cloned and expressed in Escherichia coli. Staining of native polyacrylamide gel for SOD activity of the expressed protein revealed SOD activity that was inactivated by potassium cyanide and hydrogen peroxide but not by sodium azide. This means that the presence of the recombinant fusion protein is indicative of Cu/Zn-SOD. The expressed protein also reacted with sera of bovine and human subjects with fascioliasis, but it did not react with sera of uninfected bovine and human subjects.

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Bovine fasciolosis in Tabasco, Mexico

Cited by 21 publications

References 9 publications

Monthly changes in body condition scores and internal parasite prevalence in Nguni, Bonsmara and Angus steers raised on sweetveld

Monthly changes in body condition scores and internal parasite prevalence in Nguni, Bonsmara and Angus steers raised on sweetveld

Phenotypic description and prevalence of Fasciola species in Qena Governorate, Egypt with special reference to a new strain of Fasciola hepatica

Molecular Cloning and Expression of Cu/Zn-Containing Superoxide Dismutase from Fasciola hepatica

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