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PubMed1989

Detection and characterization of antigens from Taenia solium cysticercus in cerebrospinal fluid.

Dot-ELISA and standard-ELISA were used to detect T. solium cysticercus antigens in cerebrospinal fluid for the diagnosis of neurocysticercosis. The results indicate that both assays are sensitive, specific and economically adequate for the diagnosis of this disease. Using SDS-PAGE, electroblotting and dot-ELISA we have found that the antigen is a protein with a molecular weight of 66,000 daltons.

Adult↗
PubMed1989

Presentation of a membrane cysticercus antigen and its homology with excretory--secretory antigen.

A cysticercus antigen was purified from the membrane. It is a glycoprotein containing hexoses and sialic acids with a molecular weight of 70 Kd and isoelectric focussing point 4.8. In western blot studies, the purified antigen bound with antibodies present in cerebrospinal fluid of all neurocysticercosis patients tested. Amino acid composition of the antigen showed a high content of Glutamate, Leucine and Aspartate while Proline and Hydroxyproline were absent. When cysts recovered from pigs were cultured for eight days, the excretory-secretory antigen obtained bound strongly with the antibody raised against the purified antigen. This indicates the homology of the two antigens. The possibilities of using this antigen for vaccination are discussed.

Animals↗
PubMed1988

Epizootiology of Cysticercus bovis in Imo state, Nigeria.

The incidence of Taenia saginata cysticercosis in cattle slaughtered for meat in Imo State, Nigeria, is reported. Examination of organs of 2,456 cattle in 8 abattoirs in both rural and urban parts of the state reveals that 642 (26.14%) were infected with Cysticercus bovis. There was no significant difference in the prevalence of infection in cattle slaughtered for the urban and rural communities. An inverse relationship between the ages of the animal and prevalence of infection with C. bovis was also recorded (r = -0.8352, P less than 0.05). No significant difference in prevalence rates was recorded between the sexes. The public health implication of the findings is discussed.

Abattoirs↗
PubMed1985

[Changes in the ECG telemetry of lambs infected with Cysticercus ovis].

Six lambs were experimentally infected with Cysticercus ovis. Some changes were followed up in the ECG by means of the radiotelemetric method. The infection process led to the following more important changes, such as sinus tachicardia and arhythmia, auricular fibrilation, sinoauricular block, atrial dissociation, the incidence of a pathologic Q deflection; lowering of the R deflection amplitude, and inversion of the T wave. It was found that the changes referred to persist for a longer period (in the case of infarction), and could be made use of in dispensary studies.

Animals↗
PubMed1979

The ultrastructural localization of alkaline phosphatase activity in the tegument of the cysticercus of Hydatigera taeniaeformis.

Alkaline phosphatase activity of the cysticercus of Hydatigera taeniaeformis was studied by means of electron microscopy. Beta-glycerophosphate was used as the substrate. The reaction product was localized within the microtriches of the distal cytoplasm, and in the cytoplasm and processes of perinuclear cells. Activity was also demonstrated within circular and longitudinal muscle bundles and in calcareous corpuscles.

Alkaline Phosphatase↗
PubMed1979

Tissue reaction to Cysticercus bovis in the lung of artificially infected cattle.

The tissue reaction to Cysticercus bovis in the lung of cattle with an experimental infection was an inflammatory rim originating in the immediate vicinity of the cysts. The cysts recovered at days 83 and 102 p.i. contained living cysticerci. The rim was composed either of a layer of high histiocytes organized in palisades (at day 83 p.i.), or a lyer of flat histiocytes (at day 102 p.i.). The outer layer of the rim consisted of fibroblasts, reticular cells and a different number of eosinophil- and neutrophil luekocytes. On the periphery, the rim was formed by granulation tissue infiltrated with lymphoplasmocytes. At the border between the layers of the inflammatory rim there were conspicuous foci of a necrotic appearance typical of a tissue reaction to C. bovis.

Animals↗
PubMed1984

Changes in blood cellular components, serum proteins and serum enzyme activities in pigs naturally infected with Cysticercus tenuicollis.

A study was made of blood cellular components, serum proteins and serum enzymes in 48 pigs naturally infected with Cysticercus tenuicollis. Twenty-five healthy pigs were studied for comparison. Affected animals showed a reduction in total erythrocyte count, packed cell volume and haemoglobin content and an increase in mean corpuscular volume and total leucocyte count. Significantly higher activities of aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase and isocitric dehydrogenase serum enzymes were recorded in all affected pigs. Total protein, albumin and globulin values of affected pigs remained unchanged when compared with healthy controls.

Alanine Transaminase↗
PubMed1978

Tissue reaction of the liver of cattle to an artificial or natural infection with Cysticercus bovis.

An evaluation of the tissue reaction to Cysticercus bovis in the liver of calves with an artificial infection and that of oxen with a natural infection provided evidence for the fact that the liver of these animals responded to an infection with C. bovis with an extensive granulomatous reaction. A comparison of tissue reaction to cysticerci at an identical stage of development showed that the reaction of the liver parenchyma was much more intensive than that of the heart and the skeletal muscles. In the described cases, this intensive reaction caused the death of the cysticerci before the completion of their development. Evidence was obtained for the first time that also in the liver C. bovis was located in the lymphatic vessels.

Animals↗
PubMed1982

[Hematological and biochemical changes in lambs experimentally infested with Cysticercus ovis].

The effect was followed up of the experimental infection of Cysticercus ovis on some hematological and biochemical indices in lambs. The experiments were carried out with a total of 14 two-month-old lambs divided into 3 test groups of 4 animals each and a control group of 2 animals. The lambs of the first group were infected with 4000 Taenia ovis eggs, those of the second group--with 7000 T. ovis eggs, and those of the third group--with 30 000 eggs. Both the hematological and the biochemical investigations were carried out prior to the infection and on the 4th, 7th, 12th, 28h, 35th, and 60th day after that. It was found that the infection led to a considerable rise of the leukocyte count. The differential blood picture pointed to a rise of the eosinophil leukocytes and the lymphocytes, and a drop of the neutrophils. The changes observed in all three test groups were better expressed within the period from the 7th up to the 35th day after the infection.

Animals↗