Beitr�ge zu dem Problem der Wanderwege der Askaridenlarven (Ascaris Lumbricoides Linn� 1758 und Toxocara canis Werner 1782) im experimentellen und nat�rlichen Wirt

1964 ◽  
Vol 24 (2) ◽  
Author(s):  
DilipKumar Bhowmick
Keyword(s):  
Ascaris Lumbricoides ◽  
Toxocara Canis

scholarly journals Avaliação da contaminação experimental de areias de praias por enteroparasitas: pesquisa de ovos de Helmintos

1991 ◽  
Vol 7 (1) ◽  
pp. 90-99 ◽  
Author(s):  
Joaquim Pereira da Silva ◽  
Mauro Célio de A. Marzochi ◽  
Elisabeth Cardoso Leal dos Santos
Keyword(s):  
Ascaris Lumbricoides ◽  
Toxocara Canis ◽  
Trichuris Trichiura

Procurou-se avaliar métodos e soluções tradicionalmente utilizados na evidenciação de ovos de helmintos parásitos, de fezes ou do solo, em amostras de areia de praia experimentalmente contaminadas com ovos de Ascaris lumbricoides, Trichuris trichiura, Toxocara canis e Ancylostoma sp. Das soluções classicamente utilizadas, a de Dicromato de Sódio (d= 1,350) foi a que apresentou melhores resultados (índice de recuperação = 50%) para ovos de Ascaris, em 24 horas de observação. As duas soluções propostas: Carbonato de Sódio (d= 1,040) e Detergente aniônico sintético - Sulfonato de Sódio (d= 1,040), apresentaram índices de recuperação surpreendentes, superiores a 80% para os ovos de Ascaris, em 24 horas de observação. Conclui-se que o detergente de uso doméstico, pelo seu baixo custo e facilidade de aquisição, pode ser usado na avaliação de rotina da contaminação de areias de praias pelos ovos de enteroparasitos, importantes indicadores de contaminação fecal, necessários a um adequado monitoramento sanitário do meio.

scholarly journals An Investigation of the Allergens of Ascaris lumbricoides Using a Radioallergosorbent Test (Rast) and Sera of Naturally Infected Humans: Comparison With an Allergen for Mice Identified by a Passive Cutaneous Anaphylaxis Test

1978 ◽  
Vol 31 (5) ◽  
pp. 459 ◽  
Author(s):  
IJ O'Donnell ◽  
GF Mitchell
Keyword(s):  
Ascaris Lumbricoides ◽  
Body Fluid ◽  
Toxocara Canis ◽  
Passive Cutaneous Anaphylaxis ◽  
Molecular Weights ◽  
Protein Molecules ◽  
Isoelectric Points ◽  
Radioallergosorbent Test ◽  
Nasal Inhalation ◽  
Passive Cutaneous Anaphylaxis Test

The identification of those components of Ascaris lumbricoides (var. suum) body fluid (ABF) which are IgE-inducing antigens (allergens) was found to depend on the type of assay used. By use of the radioallergosorbent test and sera from humans naturally infected with A. lumbricoides, it was found that ABF contains a range of allergens with a variety of isoelectric points and molecular weights. Some cross-reactions were demonstrated between the allergens of A. lumbricoides and Toxocara canis. On the other hand, when a passive cutaneous anaphylaxis assay was used with sera from mice sensitized by nasal inhalation of ABF plus Bordetella pertussis vaccine, it was found that only one relatively pure fraction of ABF was involved. This consisted of some of the largest protein molecules in ABF: it had a molecular weight of approximately 360000 (subunits 140000 and 220000), an isoelectric region of 8�0-8�4, and was clearly very different from the allergens isolated from ABF by other workers.

Resistance of mice to Toxocara canis: effect of prechallenge infections and injections of worm extracts

1970 ◽  
Vol 48 (5) ◽  
pp. 1063-1066 ◽  
Author(s):  
N. N. Izzat ◽  
L. J. Olson
Keyword(s):  
Ascaris Lumbricoides ◽  
Worm Burden ◽  
Acquired Resistance ◽  
Paratenic Host ◽  
Toxocara Canis ◽  
Challenge Infection

Test mice have been infected one or more times and challenged with Toxocara canis larvae in an attempt to demonstrate acquired resistance to this nematode in a paratenic host. The worm burden of these mice at necropsy was not significantly less than that for controls.Mice given prechallenge injections of somatic fractions of T. canis eggs and adult worms, together with adjuvant, were found to harbor significantly fewer larvae after a challenge infection than did controls. The worm burden of mice similarly injected with fractions of adult Ascaris lumbricoides had worm burdens after challenge which were about equal to that of controls.

PERSISTENCE AND DISTRIBUTION OF TOXOCARA LARVAE IN THE TISSUES OF CHILDREN AND MICE

PEDIATRICS ◽  
1953 ◽  
Vol 12 (5) ◽  
pp. 491-497 ◽  
Author(s):  
MARGARET H. D. SMITH ◽  
PAUL C. BEAVER
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Ascaris Lumbricoides ◽  
Intestinal Parasites ◽  
Toxocara Canis ◽  
Neurologic Manifestations ◽  
The Central Nervous System ◽  
One Year ◽  
New Evidence ◽  
The Brain

Two young mentally defective children were infected with a small number of embryonated eggs of the dog ascarid, Toxocara canis. They remained asymptomatic clinically but developed eosinophilia which persisted for more than 13 months. Tissues from mice infected experimentally with the same dose of dog ascarid eggs were examined at intervals up to one year after infection. In the early stages of infection the larvae were found principally in the liver and lungs, but in the later stages they were most numerous in the brain. It seems not improbable that some of the neurologic manifestations associated with ascariasis may be due to actual presence of Toxocara larvae in the tissues of the central nervous system, rather than to toxic or allergic effects of Ascaris lumbricoides. This new evidence, added to previous observations on the effect of dog and cat ascarids in children, re-emphasizes the need for ridding household pets of their intestinal parasites at frequent intervals.

scholarly journals Joint manifestations in children infected with Ascaris lumbricoides and Toxocara canis – single centre experience

2016 ◽  
Vol 12 (2) ◽  
pp. 194-200
Author(s):  
Marta Janicka-Szczepaniak ◽  
◽  
Joanna Świdrowska ◽  
Elżbieta Smolewska ◽  
◽  
...  
Keyword(s):  
Ascaris Lumbricoides ◽  
Toxocara Canis ◽  
Single Centre ◽  
Single Centre Experience

scholarly journals Sanitary-parasitological condition of the environmental objects of the Astrakhan region

2021 ◽  
Vol 23 (1) ◽  
pp. 163-168
Author(s):  
Rudolf S. Arakelyuan ◽  
Khalil M. Galimzyanov ◽  
Anna E. Maslyaninova ◽  
Tatyuna M. Deeva
Keyword(s):  
Ascaris Lumbricoides ◽  
Strongyloides Stercoralis ◽  
Toxocara Canis ◽  
Personal Hygiene ◽  
Enterobius Vermicularis ◽  
Internal Organs ◽  
River Water Samples ◽  
Environmental Objects ◽  
Fish Samples ◽  
Presence Of People

The sanitary and parasitological state of environmental objects of the Astrakhan region is analyzed. It was found that out of 689 samples taken and studied from various environmental objects, 114 (16,5%) did not meet sanitary and parasitological standards. The share of soil samples taken was 554 (80,4%), of which 107 (19,3%) did not meet sanitary and parasitological standards. In 83 (15%) cases, living larvae of Strongyloides stercoralis were found, in 12 (2,1%) fertilized eggs of Ascaris lumbricoides, in 10 (1,8%) eggs of Toxocara canis, in 1 (0,2%) sample mixed invasions were noted: fertilized eggs of Ascara canis of 126 (18,3%) washes from hard surfaces, 4 (8,6%) were unsatisfactory (in 7,35% of cases, fertilized eggs of Ascaris lumbricoides were found and in 1,25% eggs of Enterobius vermicularis. Dead larvae of Anisakis simplex were found in 3 (0,4%) fish samples examined. All 6 (0,9%) river water samples complied with sanitary and parasitological standards. The presence of living strongilid larvae and toxocar eggs in the soil indicates its contamination with faeces of infected animals. The presence of people or about flooding or flooding of these objects sewer drains allows to assume existence of oosperms of ascarids in the soil about her pollution by excrements. The presence of eggs of ascarids and pinworms on various household surfaces indicates non-compliance with the rules of personal hygiene of persons infected with ascarids and/or pinworms who use these household appliances. The presence of aniacid larvae in the internal organs of fish is not a contraindication for its sale to the population.

scholarly journals Meningite eosinofílica e eosinofilia sanguínea de origem parasitária

1973 ◽  
Vol 31 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Ehrenfried O. Wittig ◽  
Izrail Cat ◽  
Leide P. Marinoni
Keyword(s):  
Ascaris Lumbricoides ◽  
Toxocara Canis ◽  
Biopsia Hepática ◽  
Biopsia Hepatica

É relatado o caso de um menino de 12 meses de idade que apresentava febre, rigidez de nuca e hepatoesplenomgalia e que, em dois exames sucessivos, apresentou eosinofilia sangüínea de 72% e 75% e liquórica de 75% e 78%, respectivamente. A biópsia hepática mostrou um granuloma eosinofílico. Embora a criança apresentasse grande infestação por Ascaris lumbricoides, os autores admitem que o quadro clínico apresentado possa ter sido determinado por larvas de Toxocara canis, apesar do parasita não ter sido encontrado.

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