Abstract：
:The efficacy of abamectin 1%, when injected subcutaneously in cattle at a dose of 200 micrograms/kg body weight, against the larval stages (grubs) of the fly Dermatobia hominis was evaluated in two trials in endemic areas of Brazil and Argentina. Eighteen Holstein x Brahman castrated males and 16 Brahman-cross with natural infestations were used. Larvae were counted by instar in situ on both sides of each animal before treatment, and were expressed, identified as to stage and classified as live or dead 10 days after treatment. Further larval counts were made periodically until day 79 to evaluate the degree of reinfestation and the stage of larval development. Reinfestation was first detected in the abamectin-treated cattle on day 44. Live larvae were found on 6-8 (Argentina) and on all (Brazil) controls at each post-treatment examination. The difference in numbers of live larvae between treatment groups was statistically significant (P < 0.05) at all post-treatment examinations. These data show that abamectin at a dose of 200 micrograms/kg body weight is highly effective in the treatment and control of established parasitic stages of D. hominis in cattle. No adverse reactions were observed in any of the treated animals.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Cruz JB,Benitez-Usher C,Cramer LG,Gross SJ,Kohn ABdoi
10.1007/BF00931889subject
Has Abstractpub_date
1993-01-01 00:00:00pages
183-5issue
3eissn
0932-0113issn
1432-1955journal_volume
79pub_type
临床试验,杂志文章,随机对照试验abstract：:An overall 44% transplacental transmission rate was observed in 221 rats fed cysts of 12 Toxoplasma strains at 15 days of pregnancy, with a range of 0-90% transmission. Considerable variability in the transmission rate was seen among different groups of rats that received similar Toxoplasma inocula; this is attributed...
journal_title：Parasitology research
pub_type： 杂志文章
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journal_title：Parasitology research
pub_type： 杂志文章,评审
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journal_title：Parasitology research
pub_type： 杂志文章
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journal_title：Parasitology research
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journal_title：Parasitology research
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journal_title：Parasitology research
pub_type： 杂志文章
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journal_title：Parasitology research
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journal_title：Parasitology research
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abstract：:In order to identify brain cell types that serve as host cells of Toxoplasma gondii encystation primary cultures from murine brain were infected and stained for neural and parasite stage-specific markers. In mixed culture inoculated with T. gondii tachyzoites, MAP2+ neurons, GFAP+ astrocytes, F4/80+ microglia, and O1+...
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pub_type： 杂志文章
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journal_title：Parasitology research
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