Groups of seven cattle were infected with Theileria parva stabilate and treated with parvaquone (20 mg kg-1 bodyweight) zero, four, eight, 12, 14 or 16 days after infection. Very early treatments resulted in a rapid recovery or no detectable parasitosis and some cattle were subsequently susceptible to homologous challenge. Treatments applied before extensive lymphoid or other organ damage had developed were successful and some cattle treated in advanced disease also recovered. Clinical pathological indications of liver or kidney damage were recorded very late in the disease suggesting that prompt diagnosis and treatment are more important than supportive therapy for survival. Treatment on day 8 after infection allowed the appearance of macroschizonts and a transient pancytopenia but no other disease signs. This group was solidly immune to challenge and this timing and treatment could be recommended for use in an infection and treatment method of immunisation.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Proper nutrition is vital for maintaining good health for all people across their lifespan, especially children and mothers, who are especially vulnerable due to their specific nutrient needs. Despite the necessity of improved nutrition for these groups, some members do not fully meet their recommended daily micronutrient needs, a challenge exacerbated by different socioeconomic, cultural, and communal constraints resulting in malnutrition. Iron deficiency anaemia is a major concern among children and mothers, especially in pastoralist communities, due to poor nutrition and other related factors.
View Article and Find Full Text PDFThe entomopathogenic fungus isolate ICIPE 7 is being developed as an eco-friendly alternative to chemical acaricides in managing natural tick infestation on livestock. Its impact on tick infestation and tick-borne infections in cattle under natural conditions are yet unclear. We conducted a randomized controlled field trial to assess the safety and effects of Tickoff® (a formulation of isolate ICIPE 7) and the chemical acaricide Triatix® on tick infestation and incidence of and in extensively grazed zebu cattle in coastal Kenya.
View Article and Find Full Text PDFCRISPR-Cas-Based Pen-Side Diagnostic Tests for and .
Microorganisms
December 2024
Health Program, International Livestock Research Institute (ILRI), Nairobi P.O. Box 30709, Kenya.
and are tick-borne pathogens, posing significant threats to the health and productivity of cattle in tropical and subtropical regions worldwide. Currently, detection of and in infected animals relies primarily on microscopic examination of Giemsa-stained blood or organ smears, which has limited sensitivity. Molecular methods offer higher sensitivity but are costly and impractical in resource-limited settings.
View Article and Find Full Text PDFBiological control of ticks in domestic environments: Modeling the potential impact of entomopathogenic fungi on the transmission of East Coast fever in cattle.
Ticks Tick Borne Dis
December 2024
Quantitative Veterinary Epidemiology, Wageningen University & Research, Wageningen, the Netherlands.
Biological control of ticks using entomopathogenic fungi (EPF) is a highly desired alternative to chemical acaricides for the control of tick-borne pathogens. For Metarhizium anisopliae isolate ICIPE 7, one of these EPFs, efficacy against multiple tick species has been demonstrated in laboratory and field settings. However, we currently have little quantitative understanding of how EPFs can impact transmission.
View Article and Find Full Text PDFUpregulation of haematopoetic cell kinase (Hck) activity by a secreted parasite effector protein (Ta9) drives proliferation of Theileria annulata-transformed leukocytes.
Microb Pathog
February 2025
Freie Universität Berlin, Institute for Parasitology and Tropical Veterinary Medicine, Berlin, Germany; Freie Universität Berlin, Veterinary Centre for Resistance Research, Berlin, Germany. Electronic address:
Reversible transformation of bovine leukocytes by the intracellular parasites Theileria annulata and Theileria parva is central to pathogenesis of the diseases they cause, tropical theileriosis and East Coast Fever, respectively. Parasite-dependent constitutive activation of major host transcription factors such as AP-1 (Activating Protein 1) and NF-κB (Nuclear Factor-Kappa B) sustains the transformed state. Although parasite interaction with host cell signaling pathways upstream of AP-1 have been studied, the precise contribution of Theileria encoded factors capable of modulating AP-1 transcriptional activity, and other infection-altered signaling pathways is not fully understood.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!