نتایج جستجو برای: helicobacter pullorum
تعداد نتایج: 23575 فیلتر نتایج به سال:
Salmonella enterica serovar Pullorum causes persistent infections in laying hens. Splenic macrophages are the main site of persistence. At sexual maturity, numbers of bacteria increase and spread to the reproductive tract, which may result in vertical transmission to eggs or chicks. In this study we demonstrate that both male and female chickens may develop a carrier state following infection b...
The immune performance, SNPs and expression levels of candidate genes (IL1-β, Nramp1, TLR4, MyD88, NF-κB and NLRC5) were analyzed in carrier chickens of a Chinese indigenous breed infected with Salmonella enterica Serovar Pullorum at different persistence periods (12, 19 and 24 weeks of age). Carrier birds at 19 weeks of age presented significant difference in most immune parameters, as compare...
چکیده باکتریhelicobacter pylori دارای خانواده ای از پروتئین های غشاء خارجی شامل 32 عضو است. چسبیدن با واسطه برخی از این پروتئین های غشاء خارجی سبب القای تولید اینترلوکین-8 می گردند. یکی از این پروتئین های غشاء خارجی، 33 -35 کیلو دالتون بوده و توسط ژن پروتئین التهابی غشائ خارجیa (oipa) بیان میگردد، که نقش مهمی را در بیماری زایی helicobacter pylori ایفا می نماید. .هدف ما از این مطالعه جداسازی و...
Salmonella enterica subsp. enterica serovar Gallinarum biovar Pullorum (Salmonella Pullorum) is highly adapted to chickens causing an acute systemic disease that results in high mortality. Vaccination represents one approach for promoting animal health, food safety and reducing environmental persistence in Salmonella control. An important consideration is that Salmonella vaccination in poultry ...
Monocytes-macrophages play an indispensable role in the immune system. The current study investigated the effect of selection for monocytes-macrophages phagocytosis on disease resistance in generation 1 (G1) of dwarf chickens. Five hundred dwarf chickens of generation 0 (G0) were divided into high and low phagocytic index (PI) groups (HPIG and LPIG, respectively) based on their PI of monocytes-...
Based on bacterial genomic data, we developed a one-step multiplex PCR assay to identify Salmonella and simultaneously differentiate the two invasive avian-adapted S. enterica serovar Gallinarum biotypes Gallinarum and Pullorum, and the most frequent, specific, and asymptomatic colonizers of chickens, serovars Enteritidis, Heidelberg, and Kentucky.
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