量化母体抗体转移到胆乳和带血的量化发现狗的病毒特异性选择性
Serena S Teh1, Lotta H Truyen1,2, Sarah Woodyear1
1Baker Institute for Animal Health, Cornell University, Ithaca, NY, United States.
Frontiers in immunology
|January 30, 2026
概括
母亲抗体 (MatAbs) 对小狗的免疫力至关重要,但通过胎盘的转移是有限的. 大奶粉显著丰富病毒特异性抗体,使其对狗的新生儿保护至关重要.
科学领域:
- 兽医免疫学 兽医免疫学
- 新生儿健康 新生儿健康
- 狗的传染病 狗的传染病
背景情况:
- 新生儿感染导致小狗死亡率很高,免疫力依赖于母体抗体 (MatAbs).
- 有限的数据存在于影响MatAb传输大小和特异性的因素在狗.
- 了解MatAb转移对于改善新生儿生存率至关重要.
研究的目的:
- 量化母体抗体转移在狗通过不同的路径 (胎盘和胆乳).
- 确定影响母体抗体转移效率的因素.
- 探索在胆固醇生成过程中选择性丰富特定抗体.
主要方法:
- 分析了44只狗的匹配的母体血清,带血和胆乳样本.
- 总IgG和针对犬类帕维病毒 (CPV) 和犬类病毒 (CDV) 的特定抗体的量化.
- 评估母亲的因素 (年龄,品种,性别等等). 在抗体转移效率上.
主要成果:
- 胎盘间的MatAbs转移是有限的 (4.5%-6%的母体位数).
- 病毒特异性IgG在胆乳中高度丰富 (CPV为10.7倍,CDV为8.1倍).
- 母体血清抗体标位是转移效率的主要决定因素.
结论:
- 大奶粉在新生儿免疫力中起着至关重要的作用,这是由于对病毒特异性抗体的优先丰富.
- 孕产妇抗体转移效率受到抗体特异性和孕产妇血清标位的影响.
- 在繁殖之前确保足够的母体抗体标位对于小狗的健康至关重要.
相关概念视频
Dose-Response Relationship: Selectivity and Specificity
9.7K
Drugs exert their therapeutic effects by interacting with receptors, enzymes, or ion channels that are present throughout the human body. The strength and duration of the interaction between a drug and its target receptor are characterized by the selectivity and specificity of the drug. Selectivity refers to a drug's strong preference for its intended target over other targets. For instance, isoprenaline, a non-selective β-adrenergic agonist, interacts with both β1- and...
9.7K
Antibody Structure
65.5K
Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
65.5K
What are Viruses?
128.1K
Overview
128.1K
Quantifying Work
24.4K
As a system undergoes a change, its internal energy can change, and energy can be transferred from the system to the surroundings, or from the surroundings to the system.
24.4K
What is Natural Selection?
128.9K
Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.
128.9K
Types of Genetic Transfer Between Organisms
30.7K
Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
30.7K


