与乳牛中甲状炎复合物的发展相关的分子机制
Leanna Sanchez1, Fernando Campos-Chillon1, Mehdi Sargolzaei2,3
1Department of Animal Science, California Polytechnic State University, 1 Grand Ave., San Luis Obispo, CA 93407, USA.
Genes
|April 27, 2024
概括
在ATP8A2,COX16,AMN,TRAF3,SIPA1L1,DEPDC5和RNF122基因中的遗传变异与牛中的甲状炎综合体 (MC) 有关. 这些基因影响子宫胆固醇代谢和自,影响对产后子宫疾病的易感性.
科学领域:
- 基因组学就是基因组学.
- 兽医医学 兽医医学 兽医医学
- 动物育种 动物育种
背景情况:
- 甲状炎综合体 (MC) 涵盖了牛的产后子宫疾病,通过增加治疗成本,减少牛奶产量和降低生育能力,导致严重的经济损失.
- 确定MC的遗传基础对于制定有针对性的育种战略以改善牛的生殖健康至关重要.
研究的目的:
- 确定特定的遗传变异,基因和基因组区域,与牛群中甲状炎复合体 (MC) 疾病的调制相关.
- 通过in-silico功能分析阐明MC发育中的生物机制和途径.
主要方法:
- 一项全基因组关联研究 (GWAS) 使用1967年牛基因型 (624,460个SNP) 和MC记录进行,并使用单位混合线性模型进行分析.
- 进行了in-silico功能分析,以调查与MC相关的候选基因的生物学作用和途径.
主要成果:
- 在MC和包括ATP8A2,COX16,AMN和TRAF3在内的染色体12,10和21上的基因之间发现了显著的关联 (p ≤ 0.0001).
- 这些基因参与调节子宫支流胆固醇代谢,可能影响病原体的毒性和宿主易感性.
- 此外,参与PI3k-Akt/自途径的SIPA1L1,DEPDC5和RNF122基因与MC显著相关,这表明它们在控制细菌入侵和生存方面的作用.
结论:
- 与胆固醇代谢和自相关的基因的遗传变异显著影响牛群对甲状腺炎综合体的易感性.
- 这些发现为基因组选择策略提供了基础,旨在增强对产后子宫疾病的抵抗力,并改善整体群体健康.
相关概念视频
01:23Role of Matrix Metalloproteases in Degradation of ECM
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult body.
A...
A...
01:23Local Anesthetics: Mechanism of Action
Local anesthetics (LAs) block sensory and motor impulses by inhibiting the sodium channels on the nerve cell membranes. This induces temporary loss of sensation, relieving pain in a specific body area.
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
01:23Inhibitors of Gram-positive Cell Wall Synthesis
Bacterial cell walls are typically rigid structures composed mainly of peptidoglycan, a mesh-like polymer that provides mechanical strength and maintains cell shape. The synthesis of peptidoglycan is a crucial process in bacterial growth and serves as a primary target for many antibiotics.Mechanism of Action of Beta-Lactam AntibioticsBeta-lactam antibiotics, such as penicillin, inhibit peptidoglycan synthesis in actively growing cells. These antibiotics share a characteristic four-membered...
01:15Antifungal Agents
Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...
01:25Clinical Significance of Antibiotic Resistance
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
01:26Bacterial Meningitis II: Pathophysiology
Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...