生物机械和组织学变量因位点而异,但在前肢的马匹数字样本中,性并非如此
J Damone1, L Bass1, B Gadomski2
1Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, 300 W Drake Rd, Fort Collins, CO 80526 USA.
Journal of equine veterinary science
|August 25, 2024
概括
这项研究发现,腿和非腿四肢之间的马类数字 (DC) 没有差异. 然而,在背部和手掌DC区域之间观察到不同的生物力学和组成特性.
科学领域:
- 兽医解剖学 兽医解剖学
- 马类生物力学 马类生物力学
- 历史学 历史学 历史学
背景情况:
- 马的数字 (DC) 对于承载重量至关重要,但其机械特性和组成仍然不太清楚.
- 开发有效的采样技术对于DC组织的详细分析至关重要.
研究的目的:
- 为马类数字 (DC) 分析开发可靠的采样技术.
- 为了比较脚和非脚的马前肢DC组织的生物力学和组织学特性.
- 调查DC内部的区域差异.
主要方法:
- 尸体后放射学指导采集的背部和手掌DC样本使用一个8毫米的活检穿孔.
- 进行了压缩测试,以确定直流样本的弹性模量.
- 组织学评估量化了原蛋白,脂肪,地面物质,弹性纤维和血管.
主要成果:
- 在腿前肢和非腿前肢之间,DC的组织学或生物力学特性没有发现显著差异.
- 与手掌直流相比,背面直流表现出明显更高的弹性模量和更高的地面物质百分比.
- 组织学分析证实了生物力学和组织学评估的样本完整性.
结论:
- 开发的采样技术适用于马类数字 (DC) 的生物机械和组织学分析.
- 弹性模量和基质的区域差异表明DC的背部和手掌方面具有不同的功能作用.
- 在这项研究中,似乎没有改变DC的内在生物力学或组织学特性.
相关概念视频
Dihybrid Crosses
Overview
Pedigree Analysis
Overview
Background and Environment Affect Phenotype
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
The Y Chromosome Determines Maleness
The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
The Ratio of X Chromosome to Autosomes
In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female Drosophila...
Genetic Variation
Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles, which...
Genes exist in different versions called alleles, which...


