相关实验视频
Updated: Jan 31, 2026

08:38
Extraction and Analysis of Cortisol from Human and Monkey Hair
Published on: January 24, 2014
29.1K
慢性压力,并发症,睡眠和自闭症特征之间的关系,包括严重程度使用头发皮质醇度
Natali Yu Chan1, James Rufus John2, Nisha E Mathew1
1Laboratory of ImmunoPsychiatry, Neuroscience Research Australia, Randwick, NSW, Australia.
Psychoneuroendocrinology
|January 29, 2026
概括
头发皮质醇度 (HCC) 可能作为自闭症谱系障碍 (ASD) 的生物标志物. 较低的HCC与较高的自闭症特征和并发症有关,而较高的HCC与儿童的睡眠焦虑和智商相关.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 生物标志物研究 生物标志物研究
背景情况:
- 自闭症谱系障碍 (ASD) 的特点是显著的异质性.
- 行为评估本身可能无法捕捉出自闭症个体特征的全部范围.
- 头发皮质醇度 (HCC) 为了解自闭症的临床变异提供了一个潜在的生物标志物.
研究的目的:
- 为了研究头发皮质醇度 (HCC) 和儿童自闭症特征之间的关系.
- 探索HCC与自闭症中常见的并发症的关联,包括睡眠障碍.
- 为了比较自闭症儿童与非自闭症儿童的HCC水平.
主要方法:
- 来自澳大利亚自闭症生物库 (年龄在2-17岁的儿童) 的数据的横截面分析.
- 多变量线性回归模型被用于识别与正常化HCC的关联.
- 对社会人口统计学共变量进行控制的分析,包括智商 (IQ).
主要成果:
- 更严重的自闭症特征,社会影响问题,ADHD,内化和不适应行为与较低的正常化HCC有关.
- 更高的睡眠焦虑和智商与更高的HCC有关.
- 年龄较大和家庭收入较高与较低的HCC相关.
结论:
- 头发皮质醇度 (HCC) 显示出潜在的生物标志物,用于识别基于同时发生的疾病的自闭症个体子组.
- 需要进一步的研究来探索个人,家庭和环境因素对压力水平和HCC的影响.
- 研究结果表明,HCC可以帮助理解临床变异,并可能支持自闭症谱系障碍的诊断措施.
相关概念视频
Stress Concentrations
632
The concept of stress concentration is crucial for understanding how materials respond under bending stresses, particularly when there are irregularities or discontinuities in the material's geometry. Normally, stress in a symmetric member subjected to pure bending is assumed to be uniformly distributed across the entire cross-section. However, this assumption does not hold when there are variations in the cross-sectional geometry or the presence of notches and holes.
The stress...
The stress...
632
Stress Concentrations
696
Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
696
Stress Concentrations in Circular Shafts
567
Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
567
Stress: General Loading Conditions
569
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
569
Relationship Formation
46.2K
What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
46.2K
Hair Cells
44.9K
Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
44.9K

