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相关概念视频

What is Monogastric Digestion?01:50

What is Monogastric Digestion?

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The human body contains a monogastric digestive system. In a monogastric digestive system, the stomach only contains one chamber in which it digests food. Several other animal species also have monogastric digestive systems, including pigs, horses, dogs, and birds. This chapter, however, focuses on the human digestive system.
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Anatomy of the Intestines01:23

Anatomy of the Intestines

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Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
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Physiology of Enteric Nervous System and Gut Health01:05

Physiology of Enteric Nervous System and Gut Health

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The gastrointestinal tract, responsible for the digestion and absorption of nutrients, is safeguarded by the intestinal barrier, which consists of secretory, physical, and immune components. At the forefront is the secretory barrier, composed of essential elements such as mucus, gut microbiota, and defense proteins. They collaborate to break down food particles, facilitate nutrient absorption, and maintain optimal gut health. These secretory components ensure the smooth functioning of the...
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Neural Regulation01:37

Neural Regulation

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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
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Irritable Bowel Syndrome I: Introduction01:17

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Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
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Bacterial Flora of the Large Intestine01:29

Bacterial Flora of the Large Intestine

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The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
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相关实验视频

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A Gut-on-a-Chip Model to Study the Gut Microbiome-Nervous System Axis
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通过微生物群多样性解读"肠-大脑轴".

Jinyuan Liu1, Ke Xu1, Tsungchin Wu2

  • 1Department of Biostatistics, Vanderbilt University, Nashville, Tennessee, USA.

General psychiatry
|November 3, 2023
PubMed
概括

这项研究引入了一种新的基于距离的框架,用于分析精神病学研究中的高维微生物组数据,改善对肠-大脑轴和心理健康的洞察力.

关键词:
心理健康 心理健康多变量分析多变量分析.回归分析是一种回归分析.统计,非参数的统计.

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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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科学领域:

  • 微生物组研究的研究.
  • 精神病学研究 精神病学研究
  • 高维数据分析的高维数据分析.

背景情况:

  • 高通量测序在精神病学研究中产生复杂的微生物组数据.
  • 传统的方法与高维度微生物组数据作斗争.
  • 了解肠-大脑轴对于心理健康至关重要.

研究的目的:

  • 提出一种基于距离的新型框架,用于分析精神病学研究中的高维微生物组数据.
  • 将重点从个人观察转移到主题之间的属性.
  • 为肠-大脑轴研究提供强大和可解释的解决方案.

主要方法:

  • 开发了一个基于距离的框架,用于高维微生物组数据.
  • 丰富的通用线性模型用于基于距离的变量的多变量回归.
  • 采用了强大的和计算上可行的半参数推理技术.

主要成果:

  • 拟议的框架在检测临床结果和微生物群多样性之间的信号方面提供了更好的灵敏度.
  • 新型估计器表现出稳健性和有利的非对称性质.
  • 这种方法有助于解读心理健康中的肠-大脑轴.

结论:

  • 基于距离的框架彻底改变了精神病学中高维微生物组数据的分析.
  • 这种方法为心理健康研究提供了敏感,强大和可解释的解决方案.
  • 它通过微生物群多样性分析增强了我们对肠-大脑轴的理解.