脳のネットワーク. 相関遺伝子の発現は,脳ネットワークの同期活動をサポートします
Jonas Richiardi1, Andre Altmann2, Anna-Clare Milazzo3
1Functional Imaging in Neuropsychiatric Disorders Laboratory, Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA. Laboratory of Neurology and Imaging of Cognition, Department of Neuroscience, University of Geneva, Geneva, Switzerland. jonas.richiardi@unige.ch greicius@stanford.edu.
まとめ
研究者は,特にイオンチャネルのための遺伝子発現が,脳の機能的な接続性の基礎であることを発見しました. この発見は,分子メカニズムと,休息中の脳の領域のコミュニケーションを結びつけています.
科学分野:
- 神経科学は神経科学である.
- 遺伝学 遺伝学とは
- 分子生物学は分子生物学である.
背景:
- 休息中に脳の活動が各領域に同期し,機能的なネットワークを形成します.
- この機能的な接続性の分子基盤はよく理解されていません.
研究 の 目的:
- 機能的な脳の接続性をサポートする分子機構,特に遺伝子を特定する.
- 遺伝子発現と機能ネットワークの関連性を調査する.
主な方法:
- 死亡後の脳組織における相関遺伝子発現分析.
- 静止状態の機能性磁気共鳴画像 (rs-fMRI) で,機能的なネットワークを定義する.
- 人とマウスのモデルにおける遺伝子ポリモルフィズムと発現レベルの分析.
主要な成果:
- 機能的な脳ネットワークは,相関した遺伝子発現データを用いて複製することができます.
- イオンチャネルのために強化された136の遺伝子のセットが特定されました.
- これらの遺伝子のポリモルフィズムと発現レベルは,機能的および軸索の接続性と有意に相関しています.
結論:
- 特定の遺伝子,特にイオンチャネル遺伝子のオーケストラ化された活動は,静止状態の機能的接続性の基礎となっています.
- 分子メカニズムと大規模な脳ネットワークの組織を結びつける収束する証拠を提供します.
関連する概念動画
Neural Circuits
3.3K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
3.3K
Neuronal Communication
5.3K
Neurons, the fundamental units of the brain and nervous system, communicate through complex electrochemical signals that underpin all cognitive and bodily functions. This communication is primarily facilitated by a process involving the generation and propagation of an action potential along the axon of the neuron. When the internal electrical charge of a neuron surpasses a certain threshold, an action potential is triggered. This rapid change in voltage travels swiftly along the axon to the...
5.3K
Brain Imaging
968
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
968
Neurons as Communicators of the Brain
5.2K
Neurons, the fundamental units of the brain and nervous system, function as the primary transmitters of information throughout the body. Their ability to communicate through electrical and chemical signals is vital for every bodily function, from regulating the heartbeat to processing complex thoughts. Each neuron has three main components: the cell body (soma), dendrites, and an axon, each specialized to facilitate swift and efficient neural communication.
Cell Body
The cell body, also known...
Cell Body
The cell body, also known...
5.2K
Organization of the Brain
3.9K
The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
3.9K
Association Areas of the Cortex
10.7K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
10.7K


