関連する実験動画
Updated: Aug 15, 2026

03:59
Targeting Gray Rami Communicantes in Selective Chemical Lumbar Sympathectomy
Published on: January 10, 2019
まとめ
この研究は,7つの臨床的および遺伝的症候群を区別することによって,脊髄筋縮 (SMA) を明確にします. 発見は,SMA患者の予後と遺伝カウンセリングを助けます.
科学分野:
- 神経学 神経学とは
- 遺伝学 遺伝学とは
- 小児科は小児科です.
背景:
- 脊髄筋縮症 (SMA) は,臨床的に有意な異質性を示し,予後と遺伝カウンセリングを複雑にします.
- 以前の分類は,包括的な臨床的および遺伝的相関が欠けていました.
研究 の 目的:
- 脊髄筋縮 (SMA) の鼻学的な問題を,統合された臨床的および遺伝的分析を通じて解決する.
- SMA症候群の洗練された分類システムを確立する.
主な方法:
- 総合的な臨床的および遺伝的分析は,SMAの240のインデックス症例で行われました.
- データ収集には,発症年齢,筋肉の関与パターン,家族歴,遺伝的証拠が含まれていました.
主要な成果:
- 7つの異なるSMA症候群は,臨床的および遺伝的基準に基づいて定義されました.
- 13の異なる突然変異遺伝子が原因として特定されました.
- SMAタイプI (ヴェルディニグ・ホフマン病) と慢性小児性SMAは,全SMA症例の74%を占めています.
結論:
- 提案された分類は,発症時の年齢,筋肉の関与,家族歴,遺伝的発見を用いて,SMA症候群を区別する.
- この分類は,新たに発症したSMA症例の差異診断に役立ちます.
- 脊髄筋縮の改善された予後と遺伝カウンセリングのための枠組みを提供します.
関連する概念動画
Skeletal Muscle Anatomy
Skeletal muscle is the most abundant type of muscle in the body. Tendons are the connective tissue that attaches skeletal muscle to bones. Skeletal muscles pull on tendons, which in turn pull on bones to carry out voluntary movements.
Classification of Skeletal Muscle Fibers
Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Classification of Connective Tissues
The connective tissues have different properties and functions in the human body. They are broadly categorized into proper, supporting, or fluid connective tissues.
Connective Tissue Proper
Connective tissue proper is the most abundant class of connective tissues. As its name implies, it predominantly connects different tissues in the body. Depending on the cell types, ground substance, viscosity, and fiber types in the ECM, connective tissue proper is further categorized into loose and dense.
Connective Tissue Proper
Connective tissue proper is the most abundant class of connective tissues. As its name implies, it predominantly connects different tissues in the body. Depending on the cell types, ground substance, viscosity, and fiber types in the ECM, connective tissue proper is further categorized into loose and dense.
Classification of Skeletal Muscle Relaxants
Skeletal muscle relaxants are a group of drugs that can reduce muscle stiffness and induce temporary paralysis to relieve pain. These agents can act centrally to reduce muscle tone or spasms in painful conditions such as multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), or spinal injuries; they are called antispasmodics or spasmolytics.
Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...
Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...
Fascicle Arrangement in Skeletal Muscles
Fascicles are bundles of muscle fibers in a skeletal muscle. Muscle fascicle arrangement is directly associated with the power and range of motion of various muscles. The configuration of these fascicles can vary, leading to different functional outcomes.
The four primary types of muscle based on fascicle arrangement are:
The four primary types of muscle based on fascicle arrangement are:
Muscles of the Vertebral Column
The back muscles that lie deep into the thoracolumbar fascia are called intrinsic or true back muscles. These muscles are divided into four layers: superficial, intermediate, deep, and deepest layers.
Superficial Layer:
The superficial layer consists primarily of the splenius muscles, which include the splenius capitis and splenius cervicis. These muscles are mainly responsible for the head and cervical spine movements, including extension, rotation, and lateral bending. The splenius capitis...
Superficial Layer:
The superficial layer consists primarily of the splenius muscles, which include the splenius capitis and splenius cervicis. These muscles are mainly responsible for the head and cervical spine movements, including extension, rotation, and lateral bending. The splenius capitis...

