基礎科学と病態生理
Naemah Md Hamzah1,2, Siong Meng Lim1,2, Fei Tieng Lim1
1Faculty of Pharmacy, Universiti Teknologi MARA, Puncak Alam, Selangor, Malaysia.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
まとめ
6-OHDA誘発ドーパミン作動性ニューロン喪失後のゼブラフィッシュ脳の病変部位付近にグリア細胞が存在します。これらの細胞は、神経変性疾患の脳自己修復メカニズムの理解を深める、再生されたニューロンの移動をガイドする可能性があります。
科学分野:
- 神経科学;再生医療;ゼブラフィッシュモデル
背景:
- 神経変性疾患には、進行を止める治療法がなく、脳の自己修復を促進するような新しい治療戦略が必要とされています。;哺乳類モデルは、自己修復能力が低いことから、神経再生の研究には限界があります。;ヒトとの脳の相同性と自己再生能力を持つ成体ゼブラフィッシュは、神経再生研究の貴重なモデルです。
研究 の 目的:
- 新生ドーパミン作動性ニューロン(DpN)の移動を促進するグリア細胞の関与の可能性を調査すること。;成体ゼブラフィッシュにおける6-OHDA誘発病変後のグリア細胞の発現と局在を調べること。
主な方法:
- 全脳イメージングを用いて、病変後14日時点でのグリア細胞の発現(gfap、olig2、glula)を評価しました。;免疫組織化学(IHC)を最も有意に発現したマーカーに対して行い、病変後5日、7日、14日時点でのグリア細胞の存在と局在を分析しました。
主要な成果:
- 14日間の病変後、腹側間脳(vDn)および隣接する終脳において、gfap免疫陽性細胞の数が有意に増加しました。;免疫組織化学分析により、vDn病変部位に隣接する領域である視索前野(POA)にグリア細胞が存在することが確認されました。
結論:
- 成体ゼブラフィッシュにおいて、6-OHDA病変後14日時点で、POAおよびvDn病変部位付近にグリア細胞が存在することがわかりました。;これらの発見は、神経再生中の神経細胞移動をガイドする上でグリア細胞が潜在的な役割を果たしていることを示唆しています。;ドーパミン作動性ニューロン再生を促進する上でのグリア細胞の特定の役割を解明するためには、さらなる研究が必要です。
関連する概念動画
Infection
11.6K
When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
11.6K
Urinary Tract Infection II: Pathophysiology
521
The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
521
Cystic Fibrosis: Pathogenesis
674
Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
674
Pneumonia II: Pathophysiology
2.5K
The pathophysiology of pneumonia involves the following steps:
2.5K
Stages of Infection
64.7K
Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
64.7K
Defense Against Bacterial Pathogens
2.6K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
2.6K


