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Infection01:20

Infection

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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...
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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.
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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...
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基礎科学と病態生理

Shilpa Kumari1,2, Rahul Renukadas Deshmukh3

  • 1Central University of Punjab, Bathinda, punjab, India.

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まとめ

セフトリアキソンとミノサイクリンの併用療法は、アルツハイマー病に対して有意な神経保護効果を示す

科学分野:

  • 神経科学
  • 薬理学
  • 生化学

背景:

  • アルツハイマー病（AD）は、認知機能および記憶力の低下を特徴とする進行性の神経変性疾患である。
  • ADの主な特徴には、βアミロイドプラークおよび過剰リン酸化タウタンパク質の神経原線維変化が含まれる。
  • 病原性メカニズムには、興奮毒性、酸化ストレス、神経伝達物質欠乏、神経炎症が含まれる。

研究 の 目的:

  • 散発性アルツハイマー病の実験モデルにおけるセフトリアキソンおよびミノサイクリンの神経保護の可能性を調査すること。
  • ストレプトゾシン誘発性神経変性に対するセフトリアキソンおよびミノサイクリンの併用療法の効果を評価すること。

主な方法:

  • 散発性アルツハイマー病の実験モデルを、脳室内ストレプトゾシン（ICV-STZ）投与によりラットに誘発した。
  • 空間および非空間記憶を、モリス水迷路（MWM）および物体認識テスト（ORT）を用いて評価した。
  • ラットには、セフトリアキソン（200 mg/kg）単独またはミノサイクリン（50 mg/kg）との併用で7日間、1日1回腹腔内投与した。

主要な成果:

  • ICV-STZ投与は、海馬および大脳皮質における認知障害、酸化ストレスマーカーの増加、および変性変化を誘発した。
  • セフトリアキソンとミノサイクリンの併用療法は、STZ誘発性の記憶低下および酸化ストレスを有意に軽減した。
キーワード:
神経保護セフトリアキソンミノサイクリンアルツハイマー病酸化ストレス

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  • この併用療法は、海馬および大脳皮質における神経細胞の喪失を効果的に予防した。

    • 結論:

    • セフトリアキソンおよびミノサイクリンは、認知および記憶障害を軽減する上で相乗的な神経保護効果を示す。
    • この併用療法は、アルツハイマー病の症状および進行の管理に有望である。