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Gastritis-II: Pathophysiology01:17

Gastritis-II: Pathophysiology

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Gastritis is marked by disruption of the mucosal barrier that usually protects the stomach tissue from digestive juices and manifests in acute and chronic forms.
In acute gastritis, the gastric mucosa becomes swollen and red and undergoes superficial erosion. Superficial ulceration may lead to bleeding.
In chronic gastritis, persistent or repeated insults lead to chronic inflammatory changes and, eventually, thinning or atrophy of the gastric tissue.
Gastritis can stem from various causes, each...
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Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

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An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
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Autoimmune Disorders01:29

Autoimmune Disorders

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Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune...
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Antibody Actions01:26

Antibody Actions

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Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
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Antigen Processing Pathways01:31

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MHC molecules are key players in the immune response, enabling T cells to recognize and respond to specific antigens. They are present on the surface of all nucleated cells in the body and are instrumental in presenting antigens to T cells and activating them. T cells recognize the MHC-antigen complex and initiate an immune response. MHC class I and MHC class II are two main types of MHC molecules, each associated with a distinct antigen processing pathway.
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Antibody Transfection into Neurons as a Tool to Study Disease Pathogenesis
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致病性自身抗体在肌肉炎中的内部化.

Iago Pinal-Fernandez1,2, Sandra Muñoz-Braceras1, Maria Casal-Dominguez1,2

  • 1Muscle Disease Section, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA.

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概括

在肌肉炎中,自身抗体进入肌肉细胞,准它们的特定蛋白质,并破坏正常细胞功能,驱动疾病病理. 这项研究阐明了自身抗体在自身免疫性肌肉疾病中的作用.

关键词:
肌肉炎是一种肌肉炎.通过RNA测序进行RNA测序.这是自抗体的自抗体.皮肤质神经炎 (dermatomyositis) 是一种疾病.免疫介导的化性骨髓炎

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科学领域:

  • 免疫学 免疫学 免疫学
  • 自身免疫性疾病是一种自身免疫性疾病.
  • 肌肉生物学 肌肉生物学

背景情况:

  • 肌肉炎包括自身免疫性肌肉疾病,其中自身抗体向细胞内蛋白质,使其致病作用不清楚.
  • 了解自身抗体如何与细胞内标相互作用,对于阐明肌肉炎的发病因子至关重要.

结论:

  • 证明了自身抗体在肌肉炎中被内化到肌肉纤维中.
  • 确定这些内化自身抗体会破坏其自身抗原的生物功能.
  • 结论:自身抗体介导的自身抗原功能中断是肌炎病理生理学的关键机制.