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関連する概念動画

The Skin Microbiota01:27

The Skin Microbiota

98
The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
98
Defense Mechanism Against Infection01:26

Defense Mechanism Against Infection

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Natural flora, body system defenses, and inflammation are natural barriers of the body against infectious agents regardless of previous exposure. Normal floras of the human body refer to the microbial population that colonizes the skin and mucous membranes.
In addition, many body organ systems have unique defenses against infection. The skin is an intact, multilayered surface preventing invasion by microorganisms unless impaired. Mucous membranes lining the mouth, nose, and eyelids are barriers...
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The Oral Microbiota01:27

The Oral Microbiota

63
The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...
63
Introduction to the Human Microbiota01:22

Introduction to the Human Microbiota

128
Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity,...
128
Surface Membrane Barriers01:18

Surface Membrane Barriers

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The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
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Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

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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...
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関連する実験動画

Updated: Apr 20, 2026

Preparation of Single-cell Suspensions for Cytofluorimetric Analysis from Different Mouse Skin Regions
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皮膚の微生物群と免疫の間の対話

Yasmine Belkaid1, Julia A Segre2

  • 1Program in Barrier Immunity and Repair and Mucosal Immunology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, National Institute of Health (NIH), Bethesda, MD, USA. ybelkaid@niaid.nih.gov jsegre@nhgri.nih.gov.

Science (New York, N.Y.)
|November 22, 2014
PubMed
まとめ

人間の皮膚は,皮膚細胞,免疫細胞,微生物の複雑な相互作用を宿している. この相互作用によって,皮膚が維持されます.

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Infecting Mice with Malassezia spp. to Study the Fungus-Host Interaction
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関連する実験動画

Last Updated: Apr 20, 2026

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科学分野:

  • 皮膚科 皮膚科について
  • 免疫学 免疫学とは
  • 微生物学 微生物学とは

背景:

  • 皮膚は,病原菌に対する重要な物理的障壁として機能します.
  • また,多種多様な共生微生物のコミュニティにも住んでいます.
  • 皮膚のホメオスタシスの維持には,皮膚細胞,免疫細胞,微生物の間のダイナミックな相互作用が含まれます.

研究 の 目的:

  • 皮膚の微生物と免疫細胞の複雑な相互作用をレビューする.
  • これらの相互作用が皮膚の障壁の成熟をどのように調節するかを理解する.
  • 生理学的変化と環境的課題の下でこれらのプロセスを探求する.

主な方法:

  • これは,既存の研究を統合したレビュー記事です.
  • それは皮膚表面と関連する付属体に焦点を当てています.
  • このレビューは,宿主生理学と環境要因に関する発見を統合しています.

主要な成果:

  • 皮膚の障壁の整合性は,宿主-微生物-免疫細胞の交響によって動的に調節されます.
  • 共生微生物は,免疫系の発達と機能において重要な役割を果たします.
  • これらの相互作用は,怪我や感染などのストレス要因に反応するために不可欠です.

結論:

  • 皮膚の微生物群と免疫システムは,バリア機能を維持するために相互依存しています.
  • これらの相互作用を理解することは,皮膚の健康と病気に対処する鍵です.
  • 将来の研究は,これらの複雑な宿主-微生物-免疫ネットワークをさらに解明する必要があります.