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関連する概念動画

Primary Active Transport01:47

Primary Active Transport

201.1K
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction...
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Primary Active Transport01:29

Primary Active Transport

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In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they would...
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Primary and Secondary Growth in Roots and Shoots03:02

Primary and Secondary Growth in Roots and Shoots

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Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
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Primary Production01:06

Primary Production

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The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
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Primary Distribution01:28

Primary Distribution

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Primary distribution systems deliver electrical power from substations to consumers through various voltage classes, with 15-kV class voltages being predominant among U.S. utilities. Older 2.5- and 5-kV classes are being replaced by 15-kV primaries, while higher 25- to 34.5-kV classes are used in high-density urban areas and rural regions with long feeders. Three-phase, four-wire multigrounded systems are widely employed for balanced power delivery, using the neutral wire as a grounding point.
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Nomenclature of Primary Amines01:17

Nomenclature of Primary Amines

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Primary, secondary, and tertiary amines are compounds consisting of one, two, and three alkyl groups connected to the amino group (–NH2), respectively. As depicted in Figure 1, the common name of the primary amines is obtained by adding the suffix -amine to the alkyl substituent attached to the amino group as the corresponding alkylamine.
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Using Primary Neurosphere Cultures to Study Primary Cilia
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主要な硬化性胆炎

Jessica K Dyson1, Ulrich Beuers2, David E J Jones1

  • 1Department of Hepatology, Newcastle upon Tyne Hospitals NHS Foundation Trust and Institute of Cellular Medicine, Newcastle University, Newcastle, UK.

Lancet (London, England)
|February 18, 2018
PubMed
まとめ
この要約は機械生成です。

主要性硬化性胆炎 (PSC) は,胆管線維症と機能障害を引き起こす希少な肝疾患である. 現在の治療法では生存効果が証明されていないため 新しい治療戦略の必要性を強調しています

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Simple Detection of Primary Cilia by Immunofluorescence
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科学分野:

  • ヘパトロジー
  • 胃腸内科
  • 免疫学

背景:

  • 主要性硬化性胆炎 (PSC) は,胆管線維症と硬化症によって特徴づけられる慢性的でまれな胆疾患である.
  • 肝臓機能障害やポータル高血圧などの 合併症に繋がります
  • エチオロジーは遺伝的,環境的,そしてますます認識されている腸内微生物の要因を含んでいます.

研究 の 目的:

  • 主要性硬化性胆炎に関する現在の理解を要約します.
  • 診断基準,関連する状態,管理上の課題を強調する.
  • 有効な治療法と 早期発見の必要性を強調するためです

主な方法:

  • 主要な硬化性胆炎に関する既存の文献のレビュー.
  • 肝臓の生化学と胆血管検査を含む診断マーカーの分析
  • 腸内微生物群を含む遺伝的および環境的要因の病原性役割の検討

主要な成果:

  • 診断の特徴はコレスタティック肝臓生化学と胆管の厳格な検査です.
  • 高い併発率 (約 70%) が炎症性腸疾患で存在し,監視が必要である.
  • 悪性腫瘍,特に胆管がんのリスクが高まるため,早期発見戦略の改善が必要である.

結論:

  • 主要な硬化性胆炎は診断上の課題と 重要な管理上の障害をもたらします
  • 移植後の再発は一般的です.
  • 病原性と標的治療に関するさらなる研究は 患者の治療結果を改善するために不可欠です