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Alterations in Muscle Tone lll01:11

Alterations in Muscle Tone lll

29
Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...
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Restless Leg Syndrome and Night Terrors01:27

Restless Leg Syndrome and Night Terrors

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Restless Leg Syndrome (RLS), also known as Willis-Ekbom disease, is a neurological disorder characterized by an uncontrollable urge to move the legs due to uncomfortable sensations. These sensations typically occur during periods of rest or inactivity, particularly when lying down or sitting, and can severely disrupt sleep.
The exact cause of RLS is not fully understood, but it is believed to involve dopamine, a neurotransmitter that helps regulate muscle movement. Imbalances in dopamine levels...
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Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

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Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
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In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
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Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
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Updated: May 4, 2026

An Electroporation Method to Transform Rickettsia spp. with a Fluorescent Protein-Expressing Shuttle Vector in Tick Cell Lines
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ラキテス症候群 (RACITES) とは

Charlotte Jane Elder1, Nicholas J Bishop1

  • 1University of Sheffield, Academic Unit of Child Health, Sheffield Children's Hospital, Western Bank, Sheffield, UK.

Lancet (London, England)
|January 14, 2014
PubMed
まとめ
この要約は機械生成です。

世界的な骨疾患である症は,主にビタミンDの不足によって引き起こされ,低リン酸レベルにつながります. 現在の乳幼児のビタミンDガイドラインは不明確であり,この状態を防ぐために改訂する必要があります.

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科学分野:

  • 小児科は小児科です.
  • 栄養科学とは,栄養科学である.
  • エンドクリノロジー エンドクリノロジー

背景:

  • 歴史的に"イングランド病"として知られている症は,依然として世界的な健康問題である.
  • 主な原因は,不十分なビタミンDであり,成長板と骨表面のリン酸欠乏につながります.
  • リン酸代謝に影響する遺伝性疾患は,ミネラルホメオスタシスの複雑さを強調しています.

研究 の 目的:

  • 乳児に対する現在のビタミンDサプリメントのガイドラインの矛盾と明確性の欠如に対処するために.
  • 広範囲に広がった病の発生率を効果的に撲滅するために,改訂された勧告の必要性を強調する.

主な方法:

  • ラキットの病因とビタミンDの代謝に関する既存の文献のレビュー.
  • 乳幼児の栄養とビタミンDサプリメントの現在のグローバルガイドラインの分析.
  • 骨のミネラライゼーションに対するリン酸利用量の影響の評価.

主要な成果:

  • ビタミンDの不十分な供給は,世界中でラキットの主要な原因です.
  • 乳児のビタミンDに関する既存のガイドラインは,断片的で矛盾しており,病気の根絶には不十分です.
  • リン酸代謝の理解は,ラキティスの病原性に対処するために不可欠です.

結論:

  • 乳児に対する現在のビタミンDの推奨は,大幅な明確化と改訂を必要としています.
  • ビタミンDの提供に統一され,証拠に基づいたアプローチが,ラキスを根絶するために必要である.
  • 骨の健康におけるリン酸塩の役割に関するさらなる研究が必要である.