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相关概念视频

Vitamins01:30

Vitamins

565
Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced...
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Role of Vitamins in Maintaining Bone Health01:25

Role of Vitamins in Maintaining Bone Health

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The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
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Sensitivity, Specificity, and Predicted Value01:13

Sensitivity, Specificity, and Predicted Value

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In healthcare diagnostics, laboratory tests play a crucial role in identifying and diagnosing a wide range of medical conditions. However, interpreting test results is not always straightforward. An abnormal test result does not always confirm the presence of a disease, just as a normal result does not guarantee its absence. To assess the reliability of these diagnostic tools, healthcare practitioners rely on two key statistical indicators: sensitivity and specificity.
Sensitivity is the...
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Causality in Epidemiology01:21

Causality in Epidemiology

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Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
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Connective Tissue Cell Types01:22

Connective Tissue Cell Types

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Connective tissue develops from the mesoderm of a developing embryo and consists of cells, fibers, and ground substance: a gel-like material containing large complexes of carbohydrates and proteins. Connective tissue was first identified as a separate tissue family in the 18th century, and Johannes Peter Muller coined the term connective tissue.
Fat cells (adipocytes), smooth muscle cells (myoblasts), and bone cells (osteoblasts) are some connective tissue cell types. Some immune system cells...
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Criteria for Causality: Bradford Hill Criteria - II01:28

Criteria for Causality: Bradford Hill Criteria - II

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The Bradford Hill criteria serve as guidelines for establishing causative links in epidemiological research. Beyond Strength, Consistency, Specificity, and Temporality, key criteria also include Biological Gradient, Plausibility, Coherence, Experiment, and Analogy. These principles assist scientists in assessing the likelihood of causation in complex biological contexts. Below is a summary of these concepts:
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相关实验视频

Updated: Jun 7, 2025

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
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评估维生素D缺乏与BPPV的联系:相关性还是因果关系?

Sanjay Kumar1, Anghusman Dutta1, Kashiroygoud Biradar1

  • 1Department of ENT-HNS, Command Hospital Airforce, Bangalore, Karnataka India.

Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India
|November 19, 2024
PubMed
概括

维生素D缺乏与较高的良性发性位置 (BPPV) 发病率和严重程度有关. 补充剂可能会减少BPPV的发作和症状,这表明维生素D在前庭健康管理中起着关键作用.

关键词:
良性发性定位性头.代谢过程中的代谢.流行病学 流行病学静脉管疾病 静脉管疾病 静脉管疾病维生素D 维生素D是一种维生素.

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Whole Body Vibration Methods with Survivors of Polio
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科学领域:

  • 耳鼻喉科 耳鼻喉科 耳鼻喉科
  • 内分泌学 在内分泌学.
  • 营养科学 营养科学

背景情况:

  • 良性发性定位 (BPPV) 是一种普遍存在的前体障碍,导致头部运动带来的.
  • 新出现的证据表明,维生素D缺乏和BPPV之间存在相关性,这可能是由于维生素D在代谢中的作用对内耳功能至关重要.

研究的目的:

  • 研究维生素D水平与BPPV的发病率,严重程度和复发之间的关联.
  • 评估维生素D补充对BPPV结果的影响.

主要方法:

  • 一项长达一年的前性队列研究,涉及100名BPPV患者.
  • 测量维生素D水平 (缺乏<20 ng/mL,不足,足够).
  • 维生素D缺乏症患者每天补充2000 IU;随访评估了BPPV发病率,严重程度 (症状表) 和复发.

主要成果:

  • 维生素D缺乏与71%的BPPV发病率有关,而足够水平的20%.
  • 缺陷患者 (7.5) 的平均BPPV严重性得分明显高于足够患者 (3.5).
  • 在随访期间,维生素D补充与BPPV发病率和严重程度的降低相关.

结论:

  • 维生素D缺乏与BPPV发病率和严重程度增加之间存在显著联系.
  • 维生素D在维持前体健康方面起着至关重要的作用.
  • 维生素D补充剂可能是管理BPPV的一个有价值的组成部分,需要在受控试验中进一步调查.