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Related Concept Videos

Vitamins01:30

Vitamins

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 in our...
Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Role of Skin in Vitamin D Synthesis01:23

Role of Skin in Vitamin D Synthesis

The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because it can be synthesized in the skin through a series of chemical reactions triggered by exposure to ultraviolet B (UVB) radiation from sunlight.
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin D3(cholecalciferol).
Disorders of Erythrocytes01:27

Disorders of Erythrocytes

Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
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Related Experiment Videos

Vitamin E deficiency in developing countries.

Daphna K Dror1, Lindsay H Allen

  • 1U.S. Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, Davis, California 95616, USA. dkdror@ucdavis.edu

Food and Nutrition Bulletin
|December 15, 2011
PubMed
Summary
This summary is machine-generated.

Vitamin E deficiency is common in developing nations due to poor nutrition and infections like malaria and HIV. Public health efforts are needed to improve vitamin E status, especially in children and the elderly.

Related Experiment Videos

Area of Science:

  • Nutrition and Dietetics
  • Public Health
  • Biochemistry

Background:

  • Vitamin E is a potent antioxidant crucial for immune function, inflammation control, gene expression, and cognitive performance.
  • Populations in developing countries face increased risk of vitamin E deficiency due to poor nutritional status and co-infections like malaria and HIV.
  • Existing research indicates children and the elderly are more vulnerable, with men potentially at higher risk than women.

Purpose of the Study:

  • To review the physiological roles of vitamin E.
  • To identify populations at risk for vitamin E deficiency in developing countries.
  • To highlight the need for public health interventions to address vitamin E deficiency.

Main Methods:

  • Literature review of multiple studies on vitamin E status and deficiency.
  • Analysis of data trends regarding vulnerable age groups and gender differences.
  • Synthesis of findings to inform public health strategies.

Main Results:

  • Vitamin E deficiency is linked to poor nutrition and oxidative stressors like malaria and HIV in developing countries.
  • Children and the elderly are identified as more vulnerable populations.
  • Men may face a higher risk of vitamin E deficiency compared to women.

Conclusions:

  • Public health initiatives are essential to improve vitamin E status in high-risk populations, counteracting oxidative stress and enhancing immune and cognitive functions.
  • Further research is required to determine optimal intervention dosages and develop effective, culturally appropriate programs.