Related Experiment Video
Updated: Jan 22, 2026

06:47
Isolation of Mesenchymal Stem Cells from Human Alveolar Periosteum and Effects of Vitamin D on Osteogenic Activity of Periosteum-derived Cells
Published on: May 4, 2018
9.8K
Extra-Skeletal Effects of Vitamin D
Rose Marino1, Madhusmita Misra2
1Pediatric Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
Nutrients
|June 30, 2019
Summary
Vitamin D deficiency
Area of Science:
- Endocrinology and Immunology
Background:
- Vitamin D receptor (VDR) is expressed in various non-bone cells, including immune cells and organs like the brain, heart, and gut.
- Vitamin D deficiency is linked to numerous conditions, including diabetes, autoimmune disorders, and cancer.
Purpose of the Study:
- To review the extra-skeletal effects of vitamin D deficiency.
- To focus on evidence from randomized controlled trials and meta-analyses.
Main Methods:
- Review of existing literature, focusing on randomized controlled trials (RCTs) and meta-analyses.
- Examination of epidemiological and case-control studies suggesting links between vitamin D deficiency and various diseases.
Main Results:
- Epidemiological studies often suggest associations between vitamin D deficiency and diseases like type 1 and type 2 diabetes, immune disorders, and cancer.
- Interventional studies, however, have largely failed to establish a causal link for these conditions.
Conclusions:
- While observational studies suggest a link between vitamin D deficiency and extra-skeletal diseases, robust interventional evidence is often lacking.
- Further research is needed to clarify the causative role of vitamin D in non-skeletal health outcomes.
Related Concept Videos
Skeletal Muscle Relaxants: Adverse Effects
782
Skeletal muscle relaxants are widely used for muscle paralysis and relieving pain following any muscle injury or stiffness. However, depending on the drug type, they can have adverse effects that range from mild to severe. Usually, nondepolarizing neuromuscular blockers have minimal side effects. For example, drugs like d-tubocurarine, cisatracurium, and rocuronium cause hypotension, whereas drugs like baclofen, when stopped abruptly, can lead to the recurrence of spastic conditions.
Unlike...
Unlike...
782
Vitamins
2.3K
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...
2.3K
Classification of Skeletal Muscle Fibers
59.4K
Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
59.4K
Mineral, Vitamin and Water Absorption
1.5K
Electrolytes are essential minerals and ions primarily obtained from the diet and absorbed through the gastrointestinal tract. Most electrolytes are absorbed in the small intestine. While the absorption of iron and calcium primarily occurs in the duodenum, calcium is also absorbed in the jejunum and ileum. In these regions, passive diffusion contributes to its absorption alongside active transport mechanisms in the duodenum. These ions can exit the enterocytes through specialized active...
1.5K
Role of Skin in Vitamin D Synthesis
7.6K
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...
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...
7.6K
What is the Skeletal System?
57.0K
Overview
57.0K

