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Role of Skin in Vitamin D Synthesis

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).

Role of Vitamins in Maintaining Bone Health

Role of Vitamins in Maintaining Bone Health

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...

Connective Tissue Cell Types

Connective Tissue Cell Types

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...

Vitamins

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...

Skeleton and Calcium Homeostasis

Skeleton and Calcium Homeostasis

Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.

Essential Minerals for Bone Health

Essential Minerals for Bone Health

The minerals contained in all of the food we consume are essential for our organ systems. However, certain essential minerals, such as calcium, phosphorus, magnesium, manganese, and fluoride, largely affect bone health.
Calcium and Phosphorus
Calcium is a critical component of bones, especially in the form of calcium phosphate and calcium carbonate. Since the body cannot make calcium, it must be obtained from the diet. However, calcium cannot be absorbed from the small intestine without...

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Vitamin D and the heart.

David G Gardner¹, Songcang Chen, Denis J Glenn

¹Diabetes Center, University of California at San Francisco, San Francisco, California; and.

American Journal of Physiology. Regulatory, Integrative and Comparative Physiology

|September 13, 2013

Summary

Vitamin D receptors (VDR) are crucial for cardiovascular health, potentially preventing conditions like high blood pressure and atherosclerosis. Further research may unlock vitamin D

Area of Science:

Cardiovascular Science
Endocrinology
Molecular Biology

Background:

Vitamin D receptors (VDR) are present in cardiovascular cells.
Liganded VDR may influence cardiac hypertrophy, fibrosis, blood pressure, and atherosclerosis.

Purpose of the Study:

To explore the role of VDR in cardiovascular health.
To evaluate the potential therapeutic use of vitamin D for cardiovascular disease.

Main Methods:

Review of experimental studies on VDR function in the cardiovascular system.
Analysis of observational human studies investigating vitamin D and cardiovascular outcomes.

Main Results:

Experimental data suggest VDR influences key cardiovascular processes.

Keywords:

heart vitamin D

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Human observational studies offer mixed but supportive evidence for VDR's role.

Vitamin D's potential in cardiovascular disease prevention and treatment is suggested.

Conclusions:

VDR plays a significant role in cardiovascular system regulation.
Vitamin D and its analogs show promise as therapeutic agents for cardiovascular diseases.