Calcification

Source: Wikipedia, the free encyclopedia.
Density-Dependent Colour Scanning Electron Micrograph SEM (DDC-SEM) of cardiovascular calcification, showing in orange calcium phosphate spherical particles (denser material) and, in green, the extracellular matrix (less dense material).[1]

Calcification is the accumulation of calcium salts in a body tissue. It normally occurs in the formation of bone, but calcium can be deposited abnormally in soft tissue,[1][2] causing it to harden. Calcifications may be classified on whether there is mineral balance or not, and the location of the calcification.[3] Calcification may also refer to the processes of normal mineral deposition in biological systems, such as the formation of stromatolites or mollusc shells (see Biomineralization).

Signs and symptoms

Calcification can manifest itself in many ways in the body depending on the location.

In the pulpal structure of a tooth, calcification often presents asymptomatically, and is diagnosed as an incidental finding during radiographic interpretation. Individual teeth with calcified pulp will typically respond negatively to vitality testing; teeth with calcified pulp often lack sensation of pain, pressure, and temperature.[citation needed]

Causes of soft tissue calcification

Calcification of soft tissue (arteries, cartilage,

heart valves,[1][2] etc.) can be caused by vitamin K2 deficiency or by poor calcium
absorption due to a high calcium/vitamin D ratio. This can occur with or without a mineral imbalance.

A common misconception is that calcification is caused by excess amount of calcium in diet. Dietary calcium intake is not associated with accumulation of calcium in soft tissue, and calcification occurs irrespective of the amount of calcium intake.[4]

Intake of excessive

vitamin D poisoning and excessive intake of calcium from the intestine which, when accompanied by a deficiency of vitamin K (perhaps induced by an anticoagulant), can result in calcification of arteries and other soft tissue.[5] Such metastatic soft tissue calcification is mainly in tissues containing "calcium catchers" such as elastic fibres or mucopolysaccharides. These tissues especially include the lungs (pumice lung) and the aorta.[6]


Mineral balance

Forms

Calcification can be pathological or a standard part of the aging process. Nearly all adults show calcification of the pineal gland.[7]

Location

Breast disease

In a number of

ductal carcinoma-in-situ to produce visible radio-opacities.[10]

Arteriosclerotic calcification

One of the principal causes of arterial stiffening with age is vascular calcification. Vascular calcification is the deposition of mineral in the form of calcium phosphate salts in the smooth muscle-rich medial layer of large arteries including the aorta. DNA damage, especially oxidative DNA damage, causes accelerated vascular calcification.[11] Vascular calcification could also be linked to the chronic leakage of blood lysates into the vessel wall since red blood cells have been shown to contain a high concentration of calcium.[12]

Diagnosis

In terms of diagnosis, in this case vascular calcification, an ultrasound and radiography of said area is sufficient.[13]

Treatment

Treatment of high calcium/vitamin D ratio may most easily be accomplished by intake of more vitamin D if vitamin K is normal.[citation needed] Intake of too much vitamin D would be evident by anorexia, loss of appetite, or soft tissue calcification.[citation needed]

See also

References

  1. ^
    PMID 23603848
    .
  2. ^ a b Miller, J. D. Cardiovascular calcification: Orbicular origins. Nature Materials 12, 476-478 (2013).
  3. ^ Calcification The American Heritage Science Dictionary. Retrieved 2013-03-23.
  4. ^ "Calcium beyond the bones". Harvard health Publishing. March 1, 2010.
  5. ^ Paul Price, et al., "Warfarin-Induced Artery Calcification Is Accelerated by Growth and Vitamin D", Arteriosclerosis, Thrombosis, and Vascular Biology, 2000, Vol. 20, pp. 317-327.
  6. ^ McGavin, Zachary. Pathologic basis of veterinary disease, fourth edition; Elsevier 2007.
  7. PMID 7063680. Archived from the original
    (PDF) on 2012-03-24. Retrieved 21 June 2012.
  8. ^ Muzio, Bruno Di. "Normal intracranial calcifications | Radiology Reference Article | Radiopaedia.org". Radiopaedia.
  9. ^ calcification in ovarian tumours
  10. ^ Robbins and Cotran (2009), Pathologic Basis of Disease, 8th edition, Elsevier.
  11. S2CID 218634735
    .
  12. .
  13. .