Calcium phosphate

Jump to: navigation, search

WikiDoc Resources for Calcium phosphate

Articles

Most recent articles on Calcium phosphate

Most cited articles on Calcium phosphate

Review articles on Calcium phosphate

Articles on Calcium phosphate in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Calcium phosphate

Images of Calcium phosphate

Photos of Calcium phosphate

Podcasts & MP3s on Calcium phosphate

Videos on Calcium phosphate

Evidence Based Medicine

Cochrane Collaboration on Calcium phosphate

Bandolier on Calcium phosphate

TRIP on Calcium phosphate

Clinical Trials

Ongoing Trials on Calcium phosphate at Clinical Trials.gov

Trial results on Calcium phosphate

Clinical Trials on Calcium phosphate at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Calcium phosphate

NICE Guidance on Calcium phosphate

NHS PRODIGY Guidance

FDA on Calcium phosphate

CDC on Calcium phosphate

Books

Books on Calcium phosphate

News

Calcium phosphate in the news

Be alerted to news on Calcium phosphate

News trends on Calcium phosphate

Commentary

Blogs on Calcium phosphate

Definitions

Definitions of Calcium phosphate

Patient Resources / Community

Patient resources on Calcium phosphate

Discussion groups on Calcium phosphate

Patient Handouts on Calcium phosphate

Directions to Hospitals Treating Calcium phosphate

Risk calculators and risk factors for Calcium phosphate

Healthcare Provider Resources

Symptoms of Calcium phosphate

Causes & Risk Factors for Calcium phosphate

Diagnostic studies for Calcium phosphate

Treatment of Calcium phosphate

Continuing Medical Education (CME)

CME Programs on Calcium phosphate

International

Calcium phosphate en Espanol

Calcium phosphate en Francais

Business

Calcium phosphate in the Marketplace

Patents on Calcium phosphate

Experimental / Informatics

List of terms related to Calcium phosphate

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Calcium phosphate is the name given to a family of minerals containing calcium ions (Ca2+) together with orthophosphates (PO43−), metaphosphates or pyrophosphates (P2O74−) and occasionally hydrogen or hydroxide ions Template:Citation needed.[1]

Calcium phosphate is the principal form of calcium found in bovine milk and blood. Seventy percent of bone consists of hydroxyapatite, a calcium phosphate mineral (known as bone mineral). Tooth enamel is composed of almost ninety percent hydroxyapatite.

Chemical properties

Unlike most other compounds, the solubility level of calcium phosphate becomes lower as temperature increases. Thus heating causes precipitation.

In milk it is found in higher concentrations than would be possible at the normal pH because it exists in a colloidal form in micelles bound to casein protein with magnesium, zinc and citrate - collectively referred to as colloidal calcium phosphate (CCP).[2]

It is used in the production of phosphoric acid and fertilizers, for example in the Odda process. Overuse of certain forms of calcium phosphate can lead to nutrient-containing surface runoff and subsequent adverse effects upon receiving waters such as algal blooms and eutrophication.

Calcium phosphate is used in baking as the acid in a leavening agent, with E number E341. It is also used in cheese products.

A supersaturated calcium phosphate solution such as Caphosol may be used in the prevention and treatment of oral mucositis caused by chemotherapy or radiotherapy.

Tricalcium phosphate is also used as a nutritional supplement[3] and occurs naturally in cow milk Template:Citation needed, although the most common and economical forms for calcium supplementation are calcium carbonate (which should be taken with food) and calcium citrate (which can be taken without food).[4] There have been limited studies on the use of Hydroxyapatite as a food supplement, as such, its usage is discouraged.[4]

It is used in a variety of dental products for remineralization and as a diluent in some medications where it will give the tablet a grey colour in the absence of additional colouring agents.[5]

Another practical application of the compound is its use in gene transfection of cells.[6] It is not too well understood, but the calcium phosphate precipitate and DNA form a complex that is thought to help the DNA enter the cell.

It is also being used in the development of contrast agents.[7]

Calcium phosphates

Compendial status

See also

References

  1. "What Is Calcium Phosphate?". 
  2. A. Y. Tamime, ed. (2006). Brined cheeses - The Society of Dairy Technology (SDT). Wiley-Blackwell. ISBN 978-1-4051-2460-7. 
  3. Bonjour JP, Carrie AL, Ferrari S, Clavien H, Slosman D, Theintz G, Rizzoli R (March 1997). "Calcium-enriched foods and bone mass growth in prepubertal girls: a randomized, double-blind, placebo-controlled trial". J. Clin. Invest. 99 (6): 1287–94. PMC 507944Freely accessible. PMID 9077538. doi:10.1172/JCI119287. 
  4. 4.0 4.1 Straub DA (June 2007). "Calcium supplementation in clinical practice: a review of forms, doses, and indications". Nutr Clin Pract. 22 (3): 286–96. PMID 17507729. doi:10.1177/0115426507022003286. 
  5. Weiner, Myra L.; Lois A. Kotkoskie (1999). Excipient Toxicity and Safety. p. 81. ISBN 978-0-8247-8210-8. 
  6. Kingston RE, Chen CA, Rose JK (August 2003). "Calcium phosphate transfection". Curr Protoc Mol Biol. Chapter 9: Unit 9.1. ISBN 0-471-14272-7. PMID 18265332. doi:10.1002/0471142727.mb0901s63. 
  7. Biomaterials. 2013 Sep;34(29):7143-57. doi: 10.1016/j.biomaterials.2013.05.077. Epub 2013 Jun 21. Multifunctional calcium phosphate nano-contrast agent for combined nuclear, magnetic and near-infrared in vivo imaging. Ashokan A, Gowd GS, Somasundaram VH, Bhupathi A, Peethambaran R, Unni AK, Palaniswamy S, Nair SV, Koyakutty M.
  8. British Pharmacopoeia Commission Secretariat (2009). "Index, BP 2009" (PDF). Retrieved 31 January 2010. 

Template:Calcium compoundsnl:Calciumfosfaat


Linked-in.jpg