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{{Osteoporosis}}
{{Osteoporosis}}
{{CMG}}
{{CMG}}; {{AE}}{{EG}}
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'''Associate Editor(s)-In-Chief:''' {{CZ}}, [[User:Raviteja Reddy Guddeti|Raviteja Guddeti, M.B.B.S.]][mailto:rgudetti@perfuse.org]


==Overview==  
==Overview==  
Recent advances in the field of bone biology have led to a better understanding of bone cell functions and crosstalk between osteoblasts, osteoclasts, and osteocytes at the molecular level.  Research is under way to discover new therapies to reduce the fracture risk in the osteoporotic population.
Some future antiresorptive drugs that are not yet improved by [[FDA|US food and drug administration (FDA)]], include [[calcitriol]], [[genistein]], other [[bisphosphonates]] ([[etidronate]], [[pamidronate]], and [[tiludronate]]), [[PTH]] (1-84), [[sodium fluoride]], [[strontium ranelate]], and also [[tibolone]].


==Future or Investigational Therapies==
==Future or Investigational Therapies==
These include
===Non-FDA-approved drugs for osteoporosis===
* New bone [[anabolic]] substances such as [[antibodies]] directed against the endogenous inhibitors of bone formation sclerostin and dickkopf-1, PTH and PTHrp analogues, and possibly calcilytics
Nonapproved agents include:
* New inhibitors of bone resorption such as cathepsin K inhibitors which may suppress [[osteoclast]] function without impairing osteoclast viability and thus maintain bone formation by preserving the osteoclast-osteoblast crosstalk, and [[denosumab]]<ref name="pmid22776860">{{cite journal |author=McClung MR, Lewiecki EM, Geller ML, ''et al.'' |title=Effect of denosumab on bone mineral density and biochemical markers of bone turnover: 8-year results of a phase 2 clinical trial |journal=Osteoporos Int |volume= |issue= |pages= |year=2012 |month=July |pmid=22776860 |doi=10.1007/s00198-012-2052-4 |url=}}</ref>, an already widely available antibody against RANKL which inhibits osteoclast formation, function, and survival
*'''Calcitriol''': This synthetic [[vitamin D]] analogue, which promotes [[calcium]] absorption, has been approved by the [[FDA]] for managing [[hypocalcemia]] and metabolic [[bone]] [[disease]] in renal [[dialysis]] patients. It is also approved for use in [[hypoparathyroidism]], both surgical and [[idiopathic]], and [[pseudohypoparathyroidism]]. No reliable data demonstrate a reduction of risk for osteoporotic [[fracture]].
* Sequential therapies with two or more bone active substances aimed at optimizing the management of bone capital acquired during adolescence and maintained during adulthood in terms of both quantity and quality.<ref name="pmid22815185">{{cite journal |author=Lippuner K |title=The future of osteoporosis treatment - a research update |journal=Swiss Med Wkly |volume=142 |issue= |pages= |year=2012 |pmid=22815185 |doi=10.4414/smw.2012.13624 |url=}}</ref>
*'''Genistein''': An [[isoflavone]] [[phytoestrogen]] which is the main ingredient in the prescription “medical food” product Fosteum® and generally regarded as safe by the FDA. [[Genistein]] may benefit [[bone]] health in [[postmenopausal]] women but more data are needed to fully understand its effects on [[bone]] health and [[fracture]] risk.
 
*'''Other bisphosphonates (etidronate, pamidronate, tiludronate)''': These medications vary chemically from [[alendronate]], [[ibandronate]], [[risedronate]], and [[zoledronic acid]] but are in the same drug class. At this time, none is approved for prevention or treatment of [[osteoporosis]]. Most of these medications are currently approved for other conditions (e.g., [[Paget’s disease]], [[hypercalcemia]] of [[malignancy]], [[myositis ossificans]]).
*'''PTH (1-84)''': This [[medication]] is approved in some countries in Europe for treatment of [[osteoporosis]] in women. In one clinical study, [[PTH]] (1-84) effectively reduced the risk of [[vertebral fractures]] at a dose of 100 mcg/ day.
*'''Sodium fluoride''': Through a process that is still unclear, [[sodium fluoride]] stimulates the formation of new [[bone]]. The quality of [[bone mass]] thus developed is uncertain, and the evidence that [[fluoride]] reduces [[fracture]] risk is conflicting and controversial.
*'''Strontium ranelate''': This medication is approved for the treatment of [[osteoporosis]] in some countries in Europe. [[Strontium ranelate]] reduces the risk of both [[spine]] and nonvertebral [[fractures]], but the mechanism is unclear. Incorporation of [[strontium]] into the crystal structure replacing [[calcium]] may be part of its mechanism of effect. These effects have only been documented with the [[pharmaceutical]] grade agent produced by [[Servier Laboratories|Servier]]. This effect has not been studied in nutritional supplements containing [[strontium]] salts.
*'''Tibolone''': [[Tibolone]] is a tissue-specific, [[estrogen]]-like agent that may prevent [[bone loss]] and reduce [[menopausal]] symptoms. It is indicated in Europe for the treatment of [[vasomotor]] symptoms of [[menopause]] and for prevention of [[osteoporosis]], but it is not approved for use in the USA.<ref name="Cosmande Beur2014">{{cite journal|last1=Cosman|first1=F.|last2=de Beur|first2=S. J.|last3=LeBoff|first3=M. S.|last4=Lewiecki|first4=E. M.|last5=Tanner|first5=B.|last6=Randall|first6=S.|last7=Lindsay|first7=R.|title=Clinician’s Guide to Prevention and Treatment of Osteoporosis|journal=Osteoporosis International|volume=25|issue=10|year=2014|pages=2359–2381|issn=0937-941X|doi=10.1007/s00198-014-2794-2}}</ref>
==References==
==References==
{{Reflist|2}}
{{Reflist|2}}


 
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Latest revision as of 23:28, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Eiman Ghaffarpasand, M.D. [2]

Overview

Some future antiresorptive drugs that are not yet improved by US food and drug administration (FDA), include calcitriol, genistein, other bisphosphonates (etidronate, pamidronate, and tiludronate), PTH (1-84), sodium fluoride, strontium ranelate, and also tibolone.

Future or Investigational Therapies

Non-FDA-approved drugs for osteoporosis

Nonapproved agents include:

References

  1. Cosman, F.; de Beur, S. J.; LeBoff, M. S.; Lewiecki, E. M.; Tanner, B.; Randall, S.; Lindsay, R. (2014). "Clinician's Guide to Prevention and Treatment of Osteoporosis". Osteoporosis International. 25 (10): 2359–2381. doi:10.1007/s00198-014-2794-2. ISSN 0937-941X.