Wednesday, September 8, 2010

Vitamin D role in preventing aromatase inhibitor-induced arthralgia

Courtesy of

Vitamin D threshold to prevent aromatase inhibitor-induced arthralgia: a prospective cohort study

Breast Cancer Research and Treatment, 08/04/2010
Exclusive author commentary
Prieto–Alhambra D et al.

Aromatase inhibitor (AI)–associated arthralgia limits adherence to therapy in breast cancer...After supplementation (daily 800 IU and additional 16,000 IU every 2 weeks), 50% of them still failed to reach adequate concentrations at 3 months. In the whole cohort, there was an increase in joint pain and the increase was significantly attenuated in those that reached concentrations of 25(OH)D of > or =40 ng/ml, with a lower risk of incident arthralgia. A target concentration of 40 ng/ml 25OHD may prevent development of AI arthralgia but higher loading doses are required to attain this level in women with deficiency at baseline.

Daniel Prieto-Alhambra (08/05/2010) comments:
Adherence to aromatase inhibitor(AI) therapy is required to improve survival in women with early breast cancer who can be treated with these drugs. AI-induced arthralgia is highly associated with discontinuation. We have shown for the first time that Vitamin D repletion (with target concentrations > or 40ng/ml) might prevent development of joint pain associated with AI therapy, and thus, may improve adherence. A randomized clinical trial is required now to ensure causality."


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Pharmacy History

"The earliest known compilation of medicinal substances was ARIANA the Sushruta Samhita, an Indian Ayurvedic treatise attributed to Sushruta in the 6th century BC. However, the earliest text as preserved dates to the 3rd or 4th century AD.
Many Sumerian (late 6th millennium BC - early 2nd millennium BC) cuneiform clay tablets record prescriptions for medicine.[3]

Ancient Egyptian pharmacological knowledge was recorded in various papyri such as the Ebers Papyrus of 1550 BC, and the Edwin Smith Papyrus of the 16th century BC.

The earliest known Chinese manual on materia medica is the Shennong Bencao Jing (The Divine Farmer's Herb-Root Classic), dating back to the 1st century AD. It was compiled during the Han dynasty and was attributed to the mythical Shennong. Earlier literature included lists of prescriptions for specific ailments, exemplified by a manuscript "Recipes for 52 Ailments", found in the Mawangdui tomb, sealed in 168 BC. Further details on Chinese pharmacy can be found in the Pharmacy in China article."

From Wikipedia:

Journal of Palliative Medicine - Table of Contents

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