Hi Zark
New researches on Phosphocitrate (PC):
1.Phosphocitrate Is Potentially a Disease-Modifying Drug for Noncrystal-Associated Osteoarthritis
https://www.hindawi.com/journals/bmri/2013/326267/

Key sentences about AS:

“We found that PC inhibited the proliferation of OA fibroblast-like synoviocytes in the absence of calcium crystals. ”

“PC inhibited transforming growth factor-β1-induced proliferation of progressive ankylosis fibroblasts ”

2.A Novel Strategy for the Preparation of Naturally Occurring Phosphocitrate and Its Partially Esterified Derivatives
https://www.researchgate.net/publication...ied_Derivatives

Key sentences about AS:

"Furthermore, in vitro studies suggested that PC concentrations up to 1.5 mM (4.5 mg/mL) do not have any effect on normal cellular functions such as DNA and protein synthesis."