Pulmonary fibrosis is a chronic condition characterized by progressive scarring of lung parenchyma. The aim of this study was to examine the effects of an ultramicronized preparation of palmitoylethanolamide (PEA-um®), an endogenous fatty acid amide, in mice subjected to idiopathic pulmonary fibrosis. Idiopathic pulmonary fibrosis was induced in male mice by a single intratracheal administration of saline with bleomycin sulphate (1mg/kg body weight) in a volume of 100μL. PEA-um® was injected intraperitoneally at 1, 3 or 10mg/kg 1h after bleomycin instillation and daily thereafter. Animals were sacrificed after 7 and 21days by pentobarbitone overdose. One cohort of mice was sacrificed after seven days of bleomycin administration, followed by bronchoalveloar lavage and determination of myeloperoxidase activity, lung edema and histopathology features. In the 21-day cohort, mortality was assessed daily, and surviving mice were sacrificed followed by the above analyses together with immunohistochemical localization of CD8, tumor necrosis factor-α, CD4, interleukin-1β, transforming growth factor-β, inducible nitric oxide synthase and basic fibroblast growth factor. Compared to bleomycin-treated mice, animals that received also PEA-um® (3 or 10mg/kg) had significantly decreased weight loss, mortality, inflammation, lung damage at the histological level, and lung fibrosis at 7 and 21days. PEA-um® (1mg/kg) did not significantly inhibit the inflammation response and lung fibrosis. This study demonstrates that PEA-um® (3 and 10mg/kg) reduces the extent of lung inflammation in a mouse model of idiopathic pulmonary fibrosis.

Italian and Dutch PEA

Palmitoylethanolamide is especially in Italy and the USA at the moment hot for the treatment of glaucoma. We prefer treatment either with the Italian PEA tablets, based on PEA-um or PEA-m, or by administrating the Dutch PEA capsules containing PEA-opt. Dutch capsules do not contain any chemical excipients and are 100% pure in vegetarian capsules.

Only for these the Dutch and the Italian formulations long term safety and efficacy data gathered under the supervision of MDs are available. And only for these formulations (PEA-um, PEA-m and PEA-opt) there are currently data available proving that after intake PEA levels in the body significantly rise. Such data do not exist for me-too PEA formulations.


Reference

Ultramicronized palmitoylethanolamide (PEA-um) in the treatment of idiopathic pulmonary fibrosis.
Di Paola R, Impellizzeri D, Fusco R, Cordaro M, Siracusa R, Crupi R, Esposito E, Cuzzocrea S.
Pharmacol Res. 2016 Jul 8;111:405-412. doi: 10.1016/j.phrs.2016.07.010. [Epub ahead of print]