A study to enhance the oral bioavailability of s-adenosyl-L-methionine (SAMe): SLN and SLN nanocomposite particles

Amasya G., Ergin A. D., Cakirci O. E., Özçelikay A. T., Sezgin Bayındır Z., Yüksel N.

CHEMISTRY AND PHYSICS OF LIPIDS, cilt.237, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 237
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.chemphyslip.2021.105086
  • Dergi Adı: CHEMISTRY AND PHYSICS OF LIPIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Chimica, EMBASE, INSPEC, MEDLINE, Veterinary Science Database
  • Anahtar Kelimeler: S-adenosyl-L-methionine, Major depression, Solid lipid nanoparticles, Nanocomposite particles, Oral bioavailability, SOLID-LIPID NANOPARTICLES, CONTROLLED DRUG-DELIVERY, ADENOSYLMETHIONINE, FORMULATION, RELEASE, OPTIMIZATION, AUGMENTATION, PERMEABILITY, SOLUBILITY, DEPRESSION
  • Ankara Üniversitesi Adresli: Evet

Özet

The endogenous molecule, S-adenosyl-L-methionine (SAMe) is a key factor due to its role in the methylation cycle and modulation of monoaminergic neurotransmission. Since many mental disorders have linked to the monoaminergic system, the level of SAMe in blood and cerebrospinal fluid is important in the treatment of major depression. In this study, solid lipid nanoparticles (SLN) were prepared in order to increase the limited oral bioavailability of SAMe, and SLN based nanocomposite particles (SAMe-SLN-NC) were further developed using an enteric polymer for passive targeting of intestinal lymphatic system. In this manner, it was also aimed to protect SAMe loaded SLN from harsh gastric environment as well as hepatic first-pass metabolism. Dynamic light scattering (DLS) analysis of SLN was performed, drug content was measured, SAMe release patterns were examined and the permeation ability of SAMe was investigated by the Parallel Artificial Membrane Permeability Assay (PAMPA) to characterize SAMe loaded SLN formulation. According to the PAMPA results, SAMe-SLN with the average particle size of 242 nm showed enhanced SAMe permeability in comparison to pure drug. Delayed drug release obtained by SLN nanocomposite particles indicated the protection of drug-loaded SLN in the acidic gastric medium and their intact presence in the intestine. SAMe solution or particle suspensions were prepared using 0.45 (w/v) hydroxypropyl methylcellulose aqueous solution to be applied to groups of animals for pharmacokinetic studies. In vivo pharmacokinetic parameters revealed enhancement in relative bioavailability of SAMe upon oral administration of SLN based formulations. This was attributed to intact absorption of lipid matrix through lymphatic path. A statistically significant increase in SAMe plasma levels was obtained at 15th and 30th minutes with SAMe-SLN and at 2nd and 4th hours with SAMe-SLN-NC.