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https://doi.org/10.5599/admet.797

Permeation characteristics of tetracyclines in parallel artificial membrane permeation assay II: Effect of divalent metal ions and mucin

Sachika Yamauchi ; Molecular Pharmaceutics Lab., College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
Daisuke Inoue orcid id orcid.org/0000-0003-0219-4331 ; Molecular Pharmaceutics Lab., College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga 525-8577, Japan
Kiyohiko Sugano orcid id orcid.org/0000-0001-5652-1786 ; Molecular Pharmaceutics Lab., College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1, Noji-higashi, Kusatsu, Shiga 525-8577, Japan


Puni tekst: engleski pdf 1.027 Kb

str. 129-138

preuzimanja: 451

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Sažetak

The bioavailability of tetracyclines is markedly decreased when co-administered with antacids, milk, or food containing Ca2+. Previously, it was suggested that the effective intestinal permeation of tetracycline (TC) was decreased due to Ca2+ linked mucin binding in the mucosal side. In the present study, we investigated the effect of Ca2+, Mg2+, and mucin on the membrane permeation of six tetracyclines (TC, oxytetracycline (OTC), minocycline (MINO), doxycycline (DOXY), demeclocycline (DMCTC), and chlortetracycline (CTC)). The membrane permeability values (Pe) of tetracyclines were measured by the parallel artificial membrane permeation assay (PAMPA) using soybean lecithin – decane (SL–PAMPA) and octanol (OCT–PAMPA) membranes. In SL–PAMPA, Ca2+ markedly decreased the Pe values of all tetracyclines. In OCT–PAMPA, Ca2+ increased the Pe values of TC, CTC, and DMCTC, but not DOXY, OTC, and MINO. Mg2+ decreased the Pe values of all tetracyclines in both SL–PAMPA and OCT–PAMPA (except for CTC in OCT–PAMPA). The addition of mucin had little or no effect in all cases. In contrast to the previously suggested mechanism, the results of the present study suggested that Ca2+ chelate formation decreased the membrane permeation of tetracyclines, irrespective of Ca2+ linked mucin binding. Molecular speciation analysis suggested that the permeation of TC – metal chelates was negligibly small in SL-PAMPA.

Ključne riječi

artificial membrane; permeability; phospholipid; tetracycline; metal; cation; mucin

Hrčak ID:

239166

URI

https://hrcak.srce.hr/239166

Datum izdavanja:

15.6.2020.

Posjeta: 916 *