The interaction of progesterone (PG), 17-hydroxyprogesterone (17-OHPG), 21-hydroxyprogesterone (21-OHPG), medroxyprogesterone (MP), medroxyprogesterone acetate (MPA), and dydrogesterone (DYG), with zwitterionic dipalmitoyl phosphatidylcholine (DPPC) multilamellar liposome, was investigated as a function of drug concentration using Fourier transform infrared spectroscopy and differential scanning calorimetry. The results reveal that progesterone and its derivatives changed the physical properties of the DPPC bilayers by decreasing the main phase-transition temperature (T m) and enthalpy (ΔH m), abolishing the pre-transition and disordering the membrane. From the thermodynamic parameters analysis, we concluded that PG, 21-OHPG, and MPA are localized inside the membrane. Whereas, the insertion of 17-OHPG in the lipid bilayers cannot be excluded in view of the significant decrease in the transition enthalpy at two molar ratios. MP and DYG are rather localized near the polar heads of phospholipids at the interface water-lipid bilayer. PG derivatives increase the membrane fluidity in the order: PG ≈ 21-OHPG ≈ MPA > 17-OHPG > MP ≈ DYG. The distinct effects produced by steroids are discussed in terms of hydrophobicity and chemical structure.
The Journal of Membrane Biology – Springer Journals
Published: Apr 25, 2015
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera