Results 81 to 90 of about 1,034,422 (264)

Polar Lipid Fraction E from Sulfolobus acidocaldarius and Dipalmitoylphosphatidylcholine Can Form Stable yet Thermo-Sensitive Tetraether/Diester Hybrid Archaeosomes with Controlled Release Capability

International Journal of Molecular Sciences, 2020
Archaeosomes have drawn increasing attention in recent years as novel nano-carriers for therapeutics. The main obstacle of using archaeosomes for therapeutics delivery has been the lack of an efficient method to trigger the release of entrapped content ...
Umme Ayesa, P. Chong
semanticscholar   +1 more source

Collapsed bipolar glycolipids at the air/water interface: Effect of the stereochemistry on the stretched/bent conformations.

, 2013
International audienceThis article describes a comparative study of several bipolar lipids derived from tetraether structures. The sole structural difference between the main two glycolipids is a unique stereochemical variation on a cyclopentyl ring ...
Benvegnu, Thierry, Jacquemet, Alicia, Lemiègre, Loïc, Terme, Nolwenn, Vié, Véronique   +4 more
core   +3 more sources

Stabilized tetraether lipids based particles guided prophyrins photodynamic therapy [PDF]

Drug Delivery, 2018
Photodynamic therapy (PDT) that involves ergonomically delivered light in the presence of archetypical photosensitizer such as Protoporphyrin IX (PpIX) is a time-honored missile strategy in cancer therapeutics. Yet, the premature release of PpIX is one of the most abundant dilemma encounters the therapeutic outcomes of PDT due to associated toxicity ...
Samia M. Omar, Boris Strehlow, Gihan Mahmoud, Marc Schneider, Jarmila Jedelská, Udo Bakowsky   +5 more
openaire   +3 more sources

Microbial Membrane Tetraether lipid-inferred paleohydrology and paleotemperature of Lake Chenghai during the Pleistocene-Holocene transition

, 2019
. Over the past few decades, paleoenvironmental studies in the Indian Summer Monsoon (ISM) region have mainly focused on precipitation change, with few published terrestrial temperature records from the region.
Weiwei Sun, E. Zhang, Jie Chang, J. Shulmeister, M. Bird, Cheng Zhao, Q. Jiang, Ji Shen   +7 more
semanticscholar   +1 more source

Biosynthesis of archaeal membrane ether lipids

Frontiers in Microbiology, 2014
A vital function of the cell membrane in all living organism is to maintain the membrane permeability barrier and fluidity. The composition of the phospholipid bilayer is distinct in archaea when compared to bacteria and eukarya.
Samta eJain, Samta eJain, Antonella eCaforio, Arnold J. M. Driessen   +3 more
doaj   +1 more source

Oxygen Depletion in Lake Waters May Skew brGDGT‐Inferred Temperatures by More Than 10°C

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract Branched glycerol dialkyl glycerol tetraether (brGDGT) paleothermometry is an important tool for paleoclimate research. Oxygen availability has been suggested to skew brGDGT‐inferred temperatures, but the effect is poorly constrained. Here, we examine the influence of dissolved oxygen (DO) on brGDGTs in lacustrine water filtrates. By examining
Jonathan H. Raberg, Gregory A. de Wet, Áslaug Geirsdóttir, Julio Sepúlveda, Gifford H. Miller   +4 more
wiley   +1 more source

Late Holocene Human Impact on Tropical Soil Erosion in the Maritime Continent

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract Human activities have profoundly modified the fluxes in the global sediment cycle. However, the anthropogenic forcing on soil erosion beyond instrumental records or historical documentation is largely unknown. Here we analyze markers for low‐intensity fires and soil erosion in East Java over the past 5,000 years.
Yanming Ruan, Mahyar Mohtadi, Lydie M. Dupont, Dierk Hebbeln, Sander van der Kaars, Wenwen Chen, Ellen C. Hopmans, Stefan Schouten, Matthias Prange, Jens Hefter, Gesine Mollenhauer, Enno Schefuß   +11 more
wiley   +1 more source

Revised calibration of the mbt-cbt paleotemperature proxy based on branched tetraether membrane lipids in surface soils [PDF]

, 2012
The MBT-CBT proxy for the reconstruction of paleotemperatures and past soil pH is based on the distribution of branched glycerol dialkyl glycerol tetraether (brGDGT) membrane lipids.
Ballantyne, Bartlett, Bendle, Blaga, Bonnefille, Colinvaux, Eberle, Eldrett, Francien Peterse, Hopmans, Huguet, Jaap S. Sinninghe Damsté, Jaap van der Meer, Johan W.H. Weijers, Jung-Hyun Kim, Kim, Kurek, Lotter, Montgomery, Noah Fierer, Pearson, Peterse, Peterse, Peterse, Peterse, Peterse, Powers, Robert B. Jackson, Rueda, Schouten, Schouten, Sinninghe Damsté, Sinninghe Damsté, Sinninghe Damsté, Sinninghe Damsté, Smerdon, Smerdon, Stefan Schouten, Sun, Tierney, Tierney, Tierney, Tierney, Walsh, Weijers, Weijers, Weijers, Weijers, Weijers, Weijers, Wing, Zink   +51 more
core   +2 more sources

Exploring the Influence of Temperature on brGDGT Distributions in Chilean Lakes and Soils: A Comparative Analysis of In Situ Measured and Modeled Temperature Data

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 7, July 2025.
Abstract Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial membrane‐spanning lipids that change in response to temperature variations. Their adaptability to temperature and widespread presence in sedimentary archives make brGDGTs a valuable tool for reconstructing past temperatures.
Molly D. O’Beirne, Jamie R. Vornlocher, Laura Lopera‐Congote, Emeka E. Emordi, Godspower Ubit, Sergio Contreras, A. Araneda, E. Tejos, J. Moscoso, Josef P. Werne   +9 more
wiley   +1 more source

Occurrence and distribution of glycerol dialkyl glycerol tetraethers in a French peat bog

, 2010
International audienceThe present study was aimed at examining the distribution and abundance of glycerol dialkyl glycerol tetraethers (GDGTs) of archaeal and bacterial origin in peat samples from surface and deep (ca.
Derenne, Sylvie, Fosse, Céline, Huguet, Arnaud, Laggoun-Défarge, Fatima, Toussaint, Marie-Laure   +4 more
core   +3 more sources