Results 51 to 60 of about 230,886 (294)

Evidence of O2 consumption in underway seawater lines: Implications for air-sea O2 and CO2 fluxes [PDF]

, 2010
We observed O2 deficits of 0.5 to 2.0% (1 to 4 mol/kg) in the underway seawater lines of three different ships. Deficits in O2/Ar and isotopic enrichments in dissolved O2 observed in underway seawater lines indicate a respiratory removal process.
Hamme, Roberta C., Juranek, Lauren W., Kaiser, Jan, Quay, Paul D., Wanninkhof, Rik   +4 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Global upper ocean dissolved oxygen budget for constraining the biological carbon pump

Communications Earth & Environment
One mechanism by which the ocean uptakes carbon dioxide is through the biological carbon fixation and its subsequent transport to the deep ocean, a process known as the biological carbon pump.
Ryohei Yamaguchi, Shinya Kouketsu, Naohiro Kosugi, Masao Ishii   +3 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

ATG4B is required for mTORC1‐mediated anabolic activity and is associated with clinical outcomes in non‐small cell lung cancer

FEBS Open Bio, EarlyView.
The relationship between anabolic and catabolic processes governing lung cancer cell growth is nuanced. We show that ATG4B, an autophagy regulator, is elevated in lung cancer and that high ATG4B is associated with worse patient outcomes. Targeting ATG4B in cells reduces growth, protein synthesis, and mTORC1 activity, demonstrating a new relationship ...
Patrick J. Ryan, Bethany C. Guerra, Selina Uranga, Jessica M. Cardin, Steven E. Riechman, Mariana Janini Gomes, James D. Fluckey   +6 more
wiley   +1 more source

Enhanced North Pacific biological pump contributed to atmospheric carbon dioxide plateau during the Bølling-Allerød period

Communications Earth & Environment
Carbon dioxide release from the Southern Ocean is generally recognized as a primary factor driving atmospheric carbon dioxide rise during the deglaciation; however, the Bølling-Allerød period saw an atmospheric carbon dioxide plateau, despite diminished ...
Xiaowei Zhu, Shengyi Mao, Fen Chen, Gang Li, Wen Yan   +4 more
doaj   +1 more source

Sinking krill carcasses as hotspots of microbial carbon and nitrogen cycling in the Arctic

Frontiers in Marine Science, 2022
Krill represent a major link between primary producers and higher trophic levels in polar marine food webs. Potential links to lower trophic levels, such as heterotrophic microorganisms, are less well documented.
Belén Franco-Cisterna, Belén Franco-Cisterna, Anni Glud, Anni Glud, Laura A. Bristow, Arka Rudra, Hamed Sanei, Mie H.S. Winding, Torkel G. Nielsen, Ronnie N. Glud, Ronnie N. Glud, Ronnie N. Glud, Ronnie N. Glud, Peter Stief, Peter Stief   +14 more
doaj   +1 more source

Antibiofilm activity of a chionodracine‐derived peptide by NMR‐based metabolomics of cell‐free supernatant of Acinetobacter baumannii clinical strains

FEBS Open Bio, EarlyView.
KHS‐Cnd peptide is able to impair biofilm formation and disaggregate mature biofilms in Acinetobacter baumannii clinical isolates. Differences in extracellular metabolites reflect changes in biofilm metabolism due to KHS‐Cnd treatment. Among the differentially represented extracellular metabolites upon KHS‐Cnd treatment, the significantly altered ...
Fernando Porcelli, Enrico Landi, Francesco Maiurano, Irene Paris, Rosanna Papa, Marco Artini, Laura Selan, Stefano Borocci, Francesco Buonocore, Esther Imperlini   +9 more
wiley   +1 more source

Effects of migrating mesopelagic fishes on the biological carbon pump

Marine Ecology Progress Series, 2023
Mesopelagic fishes and invertebrates contribute to the biological carbon pump (BCP) through direct and indirect effects on the gravitational, diffusive, and migrant (active) fluxes. Here, we analyzed the effect of these organisms on total carbon export and sequestration using an idealized depth-resolved food-web model.
Aksnes, Dag Lorents, Løtvedt, Anita Stene, Lindemann, Christian, Calleja, Maria Ll., Morán, Xosé Anxelu G., Kaartvedt, Stein, Thingstad, T. Frede   +6 more
openaire   +6 more sources

Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

FEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen, Jia‐Ci Jhang, Chun‐Yi Peng, Quốc Cường Nguyễn, Feng‐Huei Lin, Hung‐Ming Wu, Shankung Lin   +6 more
wiley   +1 more source