Results 121 to 130 of about 10,486,597 (353)

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

open access: yesMolecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee   +8 more
wiley   +1 more source

Species Composition and Diversity of Hawk Populations in Northeastern Arkansas [PDF]

open access: yes, 1978
Species composition and diversity of hawk populations were analyzed for northeastern Arkansas by the use of roadside censuses conducted in September through April from 1974- 1977.
Hanebrink, Earl L.   +2 more
core   +2 more sources

Assemblages of herb-dwelling spiders (Araneae) of various steppe types in Ukraine and the Central Chernozem region of Russia [PDF]

open access: yes, 2012
A total of 107 spider species from 15 families were recorded in the herbaceous vegetation of the steppe ecosystems of Ukraine and the Central Chernozem region of Russia. Araneidae, Thomisidae, Salticidae and Theridiidae were the most species-rich.
Polchaninova, Nina Y.
core   +2 more sources

СТРУКТУРА И ДИНАМИКА НА ФИТОПЛАНКТОНА В ЯЗОВИР „КЪРДЖАЛИ“

open access: yesЖивотновъдни науки, 2014
Subject of study were the species composition and seasonal dynamics of phytoplankton in “Kardzhali” damlake. The presence of 67 taxa of 7 divisions was established: Cyanoprokaryota (12), Chlorophyta (21), Streptophyta (7), Pyrrhophyta (2), Euglenophyta (
КОСТАДИН ДОЧИН
doaj  

Temporal variation in the abundance and composition of phytoplankton species, collected with net in the Acapulco Bay, Mexico

open access: yesRevista Bio Ciencias, 2015
Phytoplankton community species were collected from September 2009 to April 2010 in Acapulco Bay, Mexico, in order to determine their composition and abundance. Samples were collected in two stations within the Bay.
Moreno-Díaz, G.   +5 more
doaj   +1 more source

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

open access: yesMolecular 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

Periodic and quasiperiodic control processes in the biocommunity species composition preserving problem

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The dynamical model describing several stages of interaction between populations of predators and preys in some area is proposed. The transition from one stage to another is determined by the values of the function which has the sense of trophical ...
Alexandra Ivanova, Alexander Kirillov
doaj   +1 more source

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

open access: yesMolecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley   +5 more
wiley   +1 more source

Metazoan Microzooplankton in the Crimean Coastal Waters of the Black and Azov Seas in Spring: Composition, Abundance and Spatial Distribution [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2019
The study was carried out during the 84th expedition of RV “Professor Vodyanitsky” in the coastal waters of the Black and Azov Seas from 19 to 26 April 2016.
Sergey A. Seregin, Elena V. Popova
doaj  

Orchid bee fauna responds to habitat complexity on a savanna area (Cerrado) in Brazil.

open access: yesSociobiology, 2016
Habitat structure and complexity may broadly affect the diversity and composition of a variety of fauna in terrestrial systems. Here we investigated responses of orchid bee assemblages to habitat complexity, with the aim of assessing complexity as a ...
Yasmine Antonini   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy