Results 81 to 90 of about 41,546 (228)
High‐Resolution LC–MS/MS Characterization of Budmunchiamine‐Type Alkaloids in Albizia niopoides
Rapid Communications in Mass Spectrometry, Volume 40, Issue 19, 15 October 2026.ABSTRACT Rationale Budmunchiamines are macrocyclic spermine alkaloids that constitute a distinctive class of polyamine natural products predominantly found in species of the genus Albizia. Comprehensive characterization of these compounds remains challenging because of their structural diversity and the limited availability of reference standards. This
Maria L. A. Majevski +6 more
wiley +1 more source
Biology Open, 2018 Polyamines play a regulatory role in eukaryotic cell growth and morphogenesis. Despite many molecular advances, the underlying mechanism of action remains unclear.
Antônio Jesus Dorighetto Cogo +5 more
doaj +1 more source
ChemPhysChem, Volume 27, Issue 15, 14 August 2026.One‐electron oxidation of purine and pyrimidine bases of isolated and cellular DNA generates related reactive base radical cations that are converted into final decomposition products through deprotonation and hydration. In the case of guanine, the most susceptible nucleobase to one‐electron oxidants, 8‐hydroxy‐7,8‐dihydroguanyl radical, thus formed by
Jean Cadet +3 more
wiley +1 more source
Scientific Reports, 2018 Autolysosomal dysfunction and unstable microtubules are hallmarks of chronic neurodegenerative diseases associated with misfolded proteins. Investigation of impaired protein quality control and clearance systems could therefore provide an important ...
Kanchan Phadwal +5 more
semanticscholar +1 more source
Microbiota–Neuroinflammation Crosstalk in Primary Brain Tumors: Focus on Glioblastoma
Brain and Behavior, Volume 16, Issue 8, August 2026.Microbiota–neuroinflammation crosstalk in GBM. The schematic summarizes how gut microbiota and microbiota‐derived signals may influence GBM biology through gut–brain signaling, microbial metabolites, systemic immune modulation, BBB‐related pathways, tumor‐associated microbial signals, and immune‐metabolic changes within the GBM microenvironment.
Tareq Nayef AlRamadneh +8 more
wiley +1 more source
Food Science &Nutrition, Volume 14, Issue 8, August 2026.Turkey breast meat was marinated with lactic acid (pH 4.0), yogurt whey, kefir, or yogurt (1:1, w/w) for 24 h at 4°C and then cooked at 185°C for 15 min. Fermented dairy‐based marinades improved meat quality without promoting excessive biogenic amine formation.
Gülsüme Biçakci, Ercan Sarica
wiley +1 more source
Astrocytic mGluR5 Regulation of Synaptic Transmission is Activity‐Dependent in Adult Rats
Glia, Volume 74, Issue 8, August 2026.In adulthood, astrocytic mGluR5 increases synaptic efficacy through presynaptic A2ARs. This occurs when a small number of synapses are activated simultaneously. This pathway is abolished when numerous synapses are recruited. ABSTRACT Data accumulated over the last two decades have demonstrated that astrocytes play key roles in the regulation of ...
Sarah Mountadem +18 more
wiley +1 more source
Spermine inhibits Vibrio cholerae biofilm formation through the NspS–MbaA polyamine signaling system
Journal of Biological Chemistry, 2017 The aquatic bacterium and human intestinal pathogen, Vibrio cholerae, senses and responds to a variety of environment-specific cues to regulate biofilm formation. Specifically, the polyamines norspermidine and spermidine enhance and repress V.
Richard C Sobe +9 more
semanticscholar +1 more source
Polyamine stress at high pH in
BMC Microbiology, 2005 Background Polyamines such as spermine and spermidine are required for growth of Escherichia coli; they interact with nucleic acids, and they bind to ribosomes. Polyamines block porins and decrease membrane permeability, activities that may protect cells
Tate Daniel P +4 more
doaj +1 more source