The gamma rhythm as a guardian of brain health DOI Creative Commons

Ana Maria Ichim,

Harald Bârzan,

Vasile V. Moca

и другие.

eLife, Год журнала: 2024, Номер 13

Опубликована: Ноя. 20, 2024

Gamma oscillations in brain activity (30–150 Hz) have been studied for over 80 years. Although the past three decades significant progress has made to try understand their functional role, a definitive answer regarding causal implication perception, cognition, and behavior still lies ahead of us. Here, we first review basic neural mechanisms that give rise gamma then focus on two main pillars exploration. The pillar examines major theories role information processing brain, also highlighting critical viewpoints. second reviews novel research direction proposes therapeutic oscillations, namely entrainment using sensory stimulation (GENUS). We extensively discuss both positive findings issues reproducibility GENUS. Going beyond gamma, propose third exploration, where generated endogenously by cortical circuits, is essential maintenance healthy circuit function. four classes interneurons, those expressing parvalbumin (PV), vasointestinal peptide (VIP), somatostatin (SST), nitric oxide synthase (NOS) take advantage endogenous perform active vasomotor control maintains homeostasis neuronal tissue. According this hypothesis, which call GAMER (GAmma MEdiated ciRcuit maintenance), act as ‘servicing’ rhythm enables efficient translation into vascular responses are optimal neurometabolic processes. an extension GENUS, rather than entrained plays fundamental role. Finally, several experiments test hypothesis.

Язык: Английский

Lycium barbarum polysaccharide ameliorates corticosterone-induced cognition decline with modulation of CRHR1 DOI Creative Commons
Xiaoxiao Shi, Xiaofeng Tian, Bin He

и другие.

Brain Research Bulletin, Год журнала: 2025, Номер unknown, С. 111346 - 111346

Опубликована: Апрель 1, 2025

Lycium barbarum polysaccharide (LBP) has anti-inflammatory, anti-oxidation and anti-aging properties, but the mechanism of LBP on stress-induced cognitive dysfunction caused by elevated GC level is still unclear. Therefore, present study aimed to investigate corticosterone-injected(CORT-injected) impairment. The rat model was induced corticosterone in vivo. Water maze test HE staining were used observe effect function brain morphology CORT-injected rats. RT-qPCR, Western blot, immunofluorescence detect expression proteins. SH-SY5Y cells treated with CORT D-gal vitro, respectively. cell proliferation observed, western blotting detected protein expressions. In this study, treatment ameliorated CORT-induced learning protected hypothalamic hippocampal neurons from injury addition, reduced plasma concentrations results also indicated that enhanced synapsis-related proteins PSD95 SYN up-regulating CRHR1 RGS2 hippocampus hypothalamus group. Meanwhile, we confirmed - D-Gal-induced further verified changes CRHR1, RGS2, synapse-related This demonstrates cognition decline regulating CRHR1. may represent a potential drug for prevention patients increased GCs.

Язык: Английский

Процитировано

0

The gamma rhythm as a guardian of brain health DOI Creative Commons

Ana Maria Ichim,

Harald Bârzan,

Vasile V. Moca

и другие.

eLife, Год журнала: 2024, Номер 13

Опубликована: Ноя. 20, 2024

Gamma oscillations in brain activity (30–150 Hz) have been studied for over 80 years. Although the past three decades significant progress has made to try understand their functional role, a definitive answer regarding causal implication perception, cognition, and behavior still lies ahead of us. Here, we first review basic neural mechanisms that give rise gamma then focus on two main pillars exploration. The pillar examines major theories role information processing brain, also highlighting critical viewpoints. second reviews novel research direction proposes therapeutic oscillations, namely entrainment using sensory stimulation (GENUS). We extensively discuss both positive findings issues reproducibility GENUS. Going beyond gamma, propose third exploration, where generated endogenously by cortical circuits, is essential maintenance healthy circuit function. four classes interneurons, those expressing parvalbumin (PV), vasointestinal peptide (VIP), somatostatin (SST), nitric oxide synthase (NOS) take advantage endogenous perform active vasomotor control maintains homeostasis neuronal tissue. According this hypothesis, which call GAMER (GAmma MEdiated ciRcuit maintenance), act as ‘servicing’ rhythm enables efficient translation into vascular responses are optimal neurometabolic processes. an extension GENUS, rather than entrained plays fundamental role. Finally, several experiments test hypothesis.

Язык: Английский

Процитировано

1