Low-frequency oscillations of murine skin microcirculations and periodic changes of [Ca ] and [NO] levels in murine endotheliocytes: An effect of provocative tests.

The five frequency intervals of skin blood oscillation were described: cardiac, respiratory, myogenic, neurogenic, and endothelial. The endothelial interval is derived into NO-independent and NO-dependent. The exact molecular, cell, or systemic mechanisms of endothelial oscillations generation are unclear.

Calcium activity in response to nAChR ligands in murine bone marrow granulocytes with different Gr-1 expression.

Polymorphonuclear neutrophilic granulocytes (PMNs) are the largest proportion of leukocytes in adult human blood that perform numerous functions, including phagocytosis, degranulation, generation of reactive oxygen species, and NETosis. Excessive neutrophil activity associates with hyperinflammation and tissue damage during pathologies such as inflammatory bowel disease, diabetes mellitus, tuberculosis, and coronavirus disease 2019. Nicotinic acetylcholine receptors (nAChRs) can modulate immune cells, including neutrophils, functions, therefore, nAChR ligands are considered as the potent agents for therapy of inflammation.

Changes in the behavior and oscillatory activity in cortical and subcortical brain structures induced by repeated l-glutamate injections to the medial septal area in guinea pigs.

Although the presence and importance of oscillations in cortical structures is well-documented, little is known about this rhythmic activity in subcortical areas. In waking guinea pigs, during their inattentive rest, local field potentials (LFPs) were recorded simultaneously in eight brain structures. In the cortical areas (prefrontal and entorhinal fields, hippocampus, dentate gyrus) and subcortical ones (medial and lateral septal nuclei, central nucleus of amygdala, and supramammillary nucleus), different types of oscillations were observed: delta (0.

Oxygen-dependent auto-oscillations of water luminescence triggered by the 1264 nm radiation.

A 5-min exposure of air-saturated bidistilled water to low-intensity laser infrared radiation at the wavelength of the electronic transition of dissolved oxygen to the singlet state ((3)∑(g)(-)→ (1)Δ(g)) induces, after a long latent period, auto-oscillations of water luminescence in the blue-green region, which last many hours. Laser irradiation causes the accumulation of hydrogen peroxide, which depends on the concentration of dissolved oxygen. The auto-oscillations do not arise if water is irradiated beyond the oxygen absorption band and if the oxygen is removed from water.