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In the human heart, the binding of cyclic adenosine monophosphate (cAMP), a second messenger, to hyperpolarization and cyclic nucleotide-gated (HCN) regulates the automaticity of pacemaker cells. Recent single-molecule binding studies show that cAMP bound to each subunit of purified tetrameric HCN channels independently, in contrast to findings in cells. To explore the lipid membrane's role in cAMP regulation, we reconstituted purified human HCN channels in various lipid nanodiscs and resolved single molecule ligand-binding dynamics.
View Article and Find Full Text PDFNeurochemical signals like dopamine (DA) play a crucial role in a variety of brain functions through intricate interactions with other neuromodulators and intracellular signaling pathways. However, studying these complex networks has been hindered by the challenge of detecting multiple neurochemicals simultaneously. To overcome this limitation, we developed a single-protein chemigenetic DA sensor, HaloDA1.
View Article and Find Full Text PDFThe experiences of attending an international veteran sporting competition and preparatory camp for Team Ukraine during the Russo-Ukrainian conflict.
Front Sports Act Living
December 2024
BRAVO VICTOR, London, United Kingdom.
Introduction: This article offers unique insight into Team Ukraine's experiences of attending an international sporting event for veterans living with disability and injured active-duty personnel (the United States' Department of Defense Warrior Games, "The Games") and a 5-week preparatory camp in the United Kingdom (UK).
Methods: A survey gathered qualitative data at three time points: during the second and final week of training camp, and the in the two weeks immediately following participation at The Games. Forty-four out of 55 members of Team Ukraine (including veterans, active-duty personnel, support staff, and family members) provided responses in Survey 1, 20 in Survey 2, and 18 in Survey 3.
[The mechanism of GSK-3β/CREB signaling pathway regulating macrophage pyroptosis and participating in the occurrence and development of diabetic foot ulcer].
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi
December 2024
Department of Endocrinology, The Fourth Hospital of Changsha(Changsha Hospital of Hunan Normal University), Changsha 410000, China.
Objective To investigate the role and possible mechanism of glycogen synthase kinase-3 beta (GSK-3β)/cAMP response element binding protein (CREB) signaling pathway in regulating macrophage pyroptosis in the pathogenesis and development of diabetic foot ulcer (DFU). Methods Thirty rats were randomly divided into control group, DFU group and GSK-3β inhibited group, with 10 rats in each group. Fasting blood glucose (FBG) was detected by dynamic blood glucose detector.
View Article and Find Full Text PDFHypoxic conditions affect transcriptome of endometrial stromal cells in endometriosis and promote TGFBI axis.
Front Endocrinol (Lausanne)
January 2025
Celvia CC AS, Tartu, Estonia.
Background: Endometriosis is characterized by the ectopic growth of endometrial-like cells, causing chronic pelvic pain, adhesions and impaired fertility in women of reproductive age. Usually, these lesions grow in the peritoneal cavity in a hypoxic environment. Hypoxia is known to affect gene expression and protein kinase (PK) activity.
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