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Unlabelled: Mild hypoxic-ischemic encephalopathy is common in neonates with no evidence-based therapies, and 30-40% of patients experience adverse outcomes. The nature and progression of mild injury is poorly understood. Thus, we studied the evolution of mild perinatal brain injury using longitudinal two-photon imaging of transgenic fluorescent proteins as a novel readout of neuronal viability and activity at cellular resolution.
View Article and Find Full Text PDFL-type Calcium Channel Blockade Worsens Glucose Tolerance and β-Cell Function in C57BL6/J Mice Exposed to Intermittent Hypoxia.
Am J Physiol Endocrinol Metab
January 2025
Division of Pulmonary, Critical Care, and Sleep Medicine, University of Miami, Miller School of Medicine, Miami Florida.
Intermittent hypoxemia (IH), a pathophysiologic consequence of obstructive sleep apnea (OSA), adversely affects insulin sensitivity, insulin secretion, and glucose tolerance. Nifedipine, an L-type calcium channel blocker frequently used for treatment of hypertension, can also impair insulin sensitivity and secretion. However, the cumulative and interactive repercussions of IH and nifedipine on glucose homeostasis have not been previously investigated.
View Article and Find Full Text PDFEngineered IL-21-Expressing Nanovesicles for Co-Delivery of GOX and Ferrocene to Induce Synergistic Anti-Tumor Effects.
Adv Healthc Mater
January 2025
School of Life Sciences, Anhui Medical University, Hefei, Anhui, 230032, China.
Glucose oxidase (GOX)-induced starvation is a safe treatment for tumor. However, the non-specific targeting of GOX and the plasticity of tumor metabolism lead to toxic side effects and low tumor mortality. Thus, it is necessary to develop a synergistic strategy with high tumor targeting specificity to enhance the mortality of GOX.
View Article and Find Full Text PDFBrain insulin resistance mediated cognitive impairment and neurodegeneration: Type-3 diabetes or Alzheimer's Disease.
Acta Neurol Belg
January 2025
Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, 124001, Haryana, India.
Insulin resistance is a condition characterized by the attenuated biological response in the presence of normal or elevated insulin level and therefore is characterized by the impaired sensitivity to insulin and impaired glucose disposal and utilization. Insulin resistance in brain/Brain insulin resistance (BIR) is accompanied by the various manifestations including alteration in glucose sensing by hypothalamic neurons, impaired sympathetic outflow in response to hypoglycemia, increased ROS production, impaired mitochondrial oxygen consumption in the brain, cognitive deficits and neuronal cell damage. It has been reported that the disrupted insulin signaling is accompanied by the reduced expression of insulin receptor (IR)/insulin receptor substrate 1 (IRS1)/PI3K/AKT and IGF-1 receptor (IGF-1R)/IRS2/PI3K pathways.
View Article and Find Full Text PDFGYY4137 ameliorates blood brain barrier damage by inhibiting autophagy mediated occludin degradation in cardiac arrest and resuscitation.
Sci Rep
January 2025
Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang District, Harbin, 150086, Heilongjiang Province, China.
Cardiopulmonary resuscitation (CPR) after cardiac arrest (CA) is an important cause of neurological impairment and leads to considerable morbidity and mortality. The stability of the blood-brain barrier (BBB) is crucial for minimizing secondary neurological damage and improving long-term prognosis. However, the precise mechanisms and regulatory pathways that contribute to BBB dysfunction after CPR remain elusive.
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