Mucosal organs such as the intestine are supported by a rich and complex underlying vasculature. For this reason, the intestine, and particularly barrier-protective epithelial cells, are susceptible to damage related to diminished blood flow and concomitant tissue hypoxia. We sought to identify compensatory mechanisms that protect epithelial barrier during episodes of intestinal hypoxia. Initia...

OBJECTIVES The aim of this study was to compare the expression of hypoxia-inducible factor 1α and vascular endothelial growth factor in small cell lung cancer and subtypes of non-small cell lung cancer and examine their relationships with clinicopathologic factors, response to treatment and survival. METHODS We examined samples obtained by bronchial endoscopic biopsy from 55 patients with ino...

Using human and rodent cells in vitro, we characterized a hypoxia-inducible signaling pathway as one of the pathways affected by carcinogenic nickel compounds. Acute exposure to nickel activates hypoxia-inducible transcription factor-1 (HIF-1), which strongly induces hypoxia-inducible genes, including the recently discovered tumor marker Cap43. This gene has been cloned based on its nickel indu...

Apelin has been identified as the endogenous ligand of the human orphan G protein-coupled receptor APJ. This peptide exerts a variety of cardiovascular effects and particularly acts as an activator of angiogenesis. Importantly, hypoxia has been reported to regulate apelin expression but the molecular mechanism underlying hypoxia-induced apelin expression and the relationship with the physiologi...

Increasing numbers of children are suffering from hypoxia-related visual impairments such as retinopathy prematurity. This study aimed to investigate whether all trans retinoic acid reverses hypoxia related in retinal vasculature. Oxygen induced model was established mouse and the expression ciliary neurotrophic factor, vascular endothelial growth factor inducible 1 detected. We found that leve...

OBJECTIVE To clarify the pathogenic factors and mechanisms underlying the development of concentric demyelinating lesions in Balo disease. METHODS We conducted serial clinical, MRI, and histopathologic assessments of concentric lesion formation in a case of relapsing Balo disease. RESULTS The patient experienced 2 attacks caused by left parietal and left frontal lesions in 5 years. In MRI f...