O-GlcNAcylation is necessary for maturation of podocyte foot processes, particularly after birth. Our study provided new insights into podocyte biology and O-GlcNAcylation.

We previously found that the greatest salivation response in healthy human subjects is produced by facial vibrotactile stimulation of 89 Hz frequency with 1.9 μm amplitude (89 Hz-S), as reported by Hiraba et al. (2012, 20011, and 2008). We assessed relationships between the blood flow to brain via functional near-infrared spectroscopy (fNIRS) in the frontal cortex and autonomic parameters. We used the heart rate (HRV: heart rate variability analysis in RR intervals), pupil reflex, and salivation as parameters, but the interrelation between each parameter and fNIRS measures remains unknown. We were to investigate the relationship in response to established paradigms using simultaneously each parameter-fNIRS recording in healthy human subjects. Analysis of fNIRS was examined by a comparison of various values between before and after various stimuli (89 Hz-S, 114 Hz-S, listen to classic music, and “Ahh” vocalization). We confirmed that vibrotactile stimulation (89 Hz) of the parotid glands led to the greatest salivation, greatest increase in heart rate variability, and the most constricted pupils. Furthermore, there were almost no detectable differences between fNIRS during 89 Hz-S and fNIRS during listening to classical music of fans. Thus, vibrotactile stimulation of 89 Hz seems to evoke parasympathetic activity.

We report a case involving a 43-year-old Japanese woman with steroid-resistant focal segmental glomerular sclerosis (FSGS) and severe renal dysfunction, which was ameliorated by low-density lipoprotein apheresis (LDL-A). She had been treated with steroid therapy, but had experienced anuria for over 10 weeks and required hemodialysis. She was then treated with LDL-A, which resulted in improved urinary protein excretion and renal function. Her renal function recovered after 97 days of hemodialysis therapy. This case suggests that LDL-A may represent an effective rescue treatment in patients with FSGS and long-term anuria.

No abstract

Myeloperoxidase antineutrophil cytoplasmic antibody (MPO‐ANCA) associated glomerulonephritis is commonly diagnosed in elderly patients with acute kidney injury (AKI). Prompt diagnosis and rapid initiation of appropriate therapy are essential to avoid the development of ANCA‐associated vasculitis, which can be a life‐ and organ‐threatening disease. We report a rare case of a 91‐year‐old male with a high MPO‐ANCA titer, who took allopurinol, and showed no symptoms for >20 months, following which sudden AKI and severe bronchial asthma necessitated hemodialysis and steroid administration. Chronically elevated ANCA titers should be examined for causes and followed up to limit the risk of subsequent disease development.