Periodic ER-plasma membrane junctions support long-range Ca signal integration in dendrites.

Neuronal dendrites must relay synaptic inputs over long distances, but the mechanisms by which activity-evoked intracellular signals propagate over macroscopic distances remain unclear. Here, we discovered a system of periodically arranged endoplasmic reticulum-plasma membrane (ER-PM) junctions tiling the plasma membrane of dendrites at ∼1 μm intervals, interlinked by a meshwork of ER tubules patterned in a ladder-like array. Populated with Junctophilin-linked plasma membrane voltage-gated Ca channels and ER Ca-release channels (ryanodine receptors), ER-PM junctions are hubs for ER-PM crosstalk, fine-tuning of Ca homeostasis, and local activation of the Ca/calmodulin-dependent protein kinase II.

CASPR2-related epilepsy: A distinctive and unrecognized form of epilepsy in adult and elderly males.

Objective: The aim of this study was to describe the clinical features of contactin-associated protein-like 2 (CASPR2)-IgG-associated seizures.

Methods: Nine patients were retrospectively collected from two epilepsy centers. For each patient we obtained a full clinical, neurophysiological, and MRI study along with detection of antineuronal autoantibodies from serum and CSF.

Rituximab versus placebo for chronic inflammatory demyelinating polyradiculoneuropathy: a randomized trial.

Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) often requires prolonged ongoing treatment to prevent worsening. The efficacy of rituximab in preventing worsening after the discontinuation of immunoglobulin therapy in CIDP patients was assessed. In this randomized, double-blind, placebo-controlled study, conducted at seven Italian hospitals, CIDP patients under immunoglobulin therapy were assigned to receive either rituximab (1g on days 1, 15, and 180±7) or placebo.

Kinetics of hepatitis B virus replication in anti-HBc positive/HBsAg-negative people with HIV switching to tenofovir sparing therapy.

Objectives: To unravel the still unexplored HBV-replicative kinetics in anti-HBc-positive/HBsAg-negative people-with-HIV (PWH) suspending tenofovir disoproxil-fumarate/tenofovir-alafenamide (TDF/TAF).

Methods: A total of 101 anti-HBc-positive/HBsAg-negative PWH switching to TDF/TAF-sparing therapy were included. Serum HBV-DNA and HBV-RNA were quantified by droplet-digital-PCR at switching (T0), within 12 months (T1) and 12-24 months postswitch (T2).

Anti-LGI1 encephalitis and Langerhans cell histiocytosis: Two associated entities? A case report.

Autoimmune encephalitis (AE) is an immune-mediated condition that induces brain inflammation due to several neural-specific autoantibodies. The main triggering and predisposing factors are infections, genetics, the use of immune checkpoint inhibitors and tumors. We report a case of a 57-year-old male with a biopsy-confirmed Langerhans cell histiocytosis (LCH) and a concomitant anti-LGI1 encephalitis discussing a possible relationship in the pathogenesis of these phenomena.