Rising Voltage-Gated Potassium Channel Antibody Level as a Possible Disease Progression Marker for Amyotrophic Lateral Sclerosis: A Case Report.

A subset of amyotrophic lateral sclerosis (ALS) patients tests positive for antibodies commonly associated with autoimmune neurological diseases, including voltage-gated potassium channel (VGKC)-complex antibodies. Although an autoimmune basis for ALS remains speculative, and immunomodulatory therapies have shown minimal benefit as of yet, isolated cases suggest that VGKC-complex antibodies may be relevant to disease type and progression. In this report, we present a case of ALS in which increasing VGKC-complex antibody levels correlated with clinical decline, raising the question of whether such antibodies could serve as biomarkers of progression in VGKC-complex antibody-positive ALS patients.

Stress disrupts engram ensembles in lateral amygdala to generalize threat memory in mice.

Stress induces aversive memory overgeneralization, a hallmark of many psychiatric disorders. Memories are encoded by a sparse ensemble of neurons active during an event (an engram ensemble). We examined the molecular and circuit processes mediating stress-induced threat memory overgeneralization in mice.

Transient Stuttering as a Sole Presentation in a Patient With a Subcentimeter Left Frontal Cortical Ischemic Infarct.

Stuttering is a complex speech disorder that is associated with a variety of etiologies, including psychological factors, metabolic disorders, and structural abnormalities. While stuttering is typically not caused by stroke, it is important to include it in the diagnostic evaluation, especially in patients with a history of neurological conditions. Of the clinical presentations of stroke-induced stuttering, transient stuttering following stroke has seldom been documented, as most patients who develop a stutter following a stroke end up developing permanent speech deficits.

Isolated Self-Limited Right Oculomotor Nerve Palsy With Positive Asialo-GM1 Antibody After SARS-CoV-2 mRNA Vaccination.

mRNA vaccines have been a critical tool in combating the current coronavirus disease 2019 (COVID-19) pandemic and demonstrated a high safety profile. However, rare cases of isolated oculomotor nerve palsy following vaccination have been reported. These few reported cases can be divided into two groups based on symptom onset: immediate and delayed.