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  • Gut Microbiome Metabolites and Progression of Parkinson’s Disease

    A Mendelian randomization study shows that trimethylamine N-oxide and its precursor metabolites are not associated with risk of Parkinson’s disease (PD) but have both positive and negative causal effects on some indicators of PD severity and progression.

  • Slow-Wave Sleep and Risk of Dementia

    In this long-term observational study of sleep efficiency in the Framingham Heart Study population, researchers found a strong correlation between a decline in duration of slow-wave sleep during aging and the risk of incident dementia from all causes. However, a direct cause-and-effect relationship cannot be determined from this observational study.

  • Repetitive Head Impacts and Chronic Traumatic Encephalopathy in Young Contact Sport Athletes

    In a first of its kind study, researchers found neuropathological markers suggestive of chronic traumatic encephalopathy (CTE) pathology in 41% (n = 152) of young contact sport athletes (< 30 years of age) at autopsy. Clinical measures (obtained retrospectively via informant report) assessing for cognitive and psychiatric/behavioral dysfunction, while elevated across most measures for the entire group, did not significantly differ between brain donors with and without a CTE diagnosis. Functional impairments also were not commonly found.

  • Telestroke Facilitates Care for Rural Stroke Patients

    In the year before the telestroke program was implemented, 11 of 15 eligible patients received thrombolytics in less than one hour, and there was a mean door-to-needle time of 61 minutes. After the telestroke program was implemented, 11 of 12 eligible patients received thrombolytics in less than one hour, with a mean door-to-needle time of just 38 minutes.

  • Acute Vertigo Caused by Herpes Zoster Oticus

    Herpes zoster oticus (HZO) and vestibular neuritis (VN) can be difficult to distinguish, but treatments may be different. Magnetic resonance imaging may help by showing inflammatory lesions in the vestibular nuclei or the proximal portions of the eighth nerves in HZO, but not VN.

  • Autoimmune Encephalitis After Herpes Simplex Virus Encephalitis

    A recent study showed that about 25% of patients with herpes simplex encephalitis develop neurological symptoms three to six weeks after the infection, pointing toward an autoimmune process with different neurological and psychiatric symptoms. Anti-neuronal antibodies, such as anti-N-methyl-D-aspartate receptor antibodies, have been found in this post-viral autoimmune encephalitis presentation.

  • Treatable Causes of Rapidly Progressive Dementias

    Many cases of rapidly progressive dementia are caused by prion diseases and have no effective treatments. But, with the greater awareness of the presentation for autoimmune encephalitis, these disorders make up an increasing percentage of presenting cases and can be aggressively and successfully treated. The STAM3P score helps to identify potentially treatable cases of this disorder.

  • Early Onset Post-Radiation Neuropathy

    Biopsy studies of early onset neuropathies seen after radiation therapy consistently show evidence of microvasculitis and other signs of inflammation. Early and rapid treatment with anti-inflammatory medications may be effective in stopping the progression and speeding up recovery.

  • Hepatitis E and Neuropathy

    In this prospective case-control study of patents with neuralgic amyotrophy, Guillain-Barré syndrome, and Bell’s palsy, an association with acute hepatitis E infection was demonstrated only with neuralgic amyotrophy.

  • Treating Preclinical Alzheimer’s Disease

    After studying an anti-amyloid antibody, solanezumab, researchers reported there was no benefit in reducing the likelihood of progression of cognitive impairment in patients with positive amyloid PET scans who started the trial cognitively unimpaired, compared to placebo.