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AANEM News Express

Science News: Retrospective Analysis of Eculizumab in Patients with Acetylcholine Receptor Antibody-Negative Myasthenia Gravis: A Case Series

Eculizumab has been approved and used for AChR antibody positive myasthenia gravis but little is known about its efficacy for AChR seronegative cases.

Science News: Placebo Effect in Chronic Inflammatory Demyelinating Polyneuropathy: The PATH Study and a Systematic Review

Placebos (pharmacologically inert preparations) are used in treatment trials to assess the true effect of trial medication. Placebo responses have been noted in CIDP trials including the most recent PATH trial investigating subcutaneous IVIG as maintenance therapy.

Science News: Utility of Nerve Conduction Studies and Ultrasonography in Ulnar Neuropathies at the Elbow of Different Severity

This study compared ultrasound (US), short segment nerve conduction studies (SSNCS), and 10 cm NCS across the elbow, for detection and localization of Ulnar nerve compression at the elbow (UNE).

Science News: COVID-19 and Neuromuscular Disorders

Drs. Guidon and Amato provide a timely review of the COVID-19 pandemic's potential effects on patients with neuromuscular disorders. They cover the broad spectrum of how the pandemic affected the delivery of neuromuscular care to education and research.

Science News: ASC-1 is a Cell Cycle Regulator Associated With Severe and Mild Forms of Myopathy

Dysfunction of the transcriptional coactivator ASC-1 (activating signal cointegrator 1) complex has been demonstrated in forms of ALS, SMA, and congenital myopathies. Mutations in TRIP4 gene, which encodes ASC-1, has been described recently in a family with congenital myopathy.

Science News: A Model to Study Myelinated Fiber Degeneration and Regeneration in Human Skin

The authors sought to describe changes with degeneration and regeneration of large myelinated fibers and Meissner corpuscles (MC) in a cohort of patients with median nerve compression at the wrist, pre and post surgery.

Science News: Antibody and Macrophage-Mediated Segmental Demyelination in Chronic Inflammatory Demyelinating Polyneuropathy

Retrospective study of immune reactivity to myelin in 94 patients with diagnoses of chronic inflammatory demyelinating polyneuropathy (CIDP). Nerve biopsy was done for those who did not fulfill these criteria at first assessment.

Science News: Antidiabetics, Statins, and the Risk of Amyotrophic Lateral Sclerosis

Submitted by Nandita Keole, MD

Drugs used to treat glucose or lipid metabolism have been suggested as risk factors for ALS. Population based case control study ( 5 controls for each case of ALS) done in Sweden to examine the association between statins, antidiabetics, and subsequent development of ALS.

Science News: Peripheral Nerve Regeneration Using a Bio 3D Conduit from Undifferentiated Bone Marrow Stromal Cells

Submitted by: Lisa M. Williams, MD
Edited by: Bryan DeSouza, MD

The repair and regeneration of peripheral nerves and restoration of function in nerve injuries has been has been an active but complex area of research for many years. Neurotrophic factors such as recombinant human nerve growth factor (rh-NGF) have been evaluated in clinical trials, but had mixed results. Currently, there is a growing area of interest in combining stem cells with hybrid biological technology to evaluate the utility in nerve repair and regeneration. This article is an important first step in evaluating the safety and efficacy of these new hybrid biological technologies as they apply to NM and EDX medicine.