Mayo Clinic Laboratory and Pathology Research Roundup: August 26

By Samantha Rossi • August 26, 2019

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The research roundup provides an overview of the past week’s research from Mayo Clinic Laboratories consultants, including featured abstracts and a complete list of published studies and reviews.

Featured Abstract

Optic Neuritis in the Era of Biomarkers

The Optic Neuritis Treatment Trial (ONTT), a landmark study completed in 1991, stratified the risk of multiple sclerosis (MS) in patients with optic neuritis. Since that time, unique biomarkers for optic neuritis have been found. The antibody against aquaporin-4, (AQP4)-immunoglobulin G (IgG), discovered in 2004, was found to be both the pathologic cause and a reliable biomarker for neuromyelitis optica spectrum disorders (NMOSD). This finding enabled an expanded definition of the phenotype of NMOSD and improved treatment of the disease. Subsequently, myelin oligodendrocyte glycoprotein (MOG) IgG was recognized to be a marker for MOG-IgG-associated disorder (MOGAD), a central demyelinating disease characterized by recurrent optic neuritis, prominent disc edema, and perineural optic nerve enhancement on magnetic resonance imaging. Most MS disease-modifying agents are ineffective for AQP4-IgG-positive NMOSD and MOGAD. Because there are crucial differences in treatment and prognosis between MS, AQP4-IgG-positive NMOSD, and MOGAD, ophthalmologists should be aware of these new biomarkers of optic neuritis and incorporate their testing in all patients with atypical optic neuritis. Via Survey of Ophthamology.

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Published to PubMed This Week

• Practical Limitations of Monocyte Subset Repartitioning by Multiparametric Flow Cytometry in Chronic Myelomonocytic Leukemia.
  Blood Cancer Journal
• Chondroblastomas Presenting in Adulthood: A Study of 39 Patients with Emphasis on Histologic Features and Skeletal Distribution.
  Histopathology
• Detection of Naegleria fowleri, Acanthamoeba spp, and Balamuthia mandrillaris in Formalin-Fixed, Paraffin-Embedded Tissues by Real-Time Multiplex Polymerase Chain Reaction.
  American Journal of Clinical Pathology
• Yersinia kristensenii Subsp. rochesterensis Subsp. nov., Isolated from Human Feces.
  International Journal of Systematic and Evolutionary Microbiology
• First Line Androgen Deprivation Therapy vs. Chemotherapy for Patients with Androgen Receptor Positive Recurrent or Metastatic Salivary Gland Carcinoma-A Retrospective Study.
  Frontiers in Oncology

Samantha Rossi

Samantha Rossi is a Digital Marketing Manager at Mayo Clinic Laboratories. She supports marketing strategies for product management and specialty testing. Samantha has worked at Mayo Clinic since 2019.