Alignment of a Trivalent Chromosome on the Metaphase Plate Is Associated with Differences in Microtubule Density at Each Kinetochore.

Chromosome alignment on the metaphase plate is a conserved phenomenon and is an essential function for correct chromosome segregation for many organisms. Organisms with naturally-occurring trivalent chromosomes provide a useful system for understanding how chromosome alignment is evolutionarily regulated, as they align on the spindle with one kinetochore facing one pole and two facing the opposite pole. We studied chromosome alignment in a praying mantid that has not been previously studied chromosomally, the giant shield mantis .

Do patients' and referral centers' characteristics influence multiple sclerosis phenotypes? Results from the Italian multiple sclerosis and related disorders register.

Background: Multiple sclerosis (MS) is characterized by phenotypical heterogeneity, partly resulting from demographic and environmental risk factors. Socio-economic factors and the characteristics of local MS facilities might also play a part.

Methods: This study included patients with a confirmed MS diagnosis enrolled in the Italian MS and Related Disorders Register in 2000-2021.

Breakthrough SARS-CoV-2 infections after COVID-19 mRNA vaccination in MS patients on disease modifying therapies during the Delta and the Omicron waves in Italy.

Background: In this study we aimed to monitor the risk of breakthrough SARS-CoV-2 infection in patients with MS (pwMS) under different DMTs and to identify correlates of reduced protection.

Methods: This is a prospective Italian multicenter cohort study, long-term clinical follow-up of the CovaXiMS (Covid-19 vaccine in Multiple Sclerosis) study. 1855 pwMS scheduled for SARS-CoV-2 mRNA vaccination were enrolled and followed up to a mean time of 10 months.

Methodology for Single Bee and Bee Brain H-NMR Metabolomics.

The feasibility of metabolomic H NMR spectroscopy is demonstrated for its potential to help unravel the complex factors that are impacting honeybee health and behavior. Targeted and non-targeted H NMR metabolic profiles of liquid and tissue samples of organisms could provide information on the pathology of infections and on environmentally induced stresses. This work reports on establishing extraction methods for NMR metabolic characterization of , the European honeybee, describes the currently assignable aqueous metabolome, and gives examples of diverse samples (brain, head, body, whole bee) and biologically meaningful metabolic variation (drone, forager, day old, deformed wing virus).

Transcriptomic Responses of the Honey Bee Brain to Infection with Deformed Wing Virus.

Managed colonies of European honey bees () are under threat from mite infestation and infection with viruses vectored by mites. In particular, deformed wing virus (DWV) is a common viral pathogen infecting honey bees worldwide that has been shown to induce behavioral changes including precocious foraging and reduced associative learning. We investigated how DWV infection of bees affects the transcriptomic response of the brain.