Superior orbital fissure narrowing and tumor-associated pain in spheno-orbital meningiomas.

Introduction: Spheno-orbital meningiomas (SOMs) represent a distinct subtype of meningioma characterized by their unique multi-compartmental invasion pattern. Previous studies have investigated correlations between SOMs and visual manifestations. However, our comprehension of pain associated with SOMs remains limited.

Thalamo-Prefrontal Connectivity Correlates With Early Command-Following After Severe Traumatic Brain Injury.

Recovery of consciousness after traumatic brain injury (TBI) is heterogeneous and difficult to predict. Structures such as the thalamus and prefrontal cortex are thought to be important in facilitating consciousness. We sought to investigate whether the integrity of thalamo-prefrontal circuits, assessed diffusion tensor imaging (DTI), was associated with the return of goal-directed behavior after severe TBI.

Clinical and radiographic characteristics of diffuse astrocytic glioma, IDH-wildtype, with molecular features of glioblastoma: a single institution review.

Purpose: Genetic analyses of gliomas have identified key molecular features that impact treatment paradigms beyond conventional histomorphology. Despite at-times lower grade histopathologic appearances, IDH-wildtype infiltrating gliomas expressing certain molecular markers behave like higher-grade tumors. For IDH-wildtype infiltrating gliomas lacking traditional features of glioblastoma, these markers form the basis for the novel diagnosis of diffuse astrocytic glioma, IDH-wildtype (wt), with molecular features of glioblastoma (GBM), WHO grade-IV (DAG-G).

Injury to thalamocortical projections following traumatic brain injury results in attractor dynamics for cortical networks.

Major theories of consciousness predict that complex electroencephalographic (EEG) activity is required for consciousness, yet it is not clear how such activity arises in the corticothalamic system. The thalamus is well-known to control cortical excitability via interlaminar projections, but whether thalamic input is needed for complexity is not known. We hypothesized that the thalamus facilitates complex activity by adjusting synaptic connectivity, thereby increasing the availability of different configurations of cortical neurons (cortical "states"), as well as the probability of state transitions.

Agitation Following Severe Traumatic Brain Injury Is a Clinical Sign of Recovery of Consciousness.

Severe traumatic brain injury (sTBI) often results in disorders of consciousness. Patients emerging from coma frequently exhibit aberrant behaviors such as agitation. These non-purposeful combative behaviors can interfere with medical care.

Impact of serological and PCR testing requirements on the selection of COVID-19 convalescent plasma donors.

Background: Convalescent plasma is undergoing randomized trials as a potential therapeutic option for COVID-19 infection. Little empirical evidence exists regarding the determination of donor eligibility and experiences with donor selection.

Study Design And Methods: This prospective study was conducted at a tertiary care hospital in New York to select plasma donors for a randomized, double-blind, controlled convalescent plasma trial.

Colloid cyst curtailed: A case report of spontaneous colloid cyst regression.

Background: Colloid cysts arise from the roof of the third ventricle and are at risk for obstructing the flow of cerebrospinal fluid (CSF) and causing increased intracranial pressure. With advancements and increased frequency of imaging, colloid cysts are sometimes discovered incidentally. In these cases, the neurosurgeon is faced with the decision of whether to intervene or manage conservatively.

JAK2V617F-positive endothelial cells contribute to clotting abnormalities in myeloproliferative neoplasms.

The Janus kinase 2 (JAK2) V617F mutation is the primary pathogenic mutation in patients with Philadelphia chromosome-negative myeloproliferative neoplasms (MPNs). Although thrombohemorrhagic incidents are the most common causes of morbidity and mortality in patients with MPNs, the events causing these clotting abnormalities remain unclear. To identify the cells responsible for the dysfunctional hemostasis, we used transgenic mice expressing JAK2V617F in specific lineages involved in thrombosis and hemostasis.

A novel activating, germline JAK2 mutation, JAK2R564Q, causes familial essential thrombocytosis.

Along with the most common mutation, JAK2V617F, several other acquired JAK2 mutations have now been shown to contribute to the pathogenesis of myeloproliferative neoplasms (MPNs). However, here we describe for the first time a germline mutation that leads to familial thrombocytosis that involves a residue other than Val617. The novel mutation JAK2R564Q, identified in a family with autosomal dominant essential thrombocythemia, increased cell growth resulting from suppression of apoptosis in Ba/F3-MPL cells.