The tracheal terminal cell as a model for branching morphogenesis.

The terminal cells of the larval tracheal system are perhaps the simplest delivery networks, providing an analogue for mammalian vascular growth and function in a system with many fewer components. These cells are a prime example of single-cell morphogenesis, branching significantly over time to adapt to the needs of the growing tissue they supply. While the genetic mechanisms governing local branching decisions have been studied extensively, an understanding of the emergence of a global network architecture is still lacking.

Antithrombotic Treatment for Stroke Prevention in Cervical Artery Dissection: The STOP-CAD Study.

Background: Small, randomized trials of patients with cervical artery dissection showed conflicting results regarding optimal stroke prevention strategies. We aimed to compare outcomes in patients with cervical artery dissection treated with antiplatelets versus anticoagulation.

Methods: This is a multicenter observational retrospective international study (16 countries, 63 sites) that included patients with cervical artery dissection without major trauma.

Delayed Diagnosis in Cerebral Venous Thrombosis: Associated Factors and Clinical Outcomes.

Background Identifying factors associated with delayed diagnosis of cerebral venous thrombosis (CVT) can inform future strategies for early detection. Methods and Results We conducted a retrospective cohort study including all participants from ACTION-CVT (Anticoagulation in the Treatment of Cerebral Venous Thrombosis) study who had dates of neurologic symptom onset and CVT diagnosis available. Delayed diagnosis was defined as CVT diagnosis occurring in the fourth (final) quartile of days from symptom onset.

Timing and Predictors of Recanalization After Anticoagulation in Cerebral Venous Thrombosis.

Background And Purpose: Vessel recanalization after cerebral venous thrombosis (CVT) is associated with favorable outcomes and lower mortality. Several studies examined the timing and predictors of recanalization after CVT with mixed results. We aimed to investigate predictors and timing of recanalization after CVT.

Stochastic phenotypes in RAS-dependent developmental diseases.

Germline mutations upregulating RAS signaling are associated with multiple developmental disorders. A hallmark of these conditions is that the same mutation may present vastly different phenotypes in different individuals, even in monozygotic twins. Here, we demonstrate how the origins of such largely unexplained phenotypic variations may be dissected using highly controlled studies in Drosophila that have been gene edited to carry activating variants of MEK, a core enzyme in the RAS pathway.

Outcome Prediction in Cerebral Venous Thrombosis: The IN-REvASC Score.

Background: We identified risk factors, derived and validated a prognostic score for poor neurological outcome and death for use in cerebral venous thrombosis (CVT).

Methods: We performed an international multicenter retrospective study including consecutive patients with CVT from January 2015 to December 2020. Demographic, clinical, and radiographic characteristics were collected.

Predictors of Recurrent Venous Thrombosis After Cerebral Venous Thrombosis: Analysis of the ACTION-CVT Study.

Background And Objective: Cerebral venous thrombosis (CVT) is a rare cause of stroke carrying a nearly 4% risk of recurrence after 1 year. There are limited data on predictors of recurrent venous thrombosis in patients with CVT. In this study, we aim to identify those predictors.

Trends in outpatient rehabilitation use for stroke survivors.

Background: Stroke survivors with residual disabling deficits who are medically stable may be recommended for acute rehabilitation or outpatient therapy, depending partly on the severity of their deficits. Here we sought to determine if the location at which patients needing rehabilitation post-stroke has shifted from inpatient to an outpatient setting.

Methods: For analysis, we used our Institutional Review Board-approved Get With The Guidelines®-Stroke Database to study stroke survivors discharged to receive either inpatient or outpatient rehabilitation services between 2014 and 2019.

Estimating Perfusion Deficits in Acute Stroke Patients Without Perfusion Imaging.

Background: Perfusion weighted imaging (PWI) is critical for determining whether stroke patients presenting in an extended time window are candidates for mechanical thrombectomy. However, PWI is not always available. Fluid-attenuated inversion recovery hyperintense vessels (FHVs) are seen in patients with a PWI lesion.

The Importance of Incorporating Stroke Survivors' Health Perceptions in Addressing Health Care Disparities.

Patient-centered research in determining health care disparities among stroke patients is limited. Several studies have examined patient perceptions in stroke survivors and have utilized the Illness Perceptions Questionnaire-Revised (IPQ-R) and Brief Illness Perceptions Questionnaire (BIPQ), which are validated measures of illness beliefs. Yet, there are several domains these surveys could assess that warrant more investigation, including: perception of medication side effects; acceptance of the stroke diagnosis; consequence and long-term impact of symptoms; the importance of medications in long-term health maintenance; and perception of ease of access to equitable health care.

Apparent Treatment-Resistant Hypertension Among Stroke Survivors: A Transcontinental Study Assessing Impact of Race and Geography.

Background: Race and geographic differences in the prevalence and predictors of hypertension in stroke survivors have been reported, but apparent treatment-resistant hypertension (aTRH) among stroke survivors by race (African ancestry vs. non-Hispanic Caucasians) and by geography (continental Africa vs. the United States) are under studied.

Direct Oral Anticoagulants Versus Warfarin in the Treatment of Cerebral Venous Thrombosis (ACTION-CVT): A Multicenter International Study.

Background: A small randomized controlled trial suggested that dabigatran may be as effective as warfarin in the treatment of cerebral venous thrombosis (CVT). We aimed to compare direct oral anticoagulants (DOACs) to warfarin in a real-world CVT cohort.

Methods: This multicenter international retrospective study (United States, Europe, New Zealand) included consecutive patients with CVT treated with oral anticoagulation from January 2015 to December 2020.