Publications by authors named "Sarah L Stewart"

Article Synopsis
  • * The study focused on understanding the structure and function of the NVU in mouse retina using advanced imaging technology, specifically serial block-face scanning electron microscopy (SBF-SEM), to create a 3D model of retinal capillaries.
  • * Findings revealed that pericytes provide extensive coverage around capillaries, interweaving with the basement membrane, and that specific structures in the membrane facilitate interactions with other cellular components in the NVU.
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Pyridoxine (vitamin B6) toxicity is known to cause a length-dependent, sensory predominant axonal polyneuropathy. There is debate regarding the threshold at which intake levels can cause neurological symptoms through pyridoxine toxicity. We asked if elevated plasma vitamin B6 levels were related to outcome measures in a well-characterized cohort of patients with chronic idiopathic axonal polyneuropathy (CIAP).

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Nociceptin and its receptor are widely distributed throughout the brain in regions associated with reward behavior, yet how and when they act is unknown. Here, we dissected the role of a nociceptin peptide circuit in reward seeking. We generated a prepronociceptin (Pnoc)-Cre mouse line that revealed a unique subpopulation of paranigral ventral tegmental area (pnVTA) neurons enriched in prepronociceptin.

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Interagency collaboration in domestic and family violence (DFV) work is generally assumed to be good practice. This article questions this assumption, suggesting caution in adopting an uncritical pro-collaboration stance, arguing the need to trace the effects of working together on victims/survivors. Employing an innovative sociomaterial approach, this ethnographic study of interagency practice unravels its complexity, showing that not all ways of working together serve the interests of victims/survivors equally.

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Objective: To assess subsequent utilization of fertility treatment in reproductive-age women with cervical cancer (CC) who underwent ovarian transposition (OT) to preserve fertility prior to pelvic radiation.

Study Design: This is a case series of 216 CC patients seen in a comprehensive cancer center. Sixteen patients underwent OT for fertility preservation prior to pelvic radiation.

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Background: Airway hyperresponsiveness (AHR) to indirect agents like mannitol is thought to be dependent on concurrent airway inflammation as these stimuli exert their effects via the release of bronchoconstricting mediators from inflammatory cells. Airway inflammation correlates negatively with deep inhalation bronchoprotection against direct stimuli like methacholine. We hypothesised that deep inhalation bronchoprotection to methacholine would be absent and airway inflammation would be present in individuals with AHR to inhaled mannitol.

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Article Synopsis
  • The human pituitary tumor transforming gene (hPTTG) is a proto-oncogene linked to tumor growth, regulated by cyclin-dependent kinase 2 (CDC2) and specificity protein 1 (SP1).
  • *In thyroid cells, growth factors like EGF, TGFα, and IGF-1 boost hPTTG expression and phosphorylation, activating key signaling pathways independently of CDC2 and SP1.
  • *Transgenic and knockout mouse models showed that hPTTG influences thyroid cell growth and signaling, suggesting its significant role in promoting cell transformation and growth through autocrine mechanisms.
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Background: Regular use of inhaled β-agonist leads to tolerance to its bronchoprotective effect. This occurs within 12 hours with salmeterol and has been documented at 1 week for salbutamol. The course of onset after introduction of salbutamol has not been investigated.

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Background: The cause of the high HIV prevalence in sub-Saharan Africa is incompletely understood, with heterosexual penile-vaginal transmission proposed as the main mechanism. Heterosexual HIV transmission has been estimated to have a very low probability; but effects of cofactors that vary in space and time may substantially alter this pattern.

Methods: To test the effect of individual variation in the HIV infectiousness generated by co-infection, we developed and analyzed a mathematical sexual network model that simulates the behavioral components of a population from Malawi, as well as the dynamics of HIV and the co-infection effect caused by other infectious diseases, including herpes simplex virus type-2, gonorrhea, syphilis and malaria.

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Objective: To provide data from a US center on laparoscopic (LSC) approach to sentinel lymph node (SLN) detection in cervix cancer with detailed time analysis.

Methods: This prospective trial enrolled patients with stage IA2-IIA cervix cancer undergoing primary radical surgery. Tc-99 radiocolloid was injected the morning of surgery, followed by hybrid SPECT/CT lymphoscintigraphy.

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Objective: Results of the ICON4/AGO-OVAR-2.2 trial suggest that a platinum/taxane combination provides a survival benefit in relapsed, platinum-sensitive ovarian cancer compared to platinum alone. The optimal specific combination has yet to be determined.

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Objective: The aim of the current study was to evaluate the safety and efficacy of a widely available bupivacaine continuous wound infusion system in gynecologic oncology patients undergoing laparotomy.

Methods: A prospective, randomized, double-blind, placebo-controlled trial was performed. After closure of the fascia, flexible soaker catheters were placed in the deep subcutaneous space.

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