Publications by authors named "Madden N"

Background/objective: Fanconi-Bickel Syndrome (FBS) is an inherited disorder of glucose metabolism resulting from functional loss of glucose transporter 2 characterized by fasting hypoglycemia oscillating with postprandial hyperglycemia. Dysglycemia treatment strategies during FBS pregnancy have not been reported, and insulin therapy carries significant risk due to fasting hypoglycemia in FBS. We report for the first time: (1) glycemic profiles obtained via continuous glucose monitoring (CGM), (2) CGM-guided strategies for cornstarch and nutritional therapy for fasting hypoglycemia and postprandial hyperglycemia, respectively, and (3) placental glucose transporter 2 isoform expression in a pregnant individual with FBS.

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Objective: To evaluate the association between area poverty and adverse birth outcomes in the diverse birthing population of a large health system.

Methods: This was a retrospective cohort study using electronic health record and hospital administrative data for pregnant people at nine hospitals within a large health system in the Chicago metropolitan area from 2018 to 2023. Patient addresses were geocoded and categorized by Census tract area percent poor households.

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Background: Digital adherence technologies (DATs) with associated differentiated care are potential tools to improve tuberculosis (TB) treatment outcomes and reduce associated costs for both patients and healthcare providers. However, the balance between epidemiological and economic benefits remains unclear. Here, we used data from the ASCENT trial to estimate the potential long-term epidemiological and economic impact of DAT interventions in Ethiopia.

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Article Synopsis
  • Pregnant individuals with high triglyceride levels are at risk for severe complications, but there's a lack of guidelines for managing these cases during pregnancy.
  • A case study highlights a woman with familial hypertriglyceridemia who stopped her triglyceride-reducing medications and developed acute pancreatitis while pregnant, leading to a complicated delivery.
  • Severe hypertriglyceridemia in pregnancy, though rare, can pose serious risks to both the mother and baby, emphasizing the need for careful management and shared decision-making about treatment options.
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The June 24, 2022 US Supreme Court decision in resulted in an expansive restriction on abortion access that had been constitutionally guaranteed for nearly half a century. Currently, 14 states have implemented complete bans on abortion with very limited exceptions, and an additional 7 states have implemented abortion bans at 6 to 18 weeks' gestation. It has been well demonstrated that restrictive policies disproportionately limit abortion access for minoritized people and people of low socioeconomic status; the financial and geographic barriers of these post- restrictions will only exacerbate this disparity.

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The mechanisms underlying the selective regional vulnerability to neurodegeneration in Huntington's disease (HD) have not been fully defined. To explore the role of astrocytes in this phenomenon, we used single-nucleus and bulk RNAseq, lipidomics, HTT gene CAG repeat-length measurements, and multiplexed immunofluorescence on HD and control post-mortem brains. We identified genes that correlated with CAG repeat length, which were enriched in astrocyte genes, and lipidomic signatures that implicated poly-unsaturated fatty acids in sensitizing neurons to cell death.

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Over the last 4 decades, significant advances in the care of HIV during pregnancy have successfully reduced, and nearly eliminated, the risk of perinatal HIV transmission. The baseline risk of transmission without intervention (25% to 30%) is now <1% to 2% in the United States with contemporary antepartum, intrapartum, and postnatal interventions. In this review, we discuss 3 landmark clinical trials that substantially altered obstetric practice for pregnant individuals with HIV and contributed to this extraordinary achievement: 1) the Pediatric AIDS Clinical Trials Group 076 Trial determined that antepartum and intrapartum administration of antiretroviral drug zidovudine to the pregnant individual, and postnatally to the newborn, could reduce the risk of perinatal transmission by approximately two-thirds; 2) the European Mode of Delivery Collaboration Trial demonstrated performance of a prelabor cesarean birth before rupture of membranes among pregnant people with viremia reduced the risk of perinatal transmission compared with vaginal birth; and 3) the International Maternal Pediatric Adolescent AIDS Clinical Trials Network 2010 Trial identified that dolutegravir-containing, compared with efavirenz-containing, antiretroviral regimens during pregnancy achieved a significantly higher rate of viral suppression at delivery with shorter time to viral suppression, with fewer adverse pregnancy outcomes.

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 Non-Hispanic black and Hispanic women experience significantly higher adverse maternal and neonatal outcomes compared with non-Hispanic white women. The purpose of this study is to explore whether disparities in obstetric outcomes exist by race among women who are college-educated.  This is a retrospective cohort study from a multicenter observational cohort of women undergoing cesarean delivery.

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Eastern box turtles () face a variety of anthropogenic, infectious, and environmental threats and have been affected by high morbidity and mortality disease events. Wellness parameters in free-ranging eastern box turtles with a high prevalence of myiasis on Cape Cod, MA, were documented to identify epidemiologic trends or associations with several health parameters. There were 109 samples collected from 59 individual box turtles over the course of 4 mon.

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In the mammalian isocortex, CD44, a cell surface receptor for extracellular matrix molecules, is present in pial-based and fibrous astrocytes of white matter but not in protoplasmic astrocytes. In the hominid isocortex, CD44+ astrocytes comprise the subpial "interlaminar" astrocytes, sending long processes into the cortex. The hippocampus also contains similar astrocytes.

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Objective: Describe families' experiences of interventions to improve continence in children and young people with neurodisability, and health professionals' and school and social care staff's perspectives regarding factors affecting intervention use.

Design: Four online surveys were developed and advertised to parent carers, young people with neurodisability, health professionals and school and social care staff, via societies, charities, professional contacts, schools, local authorities, and national parent carer and family forums, who shared invitations with their networks. Survey questions explored: difficulties helping children and young people use interventions; acceptability of interventions and waiting times; ease of use and availability of interventions, and facilitators and barriers to improving continence.

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Huntington disease (HD) is an incurable neurodegenerative disease characterized by neuronal loss and astrogliosis. One hallmark of HD is the selective neuronal vulnerability of striatal medium spiny neurons. To date, the underlying mechanisms of this selective vulnerability have not been fully defined.

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The pathological involvement of the central nervous system in SARS-CoV2 (COVID-19) patients is established. The burden of pathology is most pronounced in the brain stem including the medulla oblongata. Hypoxic/ischemic damage is the most frequent neuropathologic abnormality.

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Background/objectives: Radiotherapy is an effective palliative treatment in advanced cancer. Shorter palliative treatment courses are recommended for adults, though pediatric data addressing treatment efficacy and toxicity according to radiation therapy (RT) dose and fractionation are limited.

Design/methods: Total 213 patients aged 21 years or younger receiving 422 palliative radiotherapy treatment courses from 2003 to 2016 were included.

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Classical galactosemia (CG) is a disorder of galactose metabolism which results from deficiency of the enzyme galactose-1-phosphate uridylyl transferase (GALT). Treatment consists of immediately eliminating galactose from the diet in the new-born and lifelong restriction of dietary galactose. The inclusion of a wider variety of foods for people with CG may provide many benefits, including improved nutritional adequacy and quality of life.

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Purpose: To utilize a particle engineering strategy to improve the manufacturability of a cohesive and poorly compactable API at high drug loading for direct compression of mini-tablets.

Methods: A high-shear mixer was used for wet milling during the API manufacturing process to obtain target particle size distributions. The targeted particles were characterized and formulated into blends by mixing with excipients.

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Background: Children and young people with neurodisability often need help to achieve socially acceptable bladder and bowel control. Approaches vary depending on whether or not the impairment results from spinal cord pathology that impairs motor control and sensation of the bladder and bowel. Currently, there is uncertainty about which interventions are effective.

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Completion imaging following carotid endarterectomy (CEA) remains controversial. We present our experience performing routine completion arteriography (CA). A retrospective review of our prospectively maintained institutional database was performed for patients undergoing isolated CEA.

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Importance: Uncorrected refractive error in school-aged children may affect learning.

Objective: To assess the effect of a school-based vision program on academic achievement among students in grades 3 to 7.

Design, Setting, And Participants: This cluster randomized clinical trial was conducted in Baltimore City Public Schools during school years from 2016 to 2019 among 2304 students in grades 3 to 7 who received eye examinations and eyeglasses.

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Objectives: Pancreaticoduodenal artery aneurysms (PDAAs) are rare and have a high propensity for rupture. Historically, management of PDAAs included surgical reconstruction but has evolved with advances in endovascular therapy. We report our experience with management of PDAAs during the last 30 years.

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Objective: Several studies have evaluated the differences in duration of latency and clinical outcomes between singleton and twin pregnancies after preterm premature rupture of membranes (PPROM); however, these data are limited to single-institution analyses and based on small sample sizes. The aim of this study was to assess differences in latency and clinical outcomes in singletons versus twin gestations affected by PPROM in a large, diverse cohort of women.

Study Design: This is a secondary analysis of a multicenter trial of magnesium for neuroprotection in women at high risk of preterm birth.

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Objective: The Society for Vascular Surgery stated there are a lack of studies describing long-term surveillance for aortobifemoral (AoBF) bypasses. Our goal was to investigate the value of DU studies as a surveillance tool for AoBF bypasses.

Methods: We retrospectively identified patients in our prospectively maintained database who underwent AoBF bypasses between 1995-2018.

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Objective: There are unmet needs for refractive correction in the pediatric population, especially in high-poverty communities. We reported the impact of refractive correction on vision outcomes over a 2-year follow-up in the Baltimore Reading and Eye Disease Study.

Design: Prospective, school-based cohort study.

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Objective: We describe the Baltimore Reading and Eye Disease Study, report baseline ocular findings, and explore the feasibility of eye examinations in the school setting.

Design: Prospective, school-based cohort study.

Participants: Students in second and third grades.

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