Publications by authors named "Karen Law"

Standardized examinations measure progress throughout medical education. Successful completion of the American Board of Internal Medicine Certification Examination (ABIM-CE) benchmarks completion of internal medicine (IM) residency training. Recent declines in initial ABIM-CE pass rates may prompt residency programs to examine strategies to improve learner performance.

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The comorbidity of autism spectrum disorders and severe gastrointestinal symptoms is well-established, yet the molecular underpinnings remain unknown. The identification of high-confidence large-effect autism risk genes offers the opportunity to identify convergent, underlying biology by studying these genes in the context of the gastrointestinal system. Here we show that the expression of these genes is enriched in human prenatal gut neurons as well as their migratory progenitors, suggesting that the development and/or function of these neurons may be disrupted by autism-associated pathogenic variants, leading to gastrointestinal dysfunction.

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Article Synopsis
  • Colitis caused by checkpoint inhibitors (CPI) is common and typically treated with steroids, but its mechanisms in patients who have used steroids or do not respond to them are not well understood.
  • Researchers analyzed biopsies and blood samples from mainly steroid-experienced CPI colitis patients using advanced techniques to identify contributing immune cell populations.
  • The study found increased levels of specific T cells linked to the colitis, and highlighted unique features of CPI colitis metabolism and potential targets for treatment, suggesting CD4 memory T cells and certain endothelial cells could be key in managing this disease.
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The utility of traditional academic factors to predict residency candidates' performance is unclear. Many programs utilize holistic review processes assessing applicants on an expanded range of application and interview characteristics. Determining which characteristics might predict performance-related difficulty in residency is needed.

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Article Synopsis
  • Gene ontology analyses point to chromatin regulation and synaptic function as key factors in autism spectrum disorder (ASD) risk genetics.
  • Recent studies reveal that five chromatin regulators—ADNP, CHD8, CHD2, POGZ, and KMT5B—are linked to tubulin biology and are present in mitotic spindles during cell division.
  • Investigations into CHD2 mutations suggest they lead to problems like protein mislocalization, cell cycle issues, and cell death, highlighting the need for a deeper understanding of tubulin-related functions in ASD.
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Objectives: Although high-stakes interviews are critically important for residents to obtain competitive fellowships, few formalized programs targeting interviewing skills exist. Previous studies demonstrate that mock interviews increase medical students' and healthcare professionals' confidence and improve match rates, but little research has been conducted among medical residents. The objective of our study was to increase trainees' confidence entering fellowship interviews and prepare them for commonly encountered questions via a mock interview program.

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Purpose: To characterize the existence, accessibility, and content of parental leave policies, as well as barriers to program-level policy implementation among internal medicine (IM) program directors (PDs) and to assess the willingness of PDs to implement a national standardized policy.

Method: In 2019, the Association of Program Directors in Internal Medicine conducted a survey of 422 IM PDs. Along with other content, 38 questions addressed 4 primary outcomes: parental leave policy existence, accessibility, content, and barriers.

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Problem: Gender equity in leadership across academic medicine remains a concern. The case of chief resident (CR) offers an opportunity to explore novel strategies in leadership selection in graduate medical education (GME). Means of identifying potential candidates for CR often rely on faculty assessment of resident performance, yet implicit gender bias has the potential to influence this assessment.

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Purpose: To characterize how female residents make decisions about childbearing, factors associated with the decision to delay childbearing, and satisfaction with these decisions.

Method: In 2017, the authors sent a voluntary, anonymous survey to 1,537 female residents enrolled across 78 graduate medical education programs, consisting of 25 unique specialties, at 6 U.S.

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infection is a major public health threat in part due to the spread of antibiotic resistance and repeated failures to develop a protective vaccine. Infection is associated with production of virulence factors that include exotoxins that attack host barriers and cellular defenses, such as the leukocidin (Luk) family of bicomponent pore-forming toxins. To investigate the structural basis of antibody-mediated functional inactivation of Luk toxins, we generated a panel of murine monoclonal antibodies (MAbs) that neutralize host cell killing by the γ-hemolysin HlgCB.

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Takayasu arteritis (TA) is a systemic chronic inflammatory large-vessel vasculitis that affects the aorta, its major branches, and the pulmonary arteries. In this report, we describe a case of a young female with TA presenting with spontaneous subarachnoid hemorrhage (SAH), an unusual manifestation of the disease. Magnetic resonance angiography (MRA) of the head and neck demonstrates multifocal carotid and vertebral arterial stenoses, but no aneurysm or vascular malformation to account for SAH.

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Purpose Of Review: Increased recognition of risk factors and improved knowledge of sex-specific presentations has led to improved clinical outcomes for women with cardiovascular disease (CVD) compared to two decades ago. Yet, CVD remains the leading cause of death for women in the USA. Women have unique risk factors for CVD that continue to go under-recognized by their physicians.

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Purpose: To explore faculty perspectives on which characteristics of high-performing clerkship students are most important when determining an honors or top grade designation for clinical performance.

Method: In 2016-2017, the authors surveyed faculty (teaching ward attendings) for internal medicine clerkships and 1 pediatrics clerkship in inpatient settings at 5 U.S.

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Purpose: To characterize determinants of resident maternity leave and the effect of length of leave on maternal well-being.

Method: In 2017, the authors sent a voluntary, anonymous survey to female residents at 78 programs, in 25 unique specialties, at 6 institutions. Survey items included personal, partner, and child demographics, and logistics of leave, including whether leave was paid or vacation or sick leave was used.

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Objective: The Rheumatology Informatics System for Effectiveness (RISE) is a national electronic health record (EHR)-enabled registry. RISE passively collects data from EHRs of participating practices, provides advanced quality measurement and data analytic capacities, and fulfills national quality reporting requirements. Here we report the registry's architecture and initial data, and we demonstrate how RISE is being used to improve the quality of care.

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Complications of chronic hypoxia, including erythrocytosis, hyperviscosity, abnormalities of hemostasis, cerebral abscesses, stroke, and endocarditis, are among the most common consequences of cyanotic heart disease in adults. The compensatory erythrocytosis of cyanotic heart disease can become pathologic by causing an increase in blood viscosity, thereby decreasing perfusion and resulting in decreased total oxygen delivery and increased risk of venoocclusive/hyperviscosity syndrome. Treatment of hyperviscosity secondary to erythrocytosis in cyanotic heart disease is controversial.

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This report describes the development of novel sonochemically fabricated, bioengineered acetylcholinesterase and polyaniline carbon/cobalt phthalocyanine biosensors for the ultra-sensitive determination of a number of different pesticides. Arrays of this type typically have population micro-electrode densities of up to approximately 2 x 10(5) cm(-2); these represent the highest micro-electrode population densities reported to date by any fabrication means. The enzymatic response of the sensors is inhibited upon incubation with the pesticide, and we have shown that Dichlorvos, Parathion and Azinphos may be determined down to concentrations of approximately 1 x 10(-17) M, approximately 1 x 10(-16) M and approximately 1 x 10(-16) M, respectively.

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This paper describes the development of a novel sonochemically fabricated microelectrode based acetylcholinesterase and polyaniline carbon/cobalt phthalocyanine biosensor for the ultra-sensitive determination of pesticides. Arrays of this type are fabricated using microelectrode templates with population densities of 2 x 10(5) cm(-2). The enzymatic response of the sensors is inhibited upon incubation with the pesticide and in this report it is shown that paraoxon may be determined down to concentrations of 1 x 10(-17) M.

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A novel and patented procedure is described for the sonochemical fabrication of a new class of microelectrode array based sensor with electrode element populations of up to 2 x 10(5) cm(-2). For some years it has been accepted that microelectrode arrays offer an attractive route for lowering minimum limits of detection and imparting stir (convectional mass transport) independence to sensor responses; despite this no commercial biosensors, to date, have employed microelectrode arrays, largely due to the cost of conventional fabrication routes that have not proved commercially viable for disposable devices. Biosensors formed by our sonochemical approach offer unrivalled sensitivity and impart stir independence to sensor responses.

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Objective: This was a prospective study of the effects of maternal smoking during pregnancy on newborn neurobehavior, including dose-response relationships using self-report and a bioassay of nicotine exposure.

Methods: The sample included 27 nicotine exposed and 29 unexposed full-term newborn infants with no medical problems from comparable social class backgrounds. Mothers were excluded for using illegal drugs during pregnancy, using antidepressant medication, or if they consumed >3 alcoholic drinks per month.

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This paper describes the development of a novel optically interrogated enzyme electrode with generic applicability for NAD(P) dependent enzymes. The example reported here employs a multi-enzyme pathway comprising the enzymes pyruvate kinase, hexokinase, glucose-6-phosphate dehydrogenase and diaphorase. The final substrate of this pathway, dichlorophenol indophenol (DCPIP), was immobilised within an ultra-thin polymer film of o-phenylenediamine, itself electrochemically polymerised onto a conductive gold coating on the surface of a support polyethylene sheet.

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