Publications by authors named "Melinda Chen"

Transient neonatal diabetes mellitus (TNDM) due to 6q duplication usually presents in the first 4 months of life, resolves before 18 months of life, and recurs in adolescence or adulthood. Insulin is the first-line treatment for chromosome 6-related neonatal diabetes in infancy. While there is no ideal treatment for patients with relapsed TNDM, residual β-cell function after remission of neonatal diabetes indicates a potential role for insulin secretagogues.

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Type 1 Diabetes (T1D) is life-threatening without appropriate treatment. Though pediatric endocrinology care is limited in Rwanda, a decentralized health system allows access to local non-communicable disease (NCD) nurses through a network of 42 district hospitals. Recent rapid expansion of internet access in the country makes virtual diabetes education initiatives possible.

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Purpose: In efforts to improve patient care, collaborative approaches to care have been highlighted. The teamlet model is one such approach, in which a primary care clinician works consistently with the same clinical staff member. The purpose of this study is to identify the characteristics of high-performing primary care teamlets, defined as teamlets with low rates of ambulatory care sensitive emergency department (ACSED) visits and ambulatory care sensitive hospital admissions (ACSAs).

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An 8-year, 7-month-old male presented with puberty symptoms, including a 1.5-year history of facial hair with 9 months of phallic growth, body odor, and acne. Physical examination revealed phallic enlargement but only 4 mL testes bilaterally.

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Antirape scholarship has largely focused on survivors and their needs. However, little is known about victim advocates, who support survivors, and how advocates' identities can affect their work. This article draws on semistructured interviews with 23 LGBTQ+ advocates to explore how they navigate their sexual, gender, and racial identities at rape crisis centers today.

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Article Synopsis
  • Most general internists and family physicians work in "teamlets," which are small, consistent groups of staff and physicians designed to enhance care delivery.
  • A majority (77.4%) of the surveyed physicians are involved in teamlets, with only 36.7% working in larger teams; those practicing without either experienced lower burnout rates.
  • The study found no significant differences in patient outcomes or Medicare spending based on the type of team involvement, suggesting that while teamlets are common, their effectiveness in improving healthcare metrics may not be clear-cut.
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Renal volume has the potential to serve as a robust biomarker for tracking the onset and progression of renal diseases and also for quantifying renal function. We propose a method to estimate renal volumes using freehand ultrasound scans at the point of care. A conventional ultrasound probe was augmented with an Intel RealSense D435 i camera.

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Aims: The Disposition Index (DI) is widely used in clinical studies of β-cell function. However, direct physiologic interpretation of the DI value and the inverse exponential slope relating insulin secretion and insulin sensitivity terms is difficult. We evaluated a linearization of the relationship that allows separate evaluation of the DI term and the slope.

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This paper introduces a non-invasive, contrastenhanced ultrasound (CEUS) infusion method to quantify the health of viable donor livers. The method uses the infusion of microbubbles and their destruction and subsequent replenishment to measure the perfusion rate in the liver microvasculature. The proposed method improves on the previous parameter extraction approaches applied to the flashreplenishment technique by addressing the effects of the microbubble mixing within the perfusate bath and destruction rate.

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Background Limited information is available regarding baseline characteristics of children and adolescents with gender dysphoria (GD). The purpose of this retrospective study was to describe baseline characteristics of pediatric patients referred for GD. Methods A retrospective chart review of pediatric patients with GD referred to the pediatric endocrine clinic between 2002 and 2017 was conducted.

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Purpose Of Review: The oral glucose tolerance test (OGTT) is used both in clinical practice and research to assess glucose tolerance. In addition, the OGTT is utilized for surrogate measures of insulin sensitivity and the insulin response to enteral glucose and has been widely applied in the evaluation of β-cell dysfunction in obesity, prediabetes, and type 2 diabetes. Here we review the use of the OGTT and the OGTT-derived indices for measurement of risk markers for type 2 diabetes in youth.

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Objective: Type 2 diabetes is a growing health problem among both adults and adolescents. To better understand the differences in the pathogenesis of diabetes between these groups, we examined differences in β-cell function along the spectrum of glucose tolerance.

Research Design And Methods: We evaluated 89 adults and 50 adolescents with normal glucose tolerance (NGT), dysglycemia, or type 2 diabetes.

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Background: We aimed to determine the extent of post-treatment weight gain that occurs in pediatric patients in the first year following radioactive iodine (RAI) therapy for Graves disease (GD) and its relationship to clinical characteristics.

Methods: A retrospective chart review of patients receiving RAI therapy for GD between 1998-2015 was performed. Change in BMI SDS (∆BMI SDS) from baseline to one year after treatment was determined.

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Purpose: Our Pediatric Endocrinology Clinic has seen a sharp increase in referrals for gender dysphoria (GD) during recent years. However, the frequency and characteristics of referrals have not been objectively examined.

Methods: A retrospective chart review of referrals for GD during the past 13 years was performed.

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Objectives: To determine whether a shared panel management program was effective at improving quality of care for patients with uncontrolled chronic disease.

Data Sources: Data were extracted from electronic health records.

Study Design: Randomized controlled trial of a panel management program initiated by New York City Department of Health and Mental Hygiene.

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Purpose: In the turbulent US health care environment, many primary care physicians seek hospital employment. Large physician-owned primary care groups are an alternative, but few physicians or policy makers realize that such groups exist. We wanted to describe these groups, their advantages, and their challenges.

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Central precocious puberty (CPP) is characterized by the same biochemical and physical features as normally timed puberty but occurs at an abnormally early age. Most cases of CPP are seen in girls, in whom it is usually idiopathic. In contrast, ~50% of boys with CPP have an identifiable cause.

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AMP-activated protein kinase (AMPK), whose activity is a critical determinant of cell health, serves a fundamental role in integrating extracellular and intracellular nutrient information into signals that regulate various metabolic processes. Despite the importance of AMPK, its specific roles within the different intracellular spaces remain unresolved, largely due to the lack of real-time, organelle-specific AMPK activity probes. Here, we present a series of molecular tools that allows for the measurement of AMPK activity at the different subcellular localizations and that allows for the rapid induction of AMPK inhibition.

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Using a newly synthesized gibberellin analog containing an acetoxymethyl group (GA(3)-AM) and its binding proteins, we developed an efficient chemically inducible dimerization (CID) system that is completely orthogonal to existing rapamycin-mediated protein dimerization. Combining the two systems should allow applications that have been difficult or impossible with only one CID system. By using both chemical inputs (rapamycin and GA(3)-AM), we designed and synthesized Boolean logic gates in living mammalian cells.

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Background: Patient care provided by primary care physicians outside of office visits is important for care coordination and may serve as a substitute for office visits.

Objectives: To describe primary care physicians' ambulatory patient care activities outside of office visits ("AOVs") and their perceptions of the extent to which AOVs substitute for visits and may be performed by support staff.

Design: Cross-sectional direct observational study.

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In infants and children, elevated whole blood zinc protoporphyrin/heme (ZnPP/H) measures iron-deficient (ID) erythropoiesis. Because immature erythrocytes are less dense than mature erythrocytes, we hypothesized that the sensitivity of ZnPP/H is improved if measured in the least dense cells. Blood was collected from control suckling, mildly and severely ID suckling rats.

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