Publications by authors named "L M Shaffer"

Objective: To evaluate whether the use of a labor mirror during the active pushing phase of the second stage of labor is associated with a shorter duration of pushing. Additionally, we examined maternal and neonatal outcomes secondary to mirror use versus non-mirror use.

Design: Retrospective observational cohort study.

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In the monosomy 1p36 deletion syndrome, the role of DNA methylation in the genomic stability of the 1p36 region remains elusive. We hypothesize that changes in the methylation pattern at the 1p36 breakpoint hotspot region influenced the chromosomal breakage leading to terminal deletions. From the monosomy 1p36 material collection, four cases with 4.

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Objectives: To examine disparities in mental health diagnosis, depression screening, and depressive symptoms in pediatric primary care settings before and during the COVID-19 pandemic, and to evaluate the use of electronic health records to study temporal trends in pediatric mental and behavioral health (MBH).

Methods: This is an IRB-approved, retrospective study of pediatric patients (n=10,866) who visited three primary care sites at an academic medical center before (2017-2019) and during (2020-2022) the COVID-19 pandemic. We used logistic regression to compare rates of diagnoses, depression screening, and depression symptom scores among demographic groups.

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One of the primary complications in generating physiologically representative skin tissue is the inability to integrate vasculature into the system, which has been shown to promote the proliferation of basal keratinocytes and consequent keratinocyte differentiation, and is necessary for mimicking representative barrier function in the skin and physiological transport properties. We created a 3D vascularized human skin equivalent (VHSE) with a dermal and epidermal layer, and compared keratinocyte differentiation (immunomarker staining), epidermal thickness (H&E staining), and barrier function (transepithelial electrical resistance (TEER) and dextran permeability) to a static, organotypic avascular HSE (AHSE). The VHSE had a significantly thicker epidermal layer and increased resistance, both an indication of increased barrier function, compared to the AHSE.

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Background: Levels of sulfated Dehydroepiandrosterone (DHEA-S) are unknown in people with Cystic Fibrosis (pwCF). DHEA-S is reported to have an inverse association with inflammation and warrants evaluation in pwCF.

Methods: We compared differences in DHEA-S and other hormones between pwCF (n = 180) and without CF (n = 180) and DHEA-S association with percent predicted forced expiratory volume in one second (ppFEV1).

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