245 results on '"Clapp, M."'
Search Results
102. Selecting a Spay/Neuter Program for Animal Control in the City of Charlotte
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Quisenberry, D. and Clapp, M. E.
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- 1983
103. A FARMER'S TESTIMONY AGAINST TOBACCO. MONTAGUE, MASS., Jan. 14, 1861.
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CLAPP, M. H.
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- 1861
104. Crystallization of A15 Nb sub 3 Ge from the amorphous state
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Clapp, M [Department of Mechanical Engineering, University of Massachusetts, Amherst, Massachusetts 01003 (USA)]
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- 1990
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105. Progress report for the Department of Energy
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Clapp, M.
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- 1980
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106. Multiplicity of solutions to yamabe type equations
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Fernández Morelos, Juan Carlos and Clapp, M.
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Ciencias Físico-Matemáticas e Ingenierías - Published
- 2017
107. Soluciones que cambian de signo de problemas elípticos no lineales en dominios con frontera no acotada
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Fernández Ipia, Yeferson, Clapp, M., Ackermann, Nils Heye, and Iturriaga Acevedo, Renato Gabriel
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Ciencias Físico-Matemáticas e Ingenierías - Published
- 2016
108. Elliptic problems with critical and supercritical nonlinearities
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Faya Torres, Jorge Antonio and Clapp, M.
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Ciencias Físico-Matemáticas e Ingenierías - Published
- 2014
109. Intertwining semiclassical solutions to a Schrödinger-Newton system
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Mónica Clapp, Silvia Cingolani, Simone Secchi, Cingolani, S, Clapp, M, and Secchi, S
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Physics ,Group (mathematics) ,Applied Mathematics ,Semiclassical physics ,Intertwining solutions ,Electromagnetic potential ,Schrodinger-Newton system ,Quantum state ,Quantum mechanics ,Homogeneous space ,Electromagnetic potential, Intertwining solutions, Nonlocal nonlinearity, Schrodinger-Newton system, Semiclassical solutions ,Discrete Mathematics and Combinatorics ,Nonlocal nonlinearity ,Homomorphism ,Schrödinger-Newton system, nonlocal nonlinearity, electromagnetic potential, semiclassical solutions, intertwining solutions ,Semiclassical solutions ,Constant (mathematics) ,MAT/05 - ANALISI MATEMATICA ,Unit (ring theory) ,Complex number ,Analysis ,Mathematical physics - Abstract
We study the problem \[ \begin{cases} \left( -\varepsilon\mathrm{i}\nabla+A(x)\right) ^{2}u+V(x)u=\varepsilon ^{-2}\left( \frac{1}{|x|}\ast|u|^{2}\right) u,\\ u\in L^{2}(\mathbb{R}^{3},\mathbb{C}), \varepsilon\nabla u+\mathrm{i}Au\in L^{2}(\mathbb{R}^{3},\mathbb{C}^{3}), \end{cases} \] where A\colon\mathbb{R}^{3}\rightarrow\mathbb{R}^{3} is an exterior magnetic potential, V\colon\mathbb{R}^{3}\rightarrow\mathbb{R} is an exterior electric potential, and \varepsilon is a small positive number. If A=0 and \varepsilon=\hbar is Planck's constant this problem is equivalent to the Schrödinger-Newton equations proposed by Penrose in [23] to describe his view that quantum state reduction occurs due to some gravitational effect. We assume that A and V are compatible with the action of a group G of linear isometries of \mathbb{R}^{3}. Then, for any given homomorphism \tau:G\rightarrow\mathbb{S}^{1} into the unit complex numbers, we show that there is a combined effect of the symmetries and the potential V on the number of semiclassical solutions u:\mathbb{R} ^{3}\rightarrow\mathbb{C} which satisfy u(gx)=\tau(g)u(x) for all g\in G, x\in\mathbb{R}^{3}. We also study the concentration behavior of these solutions as \varepsilon → 0.
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- 2013
110. Soluciones positivas y que cambian de signo de problemas elípticos con no linealidades locales y no locales en dominios exteriores
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Salazar Lozano, Dora Cecilia and Clapp, M.
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Ciencias Físico-Matemáticas e Ingenierías - Published
- 2013
111. Multiple solutions to a magnetic nonlinear Choquard equation
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Silvia Cingolani, Mónica Clapp, Simone Secchi, Cingolani, S, Clapp, M, and Secchi, S
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35Q55, 35Q40, 35J20, 35B06 ,General Mathematics ,Scalar (mathematics) ,Mathematics::Analysis of PDEs ,Intertwining solution ,Intertwining solutions ,General Physics and Astronomy ,Nonlinear Choquard equation ,Electromagnetic potential ,Combinatorics ,Physics and Astronomy (all) ,Mathematics - Analysis of PDEs ,FOS: Mathematics ,Mathematics (all) ,Nabla symbol ,Physics ,Applied Mathematics ,Multiple solutions ,Multiple solution ,Complex valued ,Applied Mathematic ,Nonlinear system ,Nonlocal nonlinearity ,Group homomorphism ,Complex number ,Analysis of PDEs (math.AP) - Abstract
We consider the stationary nonlinear magnetic Choquard equation [(-\mathrm{i}\nabla+A(x))^{2}u+V(x)u=(\frac{1}{|x|^{\alpha}}\ast |u|^{p}) |u|^{p-2}u,\quad x\in\mathbb{R}^{N}%] where $A\ $is a real valued vector potential, $V$ is a real valued scalar potential$,$ $N\geq3$, $\alpha\in(0,N)$ and $2-(\alpha/N), Comment: To appear on ZAMP
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- 2011
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112. Multiplicidad de soluciones simetricas de problemas elipticos con exponente critico
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Cano Rodriguez, Alfredo and Clapp, M.
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Ciencias Físico-Matemáticas e Ingenierías - Published
- 2006
113. Infinidad de soluciones de problemas elipticos con perturbacion de simetrias en dominios simetricos
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Hernandez Martinez, Eric Fabian and Clapp, M.
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Ciencias Físico-Matemáticas e Ingenierías - Published
- 2006
114. Continuous Al5 Nb/sub 3/Ge superconducting tapes via the amorphous state
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Clapp, M
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- 1989
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115. Multiplicidad de caracteristicas cerradas en hipersuperficies de tipo contacto
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Martinez Leon, José and Clapp, M.
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Ciencias Físico-Matemáticas e Ingenierías - Published
- 1996
116. Synthesis of metastable A-15 superconducting compounds by ion implantation and electron-beam annealing. Technical progress report
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Clapp, M
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- 1982
117. Rapid solidification of superconducting materials. Final technical report
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Clapp, M
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- 1987
118. IMPROVEMENTS RELATING TO THERMO-ELECTRIC CONVERTER TUBES FOR GENERATING ELECTRIC POWER FROM HEAT.
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Clapp, M
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- 1969
119. INDICATORS FOR NUCLEAR REACTORS.
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Clapp, M
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- 1967
120. CBGTPy: An extensible cortico-basal ganglia-thalamic framework for modeling biological decision making.
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Clapp M, Bahuguna J, Giossi C, Rubin JE, Verstynen T, and Vich C
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- Animals, Models, Neurological, Neural Pathways physiology, Humans, Decision Making physiology, Basal Ganglia physiology, Thalamus physiology, Cerebral Cortex physiology
- Abstract
Here we introduce CBGTPy, a virtual environment for designing and testing goal-directed agents with internal dynamics that are modeled on the cortico-basal-ganglia-thalamic (CBGT) pathways in the mammalian brain. CBGTPy enables researchers to investigate the internal dynamics of the CBGT system during a variety of tasks, allowing for the formation of testable predictions about animal behavior and neural activity. The framework has been designed around the principle of flexibility, such that many experimental parameters in a decision making paradigm can be easily defined and modified. Here we demonstrate the capabilities of CBGTPy across a range of single and multi-choice tasks, highlighting the ease of set up and the biologically realistic behavior that it produces. We show that CBGTPy is extensible enough to apply to a range of experimental protocols and to allow for the implementation of model extensions with minimal developmental effort., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2025 Clapp et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2025
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121. Cancer diagnosis during pregnancy is associated with severe maternal and neonatal morbidity.
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Kanbergs A, Clapp M, Wu CF, Melamed A, Agusti N, Viveros-Carreño D, Zamorano AS, Virili F, Rauh-Hain JA, and Nitecki Wilke R
- Abstract
Background: Data on maternal and fetal outcomes in patients diagnosed with cancer during pregnancy are limited. Given expected increase in patients diagnosed with cancer during pregnancy, there is a growing need to evaluate clinical outcomes., Objective: To evaluate obstetric outcomes among women with early-stage gynecologic or breast cancer who were diagnosed during pregnancy compared to women without cancer in a population-based cohort., Study Design: We performed a population-based study of women aged 18 to 45 years with stage I gynecologic or stage I to III breast cancer reported to the California Cancer Registry for the years 2000 to 2012. Data were linked to the 2000 to 2012 California birth data to produce a database with cancer characteristics and obstetric outcomes. We included patients who had a delivery within the 10 months following cancer diagnosis. The primary outcome was severe maternal morbidity. Secondary outcomes included preterm birth and neonatal morbidity. Propensity scores were used to match similar controls to cases in a 2:1 ratio based on demographic attributes and medical comorbidities included in the Obstetric Comorbidity Index. Logistic regressions were used to evaluate outcomes., Results: The cohort consisted of 503 women with cancer in pregnancy (319 breast, 125 ovarian, 59 cervical) and 1006 matched controls. Cancer during pregnancy was associated with higher odds of severe maternal morbidity (6.8% vs <1.1%; odds ratio 8.03, 95% confidence interval 3.82-16.88), preterm birth between 32 and 36 weeks (32.6% vs 8.3%, odds ratio 5.38, 95% confidence interval 4.02-7.20), and neonatal morbidity (12.5% vs 6.1%; odds ratio 2.22, 95% confidence interval 1.53-3.21) compared to matched controls. In subanalysis of severe maternal morbidity indicators, hysterectomy and sepsis were significantly associated with cancer during pregnancy (4.8% vs <1.1%, P<.001; <2.2% vs 0.0%, P=.037, respectively)., Conclusion: Cancer during pregnancy is associated with increased risk of maternal and neonatal morbidity. These findings highlight the need for careful management and consideration of obstetric outcomes in these patients., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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122. CBGTPy: An extensible cortico-basal ganglia-thalamic framework for modeling biological decision making.
- Author
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Clapp M, Bahuguna J, Giossi C, Rubin JE, Verstynen T, and Vich C
- Abstract
Here we introduce CBGTPy, a virtual environment for designing and testing goal-directed agents with internal dynamics that are modeled on the cortico-basal-ganglia-thalamic (CBGT) pathways in the mammalian brain. CBGTPy enables researchers to investigate the internal dynamics of the CBGT system during a variety of tasks, allowing for the formation of testable predictions about animal behavior and neural activity. The framework has been designed around the principle of flexibility, such that many experimental parameters in a decision making paradigm can be easily defined and modified. Here we demonstrate the capabilities of CBGTPy across a range of single and multi-choice tasks, highlighting the ease of set up and the biologically realistic behavior that it produces. We show that CBGTPy is extensible enough to apply to a range of experimental protocols and to allow for the implementation of model extensions with minimal developmental effort., Competing Interests: Conflict of interest The authors declare no conflict of interest.
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- 2024
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123. The Use of Biologic Mesh for Repair of Perianal Fistulas.
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Gemma N, McMahon K, Clapp M, Ma T, and Laipply E
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This is a case series of three patients who presented with complex anorectal fistulas. Each patient underwent repair of complex anorectal fistulas with biologic mesh. We will discuss each case and our institution's experience with this relatively new technique. This case series demonstrates the use of biologic mesh for the repair of complex anorectal fistulas. Three patients are discussed who underwent repair of perianal fistulas using ACell mesh by two separate surgeons. We will discuss the rationale for offering this treatment, as well as the advantages and disadvantages. The use of biologic mesh in perianal fistulas is a relatively new topic that needs further investigation. Perianal fistulas can be difficult to manage for both patients and surgeons. There are many options for repair, ranging from simple to complex. Biologic mesh for complex fistulas may be a useful option to avoid the morbidity of more complex repairs, such as flaps., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Gemma et al.)
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- 2024
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124. Rates of Induction of Labor at 39 Weeks and Cesarean Delivery Following Publication of the ARRIVE Trial.
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Wood R, Freret TS, Clapp M, and Little S
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- Female, Humans, Pregnancy, Labor, Induced, Cross-Sectional Studies, Cesarean Section, Labor, Obstetric
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- 2023
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125. Relationship between anal cancer recurrence and cigarette smoking.
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McMahon KR, Gemma N, Clapp M, Sanchez-Montejo P, Dibello J, and Laipply E
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Background: The incidence of anal cancer has been increasing in the United States. Smoking is a well-established risk factor; however, the impact of smoking on disease re-currence and outcome has not been well studied. The aim of this study was to assess the association between anal cancer recurrence and cigarette smoking., Aim: To investigate the relationship between cigarette smoking status and anal cancer treatment outcome., Methods: The cancer registry from a single, community hospital was screened for patients with anal cancer between 2010 and 2021. The following characteristics were gathered from the database: Age; sex; cigarette smoking history; American Joint Committee on Cancer Clinical Stage Group; response to therapy; recurrence; time to recurrence; mortality; time to death; and length of follow-up. Patients were divided into the following groups: Current smokers; former smokers; and never smokers. SPSSv25.0 software (IBM Corp., Armonk, NY, United States) was used for statistical analysis., Results: A total of 95 patients from the database met the screening criteria. There were 37 never smokers, 22 former smokers, and 36 current smokers. There was no difference between groups in regards to race or sex. There was no difference in the American Joint Committee on Cancer Clinical Stage Group between groups. The former smokers were significantly older when compared to never smokers and current smokers (66.5 ± 13.17 vs 57.4 ± 7.82 vs 63.7 ± 13.80, P = 0.011). Former smokers and current smokers had a higher recurrence rate compared to never smokers (30.8% and 20.8% compared to zero, P = 0.009). There was not a significant difference in recurrence between former smokers and current smokers. There was no difference in the mortality, non-response rate, or time to death between the groups., Conclusion: Our data contributes evidence that cigarette smoking status is associated with increased recurrence for patients with anal cancer., Competing Interests: Conflict-of-interest statement: All the authors report having no relevant conflicts of interest for this article., (©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.)
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- 2023
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126. Availability Versus Accessibility: Identifying COVID-19 Testing Deserts Across Massachusetts.
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Radford CE, James KE, Clapp M, Bryant AS, and Goldfarb IT
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- Humans, SARS-CoV-2, Pandemics, Massachusetts, COVID-19 Testing, COVID-19 epidemiology
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Throughout the COVID-19 pandemic, communities of color have faced significantly higher rates of COVID-19 infection, as well as poor clinical outcomes. These differences are driven by long-standing structural inequities that prevent effective social distancing efforts and are further exacerbated by disparities in COVID-19 testing. Our study applied the concept of "COVID-19 testing deserts" to systematically identify gaps in testing resource allocation across Massachusetts in May 2020 and March 2021. Testing deserts were identified at the census tract level, using criteria developed by the Department of Agriculture for food deserts. Testing deserts occurred more frequently in segregated Hispanic, segregated Black, mixed minority, and integrated communities, as well as in neighborhoods with low vehicle access and in federally designated Medically Underserved Areas. Segregated communities were those in which more than 50 percent of the population self-identified as non-Hispanic White, Hispanic, non-Hispanic Black, or non-Hispanic Asian, respectively. Testing deserts were overrepresented in counties with high COVID-19 incidence rates, suggesting that testing accessibility is essential for prompt COVID-19 diagnosis and self-isolation.
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- 2023
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127. Increasing Frequency of Affirmed Name and Pronoun Documentation in a Pediatric Emergency Department.
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Sequeira GM, Kidd KM, Thornburgh C, Ley A, Sciulli D, Clapp M, Pitetti R, Matheo L, Womeldorff H, Christakis DA, and Zuckerbraun NS
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- Child, Adolescent, Humans, Female, Male, Documentation, Quality Improvement, Electronic Health Records, Gender Identity, Emergency Service, Hospital
- Abstract
Background and Objectives: In a previous study of 204 transgender and gender diverse youth in our region, 44% reported being made to feel uncomfortable in the emergency department (ED) because of their gender identity. The objective of our study was to conduct a 2 year quality improvement project to increase affirmed name and pronoun documentation in the pediatric ED., Methods: Using process mapping, we identified 5 key drivers and change ideas. The key driver diagram was updated as interventions were implemented over 3 Plan-Do-Study-Act cycles. Our primary outcome, the percentage of ED visits per month with pronouns documented, was plotted on a run chart with the goal of seeing a 50% increase in form completion from a baseline median of ∼14% over the 2 year study period., Results: The frequency of pronoun documentation increased from a baseline median of 13.8% to a median of 47.8%. The most significant increase in pronoun documentation occurred in Plan-Do-Study-Act cycle 3, immediately after ED-wide dissemination of a near-miss case and subsequent call for improvement by ED leadership. Roughly 1.7% of all encounters during the study period involved patients whose pronouns were discordant from the sex listed in their electronic health record., Conclusions: This quality-improvement project increased the frequency of pronoun documentation in the ED. This has the potential to improve the quality of care provided to transgender and gender diverse youth in the ED setting and identify patients who may benefit from receiving a referral to a pediatric gender clinic for additional support., (Copyright © 2022 by the American Academy of Pediatrics.)
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- 2022
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128. Identifying control ensembles for information processing within the cortico-basal ganglia-thalamic circuit.
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Vich C, Clapp M, Rubin JE, and Verstynen T
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- Animals, Cognition, Mammals, Neural Pathways physiology, Reward, Uncertainty, Basal Ganglia physiology, Thalamus physiology
- Abstract
In situations featuring uncertainty about action-reward contingencies, mammals can flexibly adopt strategies for decision-making that are tuned in response to environmental changes. Although the cortico-basal ganglia thalamic (CBGT) network has been identified as contributing to the decision-making process, it features a complex synaptic architecture, comprised of multiple feed-forward, reciprocal, and feedback pathways, that complicate efforts to elucidate the roles of specific CBGT populations in the process by which evidence is accumulated and influences behavior. In this paper we apply a strategic sampling approach, based on Latin hypercube sampling, to explore how variations in CBGT network properties, including subpopulation firing rates and synaptic weights, map to variability of parameters in a normative drift diffusion model (DDM), representing algorithmic aspects of information processing during decision-making. Through the application of canonical correlation analysis, we find that this relationship can be characterized in terms of three low-dimensional control ensembles within the CBGT network that impact specific qualities of the emergent decision policy: responsiveness (a measure of how quickly evidence evaluation gets underway, associated with overall activity in corticothalamic and direct pathways), pliancy (a measure of the standard of evidence needed to commit to a decision, associated largely with overall activity in components of the indirect pathway of the basal ganglia), and choice (a measure of commitment toward one available option, associated with differences in direct and indirect pathways across action channels). These analyses provide mechanistic predictions about the roles of specific CBGT network elements in tuning the way that information is accumulated and translated into decision-related behavior., Competing Interests: The authors have declared that no competing interests exist.
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- 2022
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129. Purkinje cell-specific deletion of CREB worsens alcohol-induced cerebellar neuronal losses and motor deficits.
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Todd D, Clapp M, Dains P, Karacay B, and Bonthius DJ
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- Animals, Cerebellum, Cyclic AMP Response Element-Binding Protein genetics, Cyclic AMP Response Element-Binding Protein pharmacology, Ethanol toxicity, Female, Humans, Mice, Mice, Knockout, Nitric Oxide Synthase Type I, Pregnancy, Fetal Alcohol Spectrum Disorders pathology, Purkinje Cells pathology
- Abstract
Introduction: Exposure to alcohol during pregnancy can kill developing fetal neurons and lead to fetal alcohol spectrum disorder (FASD) in the offspring. However, not all fetuses are equally vulnerable to alcohol toxicity. These differences in vulnerability among individuals are likely due, at least in part, to genetic differences. Some genes encode neuroprotective molecules that act through signaling pathways to protect neurons against alcohol's toxic effects. One signaling pathway that can protect cultured neurons against alcohol-induced cell death in vitro is the cAMP pathway. A goal of this study was to determine whether the cAMP pathway can exert a similar neuroprotective effect against alcohol in vivo. A key molecule within the cAMP pathway is cAMP response element binding protein (CREB). In this study, CREB was specifically disrupted in cerebellar Purkinje cells to study its role in protection of cerebellar neurons against alcohol toxicity., Methods: Mice with Purkinje cell-specific knockout of CREB were generated with the Cre-lox system. A 2 × 2 design was used in which Cre-negative and Cre-positive mice received either 0.0 or 2.2 mg/g ethanol by intraperitoneal (i.p.) injection daily over postnatal day (PD) 4-9. Stereological cell counts of cerebellar Purkinje cells and granule cells were performed on PD 10. Motor function was assessed on PD 40 using the rotarod., Results: Purkinje cell-specific disruption of CREB alone (in the absence of alcohol) induced only a small reduction in Purkinje cell number. However, the loss of CREB function from Purkinje cells greatly increased the vulnerability of Purkinje cells to alcohol-induced cell death. While alcohol killed 20% of Purkinje cells in the Cre-negative (CREB-expressing) mice, alcohol killed 57% of Purkinje cells in the Cre-positive (CREB-nonexpressing) mice. This large loss of Purkinje cells did not lead to similar alcohol-induced losses of granule cells. In the absence of alcohol, lack of CREB function in Purkinje cells had no effect on rotarod performance. However, in the presence of alcohol, disruption of CREB in Purkinje cells substantially worsened rotarod performance., Discussion: Disruption of a single gene (CREB) in a single neuronal population (Purkinje cells) greatly increases the vulnerability of that cell population to alcohol-induced cell death and worsens alcohol-induced brain dysfunction. The results suggest that the cAMP pathway can protect cells in vivo against alcohol toxicity and underline the importance of genetics in determining the neuropathology and behavioral deficits of FASD., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2022
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130. Association between morbidity among term newborns and low-risk caesarean delivery rates.
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Clapp MA, Daw JR, James KE, Little SE, Robinson JN, Bates SV, and Kaimal AJ
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- Adult, Cesarean Section adverse effects, Cross-Sectional Studies, Female, Humans, Infant, Infant, Newborn, Morbidity, Pregnancy, Term Birth, United States epidemiology, Cesarean Section statistics & numerical data, Pregnancy Outcome epidemiology
- Abstract
Objective: To examine the association between county-level caesarean delivery (CD) rates among women at low risk and morbidity among term newborns., Design: Cross-sectional study., Setting: Population-based study of US county-level birth data from 2015 to 2017., Population: Nulliparous women with term, singleton, vertex-presenting infants (NTSV) at low risk for morbidity., Methods: The primary exposure was county-level CD rates., Main Outcome Measures: The outcome was morbidity among the low-risk NTSV cohort, categorised as severe (5-minute Apgar score of ≤3, assisted ventilation for ≥6 hours, severe neurologic injury or seizure, transfer or death) or moderate (5-minute Apgar score of <7 but >3, administration of antibiotics or assisted ventilation at delivery). We used linear regression models to determine the association between county NTSV CD and neonatal morbidity rates with cluster robust standard errors., Results: The analysis included data from 2 753 522 births in 952 counties from all 48 states. The mean NTSV CD rate was 23.6% (standard deviation 4.8%). The median severe and moderate neonatal morbidity rates were 15.2 (interquartile range, IQR 9.4-23.6) and 52.5 (IQR 33.4-75.7) per 1000 births, respectively. In the unadjusted analysis using the risk-adjusted exposure and outcome, every percentage point increase in the CD rate of a county was associated with 0.6 (95% CI -0.9, -0.3) and 2.3 fewer (95% CI -3.4, -1.1) cases of severe and moderate neonatal morbidity per 1000 live births. After adjustment for other county factors, the relationships remained significant. These findings were tested in multiple sensitivity analyses., Conclusions: Lower county-level NTSV CD rates were associated with a small increase in morbidity among term newborns in the USA., Tweetable Abstract: Lower county-level caesarean delivery rates were associated with an increase in morbidity among term newborns in the USA., (© 2021 John Wiley & Sons Ltd.)
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- 2022
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131. Correction: Zebrafish dazl regulates cystogenesis and germline stem cell specification during the primordial germ cell to germline stem cell transition.
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Bertho S, Clapp M, Banisch TU, Bandemer J, Raz E, and Marlow FL
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- 2022
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132. Zebrafish dazl regulates cystogenesis and germline stem cell specification during the primordial germ cell to germline stem cell transition.
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Bertho S, Clapp M, Banisch TU, Bandemer J, Raz E, and Marlow FL
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- Animals, Cytokinesis physiology, Female, Fertility genetics, Fertility physiology, Gene Knockout Techniques, Male, Mutagenesis, Stem Cells metabolism, Zebrafish embryology, Zebrafish Proteins genetics, Zebrafish Proteins metabolism, Germ Cells growth & development, Germ Cells metabolism, RNA-Binding Proteins genetics, RNA-Binding Proteins metabolism, Zebrafish genetics, Zebrafish metabolism
- Abstract
Fertility and gamete reserves are maintained by asymmetric divisions of the germline stem cells to produce new stem cells or daughters that differentiate as gametes. Before entering meiosis, differentiating germ cells (GCs) of sexual animals typically undergo cystogenesis. This evolutionarily conserved process involves synchronous and incomplete mitotic divisions of a GC daughter (cystoblast) to generate sister cells connected by intercellular bridges that facilitate the exchange of materials to support rapid expansion of the gamete progenitor population. Here, we investigated cystogenesis in zebrafish and found that early GCs are connected by ring canals, and show that Deleted in azoospermia-like (Dazl), a conserved vertebrate RNA-binding protein (Rbp), is a regulator of this process. Analysis of dazl mutants revealed the essential role of Dazl in regulating incomplete cytokinesis, germline cyst formation and germline stem cell specification before the meiotic transition. Accordingly, dazl mutant GCs form defective ring canals, and ultimately remain as individual cells that fail to differentiate as meiocytes. In addition to promoting cystoblast divisions and meiotic entry, dazl is required for germline stem cell establishment and fertility., Competing Interests: Competing interests The authors declare no competing or financial interests., (© 2021. Published by The Company of Biologists Ltd.)
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- 2021
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133. The credit assignment problem in cortico-basal ganglia-thalamic networks: A review, a problem and a possible solution.
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Rubin JE, Vich C, Clapp M, Noneman K, and Verstynen T
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- Reinforcement, Psychology, Synapses, Thalamus, Basal Ganglia, Models, Neurological
- Abstract
The question of how cortico-basal ganglia-thalamic (CBGT) pathways use dopaminergic feedback signals to modify future decisions has challenged computational neuroscientists for decades. Reviewing the literature on computational representations of dopaminergic corticostriatal plasticity, we show how the field is converging on a normative, synaptic-level learning algorithm that elegantly captures both neurophysiological properties of CBGT circuits and behavioral dynamics during reinforcement learning. Unfortunately, the computational studies that have led to this normative algorithmic model have all relied on simplified circuits that use abstracted action-selection rules. As a result, the application of this corticostriatal plasticity algorithm to a full model of the CBGT pathways immediately fails because the spatiotemporal distance between integration (corticostriatal circuits), action selection (thalamocortical loops) and learning (nigrostriatal circuits) means that the network does not know which synapses should be reinforced to favor previously rewarding actions. We show how observations from neurophysiology, in particular the sustained activation of selected action representations, can provide a simple means of resolving this credit assignment problem in models of CBGT learning. Using a biologically realistic spiking model of the full CBGT circuit, we demonstrate how this solution can allow a network to learn to select optimal targets and to relearn action-outcome contingencies when the environment changes. This simple illustration highlights how the normative framework for corticostriatal plasticity can be expanded to capture macroscopic network dynamics during learning and decision-making., (© 2020 Federation of European Neuroscience Societies and John Wiley & Sons Ltd.)
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- 2021
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134. Preterm Birth During the Coronavirus Disease 2019 (COVID-19) Pandemic in a Large Hospital System in the United States.
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Wood R, Sinnott C, Goldfarb I, Clapp M, McElrath T, and Little S
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- Ethnicity, Female, Hospitals, Humans, Infant, Newborn, Pandemics, Pregnancy, SARS-CoV-2, United States epidemiology, COVID-19, Premature Birth epidemiology
- Abstract
Competing Interests: Financial Disclosure Dr. Thomas McElrath receives grant funding from NX Prenatal outside the submitted work. He also receives non-financial support for his service on the advisory boards of Mirvie Inc, Roach, and Zea Biosciences, all outside the submitted work. The other authors did not report any potential conflicts of interest.
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- 2021
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135. Smartphone data during the COVID-19 pandemic can quantify behavioral changes in people with ALS.
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Beukenhorst AL, Collins E, Burke KM, Rahman SM, Clapp M, Konanki SC, Paganoni S, Miller TM, Chan J, Onnela JP, and Berry JD
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- Aged, Data Collection, Female, Humans, Interrupted Time Series Analysis, Male, Middle Aged, SARS-CoV-2, Time Factors, United States, Amyotrophic Lateral Sclerosis, Behavior, COVID-19, Geographic Information Systems, Mobile Applications, Smartphone, Travel
- Abstract
Introduction: Passive data from smartphone sensors may be useful for health-care research. Our aim was to use the coronavirus disease-2019 (COVID-19) pandemic as a positive control to assess the ability to quantify behavioral changes in people with amyotrophic lateral sclerosis (ALS) from smartphone data., Methods: Eight participants used the Beiwe smartphone application, which passively measured their location during the COVID-19 outbreak. We used an interrupted time series to quantify the effect of the US state of emergency declaration on daily home time and daily distance traveled., Results: After the state of emergency declaration, median daily home time increased from 19.4 (interquartile range [IQR], 15.4-22.0) hours to 23.7 (IQR, 22.2-24.0) hours and median distance traveled decreased from 42 (IQR, 13-83) km to 3.7 (IQR, 1.5-10.3) km. The participant with the lowest functional ability changed behavior earlier. This participant stayed at home more and traveled less than the participant with highest functional ability, both before and after the state of emergency., Discussion: We provide evidence that smartphone-based digital phenotyping can quantify the behavior of people with ALS. Although participants spent large amounts of time at home at baseline, the COVID-19 state of emergency declaration reduced their mobility further. Given participants' high level of daily home time, it is possible that their exposure to COVID-19 could be less than that of the general population., (© 2020 The Authors. Muscle & Nerve published by Wiley Periodicals LLC.)
- Published
- 2021
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136. A cross-sectional study of hand function in inclusion body myositis: Implications for functional rating scale.
- Author
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Lin AY, Clapp M, Karanja E, Dooley K, Weihl CC, and Wang LH
- Subjects
- Adult, Aged, Aged, 80 and over, Cross-Sectional Studies, Female, Fingers physiopathology, Humans, Male, Middle Aged, Hand physiopathology, Hand Strength physiology, Myositis, Inclusion Body physiopathology, Severity of Illness Index
- Abstract
Inclusion body myositis (IBM) is a slowly progressive and heterogeneous disorder that is a challenge for measuring clinical trial efficacy. The current methods of measuring progression of the disease utilizes the Inclusion Body Myositis Functional Rating Scale, grip strength by dynamometer, and finger flexor strength. One of the hallmarks of the disease is selective deep finger flexor weakness. To date, no adequate data has been available to determine how well the Functional Rating Scale relates to this hallmark physical exam deficit. Our study is the first to investigate the degree of correlation between items pertaining to hand function in the Functional Rating Scale with measured grip and finger flexor strength in IBM patients. We have found a lower than expected correlation with finger flexor strength and even lower with grip strength. The current Functional Rating Scale will benefit from optimization to measure clinical progression more accurately., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2020
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137. Women's Coverage, Utilization, Affordability, And Health After The ACA: A Review Of The Literature.
- Author
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Lee LK, Chien A, Stewart A, Truschel L, Hoffmann J, Portillo E, Pace LE, Clapp M, and Galbraith AA
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- Adult, Costs and Cost Analysis, Female, Health Services Accessibility, Humans, Insurance, Health, Medically Uninsured, Middle Aged, Pregnancy, United States, Women's Health, Young Adult, Insurance Coverage, Patient Protection and Affordable Care Act
- Abstract
Women of working age (ages 19-64) faced specific challenges in obtaining health insurance coverage and health care before the Affordable Care Act. Multiple factors contributed to women's experiencing uninsurance, underinsurance, and increased financial burdens related to obtaining health care. This literature review summarizes evidence on the law's effects on women's health care and health and finds improvements in overall coverage, access to health care, affordability, preventive care use, mental health care, use of contraceptives, and perinatal outcomes. Despite major progress after the Affordable Care Act's implementation, barriers to coverage, access, and affordability remain, and serious threats to women's health still exist. Highlighting the law's effects on women's health is critical for informing future policies directed toward the continuing improvement of women's health care and health.
- Published
- 2020
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138. Evaluating the Accuracy of Hemorrhoids: Comparison Among Specialties and Symptoms.
- Author
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Idrees JJ, Clapp M, Brady JT, Stein SL, Reynolds HL, and Steinhagen E
- Subjects
- Fissure in Ano diagnosis, Gastroenterology statistics & numerical data, General Practice statistics & numerical data, Gynecology statistics & numerical data, Hemorrhoids complications, Humans, Hypertrophy diagnosis, Pain etiology, Pruritus etiology, Referral and Consultation, Retrospective Studies, Skin Diseases diagnosis, Anal Canal pathology, Diagnostic Errors statistics & numerical data, Gastrointestinal Hemorrhage etiology, Hemorrhoids diagnosis, Rectal Diseases etiology
- Abstract
Background: A large proportion of patients with anorectal complaints are referred to colorectal surgeons with the label of hemorrhoids., Objective: The purpose of this study was to review presenting symptoms and frequency of accurate diagnosis, as well as to analyze determinants of misdiagnosis to guide educational endeavors., Design: This was a retrospective study., Settings: The study was conducted at a tertiary care academic center., Patients: The charts of patients referred to a colorectal clinic with the diagnosis of hemorrhoids from January 1, 2012, to January 1, 2017, were reviewed., Main Outcome Measures: The accuracy of the referring provider's diagnosis of hemorrhoids was measured., Results: Review of charts identified 476 patients with the referral diagnosis of hemorrhoids. The most common presenting symptoms were bleeding (63%; n = 302), pain (48%; n = 228), and protrusion (39%; n = 185). Anal examination (ie, external inspection and/or digital internal examination) was documented in only 48%. The hemorrhoid diagnostic accuracy was 65% (n = 311). Among patients with incorrect hemorrhoid diagnoses (35%; n = 169), actual diagnosis was anal fissure (34%), skin tag (27%), and hypertrophied papilla (6%). One rectal and 2 anal carcinomas were found (0.63%). Compared with general practitioners, gastroenterologists had 86% higher odds of correct diagnosis (OR = 1.86 (95% CI, 1.10-3.10); p = 0.02), whereas the gynecologists had 68% lower odds of correct diagnosis at the time of referral (OR = 0.32 (95% CI, 0.10-0.80); p = 0.02). On multivariable analysis, referring specialty was not predictive of accurate diagnosis. Patients presenting with protrusion had 73% higher odds of accurate diagnosis (OR = 1.7 (95% CI, 1.1-2.7); p = 0.02), whereas patients presenting with pain (OR = 1.6 (95% CI, 1.1-2.5); p = 0.03) or pruritus (OR = 2.5 (95% CI, 1.2-5.0); p = 0.008) were more likely to be misdiagnosed., Limitations: This is a retrospective study. Not all of the charts contained all data points. The number of patients may limit the power of the study to detect some differences., Conclusions: A variety of anorectal complaints are diagnosed as hemorrhoids by providers who have initial contact with the patients. Educational programs directed toward improving physician knowledge can potentially improve diagnostic accuracy and earlier initiation of appropriate care. Presenting symptoms other than protrusion lead to higher rate of misdiagnosis by a referring physician. See Video Abstract at http://links.lww.com/DCR/A847.
- Published
- 2019
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139. Reward-driven changes in striatal pathway competition shape evidence evaluation in decision-making.
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Dunovan K, Vich C, Clapp M, Verstynen T, and Rubin J
- Subjects
- Animals, Basal Ganglia, Corpus Striatum, Feedback, Humans, Learning, Models, Neurological, Neural Pathways physiology, Neuronal Plasticity physiology, Neurons physiology, Reinforcement, Psychology, Reward, Synapses physiology, Thalamus, Decision Making physiology, Dopaminergic Neurons physiology, Nerve Net physiology
- Abstract
Cortico-basal-ganglia-thalamic (CBGT) networks are critical for adaptive decision-making, yet how changes to circuit-level properties impact cognitive algorithms remains unclear. Here we explore how dopaminergic plasticity at corticostriatal synapses alters competition between striatal pathways, impacting the evidence accumulation process during decision-making. Spike-timing dependent plasticity simulations showed that dopaminergic feedback based on rewards modified the ratio of direct and indirect corticostriatal weights within opposing action channels. Using the learned weight ratios in a full spiking CBGT network model, we simulated neural dynamics and decision outcomes in a reward-driven decision task and fit them with a drift diffusion model. Fits revealed that the rate of evidence accumulation varied with inter-channel differences in direct pathway activity while boundary height varied with overall indirect pathway activity. This multi-level modeling approach demonstrates how complementary learning and decision computations can emerge from corticostriatal plasticity., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2019
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140. Efficacy of extracting indices from large-scale acoustic recordings to monitor biodiversity.
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Buxton RT, McKenna MF, Clapp M, Meyer E, Stabenau E, Angeloni LM, Crooks K, and Wittemyer G
- Subjects
- Acoustics, Animals, Ecosystem, Forests, Biodiversity, Conservation of Natural Resources
- Abstract
Passive acoustic monitoring could be a powerful way to assess biodiversity across large spatial and temporal scales. However, extracting meaningful information from recordings can be prohibitively time consuming. Acoustic indices (i.e., a mathematical summary of acoustic energy) offer a relatively rapid method for processing acoustic data and are increasingly used to characterize biological communities. We examined the relationship between acoustic indices and the diversity and abundance of biological sounds in recordings. We reviewed the acoustic-index literature and found that over 60 indices have been applied to a range of objectives with varying success. We used 36 of the most indicative indices to develop a predictive model of the diversity of animal sounds in recordings. Acoustic data were collected at 43 sites in temperate terrestrial and tropical marine habitats across the continental United States. For terrestrial recordings, random-forest models with a suite of acoustic indices as covariates predicted Shannon diversity, richness, and total number of biological sounds with high accuracy (R
2 ≥ 0.94, mean squared error [MSE] ≤170.2). Among the indices assessed, roughness, acoustic activity, and acoustic richness contributed most to the predictive ability of models. Performance of index models was negatively affected by insect, weather, and anthropogenic sounds. For marine recordings, random-forest models poorly predicted Shannon diversity, richness, and total number of biological sounds (R2 ≤ 0.40, MSE ≥ 195). Our results suggest that using a combination of relevant acoustic indices in a flexible model can accurately predict the diversity of biological sounds in temperate terrestrial acoustic recordings. Thus, acoustic approaches could be an important contribution to biodiversity monitoring in some habitats., (© 2018 The Authors. Conservation Biology published by Wiley Periodicals, Inc. on behalf of Society for Conservation Biology.)- Published
- 2018
- Full Text
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141. Gut microbiota's effect on mental health: The gut-brain axis.
- Author
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Clapp M, Aurora N, Herrera L, Bhatia M, Wilen E, and Wakefield S
- Published
- 2017
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142. Acquisition of Oocyte Polarity.
- Author
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Clapp M and Marlow FL
- Subjects
- Animals, Centrioles metabolism, Female, Oogenesis, Cell Polarity, Oocytes cytology
- Abstract
Acquisition of oocyte polarity involves complex translocation and aggregation of intracellular organelles, RNAs, and proteins, along with strict posttranscriptional regulation. While much is still unknown regarding the formation of the animal-vegetal axis, an early marker of polarity, animal models have contributed to our understanding of these early processes controlling normal oogenesis and embryo development. In recent years, it has become clear that proteins with self-assembling properties are involved in assembling discrete subcellular compartments or domains underlying subcellular asymmetries in the early mitotic and meiotic cells of the female germline. These include asymmetries in duplication of the centrioles and formation of centrosomes and assembly of the organelle and RNA-rich Balbiani body, which plays a critical role in oocyte polarity. Notably, at specific stages of germline development, these transient structures in oocytes are temporally coincident and align with asymmetries in the position and arrangement of nuclear components, such as the nuclear pore and the chromosomal bouquet and the centrioles and cytoskeleton in the cytoplasm. Formation of these critical, transient structures and arrangements involves microtubule pathways, intrinsically disordered proteins (proteins with domains that tend to be fluid or lack a rigid ordered three-dimensional structure ranging from random coils, globular domains, to completely unstructured proteins), and translational repressors and activators. This review aims to examine recent literature and key players in oocyte polarity.
- Published
- 2017
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143. In Reply.
- Author
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Little S, Clapp M, Wilkins-Haug L, Zera C, and Robinson J
- Subjects
- Female, Humans, Pregnancy, Gestational Age, Stillbirth epidemiology, Term Birth
- Published
- 2016
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144. The effect of adolescence and advanced maternal age on the incidence of complete and partial molar pregnancy.
- Author
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Gockley AA, Melamed A, Joseph NT, Clapp M, Sun SY, Goldstein DP, Horowitz NS, and Berkowitz RS
- Subjects
- Adolescent, Adult, Female, Humans, Incidence, Pregnancy, United States epidemiology, Young Adult, Hydatidiform Mole classification, Hydatidiform Mole epidemiology, Maternal Age
- Abstract
Objective: To compare the age-specific incidence of complete (CM) and partial molar (PM) pregnancy in a large tertiary care center in the United States., Methods: Incidence rates of CM and PM per 10,000 live births were calculated using databases from Brigham and Women's Hospital, between 2000 and 2013. Age-specific rates were calculated for women younger than 20 years old (adolescents), 20-39 years old (average age), and 40 years and older (advanced maternal age). Pearson χ(2) test was used to evaluate potential differences among groups. Rate ratios (RR) and 95% confidence intervals (CI) were used to compare risk of molar pregnancy among average age women with that of adolescents and women of advanced age. Holm-Bonferonni adjustment was used to correct for multiple comparisons., Results: Between 2000 and 2013, there were 255 molar pregnancies (140 CM and 115 PM) and 105,942 live births, corresponding to a molar pregnancy rate of 24 per 10,000 live births (95% CI 21-27). Rates of CM and PM were 13 (95% CI 11-16) and 11 (95% CI 9-14) per 10,000 live births respectively. The incidence of CM differed significantly among maternal age groups (p<0.001). Compared to average age women, adolescents were 7.0 times as likely to develop CM (95% CI 3.6-8.9, p<0.001), and women with advanced maternal age were nearly twice as likely (1.9, 95% CI 1.8-4.7, p=0.002). The rate of PM did not vary significantly among age groups (p=0.26)., Conclusions: Adolescence and advanced maternal age were associated with increased risk of complete mole, but not partial mole., (Copyright © 2016 Elsevier Inc. All rights reserved.)
- Published
- 2016
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145. Surgical Site Infection Reduction Program: Challenges and Opportunities.
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Shea KG, Styhl AC, King HA, Hammons J, and Clapp M
- Subjects
- Child, Costs and Cost Analysis, Humans, Practice Guidelines as Topic, Risk Assessment, Safety Management organization & administration, Orthopedic Procedures adverse effects, Surgical Wound Infection economics, Surgical Wound Infection prevention & control
- Abstract
Surgical site infections (SSIs) make up about 23% of hospital-acquired infections and may cost up to 10 billion dollars annually in direct medical expenses. St. Luke's Health System of Boise, Idaho implemented a committee to reduce its incidence of SSIs, focusing on the orthopaedic and neurosurgical departments. After identifying risk factors associated with patient medical comorbidities, operating room practices, and type of procedure, Project Zero recommended changes. The implementation of a preoperative clinic and protocol management of environmental and procedural factors reduced the hospitals rate by 50%. Project Zero continues to research best practices for clean room management and preventative care, striving to reach the overall goal of zero infections.
- Published
- 2015
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146. Comparison of access, outcomes and experiences of older adults and working age adults in psychological therapy.
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Chaplin R, Farquharson L, Clapp M, and Crawford M
- Subjects
- Adult, Age Factors, Aged, Clinical Audit, Female, Health Services Accessibility standards, Health Services Needs and Demand, Humans, Male, Middle Aged, Outcome Assessment, Health Care, Patient Satisfaction, Retrospective Studies, Surveys and Questionnaires, United Kingdom, Young Adult, Mental Disorders therapy, Mental Health Services standards
- Abstract
Objective: This study aimed to evaluate the access, experiences and outcomes of older adults receiving psychological therapies in comparison with adults of working age, Methods: Primary and secondary care providers of psychological therapy services participated in the National Audit of Psychological Therapies. The main standards of access, experience and outcomes were measured by retrospective case records audits of people who completed therapy and a service user questionnaire. Outcomes were measured pre-treatment and post-treatment on the PHQ-9 and GAD-7., Results: A total of 220 services across 97 organisations took part, 137 (62%) in primary care. Service user questionnaires were received from 14 425 (20%) respondents. A total of 122 740 records were audited, of whom 7794 (6.4%) were older adults. They were under represented as 13% of the sample would have been expected to be over 65 years according to age adjusted psychiatric morbidity figures. People over 75 years had the third expected referral rate. Significantly, more older adults than working age adults completed therapy (59.6% vs 48.6%) and were assessed as having 'recovered' post-treatment (58.5% vs 45.5%). Older adults were more satisfied with waiting times and numbers of sessions, but there were no differences in self-reported experience of therapy., Conclusion: Although older adults are less likely to gain access to psychological therapies, they appear to have better outcomes than working age adults. Further work is needed to improve access for older people., (Copyright © 2014 John Wiley & Sons, Ltd.)
- Published
- 2015
- Full Text
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147. Patient Satisfaction, chronic pain, and functional status following laparoscopic ventral hernia repair.
- Author
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Liang MK, Clapp M, Li LT, Berger RL, Hicks SC, and Awad S
- Subjects
- Aged, Analysis of Variance, Chronic Pain epidemiology, Chronic Pain etiology, Chronic Pain physiopathology, Cohort Studies, Female, Follow-Up Studies, Hernia, Ventral diagnosis, Herniorrhaphy adverse effects, Humans, Incidence, Laparoscopy adverse effects, Logistic Models, Male, Middle Aged, Multivariate Analysis, Pain Measurement, Pain, Postoperative diagnosis, Recurrence, Retrospective Studies, Risk Assessment, Statistics, Nonparametric, Treatment Outcome, Hernia, Ventral surgery, Herniorrhaphy methods, Laparoscopy methods, Pain, Postoperative epidemiology, Patient Satisfaction statistics & numerical data
- Abstract
Background: Ventral hernia repairs are one of the most common surgeries performed. Symptoms are the most common motivation for repair. Unfortunately, outcomes of repair are typically measured in recurrence and infection rather than patient focused results. We correlated factors associated with decreased patient satisfaction, chronic pain, and diminished functional status following laparoscopic ventral hernia repair (LVHR) METHODS: A retrospective study of 201 patients from two affiliated institutions was performed. Patient satisfaction, chronic abdominal pain, pain scores, and Activities Assessment Scale results were obtained in 122 patients. Results were compared with univariate and multivariate analysis., Results: Thirty-two (25.4%) patients were dissatisfied with their LVHR while 21 (17.2%) patients had chronic abdominal pain and 32 (26.2%) patients had poor functional status following LVHR. Decreased patient satisfaction was associated with perception of poor cosmetic outcome (OR 17.3), eventration (OR 10.2), and chronic pain (OR 1.4). Chronic abdominal pain following LVHR was associated with incisional hernia (OR 9.0), recurrence (OR 4.3), eventration (OR 6.0), mesh type (OR 1.9), or ethnicity (OR 0.10). Decreased functional status with LVHR was associated with mesh type used (OR 3.7), alcohol abuse (OR 3.4), chronic abdominal pain (OR 1.3), and age (OR 1.1)., Conclusions: One-fourth of patients have poor quality outcome following LVHR. These outcomes are affected by perception of cosmesis, eventration, chronic pain, hernia type, recurrence, mesh type, and patient characteristics/co-morbidities. Closing central defects and judicious mesh selection may improve patient satisfaction and function. Focus on patient-centered outcomes is warranted.
- Published
- 2013
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148. Use of FloSeal Sealant in the Surgical Management of Tubal Ectopic Pregnancy.
- Author
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Clapp M and Huang JC
- Abstract
Background. Surgery is sometimes required for the management of tubal ectopic pregnancies. Historically, surgeons used electrosurgery to obtain hemostasis. Topical hemostatic sealants, such as FloSeal, may decrease the reliance on electrosurgery and reduce thermal injury to the tissue. Case. A 33-year-old G1 P0 received methotrexate for a right tubal pregnancy. The patient became symptomatic six days later and underwent a laparoscopic right salpingotomy. After multiple unsuccessful attempts to obtain hemostasis with electrocoagulation, FloSeal was used and hemostasis was obtained. Six weeks later, a hysterosalpingogram (HSG) confirmed tubal patency. The patient subsequently had an intrauterine pregnancy. Conclusion. FloSeal helped to achieve hemostasis during a laparoscopic salpingotomy and preserve tubal patency. FloSeal is an effective alternative and adjunct to electrosurgery in the surgical management of tubal pregnancy.
- Published
- 2013
- Full Text
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149. Out-of-hospital cardiac arrest outcomes stratified by rhythm analysis.
- Author
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Mader TJ, Nathanson BH, Millay S, Coute RA, Clapp M, and McNally B
- Subjects
- Adult, Female, Humans, Male, Cardiopulmonary Resuscitation, Electric Countershock, Electrocardiography, Out-of-Hospital Cardiac Arrest physiopathology, Out-of-Hospital Cardiac Arrest therapy
- Abstract
Background: Survival data for out-of-hospital cardiac arrest (OHCA) victims initially in PEA or asystole who convert to a shockable rhythm during attempted resuscitation, relative to an initial shockable rhythm, have never been previously reported. This study was done to assess OHCA outcomes among a large cohort of adults in the CARES dataset stratified by three rhythm categories: initial shockable (IS), converted shockable (CS), and never shockable (NS)., Methods: The study was IRB approved. All adult index events at participating sites (2005-2010) were study eligible. All patient data elements were provided. Odds ratios of CS and NS status for survival to hospital discharge were calculated via multivariate logistic regression that adjusted for demographics, site, resuscitation initiators, AED use, and other covariates., Results: There were 40,274 OHCA records submitted to the CARES registry during the study period. After exclusions, our final sample size was 30,939 (7404 IS [23.9%], 3225 CS [10.4%], 20,310 NS [65.7%]). Raw survival rates of CS and NS patients were similar (4.7% vs. 4.1%, respectively; p=0.08) but significantly lower than IS patients (26.9%; p<0.001). The adjusted OR of survival to hospital discharge for CS was 0.17 (95% CI: 0.14, 0.20) and for NS it was 0.17 (95% CI: 0.15, 0.18) with IS as the referent., Conclusion: After OHCA, the survival rate for CS victims is significantly lower than for IS patients. These findings suggest that CS and IS are different entities and that alternatives to existing resuscitation algorithm tailored to patients with CS should be investigated., (Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.)
- Published
- 2012
- Full Text
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150. Implementation of a Center for Drug Policy across a system of hospitals.
- Author
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Klinger EV, Yeh YC, Churchill W, Clapp M, and Reddy P
- Subjects
- Efficiency, Organizational, Guidelines as Topic, United States, Multi-Institutional Systems, Organizational Policy, Pharmacy Service, Hospital organization & administration
- Published
- 2010
- Full Text
- View/download PDF
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