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Full-Text Articles in Medicine and Health Sciences

Dataset For Effects Of Single-Session Practice Structure On Motor Skill Acquisition And Alpha And Beta Eeg Oscillations, Audrey Porter, Ronald V. Croce, Wayne Smith Jan 2023

Dataset For Effects Of Single-Session Practice Structure On Motor Skill Acquisition And Alpha And Beta Eeg Oscillations, Audrey Porter, Ronald V. Croce, Wayne Smith

Faculty Publications

Although it is known that practicing a motor skill updates the associated internal model, it is still unclear as to how cortical oscillations linked with the motor skill change under differing practice schedules. The current study investigated α- and β-power changes associated with motor skill acquisition. Firstly, we investigated the behavioral effects of practice on motor learning and retention during repetitive (RP) and variable (VP) practice schedules on an anticipation timing task. Secondly, we investigated changes in cortical α (10-13 HZ) and β (15-30 Hz) event-related synchronization and dyssynchronization (ERS/ERD) under RP and VP during early (EP) and late …


A Molecular Chemodosimeter To Probe “Closed Shell” Ions In Kidney Cells, Rashid Mia Nov 2022

A Molecular Chemodosimeter To Probe “Closed Shell” Ions In Kidney Cells, Rashid Mia

Faculty Publications

Two quinidine-functionalized coumarin molecular probes have been synthesized and have been found to bind metal cations (Cd2+, Co2+, Cu2+, Fe2+, Hg2+, Ni2+, and Zn2+) with high affinity in organic–aqueous media (DMSO–HEPES). The chemodosimeters coordinate with the Zn2+ ions in a two-to-one ratio (molecular probe : Zn2+) with a log β of 10.0 M−2. Upon the addition of the closed-shell metal ions studied, a fluorescence turn-on via an excimer formation is seen at 542 nm due to the quinaldine moiety adopting a syn arrangement when coordinated to the metal Zn2+ ions. Confocal microscopy monitored free Zn2+ ions in the Human Embryonic …


Systematic Review Of Functional Outcomes In Cancer Rehabilitation, Alix Sleight, Lynn H. Gerber, Timothy F. Marshall, Alicia Livinski, Catherine M. Alfano, Shana Harrington Pt, Ph.D., Ann Marie Flores, Aneesha Virani, Xiaorong Hu, Sandra A. Mitchell, Mitra Varedi, Melissa Eden, Samah Hayek, Beverly Reigle, Anya Kerkman, Raquel Neves, Kathleen Jablonoski, Eileen Danaher Hacker, Virginia Sun, Robin Newman, Karen Kane Mcdonnell, Allison L'Hotta, Alana Schoenhals, Nicole L. Stout Sep 2022

Systematic Review Of Functional Outcomes In Cancer Rehabilitation, Alix Sleight, Lynn H. Gerber, Timothy F. Marshall, Alicia Livinski, Catherine M. Alfano, Shana Harrington Pt, Ph.D., Ann Marie Flores, Aneesha Virani, Xiaorong Hu, Sandra A. Mitchell, Mitra Varedi, Melissa Eden, Samah Hayek, Beverly Reigle, Anya Kerkman, Raquel Neves, Kathleen Jablonoski, Eileen Danaher Hacker, Virginia Sun, Robin Newman, Karen Kane Mcdonnell, Allison L'Hotta, Alana Schoenhals, Nicole L. Stout

Faculty Publications

Objective

To systematically review the evidence regarding rehabilitation interventions targeting optimal physical or cognitive function in adults with a history of cancer and describe the breadth of evidence as well as strengths and limitations across a range of functional domains.

Data Sources

PubMed, Cumulative Index to Nursing and Allied Health Plus, Scopus, Web of Science, and Embase. The time scope was January 2008 to April 2019.

Study Selection

Prospective, controlled trials including single- and multiarm cohorts investigating rehabilitative interventions for cancer survivors at any point in the continuum of care were included, if studies included a primary functional outcome measure. …


Dependence On Humidity And Aerosol Composition Of The Gas-Particle Partitioning Of Weakly And Moderately Polar Vocs, Jeonghyeon Ahn, Guiying Rao, Eric P. Vejerano Aug 2021

Dependence On Humidity And Aerosol Composition Of The Gas-Particle Partitioning Of Weakly And Moderately Polar Vocs, Jeonghyeon Ahn, Guiying Rao, Eric P. Vejerano

Faculty Publications

Volatile organic compounds (VOCs) dominate the class of pollutants that accumulate in the atmosphere and indoors. Assessing the gas-particle partitioning of VOCs is important to determine their fate, transport, and adverse health impacts. This work is a companion to our earlier study on the temperature dependence of VOC partitioning. Here, we report our measurement of the gas-particle partition coefficient (Kp) for weakly polar (trichloroethylene, TCE) and moderately polar (n-butanol, n-BuOH) VOCs under varying relative humidity (RH) levels onto organic and inorganic aerosols. Kp of TCE was four to five orders of magnitude lower than those …


Environmentally Persistent Free Radicals As Sources Of Pops, Eric P. Vejerano, Jeonghyeon Ahn, Junaid Latif, Mustafa Mamun May 2021

Environmentally Persistent Free Radicals As Sources Of Pops, Eric P. Vejerano, Jeonghyeon Ahn, Junaid Latif, Mustafa Mamun

Faculty Publications

Environmentally persistent free radicals (EPFRs) are a new class organic pollutant sharing some of the attributes of persistent organic pollutants (POPs). This opinion/short review aims to describe the properties of EPFRs that merit their recognition as an additional and potentially significant source of POPs. EPFRs are ubiquitous in diverse environments because of multiple factors: (1) organic precursors from anthropogenic, biogenic, and other natural emission sources are abundant; multiple mechanisms in PM and soils form (2) EPFRs; and (3) EPFRs are stable and persist for a long time, thereby, accumulate in the environment and potentially transported long range. The hazards of …


Nanoantibiotics: Functions And Properties At The Nanoscale To Combat Antibiotic Resistance, M. Mustafa Mamun, Adeola Julian Sorinolu, Mariya Munir, Eric P. Vejerano May 2021

Nanoantibiotics: Functions And Properties At The Nanoscale To Combat Antibiotic Resistance, M. Mustafa Mamun, Adeola Julian Sorinolu, Mariya Munir, Eric P. Vejerano

Faculty Publications

One primary mechanism for bacteria developing resistance is frequent exposure to antibiotics. Nanoantibiotics (nAbts) is one of the strategies being explored to counteract the surge of antibiotic resistant bacteria. nAbts are antibiotic molecules encapsulated with engineered nanoparticles (NPs) or artificially synthesized pure antibiotics with a size range of ≤100 nm in at least one dimension. NPs may restore drug efficacy because of their nanoscale functionalities. As carriers and delivery agents, nAbts can reach target sites inside a bacterium by crossing the cell membrane, interfering with cellular components, and damaging metabolic machinery. Nanoscale systems deliver antibiotics at enormous particle number concentrations. …


Propranolol Sensitizes Vascular Sarcoma Cells To Doxorubicin By Altering Lysosomal Drug Sequestration And Drug Efflux, Jhuma Saha, Jong Hyuk Kim, Clarissa N. Amaya, Caleb M. Witcher, Ali Khammanivong, Derek M. Korpela, David R. Brown, Josephine Taylor, Brad A. Bryan, Erin B. Dickerson Jan 2021

Propranolol Sensitizes Vascular Sarcoma Cells To Doxorubicin By Altering Lysosomal Drug Sequestration And Drug Efflux, Jhuma Saha, Jong Hyuk Kim, Clarissa N. Amaya, Caleb M. Witcher, Ali Khammanivong, Derek M. Korpela, David R. Brown, Josephine Taylor, Brad A. Bryan, Erin B. Dickerson

Faculty Publications

Angiosarcoma is a rare cancer of blood vessel–forming cells with a high patient mortality and few treatment options. Although chemotherapy often produces initial clinical responses, outcomes remain poor, largely due to the development of drug resistance. We previously identified a subset of doxorubicin-resistant cells in human angiosarcoma and canine hemangiosarcoma cell lines that exhibit high lysosomal accumulation of doxorubicin. Hydrophobic, weak base chemotherapeutics, like doxorubicin, are known to sequester within lysosomes, promoting resistance by limiting drug accessibility to cellular targets. Drug synergy between the beta adrenergic receptor (β-AR) antagonist, propranolol, and multiple chemotherapeutics has been documented in vitro, and …


Elementary Classroom Teachers’ Self-Reported Use Of Movement Integration Products And Perceived Facilitators And Barriers Related To Product Use, Roddrick Dugger, Aaron Rafferty, Ethan Hunt, Michael W. Beets, Collin Andrew Webster, Brian Chen, Jeffrey Michael Rehling, Robert Glenn Weaver Sep 2020

Elementary Classroom Teachers’ Self-Reported Use Of Movement Integration Products And Perceived Facilitators And Barriers Related To Product Use, Roddrick Dugger, Aaron Rafferty, Ethan Hunt, Michael W. Beets, Collin Andrew Webster, Brian Chen, Jeffrey Michael Rehling, Robert Glenn Weaver

Faculty Publications

Movement integration (MI) products are designed to provide children with physical activity during general education classroom time. The purpose of this study was to examine elementary classroom teachers’ self-reported use of MI products and subsequent perceptions of the facilitators of and barriers to MI product use. This study utilized a mixed-methods design. Elementary classroom teachers (n = 40) at four schools each tested four of six common MI products in their classroom for one week. Teachers completed a daily diary, documenting duration and frequency of product use. Following each product test, focus groups were conducted with teachers to assess facilitators …


A Method To Measure The Partitioning Coefficient Of Volatile Organic Compounds In Nanoparticles, Guiying Rao, Jeonghyeon Ahn, Abigail Evans, Michelle Casey, Eric P. Vejerano Aug 2020

A Method To Measure The Partitioning Coefficient Of Volatile Organic Compounds In Nanoparticles, Guiying Rao, Jeonghyeon Ahn, Abigail Evans, Michelle Casey, Eric P. Vejerano

Faculty Publications

The partitioning behavior of volatile organic compounds (VOCs) into nanoparticles is less studied compared to those of semivolatile organic compounds (SVOCs) because of the lower concentration of the VOCs that is expected to partition into particles. One challenge in measuring the accurate partition coefficient of VOCs is quantifying their low mass fraction that sorbed on nanoparticles and differentiating them from the high VOC concentrations present in the gas-phase. Systematically characterizing the partitioning coefficient at a specific environmental condition is also difficult when sampling in the field. During field sampling, thermal and non-thermal issues such as sampling artifacts and non-equilibrium conditions …


A Letter To Reconsider The Conditions For Testing Decontaminated N95 Respirators For Emergency Reuse To Address Shortage, Eric P. Vejerano, Jeonghyeon Ahn Jul 2020

A Letter To Reconsider The Conditions For Testing Decontaminated N95 Respirators For Emergency Reuse To Address Shortage, Eric P. Vejerano, Jeonghyeon Ahn

Faculty Publications

The battle with COVID-19 pandemic has resulted in the shortage of personal protective equipment, particularly, N95 respirators. Healthcare workers who reused N95 respirators may resort to unproven methods of cleaning/sterilization that can severely compromise the respirators’ filtration efficiency. A recently issued guideline will test decontaminated N95 respirators against particles with a median diameter of 0.075 ± 0.020 µm at a flow rate of 85 L min–1. For emergency reuse, these conditions may be too stringent. N95 respirators tested at this flow rate had predicted efficiencies of < 69%, assuming complete degradation of their electrostatic coating. Experimental efficiencies were ~15% lower. For emergency reuse, we recommend to either adjust the flow rate closer to normal breathing, or the size of the test particle should reflect that of virus-laden respiratory aerosols (~> 0.5 µm). By reconsidering the test conditions, a substantial fraction of used/decontaminated respirators can …


Nutrient Timing: A Garage Door Of Opportunity?, Shawn M. Arent, Harry P. Cintineo, Bridget A. Mcfadden, Alexa Jenny Chandler, Michelle Angelique Arent Jun 2020

Nutrient Timing: A Garage Door Of Opportunity?, Shawn M. Arent, Harry P. Cintineo, Bridget A. Mcfadden, Alexa Jenny Chandler, Michelle Angelique Arent

Faculty Publications

Nutrient timing involves manipulation of nutrient consumption at specific times in and around exercise bouts in an effort to improve performance, recovery, and adaptation. Its historical perspective centered on ingestion during exercise and grew to include pre- and post-training periods. As research continued, translational focus remained primarily on the impact and outcomes related to nutrient consumption during one specific time period to the exclusion of all others. Additionally, there seemed to be increasing emphasis on outcomes related to hypertrophy and strength at the expense of other potentially more impactful performance measures. As consumption of nutrients does not occur at only …


Can The Fut 2 Gene Variant Have An Effect On The Body Weight Of Patients Undergoing Bariatric Surgery? - Preliminary, Exploratory Study, Natalia Komorniak, Alexandra Martynova-Van Kley, Armen Nalian, Wiktoria Wardziukiewicz, Karolina Skoniecznaa-Zydecka, Daniel Styburski, Joanna Palma, Bartosz Kowalewski, Krzysztof Kaseja, Ewa Stachowska Jan 2020

Can The Fut 2 Gene Variant Have An Effect On The Body Weight Of Patients Undergoing Bariatric Surgery? - Preliminary, Exploratory Study, Natalia Komorniak, Alexandra Martynova-Van Kley, Armen Nalian, Wiktoria Wardziukiewicz, Karolina Skoniecznaa-Zydecka, Daniel Styburski, Joanna Palma, Bartosz Kowalewski, Krzysztof Kaseja, Ewa Stachowska

Faculty Publications

Background: The FUT2 gene (Se gene) encoding the enzyme α-1,2-L-fucosyltransferase 2 seems to have a significant effect on the number and type of bacteria colonizing the intestines. Methods: In a group of 19 patients after bariatric surgery, the polymorphism (rs601338) of FUT2 gene was analyzed in combination with body mass reduction, intestinal microbiome (16S RNA sequencing), and short chain fatty acids (SCFA) measurements in stools. Results: Among the secretors (Se/Se polymorphism of the FUT2 gene rs601338, carriers of GG variant), correlations between waist-hip ratio (WHR) and propionate content and an increase in Prevotella, Escherichia, Shigella, and Bacteroides were observed. On …


Female Family Members Lack Understanding Of Indeterminate Negative Brca1/2 Test Results Shared By Probands, Deborah Himes, Deborah K. Gibbons, Wendy C. Birmingham, Renea L. Beckstrand, Amanda Gammon, Anita Y. Kinney, Margaret F. Clayton May 2019

Female Family Members Lack Understanding Of Indeterminate Negative Brca1/2 Test Results Shared By Probands, Deborah Himes, Deborah K. Gibbons, Wendy C. Birmingham, Renea L. Beckstrand, Amanda Gammon, Anita Y. Kinney, Margaret F. Clayton

Faculty Publications

Genetic test results have important implications for close family members. Indeterminate negative results are the most common outcome of BRCA1/2 mutation testing. Little is known about family members’ understanding of indeterminate negative BRCA1/2 test results. The purpose of this mixed-methods study was to investigate how daughters and sisters received and understood genetic test results as shared by their mothers or sisters. Participants included 81 women aged 40-74 with mothers or sisters previously diagnosed with breast cancer and who received indeterminate negative BRCA1/2 test results. Participants had never been diagnosed with breast cancer nor received their own genetic testing or counseling. …


Longitudinal Homogenization Of The Microbiome Between Both Occupants And The Built Environment In A Cohort Of United States Air Force Cadets, Anukriti Sharma, Miles Richardson, Lauren Cralle, Christopher E. Stamper, Juan P. Maestre, Kelly A. Stearns-Yoder, Teodor T. Postolache, Katherine L. Bates, Kerry A. Kinney, Lisa A. Brenner, Christopher A. Lowry, Jack A. Gilbert, Andrew J. Hoisington May 2019

Longitudinal Homogenization Of The Microbiome Between Both Occupants And The Built Environment In A Cohort Of United States Air Force Cadets, Anukriti Sharma, Miles Richardson, Lauren Cralle, Christopher E. Stamper, Juan P. Maestre, Kelly A. Stearns-Yoder, Teodor T. Postolache, Katherine L. Bates, Kerry A. Kinney, Lisa A. Brenner, Christopher A. Lowry, Jack A. Gilbert, Andrew J. Hoisington

Faculty Publications

The microbiome of the built environment has important implications for human health and wellbeing; however, bidirectional exchange of microbes between occupants and surfaces can be confounded by lifestyle, architecture, and external environmental exposures. Here, we present a longitudinal study of United States Air Force Academy cadets (n = 34), which have substantial homogeneity in lifestyle, diet, and age, all factors that influence the human microbiome. We characterized bacterial communities associated with (1) skin and gut samples from roommate pairs, (2) four built environment sample locations inside the pairs’ dormitory rooms, (3) four built environment sample locations within shared spaces …


Does Family Communication Matter? Exploring Knowledge Of Breast Cancer Genetics In Cancer Families, Deborah Himes, Sarah H. Davis, Jane Lassetter Phd, Rn, Neil E. Peterson, Margaret F. Clayton, Wendy C. Birmingham, Anita Y. Kinney Mar 2019

Does Family Communication Matter? Exploring Knowledge Of Breast Cancer Genetics In Cancer Families, Deborah Himes, Sarah H. Davis, Jane Lassetter Phd, Rn, Neil E. Peterson, Margaret F. Clayton, Wendy C. Birmingham, Anita Y. Kinney

Faculty Publications

Purpose: Knowledge of breast cancer genetics is critical for those at increased hereditary risk who must make decisions about breast cancer screening options. This descriptive study explored theory-based relationships among cognitive and emotional variables related to knowledge of breast cancer genetics in cancer families. Methods: Participants included first-degree relatives of women with breast cancer who had received genetic counseling and testing. Study participants themselves did not have breast cancer and had not received genetic counseling or testing. Data were collected by telephone interviews and surveys. Variables analyzed included numeracy, health literacy, cancer-related distress, age, education, and the reported amount of …


Effectiveness Of Plant Species For Removing Atmospheric Ammonia, Marife B. Anunciado, Sheryll B. Jerez, Hans Williams, Joey Bray, Dean W. Coble, Rena Saito Jan 2019

Effectiveness Of Plant Species For Removing Atmospheric Ammonia, Marife B. Anunciado, Sheryll B. Jerez, Hans Williams, Joey Bray, Dean W. Coble, Rena Saito

Faculty Publications

Six plant species of Yaupon, Eastern red cedar, American holly, Arizona cypress, Arborvitae and Roughleaf dogwood were utilized to determine their effectiveness in the removal of atmospheric ammonia. All species were exposed to three ammonia levels (1, 5 and 10 ppm) in an environmental chamber. Foliar ammonia content was quantified using an enzymatic technique. The effects of exposure to ammonia on the physiological responses (e.g. photosynthetic activity, stomatal conductance, and transpiration rate) of plants in ambient condition were also determined using an open design photosynthetic gas exchange system. Foliar ammonia content was significantly different among the six plant species (p<0.0001) with Eastern red cedar exhibiting the highest content. The physiological responses differed significantly depending on the plant species and the ammonia treatment level. The photosynthetic response of plants to the presence of ammonia was mixed. At low exposure level, all species except Arborvitae had decreased photosynthetic activity, reducing by as much as 44.5% for Yaupon. At the highest concentration, however, Yaupon’s photosynthetic activity improved by about 10%. Exposure to ammonia caused increased stomatal conductance and transpiration rate on American holly and Arizona cypress, making them more susceptible to water loss.


Structural And Functional Determinants Of Rodent And Human Surfactant Protein A: A Synthesis Of Binding And Computational Data, Armen Nalian, Todd M. Umstead, Ching-Hui Yang, Patricia Silveyra, Neal J. Thomas, Joanna Floros, Francis X. Mccormack, Zissis C. Chroneos Jan 2019

Structural And Functional Determinants Of Rodent And Human Surfactant Protein A: A Synthesis Of Binding And Computational Data, Armen Nalian, Todd M. Umstead, Ching-Hui Yang, Patricia Silveyra, Neal J. Thomas, Joanna Floros, Francis X. Mccormack, Zissis C. Chroneos

Faculty Publications

Surfactant protein A (SP-A) provides surfactant stability, first line host defense, and lung homeostasis by binding surfactant phospholipids, pathogens, alveolar macrophages (AMs), and epithelial cells. Non-primates express one SP-A protein whereas humans express two: SP-A1 and SP-A2 with core intra- and inter-species differences in the collagen-like domain. Here, we used macrophages and solid phase binding assays to discern structural correlates of rat (r) and human (h) SP-A function. Binding assays using recombinant rSP-A expressed in insect cells showed that lack of proline hydroxylation, truncations of amino-terminal oligomerization domains, and site-directed serine (S) or alanine (A) mutagenesis of cysteine 6 (C6S), …


Military-Related Exposures, Social Determinants Of Health, And Dysbiosis: The United States-Veteran Microbiome Project (Us-Vmp), Lisa A. Brenner, Andrew J. Hoisington, Kelly A. Stearns-Yoder, Christopher E. Stamper, Jared A. Heinze, Teodor T. Postolache, Daniel A. Hadidi, Claire A. Hoffmire, Maggie A. Stanislawski Nov 2018

Military-Related Exposures, Social Determinants Of Health, And Dysbiosis: The United States-Veteran Microbiome Project (Us-Vmp), Lisa A. Brenner, Andrew J. Hoisington, Kelly A. Stearns-Yoder, Christopher E. Stamper, Jared A. Heinze, Teodor T. Postolache, Daniel A. Hadidi, Claire A. Hoffmire, Maggie A. Stanislawski

Faculty Publications

Significant effort has been put forth to increase understanding regarding the role of the human microbiome in health- and disease-related processes. In turn, the United States (US) Veteran Microbiome Project (US-VMP) was conceptualized as a means by which to serially collect microbiome and health-related data from those seeking care within the Veterans Health Administration (VHA). In this manuscript, exposures related to military experiences, as well as conditions and health-related factors among patients seen in VHA clinical settings are discussed in relation to common psychological and physical outcomes. Upon enrollment in the study, Veterans complete psychometrically sound (i.e., reliable and valid) …


Influenza Virus Infectivity Is Retained In Aerosols And Droplets Independent Of Relative Humidity, Karen A. Kormuth, Kaisen Lin, Aaron J. Prussin, Eric P. Vejerano, Andrea J. Tiwari, Steve S. Cox, Micheal M. Myerburg, Seema S. Lakdawala, Linsey C. Marr Sep 2018

Influenza Virus Infectivity Is Retained In Aerosols And Droplets Independent Of Relative Humidity, Karen A. Kormuth, Kaisen Lin, Aaron J. Prussin, Eric P. Vejerano, Andrea J. Tiwari, Steve S. Cox, Micheal M. Myerburg, Seema S. Lakdawala, Linsey C. Marr

Faculty Publications

Pandemic and seasonal influenza viruses can be transmitted through aerosols and droplets, in which viruses must remain stable and infectious across a wide range of environmental conditions. Using humidity-controlled chambers, we studied the impact of relative humidity on the stability of 2009 pandemic influenza A(H1N1) virus in suspended aerosols and stationary droplets. Contrary to the prevailing paradigm that humidity modulates the stability of respiratory viruses in aerosols, we found that viruses supplemented with material from the apical surface of differentiated primary human airway epithelial cells remained equally infectious for 1 hour at all relative humidities tested. This sustained infectivity was …


An Expanded Toolkit For Gene Tagging Based On Mimic And Scarless Crispr Tagging In, David Li-Kroeger, Oguz Kanca, Pei-Tseng Lee, Sierra Cowan, Michael T Lee, Manish Jaiswal, Jose Luis Salazar, Yuchun He, Zhongyuan Zuo, Hugo J Bellen Aug 2018

An Expanded Toolkit For Gene Tagging Based On Mimic And Scarless Crispr Tagging In, David Li-Kroeger, Oguz Kanca, Pei-Tseng Lee, Sierra Cowan, Michael T Lee, Manish Jaiswal, Jose Luis Salazar, Yuchun He, Zhongyuan Zuo, Hugo J Bellen

Faculty Publications

We generated two new genetic tools to efficiently tag genes in Drosophila. The first, Double Header (DH) utilizes intronic MiMIC/CRIMIC insertions to generate artificial exons for GFP mediated protein trapping or T2A-GAL4 gene trapping in vivo based on Cre recombinase to avoid embryo injections. DH significantly increases integration efficiency compared to previous strategies and faithfully reports the expression pattern of genes and proteins. The second technique targets genes lacking coding introns using a two-step cassette exchange. First, we replace the endogenous gene with an excisable compact dominant marker using CRISPR making a null allele. Second, the insertion is replaced …


Aerosol Microdroplets Exhibit A Stable Ph Gradient, Haoran Wei, Eric P. Vejerano, Weinan Leng, Qishen Haung, Marjorie R. Willner, Linsey C. Marr, Peter J. Vikesland Jul 2018

Aerosol Microdroplets Exhibit A Stable Ph Gradient, Haoran Wei, Eric P. Vejerano, Weinan Leng, Qishen Haung, Marjorie R. Willner, Linsey C. Marr, Peter J. Vikesland

Faculty Publications

Suspended aqueous aerosol droplets (<50 μm) are microreactors for many important atmospheric reactions. In droplets and other aquatic environments, pH is arguably the key parameter dictating chemical and biological processes. The nature of the droplet air/ water interface has the potential to significantly alter droplet pH relative to bulk water. Historically, it has been challenging to measure the pH of individual droplets because of their inaccessibility to conventional pH probes. In this study, we scanned droplets containing 4-mercaptobenzoic acid–functionalized gold nanoparticle pH nanoprobes by 2D and 3D laser confocal Raman microscopy. Using surface-enhanced Raman scattering, we acquired the pH distribution inside approximately 20-μm-diameter phosphate-buffered aerosol droplets and found that the pH in the core of a droplet is higher than that of bulk solution by up to 3.6 pH units. This finding suggests the accumulation of protons at the air/water interface and is consistent with recent thermodynamic model results. The existence of this pH shift was corroborated by the observation that a catalytic reaction that occurs only under basic conditions (i.e., dimerization of 4-aminothiophenol to produce dimercaptoazobenzene) occurs within the high pH core of a droplet, but not in bulk solution. Our nanoparticle probe enables pH quantification through the cross-section of an aerosol droplet, revealing a spatial gradient that has implications for acid-base–catalyzed atmospheric chemistry.


A Time Course Study Of Rotavirus-Infected Intestinal Cells Treated With Stilbenoids And The Regulation Of Apoptosis, Rebecca D. Parr, Caleb M. Witcher, Rebekah Napier-Jameson, Hannah L. Wilson, Stormey Wisdom, Macie N. Mattila, Essence B. Strange, Josephine Taylor, Beatrice Clack, Fabricio Medina-Bolivar, Judith M. Ball May 2018

A Time Course Study Of Rotavirus-Infected Intestinal Cells Treated With Stilbenoids And The Regulation Of Apoptosis, Rebecca D. Parr, Caleb M. Witcher, Rebekah Napier-Jameson, Hannah L. Wilson, Stormey Wisdom, Macie N. Mattila, Essence B. Strange, Josephine Taylor, Beatrice Clack, Fabricio Medina-Bolivar, Judith M. Ball

Faculty Publications

This is a time course study of virus –host interactions that are modified with the addition of two small natural products. They appear to effect virus replication and the host response to the infection.


Physico-Chemical Characteristics Of Evaporating Respiratory Fluid Droplets, Eric P. Vejerano, Linsey C. Marr Feb 2018

Physico-Chemical Characteristics Of Evaporating Respiratory Fluid Droplets, Eric P. Vejerano, Linsey C. Marr

Faculty Publications

The detailed physico-chemical characteristics of respiratory droplets in ambient air, where they are subject to evaporation, are poorly understood. Changes in the concentration and phase of major components in a droplet—salt (NaCl), protein (mucin) and surfactant (dipalmitoylphosphatidylcholine)—may affect the viability of any pathogens contained within it and thus may affect the efficiency of transmission of infectious disease by droplets and aerosols. The objective of this study is to investigate the effect of relative humidity (RH) on the physico-chemical characteristics of evaporating droplets of model respiratory fluids. We labelled these components in model respiratory fluids and observed evaporating droplets suspended on …


Teens As Teachers In The Garden: Cultivating A Sustainable Model For Teaching Healthy Living, Virginia Bolshakova, John Gieng, C. Sheena Sidhu, Mary Vollinger, Lorena Gimeno, Jessica Guild Jan 2018

Teens As Teachers In The Garden: Cultivating A Sustainable Model For Teaching Healthy Living, Virginia Bolshakova, John Gieng, C. Sheena Sidhu, Mary Vollinger, Lorena Gimeno, Jessica Guild

Faculty Publications

School gardens are an ideal space to deliver a healthy living curriculum, such as nutrition and physical activity education, to elementary school youth. However, public schools often lack the resources and support to establish sustainable garden-based programming. We created the Healthy Living Ambassador program, a collaborative after-school garden program in low-income communities that brought together resources from schools, community programs, and University of California Cooperative Extension. This school garden program featured culturally competent teens as teachers to serve as near-peer educators and mentors to elementary school youth. The program development model incorporated lessons from sustainable community-based health program interventions and …


Incidence Of Second Malignancy In Patients With Papillary Thyroid Cancer From Surveillance, Epidemiology, And End Results 13 Dataset, Mayumi Endo, Jessica Liu, Marcelle Dougan, Jennifer Lee Jan 2018

Incidence Of Second Malignancy In Patients With Papillary Thyroid Cancer From Surveillance, Epidemiology, And End Results 13 Dataset, Mayumi Endo, Jessica Liu, Marcelle Dougan, Jennifer Lee

Faculty Publications

Increased risk of second primary malignancy (SPM) in papillary thyroid cancer (PTC) has been reported. Here, we present the most updated incidence rates of second primary malignancy from original diagnosis of PTC by using the data from the Surveillance, Epidemiology, and End Results. In this cohort, 3,200 patients developed SPM, a substantially higher number than in the reference population of 2,749 with observed to expected ratio (O/E) of 1.16 (95% CI; 1.12–1.21). Bone and joint cancer had the highest O/E ratio of 4.26 (95% confidence interval [CI] 2.33–7.15) followed by salivary gland (O/E 4.15; 95% CI 2.76–6.0) and acute lymphocytic …


A Study Of Ticks And Tick-Borne Livestock Pathogens In Pakistan, Shahid Karim, Khemraj Budachetri, Nabanita Mukherjee, Jaclyn Williams, Asma Kausar, Muhammad Jawadul Hassan, Steven W. Adamson, Scot E. Dowd, Dmitry Apanskevich, Abdullah Arijo, Zia Uddin Sindhu, Muhammad Azam Kakar, Raja Muhammad Dilpazir Khan, Shafiq Ullah, Muhammad Sohail Sajid, Abid Ali, Zafar Iqbal Jun 2017

A Study Of Ticks And Tick-Borne Livestock Pathogens In Pakistan, Shahid Karim, Khemraj Budachetri, Nabanita Mukherjee, Jaclyn Williams, Asma Kausar, Muhammad Jawadul Hassan, Steven W. Adamson, Scot E. Dowd, Dmitry Apanskevich, Abdullah Arijo, Zia Uddin Sindhu, Muhammad Azam Kakar, Raja Muhammad Dilpazir Khan, Shafiq Ullah, Muhammad Sohail Sajid, Abid Ali, Zafar Iqbal

Faculty Publications

Background

As obligate blood-feeding arthropods, ticks transmit pathogens to humans and domestic animals more often than other arthropod vectors. Livestock farming plays a vital role in the rural economy of Pakistan, and tick infestation causes serious problems with it. However, research on tick species diversity and tick-borne pathogens has rarely been conducted in Pakistan. In this study, a systematic investigation of the tick species infesting livestock in different ecological regions of Pakistan was conducted to determine the microbiome and pathobiome diversity in the indigenous ticks.

Methodology/Principal findings A total of 3,866 tick specimens were morphologically identified as 19 different tick …


A Rare Case Of Erythema Elevatum Diutinum Presenting As Diffuse Neuropathy., G H. Nguyen, E L. Guo, D Norris Jan 2017

A Rare Case Of Erythema Elevatum Diutinum Presenting As Diffuse Neuropathy., G H. Nguyen, E L. Guo, D Norris

Faculty Publications

no abstract available


Is High Folic Acid Intake A Risk Factor For Autism?—A Review, Darrell Wiens, M. Catherine Desoto Jan 2017

Is High Folic Acid Intake A Risk Factor For Autism?—A Review, Darrell Wiens, M. Catherine Desoto

Faculty Publications

Folate is required for metabolic processes and neural development. Insuring its adequate levels for pregnant women through supplementation of grain-based foods with synthetic folic acid (FA) in order to prevent neural tube defects has been an ongoing public health initiative. However, because women are advised to take multivitamins containing FA before and throughout pregnancy, the supplementation together with natural dietary folates has led to a demographic with high and rising serum levels of unmetabolized FA. This raises concerns about the detrimental effects of high serum synthetic FA, including a rise in risk for autism spectrum disorder (ASD). Some recent studies …


A Potential Tool For Clinicians; Evaluating A Computer-Led Dietary Assessment Method In Overweight And Obese Women During Weight Loss, Adrianne Widaman, Nancy Keim, Dustin Burnett, Beverly Miller, Megan Witbracht, Keith Widaman, Kevin Laugero Jan 2017

A Potential Tool For Clinicians; Evaluating A Computer-Led Dietary Assessment Method In Overweight And Obese Women During Weight Loss, Adrianne Widaman, Nancy Keim, Dustin Burnett, Beverly Miller, Megan Witbracht, Keith Widaman, Kevin Laugero

Faculty Publications

Many Americans are attempting to lose weight with the help of healthcare professionals. Clinicians can improve weight loss results by using technology. Accurate dietary assessment is crucial to effective weight loss. The aim of this study was to validate a computer-led dietary assessment method in overweight/obese women. Known dietary intake was compared to Automated Self-Administered 24-h recall (ASA24) reported intake in women (n = 45), 19–50 years, with body mass index of 27–39.9 kg/m2. Participants received nutrition education and reduced body weight by 4%–10%. Participants completed one unannounced dietary recall and their responses were compared to actual intake. Accuracy of …


Influence Of Maternal Breast Milk Ingestion On Acquisition Of The Intestinal Microbiome In Preterm Infants., Katherine E Gregory, Buck S Samuel, Pearl Houghteling, Guru Shan, Frederick M Ausubel, Ruslan I Sadreyev, W Allan Walker Dec 2016

Influence Of Maternal Breast Milk Ingestion On Acquisition Of The Intestinal Microbiome In Preterm Infants., Katherine E Gregory, Buck S Samuel, Pearl Houghteling, Guru Shan, Frederick M Ausubel, Ruslan I Sadreyev, W Allan Walker

Faculty Publications

BACKGROUND: The initial acquisition and early development of the intestinal microbiome during infancy are important to human health across the lifespan. Mode of birth, antibiotic administration, environment of care, and nutrition have all been shown to play a role in the assembly of the intestinal microbiome during early life. For preterm infants, who are disproportionately at risk of inflammatory intestinal disease (i.e., necrotizing enterocolitis), a unique set of clinical factors influence the establishment of the microbiome. The purpose of this study was to establish the influence of nutritional exposures on the intestinal microbiome in a cohort of preterm infants early …