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Analysis of PFAAs in American alligators part 2： Potential dietary exposure of South Carolina hunters from recreationally harvested alligator meat

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Journal of Environmental Sciences 2017年第11期29卷 31-38页

作者： jessica J.Tipton louis J.Guillette Jr Susan lovelace Benjamin B.Parrott Thomas R.Rainwater jessica l.reiner College of Charleston Charleston SC 29724 USA Medical University of South Carolina Department of Obstetrics and Gynecology Charleston SC 29425 USA University of Georgia Odum School of Ecology Savannah River Ecology Laboratory Jackson SC 29831 USA Torn Yawkey Wildlife Center & Belle W. Baruch Institute of Coastal Ecology and Forest Science Clemson University P.O. Box 59(5 Georgetown SC 29442 USA National Institute of Standards and Technology Chemical Sciences Division Hollings Marine Laboratory Charleston SC 29412 USA

Exposure to perfluorinated alkyl acids（PFAAs） has been linked to many harmful health effects including reproductive disorders, developmental delays, and altered liver and kidney function. Most human exposure to environmental contaminants, including PFAAs,occurs through consumption of contaminated food or drinking water. This study uses PFAA data from meat samples collected from recreationally harvested American alligators（Alligator mississippiensis） in South Carolina to assess potential dietary exposure of hunters and their families to PFAAs. Consumption patterns were investigated using intercept surveys of 23 hunters at a wild game meat processor. An exposure scenario using the average consumption frequency, portion size, and median perfluorooctane sulfonic acid（PFOS） concentration in alligator meat from all hunt units found the daily dietary exposure to be 2.11 ng/kg body weight per day for an adult human. Dietary PFOS exposure scenarios based on location of harvest suggested the highest daily exposure occurs with alligator meat from the Middle Coastal hunt unit in South Carolina. Although no samples were found to exceed the recommended threshold for no consumption of PFOS found in Minnesota state guidelines, exposure to a mixture of PFAAs found in alligator meat and site-specific exposures based on harvest location should be considered in determining an appropriate guideline for vulnerable populations potentially exposed to PFAAs through consumption of wild alligator meat.

关键词： Public hunt American alligator Dietary exposure PFOS Consumption advisory Contaminant consumption

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Analysis of PFAAs in American alligators part 1： Concentrations in alligators harvested for consumption during South Carolina public hunts

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Journal of Environmental Sciences 2017年第11期29卷 24-30页

作者： jessica J.Tipton louis J.Guillette Jr Susan lovelace Benjamin B.Parrott Thomas R.Rainwater jessica l.reiner College of Charleston Charleston SC 29424 USA Medical University of South Carolina Department of Obstetrics and Gynecology Charleston SC 29425 USA University of Georgia Odum School of Ecology Savannah River Ecology Laboratory Jackson SC 29831 USA Tom Yawkey Wildlife Center & Belle W. Baruch Institute of Coastal Ecology and Forest Science Clemson University P.O. Box 596 Georgetown SC 29442 USA National Institute of Standards and Technology Chemical Sciences Division Hollings Marine Laboratory Charleston SC 29412 USA

Environmental contamination resulting from the production or release of harmful chemicals can lead to negative consequences for wildlife and human health. Perfluorinated alkyl acids（PFAAs） were historically produced as protective coatings for many household items and currently persist in the environment, wildlife, and humans. PFAAs have been linked to immune suppression, endocrine disruption, and developmental toxicity in wildlife and laboratory studies. This study examines the American alligator, Alligator mississippiensis,as an important indicator of ecosystem contamination and a potential pathway for PFAA exposure in humans. Alligator meat harvested in the 2015 South Carolina（SC） public hunt season and prepared for human consumption was collected and analyzed for PFAAs to determine meat concentrations and relationships with animal body size（total length）, sex, and location of harvest. Of the 15 PFAAs analyzed, perfluorooctane sulfonate（PFOS） was found in all alligator meat samples and at the highest concentrations（median 6.73 ng/g）. No relationship was found between PFAA concentrations and total length or *** of one or all compounds varied significantly across sampling locations, with alligators harvested in the Middle Coastal hunt unit having the highest PFOS concentrations（median 16.0 ng/g; p = 0.0001）. Alligators harvested specifically from Berkley County, SC（located in the Middle Coastal hunt unit） had the highest PFOS concentrations and the greatest number of PFAAs detected（p 〈 0.0001）. The site-specific nature of PFAA concentrations in alligator meat observed in this study suggests a source of PFAA contamination in Berkley County, SC.

关键词： Perfluorinated alkyl acids American alligators South Carolina Perfluorooctane sulfonate(PFOS) Dietary exposure

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Tissue distribution of perfluoroalkyl acids and health status in wild Mozambique tilapia(Oreochromis mossambicus) from loskop Dam, Mpumalanga, South Africa

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Journal of Environmental Sciences 2017年第11期29卷 59-67页

作者： Jacqueline T.Bangma jessica l.reiner Hannes Botha Theresa M.Cantu Marco A.Gouws Matthew P.Guillette Jeremy P.Koelmel Wilmien J.luus-Powell Jan Myburgh Olivia Rynders Joseph R.Sara Willem J.Smit John A.Bowden Medical University of South Carolina Department of Obstetrics and Gynecology Charleston SC 29412 United States National Institute of Standards and Technology Chemical Sciences Division Hollings Marine Laboratory Charleston SC 29412 United States Department of Biodiuersity University of Limpopo Souenga South Africa Scientific Services Mpumalanga Tourism and Parks Agency Nelspruit 1200 South Africa Department of Science School of Natural Resource Management Nelson Mandela Metropolitan University George 6529 South Africa Uniuersity of Florida Department of Chemistry Gainesville FL 32611 United States Department of ParaclinieaI Sciences Faculty of Veterinary Science University of Pretoria Onderstepoort South Africa

This study examined concentrations of 15 perfluoroalkyl acids（PFAAs） in tissues from male Mozambique tilapia（Oreochromis mossambicus） collected at loskop Dam, Mpumalanga,South Africa in 2014 and 2016. Nine of the 15 PFAAs were detected frequently and were included in statistical analysis and included two of the most commonly known PFAAs,perfluorooctanesulfonic acid（PFOS）（median, 41.6 ng/g） and perfluorooctanoic acid（PFOA）（median, 0.0825 ng/g）. Of the tissues measured, plasma（2016 and 2014 median, 22.2 ng/g）contained the highest PFAA burden followed by（in descending order）： liver（median,11.6 ng/g）, kidney（median, 9.04 ng/g）, spleen（median, 5.92 ng/g）, adipose（median, 2.54 ng/g）, and muscle（median, 1.11 ng/g）. loskop Dam tilapia have been affected by an inflammatory disease of the adipose tissue known as pansteatitis, so this study also aimed to investigate relationships between PFAA tissue concentrations and incidence of pansteatitis or fish health status. Results revealed that healthy tilapia exhibited an overall higher（p-value 〈 0.05） PFAA burden than pansteatitis-affected tilapia across all *** analysis showed that organs previously noted in the literature to contain the highest PFAA concentrations, such as kidney, liver, and plasma, were the organs driving the difference in PFAA burden between the two tilapia groups. Care must be taken in the interpretations we draw from not only the results of our study, but also other PFAA measurements made on populations（human and wildlife alike） under differing health status.

关键词： Perfluoroalkyl acids liquid chromatography mass spectrometry Pansteatitis Perfluorooctanesulfonic acid Tissue distribution

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Multiple sclerosis is at a checkpoint: advancing the program

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Neural Regeneration Research 2025年第3期20卷 811-812页

作者： Brandon C.Smith jessica l.Williams Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biological Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

Multiple sclerosis(MS) is a chronic inflammatory and demyelinating disease of the central nervous system(CNS). Patients with MS experience sensory and motor function loss due to myelin and/or axon damage perpetuated b... 详细信息

关键词： Hauser sclerosis damage

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COVID-19:Reducing the risk via diet and lifestyle

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Journal of Integrative Medicine 2023年第1期21卷 1-16页

作者： jessica l.Campbell 160 Goat Island Road LeighAuckland 0985New Zealand

This review shows that relatively simple changes to diet and lifestyle can significantly,and rapidly,reduce the risks associated with coronavirus disease 2019(COVID-19)in terms of infection risk,severity of disease,and even disease-related mortality.A wide range of interventions including regular exercise,adequate sleep,plant-based diets,maintenance of healthy weight,dietary supplementation,and time in nature have each been shown to have beneficial effects for supporting more positive health outcomes with COVID-19,in addition to promoting better overall *** paper brings together literature from these areas and presents the argument that non-pharmaceutical approaches should not be overlooked in our response to *** is noted that,in several cases,interventions discussed result in risk reductions equivalent to,or even greater than,those associated with currently available *** the balance of evidence suggests benefits,and the risk is minimal to none,it is suggested that communicating the power of individual actions to the public becomes morally ***,many lives could be saved,and many harms from the vaccine mandates avoided,if we were willing to embrace this lifestyle-centred approach in our efforts to deal with COVID-19.

关键词： COVID-19 SARS-CoV-2 Exercise Sleep Diet Risk reduction behaviour

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The hydrologic record of karst systems: linking soil moisture to the carbon isotope signatures of soils above the Blue Spring cave system

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Acta Geochimica 2017年第3期36卷 392-395页

作者： Yuchen liu jessica l.Oster Jennifer l.Druhan Department of Geology University of Illinois Urbana Champaign Department of Earth and Environmental Science Vanderbilt University

Speleothem carbonates are precipitated continuously from inorganic carbon dissolved in seepage water infiltrating from the land surface,that reflects a mixture of atmospheric CO_2,respired soil carbon,and epikarst sources,each with distinct δ^(13)C *** aid in deconvolving these signatures,soil samples were collected above the Blue Spring cave system in Sparta,Tennessee,USA and subjected to a series of incubation experiments,in order to constrain the correlation between CO_2respiration rates and soil *** relationship is used to parameterize a simple mixing model which predicts the relationship between δ^(13)C and soil moisture in fluids infiltrating into the underlying cave system.

关键词： Speleothem δ^13C CO2 respiration Soil moisture

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Plant physiological changes along an encroachment gradient: an assessment of US Mid-Atlantic serpentine barrens

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Journal of Plant Ecology 2018年第6期11卷 853-865页

作者： Nicole A.Havrilchak jessica l.Schedlbauer Department of Biology West Chester University750 S.Church StreetWest ChesterPA 19383USA

Aims Serpentine barrens of the Mid-Atlantic United States are globally rare,grass-dominated ecosystems thought to exclude C3 spe-cies and characterized by unique soil ***,like many grassland ecosystems globally,these sites are presently facing encroachment by surrounding *** this ecosystem,the tendril climbing vine,Smilax rotundifolia,forms dense thickets around bar-rens that typically precede forest *** numerous factors speculatively initiate and promote encroachment in these systems,few studies have examined photosynthetic responses of serpentine grasses to changes in resource availability initiated by encroachers or physiological ability of encroaching *** to colonize high-light barren *** sought to under-stand both environmental and physiological dynamics of encroach-ment along an irradiance gradient in these *** At three serpentine barren sites in southeastern Pennsylvania,physiological responses of the native grasses Sorghastrum nutans and Schizachyrium scoparium to increased shading by ***-folia were ***,the physiological performance of *** in the forest understory was compared to that in sunlit barrens ***-saturated photosynthesis(A_(sat)),stomatal conductance(g_(s)),instantaneous transpiration efficiency(ITE),maximum efficiency of photosystem II(F_(v)/F_(m)),midday leaf water potential(ψ_(leaf))and specific leaf area(SlA)were measured for all species over the course of the 2014 growing ***-way analyses of variance were used to assess changes in these param-eters across growing environments,as well as seasonally for each *** regression analyses were also performed to inves-tigate the influence of vapor pressure deficit(D)and leaf tempera-ture(T_(leaf))on A_(sat) and *** Findings light-saturated photosynthesis was significantly greater in ***-difolia growing in sun than in the shade(Ply in th

关键词： encroachment photosynthesis serpentine barren Schizachyrium scoparium Smilax rotundifolia Sorghastrum nutans

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Circadian rhythms in liver metabolism and disease

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Acta Pharmaceutica Sinica B 2015年第2期5卷 113-122页

作者： jessica M.Ferrell John Y.l.Chiang Department of Integrative Medical Sciences Northeast Ohio Medical University

Mounting research evidence demonstrates a significant negative impact of circadian disruption on human health. Shift work, chronic jet lag and sleep disturbances are associated with increased incidence of metabolic syndrome, and consequently result in obesity, type 2 diabetes and ***, these associations are reviewed with respect to liver metabolism and disease.

关键词： Circadian rhythm liver Metabolic syndrome Type 2 diabetes

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Using weighted blankets in an inpatient mental health hospital to decrease anxiety

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Journal of Integrative Medicine 2021年第2期19卷 129-134页

作者： Annette l.Becklund lisa Rapp-Mc Call jessica Nudo Annette l Becklund MSWLCSW&Associates LLCPO Box 3870Spring HillFL 34611USA Saint leo University Saint LeoFL 33574-6665USA

Objective:Patients who are involuntarily committed to a psychiatric facility often experience anxiety or increased anxiety in response to being placed in the institutional *** weighted blanket introduced a proactive treatment *** purpose of this study was to evaluate patients’anxiety symptoms before and after weighted blanket,compared to a group that did not use a weighted blanket to control ***:This study was conducted in an inpatient mental health facility from June 10,2019,through November 7,2019,with psychiatric patients who were not actively *** were offered the choice of weighted or unweighted blankets for a 20-minute *** treatment group was comprised of individuals who had opted to use a 14-pound weighted blanket,20-pound weighted blanket or 5-pound weighted lap *** in the comparison group were active in a wider range of *** application of the blankets,pulse rate was measured using a pulse oximeter,and anxiety was measured using the Spielberger State-Trait Anxiety Inventory shortened form(STAI:Y-6).Both measures were taken again after the intervention.A two-way mixed analysis of variance(ANOVA)was run to examine the interaction effects between time(pre/post)and group(comparison/weighted blanket).Simple main effects were then further examined for the comparison/weighted blanket groups using a repeated measures *** the weighted blanket group,additional two-way mixed ANOVA was run to determine if gender or blanket weight made a statistically significant ***:There was a statistically significant difference(Plankets(n=61)and those who did not(n=61)based on the pre/post data for both the STAI:Y-6 inventory and the patients’pulse *** results of two-way ANOVA indicated a significant interaction effect between intervention time and group(P<0.001).Repeated measures ANOVA indicated a change between pre/post for the we

关键词： Weighted blanket Anxiety Mental health

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Coordination chemistry of surface-associated ligands for solid-liquid adsorption of rare-earth elements

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Journal of Rare Earths 2023年第1期41卷 1-18页

作者： jessica l.Hovey Timothy M.Dittrich Matthew J.Allen Department of Chemistry Wayne State University5101 Cass AvenueDetroitMI48202USA Department of Civil and Environmental Engineering 5050 Anthony Wayne DriveWayne State UniversityDetroitMIl48202USA

General guidelines for the design of ligands for the enrichment of rare-earth elements by solid-liquid adsorption are described using coordination *** properties of ligands include selectivity of metal ions based on adjustment of donor atom polarizability,denticity,and the pKarange of the binding *** selectivity of solid-phase materials for the enrichment of rare-earth ions by the ligand design guidelines is outlined,with special consideration of additional variable factors including steric hindrance,saturated binding sites,variability in speciation caused by the identity of counterions and ionic strength,and size-exclusivity in ligands stemming from differences in bite angle,preo rganization of ligands,or intraligand *** review analyzes some principles of selectivity of rare-earth elements with ligands organized by donor type from examples collected from reports published between 2009 and 2021.

关键词： Chelating ligand Coordination chemistry Solid-phase material Rare-earth element Separation Solid-liquid extraction

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