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https://www.readbyqxmd.com/read/28275727/extreme-warmth-and-heat-stressed-plankton-in-the-tropics-during-the-paleocene-eocene-thermal-maximum
#1
Joost Frieling, Holger Gebhardt, Matthew Huber, Olabisi A Adekeye, Samuel O Akande, Gert-Jan Reichart, Jack J Middelburg, Stefan Schouten, Appy Sluijs
Global ocean temperatures rapidly warmed by ~5°C during the Paleocene-Eocene Thermal Maximum (PETM; ~56 million years ago). Extratropical sea surface temperatures (SSTs) met or exceeded modern subtropical values. With these warm extratropical temperatures, climate models predict tropical SSTs >35°C-near upper physiological temperature limits for many organisms. However, few data are available to test these projected extreme tropical temperatures or their potential lethality. We identify the PETM in a shallow marine sedimentary section deposited in Nigeria...
March 2017: Science Advances
https://www.readbyqxmd.com/read/28250175/intertidal-oysters-reach-their-physiological-limit-in-a-future-high-co2-world
#2
Elliot Scanes, Laura M Parker, Wayne A O'Connor, Laura S Stapp, Pauline M Ross
Sessile marine molluscs living in the intertidal zone experience periods of internal acidosis when exposed to air (emersion) during low tide. Relative to other marine organisms, molluscs have been identified as vulnerable to future ocean acidification; however, paradoxically it has also been shown that molluscs exposed to high CO2 environments are more resilient compared with those molluscs naive to CO2 exposure. Two competing hypotheses were tested using a novel experimental design incorporating tidal simulations to predict the future intertidal limit of oysters in a high-CO2 world; either high-shore oysters will be more tolerant of elevated PCO2 because of their regular acidosis, or elevated PCO2  will cause high-shore oysters to reach their limit...
March 1, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28202348/assessment-of-environmental-risks-to-groundwater-ecosystems-related-to-use-of-veterinary-medicinal-products
#3
Boris Kolar, Antonio Finizio
The current EU guidelines for the environmental risk assessment of veterinary pharmaceutical products (VMPs) in groundwater (GW) suggest an approach based on the comparison between the calculated concentration in GW (PECgw) and a threshold concentration of 0.1 μg/L. The latter is the upper limit of the concentration for pesticides in groundwater in the EU. If the calculated PECgw does not exceed the threshold, then the risk is considered acceptable. It is assumed that the concentration of 0.1 μg/L is by default safe for both humans and exposed GW organisms...
February 12, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28177146/precarity-in-late-life-rethinking-dementia-as-a-frailed-old-age
#4
Amanda Grenier, Liz Lloyd, Chris Phillipson
Approaches to ageing that are organised around productivity, success, and active late life have contributed to views of dementia as an unsuccessful, failed or 'frailed' old age. Operating through dominant frameworks, socio-cultural constructs and organisational practices, the 'frailties' of the body and mind are often used to mark the boundaries of health and illness in late life, and shape responses accordingly. Our concern is that both the taken for granted and the 'imagined' can further marginalise persons who occupy the locations of dementia and disablement...
February 2017: Sociology of Health & Illness
https://www.readbyqxmd.com/read/28169993/the-evolving-genomic-landscape-of-urothelial-carcinoma
#5
REVIEW
Alexander P Glaser, Damiano Fantini, Ali Shilatifard, Edward M Schaeffer, Joshua J Meeks
Survival of patients with urothelial carcinoma (including bladder cancer and upper tract urothelial carcinoma) is limited by our current approaches to staging, surgery, and chemotherapy. Large-scale, next-generation sequencing collaborations, such as The Cancer Genome Atlas, have already identified drivers and vulnerabilities of urothelial carcinoma. This disease has a high degree of mutational heterogeneity and a high frequency of somatic mutations compared with other solid tumours, potentially resulting in an increased neoantigen burden...
February 7, 2017: Nature Reviews. Urology
https://www.readbyqxmd.com/read/28166939/thermal-tolerance-and-preference-of-exploited-turbinid-snails-near-their-range-limit-in-a-global-warming-hotspot
#6
Roslizawati Ab Lah, Kirsten Benkendorff, Daniel Bucher
Predicted global climate change has prompted numerous studies of thermal tolerances of marine species. The upper thermal tolerance is unknown for most marine species, but will determine their vulnerability to ocean warming. Gastropods in the family Turbinidae are widely harvested for human consumption. To investigate the responses of turbinid snails to future conditions we determined critical thermal maxima (CTMax) and preferred temperatures of Turbo militaris and Lunella undulata from the tropical-temperate overlap region of northern New South Wales, on the Australian east coast...
February 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28129431/circumpolar-analysis-of-the-ad%C3%A3-lie-penguin-reveals-the-importance-of-environmental-variability-in-phenological-mismatch
#7
Casey Youngflesh, Stephanie Jenouvrier, Yun Li, Rubao Ji, David G Ainley, Grant Ballard, Christophe Barbraud, Karine Delord, Katie M Dugger, Louise M Emmerson, William R Fraser, Jefferson T Hinke, Phil O'B Lyver, Silvia Olmastroni, Colin J Southwell, Susan G Trivelpiece, Wayne Z Trivelpiece, Heather J Lynch
Evidence of climate-change-driven shifts in plant and animal phenology have raised concerns that certain trophic interactions may be increasingly mismatched in time, resulting in declines in reproductive success. Given the constraints imposed by extreme seasonality at high latitudes and the rapid shifts in phenology seen in the Arctic, we would also expect Antarctic species to be highly vulnerable to climate-change-driven phenological mismatches with their environment. However, few studies have assessed the impacts of phenological change in Antarctica...
April 2017: Ecology
https://www.readbyqxmd.com/read/28051123/model-fit-versus-biological-relevance-evaluating-photosynthesis-temperature-models-for-three-tropical-seagrass-species
#8
Matthew P Adams, Catherine J Collier, Sven Uthicke, Yan X Ow, Lucas Langlois, Katherine R O'Brien
When several models can describe a biological process, the equation that best fits the data is typically considered the best. However, models are most useful when they also possess biologically-meaningful parameters. In particular, model parameters should be stable, physically interpretable, and transferable to other contexts, e.g. for direct indication of system state, or usage in other model types. As an example of implementing these recommended requirements for model parameters, we evaluated twelve published empirical models for temperature-dependent tropical seagrass photosynthesis, based on two criteria: (1) goodness of fit, and (2) how easily biologically-meaningful parameters can be obtained...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28012400/blood-cadmium-concentrations-and-environmental-exposure-sources-in-newcomer-south-and-east-asian-women-in-the-greater-toronto-area-canada
#9
C L S Wiseman, A Parnia, D Chakravartty, J Archbold, N Zawar, R Copes, D C Cole
BACKGROUND: Immigrant women are often identified as being particularly vulnerable to environmental exposures and health effects. The availability of biomonitoring data on newcomers is limited, thus, presenting a challenge to public health practitioners in the identification of priorities for intervention. OBJECTIVES: In fulfillment of data needs, the purpose of this study was to characterize blood concentrations of cadmium (Cd) among newcomer women of reproductive age (19-45 years of age) living in the Greater Toronto Area (GTA), Canada and to assess potential sources of environmental exposures...
April 2017: Environmental Research
https://www.readbyqxmd.com/read/27902648/incidence-and-burden-of-pertussis-among-infants-less-than-1-year-of-age
#10
Cristina Masseria, Carolyn K Martin, Girishanthy Krishnarajah, Laura K Becker, Ami Buikema, Tina Q Tan
BACKGROUND: Infant-specific pertussis data, especially among neonates, are limited and variable. This study (NCT01890850) provides overall and age-specific pertussis incidence and associated health care utilization and costs among commercially insured infants in the US. METHODS: Nearly 1.2 million infants born from 2005 to 2010 with commercial health plan coverage were followed during their first 12 months of life. Pertussis cases were identified from medical claims (International Classification of Diseases, 9th revision, Clinical Modification code: 033...
March 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27896796/development-and-validation-of-a-frailty-index-in-the-longitudinal-aging-study-amsterdam
#11
Emiel O Hoogendijk, Olga Theou, Kenneth Rockwood, Bregje D Onwuteaka-Philipsen, Dorly J H Deeg, Martijn Huisman
BACKGROUND: Frailty is a state of increased vulnerability to adverse outcomes. The frailty index (FI), defined by the deficit accumulation approach, is a sensitive instrument to measure levels of frailty, and therefore important for longitudinal studies of aging. AIMS: To develop an FI in the Longitudinal Aging Study Amsterdam (LASA), and to examine the predictive validity of this FI for 19-year mortality. METHODS: LASA is an ongoing study among Dutch older adults, based on a nationally representative sample...
November 28, 2016: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/27832107/the-financial-burden-of-non-communicable-chronic-diseases-in-rural-nigeria-wealth-and-gender-heterogeneity-in-health-care-utilization-and-health-expenditures
#12
Wendy Janssens, Jann Goedecke, Godelieve J de Bree, Sunday A Aderibigbe, Tanimola M Akande, Alice Mesnard
OBJECTIVES: Better insights into health care utilization and out-of-pocket expenditures for non-communicable chronic diseases (NCCD) are needed to develop accessible health care and limit the increasing financial burden of NCCDs in Sub-Saharan Africa. METHODS: A household survey was conducted in rural Kwara State, Nigeria, among 5,761 individuals. Data were obtained using biomedical and socio-economic questionnaires. Health care utilization, NCCD-related health expenditures and distances to health care providers were compared by sex and by wealth quintile, and a Heckman regression model was used to estimate health expenditures taking selection bias in health care utilization into account...
2016: PloS One
https://www.readbyqxmd.com/read/27821743/coastal-sea-level-rise-with-warming-above-2-%C3%A2-c
#13
Svetlana Jevrejeva, Luke P Jackson, Riccardo E M Riva, Aslak Grinsted, John C Moore
Two degrees of global warming above the preindustrial level is widely suggested as an appropriate threshold beyond which climate change risks become unacceptably high. This "2 °C" threshold is likely to be reached between 2040 and 2050 for both Representative Concentration Pathway (RCP) 8.5 and 4.5. Resulting sea level rises will not be globally uniform, due to ocean dynamical processes and changes in gravity associated with water mass redistribution. Here we provide probabilistic sea level rise projections for the global coastline with warming above the 2 °C goal...
November 22, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27718513/effects-of-ocean-acidification-increase-embryonic-sensitivity-to-thermal-extremes-in-atlantic-cod-gadus-morhua
#14
Flemming T Dahlke, Elettra Leo, Felix C Mark, Hans-Otto Pörtner, Ulf Bickmeyer, Stephan Frickenhaus, Daniela Storch
Thermal tolerance windows serve as a powerful tool for estimating the vulnerability of marine species and their life stages to increasing temperature means and extremes. However, it remains uncertain to which extent additional drivers, such as ocean acidification, modify organismal responses to temperature. This study investigated the effects of CO2 -driven ocean acidification on embryonic thermal sensitivity and performance in Atlantic cod, Gadus morhua, from the Kattegat. Fertilized eggs were exposed to factorial combinations of two PCO2 conditions (400 μatm vs...
October 8, 2016: Global Change Biology
https://www.readbyqxmd.com/read/27534632/consequences-of-iodine-deficiency-and-excess-in-pregnant-women-an-overview-of-current-knowns-and-unknowns
#15
REVIEW
Elizabeth N Pearce, John H Lazarus, Rodrigo Moreno-Reyes, Michael B Zimmermann
Severe iodine deficiency during development results in maternal and fetal hypothyroidism and associated serious adverse health effects, including cretinism and growth retardation. Universal salt iodization is the first-line strategy for the elimination of severe iodine deficiency. Iodine supplementation is recommended for vulnerable groups in severely iodine-deficient regions where salt iodization is infeasible or insufficient. A recent clinical trial has informed best practices for iodine supplementation of severely iodine-deficient lactating mothers...
September 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27514390/the-iodine-status-of-queensland-preschool-children-after-the-introduction-of-mandatory-iodine-fortification-in-bread-an-exploratory-study-using-a-convenience-sample
#16
A J Samidurai, R S Ware, P S W Davies
Introduction Appropriate dietary iodine is essential for thyroid hormone synthesis, especially in young children. Following an iodine fortification in bread initiative, approximately 6 % of Australian preschool children were expected to have an excessive iodine status. The aim of this study was to document the current iodine status of preschool children using urinary iodine concentration (UIC) as a biomarker of iodine intake. Methods A convenience sample of fifty-one preschool children, aged 2-3 years, were recruited from south east Queensland...
August 11, 2016: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/27461910/deep-water-feeding-and-behavioral-plasticity-in-manta-birostris-revealed-by-archival-tags-and-submersible-observations
#17
Joshua D Stewart, Edgar Mauricio Hoyos-Padilla, Katherine R Kumli, Robert D Rubin
Foraging drives many fundamental aspects of ecology, and an understanding of foraging behavior aids in the conservation of threatened species by identifying critical habitats and spatial patterns relevant to management. The world's largest ray, the oceanic manta (Manta birostris) is poorly studied and threatened globally by targeted fisheries and incidental capture. Very little information is available on the natural history, ecology and behavior of the species, complicating management efforts. This study provides the first data on the diving behavior of the species based on data returned from six tagged individuals, and an opportunistic observation from a submersible of a manta foraging at depth...
October 2016: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/27293744/effects-of-salinity-on-upstream-migrating-spawning-sea-lamprey-petromyzon-marinus
#18
D Ferreira-Martins, J Coimbra, C Antunes, J M Wilson
The sea lamprey, Petromyzon marinus, is an anadromous, semelparous species that is vulnerable to endangered in parts of its native range due in part to loss of spawning habitat because of man-made barriers. The ability of lampreys to return to the ocean or estuary and search out alternative spawning river systems would be limited by their osmoregulatory ability in seawater. A reduction in tolerance to salinity has been documented in migrants, although the underlying mechanisms have not been characterized. We examined the capacity for marine osmoregulation in upstream spawning migrants by characterizing the physiological effects of salinity challenge from a molecular perspective...
2016: Conservation Physiology
https://www.readbyqxmd.com/read/27264096/prevalence-of-inadequate-nutrient-intake-in-japanese-community-dwelling-older-adults-who-live-alone
#19
Miho Nozue, Midori Ishikawa, Yukari Takemi, Kaoru Kusama, Yoshiharu Fukuda, Tetsuji Yokoyama, Tomoki Nakaya, Nobuo Nishi, Kaori Yoshiba, Nobuko Murayama
Dietary assessment of community-dwelling Japanese older adults who live alone using Dietary Reference Intakes (DRIs) is limited. The present study aimed to estimate the prevalence of inadequate nutrient intake among Japanese community-dwelling older adults by sex and young-old and old-old population groups to identify the most vulnerable groups that need support. A cross-sectional survey was conducted from October 2012 to October 2013 with community-dwelling adults aged 65 y or older who lived alone. Participants were drawn from six cities in four Japanese prefectures...
2016: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/27126556/integration-of-oral-health-into-the-well-child-visit-at-federally-qualified-health-centers-study-of-6-clinics-august-2014-march-2015
#20
Judith Bernstein, Christina Gebel, Clemencia Vargas, Paul Geltman, Ashley Walter, Raul I Garcia, Norman Tinanoff
INTRODUCTION: Early childhood caries, the most common chronic childhood disease, affects primary dentition and can impair eating, sleeping, and school performance. The disease is most prevalent among vulnerable populations with limited access to pediatric dental services. These same children generally receive well-child care at federally qualified health centers. The objective of this study was to identify facilitators and barriers to the integration of oral health into pediatric primary care at health centers to improve problem recognition, delivery of preventive measures, and referral to a dentist...
April 28, 2016: Preventing Chronic Disease
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