1,617,332 results match your criteria north america


From forest to pharmacy: should we be depressed about a sustainable Griffonia simplicifolia (Fabaceae) seed supply chain?

J Ethnopharmacol 2021 May 12:114202. Epub 2021 May 12.

Bundesamt für Naturschutz (BfN), Konstantinstr. 110, Bonn 53179, Germany.

Ethnopharmacological Relevance: Griffonia simplicifolia D.C (Baill.) (Fabaceae) seeds are unusually high (6-20% wet weight) in 5-HTP (5-Hydroxytryptophan), a serotonin precursor widely used to treat depression. Read More

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Student Engagement in Adolescence: A Scoping Review of Longitudinal Studies 2010-2020.

J Res Adolesc 2021 Jun;31(2):256-272

University of Helsinki.

We systematically mapped and analyzed the longitudinal research on adolescent student engagement published during 2010-2020. A total of 104 studies of 104,304 adolescents met inclusion criteria. Studies were mainly conducted in North America (43%) or Europe (34%). Read More

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Gonococcal endocarditis: A rare manifestation of a common disease in the COVID-19 era.

Int J STD AIDS 2021 May 14:9564624211017425. Epub 2021 May 14.

Division of Infectious Diseases, Department of Medicine, 5229University of Wisconsin, Madison, WI, USA.

Gonococcal infections have been increasing worldwide and in the United States. Rarely, can cause disseminated disease, including endocarditis. We present a case of gonococcal endocarditis, confirmed by blood cultures and 16S rRNA sequencing on excised valvular tissue. Read More

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Transnational evaluation of the Sympathy for Violent Radicalization Scale: Measuring population attitudes toward violent radicalization in two countries.

Transcult Psychiatry 2021 May 14:13634615211000550. Epub 2021 May 14.

McGill University.

Countering violent radicalization is a priority in many countries, prompting research that assesses attitudes and beliefs about violent radicalization in the general population. The majority of violent radicalization assessments have been developed among specific populations, with limited investigation into the generalizability and cross-cultural applicability of measurement tools. A transcultural investigation raises questions about the implicit assumptions and norms that inform instrument development. Read More

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Giardia lamblia and Helicobacter pylori coinfection in gastrointestinal biopsies: A retrospective single-center analysis from Switzerland.

Ann Diagn Pathol 2021 May 10;53:151756. Epub 2021 May 10.

Medica Institute of Clinical Pathology, Hottingerstrasse 9/11, 8032 Zurich, Switzerland.

Background: The protozoan Giardia lamblia (GL) and the bacterium Helicobacter pylori (HP) are common causes of gastrointestinal disease. Coinfection is common and has been reported in studies from Africa, Europe, North America and Asia, but data for Switzerland are scarce.

Aim: To investigate GL and HP prevalence and coinfection rate in gastrointestinal biopsies from the Zurich area of Switzerland. Read More

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The association between natural environments and childhood mental health and development: A systematic review and assessment of different exposure measurements.

Int J Hyg Environ Health 2021 May 11;235:113767. Epub 2021 May 11.

Department of Forest and Conservation Sciences, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada; School of Population and Public Health, Faculty of Medicine, University of British Columbia, 2206 East Mall, Vancouver, BC, V6T 1Z3, Canada; ISGlobal, Parc de Recerca Biomèdica de Barcelona, Carrer de Dr. Aiguader, 88, 08003, Barcelona, Spain; Universitat Pompeu Fabra, Plaça de La Mercè, 10-12, 08002, Barcelona, Spain; Centro de Investigación Biomédica en Red Instituto de Salud Carlos III, Calle de Melchor Fernández Almagro, 3, 28029, Madrid, Spain.

Background: Several studies have assessed the relationship between exposure to natural environments (NEs) and childhood mental health and development. In most cases, a positive association has been found, but results are inconsistent, and the strength of association is unclear. This inconsistency may reflect the heterogeneity in measurements used to assess NE. Read More

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Genome-wide diversity in the California condor tracks its prehistoric abundance and decline.

Curr Biol 2021 May 7. Epub 2021 May 7.

Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA. Electronic address:

Due to their small population sizes, threatened and endangered species frequently suffer from a lack of genetic diversity, potentially leading to inbreeding depression and reduced adaptability. During the latter half of the twentieth century, North America's largest soaring bird, the California condor (Gymnogyps californianus; Critically Endangered), briefly went extinct in the wild. Though condors once ranged throughout North America, by 1982 only 22 individuals remained. Read More

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A systematic review of spatial habitat associations and modeling of marine fish distribution: A guide to predictors, methods, and knowledge gaps.

PLoS One 2021 14;16(5):e0251818. Epub 2021 May 14.

NOAA National Centers for Coastal Ocean Science, Beaufort, North Carolina, United States of America.

As species distribution models, and similar techniques, have emerged in marine ecology, a vast array of predictor variables have been created and diverse methodologies have been applied. Marine fish are vital food resources worldwide, yet identifying the most suitable methodology and predictors to characterize spatial habitat associations, and the subsequent distributions, often remains ambiguous. Our objectives were to identify knowledge gaps in fish guilds, identify research themes, and to determine how data sources, statistics, and predictor variables differ among fish guilds. Read More

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Maternal and paternal psychological control and adolescents' negative adjustment: A dyadic longitudinal study in three countries.

PLoS One 2021 14;16(5):e0251437. Epub 2021 May 14.

Center for Child and Family Policy, Duke University, Durham, North Carolina, United States of America.

Psychological Control (PC) interferes with autonomy-related processes in adolescence and has a negative impact on adolescents' development related to internalizing and externalizing problems. Several scholars suggested that PC can be used differently by mothers and fathers. However, these differences are still understudied and mainly grounded on maternal and/or adolescents' perspectives, leading to potentially incomplete inferences on the effects of PC. Read More

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A systematic scoping review of the methodological approaches and effects of pesticide exposure on solitary bees.

PLoS One 2021 14;16(5):e0251197. Epub 2021 May 14.

ORISE Researcher, Oak Ridge Associated Universities, Research Triangle Park, Oak Ridge, North Carolina, United States of America.

Background: Pollination services provided by solitary bees, the largest group of bees worldwide, are critical to the vitality of ecosystems and agricultural systems alike. Disconcertingly, bee populations are in decline, and while no single causative factor has been identified, pesticides are believed to play a role in downward population trends. The effects of pesticides on solitary bee species have not been previously systematically cataloged and reviewed. Read More

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Analysis of Author Gender in the Pediatric Orthopaedic Literature from 2011 to 2020.

J Pediatr Orthop 2021 May 13. Epub 2021 May 13.

Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, SC Shriner's Hospital for Children, Springfield, MA.

Introduction: Orthopaedic surgery remains a male-dominated specialty. To date there has not been a focused analysis of gender in authorship within the pediatric orthopaedic literature.

Methods: The electronic table of contents from 2011 to 2020 of 3 major pediatric orthopaedic journals [Journal of Children's Orthopedics (JCO), Journal of Pediatric Orthopedics (JPO), and Journal of Pediatric Orthopedics Part B (JPO-B)] were reviewed. Read More

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Irritant-Induced Chronic Cough Triggers: A Scoping Review and Clinical Checklist.

Am J Speech Lang Pathol 2021 May 14:1-31. Epub 2021 May 14.

Department of Speech, Language, and Hearing Sciences, Auburn University, AL.

Purpose The primary aim of this review was to identify environmental irritants known to trigger chronic cough through the life span and develop a comprehensive clinically useful irritant checklist. Method A scoping review was conducted using the Preferred Reporting Items for Systematic Review and Meta-Analysis Extension for Scoping Reviews, checklist, and explanation. English-language, full-text resources were identified through Medline, PsycINFO, SPORTDiscus, Web of Science, and ProQuest Dissertations and Theses Global. Read More

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Interobserver variability in the classification of childhood maculopapular cutaneous mastocytosis.

J Eur Acad Dermatol Venereol 2021 May 14. Epub 2021 May 14.

Hospital Virgen del Valle, Complejo Hospitalario Universitario de Toledo, Toledo, Spain.

Background: Maculopapular cutaneous mastocytosis (MPCM) in children is classified in two variants: 1) monomorphic variant, presenting with the small macules or papules typically seen in adult patients; and 2) polymorphic variant with larger lesions of variable size and shape, typically seen in children. The definition of polymorphic and monomorphic variants is mostly intuitive, and a validation of this classification has not been done.

Objective: To study interobserver variability in the classification of MPCM in two groups of observers: mastocytosis experts and general dermatologists. Read More

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Multisegmental versus monosegmental intramedullary spinal cord ependymomas: perioperative neurological functions and surgical outcomes.

Neurosurg Rev 2021 May 14. Epub 2021 May 14.

Department of Neurosurgery, Peking University Third Hospital, Peking University, Beijing, China.

Multiple factors, such as tumor size, lateralization, tumor location, accompanying syringomyelia, and regional spinal cord atrophy, may affect the resectability and clinical prognosis of intramedullary spinal cord ependymomas. However, whether long-segmental involvement of the spinal cord may impair functional outcomes remains unclear. This study was aimed to compare perioperative neurological functions and long-term surgical outcomes between multisegmental ependymomas and their monosegmental counterparts. Read More

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Evaluation of stress and anxiety caused by the coronavirus disease 2019 (COVID-19) pandemic in pediatric radiology.

Pediatr Radiol 2021 May 14. Epub 2021 May 14.

Department of Radiology, Cleveland Clinic, Cleveland, OH, USA.

Background: Work-related stress and burnout were documented to be high among pediatric radiologists prior to the coronavirus disease 2019 (COVID-19) pandemic. New challenges arose from the COVID-19 pandemic, potentially introducing new stressors and anxieties.

Objective: To evaluate potential sources of stress and anxiety for pediatric radiology faculty during the early phase of the COVID-19 pandemic. Read More

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The Use of SMS Text Messaging to Improve the Hospital-to-Community Transition in Patients With Acute Coronary Syndrome (Txt2Prevent): Results From a Pilot Randomized Controlled Trial.

JMIR Mhealth Uhealth 2021 May 14;9(5):e24530. Epub 2021 May 14.

Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada.

Background: Acute coronary syndrome (ACS) is a leading cause of hospital admission in North America. Many patients with ACS experience challenges after discharge that impact their clinical outcomes and psychosocial well-being. SMS text messaging has the potential to provide support to patients during this postdischarge period. Read More

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Nutmegs and wild nutmegs: An update on ethnomedicines, phytochemicals, pharmacology, and toxicity of the Myristicaceae species.

Phytother Res 2021 May 13. Epub 2021 May 13.

Agrotechnology and Rural Development Division, CSIR-North East Institute of Science & Technology, Jorhat, 785006, Assam, India.

Prized medicinal spice true nutmeg is obtained from Myristica fragrans Houtt. Rest species of the family Myristicaceae are known as wild nutmegs. Nutmegs and wild nutmegs are a rich reservoir of bioactive molecules and used in traditional medicines of Europe, Asia, Africa, America against madness, convulsion, cancer, skin infection, malaria, diarrhea, rheumatism, asthma, cough, cold, as stimulant, tonics, and psychotomimetic agents. Read More

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Mental Health Triggers and Protective Factors Among Arabic-Speaking Immigrants and Refugees in North America: A Scoping Review.

J Immigr Minor Health 2021 May 13. Epub 2021 May 13.

Department of Anthropology, Faculty of Social Sciences, McMaster University, CNH 527, Hamilton, ON, L8S 4L9, Canada.

Poor mental health (MH) is a substantial public health problem, affecting over 13% of the population worldwide. Arabic-speaking immigrants and refugees (ASIR) are at high risk of MH problems due to intercultural adjustment stress, racism and discrimination. This scoping review of 49 studies explored pre- and post-migration MH determinants among ASIR in North America. Read More

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A scoping review to identify and map the multidimensional domains of pain in adults with advanced liver disease.

Can J Pain 2020 Sep 15;4(1):210-224. Epub 2020 Sep 15.

Lawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, Ontario, Canada.

: Pain is a significant problem in adults living with advanced liver disease, having limited guidance available for its clinical management. While pain is considered a multidimensional experience, there have been limited reviews of the pain literature in advanced liver disease conducted with a multidimensional framework. The goal of this scoping review was to identify and map the multidimensional domains of pain in adults with advanced liver disease using the biopsychosocial model. Read More

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September 2020

Taphonomy and taxonomy of a juvenile lambeosaurine (Ornithischia: Hadrosauridae) bonebed from the late Campanian Wapiti Formation of northwestern Alberta, Canada.

PeerJ 2021 4;9:e11290. Epub 2021 May 4.

Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, New South Wales, Australia.

Hadrosaurid (duck-billed) dinosaur bonebeds are exceedingly prevalent in upper Cretaceous (Campanian-Maastrichtian) strata from the Midwest of North America (especially Alberta, Canada, and Montana, U.S.A) but are less frequently documented from more northern regions. Read More

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Gray Matter Sampling Differences Between Subdural Electrodes and Stereoelectroencephalography Electrodes.

Front Neurol 2021 27;12:669406. Epub 2021 Apr 27.

Department of Radiology, Jefferson Integrated Magnetic Resonance Imaging Center, Thomas Jefferson University, Philadelphia, PA, United States.

Stereoelectroencephalography (SEEG) has seen a recent increase in popularity in North America; however, concerns regarding the spatial sampling capabilities of SEEG remain. We aimed to quantify and compare the spatial sampling of subdural electrode (SDE) and SEEG implants. Patients with drug-resistant epilepsy who underwent invasive monitoring were included in this retrospective case-control study. Read More

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Earliest evidence of marine habitat use by mammals.

Sci Rep 2021 May 13;11(1):8846. Epub 2021 May 13.

Texas A&M Natural Resources Institute, 578 John Kimbrough Blvd. #2260, College Station, TX, 77843, USA.

Evidence for the earliest invasion of the marine realm by mammals was previously restricted to Eocene (48.6-37.8 Ma) skeletal remains. Read More

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Near-Complete Genome Sequences of Five Siciniviruses from North America.

Microbiol Resour Announc 2021 May 13;10(19). Epub 2021 May 13.

Exotic and Emerging Avian Viral Disease Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, ARS, USDA, Athens, Georgia, USA

Here, we report near-complete genome sequences of sicinivirus from U.S. poultry flocks in 2003 to 2005 and Mexico in 2019. Read More

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Effect of β-carotene supplementation to prepartum Holstein cows on colostrum quality and calf performance.

J Dairy Sci 2021 May 10. Epub 2021 May 10.

Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham 03824. Electronic address:

β-Carotene, a pro-vitamin A carotenoid, acts as an antioxidant, able to scavenge free radicals to prevent oxidative damage. It has also been shown to increase rumen microbial production in vitro. When supplemented prepartum, β-carotene increased colostral fat and protein concentrations. Read More

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Global Prevalence and Impact of Hostility, Discrimination, and Harassment in the Cardiology Workplace.

J Am Coll Cardiol 2021 May;77(19):2398-2409

Division of Cardiology, Department of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA.

Background: Discrimination and emotional and sexual harassment create a hostile work environment (HWE). The global prevalence of HWE in cardiology is unknown, as is its impact.

Objectives: This study sought to evaluate emotional harassment, discrimination, and sexual harassment experienced by cardiologists and its impact on professional satisfaction and patient interactions worldwide. Read More

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Global prevalence of chlamydial infections in birds: A systematic review and meta-analysis.

Prev Vet Med 2021 May 5;192:105370. Epub 2021 May 5.

Faculty of Veterinary Medicine, Khon Kaen University, Thailand.

Chamydia species are bacterial pathogens that can infect a wide range of animal hosts including humans. In birds, Chlamydia psittaci is a leading cause of chlamydial infections (avian chlamydiosis) and is a zoonotic pathogen causing human psittacosis. The objectives of this study were to estimate the global prevalence of chlamydial infections in birds, to assess heterogeneity of the prevalence for some particular characteristics (continents, bird orders, specimen types, and diagnostic techniques), and to determine the trend of the prevalence over time. Read More

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Cardiovascular responses to putative chemoreceptor stimulation of embryonic common snapping turtles (Chelydra serpentina) chronically incubated in hypoxia (10% O).

Comp Biochem Physiol A Mol Integr Physiol 2021 May 10:110977. Epub 2021 May 10.

Department of Biological Sciences, University of North Texas, 1155 Union Circle #310559, Denton, TX 76203, United States of America. Electronic address:

Developmental hypoxia has been shown to result in significant changes in cardiovascular development of American alligators and common snapping turtles. These include similar effects on cardiac mass and aspects of cardiovascular function. However, given the distant phylogenetic relationship between crocodilians and chelonians, we hypothesized that snapping turtles would also exhibit differences in the effects of developmental hypoxia on cardiovascular regulation. Read More

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The effectiveness of nicotine replacement therapy in light versus heavier smokers.

Nicotine Tob Res 2021 May 13. Epub 2021 May 13.

University of Toronto, Department of Pharmacology & Toxicology, Toronto, ON.

Purpose: The prevalence of light smoking has increased in North America; however, research on the effectiveness of current treatments in this sub-population of smokers is limited. We compared quit outcomes between light (1-10 cigarettes per day (CPD)) versus heavier smokers (>10 CPD) enrolled in a treatment program at their primary care clinic.

Methods: This secondary analysis analyzed 45,087 participants (light smokers (n=9,861); heavier smokers (n=35,226)) enrolled in a smoking cessation program between April 2016 and March 2020. Read More

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Detection of Yersinia ruckeri in Pacific Lamprey on the Olympic Peninsula in Washington, USA.

J Wildl Dis 2021 May 13. Epub 2021 May 13.

Washington Animal Disease Diagnostic Laboratory, Bustad Hall Room 155N, Pullman, Washington 99614-7034, USA.

Pacific lamprey (Entosphenus tridentatus) are important anadromous fish throughout their range in western North America. As conservation programs for lamprey expand, disease surveillance is becoming more prevalent. During routine surveillance, Yersinia ruckeri biotype II was isolated from Pacific lamprey. Read More

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Phenome-wide association of 1809 phenotypes and COVID-19 disease progression in the Veterans Health Administration Million Veteran Program.

PLoS One 2021 13;16(5):e0251651. Epub 2021 May 13.

Massachusetts Veterans Epidemiology Research and Information Center (MAVERIC), VA Boston Healthcare System, Boston, Massachusetts, United States of America.

Background: The risk factors associated with the stages of Coronavirus Disease-2019 (COVID-19) disease progression are not well known. We aim to identify risk factors specific to each state of COVID-19 progression from SARS-CoV-2 infection through death.

Methods And Results: We included 648,202 participants from the Veteran Affairs Million Veteran Program (2011-). Read More

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