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https://www.readbyqxmd.com/read/28444322/fumigant-activity-of-sweet-orange-essential-oil-fractions-against-red-imported-fire-ants-hymenoptera-formicidae
#1
Wei Hu, Ning Zhang, Hongli Chen, Balian Zhong, Aixue Yang, Fan Kuang, Zhigang Ouyang, Jiong Chun
Sweet orange oil fractions were prepared by molecular distillation of cold-pressed orange oil from sample A (Citrus sinensis (L.) 'Hamlin' from America) and sample B (Citrus sinensis Osbeck 'Newhall' from China) respectively, and their fumigant activities against medium workers of red imported fire ants (Solenopsis invicta Buren) were investigated. The volatile composition of the orange oil fractions was identified and quantified using GC-MS. Fractions from sample A (A1, A2, and A3) contained 23, 37, and 48 chemical constituents, and fractions from sample B (B1, B2, and B3) contained 18, 29, and 26 chemical constituents, respectively...
April 21, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28431005/occupational-asthma-caused-by-acrylic-compounds-from-shield-surveillance-1989-2014
#2
G I Walters, A S Robertson, V C Moore, P S Burge
Background: Acrylic monomers (acrylates), methacrylates and cyanoacrylates all cause asthma by respiratory sensitization. Occupational inhalation exposures occur across a variety of industries including health care and dental work, beauty, laboratory science, assembly and plastic moulding. Aims: To examine notifications of occupational asthma caused by acrylic compounds from a UK-based regional surveillance scheme, in order to highlight prevalent exposures and trends in presentation...
April 20, 2017: Occupational Medicine
https://www.readbyqxmd.com/read/28426518/pathophysiologic-insight-into-mesoamerican-nephropathy
#3
Magdalena Madero, Fernando E García-Arroyo, Laura-Gabriela Sánchez-Lozada
PURPOSE OF REVIEW: Mesoamerican nephropathy (MeN) is an emerging pathophysiological entity of Chronic kidney desease (CKD) not related to traditional risk factors (diabetes and hypertension) that have caused thousands of deaths in Central America, mainly in sugarcane workers. The focus of this review is to discuss the risk factors and probable mechanisms involved in the initiation and progression of this devastating disease. RECENT FINDINGS: Frequent episodes of subclinical Acute kidney injury caused by repetitive heat stress, dehydration, and strenuous work have been regarded as the main risk factors for MeN...
April 19, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28417225/comparative-proteomic-analysis-provides-insight-into-10-hydroxy-2-decenoic-acid-biosynthesis-in-honey-bee-workers
#4
Xiao-Hui Yang, Shi-Fa Yang, Rui-Ming Wang
10-Hydroxy-2-decenoic acid (10-HDA) is the major compound produced from the mandibular glands (MGs) of honey bee workers. However, little information is available on the molecular mechanisms of 10-HDA biosynthesis. In our study, based on investigating the 10-HDA secretion pattern and the morphological characteristics of MGs from honey bee workers of different ages, a comparative proteomic analysis was performed in the MGs of workers with different 10-HDA production. In total, 59 up-regulated protein species representing 45 unique proteins were identified in high 10-HDA-producing workers by 2-DE-MALDI-TOF/TOF MS...
April 17, 2017: Amino Acids
https://www.readbyqxmd.com/read/28396010/analysis-of-the-variability-of-the-pharmacokinetics-of-multiple-drugs-in-young-adult-and-elderly-subjects-and-its-implications-for-acceptable-daily-exposures-and-cleaning-validation-limits
#5
REVIEW
Anthony J Streeter, Ellen C Faria
The elderly constitute a significant, potentially sensitive, subpopulation within the general population, which must be taken into account when performing risk assessments including determining an acceptable daily exposure (ADE) for the purpose of a cleaning validation. Known differences in the pharmacokinetics of drugs between young adults (who are typically the subjects recruited into clinical trials) and the elderly are potential contributors affecting the interindividual uncertainty factor (UFH) component of the ADE calculation...
March 20, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28395344/occurrence-of-fumigants-and-hazardous-off-gassing-chemicals-in-shipping-containers-arriving-in-sweden
#6
Urban Svedberg, Gunnar Johanson
Containerized cargo shipment makes up the backbone of international trade. The principal aim of this cross-sectional study was to establish a qualitative and quantitative description of gaseous fumigants and volatile off-gassing substances facing workers tasked with entering shipping containers. A total of 372 packed and 119 empty shipping containers were sampled in six ports and two distribution centers in Sweden. Fourier-transform infrared spectrometry (FTIR) and photoionization detection (PID) were the analytical methods applied to the bulk of samples...
March 1, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28393646/-start-development-of-an-intervention-for-a-first-stabilization-and-arousal-modulation-for-highly-stressed-minor-refugees
#7
Andrea Dixius, Eva Möhler
START - Development of an Intervention for a First Stabilization and Arousal-modulation for Highly Stressed Minor Refugees This article focuses on the development of an intervention called "Stress-Traumasymptoms- Arousal-Regulation-Treatment" (START), through the process of working with refugeed minors in acute stress during the clearing process immediately on arrival in Germany. START is a short manualized structured intervention for crisis intervention and stabiliziation of children and adolescents suffering from intense stress and acute tension or desperation...
April 2017: Praxis der Kinderpsychologie und Kinderpsychiatrie
https://www.readbyqxmd.com/read/28387332/odorant-cues-linked-to-social-immunity-induce-lateralized-antenna-stimulation-in-honey-bees-apis-mellifera-l
#8
Alison McAfee, Troy F Collins, Lufiani L Madilao, Leonard J Foster
Hygienic behaviour (HB) is a social immunity trait in honey bees (Apis mellifera L.) whereby workers detect, uncap and remove unhealthy brood, improving disease resistance in the colony. This is clearly economically valuable; however, the molecular mechanism behind it is not well understood. The freeze-killed brood (FKB) assay is the conventional method of HB selection, so we compared odour profiles of FKB and live brood to find candidate HB-inducing odours. Surprisingly, we found that significantly more brood pheromone (β-ocimene) was released from FKB...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28386800/chemical-ecology-of-stingless-bees
#9
Sara Diana Leonhardt
Stingless bees (Hymenoptera, Apidae: Meliponini) represent a highly diverse group of social bees confined to the world's tropics and subtropics. They show a striking diversity of structural and behavioral adaptations and are important pollinators of tropical plants. Despite their diversity and functional importance, their ecology, and especially chemical ecology, has received relatively little attention, particularly compared to their relative the honeybee, Apis mellifera. Here, I review various aspects of the chemical ecology of stingless bees, from communication over resource allocation to defense...
April 6, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28381289/causes-consequences-and-policy-responses-to-the-migration-of-health-workers-key-findings-from-india
#10
Margaret Walton-Roberts, Vivien Runnels, S Irudaya Rajan, Atul Sood, Sreelekha Nair, Philomina Thomas, Corinne Packer, Adrian MacKenzie, Gail Tomblin Murphy, Ronald Labonté, Ivy Lynn Bourgeault
BACKGROUND: This study sought to better understand the drivers of skilled health professional migration, its consequences, and the various strategies countries have employed to mitigate its negative impacts. The study was conducted in four countries-Jamaica, India, the Philippines, and South Africa-that have historically been "sources" of health workers migrating to other countries. The aim of this paper is to present the findings from the Indian portion of the study. METHODS: Data were collected using surveys of Indian generalist and specialist physicians, nurses, midwives, dentists, pharmacists, dieticians, and other allied health therapists...
April 5, 2017: Human Resources for Health
https://www.readbyqxmd.com/read/28376835/indoor-air-pollution-and-its-association-with-poor-lung-function-microalbuminuria-and-variations-in-blood-pressure-among-kitchen-workers-in-india-a-cross-sectional-study
#11
Amarnath Singh, Chandrasekharan Nair Kesavachandran, Ritul Kamal, Vipin Bihari, Afzal Ansari, Parappurath Abdul Azeez, Prem Narain Saxena, Anil Kumar Ks, Altaf Hussain Khan
BACKGROUND: The present study is an attempt to explore the association between kitchen indoor air pollutants and physiological profiles in kitchen workers with microalbuminuria (MAU) in north India (Lucknow) and south India (Coimbatore). METHODS: The subjects comprised 145 control subjects, 233 kitchen workers from north India and 186 kitchen workers from south India. Information related to the personal and occupational history and health of the subjects at both locations were collected using a custom-made questionnaire...
April 4, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28371844/diesel-exhaust-exposure-assessment-among-tunnel-construction-workers-correlations-between-nitrogen-dioxide-respirable-elemental-carbon-and-particle-number
#12
Maria Hedmer, Aneta Wierzbicka, Huiqi Li, Maria Albin, Håkan Tinnerberg, Karin Broberg
Objectives: Occupational exposure to diesel exhaust is common due the widespread use of diesel-powered combustion engines. Diesel exhaust is chemically complex and consists of thousands of compounds present as gases and particulate matter. Both nitrogen dioxide (NO2) and elemental carbon (EC) have been used as markers for diesel exhaust exposure. Currently EC is regarded as the best surrogate of diesel exhaust. The objective was to quantify the occupational exposure to diesel exhaust in underground tunnel construction work using a multi-metric approach, and to investigate the correlations between NO2, respirable EC, respirable organic carbon (OC), respirable total carbon (TC), respirable dust (RD), and particle number...
March 29, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28362493/effect-of-major-royal-jelly-proteins-on-spatial-memory-in-aged-rats-metabolomics-analysis-in-urine
#13
Di Chen, Fang Liu, Jian-Bo Wan, Chao-Qiang Lai, Li-Rong Shen
Royal jelly (RJ) produced by worker honeybees is the sole food for the queen bee throughout her life as well as the larvae of worker bees for the first 3 days after hatching. Supplementation of RJ in the diet has been shown to increase spatial memory in rodents. However, the key constituents in RJ responsible for improvement of cognitive function are unknown. Our objective was to determine if the major royal jelly proteins (MRJPs) extracted from RJ can improve the spatial memory of aged rats. The spatial memory assay using the Morris water maze test was administered once to rats after a 14-week feeding...
April 10, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28355704/-a-trend-analysis-of-the-incidence-of-occupational-diseases-in-chongqing-china-from-2006-to-2014
#14
X C Liu, D Luo, G L Liu, J Y Zhang, H D Zhang, S Q Cheng
Objective: To investigate the incidence of occupational diseases in Chongqing, China, from 2006 to 2014, and to analyze the harm, features, and trend of occupational diseases in Chongqing. Methods: The data of new cases of occupational diseases from 2006 to 2014 were collected, and the patients with a confirmed diagnosis of occupational diseases were selected as study subjects to analyze the incidence of occupational diseases in Chongqing. Results: There were 17499 cases of occupational diseases in total in Chongqing from 2006 to 2014...
February 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28355415/exposure-to-inhalable-dust-endotoxin-and-total-volatile-organic-carbons-on-dairy-farms-using-manual-and-automated-feeding-systems
#15
Ioannis Basinas, Garvin Cronin, Victoria Hogan, Torben Sigsgaard, James Hayes, Ann Marie Coggins
Introduction: Agricultural workers tend to have high exposures to organic dusts which may induce or exacerbate respiratory disorders. Studies investigating the effect of work tasks and farm characteristics on organic dust exposures among farm workers suggest that handling of animal feed is an important exposure determinant; however, the effect of the animal feeding system has not been explored in any detail. Objectives: To measure the exposure of Irish dairy farmers to inhalable dust, endotoxin, and total volatile organic compounds (TVOCs) during parlour work and to explore whether levels of exposure to these agents depend on the applied feeding system in the farms...
January 1, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28347859/the-sensory-arrays-of-the-ant-temnothorax-rugatulus
#16
Fiorella Ramirez-Esquivel, Nicole E Leitner, Jochen Zeil, Ajay Narendra
Individual differences in response thresholds to task-related stimuli may be one mechanism driving task allocation among social insect workers. These differences may arise at various stages in the nervous system. We investigate variability in the peripheral nervous system as a simple mechanism that can introduce inter-individual differences in sensory information. In this study we describe size-dependent variation of the compound eyes and the antennae in the ant Temnothorax rugatulus. Head width in T. rugatulus varies between 0...
April 12, 2017: Arthropod Structure & Development
https://www.readbyqxmd.com/read/28337118/toxicological-risk-at-workplace-and-toxicity-as-life-cycle-assessment-impact-category-substitution-of-solvents-as-an-example
#17
Thomas Schupp, Philipp Alexander Georg, Guenter Kirstein
Substitution of hazardous substances against less hazardous ones is a central requirement of the European Chemical Regulation REACH (European Regulation 1907/2006/EC). Hazardous substances emitted from products may not only affect the worker; drift off and distribution in the environment may finally result in exposure of the general population. This potential threat to health is covered by the impact category "toxicity" in Life Cycle Assessments. In this paper, we present a case of a substitution of volatile organic compounds in a reactive varnish, and compare the "old" formulation with the "new" formulation against health risk to the worker, and concerning the Life Cycle Assessment impact category "toxicity"...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28330400/academic-responses-to-fukushima-disaster
#18
Kiyotaka Yasui, Yuko Kimura, Kenji Kamiya, Rie Miyatani, Naohiro Tsuyama, Akira Sakai, Koji Yoshida, Shunichi Yamashita, Rethy Chhem, May Abdel-Wahab, Akira Ohtsuru
Since radiation accidents, particularly nuclear disasters, are rarer than other types of disasters, a comprehensive radiation disaster medical curriculum for them is currently unavailable. The Fukushima compound disaster has urged the establishment of a new medical curriculum in preparation for any future complex disaster. The medical education will aim to aid decision making on various health risks for workers, vulnerable people, and residents addressing each phase in the disaster. Herein, we introduce 3 novel educational programs that have been initiated to provide students, professionals, and leaders with the knowledge of and skills to elude the social consequences of complex nuclear disasters...
March 2017: Asia-Pacific Journal of Public Health
https://www.readbyqxmd.com/read/28320639/exposure-to-polycyclic-aromatic-hydrocarbons-and-volatile-organic-compounds-among-recently-pregnant-rural-guatemalan-women-cooking-and-heating-with-solid-fuels
#19
John R Weinstein, Renée Asteria-Peñaloza, Anaité Diaz-Artiga, Gilberto Davila, S Katharine Hammond, Ian T Ryde, Joel N Meyer, Neal Benowitz, Lisa M Thompson
BACKGROUND: Household air pollution is a major contributor to death and disability worldwide. Over 95% of rural Guatemalan households use woodstoves for cooking or heating. Woodsmoke contains carcinogenic or fetotoxic polycyclic aromatic hydrocarbons (PAHs) and volatile organic compounds (VOCs). Increased PAHs and VOCs have been shown to increase levels of oxidative stress. OBJECTIVE: We examined PAH and VOC exposures among recently pregnant rural Guatemalan women exposed to woodsmoke and compared exposures to levels seen occupationally or among smokers...
March 10, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28319714/occupational-exposure-of-firefighters-to-polycyclic-aromatic-hydrocarbons-in-non-fire-work-environments
#20
Marta Oliveira, Klara Slezakova, Adília Fernandes, João Paulo Teixeira, Cristina Delerue-Matos, Maria do Carmo Pereira, Simone Morais
This work aims to characterize personal exposure of firefighters to polycyclic aromatic hydrocarbons (PAHs) in non-fire work environments (fire stations), and assesses the respective risks. Eighteen PAHs (16 considered by USEPA as priority pollutants, dibenzo[a,l]pyrene and benzo[j]fluoranthene) were monitored in breathing zones of workers at five Portuguese fire stations during a normal shift. The obtained levels of PAHs fulfilled all existent occupational exposure limits as well as air quality guidelines with total concentrations (ΣPAHs) in range of 46...
August 15, 2017: Science of the Total Environment
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