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https://www.readbyqxmd.com/read/28521771/cancer-incidence-among-finnish-male-cobalt-production-workers-in-1969-2013-a-cohort-study
#1
Riitta Sauni, Panu Oksa, Jukka Uitti, Asko Linna, Raimo Kerttula, Eero Pukkala
BACKGROUND: There is inadequate evidence for the carcinogenicity of cobalt and cobalt compounds in humans. Consequently, the International Agency for Research on Cancer (IARC) has evaluated cobalt metal without tungsten carbide as possibly carcinogenic to humans (Group 2B). The aim of the study was to assess the risk of cancer among workers employed in a Finnish cobalt plant since the beginning of production in 1968. METHODS: The study cohort consisted of all males employed by the Finnish cobalt plant for at least a year during 1968-2004...
May 18, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28512369/-nanopesticides-light-or-dark-side-of-the-force
#2
REVIEW
Magdalena Matysiak, Marcin Kruszewski, Lucyna Kapka-Skrzypczak
Nanotechnology has been used in many branches of industry, including agriculture, where nanomaterials are used as carriers of chemical plant protection compounds, as well as active ingredients. Meanwhile, the effects of nanopesticides exposure on the human body are unknown. Due to their occupation, farmers should be particularly monitored. This paper summarizes the use of nanoparticles in agriculture, the route of potential exposure for agricultural workers and the current state of knowledge of nanopesticides toxicity to mammalian cells...
May 16, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28490760/hormonal-pleiotropy-helps-maintain-queen-signal-honesty-in-a-highly-eusocial-wasp
#3
Ricardo Caliari Oliveira, Ayrton Vollet-Neto, Cintia Akemi Oi, Jelle S van Zweden, Fabio Nascimento, Colin Sullivan Brent, Tom Wenseleers
In insect societies, both queens and workers produce chemicals that reliably signal caste membership and reproductive status. The mechanisms that help to maintain the honesty of such queen and fertility signals, however, remain poorly studied. Here we test if queen signal honesty could be based on the shared endocrine control of queen fertility and the production of specific signals. In support of this "hormonal pleiotropy" hypothesis, we find that in the common wasp, application of methoprene (a juveline hormone analogue) caused workers to acquire a queen-like cuticular hydrocarbon profile, resulting in the overproduction of known queen pheromones as well as some compounds typically linked to worker fertility...
May 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28477162/polychlorinated-biphenyls-and-their-hydroxylated-metabolites-in-the-serum-of-e-waste-dismantling-workers-from-eastern-china
#4
Shengtao Ma, Guofa Ren, Xiangying Zeng, Zhiqiang Yu, Guoying Sheng, Jiamo Fu
A number of studies have reported on the exposure of e-waste dismantling workers to significantly high concentrations of halogenated organic pollutants such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers. Such exposure can have adverse health effects. However, little information on the metabolites of these contaminants exists. In this study, we investigated PCBs levels and their hydroxylated metabolites (OH-PCB) in the serum of e-waste workers in Taizhou in eastern China. Our results indicate elevated PCB and OH-PCB levels in the serum of the workers, with medians of 443...
May 5, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28448810/associations-between-blood-btexs-concentrations-and-hematologic-parameters-among-adult-residents-of-the-u-s-gulf-states
#5
Brett T Doherty, Richard K Kwok, Matthew D Curry, Christine Ekenga, David Chambers, Dale P Sandler, Lawrence S Engel
BACKGROUND: Studies of workers exposed to benzene at average air concentrations below one part per million suggest that benzene, a known hematotoxin, causes hematopoietic damage even at low exposure levels. However, evidence of such effects outside of occupational settings and for other volatile organic compounds (VOCs) is limited. OBJECTIVE: To investigate associations between ambient exposures to five VOCs, including benzene, and hematologic parameters among adult residents of the U...
April 26, 2017: Environmental Research
https://www.readbyqxmd.com/read/28444322/fumigant-activity-of-sweet-orange-essential-oil-fractions-against-red-imported-fire-ants-hymenoptera-formicidae
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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 19, 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
#19
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
#20
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
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