Objective: The effect of seasonal variation on the occurrence of stroke remains controversial. The objective of this study was to determine whether there is a seasonal variation in the occurrence of stroke in Northern Greece.
Methods: We recorded the seasonal stroke rates over a 10 year period (from January 1997 to December 2006) in 8204 patients in Northern Greece. The findings were analysed separately for ischemic stroke (IS), intracerebral hemorrhage (ICH), subarachnoid hemorrhage (SAH) and transient ischemic attack (TIA).
Results: In patients with IS, there was a significant seasonal variation (p<0.001), with the peak incidence in spring (8.4% above average) and the lowest rate in summer (10.4% below average). There was no significant seasonal variation in the occurrence of the other stroke subtypes (ICH, SAH and TIA) when they were considered individually.
Discussion: The seasonal effect on stroke incidence needs to be defined so as to improve the provision of preventive measures.
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http://dx.doi.org/10.1179/174313208X331608 | DOI Listing |
Nat Microbiol
December 2024
Plant-Microbe Interactions, Institute of Environmental Biology, Department of Biology, Science4Life, Utrecht University, Utrecht, the Netherlands.
Potato vigour, the growth potential of seed potatoes, is a key agronomic trait that varies significantly across production fields due to factors such as genetic background and environmental conditions. Seed tuber microbiomes are thought to influence plant health and crop performance, yet the precise relationships between microbiome composition and potato vigour remain unclear. Here we conducted microbiome sequencing on seed tuber eyes and heel ends from 6 potato varieties grown in 240 fields.
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December 2024
Department of Economics College of Economics, Harvard University, Cambridge, 02138, USA.
Using a unique dataset on the performance of soccer players in China (retrieved from 632 matches involving 24 teams during the 2014 to 2016 seasons), we investigate the effect of air pollution on different performance indicators that rely on different mixtures of the physical and cognitive inputs of players. To ensure a causal interpretation, we implement an instrumental variable (IV) approach using thermal inversion as the instrument for air pollution. We found that players' performance indicators, especially those more related to cognitive factors, are more strongly influenced by air pollution.
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December 2024
Department of Ophthalmology, The Jikei University School of Medicine, Tokyo, Japan.
The surface of the eye is constantly exposed to the external environment and is affected by atmospheric conditions and air pollution, and dry eye is a typical ocular surface disease. The aim of this study is to determine whether there are seasonal differences in the number of dry eye operations in Japan and to investigate whether meteorological conditions and air pollutants are related to. The operations were examined using the National Database of Health Insurance Claims and Specific Health Checkups of Japan (NDB) database from fiscal years 2019 to 2021.
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December 2024
Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki, 036-8564, Aomori, Japan.
Radon (Rn) and thoron (Rn) were reported as the highest contributors to natural radiation received by humans. Furthermore, radon has been stated as the second-highest cause of lung cancer. The concentrations of U and Th (the parent nuclide of radon and thoron, respectively) in nature vary with geological conditions and can be enhanced by human activities.
View Article and Find Full Text PDFMar Environ Res
December 2024
Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture and Rural Affairs, Scientific Observation and Research Station of Pearl River Estuary Ecosystem of Guangdong Province, Guangdong Provincial Key Laboratory of Fishery Ecology Environment, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510300, China; National Agricultural Experimental Station for Fishery Resources and Environment Dapeng, Shenzhen 518120, China. Electronic address:
Marine zooplankton communities represent one of the most diverse and abundant species groups on earth. To investigate the ecological niche characteristics and interspecific interactions of marine zooplankton, and to elucidate their role in carbon deposition and biogeochemical cycling, we conducted a study on the zooplankton community near Taishan in the South China Sea between December 2015 and September 2016. Using niche breadth, niche overlap, the variance ratio method, chi-square tests, and linkage coefficients, we analyzed the interrelationships among the major zooplankton species.
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