Assessment of the muscular strength of the global handgrip and physical activity in patients treated with renal replacement therapy (RRT) by hemodialysis

Introduction Chronic Kidney Disease (CKD) is a social problem. Hemodialysis is the most common method of renal replacement therapy. At the beginning of hemodialysis treatment, physical activity is reduced by 50-60%. The aim of the study was to compare physical activity, handgrip strength and selected anthropometric parameters, and to assess the relationship between handgrip strength, selected anthropometric parameters and the level of physical activity. Material and methods The study included 30 patients aged 65.92 ± 14.65 treated by hemodialysis. The study consisted of patients completing a proprietary survey questionnaire, assessing physical activity using the International Physical Activity Questionnaire (IPAQ), handgrip strength, and performing selected anthropometric measurements. The examinations were performed at baseline (E0) and after three months of hemodialysis (E3) treatment and the results were compared. Results There were no significant differences in the study group for physical activity and global handgrip strength at baseline and after three months of the study. There was no statistically significant differences beetwen physical activity and handgrip strength in study and control group. Conclusions Patients treated with renal replacement present less physical activity compared to people with normal kidney function. The BMI value and level of physical activity does not affect the handgrip strength in hemodialysis patients

Wpływ temperatury na odległość reakcji i uczenie się poruszania w przestrzeni przez rybę planktonożerną

final_authorbefore_publicationLink archiwalny https://depotuw.ceon.pl/handle/item/485

Chapter 7. Effects of Nanoplastics on Aquatic Organisms

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The short-term effects of planktivorous fish foraging in the presence of artificial light at night on lake zooplankton

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Daphnia depth selection in gradients of light intensity from different artificial sources : an evolutionary trap?

66FINAL_PUBLISHED4AT_PUBLICATIONŚrodki finansowe przyznane na realizację projektu w zakresie badań naukowych lub prac rozwojowyc

The effects of temperature on the proxies of visual detection of Danio rerio larvae: observations from the optic tectum

97Środki finansowe przyznane na realizację projektu w zakresie badań naukowych lub prac rozwojowyc

Exploring the Role of Melatonin in Meditation on Cardiovascular Health

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Asymmetry in the thermal sensitivity of predator and prey performance may explain T-S and Bergmann’s rules in zooplankton

Abstract Numerous studies have demonstrated an inverse correlation between ambient temperature and body size in various ectotherms. This pattern could be explained by the greater temperature effect on the predator’s foraging rate and, in turn, on the mortality rate in comparison to the birth rate in prey populations. While a number of studies have revealed that the latter effect is close to the one anticipated by the Q10 = 2 assumption, the hypothesis would be confirmed if the effect of temperature on the foraging rate of the predator was greater than Q10 = 2. To test this hypothesis, we compared the capture rate and SMR of two fish species (rudd and Malabar danio) and several parameters characterising the mobility of the fish and their planktonic prey (Daphnia) at different temperatures. Although the Q10 for SMR was only around 2, the capture rate increased with rising temperatures much more than expected from the Q10 = 2 assumption, which confirmed our hypothesis. The most likely explanation seems to be a much greater increase of mobility and, in turn, reaction field volume of the fish than of its planktonic prey at elevated temperatures, which improves its attack rate more than predicted by the Q10 = 2 assumption.</jats:p

Emerging role of exosomes in hematological malignancies

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The effects of temperature on the proxies of visual detection of <i>Danio rerio</i> larvae: observations from the optic tectum

ABSTRACT Numerous studies have indicated that temperature improves the visual capabilities of different ectotherms, including a variety of fish species. However, none of these studies has directly tested whether elevated temperature extends the visual detection distance – the distance from which a visual stimulus is detected. To test this hypothesis, we investigated the effect of temperature on the visual detection distance of zebrafish (Danio rerio) larvae by measuring the largest distance from a moving target that induced a neural response in the optic tectum. We applied advanced methods of functional calcium imaging such as selective plane illumination microscopy in combination with a miniature OLED screen. The screen displayed an artificial, mobile prey, appearing in the visual field of the larvae. We performed experiments in three temperature treatments (18, 23 and 28°C) on transgenic fish expressing a fluorescent probe (GCaMP5G) that changes intensity in response to altered Ca2+ concentrations in the nerves in the optic tectum. Based on the obtained data, we also measured three additional parameters of the neural response in the optic tectum, each being a proxy of sensitivity to changes in the stimulus movement. We did not confirm our hypothesis, since the visual detection distance shortened as the temperature increased. Moreover, all of the three additional parameters indicated a negative effect of the temperature on the speed of the neural response to the stimuli. However, the obtained results could be explained not only by worse visual capabilities at the elevated temperature, but also by the differences in the visual field and in turn, the retinotopic location of the visual stimulus between the temperature treatments, since the stimulus in the experiments moved horizontally rather than forward and backward from the fish's eye.</jats:p