Filtered By:
Specialty: Biology
This page shows you your search results in order of date. This is page number 4.
Order by Relevance | Date
Total 656 results found since Jan 2013.
Parameters of Ionic and Acid-Base Balance during Assist Circulation with a LVAD Disc Pump
In chronic experiments on calves, the effect of the left-ventricular assist device (LVAD) technique by using a disc pump on the indicators of ionic and acid-base homeostasis. At blood velocity of 20% from the total volume, a trend towards an increase in K+ concentration and a slight decrease in the concentration of Na+, pH, and standard base excess in animal plasma were observed. If the blood velocity increased up to 90%, the indicators of ionic and acid-base homeostasis returned to their baseline values. In parallel, stroke volume and cardiac output as well as BP at the outlet of the heart and inside it and HR increased s...
Source: Bulletin of Experimental Biology and Medicine - July 18, 2022 Category: Biology Source Type: research
Daily variation in time-trial sporting performance: A systematic review
Chronobiol Int. 2022 Jul 11:1-16. doi: 10.1080/07420528.2022.2090373. Online ahead of print.ABSTRACTFew functional measures related to time-trial display diurnal variation. The diversity of tests/protocols used to assess time-trial performance on diurnal effects and the lack of a standardised approach hinder agreement in the literature. Therefore, the aims of the present study were to investigate and systematically review the evidence relating to time-of-day differences in time-trial measures and to examine the main aspects related to research design important for studies of a chronobiological nature. The entire content of...
Source: Chronobiology International - July 11, 2022 Category: Biology Authors: Tulasiram Bommasamudram Aishwarya Ravindrakumar Evdokia Varamenti David Tod Ben J Edwards Irene G Peter Samuel A Pullinger Source Type: research
Resolution of inflammation is disturbed in acute ischemic stroke with diabetes mellitus and rescued by resolvin D2 treatment
CONCLUSIONS: Our data demonstrate resolution of inflammation is impaired by DM in AIS patients, implicating a novel mechanism of un-resolved inflammation in DM-related AIS. Furthermore, RvD2 promotes inflammation resolution in macrophages/microglia and protects DM-related AIS, and may thus serve as a novel therapeutic target.PMID:35750271 | DOI:10.1016/j.freeradbiomed.2022.06.231
Source: Free Radical Biology and Medicine - June 24, 2022 Category: Biology Authors: Xin Tang Lan Liu Zhijuan Miao Jiawei Zhang Xiaolong Cai Bing-Qiao Zhao Gefei Chen Marianne Schultzberg Yuwu Zhao Xiuzhe Wang Source Type: research
Microembolic Signals in Arteries of the Base of the Brain after Ischemic Stroke
Embolic strokes make up a significant proportion of acute cerebrovascular accidents. Doppler blood flow monitoring with microembolodetection allows suggesting the embolic nature of cerebral infarction. The aim of this study was to identify factors associated with the presence of microembolic signals in patients with ischemic stroke. The study included 515 patients, microembolic signals were detected in 48 (9.3%) of them. According to multispiral CT angiography, significant differences in patients with and without microembolic signals were found for wall thickness of both common carotid arteries and for left internal caroti...
Source: Bulletin of Experimental Biology and Medicine - June 23, 2022 Category: Biology Source Type: research
Sex and race define the effects of adverse childhood experiences on self-reported BMI and metabolic health biomarkers
ConclusionsBMI is strongly associated with cumulative ACEs in women regardless the race, while waist circumference is strongly associated with ACEs in Black individuals, which combined with reduced BMI may indicate increased central adiposity in Black men. Our study suggests that sex and race influence the contribution of certain ACEs to impair metabolic health.
Source: Biology of Sex Differences - June 15, 2022 Category: Biology Source Type: research
The role of glutathione peroxidase-1 in health and disease
Free Radic Biol Med. 2022 Jun 9:S0891-5849(22)00224-6. doi: 10.1016/j.freeradbiomed.2022.06.004. Online ahead of print.ABSTRACTGlutathione peroxidase 1 (GPx1) is an important cellular antioxidant enzyme that is found in the cytoplasm and mitochondria of mammalian cells. Like most selenoenzymes, it has a single redox-sensitive selenocysteine amino acid that is important for the enzymatic reduction of hydrogen peroxide and soluble lipid hydroperoxides. Glutathione provides the source of reducing equivalents for its function. As an antioxidant enzyme, GPx1 modulates the balance between necessary and harmful levels of reactive...
Source: Free Radical Biology and Medicine - June 12, 2022 Category: Biology Authors: Diane E Handy Joseph Loscalzo Source Type: research
Comparison of Serum Selenium Levels Between Patients with Newly Diagnosed Atrial Fibrillation and Normal Controls
Biol Trace Elem Res. 2022 May 9. doi: 10.1007/s12011-022-03281-9. Online ahead of print.ABSTRACTAtrial fibrillation (AF) is the most common sustained dysrhythmia in the elderly population. It is estimated to affect more than 30 million people worldwide. AF occurs when abnormal electrical impulses start to activate in the atria and override the heart's natural pacemaker, which can no longer control the heart's rhythm. Since atrial contractility is impaired in AF, blood flow in the atria becomes stasis over time and causes thrombus formation. This thrombus causes the risk of embolism and causes complications such as stroke. ...
Source: Biological Trace Element Research - May 8, 2022 Category: Biology Authors: Isa Ardahanli Halil Ibrahim Ozkan Source Type: research
