Ultrasonic technique for the investigation of structural properties of biological fluids

1999 ◽  
Vol 105 (2) ◽  
pp. 1369-1370 ◽  
Author(s):  
Algirdas Voleišis ◽  
Rymantas J. Kažys ◽  
Liudas Mažeika ◽  
Reimondas Šliteris ◽  
Birutė Voleišienė
Keyword(s):  
Structural Properties ◽  
Biological Fluids ◽  
Ultrasonic Technique

scholarly journals Isolation of Cell-Free miRNA from Biological Fluids: Influencing Factors and Methods

Diagnostics ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 865
Author(s):  
Olga Bryzgunova ◽  
Maria Konoshenko ◽  
Ivan Zaporozhchenko ◽  
Alexey Yakovlev ◽  
Pavel Laktionov
Keyword(s):  
Clinical Research ◽  
Structural Properties ◽  
Influencing Factors ◽  
High Stability ◽  
Biological Fluids ◽  
Supramolecular Complexes ◽  
Clinical Settings ◽  
Downstream Analysis ◽  
Extracellular Environment

A vast wealth of recent research has seen attempts of using microRNA (miRNA) found in biological fluids in clinical research and medicine. One of the reasons behind this trend is the apparent their high stability of cell-free miRNA conferred by small size and packaging in supramolecular complexes. However, researchers in both basic and clinical settings often face the problem of selecting adequate methods to extract appropriate quality miRNA preparations for use in specific downstream analysis pipelines. This review outlines the variety of different methods of miRNA isolation from biofluids and examines the key determinants of their efficiency, including, but not limited to, the structural properties of miRNA and factors defining their stability in the extracellular environment.

Newborn's Preference for Faces

1996 ◽  
Vol 1 (3) ◽  
pp. 200-205 ◽  
Author(s):  
Carlo Umiltà ◽  
Francesca Simion ◽  
Eloisa Valenza
Keyword(s):  
Visual System ◽  
Structural Properties ◽  
Sensory Properties ◽  
Human Face ◽  
System Experiment ◽  
Face Experiment

Four experiments were aimed at elucidating some aspects of the preference for facelike patterns in newborns. Experiment 1 showed a preference for a stimulus whose components were located in the correct arrangement for a human face. Experiment 2 showed a preference for stimuli that had optimal sensory properties for the newborn visual system. Experiment 3 showed that babies directed their attention to a facelike pattern even when it was presented simultaneously with a non-facelike stimulus with optimal sensory properties. Experiment 4 showed the preference for facelike patterns in the temporal hemifield but not in the nasal hemifield. It was concluded that newborns' preference for facelike patterns reflects the activity of a subcortical system which is sensitive to the structural properties of the stimulus.

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