Active Anion Delivery by Self-Propelled Microswimmers

ACS Nano ◽  
2020 ◽  
Vol 14 (3) ◽  
pp. 3434-3441 ◽  
Author(s):  
Seyyed Mohsen Beladi-Mousavi ◽  
Jonas Klein ◽  
Bahareh Khezri ◽  
Lorenz Walder ◽  
Martin Pumera
Keyword(s):  
Active Anion

A Highly Active Anion-Selective Aminocyclodextrin Ion Channel

2005 ◽  
Vol 117 (46) ◽  
pp. 7756-7759 ◽  
Author(s):  
Nandita Madhavan ◽  
Erin C. Robert ◽  
Mary S. Gin
Keyword(s):  
Ion Channel ◽  
Highly Active ◽  
Active Anion

Multi-Ferrocene-Containing Silanols as Redox-Active Anion Receptors

2016 ◽  
Vol 35 (20) ◽  
pp. 3507-3519 ◽  
Author(s):  
Sonia Bruña ◽  
Alberto F. Garrido-Castro ◽  
Josefina Perles ◽  
M. Merced Montero-Campillo ◽  
Otilia Mó ◽  
...  
Keyword(s):  
Anion Receptors ◽  
Redox Active ◽  
Active Anion

THE EFFECTS OF OPTICALLY INACTIVE IONS ON THE ROTATORY DISPERSION OF ASYMMETRIC COMPLEX IONS

1961 ◽  
Vol 39 (11) ◽  
pp. 2360-2370 ◽  
Author(s):  
Marvin J. Albinak ◽  
Dinesh C. Bhatnagar ◽  
Stanley Kirschner ◽  
Anthony J. Sonnessa
Keyword(s):  
Water Solution ◽  
Inorganic Compounds ◽  
Optically Active ◽  
Optical Rotatory Dispersion ◽  
Rotatory Dispersion ◽  
Optical Rotatory ◽  
Complex Ions ◽  
Ionic Charge ◽  
Sodium Potassium ◽  
Active Anion

Considerable interest in the optical rotatory dispersion of asymmetric organic and inorganic compounds and its application to the elucidation of their structures has arisen in recent years. In order to study the effects of optically inactive ions on the rotatory dispersion of asymmetric complex ions, a series of salts was prepared of two active cations: levo cis-oxalato-bis(ethylenediamine)cobalt(III) and levo tris(ethylenediamine)chromium(III). Salts prepared included the fluoride, chloride, bromide, iodide, tetrafluoroborate, perchlorate, sulphate, and phosphate. In order to study this effect on an optically active anion, the lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, and barium salts of dextro and levo tris(oxalato)rhodate(III) were also prepared. Rotatory dispersion curves and absorption spectra were obtained for all salts in water solution. A comparison of the curves within a series showed definite trends in changes of wavelength and intensity of maxima of rotation and absorption with changes in both the ionic charge/size ratio (ionic potential) and polarizability of the optically inactive ions.

scholarly journals Uptake of Potassium and Sodium by Seedlings of Sinapis Alba

1966 ◽  
Vol 19 (2) ◽  
pp. 257 ◽  
Author(s):  
MG Pitman
Keyword(s):  
Plant Growth ◽  
General Model ◽  
Cell Walls ◽  
Sinapis Alba ◽  
Anion Transport ◽  
Sodium Uptake ◽  
Lower Ratio ◽  
Total Potassium ◽  
Different Levels ◽  
Active Anion

Seedlings of Sinapis alba (mustard) have a lower potassium selectivity than those of barley, as shown by the lower ratio of potassium to sodium in the shoots of plants grown on the same solution. The ratio in the shoots is usually lower than in the roots, whereas in barley it is higher. In spite of this difference in selectivity, the uptake of potassium and sodium by mustard has much in common with that by barley. The total potassium and sodium uptake to the shoot is independent of the ratio in the solution; the ratio of potassium to sodium in the shoot is proportional to that in the roots, but not to that in solution; and potassium selectivity can be reduced by transpiration. Thus it appears that the same general model for ion uptake can be used for both plants, although they have different levels of selectivity. In this model it is suggested that total potassium and sodium uptake is controlled by an active anion transport coupled with plant growth by means of metabolism, but selectivity is determined during movement of ions into the stele through cytoplasm and cell walls.

A Pore-Forming Tripeptide as an Extraordinarily Active Anion Channel

2019 ◽  
Vol 21 (12) ◽  
pp. 4826-4830 ◽  
Author(s):  
Fei Zeng ◽  
Fang Liu ◽  
Lin Yuan ◽  
Shaoyuan Zhou ◽  
Jie Shen ◽  
...  
Keyword(s):  
Anion Channel ◽  
Active Anion

scholarly journals Fluorinated synthetic anion carriers: experimental and computational insights into transmembrane chloride transport

2019 ◽  
Vol 10 (7) ◽  
pp. 1976-1985 ◽  
Author(s):  
Michael J. Spooner ◽  
Hongyu Li ◽  
Igor Marques ◽  
Pedro M. R. Costa ◽  
Xin Wu ◽  
...  
Keyword(s):  
Lipid Bilayers ◽  
Cell Membranes ◽  
Chloride Transport ◽  
Anion Transporters ◽  
Highly Active ◽  
Active Anion

A series of fluorinated tripodal tris-thioureas function as highly active anion transporters across lipid bilayers and cell membranes.

Phorbol ester stimulation of active anion secretion in intestine

1985 ◽  
Vol 249 (3) ◽  
pp. C356-C361 ◽  
Author(s):  
E. B. Chang ◽  
N. S. Wang ◽  
M. C. Rao
Keyword(s):  
Phorbol Ester ◽  
Phorbol Esters ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Bathing Medium ◽  
Anion Secretion ◽  
Kinase C ◽  
Active Anion ◽  
Rabbit Tissues ◽  
Stimulation Of

Phorbol 12,13-dibutyrate (PDB) stimulates electrogenic anion secretion in rabbit and chicken distal ileum. The 50% effective dose in each case was 15 nM, and the maximal short-circuit current (Isc) responses seen at 10(-6) M were 20 and 140 microA/cm2, respectively. Isc was also stimulated by the diacylglycerol 1-oleoyl-2-acetyl glycerol (10(-5) M) but not by the inactive phorbol ester analogue 4 alpha-phorbol 12,13-didecanoate. Removal of Ca from the serosal bathing medium and pretreatment of tissues with atropine (10(-6) M) or tetrodotoxin (2 X 10(-7) M) did not affect PDB-stimulated responses. PDB also did not alter basal intracellular free Ca levels in isolated chicken enterocytes loaded with quin 2 or basal adenosine 3',5'-cyclic monophosphate levels in intact tissues from rabbit and chicken. In the presence of PDB, Ca- and phospholipid-dependent phosphorylation of several proteins in particulate and soluble fractions from isolated chicken enterocytes were seen. Pretreatment of chicken and rabbit tissues with indomethacin or mepacrine inhibited the Isc responses to PDB and carbamylcholine, suggesting a role for prostaglandins. These results suggest that electrogenic anion secretion stimulated by phorbol esters and diacylglycerol may be mediated by activation of protein kinase C.

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