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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2016; 62(1): 16-24


A.V. Dragan1, O.A. Petrushenko1, O.P. Burlak1,2, E.A. Lukyanetz1,2

  1. Bogomoletz Institute of physiology NAS of Ukraine, Kyiv;
  2. International Center for Molecular Physiology NASU, Kyiv, Ukraine


The activity of TRPA1 and TRPV1 channels, their sensitivity to selective activators - allyl isothiocyanate (AITC) and capsaicin (Caps), especially their interaction were studied. The method of microfluorescent microscopy and Ca2+ sensitive dye fura- 2AM. Registration of changes in the concentration of intracellular Ca2+ was performed by using the ratio of fluorescence signals measured at two wavelengths (R = F1/ F2). Researches were conducted on cultured neurons of rat dorsal ganglia (DRG neurons). Application of AITC and Caps on soma of DRG neurons resulted in an increase in intracellular Ca2+. Consistent repeated Caps applications resulted in a significant reduction in the amplitude of Ca2+ transients ( desensitization of TRPV1 channels), which accounted 20,7% of initial value. Further application of selective TRPA1 channel agonist (AITC) resulted in restoration of sensitivity to capsaicin TRPV1 channels ( resensitization TRPV1 channels). Thus, we have established the presence of regulation of TRPV1 channel activity by TRPA1 channels

Keywords: TRPV1-channels; TRPA1-receptors; calcium; DRG-neurons; calcium signaling; capsaicin; allyl isothiocyanate.


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