[Effects of human and rat interferons-alpha on the behavior of rats of different ages. Comparative study of the homology of amino acid sequences].
Effects of chronic intranasal administration of human and rat interferons alpha on feeding and defensive behavior of rats were studied. Natural leukocyte human interferon "Lokferon" (a mixture of alpha interferon subtypes) and recombinant rat interferon alpha of the first subtype were used in the dose of 350 ME per rat daily. In addition, using the databases NCBI and EBI, we quantitatively estimated homology of amino-acid sequences between different subtypes of human and rat interferons. Both human (mostly in young rats) and rat interferons (mostly in old rats) increased rat feeding behavior after food conditioning to an audio tone. In old (but not in young) rats, both human and rat interferons worsened the ability of time interval assessment. In young (but not old) rats, both interferon kinds improved avoidance conditioning. The degree of homology between different human and rat interferons varied from 72% to 77%. Thus, generally, the effects of rat and human alpha interferons (350 ME) on rat conditioning were similar. This may be due to high degree of homology of amino-acid sequences between the two interferons.
E V
EV
Loseva
N A
NA
Loginova
V V
VV
Nekliudov
V N
VN
Mats
O V
OV
Kurskaia
N V
NV
Pasikova
D000281:Administration, Intranasal; D000375:Aging / Q000502:physiology*; D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects / Q000502:physiology; D001522:Behavior, Animal / Q000187:drug effects / Q000502:physiology*; D003213:Conditioning, Psychological / Q000187:drug effects; D005247:Feeding Behavior / Q000187:drug effects / Q000502:physiology*; D006801:Humans; D007370:Interferon Type I / Q000494:pharmacology*; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D011994:Recombinant Proteins; D017386:Sequence Homology, Amino Acid
D007370:Interferon Type I; D011994:Recombinant Proteins