A.M. EREMEEV¹, I.I. SHAYKHUTDINOV², A.A. EREMEEV¹, A.A. SHULMAN²

¹Kazan (Volga Region) Federal University, 18 Kremlevskaya St., Kazan, Russian Federation 420008 

²Republican Clinical Hospital of the MH of RT, 138 Orenburgskiy Trakt, Kazan, Russian Federation, 420064

Eremeev A.M. — Cand. Biol. Sc., Associate Professor of the Department of Human and Animal Physiology of the Institute of Fundamental Medicine and Biology, tel. (843) 233-78-15, e-mail: aeremeev@kpfu.ru

Shaikhutdinov I.I. — Cand. Med. Sc., Chief specialist, tel. (843) 237-34-51, e-mail: rkb_nauka@rambler.ru

Eremeev A.A. — Cand. Biol. Sc., Associate Professor of the Department of Human and Animal Physiology of the Institute of Fundamental Medicine and Biology, tel. (843) 233-78-15, e-mail: 2anton.eremeev@mail.ru

Shulman A.A. — Senior Researcher of the Research Department, tel. (843) 237-35-23, e-mail: rkb_nauka@rambler.ru

In our experiments 28 healthy man and 49 patients with diagnosis of acute appendicitis were participated. Using monosynaptic reflex excitability test was studied the activity of medial gastrocnemius and soleus muscles motorneurons. It was shown that in healthy man reflex excitability of spinal motoneurons symmetrical motor centers did not differ. The reflex excitability of motor neurons of medial gastrocnemius and soleus muscles during acute appendicitis was reduced. Therefore, our experimental results suggest, that visceral nociceptive afferentation can modulate the reflex excitability of spinal motoneurons symmetrical motor centers of the medial gastrocnemius and soleus muscles.

Key words: motor neurons, reflex irritability, visceral nociception, H- and M-responses.

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