EFFECT OF FMRFAMIDE-LIKE PEPTIDES ON THE PHARYNGEAL MUSCLE OF NEMATODES
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Abstract and keywords
Abstract (English):
FMRFamide-like peptides play an important physiological role in the enteric nervous system of nematodes. This is confirmed by immunocytochemical data on the presence and localization of neuropeptides in the pharynx of parasitic nematode Ascaris suum; identification of flp-gene in free-living nematode Caenorhabditis elegans expressing in pharyngeal neurons of the nervous system and encoding a number of FMRFamide-like neuropeptides; high sensitivity of the radial muscle of the pharynx nematodes towards a variety of FMRFamide-like neuropeptides isolated from the nematode tissues. This review is devoted to a comparative analysis of data on the effects of some relatively short FMRFamide-like neuropeptides isolated from the nematode tissues, on pharyngeal pumping behavior in parasitic and free-living nematodes. The question about the possible use of some neuropeptides as potential anthelmintics inhibiting or completely turning off the work of the pharyngeal pump in parasitic nematodes is being discussed.

Keywords:
Nematodes, pharynx, pharengeal pump, FMRFamid–like neuropeptides.
Text

Введение

Проблема лекарственной резистентности паразитических организмов требуют поиска новых биологических мишеней у этих животных и разработки новых лекарственных препаратов, воздействующих необратимо на эти мишени и способствующих сдерживанию паразитарной инвазии человека, ресурсных видов животных и растений.

В этом аспекте большой интерес представляют нейропептиды, в частности, FMRFамид-подобные пептиды — относительно короткие пептиды, в аминокислотной последовательности на С-конце которых, расположен RFамид мотив [22].

 

Установлено, что иммунореактивность к FMRFамид-подобным веществам широко распространена в центральном и периферическом отделах нервной системы свободно-живущих и паразитических нематод [15; 6; 14; 23]. Такая обильная распространенность FMRFамид-подобных нейропептидов в нервных структурах нематод указывает на их участие в различных биологических процессах, обеспечивающих жизнедеятельность этих организмов.

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