Morphological and molecular data for two species (Trematoda: Plagiorchiidae) from the southern Far East of Russia.

Adult trematodes of two species of the genus were found in the southern Far East of Russia: one species in the intestine of a naturally infected Japanese large-footed bat () and the other in a golden hamster () experimentally infected with metacercariae collected from a stonefly. On the basis of morphological and molecular studies, the trematode individuals found in the bat were identified as , which confirms that this species is cosmopolitan. The trematodes reared in the hamster were similar in their morphological features to the European However, due to the lack of nucleotide sequences for this species from the type region, the southern Far East of Russia trematodes, found in this study, were provisionally designated as In addition, the phylogenetic reconstruction based on a mitochondrial marker revealed inconsistency of the data obtained from cercariae diagnosed as a single species, Our data also indicate that the specimens available in the NCBI database referred to as and belong to the same species.

First detection of in muskrat in East Asia and a description of n. sp.

The East Asian region has seen the first discovery of trematodes of the genus in the muskrat When studying the morphology of the trematodes, two morphotypes were identified among individuals of spp., the differences between which at the morphological level are equivalent to those between species. The affiliation of one of these morphotypes with the bird parasite was established based on partial sequences of genes coding for 28S ribosomal RNA, , and mitochondrial DNA.

Can Cryptogonimids of the Same Genus Influence Each Other's Level of Genetic Variation?

Trematodes of the genus are parasites that are common in East and Southeast Asia. These parasites are known to infect fish, thus impacting aquaculture significantly. An introspection into the dynamics of infection of these parasites has revealed possible co-infection in shared hosts.

Body Surface Ultrastructure as a Main Morphological Criterion for Distinguishing Adult Trematode .

In the present study, the ultrastructure of the body surface of mature trematodes of Shumenko et al., 2017 has been studied for the first time. It has been found that the tegumental spines on the surface of their bodies are very different from those in three other species of large trematodes of the genus : Katsurada, 1912; Suzuki in Takahashi, 1929; and Saito et al.

New insights into the systematics of Cyclocoelidae (Trematoda: Echinostomatoidea) based on novel morphological and molecular data, with description of a new species and a new genus.

In light of the morphological and molecular data for cyclocoelids observed from the air sacs of Mareca strepera (Linnaeus) (Anatidae, Anseriformes) caught in the southern region of the Russian Far East, we suggest new insights into the systematics of the family Cyclocoelidae. A comparative morphological and phylogenetic analyzes revealed that new cyclocoelids represented the new genus and species Paracyclocoelum lobatum. Based on the 28S rRNA gene fragment we showed the significant genetic divergence of P.

A Description of n. sp. (Echinochasmidae) Based on Morphological and Molecular Data.

Adult individuals of n. sp. were obtained during an experimental study on trematodes' life cycle.

Study of Viral Coinfection of the Ticks Feeding on Humans in a Natural Focus of the South of the Far East.

The phenomenon of pathogen co-infection detected in a half-fed tick taken from a human in the south of the Far East was studied. Research was carried out on , , and cell lines, outbred mice, and chicken embryos using ELISA, PCR, IMFA, plaque formation, and electron microscopy. The tick contained an antigen and a genetic marker of the tick-borne encephalitis virus (TBEV).

Morphological and molecular description of Dictyocaulus xanthopygus sp. nov. (Nematoda: Trichostrongyloidea) from the Manchurian wapiti Cervus elaphus xanthopygus.

Dictyocaulus xanthopygus sp. nov. (Nematoda: Trichostrongyloidea) was isolated from the lungs of the Manchurian wapiti in Primorsky kray, Russia.

Antiparasitic Effects of Sulfated Polysaccharides from Marine Hydrobionts.

This review presents materials characterizing sulfated polysaccharides (SPS) of marine hydrobionts (algae and invertebrates) as potential means for the prevention and treatment of protozoa and helminthiasis. The authors have summarized the literature on the pathogenetic targets of protozoa on the host cells and on the antiparasitic potential of polysaccharides from red, brown and green algae as well as certain marine invertebrates. Information about the mechanisms of action of these unique compounds in diseases caused by protozoa has also been summarized.

[The antimicrobial strategies of neutrophils under infection pathology.].

The neutrophilic granulocytes were traditionally considered exclusively as phagocytes - killer cells of microorganisms invaded human organism. The discoveries of last decade permitted to significantly reconsider this role and importance of neutrophils in implementation of affect mechanisms of inherent and adaptive immunity. The modern achievements expanded our conceptions about anti-microbial strategies of neutrophilic granulocytes under infection pathology: phagocytosis, degranulation and development of neutrophil extracellular traps.

Review: prospects for the use of extracts and polysaccharides from marine algae to prevent and treat the diseases caused by Helicobacter pylori.

Helicobacter pylori possesses a broad spectrum of pathogenic factors that allow it to survive and colonize the gastric mucosa, and thus, the pathogenetic targets, which have the same diversity, require search for and the development of alternative, effective, and innocuous means for the eradication of H. pylori. In recent years, fucoidans have been extensively studied due to the numerous interesting biological activities, including the anti-adhesive, anti-oxidative, antitoxic, immunomodulatory, anticoagulant, and anti-infection effects.

Fucoidan extracted from Fucus evanescens prevents endotoxin-induced damage in a mouse model of endotoxemia.

An important problem of treating patients with endotoxemia is to find drugs to reduce the negative effects of endotoxin on the organism. We tested fucoidan (sulfated polysaccharide) from the brown alga Fucus evanescens as a potential drug in a mouse model of endotoxemia inducted by lipopolysaccharide (LPS). The survival time of mice injected with LPS increased under fucoidan treatment compared with the group of mice injected with LPS only.