Earthworm (Oligochaeta, Lumbricidae) intraspecific genetic variation and polyploidy.

Earthworms are known for their intricate systematics and a diverse range of reproduction modes, including outcrossing, self-fertilization, parthenogenesis, and some other modes, which can occasionally coexist in a single species. Moreover, they exhibit considerable intraspecific karyotype diversity, with ploidy levels varying from di- to decaploid, as well as high genetic variation. In some cases, a single species may exhibit significant morphological variation, contain several races of different ploidy, and harbor multiple genetic lineages that display significant divergence in both nuclear and mitochondrial DNA.

[Chemotherapy-associated clinical dynamics of nosogenic reactions in breast and ovarian cancer model].

Objective: To study the clinical features, dynamics and factors of nosogenic reactions (NR) development in patients with breast and ovarian cancers at the stage of chemotherapy.

Material And Methods: The study involved 35 patients who underwent chemotherapy. Clinical-psychopathological and psychometric methods were used to assess the mental state.

Earthworms of Belarus (Annelida: Megadrili).

A survey of the earthworm fauna of Belarus that included most of its territory was performed in this study. One genus, three species and one subspecies were reported for the first time. The fauna of Belarus thus comprises 17 species and two subspecies.

First Evidence of Microplastic Occurrence in the Marine and Freshwater Environments in a Remote Polar Region of the Kola Peninsula and a Correlation with Human Presence.

Microplastics (MPs) have even been detected in remote environments, including high-latitude regions, where human activities are restricted or strongly limited. We investigated the surface water of the bays of the Barents Sea and the freshwater lakes that are located close to and several kilometers from a year-round resident field station in the remote tundra region of the Kola Peninsula. The microplastics' presence in aquatic environments in this region has not been indicated yet.

[Efficacy of non-drug methods of treatment of vestibular dysfunction in elderly patients with vestibular migraine.].

The purpose of the study was to compare the effectiveness of non-drug treatment methods (vestibular rehabilitation, ketogenic diet) for leveling vestibular dysfunction in elderly patients with vestibular migraine. The study included elderly patients with vestibular migraine. In the first group (28 patients), vestibular gymnastics was used to correct vestibular dysfunction, in the second group (28 patients), a ketogenic diet served as a non-pharmacological method of exposure and a control group (28 patients) who did not receive non-drug correction measures.