Publications by authors named "Donnikov A"

Article Synopsis
  • Recent studies highlight an increasing prevalence of late-onset sepsis caused by fungal infections in immunocompromised patients, particularly concerning newborns in NICUs.
  • In a study of 3,519 newborns, very low birth weight (VLBW) infants showed a significantly higher rate of invasive mycoses and funguria compared to heavier neonates.
  • The research underscores the importance of monitoring fungal colonization in vulnerable infants, particularly those with low gestational age and extended NICU stays, and suggests enhancing diagnostic techniques to better identify these infections.
View Article and Find Full Text PDF

The study revealed no effects of pregnancy and childbirth on the course of tuberculosis in female BALB/c mice after aerosol infection with Mycobacterium tuberculosis. However, we demonstrated a negative effect of tuberculosis infection on the fertility of infected females, which manifested in a longer period from mating to pregnancy and in a smaller litter size. Impaired reproductive function in response to the effect of the systemic infectious process was accompanied by the development of immunosuppression confirmed by an immunological test (delayed-type hypersensitivity to tuberculin) and the formation of genital tract dysbiosis during pregnancy and postpartum period.

View Article and Find Full Text PDF

We evaluated the vaccine properties of a novel attenuated strain of M. tuberculosis BN (Mtb BN) and its impact on the gut microbiota in inbred female mice in comparison with a virulent strain Mtb H37Rv and a vaccine strain BCG. The Mtb BN strain demonstrated the highest anti-tuberculosis vaccine effect in I/St mice highly susceptible to tuberculosis infection and the same effect as BCG in mice of the recombinant strain B6.

View Article and Find Full Text PDF

In order to determine genetic loci associated with decreasing risk of uterine leiomyomata (UL), a genome-wide association study (GWAS) was performed. We analyzed a group of patients with a family history of UL and a control group consisting of patients without uterine fibroids and a family predisposition to this pathology. Six significant single nucleotide polymorphisms were selected for PCR-genotyping of a large data set of patients with UL.

View Article and Find Full Text PDF

The aim of the study was to analyze the relationship between the level of bisphenol A (BPA) in the blood and follicular fluid, the polymorphism of the detoxification system genes, and the outcomes of IVF cycles. The data of 300 infertile patients with fresh IVF-ET cycles were analyzed. The level of BPA in the blood and follicular fluid was determined by HPLC-MRM-MS/MS.

View Article and Find Full Text PDF
Article Synopsis
  • Female reproductive aging is a complex biological process influenced by various molecular pathways and interconnected with overall aging in the body, leading to uncertainties about their relationship.
  • Research indicates that factors like the timing of menarche and menopause can affect women's long-term health, and many women may delay childbirth due to lack of information about their reproductive potential.
  • Identifying effective aging biomarkers can help predict menopause and assess biological age, while recent studies also explore genetic markers for reproductive aging, emphasizing the need for further research in this area.
View Article and Find Full Text PDF

Infectious process even at the initial stage after aerosol infection with Mycobacterium tuberculosis induced rapid changes in vaginal microbiota in mice. Rapid decrease in both the quantity and diversity of microbiota was noted, and then, partial recovery of normal flora was observed. Changes in vaginal microbiota was detected as soon as in 3-7 days after lung infection, while inflammatory changes appeared by day 35.

View Article and Find Full Text PDF

Aim: to study the renin-angiotensin-aldosterone-system (RAAS) in patients with polymorphic variants of the vitamin D receptor gene (VDR), arterial hypertension (AH) and obesity.

Materials And Methods: We included in this study 98 patients with stage II-III AH and obesity (33 men, 65 women, mean age 61.1±9.

View Article and Find Full Text PDF

Aim: To investigate whether intravenous contrast-enhanced multislice spiral computed tomography (computed tomography) (MSCT) versus myocardial morphological examination can diagnose myocarditis and the non-inflammatory causes of dilated cardiomyopathy (DCM) and evaluate prognosis in patients with the latter.

Subjects And Methods: A study group consisted of 130 patients, including 95 men (46.8±11.

View Article and Find Full Text PDF

To determine the most informative markers for assessing the functional state of endometrium during the 'window of implantation' and creating a model for assessment of the readiness of endometrium for embryo implantation. Forty-seven women with tubal infertility and a successful IVF pregnancy participated in the study. Pipelle endometrial sample was performed during the supposed 'window of implantation' in natural cycle with subsequent histological study, and transcriptional profile of genes GPX3, PAEP, DPP4, TAGLN, HABP2, IMPA2, AQP3, HLA-DOB, MSX1, POSTN determined by real-time quantitative polymerase chain reaction (qRT-PCR).

View Article and Find Full Text PDF

Background: The nosological nature of "idiopathic" arrhythmias and the effect of etiotropic and pathogenetic treatment are often unknown.

Methods And Results: 19 patients (42.6±11.

View Article and Find Full Text PDF

Intravenous infection of C57Bl/6 female mice with M. tuberculosis H37Rv led to involvement of the lungs and dissemination of the tuberculous infection to the abdominal and pelvic organs. M.

View Article and Find Full Text PDF

The expression of immune response gene mRNA in the umbilical and venous blood were compared in newborns of the first day of life with and without signs of infection. The expression of il1b, il6, il8, il10, il12a, il15, il18, tnfa, tgfb1, tbx21, gata3, foxp3, rorc2, cd45, cd68, cd69, tlr2, tlr4, tlr9, and mmp8 mRNA was evaluated in umbilical and venous blood cells of newborns by reverse transcription real time PCR. In full-term newborns without signs of infection, the expression of il8, tlr2, tlr4, and mmp8 in venous blood was higher than in umbilical blood, while in preterm newborns, the levels of mmp8 transcript were elevated while the levels of tlr9, cd45, and gata3 were reduced.

View Article and Find Full Text PDF

Unlabelled: Aim of the study was to elucidate value of HAS-BLED and HEMORR2HAGES scales for prediction bleedings in patients receiving long-term warfarin (W) therapy.

Material And Methods: The study involved 119 patients (72 men) aged 60.9 ± 9.

View Article and Find Full Text PDF

Studies of collagen gene polymorphisms associated with predisposition to early recurrent miscarriages revealed significant differences in the distribution of COL1A1 C-1997A C>A (rs1107946) genotypes and alleles in the group of pregnant patients with early miscarriages in comparison with controls (normal pregnancy). Identification of COL1A1 C-1997A C>A (rs1107946) collagen gene polymorphisms at the stage of pregnancy planning will make it possible to form early miscarriage risk groups for more thorough preparation to gestation and optimization of follow up of this patient population.

View Article and Find Full Text PDF

Unlabelled: Aim of the study was to elucidate value of HAS-BLED and HEMORR2HAGES scales for prediction bleedings in patients receiving long-term warfarin (W) therapy.

Material And Methods: The study involved 119 patients (72 men) aged 60.9+/-9.

View Article and Find Full Text PDF

The expression of mRNA of 36 genes involved in implantation was studied by reverse transcription and real-time PCR. Significant differences in mRNA expression during the early and middle stages of the secretion phase were detected for genes mmp7, vegf, il2m, il1β, il8, il18, tnfα, il10, tgfβ, igfbp2, etc.

View Article and Find Full Text PDF

Aim: of the study was to elucidate nosological nature of "idiopathic" arrhythmias by means of complex clinical-morphological examination and to assess efficacy of differentiated (including etiotropic and pathogenetic) treatment.

Material And Methods: We examined 190 patients (117 women, mean age 45.33 ± 14.

View Article and Find Full Text PDF

Unlabelled: α-Actinin-3 (ACTN3) has been proposed to regulate skeletal muscle differentiation and hypertrophy through its interaction with the signalling protein calcineurin. Since the inhibition of calcineurin potentiates the production of testosterone, we hypothesized that α-actinin-3 deficiency (predicted from the ACTN3 XX genotype) may influence serum levels of testosterone of athletes.

Objective: To investigate the association of ACTN3 gene R577X polymorphism with resting testosterone levels in athletes.

View Article and Find Full Text PDF

Exercise-induced oxidative stress is a state that primarily occurs in athletes involved in high-intensity sports when pro-oxidants overwhelm the antioxidant defense system to oxidize proteins, lipids, and nucleic acids. During exercise, oxidative stress is linked to muscle metabolism and muscle damage, because exercise increases free radical production. The T allele of the Ala16Val (rs4880 C/T) polymorphism in the mitochondrial superoxide dismutase 2 (SOD2) gene has been reported to reduce SOD2 efficiency against oxidative stress.

View Article and Find Full Text PDF

We examined 179 patients with and without preterm rupture of fetal membranes. The mothers and their newborns have been genotyped by two polymorphic loci of estrogen receptor α (ESR1) gene: -397T > C[PvuII] (rs2234693) and -351A > G[XbaI] (rs9340799). The CG haplotype of the fetus should be regarded as a risk factor of preterm rupture of fetal membranes, while haplotype TA as a protective factor.

View Article and Find Full Text PDF

We present here analysis of surgical treatment of 24 patients (5 women, 19 men, age 20-75, mean age 50.7 +/- 2.5 years) with dilated cardiomyopathy (DCM) operated during the period from 2008 to 2013.

View Article and Find Full Text PDF

Unlabelled: Aim of the study was to elucidate nosological nature of "idiopathic" arrhythmias by means of right ventricular endomyocardial biopsy (EMB) and to assess effect of etiotropic and pathogenetic treatment.

Material And Methods: We included into this study 19 patients (mean age 42.6 +/-11.

View Article and Find Full Text PDF

Noncompaction myocardium (NCM) is a genetic heterogeneous primary cardiomyopathy which affects both children and adults and can be either isolated or combined with other congenital heart disorders. It has common pathogenesis of symptoms but is distinguished by pronounced clinical polymorphism. We have observed 25 adult patients (15 men, 10 women aged from 20 to 62 years, mean age 42.

View Article and Find Full Text PDF

We studied the relationship between the levels of protamines 1 and 2 (PRM1 and PRM2) and fertilin-β (ADAM-2) mRNA expression and outcomes of infertility treatment using assisted reproductive technologies was studied. Analysis of the relationships between the outcomes of in vitro fertilization and embryo transfer and profiles of the expression of seminal genes PRM1, PRM2, ADAM-2 mRNA, evaluated by reverse transcription quantitative PCR was carried out in 79 couples. Significant differences in the expression of seminal PRM1, PRM2, ADAM-2 mRNA were detected in couples with different outcomes of in vitro fertilization and embryo transfer.

View Article and Find Full Text PDF