bluuebunny/crossref_metadata_2025_split huggingface dataset:
Galectin-9 influences the Tim-3 molecule expression in natural killer different subpopulations
Authors: Orlova E. G. , Loginova O. A. , Gorbunova O. L. , Shirshev S. V. 
Published: June 2023

Galectin-9 is a b-galactoside binding lectin with expressed immunoregulatory activity. During pregnancy galectin-9 is produced by trophoblast cells and regulates the function of natural killer (NK) cells at the maternal-fetal interface via binding to Tim-3 (T-cell Ig and mucin domain-containing protein 3) molecules. Natural killer (NK) lymphocytes belong to the innate lymphoid cells, which have a cytotoxic effect on target cells and are capable of producing a large number of regulatory factors (cytokines, chemokines). Decidual NK have a tolerant phenotype and play a leading role in the regulation of invasive trophoblast growth and provide peripheral immune tolerance in the area of uteroplacental contact. Peripheral NK cells express Tim-3 molecules. Galectin-9 concentration is increased in peripheral blood during physiologic pregnancy. At pregnancy phenotype and functions of peripheral NK cells are changed to maintain the maternal–fetal immune tolerance. Peripheral NK cells migrate to the maternal-fetal interface and are transformed into a decidual NK-like phenotype cells. Galectin-9 concentration is decreased in women with a complicated pregnancy and miscarriage. However the galectin-9 effects on different NK cell subpopulations of peripheral blood are not investigated. Therefore, we studied the galectin-9 influence on phenotype transformation and Tim-3 expression of NK cells isolated from peripheral blood of healthy non-pregnant fertile women. CD56+NK cells were obtained by immunomagnetic separation and cultivated in vitro during 72 hours with cytokines (IL-2 and IL-15). Galectin-9 (5 ng/mL) and anti-Tim-3 (10 mg) antibodies were added to the NK cultures. Galectin-9 concentration is corresponded to its level during first trimester of physiologic pregnancy. The number of regulatory NK (CD16-CD56bright), cytotoxic NK (CD16+CD56dim/-) cells and Tim-3 expression on different NK subpopulations were assessed by flow cytometry. It was found that Tim-3 was expressed on all subpopulations of peripheral blood NK cells (CD16-CD56brightNK, CD16+CD56dimNK, CD16+CD56-NK). Incubation with galectin-9 increased the expression of Tim-3 on regulatory CD16-CD56brightNK cells and did not change on cytotoxic CD16+CD56dim/-NK cells. Galectin-9 reduced the percentage of cytotoxic CD16+CD56dimNK in culture, but did not influence the number of regulatory CD16-CD56bright NK and cytotoxic CD16+CD56-NK cells. Thus, galectin-9 regulates Tim-3 molecule expression and NK cell subpopulation distributions in vitro culture.
Immunological aspects of the use of melatonin in experimental thermal trauma
Authors: Osikov M. V. , Ageeva A. A. , Boyko M. S. , Ageev Yu. I. 
Published: June 2023

The prevalence of thermal trauma, the high risk of infectious and non-infectious short- and long- term complications, and the limited effectiveness of the therapeutic approaches used are prerequisites for the search and pathogenetic justification of new therapies, among which the endogenous homeostasis regulator with pleiotropic properties melatonin attracts attention.The aim of the work is to investigate the immunological aspects of intraperitoneal use of melatonin (MT) in experimental thermal trauma (TT).The work was performed on 158 rats of the Wistar line, grade III TT and a relative area of 3.5% were simulated by skin immersion in water at 98-99 °C for 12 s. MT was administered intraperitoneally daily at a dose of 10 mg/kg for 5 days. The quantitative composition of blood cells was evaluated on a hematological analyzer. Plasma concentrations of IL-4, TNFa, IFNg, and CRP were determined on an automatic enzyme immunoassay using rat-specific test systems, and MT by capillary electrophoresis.With experimental TT, against the background of a progressive increase in the number of leukocytes in the blood from 5 to 20 days due to neutrophils, monocytes, basophils, the number of lymphocytes decreases. With TT, the concentration of CRP increases in serum on days 5 and 10. The content of TNFa, IL-4 increases on days 5, 10 and 20 in the absence of significant changes in the concentration of IFNg. The concentration of serum MT does not change significantly. Intraperitoneal use of MT in TT leads to a partial restoration of the number of lymphocytes in the blood on day 5. Evaluation of the cytokine profile in serum revealed a decrease in the concentration of TNFa on days 10 and 20, no significant changes in the concentration of IL-4 and IFNg were recorded, the concentration of CRP decreased on day 5. The concentration of serum MT increases by 5 days.With TT on the 5th, 10th, 20th day of the experiment, the number of neutrophils, monocytes, basophils in the blood increases, decreases – lymphocytes, the serum content of CRP, TNFa, IL-4 increases, the content of IFNg and melatonin does not change. Intraperitoneal use of MT in TT partially restores the number of lymphocytes in the blood, the concentration of CRP, TNFa. A decrease in serum concentrations of TNFa and CRP in TT under the conditions of MT use suggests a limitation of the acute phase response as a consequence of the antioxidant, anti-inflammatory effect of MT, which can accelerate healing and reduce the area of the lesion of TT.
Investigation of local expression of NLRP3 inflammasome complex genes in modeling retinal degeneration <i>in vivo</i>
Authors: Neroeva N. V. , Svitich O. A. , Neroev V. V. , Kinkulkina A. R. , Balatskaya N. V. , Sorozhkina E. S. 
Published: June 2023

Neurodegenerative ophthalmopathology is one of the main causes of irreversible blindness and disability in the world. In the pathogenesis of diseases of this group, more and more attention has recently been paid to the role of local inflammation caused by the activation of innate immunity and the mechanisms of its genetic regulation. In recent years, works have appeared in the field of experimental ophthalmology that have demonstrated the possibility of NLRP1, NLRP3 inflammasome complexes assembling when exposed to hyperglycemia, oxygen deprivation of retinal cells, as well as modeling compressive stress similar to that in glaucoma [15]. However, the mechanism of inflammasome involvement in the development of neurodegenerative eye diseases remains unclear. The aim of the study was to investigate the local expression of genes encoding proteins of the NLRP3 inflammasome complex (NLRP3, CASP-1) in an experimental model of retinal degeneration in rabbits. The studies were performed on samples of tissue complex (TC) of the retina/retinal pigment epithelium (RPE) (retina/RPE TC), isolated from the eyes of 14 New Zealand albino rabbits, in which degenerative retinal lesion was modeled by a single subretinal injection of 0.01 mL of 0.9% sodium chloride solution, and 7 healthy rabbits without eye damage. The formation of retinal degeneration was judged on the basis of changes in morphofunctional parameters obtained during specialized ophthalmological research methods (optical coherence tomography, fundus autofluorescence, electroretinography) at follow-up periods of 1, 3 and 6 months. The level of expression of NLRP3 and CASP-1 genes in the retina/RPE TC was evaluated by reverse transcription polymerase chain reaction (RT-PCR). According to the results of the study, a statistically significant increase in NLRP3 gene expression (p < 0.001) was noted in the retina/RPE TC of experimental animals, which may indicate the involvement of NLRP-3 inflammasome components in the development of neurodegenerative retinal lesions. At the same time, the expression of the gene encoding CASP-1 was detected only in the retina/RPE TC of experimental eyes and is probably due to local inflammatory mechanisms in the retinal tissue.The high level of NLRP3, CASP-1 mRNA, detected in all retina/RPE TC samples of experimental eyes at late stages of the experiment (3 and 6 months), allows us to assume the formation of mechanisms (for example, activated glial phenotype) that support inflammation in retinal tissue. This should be taken into account in actively developing transplantation methods for the treatment of retinal degeneration.
Thymus mast cells as a component of neuro-endocrine-immune interactions under stress
Authors: Artashyan O. S. , Khramtsova Yu. S. 
Published: June 2023

Mast cells (MCs) are a required component of the thymus microenvironment. They affect intercellular interactions and permeability of the hematothymic barrier through cytokine production. There is speculation that the thymus is the site of MCs formation and deposition. MCs are under complex neuro-endocrine control and they can play an important role in the process of acute transformation of the thymus in the formation of a stress reaction, affecting the extrathymic migration of cells. The purpose of this study is to assess the functional involvement of MCs in the process of the thymus acute transformation at various hyper- and hypodynamic effects during the formation of stress response and without it.The study was conducted on male Wistar rats. The stress factors were physical activity (swimming) of different intensities and immobilization, which represent two opposite states of dynamic stress. MCs were classified on histological preparations; a degranulation coefficient and a mean histochemical coefficient (synthetic activity) were calculated.In groups with preserved adrenal glands after exposure a significant decrease in the thymus mass coefficient is noted, which indicates a weakening of its functional activity in response to the development of stress. At the same time, MCs of the thymus quickly respond to neuro-endocrine factors under stress. These cells are involved in a general reaction: their activity consists in a synchronous decrease of the synthesis of granules in the cytoplasm and an increased release of active substances accumulated earlier. The mass and structure of the thymus remain unchanged in groups with removed adrenal glands after immobilization. No changes in morphofunctional indicators of mast cells were detected either. Experiments with hypo- and hyperdinamic loading of animals with preserved and removed adrenal glands indicate that the MCs response is largely determined by the hypothalamic-pituitary-adrenal axis of the endocrine system. Removal of the adrenal glands (inability to release glucocorticoids) leads to a lack of functional response from the thymus MCs. The stimulating effect of adrenal glucocorticoids on MCs under stress is carried out in combination with other neuro-endocrine factors (catecholamines, corticotropin-releasing hormone, adrenocorticotropic hormone). When this axis is activated and a full-fledged stress reaction is formed by the body, MCs are actively involved in the process of acute transformation of the thymus through cytokine secretion. These is an important condition for the development of adaptation mechanisms by the immune system.
Levels of sex steroids in lung tissues of patients with non‑small cell lung cancer after COVID‑19 of different severity
Authors: Kit O. I. , Frantsiyants E. M. , Kharagezov D. A. , Bandovkina V. A. , Shikhlyarova A. I. , Cheryarina N. D. , Pogorelova Yu. A. , Lazutin Yu. N. , Milakin A. G. , Leyman I. A. , Stateshny O. N. , Ayrapetova T. G. , Goroshinskaya I. A. 
Published: June 2023

The purpose of the study. To analyze levels of sex hormones and cortisol in lung tissues of patients with lung cancer with previous COVID‑19 of different severity.Materials and methods. The material for the study included samples of lung tissues obtained after open biopsy at radical surgery from 60 patients with morphologically verified stage I–IIIA non‑small cell lung cancer (NSCLC) (сT1–3NХ M0). The mean age of patients was 59.11 ± 2.9 years. All patients had negative results of SARS‑CoV‑2 nasopharyngeal swab PCR testing at hospitalization. Based on the anamnestic data collected using a special questionnaire, the main and control groups were formed depending on COVID‑19 severity. The main group included 30 NSCLC patients (15 men and 15 women) after severe or moderate COVID‑19 who had required hospitalization; the control group included 30 patients with NSCLC after asymptomatic or mild SARS‑CoV‑2 infection. All patients underwent COVID‑19 infection for 3 months or more before the start of NSCLC treatment. Quantitative assessment of estradiol (E2), testosterone (T), progesterone (P4) and cortisol (C) was performed by RIA in 10 % homogenates of the tumor and resection line tissues.Results. Resection line tissues in women of the main group showed an increase of E2 by 1.7 times, C by 1.6 times, P4 by 4.1 times, and a decrease of T by 1.3 times; in men, levels of T and P4 were increased on average by 1.8 times (p < 0.05). Tumor samples in men and women of the main group demonstrated increased E2 by 1.7 times, and C by 1.8 times in women only (p < 0.05).Conclusions. Severe COVID‑19 changed the hormonal profile of unaffected lung tissues, especially in women, and the tumor itself. Most likely, we should expect the increase in the incidence of lung cancer, especially in females, and also changes in its course, response to antitumor therapy and, possibly, higher rates of complications and adverse outcomes.
Radiographic methods of examination of the thoracic cavity organs in the elderly: age characteristics, norms and pathology
Authors: Riaskin K. A. , Titova L. A. , Moshurov I. P. , Ganzya M. S. 
Published: June 2023

Prolongation of a healthy life duration is one of the priority tasks in terms of solving the problem of quality and safety of medical activity. Respiratory diseases account for the significant amount in the morbidity structure of the geriatric population. Such diseases include chronic obstructive pulmonary disease, chronic bronchitis, pneumonia, bronchial asthma and acute respiratory viral diseases, which, in combination with other pathological conditions, contribute to an increase in morbidity and mortality of the population in this group. These diseases among the geriatric population are characterized by a latent onset, the absence of obvious clinical manifestations, monotony of symptoms, the presence of combined pathologies, which can lead to erroneous diagnoses. X‑ray research methods play a key role in the diagnosis of pathologies of respiratory diseases. However, it is necessary to correctly assess the age‑related processes that cause morphological changes in the chest, and adequately differentiate them from the obvious manifestations of diseases. The role of the radiologist in this can be decisive. The joint work of geriatricians, radiologists, pulmonologists will help to provide a clear comprehensive assessment and interpretation of the visualization of various conditions of the respiratory system in the elderly.In this review, the features of chest radiography in elderly patients associated with age‑related changes are analyzed and their differentiation with pathological manifestations is carried.
Morphometric parameters of pelvic lymph nodes in experimental metastatic prostate cancer
Authors: Astashov V. V. , Kulchenko N. G. 
Published: June 2023

The study purpose. Identification of structural and functional changes in pelvic lymph nodes in experimental metastatic prostate cancer.Materials and methods. The study included 30 male mice aged 3 months. All animals (n = 30) were divided into 2 groups. The first group (the main one, n = 20) included mice that had a model of metastatic prostate cancer created by transplanting an Ehrlich tumor into the prostate parenchyma. These animals were further divided into two equal subgroups: 1a (n = 10) – mice were withdrawn from the experiment on day 7; 1b (n = 10) – mice were withdrawn from the experiment on day 18. The second group (n = 10) included mice that were not manipulated, they made up the control group. After the end of the experiment, morphological analysis of the prostate gland and regional (pelvic) lymph nodes in mice of both groups was performed using light microscopy. Statistical processing of the results was carried out using the Statistica 8.0 software package. The differences were considered statistically significant at p < 0.05.Results. When compared to the control group the mice of groups 1a and 1b, the prostate parenchyma was almost completely replaced by atypical cells, which demonstrates the presence of neoplastic processes in the prostate gland. In group 1a mice, the number of pelvic lymph nodes was 1.9 times as large, and in group 1b animals, this indicator was 2.7 times higher compared to the second group (p < 0.01). In animals of the first group, the proportion of mast cells in the pelvic lymph nodes increased by 121 % compared to the control group (p < 0.01). At the same time, we revealed a direct relationship of mast cells with the number of tumor cells and immunoblasts in the medullar sinuses, which indicates the participation of tissue basophils in tumor metastasis. We also recorded a significant increase in the area of the medullar sinuses of regional lymph nodes in animals of groups 1a by 12.4 % (p < 0.05) and 1b by 20.2 % (p < 0.01) against the background of an increase in the number of mast cells in this zone compared to the control group, which indicates the possible participation of mast cells in lymphangiogenesis.Conclusion. Mast cells can potentially play a role in the development of malignant neoplasms of the prostate gland. The number of mast cells increases in pelvic lymph nodes in animals with a created model of metastatic prostate cancer. The obtained direct dependence of the increase in the number of mast cells and the increase in the number of tumor cells with immunoblasts suggests the participation of tissue basophils in the spread of metastases. It can be assumed that infiltration of lymph nodes by mast cells may correlate with a poor prognosis of prostate cancer, since these granulocytes contribute to tumor metastasis.
Comparative Evaluation of the Possibilities of Radiomic Аnalysis of Magnetic Resonance Imaging in the Differential Diagnostics of Primary Extra-Axial Intracranial Tumors
Authors: Surovcev E. N. , Kapishnikov A. V. , Kolsanov A. V. 
Published: June 2023

Purpose of the study. Comparing magnetic resonance imaging (MRI) abilities in differential diagnostic of three types of primary extra‑ axial brain tumors (benign and malignant meningiomas, and neuromas) based on standard semiotics and radiomic features.Patients and methods. Retrospective research included 66 patients with primary extra‑a xial tumors who were divided into two groups: the instructional (39 patients) and the valid (27 patients). MRI was used towards all patients before surgery. The one method of statistical modeling – discriminant analysis – was used to compare the abilities of differential diagnostic based on semiotic features and radiomic parameters.Results. The features of tumor semiotics MRI didn’t allow to differentiate effectively benign and malignant meningiomas. Several parameters were certainly varied for all those tumor types (neuromas, benign and malignant meningiomas). The modelling based on the discriminant analysis demonstrated that radiomic features can be used for primary extra‑a xial tumors differential diagnostic. The area of the radiomic model ROC‑curve took 0.86 which exceeds the result of the model based on semiotic features (AUC 0.78).Conclusion. The best results of the tumors classification by radiomic model demonstrate expediency to continue research the primary extra‑ axial tumors differential diagnostic with support of histogram and textural parameters of MRI imaging.
Retrospective analysis of the provision of urological care to patients with chronic balanoposthitis against the background of carbohydrate metabolism disorders
Authors: Frantsev R. S. , Frantseva A. P. 
Published: June 2023

The study purpose. To conduct a retrospective analysis of the results of providing urological care to patients with chronic balanoposthitis on the background of carbohydrate metabolism disorders..Patients and methods. A retrospective analysis of the results of treatment of phimosis due to chronic balanoposthitis in 95 patients was carried out. All patients were divided into two groups. The 1st group included men who showed signs of impaired carbohydrate metabolism (n = 41; 43.1 %). The 2nd group consisted of patients who had no metabolic disorders (n = 54; 56.9 %). The average age of 41 men of the first group was 48.2 ± 17.5 years, the second group of 54 men – 44.6 ± 15.3 years (p > 0.05). According to the indications, all patients underwent local therapy with antiseptics and antimicrobial drugs. In the presence of frequent relapses of balanoposthitis, persistent pain syndrome, the presence of phimosis according to the indications, circumcision of the foreskin was performed. In all patients, the time of surgery, the volume of blood loss during circumcision, and the duration of wound healing were evaluated. We considered the clinical case completed after complete regeneration of the wound.Results. Conservative therapy of balanoposthitis in patients without impaired carbohydrate metabolism was effective in 85.1 %, and in men with type 2 diabetes mellitus (DM2) only in 9.7 %. Consequently, hyperglycemia reduces the effectiveness of conservative therapy of this disease by eight times. In patients with DM2, circumcision was performed 4.6 times more often than in the control group. The correlation of signs of hyperglycemia and the need for surgical treatment of balanoposthitis was 0.66. The duration of circumcision in group 1 was longer by 7.3 ± 3.6 min. compared with the second group (p < 0.05). Wound healing in patients with DM2 was observed almost twice as long (p < 0.05). Thus, with DM2, balanoposthitis is more difficult to treat. If balanoposthitis has a recurrent course, then circumcision can be considered as the final treatment option.Conclusion. Balanoposthitis in patients with impaired carbohydrate metabolism often has a chronic form. In patients with DM2, conservative therapy of inflammation of the foreskin of the penis is effective in one out of ten cases. In adult men, balanoposthitis was more common in middle and old age. Among patients of this age, 11 (26.8 %) people had hyperglycemia for the first time. Consequently, men of the above age may be at risk and need more careful examination of the external genitalia and control of the level of glycemia.