Deletion of altered transcriptomic and metabolomic profiles of Dahl salt-sensitive rats.

The inwardly rectifying K channel K5.1 () is essential in renal salt handling and blood pressure control. However, the underlying mechanisms are not fully understood.

Effects of zinc in podocytes and cortical collecting duct in vitro and Dahl salt-sensitive rats in vivo.

Zinc is one of the essential divalent cations in the human body and a fundamental microelement involved in the regulation of many cellular and subcellular functions. Experimental studies reported that zinc deficiency is associated with renal damage and could increase blood pressure. It was proposed that zinc dietary supplementation plays a renoprotective role.

Small airways response to bronchodilators as the marker of the uncontrolled asthma in children.

Objective: Aim: To develop the criteria of small airways response to bronchodilators (by spirometry indices maximal expiratory flow (MEF50 and MEF25) as the markers of uncontrolled asthma course.

Patients And Methods: Materials and Methods: The study involved 92 participants (64 boys and 28 girls) aged 6 to 17 years (60 were less than 12 years old) with diagnosed asthma. Asthma control was assessed with the use of Asthma Control Test and Asthma Control Questionnaire.

The presence of xanthine dehydrogenase is crucial for the maturation of the rat kidneys.

The development of the kidney involves essential cellular processes, such as cell proliferation and differentiation, which are led by interactions between multiple signaling pathways. Xanthine dehydrogenase (XDH) catalyzes the reaction producing uric acid in the purine catabolism, which plays a multifaceted role in cellular metabolism. Our previous study revealed that the genetic ablation of the Xdh gene in rats leads to smaller kidneys, kidney damage, decline of renal functions, and failure to thrive.

Metabolic Communication by SGLT2 Inhibition.

Background: SGLT2 (sodium-glucose cotransporter 2) inhibitors (SGLT2i) can protect the kidneys and heart, but the underlying mechanism remains poorly understood.

Methods: To gain insights on primary effects of SGLT2i that are not confounded by pathophysiologic processes or are secondary to improvement by SGLT2i, we performed an in-depth proteomics, phosphoproteomics, and metabolomics analysis by integrating signatures from multiple metabolic organs and body fluids after 1 week of SGLT2i treatment of nondiabetic as well as diabetic mice with early and uncomplicated hyperglycemia.

Results: Kidneys of nondiabetic mice reacted most strongly to SGLT2i in terms of proteomic reconfiguration, including evidence for less early proximal tubule glucotoxicity and a broad downregulation of the apical uptake transport machinery (including sodium, glucose, urate, purine bases, and amino acids), supported by mouse and human SGLT2 interactome studies.

Effect of SGLT2 inhibition on salt-induced hypertension in female Dahl SS rats.

Sodium-glucose co-transporters (SGLTs) in the kidneys play a pivotal role in glucose reabsorption. Several clinical and population-based studies revealed the beneficial effects of SGLT2 inhibition on hypertension. Recent work from our lab provided significant new insight into the role of SGLT2 inhibition in a non-diabetic model of salt-sensitive hypertension, Dahl salt-sensitive (SS) rats.

Predictive risk factors before the onset of familial rheumatoid arthritis: the Tatarstan cohort study.

Background: A familial history of rheumatoid arthritis (RA) predisposes an individual to develop RA. This study aimed at investigating factors associated with this conversion from the Tatarstan cohort.

Methods: A total of 144 individuals, referred to as pre-RA and at risk for familial RA, were selected 2 years (range: 2-21 years) before conversion to RA and compared to non-converted 328 first-degree relatives (FDR) from RA as assessed after ≥2 years follow-up, and 355 healthy controls were also selected (HC).

Protease-Activated Receptor 1-Mediated Damage of Podocytes in Diabetic Nephropathy.

Unlabelled: There is clinical evidence that increased urinary serine proteases are associated with the disease severity in the setting of diabetic nephropathy (DN). Elevation of serine proteases may mediate [Ca2+]i dynamics in podocytes through the protease-activated receptors (PARs) pathway, including associated activation of nonspecific cation channels. Cultured human podocytes and freshly isolated glomeruli were used for fluorescence and immunohistochemistry stainings, calcium imaging, Western blot analysis, scanning ion conductance microscopy, and patch clamp analysis.

A familial case of MYH9 gene mutation associated with multiple functional and structural platelet abnormalities.

Mutations in the MYH9 gene result in macrothrombocytopenia often associated with hemorrhages. Here, we studied the function and structure of platelets in three family members with a heterozygous mutation R1933X in the MYH9 gene, characteristic of closely related disorders known as the May-Hegglin anomaly and Sebastian syndrome. The examination included complete blood count, blood smear microscopy, platelet flow cytometry (expression of P-selectin and active integrin αIIbβ3 before and after activation), the kinetics of platelet-driven contraction (retraction) of blood clots, as well as scanning/transmission electron microscopy of platelets.

COX2 Effects on endometrial carcinomas progression.

Uterine corpus cancer is one of the most prevalent gynecologic malignancies, among which endometrial cancers (EC) represent about 90 %. Despite the proven predictive value of several immunohistochemical markers, there remains a need to identify new indicators of EC progression and exploit them for therapeutic purposes. Potential candidates with diagnostic and therapeutic efficacy include cyclooxygenases (COXs).

Interplay of Environmental, Individual and Genetic Factors in Rheumatoid Arthritis Provocation.

In this review, we explore systemization of knowledge about the triggering effects of non-genetic factors in pathogenic mechanisms that contribute to the development of rheumatoid arthritis (RA). Possible mechanisms involving environmental and individual factors in RA pathogenesis were analyzed, namely, infections, mental stress, sleep deprivation ecology, age, perinatal and gender factors, eating habits, obesity and smoking. The non-genetic factors modulate basic processes in the body with the impact of these factors being non-specific, but these common challenges may be decisive for advancement of the disease in the predisposed body at risk for RA.

SGLT2 inhibition effect on salt-induced hypertension, RAAS, and Na transport in Dahl SS rats.

Na-glucose cotransporter-2 (SGLT2) inhibitors are the new mainstay of treatment for diabetes mellitus and cardiovascular diseases. Despite the remarkable benefits, the molecular mechanisms mediating the effects of SGLT2 inhibitors on water and electrolyte balance are incompletely understood. The goal of this study was to determine whether SGLT2 inhibition alters blood pressure and kidney function via affecting the renin-angiotensin-aldosterone system (RAAS) and Na channels/transporters along the nephron in Dahl salt-sensitive rats, a model of salt-induced hypertension.

Acute and long-term effects of cannabinoids on hypertension and kidney injury.

Cannabinoids and their endogenous and synthetic analogs impact blood pressure and contribute to the incidence of hypertension. It was previously reported that the endocannabinoid system plays an important role in developing hypertension; however, it was also shown that cannabinoids elicit profound hypotension associated with hemorrhagic, cardiogenic, and endotoxic shock. This study aimed to test acute and chronic effects of an endogenous ligand of cannabinoid receptor anandamide (AEA) on blood pressure and kidney injury in vivo in conscious Dahl salt-sensitive (SS) rats.

Metabolism of a New Dipeptide Neuroprotector in Rats.

Metabolism of a new neuroprotector GZK-111 (N-phenylacetylglycyl-L-proline ethyl ester) in rat blood plasma was studied by HPLC-mass spectrometry. Four biotransformation products were identified. It is concluded that the main ways of GZK-111 biotransformation are hydrolysis of the ester bond by esterases followed by degradation of the resulting metabolite, as well as reactions leading to the formation of phenylacetic acid and cycloprolylglycine that exhibits neuropsychotropic activity.

Potential Role of Hydroxyapatite Nanocrystalline for Early Diagnostics of Ovarian Cancer.

Calcification is one of the clinical and morphological manifestations of ovarian tumors and it begins at the initial stages of carcinogenesis. Thus, this process can be used for the early diagnostics of some malignant ovarian tumors. We compared the results of ultrasound and histology and found that calcifications of a size less than 200 μm are not detected by ultrasound.

[Treatment of postoperative anterior mediastinitis, sternal osteomyelitis in a patient with a novel coronavirus infection].

The incidence of mediastinitis after median sternotomy makes up 1-3%. This complication results prolonged hospital-stay, significant increase in treatment cost and high mortality (up to 75%). Severe COVID-19 pneumonia is often manifested by coughing, that impairs sternum stability after osteosynthesis.

[Forensic value of the odontoid process of the second cervical vertebra as the initial object for DNA identification].

Aim of this study is to evaluate the suitability of the fragments of the skeleton obtained from the burials from more than 50 years ago for identificational DNA-analysis. Anatomical and structural features of the odontoid process of the second cervical vertebra are presented, as well as the data of histological examination of the odontoid process and the body of the second cervical vertebra. We conclude that odontoid process of the second cervical vertebra have practical significance as starting material for obtaining high-molecular DNA in identification cases of skeletal human remains.

Number, Proliferative Activity, and Expression of Thyroid Hormone Receptors in Dermal Fibroblasts in Mice with Changed Thyroid Status.

We studied the intensity of age-specific changes in the dermis (number and proliferative activity of fibroblasts) in mice with normal and experimentally changed level of thyroid hormones. Receptors of thyroid hormones, TR-α and TR-β, in mouse dermal fibroblasts were identified by immunohistochemical methods. The relative expression of Thra, Thrb, and Dio2 genes was assessed by real-time PCR analysis.

Serous Adenocarcinoma of Fallopian Tubes: Histological and Immunohistochemical Aspects.

Background: Although primary cancer of the fallopian tubes is a relatively rare type of tumor in female reproductive organs, its mortality is quite high. It is important to identify molecular and biological markers of this malignancy that determine its specific phenotype.

Methods: The study was carried out on samples received from 71 female patients with primary cancer of the fallopian tubes.

In seroconverted rheumatoid arthritis patients a multi-reactive anti-herpes IgM profile is associated with disease activity.

Conflicting results have been reported regarding human herpes virus (HHV) reactivation in patients with rheumatoid arthritis (RA). To explore this link, 74 RA patients were selected and compared to 42 first degree relatives (FDR) from probands with RA and 25 healthy controls from the Tatarstan women cohort. The serological analysis was done by testing anti-HSV/CMV/EBV IgM, IgG, plus the IgG avidity index, and completed by evaluating HSV/CMV/EBV DNA by PCR.

[The evaluation of the lipid peroxidation system and antioxidant defense in adolescent boys with exogenously constitutive obesity with using the coefficient of oxidative stress].

Child and adolescent obesity deserves special attention, since, beginning in adolescence, it progresses and leads to the development of complications already in the adult state. One of the leading mechanisms of the pathogenesis of obesity is the activation of oxidative stress reactions, with insufficient activity of antioxidant factors. There is an opinion that integrated indicators are more informative when assessing antioxidant status disorders compared to individual indicators.

[The modern methods for the rehabilitation of adolescents suffering obesity].

Background: To-day, obesity spreads dramatically fast all over the world not only among the adults but also among the children. According to the data available from the scientific literature, the number of adolescents suffering from obesity in Russia increased more than 1.5 times during the period from 2006 till 2015.

How Rheumatoid Arthritis Can Result from Provocation of the Immune System by Microorganisms and Viruses.

The pathogenesis of rheumatoid arthritis (RA), similar to development of a majority of inflammatory and autoimmune disorders, is largely due to an inappropriate or inadequate immune response to environmental challenges. Among these challenges, infectious agents are the undisputed leaders. Since the 1870s, an impressive list of microorganisms suspected of provoking RA has formed, and the list is still growing.