Distribution pattern of local immune cells within the lower urinary tract of male sheep lambs.

The local immunity of the lower urinary tract (LUT) is often presumed to influence the development of ascending infections and local inflammation. Due to small ruminants being at a higher risk of developing obstructive urolithiasis after early castration, a relationship is expected to exist between disturbed local immunity, castration and disease. However, the underlying pathophysiology and histological correlation of this assumption are unknown. This study examines the local cellular immunity of the LUT in male lambs with respect to castration status or a recent history of obstructive urolithiasis. Various tissue samples were taken and examined. The sample consisted of 34 male lambs, aged six months (n = 11 early and n = 11 late castration; n = 12 intact) and eight rams that had undergone necropsy due to fatal outcome after obstructive urolithiasis. Immunohistochemical stainings for CD3-T-cells, CD79α-B-cells and MAC 387-macrophages were performed and compared among the groups. Whereas no global group differences were evident, significant differences were found for the localizations (P = 0.002) with a significant interaction between group and localization (P = 0.004). The immunohistochemical results suggest that castration did not affect the cell number, but did have an effect on the distribution pattern of local T-cells within the urethra. In the urolithiasis cases, a reduction of CD3-positive cells along the middle part of the urethra was noticeable.

[Gut microbiome: from the reference of the norm to pathology].

А systemic assessment of the state of the human intestinal microbiome was carried out in relation to its function in the macroorganism, aimed at providing the nutriome, and the factors that determine the adequate nutritional status. A new concept of "reference gut microbiome of a healthy person" was postulated and the requirements to it were formulated: interaction with the host according to the principle of mutualism, provision of immune balance with the macroorganism due to the correct formation of mucosal immunity, implementation of metabolic and regulatory functions without losses for the nutriome. A set of characteristics and biomarkers reflecting the taxonomic composition and population properties of the microbial community, as well as the state of its essential immune and metabolic functions, was proposed as a criterion for its assessment in healthy adults who consume a diet balanced in nutritive and energy value, appropriate for age and energy spending. The influence of alimentary factors on the formation of the human intestinal microbiome in early ontogenesis, the nature of dysbiotic shifts, including those under common non-infectious alimentary-dependent diseases (obesity, food allergy, urolithiasis), in Russians were studied, the ways of their correction and maintenance of the intestinal microbiota in the process of life were substantiated taking into account modern knowledge.

[Specific features of the immune status and blebbing of the plasmatic membrane of lymphocytes patients with urolithiasis complicated by the pyelonephritis].

INTRODUCTION: According to the epidemiological studies, prevalence of urolithiasis is nearly 10% worldwide. The course of the disease is often complicated by the development of pyelonephritis, the pathogenesis of which is rather multifactorial. Along with urinary tract obstruction, increasing virulence of microorganisms and immune insufficiency in patients also plays a major role. AIM: To define specific features of immune insufficiency in patients who develop pyelonephritis as a complication of urolithiasis. MATERIALS AND METHODS: A total of 150 patients with urolithiasis complicated by pyelonephritis were prospectively enrolled into our study in order to develop a novel method. All patients were divided into two clinical groups. Group I consisted of 75 patients with urolithiasis complicated by serous pyelonephritis and Group II included 75 patients with urolithiasis complicated by purulent pyelonephritis. In all patients an evaluation of the immune status with a determination of CD3, CD4, CD8, CD16, CD19 level and phagocyte activity of immune system was carried out. The state of lymphocytes plasmatic membrane was evaluated by phase contrast microscopy. RESULTS: It is established that development of pyelonephritis in patients with urolithiasis is accompanied by a lymphopenia, the decrease in relative contents T-helpers, natural killers, as well as a decrease in the immuno-regulatory index and an increase in indicators of terminal and total lymphocytes blebbing. The most pronounced changes were noted in purulent pyelonephritis, where suppressed immune status was confirmed by the high level of lymphocyte with terminal blebbing state.

The cellular and humoral immunity assay in patients with complicated urolithiasis.

Especially complicated, renal lithiasis contributes to the general inflammatory syndrome development that interferes with nonspecific, humoral and cellular immune system. The surgical treatment of nephrolithiasis is closely related to drug therapy of urinary infection, one of the reasons being the reduction of the immune status. The work is performed by evaluating the immunological status preoperatively in 58 patients with complicated lithiasis. The analysis of the status in these patients demonstrated that complicated urolithiasis results in significant changes in the immune system, these changes being expressed at the cellular and humoral level of immunity.

Different inflammatory responses are associated with Ureaplasma parvum-induced UTI and urolith formation.

BACKGROUND: Epidemiologic studies show a strong association between Ureaplasmas and urogenital tract disease in humans. Since healthy humans can be colonized with Ureaplasmas, its role as a pathogen remains controversial. In order to begin to define the role of the host in disease, we developed a rodent model of urinary tract infection (UTI) using Fischer 344 (F344) rats. Animals were inoculated with sterile broth, 10(1), 10(3), 10(5), 10(7), or 10(9) log CFU of a rat-adapted strain of Ureaplasma parvum. RESULTS: Infected animals exhibited two distinct profiles, asymptomatic UTI and UTI complicated with struvite urolithiasis. Inoculum dose of U. parvum affected the incidence of UTI, and 50% to 57% of animals inoculated with >or= 10(7) CFU of U. parvum remained infected (p < 0.04). However, inoculum dose did not influence immune response to U. parvum. Asymptomatic UTI was characterized by a minimal immune response that was predominantly monocytic and lymphocytic, with limited lesions, and elevated urinary levels of IFN-gamma, IL-18 and MCP-1 (P

[Immunological indices in urolithiasis patients with secondary pyelonephritis].

The immunological status was studied in 335 patients with urolithiasis and pyelonephritis. The techniques used for assessment of the immunological status provided a multifactorial control over immune system function in inflammation and urolithiasis: registered a significant rise of the level of proinflammatory and anti-inflammatory mediators of the immune response (IL-1beta, IL-4, IL-6, TNF), of neutrophil metabolic activity with parallel suppression of neutrophil phagocytic and absorbing functions, inhibition of bactericidal activity of the serum, a significant fall in the number of mature T-lymphocytes (CD3+) and T-helpers (CD4+). The immune status indices in urolithiasis patients with secondary pyelonephritis are closely linked with clinico-laboratory manifestations of the inflammatory process and renal function. Thus, the results of the study give grounds for developing indications for use of immunomodulating drugs in patients with secondary pyelonephritis associated with urolithiasis.

[Diagnosis, prevention and treatment of renal lesion in extracorporeal shock wave lithotripsy].

The diagnosis and treatment of 120 patients with urolithiasis were made. The following examinations were made: the study of immune status and lipid peroxidation, detection of selective proteinuria, leukocyte migration inhibition reaction with autoantigens obtained from the tissues of the renopelvic segment providing additional information about renal parenchyma and immune system. The patients were divided into two groups: 70 patients of the study group received pre-, intra- and postoperative preventive pharmacotherapy, while 50 patients of the control group received standard therapy. It is shown that preventive measures in the patients of the study group aimed at raising resistance of the kidney to the shock wave and prevention of infectious-inflammatory process evidence for necessity of the above measures not only before extracorporeal shock wave lithotripsy, but also in intra- and postoperative periods.