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Biomedical subjects

V V Kozlov

Publications and source records attributed to V V Kozlov.

18 recordsLinked to original sources
PubMed1992

[The effect of pathogenetic therapy on the expression of endogenous intoxication in patients with chronic glomerulonephritis].

The content of medium-sized molecules (MSM) in the blood serum was measured in 52 patients with exacerbation of chronic glomerulonephritis (CGN) given pathogenetic therapy. All the patients manifested an initial rise of the content of MSM. Administration of cytostatics and (or) glucocorticoids led to the regression of the nephrotic syndrome in 32 patients. In 20 patients, it was ineffective. All the patients in whom the treatment appeared effective demonstrated the lowering of the content of MSM 2 weeks after the treatment initiation, which outstripped the dynamics of the other parameters characteristic of CGN exacerbation. At the same time the urinary clearance of MSM remained unchanged. The patients in whom the pathogenetic therapy turned out ineffective manifested an increase of the blood content of MSM and of the urinary clearance of these substances. It is suggested that the test with the detection of the urinary clearance and the content of MSM in the blood serum may be used before the treatment and 2 weeks after its initiation to early estimate the treatment efficacy. The prognostic value of the positive test is 82%, that of the negative 80%. It is assumed that the mechanism that triggers the increase of the rate of MSM generation may lie in lipid peroxidation activation.

Chronic Disease↗
PubMed1991

Species-nonspecific action of soluble immunosuppressive factor produced by murine immature erythroid cells.

Immature murine erythroid cells have natural suppressor cell activity suppressing in vitro mouse plaque-forming cell response and LPS-stimulated proliferative response of mouse spleen cells. A cell population enriched by erythroid precursors can produce a soluble activity with similar suppressive abilities. This erythroid suppressor activity (ErSF) has a low Mr (1 to 10 kDa). It can suppress both IgM and IgG secretion of PWM-stimulated human B cells and inhibit the proliferative response of PWM-stimulated human B lymphocytes, thereby indicating a species-nonspecific type of action. Antigen-induced mouse PFC response and mitogen-stimulated mouse and human B cell proliferation were inhibited dose dependently by the addition of ErSF, which did not significantly reduce cell viability, however. Kinetic studies showed that ErSF suppressed Ig secretion and proliferation of mitogen-stimulated B lymphocytes in all culture periods. The suppressive effect of ErSF on B cell proliferation was indirect, requiring the presence of IL-2 (but not of IL-1 alpha, IL-1 beta, or BCGF). In the presence of IL-2, the proliferative response of SAC-stimulated B cells was suppressed by ErSF when added at all time intervals studied but was maximal when ErSF was added on the third day of culture. The role of suppressor factor produced by immature murine erythroid cells in the phenomenon of "natural suppression" has been discussed.

Animals↗
PubMed1991

[The factors that determine the manifestation of uremic poisoning during the development of chronic kidney failure].

To specify factors determining the intensity of uremic intoxication, 86 patients with chronic glomerulonephritis were examined without regard for exacerbation at different stages of chronic renal failure. Microcolumn gel chromatography was used to measure the content of medium-size molecules in the blood serum, urine, gastric and intestinal juice of the patients and 22 mongrel dogs before and after bilateral nephrectomy. It has been established that as the mass of acting nephrons decreases, the content of "medium-size" molecules in the blood serum and intestinal juice rises, being unchanged in gastric juice. At the same time the urinary clearance of the given group of substances declines. It is assumed that in stage I chronic renal failure, enhancement of the excretion of "medium-size" molecules in the proximal third of the small intestine is made for by hyperfiltration of intact nephrons. The appearance of the clinical symptomatology in stage II and III chronic renal failure is determined by intensification of absorption of uremic toxins by the intestine, associated with a fall of their urinary clearance. The necessity of early administration of the low-protein diet combined with enterosorbents is stressed.

Animals↗
PubMed1990

[Cardiohemodynamics and microcirculation in patients with ischemic heart disease undergoing beta-adrenergic receptor stimulation and blockade].

A study of 76 patients with ischemic heart disease is presented who revealed during coronography stenosis of one-three coronary arteries equalling 50-75% of the vessel lumen. Analysis of the effect of anaprilin and nonachlazin on the clinical course and hemodynamics revealed that in patients with initial coronary atherosclerosis of middle age beta-adrenodependent vasodilation of the coronary arteries decreased. In these patients anaprilin may increase the frequency of attacks of spontaneous stenocardia. On the contrary, nonachlazin reduces manifestations of stenocardia but it may be used only in patients with a high tolerance to physical load.

Adrenergic beta-Agonists↗
PubMed1990

[The effect of acetate and bicarbonate hemodialysis on protein and lipid metabolism in patients with chronic kidney failure].

In 26 patients with chronic renal failure undergoing hemodialysis, use was made of an acetate solution (40 mmol/l) and in 7 patients, of a bicarbonate solution (35 mmol/l). The control group was made up of 20 healthy volunteers. In addition to better tolerance, the bicarbonate dialysis favoured adequate correction of acid-base balance, normalization of hypercholesterolemia, lowering of the rate of protein degradation. Among patients on the acetate dialysis, subgroups with normal (9 persons) and delayed (17 persons) acetate utilization were distinguished. A close relationship was discovered between blood acetate concentration before procedure and the rate of urea generation (r = +0.79, p less than 0.05). It is assumed that the acetate dialysis intolerance is determined by protein hypercatabolism under the conditions of delayed utilization of acetate by the peripheral tissues.

Acetates↗
PubMed1978

Globin synthesis by nucleated erythroid cells in chronic glomerulonephritis.

Globin synthesis rate (GSR) by nucleated erythroid cells was investigated in 40 patients suffering from chronic glomerulonephritis, in 24 subjects with other renal diseases and in 8 healthy controls. GSR was reduced in nephrogenic anemia; moreover, this reduction took place in a few patients without anemia. The correlation between GSR and some characteristics of erythropoiesis was examined. The supression of GSR is probably one of the important causes of nephrogenic anemia.

Acute Disease↗
PubMed1976

[Diagnosis and surgical treatment of relative valvular insufficiency of deep veins of the lower limbs].

The experimental and clinical findings obtained by the authors have evidenced the rationale of using an autovein or large femoral fascia for application of a cuff. While using synthetic materials, some cases of venous thrombosis under a cuff were observed. Late results of the operation during 2-5 years were followed up in 25 patients, 13 of them had crural ulcers. No varicosity and ulcers were noted in outpatient examination.

Animals↗
PubMedDate not supplied

[Enterosorption in experimental acute kidney failure].

The paper provides the results of 32 experiments on 22 mongrel male dogs with a view to measuring creatinine levels in the lumen of various intestinal segments before and after bilateral nephrectomy and evaluating the effects the enterosorbent brand SKN administered into isolated portions of the intestinal tube on alteration of intraluminal concentrations of creatinine, serum creatinine, and "middle-sized" molecules. Four parts of the intestine were identified: (1) proximal; (2) middle and (3) distal portions of the small intestine, and (4) the large intestine up to the anal sphincter. Two days following bilateral nephrectomy, creatinine levels were increased in the proximal, middle, distal portions of the small bowel and in the large bowel by 18, 11, 5, and 1.4 times, respectively, as compared to the baseline creatinine concentration in the intestinal parts mentioned. The administration of the enterosorbent into the different intestinal parts revealed that with its 6-hour exposure, the most potent effect (lower concentrations of creatinine and "middle-sized" molecules in serum) was observed in the proximal portions of the small bowel. This phenomenon is likely to be attributable to greater vascularization and the maximal creatinine and "middle-sized" molecule concentration in these intestinal portions. With this, it was shown that the higher baseline concentrations of serum creatinine and "middle-sized" molecules were, the more actively they absorbed on the charcoal enterosorbent brand SKN in the intestine.

Acute Kidney Injury↗