Biomedical subjects
Publications and source records attributed to L B Lazebnik.
We studied the interaction between the sympathetic and parasympathetic parts of the autonomic nervous system in the regulation of smooth muscles in the femoral artery and trachea. It was shown that this regulation involves ganglionic serotoninergic neurons transmitting excitation to 5-HT, receptors in the effector tissues.
AIM: To study the count of antibodies to Helicobacter pylori (ABHP), their role in diagnosis and prognosis in gastric diseases (GD). MATERIAL AND METHODS: Enzyme immunoassay (kits from EcoLab and Vektor-Best, Russia) was used to measure serum levels of ABHP (IgG, IgA, IgM+IgG+IgA) in 46 GD patients. RESULTS: It is shown that GD are characterized by a regular rise of serum ABHP which are serological markers of Helicobacter pylori infection. Percentage and absolute value of IgG-HP were the highest (78%, mean titer 1:604 vs control 1:110) as well as (IgM+IgG+IgA) antibodies to CagA-HP (approximately 82%, mean titer 1:160 vs. control 1:10); the level of IgA-HP was elevated by 39%, mean titer 1:442, control 1:120. Elevated levels of IgG-HP reflect intensity of inflammatory processes, IgA-HP--atrophic processes, IgM+IgG+IgA)-CagA-HP--proliferative processes in GD. CONCLUSION: High concentrations of ABHP are a diagnostic criterion of HP infection, reflect intensity of infectious, inflammatory, atrophic and proliferative processes in GD. Long-term persistence of elevated ABHP concentrations is one of the indications for application of antichelicobacter therapy in GD associated with HP while ABHP fall is an additional criterion of efficacy of the treatment.
AIM: To study hepatic affection in hepatocerebral dystrophy (HCD) regarding clinical course and duration of the disease. MATERIAL AND METHODS: The records on 63 HCD patients were studied retrospectively as to early clinical symptoms, onset dynamics, biochemical tests for hepatic function, morphological changes of the liver, immune and cytokine status, markers of hepatotropic viruses. RESULTS: Six variants of HCD course were identified: hepatic (24 patients), endocrine (17 patients), neurological (12 patients), psychoemotional (5 patients), hemolytic (3 patients), renal (1 patient). Early hepatitis and hepatic cirrhosis progress were characteristic for the hepatic variant. The other variants were characterized by hepatic fibrosis, lipofuscinosis, fat dystrophy of the liver. Markers of viral hepatitides B, C, G, TT were detected primarily in patients with a hepatic variant of HCD. A moderate rise of aminotransferases, immunoglobulins, cytokines level indicate weak inflammation in hepatic tissue. Disorders in proteins synthesis, hepatic detoxication function reflect changes in the microsomal system and endoplasmic network. CONCLUSION: Hepatic lesions in HCD are different. Clinical, biochemical, morphological activity and immune status affections were most severe in patients with hepatic and endocrine variants of HCD, being the least severe in neurological, psychoemotional and hemolytic variants. Hepatotropic viruses in some patients deteriorate hepatic lesion caused by copper imbalance.
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AIM: To investigate prevalence, clinical picture and course of hepatitis C virus (HCV) infection in elderly patients. MATERIAL AND METHODS: A total of 1045 patients aged 60- 74 years with chronic diseases of the liver (CDL) were examined for hepatitis. RESULTS: HCV monoinfection was detected in 210 (20.1%) patients. Alcohol-viral etiology of HCV was revealed in 22% cases. HCV RNA was identified in 117 (76%) out of 154 elderly patients. All the HCV infected patients had 1b genotype, high viremia. Pain and asthenic syndromes were main clinical manifestations of HCV infection. Most often the activity of HCV infection in the elderly patients was low (88.6%), progression was slow (94.7%). The latter was registered in 22.8% patients. HCV infection in the elderly entails higher inflammation activity and incidence of HCV RNA. CONCLUSION: Complex examination of elderly patients for early detection of HCV, early diagnosis and treatment slows down progression of CDL, reduces the rate of development of severe complications and lethality.
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Nitric oxide is one of essential regulators of the physiological functions of the gastrointestinal tract including vascular tone, transfer of nerve impulses, protection of mucous coats, motor activity and secretion. The review of literature presents data on sources of nitric oxide, its molecular and cellular interaction, role in the genesis of different diseases of the gastrointestinal tract. The experimental and clinical material provides grounds for approaches to the regulation of this signaling pathway with the help of nitric oxide donors, activators and inhibitors of its formation, arginine, antioxidants, phosphodiesterase and guanylate cyclase inhibitors. The bibliography includes 93 references.
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GOAL OF THE STUDY: To assess the pathogenetic significance of the prostaglandin level in the mucous coat of the stomach in patients with osteoarthritis who take several types of non-steroid anti-inflammatory drugs. MATERIALS AND METHODS: The study of the E2 and F2alpha (prostaglandins levels in the blood and mucous coat of the stomach was conducted in 20 patients with stomach ulcer, 15 patients with osteoarthritis taking diclofenac and 16 patients taking celecoxib. RESULTS: It has been shown that the E2 prostaglandin level decreases both in the blood and in the mucous coat of the stomach in patients with stomach ulcer. If non-steroid anti-inflammatory drugs are taken, the E2 prostaglandin level in the mucous coat of the stomach decreases even if there are no erosive-ulcerous lesions. If celecoxib is taken, the changes in the prostaglandin E2 and F2beta level in the mucous coat of the stomach are less marked. Patients with the low content of E2 prostaglandin in the mucous coat of the stomach develop gastropathies more frequently even before non-steroid anti-inflammatory drugs are taken. CONCLUSION: Reduction of the basal prostaglandin secretion in the mucous coat of the stomach is a risk factor of non-steroid anti-inflammatory drugs gastropathy appearance. The use of selective COX-2 inhibitors makes it possible to reduce the risk of gastropathy appearance in this group of patients.
AIM: To study chondroitin sulphate (CS) efficacy, tolerance and response duration in elderly patients with osteoarthrosis (OA) with consideration of OA duration and stage. MATERIAL AND METHODS: A total of 97 patients aged 65-85 years with stage II-IV OA by Kellgren-Lawrence received CS treatment. The treatment efficacy was assessed by functional Lecken's index, pain intensity at walking and rest, general functional condition, need in nonsteroid anti-inflammatory (NSAI) drugs. Standardization was achieved with visual analogue scale (VAS). RESULTS: Positive effects (pain relief, better functional parameters, lower intake of NSAI drugs) were more pronounced and stable in patients with OA stage 1 and 2. In OA of stage 3 and 4, a beneficial effect of a 6-month CS course was unstable. Side effects were at the level of mean statistics. CONCLUSION: CS (structum) is recommended for treatment of OA stage 1-4 by Kellgren-Lawrence. Duration of the treatment depends on severity of x-ray symptoms of the disease.
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UNLABELLED: The goal of the study was to study the content of anti-Helicobacter pylori antibodies (at-HP), their diagnostic and prognostic significance for stomach polyps. MATERIALS AND METHODS: The content of anti-Helicobacter antibodies (IgG-HP; IgA-HP; IgM + IgG + IgA-CagA-HP) was determined in the blood serum by way of immune-enzyme analysis of 46 patients with stomach polyps. Such test systems as EcoLab (Elektrostal) and Vector-Best (Novosibirsk) were used. RESULTS: Stomach polyps are accompanied by a regular increase of at-HP--serologic markers of helicobacteriosis content in the blood serum. The most significant increase in terms of percentage and absolute values is the IgG-HP concentration increase (88%, average titre 1: 1060, in the control group--1: 110) and summary (IgM + IgG + IgA) antibodies to CagA-HP (86%, average titre 1 : 180, in the control group 1 : 10), while the IgA-HP level is increased in 46%, average titre 1 : 660, in the control group 1 : 120). The IgG-HP content increase reflects the inflammatory process intensity, IgA-HP--atrophic process intensity, (IgM + IgG + IgA)-CagA-HP--1 intensity of proliferative processes of stomach polyps. CONCLUSION: The at-HP content increase is a diagnostic criterion for helicobacteriosis and reflects the intensity of infectious, inflammatory, atrophic and proliferative processes in cases of stomach polyps. A multiple long-lasting increase of the at-HP concentration may be one of the indications for administering an antihelicobacter stomach polyp therapy including administration before polypectomy.
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AIM: To compare cytokine status in gastrointestinal diseases (GID) with reference to etiological factor, course, stage, therapy of the disease. MATERIAL AND METHODS: Enzyme immunoassay was used to examine cytokines in the peripheral blood, tissue homogenates of 560 GID patients. GID were represented by ulcer disease (UD), cholelithiasis, chronic hepatitis (CH), glutenic enteropathy (GE), Crohn's disease (CD), nonspecific ulcer colitis (NUC). RESULTS: In chronic recurrent GID (UD, cholelithiasis, GE) early exacerbation was characterized by elevated concentrations of IL-1 beta, IL-6, IL-8. Concentrations of IL-12, Inf alpha, g, TNF alpha reached maximum on the height of the disease. Intensification of regenerative processes raised concentrations of IL-4, IL-10. An overall level of serum cytokines averaged 190-780 pg/ml, reaching in some patients with active disease 1200-3000 pg/ml, in remission 30-110 pg/ml, in the control 40 pg/ml. In chronic progressive GID the levels of IL-1 beta, IL-2, IL-8, IL-6 reached 30-80 pg/ml, IL-12, Inf gamma, TNF alpha--150-370 pg/ml. A rise in cytokines concentrations in inflammatory viral, bacterial, autoimmune GID was higher than in cancer, alcoholism-related diseases, metabolic disturbances. Basic therapy in patients with chronic recurrent GID led to a significant fall in concentration of serum cytokines. Therapy with monoclonal antibodies to TNF alpha was associated with transitory pronounced favourable changes in peripheral blood cytokine status. CONCLUSION: GID provoke elevation of serum and tissue cytokines, impairment of cytokine balance in correlation with the etiological factor, variants of the course, stage of the disease, on-going therapy.
Atrial fibrillation (AF) is an independent risk factor for ischemic stroke. In patients with AF, cardioembolias present about 10% of ischemic strokes. Transesophageal echocardiography is an ideal instrument for diagnostics of intracardiac thrombi. An aim of the study was to find the high risk markers for stroke in patients with AF of non-valvular origin. The patients have been divided into 2 groups with and without stroke in anamnesis. To search for stroke dependence of clinical and echocardiographic high risk markers, the data were analyzed using Poly Analyst Power statistical package. In the group of the patients with stroke in the anamnesis, echocardiographic markers for high risk of thromboembolia occurred significantly more frequently. Thrombi in the left atrial or its appendage were registered in 12.5% patients without stroke in anamnesis and in 31% of those, who survived stroke. The independent risk factors for stroke were age, AF duration, left ventricular ejection fraction, diabetes mellitus and arterial hypertension.
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