scholarly journals Features of pulmonary haemodynamics and endothelium function in children with asthma

2007 ◽  
pp. 56-59
Author(s):  
E. A. Starovoytova ◽  
S. N. Ivanov ◽  
L. M. Ogorodova
Keyword(s):  
Right Ventricle ◽  
Severe Asthma ◽  
Systolic Pressure ◽  
Pulmonary Artery Systolic Pressure ◽  
Control Group ◽  
Pulmonary Hemodynamics ◽  
Vasomotor Function ◽  
Ultrasound Evaluation ◽  
Endothelium Function ◽  
Asthma Patients

Asthma patients (n = 79, 7 to 17 years of age) were divided into 3 groups according to asthma severity: mild (n = 23), moderate (n = 24), and severe asthma (n = 32). Asthma was diagnosed according to GINA (2002). Echocardiography, ultrasound evaluation of endothelium vasomotor function and measurement of nitrite anion concentration in exhaled breathe condensate (EBC) were performed in the all patients. Right ventricle dilatation and increase in the total pulmonary vascular resistance were revealed only in patients with severe asthma compared to the control group. Increase in pulmonary artery systolic pressure was significantly higher in the severe asthma patients compared both to the control group and mild asthma patients. Increased right ventricle pressure was accompanied by endothelium dysfunction in 48.1 % (38 patients). High EBC nitrite anion concentration (12.11 ± 1.72 μmol/L) was revealed in asthmatic children compared to control group (3,34 ± 1,58 μmol/L). The results suggest that childhood asthma is associated with morphological and functional abnormalities of pulmonary hemodynamics and endothelium function depending on severity of the disease.

Relationship between Invasive and Non-Invasive Hemodynamic Measures in Experimental Pulmonary Hypertension

2020 ◽  
Vol 16 (1) ◽  
pp. 47-53
Author(s):  
Vicente Benavides-Córdoba ◽  
Mauricio Palacios Gómez
Keyword(s):  
Heart Rate ◽  
Pulmonary Hypertension ◽  
Ejection Fraction ◽  
Right Ventricle ◽  
Correlation Coefficient ◽  
Pearson Correlation ◽  
Systolic Pressure ◽  
Control Group ◽  
Pearson Correlation Coefficient ◽  
Non Invasive

Introduction: Animal models have been used to understand the pathophysiology of pulmonary hypertension, to describe the mechanisms of action and to evaluate promising active ingredients. The monocrotaline-induced pulmonary hypertension model is the most used animal model. In this model, invasive and non-invasive hemodynamic variables that resemble human measurements have been used. Aim: To define if non-invasive variables can predict hemodynamic measures in the monocrotaline-induced pulmonary hypertension model. Materials and Methods: Twenty 6-week old male Wistar rats weighing between 250-300g from the bioterium of the Universidad del Valle (Cali - Colombia) were used in order to establish that the relationships between invasive and non-invasive variables are sustained in different conditions (healthy, hypertrophy and treated). The animals were organized into three groups, a control group who was given 0.9% saline solution subcutaneously (sc), a group with pulmonary hypertension induced with a single subcutaneous dose of Monocrotaline 30 mg/kg, and a group with pulmonary hypertension with 30 mg/kg of monocrotaline treated with Sildenafil. Right ventricle ejection fraction, heart rate, right ventricle systolic pressure and the extent of hypertrophy were measured. The functional relation between any two variables was evaluated by the Pearson correlation coefficient. Results: It was found that all correlations were statistically significant (p <0.01). The strongest correlation was the inverse one between the RVEF and the Fulton index (r = -0.82). The Fulton index also had a strong correlation with the RVSP (r = 0.79). The Pearson correlation coefficient between the RVEF and the RVSP was -0.81, meaning that the higher the systolic pressure in the right ventricle, the lower the ejection fraction value. Heart rate was significantly correlated to the other three variables studied, although with relatively low correlation. Conclusion: The correlations obtained in this study indicate that the parameters evaluated in the research related to experimental pulmonary hypertension correlate adequately and that the measurements that are currently made are adequate and consistent with each other, that is, they have good predictive capacity.

scholarly journals Ubiquinol ameliorates endothelial dysfunction and increases expression of miRNA-34a in a rat model of pulmonary hypertension

2021 ◽  
Vol 7 (3) ◽  
pp. 23-31
Author(s):  
Tatyana A. Kuropatkina ◽  
Nadezda V. Pankova ◽  
Natalia A. Medvedeva ◽  
Oleg S. Medvedev
Keyword(s):  
Pulmonary Hypertension ◽  
Right Ventricle ◽  
Pulmonary Arteries ◽  
Systolic Pressure ◽  
Alcohol Solution ◽  
Control Group ◽  
Lung Weight ◽  
Male Wistar Rats ◽  
Pulmonary Changes ◽  
Ventricle Hypertrophy

Introduction: In this research, we evaluate the effect of intravenously administrated solubilized ubiquinol on 4-week monocrotalin-induced pulmonary hypertension (PH) in rats. Materials and methods: To reproduce the model, some male Wistar rats were subcutaneously injected with alcohol solution of monocrotaline 60 mg/kg and the rest – with alcohol solution (Control). Those with monocrotaline (MCT) were divided into 3 groups. They underwent intravenous administration of 1% ubiquinol solution 30 mg/kg (MCT-Ubiquinol), the vehicle (MCT-Vehicle) and saline (MCT-saline) three times on days 7, 14 and 21, depending on the group. The hemodynamic parameters were measured in anesthetized rats on day 29. Right ventricle hypertrophy, pulmonary arteries reactivity and expression of miRNA-21 and miRNA-34a were estimated after euthanasia. Results and discussion: All MCT-groups demonstrated an increase in right ventricle systolic pressure and hypertrophy in comparison with the control group. An increase in lung weight was shown in MCT-Vehicle and MCT-Saline; however, the MCT-Ubiquinol indicators did not differ from those of the Control. There was an increased vasodilatation response to acetylcholine at concentrations of 1*10-6M and 1*10-5M in MCT-Ubiquinol in contrast to the other two MCT-groups. A significantly lower level of expression of miRNA-34a was observed in MCT-Ubiquinol. Conclusion: Our findings suggest that a triple ubiquinol injection influences pulmonary changes and endothelium-depended vasodilatation, which contributes to pulmonary vascular tone and reactivity. A decrease in miRNA-34a expression in MCT-Ubiquinol group demonstrates the ubiquinol anti-inflammatory properties.

P5412Prevalence of RV failure assessed by echocardiography in acute dyspnoea cohort

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
K Cerlinskaite ◽  
J Bugaite ◽  
D Gabartaite ◽  
D Verikas ◽  
A Krivickiene ◽  
...  
Keyword(s):  
Heart Failure ◽  
Pulmonary Hypertension ◽  
Right Ventricle ◽  
Acute Heart Failure ◽  
Inferior Vena ◽  
Vena Cava ◽  
Systolic Pressure ◽  
Pulmonary Artery Systolic Pressure ◽  
Heart Failure Patients ◽  
Acute Dyspnoea

Abstract Introduction Recently more attention has been placed on right ventricle (RV) parameters in acute settings. The present study investigates echocardiographic RV parameters in patients with acute heart failure (AHF) or non-AHF acute dyspnoea. Purpose To determine the patterns of RV injury in different profiles of acute dyspnoea. Methods Prospective multicentre observational study included 1455 acutely dyspnoeic patients from 2015 to 2017. RV focused echocardiography was performed during the first 48 hours in 452 (31%) patients. They were compared in three patient profiles based on cause of dyspnoea and history of chronic HF (CHF): 1) AHF; 2) Non-AHF with CHF (Non-AHF+CHF); 3) other non-AHF patients (Non-AHF+other). Results Significant differences in RV morphology and function were observed in the study groups (Table 1). RV global function assessed by tricuspid annular plane systolic excursion (TAPSE) and RV longitudinal shortening was mostly affected in AHF patients. This was accompanied by more enlarged RV and increased right atrial pressure (RAP), assessed by the inferior vena cava diameter and respiratory collapse. Less severely impaired RV function and increased RAP were also observed in non-AHF+CHF patients indicating RV involvement in the chronic disease. Normal RV parameters dominated in Non-AHF+other group, however pulmonary artery systolic pressure >40 mmHg was observed in all profiles, suggesting similar severity of pulmonary hypertension in cardiac or pulmonary causes of acute dyspnoea. Table 1. RV parameters in acute dyspnoea profiles Parameter AHF (n=291) Non-AHF + CHF (n=73) Non-AHF + other (n=88) p value LVEF, % 38 [25–55] 50 [40–55] 55 [50–55] <0.001 RV basal diameter, cm 4.5 [3.9–5.2] 4 [3.5–4.5] 4 [3.5–4.55] <0.001 TAPSE, cm 1.5 [1.2–1.8] 1.8 [1.6–2] 2 [1.5–2.4] <0.001 RV free wall strain, -% −15.3 [−19; −11.24] −19.3 [−24.5; −15.78] −23 [−24.5; −19.69] <0.001 Entire RV strain, -% −12.03 [−15.17; −9.11] −16.4 [−19.31; −10.5] −18 [−18.75; −16.9] <0.001 PASP >40, % 66% 51% 50% 0.039 IVC diameter, cm 2.4 [2–2.8] 2 [1.7–2.4] 1.8 [1.4–2.3] <0.001 IVC collapse, % 34.9 [19.7–50.2] 44.1 [28.7–59.3] 52.6 [35–72.7] <0.001 LVEF, left ventricular ejection fraction; RV, right ventricle; TAPSE, tricuspid annular plane systolic excursion; PASP, pulmonary artery systolic pressure; IVC, inferior vena cava; AHF, acute heart failure; CHF, chronic heart failure. Conclusions Our data confirm more pronounced acute failure of right ventricle in acute heart failure patients than in chronic heart failure patients admitted due to other causes of dyspnoea. Pulmonary hypertension is present in a majority of the acute dyspnoea patients. Acknowledgement/Funding The work was supported by the Research Council of Lithuania, grant Nr. MIP-049/2015 and approved by Lithuanian Bioethics Committee, Nr. L-15-01.

Abstract 15011: Association of Pulmonary Hemodynamics and Right Ventricular Function With Incident Atrial Fibrillation: The Atherosclerosis Risk in Communities (ARIC) Study

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Romil R Parikh ◽  
Faye L Norby ◽  
Wendy Wang ◽  
Thenappan Thenappan ◽  
Kurt W Prins ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Right Ventricular ◽  
Systolic Pressure ◽  
Left Ventricular ◽  
Cox Proportional Hazards ◽  
Volume Index ◽  
Pulmonary Artery Systolic Pressure ◽  
Pulmonary Hemodynamics ◽  
Functional Remodeling ◽  
Rv Function

Introduction: Higher pulmonary artery systolic pressure (PASP) and right ventricular (RV) dysfunction are associated with higher risk of heart failure (HF) and mortality. Whether higher PASP and lower RV function are associated with risk of atrial fibrillation (AF) is unclear. Hypothesis: Higher PASP, higher pulmonary vascular resistance (PVR), and lower RV function are associated with incident AF after accounting for left atrial (LA) size and function, and left ventricular (LV) systolic and diastolic function. Methods: ARIC participants free of prevalent coronary heart disease (CHD), HF, AF, and with LA volume index (LAVi) <34ml/m 2 and average E/e’ ratio <14 in 2011-13 were included. We measured PASP, PVR, RV fractional area change (RVFAC), and RV-PA coupling (defined as RVFAC/PASP ratio) from 2D-echocardiograms. Incident AF (through 2018) was ascertained from hospital discharge codes and death certificates. We used Cox proportional hazards regression in our analysis. Results: We included 1915 participants (mean age 75 years, 69% female, 24% black) of whom 176 developed AF over a median follow-up of 6.3 years. PASP, PVR, and RV-PA coupling were significantly associated with incident AF after adjusting for measures of LA and LV structural and functional remodeling. RVFAC was not significantly associated with incident AF. Conclusions: In persons without CHD, HF, and LA enlargement, higher PASP and lower RV-PA coupling are associated with higher risk of AF after accounting for LA and LV structural and functional remodeling. This finding, which suggests a possible etiological role of RV remodeling for AF, needs further confirmation.

scholarly journals Sympathetic innervation of canine pulmonary artery and morphometric and functional analysis in dehydromonocrotaline-induced models after pulmonary artery denervation

2020 ◽  
Vol 31 (5) ◽  
pp. 708-717
Author(s):  
Xiaomin Jiang ◽  
Juan Zhang ◽  
Ling Zhou ◽  
Jie Luo ◽  
Jinsong Wang ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Pulmonary Artery ◽  
Sympathetic Nerve ◽  
Nerve Conduction ◽  
Nerve Conduction Velocity ◽  
Sympathetic Innervation ◽  
Systolic Pressure ◽  
Pulmonary Artery Systolic Pressure ◽  
Control Group ◽  
Mean Pressure

Abstract OBJECTIVES We aimed to describe the anatomic distribution of periarterial pulmonary sympathetic nerves and to observe the long-term morphometric and functional changes after pulmonary artery denervation (PADN), a novel therapy for pulmonary arterial hypertension (PAH). METHODS A total of 45 beagles were divided into a sympathetic innervation group (n = 3, 33.3% were females), a PAH group (n = 35, 34.3% were females) and a control group (n = 7, 28.5% were females). The PAH group was randomly divided into no-PADN (n = 7), instant-PADN (n = 7), 1M-PADN (n = 7), 2M-PADN (n = 7) and 3M-PADN (n = 7) subgroups. The sympathetic innervation group was sacrificed to reveal the sympathetic innervation of pulmonary arteries. PAH was induced by injecting dehydromonocrotaline (DHMCT) through the right atrium. The pulmonary capillary wedge pressure, right ventricular systolic pressure, right ventricular mean pressure, pulmonary artery systolic pressure and pulmonary artery mean pressure of each group were continuously measured. The cardiac output was detected to calculate the pulmonary vascular resistance. PAH and control groups were subjected to immunofluorescence assay, sympathetic nerve conduction velocity measurement and transmission electron microscopy. RESULTS The no-PADN group had significantly higher PVSP, PVMP, pulmonary artery systolic pressure, pulmonary artery mean pressure and pulmonary vascular resistance but lower cardiac output than those of the control group (P &lt; 0.05). Instant-PADN, 1M-PADN, 2M-PADN and 3M-PADN groups had significantly lower PVSP, PVMP, pulmonary artery systolic pressure, pulmonary artery mean pressure and pulmonary vascular resistance but higher cardiac output than those of the no-PADN group (P &lt; 0.05). Most sympathetic nerves were located within 2.5 mm of the intimae of the bifurcation and proximal trunk, mainly in the left trunk. The diameter and cross-sectional area of myelinated fibres in the PAH group were significantly larger than those of the control group. Sympathetic nerve conduction velocity of the PAH group gradually decreased, and nerve fibres were almost demyelinated 3 months after PADN. CONCLUSIONS PADN effectively relieved dehydromonocrotaline-induced canine PAH and decreased sympathetic nerve conduction velocity.

scholarly journals CYTOKINES PROFILE IN BLOOD IN SEVERE ASTHMA PATIENTS WITH OBESITY

2013 ◽  
Vol 10 (6) ◽  
pp. 13-19
Author(s):  
E A Sobko ◽  
I A Soloveva ◽  
O P Ischenko ◽  
A Y Kraposhina ◽  
I V Demko ◽  
...  
Keyword(s):  
Severe Asthma ◽  
Bronchial Asthma ◽  
Systemic Inflammation ◽  
Peripheral Blood ◽  
Proinflammatory Cytokine ◽  
Control Group ◽  
Obese Patients ◽  
Asthma Patients ◽  
Ifn Γ ◽  
Inflammation Signs

Background. To study the cytokines profile in the peripheral blood of patients with severe asthma and obesity. Methods.139 patients with severe bronchial asthma have been examined, including 66 patients with severe bronchial asthma and body mass index (BMI) 30 (2nd group). The control group was formed from 40 healthy volunteers. The respiratory function, the cytokine integral index and the levels of TNFα, IL4, IL6, IL2, IL10, IFN-γ, IL8, IL17 in the peripheral blood of patients in and out of an exacerbation were studied. Results. More significant systemic inflammation signs expressed in increased levels of TNFα, IL6, IL4, IL2 and IFN-γ were found in exacerbation period of the disease. In obese patients the increased level of proinflammatory cytokine IL17 in exacerbation period was estimated. Conclusion. We have demonstrated the presence of systemic inflammation in patients with severe BA, regardless of the presence of obesity, increased level of proinflammatory cytokine IL17 in patients with severe bronchial asthma and obesity in the period of exacerbation. It can be a reason of the low effect of steroid therapy in patients with BMI >30.

scholarly journals The cardiovascular system in patients with functional and inflammatory bowel diseases

2018 ◽  
Vol 90 (2) ◽  
pp. 59-64
Author(s):  
I V Maev ◽  
A N Kazulin ◽  
D N Andreev
Keyword(s):  
Right Ventricle ◽  
Cardiovascular System ◽  
Inflammatory Bowel Diseases ◽  
Right Atrium ◽  
Systolic Pressure ◽  
Clinical Manifestations ◽  
Control Group ◽  
Bowel Diseases ◽  
Inflammatory Bowel ◽  
The Right

Aim. Identification of subclinical and metamanifests state changes of cardiovascular system in patients with functional and inflammatory bowel diseases (IBD) without a background of cardiac pathology. Materials and methods. Was examined 79 patients with colon diseases, 20 patients were diagnosed with irritable bowel syndrome (IBS) with diarrhea, 37 - with undifferentiated colitis (UdC) and 22 patients with ulcerative colitis (UC). As a control group were examined in 50 healthy subjects. All patients received treatment in accordance with international and national guidelines. Prescribed medications had effect on the function of the cardiovascular system. Patients with contacting the hospital and against the onset of remission was performed ultrasound of the heart. Determines the size of the left atrium, heart rate, end-diastolic volume, end-systolic volume, ejection fraction (EF), cardiac index (CI), total peripheral vascular resistance, the presence of right heart failure, blood flow, the area of the right atrium and right ventricle in systole and diastole, and calculated the proportion of contractility of the right atrium and right ventricle. Determined systolic pressure in PA (SPPA), the average pressure in PA (APPA). Results. Clinical manifestations of cardiac syndrome was identified in 75,0% of patients with IBS, 54,1% of patients NK and 68,2% patients with UC. When performing correlation analysis in the patients with UdC and UC was noted the relationship of hemodynamic parameters and disease severity was more pronounced in UC. So, when comparing the duration of the disease and levels of the MLC - r=0,52 and r=0,73 (p

Effects of chronically elevated pulmonary arterial pressure and flow on right ventricular afterload

1994 ◽  
Vol 267 (1) ◽  
pp. H155-H165 ◽  
Author(s):  
B. Ha ◽  
C. L. Lucas ◽  
G. W. Henry ◽  
E. G. Frantz ◽  
J. I. Ferreiro ◽  
...  
Keyword(s):  
Pulmonary Hypertension ◽  
Arterial Pressure ◽  
Right Ventricle ◽  
Pulmonary Arterial Pressure ◽  
Systolic Pressure ◽  
Arterial Blood Flow ◽  
Pulmonary Hemodynamics ◽  
Reflected Wave ◽  
Arterial Blood ◽  
Pulmonary Arterial

The effects of pulsatile hemodynamics on right ventricle-pulmonary circulation interactions were studied in control lambs and in two lamb models of altered pulmonary hemodynamics induced at infancy: elevated pulmonary arterial pressure (PAP) was created by the infusion of monocrotaline pyrrole (MCTP), and elevated pulmonary arterial blood flow was obtained by the creation of an arteriovenous fistula (Shunt). High-fidelity PAP, midvessel Doppler blood velocity (PAV), and cardiac output (CO) were measured in open-chest, anesthetized lambs. PAV waveforms were normalized to match the measured CO. Measured pressure and flow signals were separated in the time domain into forward and backward components. Pulmonary input impedance and indexes quantifying the timing of the reflected wave pulse (beginning of reflected pulse, duration of reflected pulse in systole, and duration of reflected wave in diastole) were calculated for each group. Results indicate that in control animals the reflected wave returned late in systole and extended through much of diastole, thereby increasing diastolic pressure like a counterpulsation balloon. No significant differences in the timing indexes were found between Shunt and control animals. In the MCTP group, the reflected wave returned significantly earlier than normal with the peak reflected pulse occurring before valve closure. The resulting augmentation of systolic pressure and, therefore, large pulse pressure is consistent with pressure waveforms observed in clinical pulmonary hypertension. We conclude that early wave reflection exerts a detrimental effect in pulmonary hypertension by unfavorably loading the still-ejecting right ventricle.

scholarly journals Dynamics of the clinical functional and hemodynamic profile of patients with pulmonary arterial hypertension with initial monotherapy with endothelin receptor antagonists: bosentan vs. macitentan

Kardiologiia ◽  
2020 ◽  
Vol 60 (7) ◽  
pp. 28-35
Author(s):  
T. V. Martynyuk ◽  
A. M. Aleevskaya
Keyword(s):  
Pulmonary Arterial Hypertension ◽  
Treatment Group ◽  
Pulmonary Artery ◽  
Arterial Hypertension ◽  
Systolic Pressure ◽  
Pulmonary Artery Systolic Pressure ◽  
Eisenmenger Syndrome ◽  
Pulmonary Hemodynamics ◽  
Cardiothoracic Ratio ◽  
Pulmonary Arterial

Aim To compare results of 24-h treatments with bosentan and macitentan by the clinical functional status and indexes of pulmonary hemodynamics in patients with pulmonary arterial hypertension (PAH).Materials and methods Based on the Russian National Registry (NCT03707561), 44 patients older than 18 years with PAH (34 patients with idiopathic pulmonary hypertension (IPH) and 10 patients with Eisenmenger syndrome) were retrospectively included into this study. Based on the statistical method of pairwise comparison, two groups were formed and matched by age, gender, WHO functional class (FC), and 6-min walk distance (6MWD). 22 patients of group 1 (17 with IPH and 5 with Eisenmenger syndrome) were treated with macitentan 10 mg/day, and 22 patients of group 2 (17 with IPH and 5 with Eisenmenger syndrome) were treated with bosentan 250 mg/day. Clinical instrumental data (6MWD, Borg dyspnea score, chest X-ray, transthoracic echocardiography (EchoCG), and right heart catheterization (RHC)) were evaluated at baseline and after 24 weeks of therapy.Results By week 24 of the treatment, FC and 6MWD improved in both groups. The macitentan treatment was associated with a significant decrease in Borg score. Significant intergroup differences in EchoCG data were not observed. The bosentan treatment was associated with a decrease in right ventricular (RV) dimension and a tendency towards a decrease in calculated pulmonary artery systolic pressure (PASP). By week 24, the macitentan treatment as compared to the bosentan treatment, was associated with a decrease in cardiothoracic ratio (CTR). In both groups, RHC showed decreases in PASP, mean pulmonary artery pressure and pulmonary vascular resistance, and improvements in cardiac output (CO), cardiac index, and stroke volume (SV) values. By week 24, the increase in SV was greater in the macitentan treatment group than in the bosentan treatment group (р=0.05).Conclusion The 24-week treatment with bosentan or macitentan provided significant and comparable improvement of the functional profile in PAH patients with FC II (WHO) at baseline. The decrease in CTR was significantly more pronounced in the macitental treatment group compared to the bosentan treatment group. The 24-week bosentan treatment resulted in a decrease in RV anterior-posterior dimension, a tendency towards a decrease in PASP according to EchoCG data. Macitentan provided more pronounced dynamics of dyspnea than bosentan according to the results of 6MWD test and the increase in SV according to RHC data.

MYCOPLASMA AND CHLAMYDIA AS ETHIOLOGICAL FACTORS OF BRONCHIAL ASTHMA IN TERMS OF ETHNOGENESIS

2013 ◽  
Vol 68 (7) ◽  
pp. 57-60
Author(s):  
O. A. Sharavii ◽  
S. V. Smirnova
Keyword(s):  
Immune Response ◽  
Chlamydia Trachomatis ◽  
Blood Serum ◽  
Bronchial Asthma ◽  
Mycoplasma Hominis ◽  
Acute Stage ◽  
Control Group ◽  
Clinical Markers ◽  
Chlamydophila Psittaci ◽  
Asthma Patients

 Aim. The study of the prevalence and clinical peculiarities of Mycoplasmosis and Chlamydiosis in patients with different pathogenic forms of bronchial asthma (BA) taking into account ethnicity of a patient. Subjects and Methods. The research covered 239 subjects – both the Europeoids and the Mongoloids in the city of Krasnoyarsk and the town of Kyzyl, all of them being BA patients of different stages, including acute stage and practically healthy. We had determined antigens Mycoplasma pneumoniae, Mycoplasma hominis, Chlamydophila pneumoniae, Chlamydophila psittaci and Chlamydia trachomatis in smears of mucosa of pharynx and antibodies to these antigens in peripheral blood serum. Results.  We found high frequency of Mycoplasmosis and Chlamydiosis in the inhabitants of Eastern Siberia, BA patients with different pathogenic forms as compared to control group. We had determined ethnic peculiarities of specific immune response: IgM to М. pneumoniae was revealed in the Europoids more frequently than in the Mongoloids, but IgM to С. pneumoniae and to C. trachomatis, C. trachomatis antigens had been revealed more often in the Mongoloids than in the Europoids. We accepted as clinical equivalents of Mycoplasmosis and Chlamydiosis diagnostics the following signs: temperature around 37C (subfebrile temperature), non-intensive but stable coughing with scanty mucous and muco-purulent sputum, dyspnea of mixed character. Conclusions. Mycoplasma and Chlamydia are meaningful etiologic factors of bronchial asthma. We have found the peculiarities of immune response depending on ethnicity of a patient (ethnic belonging). Clinical markers of Mycoplasmosis and Chlamydiosis should be taken into account in bronchial asthma in order to provide diagnostics timely as well as eradication of infection agents. Because of insufficient knowledge of problem of bronchial asthma related to contamination with Мycoplasma and Chlamydia we put the goal to study the frequency of Mycoplasmosis and Chlamydiosis occurrence in bronchial asthma patients and determine the characteristics clinical course of diseases. We defined antigens Мycoplasma pneumoniae, Мycoplasma hominis, Chlamydophila pneumoniaе, Chlamydophila psittaci, Chlamydia trachomatis in smears of oropharynx mucosa and antibodies to them in blood serum. 

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