Use Of Bacterial Lysates Research Articles

The effectiveness of the use of topical bacterial lysates in frequently ill children with pharyngeal tonsil hypertrophy and/or exacerbation of chronic adenoiditis

Introduction. The issue of diseases of the lymphopharyngeal ring in childhood remains extremely relevant in the outpatient practice of otorhinolaryngologists.Aim. To study the effectiveness of the use of bacterial lysates (IRS-19, Imudon) in frequently ill children with adenoid hypertrophy, exacerbation of chronic adenoiditis at the outpatient stage of treatment.Materials and methods. Examination and treatment of 67 children (35 girls and 32 boys) with hypertrophy of the pharyngeal tonsil and/or exacerbation of chronic adenoiditis at the age of 3 to 14 years (average age was 8.7 ± 6.2 years) was carried out based on two state polyclinics in Samara during the period from May 2023 to August 2023. The patients were divided into 2 groups matched by sex and age: the control group (n = 33) and the main group (n = 34), which additionally used topical bacterial lysate IRS-19 and a mixture of bacterial lysates Imudon. Complaints were assessed, ENT examination, endoscopic endonasal revision of the nasal cavity and nasopharynx, acoustic impedancemetry was performed, study of smears-prints from the structures of the pharyngeal tonsil, a serological blood test (ELISA) with the determination of IgG and IgM for herpes viruses (types I, II, IV, VI), cytomegalovirus and Epstein-Barr virus were conducted on the first day of treatment, on the 10th day of treatment and in dynamics after 3 months.Results. By the 10th day in the main group, nasal congestion decreased in 73% of cases, discharge from the anterior nasal cavity in 78% of cases; the size of adenoid vegetations decreased and reached grade I in 34.4% of cases, grade II adenoids were detected in 49.3% of cases, in the control group the size of adenoids corresponded to grade II (50.5% of cases) and grade III (34.7% of cases). In dynamics, after 3 months of observation, children in the main group, using bacterial lysates (IRS-19, Imudon), showed a significant decrease in episodes of ARVI and adenoiditis, in contrast to the control group, where the incidence was 2.3 times higher.Discussion. A significant decrease in the frequency of complaints from patients in the main group and a more pronounced decrease in the size of the pharyngeal tonsil were revealed.Conclusions. Thus, the results of the study indicate the therapeutic and preventive effectiveness of including bacterial lysates (IRS-19, Imudon) in complex therapy in children with hypertrophy of the pharyngeal tonsil and/or exacerbation of chronic adenoiditis.

EE25 Economic Evaluation on the Use of Standard Lyophilized Bacterial Lysates for Recurrent Respiratory Infections Prevention in Pediatric Patients

To develop a complete economic evaluation on the use of bacterial lysates for upper recurrent respiratory infections (URRI) prevention in pediatric patients from the Mexican national public health system.

Perspectives for the Use of Bacterial Lysates for the Treatment of Allergic Rhinitis: A Systematic Review.

Bacterial lysates (BLs) are mixtures of bacterial antigens that have been used for many decades to minimize the risk of recurrent respiratory tract infections in both pediatric and adult populations. Research on the use of BLs is also conducted in allergology. Biomedical databases were searched for articles on the use of BLs in the treatment of allergic rhinitis (AR). After rejecting ineligible articles, six remaining reports were reviewed. Based on this review, it can be concluded that adding BL to standard therapy for seasonal or perennial AR reduces the severity of nasal symptoms and the need for antiallergic medications in both children and adults. Concurrently, these formulations have a high safety profile. An analysis of studies shows that the first effects of BLs therapy appear at the earliest 2–6 weeks after the start of treatment and persist at least 3 months after treatment.

Prospects for the use of bacterial lysates in the complex therapy of chronic adenoiditis

Introduction. Adenotomy is a common surgical procedure in childhood. In children with recurrent infections of the respiratory tract, hypertrophy of the pharyngeal tonsil, a sign of lymphoproliferative syndrome of a secondary immunodeficiency state, is characterized by reduced adaptive abilities of mucosal immunity with impaired biocenosis in chronic inflammation. Pharyngeal tonsil surgery is considered stressful in frequently ill children and therefore requires preoperative preparation. In this context, it is relevant to study the nature of changes in the factors of mucosal immunity in terms of cell destruction in the nasal secretion in the complex treatment of children with hypertrophy of the pharyngeal tonsil and chronic adenoiditis, as prevention of complications in the postoperative period of adenotomy.Aim. To increase the effectiveness of the treatment of chronic adenoiditis in children with recurrent infections of the respiratory tract using the combined effect of low-frequency ultrasonic cavitation with monochromatic unpolarized light and bacterial lysates.Materials and methods. In order to test the hypothesis about the possibility of canceling adenotomy in 77 children aged 3-6 years with hypertrophy of the pharyngeal tonsil, accompanied by chronic inflammation. The effectiveness of the complex treatment was assessed by the functional and metabolic status of nonspecific resistance factors in the nasal lavage.Results and discussion. The combined effect of low-frequency ultrasonic cavitation with photochromotherapy and bacterial lysates leads to the normalization of pathophysiological changes on the surface of the mucous membrane, leading to a balance of the qualitative and quantitative composition of the functional-metabolic status of NG, which makes it possible to postpone adenotomy. The best clinical result is observed when bacterial lysates are used in complex therapy in combination with physiotherapy in children with chronic adenoiditis and, to a certain extent, substantiate the advisability of a combined effect as a non-invasive and effective method.Conclusions. Topical bacteriolysate in a complex treatment regimen for children with recurrent infections of the respiratory tract against a background of chronic inflammation eliminates bacterial antigens and enhances the intrinsic defenses of the mucous membrane of the pharyngeal tonsil.

Immunoprophylaxis of influenza, acute and recurrent respiratory infections during the COVID-19 pandemic

The article notes features of the last epidemic season (2020-2021) in the form of extremely low activity of influenza viruses with SARS-CoV-2 remaining dominant in the etiological structure of acute respiratory viral infections. Presented own data indicating the heterogeneity of SARS-CoV-2 (Alpha, Delta, B.1.1.317, B.1.1.397, B.1.1.523) isolated from hospitalized patients was noted. An increase in the etiological role of bocavirus, alpha-coronavirus and metapneumovirus with a decrease in the frequency of parainfluenza viruses, adenoviruses, rhinoviruses and respiratory syncytial virus was established. An unusual shift of the period of maximum activity of respiratory syncytial virus to the 20th week was noted. Attention is paid to the need during the ongoing pandemic COVID-19 to fully immunize children as part of the National Immunization Calendar, also emphasized the role of mandatory annual vaccination against influenza. It is noted that the maximum protective effect of immunoprophylaxis of influenza acute and recurrent respiratory infections can be achieved with a combination of vaccination with bacterial lysates. The article presents a review of the literature and our data demonstrating the safety, good tolerability, and high clinical and immunological efficiency of polyvalent mechanical bacterial lysate for the prevention of acute and recurrent respiratory infections in children. It is shown that the use of polyvalent mechanical bacterial lysate during the prevaccination period makes it possible to substantially reduce the frequency of intercurrent infections, which reduces the number of temporary medical withdrawals and increases the coverage of vaccinations against influenza in organized groups to 85.1%. The role of trained immunity as one of the possible mechanisms providing nonspecific immunoprophylaxis during influenza vaccination and the use of bacterial lysates is discussed.

Using of topical bacterial lysates in modern clinical practice

Acute and chronic infectious and inflammatory diseases of the upper respiratory tract occupy a leading position in the structure of the pathology of the world’s population and remain the most frequent reason for patients seeking medical care. The prevalence and frequency of this disease in this nosological group makes a decisive contribution to the structure of the causes of temporary disability, which entails significant negative social and economic consequences. In this aspect, the spread of resistance of pathogens to etiotropic drugs and the insufficient arsenal of pathogenetic drugs stimulate the medical community to search for alternative approaches to the treatment of patients with respiratory pathology. One of these therapeutic areas is the use of immunomodulators, the most commonly used group of which are bacterial lysates. In the modern literature, sufficiently convincing data have been accumulated on the effectiveness of the use of bacterial lysates of systemic action, as a result of which the immune cells of the gastrointestinal tract are activated, which in turn leads to the restoration of autoregulation of the immune response throughout the body, and a decrease in the frequency of infectious and allergic diseases. The latest developments of domestic pharmacologists are topical bacterial lysates, the principle of which is based on the local activation of mucosal immunity in the respiratory tract. The undoubted advantage is that bacterial lysates, with all their effectiveness, do not harm the human microbiome, practically do not cause side reactions, combine well with other drugs, and can also be used at any stage of the disease, including for prophylactic purposes.

Bacterial lysate therapy for the prevention of wheezing episodes and asthma exacerbations: a systematic review and meta-analysis.

Wheezing and asthma are a growing cause of morbidity in children and adults. Treatment is aimed at prevention of disease exacerbations and preservation of lung function. Respiratory viruses are involved in ∼40-60% of exacerbations. Bacterial lysates prevent recurrent respiratory tract infections and might reduce exacerbations. Moreover, immunomodulatory effects have been observed in human and animal studies. Here we aimed to assess the effects of bacterial lysate therapy on preschool wheezing episodes and asthma exacerbation frequency. We performed a systematic literature review based on the Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) statement and a meta-analysis using Cochrane Review Manager. Out of 2016 retrieved articles, 22 studies were included, of which five provided sufficient data for a meta-analysis.The use of bacterial lysates showed a decrease of both wheezing episodes (mean difference -2.35 (-3.03- -1.67), p<0.001) and asthma exacerbations in children (mean difference -0.90 (-1.23- -0.57), p<0.001). Additionally, antibiotic use was reduced, and the duration of wheezing episodes was also decreased. No data for adults with asthma are currently available. The immunomodulatory effect seems to be dependent on increased T-helper (Th)1-cell activation and Th2-cell suppression.These favourable effects of bacterial lysates indicate that they show promise as add-on therapy in preschool wheezing and childhood asthma.

ЭФФЕКТИВНОСТЬ ИСПОЛЬЗОВАНИЯ КОМПЛЕКСНОЙ ПРОГРАММЫ ОЗДОРОВЛЕНИЯ ДЕТЕЙ-ВОСПИТАННИКОВ ДОМА РЕБЕНКА

Изучена эффективность комплексной программы оздоровления у 75 детей, воспитывающихся в доме ребенка, в возрасте от 1,5 до 3 лет включительно. Основную группу составили 23 ребенка, получавшие комплекс оздоровительных мероприятий, в который входили: фито-чаи (лист смородины и цветки липы); сироп корня солодки; поливитаминный комплекс, а также дополнительно – водорастворимый витамин D; ультрафиолетовое облучение – общее и зоны надпочечников; массаж воротниковой зоны; лечебная физкультура; прогулки на свежем воздухе; классическая релаксирующая музыка при засыпании ежедневно. Кроме данного комплекса, основная группа получала также бактериальный лизат ОМ-85 по стандартной схеме. Группу сравнения составили 22 ребенка, получавшие только основной комплекс оздоровления, без бактериальных лизатов. Распределение по группам проводилось методом жеребьевки. Ретроспективно методом «копи-пара» сформировали группу контроля (30 детей), сопоставимую по полу, возрасту, сопутствующим заболеваниям, условиям жизни и времени года (с учетом сезонности).Установлено, что применение комплекса оздоровительных мероприятий показало снижение частоты острых респираторных инфекций, количества антибактериальных препаратов, использования антибактериальных препаратов на один случай заболевания острой респираторной инфекцией.Применение в комплексе оздоровления бактериальных лизатов позволило снизить частоту острых респираторных инфекций за год в 2,7 раза по сравнению с детьми контрольной группы, в 1,4 раза уменьшить среднюю продолжительность одного случая острой респираторной инфекции, а также снизить частоту применения антибактериальных препаратов в 5 раз.

Strategies to alter the natural history of childhood asthma.

Asthma exhibits significant heterogeneity in occurrence and severity over the lifespan. Our goal is to discuss recent evidence regarding determinants of the natural history of asthma during childhood, and review the rationale behind and status of major efforts to alter its course. Variations in microbial exposures are associated with risk of allergic disease, and the use of bacterial lysates may be a promising preventive strategy. Exposure to air pollution appears to be particularly damaging in prenatal and early life, and interventions to reduce pollution are feasible and result in clinical benefit. E-cigarette use may have a role in harm reduction for conventional cigarette smokers with asthma, but has undefined short-term and long-term effects that must be clarified. Vitamin D insufficiency over the first several years of life is associated with risk of asthma, and vitamin D supplementation reduces the risk of severe exacerbations. The identification of risk factors for asthma occurrence, persistence and severity will continue to guide efforts to alter the natural history of the disease. We have reviewed several promising strategies that are currently under investigation. Vitamin D supplementation and air pollution reduction have been shown to be effective strategies and warrant increased investigation and implementation.

Decorin binding proteins A and B in the serodiagnosis of Lyme disease in North America.

The laboratory diagnosis of Lyme disease is based upon the detection of antibodies generated against Borrelia burgdorferi using a two-tier assay, typically consisting of an enzyme-linked immunosorbent assay (ELISA), followed by a Western blot. This system, put into place to address the nonspecificity associated with standalone first-tier assays, is insensitive for diagnosing early infection, when most people seek care. The use of bacterial lysates or whole-protein antigens as first-tier assay targets contributes to nonspecificity due, in part, to the presence of cross-reactive epitopes that are also found in other bacteria. This precludes their use as sensitive standalone assays. The use of peptides containing linear epitopes that are highly specific for B. burgdorferi offers a method for reducing this cross-reactivity. In the present study, we mapped the linear epitopes of the prominently expressed Borrelia adhesins decorin binding protein A (DbpA) and DbpB. We identified several epitopes in each protein that were highly conserved among North American strains of B. burgdorferi, and we screened peptides containing specific epitopes using serum panels from early and late Lyme disease patients. The individual peptides primarily detected IgM but not IgG, while the proteins efficiently detected both IgM and IgG. While no individual peptide demonstrated better utility for antibody detection than its respective whole protein, an assay containing a combination of a DbpA and a DbpB peptide adequately detected both IgM and IgG, accurately identifying 87.5% (84/96) of the early Lyme disease patients and 80.0% (16/20) of the late Lyme disease patients.

Bacterial lysates in food allergy prevention

In the concept of food allergy prevention, no successful strategy could be identified until now. Although interventional trials using probiotics, prebiotics, hydrolyzed formula and bacterial lysates early in infancy were found to reduce the incidence of atopic dermatitis, no effect on food sensitization and allergy could be shown. Studies in a farming environment showed that early contact to livestock, bacteria and moulds may upregulate the immune responses regulated via Toll-like receptors and thus prevent allergy. There is increasing evidence that the unbalanced composition of the human microbiome on human skin and mucosal surfaces may be a key player in the development of inflammatory diseases like allergy and asthma. However, during the last 5 years, this concept could not yet be verified in the interventional trials. There are few studies using bacterial lysates, for example, Escherichia coli plus Enterococcus faecalis in ProSymbioflor and heat-killed Bifidobacterium breve and Streptococcus thermophilus; however, food allergy prevalence could not be reduced by these interventions. During the last 5 years, new interventional trials addressed the use of bacterial lysates. There was only an effect on eczema in the ProSymbioflor trial, whereas the trial using B. breve and S. thermophilus in a cow's milk formula showed a slight reduction of food sensitization at the age of 12 months. However, these strategies need further investigation and success seems to be restricted to certain subpopulations.

Prevention of respiratory tract infections with bacterial lysate OM-85 bronchomunal in children and adults: a state of the art

Respiratory tract infections (RTIs) are a leading cause of morbidity and also represent a cause of death in some parts of the world. The treatment of RTIs implies a continuous search for stronger therapies and represents an economical burden for health services and society. In this context the prevention of infections is absolutely required. The use of bacterial lysates as immuno-modulators to boost immunological response is widely debated. Aim of this review is to summarize the main clinical studies on the effect of the bacterial lysate OM-85 in treating RTIs in susceptible subjects - namely children and chronic obstructive pulmonary disease (COPD)-affected adults. Results from clinical trials and recent systematic reviews are reported. The results show that mean number of RTIs decreases upon treatment with OM-85, as measured by frequency of exacerbations or number of antibiotic courses. Data from systematic reviews indicated that OM-85 is particularly beneficial in children at high risk of RTIs. In COPD-affected adults, clinical studies showed that treatment with OM-85 reduced exacerbations, although systematic reviews did not legitimate the protective effect of OM-85 toward COPD as significant. The use of OM-85 could be efficacious in reducing exacerbation frequency of RTIs in children and adults at risk. However further high-quality studies are needed to better explain the mechanism of action and confirm the beneficial results of OM85.

Prevention of respiratory tract infections with bacterial lysate OM-85 bronchomunal in children and adults: a state of the art.

Respiratory tract infections (RTIs) are a leading cause of morbidity and also represent a cause of death in some parts of the world. The treatment of RTIs implies a continuous search for stronger therapies and represents an economical burden for health services and society. In this context the prevention of infections is absolutely required. The use of bacterial lysates as immuno-modulators to boost immunological response is widely debated. Aim of this review is to summarize the main clinical studies on the effect of the bacterial lysate OM-85 in treating RTIs in susceptible subjects - namely children and chronic obstructive pulmonary disease (COPD)-affected adults. Results from clinical trials and recent systematic reviews are reported.The results show that mean number of RTIs decreases upon treatment with OM-85, as measured by frequency of exacerbations or number of antibiotic courses. Data from systematic reviews indicated that OM-85 is particularly beneficial in children at high risk of RTIs. In COPD-affected adults, clinical studies showed that treatment with OM-85 reduced exacerbations, although systematic reviews did not legitimate the protective effect of OM-85 toward COPD as significant.The use of OM-85 could be efficacious in reducing exacerbation frequency of RTIs in children and adults at risk. However further high-quality studies are needed to better explain the mechanism of action and confirm the beneficial results of OM85.

Efficiency of bacterial lysates in multimodality therapy of children of early age with viral croups

The paper presents the results of studying the features of the cytokine status and indicators of local immunity of children with acute respiratory viral infection, proceeding with the manifestations of the syndrome of croup, and an evaluation of the efficiency of using bacterial lysates in a multimodality treatment of patients. It has been corroborated that edematous and hypersecretory variants of croup proceed against a background of a considerable intensification of a systemic inflammatory response and a decrease of the factors of local immunity; whereas the spasmodic variant – develops against a background of the physiologic level of cytokines and an increase of the factors of local immunity in the acute period of the disease. The use of bacterial lysates in multimodality therapy of patients with the edematous variant of the syndrome of croup is accompanied with an insignificant decrease in the level of cytokines, whereas with the hypersecretory variant the content of cytokines decreases almost 4-5 times. Against a background of the intake of bacterial lysates with the edematous variant the activity and content of the factors of local immunity rises somewhat, but their level remains lower than the indicators of the control group, with the hypersecretory variant their level reaches the indicators of healthy children. The results of the research enable to recommend bacterial lysates to be used in multimodality therapy of patients afflicted with the hypersecretory variant of croup that will promote a more rapid normalization of the systemic inflammatory reaction and a stimulation of the production and activation of the factors of local immunity in sick children.

Bacterial lysates as a potentially effective approach in preventing acute exacerbation of COPD

The use of bacterial lysates to reduce acute exacerbations of COPD (AECOPDs) is an intriguing concept. Bacterial lysates are powerful inducers of a specific immune response against bacterial infections, but their mechanism of action is not fully understood. Apparently, they lower bacterial carriage levels in the respiratory tract, decrease the incidence and severity of exacerbations, decrease hospitalizations owing to exacerbations, and reduce the need for antibiotics. Unfortunately, almost all trials conducted to date are small and methodologically flawed. Further studies are needed to produce a greater level of evidence that can support the recommendation for a more widely use of bacterial lysates as a prophylactic treatment of AECOPDs.

Polyvalent mechanical bacterial lysate for the prevention of recurrent respiratory infections: A meta-analysis

BackgroundRespiratory tract infections are common and remain a major source of morbidity, mortality and economic cost worldwide, despite advances in modern medicine. One treatment approach is to non-specifically increase the immune response or augment innate defense mechanisms through the use of bacterial lysates. Polyvalent Mechanical Bacterial Lysate (PMBL) is a bacterial lysate made from a wide range of pathogenic bacteria, including all of the most commonly occurring pathogens of the upper and lower respiratory tract obtained by mechanical lysis. AimTo test the available evidence that PMBL is able to prevent respiratory tract infections. MethodsA number of studies investigating randomized comparisons of PMBL (active) with placebo or no treatment (control) were selected for analysis. The primary outcome measure was the prevention of exacerbations or acute respiratory tract infection. The results were expressed as relative risk (RR) and the number of patients needed to treat for one to benefit (NNTB). ResultsData from 2557 patients from 15 randomized clinical trials (RCTs) was investigated. PMBL induced a significant reduction of infections vs placebo (RR −0.513; 95% CI; −0.722 – −0.303; p = 0.00). The NNTB was 1.15. The RR was always in favor of PMBL (in recurrent respiratory infections other than COPD, chronic bronchitis and tuberculosis, RR −0.502; 95% CI −0.824 – −0.181; in children RR −2.204; 95% CI −3.260 – −1.147; in COPD or chronic bronchitis, RR −0.404; 95% CI −0.864–0.057; in tuberculosis, RR −0.502; 95% CI −0.890 – −0.114). ConclusionsThe results of the present meta-analysis suggest that PBML is effective in both in children and in adults in preventing respiratory tract infections. Our current meta-analysis shows that there is a trend with PBML toward clinically significant results in patients with COPD but it did not quite achieve statistical significance due to the small number of COPD studies.

Observations on the use of bacterial lysates in surgical cases

Observations on the use of bacterial lysates in surgical cases