scholarly journals Probiotics for prevention of acute respiratory infections in children: therapeutic potential.

2021 ◽  
pp. 254-260
Author(s):  
Irina N. Zakharova ◽  
Narine G. Sugyan

Acute respiratory viral infections represent a group of clinically, pathomorphologically similar acute inflammatory respiratory diseases that manifest by fever, a runny nose, sneezing, cough, sore throat, a general feeling of ill health of varying severity. Activation of latent, persistent infections of viral and/or bacterial origin may occur in recurrent respiratory infections. Decreased production of local immunity contributes greatly to the development of viral and bacterial infections, persistence of pathogenic micro-organisms. Intestinal microflora can directly or indirectly affect the human respiratory tract through increased production of cytokines, short-chain fatty acids. In recent years, there has been a scientific interest in the therapeutic potential of probiotics for the prevention of acute respiratory viral infections. Earlier studies have shown a positive effect of probiotics on the respiratory tract with a view to prevent and reduce the incidence and severity of respiratory infectious diseases by expending the number of IgA secreting cells in the bronchial mucosa. Studies showed that the use of probiotics can reduce the incidence of acute respiratory infections, duration of fever, cough, and the need for antibacterial agents in children. Peptidoglycans and muramyl peptides that are constituents of the bacterial cell wall have antiviral activity. Probiotics can also inhibit virus attachment through a process of competing for the specific receptors. The regeneration of the mucous membrane is enhanced by the ability of mucin to prevent the virus from attaching to epithelial cells and suppress virus replication. The antiviral effect of probiotics may be caused by the ability to produce antimicrobial peptides, dehydrogenases and NOs. Probiotics can modulate the functions of epithelial and dendritic cells, CD4 +, CD8 + T lymphocytes, NK cells, stimulate the synthesis of secretory immunoglobulins, helping to neutralize the virus.

2019 ◽  
Vol 11 (3) ◽  
pp. 38-45
Author(s):  
S. A. Khmilevskaya ◽  
N. I. Zryachkin ◽  
V. E. Mikhailova

The aim: to study the etiological structure of acute respiratory infections in children aged 3 to 12 hospitalized in the early stages of the disease in the department of respiratory infections of the children’s hospital, and to reveal the features of their clinical course and the timing of DNA / RNA elimination of respiratory viruses from nasal secretions, depending on the method of therapy. Materials and methods: 100 children with acute respiratory infections aged 3 to 12 years were monitored. The nasal secrets on the DNA / RNA of respiratory viruses were studied by PCR. Depending on the method of therapy, patients were divided into 2 groups: patients of group 1 (comparison) received basic treatment (without the use of antiviral drugs), in patients of the 2nd group (main), along with basal therapy, the drug was used umifenovir in a 5-day course at the ageappropriate dosage. Results: In the etiologic structure of ARVI in children from 3 to 12 years, the leading place was taken by rhinovirus, influenza and metapneumovirus infections (isolated – 18%, 19% and 20% respectively, in the form of a mixed infection – 11%). The main syndromic diagnosis at the height of the disease was rhinopharyngitis. Complications were observed in 42% of cases, as often as possible with flu – 53% of cases. Features of metapneumovirus infection in children of this age group were: predominance of non-severe forms of the disease in the form of acute fever with symptoms of rhinopharyngitis, as well as a small incidence of lower respiratory tract infections. The use of the drug umiphenovir in children with acute respiratory viral infections of various etiologies contributed to significantly faster elimination of viral DNA / RNA from the nasal secretion, which was accompanied by a ecrease in the duration of the main clinical and hematological symptoms of the disease, a decrease in the incidence of complications, and reduced the duration of stay in hospital. Conclusion: application of modern molecular genetic methods of diagnostics made it possible to identify the leading role of influenza, metapneumovirus and rhinovirus infections in the etiology of acute respiratory viral infection in patients aged 3 to 12 years, and to determine a number of clinical features characteristic of this age group. The results of the study testify to the effectiveness of umiphenovir in the treatment of children with acute respiratory viral infections of various etiologies and allow us to recommend this drug as an effective and safe etiotropic agent.


2021 ◽  
Vol 5 (11) ◽  
pp. 762-767
Author(s):  
S.V. Nikolaeva ◽  
◽  
Yu.N. Khlypovka ◽  
V.A. Zavolozhin ◽  
E.K. Shushakova ◽  
...  

Respiratory viruses are the leading cause of pediatric morbidity and mortality worldwide. Rapid identification of a pathogen, epidemiological surveillance, description of symptoms, and the development of preventive and therapeutic measures are keystones to limit the spread of respiratory infections. Novel viruses with specific properties are regularly discovered. This paper addresses essential data on the most common viruses provoking acute respiratory infections, including whose in children and the pattern of their course. Conventionally, the most vital concern is flu. Influenza viruses provoke seasonal outbreaks, epidemics, and pandemics. Many studies demonstrate the role of rhinovirus C in the development of bronchiolitis and, subsequently, asthma. Severe acute respiratory syndrome-related coronavirus (SARS-CoV), Middle East respiratory syndrome-related coronavirus (MERS-CoV), and SARS-CoV-2 provoking COVID-19 were recently described. Knowledge of known and newly emerging viruses is crucial for timely adequate medical care. The authors discuss major therapeutic strategies for acute respiratory infections that provide a more favorable course of infectious inflammation irrespective of viral etiology. KEYWORDS: acute respiratory infections, influenza virus, rhinovirus, coronavirus, pneumonia, interferon. FOR CITATION: Nikolaeva S.V., Khlypovka Yu.N., Zavolozhin V.A. et al. Respiratory viral infections in children: modalities for pathogenic treatment. Russian Medical Inquiry. 2021;5(11):762–767 (in Russ.). DOI: 10.32364/2587-6821-2021-5-11-762-767.


2021 ◽  
Vol 5 (5) ◽  
pp. 335-347
Author(s):  
N.A. Geppe ◽  
◽  
A.L. Zaplatnikov ◽  
E.G. Kondyurina ◽  
O.I. Afanasieva ◽  
...  

Aim: to evaluate the efficacy and safety of Anaferon and Anaferon for children for the prevention and treatment of of acute respiratory viral infections (ARVI)/influenza using meta-analysis. Patients and Methods: the meta-analysis included data from 11 randomized clinical trials (RCTs) involving 3079 patients aged 1 month to 69 years, of which: 1729 people were included in the meta-analysis of the preventive drugs efficacy, 1550 patients — in the meta-analysis of the therapeutic efficacy of Anaferon for children. The evaluation of the therapeutic efficacy was conducted according to the criteria "disease duration" and/or "fever duration", the evaluation of the preventive efficacy was conducted according to the criterion "the proportion of patients not falling ill with ARVI/influenza". The safety was evaluated taking into account the number of adverse events (AEs). Statistical methods included the exact Fisher criterion, the Student criterion, fixed and random effects models, the Z-test, the Cochrane-Mantel-Hensel criterion, Cochrane Q-statistics and the I2 coefficient, the Breslow-Day test, the calculation of relative risk (RR), odds ratios (OR) and their 95% confidence intervals (CI). Results: according to the criterion "the proportion of patients not falling ill with ARVI/influenza", the RR of Anaferon for children was 1.2 [95% CI 1.2; 1.3] with an OR of 2.2 [95% CI 1.7; 2.9], while for Anaferon, the RR was 6.7 [95% CI 3.8; 11.8] with an OR of 20.1 [95% CI 9.2; 44.0]. At the same time, the proportion of patients without ARVI/influenza during Anaferon intake exceeded that in the absence of preventive intervention by almost 8 times, and during Anaferon for children intake — 1.3 times vs. placebo. When evaluating the therapeutic effect of Anaferon for children, it was found that the average disease duration was 1.4 times shorter than during placebo intake, and was 4.71±2.53 days (p<0,001). The average fever duration was 2.19±1.21 days vs. 3.22±1.81 days during placebo intake (p<0,001). According to the criterion "disease duration", the weighted average effect value was 1.05 [95% CI 0.44; 1.67], according to the criterion "fever duration" — 0.97 [95% CI 0.61; 1.33] (p<0.001, p-value of the two-tailed Z-test; random effects model). The therapeutic efficacy of Anaferon for children did not depend on the etiology of ARVI, the symptoms, and the presence of comorbidity (asthma). The total number of AEs is similar to those in the comparison group. Conclusion: the conducted review and meta-analysis concerning the efficacy and safety of Anaferon and Anaferon for children for the treatment and prevention of ARVI/influenza allow us to conclude the following: 1) Anaferon for children is effective and safe for the treatment of influenza and other acute respiratory infections, regardless of the pathogen and the presence of comorbidity (asthma); 2) Anaferon and Anaferon for children are effective and safe for the prevention of acute respiratory infections/influenza, including patients with concomitant bronchopulmonary pathology and frequently ill children. KEYWORDS: ARVI, influenza, prevention, treatment, meta-analysis, Anaferon, Anaferon for children. FOR CITATION: Geppe N.A., Zaplatnikov A.L., Kondyurina E.G. et al. Efficacy and safety of Anaferon for children and Anaferon for the prevention and treatment of influenza and other acute respiratory viral infections: systematic review and meta-analysis. Russian Medical Inquiry. 2021;5(5):335–347 (in Russ.). DOI: 10.32364/2587-6821-2021-5-5-335-347.


Author(s):  
I. V. Bakshtanovskaya ◽  
T. F. Stepanova ◽  
G. V. Sharukho ◽  
A. N. Letyushev ◽  
K. B. Stepanova ◽  
...  

The aim of this work was to identify the causative agent of community-acquired pneumonia and coinfection using PCR study of biomaterial from patients.Materials and methods. PCR testing of 268 samples from 258 patients was carried out to identify RNA/DNA of viral and bacterial pathogens of respiratory infections.Results and discussion. In 43.3 % of samples SARS-CoV-2 RNA was detected, in 4.5 % – RNA/DNA of acute respiratory viral infections pathogens, in one sample – DNA of Mycoplasma pneumoniae. Co-infection was detected only in patients of the anti-tuberculosis dispensary (SARS-CoV-2 and Mycobacterium tuberculosis). In the examined patients with pneumonia, SARS-CoV-2 RNA was significantly more often detected in biomaterial from the lower respiratory tract (52 %) than in respiratory smears (8.5 %). In the first week from the onset of the disease, 19.2 % of positive samples were found, in the second – 56.5 %. 


2019 ◽  
pp. 186-191
Author(s):  
V. N. Drozdov ◽  
O. A. Vorob’eva ◽  
S. Yu. Serebrova ◽  
E. V. Shikh

The follow-up group of «frequently ill children» is formed on the basis of criteria formulated by domestic pediatricians A.A. Baranov and V.Yu. Al’bitskiy, due to the high relevance of medical, social and economic problems caused by the increased morbidity in this category of patients especially with acute respiratory infections, with likely development of severe complications or the manifestation of chronic respiratory diseases. In general, the state of the immune system in frequently ill children is characterized by decreased local immunity and increased stress of systemic immunity, and the features of the functional immunity activity in this category of patients determine the various possibilities to affect immunity during the prevention and treatment of acute respiratory infections. This article discusses the features of the functional activity of the immune system in frequently ill children, as well as the possibilities of drug management of its disorders and the benefits of using inosine pranobex to prevent and treat respiratory infections in this category of patients. According to the international classification of drugs maintained by the World Health Organization, the drug belongs to the groups of immunomodulators (L) and antimicrobial antiviral drugs (J) for systemic use. It is proved that inosine pranobex effectively increases cellular and humoral immunity, and reduces non-specifically the viral replication capacity. During clinical trials, the drug proved to be a highly effective and safe component of the complex treatment of acute respiratory infections in frequently ill children. The use of inosine pranobex reduces the duration and intensity of symptoms of infectious respiratory tract diseases. The drug can be recommended for children with concomitant chronic respiratory tract diseases.


2015 ◽  
Vol 21 (31) ◽  
pp. 65-68
Author(s):  
Гуриева ◽  
Z. Gurieva ◽  
Плиева ◽  
Zh. Plieva ◽  
Гипаева ◽  
...  

The influenza and acute respiratory infections are one of the medical problems. The relevance of influenza and acute respiratory infections was due to the lack of a persistent immune response and the lack of vaccines against many respiratory viral infections. We have analyzed the latest outbreak of influenza and acute respiratory infections in the North Ossetia-Alania, that occurred in winter 2015. During the analyzed period there was an increase in the incidence of acute respiratory infections by 42,1%. 66 cases of influenza were revealed by the laboratory. In order to reduce the intensity of flu and acute respiratory infections is necessary to observe all types of preventive measures: specific vaccination, chemoprophylaxis with antivirals and following the rules of non-specific prevention.


1986 ◽  
Vol 67 (5) ◽  
pp. 355-358
Author(s):  
A. D. Tsaregorodtsev ◽  
N. I. Kuznetsova ◽  
L. M. Malysheva ◽  
V. A. Anokhin ◽  
D. Sh. Khaertynova

The aim of this study was to compare the state of nonspecific resistance, cellular and humoral immunity in young children with acute respiratory infections with a smooth course, with the first episode of bronchoobstructive syndrome (BOS) and with recurrence of this syndrome.


Author(s):  
С.В. Николаева ◽  
Д.В. Усенко ◽  
Ю.Н. Хлыповка ◽  
А.В. Горелов

Вирусные инфекции дыхательных путей являются наиболее частой причиной инфекционных заболеваний, особенно у детей. В большинстве случаев, особенно при поражении верхних дыхательных путей, острые респираторные вирусные инфекции протекают в легкой или среднетяжелой форме и часто купируются самостоятельно. Фармакологические средства для лечения или профилактики данных инфекций у детей в настоящее время ограничены. Многочисленные исследования доказали эффективность пробиотиков в лечении и профилактике заболеваний желудочно-кишечного тракта, таких как инфекционные и антибиотик-ассоциированные диареи, диареи путешественников, некротизирующий энтероколит, инфекция Helicobacter pylori, а также атопических заболеваний. Становится актуальным изучение эффективности пробиотиков в качестве средств профилактики острых респираторных инфекций среди детей и взрослых. Данные in vitro демонстрируют, что пробиотики обладают штаммоспецифическим иммуномодулирующим действием на иммунные клетки. Показано, что пробиотики эффективны в подавлении репликации различных респираторных вирусов, включая вирусы гриппа и респираторно-синцитиальный вирус. Подобные эффекты были продемонстрированы на мышах, было показано, что пробиотики способны снижать титры вируса в тканях легких и модулировать экспрессию противовирусных и провоспалительных генов до и после вирусной инфекции. Доклинические исследования также показывают уменьшение симптомов заболевания у мышей, что указывает на потенциальную клиническую пользу. Данные литературы по изучению применения пробиотиков и синбиотиков при вирусных инфекциях респираторного тракта показывают, что их использование связано с более низкой частотой и меньшей продолжительностью легких форм респираторной инфекции как у детей, так и у взрослых. Целесообразно дальнейшее проведение исследований для получения адекватных выводов об эффективности пробиотиков и синбиотиков при острых респираторных инфекциях. Viral infections of the respiratory tract are the most common cause of infectious diseases, especially in children. In most cases, especially when the upper respiratory tract is affected, acute respiratory viral infections are mild to moderate and often stop spontaneously. Pharmacological agents for the treatment or prevention of these infections in children are currently limited. Numerous studies have proven the effectiveness of probiotics in the treatment and prevention of diseases of the gastrointestinal tract, such as infectious and antibiotic-associated diarrhea, traveler's diarrhea, necrotizing enterocolitis, Helicobacter pylori infection, as well as atopic diseases. It is becoming urgent to study the effectiveness of probiotics as prophylactic agents for acute respiratory infections. among children and adults. In vitro data demonstrate that probiotics have strain-specific immunomodulatory effects on immune cells. Probiotics have been shown to be effective in suppressing the replication of various respiratory viruses, including influenza viruses and respiratory syncytial virus. Similar effects have been demonstrated in mice with the ability of probiotics to reduce viral titers in lung tissues and modulate the expression of antiviral and pro-inflammatory genes before and after viral infection. Preclinical studies also show improvement in symptoms in mice, indicating potential clinical benefit. Literature data on the use of probiotics and synbiotics for viral infections of the respiratory tract show that their use is associated with a lower frequency and duration of mild forms of respiratory infection in both children and adults. It is advisable to further conduct research necessary to obtain adequate conclusions about the effectiveness of probiotics and synbiotics in acute respiratory infections.


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