The role of bacterial interference in upper respiratory tract infections in children

2015 ◽  
Vol 01 (04) ◽  
pp. 187-194
Author(s):  
Itzhak Brook
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Upper Respiratory Tract Infections ◽  
Upper Respiratory Tract ◽  
Upper Respiratory ◽  
Tract Infections ◽  
Bacterial Interference

scholarly journals A role of oropharyngeal microbiota in developing acute and chronic diseases of the upper respiratory tract

2020 ◽  
Vol 10 (2) ◽  
pp. 359-367
Author(s):  
I. I. Ababii ◽  
L. A. Danilov ◽  
M. K. Maniuc ◽  
P. I. Ababii ◽  
S. S. Ghinda ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Chronic Tonsillitis ◽  
Upper Respiratory Tract Infections ◽  
Control Group ◽  
Healthy Children ◽  
Upper Respiratory Tract ◽  
Upper Respiratory ◽  
Tract Infections

Currently, a rise in incidence of polyethological inflammation of the upper respiratory tract mucosa paralleled by altered resident and transient microbiota displaying in many cases increased antibiotic resistance has been noted. Opportunistic microbes play a major role in developing inflammatory process in Pirogov–Waldeyer’s ring. An inflammatory process occurring in the tonsillar lymphatic tissue results in host systemic complications. Fighting against acute and chronic infections of the upper respiratory tract holds the main task in pediatric otorhinolaryngology, as they can consequently elicit the cardiovascular, genitourinary and musculoskeletal complications. The results of studies examining this issue remain very contradictory, which accounted for a need to conduct our study on the territory of Moldova featured with mixed climatic conditions. Here, we wanted to study a role of microbial factor in etiopathogenesis of chronic tonsillitis in children. Bacteriological microbiota data for superficial palatine tonsils were obtained form 608 children subdivided into 5 groups: group I — 333 children with compensated chronic tonsillitis; group II — 87 children with decompensated chronic tonsillitis; group III — 91 children with acute upper respiratory tract infections (comparison group); group IV — 48 children with acute upper respiratory tract infections treated with antibiotic therapy; group V — 49 apparently healthy children (control group). It was found that β-hemolytic streptococcus exerting high sensitivity to virtually all antibiotics groups was detected in 17.4% of children with acute tonsilar inflammatory processes and decompensated defense in the lymphatic pharyngeal ring compared to 3.5% in control group. Streptococcus pneumoniae was isolated in all study groups ranging within 4.8–21.7%, including 14% in apparently healthy children characterized by reduced antibiotics sensitivity. The data obtained suggest that sickly children with acute and chronic upper respiratory tract infections constitute a risk group for developing somatic diseases. The high incidence of Streptococcus pneumoniae indicates a need for performing immunoprophylaxis, use of therapeutic vaccination as a up-to-date, combined approach in treatment of such pediatric cohort.

The Role of Bacterial Interference in Otitis, Sinusitis and Tonsillitis

2005 ◽  
Vol 133 (1) ◽  
pp. 139-146 ◽  
Author(s):  
Itzhak Brook
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Antimicrobial Agents ◽  
Bacterial Flora ◽  
Upper Respiratory Tract ◽  
Bacterial Strains ◽  
Upper Respiratory ◽  
Tract Infections ◽  
Bacterial Interference

Bacterial interactions that include antagonism (interference) and synergism help maintain balance between the members of the normal endogenous flora. Alpha-streptococci that predominate in the normal respiratory tract flora attracted most attention in studies of bacterial interference. Other organisms that possess interfering characteristics in upper respiratory tract infections (URTIs) are nonhemolytic streptococci, and Prevotella and Peptostreptococcus spp. The production of bacteriocins by some microorganisms is one of the important mechanisms of interference. The role of bacterial interference in the development of URTI and its effect on the eradication of these infections is discussed. These infections include pharyngo-tonsillitis, otitis media, and sinusitis. Treatment with various antimicrobial agents can affect the balance between members of the oro-pharyngeal bacterial flora and interfering organisms. Implantation into the indigenous microflora of low virulence bacterial strains that are potentially capable of interfering with colonization and infection with other more virulent organisms has been used in preliminary studies as a means of coping with the failure of antimicrobials in the treatment of several URTI.

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