Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0348321 (Haemophilus)
 15,372 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

30 patients with recurrent tonsillitis were treated with amoxycillin/clavulanic acid (500 mg/125 mg) t.i.d. for 10 days. The most often isolated potential aerobic pathogenic bacteria were Staphylococcus aureus, Streptococcus milleri and Haemophilus parainfluenzae. Group A streptococci were isolated from 7 patients. Anaerobic cocci and Bacteroides species were the dominating anaerobic bacteria isolated from the tonsils. Tonsillar cultures were taken before antibiotic treatment started, on days 11-12, day 30, and day 90. Beta-lactamase producing aerobic and anaerobic bacteria were present in 13 patients prior to treatment, on days 11-12 in 18 patients, on day 30 in 15 patients, and on day 90 in 13 patients. Group A streptococci were eradicated in 6/7 patients. In the aerobic tonsillar microflora, the numbers of viridans streptococci decreased during treatment but were normalized after 30 days. Only minor changes in the numbers of other aerobic microorganisms occurred during the investigation. The effect on the anaerobic microflora was minor and no new colonizing microorganisms were isolated during or after antibiotic treatment. All patients except one were cured on days 11-12. Five patients had another episode of tonsillitis during the observation period of 3 months. The antibiotic treatment was well tolerated in most patients and mild adverse events such as nausea, vomiting and diarrhoea were observed in 3 patients.
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PMID:Effect of amoxycillin/clavulanic acid on the aerobic and anaerobic tonsillar microflora in the treatment of recurrent tonsillitis. 228 75

A recent increase in numbers of beta-lactamase-producing strains of aerobic and anaerobic Gram-negative bacteria in upper respiratory tract infections has been associated with increased failure rates of penicillins in eradication of these infections. These organisms include Staphylococcus aureus, Haemophilus influenzae, Branhamella catarrhalis and Bacteroides spp. These infections include chronic otitis media, chronic sinusitis and mastoiditis, and chronic recurrent tonsillitis. The indirect pathogenicity of these organisms is apparent through their ability not only to survive penicillin therapy but also to protect penicillin-susceptible pathogens from these drugs. The direct and indirect virulence characteristics of these bacteria require the administration of appropriate antimicrobial therapy directed against all pathogens in mixed infections.
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PMID:The concept of indirect pathogenicity by beta-lactamase production, especially in ear, nose and throat infection. 269 86

A qualitative and quantitative analysis of the tonsillar surface and core of children with recurrent streptococcal tonsillitis and children with obstructive tonsillar hypertrophy was performed. No qualitative difference was found within the two population groups. Haemophilus influenzae and Bacteroides melaninogenicus were the most prevalent beta-lactamase-producing isolates in both groups. Staphylococcus aureus had the highest rate of beta-lactamase production on the tonsillar surface of children with recurrent tonsillitis, while Streptococcus pyogenes was more prevalent in the tonsillar surface cultures of children with obstructive tonsillar hypertrophy. The bacterial density was high but not significantly different in both groups of children. The similar microbial composition and density of both groups and the higher rate of S pyogenes recovery may signify a subclinical disease or normal flora in children with obstructive tonsillar hypertrophy.
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PMID:Microbiology of obstructive tonsillar hypertrophy and recurrent tonsillitis. 271 31

Staphylococcus aureus, Haemophilus influenzae, Bacteroides sp. (Bacteroides melaninogenicus, Bacteroides oralis, and Bacteroides fragilis), peptostreptococci and fusobacterium sp. are important pathogens in respiratory tract infections (RTI). These organisms are often recovered mixed with other aerobic, facultative and anaerobic bacteria. A recent increase in numbers of bet-lactamase producing strains of anaerobic gram-negative bacteria in RTI has been associated with increased failure rates of penicillins in eradication of these infections. These infections include chronic otitis media, chronic sinusitis and mastoiditis, chronic recurrent tonsillitis and lung abscesses. The indirect pathogenicity of these organisms is apparent through their ability not only to survive penicillin therapy but also to protect penicillin susceptible pathogens from that drug. These direct and indirect virulence characteristics of anaerobic bacteria require the administration of appropriate antimicrobial therapy directed against all pathogens in mixed infections.
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PMID:The role of beta-lactamase-producing bacteria in respiratory tract infections. 307 71

We have summarized our experience in recovery of beta-lactamase-producing bacteria (BLPB) in head and neck infection (HNI). These HNI include conjunctivitis, serous and chronic otitis media, cholesteatoma, chronic mastoiditis, chronic sinusitis, adenoiditis, recurrent tonsillitis in children and adults, peritonsillar abscess, and retropharyngeal abscess. Beta-lactamase-producing bacteria were found in 262 (51%) of 513 patients with HNI; 72% had aerobic BLPB and 57% had anaerobic BLPB. The infections, where these organisms were most frequently recovered, were adenoiditis (85% of patients), tonsillitis in adults (82%) and children (74%), retropharyngeal abscess (71%), and chronic otitis media (57%). The predominant BLPB were Staphylococcus aureus (49% of patients with BLPB), the Bacteroides-melaninogenicus group (28%), the Bacteroides fragilis group (20%), Pseudomonas aeruginosa (13%), Hemophilus influenzae (5%), and Branhamella catarrhalis (3%). The high incidence of recovery of BLPB in head and neck infections may have important implications on the antimicrobial management of these infections.
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PMID:Beta-lactamase-producing bacteria in head and neck infection. 325 96

A total of 75 patients with recurrent tonsillitis, between 15 and 44 years of age, were divided into three groups, two of which were treated with antibiotics before surgery. Bacteriological specimens were collected before treatment started and the microflora of the excised tonsils were analyzed. Bacteroides species were found in the tonsils of 83% of the patients, and 50% of these microorganisms were beta-lactamase producers. Other bacteria found were Staphylococcus aureus in 45%, beta-streptococci group A in 4%, and beta-streptococci groups C and G in 24%. Hemophilus species were isolated from 50%, but no strains produced beta-lactamase. Fusobacteria were recovered from 41%; one strain produced beta-lactamase. After administration of phenoxymethylpenicillin in doses of 1 g twice a day for nine days, the beta-streptococci were eliminated, but no change of the amount of S aureus, Hemophilus, Bacteroides, or fusobacteria was seen. Clindamycin in doses of 0.15 g four times daily for nine days diminished almost all bacteria except for the Hemophilus species.
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PMID:Impact of phenoxymethylpenicillin and clindamycin on microflora in recurrent tonsillitis. 392 64

In 73% of 167 patients with recurrent tonsillitis, colonization with betalactamase-producing microorganisms was found. Betastreptococci group A were recovered in 6% of the patients and group C and G streptococci in 23%. Other microorganisms found were Staphylococcus aureus in 42%, Haemophilus species in 52%, bacteroides species in 80% and fusobacteria in 40%. Ninety-eight per cent of Staph. aureus, 60% of bacteroides species and 10% of fusobacteria were betalactamase-producing. Phenoxymethylpenicillin (1 g twice a day for ten days) diminished 50% of group A, C and G streptococci. No other microorganisms were affected by this antibiotic. Clindamycin (0.15 g four times a day for ten days) eradicated Staph. aureus, group A, C and G streptococci, bacteroides and fusobacteria. Haemophilus species were not affected by clindamycin. Tinidazole (1 g once a day for 10 days) diminished bacteroides and fusobacteria. Aerobic microorganisms, Staph. aureus, streptococci and Haemophilus, were not affected by tinidazole.
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PMID:Betalactamase-producing microorganisms in recurrent tonsillitis. 641 72

Tonsils were obtained from 50 children suffering from recurrent tonsillitis. Patients' ages ranged from 2.5 to 17 years (mean 6 years); 29 were males and 21 females. The tonsils were sectioned in half after heat searing of the surface and the core material was cultured for aerobic and anaerobic microorganisms. Mixed aerobic and anaerobic flora was obtained in all patients, yielding an average of 7.8 isolates (4.1 anaerobes and 3.7 aerobes) per specimen. There were 207 anaerobes isolated. The predominant isolates were 101 Bacteroides sp (including 10 B fragilis group, and 47 B melaninogenicus group), 29 Fusobacterium sp, 34 Gram-positive anaerobic cocci (25 Peptococcus sp and 9 Peptostreptococcus sp) and 16 Veillonella sp. There were 185 aerobic isolates. The predominant isolates were 41 alpha-hemolytic streptococci, 24 Staphylococcus aureus, 19 beta-hemolytic streptococci (11 group A, 4 group B, and 2 each group C and F), 14 Haemophilus sp (including 12 H influenzae type B) and 5 H parainfluenzae. Beta-lactamase production was noted in 56 isolates recovered from 37 tonsils. These were all isolates of S aureus (24) and B fragilis (10), 15 of 47 B melaninogenicus (32%), 5 of the 12 B oralis (42%), and 2 of 12 H influenzae type B (17%). Our findings indicate the polymicrobial aerobic and anaerobic nature of deep tonsillar flora in children with recurrent tonsillitis, and demonstrate the presence of many beta-lactamase-producing organisms in 74% of the patients.
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PMID:Aerobic and anaerobic bacteria in tonsils of children with recurrent tonsillitis. 727 Nov 31

Specimens from both the surface and the core of tonsils from 23 children with recurrent tonsillitis were cultured for aerobic and anaerobic microorganisms. Mixed aerobic and anaerobic flora were obtained from all patients. The predominant anaerobic isolates were Bacteroides sp, Fusobacterium nucleatum, anaerobic Gram-positive cocci, and Eubacterium sp. The predominant aerobic isolates were alpha-hemolytic streptococci, Staphylococcus aureus, beta-hemolytic streptococci, and Haemophilus sp. beta-Lactamase production was noted in 49 isolates from 19 patients (83%). Seventy percent of the aerobic isolates were recovered in both core and surface specimens, compared with 57% of the anaerobic isolates. Ten percent of aerobes were recovered only in the core, compared with 33% of the anaerobes, and 20% of the aerobes in the surface only, compared wtih 10% of the anaerobes. These data demonstrate the discrepancies between surface and core cultures in the isolation of anaerobic bacteria, and raise the question whether surface cultures can accurately predict the presence of beta-lactamase-producing organisms or other pathogens in the recurrently infected tonsil.
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PMID:Surface vs core-tonsillar aerobic and anaerobic flora in recurrent tonsillitis. 741 27

Microbiological studies of the core of tonsils removed from children with recurrent tonsillitis due to group A beta-hemolytic streptococci were conducted during three periods, with 50 patients in each period: 1977-1978 (period 1), 1984-1985 (period 2), and 1992-1993 (period 3). Mixed flora were present in all tonsils, with 8.1 organisms per tonsil (3.8 aerobes and 4.3 anaerobes). The predominant isolates in each period were Staphylococcus aureus, Moraxella catarrhalis, Peptostreptococcus species, pigmented Prevotella species, Porphyromonas species, and Fusobacterium species. The rate of recovery of Haemophilus influenzae type b increased from 24% in period 1 to 76% in period 2 (P < .001); a decline to 12% in period 3 correlated with a concomitant increase in the frequency of recovery of non-type b strains of H. influenzae from 4% and 10% in periods 1 and 2, respectively, to 64% in period 3 (P < .001). Both the rate of recovery of beta-lactamase-producing bacteria and the number of these organisms per tonsil increased over time. Specifically, beta-lactamase-producing strains were detected in 37 tonsils (74%) during period 1, in 46 tonsils (92%) during period 2, and in 47 tonsils (94%) during period 3, and the number of such strains per tonsil increased from 1.1 in period 1 to 2.9 and 3.3 in periods 2 and 3, respectively.
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PMID:Changes in the core tonsillar bacteriology of recurrent tonsillitis: 1977-1993. 757 26


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