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)

Cefotaxime has remarkable potency against all Enterobacteriaceae, including Enterobacter species, Citrobacter freundii, Serratia marcescens, and Morganella morganii, Proteus vulgaris, and Providencia species--all of which are resistant to earlier cephalosporins. Cefotaxime generally inhibits greater than 90% of enteric bacilli at concentrations of less than or equal to 0.5 microgram/ml; in one study it inhibited greater than 98% of isolates at less than or equal to 8 micrograms/ml. For staphylococci and nonenterococcal streptococci, the mean values for the minimal inhibitory concentration50 (MIC50) of cefotaxime (i.e., the lowest concentration inhibiting growth of 50% of tested strains) are 1.1-1.9 microgram/ml and 0.01-0.05 microgram/ml, respectively. Cefotaxime is inactive against Streptococcus faecalis and most other serogroup D streptococci. It is moderately active against Pseudomonas aeruginosa (MIC50, 19 microgram/ml) and Acinetobacter calcoaceticus subspecies anitratus (MIC50, 18 microgram/ml). Because the activity of cefotaxime against other pseudomonads and nonfermentative gram-negative bacilli varies, in vitro susceptibility testing must be used as a guide to therapy. Cefotaxime is potent against Haemophilus influenzae and Neisseria species. Infections due to beta-lactamase-producing gonococci have been treated effectively with cefotaxime (MIC, mode = less than or equal to 0.004 microgram/ml). Most anaerobes are highly susceptible to cefotaxime, but the minimal inhibitory concentrations for 10%-20% of Bacteroides fragilis strains (MIC50, 5.3 microgram/ml) and other Bacteroides species may exceed obtainable serum concentrations. The potent antimicrobial activity of cefotaxime appears to be the result of a combination of characteristics which include: beta-lactamase stability (types I, III, IV, and V), good ability to pass through the cell membrane, strong affinity for lethal penicillin-binding proteins 1a, 1b(s), and 3, minimal limitation by the inoculum effect, and bactericidal action at or close to the inhibitory concentration. Clinically useful methods of susceptibility testing have been developed and can be recommended for clinical laboratory use.
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PMID:Cefotaxime: a review of in vitro antimicrobial properties and spectrum of activity. 629 79

The efficacy of cefotaxime sodium for treatment of patients with lower respiratory infections was evaluated by three protocols in multicenter trials. The first trial studied cefotaxime alone; the second and third trials compared cefotaxime with cefazolin in observer-blind and single-blind randomized controlled studies, respectively. A total of 656 patients were entered in the three trials; 527 received cefotaxime. Overall rates of bacteriologic and clinical cure, analyzed by pathogen, for the cefotaxime treated patients were 89.9% and 93.9%, respectively. In the two comparative trials, overall rates of bacteriologic and clinical cure with cefotaxime, by pathogen, were greater than 94% and numerically exceeded those for cefazolin in each instance. The efficacies in the comparative studies, when analyzed by total patient responses, were significantly different only for clinical responses to cefotaxime in the single-blind randomized trial (P = 0.03). Favorable cure rates with cefotaxime were obtained in patients with infections due to Streptococcus pneumoniae, Haemophilus influenzae, Streptococcus pyogenes, Staphylococcus aureus, and Escherichia coli, and nearly comparable responses were obtained for infections due to Proteus, Enterobacter, and Klebsiella species. Cefotaxime was clinically effective in some of the infections due to Serratia marcescens and Pseudomonas aeruginosa, but bacteriologic failures occurred in 67% and 61% of cases, respectively. All Serratia strains were highly susceptible in vitro to cefotaxime, but the range of minimal inhibitory concentrations of cefotaxime for Pseudomonas isolates was wide.
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PMID:Clinical trials of cefotaxime for the treatment of bacterial infections of the lower respiratory tract. 629 94

The activity of cefotaxime was compared with that of ampicillin, moxalactam, and cefoperozone against 50 isolates of Haemophilus influenzae and with that of ampicillin, carbenicillin, cephalothin, cefoxitin, cefamandole, cefazolin, and several other established and investigational beta-lactam antibiotics against several hundred isolates of gram-negative aerobic enteric bacilli. Minimal inhibitory concentrations of the drugs were determined by the agar plate dilution technique for H. influenzae and by the microtiter broth dilution technique for the other pathogens. Cefotaxime was the most active agent against H. influenzae; it was 20 times more active than ampicillin. It was also the most active agent against Escherichia coli, Klebsiella pneumoniae, nontyphoid Salmonella species, and Yersinia enterocolitica. Cefotaxime was among the most active agents against Enterobacter cloacae, Citrobacter species, Shigella species, Proteus mirabilis, and Acinetobacter calcoaceticus. None of the new cephalosporins or penicillin inhibited greater than 90% of the isolates of Pseudomonas aeruginosa at concentrations of less than or equal to 16 micrograms/ml; these drugs were, however, more active than carbenicillin.
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PMID:Comparative activity of cefotaxime and selected beta-lactam antibiotics against Haemophilus influenzae and aerobic gram-negative bacilli. 629 90

Results of the treatment of gram-negative bacillary meningitis have been disappointing: mortality is extremely high, and treatment with chloramphenicol has shown a high failure rate. This failure rate for chloramphenicol is consistent with the wide gap between minimal inhibitory concentration and minimal bactericidal concentration of this drug for Escherichia coli, Klebsiella, and other Enterobacteriaceae. Cefotaxime, a new cephalosporin, is cidal for most gram-negative bacteria at concentrations of less than 0.25 microgram/ml. By late 1981, 137 patients with meningitis due to a variety of bacteria had been treated with this agent. Bacteriologic cure rates were 93% for meningitis due to Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae and 88% for meningitis due to gram-negative bacteria (94.4% for meningitis due to E. coli and Klebsiella). This new antibiotic shows considerable promise in the treatment of these forms of meningitis.
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PMID:Treatment of gram-negative bacillary meningitis: role of the new cephalosporin antibiotics. 629 99

Cefotaxime levels were measured in the middle ears of 12 children, after operations for insertion of a transtympanic aerator for serous or relapsing otitis. Mean auricular cefotaxime levels were 4,3 and 5,1 mcg/ml on the right and left respectively. Mean serum level one hour after 25 mg/kg i.m. was 14,5 mcg/ml. In can be concluded that cefotaxime penetrates effectively into the middle ear. Its use should be reserved for difficult or menacing cases of otitis, but its bacteriological activity with regard to Haemophilus influenzae and certain enterobacteria is of value in cases where ampicillins may be ineffective due to resistance of strains.
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PMID:[Antibiotic penetration into the otorhinolaryngologic system in children. II. Concentration of cefotaxime in the middle ear]. 630 57

Cefodizime, an iminomethoxy aminothiazolyl cephalosporin similar to moxalactam and ceftazidime, was less active (minimal inhibitory concentration, 1.6 to 12 micrograms) than cefazolin or cefotaxime against Staphylococcus aureus and Staphylococcus epidermidis. It inhibited Haemophilus and Neisseria spp. at less than 0.5 microgram/ml. It did not inhibit methicillin-resistant staphylococci, enterococci, or Listeria spp. and was 8- to 32-fold less active than cefotaxime, moxalactam, or ceftazidime against Escherichia coli, Citrobacter spp., Klebsiella pneumoniae, Providencia spp., and Serratia spp. Cefotaxime-resistant Enterobacter cloacae, Citrobacter freundii, and Proteus vulgaris were resistant to cefodizime. Cefodizime was less active than cefoxitin or moxalactam against Bacteroides fragilis. Cefodizime was not hydrolyzed by common plasmid or chromosomal beta-lactamases, and it inhibited type I beta-lactamases.
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PMID:In vitro activity and beta-lactamase stability of cefodizime, an aminothiazolyl iminomethoxy cephalosporin. 631 Oct 90

Cefotaxime, a third generation cephalosporin antibiotic, was evaluated in 26 infants and children for the treatment of documented or suspected bacterial infections, including pneumonia (10 cases), soft tissue skin infection (13 cases), and urinary tract infection (3 cases). An average daily dose of 60 mg/kg in 3 to 4 divided doses was administered parenterally for an average of 7 days. In 14 of the cases, primary pathogens, including Haemophilus influenzae b (resistant to ampicillin), Staphylococcus aureus, Staphylococcus pyogenes, Streptococcus pneumoniae and Escherichia coli, were eradicated. Clinical recovery occurred in each case. Blood levels at different time intervals and biological half-life were similar to those reported for adults. Mild and transient side effects observed were elevation of SGOT in two cases, alkaline phosphatase in one, and eosinophilia in one case.
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PMID:Evaluation of cefotaxime in bacterial infections. 632 Oct 80

Minimum inhibitory concentrations (MICs) of nine cephalosporins were determined for 90 isolates of Haemophilus influenzae including 70 amoxycillin-resistant strains. Cefotaxime was the most active of the parenteral antibiotics tested, with a modal MIC of 0.03 mg/l, compared with ceftazidime 0.12 mg/l, cefamandole 0.25 mg/l, cefuroxime 0.5 mg/l and cefathiamidine 4 mg/l. Cefaclor was the most active of the oral cephalosporins tested, with a modal MIC of 2 mg/l compared with cephalexin 8 mg/l and cephradine 32 mg/l. Amoxycillin-sensitive and beta-lactamase-producing haemophili had similar MICs for all cephalosporins. Twenty amoxycillin-resistant beta-lactamase non-producing strains showed high MICs for all beta-lactams tested. A cell permeability barrier is postulated as a mechanism of resistance in these strains.
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PMID:Activity of cephalosporin antibiotics against Haemophilus influenzae. 660 23

Isolated bacteria from respiratory tract infections were collected since 1981 in cooperation with institutions located throughout Japan, and have been investigated for their sensitivities to various antibacterial agents and antibiotics and reported by IKEMOTO, et al. Relationships between these isolates and backgrounds of the patients were also studied each year. These results are discussed in detail in this report. In 20 institutions around the entire Japan from October 1991 to September 1992, 631 strains of bacteria were isolated mainly from sputa of 529 patients with respiratory tract infections and tentatively determined to be etiological agents. MICs of various antibacterial agents and antibiotics against 96 strains of Staphylococcus aureus, 112 strains of Streptococcus pneumoniae, 111 strains of Haemophilus influenzae, 114 strains of Pseudomonas aeruginosa (non-mucoid), 41 strains of Moraxella subgenus Branhamella catarrhalis, 39 strains of Pseudomonas aeruginosa (mucoid), Klebsiella pneumoniae and some others, were determined, and the drug sensitivities of these strains were determined except for the strains that had been killed during transportation: 1. S. aureus. S. aureus strains for which MICs of methicillin were higher than 4 micrograms/ml (methicillin-resistant S. aureus) accounted for 58.3% and the frequency of the drug resistant bacteria increased over previous year's 42.5%. As shown by the MICs, arbekacin was active as vancomycin against all the strains on S. aureus. 2. S. pneumoniae: Benzylpenicillin among the penicillins showed a potent activity against S. pneumoniae. Cefuzonam, cefmenoxime, cefozopran and cefotaxime among the cephems showed excellent antimicrobial activities against S. pneumoniae. Imipenem; a penem antibiotic, showed the most potent activity with MIC80 of 0.03 micrograms/ml. 3. H. influenzae: Activities of all drugs were excellent against H. influenzae strains tested. Ampicillin showed MIC80 of 1 micrograms/ml against H. influenzae. Cefuzonam showed the most potent activity among cephems, it completely killed all bacteria at MIC 0.06 micrograms/ml. Cefotaxime and cefmenoxime showed next most potent activities with MIC80s of 0.06 micrograms/ml. The antimicrobial activity of ofloxacin was equivalent to those of cephems. 4. P. aeruginosa (mucoid). Ciprofloxacin and tobramycin showed the most potent activities against P. aeruginosa (mucoid), and their MIC80s were 4 micrograms/ml. 5. P. aeruginosa (non-mucoid): Similarly, ciprofloxacin and tobramycin showed the most potent activities against P. aeruginosa (non-mucoid) with MIC80 of 2 micrograms/ml. Comparing to activities against P. aeruginosa (mucoid), all the drugs tested showed lower activities against P. aeruginosa (non-mucoid). 6. K. pneumoniae: The activities of all drugs except for penicillins were very high against K. pneumoniae.(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:[Susceptibilities of bacteria isolated from patients with respiratory infectious diseases to antibiotics (1991)]. 747 26

Cefotaxime has been used extensively in many pediatric centers in the United States for the past 10 or more years. Its main usage has been for the treatment of various serious bacterial infections in pediatric patients, primarily meningitis and sepsis. It has also been used to treat intraabdominal, urinary tract, soft tissue, bone, and joint infections. Although there has been a marked reduction in the incidence of invasive Haemophilus influenzae type b infections following the introduction of effective vaccines, cefotaxime remains very useful against the other common pathogens causing serious infections in pediatric patients. The increasing number of pneumococci resistant to penicillin and third-generation cephalosporins has created a new challenge for the management of serious pneumococcal infections. In many institutions, cephalosporins in general have been overused and abused, resulting in the emergence of resistant organisms and an increasing burden on resources. The judicious use of cefotaxime and other cephalosporins should be emphasized.
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PMID:Cefotaxime use in pediatric infections. 758 22


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