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Query: UMLS:C0348321 (Haemophilus)
 15,372 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The clinical significance, Gram stain reaction, and genus affiliation of Gardnerella vaginalis have been controversial since Gardner and Dukes described the organism as the cause of "nonspecific vaginitis," a common disease of women which is now called bacterial vaginosis. The organism was named G. vaginalis when taxonomic studies showed that it was unrelated to bacteria in various genera including Haemophilus and Corynebacterium. Electron microscopy and chemical analyses have elucidated the organism's gram-variable reaction. Controversy over the etiology of bacterial vaginosis was largely resolved by (i) studies using improved media and methods for the isolation and identification of bacteria in vaginal fluids and (ii) standardization of criteria for clinical and laboratory diagnosis. Besides G. vaginalis, Mobiluncus spp., Mycoplasma hominis, and certain obligate anaerobes are now acknowledged as participants in bacterial vaginosis. The finding that G. vaginalis, Mobiluncus spp., and M. hominis inhabit the rectum indicates a potential source of autoinfection in addition to sexual transmission. Extravaginal infections with G. vaginalis are increasingly recognized, especially when the toxic anticoagulant polyanetholesulfonate is omitted from blood cultures and when urine cultures are incubated anaerobically for 48 h. The finding that mares harbor G. vaginalis suggests that an equine model can be developed for studies of Gardnerella pathogenesis.
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PMID:Gardnerella vaginalis: characteristics, clinical considerations, and controversies. 149 65

Temafloxacin, like other 4-quinolones, was highly active against most isolates of Enterobacteriaceae. It was slightly less active than ciprofloxacin but approximately as active as ofloxacin and enoxacin. It was the most active of the quinolones against Acinetobacter spp. and Xanthomonas maltophilia but was slightly less active than ciprofloxacin against Pseudomonas spp. Temafloxacin was highly active against Haemophilus influenzae, Moraxella catarrhalis and Neisseria gonorrhoeae and was the most active of the quinolones against Gardnerella vaginalis and Campylobacter coli/jejuni. It was more active than ciprofloxacin against most staphylococci and equally active against streptococci and enterococci. Temafloxacin was the most active quinolone against anaerobic bacteria and, with the exception of a few isolates of Bacteroides spp. and some clostridia, all anaerobes were within the sensitive range (MIC less than or equal to 2 mg/l).
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PMID:The in-vitro activity of temafloxacin compared with other antimicrobial agents. 165 55

On the basis of minimum inhibitory concentrations clarithromycin (6-O-methylerythromycin), a new macrolide, was found to be slightly more active than erythromycin against Staphylococcus aureus, enterococci. Moraxella catarrhalis, Gardnerella vaginalis, Bacteroides fragilis (sensu stricto) and B. ureolyticus and slightly less active against coagulase-negative staphylococci, alpha- and beta-haemolytic streptococci, Haemophilus influenzae, Campylobacter coli/jejuni and the B. melaninogenicus/oralis groups. There was complete cross-resistance between the two agents. Reports of potentiation of the activity against Haemophilus influenzae of clarithromycin by its own metabolite and by human serum appear to operate in vivo, and therefore the new agent shows great promise, especially for the treatment of respiratory tract infections.
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PMID:A comparison of the in-vitro activity of clarithromycin, a new macrolide antibiotic, with erythromycin and other oral agents. 168 81

Haemophilus vaginalis first affiliated in the bacterial systems in the genus Haemophilus, the Corynebacterium due to its morphophysiological characteristics--forms a new genus Gardnerella with only one species G. vaginalis. The bacterium is important for man's pathology, as it is responsible for the most numerous vaginitis, considered nonspecific. The paper reports synthetically the present knowledge in biology, pathogenicity, diagnosis and treatment.
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PMID:[New bacterial microorganisms in the etiology of human infections. The genus Gardnerella]. 180 87

On hundred twenty-six men who attended a hospital microbiology laboratory and 99 men who attended a private laboratory in Toulouse, France, for symptoms of urethritis were examined during 1988, for evidence of urethral pathogens. The following incidences were found: Neisseria gonorrhoeae: 24 (10.7%); Chlamydia trachomatis: 58 (25.8%); Ureaplasma urealyticum: 46 (20.4%); Gardnerella vaginalis: 21 (9.3%); Haemophilus parainfluenzae: 21 (9.3%); Streptococcus agalactiae: 15 (6.7%); Candida albicans: 10 (4.4%); and Trichomonas vaginalis: 4 (1.8%). The prevalence of these microorganisms was similar in the two groups of patients. No pathogen was isolated from 71 patients (31.6%). Mixed infections with at least two pathogens were found in 49 men (21.8%). Another goal of this study was to determine the relative prevalence of urethral pathogens in relation to clinical findings. N. gonorrhoeae was isolated significantly more often in patients who had a urethral discharge (P less than .05) that contained five or more polymorphonuclear cells per high-power field (PMN/HPF) (P less than .001). G. vaginalis was isolated significantly more often in patients who did not have an urethral discharge (P less than .05) and in men with less than five PMN/HPF (P less than .05). Isolation of C. albicans was significantly associated with pruritus (P less than .05) and balanitis (P less than .001). Like the clinical features, the gram-stained urethral smear was of limited value in diagnosis and therapeutic decision-making regarding non-gonococcal urethritis. In contrast, this study underlines the importance of full identification of urethral isolates in the management of urethritis in men.
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PMID:Clinical and microbiologic features of urethritis in men in Toulouse, France. 190 4

The US guidelines for prevention and management of the difficult to diagnose symptomatic pelvic inflammatory disease (PID), which affects approximately 1 million every year, include microbial etiology and pathogenesis, the magnitude of the problem in terms of epidemiology and financial impact, risk assessment, prevention, diagnosis, treatment, and surveillance. The etiology of PID reveals multiple organisms, though mostly C. trachomatis and N. gonorrhoea. PID includes acute, silent, and atypical. C. trachomatis has been isolated in 20-40% of PID cases, while N. gonorrhoea in 27-80% of cervical cases. Other anaerobic bacteria isolated, which comprise 25-50% of acute cases, are Gardnerella vaginalis, Streptococcus species, Escherichia coli, and Hemophilus influenzae. PID results when organisms from the endocervix spread to the endometrium and fallopian tube mucosa. Contributing factors are IUD user's hormonal changes during menses (within 7 days of onset of menses), retrograde menses, and virulent characteristics of acute chlamydial and gonococcal PID. The estimated cost of PID for 1990 was $4.2 billion for 25 million in outpatient care and 275,000 hospitalized. Sexual practice related to the risk of PID are having sex with someone with STD, a young age at first intercourse, multiple sex partners, a high frequency of sexual intercourse and new partners within 30 days. Barrier methods (mechanical or chemical) decrease risk. Inconsistent risk is associated with oral contraceptive use and douching, but IUD's have an increased risk of adverse consequences and further transmission. Recommended action is community health promotion of education, as well as prompt and available clinical service, partner notification, training of health care providers, and routine screening. Individuals must self protect. Clinical diagnosis is difficult and imprecise. Minimum criteria for clinical diagnosis are lower abdominal pain, bilateral adnexal tenderness, cervical motion tenderness. Severe cases require oral temperature 38.3 Centigrade, abnormal cervical or vaginal discharge, elevated erythrocyte sedimentation rate and/or C-reactive protein, culture for N. gonorrhoea and non-cervical tests for C. trachomatis, and optionally endometrial biopsy, tubo-ovarian sonography, and laparoscopy. Failure to meet these criteria should not be withholding therapy. Sensitivity to the emotional needs and careful follow-up are necessary. Inpatient treatment recommendations are broad spectrum regimens such as: Cefoxitin plus doxycycline; for outpatients, cefoxitin plus doxycycline or tetracycline (erthyromycin may be substituted).
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PMID:Pelvic inflammatory disease: guidelines for prevention and management. 203 5

In in vitro tests the broad-spectrum cephalosporins cefpirome and cefepime were highly active against Enterobacteriaceae, although often less so against strains resistant to amoxicillin-clavulanate and ticarcillin-clavulanate, and against most strains of Acinetobacter spp. and Aeromonas hydrophila. They were also active against Pseudomonas aeruginosa, although strains with non-plasmid mediated beta-lactam resistance were sometimes less sensitive. Other Pseudomonas spp. varied in their sensitivity. Both agents were highly active against Haemophilus influenzae, but beta-lactamase-producing Branhamella catarrhalis were somewhat less sensitive. Neisseria gonorrhoeae were susceptible, although non-beta-lactamase producing penicillin-resistant strains had higher MICs. Gardnerella vaginalis was also susceptible and Campylobacter coli/jejuni usually susceptible. Both antibiotics had good activity against Staphylococcus aureus and coagulase-negative staphylococci except for methicillin-resistant strains and Staphylococcus haemolyticus which were of borderline sensitivity. All streptococci were sensitive, with the exception of highly penicillin-resistant pneumococci and enterococci against which cefpirome had greater activity than cefepime. Both antibiotics had little useful activity against the Bacteroides fragilis group or Bacteroides oralis group but were active against most other anaerobes. Clostridium difficile and some other Clostridium species were resistant.
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PMID:Comparative in vitro activity of cefpirome and cefepime, two new cephalosporins. 222 98

Bacteria can be isolated from most seminal fluid samples, but the significance of these microorganisms is uncertain because most men lack symptoms associated with bacterial infection of the reproductive tract. We obtained semen samples from 37 men attending a Special Infertility Clinic and assessed the relationship between seminal fluid microorganisms and seminal fluid analysis including sperm motility, morphology, and concentration; the numbers of polymorphonuclear leukocytes and other white blood cells; and the hamster zona-free oocyte sperm penetration assay. Aerobic and/or anaerobic bacteria were recovered from 36 of the 37 samples. One hundred eighty-eight isolates (113 aerobes, 74 anaerobes, and one yeast) were recovered, with a mean of 5.2 isolates per semen specimen. The microorganisms recovered from the samples included: coagulase-negative staphylococci (89%), viridans streptococci (65%), diphtheroids (86%), Peptostreptococcus sp (62%), Bacteroides sp (27%), Gardnerella vaginalis (19%), Lactobacillus sp (16%), Actinomyces sp (16%), Enterococcus (11%), and Veillonella (11%). Other microorganisms including group B streptococcus, Hemophilus, Escherichia coli, Mobiluncus, and Clostridium were each recovered from fewer than 10% of the specimens. When the microbiology of seminal fluid specimens with or without polymorphonuclear leukocytes was compared, the presence of polymorphonuclear leukocytes in the semen was not associated with the isolation of staphylococci (33 versus 25%), viridans streptococci (33 versus 28%), Bacteroides sp (17 versus 37%), or Peptostreptococcus (31 versus 33%) (P greater than .05 for each comparison). The proportion of semen samples yielding bacterial isolates was similar after categorization by normal motility (more than 60%), pyospermia (six or more leukocytes per 100 sperm), sperm concentration, morphology, and a normal sperm penetration assay (11% or more).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Relationship of bacteriologic characteristics to semen indices in men attending an infertility clinic. 232 63

The Haemophilus-Neisseria identification (HNID) panel (American MicroScan, Sacramento, Calif.) is a 4-h microdilution format system for identification of Haemophilus and Neisseria spp., Branhamella (Moraxella) catarrhalis, and Gardnerella vaginalis. The HNID panel was evaluated by using 423 clinical isolates and stock strains of these organisms, and HNID identifications were compared with those obtained by conventional methods. In addition, 32 isolates representing six genera not included in the HNID data base were tested to determine whether these organisms would produce unique biotype numbers for possible inclusion in the data base. The HNID panel correctly identified 95.3% of 86 Neisseria gonorrhoeae strains, 96% of 25 G. vaginalis strains, and 100% of 28 Neisseria lactamica strains and 48 B. catarrhalis strains. Only 64.7% of 68 Neisseria meningitidis isolates were identified correctly owing to false-negative or equivocal carbohydrate and/or aminopeptidase reactions. Among the Haemophilus spp., 98.8% of 83 H. influenzae strains, 97.1% of 34 H. parainfluenzae strains, and 80% of 15 H. aphrophilus and H. paraphrophilus strains were correctly identified. Eight strains of Neisseria cinerea, a species not included in the data base, produced profiles identical with those for B. catarrhalis and N. gonorrhoeae. Isolates of other species not included in the data base, including Eikenella corrodens, Kingella spp., and Cardiobacterium hominis, produced unique biochemical reaction patterns on the panel. Modification of interpretative criteria for certain tests, expansion of the data base to include other species, and suggestions for additional confirmatory tests will increase the accuracy and utility of the HNID panel.
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PMID:Identification of Neisseria spp., Haemophilus spp., and other fastidious gram-negative bacteria with the MicroScan Haemophilus-Neisseria identification panel. 250 51

DNA-DNA hybridization using total genomic DNA probes may represent a way of differentiating between miscellaneous bacterial species. This was studied with type and reference strains of 20 species in Moraxella, Kingella, and other selected Gram-negative groups. Both radioactive and biotin labelling were employed. Most of the species examined were easily distinguished, such as Moraxella (Branhamella) catarrhalis, M.(B.) ovis, M. atlantae, M. phenylpyruvica, M. osloensis, Neisseria elongata, N. meningitidis, Kingella kingae, K. indologenes, K. dentrificans, Oligella urethralis, Eikenella corrodens, Cardiobacterium hominis, Haemophilus aphrophilus, Actinobacillus actinomycetemcomitans, Gardnerella vaginalis, and DF-2. This reflected the extent of the genetic distances between them as a basis for identification by hybridization. There was some clustering in the Moraxella group. Especially the closely related Moraxella nonliquefaciens, M. lacunata and M. bovis showed strong hybridization affinities. This leads to potential problems in distinguishing these three species from each other by DNA-DNA hybridization with total genomic probes alone.
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PMID:Differentiation of some species of Neisseriaceae and other bacterial groups by DNA-DNA hybridization. 273 Jul 85


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