IgA nephropathy associated with Campylobacter jejuni enteritis.
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Biomedical subjects
Publications and source records attributed to N Cimolai.
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Anaerobic pelvic osteomyelitis occurs rarely in children. A case of Fusobacterium nucleatum osteomyelitis of the right ilium [correction of ileum] in a child without apparent risk factors is described. This case emphasizes the value of diagnostic aspirates. Therapy with a combination of intravenous and oral clindamycin led to successful resolution of the infection.
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A rapid immunoblotting technique based on the IgM response to a major immunogenic protein is described for the diagnosis of Mycoplasma pneumoniae infection. Using results of the complement fixation test as the criterion for diagnosis, the rapid immunoblot method was positive in 95.7% of patients. The sensitivity was reduced to 81.9% if the test was performed on either single sera or acute sera only from serum pairs. Although the few sera that failed to demonstrate a positive IgM response were more likely to be from older patients, there was a consistent IgM response recorded for both younger (less than 20 years) and older (greater than or equal to 20 years) patients.
Two unique associations of disease with Escherichia coli O157:H7 are presented. These cases broaden the spectrum of disease associated with this organism which currently includes bloody and non-bloody diarrhoea, haemolytic-uraemic syndrome, and thrombotic thrombocytopenic purpura.
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The incidence of beta-haemolytic non-Group A streptococci (BHNAS) in the throats of a paediatric population was examined over a 1-year period. There was minimal seasonal fluctuation of Lancefield groups including species and biotypes within Groups C and G streptococci. A trend of increasing incidence with age of Streptococcus anginosus ('Streptococcus milleri') (possessing Groups C and G Lancefield antigens) was evident. A clinical impression of streptococcal pharyngitis was more common in patients with large-colony Groups C or G streptococci isolated from their throats compared with those patients where other BHNAS were isolated. This study is requisite to the planning of case control studies which are required to test the association of BHNAS (especially Groups C and G subgroups) and pharyngitis.
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Two cases of Branhamella catarrhalis bacteremia in childhood are presented. The literature is reviewed for this unusual cause of bacteremia.
The sensitivity of the BACTEC NR660 blood culture system was assessed by using paired bottles of anaerobic (NR7A) and resin-containing aerobic (NR16A) media and conditions and organisms which simulated those found in pediatric practice. Corresponding media (7D and 16B) of the established BACTEC 460 radiometric method served as controls. The performances of the two systems were similar with 50 isolates of 10 aerobic organisms (aerobic medium) and with 21 isolates of 15 strict anaerobes (anaerobic medium).
The association of Mycoplasma pneumoniae with arthropathy in children and young adults has been established essentially on the basis of complement fixation (CF) serology. Because the CF test may be nonspecific for M. pneumoniae, we have confirmed the association by determination of IgM ELISA and IgM and IgG immunoblotting responses in 2 children. Mycoplasma pneumoniae should be considered in any patient with acute respiratory illness who subsequently develops arthropathy.
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We have employed a monoclonal antibody directed to a Mycoplasma pneumoniae membrane-associated protein antigen in a culture-amplified detection system. Eleven culture-positive sputum specimens were detected significantly more early by the immunoassay. Specimens culture-positive for other probable mycoplasma spp. were negative by this technique.
Saccharomyces cerevisiae was isolated on two separate occasions from the blood of a patient with chronic renal failure receiving dialysis. Treatment was complicated by recurrent ventricular tachycardia occurring after both 1 mg and 0.1 mg test doses of amphotericin. We report the unique clinical and microbiological aspects of this patient's management, and review the literature pertinent to this organism.
A murine monoclonal antibody, OC2F5, reacts with a Mycoplasma pneumoniae antigen with an approximate Mr of 43,000. This antigen is trypsin and proteinase K sensitive and partitions in the detergent phase of a Triton X-114 solution. The monoclonal antibody cross-reacts with an antigen from both Mycoplasma genitalium and Acholeplasma laidlawii with a similar molecular weight. This cross-reactivity should be considered in the development of M. pneumoniae antigen detection systems based on the use of antibodies directed to this protein antigen.