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  • 1
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Toxic-Shock-Syndrom ; Toxine ; Superantigene ; Septischer Schock ; Key words Toxic shock syndrome ; Bacterial toxins ; Superantigens ; Septic shock
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract We report a rare case of non-menstrual toxic shock syndrome (TSS) in the course of Staphylococcus aureus sepsis in a 31-year-old primigravida who developed high fever and severe pulmonary and cardiovascular failure within a few hours at the end of the 29th week of a twin pregnancy. Mechanical ventilation was necessary due to signs of adult respiratory distress syndrome (ARDS) and catecholamines were needed to maintain a somewhat adequate blood pressure. A forceps delivery was performed immediately. Postoperatively, the patient was brought to the intensive care unit (ICU) due to the suspicion of severe septic shock. In addition to the extreme cardiovascular instability and massive disturbance of pulmonary gas exchange, the clinical picture was characterised by a disseminated intravascular coagulopathy (DIC) with marked petechial bleeding and ecchymoses on all extremities. Moreover, a confluent, spotty exanthem of the trunk and extremities could be seen. Despite all therapeutic efforts, the patient died within a few hours after admission to the ICU with signs of multiorgan failure. Post-mortem, multiple staphylococcal abscesses were found in the kidneys, liver, and uterus. Moreover, acute ulcerous endocarditis of the mitral valve and septic myocardial foci with myocarditis were seen. The Staph. aureus strain isolated from the blood cultures was shown to produce TSS toxin 1 (TSST-1) and enterotoxin B. In summary, the clinical picture can be interpreted as severe staphylococcal sepsis complicated by TSS. TSS is a specific type of infectious disease, occurring mainly in young women during the menstrual period (80%–90%), but it has also been reported in non-menstrual cases (10%–20%). It is characterised by sudden-onset high fever, hypotension, rash, mucosal hyperaemia, and various additional symptoms such as myalgia, vomiting, and diarrhoea. The clinical course depends on the extent of the organ failure due to decreased tissue perfusion during hypotension. Severe cases are accompanied by multiple organ-system failure including impaired renal function, which is reversible in nearly all cases. Respiratory failure ranges from interstitial and alveolar aedema to ARDS in 10% of cases; severe DIC is seen in 10%–15%. Another severe clinical complication is cardiac insufficiency. The etiology of TSS is based on a localized or, rarely, systemic infection with certain Staph. aureus strains that are capable of producing toxins, the most important one being TSST-1. Staph. aureus strains can also produce various other enterotoxins that may be involved in the pathogenesis of TSS. The pathogenetic importance of the toxins is supported by the antibody titers in TSS patients: more than 80% of healthy adults show high levels of antibody titers, whereas 90% of TSS patients exhibit low levels in the acute phase followed by a significant increase during convalescence. It is not clear whether the toxins cause TSS by a direct effect or by release of mediators due to their function as superantigens. The clinical characteristics of non-menstrual TSS are identical to those of menstrual TSS, but it can occur in many clinical settings in both sexes at any age. Severe clinical courses are more frequent in non-menstrual TSS: the mortality is about 8%–11% in non-menstrual TSS compared to 2%–5% in menstrual TSS. The diagnosis is based mainly on clinical signs and the isolation of toxin-producing Staph. aureus strains. Besides antibiotic therapy, treatment is primarily directed to the correction of hypotension and additional organ-system failure. Other therapeutic measures such as the elimination of toxins by plasma separation or the administration of antibodies or gamma-globulins are subjects of investigation with no general recommendations at this time.
    Notes: Zusammenfassung Wir berichten über den seltenen Fall eines nicht-menstruellen Toxic-Shock-Syndroms (TSS) im Rahmen einer abszedierenden S. aureus-Sepsis bei einer 31jährigen graviden Patientin, welche am Ende der 29. Schwangerschaftswoche innerhalb von Stunden eine schwerste respiratorische und kardiozirkulatorische Insuffizienz entwickelte. Auch nach der notfallmäßigen Forzepsentbindung konnte trotz aller intensivmedizinischer Maßnahmen keine Stabilisierung des Allgemeinzustands erreicht werden. Die Patientin verstarb wenige Stunden postpartal unter den Zeichen eines Multiorganversagens. Post mortem fanden sich neben multiplen staphylogenen Abszedierungen in Nieren, Leber und Uterus eine akut, ulzeröse Endokarditis der Mitralklappe sowie septische myokardiale Streuherde mit begleitender Myokarditis. Der aus Blutkulturen isolierte S. aureus-Stamm verfügte über die Fähigkeit zur Produktion von Toxic-Shock-Syndrome-Toxin-1 (TSST-1) und Enterotoxin B. Das TSS, bei dem man ein menstruelles (80–90%) von einem nicht-menstruellen TSS (10–20%) unterscheidet, wird durch die Hauptsymptome Fieber, Hypotonie, Schleimhauthyperämie und Exanthem sowie eine Reihe von Nebensymptomen wie z.B. Myalgien, Erbrechen, Diarrhoe charakterisiert. Schwere Krankheitsverläufe sind mit Störungen multipler Organsysteme bis hin zum Multiorganversagen verbunden. Pathogenetisch liegen dem TSS lokale, selten generalisierte Infektionen mit S. aureus-Stämmen zugrunde, welche über die Fähigkeit zur Produktion von Toxinen mit Superantigencharakter verfügen (Enterotoxine, TSST-1). Die Letalität des nicht-menstruellen TSS ist hoch und wird mit 8–11% angegeben. Im Vordergrund der Therapie steht derzeit neben der antibiotischen Therapie die symptomatische Behandlung der Hypotension sowie begleitender Organstörungen.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1831
    Keywords: Key words  Streptococcus pyogenes ; vir regulon ; M-related proteins ; Immunoglobulin-binding proteins ; Recombination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract   The majority of group A streptococci (GAS, Streptococcus pyogenes) express immunoglobulin (Ig)-binding proteins. The genes encoding these proteins belong either to the emm or the emm-related (fcrA/mrp and enn) gene family and are located in close proximity on the GAS genome, where they form part of the vir regulon. In the present study analysis of sequence data of the 5′ terminal portions of the fcrA/mrp genes from GAS isolates representing 37 different M serotypes led to a classification of six different types. Thus, although fcrA/mrp genes exhibit an allelic polymorphism, they do not display the high degree of N-terminal sequence diversity found among emm genes. The nucleotide sequences of the fcrA/mrp genes from 3 GAS isolates, belonging to serotypes M8, M9, and M13 and representing newly characterized fcrA/mrp gene types, are reported. Analysis of the Ig-binding properties of recombinant FcrA/Mrp8, 9, and 13 proteins, demonstrated a similar Ig-binding profile being reactive with human IgG subclasses 1, 2, and 4. This pattern is identical to that previously described for other recombinant fcrA/mrp4, 49, 64/14 and 76 gene products, indicating that this property is not affected by the N-terminal variability. Evidence for recombination between an fcrA/mrp and an mga gene was observed in an M-type 33 strain isolate providing further support for the concept of gene rearrangement contributing to the diversity of vir regulon gene products.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1076
    Keywords: Key words Haemophilus influenzae type b  ;   Combination vaccine  ;  Immunological memory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The lack of an adequate immune response to the major polysaccharide of the Haemophilus influenzae type b (Hib) capsule (polyribosyl ribitol phosphate) (PRP) in very young infants (〈 18 months) can be overcome by conjugating PRP to a T-cell dependent carrier protein. We studied whether administration of a tetanus-PRP conjugate vaccine reconstituted with a diphtheria-tetanus-acellular pertussis-hepatitis B (DTPa-HBV) vaccine as a three dose primary course at 3, 4 and 5 months of age induced PRP-specific immunological memory, by examining the anti-PRP response to a dose of unconjugated PRP given with the DTPa-HBV booster approximately 1 year later. The unconjugated PRP elicited protective anti-PRP antibody levels (≥ 0.15 μg/ml) in all but 3 of the 369 vaccinees, including 13 infants who failed to demonstrate a measurable immune response after the primary course. In a sub-cohort of 54 subjects all had anti-PRP levels ≥ 0.5 μg/ml within 7–14 days of the booster showing a rapid anamnestic type response. Both primary and booster responses were predominantly IgG1 indicating a T-cell dependent response. The DTPa-HBV components elicited protective anti-diphtheria, anti-tetanus and anti-HBs antibody levels in ≥ 98.5% of vaccinees, and immune responses to each of the acellular pertussis vaccine components in 92.3%–97.3% of subjects. Conclusion The tetanus-PRP conjugate vaccine not only elicited a good primary humoral response, but also induced immunological memory so that the infants were able to mount a large and rapid immune response to subsequent exposure to plain PRP, indicating that protection against circulating wild-type Hib had been generated. Successful induction of immunological memory occurred even when there was no measurable humoral anti-PRP response to the primary course. Tetanus-PRP conjugate vaccine can be used in combination with DTPa-HBV vaccine, when administered separately or as a single injection in the same syringe, in primary immunisation schedules at 3, 4 and 5 months of age.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Because of the allelic variations within the M protein gene (emm gene) of group A streptococci, reliable typing of this important human pathogen can be accomplished by the use of emm gene-specific oligonucleotide probes. Two technical modifications (a reverse dot blot and a reverse line blot hybridization assay) of a novel approach for the type-specific identification of emm genes have been developed. Both procedures involved amplification of an emm gene by polymerase chain reaction. The non-radioactively labeled amplicon was subsequently hybridized to a membrane carrying an array of immobilized emm gene-specific oligonucleotide probes, thus allowing the simultaneous analysis of the gene polymorphism in a single hybridization reaction. The feasibility of these rapid and easy to perform methods was shown for the unequivocal identification of reference strains and clinical isolates belonging to 16 different M serotypes.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0167-2584
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Surface Science Letters 173 (1986), S. A387-A388 
    ISSN: 0167-2584
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0039-6028
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0039-6028
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Infection 20 (1992), S. 238-239 
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Infection 17 (1989), S. 385-387 
    ISSN: 1439-0973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Aus Blutkulturen einer Patientin mit einer Endokarditis wurde einGemella haemolysans-Stamm angezüchtet, ein zu den„Streptococcaceae“ gehöriges Bakterium. Die Patientin konnte mit einer Kombination von Penicillin G und Tobramycin sowie anschließender Clindamycin-Therapie erfolgreich behandelt werden. Die Taxonomie des Erregers, insbesondere seine Verwandtschaft zu„Streptococcus morbillorum“, wird diskutiert und eine Übersicht über kürzlich beschriebeneGemella-Infektionen gegeben.
    Notes: Summary Gemella haemolysans, a coccus related to the“Streptococcaceae”, was isolated from the blood of a patient with endocarditis. The patient was successfully treated with a combination of penicillin G and tobramycin, followed by clindamycin. The taxonomy of this organism, especially its relationship to“Streptococcus morbillorum” is discussed and previously reported cases ofGemella infections are reviewed.
    Type of Medium: Electronic Resource
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