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Results for “LEPTOSPIRA INFECTIONS”

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PubMed1976

[Severe course of an infection with Leptospira grippotyphosa (author's transl)].

In a 22 years old female patient severe jaundice, renal failure and myocarditis developed 3 days after the onset of fever and other uncharacteristic symptoms. In dark-field microscopy leptospires were found. Inspite of high-dose penicillin therapy exitus letalis occurred in myocardial and circulatory failure, due to a severe interstitial myocarditis. Leptospira grippotyphosa could be proven serologically as the causative bacterium. It is pointed out, that leptospirosis inspite of their rare occurrence should be included in the differential diagnosis of infections of undetermined origin, especially if jaundice develops. The demonstration of leptospira in blood, cerebro-spinal fluid or urin by means of darkfield microscopy may quickly support the diagnosis. Since the course of severe leptospirosis can be influenced significantly only up to the 4th day after the onset, high-dose penicillin G or tetracycline therapy should be initiated already when the clinical suspicion is present.

Acute Kidney Injury↗
PubMed1986

Phagocytosis as a defense mechanism against infection with leptospiras.

The role of macrophages in host defense was studied in vivo and in vitro. The intravenous administration of silica, an agent reported to selectively inactivate macrophages, increased the sensitivity to leptospiral infection and inhibited bacterial clearance. Active immunization with killed organisms or with leptospiral lipopolysaccharide (L-LPS), and passive immunization with a monoclonal antibody showed powerful protective effects against infection in mice. The effect of immunization decreased in silica-treated mice. These findings were supported by electron microscopic examination and observation of killing by macrophages in vitro.

Animals↗