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Inducing Meningococcal Meningitis Serogroup C in Mice via Intracisternal Delivery
Published on: November 5, 2019
CHEMO-IMMUNOLOGICAL STUDIES ON LOCALIZED INFECTIONS : FOURTH PAPER: EXPERIMENTAL PNEUMOCOCCIC MENINGITIS AND ITS
1Laboratories of The Rockefeller Institute for Medical Research, New York.
Abstract:
Virulent pneumococci injected into the cranial or spinal cavities of monkeys produce constantly a meningitis closely resembling pneumococcus meningitis in man, except that the experimental disease pursues a more rapid course to the invariable death of the untreated animal. An homologous immune pneumococcus serum injected into the spinal canal exerts a restraining influence upon the disease to the extent that when employed early it prevented, exceptionally, the occurrence of infection and thus saved the life of the animal, and when given later it at first retarded the disease but subsequently exerted no beneficial action and was powerless to save life. A mixture of sodium oleate, immune serum, and boric acid exerted regularly a more powerful action than immune serum alone, and not only prevented the occurrence of infection but also, when administered repeatedly, arrested the progress of an actually established infection and led, often, to the enduring and perfect recovery of the inoculated animal. It is proposed to employ a similar mixture in the direct treatment of pneumococcic meningitis and possibly of still other accessible local pneumococcic infections in man.
Insights
A novel therapeutic mixture, including immune serum, sodium oleate, and boric acid, effectively treated pneumococcus meningitis in monkeys. This combination demonstrated superior efficacy over serum alone, leading to complete recovery in many cases.
Area of Science:
- Microbiology
- Infectious Diseases
- Neurology
Background:
- Pneumococcus meningitis is a severe infection with high mortality.
- Current treatments for pneumococcus meningitis have limitations.
Purpose of the Study:
- To evaluate the efficacy of an immune pneumococcus serum, alone and in combination with other agents, for treating experimental pneumococcus meningitis in monkeys.
Main Methods:
- Monkeys were inoculated with virulent pneumococci in cranial or spinal cavities to induce meningitis.
- Treatment groups received homologous immune pneumococcus serum, or a mixture of immune serum, sodium oleate, and boric acid.
Main Results:
- Immune serum alone showed limited efficacy, only preventing infection if administered very early.
- The combination of immune serum, sodium oleate, and boric acid demonstrated significantly enhanced therapeutic effects.
- This mixture not only prevented infection but also arrested established meningitis and led to complete recovery in many animals.
Conclusions:
- A therapeutic mixture of immune serum, sodium oleate, and boric acid shows promise for treating pneumococcus meningitis.
- This combination therapy may be applicable to other localized pneumococcal infections in humans.
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Bacterial Pneumonia Treatment
For bacterial pneumonia, antibiotics serve as the cornerstone of therapy. Initial treatment often begins with empirical antibiotics, tailored to the anticipated causative organism and adjusted based on culture results. Key antibiotic choices include: