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The Journal of experimental medicine1916; 24(5); 485-496; doi: 10.1084/jem.24.5.485

The Serum Treatment of Weil’s Disease (Spirochaetosis Icterohaemorrhagica).

Abstract: Horses immunized with cultures of Spirochaeta icterohaemorrhagiae yield an immune serum having therapeutic properties. With rare exceptions the serum destroys completely the spirochetes contained in the circulating blood. The development of antibodies is promoted by the serum injections. The number of spirochetes in the organs is reduced by the treatment. Secondary manifestations due to the serum are slight and disappear promptly. The ultimate effects of the serum treatment on the symptoms and final outcome of the disease have still to be determined.
Publication Date: 1916-11-01 PubMed ID: 19868056PubMed Central: PMC2125472DOI: 10.1084/jem.24.5.485Google Scholar: Lookup
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  • Journal Article

Summary

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The researchers conducted a study on treating Weil’s disease, a severe bacterial infection, through vaccinations created from immune horse blood serum. The produced serum successfully eliminated most of the bacteria in the bloodstream and lessened their numbers in other organs, while side effects were minimal and temporary.

Methodology and Results

  • The researchers began their research by immunizing horses with the bacteria Spirochaeta icterohaemorrhagiae, which is the causative agent of Weil’s disease. This process stimulated the horses’ immune response, leading to the production of antibodies against the bacteria.
  • Once the horses produced sufficient antibodies, their blood was collected and a serum was extracted. The serum contains these antibodies and is used for its potential therapeutic effects against Weil’s disease.
  • The serum was then tested for its efficacy. It was found to be highly effective in eliminating the spirochetes – the bacteria – circulating in the blood, with only rare exceptions.
  • The vaccine also triggered the development of antibodies in the hosts, augmenting the immune response to the disease.
  • Furthermore, it reduced the number of spirochetes present in the organs, thereby limiting the ability of the bacteria to cause damage.
  • Side effects from the serum were both minor and transient, disappearing shortly after they appeared.

Limitations and Further Research

  • The researchers acknowledge that they have yet to fully define the prolonged impacts of the serum therapy on the course of the disease. Although the injected serum can spur the production of new antibodies and decrease the bacterial populations in the short-term, the long-term effect on the symptoms and final consequence of the disease is unclear.
  • They recognized this as an area needing additional investigations to validate the treatment’s effectiveness and ensure its safety over time. This will enable them to improve the serum treatment and make it a more reliable solution for treating Weil’s disease.

Cite This Article

APA
Inada R, Ido Y, Hoki R, Ito H, Wani H. (1916). The Serum Treatment of Weil’s Disease (Spirochaetosis Icterohaemorrhagica). J Exp Med, 24(5), 485-496. https://doi.org/10.1084/jem.24.5.485

Publication

ISSN: 0022-1007
NlmUniqueID: 2985109R
Country: United States
Language: English
Volume: 24
Issue: 5
Pages: 485-496

Researcher Affiliations

Inada, R
  • First Medical Clinic of the Imperial University in Kyushu, Fukuoka.
Ido, Y
    Hoki, R
      Ito, H
        Wani, H

          References

          This article includes 2 references
          1. Inada R, Ido Y, Hoki R, Kaneko R, Ito H. THE ETIOLOGY, MODE OF INFECTION, AND SPECIFIC THERAPY OF WEIL'S DISEASE (SPIROCHAETOSIS ICTEROHAEMORRHAGICA).. J Exp Med 1916 Mar 1;23(3):377-402.
            pubmed: 19867994doi: 10.1084/jem.23.3.377google scholar: lookup
          2. Ido Y, Hoki R, Ito H, Wani H. THE PROPHYLAXIS OF WEIL'S DISEASE (SPIROCHAETOSIS ICTEROHAEMORRHAGICA).. J Exp Med 1916 Nov 1;24(5):471-83.
            pubmed: 19868055doi: 10.1084/jem.24.5.471google scholar: lookup

          Citations

          This article has been cited 7 times.
          1. Gomes-Solecki M, Santecchia I, Werts C. Animal Models of Leptospirosis: Of Mice and Hamsters. Front Immunol 2017;8:58.
            doi: 10.3389/fimmu.2017.00058pubmed: 28270811google scholar: lookup
          2. Mooser H. EXPERIMENTAL STUDIES WITH A SPIRAL ORGANISM FOUND IN A WILD RAT. J Exp Med 1924 Mar 31;39(4):589-602.
            doi: 10.1084/jem.39.4.589pubmed: 19868869google scholar: lookup
          3. Inada R, Ido Y, Hoki R, Ito H, Wani H. INTRAVENOUS SEROTHERAPY OF WEIL'S DISEASE (SPIROCHAEETOSIS ICTEROHAEMORRHAGICA). J Exp Med 1918 Feb 1;27(2):283-303.
            doi: 10.1084/jem.27.2.283pubmed: 19868205google scholar: lookup
          4. Kaneko R, Okuda K. THE DISTRIBUTION IN THE HUMAN BODY OF SPIROCHAETA ICTEROHAEMORRHAGIAE. J Exp Med 1917 Sep 1;26(3):325-39.
            doi: 10.1084/jem.26.3.325pubmed: 19868152google scholar: lookup
          5. Noguchi H. SPIROCHAETA ICTEROHAEMORRHAGIAE IN AMERICAN WILD RATS AND ITS RELATION TO THE JAPANESE AND EUROPEAN STRAINS : FIRST PAPER. J Exp Med 1917 May 1;25(5):755-63.
            doi: 10.1084/jem.25.5.755pubmed: 19868121google scholar: lookup
          6. Kappagoda C, Senavirathna I, Jayasundara D, Warnasekara J, Agampodi T, Agampodi S. Comparative Genome Analysis of 25 Sri Lankan Leptospira Isolates Outer Membrane Receptors That Interact With Human TLR2. Evol Bioinform Online 2025;21:11769343251389782.
            doi: 10.1177/11769343251389782pubmed: 41245262google scholar: lookup
          7. Kappagoda C, Senavirathna I, Agampodi T, Agampodi SB. Role of Toll-like receptor 2 during infection of Leptospira spp: A systematic review. PLoS One 2024;19(12):e0312466.
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