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Splenosis is regulated by a circulating factor
A D Soutter1, J Ellenbogen, J Folkman
1Department of Surgery, Children's Hospital, Boston, MA 02115.
Journal of Pediatric Surgery
|August 1, 1994
Summary
Splenosis growth is inhibited by circulating factors from intact spleens. Higher splenic mass leads to greater inhibition of splenosis, suggesting spleen-saving surgeries may reduce its incidence.
Area of Science:
- Immunology
- Surgical Pathology
- Regenerative Medicine
Background:
- Splenic rupture can lead to splenosis, the abnormal growth of splenic tissue.
- The regulatory mechanisms governing splenosis are not fully understood.
Purpose of the Study:
- To investigate the role of circulating factors in regulating splenotic growth.
- To test the hypothesis that splenotic growth is controlled by mediators present in the bloodstream.
Main Methods:
- A parabiotic mouse model was established by surgically connecting pairs of mice.
- Mice underwent various procedures including sham operations, splenectomy, and transplantation of splenic fragments.
- Splenotic fragment growth was quantified by weight after six weeks.
Main Results:
- Splenic fragments involuted when both partners had intact spleens.
- In pairs with one intact spleen and fragments, splenotic mass was reduced by approximately 47%.
- Splenosis significantly increased (P < .01) in pairs with no intact spleens and fragments, with intermediate growth when fragment numbers were doubled.
Conclusions:
- Splenosis is actively inhibited by circulating factors present in parabiotic mice.
- The degree of splenosis inhibition is directly proportional to the total splenic mass.
- Spleen-preserving surgical interventions may lower the risk of splenosis in patients with splenic trauma.