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Intratracheal Instillation of Stem Cells in Term Neonatal Rats

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Published on: May 4, 2020

Amniotic fluid stem cell migration after intraperitoneal injection in pup rats: implication for therapy.

Marco Ghionzoli¹, Mara Cananzi, Augusto Zani

¹Department of Surgery, Institute of Child Health, 30 Guilford Street, London, WC1N 1EH, UK.

Pediatric Surgery International

|October 27, 2009

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Intraperitoneal administration of amniotic fluid stem (AFS) cells is safe in newborn rats. These AFS cells can migrate and integrate into various organs, showing potential for cell delivery therapies.

Area of Science:

Regenerative Medicine
Stem Cell Biology
Neonatal Research

Background:

Intraperitoneal (i.p.) administration is a common clinical route but infrequently studied for cell delivery.
Amniotic fluid stem (AFS) cells offer potential therapeutic benefits due to their multipotency and accessibility.

Purpose of the Study:

To evaluate the systemic diffusion and tissue integration capacity of AFS cells following i.p. administration in newborn rats.
To determine the safety and efficacy of i.p. delivered AFS cells for potential cell-based therapies.

Main Methods:

AFS cells were isolated and selected from GFP+ Sprague-Dawley rats.
Newborn wild-type Sprague-Dawley rats received i.p. injections of AFS cells or phosphate buffer saline (PBS).
Organ tissues were analyzed for GFP expression via PCR and immunofluorescence at different time points.

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Main Results:

No adverse effects were observed following i.p. injection of AFS cells or PBS.
GFP was detected in multiple organs of rats receiving AFS cells, with the intestine showing the highest detection rate.
Immunohistochemistry confirmed the presence and integration of GFP-labeled AFS cells in various tissues.

Conclusions:

Short-term i.p. administration of AFS cells is a safe procedure in newborn rats.
AFS cells administered i.p. demonstrate systemic migration, homing, and integration into diverse organs.
This study supports the potential of i.p. AFS cell delivery for therapeutic applications in neonates.