Comparing Photosensitisers for Colonic Photodynamic Therapy
Author Information
Author(s): H. Barr, A.J. MacRobert, C.J. Tralau, P.B. Boulos, S.G. Bown
Primary Institution: National Medical Laser Centre, Department of Surgery, The Rayne Institute, University College London
Hypothesis
Is aluminium sulphonated phthalocyanine (AlSPc) more effective than haematoporphyrin derivative (HpD) for photodynamic therapy in the colon?
Conclusion
AlSPc produced more damage than HpD at certain doses and energy levels, but both photosensitisers resulted in similar histological damage and healing.
Supporting Evidence
- AlSPc produced more damage than HpD with increasing energy.
- Both photosensitisers resulted in full thickness necrosis without weakening the colon.
- Histological damage and healing were similar for both agents.
Takeaway
This study looked at two types of medicines used in light therapy for treating colon issues. One type worked better than the other at certain amounts, but both helped the colon heal well.
Methodology
Rats were injected with either HpD or AlSPc and treated with light at different doses and energy levels to compare the effects.
Limitations
The study had a small number of animals and results may not be generalizable.
Participant Demographics
Male Wistar rats, weighing 180-250 g.
Want to read the original?
Access the complete publication on the publisher's website