Pork Liver Decomposition Product May Improve Frontal Lobe Function in Humans-Open Trial

Area of Science:

• Neuroscience
• Pharmacology
• Gerontology

Background:

• Porcine Liver Decomposition Product (PLDP), a phospholipid-rich compound, has shown promise in enhancing visual memory and delaying memory recall.
• Existing clinical trials suggest PLDP's efficacy, but its impact on depressive symptoms linked to cognitive decline requires further investigation.

Purpose of the Study:

• To clinically evaluate the effectiveness of PLDP in improving depressive symptoms associated with cognitive function decline.
• To assess PLDP's impact on specific cognitive domains, including delayed recall and verbal fluency, using the Revised Hasegawa Dementia Scale (HDS-R).

Main Methods:

• A clinical trial was conducted with participants scoring 15-23 on the HDS-R, a stricter condition than previous studies.
• Participants received 4 capsules of PLDP orally per day, with HDS-R assessments at 2 and 4 weeks post-administration.
• The study utilized pre-administration scores as a control for ethical considerations.

Main Results:

• A significant increase in HDS-R scores was observed at both 2 and 4 weeks after PLDP administration.
• PLDP administration led to significant improvements in delayed recall and verbal fluency tasks.
• No significant changes were noted in the placebo group in prior trials, highlighting PLDP's specific effects.

Conclusions:

• PLDP administration reproducibly improves delayed verbal memory recall and enhances verbal fluency tasks.
• Findings suggest PLDP may improve frontal lobe function, potentially preventing or alleviating depressive symptoms.
• PLDP's distinct mechanism may offer a novel therapeutic avenue for antidepressant development, differing from existing treatments.