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Postoperative Cognitive DysfunctionNCT07681063

Palmitoylethanolamide/Luteolin Supplementation in Older Adults Undergoing Cardiac Surgery

A study testing co-ultramicronized Palmitoylethanolamide + Luteolin (700 mg + 70 mg in 10 ml) in people with Postoperative Cognitive Dysfunction, run by Fondazione IRCCS San Gerardo dei Tintori at 1 site in Italy.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

Postoperative Cognitive Dysfunction (POCD) is a common complication after surgery, particularly among older adults. It is characterized by cognitive impairment, reduced functional independence, and decreased quality of life. Read more about this study

Who is it for?
Ages 65 years and older
Conditions the study is for
Postoperative Cognitive Dysfunction
What is being tested?
co-ultramicronized Palmitoylethanolamide + Luteolin (700 mg + 70 mg in 10 ml)
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
100 participants
Where
1 siteItaly
Study dates
Jun 2026to Jun 2028
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 65 years and older
  • All sexes
  • No healthy volunteers
  • Older adult

Who may be able to join

  • Age ≥ 65 years
  • Both genders
  • Undergoing elective aortic or mitral valve replacement/reconstruction with or without coronary artery bypass grafting (CABG), at the Cardiac Surgery Unit of IRCCS San Gerardo dei Tintori Foundation (Monza, Italy)
  • Prognosis quoad vitam ≥ 3 months
  • Availability of a formal or informal caregiver who can assist the participant in taking the prescribed dose and following the visit schedule
  • Any concomitant therapy should be stable
  • Written informed consent obtained prior to randomization (from the participant or caregiver if the participant is unable to sign but clearly expresses the will to participate)

Who cannot join

  • Severe dementia diagnosis
  • Preoperative clinical diagnosis of delirium
  • Other treatments/medications that may improve cognition
  • Current treatment with m/umPEA or PEALut (Glialia®), or its use within 90 days prior to enrollment
  • Contraindications to the use of PEALut, including allergy to excipients contained in the supplement and previous adverse reactions to PEALut
  • Other clinical conditions or situations that could interfere with the study or prevent optimal participation, as judged by the researchers

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Italy1 site
  • Fondazione IRCCS San Gerardo dei Tintori

    Monza

    Clinical Office, ricerca.clinica@irccs-sangerardo.it

Other trials in Italy

About this study

Official title: Palmitoylethanolamide/Luteolin for the Maintenance of Cognitive Performance in Older Adults Undergoing Cardiac Surgery

Postoperative Cognitive Dysfunction (POCD) is a common complication after surgery, particularly among older adults. It is characterized by cognitive impairment, reduced functional independence, and decreased quality of life. Growing evidence suggests that neuroinflammation plays a relevant role in POCD development and persistence.

Palmitoylethanolamide (PEA) is an endogenous lipid mediator involved in the regulation of neuroinflammatory processes through the modulation of non-neuronal cells, while luteolin is a flavonoid with well-known antioxidant properties. Under conditions of prolonged neuroinflammation, endogenous PEA levels may be insufficient to adequately counteract pro-inflammatory signaling, making exogenous administration necessary.

Read more

In this context, exogenous micronized and ultramicronized PEA (mPEA and umPEA) supplementation has been shown to modulate cognitive and executive functions, working memory, language, and activities of daily living. Moreover, the combination of umPEA and luteolin (PEALut) may produce synergistic effects by modulating neuroinflammation and supporting neuronal function.

This study aims to evaluate whether postoperative administration of co-ultramicronized PEA and luteolin (700 mg + 70 mg in 10 mL), added to standard of care, may contribute to the mitigation of POCD in older adults undergoing elective cardiac surgery, compared to standard care alone.

Being tested
co-ultramicronized Palmitoylethanolamide + Luteolin (700 mg + 70 mg in 10 ml), Standard of Care
Keywords
Neuroinflammation, Palmitoylethanolamide, Luteolin, Postoperative Cognitive Dysfunction, Cardiac Surgery, Cognitive Impairment
Medical subject headings
Postoperative Cognitive Complications, Neuroinflammatory Diseases, Cognitive Dysfunction

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • co-ultramicronized Palmitoylethanolamide + Luteolin (700 mg + 70 mg in 10 ml)Dietary supplement

    Also called Glialia® oral suspension, PEALut® oral suspension

    Oral suspension, 10 ml twice daily (every 12 hours), starting within 24 hours post-surgery and for 3 months, in add-on to the Standard of Care

  • Standard of CareOther

    Standard of Care

Study groups in NCT07681063
Study groupRoleWhat they receive
PEALut® + Standard of CareExperimentalParticipants receive co-ultramicronized Palmitoylethanolamide + Luteolin (700 mg + 70 mg in 10 ml) in addition to Standard of Care
Receives: Dietary Supplement: co-ultramicronized Palmitoylethanolamide + Luteolin (700 mg + 70 mg in 10 ml); Other: Standard of Care
Standard of CareActive comparatorParticipants receive only the Standard of Care
Receives: Other: Standard of Care

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in cognitive performance

    Cognitive performance will be assessed using the Montreal Cognitive Assessment (MoCA), a 30-item screening tool that evaluates multiple cognitive domains, including memory, visuospatial ability, executive function, attention, language, and orientation. Scores range from 0 to 30, with higher scores indicating better cognitive performance.

    Measured: Baseline, hospital discharge (approximately postoperative day 7-10, depending on clinical course), 3 months after treatment, and 3 months after the end of treatment

Secondary outcomes (19)
  1. Incidence of Postoperative Cognitive Dysfunction (POCD)

    Incidence of POCD will be defined as a decrease of at least 1 standard deviation from baseline MoCA score.

    Measured: Hospital discharge (approximately postoperative day 7-10, depending on clinical course), and 3 months after treatment

  2. Incidence, subtype and duration of postoperative delirium (POD)

    Postoperative delirium will be assessed using the 4AT screening tool. A score of ≥4 suggests possible delirium (with or without cognitive impairment), with higher scores indicating greater severity of cognitive disturbance. Positive screenings will be confirmed using DSM-5 criteria. Delirium subtype will be classified using the Delirium Motor Subtyping Scale-4 (DMSS-4), and duration will be recorded in days from onset to resolution.

    Measured: Daily, from 24 hours after the intervention until hospital discharge (approximately postoperative day 7-10, depending on clinical course)

  3. Change in Activities of Daily Living (ADL)

    Activities of daily living will be assessed using the six-item Katz Activities of Daily Living (ADL) Index. Scores range from 0 to 6, with higher values indicating greater function.

    Measured: Baseline, 3 months after treatment, and 3 months after the end of treatment

  4. Change in Instrumental Activities of Daily Living (IADL)

    Functional status will be assessed using the Instrumental Activities of Daily Living (IADL) scale. Scores range from 0 to 8, with higher scores indicating better functional ability.

    Measured: Baseline, 3 months after treatment, and 3 months after the end of treatment

  5. Change in Short Physical Performance Battery (SPPB)

    Physical performance will be assessed using the Short Physical Performance Battery (SPPB), which evaluates balance, gait speed, and chair stand performance. Scores range from 0 to 12, with higher scores indicating better physical performance.

    Measured: Baseline, 3 months after treatment, and 3 months after the end of treatment

  6. Change in Handgrip Strength

    Muscle strength will be assessed using a handgrip dynamometer. Handgrip strength will be recorded in kilograms (kg), with higher values indicating greater muscle strength.

    Measured: Baseline, 3 months after treatment, and 3 months after the end of treatment

  7. Rehospitalization

    Incidence of rehospitalization

    Measured: From 24 hours after the intervention to 6 months after randomization

  8. Mortality

    Incidence of mortality

    Measured: From 24 hours after the intervention to 6 months after randomization

  9. Incidence of Treatment-Related Adverse Events

    Safety and Adherence assessment will be assessed by monitoring the incidence and severity of adverse events occurring during the study period.

    Measured: From first treatment administration up to 3 months after the end of treatment

  10. Plasma p-tau217 levels

    Plasma levels of phosphorylated tau (p-tau217) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline

  11. Plasma Aβ42 levels

    Plasma levels of Amyloid beta 42 (Aβ42) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline

  12. Change in plasma IL-6 levels

    Plasma levels of Interleukin-6 (IL-6) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline, Immediately after surgery (within 24 hours, before PEALut administration), and 3 months after treatment

  13. Change in plasma s-RAGE levels

    Plasma levels of soluble Receptor for Advanced Glycation End-products (s-RAGE) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline, Immediately after surgery (within 24 hours, before PEALut administration), and 3 months after treatment

  14. Change in plasma GDF-15 levels

    Plasma levels of Growth Differentiation Factor-15 (GDF-15) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline, Immediately after surgery (within 24 hours, before PEALut administration), and 3 months after treatment

  15. Change in plasma GFAP levels

    Plasma levels of Glial Fibrillary Acidic Protein (GFAP) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline, Immediately after surgery (within 24 hours, before PEALut administration), and 3 months after treatment

  16. Change in plasma NSE levels

    Plasma levels of Neuron-Specific Enolase (NSE) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline, Immediately after surgery (within 24 hours, before PEALut administration), and 3 months after treatment

  17. Change in plasma NfL levels

    Plasma levels of Neurofilament Light Chain (NfL) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline, Immediately after surgery (within 24 hours, before PEALut administration), and 3 months after treatment

  18. Change in plasma FGF-1 levels

    Plasma levels of Fibroblast Growth Factor-1 (FGF-1) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline, Immediately after surgery (within 24 hours, before PEALut administration), and 3 months after treatment

  19. Change in plasma BDNF levels

    Plasma levels of Brain-Derived Neurotrophic Factor (BDNF) will be measured in blood samples using standard clinical laboratory assays.

    Measured: Baseline, Immediately after surgery (within 24 hours, before PEALut administration), and 3 months after treatment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Jul 2026
  2. Study startJun 2026 (estimated)
  3. Primary completionJun 2027 (estimated)
  4. Study completionJun 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Supportive care
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
100 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07681063
Sponsor's protocol ID
PEGASUS COG
Status last verified
May 2026
First submitted
11 Jun 2026
Last updated
2 Jul 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Savageau JA, Stanton BA, Jenkins CD, Frater RW. Neuropsychological dysfunction following elective cardiac operation. II. A six-month reassessment. J Thorac Cardiovasc Surg. 1982 Oct;84(4):595-600.

    PubMed 6981735
  • Moller JT, Cluitmans P, Rasmussen LS, Houx P, Rasmussen H, Canet J, Rabbitt P, Jolles J, Larsen K, Hanning CD, Langeron O, Johnson T, Lauven PM, Kristensen PA, Biedler A, van Beem H, Fraidakis O, Silverstein JH, Beneken JE, Gravenstein JS. Long-term postoperative cognitive dysfunction in the elderly ISPOCD1 study. ISPOCD investigators. International Study of Post-Operative Cognitive Dysfunction. Lancet. 1998 Mar 21;351(9106):857-61. doi: 10.1016/s0140-6736(97)07382-0.

    PubMed 9525362
  • Suraarunsumrit P, Srinonprasert V, Kongmalai T, Suratewat S, Chaikledkaew U, Rattanasiri S, McKay G, Attia J, Thakkinstian A. Outcomes associated with postoperative cognitive dysfunction: a systematic review and meta-analysis. Age Ageing. 2024 Jul 2;53(7):afae160. doi: 10.1093/ageing/afae160.

    PubMed 39058915
  • Zhang L, Qiu Y, Zhang ZF, Zhao YF, Ding YM. Current perspectives on postoperative cognitive dysfunction in geriatric patients: insights from clinical practice. Front Med (Lausanne). 2024 Sep 27;11:1466681. doi: 10.3389/fmed.2024.1466681. eCollection 2024.

    PubMed 39399113
  • Nobili S, Micheli L, Lucarini E, Toti A, Ghelardini C, Di Cesare Mannelli L. Ultramicronized N-palmitoylethanolamine associated with analgesics: Effects against persistent pain. Pharmacol Ther. 2024 Jun;258:108649. doi: 10.1016/j.pharmthera.2024.108649. Epub 2024 Apr 12.

    PubMed 38615798
  • Clayton P, Hill M, Bogoda N, Subah S, Venkatesh R. Palmitoylethanolamide: A Natural Compound for Health Management. Int J Mol Sci. 2021 May 18;22(10):5305. doi: 10.3390/ijms22105305.

    PubMed 34069940
  • Colizzi M, Bortoletto R, Colli C, Bonomo E, Pagliaro D, Maso E, Di Gennaro G, Balestrieri M. Therapeutic effect of palmitoylethanolamide in cognitive decline: A systematic review and preliminary meta-analysis of preclinical and clinical evidence. Front Psychiatry. 2022 Oct 28;13:1038122. doi: 10.3389/fpsyt.2022.1038122. eCollection 2022.

    PubMed 36387000
  • Caltagirone C, Cisari C, Schievano C, Di Paola R, Cordaro M, Bruschetta G, Esposito E, Cuzzocrea S; Stroke Study Group. Co-ultramicronized Palmitoylethanolamide/Luteolin in the Treatment of Cerebral Ischemia: from Rodent to Man. Transl Stroke Res. 2016 Feb;7(1):54-69. doi: 10.1007/s12975-015-0440-8. Epub 2015 Dec 26.

    PubMed 26706245

Questions about this trial

What is this clinical trial studying?

A study testing co-ultramicronized Palmitoylethanolamide + Luteolin (700 mg + 70 mg in 10 ml) in people with Postoperative Cognitive Dysfunction, run by Fondazione IRCCS San Gerardo dei Tintori at 1 site in Italy.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 2 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Giuseppe Bellelli (+39 039 233 3472, giuseppe.bellelli@unimib.it), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in cognitive performance (time frame: Baseline, hospital discharge (approximately postoperative day 7-10, depending on clinical course), 3 months after treatment, and 3 months after the end of treatment). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07681063, which also lists 8 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Jul 2026.

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