- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04290312
Absorption and Bioavailability of Major Monoterpenes in Mastiha Oil; a Kinetic Study in Humans.
Plant derived foods contain large quantities of non-nutrient phytochemicals that have been extensively studied for their beneficial health effects on the prevention of chronic diseases. Although research on their health effects is abundant, our knowledge on absorption and bioavailability is yet narrow and in some cases zero. The concept of bioavailability involves the identification of the fraction of administered compounds that can reach plasma and body tissues in an unchanged form. The bioactivity of components in foods that are part of our nutrition, either as parent foods or as food supplements, is directly related to bioavailability, the latter being a necessary step to prove efficacy.
Mastiha Oil (MO) is extracted from the resin of Pistacia Lentiscus var. Chia (of the Anacardiaceae family), a concentrated source of monoterpenes (e.g., α-pinene, β-pinene, β-myrcene) and triterpenes (e.g., mastihadienonic acid, isomastihadienonic acid), and to a lesser extent of plant sterols, simple phenols and approximately 10% MO (Assimopoulou, & Papageorgiou, 2005, Paraschos et al, 2007, Kaliora, Mylona, Chiou, Petsios, & Andrikopoulos, 2004). MO is a 100% natural product used as a food additive and flavoring and it is manufactured according to the legal standards that make it suitable for human consumption. Its nutritional analysis is presented in Supplementary Table 1. A total of 90 components have been detected in MO (50% monoterpene hydrocarbons, 20% oxygenated monoterpenes, 25% sesquiterpenes). Monoterpenes seem to exhibit beneficial health effects contributing to mechanisms of inflammation and oxidative stress (Subramaniyan, 2017; Madhuri, & Naik, 2017).
Research upon the bioavailability of monoterpenes in humans is limited. Herein, we aimed at investigating the bioavailability of the main monoterpenes of MO in humans for the first time. To this end, a novel GC-MS-MS method was employed, since the tandem MS technique can help overcome matrix difficulties. Additionally, based on the existing data regarding the antioxidant activity of monoterpenes, the effect on human antioxidant capacity was evaluated applying the serum oxidisabilty assay.
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Study Overview
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Attica
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Athens, Attica, Greece, 17671
- Harokopio University
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Age: 20-40 years old
- BMI: 18.5-24.9 kg/m2
Exclusion Criteria:
- Obesity
- Alcohol or drug abuse
- Medication, vitamin or inorganic supplements
- Vegan or macrobiotic diet before and during the study
- Gastrointestinal diseases, such as atrophic gastritis, Inflammatory Bowel Disease, peptic ulcer or gastrointestinal cancer
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Other: Mastiha oil
As a control to the experimental design, timepoint 0 was considered.
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After overnight fasting, the authorized study staff inserted a plastic cannula in an arm vein of the volunteers in order to minimize discomfort during consecutive blood sampling.
A blood sample was collected on time point 0h and then the volunteers consumed 1mL of MO.
The dose selection was based on the study of Papada et al. (2017) who administered healthy volunteers with 10g of Mastiha (containing ~10% MO).
Afterwards blood samples were collected on time points 0.5h, 1h, 2h, 4h, 6h and 24h after MO intake, and were centrifuged at 3000rpm for 10 minutes at 4◦C for plasma and serum isolation.
All samples were stored at -80◦C until further analysis.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Plasma concentrations of monoterpenes
Time Frame: 24 hours
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The monoterpenes will be identified and quantified in plasma samples applying GC-MS-MS.
Data will be presented through study completion in plasma concentration (μg/L).
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24 hours
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Andriana Kaliora, Ass. Professor, Harokopio University
Publications and helpful links
General Publications
- Papada E, Gioxari A, Brieudes V, Amerikanou C, Halabalaki M, Skaltsounis AL, Smyrnioudis I, Kaliora AC. Bioavailability of Terpenes and Postprandial Effect on Human Antioxidant Potential. An Open-Label Study in Healthy Subjects. Mol Nutr Food Res. 2018 Feb;62(3). doi: 10.1002/mnfr.201700751. Epub 2017 Dec 29.
- Abidi A, Aissani N, Sebai H, Serairi R, Kourda N, Ben Khamsa S. Protective Effect of Pistacia lentiscus Oil Against Bleomycin-Induced Lung Fibrosis and Oxidative Stress in Rat. Nutr Cancer. 2017 Apr;69(3):490-497. doi: 10.1080/01635581.2017.1283423. Epub 2017 Feb 17.
- J C Furtado NA, Pirson L, Edelberg H, M Miranda L, Loira-Pastoriza C, Preat V, Larondelle Y, Andre CM. Pentacyclic Triterpene Bioavailability: An Overview of In Vitro and In Vivo Studies. Molecules. 2017 Mar 4;22(3):400. doi: 10.3390/molecules22030400.
- Garcia-Villalba R, Larrosa M, Possemiers S, Tomas-Barberan FA, Espin JC. Bioavailability of phenolics from an oleuropein-rich olive (Olea europaea) leaf extract and its acute effect on plasma antioxidant status: comparison between pre- and postmenopausal women. Eur J Nutr. 2014 Jun;53(4):1015-27. doi: 10.1007/s00394-013-0604-9. Epub 2013 Oct 26.
- Kanellos PT, Kaliora AC, Gioxari A, Christopoulou GO, Kalogeropoulos N, Karathanos VT. Absorption and bioavailability of antioxidant phytochemicals and increase of serum oxidation resistance in healthy subjects following supplementation with raisins. Plant Foods Hum Nutr. 2013 Dec;68(4):411-5. doi: 10.1007/s11130-013-0389-2.
- Subramaniyan SD, Natarajan AK. Citral, A Monoterpene Protect Against High Glucose Induced Oxidative Injury in HepG2 Cell In Vitro-An Experimental Study. J Clin Diagn Res. 2017 Aug;11(8):BC10-BC15. doi: 10.7860/JCDR/2017/28470.10377. Epub 2017 Aug 1.
- Saidi SA, Ncir M, Chaaben R, Jamoussi K, van Pelt J, Elfeki A. Liver injury following small intestinal ischemia reperfusion in rats is attenuated by Pistacia lentiscus oil: antioxidant and anti-inflammatory effects. Arch Physiol Biochem. 2017 Oct;123(4):199-205. doi: 10.1080/13813455.2017.1302961. Epub 2017 Mar 24.
- Papada E, Gioxari A, Amerikanou C, Galanis N, Kaliora AC. An Absorption and Plasma Kinetics Study of Monoterpenes Present in Mastiha Oil in Humans. Foods. 2020 Jul 30;9(8):1019. doi: 10.3390/foods9081019.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- MASTIHA OIL-BIO-GR
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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