AbsorptionNCT04290312
Absorption and Bioavailability of Major Monoterpenes in Mastiha Oil; a Kinetic Study in Humans.
A study testing Mastiha oil in people with Absorption, run by Harokopio University at 1 site in Greece.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 20 to 40 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Absorption
- What is being tested?
- Mastiha oil
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 9 participants
- Where
- 1 siteGreece
- Study dates
- 1 Feb 2018to 24 Feb 2020
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 20 to 40 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Age: 20-40 years old
- BMI: 18.5-24.9 kg/m2
Who cannot join
- 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
Trial locations and contacts
1 site in 1 country.
About this study
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).
Read more
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.
.
Read the detailed description
After enrolment, the volunteers will undergo a medical and dietary assessment and their health status will be evaluated through a complete blood count. On the day of the experiment and after overnight fasting, the volunteers will consume g of mastiha oil (1ml) and blood samples will be obtained on timepoints 0.5h, 1h, 2h, 4h, 6h and 24h after intake. Until timepoint 6h, they will be allowed to consume only water. After collection, the monoterpenes will be identified in plasma samples applying a GC-MS-MS technique. Additionally, oxidative stress will be evaluated through the CuSO4 technique in serum samples.
- Conditions
- Absorption
- Being tested
- Mastiha oil
- Keywords
- mastiha oil, bioavailability
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Mastiha oilOther
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.
| Study group | Role | What they receive |
|---|---|---|
| Mastiha oil | Other | As a control to the experimental design, timepoint 0 was considered. Receives: Other: Mastiha oil |
What is being measured
The primary outcome is the main question the study is designed to answer.
Plasma concentrations of monoterpenes
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).
Measured: 24 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Feb 2020
- Study start1 Feb 2018
- Primary completion24 Feb 2020
- Study completion24 Feb 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for AbsorptionStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 9 participants (actual)
Sponsor and investigators
- Lead sponsor
- Harokopio University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Andriana C Kaliora, Harokopio University
- Investigators
- Andriana Kaliora, Ass. Professor, Principal investigator, Harokopio University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04290312
- Sponsor's protocol ID
- MASTIHA OIL-BIO-GR
- Status last verified
- Feb 2020
- First submitted
- 24 Feb 2020
- Last updated
- 28 Feb 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
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.
PubMed 29171157Abidi 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.
PubMed 28287322J 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.
PubMed 28273859Garcia-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.
PubMed 24158653Kanellos 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.
PubMed 24114059Subramaniyan 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.
PubMed 28969111Saidi 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.
PubMed 28338348Papada 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.
PubMed 32751415
Study at a glance
From the registry record, last updated by the sponsor on 28 Feb 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Absorption and Bioavailability of Major Monoterpenes in Mastiha Oil; a Kinetic Study in Humans.
- ClinicalTrials.gov ID
- NCT04290312
- Acronym / sponsor ID
- MASTIHA OIL-BIO-GR
- Conditions
- Absorption
- Keywords
- mastiha oil, bioavailability
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 9 participants (actual)
- Lead sponsor
- Harokopio UniversityUniversity, hospital or other
- Study start
- 1 Feb 2018 (actual)
- Primary completion
- 24 Feb 2020 (actual)
- Study completion
- 24 Feb 2020 (actual)
- First posted
- 28 Feb 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
.
Detailed description
After enrolment, the volunteers will undergo a medical and dietary assessment and their health status will be evaluated through a complete blood count. On the day of the experiment and after overnight fasting, the volunteers will consume g of mastiha oil (1ml) and blood samples will be obtained on timepoints 0.5h, 1h, 2h, 4h, 6h and 24h after intake. Until timepoint 6h, they will be allowed to consume only water. After collection, the monoterpenes will be identified in plasma samples applying a GC-MS-MS technique. Additionally, oxidative stress will be evaluated through the CuSO4 technique in serum samples.
Study design
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Mastiha oil | Other | Other: Mastiha oilAs a control to the experimental design, timepoint 0 was considered. |
Who may qualify
- Ages
- 20 to 40 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (2 listed)
- Age: 20-40 years old
- BMI: 18.5-24.9 kg/m2
Key exclusion criteria (5 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Mastiha oilAfter 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. | Other | Mastiha oil |
Primary outcome
Plasma concentrations of monoterpenes
Time frame: 24 hours
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).
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Feb 2020.
- Background: PubMed 29171157Papada 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.
- Background: PubMed 28287322Abidi 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.
- Background: PubMed 28273859J 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.
- Background: PubMed 24158653Garcia-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.
- Background: PubMed 24114059Kanellos 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.
- Background: PubMed 28969111Subramaniyan 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.
- Background: PubMed 28338348Saidi 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.
- Derived from this study: PubMed 32751415Papada 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.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Andriana Kaliora, Ass. Professor principal investigator
Harokopio University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Mastiha oil in people with Absorption, run by Harokopio University at 1 site in Greece.
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 2 inclusion and 5 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: finished, as of the sponsor's last update on 28 Feb 2020. 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 Greece. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Plasma concentrations of monoterpenes (time frame: 24 hours). 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 NCT04290312, 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 28 Feb 2020.