Biological AvailabilityNCT02847117
Bioavailability of the Microconstituents of Natural Chios Mastiha in Healthy Adults.
A study testing Mastiha in people with Biological Availability, run by Harokopio University at 1 site in Greece.
Trial summary
Mastiha is a natural product from the tree Pistacia lentiscus var. Chia (Anacardiaceae) growing exclusively in the Southern part of Chios Island. It is the natural resinous exudate produced after longitudinal incisions made at close intervals from the base of the trunk up to the thicker branches of the tree. U.S. 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
- Biological Availability
- What is being tested?
- Mastiha
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 1 siteGreece
- Study dates
- Jul 2016to 10 Mar 2021
- 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
- BMI > 25 kg/m2
- Alcohol or drug abuse
- Medication, vitamin or inorganic supplements
- Vegan or macrobiotic diet before and during the study
- Gastrointestinal diseases, such as IBD, peptic ulcer or GI cancer
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Bioavailability Study of the Natural Chios Mastiha in Blood and Urine Samples of Healthy Adults.
Mastiha is a natural product from the tree Pistacia lentiscus var. Chia (Anacardiaceae) growing exclusively in the Southern part of Chios Island. It is the natural resinous exudate produced after longitudinal incisions made at close intervals from the base of the trunk up to the thicker branches of the tree. U.S. Food and Drug Administration has classified Mastiha as GRAS. Previous research demonstrates Mastiha's safety, as well as anti-inflammatory, antimicrobial and antioxidant properties. In addition, the European Medicine Agency has recently recognized Mastiha as a natural medicine and classified it to the category of traditional herbal medicines in diarrhea problems, mild dyspeptic disorders, skin inflammation and healing (EMA/HMPC/46758/2015).
However, the bioavailability of its microconstituents in human biological samples is still undetermined. To this end, the current study aims to investigate the whether Mastiha's compounds are bioavailable in healthy adults. Twenty apparently healthy men, aged 20-40 years old, will be enrolled based on certain inclusion and exclusion criteria. The staff of the study will provide detailed information regarding the aims, the methods, anticipated benefits and potential hazards of the study and all patients will receive the Patient Information Leaflet (PIL). Ample time (48 hours) will be provided in order to decide whether they want to participate in the protocol. Each patient agreeing to participate will sign an Informed Consent document and the staff will explain to patients that they are under no obligation to enter the trial and that they can withdraw at any time during the trial, without having to give a reason. A copy of the signed Informed Consent will be given to the participant.
Read more
After enrollment, the volunteers will undergo a medical and dietary assessment and their health status will be evaluated through a complete blood count. Then, they will follow a low-phytochemical diet for five days, meaning that they will exclude fruits, vegetables, legumes, coffee, tea, alcoholic beverages and chocolate. On the day of the experiment and after overnight fasting, the volunteers will consume 10g of natural Mastiha and blood samples will be obtained on timepoints 0h, 30min, 1h, 2h, 4h, 6h and 24h after Mastiha intake. Until timepoint 6h, they will be allowed to consume only water. Urine samples will also be collected on timepoints 0h, 4h, 8h and 24h.
After collection, the phenolic and terpenoid content or metabolites of Mastiha will be identified in plasma samples applying LC-HRMS. Additionally, the metabolomic profile will be assessed in plasma samples with LC-HRMS and in urine samples with NMR-based metabolomics. Oxidative stress will be evaluated through the CuSO4 technique and oxidised LDL levels in serum samples, as well as F-2 isoprostanes in urine samples.
- Conditions
- Biological Availability
- Being tested
- Mastiha
- Keywords
- Natural Mastiha, Bioavailability
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
MastihaOther
The volunteers will follow a low-phytochemical diet for five days, meaning that they will exclude fruits, vegetables, legumes, coffee, tea, alcoholic beverages and chocolate. On the day of the experiment and after overnight fasting, the volunteers will consume 10g of natural Mastiha and blood samples will be obtained on timepoints 0h, 30min, 1h, 2h, 4h, 6h and 24h after Mastiha intake. Until timepoint 6h, will be allowed to consume only water. Urine samples will also be collected on timepoints 0h, 4h, 8h and 24h.
| Study group | Role | What they receive |
|---|---|---|
| Mastiha | Other | Not described Receives: Other: Mastiha |
What is being measured
The primary outcome is the main question the study is designed to answer.
Phenolic and terpenoid content or metabolites of Mastiha identification
Measured: The phenolic and terpenoid content or metabolites of Mastiha will be identified in plasma samples applying LC-HRMS. Data will be presented through study completion, an average of 1 year.
Targeted and untargeted metabolic profile assessment
Measured: Plasma metabolites assessment with GC-MS, LC-HRMS and urine metabolites assessment with NMR will take place . Data will be presented through study completion, an average of 1 year.
Secondary outcomes (1)
Oxidative stress assessment
Measured: Serum resistance to oxidation will be assessed through the CuSO4 technique, oxidised LDL levels and uric acid levels. F-2 isoprostanes determination will take place in urine samples. Data will be presented through study completion, an average of 1 year.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Jul 2016 (estimated)
- Study startJul 2016
- Primary completionFeb 2017
- Study completion10 Mar 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (16)Papers the sponsor has linked to this study.
- Other trials for Biological AvailabilityStudies 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
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- Harokopio University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Andriana C Kaliora, Harokopio University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02847117
- Sponsor's protocol ID
- Mastiha BIO-GR (304)
- Status last verified
- Jun 2021
- First submitted
- 25 Jul 2016
- Last updated
- 21 Jun 2021
- Results posted
- No
- Data monitoring committee
- No
- Individual data sharing
- No
Publications
Romani A, Pinelli P, Galardi C, Mulinacci N, Tattini M. Identification and quantification of galloyl derivatives, flavonoid glycosides and anthocyanins in leaves of Pistacia lentiscus L. Phytochem Anal. 2002 Mar-Apr;13(2):79-86. doi: 10.1002/pca.627.
PubMed 12018027Kaliora AC, Dedoussis GV, Schmidt H. Dietary antioxidants in preventing atherogenesis. Atherosclerosis. 2006 Jul;187(1):1-17. doi: 10.1016/j.atherosclerosis.2005.11.001. Epub 2005 Nov 28.
PubMed 16313912Crowell PL. Prevention and therapy of cancer by dietary monoterpenes. J Nutr. 1999 Mar;129(3):775S-778S. doi: 10.1093/jn/129.3.775S.
PubMed 10082788Gonzalez-Burgos E, Gomez-Serranillos MP. Terpene compounds in nature: a review of their potential antioxidant activity. Curr Med Chem. 2012;19(31):5319-41. doi: 10.2174/092986712803833335.
PubMed 22963623Inouye S, Takizawa T, Yamaguchi H. Antibacterial activity of essential oils and their major constituents against respiratory tract pathogens by gaseous contact. J Antimicrob Chemother. 2001 May;47(5):565-73. doi: 10.1093/jac/47.5.565.
PubMed 11328766Inouye S, Yamaguchi H, Takizawa T. Screening of the antibacterial effects of a variety of essential oils on respiratory tract pathogens, using a modified dilution assay method. J Infect Chemother. 2001 Dec;7(4):251-4. doi: 10.1007/s101560170022.
PubMed 11810593Ohno T, Kita M, Yamaoka Y, Imamura S, Yamamoto T, Mitsufuji S, Kodama T, Kashima K, Imanishi J. Antimicrobial activity of essential oils against Helicobacter pylori. Helicobacter. 2003 Jun;8(3):207-15. doi: 10.1046/j.1523-5378.2003.00146.x.
PubMed 12752733Ding Y, Nguyen HT, Kim SI, Kim HW, Kim YH. The regulation of inflammatory cytokine secretion in macrophage cell line by the chemical constituents of Rhus sylvestris. Bioorg Med Chem Lett. 2009 Jul 1;19(13):3607-10. doi: 10.1016/j.bmcl.2009.04.129. Epub 2009 May 3.
PubMed 19447618Rodrigues TG, Fernandes A Jr, Sousa JP, Bastos JK, Sforcin JM. In vitro and in vivo effects of clove on pro-inflammatory cytokines production by macrophages. Nat Prod Res. 2009;23(4):319-26. doi: 10.1080/14786410802242679.
PubMed 19296372Andrikopoulos NK, Kaliora AC, Assimopoulou AN, Papapeorgiou VP. Biological activity of some naturally occurring resins, gums and pigments against in vitro LDL oxidation. Phytother Res. 2003 May;17(5):501-7. doi: 10.1002/ptr.1185.
PubMed 12748987Gioxari A, Kaliora AC, Papalois A, Agrogiannis G, Triantafillidis JK, Andrikopoulos NK. Pistacia lentiscus resin regulates intestinal damage and inflammation in trinitrobenzene sulfonic acid-induced colitis. J Med Food. 2011 Nov;14(11):1403-11. doi: 10.1089/jmf.2010.0240. Epub 2011 May 25.
PubMed 21612460Papalois A, Gioxari A, Kaliora AC, Lymperopoulou A, Agrogiannis G, Papada E, Andrikopoulos NK. Chios mastic fractions in experimental colitis: implication of the nuclear factor kappaB pathway in cultured HT29 cells. J Med Food. 2012 Nov;15(11):974-83. doi: 10.1089/jmf.2012.0018. Epub 2012 Aug 14.
PubMed 22891614Williamson G, Manach C. Bioavailability and bioefficacy of polyphenols in humans. II. Review of 93 intervention studies. Am J Clin Nutr. 2005 Jan;81(1 Suppl):243S-255S. doi: 10.1093/ajcn/81.1.243S.
PubMed 15640487Kountouri AM, Mylona A, Kaliora AC, Andrikopoulos NK. Bioavailability of the phenolic compounds of the fruits (drupes) of Olea europaea (olives): impact on plasma antioxidant status in humans. Phytomedicine. 2007 Oct;14(10):659-67. doi: 10.1016/j.phymed.2007.06.001. Epub 2007 Sep 17.
PubMed 17870451Kanellos PT, Kaliora AC, Liaskos C, Tentolouris NK, Perrea D, Karathanos VT. A study of glycemic response to Corinthian raisins in healthy subjects and in type 2 diabetes mellitus patients. Plant Foods Hum Nutr. 2013 Jun;68(2):145-8. doi: 10.1007/s11130-013-0348-y.
PubMed 23564595
Study at a glance
From the registry record, last updated by the sponsor on 21 Jun 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Bioavailability Study of the Natural Chios Mastiha in Blood and Urine Samples of Healthy Adults.
- ClinicalTrials.gov ID
- NCT02847117
- Acronym / sponsor ID
- Mastiha BIO-GR (304)
- Conditions
- Biological Availability
- Keywords
- Natural Mastiha, Bioavailability
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- Harokopio UniversityUniversity, hospital or other
- Study start
- Jul 2016 (actual)
- Primary completion
- Feb 2017 (actual)
- Study completion
- 10 Mar 2021 (actual)
- First posted
- 28 Jul 2016 (estimated)
- 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.
Mastiha is a natural product from the tree Pistacia lentiscus var. Chia (Anacardiaceae) growing exclusively in the Southern part of Chios Island. It is the natural resinous exudate produced after longitudinal incisions made at close intervals from the base of the trunk up to the thicker branches of the tree. U.S. Food and Drug Administration has classified Mastiha as GRAS. Previous research demonstrates Mastiha's safety, as well as anti-inflammatory, antimicrobial and antioxidant properties. In addition, the European Medicine Agency has recently recognized Mastiha as a natural medicine and classified it to the category of traditional herbal medicines in diarrhea problems, mild dyspeptic disorders, skin inflammation and healing (EMA/HMPC/46758/2015).
However, the bioavailability of its microconstituents in human biological samples is still undetermined. To this end, the current study aims to investigate the whether Mastiha's compounds are bioavailable in healthy adults. Twenty apparently healthy men, aged 20-40 years old, will be enrolled based on certain inclusion and exclusion criteria. The staff of the study will provide detailed information regarding the aims, the methods, anticipated benefits and potential hazards of the study and all patients will receive the Patient Information Leaflet (PIL). Ample time (48 hours) will be provided in order to decide whether they want to participate in the protocol. Each patient agreeing to participate will sign an Informed Consent document and the staff will explain to patients that they are under no obligation to enter the trial and that they can withdraw at any time during the trial, without having to give a reason. A copy of the signed Informed Consent will be given to the participant.
After enrollment, the volunteers will undergo a medical and dietary assessment and their health status will be evaluated through a complete blood count. Then, they will follow a low-phytochemical diet for five days, meaning that they will exclude fruits, vegetables, legumes, coffee, tea, alcoholic beverages and chocolate. On the day of the experiment and after overnight fasting, the volunteers will consume 10g of natural Mastiha and blood samples will be obtained on timepoints 0h, 30min, 1h, 2h, 4h, 6h and 24h after Mastiha intake. Until timepoint 6h, they will be allowed to consume only water. Urine samples will also be collected on timepoints 0h, 4h, 8h and 24h.
After collection, the phenolic and terpenoid content or metabolites of Mastiha will be identified in plasma samples applying LC-HRMS. Additionally, the metabolomic profile will be assessed in plasma samples with LC-HRMS and in urine samples with NMR-based metabolomics. Oxidative stress will be evaluated through the CuSO4 technique and oxidised LDL levels in serum samples, as well as F-2 isoprostanes in urine 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 | Other | Other: Mastiha |
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)
- BMI > 25 kg/m2
- Alcohol or drug abuse
- Medication, vitamin or inorganic supplements
- Vegan or macrobiotic diet before and during the study
- Gastrointestinal diseases, such as IBD, peptic ulcer or GI 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 |
|---|---|---|
| MastihaThe volunteers will follow a low-phytochemical diet for five days, meaning that they will exclude fruits, vegetables, legumes, coffee, tea, alcoholic beverages and chocolate. On the day of the experiment and after overnight fasting, the volunteers will consume 10g of natural Mastiha and blood samples will be obtained on timepoints 0h, 30min, 1h, 2h, 4h, 6h and 24h after Mastiha intake. Until timepoint 6h, will be allowed to consume only water. Urine samples will also be collected on timepoints 0h, 4h, 8h and 24h. | Other | Mastiha |
Primary outcome
Phenolic and terpenoid content or metabolites of Mastiha identification
Time frame: The phenolic and terpenoid content or metabolites of Mastiha will be identified in plasma samples applying LC-HRMS. Data will be presented through study completion, an average of 1 year.
Targeted and untargeted metabolic profile assessment
Time frame: Plasma metabolites assessment with GC-MS, LC-HRMS and urine metabolites assessment with NMR will take place . Data will be presented through study completion, an average of 1 year.
1 secondary outcome
Oxidative stress assessment
Time frame: Serum resistance to oxidation will be assessed through the CuSO4 technique, oxidised LDL levels and uric acid levels. F-2 isoprostanes determination will take place in urine samples. Data will be presented through study completion, an average of 1 year.
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 21 Jun 2021.
- Background: PubMed 12018027Romani A, Pinelli P, Galardi C, Mulinacci N, Tattini M. Identification and quantification of galloyl derivatives, flavonoid glycosides and anthocyanins in leaves of Pistacia lentiscus L. Phytochem Anal. 2002 Mar-Apr;13(2):79-86. doi: 10.1002/pca.627.
- Background: PubMed 16313912Kaliora AC, Dedoussis GV, Schmidt H. Dietary antioxidants in preventing atherogenesis. Atherosclerosis. 2006 Jul;187(1):1-17. doi: 10.1016/j.atherosclerosis.2005.11.001. Epub 2005 Nov 28.
- Background: PubMed 10082788Crowell PL. Prevention and therapy of cancer by dietary monoterpenes. J Nutr. 1999 Mar;129(3):775S-778S. doi: 10.1093/jn/129.3.775S.
- Background: PubMed 22963623Gonzalez-Burgos E, Gomez-Serranillos MP. Terpene compounds in nature: a review of their potential antioxidant activity. Curr Med Chem. 2012;19(31):5319-41. doi: 10.2174/092986712803833335.
- Background: PubMed 11328766Inouye S, Takizawa T, Yamaguchi H. Antibacterial activity of essential oils and their major constituents against respiratory tract pathogens by gaseous contact. J Antimicrob Chemother. 2001 May;47(5):565-73. doi: 10.1093/jac/47.5.565.
- Background: PubMed 11810593Inouye S, Yamaguchi H, Takizawa T. Screening of the antibacterial effects of a variety of essential oils on respiratory tract pathogens, using a modified dilution assay method. J Infect Chemother. 2001 Dec;7(4):251-4. doi: 10.1007/s101560170022.
- Background: PubMed 12752733Ohno T, Kita M, Yamaoka Y, Imamura S, Yamamoto T, Mitsufuji S, Kodama T, Kashima K, Imanishi J. Antimicrobial activity of essential oils against Helicobacter pylori. Helicobacter. 2003 Jun;8(3):207-15. doi: 10.1046/j.1523-5378.2003.00146.x.
- Background: PubMed 19447618Ding Y, Nguyen HT, Kim SI, Kim HW, Kim YH. The regulation of inflammatory cytokine secretion in macrophage cell line by the chemical constituents of Rhus sylvestris. Bioorg Med Chem Lett. 2009 Jul 1;19(13):3607-10. doi: 10.1016/j.bmcl.2009.04.129. Epub 2009 May 3.
- Background: PubMed 19296372Rodrigues TG, Fernandes A Jr, Sousa JP, Bastos JK, Sforcin JM. In vitro and in vivo effects of clove on pro-inflammatory cytokines production by macrophages. Nat Prod Res. 2009;23(4):319-26. doi: 10.1080/14786410802242679.
- Background: PubMed 12748987Andrikopoulos NK, Kaliora AC, Assimopoulou AN, Papapeorgiou VP. Biological activity of some naturally occurring resins, gums and pigments against in vitro LDL oxidation. Phytother Res. 2003 May;17(5):501-7. doi: 10.1002/ptr.1185.
- Background: PubMed 21612460Gioxari A, Kaliora AC, Papalois A, Agrogiannis G, Triantafillidis JK, Andrikopoulos NK. Pistacia lentiscus resin regulates intestinal damage and inflammation in trinitrobenzene sulfonic acid-induced colitis. J Med Food. 2011 Nov;14(11):1403-11. doi: 10.1089/jmf.2010.0240. Epub 2011 May 25.
- Background: PubMed 22891614Papalois A, Gioxari A, Kaliora AC, Lymperopoulou A, Agrogiannis G, Papada E, Andrikopoulos NK. Chios mastic fractions in experimental colitis: implication of the nuclear factor kappaB pathway in cultured HT29 cells. J Med Food. 2012 Nov;15(11):974-83. doi: 10.1089/jmf.2012.0018. Epub 2012 Aug 14.
- 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.
The record lists no contact. Use the official record to reach the sponsor.
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 in people with Biological Availability, 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 21 Jun 2021. 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?
Phenolic and terpenoid content or metabolites of Mastiha identification (time frame: The phenolic and terpenoid content or metabolites of Mastiha will be identified in plasma samples applying LC-HRMS. Data will be presented through study completion, an average of 1 year.). The study lists 2 primary outcomes in all. 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 NCT02847117, which also lists 16 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 21 Jun 2021.