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The purpose of this clinical study is to evaluate acute effects of plant-based nutritional extracts on adult stem cells, using a randomized double-blinded placebo-controlled cross-over study design.
The purpose of this clinical study is to evaluate acute effects of plant-based nutritional extracts on adult stem cells, using a randomized double-blinded placebo-controlled cross-over study design. The research involves testing of acute effects of single doses of antioxidant-rich berry-based extracts, compared to a placebo. Blood samples are taken at baseline and 1 and 2 hours after consuming a single dose. The blood will be used to measure the numbers of different types of stem cells, to evaluate potential effects of stem cell mobilization and homing after consuming plant-based extracts. Adult stem cells are a type of cells that play a role in repairing and rejuvenating various tissue and organs in the body. At NIS Labs, we have shown that many types of plant-based nutritional products have small but reproducible and significant effects on stem cells, cytokines, and regenerative growth factors.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Berry extract I | Experimental | Plant-based antioxidant-rich berry-based extract. |
|
| Berry extract II | Experimental | Plant-based antioxidant-rich berry-based extract. |
|
| Berry extract blend | Experimental | Blend of plant-based antioxidant-rich berry-based extracts. |
|
| Placebo | Placebo Comparator |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Berry extract I | Other | Seabuckthorn berry proanthocyanidin extract 250 mg single dose |
| |
| Measure | Description | Time Frame |
|---|---|---|
| Change to stem cell numbers in blood circulation. | Flow cytometry evaluation of stem cell phenotype. | Changes at 1 and 2 hours after consumption. |
| Measure | Description | Time Frame |
|---|---|---|
| Change to numbers of circulating CD45dim CD34+ stem cells in blood circulation. | Flow cytometry evaluation of stem cell phenotype. | Changes at 1 and 2 hours after consumption. |
| Change to numbers of circulating CD45dim CD34+ CD309- stem cells in blood circulation. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Gitte Jensen | Contact | 5418840112 | gitte@nislabs.com |
| Name | Affiliation | Role |
|---|---|---|
| Gitte Jensen | NIS Labs | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Natural Immune Systems | Recruiting | Klamath Falls | Oregon | 97601 | United States |
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The study uses a randomized double-blinded placebo-controlled cross-over study design.
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Both the study participants and the research staff interacting with study participants will be blinded to the plant based extract versus placebo.
| Berry Extract II |
| Other |
Seabuckthorn berry proanthocyanidin extract 500 mg single dose |
|
| Berry extract blend | Other | Seabuckthorn berry blend with other berry-based antioxidants |
|
| Placebo | Other | Placebo |
|
Flow cytometry evaluation of stem cell phenotype. |
| Changes at 1 and 2 hours after consumption. |
| Change to numbers of circulating CD45dim CD34+ CD309+ stem cells in blood circulation. | Flow cytometry evaluation of stem cell phenotype. | Changes at 1 and 2 hours after consumption. |
| Change to numbers of circulating CD45- CD31+ CD309+ stem cells in blood circulation. | Flow cytometry evaluation of stem cell phenotype. | Changes at 1 and 2 hours after consumption. |
| Change to numbers of circulating CD45- CD90+ stem cells in blood circulation. | Flow cytometry evaluation of stem cell phenotype. | Changes at 1 and 2 hours after consumption. |