Cell viability assays use a variety of markers as indicators of metabolically active (living) cells. Examples of markers commonly used include measuring ATP levels, measuring the ability to reduce a substrate, and detecting enzymatic/protease activities unique to living cells.
Video abstract of original research paper “Rapid and selective mobilization of specific stem cell types after consumption of a polyphenol-rich extract from sea buckthorn berries (Hippophae) in healthy human subjects” published in the open access journal Clinical Interventions in Aging by Drapeau C, Benson KF, Jensen GS. Purpose: The aim of this study was to evaluate the effects of a proanthocyanidin-rich extract of sea buckthorn berry (SBB-PE) on the numbers of various types of adult stem cells in the blood circulation of healthy human subjects. Study design and methods: A randomized, double-blind, placebo-controlled, cross-over trial was conducted in 12 healthy subjects. Blood samples were taken immediately before and at 1 and 2 hours after consuming either placebo or 500 mg SBB-PE. Whole blood was used for immunophenotyping and flow cytometry to quantify the numbers of CD45dim CD34+ CD309+ and CD45dim CD34+ CD309- stem cells, CD45- CD31+ CD309+ endothelial stem cells, and CD45- CD90+ mesenchymal stem cells. Results: Consumption of SBB-PE was associated with a rapid and highly selective mobilization of CD45dim CD34+ CD309- progenitor stem cells, CD45- CD31+ CD309+ endothelial stem cells, and CD45- CD90+ lymphocytoid mesenchymal stem cells. In contrast, only minor effects were seen for CD45dim CD34+ CD309+ pluripotential stem cells. Conclusion: Consumption of SBB-PE resulted in selective mobilization of stem cell types involved in regenerative and reparative functions. These data may contribute to the understanding of the traditional uses of SBB for preventive health, regenerative health, and postponing the aging process. Read the full paper here: https://www.dovepress.com/rapid-and-s...
Gitte Jensen talks about how to get the most from your antioxidants.
Nissa first appeared in the margins of a PhD thesis in Denmark in the mid 1980’s.
Nissa currently oversees all the work by NIS Labs team members wherever they are in the world. Nissa’s biggest pet peeve is listening to well-meaning people correcting the spelling to "Nisse" (which was the original spelling) – the mistake snuck in when crossing the border into Canada – “eh”, back in the late 80’s). Nissa has been helping NIS Labs team members for many, many years. NIS Labs team members have finally convinced Nissa to share thoughts in a more public forum and embrace social media. Over the next weeks and months, look for sequel and prequel episodes.
A dinner tale involving Mac the macrophage, Thing 1, Thing 2 the T cells and of course bacteria.
Recruiting for clinical studies, Klamath Falls location. Another Nissa adventure.
Providing the science behind science-based marketing claims for the natural health products industry is what we do.
One important claim in today’s world is Rapid Immune Response. We have been running this type of study for over 2 decades.
Recruiting for clinical studies, Klamath Falls location. Another Nissa adventure.
Video abstract of clinical trial report “Consumption of nattokinase is associated with reduced blood pressure and von Willebrand factor, a cardiovascular risk marker: results from a randomized, double-blind, placebo-controlled, multicenter North American clinical trial” published in the open access journal Integrated Blood Pressure Control by authors Jensen et al. Objective: The objective of this study is to evaluate the effects of consumption of nattokinase on hypertension in a North American hypertensive population with associated genetic, dietary, and lifestyle factors. This is in extension of, and contrast to, previous studies on Asian populations. Materials and methods: A randomized, double-blind, placebo-controlled, parallel-arm clinical study was performed to evaluate nattokinase, a fermented soy extract nattō from which vitamin K2 has been removed. Based on the results from previous studies on Asian populations, 79 subjects were enrolled upon screening for elevated blood pressure who consumed placebo or 100 mg nattokinase/d for the 8-week study duration. Blood collections were performed at baseline and 8 weeks for testing plasma renin activity, von Willebrand factor, and platelet factor-4. Seventy-four people completed the study with good compliance. Results: Consumption of nattokinase was associated with a reduction in both systolic and diastolic BP. The reduction in systolic BP was seen for both sexes but was more robust in males consuming nattokinase. The average reduction in diastolic BP in the nattokinase group from 87 mmHg to 84 mmHg was statistically significant when compared to that in the group consuming placebo, where the average diastolic BP remained constant at 87 mmHg, and reached a high level of significance for males consuming nattokinase, where the average diastolic BP dropped from 86 mmHg to 81 mmHg. A decrease in vWF was seen in the female population consuming nattokinase. In the subpopulation with low plasma renin activity levels at baseline, an increase was seen for 66% of the people after 8-week consumption of nattokinase, in contrast to only 8% in the placebo group. Conclusion: The data suggest that nattokinase consumption in a North American population is associated with beneficial changes to BP in a hypertensive population, indicating sex-specific mechanisms of action of nattokinase’s effect on vWF and hypertension. Keywords: subtilisin NAT, systolic blood pressure, diastolic blood pressure, von Willebrand factor, plasma renin activity The full article can be found here: https://www.dovepress.com/consumption...
Video abstract of an original research paper “Water-soluble egg membrane enhances the immunoactivating properties of an Aloe vera-based extract of Nerium oleander leaves” published in the open access journal Clinical, Cosmetic and Investigational Dermatology by Benson KF, Newman RA, Jensen GS. Objective: To evaluate a blend of two natural ingredients on immune parameters relevant for their current topical use and potential support of microcirculation in skin tissue. Materials and methods: A blend (BL) of Aloe vera-based Nerium oleander extract (NAE- 8i, oleandrin-free) and hydrolyzed water-soluble egg membrane (WSEM) was applied to human whole-blood cultures for 24 hours, with each separate ingredient serving as a control. Immune-cell subsets were analyzed for expression levels of the activation markers CD69 and CD25. Culture supernatants were analyzed for cytokines, chemokines, and immunoregulating peptides. Results: BL increased CD69 expression on lymphocytes, monocytes, and CD3–CD56+ natural killer cells, and CD25 expression on natural killer cells. The number of CD69+CD25+ lymphocytes increased in cultures treated with BL and the separate ingredients. BL triggered production of multiple cytokines and chemokines, where CC chemokines MIP1α and MIP3α, as well as cytokines involved in wound healing – Groα, Groβ, ENA78, and fractalkine – reached levels manyfold above treatment with either NAE-8i or WSEM alone. Conclusion: Data on BL showed that WSEM strongly enhanced NAE-8i’s effects on immunoactivation in vitro. This has potential relevance for support of immunity in skin tissue, including antibacterial and antiviral defense mechanisms, wrinkle reduction, and wound care. Read the original research paper here: https://www.dovepress.com/water-solub...
Overview of who we are, what we do and how we may be able to help.
Video abstract of original research paper “Reduction of facial wrinkles by hydrolyzed watersoluble egg membrane associated with reduction of free radical stress and support of matrix production by dermal fibroblasts” published in the open access journal Clinical, Cosmetic and Investigational Dermatology by authors Jensen et al. Objective: The aim of this study was to evaluate the effects of water-soluble egg membrane (WSEM) on wrinkle reduction in a clinical pilot study and to elucidate specific mechanisms of action using primary human immune and dermal cell-based bioassays. Methods: To evaluate the effects of topical application of WSEM (8 percent) on human skin, an openlabel 8-week study was performed involving 20 healthy females between the age of 45 years and 65 years. High-resolution photography and digital analysis were used to evaluate the wrinkle depth in the facial skin areas beside the eye (crow’s feet). WSEM was tested for total antioxidant capacity and effects on the formation of reactive oxygen species by human polymorphonuclear cells. Human keratinocytes (HaCaT cells) were used for quantitative polymerase chain reaction analysis of the antioxidant response element genes Nqo1, Gclm, Gclc, and Hmox1. Evaluation of effects on human primary dermal fibroblasts in vitro included cellular viability and production of the matrix components collagen and elastin. Results: Topical use of a WSEM-containing facial cream for 8 weeks resulted in a significant reduction of wrinkle depth (P less than 0.05). WSEM contained antioxidants and reduced the formation of reactive oxygen species by inflammatory cells in vitro. Despite lack of a quantifiable effect on Nrf2, WSEM induced the gene expression of downstream Nqo1, Gclm, Gclc, and Hmox1 in human keratinocytes. Human dermal fibroblasts treated with WSEM produced more collagen and elastin than untreated cells or cells treated with dbcAMP control. The increase in collagen production was statistically significant (P less than 0.05). Conclusion: The topical use of WSEM on facial skin significantly reduced the wrinkle depth. The underlying mechanisms of this effect may be related to protection from free radical damage at the cellular level and induction of several antioxidant response elements, combined with stimulation of human dermal fibroblasts to secrete high levels of matrix components. Read the original research paper here: https://www.dovepress.com/reduction-o...
How NK cells help defend the body from viruses. Natural Killer Cells play an important role fighting viruses using interferon gamma.
Repair and Rejuvenation an immune system story, a stem cell's role, another Nissa tale.
Another installment of our Nissa series about the immune system and natural products research. In this episode, we introduce T cells and their interactions with Mac the macrophage and Bee the B cell.