ABSTRACT
We evaluated the long-term safety of eight adult volunteers (male 7, female 1: average age 47.4 years) ingesting powdered foods containing Coix-seed Reactive Derivatives (CRD/2.2g/day or 4.4g/day) for 1 year 8 months to 5 years (average 2 years 9 months). Body weight, vital signs (blood pressure, pulse rate), peripheral blood test, blood biochemical test, etc. were observed. We also investigated the presence or absence of side effects. The results showed no notable changes in vital signs or blood test results. From the above, it was speculated that long-term intake of CRD would not pose a safety problem. We plan to continue the study by increasing the number of observation cases in the future.
ABSTRACT
Objective: We investigated the effects of Coix-seed Reactive Derivatives (CRD) on fibroblast proliferation and collagen production. Methods: Various concentrations of CRD (0.00001%, 0.0001%, 0.001%, 0.01%, 0.1%, 1%) were added to human fibroblasts, and changes in cell count and extracellular collagen production were measured. Results: Fibroblasts proliferated by the addition of CRD, peaked at about 1.7 times when the CRD concentration was 0.0001%, and then decreased as the addition concentration increased. On the other hand, the collagen concentration in the extracellular matrix of fibroblasts increased as the CRD addition concentration increased, and the collagen concentration increased sharply at 0.1% of CRD concentration or more. Conclusion: It was suggested that CRD has a function of increasing the proliferation of fibroblasts and collagen production.
ABSTRACT
Objective: In this study, we evaluated the safety of intake of Coix-seed Reactive Derivatives (CRD) in healthy adult volunteers.Methods: Eight subjects (4 males and 4 females, ages 26.6 ± 4.7) consumed 2.0g CRD/day for 4weeks. We observed weight, vital signs(blood pressure, pulse, body temperature), complete blood count(red blood cell count, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, white blood cell count, and platelet count), hemogram, blood chemistry(Na, K, Cl, AST, ALT, γ-GTP, LDH, ALP, total protein, albumin, A/G, total bilirubin, urea nitrogen, creatinine, cholinesterase, total cholesterol, HDL cholesterol, LDL cholesterol, and neutral fats), coagulation examination (prothrombin time and partial prothrombin time), and urinalysis (sugar, protein, and occult blood in urine).Results: Although several laboratory data (MCHC, MCV and serum creatinine) changed slightly, all of these values were within normal range. Furthermore, no severe adverse effect was observed. Conclusion: These results suggest that CRD intake up to 2g/day is safe in healthy adults. Further study will be needed to define the safety of long-term administration of CRD.
ABSTRACT
Adlay(<i> Coix lachryma-jobi</i> L. <i>var. ma-yuen</i> Stapf ) is a grass crop that has long been used in traditional medicine as a nourishing food. This study investigated the inhibitory effects of adlay related substances on carcinogenesis and anti-inflammation. The hot water extract of all parts of adlay (CRD) were compared with the hot water extract of dehulled adlay (yokuinin). In addition, the Monoolein and Trilinolein components of adlay were compared.<br> As a screening date, antiproliferative effect of human cancer cells showed weak biological potency on physical dose response. Prevention effect of carcinogenesis and anti-inflammatory effect were also observed in all samplles. CRD showed stronger anti-UVB inflammatory effect than that of yokuinin; while yokuinin showed stronger anti-heating injury inflammatory effect than that of CRD. Moreover, Monoolein showed stronger effect than Trilinolein on both prevention effect of carcinogenesis and anti-inflammatory effect. These result indicated that these two extracts of adlay exhibited inhibitory effect on both tumor and inflammation. In addition, it is also suggested that Monoolein is more effective than Trilinolein.<br>
ABSTRACT
Hot water extract of adlay (<i>Coix lachryma-jobi</i> L. <i>var. ma-yuen</i> Stapf) seed, commonly called Yokuinin, has been used as herbal medicine for treating verruca vulgaris, et al. Although there have been a number of studies on the usefulness of Yokuinin, the pharmacological assessment of its husk, pellicle, and astringent skin remains unclear. In this line, we evaluated the effect of methanol extract from all parts of adlay grain (seed, husk, pellicle, astringent skin) on cancer cells and identified its useful chemical components. Results revealed that a fraction of the extract have weak growth-suppressing activity on human cervical cancer cell line (HeLa cell). In particular, 5,7-dihydroxychromone and coixol were isolated and identified from the active fraction. This indicates the possible cancer chemopreventive efficacy of methanol extract from adlay. Moreover, further tests are needed to determine the role of 5,7-dihydroxychromone.<br>