Astaxanthin is a phytochemincal
in the class of Xanthophylls , belonging to the group of
Carotenoids (tetraterpenoids), found abundantly in yeast, krill,
shrimp, salmon, lobsters, etc.
Health Benefits1. Male infertilityIn the investigation of the effects of
Astaxanthin
16 mg/day (AstaCarox, AstaReal AB, Gustavsberg, Sweden) or placebo for 3
months treatment on semen parameters, reactive oxygen species (ROS),
zona-free hamster oocyte test, serum hormones including testosterone,
luteinizing hormone (LH), follicle stimulating hormone (FSH) and
Inhibin B, and spontaneous or intrauterine insemination (IUI)-induced
pregnancies, found that ROS and Inhibin B decreased significantly and
sperm linear velocity increased in the
Astaxanthin
group (n = 11), but not in the placebo group (n = 19). The results of
the zona-free hamster oocyte test tended to improve in the
Astaxanthin
group in contrast with the placebo group, though not reaching
statistical significance. The total and per cycle pregnancy rates among
the placebo cases (10.5 % and 3.6 %) were lower compared with 54.5 %
and 23.1 % respectively in the
Astaxanthin group (P = 0.028; P = 0.036), according to "Combined conventional/
antioxidant "
Astaxanthin" treatment for male infertility: a double blind, randomized trial" by Comhaire FH, El Garem Y, Mahmoud A, Eertmans F, Schoonjans F.(1)
2. Functional dyspepsiaIn the evaluation of the efficacy of the natural
antioxidant astaxanthin
in functional dyspepsia in different doses and compared with placebo,
found that at the end of therapy (week 4) no difference between the
three treatment groups was observed regarding mean Gastrointestinal
Symptom Rating Scale (GSRS) scores of abdominal pain, indigestion and
reflux syndromes. The same results were observed at the end of
follow-up. However reduction of reflux syndrome before treatment to week
4 was significantly pronounced in the higher (40mg) dose compared to
the other treatment groups (16mg and placebo, p=0.04), according to "
Efficacy of the natural antioxidant astaxanthin
in the treatment of functional dyspepsia in patients with or without
Helicobacter pylori infection: A prospective, randomized, double blind,
and placebo-controlled study" by Kupcinskas L, Lafolie P, Lignell A, Kiudelis G, Jonaitis L, Adamonis K, Andersen LP, Wadström T.(2)
3. Anti-agingIn the review of the effects of
Astaxanthin,
a xanthophyll carotenoid, cell membrane nutrient with diverse clinical
benefits indicated that in preliminary trials it showed promise for
sports performance (soccer). In cultured cells,
astaxanthin protected the mitochondria against endogenous oxygen radicals, conserved their redox (
antioxidant)
capacity, and enhanced their energy production efficiency. The
concentrations used in these cells would be attainable in humans by
modest dietary intakes.
Astaxanthin's
clinical success extends beyond protection against oxidative stress
and inflammation, to demonstrable promise for slowing age-related
functional decline, according to "
Astaxanthin, cell membrane nutrient with diverse clinical benefits and anti-aging potential" by Kidd P.(3)
4. Cardiovascular healthIn
the evualation of the an antioxidant with anti-inflammatory properties
effects and as such has potential as a therapeutic agent in
atherosclerotic cardiovascular disease of
Astaxanthin,
a xanthophyll carotenoid present in microalgae, fungi, complex plants,
seafood, flamingos and quail, found that No adverse events have been
reported and there is evidence of a reduction in biomarkers of
oxidative stress and inflammation with
astaxanthin administration. Experimental studies in several species using an ischaemia-reperfusion myocardial model demonstrated that
astaxanthin
protects the myocardium when administered both orally or intravenously
prior to the induction of the ischaemic event, according to "
Astaxanthin: a potential therapeutic agent in cardiovascular disease" by Fassett RG, Coombes JS.(4)
5. Antithrombotic and antihypertensive effectsIn the examination of the hypothesis that
astaxanthin,
a red pigment carotenoid found in salmonid and crustacean aquaculture,
for its protect on stroke-prone spontaneously hypertensive rats
(SHRSP) from vascular oxidative damage, hypertension, and cerebral
thrombosis, found that the results supported our hypothesis and strongly
suggested that the antithrombotic and antihypertensive effects of
astaxanthin
or vitamin E may be related to an increase in bioavailable NO,
possibly mediated by decreased inactivation of NO by reactive oxygen
species, according to "
Astaxanthin inhibits thrombosis in cerebral vessels of stroke-prone spontaneously hypertensive rats" by Sasaki Y, Kobara N, Higashino S, Giddings JC, Yamamoto J.(5)
6. CholesterolIn a randomized, double-blind, placebo-controlled study to investigate the effects of
astaxanthin
on lipid profiles and oxidative stress in overweight and obese adults
in Korea, found that all four biomarkers were not significantly
different between the two groups. Compared with the placebo group, MDA
and ISP were significantly lower, but TAC was significantly higher in
the
astaxanthin group at 12 weeks. These results suggest that supplementary
astaxanthin has positive effects by improving the LDL cholesterol, ApoB, and oxidative stress biomarkers, according to "
Positive effects of astaxanthin on lipid profiles and oxidative stress in overweight subjects" by Choi HD, Youn YK, Shin WG.(6)
7. Immune systemIn the testing
astaxanthin, a potent
antioxidant carotenoid and its role in modulating immune response in cats, found that there was a dose-related increase in plasma
astaxanthin concentrations, with maximum concentrations observed on wk 12. Dietary
astaxanthin enhanced DTH response to both the specific (vaccine) and nonspecific (concanavalin A) antigens. In addition, cats fed
astaxanthin
had heightened PBMC proliferation and NK cell cytotoxic activity. The
population of CD3(+) total T and CD4(+) T helper cells were also higher
in
astaxanthin-fed
cats; however, no treatment difference was found with the CD8(+) T
cytotoxic and MHC II(+) activated lymphocyte cell populations. Dietary
astaxanthin increased concentrations of plasma IgG and IgM. Therefore, dietary
astaxanthin heightened cell-mediated and humoral immune responses in cats, according to "
Astaxanthin stimulates cell-mediated and humoral immune responses in cats" by Park JS, Mathison BD, Hayek MG, Massimino S, Reinhart GA, Chew BP.(7)
8. Non-alcoholic fatty liver diseaseIn
the management of non-alcoholic fatty liver disease in full-spectrum
antioxidant therapy featuring astaxanthin coupled with lipoprivic
strategies and salsalate, indicated that
Astaxanthin
and spirulina appear to have considerable potential for controlling
the oxidative stress associated with NAFLD - the former because it may
help to prevent the mitochondrial damage that renders mitochondria a
key source of superoxide in this syndrome, the latter because it is
exceptionally rich in phycocyanobilin, a phytochemical inhibitor of
NAPDH oxidase, according to "
Full-spectrum antioxidant therapy featuring astaxanthin coupled with lipoprivic strategies and salsalate for management of non-alcoholic fatty liver disease" by
McCarty MF.(8)
9. Diabetic complicationsIn the examination of whether
astaxanthin (ASX, 3,3-dihydroxybeta, beta-carotene-4,4-dione, CAS 472-61-7), a dietary
antioxidant
carotenoid that is naturally present in algae, crustaceans, and fish,
has a protective effect on endothelial dysfunction of aortas in
diabetic rats and the possible molecular mechanism involved, indicated
that ASX could ameliorate diabetic endothelial dysfunction by
inhibiting the ox-LDLLOX-1-eNOS pathway. Treatment with ASX might be
clinically useful for diabetic complications associated with endothelial
dysfunction, according to "
Ameliorative effect of astaxanthin on endothelial dysfunction in streptozotocin-induced diabetes in male rats" by Zhao ZW, Cai W, Lin YL, Lin QF, Jiang Q, Lin Z, Chen LL.(9)
10. Colon HealthIn
the investigation of the possible inhibitory effect of AX against
inflammation-related mouse colon carcinogenesis and dextran sulfate
sodium (DSS)-induced colitis in male ICR mice, found that the dietary AX
suppresses the colitis and colitis-related colon carcinogenesis in
mice, partly through inhibition of the expression of inflammatory
cytokine and proliferation. Our findings suggest that AX is one of the
candidates for prevention of colitis and inflammation-associated colon
carcinogenesis in humans, according to "
Dietary astaxanthin inhibits colitis and colitis-associated colon carcinogenesis in mice via modulation of the inflammatory cytokines" by Yasui Y, Hosokawa M, Mikami N, Miyashita K, Tanaka T.(10)
11. Anti cancersIn
the investigation of the pharmacological roles of carotenoids in the
prevention and reduction of cancer incidence, found that carotenoids
up-regulated the expression of PPARγ and p21 and down-regulated the
expression of cyclin D1 in a dose-dependent manner. In addition,
β-carotene,
astaxanthin,
capsanthin and bixin also up-regulated the expression of Nrf2, an
important transcription factor in Keap1-Nrf2/EpRE/ARE signaling pathway.
It appears to us that PPARγ signaling pathways and Keap1-Nrf2/EpRE/ARE
signaling pathway were involved in the inhibition of K562 cell
proliferation by carotenoids and the up-regulation of PPARγ expression
at least partly contributed to the antiproliferative effects of
β-carotene,
astaxanthin, capsanthin, and bixin on K562 cells, according to "
Carotenoids
inhibit proliferation and regulate expression of peroxisome
proliferators-activated receptor gamma (PPARγ) in K562 cancer cells" by
Zhang X, Zhao WE, Hu L, Zhao L, Huang J.(11)
12. Anxiolytic effectsIn
the study of study of the combined effect of ASTA and fish oil on the
redox status in plasma and in the monoaminergic-rich anterior forebrain
region of Wistar rats with possible correlations with the anxiolytic
behavior, found that ASTA properly crosses the brain-blood barrier, our
data also address a possible indirect role of ASTA in restoring basal
oxidative conditions in anterior forebrain of animals: by improving
GSH-based
antioxidant
capacity of plasma. Preliminary anxiolytic tests performed in the
elevated plus maze are in alignment with our biochemical observations,
according to "
Astaxanthin limits fish oil-related oxidative insult in the anterior forebrain of Wistar rats: putative anxiolytic effects?" by Mattei R, Polotow TG, Vardaris CV, Guerra BA, Leite JR, Otton R, Barros MP.(12)
13. AntioxidantsIn a randomized, double-blind study was performed to investigate the effect of
astaxanthin (ASX), which is known to be a potent
antioxidant,
on oxidative stress in overweight and obese adults in Korea, found that
compared with baseline, the MDA (by 34.6% and 35.2%) and ISP (by 64.9%
and 64.7%) levels were significantly lowered, whereas SOD (by 193% and
194%) and TAC (by 121% and 125%) levels were significantly increased in
two dose groups after the 3 week intervention. This study revealed
that supplemental ASX for 3 weeks improved oxidative stress biomarkers
by suppressing lipid peroxidation and stimulating the activity of the
antioxidant defense system, according to "
Effects of astaxanthin on oxidative stress in overweight and obese adults" by Choi HD, Kim JH, Chang MJ, Kyu-Youn Y, Shin WG.(13)
14. Anti inflammatory effectsIn
the examination focused on the antioxidant effect of Astaxanthin (AST)
and investigation of the efficacy of AST in endotoxin-induced uveitis
(EIU) in rats, found that AST suppressed the development of EIU in a
dose-dependent fashion. The anti-inflammatory effect of 100 mg/kg AST
was as strong as that of 10 mg/kg prednisolone. AST also decreased
production of NO, activity of inducible nitric oxide synthase (NOS),
and production of PGE2 and TNF-alpha in RAW264.7 cells in vitro in a
dose-dependent manner, according to "
Effects of astaxanthin on lipopolysaccharide-induced inflammation in vitro and in vivo" by Ohgami K, Shiratori K, Kotake S, Nishida T, Mizuki N, Yazawa K, Ohno S.(14)
15. Neuroprotective effect In
the study, carried out to further investigate the neuroprotective
effect of AST on oxidative stress induced toxicity in primary culture
of cortical neurons and on focal cerebral ischemia-reperfusion induced
brain
damage in rats, found that the neuronal injury was significantly
improved by pretreatment of AST at 80mg/kg. Taken together, these
results suggest that pretreatment with AST exhibits noticeable
neuroprotection against
brain damage induced by ischemia-reperfusion and the antioxidant activity of AST maybe partly responsible for it, according to "
Neuroprotective effect of astaxanthin on H(2)O(2)-induced neurotoxicity in vitro and on focal cerebral ischemia in vivo" by Lu YP, Liu SY, Sun H, Wu XM, Li JJ, Zhu L.(15)
16.
Dihydrotestosterone, testosterone and estradiol levelsIn
a clinical study of clinically, 42 healthy males ages 37 to 70 years
were divided into two groups of twenty-one and dosed with either 800
mg/day or 2000 mg/day of Alphastat(R) (Mytosterone(trade mark)) for
fourteen days, found that both dose groups showed significant (p = 0.05)
increases in T and decreases in DHT within three days of treatment
with Alphastat(R) (Mytosterone(trade mark)). Between group statistical
analysis showed no significant (p = 0.05) difference, indicating the
effect was not dose dependent and that 800 mg/per day is equally
effective as 2000 mg/day for increasing T and lowering DHT. Blood
levels of ES however, decreased significantly (p = 0.05) in the 2000
mg/day dose group but not in the 800 mg/day dose group indicating a
dose dependant decrease in E levels, according to "
An open label, dose response study to determine the effect of a dietary supplement on dihydrotestosterone, testosterone and estradiol levels in healthy males" by Angwafor F 3rd, Anderson ML.(16)
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Back to Kyle J. Norton Home page http://kylejnorton.blogspot.ca Sources(1) http://www.ncbi.nlm.nih.gov/pubmed/16110353(2) http://www.ncbi.nlm.nih.gov/pubmed/18467083(3) http://www.ncbi.nlm.nih.gov/pubmed/22214255(4) http://www.ncbi.nlm.nih.gov/pubmed/21556169(5) http://www.ncbi.nlm.nih.gov/pubmed/22074803(6) http://www.ncbi.nlm.nih.gov/pubmed/21964877(7) http://www.ncbi.nlm.nih.gov/pubmed/21930306(8) http://www.ncbi.nlm.nih.gov/pubmed/21764223(9) http://www.ncbi.nlm.nih.gov/pubmed/21650083(10) http://www.ncbi.nlm.nih.gov/pubmed/21621527(11) http://www.ncbi.nlm.nih.gov/pubmed/21620794(12) http://www.ncbi.nlm.nih.gov/pubmed/21619892(13) http://www.ncbi.nlm.nih.gov/pubmed/21480416(14) http://www.ncbi.nlm.nih.gov/pubmed/12766075(15) http://www.ncbi.nlm.nih.gov/pubmed/20846510(16) http://www.ncbi.nlm.nih.gov/pubmed/18700016