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Spirulina

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https://www.readbyqxmd.com/read/28393188/a-heptameric-peptide-purified-from-spirulina%C3%A2-sp-gastrointestinal-hydrolysate-inhibits-angiotensin-i-converting-enzyme-and-angiotensin%C3%A2-ii-induced-vascular-dysfunction-in-human-endothelial-cells
#1
Seong-Yeong Heo, Seok-Chun Ko, Chang Su Kim, Gun-Woo Oh, Bomi Ryu, Zhong-Ji Qian, Geunhyung Kim, Won Sun Park, Il-Whan Choi, Thi Tuong Vy Phan, Soo-Jin Heo, Do-Hyung Kang, Myunggi Yi, Won-Kyo Jung
In this study, a marine microalga Spirulina sp.-derived protein was hydrolyzed using gastrointestinal enzymes to produce an angiotensin I (Ang I)-converting enzyme (ACE) inhibitory peptide. Following consecutive purification, the potent ACE inhibitory peptide was composed of 7 amino acids, Thr-Met‑Glu‑Pro‑Gly‑Lys-Pro (molecular weight, 759 Da). Analysis using the Lineweaver-Burk plot and molecular modeling suggested that the purified peptide acted as a mixed non-competitive inhibitor of ACE...
April 4, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28387444/comparative-modulation-of-levels-of-oxidative-stress-in-the-liver-of-anti-tuberculosis-drug-treated-wistar-rats-by-vitamin-b12-beta-carotene-and-spirulina-fusiformis-role-of-nf-kb-inos-il-6-and-il-10
#2
Sherry Joseph Martin, Evan Prince Sabina
PURPOSE: Isoniazid (INH) and Rifampicin (RIF) are known hepatotoxic agents. We compared the efficacy of Spirulina fusiformis and its active components vitamin B12 and beta-carotene in attenuating INH & RIF induced hepatotoxicity. We also tried to elucidate the inflammatory mechanism behind anti-tuberculosis drug induced hepatotoxicity. METHODS: INH & RIF were administered to Wistar albino rats for 28 days to induce hepatotoxicity. Spirulina fusiformis, vitamin B12 and beta-carotene were co-administered with INH & RIF and their hepatoprotective, antioxidant and immunomodulatory roles were studied through blood and liver analysis...
April 7, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28384218/a-novel-multicopper-oxidase-laccase-from-cyanobacteria-purification-characterization-with-potential-in-the-decolorization-of-anthraquinonic-dye
#3
Sumbul Afreen, Tooba Naz Shamsi, Mohd Affan Baig, Nadeem Ahmad, Sadaf Fatima, M Irfan Qureshi, Md Imtaiyaz Hassan, Tasneem Fatma
A novel extracellular laccase enzyme produced from Spirulina platensis CFTRI was purified by ultrafiltration, cold acetone precipitation, anion exchange and size exclusion chromatography with 51.5% recovery and 5.8 purification fold. The purified laccase was a monomeric protein with molecular mass of ~66 kDa that was confirmed by zymogram analysis and peptide mass fingerprinting. The optimum pH and temperature of the enzyme activity was found at 3.0 and 30°C using ABTS as substrate but the enzyme was quite stable at high temperature and alkaline pH...
2017: PloS One
https://www.readbyqxmd.com/read/28357609/the-inhibitory-effect-of-c-phycocyanin-containing-protein-extract-c-pc-extract-on-human-matrix-metalloproteinases-mmp-2-and-mmp-9-in-hepatocellular-cancer-cell-line-hepg2
#4
Mugdha Kunte, Krutika Desai
Spirulina platensis :have been studied for several biological activities. In the current study C-phycocyanin containing protein extract (C-PC extract) of Spirulina platensis have been studied for its effect on human matrix metalloproteinases (MMP-1, MMP-2 and MMP-9) and tissue inhibitors of MMPs (TIMP-1 and TIMP-2). In the present study, breast cancer cell line (MDA-MB 231) and hepatocellular cancer cell line (HepG2) were examined for inhibition of MMPs at different levels of expression after C-PC extract treatment...
March 30, 2017: Protein Journal
https://www.readbyqxmd.com/read/28344024/putative-model-based-on-itraq-proteomics-for-spirulina-morphogenesis-mechanisms
#5
Fu-Shuang Wang, Shi-Rui Dong, Hong-Yu Zhang, Su-Ying Wang
The morphology of Spirulina during cultivation is susceptible to external interferences, but the morphogenesis mechanism is still unclear. Here the proteomic changes of linear Spirulina and spiral Spirulina were comparatively investigated via isobaric tag for relative and absolute quantitation (iTRAQ). Totally 165 and 167 differences in proteins expression were screened out from the TJSD2/TJSD3 and TJBC4-1/TJBC4-2 groups, respectively. Gene ontology and metabolic pathway analysis of differences in proteins expression uncovered the metabolic pathways (photosynthesis, carbon fixation, sugar metabolism) that were significantly enriched with the proteins correlated with Spirulina morphogenesis...
March 23, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28342576/biological-co2-mitigation-from-coal-power-plant-by-chlorella-fusca-and-spirulina-sp
#6
Jessica Hartwig Duarte, Etiele Greque de Morais, Elisângela Martha Radmann, Jorge Alberto Vieira Costa
CO2 biofixation by microalgae and cyanobacteria is an environmentally sustainable way to mitigate coal burn gas emissions. In this work the microalga Chlorella fusca LEB 111 and the cyanobacteria Spirulina sp. LEB 18 were cultivated using CO2 from coal flue gas as a carbon source. The intermittent flue gas injection in the cultures enable the cells growth and CO2 biofixation by these microorganisms. The Chlorella fusca isolated from a coal power plant could fix 2.6 times more CO2 than Spirulina sp. The maximum daily CO2 from coal flue gas biofixation was obtained with Chlorella fusca (360...
March 12, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28341613/radical-scavenging-activity-of-a-sunscreen-enriched-by-antioxidants-providing-protection-in-the-whole-solar-spectral-range
#7
Carla Souza, Patrícia Maia Campos, Sabine Schanzer, Stephanie Albrecht, Silke B Lohan, Juergen Lademann, Maxim E Darvin, Martina C Meinke
The literature claims that incorporation of antioxidants into sunscreens provides additional skin photoprotection by scavenging free radicals formed due to sun radiation, but there are limited in vivo studies that support this hypothesis. This study aims to examine whether addition of antioxidants to a broad-spectrum sunscreen increases its photoprotective effect in real-use conditions. Sunscreen formulations composed of stable UV filters (Tinosorb® S, Tinosorb® M, Uvinul® APlus, and Uvinul® T150) alone or in combination with antioxidants (Spirulina and dimethylmethoxy chromanol-loaded solid lipid nanoparticles) were developed and their appearance, odor, rheological behavior, Sun Protection Factor (SPF), and UVA protection were analyzed...
March 21, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28341382/assisting-cultivation-of-photosynthetic-microorganisms-by-microbial-fuel-cells-to-enhance-nutrients-recovery-from-wastewater
#8
Alessandra Colombo, Stefania Marzorati, Giorgio Lucchini, Pierangela Cristiani, Deepak Pant, Andrea Schievano
Spirulina was cultivated in cathodic compartments of photo-microbial fuel cells (P-MFC). Anodic compartments were fed with swine-farming wastewater, enriched with sodium acetate (2.34gCODL(-1)). Photosynthetic oxygen generation rates were sufficient to sustain cathodic oxygen reduction, significantly improving P-MFC electrochemical performances, as compared to water-cathode control experiments. Power densities (0.8-1Wm(-2)) approached those of air-cathode MFCs, run as control. COD was efficiently removed and only negligible fractions leaked to the cathodic chamber...
March 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28335416/supplementation-with-phycocyanobilin-citrulline-taurine-and-supranutritional-doses-of-folic-acid-and-biotin-potential-for-preventing-or-slowing-the-progression-of-diabetic-complications
#9
Mark F McCarty
Oxidative stress, the resulting uncoupling of endothelial nitric oxide synthase (eNOS), and loss of nitric oxide (NO) bioactivity, are key mediators of the vascular and microvascular complications of diabetes. Much of this oxidative stress arises from up-regulated nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity. Phycocyanobilin (PhyCB), the light-harvesting chromophore in edible cyanobacteria such as spirulina, is a biliverdin derivative that shares the ability of free bilirubin to inhibit certain isoforms of NADPH oxidase...
March 14, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/28325998/glucomannan-and-glucomannan-plus-spirulina-enriched-pork-affect-liver-fatty-acid-profile-ldl-receptor-expression-and-antioxidant-status-in-zucker-fa-fa-rats-fed-atherogenic-diets
#10
Laura González-Torres, Cátia Matos, Miguel Vázquez-Velasco, Jorge A Santos-López, Iria Sánchez-Martínez, Camino García-Fernández, Sara Bastida, Juana Benedí, Francisco J Sánchez-Muniz
We evaluated the effects of glucomannan or glucomannan plus spirulina-restructured pork (RP) on liver fatty acid profile, desaturase/elongase enzyme activities and oxidative status of Zucker fa/fa rats for seven weeks. Control (C), glucomannan (G) and glucomannan/spirulina (GS)-RP; HC (cholesterol-enriched control), HG and HGS (cholesterol-enriched glucomannan and glucomannan/spirulina-RP) experimental diets were tested. Increased metabolic syndrome markers were found in C, G and GS rats. Cholesterol feeding increased liver size, fat, and cholesterol and reduced antioxidant enzyme levels and expressions...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28299588/chemical-cues-which-include-amino-acids-mediate-species-specific-feeding-behavior-in-invasive-filter-feeding-bigheaded-carps
#11
Aaron W Claus, Peter W Sorensen
This study tested whether and how dissolved chemicals might assist food recognition in two filter-feeding fishes, the silver (Hypophthalmichthys molitrix) and the bighead carp (H. nobilis). These species evolved in Asia, are now invasive in the Mississippi River, and feed voraciously on microparticles including plankton. The food habits and biology of these carps are broadly similar to many filter-feeding fish, none of whose chemical ecology has been examined. We conducted five experiments. First, we demonstrated that buccal-pharngeal pumping (BPP), a behavior in which fish pump water into their buccal cavities, is responsible for sampling food: BPP activity in both silver and bighead carps was low and increased nearly 25-fold after exposure to a filtrate of a planktonic food mixture (P < 0...
March 15, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28288400/c-phycocyanin-suppresses-transforming-growth-factor-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-human-epithelial-cells
#12
Dhamotharan Pattarayan, Dheeran Rajarajan, Sivanantham Ayyanar, Rajaguru Palanichamy, Rajasekaran Subbiah
BACKGROUND: Epithelial mesenchymal transition (EMT) is a process through which epithelial cells undergo multiple biochemical changes, causing them to differentiate into a mesenchymal-cell phenotype. This process has been shown to contribute to the development of fibrotic diseases. C-phycocyanin (C-PC) is a phycobiliprotein extracted from Spirulina platensis. This study was done to investigate the effect of C-PC on transforming growth factor-β1 (TGF-β1)-induced EMT and an EMT associated proliferation in human epithelial cell lines...
January 5, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28283330/microwave-enhanced-pyrolysis-of-macroalgae-and-microalgae-for-syngas-production
#13
Yu Hong, Wanru Chen, Xiang Luo, Chengheng Pang, Edward Lester, Tao Wu
In this study, three different marine biomasses, i.e., microalgae-spirulina, chlorella and macroalgae-porphyra, were pyrolyzed in a laboratory-scale multimode-microwave cavity at 400, 550 and 700°C. Ovalbumin and cellulose were also chosen as model compounds to simulate algae. The influence of heating rate on pyrolysis and the βi curves of different samples under different temperatures were studied in detail. The porphyra was found to be the most reactive and produced the largest gaseous fraction (87.1wt%) amongst the three algae, which comprised of 73...
February 14, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28274159/effect-of-spirulina-platensis-ingestion-on-the-abnormal-biochemical-and-oxidative-stress-parameters-in-the-pancreas-and-liver-of-alloxan-induced-diabetic-rats
#14
Ourida Aissaoui, Malek Amiali, Nora Bouzid, Khaled Belkacemi, Arezki Bitam
CONTEXT: Previous studies have shown that Spirulina platensis Gomont (Phormidiaceae) (SP) extract has beneficial effects on many disease conditions. The putative protective effects of SP were investigated in diabetic rats. OBJECTIVE: The current study investigates the antioxidant effects of SP in diabetic Wistar rats. MATERIALS AND METHODS: Alloxan monohydrate (150 mg/kg body weight) was intraperitoneally administrated to induce diabetes...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28272349/the-influence-of-spirulina-platensis-filtrates-on-caco-2-proliferative-activity-and-expression-of-apoptosis-related-micrornas-and-mrna
#15
Agnieszka Śmieszek, Ewa Giezek, Martyna Chrapiec, Martyna Murat, Aleksandra Mucha, Izabela Michalak, Krzysztof Marycz
Spirulina platensis (SP) is a blue-green microalga that has recently raised attention not only as a nutritional component, but also as a source of bioactivities that have therapeutic effects and may find application in medicine, including cancer treatment. In the present study we determined the cytotoxic effect of S. platensis filtrates (SPF) on human colon cancer cell line Caco-2. Three concentrations of SPF were tested-1.25%, 2.5%, and 5% (v/v). We have found that the highest concentration of SPF exerts the strongest anti-proliferative and pro-apoptotic effect on Caco-2 cultures...
March 7, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28245621/detection-of-cyanotoxins-in-algae-dietary-supplements
#16
Audrey Roy-Lachapelle, Morgan Solliec, Maryse F Bouchard, Sébastien Sauvé
Algae dietary supplements are marketed worldwide as natural health products. Although their proprieties have been claimed as beneficial to improve overall health, there have been several previous reports of contamination by cyanotoxins. These products generally contain non-toxic cyanobacteria, but the methods of cultivation in natural waters without appropriate quality controls allow contamination by toxin producer species present in the natural environment. In this study, we investigated the presence of total microcystins, seven individual microcystins (RR, YR, LR, LA, LY, LW, LF), anatoxin-a, dihydroanatoxin-a, epoxyanatoxin-a, cylindrospermopsin, saxitoxin, and β-methylamino-l-alanine in 18 different commercially available products containing Spirulina or Aphanizomenon flos-aquae...
February 25, 2017: Toxins
https://www.readbyqxmd.com/read/28244267/simultaneous-determination-of-13-carbohydrates-using-high-performance-anion-exchange-chromatography-coupled-with-pulsed-amperometric-detection-and-mass-spectrometry
#17
Dan Zhao, Feng Feng, Fei Yuan, Jin Su, Yan Cheng, Hanqiu Wu, Kun Song, Bo Nie, Lian Yu, Feng Zhang
A simple, accurate, and highly sensitive method was developed for the determination of 13 carbohydrates in polysaccharide of Spirulina platensis based on high-performance anion-exchange chromatography coupled with pulsed amperometric detection and mass spectrometry. Samples were extracted with deionized water using ultrasonic-assisted extraction, and the ultrasound-assisted extraction conditions were optimized by Box-Behnken design. Then the extracted polysaccharide was hydrolyzed by adding 1 mol/L trifluoroacetic acid before determination by high-performance anion-exchange chromatography coupled with pulsed amperometric detection and confirmed by high-performance anion-exchange chromatography coupled with mass spectrometry...
April 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28231149/microalgae-nutraceuticals
#18
REVIEW
Marcello Nicoletti
Among the new entries in the food supplements sector, an important place must be assigned to nutraceuticals containing microalgae, nowadays accounting for a large and rapidly expanding market. The marketed products are mainly based on three production strains, i.e., Spirulina and Chlorella, followed at a distance by Klamath. It is a composite situation, since two of them are cyanobacteria and the second one is eukaryotic. The reality is that each presents similarities in shape and appearance concerning the marketed form and several utilizations, and peculiarities that need special attention and adequate studies...
August 22, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28182098/antioxidant-immunomodulating-and-microbial-modulating-activities-of-the-sustainable-and-ecofriendly-spirulina
#19
REVIEW
Alberto Finamore, Maura Palmery, Sarra Bensehaila, Ilaria Peluso
The highly nutritional and ecofriendly Spirulina (Arthrospira platensis) has hypolipidemic, hypoglycemic, and antihypertensive properties. Spirulina contains functional compounds, such as phenolics, phycocyanins, and polysaccharides, with antioxidant, anti-inflammatory, and immunostimulating effects. Studies conducted on Spirulina suggest that it is safe in healthy subjects, but attitude to eating probably affects the acceptability of Spirulina containing foods. Although the antioxidant effect of Spirulina is confirmed by the intervention studies, the concerted modulation of antioxidant and inflammatory responses, suggested by in vitro and animal studies, requires more confirmation in humans...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28166438/supplementation-of-spirulina-arthrospira-platensis-improves-lifespan-and-locomotor-activity-in-paraquat-sensitive-dj-1%C3%AE-%C3%AE-93-flies-a-parkinson-s-disease-model-in-drosophila-melanogaster
#20
Ajay Kumar, Pearl K Christian, Komal Panchal, B R Guruprasad, Anand K Tiwari
Spirulina (Arthrospira platensis) is a cyanobacterium (blue-green alga) consumed by humans and other animals because of its nutritional values and pharmacological properties. Apart from high protein contents, it also contains high levels of antioxidant and anti-inflammatory compounds, such as carotenoids, β-carotene, phycocyanin, and phycocyanobilin, indicating its possible pharmaco-therapeutic utility. In the present study using DJ-1β(Δ93) flies, a Parkinson's disease model in Drosophila, we have demonstrated the therapeutic effect of spirulina and its active component C-phycocyanin (C-PC) in the improvement of lifespan and locomotor behavior...
September 3, 2017: Journal of Dietary Supplements
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