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DHA transporter

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https://www.readbyqxmd.com/read/28620184/transcriptomic-analysis-of-the-regulation-of-lipid-fraction-migration-and-fatty-acid-biosynthesis-in-schizochytrium-sp
#1
Lujing Ren, Xuechao Hu, Xiaoyan Zhao, Shenglan Chen, Yi Wu, Dan Li, Yadong Yu, Lingjun Geng, Xiaojun Ji, He Huang
Schizochytrium sp. is the main source of docosahexaenoic acid-rich oil, which is widely used in food additive and pharmaceutical industry. In this study, using RNA-seq, comparative transcriptomic analyses were performed at four stages of DHA fermentation by Schizochytrium sp to get potential genes related to cell transition from cell growth to lipid accumulation and then to lipid turnover. 1406, 385, 1384 differently expressed genes were identified by comparisons in pairs of S2 vs S1, S3 vs S2 and S4 vs S3...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28484682/vitamin-c-transporters-in-cancer-current-understanding-and-gaps-in-knowledge
#2
REVIEW
Christina Wohlrab, Elisabeth Phillips, Gabi U Dachs
Sufficient uptake and whole body distribution of vitamin C (ascorbate) is essential for many biochemical processes, including some that are vital for tumor growth and spread. Uptake of ascorbate into cancer cells is modulated by availability, tumor blood flow, tissue diffusion parameters, and ascorbate transport proteins. Uptake into cells is mediated by two families of transport proteins, namely, the solute carrier gene family 23, consisting of sodium-dependent vitamin C transporters (SVCTs) 1 and 2, and the SLC2 family of glucose transporters (GLUTs)...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28427288/cigarette-smokers-develop-altered-erythrocyte-membrane-composition-an-investigation-unmasking-the-role-of-membrane-bound-integral-protein-glut-1
#3
Jyotirmoy Sikdar, Paromita Seal, Amartya Roy, Rajen Haldar
Erythrocytes in cigarette smokers are prone to oxidative damage. Here, we sought to elucidate the facts behind modifications and possible defense system developed in erythrocyte of cigarette smokers. We observed significant increase in stomatocytes and spherocytes, and osmotic fragility of erythrocyte, along with reduced level of protein thiol and increased fluorescence anisotropy in isolated membrane. Denaturing gel electrophoresis indicated alterations in band 3, band 4.2 and band 4.5. Among those, Glut 1 (i...
May 10, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28423959/diabetic-pregnancy-maternal-and-fetal-docosahexaenoic-acid-a-review-of-existing-evidence
#4
Pauline Léveillé, Clémence Rouxel, Mélanie Plourde
OBJECTIVE: Docosahexaenoic acid (DHA) is vital for fetal development especially during the third trimester of gestation when the speed of fetal brain growth is at its peak. Diabetes modifies the maternal fatty acid profile, which may in turn change the quantity and/or quality of lipids transferred to the fetus. Neonates born to diabetic mothers might be more vulnerable to DHA deficiency leading to lower cognitive scores together with lower overall intellectual quotients when compared to control...
April 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28380057/specific-behavioral-and-cellular-adaptations-induced-by-chronic-morphine-are-reduced-by-dietary-omega-3-polyunsaturated-fatty-acids
#5
Joshua Hakimian, Ani Minasyan, Lily Zhe-Ying, Mariana Loureiro, Austin Beltrand, Camille Johnston, Alexander Vorperian, Nicole Romaneschi, Waleed Atallah, Fernando Gomez-Pinilla, Wendy Walwyn
Opiates, one of the oldest known drugs, are the benchmark for treating pain. Regular opioid exposure also induces euphoria making these compounds addictive and often misused, as shown by the current epidemic of opioid abuse and overdose mortalities. In addition to the effect of opioids on their cognate receptors and signaling cascades, these compounds also induce multiple adaptations at cellular and behavioral levels. As omega-3 polyunsaturated fatty acids (n-3 PUFAs) play a ubiquitous role in behavioral and cellular processes, we proposed that supplemental n-3 PUFAs, enriched in docosahexanoic acid (DHA), could offset these adaptations following chronic opioid exposure...
2017: PloS One
https://www.readbyqxmd.com/read/28377317/dehydroascorbate-derivatized-chitosan-particles-for-targeting-antimalarial-agents-to-infected-erythrocytes
#6
Hasham Shafi, D V Siva Reddy, Tabassum Khan, Rajeev Ranjan, Ashish Srivastava, Suniti Vaishya, Tanuj Sharma, Mohammad Imran Siddiqui, Saman Habib, Amit Misra
The mammalian glucose transporter GLUT-1 and Plasmodium falciparum hexose transporter PfHT1 are overexpressed on human RBC infected with the parasite (iRBC), presumably for enhanced glucose uptake. Dehydroascorbic acid (DHA) competes out glucose in GLUT-1 binding. We prepared particles containing chloroquine phosphate using novel derivatives of chitosan (CSN). CSN was either pre-derivatized with DHA (PRE) or particles made of CSN were derivatized by surface-grafting DHA (POST). The optimized formulations were analyzed for size (170-200nm) drug content (about 40%) entrapment efficiency (50-57%), in vitro drug release (80% in 72h, Higuchi's model), hemolysis on exposure to whole blood or RBC at 5% hematocrit, cytotoxicity towards cultured HEK 293T (kidney) and HepG2 (hepatic) cells, targeting iRBC and in vitro efficacy against P...
April 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28272345/polyunsaturated%C3%A2-fatty%C3%A2-acid%C3%A2-levels%C3%A2-in%C3%A2-maternal%C3%A2-erythrocytes%C3%A2-of%C3%A2-japanese%C3%A2-women%C3%A2-during%C3%A2-pregnancy%C3%A2-and%C3%A2-after%C3%A2-childbirth
#7
Terue Kawabata, Yasuo Kagawa, Fumiko Kimura, Teruo Miyazawa, Shoji Saito, Takahiro Arima, Kunihiko Nakai, Nobuo Yaegashi
BACKGROUND: The transport of polyunsaturated fatty acids (PUFAs), such as arachidonic acid (ARA, 20:4n-6) and docosahexaenoic acid (DHA, 22:6n-3), to the fetus from maternal stores increases depending on the fetal requirements for PUFA during the last trimester of pregnancy. Therefore, maternal blood PUFA changes physiologically with gestational age. However, the changes in PUFA levels in maternal blood erythrocytes during pregnancy and after childbirth have not been fully investigated in a fish-eating population...
March 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28156175/docosahexaenoic-acid-mediated-targeted-and-sustained-brain-delivery-of-curcumin-microemulsion
#8
Rajshree L Shinde, Padma V Devarajan
We disclose microemulsions (ME) of curcumin (CUR) with docosahexaenoic acid (DHA)-rich oil (CUR DHA ME) for targeted delivery to the brain. MEs of CUR (5 mg/mL) with and without DHA-rich oil (CUR Capmul ME) suitable for intravenous and intranasal administration exhibited negative zeta potential, globule size  <20 nm and good stability. Following intravenous delivery MEs exhibited high brain concentration with CUR DHA ME exhibiting a 2.8-fold higher Cmax than CUR solution. Furthermore, high and sustained concentration was demonstrated even at 24 h, which was 8- and 2-fold higher than CUR solution and CUR Capmul ME, respectively...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28035674/the-blood-brain-barrier-fatty-acid-transport-protein-1-fatp1-slc27a1-supplies-docosahexaenoic-acid-to-the-brain-and-insulin-facilitates-transport
#9
Yusuke Ochiai, Yasuo Uchida, Sumio Ohtsuki, Masanori Tachikawa, Sanshiro Aizawa, Tetsuya Terasaki
We purposed to clarify the contribution of fatty acid transport protein 1 (FATP1/SLC 27A1) to the supply of docosahexaenoic acid (DHA) to the brain across the blood-brain barrier in this study. Transport experiments showed that the uptake rate of [(14) C]-DHA in human FATP1-expressing HEK293 cells was significantly greater than that in empty vector-transfected (mock) HEK293 cells. The steady-state intracellular DHA concentration was nearly 2-fold smaller in FATP1-expressing than in mock cells, suggesting that FATP1 works as not only an influx, but also an efflux transporter for DHA...
May 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28012930/ascorbic-acid-but-not-dehydroascorbic-acid-increases-intracellular-vitamin-c-content-to-decrease-hypoxia-inducible-factor-1-alpha-activity-and-reduce-malignant-potential-in-human-melanoma
#10
Adam P Fischer, Sarah L Miles
INTRODUCTION: Accumulation of hypoxia inducible factor-1 alpha (HIF-1α) in malignant tissue is known to contribute to oncogenic progression and is inversely associated with patient survival. Ascorbic acid (AA) depletion in malignant tissue may contribute to aberrant normoxic activity of HIF-1α. While AA supplementation has been shown to attenuate HIF-1α function in malignant melanoma, the use of dehydroascorbic acid (DHA) as a therapeutic means to increase intracellular AA and modulate HIF-1α function is yet to be evaluated...
February 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27938626/prepartum-maternal-diets-supplemented-with-oilseeds-alter-the-fatty-acid-profile-in-bovine-neonatal-plasma-possibly-through-reduced-placental-expression-of-fatty-acid-transporter-protein-4-and-fatty-acid-translocase
#11
Reza Salehi, Divakar J Ambrose
In the present study, we determined the effects of maternal dietary fat and the type of fat on plasma fatty acids and the expression of placental fatty acid transporter genes. In Experiment 1, Holstein cows in the last 35 days of gestation received diets containing sunflower seed (n=8; high in linoleic acid (LA)), canola seed (n=7; high in oleic acid (OLA)) or no oilseed (n=7; control). Fatty acids were quantified in dam and neonate plasma at calving. In Experiment 2, placental cotyledons were collected (LA: n=4; OLA: n=4; control: n=5) to quantify gene expression...
December 12, 2016: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/27886534/differences-in-the-response-of-soil-dehydrogenase-activity-to-cd-contamination-are-determined-by-the-different-substrates-used-for-its-determination
#12
Xiangping Tan, Yanju Liu, Kaihong Yan, Ziquan Wang, Guannan Lu, Yike He, Wenxiang He
Dehydrogenase activity (DHA) is an important indicator of heavy metal toxicity in contaminated soils. Different instances of DHA were determined using various substrates and which could affect the description of heavy metal toxicity. Currently, too few investigations have been done on selecting appropriate substrates. This study employed indoor simulation to determine soil DHA and its response to external cadmium (Cd) using two substrates (TTC and INT). Hormesis for DHA obtained using the TTC method (DHA-TTC) in low Cd concentration was observed which was quickly inhibited in high Cd concentration...
February 2017: Chemosphere
https://www.readbyqxmd.com/read/27864326/both-maternal-and-offspring-elovl2-genotypes-determine-systemic-dha-levels-in-perinatal-mice
#13
Anna M Pauter, Sofia Trattner, Amanda Gonzalez-Bengtsson, Emanuela Talamonti, Abolfazl Asadi, Olga Dethlefsen, Anders Jacobsson
The molecular details relevant to dietary supplementation of the omega-3 fatty acid DHA in mothers as well as in their offspring are not clear. The PUFA elongase, elongation of very long-chain fatty acid (ELOVL)2, is a critical enzyme in the formation of DHA in mammals. In order to address the question regarding the origin of DHA during perinatal life, we have used DHA-deficient Elovl2-ablated mice as a model system to analyze the maternal impact on the DHA level in their offspring of various genotypes. Elovl2(-/-) mothers maintained on control diet had significantly lower systemic levels of DHA compared with the Elovl2(+/-) and Elovl2(+/+) mothers...
January 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/27852782/fatty-acid-binding-protein-5-at-the-blood-brain-barrier-regulates-endogenous-brain-docosahexaenoic-acid-levels-and-cognitive-function
#14
Yijun Pan, Jennifer L Short, Kwok H C Choy, Annie X Zeng, Philip J Marriott, Yuji Owada, Martin J Scanlon, Christopher J H Porter, Joseph A Nicolazzo
Fatty acid-binding protein 5 (FABP5) at the blood-brain barrier contributes to the brain uptake of docosahexaenoic acid (DHA), a blood-derived polyunsaturated fatty acid essential for maintenance of cognitive function. Given the importance of DHA in cognition, the aim of this study was to investigate whether deletion of FABP5 results in cognitive dysfunction and whether this is associated with reduced brain endothelial cell uptake of exogenous DHA and subsequent attenuation in the brain levels of endogenous DHA...
November 16, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27825801/targeting-autophagy-augments-the-activity-of-dha-e3-to-overcome-p-gp-mediated-multi-drug-resistance
#15
Guangmin Xi, Ming Wang, Bing Sun, Abdul Sami Shaikh, Yongqing Liu, Wei Wang, Hongxiang Lou, Huiqing Yuan
Multidrug resistance (MDR) is a major obstacle for successful chemotherapy treatment. Searching for effective MDR modulators and combining them with anticancer drug therapies has been a promising strategy against clinical MDR. In our previous study, we have found that DHA-E3, a synthetic derivative of DHA, has the ability to modulate the function of P-glycoprotein (P-gp) and reverse MDR in cancer cells. In this study, we further evaluated the reversal effect of DHA-E3 on MDR and explored its mechanism of action in vitro...
December 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27796616/human-milk-fatty-acid-composition-comparison-of-novel-dried-milk-spot-versus-standard-liquid-extraction-methods
#16
Michael C Rudolph, Bridget E Young, Kristina Harris Jackson, Nancy F Krebs, William S Harris, Paul S MacLean
Accurate assessment of the long chain polyunsaturated fatty acid (LC-PUFA) content of human milk (HM) provides a powerful means to evaluate the FA nutrient status of breastfed infants. The conventional standard for FA composition analysis of HM is liquid extraction, trans-methylation, and analyte detection resolved by gas chromatography. This standard approach requires fresh or frozen samples, storage in deep freeze, organic solvents, and specialized equipment in processing and analysis. Further, HM collection is often impractical for many studies in the free living environment, particularly for studies in developing countries...
December 2016: Journal of Mammary Gland Biology and Neoplasia
https://www.readbyqxmd.com/read/27571688/docosahexaenoic-acid-triglyceride-based-microemulsions-with-an-added-dendrimer-structural-considerations
#17
Nina Lidich, M Francesca Ottaviani, Roy E Hoffman, Abraham Aserin, Nissim Garti
Omega fatty acids, mainly the triglyceride of docosahexaenoic acid (TG-DHA), are considered important nutraceuticals. These compounds are water-insoluble and their transport across membranes depends on their carriers. Dendrimers are known as drug carriers across cell membranes and also as permeation enhancers. The solubilization of TG-DHA and dendrimer into a microemulsion (ME) system serving as a carrier could be used for a targeted delivery in the future. The interactions between TG-DHA and second generation poly(propyleneimine) dendrimers (PPI-G2) and their effect on structural transitions of ME were explored along the water dilution line using electron paramagnetic resonance and pulsed-gradient spin-echo NMR along with other analytical techniques...
December 1, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27553883/metabolic-engineering-of-corynebacterium-glutamicum-for-shikimate-overproduction-by-growth-arrested-cell-reaction
#18
Takahisa Kogure, Takeshi Kubota, Masako Suda, Kazumi Hiraga, Masayuki Inui
Corynebacterium glutamicum with the ability to simultaneously utilize glucose/pentose mixed sugars was metabolically engineered to overproduce shikimate, a valuable hydroaromatic compound used as a starting material for the synthesis of the anti-influenza drug oseltamivir. To achieve this, the shikimate kinase and other potential metabolic activities for the consumption of shikimate and its precursor dehydroshikimate were inactivated. Carbon flux toward shikimate synthesis was enhanced by overexpression of genes for the shikimate pathway and the non-oxidative pentose phosphate pathway...
August 20, 2016: Metabolic Engineering
https://www.readbyqxmd.com/read/27514858/genomic-analysis-of-genes-involved-in-the-biosynthesis-of-very-long-chain-polyunsaturated-fatty-acids-in-thraustochytrium-sp-26185
#19
Xianming Zhao, Meesapyodsuk Dauenpen, Cunmin Qu, Xiao Qiu
Thraustochytrium sp. 26185 is a marine protist that can produce a large amount of docosahexaenoic acid (DHA, 22:6n-3), an ω3 very long chain polyunsaturated fatty acid (VLCPUFA) of nutritional importance. However, the mechanism of how this fatty acid is synthesized and assembled into the storage lipid triacylglycerol is unclear. Here we report sequencing of the whole genome and genomic analysis of genes involved in the biosynthesis and assembly of the fatty acids in this species. Genome sequencing produced a total of 2,418,734,139 bp clean sequences with about 62 fold genome coverage...
September 2016: Lipids
https://www.readbyqxmd.com/read/27496085/mechanisms-of-dha-transport-to-the-brain-and-potential-therapy-to-neurodegenerative-diseases
#20
REVIEW
Amanda Lo Van, Nobuyuki Sakayori, Mayssa Hachem, Mounir Belkouch, Madeleine Picq, Michel Lagarde, Noriko Osumi, Nathalie Bernoud-Hubac
Docosahexaenoic acid (DHA; 22:6 ω-3) is highly enriched in the brain and is required for proper brain development and function. Its deficiency has been shown to be linked with the emergence of neurological diseases. Dietary ω-3 fatty acid supplements including DHA have been suggested to improve neuronal development and enhance cognitive functions. However, mechanisms of DHA incorporation in the brain remain to be fully understood. Findings suggested that DHA is better incorporated when esterified within lysophospholipid rather than under its non-esterified form...
November 2016: Biochimie
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