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83 Newest Publications about the topic ion exchangers

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Separation of carnitine and acylcarnitines in biological samples: a review

23-Aug-2013 | Fotouh R. Mansour, Wenjun Wei, Neil D. Danielson, Biomedical Chromatography, 2013

ABSTRACT Carnitine and its acylesters are a family of compounds that can be used in the early diagnosis of many diseases. Carnitine and acylcarnitines have a crucial role in fatty acid transportation. The increased level of free carnitine, total carnitine, or the acylesters can act as ...

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Marine Drugs, Vol. 11, Pages 1800-1814: A New Antiproliferative and Antioxidant Peptide Isolated from Arca subcrenata

24-May-2013 | Chen, Lili ; Song, Liyan ; Li, Tingfei ; Zhu, Jianhua ; Xu, Jian ; Zheng, Qin ; Yu, Rongmin, Marine Drugs, 2013

A new antitumor and antioxidant peptide (H3) was isolated from Arca subcrenata Lischke using ion exchange and hydrophobic column chromatography. The purity of H3 was over 99.3% in reversed phase-high performance liquid chromatography (RP-HPLC) and the molecular weight was determined to be ...

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Ultradepletion of Human Plasma using Chicken Antibodies: A Proof of Concept Study

16-May-2013 | Sock-Hwee Tan; Abidali Mohamedali; Amit Kapur; Mark S. Baker, Journal of Proteome Research, 2013

Human plasma arguably represents the most comprehensive version of the human proteome. Despite its immense theoretical discovery potential, plasma has many high and medium abundance proteins that mask low abundance protein disease biomarkers of relevance, making the discovery of novel diagnostic ...

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Separation, antitumor activities, and encapsulation of polypeptide from Chlorella pyrenoidosa

18-Apr-2013 | Xiaoqin Wang, Xuewu Zhang, Biotechnology Progress, 2013

Chlorella pyrenoidosa is a unicellular green algae and has been a popular foodstuff worldwide. However, no reports on the antitumor peptides from such a microalgae are available in the literature. In this study, using low‐temperature high‐pressure extraction, enzymatic hydrolysis, ion exchange, ...

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Surface Engineering of Ultrafine Cellulose Nanofibrils toward Polymer Nanocomposite Materials

12-Apr-2013 | Shuji Fujisawa; Tsuguyuki Saito; Satoshi Kimura; Tadahisa Iwata; Akira Isogai, Biomacromolecules, 2013

Surface grafting of crystalline and ultrafine cellulose nanofibrils with poly(ethylene glycol) (PEG) chains via ionic bonds was achieved by a simple ion-exchange treatment. The PEG-grafted cellulose nanofibrils exhibited nanodispersibility in organic solvents such as chloroform, toluene, and ...

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Synthesis, Characterization and Photocatalytic Activity of KAl0.33W1.67O6 and Sn0.5Al0.33W1.67O6xH2O

09-Apr-2013 | G. Ravi, Naveen Kumar Veldurthi, Suresh Palla, Radha Velchuri, Someshwar Pola, J.R. Reddy, M. Vithal, Photochemistry and Photobiology, 2013

Abstract Nano sized defect pyrochlore, KAl0.33W1.67O6 (KAW), is prepared through sol‐gel method. Divalent tin doped KAl0.33W1.67O6 is obtained at room temperature by ion exchange method using acidified SnCl2 and parent KAl0.33W1.67O6. These materials are characterized by powder X‐Ray ...

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Separation, antitumor activities and encapsulation of polypeptide from Chlorella pyrenoidosa

13-Mar-2013 | Xiaoqin Wang, Xuewu Zhang, Biotechnology Progress, 2013

Abstract Chlorella pyrenoidosa is an unicellular green algae and has been a popular foodstuff worldwide. However, no reports on the antitumor peptides from such a microalgae are available in the literature. In this study, using low‐temperature high‐pressure extraction, enzymatic hydrolysis, ...

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Regulation of the Na+/H+ Exchanger (NHE1) in Breast Cancer Metastasis

15-Feb-2013 | Schammim R. Amith; Larry Fliegel, Cancer Research, 2013

The pH gradient in normal cells is tightly controlled by the activity of various pH-regulatory membrane proteins including the isoform protein of the Na+/H+ exchanger (NHE1). NHE1 is constitutively active in a neoplastic microenvironment, dysregulating pH homeostasis and altering the survival, ...

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Chromosomal and Plasmid-Encoded Factors of Shigella flexneri Induce Secretogenic Activity Ex Vivo

16-Nov-2012 | Christina Faherty et al., PLoS ONE, 2012

by Christina Faherty, Jill M. Harper, Terez Shea-Donohue, Eileen M. Barry, James B. Kaper, Alessio Fasano, James P. Nataro Shigella flexneri is a Gram-negative, facultative intracellular pathogen that causes millions of cases of watery or bloody diarrhea annually, resulting in ...

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On‐target and nanoparticle‐facilitated selective enrichment of peptides and proteins for analysis by MALDI‐MS

02-Nov-2012 | Mark L. Stolowitz, PROTEOMICS, 2012

Over the course of the last decade, a number of investigators have come to appreciate that the surface of a MALDI target, after suitable modification, can be used for selective enrichment of peptides and proteins. More recently, surface‐modified nanoparticles that readily co‐crystallize in MALDI ...

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