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Showing 25 to 36 of 150 entries
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Molecular weight determination of a newly synthesized guanidinylated disulfide-containing poly(amido amine) by gel permeation chromatography.

Asian journal of pharmaceutical sciences

Xing H, Lu M, Xian L, Zhang J, Yang T, Yang L, Ding P.
PMID: 32104341
Asian J Pharm Sci. 2017 May;12(3):292-298. doi: 10.1016/j.ajps.2016.11.001. Epub 2016 Nov 18.

A cationic gene delivery vector, guanidinylated disulfide-containing poly(amido amine) (CAR-CBA), was synthesized by Michael addition reaction between N,N'-cystaminebisacrylamide (CBA) and guanidine hydrochloride (CAR). Gel permeation chromatography (GPC) was used to evaluate the molecular weight of synthesized CAR-CBA. Polyethyleneimine (PEI)...

Correlation of Morphology and In-Vitro Degradation Behavior of Spray Pyrolyzed Bioactive Glasses.

Materials (Basel, Switzerland)

Bakare FF, Chou YJ, Huang YH, Tesfay AH, Moriga T, Shih SJ.
PMID: 31717605
Materials (Basel). 2019 Nov 09;12(22). doi: 10.3390/ma12223703.

Bioactive glass (BG) is considered to be one of the most remarkable materials in the field of bone tissue regeneration due to its superior bioactivity. In this study, both un-treated and polyethylene glycols (PEG)-treated BG particles were prepared using...

Inhibition of cryoaggregation of phospholipid liposomes by an Arabidopsis intrinsically disordered dehydrin and its K-segment.

Colloids and surfaces. B, Biointerfaces

Kimura Y, Ohkubo T, Shimizu K, Magata Y, Park EY, Hara M.
PMID: 34929484
Colloids Surf B Biointerfaces. 2021 Dec 15;211:112286. doi: 10.1016/j.colsurfb.2021.112286. Epub 2021 Dec 15.

Dehydrin is an intrinsically disordered protein involved in the cold tolerance of plants. Although dehydrins have been thought to protect biomembranes under cold conditions, the underlying protective mechanism has not been confirmed. Here we report that Arabidopsis dehydrin AtHIRD11...

Metal-Organic Frameworks for Practical Separation of Cyclic and Linear Polymers.

Angewandte Chemie (International ed. in English)

Sawayama T, Wang Y, Watanabe T, Takayanagi M, Yamamoto T, Hosono N, Uemura T.
PMID: 33733567
Angew Chem Int Ed Engl. 2021 May 17;60(21):11830-11834. doi: 10.1002/anie.202102794. Epub 2021 Apr 15.

The purification step in the manufacturing of cyclic polymers is difficult as complete fractionation to eliminate linear impurities requires considerable effort. Here, we report a new polymer separation methodology that uses metal-organic frameworks (MOFs) to discriminate between linear and...

Anaphylactic shock caused by ingestion of polyethylene glycol.

Intestinal research

Lee SH, Cha JM, Lee JI, Joo KR, Shin HP, Baek IH, Jeon JW, Lim JU, Lee JL, Lee HM, Cho YH.
PMID: 25691849
Intest Res. 2015 Jan;13(1):90-4. doi: 10.5217/ir.2015.13.1.90. Epub 2015 Jan 29.

Colonoscopy is the current standard method for evaluation of the colon. The diagnostic accuracy and therapeutic safety of colonoscopy depend on the quality of colonic cleansing and preparation. Generally, all these preparations have been demonstrated to be safe for...

Analysis of some commercial polysorbate formulations using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.

Rapid communications in mass spectrometry : RCM

Ayorinde FO, Gelain SV, Johnson JH, Wan LW.
PMID: 11114018
Rapid Commun Mass Spectrom. 2000;14(22):2116-24. doi: 10.1002/1097-0231(20001130)14:22<2116::AID-RCM142>3.0.CO;2-1.

Analyses of polysorbate formulations (Tween 20, Tween 40, Tween 60, and Tween 80) by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) reveal a complex mixture of oligomers that include polyethylene glycols, polyethylene glycol esters, isosorbide polyethoxylates, sorbitan polyethoxylates, polysorbate...

Probing Polyethylene Glycol-Phospholipid Membrane Interactions Using Enzymes.

Journal of colloid and interface science

Vijayalakshmi A, KrishnaKumari V, Madhusudhana Rao N.
PMID: 10527587
J Colloid Interface Sci. 1999 Nov 01;219(1):190-194. doi: 10.1006/jcis.1999.6471.

Interaction of polyethylene glycols (PEGs) with phospholipid membranes leads to aggregation and fusion of membranes. The structural basis of these events in membranes, especially in contact with low-molecular-weight PEGs, is uncertain. Using phsopholipases, a class of interfacially active enzymes,...

Hydrophilicity of Polar and Apolar Domains of Amphiphiles.

Journal of colloid and interface science

Yu H, Narusawa H, Itoh K, Oshi A, Yoshino N, Ohbu K, Shirakawa T, Fukada K, Fujii M, Kato T, Seimiya T.
PMID: 10985816
J Colloid Interface Sci. 2000 Sep 15;229(2):375-390. doi: 10.1006/jcis.2000.7032.

The hydrophilicity of polar and apolar domains of various amphiphiles was systematically estimated for their homologues and analogues by measuring the molar adiabatic compressibility of an aqueous solution at infinite dilution. The homologues of protic alkyl H(CH(2))(n)-, perfluoroalkyl F(CF(2))(n)-,...

Mannich Reaction as a Key Strategy for the Synthesis of Benzoazacrown Ethers and Benzocryptands.

The Journal of organic chemistry

Pastushok VN, Bradshaw JS, Bordunov AV, Izatt RM.
PMID: 11667583
J Org Chem. 1996 Oct 04;61(20):6888-6892. doi: 10.1021/jo9607931.

A convenient method for the synthesis of mono- and polycyclic azacrown macrocycles containing aromatic fragments using the Mannich condensation of phenols and secondary diamines has been studied. This new approach allowed the synthesis of bisphenols connected by oligoazaoxaalkane units...

Matrix-assisted laser desorption/ionization, fast atom bombardment and plasma desorption mass spectrometry of polyethylene glycol esters of (2-benzothiazolon-3-yl)acetic acid.

Journal of mass spectrometry : JMS

Mincheva Z, Hadjieva P, Kalcheva V, Seraglia R, Traldi P, Przybylski M.
PMID: 11433535
J Mass Spectrom. 2001 Jun;36(6):626-32. doi: 10.1002/jms.162.

Fast atom bombardment (FAB), matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) and plasma desorption (PD) mass spectra of newly synthesized polyethylene glycols (PEGs), (M(w) 600-4000 Da) chemically modified with biologically active (2-benzothiazolon-3-yl)acetyl end-groups are described (products 1-6). The spectra were also...

Synthesis by High-Efficiency Liquid-Phase (HELP) Method of Oligonucleotides Conjugated with High-Molecular Weight Polyethylene Glycols (PEGs).

Biological procedures online

Bonora GM, Zaramella S, Veronese FM.
PMID: 12734594
Biol Proced Online. 1998 May 14;1:59-69. doi: 10.1251/bpo2.

The chemical modification of synthetic oligonucleotides has recently been investigated to improve their pharmacological utilization. In addition to chemical alterations of the backbone and of the heterocyclic bases, their conjugation with amphiphylic moieties, such as the polyethylene glycol has...

Extended Solution Gate OFET-based Biosensor for Label-free Glial Fibrillary Acidic Protein Detection with Polyethylene Glycol-Containing Bioreceptor Layer.

Advanced functional materials

Song J, Dailey J, Li H, Jang HJ, Zhang P, Wang JT, Everett AD, Katz HE.
PMID: 29606930
Adv Funct Mater. 2017 May 25;27(20). doi: 10.1002/adfm.201606506. Epub 2017 Mar 23.

A novel organic field effect transistor (OFET) -based biosensor is described for label-free glial fibrillary acidic protein (GFAP) detection. We report the first use of an extended solution gate structure where the sensing area and the organic semiconductor are...

Showing 25 to 36 of 150 entries