A macromolecular Gd(III) complex as pH-responsive relaxometric probe for MRI applications

被引:81
作者
Aime, S
Botta, M
Crich, SG
Giovenzana, G
Palmisano, G
Sisti, M
机构
[1] Univ Turin, Dipartimento Chim IFM, I-10125 Turin, Italy
[2] Univ Piemonte Orientale Amedeo Avogadro, Dipartimento Sci & Tecnol Avanzate, I-15100 Alessandria, Italy
[3] Univ Milan, Dipartimento Chim Organ & Ind, I-20133 Milan, Italy
[4] Univ Piemonte Orientale, Dipartimento Sci Med, I-28100 Novara, Italy
[5] Univ Insubria, Dipartimento Sci CC FF MM, I-22100 Como, Italy
关键词
D O I
10.1039/a900499h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The ability of the paramagnetic macromolecular complex (GdDO3ASQ)(30)-Orn(114) to enhance the water proton relaxation rate has been found to be a function of pH; this behaviour is related to the structural changes occurring in the polypeptide upon protonation of the side-chain NH(2) groups.
引用
收藏
页码:1577 / 1578
页数:2
相关论文
共 13 条
[1]   Novel paramagnetic macromolecular complexes derived from the linkage of a macrocyclic Gd(III) complex to polyamino acids through a squaric acid moiety [J].
Aime, S ;
Botta, M ;
Crich, SG ;
Giovenzana, G ;
Palmisano, G ;
Sisti, M .
BIOCONJUGATE CHEMISTRY, 1999, 10 (02) :192-199
[2]  
AIME S, 1997, CHEM SOC REV, V26, P1
[3]   Measurement of intratumor pH by pH indicator used in F-19-magnetic resonance spectroscopy - Measurement of extracellular pH decrease caused by hyperthermia combined with hydralazine [J].
Aoki, Y ;
Akagi, K ;
Tanaka, Y ;
Kawai, J ;
Takahashi, M .
INVESTIGATIVE RADIOLOGY, 1996, 31 (11) :680-689
[4]   P-31-MRS MEASUREMENTS OF EXTRACELLULAR PH OF TUMORS USING 3-AMINOPROPYLPHOSPHONATE [J].
GILLIES, RJ ;
LIU, Z ;
BHUJWALLA, Z .
AMERICAN JOURNAL OF PHYSIOLOGY, 1994, 267 (01) :C195-C203
[5]   Relaxometric and luminescence behaviour of triaquahexaazamacrocyclic complexes, the gadolinium complex displaying a high relaxivity with a pronounced pH dependence [J].
Hall, J ;
Haner, R ;
Aime, S ;
Botta, M ;
Faulkner, S ;
Parker, D ;
de Sousa, AS .
NEW JOURNAL OF CHEMISTRY, 1998, 22 (06) :627-631
[6]   FIELD-CYCLING RELAXOMETRY OF PROTEIN SOLUTIONS AND TISSUE - IMPLICATIONS FOR MRI [J].
KOENIG, SH ;
BROWN, RD .
PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY, 1990, 22 :487-567
[7]   PARAMAGNETIC METAL-COMPLEXES AS WATER PROTON RELAXATION AGENTS FOR NMR IMAGING - THEORY AND DESIGN [J].
LAUFFER, RB .
CHEMICAL REVIEWS, 1987, 87 (05) :901-927
[8]   POTENTIATION OF SOLID TUMOR CHEMOTHERAPY BY METABOLIC ALTERATION [J].
MEYER, JA .
ANNALS OF SURGERY, 1974, 179 (01) :88-93
[9]   Getting excited about lanthanide complexation chemistry [J].
Parker, D ;
Williams, JAG .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1996, (18) :3613-3628
[10]   Lanthanide induced shifts and relaxation rate enhancements [J].
Peters, JA ;
Huskens, J ;
Raber, DJ .
PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY, 1996, 28 :283-350