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Theincreasinguseofrareearthsinagriculture,industriesandmedicinesmaycausethehuman′sfoodcyclepolutedbyrareearths,whichconcernsa...  相似文献   
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High resolution1Hmagicanglespinning(MAS)NMRspectroscopyisincreasinglybeingusedasause fultechniqueforinvestigatingthemetabolicstateof variousintacttissuesintheareasofdrugtoxicity[1,2]anddiseasediagnosis[3,4].Biologicaltissuesaresemi solidheterogeneouscomplexcontainingspecieswitha widerangeofmolecularweightssuchasproteins,lip ids,andlow molecularweightmetabolites[5].1HNMR spectraoftissuesufferfrommajorline broadeningcon tributionswhenacquiredbyconventionalsolution state NMRspectroscopybecau…  相似文献   
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Thedevelopmentofhigh fieldNMRspectrome terswithincreasedsensitivity,resolution,dynamic rangeandimprovedcomputingcapabilitieshasmade itpossibletouseNMRtechniqueforrapidmulticom ponentanalysisoflowMWcompoundsinbiofluids inordertoassessthetoxicologicaleffe…  相似文献   
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The biochemical effects of gadolinium chloride were studied using high-resolution IH nuclear magnetic resonance (NMR) spec-troscopy to investigate the biochemical composition of tissue (liver and kidney) aqueous extracts obtained from control and gadolinium chlo-ride (GdCl3) (10 and 50 mg/kg body weight, intraperitoneal injection, i.p.) treated rats. Tissue samples were collected at 48, 96 and 168 h p.d. after exposure to GdCl3, and extracted using methanol/chloroform solvent system. 1H NMR spectra of tissue extracts were analyzed by pat-tern recognition using principal components analysis. The liver damages caused by GdCl3 were characterized by increased succinate and de-creased glycogen level and elevated lactate, alanine and betaine concentration in liver. Furthermore, the increase of creatine and lactate, and decrease of glutamate, alanine, phosphocholine, glycophosphocholine (GPC), betaine, myo-inositoi and trimethylamine N-oxide (TMAO)levels in kidney illustrated kidney disturbance induced by GdCl3.  相似文献   
5.
NMRspectroscopyofbiofluidhasbroughtnew chemistryintolifescienceandclinicalmedicine,and NMRspectroscopy basedapproachhasbeensuccess fullyappliedtothestudiesofbiochemicaleffectsand inborndiseaseswiththeadventofhighfieldNMR spectrometers[1].Inrecentyears,highresolutionNMRhasbeenusedtotherapidmulticomponentanal ysisoflowmolecularweightcompoundsinbiofluid,includingurine,bile,cerebrospinalfluid,saliva,milkandsynovialfluidforclinicaldiagnosisofinborn diseasesandinvestigationofbiochemicaleffectsof…  相似文献   
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