0000000000415117

AUTHOR

Christina Dunster

showing 4 related works from this author

Gender- and age-related distinctions for the in vivo prooxidant state in Fanconi anaemia patients.

2004

Abstract Some selected oxidative stress parameters were measured in 56 Fanconi anaemia (FA) patients (42 untransplanted and 14 transplanted), 54 FA heterozygotes (parents) and 173 controls. Untransplanted FA patients showed a highly significant increase in leukocyte 8-hydroxy-2’-deoxyguanosine (8-OHdG) (p = 0.00003) and a borderline increase (p = 0.076) in urinary levels of 8-OHdG vs. child controls. These increases were more pronounced in female FA patients (p = 0.00005 for leukocyte 8-OHdG, and p = 0.021 for urinary 8-OHdG). Female FA patients also displayed a highly significant excess of spontaneous chromosomal breaks vs. male patients (p = 0.00026), in the same female:male ratio (≅ 1.4)…

MaleCancer Researchmedicine.medical_treatmentTransplantsUrineAscorbic Acidmedicine.disease_causechemistry.chemical_compoundLeukocytesChromosomes HumanVitamin EChildRespiratory BurstGlutathione DisulfideAge FactorsChromosome BreakageGeneral MedicinePyruvaldehydeGlutathioneBiochemistry8-Hydroxy-2'-DeoxyguanosineChild PreschoolFemaleOxidation-ReductionAdultmedicine.medical_specialtyHeterozygoteAdolescentUrinary systemBiologySex FactorsInternal medicinemedicineHumansVitamin CVitamin EDeoxyguanosineInfantGlutathioneDNAAscorbic acidUric AcidOxidative StressEndocrinologyFanconi AnemiachemistryCase-Control StudiesUric acidReactive Oxygen SpeciesOxidative stressCarcinogenesis
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Different patterns of in vivo pro-oxidant states in a set of cancer- or aging-related genetic diseases

2008

A comparative evaluation is reported of pro-oxidant states in 82 patients with ataxia telangectasia (AT), Bloom syndrome (BS), Down syndrome (DS), Fanconi anemia (FA), Werner syndrome (WS), and xeroderma pigmentosum (XP) vs 98 control donors. These disorders display cancer proneness, and/or early aging, and/or other clinical features. The measured analytes were: (a) leukocyte and urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG), (b) blood glutathione (GSSG and GSH), (c) plasma glyoxal (Glx) and methylglyoxal (MGlx), and (d) some plasma antioxidants [uric acid (UA) and ascorbic acid (AA)]. Leukocyte 8-OHdG levels ranked as follows: WS>BS approximately FA approximately XP>DS approximately AT appr…

AdultMalemedicine.medical_specialtyDown syndromeXeroderma pigmentosumAdolescentmedicine.disease_causeBiochemistrychemistry.chemical_compoundAtaxia TelangiectasiaPhysiology (medical)Internal medicinemedicineHumansBloom syndromeChildAgedXeroderma PigmentosumMethylglyoxalDeoxyguanosineGlutathioneGlyoxalMiddle AgedAscorbic acidmedicine.diseasePyruvaldehydeGlutathioneEndocrinologyFanconi AnemiaantioxidantschemistryBiochemistry8-Hydroxy-2'-DeoxyguanosineUric acidOxidative streFemaleWerner SyndromeDown SyndromeReactive Oxygen SpeciesOxidative stressBloom SyndromeDNA Damage
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In vivoprooxidant state in Werner syndrome (WS): Results from three WS patients and two WS heterozygotes

2005

The hypothesis was tested that Werner syndrome (WS) phenotype might be associated with an in vivo prooxidant state. A set of redox-related endpoints were measured in three WS patients, two of their parents, and 99 controls within a study of some cancer-prone and/or ageing-related genetic disorders. The following analytes were measured: (a) leukocyte 8-hydroxy-2'-deoxyguanosine; (b) glutathione from whole blood, and (c) plasma levels of glyoxal, methylglyoxal, 8-isoprostane, and some plasma antioxidants (uric acid, ascorbic acid, alpha- and gamma-tocopherol). Leukocyte 8-hydroxy-2'-deoxyguanosine levels showed a significant increase in the 3 WS patients vs. 85 controls (p<10(-7)). The disulf…

AdultMaleHeterozygotemedicine.medical_specialtyDinoprostmedicine.disease_causeBiochemistryAntioxidantschemistry.chemical_compoundIn vivoInternal medicineLeukocytesmedicineHumansDeoxyguanosineChromatography High Pressure LiquidMethylglyoxalDeoxyguanosine8-Hydroxy-2'-deoxyguanosineGlyoxalGeneral MedicineGlutathioneMiddle AgedPyruvaldehydeAscorbic acidGlutathioneEndocrinologychemistryBiochemistry8-Hydroxy-2'-DeoxyguanosineUric acidFemaleWerner SyndromeOxidation-ReductionOxidative stressFree Radical Research
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Oxidative stress biomarkers in four Bloom syndrome (BS) patients and in their parents suggest in vivo redox abnormalities in BS phenotype.

2007

Objective: To evaluate an association of Bloom syndrome (BS) phenotype with an in vivo prooxidant state. Methods: The following endpoints were measured in 4 BS patients, their 6 parents, and 78 controls: a) leukocyte and urinary 8-hydroxy-2′-deoxyguanosine (8-OHdG); b) blood glutathione (GSSG and GSH), c) plasma levels of some plasma antioxidants (uric acid, UA, ascorbic acid, AA, α- and γ-tocopherol), and of glyoxal (Glx) and methylglyoxal (MGlx). Results: Leukocyte 8-OHdG levels were significantly increased in the 4 BS patients vs. 40 controls (p = 0.04), while the urinary 8-OHdG levels were non-significantly increased in BS patients. Glutathione disulfide levels and GSSG/GSH ratio were s…

AdultMaleParentsmedicine.medical_specialtyglyoxalAdolescentClinical Biochemistrymedicine.disease_causechemistry.chemical_compoundIn vivoInternal medicinemedicinemethylglyoxalLeukocytesHumansBloom syndromeChildoxidative streGlutathione DisulfideMethylglyoxalDeoxyguanosineGeneral MedicineGlutathioneMiddle AgedAscorbic acidmedicine.diseaseGlutathioneOxidative StressEndocrinologyPhenotypechemistryBiochemistry8-Hydroxy-2'-DeoxyguanosineUric acidGlutathione disulfideBloom syndromeFemaleOxidation-ReductionOxidative stressBiomarkersBloom SyndromeClinical biochemistry
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