0000000000174087

AUTHOR

Sharmin Sheikh

showing 2 related works from this author

Increased 2-Hydroxylation of Estrogen in Women with a Family History of Osteoporosis

2005

Recent studies indicate that women with predominant estrogen metabolism through the 2-hydroxyl (inactive) pathway have lower bone mineral density (BMD) compared with those with predominant 16alpha-hydroxylation (active). Although many factors have been identified to affect estrogen metabolism, the role of a family history of osteoporosis remains unknown. The objective of this study was to investigate the influence of family history of osteoporosis and other clinical factors on estrogen hydroxylation. This was a cross-sectional study conducted in a university-based research center from May 2002 to February 2004. The participants included 175 otherwise healthy postmenopausal women at least 1 …

medicine.medical_specialtymedicine.drug_classEndocrinology Diabetes and MetabolismUrinary systemClinical BiochemistryOsteoporosisHydroxylationBiochemistryArticleHydroxylationchemistry.chemical_compoundEndocrinologyBone DensityInternal medicinemedicineHumansosteoporosiFemurFamily historyAgedBone mineralPostmenopausal womenbusiness.industryBiochemistry (medical)EstrogensMiddle Agedmedicine.diseaseEstrogenCross-Sectional StudiesEndocrinologychemistryEstrogenOsteoporosiswomen health.CalciumFemalebusinessThe Journal of Clinical Endocrinology & Metabolism
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Effect of CYP1A1 Gene Polymorphisms on Estrogen Metabolism and Bone Density

2004

UNLABELLED: In this study, we evaluated the effect of polymorphisms of the CYP1A1 gene, linked to hormone-related cancers, on estrogen metabolism and BMD. We found that variants carrying the A allele (CA and AA) for the C4887A polymorphism have a significantly higher degree of estrogen catabolism and lower femoral BMD. INTRODUCTION: Polymorphisms of the CYP1A1 gene, one of the key enzymes that metabolize estrogen, have been linked with hormone-related cancers. We investigated the impact of these polymorphisms on estrogen metabolism and BMD, which is another hormone-dependent health issue. MATERIALS AND METHODS: One hundred seventy postmenopausal women (mean age, 63.5 +/- 0.6 years) particip…

medicine.medical_specialtyTime FactorsGenotypeBone densitymedicine.drug_classEndocrinology Diabetes and MetabolismOsteoporosisRadioimmunoassayBiologyArticleCollagen Type IBone resorptionImmunoenzyme TechniquesAbsorptiometry PhotonBone DensityRisk FactorsInternal medicinehormones and receptorGenotypeCytochrome P-450 CYP1A1medicineHumansosteoporosiOrthopedics and Sports MedicineFemurBone ResorptionAllelesAgedPolymorphism GeneticEstradiolgenetic researchEstrogensMiddle Agedmedicine.diseaseGenotype frequencyPostmenopauseMenopauseEndocrinologyEstrogenepidemiologyFemaleCollagenGene polymorphismMenopausePeptidesPolymorphism Restriction Fragment LengthJournal of Bone and Mineral Research
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