Search results for "Transcortin"

showing 8 items of 8 documents

Responses of serum androgenic-anabolic and catabolic hormones to prolonged strength training.

1988

Endocrine and neuromuscular effects of prolonged strength training were investigated in 21 strength-trained male subjects during the course of a 24-week progressive strength training and during a subsequent detraining period of 12 weeks. Maximal isometric leg extensor force increased by 19% (P less than 0.001) during the first 20 weeks, followed by a plateau during the 4 latest weeks of training. During the course of the training period, no systematic change was found in serum testosterone concentrations, but there was a decreasing tendency in the concentrations of free testosterone (NS), 17-OH-progesterone (NS), androstenedione (P less than 0.05), dehydroepiandrosterone (P less than 0.05),…

AdultMalemedicine.medical_specialtyHydrocortisoneStrength trainingmedicine.drug_classDehydroepiandrosteronePhysical Therapy Sports Therapy and RehabilitationIsometric exercisePhysical strengthTranscortinInternal medicineHydroxyprogesteronesMedicineHumansOrthopedics and Sports MedicineTestosteroneTestosteroneHydrocortisoneTranscortinPhysical Education and Trainingbiologybusiness.industry17-alpha-HydroxyprogesteroneAndrostenedioneAndrogenEndocrinologybiology.proteinAndrogenssense organsbusinessmedicine.drugMuscle ContractionInternational journal of sports medicine
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3H-estradiol and3H-R5020 binding in cytosols of normal and neoplastic human ovarian tissue

1983

High-affinity cytoplasmic estrogen and progesterone receptors in normal and abnormal ovarian tissues were studied. Estradiol receptor was detectable in 65% and progesterone receptor in 36% of the malignant tumors; 39% of all malignant ovarian tissues were estradiol- as well as progesterone-receptor-positive. Tumors were said to be receptor-positive when the receptors bound greater than 5 fM steroid/mg cytosol protein. No correlations were found between receptor status and histopathological diagnosis. In normal ovarian tissues collected at various phases of the menstrual cycle no changes in [3H]-estradiol and [3H]-R5020 binding could be detected. Analysis of the receptor concentration for bo…

Cancer Researchmedicine.medical_specialtyReceptor StatusNorpregnadienesmedicine.drug_classmedia_common.quotation_subjectOvaryReceptors EstradiolBiologyTritiumPromegestoneCytosolOvarian carcinomaInternal medicineProgesterone receptormedicineHumansEstrogen Receptor StatusMenstrual cyclemedia_commonOvarian NeoplasmsTranscortinEstradiolOvaryEndocrinologymedicine.anatomical_structureReceptors EstrogenOncologyEstrogenFemaleReceptors Progesteronehormones hormone substitutes and hormone antagonistsTamoxifenmedicine.drugInternational Journal of Cancer
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Application of Liquid-Liquid Partition Chromatography (LLPC) in the Preparation of Steroid Binding Proteins

1989

Two human serum proteins, i.e. sex hormone binding globulin (h-SHBG) and corticosteroid binding globulin (h-CBG), rat corticosteroid binding globulin (r-CBG), and progesterone binding globulin (PBG) from new guinea pig were purified by the application of three different modes of chromatography. The proteins were purified by affinity chromatography and anion exchange chromatography. Fractions containing the steroid binding proteins were finally purified by liquid-liquid partition chromatography on LiParGel 750 (Merck, Darmstadt, FRG). This Chromatographic sequence clearly separated the steroid binding proteins from other proteins, mainly from serum albumin without a loss of protein and compl…

ChromatographybiologyChemistrymedicine.medical_treatmentSerum albuminProgesterone-Binding GlobulinDNA-binding proteinBlood proteinsSteroidSex hormone-binding globulinTranscortinAffinity chromatographybiology.proteinmedicine
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Application of liquid-liquid partition chromatography in the simultaneous purification of sex-hormone-binding globulin and corticosteroid-binding glo…

1987

Two human serum proteins, corticosteroid-binding globulin (CBG) and sex-hormone-binding globulin (SHBG), were purified to homogeneity by the application of a combination of three different modes of chromatography. Human pregnancy serum was fractionated with ammonium sulphate. SHBG (50% pellet) and CBG (80% pellet) were then purified by affinity chromatography on tresyl-activated Sepharose with 15-aminopentadecanoic acid (for SHBG) and 1,12-diaminododecane (for CBG) as spacers and 17 zeta-aminoethyl-5 alpha-androstan-3 beta,17-diol (for SHBG) and 17 alpha-hydroxy-4-androsten-3-one-17 beta-carboxylic acid (for CBG) as specific ligands for these two proteins. The eluate was injected into a Mon…

GlobulinSerum albuminReceptors Cell SurfaceBiochemistryChromatography AffinityAnalytical ChemistrySepharoseSex hormone-binding globulinTranscortinAffinity chromatographyPregnancySex Hormone-Binding Globulinpolycyclic compoundsHumansreproductive and urinary physiologyTranscortinChromatographybiologyChemistryElutionOrganic ChemistryGeneral MedicineBlood proteinsBiochemistrybiology.proteinElectrophoresis Polyacrylamide GelFemaleSpectrophotometry UltravioletIsoelectric Focusinghormones hormone substitutes and hormone antagonistsChromatography LiquidJournal of chromatography
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Binding of oral contraceptive progestogens to serum proteins and cytoplasmic receptor

1990

Abstract Some progestogens widely used in oral contraceptives are characterized at the level of high-affinity receptor binding as well as binding to sex hormone-binding globulin and corticosteroid-binding globulin. With regard to binding to sex hormone-binding globulin, gestodene, levonorgestrel, and to a lesser extent 3-ketodesogestrel (which is only formed from the prodrug desogestrel in the body), show a behavior that is manifested in the relatively high affinity to sex hormone-binding globulin, whereas desogestrel and norgestimate do not display any measurable affinity for this specific steroid-binding serum protein. Furthermore, levonorgestrel and gestodene dissociate very much more sl…

MaleCytoplasmmedicine.medical_specialtyNorpregnenesmedicine.medical_treatmentReceptors Cell SurfaceLevonorgestrelCytoplasmic receptorGestodeneBinding CompetitiveContraceptives Oral HormonalSex hormone-binding globulinPregnancyDesogestrelSex Hormone-Binding GlobulinInternal medicineNorgestrelmedicineAnimalsHumansLevonorgestrelProgesteroneTranscortinDesogestrelProgesterone CongenersProgestogenbiologybusiness.industryNorgestrelUterusObstetrics and GynecologyRats Inbred StrainsBlood ProteinsNorgestimateRatsKineticsEndocrinologybiology.proteinFemaleProgestinsbusinesshormones hormone substitutes and hormone antagonistsmedicine.drugAmerican Journal of Obstetrics and Gynecology
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Atom-based Stochastic and non-Stochastic 3D-Chiral Bilinear Indices and their Applications to Central Chirality Codification

2006

Abstract Non-stochastic and stochastic 2D bilinear indices have been generalized to codify chemical structure information for chiral drugs, making use of a trigonometric 3D-chirality correction factor. In order to evaluate the effectiveness of this novel approach in drug design we have modeled the angiotensin-converting enzyme inhibitory activity of perindoprilate's σ-stereoisomers combinatorial library. Two linear discriminant analysis models, using non-stochastic and stochastic linear indices, were obtained. The models had shown an accuracy of 95.65% for the training set and 100% for the external prediction set. Next the prediction of the σ-receptor antagonists of chiral 3-(3-hydroxypheny…

Models MolecularQuantitative structure–activity relationshipIndolesStereochemistryStatic ElectricityQuantitative Structure-Activity RelationshipBilinear interpolationAngiotensin-Converting Enzyme InhibitorsIn Vitro TechniquesSet (abstract data type)PiperidinesLinear regressionMaterials ChemistryReceptors sigmaOrder (group theory)Applied mathematicsComputer SimulationPhysical and Theoretical ChemistrySpectroscopyMathematicsTranscortinStochastic ProcessesChemistryAtom (order theory)StereoisomerismLinear discriminant analysisComputer Graphics and Computer-Aided DesignData setDrug DesignLinear ModelsSteroidsTrigonometryChirality (chemistry)Proceedings of The 10th International Electronic Conference on Synthetic Organic Chemistry
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Atom-based 3D-chiral quadratic indices. Part 2: prediction of the corticosteroid-binding globulinbinding affinity of the 31 benchmark steroids data s…

2005

A quantitative structure-activity relationship (QSAR) study to predict the relative affinities of the steroid 'benchmark' data set to the corticosteroid-binding globulin (CBG) is described. It is shown that the 3D-chiral quadratic indices closely correlate with the measured CBG affinity values for the 31 steroids. The calculated descriptors were correlated with biological data through multiple linear regressions. Two statistically significant models were obtained when non-stochastic (R = 0.924 and s = 0.46) as well as stochastic (R = 0.929 and s = 0.46) 3D-chiral quadratic indices were used. A leave-one-out (LOO) approach to model validation is used here; the best results obtained in the cr…

Quantitative structure–activity relationshipClinical BiochemistryPharmaceutical ScienceQuantitative Structure-Activity RelationshipBiochemistryCross-validationStructure-Activity RelationshipQuadratic equationDrug DiscoveryLinear regressionApplied mathematicsComputer SimulationMolecular BiologyTranscortinChromatographyMolecular StructureChemistryOrganic ChemistryComputational BiologyRegression analysisAffinitiesData setDatabases as TopicModels ChemicalTopological indexMolecular MedicineSteroidsBioorganicmedicinal chemistry
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Preparation of electrophoretic variants of Corticosteroid-binding Globulin (CBG) using liquid liquid partition chromatography

1988

Abstract Human corticosteroid-binding globulin (CBG) was purified to homogeneity by application of three different chromatographic methods. After fractionation of pregnancy serum with ammonium sulfate the 80%-pellet was used for affinity chromatography based on tresyl activated Sepharose (Pharmacia, Uppsala, Sweden). The affinity eluate was injected into a Mono Q anion exchange column (Pharmacia). Fractions containing CBG were finally purified by liquid liquid chromatography on LiParGel 750 (Merck, Darmstadt, F.R.G.) 1,2 . The purified protein was characterized by IEF and PAGE. This paper describes a method for the chromatographic separation of the two variants of CBG without a loss of bind…

TranscortinPharmacologyAmmonium sulfateChromatographybiologyGlobulinChemistryElutionOrganic ChemistryClinical BiochemistryFractionationBiochemistryChromatography AffinitySepharoseElectrophoresischemistry.chemical_compoundEndocrinologyTranscortinAffinity chromatographybiology.proteinHumansElectrophoresis Polyacrylamide GelMolecular BiologyChromatography LiquidSteroids
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