Search for dissertations about: "CYP7B1"

Showing result 1 - 5 of 10 swedish dissertations containing the word CYP7B1.

  2. 1. Hormonal Regulation of the Human CYP27A1 and CYP7B1 Genes

    Author : Wanjin Tang; Kjell Wikvall; Maria Norlin; Mats Gåfvels; Uppsala universitet; []
    Keywords : Pharmaceutical biochemistry; CYP27A1; CYP7B1; cholesterol; estrogen; androgen; prostate; glucocorticoid receptor; fetal development; Farmaceutisk biokemi;

    Abstract : CYP27A1 and CYP7B1 are widely expressed in various human tissues and are two key enzymes involved in the pathways for conversion of cholesterol to bile acids. Also, CYP27A1 is involved in bioactivation of vitamin D3 and CYP7B1 plays a role in 7alpha-hydroxylation of dehydroepiandrosterone and other steroids. READ MORE

  4. 2. Steroid-Metabolizing Cytochrome P450 (CYP) Enzymes in the Maintenance of Cholesterol and Sex Hormone Levels

    Author : Hanna Pettersson; Maria Norlin; Kjell Wikvall; Paolo Parini; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; CYP27A1; CYP7B1; cytochrome P450; estrogen receptor; androgen receptor; cholesterol; sex hormone; hydroxylation; steroid metabolism; regulation of steroid levels; Pharmaceutical biochemistry; Farmaceutisk biokemi; Farmaceutisk biokemi; Pharmaceutical Biochemistry;

    Abstract : The enzymes CYP27A1 and CYP7B1 are widely expressed in various human tissues and perform catalytic reactions in cholesterol homeostasis and endocrine signaling. We have investigated the metabolism of a synthetic oxysterol. READ MORE

  5. 3. Enzymatic Regulation of Steroidogenesis and Nuclear Receptor Activation : Special Focus on Vitamin D and Sex Hormones

    Author : Johan Lundqvist; Kjell Wikvall; Maria Norlin; Magnus Ingelman-Sundberg; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; adrenal steroidogenesis; CYP7B1; vitamin D; calcitriol; enzymatic regulation; transcriptional regulation; CYP21A2; aromatase; sex hormone; estrogen; androgen; nuclear receptor; Pharmaceutical biochemistry; Farmaceutisk biokemi; Farmaceutisk biokemi; Pharmaceutical Biochemistry;

    Abstract : Enzyme-catalyzed reactions are important to regulate steroidogenesis and nuclear receptor activation. The present investigation examines the role of steroid metabolism catalyzed by CYP7B1 for regulation of hormone receptor activation and the effects of vitamin D on enzymatic regulation of steroidogenesis. READ MORE

  6. 4. The role of the prostate in androgen metabolism

    Author : Mats Olsson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The androgenic steroid hormones are essential for the physiological development of the prostate gland and are also implicated in pathological processes such as benign prostatic hyperplasia and prostate cancer. The systemic effect of endocrine activity in the prostate gland has so far been considered of minor importance. READ MORE

  7. 5. Estrogen receptor b in the urogenital tract of both male and female

    Author : Zhang Weihua; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The central finding of this thesis is that estrogen receptors regulate androgen receptor expression: ERalpha unpregulates AR and ERbeta down-regulates AR. With this theme, we explored the physiological role of an ER-AR pathway, especially ERbeta-AR, in some urogenital tissues, uterus, ovary and prostate, using ERbeta knockout mice. READ MORE