Material segundo examen_bioquimica_1
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Material para estudiar del segundo examen de bioquimica estructural......M.V.Z.

Material para estudiar del segundo examen de bioquimica estructural......M.V.Z.

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Material segundo examen_bioquimica_1 Material segundo examen_bioquimica_1 Presentation Transcript

  • Fig. 4-5a, p. 77
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  • Steroid Hormones.
    Cholesterolisthe precursor of thefivemajorclasses of steroid hormones:progestagens, glucocorticoids, mineralocorticoids, androgens, and estrogens
    . These hormones are powerfulsignalmoleculesthatregulate a host of organismalfunctions. Progesterone, a progestagen, prepares thelining of theuterusforimplantation of anovum.
    Progesteroneisalsoessentialforthemaintenance of pregnancy. Androgens of malesecondary sex characteristics, whereasestrogens (such as estrone) are requiredforthedevelopment of femalesecondary sex characteristics. Estrogens, alongwithprogesterone, alsoparticipate in theovariancycle.
  • ESTRUCTURA QUIMICA DE ACIDOS BILIARES (PRIMARIOS, SECUNDARIOS)
    1rias
    Ac. Cólico
    2rias
    Acido Deoxicólico
    Colesterol
    Ac. Quenodeoxicólico
  • COMPOSICION DE LA SECRECION BILIAR (0.5-1 L/d)
    COMPONENTE CONCENTRACION (mmol)
    Electrolitos
    Na+ 140-165
    K + 3-7
    Cl - 80-120
    HCO3 - 10-55
    Ca 2+ 2.5-6.5
    Mg 2+ 1.5-3.0
    Aniones Orgánicos
    Acidos Biliares 3-45
    Bilirrubina 1-2
    Lípidos
    Lecitina 140-800 mg7dl
    Colesterol 100-320 mg/dl
    Proteínas 1-20 mg/ml
    Péptidos y Aminas
    Glutatión 3-5
    Glutamato 1-2.5
    Aspartato 0.4-1
    Glicina 0.5-2.5