The Calgary Guide to Understanding Disease @TheCalgaryGuide
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pathophysiology feedbackloop gh menstrualcycle pituitary 21hydroxylasedeficiency diagnosis excess genetics hpoa hypothalamicpituitary ovariancycle overproduction ovulation pediatrics peds prl prolactin signs symptoms
Feedback Loop: Growth Hormone (GH) Growth Hormone: • Liver -> GHR activates JAK-STAT pathway -> Incr IGF1
Feedback Loop: Growth ... metabolic abn #GrowthHormone ... #FeedbackLoop #endocrinology
Menstrual Cycle Physiology: Ovarian Cycle – Ovulation Explained Around Day 14, estrogen exerts sudden +++ positive feedback
sudden +++ positive feedback ... negative to positive feedback ... pathophysiology #Ovulation #endocrinology
Feedback Loop: Prolactin (PRL) • PRL levels exhibit diurnal, menstrual, and age-related variation • TRH has
Feedback Loop: Prolactin ... #FeedbackLoop #endocrinology
Growth Hormone Excess - Pathogenesis and clinical findings • Acromegaly and gigantism share the same pathophysiology
fraction • HTN #GrowthHormone ... signs #symptoms #endocrinology
Menstrual Cycle Physiology: The Hypothalamic-Pituitary-Ovarian Axis Estrogen, when released: • Negatively feeds back on the hypothalamus and
HypothalamicPituitary #endocrinology ... #feedback
21-Hydroxylase Deficiency (21-OHD): Pathogenesis and Clinical Findings Autosomal recessive mutation in CYP21A2 coding for the enzyme 21-OHase
#21HydroxylaseDeficiency #21OHD ... pathophysiology #genetics #endocrinology
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