19 results
Vitamin D Metabolism

#VitaminD #Metabolism #Pathophysiology #Endocrinology #Pathways
Vitamin D Metabolism ... #VitaminD #Metabolism ... #Pathophysiology ... #Endocrinology
Calcium Homeostasis

Serum Calcium - PTH - Vitamin D Regulation

#Calcium #Homeostasis #Pathophysiology #Autoregulation #VitaminD #PTH #Endocrinology
Calcium - PTH - Vitamin ... #Homeostasis #Pathophysiology ... Autoregulation #VitaminD ... #PTH #Endocrinology
Vitamin D Metabolism Pathways

Dr. Jamie Willows @jamiekwillows

#VitaminD #Metabolism #Pathways #pathophysiology #endocrinology
Vitamin D Metabolism ... jamiekwillows #VitaminD ... Metabolism #Pathways #pathophysiology ... #endocrinology
Calcium homeostasis is a process controlled by chiefly by hormones vitamin D and PTH. 
Vitamin D
chiefly by hormones vitamin ... Vitamin D enters ... classical negative feedback ... #Pathophysiology ... #Endocrinology
Vitamin D Metabolism
Fat-soluble vitamin
Sources: dermal synthesis and food (dairy products, fish)
Active form: calcitriol (1,25-OH Vitamin D)
Main
Vitamin D Metabolism ... Fat-soluble vitamin ... mendesthiagob #VitaminD ... #Metabolism #endocrinology ... #pathophysiology
Menstrual Cycle Physiology: Ovarian Cycle – Ovulation Explained

Around Day 14, estrogen exerts sudden +++ positive feedback
sudden +++ positive feedback ... negative to positive feedback ... 36 hours after LH ... #OvarianCycle #pathophysiology ... #Ovulation #endocrinology
Feedback Loop: Prolactin (PRL)
 • PRL levels exhibit diurnal, menstrual, and age-related variation
 • TRH has
Feedback Loop: Prolactin ... secretion -> Decr FSH/LH ... #FeedbackLoop #endocrinology ... #pathophysiology
Menstrual Cycle Physiology: The Hypothalamic-Pituitary-Ovarian Axis
Estrogen, when released:
 • Negatively feeds back on the hypothalamus and
pituitary to Increased LH ... MenstrualCycle #pathophysiology ... HypothalamicPituitary #endocrinology ... #feedback
Hyperparathyroidism - Primary vs Secondary vs Tertiary 
Lab Comparison:
 • Primary Hyperparathyroidism: ↑→PTH, ↑Calcium, ↑Vitamin D,
PTH, ↑Calcium, ↑Vitamin ... PTH, ↓→Calcium, ↓Vitamin ... PTH, ↑Calcium, ↓Vitamin ... Hyperparathyroidism #diagnosis #endocrinology ... Secondary #Tertiary #pathophysiology
Feedback Loop: Growth Hormone (GH)
Growth Hormone:
 • Liver -> GHR activates JAK-STAT pathway -> Incr IGF1
Feedback Loop: Growth ... #FeedbackLoop #endocrinology ... #pathophysiology