Endocrine Random Flashcards
endoderm derivatives neck
thyroid and parafollicular cells
embryo adrenal cortex
mesoderm
medulla adrenal embryo
neural crest
common alpha subunit
TSH, LH, FSH, hCG
basophils
FLAT
FSH, LH, ACTH, TSH
transport posterior pituitary
ADH and oxytocin transported by neurophysin
derived from neuroectoderm
synthesis insulin
RER, stored in secretoy granules
insulin dependent transporters
GLUT 4
adipose, striated muscle
sympathetics regulation insulin
alpha 2 decrease release
beta 2 increase release
tesamorelin
GH analog used to treat HIV lipodystrophy
prolactin inhibition in males and females
inhibits GnRH synthesis and release
inhibits ovulation and spermatogenesis
increased GH
exercise, deep sleep, puberty, hypoglycemia
leptin
produced by adipose tissue
sleep deprivation decreases leptin (leptin regulates satiety)
endocabinoid receptors
in hypothalamus and nucleus accumbens
ADH on osmolarity
decrease serum and increase urine
differentiation in 21 and 11 beta hydroxylase
salt wasting and increased renin in 21
decreased renin in 11 and increased BP
exogenous corticosteroids micro
reactivated TB and candidiasis
affect of pH on calcium
increase pH leads to hypocalcemia due to change in albumin affinity
PTH on osteo
increase RANKL secreted by osteoblasts, binds RANK on osteoclasts
magnesium on PTH
mild decrease Mg increases PTH
severely decreased decreased Mg
systemic T3
increase beta1 receptors
increase BMR through Na/K ATPase activity
thyroid binding globulin
increased in OCP
decreased in hepatic failure and steroids
Wolff-Chaikoff
excess iodine temporarily inhibits thyroid peroxidase
cAMP signaling
FLAT ChAMP
FSH, LH, ACTH, TSH, CRH, hCG, ADH, MSH, PTH
cGMP signaling
BNP, ANP, EDRF, NO
BAD GraMP
IP3 signaling
GnRH, oxytocin, TRH, Histamine, Angio II, Gastrin
GOAT HAG
intracellular receptor
Progesterone, estrogen, testosterone, cortisol, aldosterone, T3/4, vitamin D
PET CAT on TV
receptor tyrosine kinase
insulin, FGF, PDGF, EGF
nonreceptor tyrosine kinase
prolactin, immunomodulators, GH, G-CSF, erythropoietin, thrombopoietin
jak/stat PIGGLET
sex hormone binding globulin
decreased in women leads to hirsutism
increased in men leads to gynecomastia
increased by OCP and pregnancy
testing Cushing sydrome
decreased ACTH-tumor or exognous
high dose dexamethasone (no suppression in ectopic) but suppressed in Cushing disease (pituitary adenoma)
lab primary adrenal insufficiency
low cortisol, high ACTH
lab secondary adrenal insufficiency
low cortisol, low ACTH
metyrapone test
decrease 11-deoxy and increase ACTH in primary
decrease both in secondary
normal is decrease cortisol and increase ACTH
most common cause Addison in developing world
TB
secondary adrenal insufficiency
no hyperkalmeia due to preserved RAAS
no skin pigmentation
neuroendocrine tumors contents
amine precursor uptake decarboxylase APUD
neuroblastoma
neural crest cell origin
can cross midline
overexpression n-myc
histology neuroblastoma
Homer Wright rosettes (and in medulloblastoma)
germline mutations associated with pheo
NF-1, VHL, RET (MEN 2A/B)
cancer risk Hashimoto
non-Hodgkin lymphoma (B cell origin)
histology Hashimoto
Hurthle cells, lymphoid aggregates with germinal centers
hypersensitivity Graves
type II
source of pretibial myxedema
increased fibroblasts
HLA Graves
DR3, B8
Jod Basedow
thyrotoxicosis in patient with iodine deficiency and partially autonomous
opposite of Wolff-Chaikoff
histology papillary carcinoma
empty nuceli, psammoma bodies, nuclear grooves
RET and BRAF mutations, history of radiation
genetics follicular carcinoma
RAS
histology medullary carcinoma
calcitonin, sheets of cells in amyloid stroma
stains Congo red
pseudohypoparathyroidism
Albright hereditary
shortened 4/5 digit and short stature
defect in Gs causing end organ resistance to PTH
from mother due to imprinting (1A), normal PTH if inherited from father
osteitis fibrosa cystica
cystic bone with brown fibrous tissue consisting of osteoclasts and hemosiderin from hemorrhages due to increase PTH
familial hypocalciuric hypercalcemia
defective G coupled Ca sensing receptors, higher than normal Ca levels required to turn off PTH
Nelson syndrome
enlargement of ACTH secreting pituitary adenoma after bilateral adrenalectomy
presents with hyperpigmentation, HA, bitemporal hemianopia
acromegaly cancer
increased colorectal polyps and cancer
HF most common cause of death though
Laron syndrome
defective growth hormone receptors
saddle nose, prominent forehead, delayed skeletal maturation, small genitalia
water deprivation test
central-increase after given ADH
little change in nephrogenic
treatment nephrogenic DI
HCTZ, amiloride, indomethacin
most common cause of death in DM
MI
osmotic damage DM
sorbitol acculumation in organs with aldose reductase or absent sorbitol dehydrogenase
neuropathy and cataracts
histology T2DM
islet amyloid polypeptide deposits
symptoms DKA
Delirium
Kussmaul respirations
dehydration
hyperosmolar hyperglycemic state
seen in elderly
hyperglycemia and increase serum osmolality without acidosis
give insulin
symptoms glucagonoma
dermatitis
diabetes
DVT
declining weight and depression
association insulinoma
MEN1
presentation somatostatinoma
diabetes, steatorrhea, gallstones, achlorhydria
right sided valvular heart disease
tricuspid regurg, pulmonic stenosis
labs carcinoid tumor
niacin def
5-HIAA
secretin test
gastrin levels remain high in ZE after secretin administration
association ZE
MEN 1
inheritance MEN
dominant
MEN1
pituitary
pancreatic endocrine
parathyroid
Ch 11 tumor suppressor
MEN2A
parathyroid
medullary
pheo
MEN2B
medullary
pheo
neuromas (mucosal)
marfinoid habitus
lactic acidosis metformin
from renal insufficiency
disulfuram diabetes
first gen sulfonylureas
diabetes pancreatitis
GLP-1 analogs
exenatide
diabetes urinary and respiratory infections
DPP-4 inhibitors
gliptins
ions SGLT2 inhibitors
flozin
hyperkalemia
thioamides in pregnancy
PTU in first trimester
methimazole in second and third trimesters
cause aplasia cutis
methimazole
fludricortisone
aldo with little gluco effects
used in primary adrenal insufficiency
cinacalet
sensitizes Ca sensing receptor