1. Hypothalamus & Pituitary

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  • 8/18/2019 1. Hypothalamus & Pituitary

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    GH  Somatropin / Somatrem 

    - Prader-Willi syndrome- Noonan’s syndrome- Turner syndrome - CKD (chronic kidney disease)

    IGF-1  Mecasermin 

    - Used when treatment when ! is not

    res"ondin#- Can cause !$P%#lycemia (need to take in some C!% a&ter

    administration)

    GH Antagonists (can’t use 'omatostatin due to short hal&-li&e)

    (somatostatin &rom "ancreas)

    * Octreotide  inhi+its the release o& !o Carcinoid syndrome (decreases serotonin release)

    o WD!, (watery diarrhea/hy"okalemia/achlorohydria)

    o leedin# eso"ha#eal .arices (decreases "ortal .enous "ressure)

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    * Pegvisomant  ! hormone 01C1PT%0 anta#onist (no e2ect on! release)

    o 3ndication acrome#aly

    Gonadotropins

    Clinical uses4

    * %.ulation induction in women with ano.ulation due to4o !y"o#onadotro"ic hy"o#onadism (nd hy"othyroidism)

    o Polycystic o.ary syndrome

    o %+esity

    'tartin# &rom the 5rd day o& the menstrual cycle6 #i.e daily 7'!

    &or 8- days* Controlled o.arian hy"er stimulation in 3975* :ale in&ertility

    ;- weeks o& 7'!/

    * :ulti"le "re#nancies

    FSH

    1. Urofollitropin / Follitropin alfa / Follitropin eta!H

    1. !"tropina* 7emale  o.ulation in women / &ormation o& cor"us luteum+* :ale  stimulates &ormation o& Testosterone

    #$G  "roduced +y the human "lacenta

    O%&tocin

    * 3nduces la+or> use&ul in4o Post maturity

    o

    !ealth risk to mom (dia+etes6 "reeclam"sia)o Premature ru"ture o& mem+rane

    * ,u#ment delayed la+ora* a+y that is not +orn +y week ?

    5* Control uterine hemorrha#e a&ter +irth

     To=icity4

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    Don’t #i.e it to a "re#nant "erson +ecause it will cause uterine contractions

    +e&ore +irth* ,lso will cause @uid retention and water into=ication*

    Contraindicated in4

    - 7etal distress / Prematurity / Ce"halo"el.ic dis"ro"ortion

    Prolactin

    H&perprolactinemia

     can +e due to D0U' or ,D1:%N,s• Women  amenorrhea / #alactorrhea

    • :en  decreased li+ido / in&ertility

    'opamine Agonists

    - :ostly used in cases o& micro-

    adenoma (Acm)* :acro-adenoma

    would reBuire sur#ery*- Can cause !untin#ton like

    sym"toms

    1. (romocriptine ). $aergoline*. Pergolide

    Clinical4

    - These can +e used in cases o& "rolactin secretin# tumors / lower

    circulatin# "rolactin le.els and restorin# o.ulation- 'heehan’s 'yndrome4 maor hemorrha#e or hy"otension durin# the

    "eri"artum "eriod6 can result in ischemia o& the a2ected "ituitaryre#ions leadin# to necrosis*

    o Need hormone re"lacement with4

    Prolactin

    Corticosteroids

    +asopressin ,A'H

    +14 .ascular smooth muscle cells .asoconstriction

    +)4 renal tu+ule cells reduce diuresis

    DeEciency leads to Ne"hro#enic Dia+etes 3nsi"idus

    $entral  desmo"ressin

    ep#rogenic  diuretics (thiaFide) hel"s with loss o& NaG (+alancin#

    +lood osmolality)

    'esmopressin  synthetic ,D!

    - Used &or central dia+etes insi"idus

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    o 3nection with this dru# will cause HIJ chan#e in urine

    osmolality (dia#nosis)

    $onivaptan / olvapatan  ,D! anta#onists

    - Used &or hy"onatremia/heart

    &ailure

    H&pot#alamic Hormones

    ,Gn0H

    Natural .ersions o& the hormone is

    called onadorelin +ut it’s a hu#e

    "e"tide and hard to administer*

    1. Goserelin). Histrelin*. !e"prolide. aferelin

     The e2ect o& these dru#s will de"end on the mode o& administration due to

    "hysiolo#ical mechanisms o& action4

    - Pulsatile  will stimulate 7'! and

    "hysiolo#ical release)- Continued  inhi+its release o& 7'! and

    Clinical4

    * 'timulation o& #onadotro"in "roduction is use&ul &or4o 7emale / :ale in&ertility

    * 'u""ression o& #onadotro"in "roduction is use&ul &or4o ,ssisted re"roducti.e technolo#ies

     $ou don’t want to do 397 L ha.e a normal o.ulation

    +ecause that increases the chance o& ha.in# multi"le

    +a+ies at once* o 1ndometriosis ("resence o& endometrial tissue outside the

    uterus) 0educes estro#en and "ro#esterone concentrations

    o Uterine

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    - Continuous use o& n0! analo#s in women  ty"ical sym"toms o&

    meno"ause- These can +e E=ed +y usin# n0! rece"tor anta#onists4

    1. Ganireli%). $etroreli% 

     These two dru#s "re.ent the

    o.arian hy"er stimulation (&or e=am"le when you are doin# 397> can +e used

    instead o& do"amine a#onists with less side e2ects)