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42 Cards in this Set

  • Front
  • Back

Metabolic disorders are usually inherited in what pattern?

Autosomal recessive

Hypomyelination, gliosis, microcephaly and no lysosomal storage are all signs of what metabolic disease?

Phenylketonuria

Decreased pigmentation in hair and skin, seizures and hyperactivity, severe mental retardation are all clinical manifestations of what metabolic disease?

Phenylketonuria

Deficiency of galactose-1-phosphate uridyl transferase

Galactosemia

In galactosemia there is an accumulation of

G1P, (galactose 1 phosphate)

In Tay Sach's disease, there is an accumulation of

Gangliosides in the brain

Defective enzyme in Tay Sach's disease (GM2 gangliosidis)

Hexoaminidiase A alpha subunit

Most common amongst Ashkenazi Jews and a small population in Quebec

Tay Sachs disease

Deficiency in acid sphingomyelase

Niemann Pick's Disease

Accumulation of sphigomyelin in

Niemann Pick's disease

Breakdown of sphingomyelin to ceramide and phosphorylcholine impaired leading to accumulation in phagocytic cells and neurons -> massing visceromegaly and neurological disorders

Type A Niemann Picks Disease

Accumulation of sphingomyelin leading to massive visceromegaly only and no neurological symptoms

Type B Niemann Picks

The most common underlying cause of acquired metabolic disorders is

hypoxia (mostly related to atherosclerotic plaques)

Leading cause of blindness is

Diabetic retinopathy

Accelerated atherosclerosis affecting aorta and large & medium sized arteries leading to myocardial infarcts caused by diabetes


Gangrene in lower extremeties


Diabetic nephropaty

Macrovascular disease in diabetes

Leading cause of end-stage renal failure leading to kidney transplant

Diabetic Nephropathy

no new blood vessels are formed but hemorrhaging (bleeding), and complications to the vasculature including venous dilation, capillary thickening, edema, etc.

Non-proliferative retinopathy

proliferation of cells leading to formation of new blood vessels (neovascularization), fibrosis (connective tissue being laid down), and hemorrhage of these newly formed blood vessels

Proliferative retinopathy

Squamous metaplasia of special epithelial cells conjunctiva and tear ducts in the eye leading to dryness of cornea and conjunctiva caused by Vitamin A deficienct

Xeropthlamia

Softened cornea caused by Vitamin A deficiency due to squamous metaplasia of specialized epithelial cells to keratinizing epithelial cells

Keratomalacia

Keratin debris that build up in the eye forming small opaque spots as a result of the squamous metaplasia induced by Vitamin A deficiency

Bitot Spots

Fat soluble vitamins

A, D, E, K

What are the toxic effects of vitamin A buildup?

Teratogen

Overweight BMI?

>25kg/m2

Obese BMI

>30kg/m2

Obesity waist cirumference in men and women

Men > 40 inches


Women > 35 inches

Vitamin A's role in night blindness?

Component of rhodopsin in retinal rods

Components in cells responsible for recognition of pathogens?

TLRs in conjuction with CD14

MHC class I molecules are expressed on....

All healthy nucleated cells

MHC class I is an

Inhibitory signal

Virus /damaged cells _____________expression of MHC I and _________________expression of activating ligandq

inhibit expression of MHCI and increase expression of activating ligand

Classical complement pathway is part of...

adaptive response because it requires antibodies

Alternative complement pathway is activated by...


What are the 3 functions?

Activated Microbes directly:


1. coating of microorganism


2. Chemokines for phagocytic cells


3. Formation of Membrane Attack Complexes --> pore formation

T cells have what type of receptor that is T cell specific?

T Cell Receptors

CD3 complex are polypeptide chain clusters linked to ...


They (do/do not) recognize antigens directly

TCRs that do not recognize antigens directly

Associate with TCRs to help induce signalling in cells the T cells after TCRs bind an antigen. DO NOT bind antigen directly

CD3 complexes

Ig that activates complement only

IgM

Ig that activates complement, opsonizes and crosses placenta to protect fetus

IgG

Coats various parasites and chemokine for eosinophils

IgE

CD40L does what

Stimulates microbicidal substances production in macrophages and Activate B cells

IL-2

Stimulates proliferation of T cells

IFN-gamma

Stimulates production of IgG in b cells