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Biochemistry
Acid Base Imbalances
15
Chemistry
Post-Graduate
06/19/2010

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Term
Respiratory Alkalosis
Definition
-too much CO2 excretion by the lungs
-caused by hyperventilation
-compensated for by metabolic acidosis
Term
Respiratory Acidosis
Definition
-reduced CO2 excretion by the lungs
-caused by diseases such as COPD, emphysema, bronchitis, asthma
-compensated for by metabolic alkalosis
Term
What happens to the values of arterial blood pH, HCO3-, and CO2 as RESPIRATORY ACIDOSIS develops?
Definition
pH decreases
HCO3- increases
CO2 increases
Term
What happens to the values of arterial blood pH, HCO3-, and CO2 as RESPIRATORY ALKALOSIS develops?
Definition
pH increases
HCO3- decreases
CO2 decreases
Term
Metabolic Alkalosis
Definition
alkaline conditions in the body from ANY CAUSE OTHER THAN RESPIRATORY ALKALOSIS
-ex. vomitting stomach fluid/contents
Term
What happens to the values of arterial blood pH, HCO3-, and CO2 as METABOLIC ALKALOSIS develops?
Definition
pH increases
HCO3- increase
CO2 increases (after compensation)
Term
Metabolic Acidosis
Definition
-Generation of too much nonvolatile acid in the body
-caused by high protein diets, renal failure, and anabolic activity (lactic acid from exercising)
Term
What happens to the values of arterial blood pH, HCO3-, and CO2 as METABOLIC ACIDOSIS develops?
Definition
pH decreases
HCO3- decreases
CO2 decreases (after compensation)
Term
Nonpolar, Zwitterionic amino acids
Definition
Glycine (Gly)
Alanin (Ala)
Valine (Val)
Leucine (Leu)
Isoleucine (Ile)
Methionine (Met)
Trytophan (Trp)
Phenylalanine (Phe)
Prolien (Pro)
Term
Polar, Zwitterionic amino acids
Definition
Serine (Ser)
Threonine (Thr)
Cysteine (Cys)
Asparagine (Asn)
Glutamine (Gln)
Tyrosine (Tyr)
Term
Zwitterionic amino acids
Definition
have side chains that are either non polar or polar

the alpha amino and alpha carboxyl groups give zwitterionic amino acids a net charge near zero at neutral pH
*side chain has no charge*
Term
Polar, anionic (acidic) amino acids
Definition
Aspartate (Aspartic acid, Asp)
Glutamate (Glutamic acid, Glu)
Term
Polar, cationic (basic) amino acids
Definition
Lysine (Lys)
Arginine (Arg)
Histidine (His)
Term
What accounts for the reduces insulin glargine solubility relatively to human insulin at near neutral pH?
Definition
Glargine has a more neutral charge, making it more hydrophobic/polar and less soluable than human insulin

also, since insulin molec have charges of -1.8, they repel eachother at pH 7 and thus insulin dissolves readily. this electrostatic repulsion between glargine is much less and therefore, it does not dissove as rapidly.
Term
How would you modify the primary structure of insulin to increase its solubility and make inhected insulin available to insulin-sensitive tissues more rapidly than human insulin?
Definition
increase the anionic amino acids, making it more polar, thus increasing the electrostatic repulsion, which results in increased hydrophobic interactions and causes the insulin to dissolve more rapidly
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