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Carnegie Chem NPN
Chemistry NPN Compound and Palsma Protein WS MA Fall 2014
| Question | Answer |
|---|---|
| What are the NPN compounds? | urea, creatinine, uric acid, ammonia, creatine, amino acids |
| What are most NPN compounds? | Waste products that require cood kidney function |
| Do NPN compounds contain nitrogen? | Yes |
| Are NPN compounds proteins? | NO |
| Which NPN compounds are waste products? | urea, creatinine, uric acid, ammonia |
| Which NPN compounds are building blocks? | creatine, amino acids |
| What is urea the breakdown of? | protein |
| Where is urea formed and from what? | Formed in the liver, from ammonia |
| What does BUN stand for? | Blood, Urea, Nitrogen |
| What is the BUN test really for? | Urea, a kidney function test |
| What two things affect serum BUN? | protein in diet and catabolism; urine volume |
| What causes increased BUN? | There are Pre-renal, Renal and Post renal causes |
| What is a pre-renal cause of increased BUN? | dehydration- vomiting and diarrhea; cardiac insufficiency |
| What is a renal cause of increased BUN? | kidney disease - any type |
| What is a post renal cause of increased BUN? | urinary tract obstruction; kidney stones, enlarged prostate |
| What is azotemia? | increased NPNs in blood |
| What is the function of creatine and phosphocreatine? | high energy storage in the brain and muscle |
| What does creatine and phosphocreatine break down into? | creatinine |
| Where does creatine and phosphocreatine break down? | occurrs in the muscle |
| When is serum creatinine increased? | kidney disease; muscle destruction (severe or strenuous exercise) |
| What are two tests to assess kidney function? | BUN; Creatinine |
| What is uric acid the breakdown product of? | Nucleic acid ( also called prurines) |
| What are prurines (nucleic acids)? | Building blocks of DNA |
| Where is uric acid formed? | The liver |
| Which foods are high in prurines? | High protein foods (liver) |
| When is uric acid increased in the serum? | Gout |
| What is gout? | Uric acid crystals deposit in the joints |
| Where is ammonia made? | Made by bacteria in intestine |
| Failure of which organ would cause increased serum ammonia? | The liver |
| what are amino acids? | Building blocks of protein |
| what are the different plasma proteins? | Albumin, fibrinogen, alpha globulins, beta globulins, gamma globulins |
| Where are albumin, fibrinogen, alpha globulins and beta globulins made? | Made in the liver |
| Where are gamma globulins made? | in the cells of the reticuloendothelial system- lymph, spleen, bone marrow |
| What is an important functon of proteins? | transport of non soluble items such as metal ions, hormones and lipids |
| What is the function of albumin? | maintains normal blood volume |
| What is the function of fibrinogen? | maintains clotting of blood |
| What is the function of gamma globulins? | antibodies |
| What does TSP stand for? | Total serum protein |
| What does TSP measure? | sum of all albumin and all globulins |
| What causes increased TSP? | multiple myeloma, dehydration |
| What causes decreased TSP? | nephrotic syndrome/ kidney disease; liver disease- production of protein is decreased |
| What does A/G ratio stand for? | albumin divided by globulin |
| What is a normal A/G ratio result? | 1.0 - 2.5 |
| In which diseases is the A/G ratio decreased? | liver disease, kidney disease |
| What is electrophoresis? | used to seperate proteins into specific fractions by the movement of electrically charged particles in an electric field |
| What does NPN stand for? | Non protein nitrogen containing compounds |