An increase in LDH-5 enzyme is seen in the following except:
**Core Concept**
The question is about lactate dehydrogenase (LDH) isoenzymes, specifically LDH-5, which is an enzyme involved in glucose metabolism. LDH isoenzymes are tissue-specific and can be used as markers for tissue damage.
**Why the Correct Answer is Right**
LDH-5 is predominantly found in skeletal muscle and liver. An increase in LDH-5 suggests damage or disease affecting these tissues.
**Why Each Wrong Option is Incorrect**
**Option A:** This option might be related to liver disease, which could increase LDH-5.
**Option B:** Similarly, this could be related to muscle damage, increasing LDH-5.
**Option C:** This might be an option unrelated to liver or muscle, potentially the correct answer.
**Clinical Pearl / High-Yield Fact**
LDH isoenzymes can be used to diagnose and monitor various conditions, including myocardial infarction and liver disease.
**Correct Answer:** D. Skeletal muscle damage is associated with an increase in LDH-5, thus the answer choice that does not belong with the others in the context of increasing LDH-5 is not explicitly provided, but typically, an exception would be a condition not directly related to liver or skeletal muscle.