**Question:** Which of the following is a wrong association -

A. Aminoglycoside antibiotics inhibit protein synthesis
B. Non-steroidal anti-inflammatory drugs (NSAIDs) have analgesic and anti-inflammatory effects
C. Glucocorticoids are immunosuppressive and anti-inflammatory agents
D. Diuretics increase blood pressure

**Correct Answer:** D. Diuretics increase blood pressure

**Core Concept:**
Diuretics are a class of medications that primarily work by increasing urine production and reducing the amount of fluid in the body, resulting in a decrease in blood volume. This leads to the following effects:

1. **Increased Glomerular Filtration Rate (GFR):** Diuretics increase the rate at which blood is filtered in the kidneys, leading to a decrease in blood volume and a compensatory response to maintain blood pressure.
2. **Blood Volume Decrease:** As diuretics reduce blood volume, they can lead to a decrease in blood pressure, which is the opposite of what is commonly believed.

**Why the Correct Answer is Right:**
Diuretics primarily act on the kidneys to increase urine production and reduce blood volume. While this can lead to a decrease in blood pressure initially, the body's response to maintain blood pressure results in an overall increase in blood pressure. This is the main reason why diuretics are often used to treat high blood pressure, despite initially causing a decrease.

**Why Each Wrong Option is Incorrect:**
A. Aminoglycoside antibiotics inhibit protein synthesis: Aminoglycoside antibiotics are antibiotics targeting bacterial cell wall synthesis, not blood pressure regulation.
B. Non-steroidal anti-inflammatory drugs (NSAIDs) have analgesic and anti-inflammatory effects: NSAIDs primarily target inflammation and pain relief, not blood pressure.
C. Glucocorticoids are immunosuppressive and anti-inflammatory agents: Glucocorticoids have immunosuppressive and anti-inflammatory effects, not blood pressure effects.

**Clinical Pearl:**
Understanding the mechanisms of action of medications is crucial in interpreting their clinical effects. While the initial response to diuretics may decrease blood pressure, the body's compensatory mechanisms lead to an overall increase in blood pressure, making diuretics an effective treatment option for hypertension.