Enzyme streptokinase obtained from bacteria Streptococcus is used clinically as

Options

A. Surfactant in case of atelectasis
B. Clot buster in case of myocardial infraction
C. α_1 ` -antitrypsin in case of emphysema
D. Humulin

Answer

**Step-by-Step Solution:**

1. **Identify the Enzyme and Its Source**: The enzyme in question is streptokinase, which is obtained from the bacteria Streptococcus.

2. **Understand the Function of Streptokinase**: Streptokinase is known for its ability to dissolve blood clots. It acts as a thrombolytic agent, which means it helps in breaking down clots that have formed in the blood vessels.

3. **Clinical Application**: Streptokinase is primarily used in clinical settings for treating conditions such as myocardial infarction (heart attack). In this case, it helps to dissolve the fibrin matrix of the blood clots that obstruct blood flow to the heart.

4. **Evaluate the Options**:
- Option A: Surfactant in case of atelectasis – Incorrect, as surfactants are used to reduce surface tension in the lungs, not for clot dissolution.
- Option B: Clotbuster in case of myocardial infarction – Correct, as streptokinase is used to dissolve clots in heart attack situations.
- Option C: Alpha 1 antitrypsin in case of emphysema – Incorrect, as alpha 1 antitrypsin is a protein that protects the lungs, not related to clot dissolution.
- Option D: Humulin – Incorrect, as Humulin is a form of insulin, used for diabetes management, not for clot treatment.

5. **Conclusion**: Based on the information and evaluation of the options, the correct answer is **Option B: Clotbuster in case of myocardial infarction**.

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