`alpha ` - 1 antitrypsin (AAT) protein is used to treat which disease ?

Options

A. Dwarfism
B. CJD
C. both(1)and(2)
D. Emphysema

Answer

### Step-by-Step Solution:

1. **Understanding Alpha-1 Antitrypsin (AAT)**:
- Alpha-1 antitrypsin is a protein produced by the liver that protects the lungs and other tissues from damage caused by enzymes released by inflammatory cells.

2. **Identifying the Disease**:
- The question asks which disease is treated with AAT. The options provided include trophism, CJD (Creutzfeldt-Jakob Disease), both first and second, and emphysema.

3. **Analyzing the Options**:
- Trophism is not a disease treated with AAT.
- CJD is a neurodegenerative disease and is not related to AAT.
- The option "both first and second" is not applicable as neither trophism nor CJD is treated with AAT.
- Emphysema, however, is a chronic lung condition that can be exacerbated by the deficiency of AAT.

4. **Linking AAT to Emphysema**:
- AAT deficiency leads to unchecked activity of enzymes that can damage lung tissue, resulting in conditions such as emphysema. This is a chronic condition characterized by the destruction of the air sacs in the lungs, leading to breathing difficulties.

5. **Conclusion**:
- Therefore, the correct answer to the question is that alpha-1 antitrypsin (AAT) protein is used to treat emphysema.

### Final Answer:
Alpha-1 antitrypsin (AAT) protein is used to treat emphysema.