Problem 13 - 43 Years JEE ADVANCED (1978-2020) + JEE MAIN Chapterwise & Topicwise Solved Papers Chemistry

Question

Aminoglycosides are usually used as: (a) antibiotic (b) analgesic (c) hypnotic (d) antifertility

Step-by-Step Solution

Answer

Aminoglycosides are used as antibiotics (option a).

Step 1: Understanding Aminoglycosides

Aminoglycosides are a class of antibiotics that are used to treat bacterial infections. They are known for their ability to inhibit bacterial protein synthesis, leading to the death of the bacteria. Aminoglycosides are often used to treat serious infections caused by Gram-negative bacteria.

Step 2: Analyzing the Options

We need to choose the correct function or application of aminoglycosides from the given options. - Option (a) antibiotic: Used to kill or inhibit bacteria. - Option (b) analgesic: Used for pain relief. - Option (c) hypnotic: Used to induce sleep or relaxation. - Option (d) antifertility: Used to prevent pregnancy.

Step 3: Selecting the Correct Option

From Step 1, we know that aminoglycosides are antibiotics. The only option that describes their primary function is option (a) antibiotic. The other options (b), (c), and (d) do not relate to the antibacterial function of aminoglycosides.

Key Concepts

Aminoglycosides

Aminoglycosides are a distinct class of antibiotics characterized by their unique chemical structure and mode of action. These drugs are particularly effective in treating severe infections caused by aerobic Gram-negative bacteria, such as

• Escherichia coli,
• Klebsiella pneumoniae,
• and Pseudomonas aeruginosa.

Aminoglycosides work by binding to the bacterial 30S ribosomal subunit. This binding interferes with protein synthesis, a critical process that bacteria need to grow and multiply.
This leads to misreading of genetic codes and ultimately results in bacterial death.
It's important to note that aminoglycosides are often used in clinical settings for conditions like urinary tract infections, sepsis, and respiratory infections, especially when other antibiotics are ineffective. However, due to potential side effects such as nephrotoxicity (kidney damage) and ototoxicity (hearing loss), their usage needs careful monitoring.

Antibiotics

Antibiotics are substances that destroy or inhibit the growth of bacteria. They play a crucial role in medicine by treating infections that could otherwise become life-threatening. Antibiotics can be classified based on their spectrum of activity:

• Broad-spectrum antibiotics, which affect a wide range of bacteria,
• and narrow-spectrum antibiotics, which target specific types of bacteria.

Aminoglycosides fall into the category of narrow-spectrum antibiotics, mainly aimed at Gram-negative bacteria.
This specificity makes them invaluable in cases where targeted action is crucial, preventing harm to beneficial bacteria that reside in the human body.
The rise of antibiotic resistance is a significant concern. It occurs when bacteria evolve mechanisms to survive antibiotic exposure, rendering treatments less effective. Proper use of antibiotics, including aminoglycosides, is essential to prevent this resistance and ensure these medicines remain effective in combating bacterial infections.

Bacterial Infections

Bacterial infections occur when harmful bacteria enter the body and multiply, overpowering the immune system's ability to fight them off. These infections can lead to a wide range of symptoms, from mild discomfort to severe systemic issues.
Common bacterial infections include:

• Strep throat,
• urinary tract infections (UTIs),
• and bacterial pneumonia.

The body's immune response typically works by engulfing and destroying invading bacteria, but sometimes the bacteria replicate too quickly for the immune system to handle.
This is where antibiotics become necessary, helping to control and eliminate the bacteria.
Rapid diagnosis and appropriate antibiotic treatment are essential in managing bacterial infections. Improper or delayed treatment can lead to complications or prolonged illness. It is also essential to complete the full course of prescribed antibiotics, as stopping treatment early can contribute to antibiotic resistance, making future infections harder to treat.