Ciprofloxacin mechanism of action - USMLE Forums
USMLE Forums Logo
USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
USMLE Articles
Go Back   USMLE Forums > USMLE Step 1 Forum

USMLE Step 1 Forum USMLE Step 1 Discussion Forum: Let's talk about anything related to USMLE Step 1 exam

Thread Tools Search this Thread Display Modes
Old 04-20-2010
FreakingOut's Avatar
USMLE Forums Scout
Steps History: Not yet
Posts: 34
Threads: 27
Thanked 20 Times in 12 Posts
Reputation: 30
Question Ciprofloxacin mechanism of action

A 30-year-old female presents to her primary care physician with complaints of frequency, urgency, and dysuria over the last twelve hours. Urinalysis reveals many leukocytes. She is treated with a three-day course of oral ciprofloxacin. What is the primary target of the antimicrobial action of ciprofloxacin?

A. Binding of the 30S subunit
B. Binding of the 50S subunit
C. Competitive inhibition of dihydrofolate reductase
D. Inhibition of DNA-dependent RNA polymerase
E. Inhibition of DNA gyrase
Reply With Quote Quick reply to this message

Old 04-20-2010
HouseWannabe's Avatar
USMLE Forums Addict
Steps History: 1 + CS
Posts: 120
Threads: 13
Thanked 147 Times in 45 Posts
Reputation: 157
Default Answer is E

Cirpo is classified as a broad-spectrum antibiotic under the Fluorochloroquine family. It acts by blocking DNA Gyrase= no cell division.
Reply With Quote Quick reply to this message
Old 04-20-2010
USMLE Forums Guru
Steps History: ---
Posts: 487
Threads: 69
Thanked 296 Times in 133 Posts
Reputation: 316

E. inhibition of DNA Gyrase..
Reply With Quote Quick reply to this message
Old 04-21-2010
USMLE Forums Veteran
Steps History: 1 + CK
Posts: 234
Threads: 63
Thanked 128 Times in 63 Posts
Reputation: 158

yes ans. is E . inhibiton of DNA gyrase
Reply With Quote Quick reply to this message


Pharmacology-, Step-1-Questions

Quick Reply

Register Now

In order to be able to post messages on the USMLE Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Medical School
Choose "---" if you don't want to tell. AMG for US & Canadian medical schools. IMG for all other medical schools.
USMLE Steps History
What steps finished! Example: 1+CK+CS+3 = Passed Step 1, Step 2 CK, Step 2 CS, and Step 3.

Choose "---" if you don't want to tell.

Favorite USMLE Books
What USMLE books you really think are useful. Leave blank if you don't want to tell.
Where you live. Leave blank if you don't want to tell.


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Nefazodone Hydorchloride Mechanism of Action? MLE-Love USMLE Step 1 Forum 3 03-13-2010 08:05 PM
Dexamethasone use in edema; mechanism of action hippocampus USMLE Step 1 Forum 1 01-13-2010 10:38 AM
Antibacterial antibiotics Mechanism of action rasheed USMLE Step 1 Bits & Pieces 2 01-08-2010 07:12 AM
First Aid's Clindamycin mechanism lemontea88 USMLE Step 1 Forum 3 01-07-2010 05:26 PM
Thiozolidinediones Mechanism of Action Ahmed-USMLE USMLE Step 1 Bits & Pieces 0 11-29-2009 05:18 PM

RSS Feed
Find Us on Facebook
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

USMLE® & other trade marks belong to their respective owners, read full disclaimer
USMLE Forums created under Creative Commons 3.0 License. (2009-2014)