00:00 / 00:00
Pharmacology and pharmaceutical therapeutics
Antimetabolites: Sulfonamides and trimethoprim
Cell wall synthesis inhibitors: Cephalosporins
Cell wall synthesis inhibitors: Penicillins
DNA synthesis inhibitors: Fluoroquinolones
DNA synthesis inhibitors: Metronidazole
Mechanisms of antibiotic resistance
Miscellaneous cell wall synthesis inhibitors
Miscellaneous protein synthesis inhibitors
Protein synthesis inhibitors: Aminoglycosides
Protein synthesis inhibitors: Tetracyclines
0 / 21 complete
acyclovir/famciclovir/valacyclovir p. 198
Anti-herpes medications are a group of antiviral agents that treat herpes infections including herpes simplex virus, or HSV, but they can also treat other viral infections like varicella zoster virus, or VZV, and cytomegalovirus, or CMV.
They act by inhibiting viral DNA synthesis and thus, inhibiting viral proliferation.
Alright, now let’s start with HSV, which infects skin and mucosal epithelial cells.
There are two types of HSV, HSV1 and HSV2.
Generally speaking, HSV1 tends to cause infections “above the waist” mostly involving the lips, or labia, which is referred to as herpes labialis, and the mouth and the gingiva, which is called gingivostomatitis.
HSV can also pass from a mother to a baby usually when the baby passes through the infected maternal vaginal secretions and can cause severe neonatal infections.
The typical presentation of a herpes infection is clusters of small, painful, fluid-filled blisters, that ooze and ulcerate. They eventually heal after a few weeks.
However, HSV also infects the nearby sensory neurons, which aren’t destroyed, but instead, they become a permanent home for the herpes virus. This is referred to as the latent phase of the infection and is typically asymptomatic.
From time to time, the herpes virus from the sensory neurons make a few viral copies of itself which can get released and infect the epithelial cells.
Alright, now let’s move on to varicella zoster virus. VZV causes a primary infection called varicella or chickenpox, which is characterized by a rash on the scalp, face, and trunk that contains macules, papules, vesicles, and scabs at the same time.
Herpes medications are antiviral agents used to treat herpes infection. They mainly work by interfering with DNA replication of Herpes simplex viruses. Commonly prescribed herpes medications include acyclovir, cidofovir, foscarnet, and valacyclovir. Side effects include nephrotoxicity, electrolyte imbalances, headaches, hallucinations, and seizures.
Copyright © 2023 Elsevier, its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Cookies are used by this site.
USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.