Viruses rely on host cell processes for replication, so antiviral agents target specific steps in the viral life cycle. Acyclovir inhibits herpes virus DNA synthesis and is used to treat herpes infections. Antiretrovirals target HIV replication through four classes: nucleoside/nucleotide reverse transcriptase inhibitors, protease inhibitors, non-nucleoside reverse transcriptase inhibitors, and fusion inhibitors. Amphotericin B and azoles such as fluconazole and itraconazole are broad-spectrum antifungals used to treat serious fungal infections. They work by binding to ergosterol in fungal cell membranes or inhibiting fungal enzyme production.
The presentation gives an in-depth review of the Anti-fungal drugs used to treat various acute and chronic fungal infections along with their uses and MOA.
The presentation gives an in-depth review of the Anti-fungal drugs used to treat various acute and chronic fungal infections along with their uses and MOA.
Description on types of fungal organisms with differences between bacteria and fungi. A note on useful and harmful fungi. Brief insight on Antifungal classification, mechanism of actions and pharmacological profile with drug of choices for various fungal infections.
Medicinal Chemistry and Pharmacology of Antifungal Agents and how to take care from fungal infections. Useful Course study material for the undergraduate , postgraduate and aspirants of Pharmacy , Pharmacology and Medicinal Chemistry.
The all the content in this profile is completed by the teachers, students as well as other health care peoples.
thank you, all the respected peoples, for giving the information to complete this presentation.
this information is free to use by anyone.
Description on types of fungal organisms with differences between bacteria and fungi. A note on useful and harmful fungi. Brief insight on Antifungal classification, mechanism of actions and pharmacological profile with drug of choices for various fungal infections.
Medicinal Chemistry and Pharmacology of Antifungal Agents and how to take care from fungal infections. Useful Course study material for the undergraduate , postgraduate and aspirants of Pharmacy , Pharmacology and Medicinal Chemistry.
The all the content in this profile is completed by the teachers, students as well as other health care peoples.
thank you, all the respected peoples, for giving the information to complete this presentation.
this information is free to use by anyone.
Introduction
Mycobacteria are intrinsically resistant to most antibiotics & they grow slowly compared with other bacteria.
Thus antibiotics that are most active against growing cells are relatively ineffective.
Mycobacterial cells can also be dormant & thus completely resistant to many drugs or killed only very slowly.
Antitubercular drugs for Second Year MBBS Pharmacology students. It contains recent recall questions from NEET PG 2021 and AIIMS 2020 exams, highlighting the importance of the topic. Don't miss the summary at the end.
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
MANAGEMENT OF ATRIOVENTRICULAR CONDUCTION BLOCK.pdfJim Jacob Roy
Cardiac conduction defects can occur due to various causes.
Atrioventricular conduction blocks ( AV blocks ) are classified into 3 types.
This document describes the acute management of AV block.
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Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
2. Introduction
Viruses are obligate intracellular parasites; their replication depends
primarily on synthetic processes of the host cell.
Viral replication consists of several steps.
Antiviral agents can potentially target any of these steps.
3. Antiherpes Agents
Acyclovir
Acyclovir triphosphate inhibits viral DNA synthesis
Acyclovir is available in oral, intravenous, and topical formulations.
Clinical Uses: Acyclovir is effective for treatment of primary
infection and recurrences of herpes.
Adverse Reactions: Nausea, diarrhea, and headache have occasionally
been reported.
IV infusion may be associated with renal insufficiency or neurologic
toxicity.
4. Antiretroviral Agents
Antiretroviral drugs are synthetic agents that have antiviral activity
against HIV and are used in the management of HIV infection.
There are four different classes of antiretroviral agents commercially
available currently: Nucleoside reverse transcriptase inhibitors
(NRTI), Protease inhibitors, Nonnucleoside reverse transcriptase
inhibitors (NNRTI), and Fusion inhibitors.
7. Other Antiviral Agents
Amantadine, Rimantadine
Amantadine/ rimantadine inhibit uncoating of the viral RNA of
influenza A within infected host cells, thus preventing its replication.
Both agents are effective in the prevention of influenza a virus
infection in high-risk individuals.
Additionally, both drugs can be used in the treatment of influenza A,
effectively reducing the duration of symptoms when administered
within 48 hours after their onset.
The most common side effects are gastrointestinal intolerance and
central nervous system effects (eg, nervousness, difficulty in
concentrating, lightheadedness).
8. Antifungal agents
The antifungal drugs fall into two groups: antifungal antibiotics and
synthetic antifungals.
antifungal antibiotics
◦ Amphotericin B
◦ Nystatin
◦ Griseofulvin
9. synthetic antifungals
◦ Flucytosine
◦ Azoles
◦ The imidazoles consist of ketoconazole, miconazole, and
clotrimazole.
◦ The triazoles include itraconazole and fluconazole.
10. Antifungal antibiotics
Amphotericin B
Amphotericin B is poorly absorbed from the gastrointestinal tract.
Oral amphotericin B is thus effective only on fungi within the lumen
of the tract.
The drug is widely distributed in tissues, but only 2-3% of the blood
level is reached in CSF, thus occasionally necessitating intrathecal
therapy for certain types of fungal meningitis.
11. Mechanism of Action: Amphotericin B binds to ergosterol (a cell
membrane sterol) and alters the permeability of the cell by forming
amphotericin B-associated pores in the cell membrane.
The pore allows the leakage of intracellular ions and
macromolecules, eventually leading to cell death.
Adverse Effects: The toxicity of amphotericin B which may occur
immediately or delayed include fever, chills, muscle spasms,
vomiting, headache, hypotension (related to infusion), renal damage
associated with decreased renal perfusion (a reversible) and renal
tubular injury (irreversible).
liver damage, and anemia occurs infrequently.
12. Antifungal Activity: Amphotericin B is a broad-spectrum antifungal
agent.
It has activity against yeasts including; Candida albicans and
Cryptococcus neoformans; molds, Aspergillus fumigatus.
Clinical Use: Amphotericin B remains the drug of choice for nearly
all life-threatening mycotic infections.
Used as the initial induction regimen for serious fungal infections
(immunosuppressed patients, severe fungal pneumonia, and
cryptococcal meningitis with altered mental status).
13. Nystatin
Nystatin has similar structure with amphotericin B and has the same
pore-forming mechanism of action.
It is too toxic for systemic use and is only used topically. It is not
absorbed from skin, mucous membranes, or the gastrointestinal tract.
Nystatin is active against most Candida species and is most
commonly used for suppression of local candidal infections.
Nystatin is used in the treatment of oropharyngeal thrush, vaginal
candidiasis, and intertriginous candidal infections.
14. Griseofulvin
Griseofulvin is a fungistatic and used in the treatment of
dermatophytosis.
Absorption is improved when it is given with fatty foods.
Griseofulvin is deposited in newly forming skin where it binds to
keratin, protecting the skin from new infection.
It must be administered for 2-6 weeks for skin and hair infections to
allow the replacement of infected keratin by the resistant structures.
Nail infections may require therapy for months to allow regrowth of
the new protected nail and is often followed by relapse.
15. Adverse effects: include an allergic syndrome much like serum
sickness, hepatitis, and drug interactions with warfarin and
phenobarbital.
Griseofulvin has been largely replaced by newer antifungal
medications such as itraconazole and terbinafine.
16. Synthetic Antifungal Agents
Flucytosine
Flucytosine is related to fluorouracil.
Its spectrum of action is much narrower than that of amphotericin B.
It is well absorbed orally. It is poorly protein-bound and penetrates
well into all body fluid compartments including the CSF.
It is eliminated by glomerular filtration. Toxicity is more likely to
occur in AIDS patients and in the presence of renal insufficiency.
Flucytosine inhibit DNA and RNA synthesis.
17. Clinical Use: Active against Cryptococcus neoformans, some
Candida species, and the dematiaceous molds that cause
chromoblastomycosis.
Clinical use at present is confined to combination therapy, either with
amphotericin B for cryptococcal meningitis or with itraconazole for
chromoblastomycosis.
18. Adverse Effects: The adverse effects of flucytosine result from
metabolism (intestinal flora).
Bone marrow toxicity with anemia, leukopenia, and
thrombocytopenia are the most common adverse effects, with
derangement of liver enzymes occurring less frequently.
19. Azoles
Azoles are synthetic compounds that can be classified as imidazoles
and triazoles.
The imidazoles consist of ketoconazole, miconazole, and
clotrimazole.
The triazoles include itraconazole and fluconazole.
The antifungal activity of azole drugs results from the reduction of
ergosterol synthesis by inhibition of fungal cytochrome P450
enzymes.
20. The specificity of azole drugs results from their greater affinity for
fungal than for human cytochrome P450 enzymes.
Imidazoles exhibit a lesser degree of specificity than the triazoles,
accounting for their higher incidence of drug interactions and side
effects.
21. Azoles are active against many Candida species, and Aspergillus
infections (itraconazole).
Adverse Effects: The azoles are relatively nontoxic. The most
common adverse reaction is minor gastrointestinal upset.
Most azoles cause abnormalities in liver enzymes and, very rarely,
clinical hepatitis.
22. Imidazoles
Ketoconazole
Ketoconazole is less selective for fungal P450 than are the
fluconazole and itraconazole (inhibit mammalian cytochrome P450
enzymes).
Clinical use: it has limited use because of the drug interactions,
endocrine side effects, and of its narrow therapeutic range.
Oral formulation that is best absorbed at a low gastric pH.
Ketoconazole is used in treatment of mucocutaneous candidiasis and
nonmeningeal coccidioidomycosis.
23. Adverse effects:
First, ketoconazole inhibition of human cytochrome P450 enzymes
interferes with biosynthesis of adrenal and gonadal steroid hormones,
producing significant endocrine effects such as gynecomastia,
infertility, and menstrual irregularities.
Second, the interaction with P450 enzymes can alter the metabolism
of other drugs, leading to enhance toxicity of those agents
24. Clotrimazole and miconazole
Clotrimazole and miconazole are available over-the-counter and are
often used for vulvovaginal candidiasis.
Oral clotrimazole troches are available for treatment of oral thrush
and are a pleasant-tasting alternative to nystatin.
In cream form, both agents are useful for dermatophytic infections,
including tinea corporis, tinea pedis, and tinea cruris.
Absorption is negligible, and adverse effects are rare.
25. Triazoles
Itraconazole
Itraconazole is available in an oral formulation and its absorption is
increased by food and by low gastric pH.
Undergoes extensive hepatic metabolism.
Itraconazole is the azole of choice in the treatment of
dermatophytoses and onychomycosis and is the only agent with
significant activity against Aspergillus species.
26. Fluconazole
Fluconazole has good cerebrospinal fluid penetration.
Can be given by the intravenous or the oral route.
Fluconazole has the least effect on hepatic microsomal enzymes.
Thus, has a wide therapeutic window.
Fluconazole is the azole of choice in the treatment and secondary
prophylaxis of cryptococcal meningitis.
It is also effective for mucocutaneous candidiasis.