Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Anti-infective Drugs for Systemic Use (Insert Dari) EO 003.01 Part 23 AFAMS Lesson Overview (Insert Dari) Antibacterials for Systemic Use • Bacteria - characteristics - what is a pathogen? • Classes of antibiotics: - Tetracyclines - Amphenicols - Beta-lactams - Sufonamides - Macrolides - Aminoglycosides - Fluoroquinolones - Other antibiotics Insert Dari Antimycotics for Systemic Use • Fungi -characteristics • Antimycotics AFAMS Lesson Overview (Insert Dari) Antivirals for Systemic Use • Viruses • Types of antivirals Insert Dari Immune Sera and Immunoglobulins AFAMS What I need to know as a pharmacy technician (Insert Dari) In this lecture we will cover the drugs listed in the ANA Formulary which are classified according to the ATC system under (J) Anti-infectives for Systemic Use Insert Dari For each of these medications/classes students must obtain an understanding of: (1) Mechanism of Action (2) Indications (Uses) (3) Efficacy (4) Side Effects AFAMS Infections (Insert Dari) An infection is the invasion of the human body by a disease causing organism such as: (1) (2) (3) (4) Insert Dari Bacteria Virus Fungi Parasite Note: Antiparasitics will be covered in another lecture. AFAMS Anti-bacterials for Systemic Use (Insert Dari) AFAMS What are bacteria? (Insert Dari) Insert Dari • Single celled organisms • Very small • Need a microscope to see • Can be found on most materials and surfaces • Billions on and in your body right now - can be harmful (cause infection) - can be helpful This E. coli helps you digest food. Streptococcus can cause strep throat. AFAMS What do they look like? (Insert Dari) Three basic shapes (1) Rod shaped called bacilli (2) Round shaped called cocci (3) Spiral shaped Insert Dari Some exist as single cells, others cluster together Cluster of cocci Bacilli Cocci Spiral AFAMS Bacteria are ALIVE! • They reproduce (make more of themselves). • They have some of the same components as human cells: (1) Nucleoid (similar to nucleus) (2) Ribosomes to produce protein (3) Cytoplasm • And some unique components: (1) Cell wall (2) Capsule (3) Flagella (4) Pili Insert Dari AFAMS (Insert Dari) Insert Dari Insert Dari Insert Dari Insert Dari Insert Dari Insert Dari Insert Dari Insert Dari Insert Dari AFAMS Characteristics of Bacteria (Insert Dari) Cell Wall A rigid layer made up of peptidoglycan. Insert Dari Insert Dari Insert Dari Insert Dari Cells can be gram positive or negative. Gram negative cells have an outer layer which protects the cell wall. Insert Dari Insert Dari Insert Dari Insert Dari AFAMS Characteristics of Bacteria Continued (Insert Dari) Anaerobic vs. Aerobic Insert Dari Aerobic – require oxygen Anaerobic – can function without oxygen Cell secretions Many bacteria secrete enzymes that make their living environment more favorable. AFAMS How do bacteria reproduce? (Insert Dari) • Grow in number not in size Insert Dari • Make copies of themselves by dividing in half AFAMS How do bacteria obtain nutrients? (Insert Dari) • Some make their own food from sunlight—like plants. • Some are scavengers and share the environment around them. Example: The bacteria in your stomach are now eating what you ate for breakfast. •Some are warriors (pathogens), they attack other living things in order to obtain nutrients. Example: The bacteria on your face can attack the skin causing infection. Insert Dari Photosynthetic bacteria (Insert Dari) Harmless bacteria on the stomach lining (Insert Dari) A pathogen (InsertAFAMS Dari) How does a pathogen enter the body? (Insert Dari) Contact with people who are sick: • Direct (physical contact) • Indirect - airborne (through coughing/aspirating). - body secretions - insect bites Insert Dari Food, water, or other surfaces that are contaminated AFAMS Insert Dari Insert Dari Insert Dari Insert Dari Common Pathogens (Insert Dari) Insert Dari AFAMS What is an Antibacterial? (Insert Dari) Antibacterial drugs are substances that inhibit the growth of bacteria or kill bacteria. Insert Dari Bacteriostatic = inhibits growth Bactericidal = kills bacteria AFAMS ANA Formulary (Insert Dari) AFAMS AFAMS AFAMS Why are there so many different types of Antibacterials? (Insert Dari) When a doctor is wanting to treat a patient with an antibiotic there are many factors that they must consider, which affect their choice of antibiotic Insert Dari What are the characteristics of the pathogen? (1) Gram positive/negative – antibiotics that destroy the cell wall do not work well against gram negative bacteria. (2) Anaerobic/aerobic – antibiotics that target the use of oxygen will be ineffective again anaerobic bacteria. AFAMS Why are there so many different types of Antibacterials? (Insert Dari) (3) Patient characteristics Certain antibiotics cannot be used in children or pregnant women. Some patients may have allergies to certain classes of antibiotics. Insert Dari * These are just a few examples of factors to be taken into account, there are many more. AFAMS AFAMS Tetracyclines تيتراسيكلين Mechanism of Action • Act at the ribosome to inhibit bacterial protein synthesis. Indications (Uses) • Used to treat skin infections (i.e. bad acne). • Can be used to treat bronchitis. • Can be used to treat H.Pylori infection in the stomach which causes ulcers. :تاثيرات • سبب نهي وسنتيز پروتين بكتري ميشود Insert Dari AFAMS Tetracyclines تيتراسيكلين Side Effects – Photosensitivity – Yellow-gray-brown discoloration of teeth. – May cause diarrhea and upset stomach. Important points – Not recommended for children under 9 due to teeth discoloration. – Not recommended for women who are pregnant (can cause damage to the unborn baby). – Do not take antacids, laxatives or products containing mineral (i.e. iron and calcium) within 2 hours of taking Tetracycline عوارض جانبي حساسيت درمقابل شعاع- زر د – خاكستريخرمائي بي رنگ شدن دندان Insert DariInsert Dari نبايد براي اطفال زير سنين ساله وجنين درحال رشد9 توصيه گردد Insert Dari- AFAMS AFAMS Chloramphenicol کلورامفینیکول Mechanism of Action • Act at the ribosome to inhibit bacterial protein synthesis. Indication • This is an old antibiotic that is rarely used anymore due to concerns with toxicity. • Can be used to treat typhus. :تاثيرات • سبب نهي وسنتيز پروتين بكتري ميشود Insert Dari AFAMS Chloramphenicol کلورامفینیکول Side Effects • Bone marrow suppression which can =anemia. • Diarrhea • Feeling lightheaded (low blood pressure). Insert Dari Important Points • Many drug interactions exist with this medication. • Should not be used in very young babies. AFAMS AFAMS Penicillins پینیسیلین ها Mechanism of Action Inhibit bacterial cell wall synthesis exposing the less stable membrane which can lead to cell lysis. Insert Dari Depends on ability to cross bacterial cell wall: Gram positive bacteria have a cell wall that penicillin can cross. Gram negative bacteria have a membrane that acts as a barrier. Resistance to pennicillin –due to inactivation of the antibiotic by βlactamase, an enzyme secreted by the bacteria. Sometimes these antibiotics will be combined with a β-lactamase inhibitor such as tazobactam to increase activity of the antibiotic. AFAMS Penicillins Indications Common infections: پینیسیلین ها Insert Dari - pharyngitis - otitis media - minor skin infections. Serious infections: - infective endocarditis - meningitis - syphillis AFAMS Penicillins پینیسیلین ها Side Effects • may cause stomach upset • diarrhea • rash (if severe (hives) patient should see doctor right away as it may be anaphylaxis). Insert Dari Important Best to take on an empty stomach (if possible) – meaning 1 hr before or 2hrs after a meal. Some patients are allergic to penicillins (important to check allergies with the patient. AFAMS AFAMS Cephalosporins سیفالوسپورین ها Mechanism of Action Same as penicillins - inhibit bacterial cell wall synthesis exposing the less stable membrane which can lead to cell lysis. Insert Dari Indications Used in many different types of infections: • Sinusitis • Pharyngitis • Otitis media • Skin infections • Urinary tract infections AFAMS Cephalosporins سیفالوسپورین ها Side Effects • Diarrhea • Upset stomach • Increased sensitivity to sun. Insert Dari Includes • Cephalexin • Cefazolin • Ceftriaxone • Cefixime AFAMS Carbapenems کارباپینم ها Imipenem/Cilastin Insert Dari Mechanism of Action Imipenem – same as beta lactams. Cilastin – prevents imipenem from being broken down in the body. Indications Many infections (generally of a more serious nature) • lower respiratory tract • urinary tract, • intra-abdominal, • gynecologic, • bone and joint, • skin • endocarditis AFAMS Carbapenems کارباپینم ها Side Effects • Diarrhea • Upset stomach • Rare: Severe rash, seizures Insert Dari AFAMS AFAMS Sulfonamides سلفاميدها Mechanism of Action Interferes with synthesis of folate which is essential for the production of amino acids which form proteins. Insert Dari Trimethoprim – interferes with the production of folate. Indications Used to treat many different types of infections • urinary tract infections • respiratory infections (in patients with HIV) • prostatitis AFAMS Sulfonamides سلفاميدها Side Effects • Diarrhea • Upset stomach • Rash, can be minor or in rare cases very severe. Insert Dari Important Point Patients may be allergic to sulfonamides, it is important to check allergies with the patient. AFAMS AFAMS Macrolides ماکرولید ها Mechanism of Action Interferes with protein synthesis in the bacteria. Insert Dari Indications • sinusitis • pneumonia • chlamydia Side Effects • diarrhea • upset stomach AFAMS AFAMS Aminoglycosides امینوگالیکوزید ها Mechanism of Action Interferes with protein synthesis in the bacteria. Insert Dari Synergistic effect with betalactams, because beta-lactams break down the cell wall allowing the aminoglycosides to enter the cell. Indications Used for more severe infections: •septicemia, •respiratory tract infections, complicated urinary tract infections •complicated intra-abdominal infections •osteomyelitis (bone infection) AFAMS Aminoglycosides امینوگالیکوزید ها Side Effects • problems with hearing (deafness). • kidney problems. • rash Insert Dari Important Points • Administered by IV AFAMS AFAMS Fluoroquinolones فولروکینولون ها Mechanism of Action Interfere with the replication of bacterial DNA, thus preventing cell replication. Insert Dari Indications • Respiratory tract infections • Urinary tract infections • Prostatitis • Infectious diarrhea Side Effects • Diarrhea • Nausea/upset stomach • Tendon ruptures have been reported. AFAMS Fluoroquinolones فولروکینولون ها Important Points • Not for use in pregnant women or children. Insert Dari AFAMS AFAMS Vancomycin وانکومایسین Mechanism of Action Inhibits bacterial cell wall synthesis. Insert Dari Indications (Use) • For methicillin resistant infections • For life threatening C.Diff infections. Side Effects • red-man syndrome if infused too fast • Ringing in the ears. • Can cause kidney problems Important Points Administered intravenously Requires laboratory monitoring of drug levels to achieve effect. AFAMS Fosfomycin (Insert Dari) Mechanism of Action Prevents the synthesis of the bacterial cell wall. Insert Dari Indications (Uses) Used in complicated urinary tract infections. Side Effects • Upset stomach • Diarrhea Important Points Administered orally AFAMS Linezolid (Insert Dari) Mechanism of Action Prevents bacterial protein synthesis. Insert Dari Indications (Use) Generally used to treat infections which are resistant to vancomycin. Side Effects • Diarrhea • Upset stomach • Signs of low blood sugar AFAMS Antimycotics for Systemic Use (Insert Dari) AFAMS AFAMS Mycosis (Insert Dari) Mycosis – a fungal infection. Insert Dari Inhalation of fungal spores or localized colonization of the skin may initiate persistent infections; therefore, mycoses often start in the lungs or on the skin. Fungus - any of a group of unicellular, multicellular, or spore-producing organisms feeding on organic matter. This includes mold and yeast. AFAMS Fungal infection of the nails (tinea pedis) (Insert Dari) Severe fungal infection of the skin (Insert Dari) AFAMS AFAMS Mechanism of Action Interferes with the formation of the cell membrane. Fluconazole (Insert Dari) Insert Dari Indications (Use) Used to treat yeast infections. Side Effects Generally well tolerated Mild side effects include: • headache • diarrhea • upset stomach Important Points Many drug interactions exist. AFAMS Nystatin (Insert Dari) Mechanism of Action Degrades the cell wall. Insert Dari Indications (Use) Also used to treat yeast infections, generally of the mouth. Side Effects • Upset stomach • Diarrhea Important Points Patients should swish the solution around in their mouth for at least 60 seconds before swallowing. AFAMS Anti-virals for Systemic Use (Insert Dari) AFAMS Viruses (Insert Dari) A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to bacteria. Insert Dari Viruses are responsible for causing a wide variety of illnesses from the ‘common cold’ to the human immunodeficiency virus (HIV). AFAMS Viral Replication (Insert Dari) Viral populations do not grow through cell division. Insert Dari Instead, they use the machinery and metabolism of a host cell to produce multiple copies of themselves. They do this by having viral genetic material copied in the host cell. AFAMS AFAMS Antiviral Drugs: Acyclovir (Insert Dari) Mechanism of Action Insert Dari Prevents replication of the Herpes Simplex Virus by disrupting the replication of genetic material. Indications (Uses) Used to treat Herpes Simplex infections • shingles • cold sores • genital herpes AFAMS Antiviral Drugs: (Insert Dari) Side Effects Insert Dari Generally well tolerated in patients. Rare but severe side effects include: - kidney problems - neurotoxicity AFAMS Other Antiviral Drugs ادويه ضد ويروس Mechanism of Action Inhibit viral DNA replication. Insert Dari Indications (Use) Lamivudine and Entecavir– HIV and Hepatitis B Ritinavir – Respiratory Simplex Virus (RSV) and Hepatitis C AFAMS Other Antiviral Drugs ادويه ضد ويروس Side Effects Insert Dari Lamivudine – headache, diarrhea, low energy levels, dizziness, muscle pain and disruption of sleep. Entecavir – liver problems, blood in the urine, upset stomach and dizziness. Ritinavir – skin irritation, hair loss, diarrhea, disruption of sleep and loss of appetite. AFAMS Immune Sera and Immunoglobulins (Insert Dari) AFAMS AFAMS These are blood products that are usually not controlled by the pharmacy department. Insert Dari Hepatitis B Immune globulin Given to patients who have been exposed to contaminated blood or blood products (i.e. needle prick injury) to prevent them from getting hepatitis B. Anti-tetanus Immune globulin Given to patients who have possibly been exposed to tetanus and have not been previously vaccinated. AFAMS Questions? (Insert Dari) AFAMS In-class Assignment (Insert Dari) This assignment will consist of 7 questions which are to be completed individually. Once complete the instructor will review the answers with the class. Insert Dari AFAMS 1. A human cell has all of the following components in common with bacterial cells EXCEPT for? (Insert Dari) A) B) C) D) Ribosomes Cytoplasm Cell wall Cell membrane Insert Dari AFAMS 1. Answer: A human cell has all of the following components in common with bacterial cells EXCEPT for? (Insert Dari) A) B) C) D) Ribosomes Cytoplasm Cell wall Cell membrane Insert Dari AFAMS 2.Which of the following are key characteristics of bacteria? (Insert Dari) A) Gram positive/negative B) Aerobic/anaerobic C) Secrete enzymes and other substances D) All of the above Insert Dari AFAMS 2.Which of the following are key characteristics of bacteria? (Insert Dari) A) Gram positive/negative B) Aerobic/anaerobic C) Secrete enzymes and other substances D) All of the above Insert Dari AFAMS 3. True of False: A physician can just pick any antibiotic at random to treat an infection. (Insert Dari) AFAMS 3. Answer: True of False: A physician can just pick any antibiotic at random to treat an infection. (Insert Dari) Answer: False, a doctor must consider various factors regarding the pathogen such as: gram postive/negative, aerobic anaerobic etc. (Insert Dari) AFAMS 4. Match the following antibiotics with their correct class? (Insert Dari) A) B) C) D) Amoxicillin Sulfamethoxazole/Trimethoprim Azithromycin Gentamicin 1) 2) 3) 4) Aminoglycoside Sulfonamide Macrolide Pennicillin Insert Dari AFAMS 4. Answer: Match the following antibiotics with their correct class? (Insert Dari) Insert Dari A) Amoxicillin – (4) Pennicillin B) Sulfamethoxazole/Trimethoprim (2) Sulfonamide C) Azithromycin (3) Macrolide D) Gentamicin (1) Aminglycoside AFAMS 5. Match the following antibiotics with their mechanism of action (each mechanism can be used more than once). (Insert Dari) A) Pennicillin Insert Dari B) Gentamicin C) Vancomycin D) Ciprofloxacin 1) Interfere with protein synthesis 2) Interfere with cell wall synthesis 3) Interfere with DNA replication AFAMS 5. Answer: Match the following antibiotics with their mechanism of action (each mechanism can be used more than once). (Insert Dari) Insert Dari A) Pennicillin (2) interferes with cell wall synthesis B) Gentamicin (1) interfere with protein synthesis C) Vancomycin (2) interferes with cell wall synthesis D) Ciprofloxacin (3) interferes with DNA replication AFAMS 6. Which of the following statements are NOT true? (Insert Dari) A) A virus is a small infectious agent. B) A virus can cause a variety of illnesses from the common cold to HIV. C) A virus can multiply on its own, outside of a host cell. D) Acyclovir is an antiviral used to treat shingles and other herpes infections. Insert Dari AFAMS 6. Answer: Which of the following statements are NOT true? (Insert Dari) A) A virus is a small infectious agent. B) A virus can cause a variety of illnesses from the common cold to HIV. C) A virus can multiply on its own, outside of a host cell. D) Acyclovir is an antiviral used to treat shingles and other herpes infections. Insert Dari AFAMS 7. Which of the following drugs are used to treat yeast infections? (Insert Dari) A) B) C) D) Ciprofloxacin Fluconazole Acyclovir Amoxicillin Insert Dari AFAMS 7. Which of the following drugs are used to treat yeast infections? (Insert Dari) A) B) C) D) Ciprofloxacin Fluconazole Acyclovir Amoxicillin Insert Dari AFAMS