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microbiology infections and intoxation

by: UNT_Scientist

microbiology infections and intoxation Biol 2041

Marketplace > University of North Texas > Biology > Biol 2041 > microbiology infections and intoxation

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About this Document

This covers a lot of stuff. all diagrams are included
Daniel Kunz
Class Notes
intoxiacation, infection, Microbiology, kunz
25 ?




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This 9 page Class Notes was uploaded by UNT_Scientist on Saturday April 30, 2016. The Class Notes belongs to Biol 2041 at University of North Texas taught by Daniel Kunz in Winter 2016. Since its upload, it has received 29 views. For similar materials see Microbiology in Biology at University of North Texas.


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Date Created: 04/30/16
● Food borne infections   ○   ○ Effects of the organism   ■ Salmonellosis   ● Fig 25.9   ● S. typhimurium  ● Human to animal   ■ Typhoid   ● Caused by ​almonella typhi   ● Human to human   ■ Shigellosis   ● Bacillary dysentery   ● S. dysenteriae   ○ Fig 25.8  ■ Cholera   ● similar to shigellosis   ■ Other cases   ● E. coli  ○ Traveler's diarrhea  ○ STEC   ■ Shiga Toxin producing E. coli o157.H7  ● 2.3 % of cattle may carry   ● Campylobacter   ○ Causes simulate to shigellosis caused by chicken   ● Clostridium difficile  ○ Nosocomial    ○ Intoxication   ■   ■ Outbreak cycle   ● Food containing protein is cooked (bacterial is usually killed)  ● Then food is contaminated by worker with staphylococci on hands  (competing bacteria have been eliminated)   ● Food is left at room temperature. Organisms incubate in food long  enough to form and release toxins (reheating will elimate  staphylococci but not toxin)   ● Food containing toxin is eaten   ● in 1­6 hours, staphylococcal intoxication occurs   ○ Helicobacter pylori   ■ Treated with antibiotics.   ■ Causes stomach ulcer  ● Viral digestive disease   ○ Mumps   ○ Hepatitis   ■ Hepatitis A virus (HAV)   ● Transmitted from food handlers  ■ compare HAV vs HBV  ● Blood transfusions   ■ others   ● HCV  ● HDV  ● HEV  ○ Rotavirus   ■ Most frequent viral gastroenteritis  ○ Noroviruses   ■ 1st in Norwalk, Ohio 1968   ■ Cruise liners   ● Protozoal digestive disease   ○ Grid issues   ■ Giardiasis   ○ Amoebiasis   ■ Entamoeba   ○ Cryptosporidium   ● Fungal digestive disease   ○ Aspergillus flavus   ● Respiratory system chapter 24   ○ Know the anatomy upper respiratory   ■ Above the chest   ○ Lower respiratory   ■ Below the neck   ○ Normal flora   ■ Diphtheroids   ■ Staphylococcus   ■ Streptococcus   ■ H.influenzae   ● Gram negative rod   ■ N. Meningitis   ○ Bacteria infection of the upper respiratory system   ■ Pharyngitis  ● Streptococcal phylogenes  ● penicillin still drug of choice  ● Causes strep throat   ● Estrogenic   ● Lysogenized   ■ Diphtheria   ● Irregular shaped gram positive rode   ■ Otitis media (inner ear)   ● Stretamonmia   ● Staph   ● Many gram positive organisms cause inner ear infections   ■ Tonsillitis/ sinusitis   ● Many of the same causative agents as Otitis media   ○ Viral infections of the upper respiratory   ■ Common cold (50% rhinoviruses)   ■ Adenoviruses (corona issues (SARS))  ● Lower respiratory infections (larynx, trachea, lungs)   ○ Structure   ■   ○ Bacteria   ■ Pertussis (whooping cough)  ● Bordetella pertussis   ○ Gram negative coccobacillus   ● Has a capsule inhibiting phagocytosis   ● Tracheal cytotoxin of cell wall damaged to ciliates cells   ■ Tuberculosis   ● Mycobacterium tuberculosis   ○ Acid fast rod   ○ Transmitted from human to him an   ○ Gram negative rod  ●   ■ The first blank the bacteria will grow in  macrophages    ○   ●   ●   ● Treatment of tuberculosis   ○ Prolonged treatment with multiple antibiotics   ■ Isoniazid   ● Targets mycolic acid synthesis   ■ Rifampin   ■ Aminoglycosides   ● Example   ○ Streptomycin   ■ Fluoroquinolones   ● Example   ○ Cipro  ○ Vaccines   ■ BCG   ● Live   ● AvirulenM.bovis   ○ Not widely used in the United States   ○ There are problems  ○ Concerns   ■ That there is a tuberculosis ​arrie on plane  and other public areas   ■ AIDS and Tuberculosis go hand in hand   ● The presence of AIDS means and increase  of Tuberculosis   ○ Diagnosis   ■ Tuberculin skin test screening   ● Positive reaction means current or previous  infection   ● Followed by X­ray or CT, Acid­fast staining  of sputum culturing bacteria   ■ Pneumonia   ● Streptococcus pneumoniae  ○ resists phagocytosis   ○ Resistance to penicillin is becoming a problem   ■ Alternative   ● Cipro  ○ Antigen can be detected in urine in 15 min   ● Mycoplasma pneumoniearesistas   ○ Pleomorphic   ○ Wall less bacteria   ● Atypical pneumonia   ● Walking pneumonia   ● Common in children and young adults   ■ Psittacosis   ● Chlamydia psittacosis  ○ Viral   ■ Pneumonia   ● Viral pneumonia as a complicated of influenza, measuls, and  chickenpox  ● Viral etiology suspected if no cause determined   ● Respiratory syncytial virus   ○ Common in infants   ○ Causes cell fusion   ■ Influenza   ● Flu   ○ Antigenic drift   ■ Mutation in genes encoding for h or n spikes   ■ Probably due to genetic recombination between  different strains infecting the same cell   ■ Table 24.1   ● Chills, fever, headache, muscle aches   ● Usually but not always vomitting and diarrhea   ○ Not found symptoms of common cold   ● Treatment   ○ Tamiflu  ■ Inhibits neuraminidase­viral exit   ● vaccine for high risk individuals   ● Virus itself   ○ Why the problem with vaccine   ○ There are two parts that are import to attachment and  exiting on the host cell    ■ N spike   ■ H spike  ○ Fungal/protozoal    ■ Pneumonia   ■ Causative agent   ● Pneumocystis jirovecii   ○ Used to be protozoan now it is a fungus   ■ Reservoir   ● Unknown   ○ Possibly humans or soil  ■ Symptoms   ● Pneumonia   ■ Diagnosis   ● Microscopy   ● Disease of the cardiovascular system   ○ System   ■ Heart and blood cessels   ■ Lymphatic system   ■ Sepsis/septicemia   ● Infectious agents in the blood   ○ Puerperal sepsis   ■ S.pyogenes   ■ Infection of the uterus   ● Childbirth­­­>peritonitis­­­­>septicemia   ■ Bacterial endocarditis   ● Inflammation of inner myocadial tissue   ● Staph and strep   ○ Treat with penicillins   ■ Rheumatic fever  ● S.pyogenes   ● Immune complete   ○ Anti­strep and staph  ●  arthic heart damage due to build up of anti­step immune  complexes   ■ Anthrax  ● B.anthracis   ○ Wools others disease   ● Animal eats spore or enter via abrasion   ○ Septicemia occurs  ● Zoonoses   ■ Gangrene   ● C.perfringens   ● Strict anaerobes   ● Ischemia   ○ Loss of blood supply   ● Responds to penicillin   ○ Hyperbaric chambers used as well to increase oxygen flow   ■ Systemic disease is used by bites and Socrates   ● Plague   ○ Yersinia pestis   ■ Black Death   ■ Zoonoses   ○ Normal host = rat ­­­­bit by rat flea­­­>rat or human   ● Lyme disease   ○ Borrelia burgdorferi   ■ A spirochete   ○ Tick borne   ■ Ixodes   ○ Rash flu­like symptoms, irregular heartbeat, paralysis,  meningitis, encephalitis (syphilis­like)  ■ First symptoms    ● bulls eye rash   ■ Second phase   ● irregular heart beat, encephalitis   ■ Third phase    ● arthritis   ○ Treat with antibiotics   ■ Viral diseases   ● infectious mononucleosis   ○ Epstein Barr virus (herpes type 4)  ○ 90% of children pin contact   ■ Asymptomatic   ○ When infection delayed until 15­25 years old much more  symptomatic   ■ 15% of college students   ○ Transmission   ■ Direct contact like kissing   ● Cytomegalovirus (CMV)   ○ Human herpesvirus 5 (body fluids)  ○ Infected cell   ■ Cytomegalovirus   ● Enlarged oracvity eyes and others   ■ Protozoan   ● American trypansomiasis   ○ Changes disease   ■ Trypanosomiasis Cruze   ○ Southern texas, Mexico, Central America and parts of  South America  ○ normal reservoirs    


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