Shit list Flashcards
Karyorrhexis
DNA laddering, endonucleases cleave every 180bp in internucleosomal regions. Indicates apoptosis 222
Apaf-1
Induces apoptosis; inhibited by Bcl-2 [overexpression of Bcl-2 prevents apoptosis = follicular lymphoma (t;14:18)222
CD95
= Fas-R (on T-cells for negative selection)222
Liquefactive necrosis
Lysosomal enzymes; brain, abscess, pancreas.223
Casceous
Coagulative + liquefactive223
Fat necrosis
Lipase; fat cells lose nucleus 223
Fibrinoid necrosis
Immune (vasculitis), malignant HTN, pre-exlampsia 223
Cells of acute inflammation
Neurophils, eosinophils, antibodies Outcome = recover, abscess, chronic inflammation 225
Cells of chronic inflammation
Mononuclear (macrophages and lymphocytes), fibroblasts. Associated with BV formation, fibrosis, granulomas. Outcome = scarring or amyloidosis225
Granulomas
Th1 –> IFN-g –> Macro –> TNF-a –> form and maintain granuloma 230
Dystrophic calcification
Abscess, fat necrosis, infarcts, thrombi, schistosomiasis, Monkenberg, congenital CMV and toxo (TORCH - cerebral calcifications), psammoma bodies. In abnormal (diseased) tissues226
Metastatic calcification
MC in kidney, lung, and gastric mucosa; because increase pH. In normal (healthy) tissues226
Leukocyte extravasation
227
Wound healing mediators
TGF-a - Epithelial and fibroblast GF; induce and maintain granulomas229
Causes of Granulomas
230
ESR
Increased: Pregnancy Decreased: HF and hypofibrinogenemia 230
Dialysis-related amyloidosis
B2 microglobulin; can present as carpal tunnel 231
Amyloidosis
AA = any inflammatory diseases (also FMF) Organ-spec: also meduallry CA thyroid cia calcitonin; AP via prolactin; Atria via ANP231
Desmoplasia
Fibrous233
K:L
3:1233
Hamartoma
Disorganized tissue in correct place234
Choristoma
Normal tissue in foreign place234
SM tumours
Benign = leiomyoma Malignant = leiomyosarcoma 234
Cachexia
IL-1, IL-6, TNF-a, IFN-g234
235-238
235-238
235-238
DO THEM AGAIN235-238
Psammoma
PSMM: Papillary thyroid Serous cystadenoma Mesothelioma Meningioma239
Carcinomas traveling hematogenously
Renal cell CA HCC Follicular thyroid ChorioCA234
Lineweaver-Burk
242
Lipoteichoic acid
Gram + Induces TNF-a and IL-1118
Outer membrane
Gram - Site of LPS: Lipid A induces TNF-a and IL-1; O = Ag118
Periplasm
Site of beta-lactamases118
Capsule
Used for vaccines Polysaccharide (except bacillus anthracis = d-glutamate) K Ag (except salmonella = Vi; s.pyogenes = M)118
Bacterial taxonomy
119
No cell wall
MycoPLASMA, ureaPLASMA Contain sterols119
Gram stain limitations
120
Stains
120
Special cultures
121
Obligate IC
122
Facultative IC
“Salamon Needs bruce, My Little France Legionaire Yersinia”122
Encapsulated Bacteria
122
Urease +
122
Catalase +
122
Exotoxins
124
Endotoxin
125
Gram +
127
Gram -
135
Zoonotic Bacteria
142
Virus trends
157
DNA Viruses
158
HSV-6
Roseola Infantum; 6th disease158
Parvo B19
Erythema infectiosum; 5th disease (slap cheek) 158
HPV warts
1, 2, 6, 11158
HPV cancer
16, 18, 31, 33158
EBV
Infects B-cells via CD-21 Downey cells = reactive CD8+ T-lymphocytes159
RNA viruses
161
HIV
Env: • GP 120 = attachment to CD4+; crosses placenta (FP neonate) • GP41 = fusion and entry Gag: p24 = capsid protein Pol: RT, asp protease, integrase [no proofreading –> drift] CCR5 = macrophages; early infection CXCR4 = T cells; late infection168
A. Influenza
EMOP Epiglottitis can be in immunized kids Vaccine conjugated to diptheria toxin or another protein136
Pseudomonas
PSEUDDOm Ecthyma gangrenosum DM, burns, hot tub, CF137
Toxo Rx
Pyrimethamine + sulfadiazine (or clindamycin if sulfa allergy)150
Systemic micoses
Histoplasma = filled macrophage - Mississipi + Ohio Blastomycosis = broad based - Ohio Coccioidiomycosis = spherule with endospores - Cali Paracocciodiodomycosis = captains wheel - Latin America145
Gonorrhea and Chlamydia Rx
Ghono: ceftriaxone (3rd gen cephalosporin) Chlam: azithromycin or doxycyclin
Anthrax
Has D-glutamate capsule = poly PEPTIDE132
Post-viral pneumonia
A. Pneumo, S. aureus, H. influenza
Corynebacterium
Has intracellular pyrophosphate granules, stain blue and red Also + ELEK test130
Black eschar
Cutaneous anthrax or mucor sp.
Neutropenia
Increased risk of Gram -ve infections135
A. Aeruginosa
Exotoxin A (EF-2) contributes to ecthyma gangrenosum Also pyocyanin (ROS), elastase, PL-C137
Mycoplasma
PM is single PL layer righ in cholesterol No cell wall144
A. Botulinum
Heat LABILE Adults: 3Ds = diplopia, dystonia, dysphagia131
Hemolytic anemia
Pyruvate kinase deficiency = chronic hemolysis G6PD Deficiency = episodic
Legionella
Pneumonia (lobar and unilateral, severe) GI effects (watery diarrhea) CNS (confusion, HA) Increased in smokers/chronic lung disease High fever with relative bradycardia See PMNs but no bacteria (FI)137
IgA protease vs. Protein A
Protein A = s. aureus = bind Fc of IgG IgA Protease = SHiN = cleave IgA to allow binding to mucus membranes128+122
Rubella
Downward rash, post-auricular LAD TOGAvirus
Salmonella and yersinia
Can proliferate in LNs
A. Diff
Rx = metro (mild; systemic abs) or vanco (severe; static); recurrent or limited systemic = fidaxomycin 131
A. Perfringens
Alpha-toxin = lecithinase = Plase-C131
Mycoplasma
No cell wall, so must use ribosome inhibitors like macrolides or tetracyclins
Parvo B19
Aplastic anemia in sickle, fifth disease (erythema infectiosum), hydrops fetalis Only ssDNA, non-enveloped
Rabies
Bullet shaped Negri bodies Purkinje cells of cerebellum; hippocampal neurons Killed vaccine Binds Ach-R –> retrograde up Bat, raccoon, skunk Fever/malaise –> agitation, photophobia, hydrophobia , hypersalivation –>paralysis ascending and flaccid and coma –> death Spasms cause hydrophobia, aerophobia (fear of flying) and dysphagia 165
A. Aeruginosa
Hot tubs and burns! PSEUDDO = pneumonia, sepsis, externa, UTI, DM, drugs, Osteomyelitis Ecthyma Gangrenosum137
A. Viridans
Makes dextrans from glucose Binds to damaged valves, at fibrin-platelet aggregates on the damamged valve129
LVG
PainFUL Inguinal LAD (buboes)
Mitochondrial DNA
Synthesize mitochondrial things only: oxphos proteins, rRNA, tRNA68
GAS
Impetigo –> PSGN Pharyngitis –> PSGN and RHD PSGN = 1-5 weeks after RHD = 2-6 weeks after129