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86 Cards in this Set
- Front
- Back
- 3rd side (hint)
What is your diagnosis? Give the different types |
Photodermatitis 1.primary (preformed or metabolically derived photodynamic agent) 2.hepatogenous (phyloerythrin) 3.aberrant pigment synthesis (porphyria) 4.idiopathic |
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Source of photodynamic agent :Give an exemple of one plant and one chemical |
Back (Definition) |
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Give your diagnosis and a predisposed breed |
Alopecia areata Eringer cow |
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DD of alopecia areata |
Follicular dysplasia |
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What is your diag. Give the histo |
Chorioptic mange Chorioptes bovis 0,3-0,5mm Histo : hypereosino perivascular to interstitial dermatitis with eosino epidermal microabcess and paraK hyperK |
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What are the possible agent for bovine dermatophytosis ? |
T. Verrucosum (T. Mentagrophytes, T equinum, M gypseum, M canis, M nanum) |
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Diagnosis and ethiology |
Dermatophytosis M. Nanum (M canis, M gypseum, M persicolor, T mentagrophytes, T verrucosum, T tonsurans) |
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About treatment for dermatophytosis in cow with topical enilconazole: what can you say about the following concentration: 4 & 5%, 3%, 1-2% |
4-5%: success but ADR in 40 and 55% 3% : success rate 95% and no ADR 1-2% : success rate 25 and 50% —> 3% once a day 3 days |
Enilconazole = imidazole that inhibits biosynthesis of ergosterol and disruptif permeability of cell wall |
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In cow T verrucosum immunity is only cell mediated: R or W |
Wrong : cell mediated and humoral |
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Causative agent in impetigo on cow |
Staphylococcus aureus |
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Diagnosis - agent - What is it on the right photo |
Actinomycosis Actinomyces bovis (oral cavity commensal); occasionally A. Israelii Sulfur granules |
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DD of actinomycosis in cow (ethiologic agent) |
Actinobacillus lignieresii Trueperella pyogenes Corynebacterium pseudoT |
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Cytologic exam of actinomycosis: What do you see |
Supputative to pyogranulomatous Gram + filament long or V,Y,T form |
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Histo of actinomycosis in cow and pigs |
Nodular to diffuse suppurative to pyogranulomatous dermatitis and panniculitis. Tissus granules are coated with splendore hoeppli material and contain gram + filament |
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Diag |
Aspergillosis |
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Give the 4 main lices of bovine |
Sucking lice -Linognathus vituli -Solenopotes capillatus -Haematopinus eurysternus Biting lice -Damalinia bovis |
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Common lice of ovine |
Linognathus ovillus, stenopsis, pedalis Damalinia ovis, caprae |
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Common porcine lice |
Haematopinus suis |
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Caprine lice |
Linognathus stenopsis and africanus Damalinia limbartus, crassipes and caprae |
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What parasitic disease is reportable ? |
Mange in cattle (sarcoptes, psoroptes, chorioptes) In sheep (psoroptes ovis) |
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Give the 4 main flies problem and associated species in cow |
Back (Definition) |
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Diagnosis and 2 ethiologic agents |
Staphylococcus aureus Staphylococcus hyicus (less commonly) |
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Histological exam |
Nodular to diffuse suppurative or pyogranulomatous dermatitis and panniculitis with intracellular bacteria. Lymphangitis often not seen |
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What is your diagnosis |
Dermatophilosis Dermatophilus congolensis Zoonotic |
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Diagnosis |
Actinobacillosis Same histo than actinomycosis but with gram - coccobacilli |
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What parasitic disease ? |
Psoroptic mange Psoroptes ovis (bovis) |
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Name the demodex species of cattle |
Demodex bovis (D ghanensis, D tauri but no disease associated) |
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What is the intermediate hosts of stephanofilariasis ? |
Fly are intermediate hosts for the nematode - hematobia -musca |
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About foot and mouth disease: name the ethiologic agent and the species that can be infected |
Aphtovirus (A, O, C, SAT1, SAT2, SAT3 & Asia 1) Sheep, goat, swine, cattle |
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Morbidity and mortality are very high in foot and mouth disease: T or F? |
F : morbidity 50-100 % Mortality < 5% |
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Lumpy skin disease : agent and vector |
Capripoxvirus Insects especiallu stomoxys calcitrans |
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Most common form of epidermolysis bullosa in cattle |
Junctional (autoso R) In Simmental it is simplex and auto D |
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Give 2 common bacteria in intertrigo in cattle |
Staphylococcus and fusobacterium necrophorum |
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What are the characterisitic of moist and dry gangrene ? |
Moist = impaired venous and lymphatic drainage + infection
Dry= impaired arterial supply |
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Give the 4 subgroups of Bovine Papillomavirus and the BPV présent in each group |
Papillomavirus Xi: BPV 3, 4, 6, 9, 10, 11, 12 Delta : BPV 1, 2, 13, 14 Epsilon : BPV 5, 8 Dioxy : BPV 7 |
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How many oncogenes are known in Bovine Papillomavirus and briefly describe their role |
E1 to E8 : early genes; replication and transformation/interaction with genome L1 & L2 : late genes; capsid protein |
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How many oncogenes are known in Bovine Papillomavirus and briefly describe their role |
E1 to E8 : early genes; replication and transformation/interaction with genome L1 & L2 : late genes; capsid protein |
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What are the most important oncongene in equine sarcoids? |
E2, E5, E6, E7 |
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Dermatophilus congolensis can cause strawbery foot rote in sheep: T or F |
True |
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Give the result (positive or negative) of the nitrate réduction test for the caseous lymphadenitis in small ruminants, cattle and horses |
Small rt : nitrate neg Cattle : nitrate + and - Horse : nitrate + |
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Pathogenesis of photosensitization |
1.UV (320-400) absorbed by photodynamic agents in the skin 2.release of energy 3.production of reactive oxygen molecules (free radicals) 4.mast cell degranulation + proinfla mediators (IL1, TNFa...) 5.damage cell membrane, nucleic acid and prot |
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Give the susceptible parasites for ivermectin, doramectin, moxidectin, eprinomectin (sarcoptes, chorioptes, psoroptes) |
Ivermectin (sc) and doramectin (sc or im) (0.2mg/kg sc every 2-3w): all Moxidectine 0.2mg/kg pour on: psoroptes, chorioptes Eprinomectin 0.5mg/kg pour on: chorioptes, sarcoptes |
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Name 2 psoroptic mange in goat |
Psoroptes bovis Psoroptes cuniculi |
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What demodex can be found in caprine |
Demodex caprae |
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What is this parasite on a goat |
Parelaphostrongylus tenuis |
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Most probable viral dermatitis |
Orf = contagions viral postulat dermatitis = contagions echtyma Parapoxvirus |
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Morbidity and mortality of contagious viral pustular dermatitis (orf) in goat |
100% 1% |
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Goat 1.Diagnosis 2.Histo |
Orf Eosinophilic intracytoplasmic inclusion body |
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No pruritus and no pain What is your diagnosis |
Psoriasiform dermatitis |
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This is a papilloma on a goat Does it usually regress spontaneously? |
No and in some case can transform into SCC |
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Diagnosis |
Orf |
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What is the major vector for bleu tongue orbivirus? |
Culicoides spp |
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What is it? What si the infectious agent ? |
Dermatophilosis Dermatophilus congolensis |
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Highly pruritic What is your main differential ? |
Psoroptic mange Psoroptes ovis Occasionally psoroptes cuniculi |
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Give the Different forms of foot/interdigital infections in cattle and sheep |
1. Digital dermatitis (mortellaro disease, foot warts...) - treponema 2. Interdigital dermatitis - dichelobacter nodosus 3. Interdigital necrobacillosis (foot rot) - fusobacterium & Prevotella 4. Strawberry foot (sheep) - dermatophilus & fusobacterium / orf |
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Your diagnosis |
Orf |
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Name the disease and the cause |
Orf Parapoxvirus ovis |
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First area affected in the orf |
Non wooled areas |
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Pathognomonic sign of the blue tongue disease (ovine catarrhal fever) |
Dark red to purple band in the skin just above the coronet |
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Your most probable diag It is pruritic |
Atopic dermatitis |
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Disease and pathogen |
Fleece rot Pseudomonas spp |
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Name the two types of porphyria in cattle |
Congénital eryhtropoietic porphyria Bovine protoporphyria |
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In ovine, what papilloma can become a SCC ? |
Facial fibropapillomas |
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Give the name of this syndrome and the mutation |
Tricho-dento-osseus-like syndrome in a Brown Swiss calf DLX3 mutation |
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Disease and breed associated |
Alopecia areata Eringer cow |
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On alopecia areata of Eringer cow there are only T lymphocyte in the lesion : T or F |
F also CD20 + lymphocyte (B lymphocyte) |
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What causes bovine besnoitiosis ? |
Besnoitia besnoiti : obligate intracellular apicomplexan protozoan parasite |
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Morbidity and mortality of Besnoitiosis |
Morbidity 80% Mortality 10% |
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How many layers does a cyst of besnoitiosis has ? |
3 |
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Adult onset of diffuse alopecia in two cows has been described. Histo showing follicular distortion and atrophy, melanin clumping. Give two breeds of the cows |
Black angus Black brangus cross |
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Risks factors for hock lesions in cow include : Time of the year, type of stalls, nature of bedding and stage of lactation. T or F : in addition cattle with dirtier hocks are less affected. |
True |
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Give the three treponema phylogroups identified in lesions from cattle, sheep, goat and elk digital dermatitis, pig skin affection and hock open wound in cattle |
T medium phylogroup T phagedenis phylogroup T pedis phylogroup |
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This is a case of alopecia with hypo para thyroidism What parameters are characteristic of this disease when you take a blood sample ?(3 parameters) What do you see at the histo? (3 éléments) |
Hypocalcemia, low parathyroid hormon (PTH), normal magnesium concentration Histo= severe epidermal hyperplasia, orthoK hyperK, diffuse follicular atrophy |
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Name the endocrinopathy associated with this |
Progressive alopecia associated with hypoparathyroidism |
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What is the infections agent of the lumpy skin disease in cattle ? Give 2 diagnostic methods |
Lumpy virus (capripox virus) PCR and LAMP (loop mediated isothermal amplification) - Se and Sp are good according to recent study and can identify population at risk because détection in apparently healthy individual |
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What is your diagnosis |
Haematobia irritans |
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Give a mutation identified in a sheep with dermatosparaxis |
ADAMTS2 Normally this enzyme process procollagen I |
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What is the main pathogen responsible for Contagious ovine digital dermatitis ? |
Treponema |
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Most probable Diagnosis |
Ichthyosis fetalis |
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Give the two types of congenital forms of ichthyosis in cattle |
1)Ichthyosis fetalis = harlequin fetus : non viable - chianina, holstein friesian, brown swiss... 2)ichthyosis congenita : milder form - chianina, holstein friesian, jersey... |
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Mutation of ichthyosis fetalis in chianina cattle |
ABCA12 |
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What form of EB was described in churra lamb in 2015 ? |
Generalized severe junctional EB Auto recessive |
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Irritant contact dermatitis : macerated tissues are more susceptible to irritant T or F ? |
T : be careful when using shampoo or water : must dry properly after |
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Irritant contact dermatitis : macerated tissues are more susceptible to irritant T or F ? |
T : be careful when using shampoo or water : must dry properly after |
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What oral therapy can you give for irritant contact dermatitis ? |
Prednisolone and pentoxifylline (25mg/kg/12h) |
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During irritant contact dermatitis langerhans cells can go into the dermis and switch into macrophages : what elements are needed for this switch ? |
- fibroblast - E-cadherin - IL 10 |
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