Hemolymphatic system

Question 1

SCID

Answer 1

Arabs- foals have mutations in DNA-PKcs no B or T cells
Dogs- Mutations in DNA-PKcs and cytokine receptor gene mutations as well as signal transduction pathways inhibited

Question 2

Causes of lymphoid necrosis

Answer 2

-Parvoviruses
-Bovine virus diarrhea virus
-Porcine circovirus-associated diseases
-Canine distemper virus

Question 3

Parvovirus

Answer 3

Affinity for rapidly dividing cells like intestinal crypt epithelium and hemomyelolymphatic cells. Leads to immunosuppression and secondary infections

Question 4

Causes of lymphoid hyperplasia

Answer 4

-Antigenic stimulation
-EIA
-Gamma herpesvirus
-Theilaria
-Porcine repro and respiratory syndrome

Question 5

Lymphadenopathy causes

Answer 5

-Hyperplasia
-Lymphadenitis
-Neoplasia
-Edema

Question 6

Suppurative lymphadenitis causes

Answer 6

-Pyogenic bacteria: Strept. equi, S, porcinus, T. pyogenes, Corynebacterium pseudotuberculosis

Question 7

Pyogranulomatous lymphadenitis

Answer 7

Rhodocoosu equi

Question 8

Pyogranulomatous lymphadenitis

Answer 8

R. equi

Question 9

Granulomatous lymphadenitis

Answer 9

M. avium and bovis
Fungi

Question 10

Lymphangitis

Answer 10

Usually secondary to LN
Paratuberculosis in cattle and FIP in cats

Question 11

Rhodococcus equi

Answer 11

-Primary respiratory infection
-Half develop enteric disease
-Lymphadenitis of bronchial/ mediastinal, mesenteric, and colonic LN

Question 12

Lymphosarcoma in cats

Answer 12

Commonly associated with Feline Leukemia virus and FIV is a risk factor