Comp Med No. 1 2012 Flashcards
What are the two most important cell types for bone homeostasis? What are their roles?
Osteoblast - bone formation
Osteoclast - bone resporption
Name the two estrogen receptors that have been cloned.
ER alpha and ER beta
What condition does the removal of estrogenic signaling by ovariectomy cause in both humans and rodents?
Obesity
Estrogen depletion results in what bone pathology?
Osteoporosis
Which of the following strains is a well-characterized model for RSV infection?
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b. <!--[endif]-->BALB/c
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c. <!--[endif]-->C3H
b. BALB/c
True/False. Toll-like receptors are mediators in the innate immune response and systemic inflammation.
True
True/False. Weight loss and a decreased inflammatory status were found as a result of voluntary exercise in male obese CD1 mice.
True
What analytical method is commonly used to distiguish lymphocytes expressing specific cell surface antigens?
Flow cytometry
What are two types of sweat glands?
Apocrine and eccrine sweat glands
What is an important role of apocrine sweat glands in hoofed animals?
They are the primary sweat glands for cooling in hoofed animals
Where are eccrine sweat glands located in rodents?
Eccrine sweat glands are located exclusively on the digits and footpads of the paws in rodents.
Transgenic mice with MMTV-TGFα are used to study what type of cancer?
Breast cancer
Serum sickness is a Type ___ hypersensitivity reaction.
a. I
b. II
c. III
d. IV
e. None of the above
c. III
Which of the following is NOT a factor that affects the severity of serum sickness in humans and animals?
a. Antigen size
b. Antigen valency
c. Antigen:antibody concentration ratio
d. Ability of immune complexes to fix complement factors
e. All of the above are factors that can affect the severity of serum sickness
e. All of the above are factors that can affect the severity of serum sickness
What is an established model of serum sickness in mice?
a. Repeated injection of bovine serum albumin or chicken egg albumin
b. One-time injection of bovine serum albumin or chicken egg albumin
c. Repeated transfusions with blood from a littermate mouse
d. Injections with serum from another mouse after pre-medication with dexamethasone
a. Repeated injection of bovine serum albumin or chicken egg albumin
Which of the following are examples of a type I hypersensitivity reaction?
- Atopy
- Thrombocytopenia
- Anaphylaxis
- Autoimmune hemolytic anemia
- Rheumatoid arthritis
- Chronic transplant rejection
- Serum sickness
Type 1 hypersensitivity reactions are commonly referred to as allergies & are mediated by IgE & IgG4
Atopy
Anaphylaxis
What are the mediators of type I hypersensitivity reactions?
IgE & IgG4
Which of the following are examples of a type II hypersensitivity reaction?
- Atopy
- Thrombocytopenia
- Anaphylaxis
- Autoimmune hemolytic anemia
- Rheumatoid arthritis
- Chronic transplant rejection
- Serum sickness
Type II hypersensitivity reactions are commonly referred to as cytotoxic/antibody-dependent reactions & are mediated by IgG & IgM & complement
Thrombocytopenia
Autoimmune hemolytic anemia
Which of the following are examples of a type III hypersensitivity reaction?
- Atopy
- Thrombocytopenia
- Anaphylaxis
- Autoimmune hemolytic anemia
- Rheumatoid arthritis
- Chronic transplant rejection
- Serum sickness
Type III hypersensitivity reactions are commonly referred to as immune complex disease and are mediated by IgG & complement.
Rheumatoid arthritis
Serum sickness
Which of the following are examples of a type IV hypersensitivity reaction?
- Atopy
- Thrombocytopenia
- Anaphylaxis
- Autoimmune hemolytic anemia
- Rheumatoid arthritis
- Chronic transplant rejection
- Serum sickness
- Contact dermatitis
Type IV hypersensitivity reactions are commonly referred to as Delayed-type hypersensitivity (DTH), cell-mediated immune memory response and are mediated by T cells.
Chronic transplant rejection
Contact dermatitis
Which of the following are examples of a type V hypersensitivity reaction?
- Atopy
- Thrombocytopenia
- Anaphylaxis
- Autoimmune hemolytic anemia
- Rheumatoid arthritis
- Chronic transplant rejection
- Serum sickness
- Contact dermatitis
- Myasthenia Gravis
Type V hypersensitivity reactions are commonly referred to as autoimmune disease and are mediated by IgG, IgM, & complement.
Myasthenia gravis
True/False: All models of excisional wound healing are based on the same principles: 1-diabetic murine model; 2-hair removal; 3-full-thickness dorsum skin excision; 4-semi-occlusive dressing application; 5-macroscopic and microscopic measurements of wound closure.
True
According to a recent study, depilation by using what technique gave the worst hair density and skin damage results throughout the 15 days of experiment.
a. Straight razor
b. Depilatory cream
c. Cold wax
a. Straight razor
T or F. The most common pathologic lesion produced by polytetrafluoroethylene (PTFE) toxicosis in birds is severe, extensive, necrotizing and hemorrhagic pneumonitis and edema.
True
T or F. Polytetrafluoroethylene (PTFE) toxicosis in humans is not seen as frequently as in birds because of anatomic differences.
True
What the hell is Gallus domesticus?
Chicken
PCNA is a nuclear marker commonly used to identify what kind of cells?
Proliferating
TUNEL assays are commonly used to identify what kind of cells?
Apoptotic cells
True/False: SRV is one of several persistent viruses targeted for elimination in SPF (special pathogen free) colony development in NHP.
True
True/False: Clinical and pathological manifestation of SRV infection range from subclinical (carrier state) to lymph proliferative disease
True
Anemia and leukopenias associated with reduced progenitor cell proliferation is accompanied with what following condition(s);
a. Simian parvovirus of macaques
b. Human parvovirus B19 infection
c. Simian and Human immunodeficiency syndrome
d. Feline retroviral infection
e. All above
e. All above
Name the stages of embryo development from oocyte to blastocyst.
Ooctye à one cell embryo à 2-cell embryo à 4 cell embryo à 8 cell embryo à morula à blastocyst
List several assisted reproductive techniques (ARTs).
Superovulation, in vitro fertilization, sperm collection, ovarian transplant, ICSI, embryo transfer
What is an alternative term for ‘vitrification’?
“fast freezing” or “flash freezing”