JALAAS 2024

Submental blood collection in mice

Submental blood collection in mice

Modified submental technique is a viable non-terminal blood collection technique and is equivalent to the submandibular site in regards to stress for juvenile and neonatal mice and may be the better option if small amounts of blood are needed

Vein for submandibular blood collection in mice

facial vein

Vein for submental blood collection in mice

inferior labial vein

What is being represented by the X and O in A and B

A: X is blood draw site, O is the landmark for submandibular venipuncture

B: X is the blood draw site and O is the landmark for the submental blood draw site.

What is the picture representing?

Shows the gross pathology at 48 h after blood draw from the submental and submandibular locations in various age groups.

What is the picture representing?

Shows the histopathology at 48 h after blood draw from the submental and submandibular locations in various age groups.

Are there differences between strains and CO2 concentrations to induce loss of righting reflex?

Yes

Which rat strains have higher CO2 concentration requirements: Wistar, SD, Long-Evans

SD

Is there a possibility of pain occurring in rats before LORR occurs when CO2 euthanasia is occuring? 

Yes

Is ethiqa XR appropriate for use in rabbits? What dose? And how long does it work for?

Ethiqa XR (dosed at 0.15 mg/kg SQ, once) provides therapeutic plasma concentrations of buprenorphine for 72 hr in rabbits, with minimal side effects and no sex differences. EXR achieved therapeutic plasma concentrations (>0.1ng/mL)  by 4h and maintained for 72h. FP achieved therapeutic plasma levels (>0.5ng/mL) by 8h but dropped below threshold between 24-48h time points

Which of the following facial action units is assessed to indicate pain in the NC3Rs Rabbit Grimace Scale but not in the NC3Rs Mouse Grimace Scale?

1. Orbital tightening

2. Cheek flattening

3. Ear position

4. Whisker changes

5. Nose bulge

2. cheek flattening (also occurs in grimace scoring of rats)

What is this device, and how is it used for environmental management, and how does it compare to classic sentinal programs for monitoring?

• New method for rodent environmental health monitoring programs

• Best to use 1-month contact Reemay filter in a 10-minute tumbler for the highest % of viral and overall pathogens

• 1-month contact Reemay filter in a 60-minute tumbler for the highest % of bacterial and parasitic pathogens

A / B submental location, veins are inferior labial and facial veins

C. linguofacial, submandibular, facial veins

Red is blood collection, circle is the anatomical location

What could this restraint technique be used for?

Weighing mice as well as using for access to saphenous vein for blood collection and injections.

What vein appears be least stressful and reduce impact on post collection blood volume in mice?

Facial vein < saphenous < tail (best)

Does Chlamydia muridarum cause clinical disease in mice?

No, it typically causes asymptomatic infections except in immunodeficient mice

What is Chlamydia muridarum in mice a model for?

•Translational model for human C trachomatis

What is the caustative agent that causes renal papilomas and bronchopneumonia in STAT1KO mice?

Chlamydia muridarum

Question: Atropine may be ineffective in what species due to the enzyme atropinesterase?

1. Oryctolagus cuniculus

2. Macaca fascicularis

3. Cavia porcellus

4. Meriones unguiculatus

1. Oryctolagus cuniculus

2. Macaca fascicularis

3. Cavia porcellus

4. Meriones unguiculatus

Does SABER-B (sucrose acetate isobutyrate ER bupivacaine; Posimir) or Bupivacaine Meloxicam Polymer (BMP) have better analgesia regarding onset and longevity of effect in pigs?

SABER, onset was quick and provided pigs with 24 - 48 hours of analgesia

Is saliva cortisol comparable to blood cortisol in pigs?

Yes

The pig has a large population of what were initially considered ‘null’ cells, which lack expression of CD2, CD4, or CD8, but are known to express CD3, classifying them as which type of cells?

A) T cells

B) B cells

C) NK cells

D) IgG

A) T cells

B) B cells

C) NK cells

D) IgG
Answer:  A - The pig has a large population of what were initially considered ‘null’ cells, which lack expression of CD2, CD4, or CD8, but are known to express CD3, classifying them as T cells. The lymphoid population is largely comprised of γδ Τ cells and is found in large numbers in various tissues, especially mucosal sites (such as the uterus). These are also highly prominent in the newborn. γδ T cells from swine are similar to the ones described from ruminants. Expression of CD4 (T-helper) and CD8 (T-cytotoxic) is mutually exclusive in most species, but swine (similar to human and monkey) have a unique lymphocyte subset that expresses both CD4 and CD8.

What is a possible causative agent for endocarditis in immunosupressed pigs after xenotransplantation?

Mycoplasma hyorhinis-induced endocarditis in an immunosuppressed juvenile pig following allogeneic pulmonary valve (PV) transplantation. Commensal species in Upper respiratory tract of pigs

What are some possible antimicrobial drugs that can be used for treatment of Mycoplasma hyorhinis in immunosuppressed pigs?

Either enrofloxacin or combination azithromycin and doxycycline treatment for suspected cases of MHR in immunosuppressed swine

What pathogen can cause this gross and histologic presentation in immunosuppressed swine recently xenotransplanted with mitral valve?

Mycoplasma hyorhinis, will see vegetative lesions on the heart valves.

There are several potential mechanisms for cross-species infections. Which answer is not correct about transmission of an animal pathogen?

A) An organism could be infectious to both the animal donor and the human recipient (example: T. gondii).

B) Animal viruses that are similar to human viruses, even if not currently known to be zoonotic, could infect humans with this novel access to human cells (examples: animal herpesviruses; cytomegalovirus (CMV) and Epstein–Barr virus (EBV)).

C) A nonpathogenic animal microbe could cause disease after xenotransplantation due to hyper-immunity.

D) A viral recombination between animal and human viruses leading to a virulent recombinant strain.

Answer: C) A nonpathogenic animal microbe could cause disease after xenotransplantation due to immunosuppression.

Reference/Notes: Laboratory Animal Medicine, 3rd edition. ACLAM, eds, Fox, et al, 2015, pg 1373 Chapter 29

Question: According to the AWA, what is false with regards to the correct use of this piece of equipment by a research institution? 

A) The tag number shall be correctly listed in the records of purchase, acquisition, disposal, or sale of the dog or cat it identifies and to which it is affixed. 

B) Unweaned puppies or kittens do not need tags while they are maintained as a litter with their dam in the same primary enclosure, provided the dam has been individually identified. 

C) When an animal dies or is euthanized, this tag shall be retained by a research facility until called for by an APHIS official or for a period of 3 years.  

D) No tag number shall be used to identify more than one animal or shall be reused within a 5-year period. 

E) This tag is not less than 1-1⁄4 inches in diameter. 

Answer: c. When an animal dies or is euthanized, this tag shall be retained by a research facility until called for by an APHIS official or for a period of 3 years. 

Answer is ONE year.

How often should the IACUC review CSF protocols for NHPs?

annual

What is a type of catheter used for serial collection of CSF for NHPs?

Serial collection of CSF may be accomplished through a chronically implanted cisternal catheter that is connected to a subcutaneous access port.

What is the CSF volume for adult macaque?

CSF volume in adult male rhesus macaques (8.0 to 10.6 kg) was 10 ± 0.06 mL

How often does Public Health Service Policy on Humane Care and Use of Laboratory Animals require an IACUC to conduct a complete review of ongoing activities? 

A) At least once every 3 years

B) At least once every year

C) At least once every 5 years

D) At least once every 6 months

A at least once every 3 years

Question: The pictured animal displays which of the following captive breeding behaviors?

1. Eusocial, one breeding queen with several non-reproductive workers participating in cooperative brood care        

2. Harem breeding, one male for every 4-6 females                                                                                             

3. Monogamous, one male, one female pairings                                                                

4. Promiscuous, females and males mate multiple times with multiple mates with no cooperative brood care

Answer: a. Eusocial, one breeding queen with several non-reproductive workers participating in cooperative brood care 

Question: All of the following are characteristics of the animal shown that make it a useful animal model EXCEPT: 

a. Sociable, cooperative behavior

b. Long life span

c. Resistance to cancer

d. Lack of pain-related responses to mechanical stimuli

Answer: d. Lack of pain-related responses to mechanical stimuli

 

References: 1) Laboratory Animal Medicine, 3rd edition, pp. 328-330; 2) The Laboratory Rabbit, Guinea Pig, Hamster, and Other Rodents, ACLAM, pp. 1069-1071; 3) JAALAS, Vol 53, No. 1, pp. 89-91.

Domain 3-Tertiary Species

What is being assesed here?

Vehicular vibration similar to what humans experience everyday on the spine.

What are they testing here and which picture us optimal for assessing it?

A/B are optimal for assessing vibrations associated with a vehicle

Question: Match the following species to the field of research for which it is used frequently.

1. Macaca nemestrina

2. Macaca arctoides

3. Macaca radiata

4. Macaca fascicularis

Balding

HIV research

Pharmaceutical research

Kyasanur Forest disease

1. Pig-tailed macaque

2. Stumptail macaque

3. Bonnet macaque

4. Crab-eating or cynomolgus

Balding - Macaca arctoides

HIV research: Macaca nemestrina

Pharmaceutical research: Macaca fascicularis

Kyasanur Forest disease: Macaca radiata

What is guanfacine, what is it used for in NHPs?

• Adrenoreceptor agonist

• Guanfacine showed efficacy in 2 pigtail macaques (Macaca nemstrina) in reducing agonistic and anxiety-related behaviors at a dose of 10 mg/patient.

• Guanfacine administration has proven effective at reducing wounds in these colonies, resultant from aggression.

Do Timothy hay based diets reduce dietary calcium reducing risks of urolithiasis in guinea pigs?

• No, Transitioning from an Alfalfa hay pellet (AHP) diet to a Timothy hay based (THP) diet with practices to reduce overall reduction in dietary calcium were not sufficient to mitigate risk factors for urolithiasis in guinea pigs.

What guinea pig strain most commonly have uroliths?

 Strain 13/N form calcium carbonate uroliths

Do juvenile vs. adult guinea pigs have varying crystal loads in urine?

juveniles have more

What is being shown from this guinea pigs?

uroliths

Is LED lighting an acceptable alternative for lighting for breeding and nonbreeding zebra finches?

Yes

Is LED better than CWF (Cool-white flouresence) regarding hatchling survival?

yes, up to 100%

What is a noninvasive way to assess cortisol in finches?

Feces

Corynebacterium bovis is most severe in juvenile or adult athymic nude mice?

juvenile

Is age important for C. bovis clinical progression in athymic nude mice?

yes

Can mice become infected by dirty bedding from clinically affected mice with Corynebacterium bovis?

Yes

What microbe is this pictograph scoring?

C. bovis

Clinical scoring of C. bovis in mice?

What does C. bovis look like clinically in mice?