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Abstract
Immunology and Infection
Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
ERRATUM NOTICE
Important: There has been an erratum issued for this article. Read more …Abstract
In recent years, Hashimoto's thyroiditis (HT) has become the most common autoimmune thyroid disease. It is characterized by lymphocyte infiltration and the detection of specific serum autoantibodies. Although the potential mechanism is still not clear, the risk of Hashimoto's thyroiditis is related to genetic and environmental factors. At present, there are several types of models of autoimmune thyroiditis, including experimental autoimmune thyroiditis (EAT) and spontaneous autoimmune thyroiditis (SAT).
EAT in mice is a common model for HT, which is immunized with lipopolysaccharide (LPS) combined with thyroglobulin (Tg) or supplemented with complete Freund's adjuvant (CFA). The EAT mouse model is widely established in many types of mice. However, the disease progression is more likely associated with the Tg antibody response, which may vary in different experiments.
SAT is also widely used in the study of HT in the NOD.H-2h4 mouse. The NOD.H2h4 mouse is a new strain obtained from the cross of the nonobese diabetic (NOD) mouse with the B10.A(4R), which is significantly induced for HT with or without feeding iodine. During the induction, the NOD.H-2h4 mouse has a high level of TgAb accompanied by lymphocyte infiltration in the thyroid follicular tissue. However, for this type of mouse model, there are few studies to comprehensively evaluate the pathological process during the induction of iodine.
A SAT mouse model for HT research is established in this study, and the pathologic changing process is evaluated after a long period of iodine induction. Through this model, researchers can better understand the pathological development of HT and screen new treatment methods for HT.
Erratum
Erratum: Generation of a Mouse Spontaneous Autoimmune Thyroiditis ModelAn erratum was issued for: Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model. The Protocol section was updated.
Step 3.1.1 of the Protocol was updated from:
After the induction, anesthetize the mice with a volume of 0.01 mL/g anesthetic by intraperitoneal injection. Prepare the anesthetic by mixing midazolam (40 µg/100 µL for sedation), medetomidine (7.5 µg/100 µL for sedation), and butorphanol tartrate (50 µg/100 µL for analgesia) in phosphate-buffered saline (PBS).
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After the induction, anesthetize the mice with a volume of 0.01 mL/g anesthetic by intraperitoneal injection. Prepare the anesthetic by mixing midazolam (40 µg/100 µL for sedation), medetomidine (7.5 µg/100 µL for sedation), and butorphanol tartrate (50 µg/100 µL for analgesia) in phosphate-buffered saline (PBS).
NOTE: The specific concentrations of each component in the anesthesia mixture are: midazolam 13.33µg/100µL, medetomidine 2.5µg/100µL, and butorphanol 16.7µg/100µL. For specific dosages used in mice, the doses are: midazolam 4µg/g, medetomidine 0.75µg/g, and butorphanol 1.67µg/g. Anesthesia depth was confirmed when the mouse's limb muscles relaxed, the whiskers had no touch response, and there was loss of pedal reflex.
Step 3.1.2 of the Protocol was updated from:
After the mice are anesthetized, cut off their whiskers with ophthalmic scissors to prevent blood from flowing down the whiskers and causing hemolysis. Fix the mouse with one hand and press the skin of the eye to make the eyeball protrude. Quickly remove the eyeball and draw 1 mL of blood into the microcentrifuge tube via a capillary tube.
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After the mice are anesthetized, prepare the peripheral blood samples, by fixing the mouse with one hand and pressing the eye skin to protrude the eyeball. Then, insert the capillary tube into the inner corner of the eye and penetrate at a 30-45 degree angle to the plane of the nostril. Apply pressure while gently rotating the capillary tube. Blood will flow into the tube via capillary action.
Step 3.2.1 of the Protocol was updated from:
Dissect the chest wall to expose the heart, cut open the right atrium, and infuse saline into the left ventricle by an intravenous infusion needle attached to a 20 mL syringe until the tissue turns white.
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Humanely euthanize the animal according to the institutional policies. Then, dissect the chest wall to expose the heart, cut open the right atrium, and infuse saline into the left ventricle by an intravenous infusion needle attached to a 20 mL syringe until the tissue turns white.
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