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Phenotypes Associated with This Genotype
Genotype
MGI:3629043
hm1
Allelic
Composition
Il6tm1Kopf/Il6tm1Kopf
Genetic
Background
B6.129S2-Il6tm1Kopf/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il6tm1Kopf mutation (9 available); any Il6 mutation (38 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• the percentage of CD19+ B cell progenitors in the bone marrow is decreased from 58% to 35%
• after restimulation of spleen cells with keyhole limpet hemocyanin one week following immunization of mutant mice, reduced interferon gamma production is observed
• after restimulation of spleen cells with keyhole limpet hemocyanin one week following immunization of mutant mice, enhanced Il-4 secretion is observed
• intraperitoneal administration of LPS does not induce production of Il6 in the livers of mutants compared to wild-type where expression is increase
• mice treated with collagen II exhibit a lack of disease incident with normal joints compared with wild-type mice

homeostasis/metabolism
• injection of Il1beta results in body temperature elevation by about 0.5C (J:136166)
• inhibition of hepatic glucose production by ICV infusion of insulin is attenuated
• inhibition of hepatic glucose production assessed by a euglycemic hyperinsulinemic clamp is also attenuated
• decreased fasting glucagon levels on a high fat diet
• decreased fasting insulin levels on a high fat diet
• impaired glucose tolerance on a high fat diet

hematopoietic system
• the percentage of CD19+ B cell progenitors in the bone marrow is decreased from 58% to 35%

behavior/neurological
• increased latency to "give up" in a forced swim test
• significantly decreased time spent in the open arms of an elevated maze (J:96218)
• significantly decreased number of entries into the open arms of an elevated maze (J:96218)
• less time spent in the illuminated areas of a light-dark box (J:146951)
• lower latency to escape adverse stimuli
• fewer failures to escape adverse stimuli
• increased locomotor activity in open field tests
• increased time in non-REM sleep after sleep deprivation persists longer than for controls but increase in time is equivalent (J:105279)
• injection of Il1beta results in reduced dark phase wakefulness (J:136166)
• injection of Il1beta results in increased non REM sleep (J:136166)
• 30% increased time in REM sleep over a 24 hour period
• most extra REM sleep occurs in the light cycle
• length of REM bouts is normal but number of bouts increases

endocrine/exocrine glands
• alpha cell mass fails to increase on a high fat diet as it does in controls
• decreased fasting glucagon levels on a high fat diet
• decreased fasting insulin levels on a high fat diet

skeleton
• mice treated with collagen II exhibit a lack of disease incident with normal joints compared with wild-type mice


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory