Gene: 1471 | Name: Frzb | Family: Growth Factor Inhibito... | Subfamily: Secreted Frizzled | Accession: NM_011356 | GI: 6755475 |
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Gene
1471 Changes related to genotype: Behavior: Homozygous mutant mice exhibited significantly decreased time immobile during tail suspension testing, significantly decreased motor performance on the rotarod test, and a significant increase in thermal response latency during tail flick and hot plate testing testing. There were no other significant differences detected in the homozygous mutant mice when compared with age- and gender-matched wild-type control mice. ES cells derived from the 129/OlaHsd mouse substrain were used to generate chimeric mice. F1 mice were generated by breeding with C57BL/6 females. F2 homozygous mutant mice were produced by intercrossing F1 heterozygous males and females. Wild-type control mice and homozygous mutant mice were evaluated by the following examinations or tests:
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Gene
1471 Taqman Summary: Lower levels of RNA transcripts are also detectable in: cortex, subcortical region, cerebellum, brainstem, spinal cord, eye, heart, liver, pancreas, spleen, thymus, lymph nodes, skin, gallbladder, urinary bladder, pituitary gland, adrenal gland, salivary gland, tongue, epididymis, seminal vesicle, coagulating gland, prostate gland, ovary and uterus. No RNA transcripts are detectable in: Harderian glands, lung, bone marrow, stomach, small intestine, large intestine, cecum and white fat. LacZ Summary: LacZ expression was not detected in: spinal cord, sciatic nerve, eyes, thymus, spleen, lymph nodes, bone marrow, aorta, heart, lung, liver, pancreas, kidney, urinary bladder, thyroid gland, parathyroid gland, pituitary gland, adrenal glands, skeletal muscle, skin, testis, prostate gland, ovary, uterus and cervix. |
Gene
1471 There were no significant differences detected in the homozygous mutant mice when compared with age- and gender-matched wild-type control mice. The following mice were necropsied. Body weight, body length, and organ weights were obtained, and gross pathological findings were recorded. 49 Day Cohort Mouse ID
numbers are as follows: Necropsy Findings: There were no genotype-related or biologically significant differences noted between mutant and wild-type control mice for any of the parameters evaluated at necropsy. Incidental lesions were present in some tissues. For example, two 49 day cohort homozygous mutant females (334794, 335273) and one 49 day cohort homozygous mutant male (320566) had focal black discoloration in the spleen. This finding was histologically correlated with minimal to mild scattered pigment deposition in all of the mice. These findings were considered to represent background lesions occasionally seen in this strain of mice, lesions due to spontaneous disease, age-related lesions, and/or lesions of a nonspecific etiology. They were not considered to be related to genotype. Body and Organ Weight Findings: Differences in body length, body weight, organ weights, and/or organ weight to body weight ratios were present between individual mice. The variability between mice usually fell within our historical reference ranges and was not correlated with genotype.
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Gene
1471 There were no significant differences detected in the homozygous mutant mice when compared with age- and gender-matched wild-type control mice. Tissues from the following mice were evaluated histologically. 49 Day Cohort Mouse ID numbers
are as follows: The following tissues were examined and considered to have no genotype-related abnormality: brain, pituitary gland, ears, nasal cavity, salivary glands, oral cavity, lymph nodes, aorta, lungs, liver, gallbladder, pancreas, spleen, kidneys, adrenal glands, urinary bladder, stomach, small and large intestines, larynx, esophagus, trachea, thyroid gland, thymus gland, tongue, skeletal muscle, sciatic nerve, mammary glands, vertebrae, spinal cord, bone (skull, sternum, femur, tibia, and stifle joint), reproductive tract (including gonads), eyes, Harderian glands, integumentary system (skin and either clitoral or preputial glands), and bone marrow. Bone marrow was examined in sections of sternum, vertebrae, and/or femur and tibia. Marrow cellularity, myeloid:erythroid (M:E) ratio, myeloid and erythroid maturation sequences, and numbers of megakaryocytes were evaluated. Incidental lesions were present in some tissues. These findings were considered to represent background lesions occasionally seen in this strain of mice, lesions due to spontaneous disease, age-related lesions, and/or lesions of a nonspecific etiology. They were not considered to be genotype related. |
Gene
1471 There were no significant
differences in the homozygous mutant mice when compared with age- and
gender-matched wild-type control mice. Blood samples from the following
mice were evaluated by a complete blood count and differential cell count. 49 Day Cohort Mouse ID numbers
are as follows: |
Gene
1471 There were no significant
differences in the homozygous mutant mice when compared with age- and
gender-matched wild-type control mice. Serum samples from the following
mice were evaluated by a clinical chemistry panel. 49 Day Cohort Mouse ID numbers
are as follows: |
Gene
1471 The following mice were evaluated by dual-energy x-ray absorptiometry. 49 Day Cohort Mouse ID numbers
are as follows: Incidental densitometric differences were present between some mice. These findings were considered to represent background differences occasionally seen in this strain of mice, differences due to spontaneous disease, age-related differences, and/or differences of a nonspecific etiology. They were not considered to be genotype related. |
Gene
1471 There were no significant
differences detected in the homozygous mutant mice when compared with age-
and gender-matched wild-type control mice. The following mice were evaluated
by physical examination. 49 Day Cohort Mouse ID numbers
are as follows: Individual homozygous mutant mice
had only occasional minor differences in observed physical features compared
to wild-type control mice. These findings were considered to represent
individual variability, background features occasionally seen in this strain
of mice, findings due to spontaneous disease, age-related findings, and/or
findings of a nonspecific etiology. However, none of these differences were
regarded as biologically significant or genotype related.
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Gene 1471
Homozygous
mutant and wild-type control mice were evaluated for phenotypic changes by
testing on seven behavioral tasks: Open field test, Tail suspension
test, Rotarod test, Startle response/PPI test, Tail flick test, Hot plate
test, and Metrazol test. Mouse ID numbers are as follows for the N1 generation: Behavior Findings: When
compared to age- and gender-matched wild-type control mice, homozygous mutant
mice fell from the rotarod at significantly slower speeds, indicating a
possible decreased motor performance phenotype. When
compared to age- and gender-matched wild-type control mice, homozygous mutant
mice exhibited a significant increase in thermal response latency during
tail flick and hot plate testing, indicating a possible increased
pain threshold phenotype. There
were no other genotype-related differences noted between homozygous mutant
and wild-type control mice for any other parameters evaluated during behavior
testing. |
Gene 1471 Three homozygous mutant mice of each gender were set up in a fertility mating one on one with each other at seven to ten weeks of age. The number of pups born from three litters was recorded. Three weeks later, the live pups were counted and weaned. Mating pair (375819, 375822) only produced 2 litters during the mating period, both of which were viable at the time of weaning. Mating pair (384237, 384240) only produced one litter during the mating period, which was viable at the time of weaning. Mouse ID numbers are as follows: 3 homozygous mutant females (375822,
384235, 384240) |