| Gene: 1962 | Name: similar to CGI-45 protein | Family: Seven Transmembrane | Subfamily: Progestin Receptor | Accession: BC024094 | GI: 23271650 |
|---|
Gene
1962
Summary of Phenotypic Analysis
Changes
related to genotype:
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. The resultant F1N0 heterozygotes were backcrossed to C57BL/6 mice to generate F1N1 heterozygotes. F2N1 homozygous mutant mice were produced by intercrossing F1N1 heterozygous males and females.
Wild-type control mice and homozygous mutant mice were evaluated by the following examinations or tests:
When compared to age- and gender-matched wild-type control mice, testis size was decreased in one homozygous male and all homozygous mutant males had lower testis and epididymis weights. When compared to age and gender-matched wild-type mice, all homozygous males had moderate scattered degeneration of the seminiferous tubules of the testis with the presence of multinucleate giant cells. There was accompanying severe epididymal oligospermia and mild to moderate sloughing of testicular spermatogenic precursor cells in all homozygous mutant males.
Gene 1962
Expression
Summary
Taqman Summary:
RNA transcripts are detectable in all tissues analyzed.
The highest levels of RNA transcripts are detectable in Harderian glands, coagulating gland and white fat.
Moderate levels of RNA transcripts are detectable in: lung, liver, pancreas, lymph nodes, gallbladder, urinary bladder, pituitary gland, adrenal gland, stomach, epididymis, seminal vesicle, prostate gland and ovary.
Lower levels of RNA transcripts are also detectable in: whole brain, cortex, subcortical region, cerebellum, brainstem, olfactory bulb, spinal cord, eye, heart, kidney, spleen, thymus, bone marrow, skin, salivary gland, skeletal muscle, tongue, small intestine, large intestine, cecum, testis and uterus.
LacZ Summary:
LacZ expression was detected in all of the organs examined. Most striking
expression was detected in liver. Staining was observed in different
tissue and cell types, including smooth, cardiac and skeletal muscle, epithelium,
neurons, cartilage, adipose tissue, lymphatic tissue and blood vessels.
LacZ
expression was detected: brain, spinal cord, sciatic nerve, eyes, thymus,
spleen, lymph nodes, bone marrow, aorta, heart, lung, liver, pancreas, kidney,
urinary bladder, thyroid gland, trachea, pituitary gland, adrenal glands,
skeletal muscle, skin, testis, prostate gland, ovary, uterus and cervix.
Gene 1962
Densitometry
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 dual-energy x-ray absorptiometry.
49 Day Cohort Mouse ID numbers are as follows:
3 homozygous mutant females (456924, 456931, 457930)
3 homozygous mutant males (444518, 457926, 457928)
2 wild-type control females (444519, 461051)
2 wild-type control males (444516, 444517)
Bone Mineral Density (BMD in g/cm2 ), fat % (fat percentage
expressed as a percentage of body soft tissue compartment), and R-value of soft
tissue were calculated from Bone Mineral Content (BMC in g), bone and tissue
areas (cm2 ), and total tissue mass
(g) generated by a PIXImus densitometer.
Densitometric Findings:
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 1962
Histopathology
Changes
related to genotype:
Tissues from the following mice
were evaluated histologically.
49 Day Cohort Mouse ID numbers are as follows:
3 homozygous mutant females (456924, 456931, 457930)
3 homozygous mutant males (444518, 457926, 457928)
2 wild-type control females (444519, 461051)
2 wild-type control males (444516, 444517)
Histopathology
Findings:
When compared to age and gender-matched wild-type mice, all homozygous males
had moderate scattered degeneration of the seminiferous tubules of the testis
with the presence of multinucleate giant cells. There was accompanying
severe epididymal oligospermia and mild to moderate sloughing of testicular
spermatogenic precursor cells in all homozygous mutant males.
No Significant Abnormalities:
The following tissues were examined and considered to have no genotype-related abnormality (except if specifically noted above) : 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, tongue, skeletal muscle, sciatic nerve, mammary glands, vertebrae, spinal cord, bone (skull, sternum, femur, tibia, and stifle joint), 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 1962
Necropsy
Changes
related to genotype:
·
Testis,
decreased size, homozygous mutant male.
·
Testis and
epididymis, low weights, all homozygous mutant males.
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:
3 homozygous mutant females (456924, 456931, 457930)
3 homozygous mutant males (444518, 457926, 457928)
2 wild-type control females (444519, 461051)
2 wild-type control males (444516, 444517)
Mice were examined for the following observables: adrenal glands, body length,
body weight, bone marrow, bone - cranium, bone - femur, bone - sternum, bone -
stifle joint, bone - vertebral column, brain, cecum, colon, duodenum,
epididymis - seminal vesicle, esophagus, eyes, gallbladder, general appearance,
Harderian glands, heart, heart weight, ileum, jejunum, kidney weight, kidneys,
liver, liver weight, lungs, lymph nodes, mesentery, ovaries, pancreas, penis,
salivary glands, sciatic nerve, scrotum, skeletal muscle, skin, skinned mouse,
spleen, spleen weight, stomach, testes, testes - epididymis weight, thymus,
thymus weight, tongue, trachea, urinary bladder, urine, uterus, and vagina.
(Gender-specific observables apply to the appropriate gender.)
Necropsy Findings:
When
compared to age- and gender-matched wild-type control mice, testis size was
bilaterally decreased in one homozygous male (457926). There were no other
genotype-related or biologically significant differences noted between mutant
and wild-type control mice for any of the parameters evaluated at necropsy.
Incidental lesions may have been 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 related
to genotype.
Body
and Organ Weight Findings:
When
compared to age and gender-matched wild-type mice, all homozygous mutant males
had lower testis and epididymis weights. The findings correlated with
testicular degeneration reported at histopatholgical examination. Other
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.
Gene 1962
Clinical Chemistry
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:
3 homozygous mutant females (456924, 456931, 457930)
2 homozygous mutant males (457926, 457928)
2 wild-type control females (461051, 461054)
2 wild-type control males (444516, 444517)
Values for the various analytes evaluated were generally similar between
homozygous mutant and wild-type control mice. Although variations in clinical
chemistry values were present in some mice, they were not related to genotype
and, thus, were not considered phenotypically relevant.
Gene 1962
Hematology
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:
2 homozygous mutant females (456931, 457930)
3 homozygous mutant males (444518, 457926, 457928)
2 wild-type control females (444519, 461051)
2 wild-type control males (444516, 444517)
Although minor variations of hematological values were present in some mice,
these changes were not related to genotype and, thus, were not considered
phenotypically relevant.
Gene 1962
Physical Examination
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:
3 homozygous mutant females (456924, 456931, 457930)
3 homozygous mutant males (444518, 457926, 457928)
2 wild-type control females (444519, 461051)
2 wild-type control males (444516, 444517)
Mice
were examined in detail as follows: anus, behavior, body shape, claws, coat -
fur, coat color - back, coat color - belly, ear - left, ear - right, eye -
left, eye - right, eye color - left, eye color - right, feces, forelimb - left,
forelimb - right, forelimb number of amputated digits - left, forelimb number
of amputated digits - right, forelimb number of digits - left, forelimb number
of digits - right, general appearance, genitals - female, genitals - male, hair
type, head shape, hindlimb - left, hindlimb - right, hindlimb number of
amputated digits - left, hindlimb number of amputated digits - right, hindlimb number
of digits - left, hindlimb number of digits - right, injuries, lesions, limb
shape, locomotor, lumps - masses, mammary glands, mice in cage, respiration,
skin appearance, snout, swelling - joints, tail, teeth color, teeth length,
urine, and whiskers. (Gender-specific observables apply to the appropriate
gender.)
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.