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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Npy2rtm1Hhz
targeted mutation 1, Herbert Herzog
MGI:2447395
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
cn1
Npy2rtm1Hhz/Npy2rtm1Hhz involves: 129X1/SvJ * C57BL/6 MGI:3694056
cn2
Npytm1(rtTA,tetO-cre/EGFP)Snby/Npy+
Npy2rtm1Hhz/Npy2rtm1Hhz
involves: 129X1/SvJ * C57BL/6 MGI:5297095


Genotype
MGI:3694056
cn1
Allelic
Composition
Npy2rtm1Hhz/Npy2rtm1Hhz
Genetic
Background
involves: 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Npy2rtm1Hhz mutation (0 available); any Npy2r mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
homeostasis/metabolism
N
• at 34 days after injection, leptinemia, insulinemia and glycemia are not significantly different from controls
• in mice treated with a hypothalamus-specific cre (J:97455)
• male, but not female hypothalamus-specific null mice, display corticosteronemia at 34 days post-injection (J:77345)
• at 12 days post-injection, insulinemia of hypothalamus-specific mutants tend toward lower values (58) than controls (97)
• male, but not female, hypothalamus-specific knockouts show a four-fold increase in plasma pancreatic polypeptide (PP) levels 34 days after injection

skeleton
• in mice treated with a hypothalamus-specific cre
• in mice treated with a hypothalamus-specific cre, trabecular bone volume is increased 2-fold compared to in control mice
• in mice treated with a hypothalamus-specific cre, trabeculae number and thickness are increased compared to in control mice
• in mice treated with a hypothalamus-specific cre
• in mice treated with a hypothalamus-specific cre, bone mineral apposition rate is increased 2-fold compared to in control mice
• in mice treated with a hypothalamus-specific cre, bone formation rate is increased 2-fold compared to in control mice

growth/size/body
• 7-8 days after hypothalamic cre-recombinase injection, mutants display a drop in body weight compared to GFP-injected mice or cre-injected wild-type mice or mutants receiving cre injection in the CA3 region of the hippocampus; at 12 days post-injection, hypothalamus-specific null mutants weigh significantly less than controls
• recovery to initial body weight is significantly delayed in hypothalamus-specific null mice; male controls return to original body weight within 14-22 days, but male hypothalamic-null mice do not fully recover their body weight until 28 days while null females recover by 23 days post-injection compared to 16 days in control females

adipose tissue
N
• hypothalamus-specific null mice do not show differences in white adipose tissue mass compared to controls

behavior/neurological
• male hypothalamus-specific null mice show significantly greater food intake than control mice after cre injection; female hypothalamus-null mutants show a similar tendency toward increased food intake

hematopoietic system
• in mice treated with a hypothalamus-specific cre

immune system
• in mice treated with a hypothalamus-specific cre




Genotype
MGI:5297095
cn2
Allelic
Composition
Npytm1(rtTA,tetO-cre/EGFP)Snby/Npy+
Npy2rtm1Hhz/Npy2rtm1Hhz
Genetic
Background
involves: 129X1/SvJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Npy2rtm1Hhz mutation (0 available); any Npy2r mutation (31 available)
Npytm1(rtTA,tetO-cre/EGFP)Snby mutation (0 available); any Npy mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
growth/size/body
N
• weight gain monitored over 8-week period and body length of mutants after cre induction by intracerebroventricular injection of doxycycline is not different from treated controls or wild-type mice
• by whole body densitometry (DEXA), whole body fat mass in doxycycline-treated females is increased compared to wild-type controls; however, expressed as percent body weight, whole fat mass in doxycycline-treated females is not different from saline-treated mutant females
• analyses over a 2-day period by indirect calorimetry show that male mutants (after cre induction) display a significant increase in body weight compared to treated controls; this transient, significant positive weight gain is observed in females also

adipose tissue
• by whole body densitometry (DEXA), whole body fat mass in doxycycline-treated females is increased compared to wild-type controls; however, expressed as percent body weight, whole fat mass in doxycycline-treated females is not different from saline-treated mutant females
• doxycycline-treated females show a trend to reduced total fat (white adipose tissue) mass (as % body weight), but also display a trend to increased percent adiposity (total WAT weight compared to wild-type controls) suggesting an increase in relative fat mass
• this is not observed in males
• total mass of dissected white adipose tissue depots is increased (as % body weight) in doxycycline-treated females compared to saline-treated females
• this is not observed in males

behavior/neurological
N
• no alterations in food intake in 15-week old mutants of either sex is observed with cre induction by intracerebroventricular injection of doxycycline; spontaneous food intake and intake after 24-hour fasting is similar to dox- or saline-treated controls and wild-type
• over a 2-day period as measured by indirect calorimetry after cre induction, male mutants show trend toward increased food intake relative to controls, but females do not
• after cre induction, females exhibit significantly decreased physical activity over a 2-day period relative to controls
• treated males do not show any alteration in activity

skeleton
• doxycycline-treated mice show (slight (1.2-fold) but) significant increase in trabecular bone volume as well as trabecular number as determined by micro-CT scan analyses, without change in trabecular thickness
• no differences in cortical bone thickness or volume in distal femur is observed in dox-treated mice compared with controls

homeostasis/metabolism
• after cre induction, male mutants show trend toward decreased rectal temperature (and increased food intake) relative to controls
• females do not, although the transient weight gain is observed
• analyses over a 2-day period by indirect calorimetry show that female mutants after cre induction) display a significant increase in oxygen consumption notably during light phase with no change in the dark phase
• male mice do not show this or change in respiratory exchange ratio (RER)
• doxycycline-treated females show improved fasting glycemia compared to controls
• doxycycline-treated males do not show this phenotype
• doxycycline-treated females show an increase in hepatic triglyceride content compared to saline-treated females; in males, triglyceride content is significantly decreased

liver/biliary system
• doxycycline-treated females show an increase in hepatic triglyceride content compared to saline-treated females; in males, triglyceride content is significantly decreased

renal/urinary system
N
• daily water intake in mutants after with cre induction by intracerebroventricular injection of doxycycline is not different from control





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last database update
11/19/2024
MGI 6.24
The Jackson Laboratory