Figure 2Full rescue of 5HT neuron phenotype, nurturing, and offspring survival depends on maternal Fev expression level
(a) Absolute quantification of Fev and Pet-1 transcript levels by qPCR. Asterisks indicate significantly (P<0.05) different Fev transcript levels in Tg(Fev)/Pet-1−/− rescue lines compared to wild type Pet-1 transcript levels. Wild type, n=8; Tg(Fev)3/ Pet-1−/−, n=8; Tg(Fev)1/ Pet-1−/−, n=7; Tg(Fev)4/ Pet-1−/−, n=5. (b) Level of brain 5HT at postnatal day 0 and 30 in Tg(Fev)3/Pet-1−/− mice was intermediate between the level in wild type, Tg(Fev)1/Pet-1−/− and Tg(Fev)4/Pet-1−/−, and Pet-1−/−mice. *P<0.05, n=8 for each genotype. (c) TPH2 and SERT RNA were reduced in Tg(Fev)3/Pet-1−/− brain relative to wild type level. Wild type n=11; Tg(Fev)3/Pet-1−/− n=14. P<0.05 (d) Percentage of surviving pups born to wild type (n=13), Tg(Fev)1/Pet-1−/− (n=10), Tg(Fev)3/Pet-1+/− (n=9), Tg(Fev)3/Pet-1−/− (n=11), Tg(Fev)4/Pet-1−/− (n=12), and Pet-1−/− (n=13) dams. ANOVA with Dunnett’s post test, P<0.05. (e) Percentage of litters with offspring death. (f) Number of alive and dead pups found outside of the nest. (g) Percentage of litters with alive or dead pups out of the nest. (e-g): Number of litters observed: wild type, n=13; Tg(Fev)3/Pet-1−/−, n=11; Tg(Fev)4/Pet-1−/−, n=12; Pet-1−/−, n=6. Error bars represent s.e.m.