Steven A. Thomas, Richard D. Palmiter  Cell 

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Impaired Maternal Behavior in Mice Lacking Norepinephrine and Epinephrine  Steven A. Thomas, Richard D. Palmiter  Cell  Volume 91, Issue 5, Pages 583-592 (November 1997) DOI: 10.1016/S0092-8674(00)80446-8

Figure 1 Fertility of Female Mice Housed with Different Males after Mating To test for pregnancy block, females were housed from 1.5 to 4.5 days postcoitus with either the stud male (familiar) of the same strain (129/SvCPJ × C57BL/6J) or an unfamiliar male (strange) of a different strain (BALB/c). All females were housed with the stud males until 1.5 days after mating. Numbers above bars represent the number of female matings examined. Cell 1997 91, 583-592DOI: (10.1016/S0092-8674(00)80446-8)

Figure 2 Survival of Pups Born to Dbh−/− Females (A) Percent survival of 199 pups born to Dbh−/− females mated with Dbh+/+ or Dbh+/− males. Postnatal day 1 is the morning pups were discovered in the cage. The majority of pups died 24–48 hr after birth. All pups born to Dbh−/− females were Dbh+/− because NE is essential for fetal survival (Thomas et al. 1995). (B) Comparison of first and second litters born to Dbh+/− and Dbh−/− females. Percent of litters found gathered in nest (litters gathered) on postnatal day 1 and percent survival of the pups to weaning (pups weaned). Eight females of each genotype were tested. Cell 1997 91, 583-592DOI: (10.1016/S0092-8674(00)80446-8)

Figure 3 Cross-Fostering of Pups Born to Dbh+/− and Dbh−/− Females Pups from Dbh−/− females were cross-fostered to Dbh+/− females that gave birth during the same night. Likewise, the pups born to the recipient Dbh+/− females were cross-fostered to the donor Dbh−/− females. Cross-fostering was performed the morning when the pups were discovered. All pups were placed into the recipient female's nest. Cell 1997 91, 583-592DOI: (10.1016/S0092-8674(00)80446-8)

Figure 4 Retrieval of Foster Pups by Virgin Females The number of pups from Dbh+/− females retrieved (gathered) into the nest after placing one foster pup in each of the three corners not containing the nest. The data are from the second retrieval session; pups were presented for 20 min. The latency to retrieve the first pup is also shown (latency). Numbers above bars represent the number of females tested. Only 7 of the 18 Dbh−/− females retrieved one or more pups. Females were 7–9 weeks old. For the gathering of pups, p < .0001 by t test; for latency, p = .038 by Mann-Whitney U test. Cell 1997 91, 583-592DOI: (10.1016/S0092-8674(00)80446-8)

Figure 5 Rescue of Litters Born to Dbh−/− Females by DOPS All females tested had abandoned their first litter. A DOPS plus carbidopa solution was administered to the females (shaded bars) either the evening before birth, the morning after birth, or both (B & A). None of the litters from the six females tested with DOPS injection the morning after birth survived. Females whose litters were rescued by DOPS during their second pregnancy were also examined for the survival of their litters following their third pregnancy (hatched bar). In this case, DOPS was not administered. The doses of DOPS and carbidopa used were 0.5 and 0.125 mg/g body weight, respectively. Numbers above bars represent the number of females tested. Cell 1997 91, 583-592DOI: (10.1016/S0092-8674(00)80446-8)

Figure 6 Rescue of Foster Pup Retrieval by Virgin Females Using DOPS (A) The number of pups retrieved as tested in Figure 4 is shown, except that the females were 4–5 months old. Control females were Dbh+/− (black bar). Dbh−/− females were either untreated (Dbh −/−, hatched bar), given the same dose of DOPS plus carbidopa as used in Figure 5 on the morning of each of the two retrieval sessions (DOPS, gray bar), or given twice the dose of DOPS (no carbidopa) on both mornings and the evening in between (2× DOPS; 0 pups retrieved). Numbers above bars represent the number of females tested. Statistical analysis was performed using ANOVA for unequal variances and Tamhane's T2 for posthoc comparison: Dbh+/− versus Dbh−/− irrespective of treatment, p < .005; Dbh−/− versus DOPS, p = .89; Dbh−/− versus 2× DOPS, p = .58. (B) Pup retrieval by Dbh−/− females. Procedure was that described in Figure 4 except that females were 4–5 months old. The second pup retrieval session was conducted on either E17.5 or E18.5 (pregnant) or postnatal day 2 (postpartum). The experiment was repeated with postpartum Dbh−/− females using pups born to other Dbh−/− females (postpartum*). DOPS plus carbidopa was administered the evening and the morning before each of the retrieval sessions. Thus, the first DOPS injection for the Dbh−/− females tested after birth was administered the evening before birth. The doses of DOPS and carbidopa used were 1 and 0.125 mg/g body weight, respectively. Statistical analysis was performed using the Mann-Whitney U test for comparison: pregnant, p = .71; combined postpartum, p = .047. Postpartum results were combined because the genotype of the dams from which the foster pups were born was not important. (C) Latency to gather the first pup by Dbh−/− females. Procedure was that described part B. Statistical analysis was performed using the Mann-Whitney U test for comparison: pregnant, p = .51; combined postpartum, p = .008. Cell 1997 91, 583-592DOI: (10.1016/S0092-8674(00)80446-8)

Figure 7 Olfactory Discrimination (A) Presentation of methyl salicylate at the relative concentrations indicated was paired with LiCl injection, an aversive stimulus. The concentrations are relative to a saturated aqueous methyl salicylate solution. Saccharin versus saccharin plus odorant consumption was measured 1 day later for 2 days. The preference ratio represents the ratio of the odorant solution consumed to total fluid consumed. Also shown is the preference ratio for a 10−3 relative concentration without LiCl injection (No LiCl). By two-way ANOVA, p = .0005 for concentration, p = .99 for genotype, and p = .78 for concentration by genotype. (B) Presentation of amyl acetate as in (A). By two-way ANOVA, p < .0001 for concentration, p = .07 for genotype, and p = .98 for concentration by genotype. Cell 1997 91, 583-592DOI: (10.1016/S0092-8674(00)80446-8)