Abnormal Fetal Lung of Hoxa1-/- Piglets Is Rescued by Maternal Feeding with All-Trans Retinoic Acid.

Neonatal Hoxa1-/- piglets were characterized by dyspnea owing to the Hoxa1 mutation, and maternal administration with ATRA alleviated the dyspnea of neonatal Hoxa1-/- piglets. The purpose of this experiment was to explore how maternal ATRA administration rescued the abnormal fetal lungs of Hoxa1-/- piglets. Samples of the lungs were collected from neonatal Hoxa1-/- and non-Hoxa1-/- piglets delivered by sows in the control group, and from neonatal Hoxa1-/- piglets born by sows administered with ATRA at 4 mg/kg body weight on dpc 12, 13, or 14, respectively. These were used for the analysis of ELISA, histological morphology, immunofluorescence staining, immunohistochemistry staining, and quantitative real-time PCR. The results indicate that the Hoxa1 mutation had adverse impacts on the development of the alveoli and pulmonary microvessels of Hoxa1-/- piglets. Maternal administration with ATRA at 4 mg/kg body weight on dpc 14 rescued the abnormal lung development of Hoxa1-/- piglets by increasing the IFN-γ concentration (p < 0.05), airspace area (p < 0.01) and pulmonary microvessel density (p < 0.01); increasing the expression of VEGFD (p < 0.01), PDGFD (p < 0.01), KDR (p < 0.01), ID1 (p < 0.01), and NEDD4 (p < 0.01); and decreasing the septal wall thickness (p < 0.01) and the expression of SFTPC (p < 0.01) and FOXO3 (p < 0.01). Maternal administration with ATRA plays a vital role in rescuing the abnormal development of lung of Hoxa1-/- fetal piglets.

Evaluation of neonatal withdrawal syndrome in neonates delivered by women taking psychotropic or anticonvulsant drugs: A retrospective chart review of the effects of multiple medications and breastfeeding.

OBJECTIVES: Neonates delivered by women who were taking psychotropic or anticonvulsant drugs during pregnancy are at increased risk of developing neonatal withdrawal syndrome. We investigated the incidence of neonatal withdrawal symptoms and the effects of multiple maternal medications and breastfeeding on neonatal withdrawal symptoms. STUDY DESIGN: This study examined the overall incidence of neonatal withdrawal symptoms in neonates delivered from 2004 to 2016 by women who were taking oral antipsychotics, antidepressants, anxiolytics, sedatives, or anticonvulsant drugs during pregnancy. Moreover, we compared the incidence of neonatal symptoms between mothers taking single drugs and multiple drugs, and between breastfed and formula-fed neonates. We scored the neonates according to the neonatal withdrawal syndrome checklist created by Isobe et al., which is widely used in Japan. RESULTS: We examined 131 mothers and their 134 neonates. Withdrawal symptoms were found in 54.5 % of neonates. Symptoms were found in 32.4 % of neonates delivered by mothers taking single drugs and 62.9 % of neonates delivered by mothers taking two or more drugs (p = 0.0019). One or more withdrawal symptoms developed in 46.4 % of breastfed neonates and 66.1 % of formula-fed neonates (p = 0.034). Five infants had a score of 8 or more points on the withdrawal checklist, which is an indication to consider treatment with pharmacotherapy. All five of these neonates were mainly formula-fed, and their mothers were taking two or more drugs. CONCLUSIONS: The incidence of withdrawal symptoms was high in neonates delivered by women taking psychotropic or anticonvulsant drugs; however, there were few serious cases. The risk increased when a mother was taking multiple drugs. Breastfeeding appeared to protect against withdrawal symptoms.

Organ retention of gadolinium in mother and pup mice: effect of pregnancy and type of gadolinium-based contrast agents.

PURPOSE: To investigate the effect of pregnancy and type of gadolinium (Gd)-based contrast agents (GBCAs) on organ retention of Gd in mother and pup mice after maternal administration. MATERIALS AND METHODS: Gd-DTPA-BMA (gadodiamide) or Gd-DOTA (gadoterate dimeglumine) was administered (2.0 mmol/kg of maternal weight) four times to pregnant Balb/c mice from gestational day 16-19, respectively. At 28 days after birth, they were euthanized and their organs (blood, brain, liver, kidney, spleen, and bone) were removed for the measurement of Gd by inductively coupled plasma mass spectrometry. RESULTS: Gd retention in maternal organs was generally lower than that in the organs of non-pregnant mice in both Gd-DTPA-BMA and Gd-DOTA groups. Significantly higher Gd retention was observed in the organs of pups whose mothers were administered Gd-DTPA-BMA as compared to those whose mothers were administered Gd-DOTA. Tissue-to-muscle ratio in the brains of pups was higher than that of mothers. CONCLUSION: We demonstrated in utero transplacental Gd retention in pups. In various organs in both mothers and pups, Gd retention was consistently higher for Gd-DTPA-BMA than Gd-DOTA administration. Pregnancy affected Gd retention in many maternal organs.