Influence of prenatal steroid therapy on the incidence of respiratory disorders in late premature infants.

OBJECTIVES: This study was conducted because of conflicting data on the role of corticosteroids administered before delivery in the late premature period. The aim of the study was to assess the frequency of respiratory disorders in 'late premature infants' and the impact of using prenatal steroid therapy. MATERIAL AND METHODS: The study included 513 newborns born between the 34-36 week of pregnancy. They were divided into two groups. In the first group, there were 439 newborns (85.58%) who did not receive prenatal steroid therapy, and in the second group, there were 74 newborns (14.42%) born after the prenatal steroid course. The frequency of occurrence of respiratory disorders requiring the use of non-invasive respiratory support methods as well as intubation and mechanical ventilation was compared in both groups. RESULTS: In the group of premature infants after steroid therapy 43/74 (58.12%) did not require respiratory support compared to the group of infants without prenatal steroid therapy where in 368/439 (83.8%) cases no respiratory disorders were found. CONCLUSIONS: If there is a risk of preterm labor in the 34-36 week of pregnancy, the use of steroid therapy should be considered. Steroidotherapy at this moment of gestation may not be such beneficial, like in the more premature delivery, before 34 weeks of pregnancy.

Evaluation of selected parameters of immune response to rubella virus, hepatitis B virus and varicella-zoster virus infections in children born to mothers after kidney or liver transplantation.

BACKGROUND: The immune status of children exposed prenatally to immunosuppressants is not fully understood. MATERIAL AND METHODS: A single-center study evaluated possible differences in antibody levels between children prenatally exposed to immunosuppressants born to mothers after hepatic or kidney transplantation (study group) compared to children without prenatal exposure to immunosuppressants (control group). Children from the study and control group were age-matched at the time of the examination and gestational age-matched, so as to obtain similar stages of the vaccination schedule and to enable reliable comparison of the results. The selection of children was made in a 1:1 ratio. The study population, a total of 138 children, was divided according to the age of the children at the time of the study into three age groups: newborns, infants (from 29 days to 1 year) and children aged >1 year. Immunoenzymatic tests were used to analyze the titers of the chickenpox virus (VZV-IgG), rubella (RuV-IgG) and hepatitis B virus (HBV, HBsAb). The studied differences were compared depending on the age group and the immunosuppressive regimen used by the pregnant mother. RESULTS: In neonates born to mothers after liver transplantation, significant differences were found in HBsAb levels (>250 mIU/ml) compared to newborns without prenatal exposure to immunosuppressants taken by pregnant mothers (11/16, 69% vs. 4/14, 29%, respectively; p = .028). A similar difference in the level of HbsAb was no longer noted at later stages of children's lives. In infants, these values were 80% (4/5) vs. 33% (2/6), and in children over 1 year of age 15% (7/48) vs. 12% (6/49), respectively. No other significant differences were noted when compared the distribution of measured parameters of VZV and RuV in both analyzed groups (children of mothers after kidney or liver transplantation chronically treated with immunosuppression and children without prenatal exposure to immunosuppression). CONCLUSIONS: Prenatal exposure to immunosuppressive therapy does not appear to affect VZV, RuV and HBV antibody levels in children of mothers who have had a kidney or liver transplant. Initially elevated HBSAb levels in newborns of mothers after liver transplantation are not observed in later stages of life.

Selected Biochemical Parameters in Children of Mothers After Kidney Transplantation.

INTRODUCTION: The number of pregnant kidney graft recipients receiving immunosuppressive drugs is increasing yearly. All potentially nephrotoxic and hepatotoxic immunosuppressive drugs penetrate through the placenta, which raises questions about their long-term effects on offspring. OBJECTIVES: The study aimed to evaluate the influence of immunosuppressive drugs used by pregnant women after kidney transplantation on the biochemical parameters of their children. MATERIALS AND METHODS: Forty children born to mothers after kidney transplantation (KTx) and 40 children of healthy mothers from the control group were included in the study. All graft-recipient mothers received immunosuppressive treatment during pregnancy. The study compared biochemical parameters, including urea, creatinine, potassium, and sodium, in both groups. RESULTS: Elevated creatinine level was observed in 1 newborn in the KTx group and none of the children from the control group (P = .500). All KTx children had normal urea levels, while in the control group, 2 newborns had an increased level of urea (P = .247). Elevated potassium levels were observed in 10% of children in the KTx group and 20% of children in the control group (χ2 = 0.881; P = .348). Elevated sodium levels were observed in 22.5% of children in the KTx group and 32.5% of children in the control group (χ2 = 1.001; P =.317). No child in the KTx group had hyponatremia; mild hyponatremia was observed in 5% of children in the control group (P = .247). CONCLUSION: There was no increased risk of an abnormal concentration of urea, creatinine, sodium, and potassium in the offspring of mothers after kidney transplantation using immunosuppressive drugs during pregnancy.

Evaluation of Lipid Profile in Children Born to Female Transplant Recipients.

INTRODUCTION: Being aware of the nephro- and hepatotoxic effects of most immunosuppressants, assessing their potential effects on the health of the offspring is an important aspect of deliberate family planning after organ transplantation. AIM: The aim of the study was to evaluate the influence of immunosuppressive drugs used by pregnant women after kidney or liver transplantation on the lipid profile of their children. MATERIALS AND METHODS: Ninety-one children born to mothers after kidney or liver transplantation (study group) and 91 children of healthy mothers from the control group (control group) were included in the study. Transplant donors received immunosuppressive treatment in monotherapy or combination regimens during pregnancy. The study compared lipidogram values including total cholesterol, high-density lipoprotein, low-density lipoprotein, and triglycerides. The lipidogram was analyzed depending on the following 3 most commonly used immunosuppressive regimens: study group 1: CI (calcineurin inhibitors); study group 2: CI + GCs (glucocorticosteroids); and study group 3: CI + GCs + AZA (azathioprine). RESULTS: There were no significant differences between study group and control group in mean total cholesterol, high-density lipoprotein, low-density lipoprotein, and triglyceride levels (P > .05). In each of the studied subgroups, at least 1 abnormal lipidogram fraction was noted. Frequency of these deviations in study group 1, study group 2, and study group 3 were 31%, 57%, and 26%, respectively. However, no statistically significant differences were found between these obtained results (P > .05). CONCLUSIONS: Prenatal exposure to immunosuppressants taken by the mother after liver or kidney transplantation does not appear to significantly affect the occurrence of lipid disorders in these children.

Neurological development of children born to mothers after kidney transplantation.

BACKGROUND: Pregnancies after kidney transplantation are at high risk of complications such as preterm birth and foetal growth restriction. Until now, the impact of these factors on neurological development of children born to transplant mothers has not been established. AIMS: A comparison of neurological examinations performed in 36 children of kidney transplant women (study group) and 36 children born to healthy mothers (control group). The children from both groups were born at a similar gestational age and in the similar time period from 12/1996 to 09/2012. Neurological examinations were performed from 07/2010 to 11/2013. Each examination was adjusted to the patient's age and performed after the neonatal period. Three years later children were re-consulted, if they presented neurological deviations or were less than 12 months old at the time of the first examination. RESULTS: Normal neurological development was found in 86% of children in both groups (p = .999). Mild neurological deviations were observed in four (11%) children born to kidney transplant mothers and in five (14%) children born to healthy mothers (p = .999). Moderate deviations were diagnosed in one premature child born to transplant mother, whose pregnancy was complicated with a severe preeclampsia and foetal growth restriction. In the study population, no severe neurological disorders were found. Almost all (8/10) children with neurological deviations were born prematurely in good general conditions. The neurological deviations observed in the first year of life were mild and transient. In children over 1 year of age, deviations were more pronounced and continued to maintain. CONCLUSIONS: The neurological development of children of kidney transplant women is similar to that of the general population and possible deviations seem to be the result of intrauterine hypotrophy and prematurity. Therefore, in clinical practice, it is necessary to plan post-transplant pregnancies especially in women at high risk of these complications.

Evaluation of the body mass index (BMI) in children born to organ transplant recipients.

BACKGROUND: Overweight and obesity are one of the most serious clinical health problems. Until now, the long-term development of children born to mothers after transplantation is unknown. In this study, we attempted to present the analysis of the prevalence of overweight in the population of mothers after kidney or liver transplants. METHODS: A comparison of body mass index (BMI) measurements performed in 61 children of kidney transplant women (study group) and 64 children born to healthy mothers (control group). The children from both groups were born at a similar gestational age and in the similar time period from 12/1996 to 11/2010. BMI was measured once on one of the follow-up visits in the time period from 07/2010 to 11/2013. BMI was assessed in infants older than one month as well as in toddlers or children in the preschool or school age. The results obtained in the study group of children born to transplanted mothers were compared with control group results and with the theoretical population data. RESULTS: There were no differences in the incidence of underweight and overweight, when BMI values of children born to transplanted mothers were compared to those of children of healthy mothers. There was a trend towards a greater incidence of obesity in children of studied group compared to controls (16 versus 6%, p = .072). Among analysed factors, it was noted that prenatal exposure to tacrolimus was associated with a 2.8-fold increased risk of developing a higher BMI in later follow-up. CONCLUSIONS: Obesity among children of mothers after kidney or liver transplants seems to be more frequently observed. This observation may be an important factor in the further paediatric care, especially in children born to transplanted mothers treated chronically with tacrolimus.

Immunological Status of Children Born to Female Liver Recipients.

BACKGROUND Immunosuppressive treatment in pregnant organ recipients can affect functions of the fetal and newborn immune system. The aim of this study was to evaluate the effect of this treatment on selected parameters of the immune system of children born to mothers after liver transplantation. MATERIAL AND METHODS The study included 52 children born to liver recipients and 52 children in the control group. The study was conducted in the 1st Department of Obstetrics and Gynecology, Medical University of Warsaw. Children from the 1st day of life to 10 years of age were examined. Serum antibody concentrations of IgG, IgM, and IgA were measured by the immune agglutination method on a Cobas 6000 analyzer. RESULTS Comparison of mean IgG, IgM, and IgA levels and with reference values did not show a significant difference between the study and control group (p>0.05). Immunoglobulin concentrations were also analyzed in the groups of children according to their age at the time of the test and the type of calcineurin inhibitor used in the mother's treatment. The analysis showed a significant difference in the distribution of IgA concentrations in comparison to the normal values (p<0.05), as well as mean IgA (p<0.05) and IgM concentrations (p<0.05) according to the type of immunosuppressive treatment of the mother (tacrolimus or cyclosporin treatment regimen). CONCLUSIONS Analysis of the type of immunosuppressive therapy used during pregnancy revealed a possible influence of the type of calcineurin inhibitor on selected parameters of the immune system of the children; however, further research is needed to confirm these findings.

[Severe hemolytic disease of the newborn as a result of late and undiagnosed alloimmunization--case report]. / Ciezka choroba hemolityczna noworodka w wyniku póznej i nierozpoznanej immunizacji--opis przypadku.

We report a case of a hemolytic disease in a newborn from the first pregnancy due to anti-D antibodies. The maternal blood group was A Rhesus negative. She had an antibody screening test twice during the pregnancy (in the second trimester) and it was negative. The pregnancy was uneventful, without any invasive procedures and bleeding. The infant was born at 39 weeks of gestation in good overall condition. After the delivery the blood group of the neonate was indicated - A Rhesus positive, BOC positive. Anti-D antibodies were detected in maternal blood. Neonatal blood tests revealed severe anemia (hemoglobin level: 6.0g/dl, hematocrit: 22.2%, erythrocytes: 2.01T/L). During the first day of neonatal life, the newborn received two transfusions of red blood cells. Bilirubin level and rate of rise were not recommendation enough for exchange transfusion. The newborn was treated with continuous phototherapy since the delivery The perinatal period was complicated with intrauterine infection and respiratory failure. Hematopoietic vitamins and iron supplementation was initiated in the second week of neonatal life due to persistent anemia. The child remained under medical care of a hematologic clinic and received human recombinant erythropoietin treatment.