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Background Psychosocial stress during the COVID-19 pandemic is increasing particularly in parents. Although being specifically vulnerable to negative environmental exposures, research on psychosocial stress factors in infants’ and toddlers’ families during the pandemic is so far sparse. The CoronabaBY study investigates the perceived pandemic burden, parenting stress and parent and child mental health problems in families with children aged 0–3 years in Bavaria, Southern Germany. Further, the relationships between these psychosocial stressors are examined and sociodemographic characteristics that may be predictive of these factors will be explored. Methods Participants were cross-sectionally surveyed via smartphone app. Standardized questionnaires on perceived pandemic burden, parenting stress, parental symptoms of depression and anxiety, infants’ crying, sleeping and feeding problems or toddlers’ emotional and behavioral problems were applied. Results N  = 991 parents ( M age  = 33.7 years, SD  = 4.5; 93.7% mothers, 91.5% born in Germany) with infants ( n  = 554; M age  = 5.9 months, SD  = 3.0) or toddlers ( n  = 435; M age  = 25.9 months, SD  = 6.5) participated in the first half-year of 2021. Sixty-five percent of the parents perceived a high pandemic burden, 37.7% experienced parenting stress and 24.1% showed affective symptoms (anxiety: 30.1%, depression: 18.5%). Feeding problems, crying/ sleeping problems and multiple regulatory problems were found in 34.8%, 26.2% and 13.5% of the infants, respectively. Amongst toddlers, 8.5% showed noticeable behavior and emotional problems. Children`s mental health problems correlated moderately with parenting stress and parental affective symptoms and weakly with perceived pandemic burden. A lower financial status, higher parental education and increasing child age were significant but weak predictors for higher parenting stress, affective symptoms and higher psychological problems in children. Conclusions A majority of the surveyed families with infants and toddlers experience the pandemic as stressful. The main challenges are parental affective symptoms and limited resources for childcare due to parenting stress. Overall, infants and toddlers show similar levels of mental health problems when being compared to pre-pandemic studies, but staggered detrimental effects on children`s mental health might occur if the stressful conditions persist. This is already indicated by correlations between parental and child psychosocial stress factors.

Background Families with young children are particularly vulnerable for the stressors induced by the COVID-19 pandemic. However, studies on their psychosocial situation during the course of the crisis are still sparse. Methods In a comparison of three survey waves (wave I and III = high COVID-19 incidences), we cross-sectionally investigated the proportion of families (N total  = 2940) with children aged 0–3 years experiencing pandemic burden, parenting stress, and parental and child mental health problems in relation to COVID-19 incidences and restrictions in Southern Germany via validated questionnaires. Potential influencing factors were also explored. Results The number of parents with a high pandemic burden decreased over the course of the pandemic with a peak of 65.3% in wave I (significant changes except wave II versus III). Participants with high parenting stress significantly increased from 38.2% in wave I to 51.2% in wave III. The number of parents with symptoms of depression and anxiety remained constantly high with a maximum of 28.4% being affected. Infants with crying/sleeping problems increased significantly from 26.4% in wave I to 35.5% in wave III. Toddlers’ emotional and behavioral problems showed a peak of 23.9% in wave III (no significant changes). Increased family conflicts were the strongest predictor for parenting stress (ß = 0.355), maternal (ß = 0.305), infants’ (ß = 0.149) and toddlers’ (ß = 0.216) mental health problems during the pandemic. Conclusions Psychosocial stress factors in families with infants and toddlers remained highly pronounced and even partly increased irrespective of pandemic events. The findings suggest a staggered negative impact of pandemic-related factors on young children’s mental health. Promoting infants’ mental health as well as strengthening parental resources by reducing parenting stress should be a top healthcare priority in the aftermath of COVID-19. Trial registration The study was pre-registered in OSF ( https://osf.io/search/?q=tksh5&page=1 )

Families with young children are particularly vulnerable for the stressors induced by the COVID-19 pandemic. However, studies on their psychosocial situation during the course of the crisis are still sparse. In a comparison of three survey waves (wave I and III = high COVID-19 incidences), we cross-sectionally investigated the proportion of families (N.sub.total = 2940) with children aged 0-3 years experiencing pandemic burden, parenting stress, and parental and child mental health problems in relation to COVID-19 incidences and restrictions in Southern Germany via validated questionnaires. Potential influencing factors were also explored. The number of parents with a high pandemic burden decreased over the course of the pandemic with a peak of 65.3% in wave I (significant changes except wave II versus III). Participants with high parenting stress significantly increased from 38.2% in wave I to 51.2% in wave III. The number of parents with symptoms of depression and anxiety remained constantly high with a maximum of 28.4% being affected. Infants with crying/sleeping problems increased significantly from 26.4% in wave I to 35.5% in wave III. Toddlers' emotional and behavioral problems showed a peak of 23.9% in wave III (no significant changes). Increased family conflicts were the strongest predictor for parenting stress (ss = 0.355), maternal (ss = 0.305), infants' (ss = 0.149) and toddlers' (ss = 0.216) mental health problems during the pandemic. Psychosocial stress factors in families with infants and toddlers remained highly pronounced and even partly increased irrespective of pandemic events. The findings suggest a staggered negative impact of pandemic-related factors on young children's mental health. Promoting infants' mental health as well as strengthening parental resources by reducing parenting stress should be a top healthcare priority in the aftermath of COVID-19.

Psychosocial stress during the COVID-19 pandemic is increasing particularly in parents. Although being specifically vulnerable to negative environmental exposures, research on psychosocial stress factors in infants' and toddlers' families during the pandemic is so far sparse. The CoronabaBY study investigates the perceived pandemic burden, parenting stress and parent and child mental health problems in families with children aged 0-3 years in Bavaria, Southern Germany. Further, the relationships between these psychosocial stressors are examined and sociodemographic characteristics that may be predictive of these factors will be explored. N = 991 parents (M.sub.age = 33.7 years, SD = 4.5; 93.7% mothers, 91.5% born in Germany) with infants (n = 554; M.sub.age = 5.9 months, SD = 3.0) or toddlers (n = 435; M.sub.age = 25.9 months, SD = 6.5) participated in the first half-year of 2021. Sixty-five percent of the parents perceived a high pandemic burden, 37.7% experienced parenting stress and 24.1% showed affective symptoms (anxiety: 30.1%, depression: 18.5%). Feeding problems, crying/ sleeping problems and multiple regulatory problems were found in 34.8%, 26.2% and 13.5% of the infants, respectively. Amongst toddlers, 8.5% showed noticeable behavior and emotional problems. Children`s mental health problems correlated moderately with parenting stress and parental affective symptoms and weakly with perceived pandemic burden. A lower financial status, higher parental education and increasing child age were significant but weak predictors for higher parenting stress, affective symptoms and higher psychological problems in children. A majority of the surveyed families with infants and toddlers experience the pandemic as stressful. The main challenges are parental affective symptoms and limited resources for childcare due to parenting stress. Overall, infants and toddlers show similar levels of mental health problems when being compared to pre-pandemic studies, but staggered detrimental effects on children`s mental health might occur if the stressful conditions persist. This is already indicated by correlations between parental and child psychosocial stress factors.

Exact diagnosis of hereditary spherocytosis (HS) is widely considered unreliable around birth. However, early postnatal diagnosis at the beginning of congenital hemolysis may be essential for managing neonatal anemia and hemolytic icterus, identifying those at high risk for severe hyperbilirubinemia, irreversible kernicterus, or sudden need for red cell transfusion. We analyzed 37 blood samples from neonates or infants up to six weeks of life that had been collected in-house or shipped to our laboratory due to suspected red cell membrane disorder. By combining assessment of red cell morphology, acidified glycerol lysis test (AGLT), and eosin-5′-maleimide (EMA) binding assay, we were able to clearly exclude HS in 22 and confirm HS in 10 patients, of which one had undergone red cell transfusion prior to blood sampling. Assessment of red cell morphology and normal test results allowed diagnosis of infantile pyknocytosis or Heinz body anemia in three neonates. Re-evaluation of five patients with inconsistent results of AGLT and EMA binding led to confirmation of HS in two cases. Automated analysis of hematologic parameters revealed elevated proportion of hyperdense cells to be a highly significant indicator for HS in neonatal infants. We showed that assessment of red cell morphology in combination with AGLT and EMA binding assay is a reliable basis for confirming or rejecting suspected diagnosis of HS even in neonates. Our data underline the necessity for blood sampling and laboratory exploration in suspected red cell membrane or enzyme defects at the earliest occasion.

Zinc (Zn 2+ ) can modulate platelet and coagulation activation pathways, including fibrin formation. Here, we studied the (patho)physiological consequences of abnormal platelet Zn 2+ storage and release. To visualize Zn 2+ storage in human and mouse platelets, the Zn 2+ specific fluorescent dye FluoZin3 was used. In resting platelets, the dye transiently accumulated into distinct cytosolic puncta, which were lost upon platelet activation. Platelets isolated from Unc13d −/− mice, characterized by combined defects of α/δ granular release, showed a markedly impaired Zn 2+ release upon activation. Platelets from Nbeal2 −/− mice mimicking Gray platelet syndrome (GPS), characterized by primarily loss of the α-granule content, had strongly reduced Zn 2+ levels, which was also confirmed in primary megakaryocytes. In human platelets isolated from patients with GPS, Hermansky-Pudlak Syndrome (HPS) and Storage Pool Disease (SPD) altered Zn 2+ homeostasis was detected. In turbidity and flow based assays, platelet-dependent fibrin formation was impaired in both Nbeal2 −/− and Unc13d −/− mice, and the impairment could be partially restored by extracellular Zn 2+ . Altogether, we conclude that the release of ionic Zn 2+ store from secretory granules upon platelet activation contributes to the procoagulant role of Zn 2+ in platelet-dependent fibrin formation.

AimType 1 diabetes is the most common chronic metabolic disease in childhood. Often diagnosis comes with acutely life-threatening ketoacidosis and requires hospitalization. To avoid this, early detection of children at a pre-symptomatic stage is worthwhile. This task is met by a population-based screening in Bavaria, Germany – the Fr1da study. Here, we aim to evaluate the study concept, feasibility and medical evidence of the Fr1da study.Methods308 pediatricians, 16 diabetes care centers and participating families were asked to evaluate the Fr1da study by completing questionnaires assessing study concept and feasibility, educational program and study organization. The assessment was done anonymously. In order to evaluate the effectiveness of the training the parents had to answer questionnaires to assess their knowledge about diabetes.Results48% of pediatricians and 56% of pediatric diabetes care centers filled out the questionnaire. The majority positively judged the collaboration with the Fr1da coordinating center and the feasibility to integrate the project into daily routine. Medical evidence of the screening was recognized and most of the respondents endorsed the screening to be permanently integrated into standard care-program. The majority of parents would recommend the study to other parents with young children since they were satisfied with the collaboration with pediatricians, diabetes care centers and the coordinating center. Quality control of the educational program revealed good understanding of the teaching content.ConclusionThe Fr1da study received high acceptance and recognition by both, health care providers and participating families, and demonstrated sustainable success with the developed educational program.

Vitamin B(12) deficiency is one of the major causes of megaloblastic anaemia with or without neurological symptoms. We report on a patient manifesting acute encephalopathy, epilepsy, microcephaly and megaloblastic anaemia at the age of 4 months. Vitamin B(12) deficiency in the patient was due to subclinical pernicious anaemia of the mother who exhibited neither haematological nor neurological symptoms. Mother and child both had elevated methylmalonic acid in their urine which is a sensitive parameter of vitamin B(12) deficiency. Vitamin B(12) therapy resulted in arrest of convulsions within 24 h. There were no further seizures although the patient showed moderate mental retardation at the age of 7 years but a normal head circumference. Long-term MRI follow-up, performed at the age of 7 years, showed moderate enlargement of the ventricles with reduction of myelin and hypoplasia of the corpus callosum. Vitamin B(12) deficiency due to maternal pernicious anaemia should always be considered in the differential diagnosis of neurological symptoms in infants and especially in combination with megaloblastic anaemia. Since the age of onset and the duration of neurological symptoms may contribute to the development of long-term symptoms, early diagnosis and treatment is important for vitamin B(12) deficient children.

Zinc (Zn ) can modulate platelet and coagulation activation pathways, including fibrin formation. Here, we studied the (patho)physiological consequences of abnormal platelet Zn storage and release. To visualize Zn storage in human and mouse platelets, the Zn specific fluorescent dye FluoZin3 was used. In resting platelets, the dye transiently accumulated into distinct cytosolic puncta, which were lost upon platelet activation. Platelets isolated from Unc13d mice, characterized by combined defects of α/δ granular release, showed a markedly impaired Zn release upon activation. Platelets from Nbeal2 mice mimicking Gray platelet syndrome (GPS), characterized by primarily loss of the α-granule content, had strongly reduced Zn levels, which was also confirmed in primary megakaryocytes. In human platelets isolated from patients with GPS, Hermansky-Pudlak Syndrome (HPS) and Storage Pool Disease (SPD) altered Zn homeostasis was detected. In turbidity and flow based assays, platelet-dependent fibrin formation was impaired in both Nbeal2 and Unc13d mice, and the impairment could be partially restored by extracellular Zn . Altogether, we conclude that the release of ionic Zn store from secretory granules upon platelet activation contributes to the procoagulant role of Zn in platelet-dependent fibrin formation.