Newborn physical condition and breastfeeding behaviours: Secondary outcomes of a cluster‐randomized trial of prenatal lipid‐based nutrient supplements in Bangladesh

Prenatal nutritional supplements may improve birth outcomes. This study aims to examine the effect of prenatal lipid‐based nutrient supplements (LNS), compared with iron and folic acid (IFA), on general newborn physical condition and feeding behaviours. We conducted a cluster‐randomized effectiveness trial that enrolled 4,011 pregnant women at ≤20 gestational weeks. LNS and IFA were provided to women in 48 and 16 clusters, respectively, for daily consumption until delivery. We collected data on household socio‐economic, food insecurity, and maternal characteristics during early pregnancy and on newborn condition and feeding within 72 hr of delivery. We analysed intervention effects on these secondary outcomes using mixed models with analysis of covariance for continuous outcomes and logistic regression for dichotomous outcomes. Among 3,664 live births, intervention groups did not differ in newborn response, mother's rating of the general condition of her newborn, early initiation of breastfeeding (EIBF), suckling ability, or frequency and exclusivity of breastfeeding in the first 24 hr. If the mother perceived her infant to be healthy, EIBF was more likely (OR [95% CI]: 2.08 [1.46, 2.97]) and frequency of breastfeeding in the first 24 hr was greater (mean difference [95% CI]: 3.0 [1.91, 4.01]), but there was no difference in exclusive breastfeeding in the first 24 hr. Newborn condition and early breastfeeding practices were not affected by giving mothers prenatal LNS versus IFA. However, early breastfeeding practices were related to maternal perception of her newborn's condition. Thus, interventions to improve breastfeeding practices for newborns with poorer perceived health status may be useful.     

Comparative proteomic exploration of whey proteins in human and bovine colostrum and mature milk using iTRAQ-coupled LC-MS/MS

Whey, an essential source of dietary nutrients, is widely used in dairy foods for infants. A total of 584 whey proteins in human and bovine colostrum and mature milk were identified and quantified by the isobaric tag for relative and absolute quantification (iTRAQ) proteomic method. The 424 differentially expressed whey proteins were identified and analyzed according to gene ontology (GO) annotation, Kyoto encyclopedia of genes and genomes (KEGG) pathway, and multivariate statistical analysis. Biological processes principally involved biological regulation and response to stimulus. Major cellular components were extracellular region part and extracellular space. The most prevalent molecular function was protein binding. Twenty immune-related proteins and 13 proteins related to enzyme regulatory activity were differentially expressed in human and bovine milk. Differentially expressed whey proteins participated in many KEGG pathways, including major complement and coagulation cascades and in phagosomes. Whey proteins show obvious differences in expression in human and bovine colostrum and mature milk, with consequences for biological function. The results here increase our understanding of different whey proteomes, which could provide useful information for the development and manufacture of dairy products and nutrient food for infants.

The advanced iTRAQ proteomic approach was used to analyze differentially expressed whey proteins in human and bovine colostrum and mature milk.     

The metabolic syndrome and its components in pediatric survivors of allogeneic hematopoietic stem cell transplantation

Metabolic syndrome (MetS) is a known complication after hematopoietic stem cell transplantations (HSCT) that contributes to long‐term morbidity. We assessed the prevalence of components of the MetS in pediatric survivors of allogeneic HSCT and identified associated risk factors. Thirty‐eight patients, median age at HSCT, 8.5 years, were evaluated at a median of 3.9 years post‐HSCT. Overweight or obesity was seen in 23.7% of the patients, 15.8% had hypertension, 15.8% had hypertriglyceridemia, and 13% had low high‐density lipoprotein cholesterol levels according to age and gender. Four (10.5%) met the criteria of MetS; all were transplanted for malignant disease. Twelve patients (31.6%) had at least one component of the MetS. The 5‐year probability of developing components of the MetS revealed that patients with BMI‐Z score ≥0 at HSCT were significantly at higher risk than those with lower BMI‐Z. Patients who developed components of the MetS had higher levels of insulin, homeostasis model assessment, uric acid, leptin, and lower adiponectin levels. Multivariable regression analysis revealed that BMI‐Z‐score >1.036 at time of evaluation was associated with 4.3‐fold increased risk (P=.050) and adiponectin levels ≤6 μg/mL were associated with 6.7‐fold increased risk of develop components of the MetS (P=.007). Overweight and obesity and adiponectin levels may be useful as markers in HSCT survivors.     

Characterization of a monoclonal antibody against human prolactin receptors

Tamoxifen is the first line of therapy for most human breast cancers. It not only works through the estrogen receptor but also can directly affect the binding of prolactin to its receptor. To define this latter mechanism, the nature of the prolactin receptor needs to be clearly defined. Monoclonal antibody (MAb) B6.2, an IgG₁ raised against a membrane-enriched fraction from metastatic human breast cancer cells, was as effective as polyclonal anti-prolactin receptor antibody in inhibiting the binding of prolactin to membranes from human tissue and to T47D human breast cancer cells. Control MAbs, MOPC-21 and the anti-NCA B1.1 MAb, had no effect on binding. Epidermal growth-factor receptors on these same cells were unaffected by B6.2. Prolactin-induced growth of the T47D cells was blocked by addition of B6.2 to the media while the control antibodies were without effect. Specific binding of B6.2 to the cells was completely inhibited by prolactin. Binding of both prolactin and B6.2 was inhibited by growing the T47D cells in the presence of tunicamycin A, under conditions where protein synthesis was not affected but glycosylation of proteins was. An affinity column of B6.2 was used to purify its antigen from T47D cells. The primary purification product, a M_r 90,000 protein, specifically bound the lactogenic hormones human prolactin, human growth hormone and ovine prolactin but not the somatogenic hormone, bovine growth hormone and was precipitated by the polyclonal anti-prolactin receptor antibody but not by control MAbs. When tryptic and V8 digests of the B6.2 antigen and purified prolactin receptors were compared, identical electrophoretic profiles were obtained. Mouse 3T3 cells, when stably transfected with the gene for the long form of the human prolactin receptor, reacted with B6.2 and polyclonal anti-prolactin receptor antibody. Parental 3T3 cells, devoid of prolactin receptors, were negative for all antibodies tested. Thus, MAb B6.2 provides a useful tool for further studies on purification and characterization of these receptors from human tissues and may provide new insights into treatment for breast cancer.     

T-cell acute lymphoblastic leukemia following therapy of rhabdomyosarcoma

Multiple studies have documented an increased risk of secondary malignancies in patients receiving alkylating agents. Secondary leukemia following chemotherapy accounts for about 20% of all secondary neoplasms; most are acute nonlymphocytic. Secondary acute lymphoblastic leukemia has rarely been reported in either adult or childhood cancer. We report the development of acute T-cell lymphoblastic leukemia in a child following successful treatment of a paravertebral embryonal rhabdomyosarcoma (ERS). Southern blot analysis of DNA extracted from the T-cell lymphoblasts, using probes homologous to loci on the short arm of chromosome 11; P-calcitonin, P40.1 and H-ras, did not demonstrate the chromosomal loss of heterozygosity (LOH), a common feature of embryonal rhabdomyosarcoma. The data presented support the assumption that de novo leukemia emerged following treatment of the primary malignancy. © 1992 Wiley-Liss, Inc.     

Eosinophilic Granulomatous Lymphadenopathy: Association with Hyper-IgE and Eosinophilia

Cervical lymph node enlargement is probably the most frequently detected childhood lymph-adenopathy. We report 2 cases of cervical lymphadenopathy in children associated with hyper-IgE and eosinophilia, displaying the features of necrotizing eosinophilic granulomatosis. Imrnu-nohistochemical analysis and a serological work-up failed to elucidate the underlying etiology. We would like to call the attention of physicians and pathologists to this unusual clinical picture, different from the fatal form of necrotizing eosinophilic granulomatosis, and we suggest a role for the eosinophils in the pathologic appearance of the lymph nodes.     

Daytime Workers with Longer Daily Rest Periods Have Smaller Sleep Debt and Social Jetlag: A Cross-Sectional Web Survey

ABSTRACT

Objectives: The work interval duration between the end of one workday and the start of the following workday is referred to as the daily rest period (DRP). The present study examined whether DRP – a proxy for sleep opportunity between work shifts – is associated with indicators of sleep debt and social jetlag among daytime workers.

Methods: We used a web-based survey to gather data on demographics, average DRP in the previous month, time in bed (TIB), bedtime, wake-up time, and sleep timing on workdays and non-workdays. The Japanese daytime workers (n = 3,914) were divided into seven DRP groups (hours) as follows: <11, 11, 12, 13, 14, 15, and ≥16.

Results: The two-way analyses of covariance (DRP group x day) for TIB, mid-sleep as sleep timing, bedtime, and wake-up time showed significant interactions (all p < .001). Specifically, TIB was significantly shorter, and mid-sleep and wake-up time were significantly earlier on workdays than on non-workdays, across all DRP groups (all p < .001). Additionally, the different values for TIB (sleep debt), sleep timing (social jetlag), bedtime, and wake-up time were calculated by subtracting workdays from non-workdays. The trend analysis showed that workers with longer DRP (sleep opportunity) had smaller differences in TIB, sleep timing, and wake-up time between workdays and non-workdays (all p < .001).

Conclusions: Overall, daytime workers reported significant sleep debt and misalignment between work and free sleep-wake periods. However, workers with shorter DRPs (less sleep opportunity between shifts) reported significantly greater amounts of sleep debt and social jetlag than did workers with longer DRPs.     

Effects of Brazelton Demonstrations on Later Parenting: A Meta-Analysis

Meta-analysis of parenting interventions based on the NeonatalBehavioral Assessment Scale (NBAS) was conducted. Only publishedstudies (n = 13) were included in this analysis, with one effectsize entered for each study. The studies contained a total of668 families, an average of about 51 per study. Effect sizesare reported in terms of the correlation coefficient (r) aswell as the difference between experimental and control groupmeans divided by the pooled standard deviation (Cohen's d).Analyses were conducted by weighting each study equally (unitweighting) and also by sample size. Similar average effect sizeswere obtained for both weighting procedures (r's of about .2,d's of about A), indicating that Brazelton-based interventionsduring the neonatal period have a small-moderate beneficialeffect on the quality of later parenting. The probability ofobtaining these findings by chance approached zero. The potentialfactors influencing these results are discussed, as well asdirections for future research.