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https://www.readbyqxmd.com/read/28099134/carboxyhemoglobin-the-forgotten-parameter-of-neonatal-hyperbilirubinemia
#1
Douggl G N Bailey, Hans Fuchs, Roland Hentschel
BACKGROUND: Neonatal hyperbilirubinemia is influenced by a wide variety of factors, one of which is hemolysis. Serious hyperbilirubinemia may lead to a kernicterus with detrimental neurologic sequelae. Patients suffering from hemolytic disease have a higher risk of developing kernicterus. Carbon monoxide (CO), a byproduct of hemolysis or heme degradation, was described by Sjöstrand in the 1960s. It is transported as carboxyhemoglobin (COHb) and exhaled through the lungs. We were interested in a potential correlation between COHb and total serum bilirubin (TSB) and the time course of both parameters...
January 18, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28096983/pde3-inhibition-with-enoximone-as-first-line-therapy-for-severe-persistent-pulmonary-hypertension-of-the-newborn-during-neonatal-transport-a-case-report
#2
Robin van der Lee, Barbara Peels, Corine Koopman-Esseboom
Severe Persistent pulmonary hypertension of the newborn (PPHN) can be effectively treated with a PDE3 inhibitor as first-line treatment during neonatal transport when iNO is not readily available. Starting iNO as soon as possible is strongly advised because of the complementary actions of both therapeutics.
January 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28088757/challenges-in-neonatal-transport-in-jamaica-a-resource-limited-setting
#3
Salome Henry, Helen Trotman
AIM: This study aimed to determine challenges associated with neonatal transport in Jamaica, a resource-limited setting. METHODS: This was a prospective descriptive study of neonates transported to the University Hospital of the West Indies (UHWI) over a 15 month period. Data on the clinical status of the neonates before, during and at the end of transport, as well as on accompanying staff and equipment, were collected. Neonatal demographics, reason for transfer and outcome at 48 h and at discharge were also collected...
January 14, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28088454/alpha-l-iduronidase-and-arylsulfatase-b-in-dried-blood-spots-on-filter-paper-biochemical-parameters-and-time-stability
#4
Ana Carolina Breier, Jaqueline Cé, Jamila Mezzalira, Vanessa V Daitx, Vitoria C Moraes, Mariana P S Goldim, Janice C Coelho
BACKGROUND: The goal of this study was to assess the biochemical parameters of the enzymes α-l-iduronidase (IDUA) and arylsulfatase B (ASB), which are deficient in mucopolysaccharidosis (MPS) I and VI, respectively, in dried blood spot (DBS) samples impregnated on filter paper. METHODS AND RESULTS: The optimal pH, Km, and Vmax of IDUA and ASB in DBS are hereby presented. After these analyses, the reference values for the activities of these enzymes in DBS with cutoff of 3...
January 11, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28086760/education-of-pediatric-subspecialty-fellows-in-transport-medicine-a-national-survey
#5
Geoffrey E Mickells, Denise M Goodman, Ranna A Rozenfeld
BACKGROUND: The transport of critically ill patients to children's hospitals is essential to current practice. The AAP Section on Transport Medicine has raised concerns about future leadership in the field as trainees receive less exposure to transport medicine. This study identifies the priorities of pediatric subspecialty fellows, fellowship directors and nursing directors in transport medicine education. METHODS: Internet based surveys were distributed to fellows, fellowship directors and nursing directors of transport teams affiliated with ACGME-approved fellowships in Neonatal-Perinatal Medicine (NPM), Pediatric Critical Care Medicine (PCCM), and Pediatric Emergency Medicine (PEM)...
January 13, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28081504/the-expression-and-function-of-the-neonatal-fc-receptor-in-thyrocytes-of-hashimoto-s-thyroiditis
#6
Chenxu Zhao, Ying Gao, Lanlan Zhao, Yuan Li, Yang Zhang, Suxia Wang, Hong Zhang, Guizhi Lu, Xiaohui Guo
OBJECTIVE: Thyroglobulin (Tg) and thyroid peroxidase (TPO) antibodies (TgAb and TPOAb), which are primarily of the immunoglobulin G (IgG) class, can mediate antibody-dependent cell-mediated cytotoxicity in vitro. However, it is unclear whether any thyrocyte molecules can facilitate the transport and elimination of TgAb and TPOAb. The IgG transport receptor neonatal Fc receptor (FcRn) is a candidate mediator of these processes. In this study, we aimed to evaluate FcRn expression and function in normal and Hashimoto's thyroiditis (HT) thyrocytes...
January 9, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28068807/annals-express-measuring-cortisol-in-serum-urine-and-saliva-are-our-assays-good-enough
#7
Nadia El-Farhan, D Aled Rees, Carol Evans
Cortisol is a steroid hormone produced in response to stress. It is essential for maintaining health and well-being; and leads to significant morbidity when deficient or present in excess. It is lipophillic and is transported bound to cortisol-binding globulin (CBG) and albumin; a small fraction (~10%) of total serum cortisol is unbound and biologically active. Serum cortisol assays measure total cortisol and their results can be misleading in patients with altered serum protein concentrations. Automated immunoassays are used to measure cortisol but lack specificity and show significant interassay differences...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28062192/direct-effects-of-glucose-insulin-glp-1-and-gip-on-bulbospinal-neurons-in-the-rostral-ventrolateral-medulla-in-neonatal-wistar-rats
#8
Naoki Oshima, Hiroshi Onimaru, Hidehito Matsubara, Takahiro Uchida, Atsushi Watanabe, Toshihiko Imakiire, Yasuhiro Nishida, Hiroo Kumagai
Although patients with diabetes mellitus (DM) often exhibit hypertension, the mechanisms responsible for this correlation are not well known. We hypothesized that the bulbospinal neurons in the rostral ventrolateral medulla (RVLM) are affected by the levels of glucose, insulin, or incretins (glucagon like peptide-1 [GLP-1] or glucose-dependent insulinotropic peptide [GIP]) in patients with DM. To investigate whether RVLM neurons are activated by glucose, insulin, GLP-1, or GIP, we examined changes in the membrane potentials of bulbospinal RVLM neurons using whole-cell patch-clamp technique during superfusion with various levels of glucose or these hormones in neonatal Wistar rats...
January 3, 2017: Neuroscience
https://www.readbyqxmd.com/read/28056712/neonatal-head-and-torso-vibration-exposure-during-inter-hospital-transfer
#9
Laurence Blaxter, Mildrid Yeo, Donal McNally, John Crowe, Caroline Henry, Sarah Hill, Neil Mansfield, Andrew Leslie, Don Sharkey
Inter-hospital transport of premature infants is increasingly common, given the centralisation of neonatal intensive care. However, it is known to be associated with anomalously increased morbidity, most notably brain injury, and with increased mortality from multifactorial causes. Surprisingly, there have been relatively few previous studies investigating the levels of mechanical shock and vibration hazard present during this vehicular transport pathway. Using a custom inertial datalogger, and analysis software, we quantify vibration and linear head acceleration...
December 1, 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28049467/inhibition-of-placental-mtor-signaling-provides-a-link-between-placental-malaria-and-reduced-birthweight
#10
Kris Genelyn Dimasuay, Elizabeth H Aitken, Fredrick Rosario, Madi Njie, Jocelyn Glazier, Stephen J Rogerson, Freya J I Fowkes, James G Beeson, Theresa Powell, Thomas Jansson, Philippe Boeuf
BACKGROUND: Placental Plasmodium falciparum malaria can trigger intervillositis, a local inflammatory response more strongly associated with low birthweight than placental malaria infection alone. Fetal growth (and therefore birthweight) is dependent on placental amino acid transport, which is impaired in placental malaria-associated intervillositis. Here, we tested the hypothesis that mechanistic target of rapamycin (mTOR) signaling, a pathway known to regulate amino acid transport, is inhibited in placental malaria-associated intervillositis, contributing to lower birthweight...
January 3, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28041739/short-communication-promotion-of-glucagon-like-peptide-2-secretion-in-dairy-calves-with-a-bioactive-extract-from-olea-europaea
#11
S Y Morrison, J J Pastor, J C Quintela, J J Holst, B Hartmann, J K Drackley, I R Ipharraguerre
Diarrhea episodes in dairy calves involve profound alterations in the mechanism controlling gut barrier function that ultimately compromise intestinal permeability to macromolecules, including pathogenic bacteria. Intestinal dysfunction models suggest that a key element of intestinal adaptation during the neonatal phase is the nutrient-induced secretion of glucagon-like peptide (GLP)-2 and associated effects on mucosal cell proliferation, barrier function, and inflammatory response. Bioactive molecules found in Olea europaea have been shown to induce the release of regulatory peptides from model enteroendocrine cells...
December 29, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/28028291/contaminated-milk-is-a-common-cause-of-necrotising-enterocolitis-a-hypothesis
#12
N Y Boo
Necrotising enterocolitis (NEC) is the most commonly acquired gastrointestinal disease of neonates, particularly the very preterm (gestation <32 weeks) and/or very low birth weight (<1500g). It is associated with high morbidity and mortality. Despite improvement in neonatal care and increased use of expressed breast milk (EBM), the incidence remains high in many neonatal intensive care units (NICU), and even shows increasing trend in some countries. Numerous studies have pointed to the infective nature of NEC...
December 2016: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/28025703/the-biology-of-the-abca3-lipid-transporter-in-lung-health-and-disease
#13
REVIEW
Michael F Beers, Surafel Mulugeta
The lipid transporter, ATP-binding cassette class A3 (ABCA3), is a highly conserved multi-membrane-spanning protein that plays a critical role in the regulation of pulmonary surfactant homeostasis. Mutations in ABCA3 have been increasingly recognized as one of the causes of inherited pulmonary diseases. These monogenic disorders produce familial lung abnormalities with pathological presentations ranging from neonatal surfactant-deficiency-induced respiratory failure to childhood or adult diffuse parenchymal lung diseases for which specific treatment modalities remain limited...
December 26, 2016: Cell and Tissue Research
https://www.readbyqxmd.com/read/28025333/modulation-of-bilirubin-neurotoxicity-by-the-abcb1-transporter-in-the-ugt1-lethal-mouse-model-of-neonatal-hyperbilirubinemia
#14
Luka Bočkor, Giulia Bortolussi, Simone Vodret, Alessandra Iaconcig, Jana Jašprová, Jaroslav Zelenka, Libor Vitek, Claudio Tiribelli, Andrés F Muro
Moderate neonatal jaundice is the most common clinical condition during newborn life. However, a combination of factors may result in acute hyperbilirubinemia, placing infants at risk of developing bilirubin encephalopathy and death by kernicterus. While most risk factors are known, the mechanisms acting to reduce susceptibility to bilirubin neurotoxicity remain unclear. The presence of modifier genes modulating the risk of developing bilirubin-induced brain damage is increasingly being recognised. The Abcb1 and Abcc1 members of the ABC family of transporters have been suggested to have an active role in exporting unconjugated bilirubin from the central nervous system into plasma...
December 25, 2016: Human Molecular Genetics
https://www.readbyqxmd.com/read/28011589/maternal-engineered-nanomaterial-exposure-disrupts-progeny-cardiac-function-and-bioenergetics
#15
Quincy A Hathaway, Cody E Nichols, Danielle L Shepherd, Phoebe A Stapleton, Sarah L Mclaughlin, Janelle C Stricker, Stephanie L Rellick, Mark V Pinti, Alaeddin B Abukabda, Caroll R McBride, Jinghai Yi, Seth M Stine, Timothy R Nurkiewicz, John M Hollander
Nanomaterial production is expanding as new industrial and consumer applications are introduced. Nevertheless, the impacts of exposure to these compounds are not fully realized. The current study was designed to determine whether gestational nano-TiO2 exposure impacts cardiac and metabolic function of developing progeny. Pregnant Sprague Dawley rats were exposed to nano-TiO2 aerosols (~10 mg/m(3), 130 - 150 nm count median aerodynamic diameter) for 7-8 non-consecutive days beginning at gestational day 5-6. Physiological and bioenergetic effects on heart function and cardiomyocytes across three time points: fetal (gestational day 20), neonatal (4-10 days), and young adult (6-12 weeks) were evaluated...
December 23, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28009331/a-study-of-acute-kidney-injury-in%C3%A2-hospitalized-preterm-neonates-in-nicu
#16
N Nagaraj, P K Berwal, A Srinivas, A Berwal
OBJECTIVES: This study was carried out to determine the incidence, clinical features, etiology and outcome of functional and intrinsic acute kidney injury (AKI) in preterm neonates. METHODS: This is a prospective observational study on premature infants admitted to the neonatal intensive care unit (NICU) over an eight month period. All biochemical parameters of renal function tests were monitored and statically analyzed. RESULTS: The study included 450 infants; of them 300 were inborn and 150 infants were outborn and transported to the NICU...
2016: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28005311/eltrombopag-a-thrombopoietin-mimetic-crosses-the-blood-brain-barrier-and-impairs-iron-dependent-hippocampal-neuron-dendrite-development
#17
Thomas W Bastian, Kari A Duck, George C Michalopoulos, Michael J Chen, Zhi-Jian Liu, James R Connor, Lorene M Lanier, Martha C Sola-Visner, Michael K Georgieff
BACKGROUND: Thrombocytopenia is common in sick neonates. Thrombopoietin mimetics (e.g., eltrombopag (ELT)) might provide an alternative therapy for selected neonates with severe and prolonged thrombocytopenia, and for infants and young children with different varieties of thrombocytopenia. However, ELT chelates intracellular iron, which may adversely affect developing organs with high metabolic requirements. Iron deficiency (ID) is particularly deleterious during brain development, impairing neuronal myelination, dopamine signaling, and dendritic maturation and ultimately impairing long-term neurological function (e...
December 22, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/27999114/improved-management-of-harlequin-ichthyosis-with-advances-in-neonatal-intensive-care
#18
REVIEW
Jaimie B Glick, Brittany G Craiglow, Keith A Choate, Hugo Kato, Robert E Fleming, Elaine Siegfried, Sharon A Glick
Harlequin ichthyosis (HI) is the most severe phenotype of the autosomal recessive congenital ichthyoses. HI is caused by mutations in the lipid transporter adenosine triphosphate binding cassette A 12 (ABCA12). Neonates are born with a distinct clinical appearance, encased in a dense, platelike keratotic scale separated by deep erythematous fissures. Facial features are distorted by severe ectropion, eclabium, flattened nose, and rudimentary ears. Skin barrier function is markedly impaired, which can lead to hypernatremic dehydration, impaired thermoregulation, increased metabolic demands, and increased risk of respiratory dysfunction and infection...
January 2017: Pediatrics
https://www.readbyqxmd.com/read/27992386/applying-computer-models-to-realize-closed-loop-neonatal-oxygen-therapy
#19
Edmund Morozoff, John A Smyth, Mehrdad Saif
BACKGROUND: Within the context of automating neonatal oxygen therapy, this article describes the transformation of an idea verified by a computer model into a device actuated by a computer model. Computer modeling of an entire neonatal oxygen therapy system can facilitate the development of closed-loop control algorithms by providing a verification platform and speeding up algorithm development. METHODS: In this article, we present a method of mathematically modeling the system's components: the oxygen transport within the patient, the oxygen blender, the controller, and the pulse oximeter...
January 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27977876/introducing-high-flow-nasal-cannula-to-the-neonatal-transport-environment
#20
Michael A Boyle, Arunava Dhar, Rajiv Chaudhary, Susan Kent, Samantha S O'Hare, Theodore Dassios, Susan Broster
Respiratory support using heated humidified high-flow nasal cannula (HFNC) therapy has become established practice over the past decade in neonatal intensive care units. HFNC therapy is delivered through small thin tapered cannulae that sit at the nasal aperture using oxygen, or blended oxygen and air, at flow rates greater than 1L/min(1, 2). Recently several studies have demonstrated that it can be safely used as a mode of respiratory support and that the positive end expiratory pressure generated is comparable to that delivered using continuous positive airway pressure (CPAP) (3-5)...
December 15, 2016: Acta Paediatrica
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