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Neonatal Platelets

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https://www.readbyqxmd.com/read/28644735/fetal-and-neonatal-alloimmune-thrombocytopenia-evidence-based-antenatal-and-postnatal-management-strategies
#1
Dian Winkelhorst, Dick Oepkes, Enrico Lopriore
Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is a relatively rare but potentially lethal disease, leading to severe bleeding complications in 1 in 11.000 newborns. It is the leading cause of thrombocytopenia in healthy term-born neonates. Areas covered: This review summarizes the antenatal as well as postnatal treatment, thus creating a complete overview of all possible management strategies for FNAIT. Expert commentary: The optimal antenatal therapy in order to prevent bleeding complications in pregnancies complicated by FNAIT is non-invasive treatment with weekly intravenous immunoglobulin (IVIG)...
June 23, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28634578/neonatal-venous-thromboembolism
#2
REVIEW
Kristina M Haley
Neonates are the pediatric population at highest risk for development of venous thromboembolism (VTE), and the incidence of VTE in the neonatal population is increasing. This is especially true in the critically ill population. Several large studies indicate that the incidence of neonatal VTE is up almost threefold in the last two decades. Central lines, fluid fluctuations, sepsis, liver dysfunction, and inflammation contribute to the risk profile for VTE development in ill neonates. In addition, the neonatal hemostatic system is different from that of older children and adults...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28629237/improved-pregnancy-outcome-following-earlier-splenectomy-in-women-with-immune-thrombocytopenia-a-5-year-observational-study
#3
Mohamed Rezk, Alaa Masood, Ragab Dawood, Mahmoud Emara, Hanan El-Sayed
OBJECTIVE: to assess prospectively the maternal and fetal outcome in women with immune thrombocytopenic purpura (ITP) who undergone earlier splenectomy compared to women on medical therapy. METHODS: a 5-year observational study included pregnant women in the first trimester previously diagnosed with primary ITP with 74 patients underwent splenectomy before pregnancy and 86 patients on medical therapy. Patients were followed throughout pregnancy and labor to record their obstetric outcome...
June 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28625868/distinct-characteristics-of-neonatal-platelet-reactivity
#4
REVIEW
Belay Tesfamariam
Platelets undergo a process of developmental maturation, and hence its regulation of vascular integrity and control of hemostasis at various stages of neonatal ages deserves better characterization. Functional assays for platelets require a larger volume of blood than what is feasible to collect in neonates, creating a technical hurdle that has been a challenge to investigate neonatal platelets. For this reason, the current knowledge of neonatal platelet function has been based on studies from cord blood-derived platelets as a surrogate for neonatal peripheral blood...
June 15, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28610547/human-plasma-rich-in-growth-factors-improves-survival-and-neurite-outgrowth-of-spiral-ganglion-neurons-in-vitro
#5
Michael Stolle, Jennifer Schulze, Ariane Römer, Thomas Lenarz, Martin Durisin, Athanasia Warnecke
BACKGROUND: Platelet-rich and platelet poor plasma (PRP and PPP) are autologous preparations from peripheral blood and contain several growth factors and cytokines involved in tissue repair. Although their neuroprotective and -regenerative properties have been already described, little is known about their effects in the inner ear. We therefore examined the effects of PRP and PPP on spiral ganglion neurons (SGN) in vitro. RESULTS: For all experiments, spiral ganglia were isolated from neonatal rats and were cultured in serum-free medium...
June 13, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28601030/aggressive-gastrointestinal-food-allergy-in-neonates-and-its-possible-relationship-to-necrotizing-enterocolitis
#6
Kazuto Suda, Toshihiro Yanai, Miki Toma, Tsubasa Aiyoshi, Takato Sasaki, Toshihiro Muraji
INTRODUCTION: The incidence of gastrointestinal food allergy (FA) in neonates is increasing. Despite this, cases of patients with gastrointestinal FA who develop necrotizing enterocolitis (NEC) requiring laparotomy are extremely rare. PRESENTATION OF CASE: We describe two cases that presented with bloody stool with a probable diagnosis of FA as eosinophils were positive in the stool at onset. Both cases failed conservative treatment. Jejunostomy and ileostomy were performed in both cases due to secondary NEC with underlying acute FA...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28596653/neonatal-outcomes-of-pregnancy-with-immune-thrombocytopenia
#7
Nuriye Aslı Melekoğlu, Ali Bay, Elif H Aktekin, Mehmet Yilmaz, Ercan Sivasli
Neonates born to mothers with immune thrombocytopenia (ITP) have an increased risk for neonatal thrombocytopenia and hemorrhagic complications. The aim of this study was to determine the maternal and neonatal outcomes of pregnancies with ITP and also to identify risk factors that predicts neonatal thrombocytopenia. We performed a retrospective analysis of 40 pregnancies with ITP and their 40 neonates. Among the 40 neonates, thrombocytopenia (platelet count of less than 150 × 10(9)/L) was detected in 15 neonates (37...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28596650/role-of-plasma-fibrinogen-in-diagnosis-and-prediction-of-short-term-outcome-in-neonatal-sepsis
#8
Piyali Mitra, Debasish Guha, Shankha S Nag, Badal C Mondal, Sayantan Dasgupta
The study was carried out to determine the role of plasma fibrinogen in diagnosis of neonatal sepsis and to evaluate its role in predicting short term outcome. Sixty five neonates with clinical features suggestive of neonatal sepsis were included in this study. Seventy five neonates served as the control group. Plasma fibrinogen, prothrombin time, activated partial thromboplastin time and platelet counts were performed in all the neonates. Cut-off value of plasma fibrinogen for diagnosis of neonatal sepsis was determined with the help of receiver operating characteristic curve...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28561420/cab4b-the-first-human-platelet-antigen-carried-by-gpix-discovered-in-a-context-of-severe-neonatal-thrombocytopenia
#9
V Jallu, T Beranger, F Bianchi, C Casale, C Chenet, N Ferre, S Philippe, J Quesne, C Martageix, R Petermann
BACKGROUND: After 3 miscarriages, a 39-year-old woman gave birth at 1 year interval to 2 severely thrombocytopenic neonates (4 and 33 G/L) with intracranial haemorrhages. Transfusion of platelets concentrates corrected thrombocytopenias. The outcome was favourable for the 1(st) child but the second one died 10 days after caesarean delivery (31 WG + 6 days). METHODS: Serological studies were performed using MAIPA and flow cytometry techniques. Human platelet antigens (HPA) genotyping was done by using the BioArray HPA BeadChip and PCR-SSP techniques...
May 31, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28553148/severe-preeclampsia-and-eclampsia-incidence-complications-and-perinatal-outcomes-at-a-low-resource-setting-mpilo-central-hospital-bulawayo-zimbabwe
#10
Solwayo Ngwenya
BACKGROUND: Severe preeclampsia is a disorder of pregnancy characterized by high blood pressure and significant proteinuria after 20 weeks gestation. Severe preeclampsia and eclampsia have considerable adverse impacts on maternal, fetal, and neonatal health especially in low-resource countries. Hypertensive disorders of pregnancy are the third leading cause of maternal deaths in Sub-Saharan Africa. Significant avoidable maternal and neonatal morbidity and mortality may result. OBJECTIVES: This study aimed 1) to determine the incidence of severe preeclampsia/eclampsia in a low-resource setting; 2) to determine the maternal complications of severe preeclampsia/eclampsia in a low-resource setting; 3) to determine the perinatal outcomes of severe preeclampsia/eclampsia in a low-resource setting...
2017: International Journal of Women's Health
https://www.readbyqxmd.com/read/28548028/developmental-differences-between-newborn-and-adult-mice-in-response-to-romiplostim
#11
Katherine A Sparger, Haley Ramsey, Viola Lorenz, Zhi-Jian Liu, Henry A Feldman, Nan Li, Tahirih Laforest, Martha C Sola-Visner
Thrombocytopenia is frequent among sick neonates. While most cases are transient, some neonates experience prolonged and severe thrombocytopenia. These infants often pose diagnostic and therapeutic challenges, and may receive large numbers of platelet transfusions. Romiplostim (ROM) is a thrombopoietin (TPO)-receptor-agonist approved for treatment of adults with chronic immune thrombocytopenia (ITP). The immature platelet fraction (IPF) is a novel measure of newly produced platelets, which could aid with the diagnostic evaluation of thrombocytopenic neonates...
May 26, 2017: Platelets
https://www.readbyqxmd.com/read/28530325/-diversity-in-product-selection-and-thresholds-for-platelets-transfusion-in-neonates-and-premature-infants
#12
Shraga Aviner, Ornit Cohen, Faid El-Ubra, Vered Yahalom, Haim Bibi, Shmuel Zangen
INTRODUCTION: Many premature and full-term newborns receive prophylactic platelet transfusions to prevent bleeding, particularly the most prevalent one, i.e, intracranial hemorrhages. However, the platelet count threshold above which bleeding is prevented and the efficacy of platelet transfusion in thrombocytopenic neonates, have yet to be established. Therefore, inter-Neonatal Intensive Care Units (NICU) variations in treatment indications and practices are expected. Considerable inter-NICU variations will emphasize the need for guidelines on platelet transfusions to neonates and premature infants...
August 2016: Harefuah
https://www.readbyqxmd.com/read/28518345/severe-neonatal-alloimmune-thrombocytopenia-caused-by-maternal-sensitization-against-a-new-low-frequency-alloantigen-dom-b-located-on-platelet-glycoprotein-iiia
#13
Mia J Sullivan, Randy Kuhlmann, Julie A Peterson, Brian R Curtis
No abstract text is available yet for this article.
May 18, 2017: Transfusion
https://www.readbyqxmd.com/read/28515471/clinical-and-molecular-investigation-of-14-japanese-patients-with-complete-tfp-deficiency-a-comparison-with-caucasian-cases
#14
Ryosuke Bo, Kenji Yamada, Hironori Kobayashi, Purevsuren Jamiyan, Yuki Hasegawa, Takeshi Taketani, Seiji Fukuda, Ikue Hata, Yo Niida, Yosuke Shigematsu, Kazumoto Iijima, Seiji Yamaguchi
Mitochondrial trifunctional protein (TFP) deficiency is an inherited metabolic disorder of mitochondrial fatty-acid oxidation. Isolated long-chain 3-hydroxyacyl-CoA dehydrogenase deficiency is often reported in Caucasian countries due to a common mutation. However, the molecular and clinical basis of complete TFP deficiency has not been extensively reported. In this study, 14 Japanese cases (13 families) with complete TFP deficiency, including 9 previously reported cases, were analyzed to clarify the clinical and molecular characteristics of TFP deficiency...
May 18, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28505011/in-vitro-assessment-of-the-effect-of-dabigatran-on-thrombosis-of-adult-and-neonatal-plasma-comparisons-using-thromboelastography-and-microscopic-visualization-of-fibrin-clot-structure
#15
Fadi F Nossair, Howard H W Chan, Jorell Gantioqui, Helen M Atkinson, Leslie R Berry, Anthony K C Chan
: Thromboelastography (TEG) is a global assay used for evaluating features of clot formation in vitro. Dabigatran is a reversible direct inhibitor of thrombin that has not been studied in neonates using a sophisticated global assay, such as TEG. Neonatal hemostasis differs from adult hemostasis in both quantitative and qualitative characteristics. Our aim was to compare the TEG clotting profile of neonatal and adult platelet-poor plasma when exposed to different concentrations of dabigatran. We used commercially collected adult pooled plasma and neonatal cord blood collected from placentas of healthy full term newborns...
May 12, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28496360/epidural-anesthesia-for-labor-and-delivery-in-a-patient-with-may-hegglin-anomaly-a-case-report
#16
Annas Muhammad Muzannar, Mohammed Al Harbi, Raza Rathore, Nasser Tawfeeq, Freddie Wambi, Nasir Mahmood, Sonia Albrechtova, Vassilios Dimitriou
We report a case of May-Hegglin anomaly (MHA) in a woman who had a successful labor and delivery under epidural anesthesia. MHA is an inherited thrombocytopenia easily misdiagnosed as idiopathic (immune) thrombocytopenic purpura (ITP). Early and appropriate diagnosis of MHA during pregnancy is essential for optimal maternal and neonatal delivery outcome. Additionally, it can avoid unnecessary diagnostic studies, such as bone marrow aspiration and biopsy, and even harmful therapies with corticosteroids, immunosuppressive agents, and splenectomy...
2017: Local and Regional Anesthesia
https://www.readbyqxmd.com/read/28481226/neonatal-expression-of-rna-binding-protein-igf2bp3-regulates-the-human-fetal-adult-megakaryocyte-transition
#17
Kamaleldin E Elagib, Chih-Huan Lu, Goar Mosoyan, Shadi Khalil, Ewelina Zasadzińska, Daniel R Foltz, Peter Balogh, Alejandro A Gru, Deborah A Fuchs, Lisa M Rimsza, Els Verhoeyen, Miriam Sansó, Robert P Fisher, Camelia Iancu-Rubin, Adam N Goldfarb
Hematopoietic transitions that accompany fetal development, such as erythroid globin chain switching, play important roles in normal physiology and disease development. In the megakaryocyte lineage, human fetal progenitors do not execute the adult morphogenesis program of enlargement, polyploidization, and proplatelet formation. Although these defects decline with gestational stage, they remain sufficiently severe at birth to predispose newborns to thrombocytopenia. These defects may also contribute to inferior platelet recovery after cord blood stem cell transplantation and may underlie inefficient platelet production by megakaryocytes derived from pluripotent stem cells...
June 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28458583/current-perspectives-on-fetal-and-neonatal-alloimmune-thrombocytopenia-increasing-clinical-concerns-and-new-treatment-opportunities
#18
REVIEW
Heidi Tiller, Anne Husebekk, Maria Therese Ahlen, Tor B Stuge, Bjørn Skogen
Differences in platelet type between the fetus and the mother can lead to maternal immunization and destruction of the fetal platelets, a condition named fetal and neonatal alloimmune thrombocytopenia (FNAIT). FNAIT is reported to occur in ~1 per 1,000 live born neonates. The major risk is intracranial hemorrhage in the fetus or newborn, which is associated with severe neurological complications or death. Since no countries have yet implemented a screening program to detect pregnancies at risk, the diagnosis is typically established after the birth of a child with symptoms...
2017: International Journal of Women's Health
https://www.readbyqxmd.com/read/28436749/differential-diagnosis-of-neonatal-alloimmune-thrombocytopenia-type-2b-von-willebrand-disease
#19
Mathilde Penel-Page, Sandrine Meunier, Mathilde Fretigny, Sandra Le Quellec, Pierre Boisseau, Christine Vinciguerra, Catherine Ternisien, Lucia Rugeri
At birth, severe thrombocytopenia without context of infection should mainly suggest neonatal alloimmune thrombocytopenia (NAIT), especially in case of a platelet count below 20 GL(-1). We report two cases of severe neonatal thrombocytopenia, first suspected as being NAIT. Both had a platelet count below 20 GL(-1) with platelet clumps. The absence of alloantibodies and failure of platelet transfusion and intravenous immunoglobulins to improve the platelet count led to question the diagnosis and to evoke inherited bleeding disorders...
April 24, 2017: Platelets
https://www.readbyqxmd.com/read/28432736/severe-primary-autoimmune-thrombocytopenia-itp-in-pregnancy-a-national-cohort-study
#20
A Care, S Pavord, M Knight, Z Alfirevic
OBJECTIVE: To quantify UK incidence of severe ITP in pregnancy, determine current treatment strategies and establish maternal and neonatal morbidity and mortality associated with severe ITP in pregnancy. DESIGN: A prospective national cohort study SETTING: United Kingdom POPULATION: Women with severe ITP; defined as platelets <50 x 10(9) /l in pregnancy or antenatal treatment of isolated low platelets. METHODS: Data collected via United Kingdom Obstetric Surveillance System (UKOSS) between 1(st) June 2013-31(st) January 2015 from all UK Consultant led obstetric units...
April 22, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
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