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neutrophil sepsis neonatal

Mahendiran K, Prerna Batra, M M A Faridi, N P Singh
BACKGROUND:  There is a lack of definite consensus on indications for initiating antibiotics in neonates with meconium aspiration syndrome (MAS), instigating researchers to search for a biomarker that can help differentiate MAS from MAS with bacterial infection. OBJECTIVE:  Our primary objective was to compare serum procalcitonin (PCT) levels in full-term vigorous neonates having MAS with or without bacterial infection. MATERIALS AND METHODS:  Seventy term vigorous neonates with diagnosis of MAS were enrolled...
December 29, 2017: American Journal of Perinatology
Laura W Hansen, Asha Jacob, Weng Lang Yang, Alexandra C Bolognese, Jose Prince, Jeffrey M Nicastro, Gene F Coppa, Ping Wang
INTRODUCTION: Sepsis is the third leading cause of morbidity and mortality in neonates. Sepsis in neonates is characterized as the systemic inflammation owing to infection within the first 28days after birth. The molecular mechanism causing the exaggerated inflammation phenotype in neonates has not been completely elucidated. Receptor interacting protein kinase 3 (RIPK3) is a protein identified as a mediator in programmed necrosis or necroptosis. We hypothesize that RIPK3 could be responsible for the inflammatory response in neonates and that deficiency in the RIPK3 protein attenuates inflammation and organ injury in neonatal sepsis...
November 23, 2017: Journal of Pediatric Surgery
Shelley M Lawrence, Jessica Lauren Ruoss, James L Wynn
Over the last few years, scientific interest in the cytokine IL-17A has intensified as its role in human health and disease has been elucidated. Discovered almost a quarter century ago, IL-17A is known to have poor biologic activity when acting alone, but attains robust actions when working synergistically with potent mediators of proinflammatory immune responses, such as IL-6 and IL-8. IL-17A is produced by specialized innate immune cells that protect host barriers from the outside world. Like sentries, these innate immune cells can "sound the alarm" through increased production of IL-17A, causing activation and recruitment of primed neutrophils and monocytes when pathogens escape initial host defenses...
December 15, 2017: American Journal of Reproductive Immunology: AJRI
Emrah Can, Şahin Hamilcikan, Ceren Can
OBJECTIVE: The purpose of this study was to investigate the relationship between neonate early-onset sepsis (EOS) and the neutrophil to lymphocyte ratio (NLR) and the platelet to lymphocyte ratio (PLR) of term neonates. MATERIALS AND METHODS: This prospective observational study was conducted with term neonates diagnosed with EOS compared with 44 healthy controls. Exclusion criteria were prematurity, postmaturity, small or large for gestational age according to week of pregnancy, preeclampsia, gestational diabetes mellitus, chorioamnionitis, congenital major anomalies, and cyanotic congenital heart disease...
December 6, 2017: Journal of Pediatric Hematology/oncology
Abeer Sheneef, Tamer Mohamed, Naglaa F Boraey, Mostafa A Mohammed
Neonatal sepsis remains a global health problem particularly in the developing countries. Its diagnosis remains one of the most difficult issues in clinical medicine. Many immunologic markers including neutrophils CD11b and CD 64 and Lipocalin-2 have been tested as biomarkers of neonatal sepsis. The aim of the present study was to assess the value of these markers for early diagnosis of neonatal sepsis. The study included 60 neonates with suspected neonatal sepsis and 20 apparently healthy controls. Lipocalin-2 serum level was assessed by ELISA while neutrophils CD11b and CD64 expressions were evaluated by flow cytometry...
January 2017: Egyptian Journal of Immunology
Senem Alkan Ozdemir, Esra Arun Ozer, Ozkan Ilhan, Sumer Sutcuoglu
BACKGROUND: The neutrophil to lymphocyte ratio (NLR) is an easily accessible biomarker that has been reported to represent disease severity in adult trials. The aim of this study was to evaluate the relationship between culture positiveness and NLR in cases where the reason of sepsis was considered, and to foresight an idea about the active agents. METHODS: Preterm infants with birth weights ≤1500 g and/or ≤32 gestational weeks were eligible for this study...
October 21, 2017: Journal of Clinical Laboratory Analysis
Jaimar C Rincon, Angela L Cuenca, Steven L Raymond, Brittany Mathias, Dina C Nacionales, Ricardo Ungaro, Philip A Efron, James L Wynn, Lyle L Moldawer, Shawn D Larson
The high mortality in neonatal sepsis has been related to both quantitative and qualitative differences in host protective immunity. Especially in the premature neonate where outcomes from sepsis are so dismal, pretreatment strategies to prevent sepsis have received inadequate consideration. Aluminum-based adjuvants (alum) are currently used in many pediatric vaccines, but their use as an innate immune stimulant alone has not been well studied. We asked whether pre-treatment with alum adjuvant alone could improve outcome and host innate immunity in neonatal mice given polymicrobial sepsis...
October 20, 2017: Clinical and Experimental Immunology
Kalavakuru Mouna, Shilpa Manigatta Doddagowda, Krishnappa Junjegowda, Latha Krishnamurthy
INTRODUCTION: Pregnancy is a physiological phenomenon. However, some women develop problems during pregnancy period, which puts both the mother's and the foetus health at risk. Hypertensive disorders of pregnancy are the type of the maternal diseases that can cause the most detrimental effects to the mother and foetus. AIMS: To determine the haematological parameters in neonates born to preeclamptic mothers. MATERIALS AND METHODS: It was a prospective case control study carried out on neonates born to preeclamptic mothers in our institute from March 2016 to November 2016...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
Ji Dai, Wenjie Jiang, Zhigang Min, Jian Yang, Yongfei Tan, Tieliang Ma, Zhijun Ge
BACKGROUND: Neutrophil CD64 (nCD64) is a promising marker for diagnosing bacterial infections. Several studies have investigated the performance of nCD64 for diagnosing neonatal sepsis and the results are variable. Interest in nCD64 for detecting serious bacterial infections is increasing rapidly. OBJECTIVES: The aim of the present study was to carry out a meta-analysis to systematically evaluate the diagnostic accuracy of nCD64 in neonatal sepsis. As far as the authors know, no previous studies have undertaken this...
March 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Erica Boldenow, Claire Gendrin, Lisa Ngo, Craig Bierle, Jay Vornhagen, Michelle Coleman, Sean Merillat, Blair Armistead, Christopher Whidbey, Varchita Alishetti, Veronica Santana-Ufret, Jason Ogle, Michael Gough, Sengkeo Srinouanprachanh, James W MacDonald, Theo K Bammler, Aasthaa Bansal, H Denny Liggitt, Lakshmi Rajagopal, Kristina M Adams Waldorf
Preterm birth is a leading cause of neonatal morbidity and mortality. Although microbial invasion of the amniotic cavity (MIAC) is associated with most early preterm births, the temporal events that occur during MIAC and preterm labor are not known. Group B streptococci (GBS) are β-hemolytic, Gram-positive bacteria, which commonly colonize the vagina but have been recovered from the amniotic fluid in preterm birth cases. To understand temporal events that occur during MIAC, we used a chronically catheterized nonhuman primate model that closely emulates human pregnancy...
October 14, 2016: Science Immunology
Dao-Jian Qin, Zong-Sheng Tang, Shu-Li Chen, Xue-Mei Xu, Shuang-Gen Mao, Shi-Fa Zhang
OBJECTIVE: To investigate the value of combined determination of neutrophil CD64 and procalcitonin (PCT) in the early diagnosis of neonatal bacterial infection. METHODS: According to discharge diagnosis, 37 neonates with bacterial infection were divided into sepsis (n=15) and ordinary infection (non-sepsis) groups (n=22). Twenty-one neonates without infection who were hospitalized during the same period of time were enrolled as the control group. Venous blood samples were collected immediately after admission...
August 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
Ahmed Omran, Abdallah Maaroof, Mai H Saleh, Amina Abdelwahab
OBJECTIVE: To assess the applicability of salivary C-reactive protein (CRP), mean platelet volume (MPV), neutrophil-lymphocyte ratio (NLR), and platelet lymphocyte ratio (PLR) in the diagnosis of neonatal sepsis. METHODS: Prospective case-control study of 70 full-term neonates, 35 with sepsis (20 with proven sepsis and 15 with clinical sepsis) and 35 healthy controls. Serum and salivary CRP concentrations were measured by ELISA while MPV, NLR, and PLR were measured by automated blood cell counter...
July 20, 2017: Jornal de Pediatria
Duc Ninh Nguyen, Allan Stensballe, Jacqueline Cy Lai, Pingping Jiang, Anders Brunse, Yanqi Li, Jing Sun, Carina Mallard, Tom Skeath, Nicholas D Embleton, Janet E Berrington, Per T Sangild
Preterm infants are highly susceptible to late-onset sepsis (LOS) and necrotizing enterocolitis (NEC), but disease pathogenesis and specific diagnostic markers are lacking. Circulating cell-free DNA (cfDNA) and immune cell-derived proteins are involved in multiple immune diseases in adults but have not been investigated in preterm neonates. We explored the relation of circulating neutrophil-associated proteins and cfDNA to LOS and/or NEC. Using a clinically relevant preterm pig model of spontaneous LOS and NEC development, we investigated neutrophil-associated proteins and cfDNA in plasma, together with cytokines in gut tissues...
January 1, 2017: Innate Immunity
Mustafa Aydin, Sumeyye Barut, H Handan Akbulut, Sit Ucar, Aysen Orman
GOALS: To raise awareness of the utility of flow cytometric detection of inflammatory markers in the early diagnosis of neonatal sepsis. PROCEDURES: In accordance with the Töllner scoring system, cases with ≥10 points are accepted as having "clinical sepsis" and cases with 0-4 points as having "no sepsis". The study group consisted of 50 newborns with clinical sepsis as well as a control group of 50 newborns without sepsis. In all cases, blood counts, C-reactive protein (CRP) levels, and procalcitonin (PCT) levels were recorded...
March 2017: Annals of Clinical and Laboratory Science
Yueniu Zhu, Liqun Xu, Jennifer J P Collins, Arul Vadivel, Chanèle Cyr-Depauw, Shumei Zhong, Lars Mense, Marius A Möbius, Bernard Thébaud
Sepsis is the main cause of morbidity and mortality in neonates. Mesenchymal stromal cells (MSCs) are potent immune-modulatory cells. Their effect in neonatal sepsis has never been explored. We hypothesized that human umbilical cord-derived MSCs (hUC-MSCs) improve survival in experimental neonatal sepsis. Sepsis was induced in 3-day-old rats by intravenous injection of Escherichia coli (5 × 10(5)/rat). One hour after infection, rats were treated intravenously with normal saline, hUC-MSCs, or with interferon-γ preconditioned hUC-MSCs (10(7) cells/kg)...
July 15, 2017: Stem Cells and Development
Laura W Hansen, Weng Lang Yang, Alexandra C Bolognese, Asha Jacob, Tracy Chen, Jose M Prince, Jeffrey M Nicastro, Gene F Coppa, Ping Wang
BACKGROUND: Sepsis remains one of the leading causes of infant death worldwide. It is characterized by uncontrolled inflammatory responses due to proven bacterial infection. Despite improvement in supportive care and the availability of effective antibiotics, no specific therapy targeting the dysregulated inflammatory response is available for neonatal sepsis. Milk fat globule epidermal growth factor-factor 8 (MFG-E8) is a secretory glycoprotein abundantly present in human milk. MFG-E8 suppresses the systemic inflammatory responses in adult murine injury models by improving the clearance of dying cells...
August 2017: Surgery
Shelley Melissa Lawrence, Ross Corriden, Victor Nizet
Neonatal and adult neutrophils are distinctly different from one another due to well-defined and documented deficiencies in neonatal cells, including impaired functions, reduced concentrations of microbicidal proteins and enzymes necessary for pathogen destruction, and variances in cell surface receptors. Neutrophil maturation is clearly demonstrated throughout pregnancy from the earliest hematopoietic precursors in the yolk sac to the well-developed myeloid progenitor cells in the bone marrow around the seventh month of gestation...
2017: Frontiers in Pediatrics
Steven L Raymond, Julie A Stortz, Juan C Mira, Shawn D Larson, James L Wynn, Lyle L Moldawer
Despite advances in critical care medicine, neonatal sepsis remains a major cause of morbidity and mortality worldwide, with the greatest risk affecting very low birth weight, preterm neonates. The presentation of neonatal sepsis varies markedly from its presentation in adults, and there is no clear consensus definition of neonatal sepsis. Previous work has demonstrated that when neonates become septic, death can occur rapidly over a matter of hours or days and is generally associated with inflammation, organ injury, and respiratory failure...
2017: Frontiers in Pediatrics
Şahin Hamilçıkan, Emrah Can, Övgü Büke, Meltem Erol, Özlem Bostan Gayret
Objective The objective of this study was to assess the result of intravenous pentoxifylline as an adjunct to antibiotic therapy on mortality and morbidity in very low birth weight (VLBW) preterm neonates with nosocomial sepsis. Methods For the 18 VLBW preterm neonates, as an adjunct therapy to antibiotics regimens, pentoxifylline (5 mg/kg/h for 6 hours) was administered to premature infants with sepsis on 3 successive days. Clinical and laboratory parameters were recorded before and after treatment. Results Following pentoxifylline therapy, the immature-to-total neutrophil ratio and C-reactive protein (CRP) levels were significantly decreased, while the blood pH and base excess were significantly increased (p < 0...
July 2017: American Journal of Perinatology
Jianhui Wang, Jialin Yu, Juan Fan, Yu He, Wenhui Dong, Zhengli Wang
BACKGROUND: The circulating neutrophil count was commonly believed to be influenced by altitude. At present, neutrophil reference ranges (RRs) for very low birth weight (VLBW) neonates are only available from the sea level and from high altitude. This study aimed to construct RRs for neutrophils in VLBW infants in an intermediate-altitude area and assess its usefulness in evaluation for sepsis. METHODS: This was a multicenter retrospective study of 2173 VLBW infants admitted to 20 hospitals in Chongqing in southwest of China with altitude from 1000 to 2600 feet...
2017: PloS One
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