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Immunology neonates

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https://www.readbyqxmd.com/read/29229361/a-literature-review-on-maternal-fetal-and-reproductive-disorders-of-toxoplasma-gondii-infection
#1
REVIEW
Shirzad Fallahi, Ali Rostami, Malihe Nourollahpour Shiadeh, Hamed Behniafar, Shahrokh Paktinat
BACKGROUND: Toxoplasma gondii infection is one of the most prevalent infectious disease with worldwide distribution. Congenital toxoplasmosis is annually responsible for 1.20 million disability-adjusted life years around the world, but often it is overlooked many countries. METHODS: We performed an updated review to summarize the current researches on fetal, neonatal and maternal consequences of T. gondii infection and also adverse effects of toxoplasmosis on women reproductive organs...
December 8, 2017: Journal of Gynecology Obstetrics and Human Reproduction
https://www.readbyqxmd.com/read/29211052/maternal-vaccination-immunization-of-sows-during-pregnancy-against-etec-infections
#2
REVIEW
Jose Matías, Melibea Berzosa, Yadira Pastor, Juan M Irache, Carlos Gamazo
The immunology of pregnancy is an evolving consequence of multiple reciprocal interactions between the maternal and the fetal-placental systems. The immune response must warrant the pregnancy outcome (including tolerance to paternal antigens), but at the same time, efficiently respond to pathogenic challenges. Enterotoxigenic Escherichia coli (ETEC) strains are a major cause of illness and death in neonatal and recently weaned pigs. This review aims to give an overview of the current rationale on the maternal vaccination strategies for the protection of the newborn pig against ETEC...
December 6, 2017: Vaccines
https://www.readbyqxmd.com/read/29209311/codevelopment-of-microbiota-and-innate-immunity-and-the-risk-for-group-b-streptococcal-disease
#3
REVIEW
Julia Kolter, Philipp Henneke
The pathogenesis of neonatal late-onset sepsis (LOD), which manifests between the third day and the third month of life, remains poorly understood. Group B Streptococcus (GBS) is the most important cause of LOD in infants without underlying diseases or prematurity and the third most frequent cause of meningitis in the Western world. On the other hand, GBS is a common intestinal colonizer in infants. Accordingly, despite its adaption to the human lower gastrointestinal tract, GBS has retained its potential virulence and its transition from a commensal to a dangerous pathogen is unpredictable in the individual...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29204137/microbial-mechanistic-insight-into-the-role-of-inulin-in-improving-maternal-health-in-a-pregnant-sow-model
#4
Pan Zhou, Yang Zhao, Pan Zhang, Yan Li, Taotao Gui, Jun Wang, Chao Jin, Lianqiang Che, Jian Li, Yan Lin, Shengyu Xu, Bin Feng, Zhengfeng Fang, De Wu
General consumption of "western diet" characterized by high refined carbohydrates, fat and energy intake has resulted in a global obesity epidemics and related metabolic disturbance even for pregnant women. Pregnancy process is accompanied by substantial hormonal, metabolic and immunological changes during which gut microbiota is also remarkably remodeled. Dietary fiber has been demonstrated to have a striking role in shifting the microbial composition so as to improve host metabolism and health in non-pregnant individuals...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29203386/procalcitonin-the-marker-of-pediatric-bacterial-infection
#5
Mohammad Yousef Memar, Mojtaba Varshochi, Behrooz Shokouhi, Mohammad Asgharzadeh, Hossein Samadi Kafil
Timely recognition of systemic bacterial infections in pediatric care setting is the basis for effective treatment and control. This review provides an overview of procalcitonin (PCT) as an early marker for the detection of severe, invasive bacterial infection in children. Almost all articles on biochemical property and clinical studies in PubMed and Scopus databases regarding their use in pediatric infections and the use of PCT as a marker of bacterial infections were examined. Various methods and analyzers are currently available for the evaluation of PCT...
December 1, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29197124/breast-milk-cells-trafficking-induces-microchimerism-mediated-immune-system-maturation-in-the-infant
#6
REVIEW
Jean-Pierre Molès, Edouard Tuaillon, Chipepo Kankasa, Anne-Sophie Bedin, Nicolas Nagot, Arnaud Marchant, Joann M McDermid, Philippe Van de Perre
Initiating breastfeeding within the first hour of life confers an important benefit in terms of child mortality and severe morbidity. Intestinal permeability to ingested macromolecules and immunoglobulins is limited to the first days of human life. These exchanges cease in the very early post-partum period but may increase beyond the neonatal period in response to local inflammation or introduction of a weaning food. From animal- and limited human-based observations, compelling evidence points out to breast milk cells also trafficking from mother to infant mucosal tissues and participating to the maternal microchimerism...
December 2, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/29187105/immune-abnormalities-in-patients-with-single-ventricle-circulation-precede-the-fontan-procedure
#7
Lubica Kovacikova, Veronika Krasnanova, Peter Skrak, Martin Zahorec, Andrea Kantorova, Jana Semberova, Ljuba Bacharova
BACKGROUND: Immune abnormalities are common in Fontan patients with protein-losing enteropathy. Limited data exist on immune function of other patients with single ventricle circulation. METHODS: This prospective cohort study evaluated immunologic characteristics of children with single ventricle circulation from neonatal age up to early post-Fontan period. RESULTS: Low leukocyte counts were observed in half of the patients prior to bidirectional Glenn and Fontan surgery...
November 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29186903/bacteriological-and-immunological-profiling-of-meconium-and-fecal-samples-from-preterm-infants-a-two-year-follow-up-study
#8
Marta Gómez, Laura Moles, Irene Espinosa-Martos, Gerardo Bustos, Willem M de Vos, Leónides Fernández, Juan M Rodríguez, Susana Fuentes, Esther Jiménez
An abnormal colonization pattern of the preterm gut may affect immune maturation and exert a long-term influence on the intestinal bacterial composition and host health. However, follow-up studies assessing the evolution of the fecal microbiota of infants that were born preterm are very scarce. In this work, the bacterial compositions of fecal samples, obtained from sixteen 2-year-old infants were evaluated using a phylogenetic microarray; subsequently, the results were compared with those obtained in a previous study from samples of meconium and feces collected from the same infants while they stayed in the neonatal intensive care unit (NICU)...
November 27, 2017: Nutrients
https://www.readbyqxmd.com/read/29176145/autoimmune-associated-congenital-heart-block-a-new-insight-in-fetal-life
#9
REVIEW
Kai-Yu Zhou, Yi-Min Hua
OBJECTIVE: Congenital heart block (CHB) is a rare but life-threatening disorder. More than half of CHB cases are associated with maternal autoimmune, which are termed as autoimmune-associated CHB. This review summarized the recent research findings in understanding autoimmune-associated CHB, discussed the current diagnostic approaches and management strategies, and summarized the problems and future directions for this disorder. DATA SOURCES: We retrieved the articles published in English from the PubMed database up to January 2017, using the keywords including "Autoimmune-associated", "Autoimmune-mediated", and "Congenital heart block"...
December 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/29166972/long-term-sex-differential-effects-of-neonatal-vitamin-a-supplementation-on-in-vitro-cytokine-responses
#10
Kristoffer J Jensen, Mia J Søndergaard, Andreas Andersen, Cesario Martins, Christian Erikstrup, Peter Aaby, Katie L Flanagan, Christine Stabell Benn
High-dose vitamin A supplementation (VAS) may affect mortality to infectious diseases in a sex-differential manner. Here, we analysed the long-term immunological effects of neonatal vitamin A supplementation (NVAS) in 247 children, who had been randomly allocated to 50 000 or 25 000 IU vitamin A (15mg and 7·5mg retinol equivalents, respectively) or placebo at birth. At 4-6 months of age, we assessed bacille Calmette-Guérin (BCG) scarification, and we analysed in vitro responses of TNF-α, IL-5, IL-10, IL-13 and IFN-γ in whole blood stimulations to phytohaemagglutinin (PHA), purified protein derivative (PPD), tetanus toxoid and lipopolysaccharide...
November 23, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29128634/vitamin-d-receptor-vdr-polymorphisms-are-associated-to-spontaneous-preterm-birth-and-maternal-aspects
#11
N R Javorski, C A D Lima, L V C Silva, S Crovella, J de Azêvedo Silva
Preterm birth (PTB) is featured by less than 37weeks of gestational age or fewer than 259days since the first day from the last menstrual period. Complications of PTB are the major cause of neonatal deaths, several factors are linked to PTB increased risk including immunological and genetics. Vitamin D plays an important role in immune response modulation and its action occurs through the vitamin D receptor (VDR), which recently has been described as overexpressed in human placenta during the pregnancy. Herein we assessed two single nucleotide polymorphisms (SNPs) FokI (rs2228570 A>G) and Cdx-2 (rs11568820 T>C), within VDR, using TaqMan fluorogenic probes, and differential susceptibility to SPTB...
November 8, 2017: Gene
https://www.readbyqxmd.com/read/29125097/historical-and-contemporary-aspects-of-maternal-immunity-in-swine
#12
Korakrit Poonsuk, Jeff Zimmerman
Maternal immunity plays a pivotal role in swine health and production because piglets are born agammaglobulinemic and with limited cell-mediated immunity, i.e. few peripheral lymphoid cells, immature lymphoid tissues, and no effector and memory T-lymphocytes. Swine do not become fully immunologically competent until about 4 weeks of age, which means that their compromised ability to respond to infectious agents during the first month of life must be supplemented by maternal immune components: (1) circulating antibodies derived from colostrum; (2) mucosal antibodies from colostrum and milk; and (3) immune cells provided in mammary secretions...
November 10, 2017: Animal Health Research Reviews
https://www.readbyqxmd.com/read/29124321/vaccine-responses-in-newborns
#13
REVIEW
Anja Saso, Beate Kampmann
Immunisation of the newborn represents a key global strategy in overcoming morbidity and mortality due to infection in early life. Potential limitations, however, include poor immunogenicity, safety concerns and the development of tolerogenicity or hypo-responsiveness to either the same antigen and/or concomitant antigens administered at birth or in the subsequent months. Furthermore, the neonatal immunological milieu is polarised towards Th2-type immunity with dampening of Th1-type responses and impaired humoral immunity, resulting in qualitatively and quantitatively poorer antibody responses compared to older infants...
November 9, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/29120575/neutrophil-cd11b-cd64-and-lipocalin-2-early-diagnostic-markers-of-neonatal-sepsis
#14
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
https://www.readbyqxmd.com/read/29115600/messenger-rna-sequencing-reveals-similar-mechanisms-between-neonatal-and-acute-respiratory-distress-syndrome
#15
Hua Mei, Yuheng Zhang, Chunzhi Liu, Yayu Zhang, Chunli Liu, Dan Song, Chun Xin, Jing Wang, Jonathan Josephs-Spaulding, Yan Zhu, Feng Tang
Hypoxemia and hypercarbia resulting from a lack of surfactant is considered to be the primary mechanism underlying neonatal respiratory distress syndrome (NRDS). Surfactant replacement therapy may mitigate the symptoms of the disease by decreasing the surface tension of alveoli and facilitating inflation. However, surfactant serves an additional role in immunological processes. Therefore, it may be hypothesized that mechanisms of NRDS involving surfactant exert additional functions to promoting alveolar inflation...
October 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29108433/the-human-milk-oligosaccharides-are-not-affected-by-pasteurization-and-freeze-drying
#16
Won-Ho Hahn, Jaehan Kim, Seunghyun Song, Suyeon Park, Nam Mi Kang
OBJECTIVES: Human milk oligosaccharides (HMOs) are known as important factors in neurologic and immunologic development of neonates. Moreover, freeze-drying seems to be a promising storage method to improve the processes of human milk banks. However, the effects of pasteurization and freeze-drying on HMOs were not evaluated yet. The purpose of this study is to analyze and compare the HMOs profiles of human milk collected before and after the pasteurization and freeze-drying. METHODS: Totally nine fresh human milk samples were collected from three healthy mothers at the first, second, and third week after delivery...
November 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29107071/role-of-tlr4-in-olfactory-based-spatial-learning-activity-of-neonatal-mice-after-developmental-exposure-to-diesel-exhaust-origin-secondary-organic-aerosol
#17
Nay Chi Nway, Yuji Fujitani, Seishiro Hirano, Ohn Mar, Tin-Tin Win-Shwe
Exposure to ambient air pollutants has been reported to have various adverse health impacts. Ambient particulate matter comprises primary particles released directly via engine exhaust and secondary organic aerosols (SOAs) formed from oxidative reactions of the ultrafine particle fraction of diesel exhaust (DE). Toll-like receptor 4 (TLR4) is well known to initiate the inflammatory cascade in the central nervous system. However, whether and how DE and DE-SOA exposure influences TLR4 signaling in the immature brain remains unclear...
October 26, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/29091144/analysis-of-colostrum-iga-against-bacteria-involved-in-neonatal-infections
#18
Elizabeth Moreira Dias, Denise Bertulucci Rocha Rodrigues, Vinícius Rangel Geraldo-Martins, Ruchele Dias Nogueira
OBJECTIVE: To describe e compare the specificity of IgA antibodies against bacteria extract of Klebsiella pneumoniae , Staphylococcus aureus , Escherichia coli , and Salmonella enteritidis . METHODS: Colostrum samples were aseptically collected in the first 12 hours after C-section delivery. The specificity of IgA against bacteria extracts was analyzed by the Western blot. RESULTS: The findings showed proteins of high molecular weight frequently detectable in the samples...
July 2017: Einstein
https://www.readbyqxmd.com/read/29062247/frequency-of-mycobacterium-bovis-and-mycobacteria-in-primary-immunodeficiencies
#19
Ezgi Ulusoy, Neslihan Edeer Karaca, Güzide Aksu, Cengiz Çavuşoğlu, Necil Kütükçüler
AIM: Susceptibility to mycobacterial diseases is observed in some primary immunodeficiency diseases. In this study, we aimed to evaluate mycobacterial infections in primary immunodeficiency diseases. MATERIAL AND METHODS: Patients under follow-up by Ege University Pediatric Immunology Department for severe combined and combined immunodeficiencies, interleukin 12/ interferon gamma receptor deficiency, nuclear factor kappa-beta essential modulator deficiency and chronic granulomatosis disease were evaluated retrospectively in terms of the frequency and characteristics of mycobacterial infections using a questionnaire form for demographic properties, clinical features and laboratory tests...
September 2017: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/28979702/chikusetsu-saponin-iva-attenuates-isoflurane-induced-neurotoxicity-and-cognitive-deficits-via-sirt1-erk1-2-in-developmental-rats
#20
Xi Fang, Qiang Han, Shiyong Li, Yilin Zhao, Ailin Luo
Inhalation anesthetics isoflurane may increase the risk of neurotoxicity and cognitive deficiency at postnatal and childhood. Chikusetsu saponin IVa (chIV) is a plant extract compound, which could possessed extensive pharmacological actions of central nervous system, cardia-cerebrovascular system, immunologic system and treatment and prevention of tumor. In our study, we investigated the neuroprotective effect of chIV on isoflurane-induced hippocampal neurotoxicity and cognitive function impairment in neonatal rats...
2017: American Journal of Translational Research
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