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neonatal immune system

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https://www.readbyqxmd.com/read/28183352/combined-effect-of-bcg-vaccination-and-enriched-environment-promote-neurogenesis-and-spatial-cognition-via-a-shift-in-meningeal-macrophage-m2-polarization
#1
Fangfang Qi, Zejie Zuo, Junhua Yang, Saisai Hu, Yang Yang, Qunfang Yuan, Juntao Zou, Kaihua Guo, Zhibin Yao
BACKGROUND: The spatial learning abilities of developing mice benefit from extrinsic cues, such as an enriched environment, with concomitant enhancement in cognitive functions. Interestingly, such enhancements can be further increased through intrinsic Bacillus Calmette-Guérin (BCG) vaccination. RESULTS: Here, we first report that combined neonatal BCG vaccination and exposure to an enriched environment (Enr) induced combined neurobeneficial effects, including hippocampal long-term potentiation, and increased neurogenesis and spatial learning and memory, in mice exposed to the Enr and vaccinated with BCG relative to those in the Enr that did not receive BCG vaccination...
February 10, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28165494/novel-protective-role-of-myeloid-differentiation-1-in-pathological-cardiac-remodelling
#2
Xiaojv Xiong, Yu Liu, Yang Mei, Jianye Peng, Zhiqiang Wang, Bin Kong, Peng Zhong, Liang Xiong, Dajun Quan, Qi Li, Guangji Wang, He Huang
Myeloid differentiation 1 (MD-1), a secreted protein interacting with radioprotective 105 (RP105), plays an important role in Toll-like receptor 4 (TLR4) signalling pathway. Previous studies showed that MD-1 may be restricted in the immune system. In this study, we demonstrated for the first time that MD-1 was highly expressed in both human and animal hearts. We also discovered that cardiac-specific overexpression of MD-1 significantly attenuated pressure overload-induced cardiac hypertrophy, fibrosis, and dysfunction, whereas loss of MD-1 had the opposite effects...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28162823/mucosal-vaccination-promotes-clearance-of-streptococcus-agalactiae-vaginal-colonization
#3
Jacqueline A Baker, Emma L Lewis, Leah M Byland, Maryam Bonakdar, Tara M Randis, Adam J Ratner
Group B Streptococcus (GBS) is a leading cause of morbidity and mortality in infants, and colonization of the maternal genital tract is the primary risk factor for newborn infection. Despite the importance of mucosal colonization in GBS pathogenesis, relevant host and bacterial factors are incompletely understood. We investigated the role of humoral immunity in clearance of vaginal colonization in vivo. B-cell-deficient mice or those lacking neonatal Fc-receptor, a mediator of IgG transport to the vaginal mucosa, exhibit prolonged GBS vaginal colonization compared to wild type animals...
February 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28161165/supplemental-methionine-choline-or-taurine-alter-in-vitro-gene-network-expression-of-polymorphonuclear-leukocytes-from-neonatal-holstein-calves
#4
M K Abdelmegeid, M Vailati-Riboni, A Alharti, F Batistel, J J Loor
Isolated PMNL from neonatal calves were used to evaluate the effect of Met, choline, and taurine supplementation on mRNA expression of genes related to the Met cycle and innate immunity. Five neonatal Holstein calves (3 wk old) were used for PMNL isolation and in vitro culture. The selected genes were related to the 1-carbon and Met cycles, cell signaling and cytokine mediators, inflammation, antimicrobial and killing mechanism associated genes, immune mediators, adhesion, and pathogen recognition. The results indicated that supplementation of Met, choline, and taurine increased homocysteine synthesis through upregulation of SAHH...
February 1, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28157226/early-exposure-to-thirdhand-cigarette-smoke-affects-body-mass-and-the-development-of-immunity-in-mice
#5
Bo Hang, Antoine M Snijders, Yurong Huang, Suzaynn F Schick, Pin Wang, Yankai Xia, Christopher Havel, Peyton Jacob, Neal Benowitz, Hugo Destaillats, Lara A Gundel, Jian-Hua Mao
Thirdhand smoke (THS) is the fraction of cigarette smoke that persists in indoor environments after smoking. We investigated the effects of neonatal and adult THS exposure on bodyweight and blood cell populations in C57BL/6 J mice. At the end of neonatal exposure, THS-treated male and female mice had significantly lower bodyweight than their respective control mice. However, five weeks after neonatal exposure ended, THS-treated mice weighed the same as controls. In contrast, adult THS exposure did not change bodyweight of mice...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28157136/global-health-of-babies-and-children
#6
Susan Gennaro, Caitlin OʼConnor, Megan Marx
PURPOSE: We provide an overview of the health of neonates, infants, and children around the world. Issues in maximizing neonatal health are examined using the Sustainable Development Goals developed by the United Nations as a framework. RECOMMENDATIONS: Interventions that can help optimize neonatal, infant, and child health in the future are reviewed, including increasing preventative healthcare (immunizations, malaria prevention, exclusive breastfeeding for the first 6 months of life), enhancing point-of-care interventions (including umbilical cord care, antenatal corticosteroids if preterm birth is anticipated, and antibiotic therapy), enhancing nutritional interventions (to decrease diarrheal diseases and decrease wasting, stunting, and underweight), and building systems capacityClinical Implications: In an increasingly global world where wars, climate change, civil unrest, and economic uncertainty all influence health, it is important that nurses understand global health problems common for neonates, infants, and children and current recommendations to enhance their health...
February 1, 2017: MCN. the American Journal of Maternal Child Nursing
https://www.readbyqxmd.com/read/28154564/immunization-of-newborn-mice-accelerates-the-architectural-maturation-of-lymph-nodes-but-aid-dependent-igg-responses-are-still-delayed-compared-to-the-adult
#7
Rosario Munguía-Fuentes, Juan Carlos Yam-Puc, Aarón Silva-Sánchez, Edith Marcial-Juárez, Isis Amara Gallegos-Hernández, Juana Calderón-Amador, Troy D Randall, Leopoldo Flores-Romo
Lymph nodes (LNs) have evolved to maximize antigen (Ag) collection and presentation as well as lymphocyte proliferation and differentiation-processes that are spatially regulated by stromal cell subsets, including fibroblastic reticular cells (FRCs) and follicular dendritic cells (FDCs). Here, we showed that naïve neonatal mice have poorly organized LNs with few B and T cells and undetectable FDCs, whereas adult LNs have numerous B cells and large FDC networks. Interestingly, immunization on the day of birth accelerated B cell accumulation and T cell recruitment into follicles as well as FDC maturation and FRC organization in neonatal LNs...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28141730/-footprints-in-the-bathroom-the-role-of-spirituality-in-patient-diagnosis
#8
Veronica Meneses, Douglas Vanderbilt, Linda Barnes, Marilyn Augustyn
Lucy is a 12-year-old Latina whose mother brought her to the pediatric clinic for help with her anxiety symptoms, "hearing voices," and episodes of "spacing out." Lucy did not cry at birth secondary to vocal cord paralysis and still has the tracheostomy performed at a few days of life. In addition to her neonatal intensive care unit stay, she has been hospitalized for pneumonia. Her mother says she is "sickly" and has a weak immune system due to her asthma symptoms. Lucy also experiences somatic complaints related to gastroesophageal reflux and constipation...
February 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28135671/innate-immune-response-in-neonate-holstein-heifer-calves-fed-fresh-or-frozen-colostrum
#9
Juliana França Dos Reis Costa, Sylvia Marquart Fontes Novo, Camila Costa Baccili, Natália Meirelles Sobreira, David John Hurley, Viviani Gomes
The aim of this research was to evaluate the influence of maternal cells from colostrum on the development and function of the innate immune response in Holstein calves. Calves were divided into 2 groups: COL+ (n=10) received fresh colostrum; and COL- (n=10) which received frozen colostrum containing no viable cells. The calves were assessed before colostrum intake (D0), 48h of age (D2), and weekly from D7 up to D28. Blood samples were collected for analysis of the distribution of leukocytes, cellular phenotype and in vitro granulocyte function...
January 17, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28134705/cutaneous-manifestations-of-systemic-viral-diseases-in-neonates-an-update
#10
Stephanie A Castillo, Anh Khoa Pham, James G Dinulos
PURPOSE OF REVIEW: Dermatologic findings may be the first signs of a neonatal viral infection. This review provides an update of the diagnostic features and therapies for selected viral illnesses [herpes simplex virus (HSV), varicella zoster virus, enterovirus, and Zika virus] that present with cutaneous manifestations in the neonate. RECENT FINDINGS: HSV DNA polymerase chain reaction of plasma and cerebrospinal fluid, routinely used in the diagnosis of neonatal HSV, may have expanded utility in assessing prognosis and acyclovir therapeutic efficacy...
January 27, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28122329/the-conformational-changes-of-zika-virus-methyltransferase-upon-converting-sam-to-sah
#11
Han Zhou, Fenghua Wang, Haofeng Wang, Cheng Chen, Tianqing Zhang, Xu Han, Deping Wang, Chen Chen, Chen Wu, Wei Xie, Zefang Wang, Lei Zhang, Lanfeng Wang, Haitao Yang
An outbreak of Zika virus (ZIKV) infection has been reported in South and Central America and the Caribbean. Neonatal microcephaly potentially associated with ZIKV infection has already caused a public health emergency of international concern. Currently, there are no clinically effective vaccines or antiviral drugs available to treat ZIKV infection. The methyltransferase domain (MTase) of ZIKV nonstructural protein 5 (NS5) can sequentially methylate guanine N-7 and ribose 2'-O to form m7NGpppA2'Om cap structure in the new RNA transcripts...
January 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28097694/serial-cytokine-alterations-and-abnormal-neuroimaging-in-newborn-infants-with-encephalopathy
#12
Fiona M O'Hare, R William G Watson, Amanda O'Neill, Ricardo Segurado, Deirdre Sweetman, Paul Downey, Eoghan Mooney, John Murphy, Veronica Donoghue, Eleanor J Molloy
AIM: Inflammatory cytokines may play a role in the final common pathway in the pathogenesis of hypoxic-ischaemic injury in experimental models. We aimed to profile the systemic pro- and anti-inflammatory response over the first week of life in term infants at risk of neonatal encephalopathy. METHOD: In a tertiary referral university neonatal intensive care unit, serial blood samples were analysed from 41 term infants (requiring resuscitation at birth) in this prospective observational pilot study...
January 17, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28092597/role-of-probiotics-in-nutrition-and-health-of-small-ruminants
#13
M M Abd El-Tawab, I M I Youssef, H A Bakr, G C Fthenakis, N D Giadinis
Small ruminants represent an important economic source in small farm systems and agriculture. Feed is the main component of livestock farming, which has gained special attention to improve animal performance. Many studies have been done to improve feed utilisation through addition of feed additives. For a long period, antibiotics have been widely used as growth promoters in livestock diets. Due to their ban in many countries, search for alternative feed additives has been intensified. Probiotics are one of these alternatives recognised to be safe to the animals...
December 1, 2016: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28092212/systemic-medications-used-in-treatment-of-common-dermatological-conditions-safety-profile-with-respect-to-pregnancy-breast-feeding-and-content-in-seminal-fluid
#14
S M Brown, K A Aljefri, R Waas, P J Hampton
: Prescribing for pregnant or lactating patients and male patients wishing to father children can be a difficult area for dermatologists. There is a lack of review articles of commonly used systemic medications in dermatology with respect to their effects on developing embryogenesis and their potential transfer across the placenta, in breast milk and in seminal fluid. This paper aims to provide an up to date summary of evidence to better equip dermatologists to inform patients about the effects of systemic medications commonly used in dermatology to treat conditions such as atopic dermatitis, psoriasis and acne, on current and future embryogenesis and fertility...
January 16, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/28081328/cytomegalovirus-hepatitis-in-49-pediatric-patients-with-normal-immunity
#15
Hasan Tezer, Saliha Kanık Yüksek, Belgin Gülhan, Aslı Nur Özkaya Parlakay, Ceyda Tuna Kırsaçlıoğlu
BACKGROUND/AIM: Cytomegalovirus (CMV) hepatitis is generally asymptomatic or rarely can lead to severe complications in immunocompetent hosts. This study aims to evaluate CMV hepatitis in immunocompetent young children, which is discussed relatively rarely in the literature. MATERIALS AND METHODS: A retrospective review of 49 pediatric patients with CMV hepatitis from January 2005 to December 2010 was performed. RESULTS: The median age of the patients was 5...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28069750/the-neonatal-window-of-opportunity-setting-the-stage-for-life-long-host-microbial-interaction-and-immune-homeostasis
#16
REVIEW
Natalia Torow, Mathias W Hornef
The existence of a neonatal window was first highlighted by epidemiological studies that revealed the particular importance of this early time in life for the susceptibility to immune-mediated diseases in humans. Recently, the first animal studies emerged that present examples of early-life exposure-triggered persisting immune events, allowing a detailed analysis of the factors that define this particular time period. The enteric microbiota and the innate and adaptive immune system represent prime candidates that impact on the pathogenesis of immune-mediated diseases and are known to reach a lasting homeostatic equilibrium following a dynamic priming period after birth...
January 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28060871/a-neonatal-murine-model-of-mrsa-pneumonia
#17
Elizabeth A Fitzpatrick, Dahui You, Bishwas Shrestha, David Siefker, Vivek S Patel, Nikki Yadav, Sridhar Jaligama, Stephania A Cormier
Pneumonia due to methicillin-resistant Staphylococcus aureus (MRSA) is a significant cause of morbidity and mortality in infants particularly following lower respiratory tract viral infections such as Respiratory Syncytial Virus (RSV). However, the mechanisms by which co-infection of infants by MRSA and RSV cause increased lung pathology are unknown. Because the infant immune system is qualitatively and quantitatively different from adults we developed a model of infant MRSA pneumonia which will allow us to investigate the effects of RSV co-infection on disease severity...
2017: PloS One
https://www.readbyqxmd.com/read/28057934/the-driving-force-of-prophages-and-crispr-cas-system-in-the-evolution-of-cronobacter-sakazakii
#18
Haiyan Zeng, Jumei Zhang, Chensi Li, Tengfei Xie, Na Ling, Qingping Wu, Yingwang Ye
Cronobacter sakazakii is an important foodborne pathogens causing rare but life-threatening diseases in neonates and infants. CRISPR-Cas system is a new prokaryotic defense system that provides adaptive immunity against phages, latter play an vital role on the evolution and pathogenicity of host bacteria. In this study, we found that genome sizes of C. sakazakii strains had a significant positive correlation with total genome sizes of prophages. Prophages contributed to 16.57% of the genetic diversity (pan genome) of C...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28045974/neonatal-immunization-with-a-single-il-4-antigen-dose-induces-increased-antibody-responses-after-challenge-infection-with-equine-herpesvirus-type-1-ehv-1-at-weanling-age
#19
Bettina Wagner, Gillian Perkins, Susanna Babasyan, Heather Freer, Alison Keggan, Laura B Goodman, Amy Glaser, Sigurbjorg Torsteinsdóttir, Vilhjálmur Svansson, Sigríður Björnsdóttir
Neonatal foals respond poorly to conventional vaccines. These vaccines typically target T-helper (Th) cell dependent B-cell activation. However, Th2-cell immunity is impaired in foals during the first three months of life. In contrast, neonatal basophils are potent interleukin-4 (IL-4) producers. The purpose of this study was to develop a novel vaccine triggering the natural capacity of neonatal basophils to secrete IL-4 and to evaluate if vaccination resulted in B-cell activation and antibody production against EHV-1 glycoprotein C (gC)...
2017: PloS One
https://www.readbyqxmd.com/read/28044379/the-lack-of-natural-processes-of-delivery-and-neonatal-intensive-care-treatment-lead-to-impaired-cytokine-responses-later-in-life
#20
Maria-Viola Martikainen, Leea Keski-Nisula, Hermina Jakupović, Anne M Karvonen, Juha Pekkanen, Maija-Riitta Hirvonen, Marjut Roponen
PROBLEM: Birth-related factors and neonatal treatments could affect the maturation of immune system and thus have lasting effects on immune responses. We investigated the effect of obstetric factors other than being born by cesarean section on immune responses later in life. METHOD OF STUDY: Regulatory, inflammatory, TH1 and TH2 cytokines, and a chemokine were analyzed in unstimulated and Toll-like receptors (TLRs) 2-, 3-, and 4-stimulated PBMCs of teenagers born by cesarean delivery (CD; N=79)...
January 3, 2017: American Journal of Reproductive Immunology: AJRI
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