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Tumor necrosis factor and neonates

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https://www.readbyqxmd.com/read/29784900/irak-inhibitor-protects-the-intestinal-tract-of-necrotizing-enterocolitis-by-inhibiting-the-toll-like-receptor-tlr-inflammatory-signaling-pathway-in-rats
#1
Yu Hou, Xin Lu, Yueju Zhang
BACKGROUND The aim of this study was to assess the effects of interleukin-1 (IL-1) receptor associated kinase (IRAK) inhibitors on intestinal injury induced by necrotizing enterocolitis (NEC) in neonatal rats and its regulation on the intestinal Toll-like receptor (TLR) inflammatory signaling pathway. MATERIAL AND METHODS The neonatal rat models of NEC were established though hypoxia-cold stimulation. All rats were divided into 3 groups: an NEC model group (NEC group), an IRAK inhibitor group (IRAKI group), and a normal control group (NC group)...
May 22, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29772244/gender-difference-in-the-effect-of-progesterone-on-neonatal-hypoxic-ischemic-brain-injury-in-mouse
#2
Shuyu Dong, Qian Zhang, Delian Kong, Chao Zhou, Jie Zhou, Jingjing Han, Yan Zhou, Guoliang Jin, Xiaodong Hua, Jun Wang, Fang Hua
This study was to investigate the effects of progesterone (PROG) on neonatal hypoxic/ischemic (NHI) brain injury, the differences in effects between genders, and the underlying mechanisms. NHI brain injury was established in both male and female neonatal mice induced by occlusion of the left common carotid artery followed by hypoxia. The mice were treated with PROG or vehicle. Fluoro-Jade B staining (F-JB), long term behavior testing, and brain magnetic resonance image (MRI) were applied to evaluate neuronal death, neurological function, and brain damage...
May 14, 2018: Experimental Neurology
https://www.readbyqxmd.com/read/29765110/mast-cells-contribute-to-enterovirus-71-infection-induced-pulmonary-edema-in-neonatal-mice
#3
Yuefei Jin, Chao Zhang, Hui Wang, Guangyuan Zhou, Xiangpeng Wang, Rongguang Zhang, Shuaiyin Chen, Jingchao Ren, Lu Chen, Dejian Dang, Peng Zhang, Yuanlin Xi, Weidong Wu, Weiguo Zhang, Guangcai Duan
Enterovirus (EV) 71 infection has been widely acknowledged as the leading cause of severe hand, foot and mouth disease (HFMD), which may rapidly lead to fatal pulmonary edema. In this study, we established a mouse model for EV71 infection exhibiting high incidence of severe symptoms with pulmonary edema. Mast cells (MCs) accumulation, activation and allergic inflammation were found in the brains, lungs and skeletal muscle of mice after EV71 infection, especially in the lungs of mice. Levels of histamine, platelet-activating factor (PAF), interleukin (IL)-4, IL-5, IL-13, tumor necrosis factor-α (TNF-α), nitric oxide (NO), endocrine gland-derived vascular endothelial growth factor (EG-VEGF) and noradrenaline (NA) were increased in EV71-infected lungs...
May 15, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29764580/-effect-of-rhubarb-on-neonatal-rats-with-bronchopulmonary-dysplasia-induced-by-hyperoxia
#4
Ling-Ling Yin, Zhen-Zhi Ye, Li-Jun Tang, Liang Guo, Wei-Min Huang
OBJECTIVE: To study the effect of rhubarb on neonatal rats with bronchopulmonary dysplasia (BPD) induced by hyperoxia. METHODS: A total of 64 rats (postnatal day 4) were randomly divided into four groups: air control, rhubarb control, hyperoxia model, and hyperoxia+rhubarb (n=16 each). The rats in the hyperoxia model and hyperoxia+rhubarb groups were exposed to hyperoxia (60% O2) to establish a BPD model. The rats in the rhubarb control and hyperoxia+rhubarb groups were given rhubarb extract suspension (600 mg/kg) by gavage daily...
May 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29745770/alterations-of-neuroimmune-cell-density-and-pro-inflammatory-cytokines-in-response-to-thimerosal-in-prefrontal-lobe-of-male-rats
#5
Kobra Afsordeh, Yousef Sadeghi, Abdollah Amini, Zahra Namvarpour, Mohammad-Amin Abdollahifar, Hojjat-Allah Abbaszadeh, Abass Aliaghaei
Evidence suggests that the effect of heavy metals on neuroimmune cells lead to neurogenic inflammatory responses. In this study, immune cells [mast cells (MCs) and microglia] and pro-neuroinflammation cytokines (interleukin-1b and tumor necrosis factor-α) were assessed in the prefrontal lobe of rat brains exposed to thimerosal in different timeframes. A total of 108 neonatal Wistar rats were divided into three groups having three subgroups. The experimental groups received a single dose of thimerosal (300 μg/kg) postnatally at 7, 9, 11, and 15 days...
May 10, 2018: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/29742464/gastrointestinal-microbiota-and-mucosal-immune-gene-expression-in-neonatal-pigs-reared-in-a-cross-fostering-model
#6
Nidia Maradiaga, Brian Aldridge, Mohamed Zeineldin, James Lowe
Cross fostering is employed to equalize the number of piglet between litters ensuring colostrum intake for their survival and growth. However, little is known about the impact of cross fostering on the intestinal microbiota and mucosal immune gene expression of the neonatal pig. The objective of this study was to determine the influence of maternal microbial communities on the gastrointestinal (GI) microbiota and mucosal immune gene expression in young pigs reared in a cross-fostering model. Piglets were given high quality colostrum from birth dam or foster dam upon birth...
May 6, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29733904/c1qtnf1-attenuates-angiotensin-ii-induced-cardiac-hypertrophy-via-activation-of-the-ampka-pathway
#7
Leiming Wu, Lu Gao, Dianhong Zhang, Rui Yao, Zhen Huang, Binbin Du, Zheng Wang, Lili Xiao, Pengcheng Li, Yapeng Li, Cui Liang, Yanzhou Zhang
RATIONALE: Complement C1q tumor necrosis factor related proteins (C1QTNFs) have been reported to have diverse biological influence on the cardiovascular system. C1QTNF1 is a member of the CTRP superfamily. C1QTNF1 is expressed in the myocardium; however, its function in myocytes has not yet been investigated. OBJECTIVE: To systematically investigate the roles of C1QTNF1 in angiotensin II (Ang II)-induced cardiac hypertrophy. METHODS AND RESULTS: C1QTNF1 knock-out mice were used with the aim of determining the role of C1QTNF1 in cardiac hypertrophy in the adult heart...
May 4, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29729919/maternal-late-gestation-metabolic-stress-is-associated-with-changes-in-immune-and-metabolic-responses-of-dairy-calves
#8
Tahlia Ling, Marta Hernandez-Jover, Lorraine M Sordillo, Angel Abuelo
Metabolic stress in periparturient dairy cows is characterized by excessive lipid mobilization, inflammation, and oxidative stress that is associated with immune dysfunction. Thus, metabolic stress around the time calving is linked to the development of various early-lactation health disorders. Maternal status during late pregnancy can have carryover effects on several health and production variables of neonatal calves. However, the effects of metabolic stress during gestation on metabolic and immune responses of newborn calves remain unknown...
May 2, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29706927/tweak-receptor-deficiency-has-opposite-effects-on-female-and-male-mice-subjected-to-neonatal-hypoxia-ischemia
#9
Anton Kichev, Ana A Baburamani, Regina Vontell, Pierre Gressens, Linda Burkly, Claire Thornton, Henrik Hagberg
Tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK) is a multifunctional cytokine member of the TNF family. TWEAK binds to its only known receptor, Fn14, enabling it to activate downstream signaling processes in response to tissue injury. The aim of this study was to investigate the role of TWEAK signaling in neonatal hypoxia-ischemia (HI). We found that after neonatal HI, both TWEAK and Fn14 expression were increased to a greater extent in male compared with female mice. To assess the role of TWEAK signaling after HI, the size of the injury was measured in neonatal mice genetically deficient in Fn14 and compared with their wild-type and heterozygote littermates...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29692197/inflammatory-responses-are-sex-specific-in-chronic-hypoxic-ischemic-encephalopathy
#10
Abdullah Al Mamun, Haifu Yu, Sharmeen Romana, Fudong Liu
Neonatal hypoxic-ischemic encephalopathy (HIE) is increasingly recognized as a sexually dimorphic disease. Male infants are not only more vulnerable to ischemic insult; they also suffer more long-term cognitive deficits compared with females with comparable brain damage. The innate immune response plays a fundamental role in mediating acute neonatal HIE injury. However, the mechanism underlying the sex difference in chronic HIE is still elusive. The present study investigated the sex difference in HIE outcomes and inflammatory response in the chronic stage (30 days after HIE)...
January 1, 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29679702/alamandine-attenuates-sepsis-associated-cardiac-dysfunction-via-inhibiting-mapks-signaling-pathways
#11
Peng Li, Xi-Ru Chen, Fei Xu, Chi Liu, Chang Li, Hui Liu, Hui Wang, Wei Sun, Yan-Hui Sheng, Xiang-Qing Kong
Sepsis-induced myocardial dysfunction represents a major cause of death in intensive care units. Alamandine is an important biologically active peptide in the renin-angiotensin system. The present study evaluated whether alamandine improves cardiac dysfunction, inflammation, and apoptosis, and affects the signaling pathways involved in these events. Experiments were carried out in mice treated with lipopolysaccharide (LPS) or alamandine, and in neonatal rat cardiomyocytes. Alamandine increased the ejection fraction and fractional shortening, both of which were decreased upon LPS infusion in mice...
April 18, 2018: Life Sciences
https://www.readbyqxmd.com/read/29672858/neonates-colonized-with-pathogenic-bacteria-in-the-airways-have-a-low-grade-systemic-inflammation
#12
Nadia Rahman Fink, Bo Lund Chawes, Jonathan Thorsen, Jakob Stokholm, Karen Krogfelt, Susanne Schjørring, Marie Kragh, Klaus Bønnelykke, Susanne Brix, Hans Bisgaard
BACKGROUND AND OBJECTIVES: The development of childhood asthma is associated with neonatal colonization with pathogenic bacteria in hypopharynx. Furthermore, established asthma is associated with systemic low-grade inflammation. We here report on the association between neonatal colonization with pathogenic bacteria in hypopharynx and the development of systemic low-grade inflammation. METHODS: Bacterial colonization of the hypopharynx with M. catharralis, H. influenzae and/or S...
April 19, 2018: Allergy
https://www.readbyqxmd.com/read/29664552/importance-of-polymorphic-variants-of-tumour-necrosis-factor-%C3%AE-gene-in-the-etiology-of-intrauterine-growth-restriction
#13
Agnieszka Kaluba-Skotarczak, Justyna Magiełda, Anna Romała, Grażyna Kurzawińska, Magdalena Barlik, Krzysztof Drews, Marcin Ożarowski, Tomasz Łoziński, Agnieszka Seremak-Mrozikiewicz
OBJECTIVES: Intrauterine growth restriction (IUGR) is one of the main global causes of increased perinatal mortality and fetal and neonatal morbidity. It remains a key challenge for modern perinatal medicine. Negative effects of IUGR are manifested not only in the perinatal period but also at the later stages of life. Proinflammatory cytokines and their polymorphisms are hypothesized to play an important role in IUGR pathomechanisms. The aim of the study was to determine the role of selected polymorphisms (-238G >A, -308G >A and -376G >A) of tumor necrosis factor alpha (TNF-α) in the etiology of intrauterine growth restriction...
2018: Ginekologia Polska
https://www.readbyqxmd.com/read/29575648/spontaneous-development-of-intratumoral-heterogeneity-in-a-transposon-induced-mouse-model-of-glioma
#14
Keisuke Sumiyoshi, Hideto Koso, Sumiko Watanabe
Glioma is the most common form of malignant brain cancer in adults. The Sleeping Beauty (SB) transposon-based glioma mouse model allows for effective in vivo analysis of candidate genes. In this study, we developed a transposon vector that encodes the triple combination of platelet-derived growth factor subunit A (PDGFA), and shRNAs against Nf1 and Trp53 (shNf1/shp53). Initiation and progression of glioma in the brain were monitored by expression of a fluorescent protein. Transduction of the vector into neural progenitor and stem cells (NPCs) in the subventricular zone (SVZ) of the neonatal brain induced proliferation of oligodendrocyte precursor cells, and promoted formation of highly penetrant malignant gliomas within 2 to 4 months...
March 25, 2018: Cancer Science
https://www.readbyqxmd.com/read/29512749/allicin-attenuates-lipopolysaccharide%C3%A2-induced-acute-lung-injury-in-neonatal-rats-via-the-pi3k-akt-pathway
#15
Xudong Wang, Chao Zhang, Chao Chen, Yi Guo, Xiaoyan Meng, Chen Kan
Allicin is an oxygenated carotenoid derivative that exhibits strong antioxidant activity, which effectively removes reactive oxygen species from the body and has important roles in disease prevention and treatment. Therefore, the present study aimed to investigate whether allicin attenuates lipopolysaccharide (LPS)‑induced acute lung injury (ALI) in neonatal rats and the potential underlying mechanisms. An LPS‑induced ALI neonatal rat model was utilized to assess the therapeutic value and mechanisms of allicin...
May 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29480285/curcumin-attenuates-pulmonary-inflammation-in-lipopolysaccharide-induced-acute-lung-injury-in-neonatal-rat-model-by-activating-peroxisome-proliferator-activated-receptor-%C3%AE-ppar%C3%AE-pathway
#16
Keping Cheng, Aijuan Yang, Xiaohui Hu, Dongbo Zhu, Kaizhong Liu
BACKGROUND This study aimed to investigate the therapeutic effect of curcumin in lipopolysaccharide (LPS) induced neonatal acute lung injury (ALI) and the possibly associated molecular mechanisms. MATERIAL AND METHODS ALI neonatal animal model was established by using LPS. Curcumin and/or peroxisome proliferator-activated receptor γ (PPARγ) inhibitor BADGE (bisphenol A diglycidyl ether) were administrated to animals. Lung edema was evaluated by PaO2 and lung wet/dry weight ratio (W/D) measurements. EMSA was used to determine the PPARγ activity...
February 26, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29478510/plasma-biomarkers-of-brain-injury-in-neonatal-hypoxic-ischemic-encephalopathy
#17
An N Massaro, Yvonne W Wu, Theo K Bammler, Bryan Comstock, Amit Mathur, Robert C McKinstry, Taeun Chang, Dennis E Mayock, Sarah B Mulkey, Krisa Van Meurs, Sandra Juul
OBJECTIVES: To evaluate plasma brain specific proteins and cytokines as biomarkers of brain injury in newborns with hypoxic-ischemic encephalopathy (HIE) and, secondarily, to assess the effect of erythropoietin (Epo) treatment on the relationship between biomarkers and outcomes. STUDY DESIGN: A study of candidate brain injury biomarkers was conducted in the context of a phase II multicenter randomized trial evaluating Epo for neuroprotection in HIE. Plasma was collected at baseline (<24 hours) and on day 5...
March 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29402203/human-umbilical-cord-perivascular-cells-and-human-bone-marrow-mesenchymal-stromal-cells-transplanted-intramuscularly-respond-to-a-distant-source-of-inflammation
#18
Shiva Hamidian Jahromi, Catalina Estrada, Yunqing Li, Elaine Cheng, John E Davies
Intravenously administered mesenchymal stromal cells (MSCs) are rapidly entrapped in the lungs, where they display an anti-inflammatory phenotype. Intramuscular (IM) delivery provides an increased MSC dwell-time, which could result in a sustained modulation of an inflammatory milieu. We studied the therapeutic effects of IM delivered MSCs to treat a distant (contralateral) inflammation, and compared the efficacy of neonatal (umbilical cord) and adult bone marrow MSCs (BMMSCs). Inflammation decreased over 48 h, but neonatal cells showed an earlier response than BMMSCs...
March 15, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29399120/significance-of-dynamic-evolution-of-tnf-%C3%AE-il-6-and-intestinal-fatty-acid-binding-protein-levels-in-neonatal-necrotizing-enterocolitis
#19
Zhaohui Li, Lei Sheng
To study the significance of dynamic evolution of serum tumor necrosis factor-α (TNF-α), interleukin 6 (IL-6) and intestinal fatty acid-binding protein (I-FABP) levels in neonatal necrotizing enterocolitis (NEC). A total of 45 NEC child patients, 45 non-NEC child patients and 45 healthy newborns were enrolled. After the day age, weight, gestational week and delivery mode were matched, the serum TNF-α, IL-6 and I-FABP levels at 6, 24 and 72 h after admission were measured via ELISA method, and their correlations with prognosis were analyzed...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29393452/effect-of-t-helper-cell-1-t-helper-cell-2-balance-and-nuclear-factor-%C3%AE%C2%BAb-on-white-matter-injury-in-premature-neonates
#20
Xuewen Su, Haifeng Yuan, Hongwei Cui, Hua Zhu, Xia Yun, Wenyan Tang, Junlong Chen, Zu Luan
Incidence of white matter injury (WMI), which is featured as softening of white matter tissues, has recently increased. Previous studies have demonstrated a close correlation between T helper cell 1 and T helper cell 2 (Th1/Th2) imbalance and nuclear factor‑κB (NF‑κB) with brain disease. Their role in premature WMI, however, remains to be illustrated. Serum samples were collected from 60 premature WMI neonates, plus another control group of 60 premature babies without WMI. Patients were further divided into mild, moderate and severe WMI groups...
April 2018: Molecular Medicine Reports
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