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https://www.readbyqxmd.com/read/29432891/estimation-of-achievable-oxygen-consumption-following-transfusion-with-rejuvenated-red-blood-cells
#1
Amudan J Srinivasan, Kyle Kausch, Collin Inglut, Alan Gray, Matthew Landrigan, Jessica L Poisson, Jacob N Schroder, Ian J Welsby
OBJECTIVE: Erythrocyte storage induces a non-physiological increase in hemoglobin-oxygen affinity (quantified by low p50, the oxygen tension at 50% hemoglobin saturation), which can be restored through biochemical rejuvenation. The objective was to mathematically model the impact of transfusing up to three standard allogeneic units or rejuvenated units on oxygen delivery (DO 2 ) and oxygen consumption (VO 2 ). METHODS: Oxygen dissociation curves were generated from AS-1 RBC leukoreduced units (n = 7) before and after rejuvenation following manufacturer's instructions...
February 9, 2018: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29426128/intake-estimates-of-dioxins-and-dioxin-like-polychlorobiphenyls-in-the-italian-general-population-from-the-2013-2016-results-of-official-monitoring-plans-in-food
#2
Gianfranco Diletti, Giampiero Scortichini, Maria Cesarina Abete, Giovanni Binato, Luca Candeloro, Roberta Ceci, Giannina Chessa, Annamaria Conte, Alessandra Di Sandro, Mauro Esposito, Giorgio Fedrizzi, Vincenzo Ferrantelli, Enrica Ferretti, Simonetta Menotta, Valeria Nardelli, Bruno Neri, Arianna Piersanti, Francesca Roberti, Alessandro Ubaldi, Gianfranco Brambilla
The implementation of the European Union strategy for polychlorodibenzo-dioxins and -furans (PCDD/Fs), and dioxin-like polychlorobiphenyls (DL-PCBs) is determining a general reduction of their presence in the environment and in the food chain. The most important route for human exposure to these substances is food consumption and, as a consequence, a progressive decrease of their dietary intake has been observed in the last decades. In this context, it seemed worth updating the PCDD/F and DL-PCB intake estimation for the Italian population...
January 27, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29424925/new-possible-mechanisms-of-embolism-formation-when-measuring-vulnerability-curves-by-air-injection-in-a-pressure-sleeve
#3
Pengxian Yin, Jing Cai
Since 1988, researchers have exposed stems to positive pressures to displace water in vessels and measure the impact of applied pressure on hydraulic conductivity. The pressure-sleeve technique has been used in more than 60 publications to measure vulnerability curves (VCs), which are a measure of how water stress impacts the ability of plants to transport water because water stress induces embolism in vessels which blocks water flow. It is thought that the positive pressure in a sleeve required to induce 50% loss of conductivity (PLC), P50 , is the same magnitude as the tension that causes 50% PLC, T50 , where the tension can be induced by either bench-top dehydration or by a centrifuge technique...
February 9, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29423058/muc1-induces-m2-type-macrophage-influx-during-postpartum-mammary-gland-involution-and-triggers-breast-cancer
#4
Yuan Li, Zhi Pang, Xinran Dong, Xiaodong Liao, Huayun Deng, Chunhua Liao, Yahui Liao, Guoqiang Chen, Lei Huang
The microenvironment of postpartum mammary gland involution (PMI) has been linked to the increased risk of breast cancer and poor outcome of patients. Nevertheless the mechanism underlying regulates the microenvironment remains largely unknown. MUC1, which is abnormally overexpressed in most breast cancer, is physiologically expressed in PMI. Using MUC1 cytoplasm domain (MUC1-CD) transgenic mice, we reveal that the overexpression of MUC1-CD in mammary epithelial cells increases M2 type macrophage infiltration in PMI...
January 9, 2018: Oncotarget
https://www.readbyqxmd.com/read/29415884/tnf-receptor-activated-factor-2-mediates-cardiac-protection-through-noncanonical-nf-%C3%AE%C2%BAb-signaling
#5
Sarah Evans, Huei-Ping Tzeng, Deborah J Veis, Scot Matkovich, Carla Weinheimer, Attila Kovacs, Philip M Barger, Douglas L Mann
To elucidate the mechanisms responsible for cytoprotective effects of TNF receptor-activated factor 2 (TRAF2) in the heart, we employed genetic gain- and loss-of-function studies ex vivo and in vivo in mice with cardiac-restricted overexpression of TRAF2 (Myh6-TRAF2LC). Crossing Myh6-TRAF2LC mice with mice lacking canonical signaling (Myh6-TRAF2LC/Myh6-IκBαΔN) abrogated the cytoprotective effects of TRAF2 ex vivo. In contrast, inhibiting the JAK/STAT pathway did not abrogate the cytoprotective effects of TRAF2...
February 8, 2018: JCI Insight
https://www.readbyqxmd.com/read/29412239/association-of-multiple-genetic-variants-with-the-extension-and-severity-of-coronary-artery-disease
#6
Simone Cristina Pinto Matheus Fischer, Simone Pires Pinto, Lívia Campos do Amaral Silva Lins, Henrique Tria Bianco, Carlos Manoel de Castro Monteiro, Luiz Fernando Muniz Pinheiro, Francisco Antonio Helfenstein Fonseca, Maria Cristina de Oliveira Izar
BACKGROUND: Metabolic syndrome (MS) is a condition that, when associated with ischemic heart disease and cardiovascular events, can be influenced by genetic variants and determine more severe coronary atherosclerosis. OBJECTIVES: To examine the contribution of genetic polymorphisms to the extension and severity of coronary disease in subjects with MS and recent acute coronary syndrome (ACS). METHODS: Patients (n = 116, 68% males) aged 56 (9) years, with criteria for MS, were prospectively enrolled to the study during the hospitalization period after an ACS...
February 1, 2018: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/29403301/early-exposure-to-distinct-sources-of-lipids-affects-differently-the-development-and-hepatic-inflammatory-profiles-of-21-day-old-rat-offspring
#7
Laís Vales Mennitti, Lila Missae Oyama, Aline Boveto Santamarina, Claudia Maria da Penha Oller do Nascimento, Luciana Pellegrini Pisani
Introduction: Maternal diet composition of fatty acids during pregnancy and lactation seems to modify the fetal programming, epigenetic pattern and offspring phenotype. Aim: Herein, we investigated the effects of maternal consumption of normal-fat diets with distinct lipid sources during pregnancy and lactation on the somatic development and proinflammatory status of 21-day-old rat offspring. Materials and Methods: On the first day of pregnancy, female Wistar rats were divided into four groups as follows: soybean oil (M-SO), lard (M-L), hydrogenated vegetable fat (M-HVF) and fish oil (M-FO)...
2018: Journal of Inflammation Research
https://www.readbyqxmd.com/read/29400004/trends-in-obesity-overweight-and-thinness-in-children-in-the-seychelles-between-1998-and-2016
#8
Rim Aly, Bharathi Viswanathan, Gaynor Mangroo, Jude Gedeon, Pascal Bovet
OBJECTIVE: This study assessed trends in the prevalence of children and adolescents with obesity, overweight, and thinness in the Seychelles, a rapidly developing nation in the Indian Ocean, and changes in the distribution of BMI over time. METHODS: Between 1998 and 2016, examination surveys were conducted every year in all students of four selected school grades (kindergarten, primary 4, secondary 1, and secondary 4) in all schools. We categorized BMI by using the International Obesity Task Force criteria...
February 5, 2018: Obesity
https://www.readbyqxmd.com/read/29399096/the-effect-of-focal-cerebral-ischemia-reperfusion-injury-on-tlr4-and-nf-%C3%AE%C2%BAb-signaling-pathway
#9
Jing Chen, Chenli Yang, Xiang Xu, Yonglin Yang, Bo Xu
The present study analyzed the change of Toll-like receptor 4 (TLR4) and nuclear factor-κB (NF-κB) expression in focal cerebral ischemia-reperfusion injury model. A sample of 36 Sprague-Dawley rats were randomly selected and divided into sham operation group (group S), control group (group C) and Chrysanthemum ester group (NF-κB inhibitor, group CE), each group consisted of 12 rats. The rat model of focal cerebral ischemia-reperfusion was established. The physiological indexes and neurological severity score of rats was recorded by a double-blind method...
January 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29396215/validation-of-equations-and-proposed-reference-values-to-estimate-fat-mass-in-chilean-university-students
#10
Rossana Gómez Campos, Jaime Pacheco Carrillo, Alejandro Almonacid Fierro, Camilo Urra Albornoz, Marco Cossío-Bolaños
OBJECTIVES: (i) To propose regression equations based on anthropometric measures to estimate fat mass (FM) using dual energy X-ray absorptiometry (DXA) as reference method, and (ii)to establish population reference standards for equation-derived FM. MATERIAL AND METHODS: A cross-sectional study on 6,713 university students (3,354 males and 3,359 females) from Chile aged 17.0 to 27.0years. Anthropometric measures (weight, height, waist circumference) were taken in all participants...
January 23, 2018: Endocrinología, Diabetes y Nutrición
https://www.readbyqxmd.com/read/29384062/melatonin-differentially-modulates-nf-%C3%B0-b-expression-in-breast-and-liver-cancer-cells
#11
Jucimara F Colombo, Bruna Victorasso Jardim-Perasssi, Joao Paulo Senna Ferreira, Cristine Zampieri Braga, Nathalia Martins Sonehara, Rubens de Paula Júnior, Marina Gobbe Moschetta, Ana Paula Girol, Debora Aparecida Pires De Campos Zuccari
Background NF-kB (nuclear factor kappa B) is a transcription factor composed of two subunits, p50 and p65, which plays a key role in the inflammatory process. Melatonin has oncostatic, antiangiogenic and antimetastatic properties, and some recent studies have indicated an inhibitory effect of melatonin on NF-kB in some types of cancer. This work aims to investigate the effects of melatonin treatment on the expression of NF-kB in breast and liver cancer models. Methods The breast cancer xenographic model was performed using female Balb/c nude athymic mice injected with MDA-MB-231 cells...
January 30, 2018: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29378560/sheng-ji-hua-yu-formula-promotes%C3%A2-diabetic-wound-healing-of-re-epithelization-via-activin-follistatin-regulation
#12
Le Kuai, Jing-Ting Zhang, Yu Deng, Shun Xu, Xun-Zhe Xu, Min-Feng Wu, Dong-Jie Guo, Yu Chen, Ren-Jie Wu, Xing-Qiang Zhao, Hua Nian, Bin Li, Fu-Lun Li
BACKGROUND: Sheng-ji Hua-yu(SJHY) formula is one of the most useful Traditional Chinese medicine (TCM) in the treatment of the delayed diabetic wound. However, elucidating the related molecular biological mechanism of how the SJHY Formula affects excessive inflammation in the process of re-epithelialization of diabetic wound healing is a task urgently needed to be fulfilled. The objectives of this study is to evaluate the effect of antagonisic expression of pro-/anti-inflammatory factors on transforming growth factor-β(TGF-β) superfamily (activin and follistatin) in the process of re-epithelialization of diabetic wound healing in vivo, and to characterize the involvement of the activin/follistatin protein expression regulation, phospho-Smad (pSmad2), and Nuclear factor kappa B p50 (NF-kB) p50 in the diabetic wound healing effects of SJHY formula...
January 29, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29378459/auditory-brainstem-middle-and-late-latency-responses-to-short-gaps-in-noise-at-different-presentation-rates
#13
Khalid Alhussaini, Jorge Bohorquez, Rafael E Delgado, Ozcan Ozdamar
OBJECTIVE: The effects of rate on auditory-evoked potentials (AEP) to short noise gaps (12 ms) recorded at high sampling rates using wide-band filters were investigated. DESIGN: Auditory brainstem (ABR), middle latency (MLR), late latency (LLR) and steady-state (ASSR) responses were simultaneously recorded in adult subjects at four gap rates (0.5, 1, 5 and 40 Hz). Major components (V, Na, Pa, Nb, Pb, N1 and P2) were identified at each rate and analysed for latency/amplitude characteristics...
January 29, 2018: International Journal of Audiology
https://www.readbyqxmd.com/read/29377600/activation-of-tnf-%C3%AE-nf-%C3%AE%C2%BAb-axis-enhances-crl4bdcaf11-e3-ligase-activity-and-regulates-cell-cycle-progression-in-human-osteosarcoma-cells
#14
Caiguo Zhang, Bin Chen, Kaibiao Jiang, Lifeng Lao, Hongxing Shen, Zhi Chen
Cullin 4B, a member of the Cullins, which serve as scaffolds to facilitate the assembly of E3 ligase complexes, is aberrantly expressed in many cancers, including osteosarcoma. Recently, we observed that CUL4B forms the CRL4BDCAF11 E3 ligase, which specifically ubiquitinates and degrades the cyclin-dependent kinase (CDK) inhibitor p21Cip1 in human osteosarcoma cells. However, the underlying mechanisms regarding the aberrant expression of CUL4B and the upstream members of this signaling pathway are mostly unknown...
January 27, 2018: Molecular Oncology
https://www.readbyqxmd.com/read/29374662/evaluating-sickness-absence-duration-by-musculoskeletal-and-mental-health-issues-a-retrospective-cohort-study-of-scottish-healthcare-workers
#15
Evangelia Demou, Shanley Smith, Abita Bhaskar, Daniel F Mackay, Judith Brown, Kate Hunt, Sergio Vargas-Prada, Ewan B Macdonald
OBJECTIVES: Sickness absence (SA) among healthcare workers is associated with occupational and non-occupational risk factors and impacts employee health, healthcare delivery and patient health. At the same time, healthcare is one of the employment sectors with the highest rates of work-related ill health in the UK. Musculoskeletal (MSK) and mental health (MH) issues are leading causes of SA, but there is a lack of research on how certain MSK/MH conditions impact on SA duration. The study aim is to determine differences in SA duration by MH and MSK disorders in healthcare employees...
January 26, 2018: BMJ Open
https://www.readbyqxmd.com/read/29374551/retinal-conduction-speed-analysis-reveals-different-origins-of-the-p50-and-n95-components-of-the-multifocal-pattern-electroretinogram
#16
M Bach, A K Cuno, M B Hoffmann
The pattern electroretinogram (PERG), an indicator of retinal ganglion cell (RGC) function, comprises a P50 and an N95 component. We addressed the question of whether the N95 originates, like the P50, from the RGC bodies or from the change of axon orientation at the optic nerve head (ONH). Thus, we recorded multifocal PERGs for 36 retinal locations in 21 participants. Second-order kernel responses were analyzed for the dependence of peak time topography on retinal fiber lengths to the ONH separately for the positive and negative excursions...
January 25, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29371965/a-link-between-relb-expression-and-tumor-progression-in-laryngeal-cancer
#17
Ioanna Giopanou, Ioannis Lilis, Helen Papadaki, Theodoros Papadas, Georgios T Stathopoulos
Laryngeal cancer is a frequent malignancy originating from the squamous vocal epithelium in a multi-stage fashion in response to environmental carcinogens. Although most cases can be cured by surgery and/or radiotherapy, advanced and relapsing disease is common, and biomarkers of such dismal cases are urgently needed. The cancer genome of laryngeal cancers was recently shown to feature a signature of aberrant nuclear factor (NF)-κB activation, but this finding has not been clinically exploited. We analyzed primary tumor samples of 96 well-documented and longitudinally followed patients covering the whole spectrum of laryngeal neoplasia, including 21 patients with benign laryngeal diseases, 15 patients with dysplasia, 43 patients with early-stage carcinoma, and 17 patients with locally advanced carcinoma, for immunoreactivity of RelA, RelB, P50, and P52/P100, the main NF-κB subunits that activate transcription...
December 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/29355562/cilostazol-attenuates-indices-of-liver-damage-induced-by-thioacetamide-in-albino-rats-through-regulating-inflammatory-cytokines-and-apoptotic-biomarkers
#18
Sally A El Awdan, Mohamed M Amin, Azza Hassan
Even though cilostazol was assessed before in several models of atherosclerosis, so far its full systematic effect as a natural anti-inflammatory and anti-apoptotic mediator in the protection of liver damage and complication has not been fully clarified, which is the target of this study. For that purpose, we examined the protective effect of cilostazol (10 and 5mg/kg, p.o. b.wt.) in an acute hepatic injury model by orally injecting it for 3 weeks prior to a single dose of TAA (300mg/kg, i.p) injection. Ursodeoxycholic acid was used as a standard drug (50mg/kg, p...
January 17, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29344161/uvb-radiation-represses-cyld-expression-in-melanocytes
#19
Silke Kuphal, Nadja Schneider, Ramin Massoumi, Claus Hellerbrand, Anja Katrin Bosserhoff
CYLD lysine 63 deubiquitinase (CYLD) was originally identified as a tumor suppressor that is mutated in familial cylindromatosis. Unlike in cylindromatosis, downregulation of the deubiquitinase CYLD in melanoma, a highly aggressive tumor, is not caused by mutations in the CYLD gene, but rather by a constitutive and high expression of the snail family transcriptional repressor 1 (SNAIL1). A reduced CYLD level leads to B-cell lymphoma-3/p50/p52-dependent nuclear factor-κB activation, which in turn triggers the expression of genes such as cyclin D1 and N-cadherin...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29339659/fc%C3%AE-r-ros-ck2%C3%AE-is-the-key-inducer-of-nf-%C3%AE%C2%BAb-activation-in-a-murine-model-of-asthma
#20
June-Mo Kim, Hae-Kyoung Kim, Yoo-Na Im, Yun-Soo Bae, Suhn-Young Im, Hern-Ku Lee
BACKGROUND: The transcription factor nuclear factor (NF)-κB plays a pivotal role in the development of allergic airway inflammation. However, the mechanism of NF-κB activation in asthma remains to be elucidated. METHODS: CK2α activation was assessed by CK2α phosphorylation and protein expression. Airway levels of histamine and cytokines were determined by ELISA. We used 2 (active and passive) forms of allergic pulmonary inflammation models. In the active form, the animals were immunized with ovalbumin (OVA) intraperitoneally, followed by an airway challenge with OVA...
January 17, 2018: International Archives of Allergy and Immunology
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