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https://www.readbyqxmd.com/read/28098926/relevance-of-osteoclast-specific-enzyme-activities-in-cell-based-in-vitro-resorption-assays
#1
A Bernhardt, K Koperski, M Schumacher, M Gelinsky
Cell-based in vitro resorption assays are an important tool to simulate the in vivo biodegradation of resorbable bone graft materials and to predict their clinical performance. The present study analyses the activity of osteoclast-specific enzymes as potential surrogate measures for classical pit assay, which is not applicable on irregular structured materials. Osteoclasts derived from human peripheral blood mononuclear cells were cultivated on different surfaces: calcium phosphate bone cements (CPC), dentin discs, osteoblast-derived extracellular matrix (ECM) and tissue culture polystyrene as control...
January 18, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28098504/effects-of-culturally-adaptive-walking-intervention-on-cardiovascular-disease-risks-for-middle-aged-korean-chinese-female-migrant-workers
#2
Hyeonkyeong Lee, Sunghye Cho, JoEllen Wilbur, Jung Hee Kim, Chang-Gi Park, Young-Me Lee, Haryong Lee
The purpose was to examine the effects of a standard treatment (ST) walking program compared to a ST walking program enhanced (Enhanced Treatment, ET) on cardiovascular health outcomes among Korean-Chinese female migrant workers in Korea. A quasi-experimental sequential design was used. A total of 132 Korean-Chinese women without contraindications to physical activity participated in the study. Both ST and ET groups had monthly goal settings and the ET group received text messages to encourage walking adherence and acculturation...
January 18, 2017: Archives of Environmental & Occupational Health
https://www.readbyqxmd.com/read/28098158/pericytes-from-mesenchymal-stem-cells-as-a-model-for-the-blood-brain-barrier
#3
Xiaohe Tian, Oliver Brookes, Giuseppe Battaglia
Blood brain-barrier (BBB) in vitro models have been widely reported in studies of the BBB phenotype. However, established co-culture systems involve brain endothelial cells, astrocytes, neurons and pericytes, and therefore are often consuming and technically challenging. Here we use mesenchymal system cells (MSC) as a potential substitute for pericytes in a BBB model. Both MSC and pericyte markers in 2D culture environment were evaluated on different extracellular matrix compositions. Further experiments indicated that MSC contributed in a similar manner to pericytes in a co-cultured 3D model on increasing trans-endothelial electric resistance (TEER) and decreasing permeability against macromolecules...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097814/detection-and-molecular-characterization-of-foot-and-mouth-disease-viruses-from-outbreaks-in-some-states-of-northern-nigeria-2013-2015
#4
D O Ehizibolo, A Haegeman, A R De Vleeschauwer, J U Umoh, H M Kazeem, E C Okolocha, K De Clercq, S Van Borm
Control measures for foot and mouth disease (FMD) in Nigeria have not been implemented due to the absence of locally produced vaccines and risk-based analysis resulting from insufficient data on the circulating FMD virus (FMDV) serotypes/strains. In 2013-2015, blood and epithelial samples were collected from reported FMD outbreaks in four states (Kaduna, Kwara, Plateau and Bauchi) in northern Nigeria. FMDV non-structural protein (NSP) seroprevalence for the outbreaks was estimated at 80% (72 of 90) and 70% (131 of 188) post-outbreak...
January 17, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28097454/in-vitro-cytogenetic-toxicity-of-bezafibrate-in-human-peripheral-blood-lymphocytes
#5
M Topaktas, N E Kafkas, S Sadighazadi, E S Istifli
Bezafibrate (BF) is a peroxisome proliferator-activated receptor (PPAR) agonist used as a lipid-lowering agent to treat both the familial or acquired combined forms of hyperlipidemia. BF is the only available fibrate drug that acts on all PPAR subtypes of α, β, and δ. Although there are studies that indicate a genotoxic potential associated with the use of fibrates, to our knowledge, the genotoxicity of BF in human peripheral blood lymphocytes has not been studied. In the present study, the genotoxic potential of BF was evaluated using chromosome aberration (CA) and micronucleus (MN) assays in peripheral blood lymphocytes of healthy human subjects...
January 17, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28097198/intimal-sarcoma-of-the-descending-aorta-mimicking-aortitis
#6
Angela Pucci, Andrea De Martino, Maurizio Levantino, Raffaella Berchiolli, Fulvio Basolo, Uberto Bortolotti
We describe a 74-year-old male patient with an intimal sarcoma of the descending aorta mimicking aortitis. The patient presented with lower back pain, fever, and increased C-reactive protein, erythrocyte sedimentation rate, and immunoglobulin G4 (IgG4) serum levels, together with Staphylococcus epidermidis-positive blood cultures. These findings, together with evidence of a 49-mm pseudoaneurysm of the descending thoracic aorta, caused us to suspect aortitis. However, postoperative histology and immunohistochemistry demonstrated the presence of an intimal aortic sarcoma...
August 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28096474/junb-regulates-angiogenesis-and-neurovascular-parallel-alignment-in-mouse-embryonic-skin
#7
Yasuo Yoshitomi, Takayuki Ikeda, Hidehito Saito, Yoshino Yoshitake, Yasuhito Ishigaki, Toshihisa Hatta, Nobuo Kato, Hideto Yonekura
Blood vessels and nerve fibers are often closely arranged in parallel throughout the body. Therefore, neurovascular interactions have been suggested to be important for the development of vascular networks. However, the molecular mechanisms and genes regulating this process remain unclear. In the present study, we investigated the genes that are activated in endothelial cells (ECs) following interactions with neurons during vascular development. Microarray analyses of human primary microvascular ECs co-cultured with mouse primary dorsal root ganglion cells showed that JunB is strongly upregulated in ECs by neurovascular interactions...
January 17, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28096417/phosphorylation-by-pkc-and-pka-regulate-the-kinase-activity-and-downstream-signaling-of-wnk4
#8
Maria Castañeda-Bueno, Juan Pablo Arroyo, Junhui Zhang, Jeremy Puthumana, Orlando Yarborough, Shigeru Shibata, Lorena Rojas-Vega, Gerardo Gamba, Jesse Rinehart, Richard P Lifton
With-no-lysine kinase 4 (WNK4) regulates electrolyte homeostasis and blood pressure. WNK4 phosphorylates the kinases SPAK (Ste20-related proline alanine-rich kinase) and OSR1 (oxidative stress responsive kinase), which then phosphorylate and activate the renal Na-Cl cotransporter (NCC). WNK4 levels are regulated by binding to Kelch-like 3, targeting WNK4 for ubiquitylation and degradation. Phosphorylation of Kelch-like 3 by PKC or PKA downstream of AngII or vasopressin signaling, respectively, abrogates binding...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096331/one-step-design-of-a-stable-variant-of-the-malaria-invasion-protein-rh5-for-use-as-a-vaccine-immunogen
#9
Ivan Campeotto, Adi Goldenzweig, Jack Davey, Lea Barfod, Jennifer M Marshall, Sarah E Silk, Katherine E Wright, Simon J Draper, Matthew K Higgins, Sarel J Fleishman
Many promising vaccine candidates from pathogenic viruses, bacteria, and parasites are unstable and cannot be produced cheaply for clinical use. For instance, Plasmodium falciparum reticulocyte-binding protein homolog 5 (PfRH5) is essential for erythrocyte invasion, is highly conserved among field isolates, and elicits antibodies that neutralize in vitro and protect in an animal model, making it a leading malaria vaccine candidate. However, functional RH5 is only expressible in eukaryotic systems and exhibits moderate temperature tolerance, limiting its usefulness in hot and low-income countries where malaria prevails...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096229/disseminated-melioidosis-in-the-head-and-neck
#10
Tze Ling Loh, Sergios Latis, Graeme Crossland, Hemi Patel
A 35-year-old man was admitted to an intensive care unit with unilateral facial swelling and septic shock after multiple presentations to the emergency department with non-specific unilateral pain over the parotid area. A CT scan of his neck showed diffuse right-sided facial soft tissue infection, mastoid effusion and temporal lobe cerebritis. The upper lobes of his lungs had cannonball lesions that were suggestive of septic lung metastases. Blood cultures and ear canal swabs were positive for Burkholderia pseudomallei The temporal lobe cerebritis eventually developed into an abscess, necessitating a cortical mastoidectomy, craniectomy and temporal lobectomy...
January 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28094033/vancomycin-added-to-the-wash-solution-of-the-cell-saver-effect-on-bacterial-contamination
#11
A Perez-Ferrer, E Gredilla-Díaz, J de Vicente-Sánchez, R Navarro-Suay, F Gilsanz-Rodríguez
OBJECTIVES: The aim of this study is to test whether the addition of a low-dose of antibiotic (vancomycin) to the wash solution (saline) of the cell-saver reduces the incidence of bacterial contamination of the autologous red blood cell (RBCs) concentrate recovered. MATERIAL AND METHOD: Experimental, randomized, double-blind, parallel group study performed on 20 consecutive patients scheduled for posterior spinal fusion surgery. Intraoperative bleeding was processed through a cell-saver: HaemoLite(®) 2+, in which the RBCs were washed according to randomization group, with saline (control group) or saline+10μg/ml(-1) vancomycin (vanco group)...
January 13, 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28094030/glucocorticoid-induced-leucine-zipper-protein-regulates-sodium-and-potassium-balance-in-the-distal-nephron
#12
Priyanka Rashmi, GianLuca Colussi, Michael Ng, Xinhao Wu, Atif Kidwai, David Pearce
Glucocorticoid induced leucine zipper protein (GILZ) is an aldosterone-regulated protein that controls sodium transport in cultured kidney epithelial cells. Mice lacking GILZ have been reported previously to have electrolyte abnormalities. However, the mechanistic basis has not been explored. Here we provide evidence supporting a role for GILZ in modulating the balance of renal sodium and potassium excretion by regulating the sodium-chloride cotransporter (NCC) activity in the distal nephron. Gilz(-/-) mice have a higher plasma potassium concentration and lower fractional excretion of potassium than wild type mice...
January 13, 2017: Kidney International
https://www.readbyqxmd.com/read/28093269/invasive-disease-versus-urinary-antigen-confirmed-pneumococcal-community-acquired-pneumonia
#13
Adrian Ceccato, Antoni Torres, Catia Cilloniz, Rosanel Amaro, Albert Gabarrus, Eva Polverino, Elena Prina, Carolina Garcia-Vidal, Eva Muñoz-Conejero, Cristina Mendez, Isabel Cifuentes, Jorge Puig de la Bella Casa, Rosario Menendez, Michael S Niederman
OBJECTIVES: The burden of pneumococcal disease is measured only through patients with invasive pneumococcal disease. The urinary antigen test (UAT) for pneumococcus has exhibited a high sensitivity and specificity. We aimed to compare the pneumococcal pneumonias diagnosed as invasive disease with pneumococcal pneumonias defined by UAT. METHODS: Prospective observational study on consecutive non-immunosuppressed patients with community-acquired pneumonia from January 2000 to December 2014...
January 13, 2017: Chest
https://www.readbyqxmd.com/read/28091904/effects-of-release-active-antibodies-to-cd4-receptor-on-the-level-of-lck-kinase-in-cultured-mononuclear-cells-from-human-peripheral-blood
#14
A G Emel'yanova, V V Grechenko, N V Petrova, I P Shilovskii, E A Gorbunov, S A Tarasov, M R Khaitov, S G Morozov, O I Epshtein
For evaluation of effects of release-active antibodies to CD4 on cultured lymphocytes from human peripheral blood, we measured intracellular content of lck-kinase cell-based ELISA. In cells treated with release-active antibodies to CD4, the content of intracellular lck-kinase significantly (p<0.01) decreased in comparison with the control (purified water processed in a similar way). Phytohemagglutinin had no effect on the concentration of lck-kinase in cells. The decrease in the content of CD4-associated lck protein suggests that the preparation enhanced intracellular coupling of lck-kinase with T-cell receptor and potentiated T-cell immune response...
January 14, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28090796/impact-of-c-rel-inhibition-of-cord-blood-derived-b-t-and-nk-cells
#15
Shirin Fallahi, Seyede Momeneh Mohammadi, Hamid Tayefi Nasrabadi, Alireza Alihemmati, Naser Samadi, Sanaz Gholami, Dariush Shanehbandi, Hojjatollah Nozad Charoudeh
The c-Rel transcription factor is a unique member of the nuclear factor (NF)-κB family that has a role in curtailing the proliferation, differentiation, cytokine production, and overall activity of B- and T-cells. In addition, c-Rel is a key regulator of apoptosis in that it influences the expression of anti-apoptotic genes such as Bcl-2 and Bcl-xL; conversely, inhibition of c-Rel increases cell apoptosis. To better understand the relationship between c-Rel expression and effects on B- and T-cell expansion, the current study evaluated c-Rel expression in cord blood mononuclear cells...
January 16, 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28090057/the-first-case-report-of-acute-cholangitis-and-bacteremia-due-to-neisseria-subflava
#16
Yoshifumi Uwamino, Kayoko Sugita, Eisuke Iwasaki, Hiroshi Fujiwara, Tomoyasu Nishimura, Naoki Hasegawa, Satoshi Iwata
We herein report a case of acute cholangitis and bacteremia caused by a commensal Neisseria species, Neisseria subflava, in an 82-year-old man with cholangiocarcinoma. Emergency endoscopic nasobiliary drainage and cefoperazone/sulbactam therapy were effective. Gram negative coccobacilli were isolated from both blood and bile cultures on 5% sheep blood agar. The isolate was identified as N.subflava biovar perflava by mass spectrometry, a sequence analysis of the 16S rRNA, and biochemical testing. Although biliary infections due to commensal Neisseria are extremely rare, this case demonstrates the possibility of its occurrence in patients undergoing bile duct treatment...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28089725/high-concentration-of-branched-chain-amino-acids-promotes-oxidative-stress-inflammation-and-migration-of-human-peripheral-blood-mononuclear-cells-via-mtorc1-activation
#17
Olha Zhenyukh, Esther Civantos, Marta Ruiz-Ortega, María Soledad Sánchez, Clotilde Vázquez, Concepción Peiró, Jesús Egido, Sebastián Mas
Leucine, isoleucine and valine are essential aminoacids termed branched-chain amino acids (BCAA) due to its aliphatic side-chain. In several pathological and physiological conditions increased BCAA plasma concentrations have been described. Elevated BCAA levels predict insulin resistance development. Moreover, BCAA levels higher than 2mmol/L are neurotoxic by inducing microglial activation in maple syrup urine disease. However, there are no studies about the direct effects of BCAA in circulating cells. We have explored whether BCAA could promote oxidative stress and pro-inflammatory status in peripheral blood mononuclear cells (PBMCs) obtained from healthy donors...
January 12, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28089672/isopropyl-alcohol-is-as-efficient-as-chlorhexidine-to-prevent-contamination-of-blood-cultures
#18
Jovanna Martínez, Juan H Macías, Virginia Arreguín, Jose A Álvarez, Alejandro E Macías, Juan L Mosqueda-Gómez
BACKGROUND: False-positive blood cultures can lead to unnecessary risks and misuse of antibiotics; to reduce rates of false-positives, it would be useful to determine whether use of an antiseptic with a prolonged effect is required. METHODS: Clinical study of efficacy (blinded and randomized) to compare the rate of blood culture contamination when skin antisepsis was performed with 70% isopropyl alcohol or 2% chlorhexidine gluconate in 70% isopropyl alcohol in 2 hospitals...
January 12, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28089405/use-of-essential-oils-following-traumatic-burn-injury-a-case-study
#19
Kathleen Jopke, Heather Sanders, Rosemary White-Traut
Hospital admissions related to burn injury reach 40,000 annually. Patients who experience extensive burns require longer hospital stays and are at increased risk for infection and hospital acquired conditions. This comparative case study is a two patient matched case control design that follows the hospital course of two children who experienced burn injuries. For one of these patients, with the consent of the child's parents, the grandmother treated her granddaughter with essential oils. Essential oils have the potential to inhibit microbial growth, support treatment of wounds, and facilitate healing...
January 13, 2017: Journal of Pediatric Nursing
https://www.readbyqxmd.com/read/28089289/evaluation-of-five-serologic-assays-for-bovine-tuberculosis-surveillance-in-domestic-free-range-pigs-from-southern-spain
#20
Fernando Cardoso-Toset, Inmaculada Luque, Librado Carrasco, Francisco Jurado-Martos, María Ángeles Risalde, Ángel Venteo, José A Infantes-Lorenzo, Javier Bezos, Paloma Rueda, Istar Tapia, Christian Gortázar, Lucas Domínguez, Mercedes Domínguez, Jaime Gomez-Laguna
In countries where bovine tuberculosis (bTB) is still prevalent the contact among different animal species in extensive systems contributes to the circulation of Mycobacterium bovis (M. bovis) and other members of the Mycobacterium tuberculosis complex (MTC). Thus, free-range pigs can develop subclinical infections and may contribute to disease spread to bovine and wildlife. Serodiagnosis has been proposed as a screening tool for detecting infected pig herds; however, the value of this method to obtain an accurate diagnosis in this species is still not clear...
December 29, 2016: Preventive Veterinary Medicine
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