keyword
MENU ▼
Read by QxMD icon Read
search

Neutrophil imaging

keyword
https://www.readbyqxmd.com/read/28528454/new-insights-into-pericarditis-mechanisms-of-injury-and-therapeutic-targets
#1
REVIEW
Bo Xu, Serge C Harb, Paul C Cremer
PURPOSE OF REVIEW: This review article aims to provide a contemporary insight into the pathophysiological mechanisms of and therapeutic targets for pericarditis, drawing distinction between autoinflammatory and autoimmune pericarditis. RECENT FINDINGS: Recent research has focused on the distinction between autoinflammatory and autoimmune pericarditis. In autoinflammatory pericarditis, viruses can activate the sensor molecule of the inflammasome, which results in downstream release of cytokines, such as interleukin-1, that recruit neutrophils and macrophages to the site of injury...
July 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28526762/exacerbation-of-thromboinflammation-by-hyperglycemia-precipitates-cerebral-infarct-growth-and-hemorrhagic-transformation
#2
Jean-Philippe Desilles, Varouna Syvannarath, Véronique Ollivier, Clément Journé, Sandrine Delbosc, Célina Ducroux, William Boisseau, Liliane Louedec, Lucas Di Meglio, Stéphane Loyau, Martine Jandrot-Perrus, Louis Potier, Jean-Baptiste Michel, Mikael Mazighi, Benoit Ho-Tin-Noé
BACKGROUND AND PURPOSE: Admission hyperglycemia is associated with a poor outcome in acute ischemic stroke. How hyperglycemia impacts the pathophysiology of acute ischemic stroke remains largely unknown. We investigated how preexisting hyperglycemia increases ischemia/reperfusion cerebral injury. METHODS: Normoglycemic and streptozotocin-treated hyperglycemic rats were subjected to transient middle cerebral artery occlusion. Infarct growth and brain perfusion were assessed by magnetic resonance imaging...
May 19, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28489916/generational-distribution-of-a-candida-glabrata-population-resilient-old-cells-prevail-while-younger-cells-dominate-in-the-vulnerable-host
#3
Tejas Bouklas, Luz Alonso-Crisóstomo, Tamás Székely, Elizabeth Diago-Navarro, Erika P Orner, Kalie Smith, Mansa A Munshi, Maurizio Del Poeta, Gábor Balázsi, Bettina C Fries
Similar to other yeasts, the human pathogen Candida glabrata ages when it undergoes asymmetric, finite cell divisions, which determines its replicative lifespan. We sought to investigate if and how aging changes resilience of C. glabrata populations in the host environment. Our data demonstrate that old C. glabrata are more resistant to hydrogen peroxide and neutrophil killing, whereas young cells adhere better to epithelial cell layers. Consequently, virulence of old compared to younger C. glabrata cells is enhanced in the Galleria mellonella infection model...
May 10, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28486563/in-vitro-induction-of-netosis-comprehensive-live-imaging-comparison-and-systematic-review
#4
Tamara Hoppenbrouwers, Anouchska S A Autar, Andi R Sultan, Tsion E Abraham, Wiggert A van Cappellen, Adriaan B Houtsmuller, Willem J B van Wamel, Heleen M M van Beusekom, Johan W van Neck, Moniek P M de Maat
BACKGROUND: Multiple inducers of in vitro Neutrophil Extracellular Trap (NET) formation (NETosis) have been described. Since there is much variation in study design and results, our aim was to create a systematic review of NETosis inducers and perform a standardized in vitro study of NETosis inducers important in (cardiac) wound healing. METHODS: In vitro NETosis was studied by incubating neutrophils with PMA, living and dead bacteria (S. aureus and E. coli), LPS, (activated) platelets (supernatant), glucose and calcium ionophore Ionomycin using 3-hour periods of time-lapse confocal imaging...
2017: PloS One
https://www.readbyqxmd.com/read/28475518/palisaded-neutrophilic-and-granulomatous-dermatitis-interstitial-granulomatous-dermatitis-overlap-a-striking-clinical-and-histologic-presentation-with-burning-rope-sign-and-subsequent-mirror-image-contralateral-recurrence
#5
Malan Kern, Mallory B Shiver, Kristen M Addis, Jerad M Gardner
Palisaded neutrophilic and granulomatous dermatitis and interstitial granulomatous dermatitis are uncommon granulomatous dermatoses that often arise in association with rheumatoid arthritis. These 2 entities have overlapping features and may exist on a spectrum. We report an intriguing case of a 53-year-old man with advanced rheumatoid arthritis who presented with a large indurated painful truncal plaque with a palpable cord in addition to a papulonodular eruption on his dorsal hands. Furthermore, our patient had a recurrence in a near-identical mirror-image pattern on the contralateral trunk...
April 27, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28464614/imaging-xps-and-photoemission-electron-microscopy-surface-chemical-mapping-and-blood-cell-visualization
#6
Andreas Skallberg, Caroline Brommesson, Kajsa Uvdal
Combined photoemission electron microscopy (PEEM) and imaging x-ray photoelectron spectroscopy (XPS), i.e., electron spectroscopy for chemical analysis in the nanoregion, has been used for surface characterization of bio-relevant and biological samples. In the first example, the authors prepared a gold patterned silicon substrate, stepwise surface modified by self-assembled monolayers followed by quantum dot (QDot) specific linking and investigated by means of work function mapping and elemental imaging in the submicrometer range...
May 2, 2017: Biointerphases
https://www.readbyqxmd.com/read/28462648/predicting-response-to-neoadjuvant-chemoradiotherapy-in-locally-advanced-rectal-cancer-with-serum-biomarkers
#7
T L Clarke, D A White, M E Osborne, A M Shaw, N J Smart, I R Daniels
Introduction The aim of this study was to identify patient factors including serum biomarkers that may predict response to neoadjuvant chemoradiotherapy (CRT) in patients with locally advanced rectal cancer staged on magnetic resonance imaging. Prediction of response may be helpful when selecting patients for a non-operative programme. Methods A retrospective review was carried out of patients undergoing neoadjuvant CRT for rectal cancer, conducted at the Royal Devon and Exeter Hospital. All patients were managed through the multidisciplinary team...
May 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28461650/clinical-profiles-and-prognosis-of-patients-with-distinct-antisynthetase-autoantibodies
#8
Jingli Shi, Shanshan Li, Hanbo Yang, Yamei Zhang, Qinglin Peng, Xin Lu, Guochun Wang
OBJECTIVE: To compare the clinical characteristics and identify the longterm outcomes of Chinese patients with different antisynthetase antibodies. METHODS: We investigated retrospectively 124 consecutive patients with antisynthetase syndrome. Medical records, laboratory results, and computed tomography images were obtained. RESULTS: The antisynthetase antibodies we investigated were anti-Jo1 (n = 62), anti-PL7 (n = 31), anti-PL12 (n = 12), and anti-EJ (n = 19)...
May 1, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28456452/oral-mass-revealing-ch%C3%A3-diak-higashi-syndrome
#9
T Tsuji, Y Uemura, Y Nakamura, S Nonoyama
This case report describes common oral inflammatory findings leading to the identification of Chédiak-Higashi syndrome (CHS). A 15-year-old girl presented with an enlarging and painful mass on the upper lip. Two weeks after the initial visit, the mass showed further protrusion in the absence of fever. Magnetic resonance imaging revealed a well-circumscribed cystic lesion with a thick capsule, and suggested an abscess derived from the mucous cyst in the upper lip. Inflammation indices were not elevated; however neutrophils were significantly lower than the normal level...
April 26, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28450389/mertk-expressing-hepatic-macrophages-promote-the-resolution-of-inflammation-in-acute-liver-failure
#10
Evangelos Triantafyllou, Oltin T Pop, Lucia A Possamai, Annika Wilhelm, Evaggelia Liaskou, Arjuna Singanayagam, Christine Bernsmeier, Wafa Khamri, Gemma Petts, Rebecca Dargue, Scott P Davies, Joseph Tickle, Muhammed Yuksel, Vishal C Patel, Robin D Abeles, Zania Stamataki, Stuart M Curbishley, Yun Ma, Ian D Wilson, Muireann Coen, Kevin J Woollard, Alberto Quaglia, Julia Wendon, Mark R Thursz, David H Adams, Chris J Weston, Charalambos G Antoniades
OBJECTIVE: Acute liver failure (ALF) is characterised by overwhelming hepatocyte death and liver inflammation with massive infiltration of myeloid cells in necrotic areas. The mechanisms underlying resolution of acute hepatic inflammation are largely unknown. Here, we aimed to investigate the impact of Mer tyrosine kinase (MerTK) during ALF and also examine how the microenvironmental mediator, secretory leucocyte protease inhibitor (SLPI), governs this response. DESIGN: Flow cytometry, immunohistochemistry, confocal imaging and gene expression analyses determined the phenotype, functional/transcriptomic profile and tissue topography of MerTK+ monocytes/macrophages in ALF, healthy and disease controls...
April 27, 2017: Gut
https://www.readbyqxmd.com/read/28448042/imaging-the-neutrophil-phagosome-and-cytoplasm-using-a-ratiometric-ph-indicator
#11
Juliet R Foote, Adam P Levine, Philippe Behe, Michael R Duchen, Anthony W Segal
Neutrophils are crucial to host innate defense and, consequently, constitute an important area of medical research. The phagosome, the intracellular compartment where the killing and digestion of engulfed particles take place, is the main arena for neutrophil pathogen killing that requires tight regulation. Phagosomal pH is one aspect that is carefully controlled, in turn regulating antimicrobial protease activity. Many fluorescent pH-sensitive dyes have been used to visualize the phagosomal environment. S-1 has several advantages over other pH-sensitive dyes, including its dual emission spectra, its resistance to photo-bleaching, and its high pKa...
April 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28448018/live-imaging-of-antifungal-activity-by-human-primary-neutrophils-and-monocytes-in-response-to-a-fumigatus
#12
Shan F Brunel, Jude M Bain, Jill King, Lena J Heung, Shinji Kasahara, Tobias M Hohl, Adilia Warris
Aspergillus fumigatus is an opportunistic fungal pathogen causing invasive infections in immunocompromised hosts with a high case-fatality rate. Research investigating immunological responses against A. fumigatus has been limited by the lack of consistent and reliable assays for measuring the antifungal activity of specific immune cells in vitro. A new method is described to assess the antifungal activity of primary monocytes and neutrophils from human donors against A. fumigatus using FLuorescent Aspergillus REporter (FLARE) conidia...
April 19, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447455/efficiency-and-safety-of-%C3%AE-cd-d3-7-as-sirna-carrier-for-decreasing-matrix-metalloproteinase-9-expression-and-improving-wound-healing-in-diabetic-rats
#13
Na Li, Heng-Cong Luo, Meng Ren, Li-Ming Zhang, Wei Wang, Cheng-Lin Pan, Li-Qun Yang, Guo-Juan Lao, Jun-Jie Deng, Kai-Jin Mai, Kan Sun, Chuan Yang, Li Yan
Overexpression of matrix metalloproteinase-9 (MMP-9) is critical for diabetic chronic wounds involved in the refractory wound healing process. We aimed to develop a strategy through RNAi to decrease MMP-9 expression and improve diabetic wound healing. We had explored β-CD-(D3)7 as a gene carrier to take siRNA and effectively interfere with MMP-9 expression. It has been proven that β-CD-(D3)7 could be used as an effective siRNA delivery system. In this study, we want to know about the efficiency and safety of β-CD-(D3)7/MMP-9 siRNA for improving wound healing in diabetic rats...
May 5, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28441828/-clinical-analysis-of-seven-cases-of-pulmonary-malignant-tumors-in-children
#14
D Xu, Z M Chen, W Z Gu, Y S Wang, M X Huang, L F Tang, Y Y Zhang, Y Jiang
Objective: To understand the clinical manifestation, imaging characteristics and outcomes of pulmonary malignant tumors in children. Method: We retrospectively collected information about seven cases of pulmonary malignant tumors in children in our hospital from Jan 2010 to Dec 2016. The information included clinical manifestation, imaging characteristics, pathologic results, and treatment. Result: (1) All the seven patients firstly visited pediatric internal medicine departments. Symptoms included cough (n=6), dyspnea (n=4), fever (n=2), anorexia (n=2), chest tightness (n=1), chest pain (n=1), lameness (n=1), abdominal distension and constipation (n=1)...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28440832/nanoemitters-and-innate-immunity-the-role-of-surfactants-and-bio-coronas-in-myeloperoxidase-catalyzed-oxidation-of-pristine-single-walled-carbon-nanotubes
#15
Cheuk Fai Chiu, Haider H Dar, Alexandr A Kapralov, Renã A S Robinson, Valerian E Kagan, Alexander Star
Single-walled carbon nanotubes (SWCNTs) are experimentally utilized in in vivo imaging and photothermal cancer therapy owing to their unique physicochemical and electronic properties. For these applications, pristine carbon nanotubes are often modified by polymer surfactant coatings to improve their biocompatibility, adding more complexity to their recognition and biodegradation by immuno-competent cells. Here, we investigate the oxidative degradation of SWCNTs catalyzed by neutrophil myeloperoxidase (MPO) using bandgap near-infrared (NIR) photoluminescence and Raman spectroscopy...
May 11, 2017: Nanoscale
https://www.readbyqxmd.com/read/28438899/galectin-3-a-positive-regulator-of-leukocyte-recruitment-in-the-inflamed-microcirculation
#16
Beatrice R Gittens, Jennifer V Bodkin, Sussan Nourshargh, Mauro Perretti, Dianne Cooper
In vivo and ex vivo imaging were used to investigate the function of galectin-3 (Gal-3) during the process of leukocyte recruitment to the inflamed microcirculation. The cremasteric microcirculation of wild-type (C57BL/6), Gal-3(-/-), and CX3CR1(gfp/+) mice were assessed by intravital microscopy after PBS, IL-1β, TNF-α, or recombinant Gal-3 treatment. These cellular responses were investigated further using flow-chamber assays, confocal microscopy, flow cytometry, PCR analysis, and proteome array. We show that mechanisms mediating leukocyte slow rolling and emigration are impaired in Gal-3(-/-) mice, which could be because of impaired expression of cell adhesion molecules and an altered cell surface glycoproteome...
April 24, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28427133/-effects-of-application-of-vancomycin-in-the-early-stage-of-patients-with-extremely-severe-burn
#17
Z Zhu, G W Cao, J J Bao, Z H Hu, Z Shen, H Tao, B Cao, F Xu
Objective: To evaluate the effects of application of vancomycin in the early stage of patients with extremely severe burn, in order to provide reference to drug for anti-infection treatment in the early stage of patients with extremely severe burn. Methods: Data of 15 patients of Kunshan explosion on August 2nd, 2014, admitted to the Department of Intensive Care in our hospital were retrospectively analyzed. The clinical efficacy of continuously intravenous dripping of vancomycin (combined with imipenem) in the early stage of burns (before and on post burn day 14) was analyzed...
April 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28424248/splenic-ly6g-high-mature-and-ly6g-int-immature-neutrophils-contribute-to-eradication-of-s-pneumoniae
#18
Justin F Deniset, Bas G Surewaard, Woo-Yong Lee, Paul Kubes
The spleen plays an integral protective role against encapsulated bacterial infections. Our understanding of the associated mechanisms is limited to thymus-independent (TI) antibody production by the marginal zone (MZ) B cells, leaving the contribution of other splenic compartments such as the red pulp (RP) largely unexplored despite asplenic patients succumbing to the infection in the first 24 h, suggesting important antibody-independent mechanisms. In this study, using time-lapse intravital imaging of the spleen, we identify a tropism for Streptococcus pneumoniae in this organ mediated by tissue-resident MZ and RP macrophages and a protective role for two distinct splenic neutrophil populations (Ly6G(hi) and Ly6G(intermediate)) residing in the splenic RP...
May 1, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28421831/a-novel-automated-slide-based-technology-for-visualization-counting-and-characterization-of-the-formed-elements-of-blood-a-proof-of-concept-study
#19
James W Winkelman, Milenko J Tanasijevic, David J Zahniser
CONTEXT: - A novel automated slide-based approach to the complete blood count and white blood cell differential count is introduced. OBJECTIVE: - To present proof of concept for an image-based approach to complete blood count, based on a new slide preparation technique. A preliminary data comparison with the current flow-based technology is shown. DESIGN: - A prototype instrument uses a proprietary method and technology to deposit a precise volume of undiluted peripheral whole blood in a monolayer onto a glass microscope slide so that every cell can be distinguished, counted, and imaged...
April 19, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28400130/salmonella-typhimurium-induces-cloacitis-like-symptomsin-zebrafish-larvae
#20
Macarena Varas, Javiera Ortíz-Severín, Andrés E Marcoleta, Francisco Díaz-Pascual, Miguel L Allende, Carlos A Santiviago, Francisco P Chávez
Pathogenic Salmonella strains have a set of virulence factors allowing them to generate systemic infections and damage in a variety of hosts. Among these factors, bacterial proteins secreted by specialized systems are used to penetrate the host's intestinal mucosa, through the invasion and destruction of specialized epithelial M cells in the intestine. On the other hand, numerous studies have demonstrated that humans, as well as experimental animal hosts, respond to Salmonella infection by activating both innate and adaptive immune responses...
April 8, 2017: Microbial Pathogenesis
keyword
keyword
53542
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"