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https://www.readbyqxmd.com/read/29302056/human-macrophages-differentially-produce-specific-resolvin-or-leukotriene-signals-that-depend-on-bacterial-pathogenicity
#1
Oliver Werz, Jana Gerstmeier, Stephania Libreros, Xavier De la Rosa, Markus Werner, Paul C Norris, Nan Chiang, Charles N Serhan
Proinflammatory eicosanoids (prostaglandins and leukotrienes) and specialized pro-resolving mediators (SPM) are temporally regulated during infections. Here we show that human macrophage phenotypes biosynthesize unique lipid mediator signatures when exposed to pathogenic bacteria. E. coli and S. aureus each stimulate predominantly proinflammatory 5-lipoxygenase (LOX) and cyclooxygenase pathways (i.e., leukotriene B4 and prostaglandin E2) in M1 macrophages. These pathogens stimulate M2 macrophages to produce SPMs including resolvin D2 (RvD2), RvD5, and maresin-1...
January 4, 2018: Nature Communications
https://www.readbyqxmd.com/read/29238967/potent-anti-inflammatory-and-pro-resolving-effects-of-anabasum-in-a-human-model-of-self-resolving-acute-inflammation
#2
Madhur P Motwani, Frances Bennett, Paul C Norris, Alexander A Maini, Marc J George, Justine Newson, Alice Henderson, Adrian J Hobbs, Mark Tepper, Barbara White, Charles N Serhan, Raymond MacAllister, Derek W Gilroy
Anabasum is a synthetic analogue of Δ8 - tetrahydrocannabinol (THC)-11-oic acid that in pre-clinical models of experimental inflammation exerts potent anti-inflammatory actions with minimal CNS cannabimimetic activity. Here we used a novel model of acute inflammation driven by i.d. UV-killed E. coli in healthy humans and found that Anabasum (5mg) exerted a potent anti-inflammatory effect equivalent to that of prednisolone in terms of inhibiting neutrophil infiltration, the hallmark of acute inflammation. These effects arose from the inhibition of the neutrophil chemoattractant LTB4 , while the inhibition of anti-phagocytic prostanoids (PGE2 , TxB2 and PGF2 α) resulted in enhanced clearance of inflammatory stimulus from the injected site...
December 14, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29238725/the-accuracy-of-new-and-aged-mechanical-torque-devices-employed-in-five-dental-implant-systems
#3
Mehmet Ali Erdem, Burcin Karatasli, Onur Dinçer Kose, Taha Emre Kose, Erhan Çene, Serhan Aydın Aya, Abdulkadir Burak Cankaya
Purpose: Friction-style and spring-style torque wrenches are used to tighten implant abutments and prosthetic screws. The mechanical stability of these torque wrenches is crucial for the implant-abutment connection. The purposes of this study were to assess the performance of five brands (Straumann, Zimmer, Implant KA, Bredent, and Biohorizons) of wrench and to evaluate possible changes in applied torque values of aged wrenches. Materials and Methods: Five new and aged wrenches that had been used approximately 250 times in a 1-year period were tested...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29237362/de-novo-malignancies-after-liver-transplantation-a-single-institution-experience
#4
Tufan Egeli, Tarkan Unek, Mucahit Ozbilgin, Cihan Agalar, Serhan Derici, Mesut Akarsu, Ilkay Tugba Unek, Murat Aysin, Aylin Bacakoglu, Ibrahim Astarcıoglu
OBJECTIVES: Our objective was to analyze characteristics, risk factors, and incidence of de novo malignancies after liver transplant. MATERIALS AND METHODS: The hospital records of 557 patients who underwent liver transplant were analyzed from the point of de novo malignancy development. We evaluated the demographic features and survival of these patients retrospectively. RESULTS: The research covered 429 patients, 9 (2%) of whom developed de novo malignancy...
December 14, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29199269/dendrogenin-a-drives-lxr-to-trigger-lethal-autophagy-in-cancers
#5
Gregory Segala, Marion David, Philippe de Medina, Mathias C Poirot, Nizar Serhan, François Vergez, Aurelie Mougel, Estelle Saland, Kevin Carayon, Julie Leignadier, Nicolas Caron, Maud Voisin, Julia Cherier, Laetitia Ligat, Frederic Lopez, Emmanuel Noguer, Arnaud Rives, Bruno Payré, Talal Al Saati, Antonin Lamaziere, Gaëtan Despres, Jean-Marc Lobaccaro, Silvere Baron, Cecile Demur, Fabienne de Toni, Clément Larrue, Helena Boutzen, Fabienne Thomas, Jean-Emmanuel Sarry, Marie Tosolini, Didier Picard, Michel Record, Christian Récher, Marc Poirot, Sandrine Silvente-Poirot
Dendrogenin A (DDA) is a newly discovered cholesterol metabolite with tumor suppressor properties. Here, we explored its efficacy and mechanism of cell death in melanoma and acute myeloid leukemia (AML). We found that DDA induced lethal autophagy in vitro and in vivo, including primary AML patient samples, independently of melanoma Braf status or AML molecular and cytogenetic classifications. DDA is a partial agonist on liver-X-receptor (LXR) increasing Nur77, Nor1, and LC3 expression leading to autolysosome formation...
December 4, 2017: Nature Communications
https://www.readbyqxmd.com/read/29191914/resolvins-suppress-tumor-growth-and-enhance-cancer-therapy
#6
Megan L Sulciner, Charles N Serhan, Molly M Gilligan, Dayna K Mudge, Jaimie Chang, Allison Gartung, Kristen A Lehner, Diane R Bielenberg, Birgitta Schmidt, Jesmond Dalli, Emily R Greene, Yael Gus-Brautbar, Julia Piwowarski, Tadanori Mammoto, David Zurakowski, Mauro Perretti, Vikas P Sukhatme, Arja Kaipainen, Mark W Kieran, Sui Huang, Dipak Panigrahy
Cancer therapy reduces tumor burden by killing tumor cells, yet it simultaneously creates tumor cell debris that may stimulate inflammation and tumor growth. Thus, conventional cancer therapy is inherently a double-edged sword. In this study, we show that tumor cells killed by chemotherapy or targeted therapy ("tumor cell debris") stimulate primary tumor growth when coinjected with a subthreshold (nontumorigenic) inoculum of tumor cells by triggering macrophage proinflammatory cytokine release after phosphatidylserine exposure...
November 30, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29163481/pro-resolving-mediators-in-regulating-and-conferring-macrophage-function
#7
REVIEW
Jesmond Dalli, Charles N Serhan
Macrophages are central in coordinating the host response to both sterile and infective insults. Clearance of apoptotic cells and cellular debris is a key biological action preformed by macrophages that paves the way to the resolution of local inflammation, repair and regeneration of damaged tissues, and re-establishment of function. The essential fatty acid-derived autacoids termed specialized pro-resolving mediators (SPM) play central roles in promoting these processes. In the present article, we will review the role of microvesicles in controlling macrophage efferocytosis and SPM production...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29156772/stat3-and-stat5a-are-potential-therapeutic-targets-in-castration-resistant-prostate-cancer
#8
Sambit K Mohanty, Kader Yagiz, Dinesh Pradhan, Daniel J Luthringer, Mahul B Amin, Serhan Alkan, Bekir Cinar
Mechanisms of castration-resistant prostate cancer (CRPC) are not well understood, thus hindering rational-based drug design. Activation of STAT3/5A, key components of the JAK/STAT pathway, is implicated in aggressive PC, yet their clinical relevance in CRPC remains elusive. Here, we evaluated the possible role of STAT3/5A in CRPC using immunological, quantitative mRNA expression profiling, and pharmacological methods. We observed a strong nuclear immunoreactivity for STAT3 and STAT5A in 93% (n=14/15) and 80% (n=12/15) of CRPC cases, respectively, compared with benign prostatic hyperplasia (BPH)...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29154174/immunoresolvents-signaling-molecules-at-intersection-between-the-brain-and-immune-system
#9
REVIEW
Jesmond Dalli, Charles N Serhan
Understanding mechanisms that control immunity is central in the quest to gain insights into the etiopathology of many of the diseases that afflict modern societies. New results implicate the nervous system as a central player in controlling many aspects of both the innate and adaptive arms of the immune response. Furthermore it is now well appreciated that a novel group of autacoids termed as specialized proresolving mediators, which are enzymatically produced from essential fatty acids, orchestrate the immune response promoting the termination of inflammation as well as tissue repair and regeneration...
November 16, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29138655/endobronchial-localization-of-hodgkin-s-disease
#10
Lamyae Amro, Siham Jridi, Hafsa Sajiai, Hind Serhane, Salma Aït Batahar
The endobronchial localization of Hodgkin's disease is a rare entity which is often confused with endobronchial tuberculosis in our setting. We report the case of a 16 years old female who presented with 6 months history of dry cough, hemoptysis, dyspnea, dysphagia and dysphonia. The chest radiography showed a mediastinal and pulmonary opacity. The chest CT scan found enlarged mediastinal lymph nodes. The bronchial biopsy and peripheral lymph node biopsy confirmed Hodgkin's disease with endobronchial localization...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/29121379/olfactory-dysfunction-in-%C3%AE-thalassemia-major-patients-treated-with-iron-chelating-agents
#11
Serhan Derin, Selvet Erdogan, Murat Sahan, Mehmet Fatih Azik, Hatice Derin, Yasar Topal, Hatice Topal
Ocular and ophthalmologic adverse effects may occur in patients with β-thalassemia major (BTM) treated regularly with blood transfusions and iron-chelating agents. We hypothesized that olfactory dysfunction may be present in this patient population. We aimed to investigate olfactory dysfunction in patients with BTM and to determine etiologic factors. A total of 43 patients with BTM were included in the study. Forty-three subjects without nasal complaints, history of facial trauma, or nasal surgery were included as the controls...
October 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29110146/atherosclerosis-periodontal-disease-and-treatment-with-resolvins
#12
REVIEW
James A Hamilton, Hatice Hasturk, Alpdogan Kantarci, Charles N Serhan, Thomas Van Dyke
PURPOSE OF REVIEW: This review aims to discuss the existing evidence on the link between atherosclerosis and periodontitis by particularly presenting new findings that link the pathology and therapy of these diseases. Acute vascular ischemic events that can lead to stroke or myocardial infarction are initiated by inflammatory processes leading to rupture or erosion of plaques susceptible to thrombosis ("high risk" or "vulnerable"). These are highly inflamed plaques residing in the media and adventitia that may not be detected by angiography measurments of luminal narrowing...
November 6, 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29109375/model-based-localization-and-tracking-using-bluetooth-low-energy-beacons
#13
F Serhan Daniş, Ali Taylan Cemgil
We introduce a high precision localization and tracking method that makes use of cheap Bluetooth low-energy (BLE) beacons only. We track the position of a moving sensor by integrating highly unreliable and noisy BLE observations streaming from multiple locations. A novel aspect of our approach is the development of an observation model, specifically tailored for received signal strength indicator (RSSI) fingerprints: a combination based on the optimal transport model of Wasserstein distance. The tracking results of the entire system are compared with alternative baseline estimation methods, such as nearest neighboring fingerprints and an artificial neural network...
October 29, 2017: Sensors
https://www.readbyqxmd.com/read/29109286/circadian-clock-cryptochrome-proteins-regulate-autoimmunity
#14
Qi Cao, Xuan Zhao, Jingwen Bai, Sigal Gery, Haibo Sun, De-Chen Lin, Qi Chen, Zhengshan Chen, Lauren Mack, Henry Yang, Ruishu Deng, Xianping Shi, Ling-Wa Chong, Han Cho, Jianjun Xie, Quan-Zhen Li, Markus Müschen, Annette R Atkins, Christopher Liddle, Ruth T Yu, Serhan Alkan, Jonathan W Said, Ye Zheng, Michael Downes, Ronald M Evans, H Phillip Koeffler
The circadian system regulates numerous physiological processes including immune responses. Here, we show that mice deficient of the circadian clock genes Cry1 and Cry2 [Cry double knockout (DKO)] develop an autoimmune phenotype including high serum IgG concentrations, serum antinuclear antibodies, and precipitation of IgG, IgM, and complement 3 in glomeruli and massive infiltration of leukocytes into the lungs and kidneys. Flow cytometry of lymphoid organs revealed decreased pre-B cell numbers and a higher percentage of mature recirculating B cells in the bone marrow, as well as increased numbers of B2 B cells in the peritoneal cavity of Cry DKO mice...
November 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29105179/electronic-and-structural-dynamics-during-the-switching-of-the-photomagnetic-complex-fe-l222n5-cn-2
#15
Serhane Zerdane, Eric Collet, Xu Dong, Samir F Matar, Hongfeng F Wang, Cedric Desplanches, Guillaume Chastanet, Matthieu Chollet, James M Glownia, Henrik T Lemke, Maciej Lorenc, Marco Cammarata
The [Fe(L222N5)(CN)2] compound, where L222N5 refers to the macrocyclic Schiff-base ligand, 2,13-dimethyl-3,6,9,-12,18-pentaazabicyclo[12.3.1]octadeca-1(18),2,12,14,16-pentaene, is a photomagnetic FeII based coordination compound, which undergoes light-induced excited spin-state trapping (LIESST). The low spin state is hexacoordinated and the high spin state heptacoordinated. This system also serves as complex for the design of trinuclear or one-dimensional compounds made of other types of bricks with diverse coordinated metals...
November 3, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29102502/total-knee-replacement-cementless-tibial-fixation-with-screws-10-year-results
#16
Önder Ersan, Alper Öztürk, Mehmet Faruk Çatma, Serhan Ünlü, Mutlu Akdoğan, Yalım Ateş
BACKGROUND: The aim of this study was to evaluate the long term clinical and radiological results of cementless total knee replacement. METHODS: A total of 51 knees of 49 patients (33 female and 16 male; mean age: 61.6 years (range, 29-66 years)) who underwent TKR surgery with a posterior stabilized hydroxyapatite coated knee implant were included in this study. All of the tibial components were fixed with screws. The HSS scores were examined preoperatively and at the final follow-up...
November 1, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29089970/pectoral-muscular-twitching-a-rare-manifestation-of-spontaneous-twiddler-syndrome
#17
Serdar Bozyel, Tolga Aksu, Tumer Erdem Guler, Kazım Serhan Ozcan, Mujdat Aktas
No abstract text is available yet for this article.
August 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/29078321/identification-of-a-tumor-promoter-cholesterol-metabolite-in-human-breast-cancers-acting-through-the-glucocorticoid-receptor
#18
Maud Voisin, Philippe de Medina, Arnaud Mallinger, Florence Dalenc, Emilie Huc-Claustre, Julie Leignadier, Nizar Serhan, Régis Soules, Grégory Ségala, Aurélie Mougel, Emmanuel Noguer, Loubna Mhamdi, Elodie Bacquié, Luigi Iuliano, Chiara Zerbinati, Magali Lacroix-Triki, Léonor Chaltiel, Thomas Filleron, Vincent Cavaillès, Talal Al Saati, Philippe Rochaix, Raphaelle Duprez-Paumier, Camille Franchet, Laetitia Ligat, Fréderic Lopez, Michel Record, Marc Poirot, Sandrine Silvente-Poirot
Breast cancer (BC) remains the primary cause of death from cancer among women worldwide. Cholesterol-5,6-epoxide (5,6-EC) metabolism is deregulated in BC but the molecular origin of this is unknown. Here, we have identified an oncometabolism downstream of 5,6-EC that promotes BC progression independently of estrogen receptor α expression. We show that cholesterol epoxide hydrolase (ChEH) metabolizes 5,6-EC into cholestane-3β,5α,6β-triol, which is transformed into the oncometabolite 6-oxo-cholestan-3β,5α-diol (OCDO) by 11β-hydroxysteroid-dehydrogenase-type-2 (11βHSD2)...
October 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29073788/affective-temperaments-during-pregnancy-and-postpartum-period-a-click-to-hyperthymic-temperament
#19
Esra Yazici, Hilal Uslu Yuvaci, Ahmet Bulent Yazici, Arif Serhan Cevrioglu, Atila Erol
BACKGROUND: Pregnancy and postpartum periods are the main reproductive periods during which women experience mood disorders. Affective temperaments are known antecedents of mood disorders and their importance is increasing in time for early diagnosis and determining risky groups. But data about affective temperaments during perinatal period is limited. METHODS: Women during pregnancy and perinatal period and healthy controls who are not in perinatal period are included in the study...
October 26, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29057147/microscale-arrays-for-the-profiling-of-start-and-stop-signals-coordinating-human-neutrophil-swarming
#20
Eduardo Reátegui, Fatemeh Jalali, Aimal H Khankhel, Elisabeth Wong, Hansang Cho, Jarone Lee, Charles N Serhan, Jesmond Dalli, Hunter Elliott, Daniel Irimia
Neutrophil swarms protect healthy tissues by sealing off sites of infection. In the absence of swarming, microbial invasion of surrounding tissues can result in severe infections. Recent observations in animal models have shown that swarming requires rapid neutrophil responses and well-choreographed neutrophil migration patterns. However, in animal models physical access to the molecular signals coordinating neutrophil activities during swarming is limited. Here, we report the development and validation of large microscale arrays of zymosan-particle clusters for the study of human neutrophils during swarming ex vivo...
2017: Nature Biomedical Engineering
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