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Frontiers in Medicine

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https://www.readbyqxmd.com/read/28083535/sundowning-in-dementia-clinical-relevance-pathophysiological-determinants-and-therapeutic-approaches
#1
REVIEW
Marco Canevelli, Martina Valletta, Alessandro Trebbastoni, Giuseppe Sarli, Fabrizia D'Antonio, Leonardo Tariciotti, Carlo de Lena, Giuseppe Bruno
Sundowning means the emergence or worsening of neuropsychiatric symptoms (NPS) in the late afternoon or early evening. This syndrome has been recognized since a long time in the field of dementing illnesses and is well known among most of health-care providers involved in the assistance of people with dementia. Indeed, it represents a common manifestation among persons with dementia and is associated with several adverse outcomes (such as institutionalization, faster cognitive worsening, and greater caregiver burden)...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/28083534/the-efficacy-of-triamcinolone-acetonide-in-keloid-treatment-a-systematic-review-and-meta-analysis
#2
Thian-Sze Wong, John Zeng-Hong Li, Siqi Chen, Jimmy Yu-Wai Chan, Wei Gao
Keloid is a cutaneous dermal outgrowth resulting from uncontrolled deposition of collagen and glycosaminoglycan around the wound. The uncontrolled and persistent growth of keloids scar will result in cosmetic disfigurement, functional impairment, and affect the quality of life. Triamcinolone acetonide (TAC) is traditionally employed in treating keloid scars. In this study, we aim to evaluate the effectiveness of TAC and compare it with other common therapy employed in keloid treatment. Only randomized controlled trial (RCT) and controlled trial were included...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/28066770/effects-of-constant-flow-vs-constant-pressure-perfusion-on-fluid-filtration-in-severe-hypothermic-isolated-blood-perfused-rat-lungs
#3
Kathrine Halsøy, Timofey Kondratiev, Torkjel Tveita, Lars J Bjertnaes
BACKGROUND: Victims of severe accidental hypothermia are prone to fluid extravasation but rarely develop lung edema. We hypothesize that combined hypothermia-induced increase in pulmonary vascular resistance (PVR) and a concomitant fall in cardiac output protect the lungs against edema development. Our aim was to explore in hypothermic-isolated blood-perfused rat lungs whether perfusion at constant pressure influences fluid filtration differently from perfusion at constant flow. METHODS: Isolated blood-perfused rat lungs were hanging freely in a weight transducer for measuring weight changes (ΔW)...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/28066769/liquid-biopsy-in-non-small-cell-lung-cancer
#4
REVIEW
Miguel A Molina-Vila, Clara Mayo-de-Las-Casas, Ana Giménez-Capitán, Núria Jordana-Ariza, Mónica Garzón, Ariadna Balada, Sergi Villatoro, Cristina Teixidó, Beatriz García-Peláez, Cristina Aguado, María José Catalán, Raquel Campos, Ana Pérez-Rosado, Jordi Bertran-Alamillo, Alejandro Martínez-Bueno, María-de-Los-Llanos Gil, María González-Cao, Xavier González, Daniela Morales-Espinosa, Santiago Viteri, Niki Karachaliou, Rafael Rosell
Liquid biopsy analyses are already incorporated in the routine clinical practice in many hospitals and oncology departments worldwide, improving the selection of treatments and monitoring of lung cancer patients. Although they have not yet reached its full potential, liquid biopsy-based tests will soon be as widespread as "standard" biopsies and imaging techniques, offering invaluable diagnostic, prognostic, and predictive information. This review summarizes the techniques available for the isolation and analysis of circulating free DNA and RNA, exosomes, tumor-educated platelets, and circulating tumor cells from the blood of cancer patients, presents the methodological challenges associated with each of these materials, and discusses the clinical applications of liquid biopsy testing in lung cancer...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/28066768/focus-on-nintedanib-in-nsclc-and-other-tumors
#5
REVIEW
Anna Manzo, Guido Carillio, Agnese Montanino, Raffaele Costanzo, Claudia Sandomenico, Gaetano Rocco, Alessandro Morabito
Nintedanib is a new triple angiokinase inhibitor that potently blocks the proangiogenic pathways mediated by vascular endothelial growth factor receptors, platelet-derived growth factor receptors, and fibroblast growth factor receptors. Evidence about its efficacy in addition to second-line chemotherapy in non-small cell lung cancer (NSCLC) has been produced by two large randomized phase III clinical trials (LUME-Lung 1 and LUME-Lung 2), conducted in patients with pretreated NSCLC, without major risk factors for bleeding...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/28018902/focus-on-nivolumab-in-nsclc
#6
REVIEW
Diego L Cortinovis, Stefania Canova, Marida Abbate, Francesca Colonese, Paolo Bidoli
Immunotherapy is changing the treatment of non-small cell lung cancer (NSCLC). The PD-1 inhibitor nivolumab has demonstrated meaningful results in terms of efficacy with a good safety profile. The novel approach to treating NSCLC using immunotherapy still has unsolved questions and challenging issues. The main doubts regarding the optimal selection of the patient are the role of this drug in first line of treatment, the individualization of the correct methodology of radiologic assessment and efficacy analysis, the best management of immune-mediated adverse events, and how to overcome the immunoresistance...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27999775/protective-ventilation-improves-gas-exchange-reduces-incidence-of-atelectases-and-affects-metabolic-response-in-major-pancreatoduodenal-surgery
#7
Vsevolod V Kuzkov, Ludmila N Rodionova, Yana Y Ilyina, Aleksey A Ushakov, Maria M Sokolova, Eugenia V Fot, Boris L Duberman, Mikhail Y Kirov
BACKGROUND: Protective perioperative ventilation has been shown to improve outcomes and reduce the incidence of postoperative pulmonary complications. The goal of this study was to assess the effects of ventilation with low tidal volume (VT) either alone or in a combination with moderate permissive hypercapnia in major pancreatoduodenal interventions. MATERIALS AND METHODS: Sixty adult patients scheduled for elective pancreatoduodenal surgery with duration >2 h were enrolled into a prospective single-center study...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27965961/focus-on-alectinib-and-competitor-compounds-for-second-line-therapy-in-alk-rearranged-nsclc
#8
REVIEW
Phu N Tran, Samuel J Klempner
The management of anaplastic lymphoma kinase rearranged (ALK+) non-small cell lung cancer (NSCLC) exemplifies the potential of a precision medicine approach to cancer care. The ALK inhibitor crizotinib has led to improved outcomes in the first- and second-line setting; however, toxicities, intracranial activity, and acquired resistance necessitated the advent of later generation ALK inhibitors. A large portion of acquired resistance to ALK inhibitors is caused by secondary mutations in the ALK kinase domain...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27965960/activation-of-coagulation-and-fibrinolysis-in-acute-respiratory-distress-syndrome-a-prospective-pilot-study
#9
Agnese Ozolina, Marina Sarkele, Olegs Sabelnikovs, Andrejs Skesters, Inta Jaunalksne, Jelena Serova, Talis Ievins, Lars J Bjertnaes, Indulis Vanags
INTRODUCTION: Coagulation and fibrinolysis remain sparsely addressed with regards to acute respiratory distress syndrome (ARDS). We hypothesized that ARDS development might be associated with changes in plasma coagulation and fibrinolysis. Our aim was to investigate the relationships between ARDS diagnosis and plasma concentrations of tissue factor (TF), tissue plasminogen activator (t-PA), and plasminogen activator inhibitor-1 (PAI-1) in mechanically ventilated patients at increased risk of developing ARDS...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27965959/a-novel-antithrombotic-mechanism-mediated-by-the-receptors-of-the-kallikrein-kinin-and-renin-angiotensin-systems
#10
REVIEW
Alvin H Schmaier
The contact activation (CAS) and kallikrein/kinin (KKS) systems regulate thrombosis risk in two ways. First, the CAS influences contact activation-induced factor XI activation and thrombin formation through the hemostatic cascade. Second, prekallikrein (PK) and bradykinin of the KKS regulate expression of three vessel wall G-protein-coupled receptors, the bradykinin B2 receptor (B2R), angiotensin receptor 2, and Mas to influence prostacyclin formation. The degree of intravascular prostacyclin formation inversely regulates intravascular thrombosis risk...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27965958/a-dormant-microbial-component-in-the-development-of-preeclampsia
#11
REVIEW
Douglas B Kell, Louise C Kenny
Preeclampsia (PE) is a complex, multisystem disorder that remains a leading cause of morbidity and mortality in pregnancy. Four main classes of dysregulation accompany PE and are widely considered to contribute to its severity. These are abnormal trophoblast invasion of the placenta, anti-angiogenic responses, oxidative stress, and inflammation. What is lacking, however, is an explanation of how these themselves are caused. We here develop the unifying idea, and the considerable evidence for it, that the originating cause of PE (and of the four classes of dysregulation) is, in fact, microbial infection, that most such microbes are dormant and hence resist detection by conventional (replication-dependent) microbiology, and that by occasional resuscitation and growth it is they that are responsible for all the observable sequelae, including the continuing, chronic inflammation...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27965957/22q11-deletion-syndrome-and-urogenital-manifestations-a-clinicopathological-case-report
#12
M Vachette, G E Grant, J Bouquet de la Joliniere, M Jotterand, N Ben Ali, A Feki, R Capoccia Brugger
BACKGROUND: Deletion in the chromosomal region 22q11 results from the abnormal development of the third and fourth pharyngeal pouches during embryonic life and presents an expansive phenotype with more than 180 clinical features described that involve every organ and system. HISTORY AND SIGNS: A 23-year-old African woman presented for the first trimester echography, which revealed an isolated anechoic structure suggesting a ureteral dilatation. The suspicion of a malposition of great arteries in the second trimester indicated an amniocentesis leading to a diagnosis of 22q11 deletion...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27933295/sperm-chromatin-dispersion-test-before-sperm-preparation-is-predictive-of-clinical-pregnancy-in-cases-of-unexplained-infertility-treated-with-intrauterine-insemination-and-induction-with-clomiphene-citrate
#13
Frank W R C Vandekerckhove, Ilse De Croo, Jan Gerris, Etienne Vanden Abbeel, Petra De Sutter
BACKGROUND/AIMS: A large proportion of men with normal sperm results as analyzed using conventional techniques have fragmented DNA in their spermatozoa. We performed a prospective study to examine the incidence of DNA fragmentation in sperm in cases of couples with previously unexplained infertility and treated with intrauterine insemination. We evaluated whether there was any predictive value of DNA fragmentation for pregnancy outcome in such couples. METHODS: The percentage of DNA fragmentation and all classical variables to evaluate sperm before and after sperm treatment were determined...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27933294/branched-chain-amino-acid-levels-are-related-with-surrogates-of-disturbed-lipid-metabolism-among-older-men
#14
Urho M Kujala, Markku Peltonen, Merja K Laine, Jaakko Kaprio, Olli J Heinonen, Jouko Sundvall, Johan G Eriksson, Antti Jula, Seppo Sarna, Heikki Kainulainen
AIMS/HYPOTHESIS: Existing studies suggest that decreased branched-chain amino acid (BCAA) catabolism and thus elevated levels in blood are associated with metabolic disturbances. Based on such information, we have developed a hypothesis how BCAA degradation mechanistically connects to tricarboxylic acid cycle, intramyocellular lipid storage, and oxidation, thus allowing more efficient mitochondrial energy production from lipids as well as providing better metabolic health. We analyzed whether data from aged Finnish men are in line with our mechanistic hypothesis linking BCAA catabolism and metabolic disturbances...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27921034/crowdsourcing-precision-cerebrovascular-health-imaging-and-cloud-seeding-a-million-brains-initiative%C3%A2
#15
David S Liebeskind
Crowdsourcing, an unorthodox approach in medicine, creates an unusual paradigm to study precision cerebrovascular health, eliminating the relative isolation and non-standardized nature of current imaging data infrastructure, while shifting emphasis to the astounding capacity of big data in the cloud. This perspective envisions the use of imaging data of the brain and vessels to orient and seed A Million Brains Initiative™ that may leapfrog incremental advances in stroke and rapidly provide useful data to the sizable population around the globe prone to the devastating effects of stroke and vascular substrates of dementia...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27921033/new-tools-to-study-contact-activation
#16
Steffen Rosén
The recent availability of a sensitive chromogenic method approach for determination of FXIa activity has been explored for designing sensitive methods for FXIIa and kallikrein, both using FXa formation as the read-out. For both enzymes the assay range 1-10 nmol/L provides a resolution of about 0.8 absorbance units with a total assay time of about 20 min. For studies on activation kinetics, subsampling and extensive dilution can be performed in MES-bovine serum albumin (BSA) buffer pH 5.7 for quenching of enzyme activity and with ensuing determination of FXa generation in a chromogenic FXIa method...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27917383/hakim-adams-syndrome-an-unusual-cause-of-reversible-postoperative-coma
#17
Mohamed Saleh, Marine Bouex
We report the case of a 72-year-old patient presenting in our ICU with persistent postoperative coma in a context of recent unexplored neurological dysfunction. Detailed medical history taking from the patient's family revealed he recently suffered from gait instability, urinary incontinence, and slight cognitive impairment. These constituted the clinical triad of normal pressure hydrocephalus syndrome. The presence of normal cerebrospinal fluid (CSF) pressure and distinctive radiological findings confirmed the diagnosis of normal pressure hydrocephalus or Hakims-Adams syndrome...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27917382/updates-on-the-methodological-approaches-for-carrying-out-an-in-depth-study-of-the-cardiac-conduction-system-and-the-autonomic-nervous-system-of-victims-of-sudden-unexplained-fetal-and-infant-death
#18
Graziella Alfonsi, Marina Crippa
This article contains a set of protocols for histopathological techniques that can be used for carrying out in-depth studies of cases of sudden infant death syndrome and sudden intrauterine unexplained fetal death syndrome. In order to enable researchers to advance hypotheses regarding the causes of the unexpected death of infants and fetuses, the authors propose three innovative and accurate methodologies for studying the cardiac conduction system, the peripheral cardiac nervous system, and the central autonomic nervous system...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27896268/challenges-for-relative-effectiveness-assessment-and-early-access-of-cancer-immunotherapies-in-europe
#19
Mira Pavlovic
Clinical endpoints relevant for relative effectiveness assessment (REA) reflect how patients feel, function, or survive. Outcome data requested by health technology assessment (HTA) bodies in Europe to support reimbursement of an anticancer drug are based on final endpoints coming from completed comparative phase 3 trials; overall survival improvement is the preferred criterion for the demonstration of the patient benefit in this field. Recent arrival of new treatments that target identified functional genetic mutations ("targeted therapies") or PD-1/PD-L1,2 axis ("immunotherapies") and their combinations have profoundly changed treatment strategies in cancers as they considerably improve patient survival, but also raise new challenges in REA and decision-making process in Europe as compared to the REA of "classical" chemotherapies...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27896267/editorial-organ-fibrosis-triggers-pathways-and-cellular-plasticity
#20
EDITORIAL
Henricus A M Mutsaers, Peter Olinga
No abstract text is available yet for this article.
2016: Frontiers in Medicine
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