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https://www.readbyqxmd.com/read/29164819/decellularized-bovine-cotyledons-may-serve-as-biological-scaffolds-with-preserved-vascular-arrangement
#1
Rodrigo da Silva Nunes Barreto, Patricia Romagnolli, Andrea Maria Mess, Maria Angelica Miglino
Technically produced scaffolds are common to establish transplantable tissues for Regenerative Medicine, but also biological ones that are closer to the natural condition become of interest. Placentas are promising, because they represented available, complete organs with rich extracellular matrix (ECM) and well developed vasculature that easily could build anastomoses to a host´s organ. Only placentas from larger animal models such as the bovine meet the dimensions large enough for most organs, but are not adequately described yet...
November 21, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29162436/effect-of-intermedin-adrenomedullin2-on-the-pulmonary-vascular-bed-in-hypoxia-induced-pulmonary-hypertensive-rats
#2
Gokcen Telli, Banu Cahide Tel, Nilgun Yersal, Petek Korkusuz, Bulent Gumusel
AIMS: This study aimed to investigate the effect and mechanism of action of intermedin/adrenomedullin2 (IMD/AM2) on the pulmonary vascular bed in pulmonary hypertensive rats. MATERIALS AND METHODS: Male Sprague-Dawley rats were exposed to hypobaric hypoxia for 3 weeks to induce pulmonary hypertension (PHT). The development of PHT was confirmed by histopathological analyses and measurement of hematocrit, basal perfusion pressure, and right ventricle hypertrophy. Subsequently, the effect of IMD/AM2 in pulmonary hypertensive rats was assessed with both, isolated organ bath and isolated lung perfusion studies...
November 18, 2017: Life Sciences
https://www.readbyqxmd.com/read/29159728/in-lab-manufacturing-of-decellularized-rat-renal-scaffold-for-kidney-bioengineering
#3
Andrea Peloso, Antonio Citro, Valeria Corradetti, Szandra Brambilla, Graziano Oldani, Francesco Calabrese, Tommaso Dominioni, Marcello Maestri, Lorenzo Cobianchi
Whole-organ decellularization is recently gaining interest in the transplantation field as strategy to obtain acellular scaffold only composed by extracellular matrix. These structures, that still remain organ-specific in terms of biological cues and tridimensional morphology could be then recellularized with patient's autologous cells. The final result should be a nwe transplantable autologous organ that should by-pass, at the same time, the problem of organ shortage and secondly the consequences related to the immunosuppression need...
November 21, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29158250/increased-liver-fatty-acid-uptake-is-partly-reversed-and-liver-fat-content-normalized-after-bariatric-surgery
#4
Heidi Immonen, Jarna C Hannukainen, Nobuyuki Kudomi, Jussi Pihlajamäki, Virva Saunavaara, Jukka Laine, Paulina Salminen, Terho Lehtimäki, Tam Pham, Patricia Iozzo, Pirjo Nuutila
OBJECTIVE: Changes in liver fatty acid metabolism are important in understanding the mechanisms of diabetes remission and metabolic changes after bariatric surgery. RESEARCH DESIGN AND METHODS: Liver fatty acid uptake (LFU), blood flow, and fat content (LFC) were measured in 25 obese subjects before bariatric surgery and 6 months after using positron emission tomography/computed tomography and MRS; 14 lean individuals served as the control subjects. RESULTS: The increased LFU in obese subjects was associated with body adiposity...
November 20, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29155815/allopurinol-attenuates-acute-kidney-injury-following-bothrops-jararaca-envenomation
#5
Pedro Henrique França Gois, Monique Silva Martines, Daniela Ferreira, Rildo Volpini, Daniele Canale, Ceila Malaque, Renato Crajoinas, Adriana Castello Costa Girardi, Maria Heloisa Massola Shimizu, Antonio Carlos Seguro
Snakebites have been recognized as a neglected public health problem in several tropical and subtropical countries. Bothrops snakebites frequently complicate with acute kidney injury (AKI) with relevant morbidity and mortality. To date, the only treatment available for Bothrops envenomation is the intravenous administration of antivenom despite its several limitations. Therefore, the study of novel therapies in Bothrops envenomation is compelling. The aim of this study was to evaluate the protective effect of Allopurinol (Allo) in an experimental model of Bothrops jararaca venom (BJ)-associated AKI...
November 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29155020/the-uk-dcd-risk-score-a-new-proposal-to-define-futility-in-donation-after-circulatory-death-liver-transplantation
#6
Andrea Schlegel, Marit Kalisvaart, Irene Scalera, Richard W Laing, Hynek Mergental, Darius F Mirza, Thamara Perera, John Isaac, Philipp Dutkowski, Paolo Muiesan
OBJECTIVES: To design a new score on risk assessment in liver transplantation donated after circulatory death (DCD) based on donor and recipient parameters. BACKGROUND: Primary-non-function (PNF) and ischemic cholangiopathy (IC) are the most feared complications following DCD liver transplantation. METHODS: Using the United Kingdom (UK) national DCD database, a risk analysis was performed in adult recipients of DCD liver grafts in UK between 2000 and 2015 (n=1153)...
November 15, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29153568/maternal-obesity-and-cardiac-development-in-the-offspring-study-in-human-neonates-and-minipigs
#7
Maria Angela Guzzardi, Tiziana Liistro, Luna Gargani, Lamia Ait Ali, Gennaro D'Angelo, Silvia Rocchiccioli, Federica La Rosa, Alessandra Kemeny, Elena Sanguinetti, Nadia Ucciferri, Mariarosaria De Simone, Antonietta Bartoli, Pierluigi Festa, Piero A Salvadori, Silvia Burchielli, Rosa Sicari, Patricia Iozzo
OBJECTIVES: The aim of this study was to investigate the consequences of maternal overweight on cardiac development in offspring in infants (short term) and minipigs (short and longer term). BACKGROUND: The epidemic of overweight involves pregnant women. The uterine environment affects organ development, modulating disease susceptibility. Offspring of obese mothers have higher rates of cardiovascular events and mortality. METHODS: Echocardiography was performed in infants born to lean and overweight mothers at birth and at 3, 6, and 12 months of age...
November 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29152709/perioperative-gastrointestinal-problems-in-the-icu
#8
Annika Reintam Blaser, Joel Starkopf, Pieter-Jan Moonen, Manu L N G Malbrain, Heleen M Oudemans-van Straaten
Gastrointestinal (GI) problems after surgery are common and are not limited to patients undergoing abdominal surgery. GI function is complicated to monitor and is not included in organ dysfunction scores widely used in the ICUs. In most cases, it recovers after surgery, if systemic and local inflammation and perfusion improve, gut oedema resolves, and analgosedation is reduced. However, perioperative GI problems may have severe consequences and increase the risk of death if not recognized and managed in a timely manner...
November 20, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/29145724/abdominal-organ-protection-distal-perfusion-during-replacement-of-the-ascending-aorta-and-aortic-arch
#9
Satoshi Miyamoto, Shinya Takahashi, Shigeyuki Okahara, Hidenobu Takahashi, Keijiro Katayama, Masazumi Watanabe, Takahiro Taguchi, Tatsuya Kurosaki, Bagus Herlambang, Taijiro Sueda
No abstract text is available yet for this article.
November 16, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29142747/clinical-characteristics-of-critically-ill-cancer-patients-who-are-undergoing-isolated-limb-perfusion
#10
Silvio A Ñamendys-Silva, Arturo M Ruiz-Beltran, Mireya Barragán-Dessavre, Andoreni R Bautista-Ocampo, Abelardo Meneses-García, Octavio González-Chon, Angel Herrera-Gómez
The aim of the present study was to investigate the incidence of organ dysfunction, and to describe the clinical characteristics and intensive care unit (ICU) outcomes of critically ill cancer patients who were admitted to an oncological ICU during the isolated limb perfusion post-operative period. The present study was an observational investigation of 42 critically ill cancer patients who were admitted to the ICU of the Instituto Nacional de Cancerología, during the isolated limb perfusion post-operative period, between July 2010 and February 2016...
November 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29140963/when-the-momentum-has-gone-what-will-be-the-role-of-extracorporeal-lung-support-in-the-future
#11
Darryl Abrams, Matthew Bacchetta, Daniel Brodie
PURPOSE OF REVIEW: There has been expanding interest in and use of extracorporeal support in respiratory failure concurrent with technological advances and predominantly observational data demonstrating improved outcomes. However, until there is more available data from rigorous, high-quality randomized studies, the future of extracorporeal support remains uncertain. RECENT FINDINGS: Outcomes for patients supported with extracorporeal devices continue to show favorable trends...
November 14, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/29140316/hybrid-system-for-in-vivo-epifluorescence-and-4d-optoacoustic-imaging
#12
Zhenyue Chen, Xosé Luis Deán-Ben, Sven Gottschalk, Daniel Razansky
Epifluorescence imaging is widely used in cell and molecular biology due to its excellent sensitivity, contrast, and ease of implementation. Optoacoustic imaging has been shown to deliver a highly complementary and unique set of capabilities for biological discovery, such as high spatial resolution in noninvasive deep tissue observations, fast volumetric imaging capacity, and spectrally enriched contrast. In this Letter, we report on a hybrid system combining planar fluorescence and real-time volumetric four-dimensional optoacoustic imaging by means of a fiberscope integrated within a handheld hemispherical ultrasound detection array...
November 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29138563/squarticles-as-the-nanoantidotes-to-sequester-the-overdosed-antidepressant-for-detoxification
#13
Chun-Han Chen, Tse-Hung Huang, Ahmed O Elzoghby, Pei-Wen Wang, Chia-Wen Chang, Jia-You Fang
The increasing death rate caused by drug overdose points to an urgent demand for the development of novel detoxification therapy. In an attempt to detoxify tricyclic antidepressant overdose, we prepared a lipid nanoemulsion, called squarticles, as the nanoantidote. Squalene was the major lipid matrix of the squarticles. Here, we present the animal study to investigate both the pharmacokinetic and pharmacodynamic effects of squarticles on amitriptyline intoxication. The anionic and cationic squarticles had average diameters of 97 and 122 nm, respectively...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29137368/the-protective-effects-of-carboxyhemoglobin-during-the-resuscitation-from-hemorrhagic-shock-in-rats
#14
Hongyu Liu, Songyan Yu, Yaojun Peng, Xin Chang, Xinguang Yu
Aim: This study was aimed to explore the effects of carboxyhemoglobin on reperfusion injury in hemorrhagic shock, as well as its action time and related mechanisms. Results: CO-RBC group showed milder oxidative injury than O2-RBC group. CO reperfusion did not show advantages in functions of kidney and lung during resuscitation. The level of Bax was decreased in CO-RBC group, especially in early CO-RBC group. Moreover, the autophay-related gene Beclin-1 was down-regulated in CO-RBC and early CO-RBC groups...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137180/metabolomic-modularity-analysis-mma-to-quantify-human-liver-perfusion-dynamics
#15
Gautham Vivek Sridharan, Bote Bruinsma, Shyam Sundhar Bale, Anandh Swaminathan, Nima Saeidi, Martin L Yarmush, Korkut Uygun
Large-scale -omics data are now ubiquitously utilized to capture and interpret global responses to perturbations in biological systems, such as the impact of disease states on cells, tissues, and whole organs. Metabolomics data, in particular, are difficult to interpret for providing physiological insight because predefined biochemical pathways used for analysis are inherently biased and fail to capture more complex network interactions that span multiple canonical pathways. In this study, we introduce a nov-el approach coined Metabolomic Modularity Analysis (MMA) as a graph-based algorithm to systematically identify metabolic modules of reactions enriched with metabolites flagged to be statistically significant...
November 13, 2017: Metabolites
https://www.readbyqxmd.com/read/29136348/outcomes-of-donation-after-circulatory-death-kidneys-undergoing-hypothermic-machine-perfusion-following-static-cold-storage-a-uk-population-based-cohort-study
#16
Kamlesh Patel, Jay Nath, James Hodson, Nick Inston, Andrew Ready
Evidence is currently lacking regarding the outcomes of kidneys undergoing Hypothermic Machine Perfusion (HMP) in the UK. Using the National Health Service Blood and Transplant database, the authors compared outcomes for recipients of single organ Donation after Circulatory Death (DCD) kidneys preserved with HMP to those using only static cold storage (SCS). Between 2007 and 2015, HMP was used in 19.1% (864/4,529) of kidneys. Rates of delayed graft function (DGF) were significantly lower in organs preserved with HMP than for SCS (34...
November 14, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29132583/the-evolving-science-of-trauma-resuscitation
#17
REVIEW
Tim Harris, Ross Davenport, Matthew Mak, Karim Brohi
This review summarizes the evolution of trauma resuscitation from a one-size-fits-all approach to one tailored to patient physiology. The most dramatic change is in the management of actively bleeding patients, with a balanced blood product-based resuscitation approach (avoiding crystalloids) and surgery focused on hemorrhage control, not definitive care. When hemostasis has been achieved, definitive resuscitation to restore organ perfusion is initiated. This approach is associated with decreased mortality, reduced duration of stay, improved coagulation profile, and reduced crystalloid/vasopressor use...
February 2018: Emergency Medicine Clinics of North America
https://www.readbyqxmd.com/read/29132513/sepsis-and-septic-shock-strategies
#18
REVIEW
Bracken A Armstrong, Richard D Betzold, Addison K May
Three therapeutic principles most substantially improve organ dysfunction and survival in sepsis: early, appropriate antimicrobial therapy; restoration of adequate cellular perfusion; timely source control. The new definitions of sepsis and septic shock reflect the inadequate sensitivity, specify, and lack of prognostication of systemic inflammatory response syndrome criteria. Sequential (sepsis-related) organ failure assessment more effectively prognosticates in sepsis and critical illness. Inadequate cellular perfusion accelerates injury and reestablishing perfusion limits injury...
December 2017: Surgical Clinics of North America
https://www.readbyqxmd.com/read/29132023/quantification-of-fluorescent-dyes-in-organ-tissue-samples-via-hplc-analysis
#19
S Morsbach, A García-Bardon, J Kamuf, B Müller, N Beghersa, K Mohr, K Landfester
The determination of regional blood flow via the accumulation of fluorescent microspheres is a concept regularly used in medical research. Typically, the microbeads get extracted from the tissue of interest and are then quantified by measuring the absorption or fluorescence of the incorporated dyes without further separation from the medium. However, in that case the absorption spectra of different dyes can overlap when used simultaneously, leading to an overestimation of the concentration. Additionally, background absorption from the medium can be problematic...
November 10, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29129151/false-positive-diagnosis-of-brain-death-following-the-pediatric-guidelines-case-report-and-discussion
#20
D Alan Shewmon
A 2-year-old boy with severe head trauma was diagnosed brain dead according to the 2011 Pediatric Guidelines. Computed tomographic (CT) scan showed massive cerebral edema with herniation. Intracranial pressures were extremely high, with cerebral perfusion pressures around 0 for several hours. An apnea test was initially contraindicated; later, one had to be terminated due to oxygen desaturation when the Pco2 had risen to 57.9 mm Hg. An electroencephalogram (EEG) was probably isoelectric but formally interpreted as equivocal...
December 2017: Journal of Child Neurology
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