scholarly journals Recent developments in the field of vascular liver diseases

2020 ◽  
Vol 40 (S1) ◽  
pp. 142-148
Author(s):  
Dominique C. Valla
Keyword(s):  
Liver Diseases ◽  
Recent Developments

scholarly journals Cell-Based Regeneration and Treatment of Liver Diseases

2021 ◽  
Vol 22 (19) ◽  
pp. 10276
Author(s):  
Julia Hofmann ◽  
Verena Hackl ◽  
Hannah Esser ◽  
Andras T. Meszaros ◽  
Margot Fodor ◽  
...  
Keyword(s):  
Liver Diseases ◽  
Ex Vivo ◽  
Organ Shortage ◽  
Clinical Implementation ◽  
Organ Function ◽  
Novel Technologies ◽  
Recent Developments ◽  
Underlying Mechanisms ◽  
The Moment ◽  
End Stage

The liver, in combination with a functional biliary system, is responsible for maintaining a great number of vital body functions. However, acute and chronic liver diseases may lead to irreversible liver damage and, ultimately, liver failure. At the moment, the best curative option for patients suffering from end-stage liver disease is liver transplantation. However, the number of donor livers required by far surpasses the supply, leading to a significant organ shortage. Cellular therapies play an increasing role in the restoration of organ function and can be integrated into organ transplantation protocols. Different types and sources of stem cells are considered for this purpose, but highly specific immune cells are also the focus of attention when developing individualized therapies. In-depth knowledge of the underlying mechanisms governing cell differentiation and engraftment is crucial for clinical implementation. Additionally, novel technologies such as ex vivo machine perfusion and recent developments in tissue engineering may hold promising potential for the implementation of cell-based therapies to restore proper organ function.

scholarly journals Multiparametric MR mapping in clinical decision-making for diffuse liver disease

2020 ◽  
Vol 45 (11) ◽  
pp. 3507-3522 ◽  
Author(s):  
Helena B. Thomaides-Brears ◽  
Rita Lepe ◽  
Rajarshi Banerjee ◽  
Carlos Duncker
Keyword(s):  
Liver Disease ◽  
Liver Diseases ◽  
Clinical Decision Making ◽  
Clinical Care ◽  
Clinical Decision ◽  
Chronic Liver ◽  
Diffuse Liver Disease ◽  
Treatment Pathway ◽  
Recent Developments ◽  
Potential Applications

Abstract Accurate diagnosis, monitoring and treatment decisions in patients with chronic liver disease currently rely on biopsy as the diagnostic gold standard, and this has constrained early detection and management of diseases that are both varied and can be concurrent. Recent developments in multiparametric magnetic resonance imaging (mpMRI) suggest real potential to bridge the diagnostic gap between non-specific blood-based biomarkers and invasive and variable histological diagnosis. This has implications for the clinical care and treatment pathway in a number of chronic liver diseases, such as haemochromatosis, steatohepatitis and autoimmune or viral hepatitis. Here we review the relevant MRI techniques in clinical use and their limitations and describe recent potential applications in various liver diseases. We exemplify case studies that highlight how these techniques can improve clinical practice. These techniques could allow clinicians to increase their arsenals available to utilise on patients and direct appropriate treatments.

scholarly journals Enhanced Liver Fibrosis (ELF) Immunoassay Test for Identification of Significant Liver Diseases: Recent Developments

2015 ◽  
Vol 6 (1) ◽  
pp. 38-41
Author(s):  
Rubayat Sheik Giasuddin ◽  
Mobin Khan ◽  
ASM Giasuddin ◽  
Md Mahmudur Rahman Siddiqui
Keyword(s):  
Clinical Practice ◽  
Liver Disease ◽  
Liver Fibrosis ◽  
Needle Biopsy ◽  
Liver Diseases ◽  
Reference Standard ◽  
Prognostic Tool ◽  
Medical College ◽  
Blood Tests ◽  
Recent Developments

Liver Fibrosis (LF) is a common outcome in chronic liver disease (CLD). Over a period of time, the process results in cirrhosis leading to disruption in functional capacity of liver. Further serious complications may occur including portal hypertension, liver failure and cancer. The magnitude of CLD has increased being recognized as a major cause for morbidity and mortality globally and it is increasing progressively in Bangladesh also. Question arises "Is the transabdominal needle biopsy of liver, the traditional reference standard method, sufficient and efficient enough for detecting and assessing liver fibrosis particularly in the early stages of significant liver disease?" More simpler, convenient and less expensive blood tests such as 'Enhanced Liver Fibrosis (ELF) immunoassay test', Fibrotest and Aspartate transaminase-platelet ratio index (APRI), have been developed and reported for identification of significant CLD and use as prognostic tool in clinical practice. Among them, the ELF test had been found to be statistically the best for diagnosing and predicting clinical outcomes in patients with CLD and may be a useful prognostic tool in clinical practice. This ELF immunoassay test has been briefly reviewed in this article. Short title: ELF immunoassay test for CLDAnwer Khan Modern Medical College Journal Vol. 6, No. 1: January 2015, Pages 38-41

scholarly journals Recent Developments in the Synthesis of β-Diketones

2021 ◽  
Vol 14 (10) ◽  
pp. 1043
Author(s):  
Gonzalo de Gonzalo ◽  
Andrés R. Alcántara
Keyword(s):  
Chemical Synthesis ◽  
Neurological Disorders ◽  
Liver Diseases ◽  
Skin Diseases ◽  
Pharmaceutically Active Compounds ◽  
Huge Number ◽  
Decarboxylative Coupling ◽  
Recent Developments ◽  
Enol Tautomer ◽  
Valuable Compounds

Apart from being one of the most important intermediates in chemical synthesis, broadly used in the formation of C–C bonds among other processes, the β-dicarbonyl structure is present in a huge number of biologically and pharmaceutically active compounds. In fact, mainly derived from the well-known antioxidant capability associated with the corresponding enol tautomer, β-diketones are valuable compounds in the treatment of many pathological disorders, such as cardiovascular and liver diseases, hypertension, obesity, diabetes, neurological disorders, inflammation, skin diseases, fibrosis, or arthritis; therefore, the synthesis of these structures is an area of overwhelming interest for organic chemists. This paper is devoted to the advances achieved in the last ten years for the preparation of 1,3-diketones, using different chemical (Claisen, hydration of alkynones, decarboxylative coupling) or catalytic (biocatalysis, organocatalytic, metal-based catalysis) methodologies: Additionally, the preparation of branched β-dicarbonyl compounds by means of α-functionalization of non-substituted 1,3-diketones are also discussed.

scholarly journals Role of Autophagy in Cadmium-Induced Hepatotoxicity and Liver Diseases

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Suryakant Niture ◽  
Minghui Lin ◽  
Qi Qi ◽  
John T. Moore ◽  
Keith E. Levine ◽  
...  
Keyword(s):  
Liver Diseases ◽  
Pulmonary Toxicity ◽  
Molecular Level ◽  
Lysosomal Degradation ◽  
Cell Organelles ◽  
Air Contamination ◽  
Recent Developments ◽  
Toxic Pollutant ◽  
Catabolic Process

Cadmium (Cd) is a toxic pollutant that is associated with several severe human diseases. Cd can be easily absorbed in significant quantities from air contamination/industrial pollution, cigarette smoke, food, and water and primarily affects the liver, kidney, and lungs. Toxic effects of Cd include hepatotoxicity, nephrotoxicity, pulmonary toxicity, and the development of various human cancers. Cd is also involved in the development and progression of fatty liver diseases and hepatocellular carcinoma. Cd affects liver function via modulation of cell survival/proliferation, differentiation, and apoptosis. Moreover, Cd dysregulates hepatic autophagy, an endogenous catabolic process that detoxifies damaged cell organelles or dysfunctional cytosolic proteins through vacuole-mediated sequestration and lysosomal degradation. In this article, we review recent developments and findings regarding the role of Cd in the modulation of hepatotoxicity, autophagic function, and liver diseases at the molecular level.

Trends in Electron Energy Loss Spectroscopy

1977 ◽  
Vol 35 ◽  
pp. 228-229
Author(s):  
C. Colliex ◽  
P. Trebbia
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Materials Science ◽  
Analytical Technique ◽  
Recent Developments ◽  
Quantitative Results ◽  
Electron Microscopes ◽  
Electron Energy Loss ◽  
Primary Electrons

The physical foundations for the use of electron energy loss spectroscopy towards analytical purposes, seem now rather well established and have been extensively discussed through recent publications. In this brief review we intend only to mention most recent developments in this field, which became available to our knowledge. We derive also some lines of discussion to define more clearly the limits of this analytical technique in materials science problems.The spectral information carried in both low ( 0<ΔE<100eV ) and high ( >100eV ) energy regions of the loss spectrum, is capable to provide quantitative results. Spectrometers have therefore been designed to work with all kinds of electron microscopes and to cover large energy ranges for the detection of inelastically scattered electrons (for instance the L-edge of molybdenum at 2500eV has been measured by van Zuylen with primary electrons of 80 kV). It is rather easy to fix a post-specimen magnetic optics on a STEM, but Crewe has recently underlined that great care should be devoted to optimize the collecting power and the energy resolution of the whole system.

Filaments and membranes in the mitotic apparatus

1983 ◽  
Vol 41 ◽  
pp. 544-547
Author(s):  
Kent McDonald
Keyword(s):  
Intermediate Filaments ◽  
Mitotic Spindle ◽  
Mitotic Apparatus ◽  
Light Microscope Level ◽  
Microtubule Associated Proteins ◽  
Recent Developments ◽  
Associated Proteins ◽  
Force Generator ◽  
Spindle Function ◽  
Antibody Technology

At the light microscope level the recent developments and interest in antibody technology have permitted the localization of certain non-microtubule proteins within the mitotic spindle, e.g., calmodulin, actin, intermediate filaments, protein kinases and various microtubule associated proteins. Also, the use of fluorescent probes like chlorotetracycline suggest the presence of membranes in the spindle. Localization of non-microtubule structures in the spindle at the EM level has been less rewarding. Some mitosis researchers, e.g., Rarer, have maintained that actin is involved in mitosis movements though the bulk of evidence argues against this interpretation. Others suggest that a microtrabecular network such as found in chromatophore granule movement might be a possible force generator but there is little evidence for or against this view. At the level of regulation of spindle function, Harris and more recently Hepler have argued for the importance of studying spindle membranes. Hepler also believes that membranes might play a structural or mechanical role in moving chromosomes.

Software pattern recognition applied to nanodiffraction patterns from a STEM instrument

1986 ◽  
Vol 44 ◽  
pp. 694-695
Author(s):  
G.Y. Fan ◽  
J.M. Cowley
Keyword(s):  
Image Processing ◽  
Pattern Recognition ◽  
Computer Software ◽  
Processing System ◽  
Light Level ◽  
Host Computer ◽  
Low Light ◽  
Image Processing System ◽  
Recent Developments ◽  
On Line

In recent developments, the ASU HB5 has been modified so that the timing, positioning, and scanning of the finely focused electron probe can be entirely controlled by a host computer. This made the asynchronized handshake possible between the HB5 STEM and the image processing system which consists of host computer (PDP 11/34), DeAnza image processor (IP 5000) which is interfaced with a low-light level TV camera, array processor (AP 400) and various peripheral devices. This greatly facilitates the pattern recognition technique initiated by Monosmith and Cowley. Software called NANHB5 is under development which, instead of employing a set of photo-diodes to detect strong spots on a TV screen, uses various software techniques including on-line fast Fourier transform (FFT) to recognize patterns of greater complexity, taking advantage of the sophistication of our image processing system and the flexibility of computer software.

High-resolution microscopy of twin boundaries in gold

1987 ◽  
Vol 45 ◽  
pp. 260-261
Author(s):  
William Krakow ◽  
David A. Smith
Keyword(s):  
High Resolution ◽  
Specimen Preparation ◽  
Gold Films ◽  
Boundary Area ◽  
Transmission Electron ◽  
Recent Developments ◽  
Tilt Boundaries ◽  
High Resolution Microscopy ◽  
Twist Boundaries

Recent developments in specimen preparation, imaging and image analysis together permit the experimental determination of the atomic structure of certain, simple grain boundaries in metals such as gold. Single crystal, ∼125Å thick, (110) oriented gold films are vapor deposited onto ∼3000Å of epitaxial silver on (110) oriented cut and polished rock salt substrates. Bicrystal gold films are then made by first removing the silver coated substrate and placing in contact two suitably misoriented pieces of the gold film on a gold grid. Controlled heating in a hot stage first produces twist boundaries which then migrate, so reducing the grain boundary area, to give mixed boundaries and finally tilt boundaries perpendicular to the foil. These specimens are well suited to investigation by high resolution transmission electron microscopy.

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