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https://www.readbyqxmd.com/read/29786833/assessment-of-cerebral-perfusion-and-edema-in-preeclampsia-with-intravoxel-incoherent-motion-mri
#1
Maria Nelander, Daniel Hannsberger, Inger Sundström-Poromaa, Lina Bergman, Jan Weis, Helena Åkerud, Johan Wikström, Anna-Karin Wikström
INTRODUCTION: Cerebral complications are the main reasons for morbidity and mortality in preeclampsia and eclampsia. Still we do not know if the pathophysiology entails hypo- or hyperperfusion of the brain, or how and when edema emerges, due to the difficulty to examine the cerebral circulation. MATERIAL AND METHODS: We have used a non-invasive diffusion weighted magnetic resonance imaging (MRI) technique, intravoxel incoherent motion, to study cerebral perfusion on the capillary level and cerebral edema in women with preeclampsia (n=30), normal pregnancy (n=32) and non-pregnant women (n=16)...
May 22, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29786607/pre-set-extrusion-bioprinting-for-multiscale-heterogeneous-tissue-structure-fabrication
#2
Donggu Kang, Geunseon Ahn, Donghwan Kim, Hyun-Wook Kang, Seokhwan Yun, Won-Soo Yun, Jin-Hyung Shim, Songwan Jin
Recent advances in three-dimensional (3D) bioprinting technology have led to various attempts in fabricating human tissue-like structures. However, current bioprinting technologies have limitations for creating native tissue-like structures. To resolve these issues, we developed a new pre-set extrusion bioprinting technique that can create heterogeneous, multicellular, and multimaterial structures simultaneously. The key to this ability lies in the use of a precursor cartridge that can stably preserve a multimaterial with a pre-defined configuration that can be simply embedded in a syringe-based printer head...
May 22, 2018: Biofabrication
https://www.readbyqxmd.com/read/29786599/-a-complex-clinical-case-of-polyarteritis-nodosa-through-the-prism-of-kidneys
#3
Tetyana I Yarmola, Tetyana B Bevzenko, Lydia A Tkachenko, Victoria V Talas, Anna L Pustovoyt
Polyarteritis nodosa is a chronic systemic vasculitis, characterized by the autoimmune, necrotising lesion of the walls of the small- and medium-bore visceral and peripheral arteries, resulting in vessel aneurysms and the secondary degeneration of organs and systems. All types of vessels (arteries, veins, capillaries) can be affected or, alternatively, the process can be limited predominantly to the vessels of one system, the clinical symptoms depending on the bore and location of the affected vessels. Varying degrees of the lesion, varying combinations and sequencing, the compensation abilities of the vessel disorders can blur the clinical picture, even though early pathomorphological changes are quite pronounced...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29786576/the-histological-and-electron-microscopic-study-of-the-parotid-salivary-gland-in-dehydrated-rats-of-different-ages
#4
Denys P Biletskyy, Oleg A Ustiansky, Olena S Maksymova, Pavel A Moskalenko, Alexey A Tymoshenko, Anna S Degtyarenko, Viktoriia Yu Harbuzova, Yevhen I Dubovyk, Andrii P Voznyi, Gennadii F Tkach
OBJECTIVE: Introduction: Water-salt metabolism disorders is one of the main factor of salivary gland pathology development. The aim: To study the morphological structure of the parotid salivary gland of young, mature and old rats at micro- and ultrastructural levels under water deprivation. PATIENTS AND METHODS: Materials and methods: The experiment was carried out on thirty six laboratory male rats of different ages (young, mature and old). The rats of the control group received normal volume of drinking water...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29786124/evaluation-of-the-relationship-between-flap-tension-and-tissue-perfusion-in-implant-based-breast-reconstruction-using-laser-assisted-indocyanine-green-angiography
#5
Chae-Eun Yang, Soon Won Chung, Dong Won Lee, Dae Hyun Lew, Seung Yong Song
BACKGROUND: For implant-based breast reconstruction, inadequate tissue perfusion may cause devastating complications. Tissue tension by inadequate implant volume may reduce tissue perfusion by stretching and collapsing the capillaries. The SPY system is used to perform intraoperative fluorescence angiography with indocyanine green to assess visually the blood flow and evaluate tissue perfusion. However, there is no report yet about how mastectomy flap perfusion changes with the expander-filling volume...
May 21, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29786010/commentary-comparison-of-optical-coherence-tomography-angiography-and-fundus-fluorescein-angiography-features-of-retinal-capillary-hemangioblastoma
#6
Vikas Khetan, Mukesh Jain
No abstract text is available yet for this article.
June 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29786009/comparison-of-optical-coherence-tomography-angiography-and-fundus-fluorescein-angiography-features-of-retinal-capillary-hemangioblastoma
#7
Pradeep Sagar, R Rajesh, Mahesh Shanmugam, Vinaya Kumar Konana, Divyansh Mishra
The aim of this study is to compare the optical coherence tomography angiography (OCTA) and fundus fluorescein angiography (FFA) features of retinal capillary hemangioblastoma (RCH). This is an observational case series of three patients with von Hippel-Lindau (VHL) disease and one patient with juxtapapillary RCH. All patients underwent FFA with a mydriatic fundus camera and OCTA with swept-source angio OCT. The FFA and OCTA characteristics of tumors were compared. In our series, FFA could identify tumors as small as the width of a third-order retinal artery, which was missed on clinical examination...
June 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29785728/ultrafast-capillary-electrophoresis-method-for-the-simultaneous-determination-of-ammonium-and-diphenhydramine-in-pharmaceutical-samples
#8
Brenda M C Costa, Mariana C Marra, Thiago C Oliveira, Rodrigo A A Munoz, Alex D Batista, Claudimir L do Lago, Eduardo M Richter
Ammonium and diphenhydramine are active ingredients commonly found in the same pharmaceutical preparations. We report for the first time a sub-minute method for the simultaneous determination of ammonium and diphenhydramine. The method is based on capillary electrophoresis with capacitively coupled contactless conductivity detection. Both analytes can be quantified in a single run (∼80 injections h-1 ) using 30 mmol L-1 2-(N-morpholino)ethanesulfonic acid and 15 mmol L-1 lithium hydroxide (pH = 6.0) as a background electrolyte...
May 22, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29785490/microcirculatory-effects-of-sildenafil-in-experimental-testicular-torsion-in-rats
#9
Márton Oroszi, Andrea Szabó, Ádám Miklós Fehér, Gábor Deák, Zoltán Bajory
PURPOSE: Investigate the short-term effect of sildenafil on microcirculation, especially the velocity, the pattern of the flow and the recruitment of the leukocyte in postcapillaries. METHODS: In male Sprague-Dawley rats, the microcirculatory consequences of 60 min experimental testicular torsion, followed by 240 min of reperfusion, were examined. Using fluorescence intravital microscopy, changes in red blood cell velocity in post-capillary venules and rolling as well as adhesion of leukocytes in the postcapillary venules were examined before the torsion and every hour during the reperfusion period...
May 21, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29784424/sensitive-determination-of-seven-triazine-herbicide-in-honey-tomato-and-environmental-water-samples-by-hollow-fiber-based-liquid-liquid-liquid-microextraction-combined-with-sweeping-micellar-electrokinetic-capillary-chromatography
#10
Qing Yang, Beibei Chen, Man He, Bin Hu
A rapid, simple, and effective method has been developed for the determination of seven triazine herbicides (terbutryn, prometryn, ametryn, prometon, propazine, atrazine, simazine) by coupling off-line hollow fiber liquid liquid liquid microextraction (HF-LLLME) with on-line sweeping micellar electrokinetic chromatography (sweeping-MEKC). In HF-LLLME, seven target triazines in hydrophobic form were extracted from the sample solution into decane impregnated in the pores of the hollow fiber, and then back-extracted into 1 mol L-1 H3 PO4 inside the hollow fiber lumen...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29784386/fabrication-of-powdery-polymer-aerogel-as-the-stationary-phase-for-high-resolution-gas-chromatographic-separation
#11
Juan Zheng, Cuiming Lu, Junlong Huang, Luyi Chen, Chuyi Ni, Xintong Xie, Fang Zhu, Dingcai Wu, Gangfeng Ouyang
Novel powdery polymer aerogel (PPA) prepared via the (micro)emulsion polymerization and the following hyper crosslinking reaction was fabricated as stationary phase of capillary column for the first time. Due to its powdery morphology, unique 3D nano-network structure, high surface area and good thermostability, the PPA-coated capillary column demonstrated high-resolution chromatographic separation towards nonpolar and weakly polar organic compounds, including benzene series, n-alkanes, ketone mixtures and trichlorobenzenes...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29784352/application-of-gradient-ratio-flow-injection-technique-to-implementation-of-the-chemical-h-point-standard-addition-method
#12
Marcin Wieczorek, Marek Dębosz, Paweł Świt, Aneta Woźniakiewicz, Paweł Kościelniak
A new gradient ratio approach to Chemical H-point Standard Addition Method (C-HPSAM) was developed in flow injection analysis with spectrophotometric detection. C-HPSAM is based on an idea to use SAM for calibration in several different chemical conditions in order to correct unspecific (additive) interferences in samples with unknown matrix. The approach proposed in this paper employs the gradient ratio flow-injection technique to generate a continuous change of chemical conditions. By doing so a set of two-point SAM calibration curves with different slopes are possible of registering that are intersected in a common point indicating the values of both unspecific interferences and analyte concentration in a sample...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29784342/rapid-and-sensitive-detection-of-staphylococcus-aureus-assisted-by-polydopamine-modified-magnetic-nanoparticles
#13
Xiaomei Gao, Xin Yao, Zitao Zhong, Li Jia
Pathogens cause significant morbidity and mortality to humans. Thus, development of fast and reliable methods for detection and identification of pathogens is urgently needed to increase protection level of public health and ensure the safety of consumers. Herein, a rapid and sensitive method has been developed for Staphylococcus aureus (S. aureus) detection based on the dual role of polydopamine modified magnetic nanoparticles (PDA@Fe3 O4 NPs) combined with polymerase chain reaction (PCR) and capillary electrophoresis (CE)...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29784340/quantitative-study-of-the-mineralogical-composition-of-mineral-dust-aerosols-by-x-ray-diffraction
#14
Sophie Nowak, Sandra Lafon, Sandrine Caquineau, Emilie Journet, Benoit Laurent
Mineral dust aerosols, produced by wind erosion in arid regions and semi-arid surfaces, are important components of the atmosphere that affect the Earth radiative budget, atmospheric chemistry and biogeochemical cycles. Dust aerosol particles are composed of a complex mixture of various minerals, mainly clays, calcite, quartz, feldspars and iron oxides. The nature and the relative abundance of the minerals are key parameters to evaluate mineral dust environmental impacts. Strong limitations remain to quantify the mineralogical composition of dust particles, mainly due to the low mass of in-situ collected dust particle samples...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29784153/perifoveal-capillary-network-quantification-in-young-diabetic-patients-with-subclinical-or-no-retinopathy
#15
Zoi Kapsala, Aristofanis Pallikaris, Dimitrios Mamoulakis, Joanna Moschandreas, Georgios Bontzos, Miltiadis Tsilimbaris
OBJECTIVE: To assess the morphology of perifoveal capillary network with quantitative parameters in young patients with diabetes mellitus type I (DM I) using an algorithm. METHODS: Fifty-three images (33 eyes of 33 DM I patients and 20 eyes of 20 non-DM controls) were chosen retrospectively from the University Hospital of Heraklion digital fluorescein angiography database. An additional group consisting of patients with advanced DR abnormalities was included in our analysis to investigate whether our method detects alterations when they are present...
June 2018: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/29782435/biobehavioral-responses-of-preterm-infants-to-conventional-and-swaddled-tub-baths-a-randomized-crossover-trial
#16
Patrícia de Freitas, Mariana Bueno, Diane Holditch-Davis, Hudson Pires Santos, Amélia Fumiko Kimura
Bathing is a routine care procedure that exposes preterm infants to prolonged handling, which could cause stress and potentially disrupt infants' biobehavioral responses. The aim of this double-blind randomized crossover trial was to compare the preterm infant's body temperature, heart rate (HR), peripheral capillary oxygen saturation (SpO2), salivary cortisol levels, and sleep-wake states during and after swaddled and conventional tub baths. Forty-three infants born at 32 to 36 weeks postmenstrual age, weighing 2225 g or less, were enrolled in the study...
May 18, 2018: Journal of Perinatal & Neonatal Nursing
https://www.readbyqxmd.com/read/29782426/nailfold-videocapillaroscopy-changes-are-associated-with-the-presence-and-severity-of-systemic-sclerosis-related-interstitial-lung-disease
#17
Joana Caetano, Filipe S Paula, Marta Amaral, Susana Oliveira, José D Alves
OBJECTIVE: The aim of this study was to evaluate the association of nailfold videocapillaroscopy (NVC) changes with the presence and severity of interstitial lung disease (ILD) in systemic sclerosis. METHODS: This was a cross-sectional analysis of 48 systemic sclerosis patients (21 patients with ILD). The NVC characteristics considered were capillary organization, capillary loss (CL), avascular areas, enlarged and giant capillaries, hemorrhages, abnormally shaped capillaries, edema, and intermittent flux...
May 19, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29782424/the-profile-of-serum-transferrin-isoforms-in-rheumatoid-arthritis
#18
Monika Gudowska, Ewa Gruszewska, Alicja Wrona, Ewa Gindzienska-Sieskiewicz, Izabela Domyslawska, Karina Lipartowska-Klimuk, Bogdan Cylwik, Stanislaw Sierakowski, Lech Chrostek
INTRODUCTION: Transferrin, a microheterogeneous iron-transporting N-glycoprotein, is an optimal model for the analysis of the glycosylation profile in rheumatoid arthritis. The aim of this study was to assess the transferrin isoforms profile in RA patients at the time of diagnosis and then look into the associations with disease activity. METHODS: Serum samples were collected from 48 patients with rheumatoid arthritis. The patients were males (6) and females (42) (age range: 33-85 years)...
May 19, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29782357/reversible-microvascular-hyporeactivity-to-acetylcholine-during-diabetic-ketoacidosis
#19
Jérémie Joffre, Simon Bourcier, Geoffroy Hariri, Arnaud-Felix Miailhe, Naike Bigé, Guillaume Dumas, Vincent Dubée, Pierre-Yves Boelle, Idriss Abdallah, Jean-Luc Baudel, Bertrand Guidet, Eric Maury, Hafid Ait-Oufella
OBJECTIVES: Metabolic acidosis is commonly observed in critically ill patients. Experimental studies suggested that acidosis by itself could impair vascular function, but this has been poorly investigated in human. DESIGN: Prospective observational study. SETTING: Medical ICU in a tertiary teaching hospital. PATIENTS: To assess the relationship between metabolic acidosis severity and microvascular reactivity, we included adult diabetic patients admitted in ICU for ketoacidosis...
May 18, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29782281/-effect-of-chronic-kidney-disease-on-the-formation-of-diastolic-heart-dysfunction-in-heart-failure-patients-with-preserved-ejection-fraction
#20
O B Kuzmin, V V Zezha, V V Belyanin, N V Buchneva
Chronic kidney disease is observed in most patients with CHF with preserved ejection fraction (HFpEF) and presents a major risk factor facilitating development and progression of LV diastolic dysfunction. The review focused on the effect of chronic kidney disease on intracellular signaling pathways affecting stiffness and diastolic relaxation of cardiomyocytes in response to inflammation and endothelial dysfunction of coronary capillaries, excessive sympathetic activation, and dysregulation of natriuretic peptides, which directly participate in the development of CHF...
2018: Kardiologiia
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