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https://www.readbyqxmd.com/read/29776696/single-layer-centrifugation-improves-the-quality-of-frozen-thawed-sperm-of-giant-panda-ailuropoda-melanoleuca
#1
Z G Cai, J H An, Y L Liu, S M Yie, Y Zhang, F P Li, J S Chen, X Wang, J M Morrell, R Hou
The reproductive capacity of captive giant pandas is poor and sperm cryopreservation is necessary for the reproduction and conservation of this species. Cryopreservation, however, leads to a significant decrease in sperm quality, including sperm motility, acrosome integrity and DNA integrity. In the present study, a method was developed based on colloid single layer centrifugation that could significantly improve frozen-thawed sperm quality. Two colloids were compared for post-thaw giant panda sperm preparation; the sperm samples had greater total motility (Colloid 1: 44...
May 15, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29776538/rapid-detection-of-calr-type-1-and-type-2-mutations-using-pna-lna-clamping-loop-mediated-isothermal-amplification-on-a-cd-like-microfluidic-chip
#2
Guojun Cao, Jilie Kong, Zhifang Xing, Yigui Tang, Xinju Zhang, Xiao Xu, Zhihua Kang, Xueen Fang, Ming Guan
Bleeding and thrombosis represent common complications in myeloproliferative neoplasms (MPN) and significantly contribute to morbidity and mortality. Molecular markers, including CALR mutations, were considered not only as diagnostic markers, but also as risk factors for bleeding and thrombosis associated with MPN, especially for patients in remote primary hospitals. We sought to develop an easy-to-use assay for the rapid detection of CALR type 1 (CALR-1) and type 2 (CALR-2) mutations in Philadelphia chromosome-negative MPN patients...
September 18, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29774653/matrix-glycoprotein-interactions-required-for-budding-of-a-plant-nucleorhabdovirus-and-induction-of-inner-nuclear-membrane-invagination
#3
Kai Sun, Xin Zhou, Wenye Lin, Xueping Zhou, Andrew O Jackson, Zhenghe Li
Nucleorhabdoviruses such as Sonchus yellow net virus (SYNV) replicate in the nuclei and undergo morphogenesis at the inner nuclear membrane (IM) in plant cells. Mature particles are presumed to form by budding of the Matrix (M) protein-nucleocapsid complexes through host IMs to acquire host phospholipids and the surface glycoproteins (G). To address mechanisms underlying nucleorhabdovirus budding, we generated recombinant SYNV G mutants containing a truncated amino-terminal (NT) or carboxyl-terminal (CT) domain...
May 18, 2018: Molecular Plant Pathology
https://www.readbyqxmd.com/read/29774592/risk-factors-for-stroke-on-left-ventricular-assist-devices
#4
Muath Bishawi, Jeremy Joseph, Chetan Patel, Jacob Schroder, Mani Daneshmand, Dawn Bowles, Joseph Rogers, Carmelo Milano
BACKGROUND: Patients with end-stage heart failure on left ventricular assist devices (LVADs) are predisposed to a high incidence of stroke. Preoperative factors associated with increased stroke risk are poorly understood. METHODS: We performed a single-center retrospective review of all patients from 2009 to 2014 in whom a rotary flow LVAD was implanted. All patients with symptoms of a cerebrovascular event underwent a non-contrast head computed tomography scan...
May 17, 2018: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/29773470/is-boar-sperm-freezability-more-intrinsically-linked-to-spermatozoa-than-to-the-surrounding-seminal-plasma
#5
Junwei Li, Jordi Roca, Cristina Pérez-Patiño, Isabel Barranco, Emilio A Martinez, Heriberto Rodriguez-Martinez, Inmaculada Parrilla
This study aimed to elucidate the effect of seminal plasma (SP) from post-SRF on boar sperm freezability and, in addition, to determine the relevance of sperm itself to sustain cryopreservation, regardless of the SP surrounding them. Twelve ejaculates from three boars were manually collected in fractions/portions, P1: the first 10 mL of the SRF, P2: the rest of the SRF and the post-SRF. Immediately, samples were centrifuged to separate spermatozoa from the surrounding SP. Spermatozoa from P1 and P2 were then incubated with its own SP or that from post-SRF, diluted in BTS (1:1, v/v) at 17 °C overnight before being frozen in 0...
May 14, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29773195/measuring-zinc-in-biological-nanovesicles-by-multiple-analytical-approaches
#6
Francesco Piacenza, Antje Biesemeier, Marco Farina, Francesco Piva, Xin Jin, Eleonora Pavoni, Lorenzo Nisi, Maurizio Cardelli, Laura Costarelli, Robertina Giacconi, Andrea Basso, Elisa Pierpaoli, Mauro Provinciali, James C M Hwang, Antonio Morini, Andrea di Donato, Marco Malavolta
Exosomes are nanovesicles known to mediate intercellular communication. Although it is established that zinc ions can act as intracellular signaling factors, the measurement of zinc in circulating nanovesicles has not yet been attempted. Providing evidence of the existence of this zinc fraction and methods for its measurement might be important to advance our knowledge of zinc status and its relevance in diseases. Exosomes from 0.5 ml of either fresh or frozen human plasma were isolated by differential centrifugation...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29773182/essential-elements-in-synovial-fluid-samples-obtained-from-patients-living-in-northern-poland
#7
Pawel Konieczynski, Grzegorz Szreder, Ewelina Tamowska, Marek Wesolowski
Many people after 50 year of life suffer pains caused by osteoarthritis (OA), which make their life difficult and painful. There is a probable association of OA with the concentration of certain elements in body fluids. Therefore the aim of the study was to relate the level of essential elements in synovial fluids of patients with OA with the treatment using antiarthritic drugs. Thus, flame-atomic absorption spectrometry was used to determine the concentrations of Fe, Zn, Cu, Mn, Na, K, Ca and Mg in 74 samples of synovial fluids taken from 36 patients...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29772345/autologous-liquid-platelet-rich-fibrin-a-novel-drug-delivery-system
#8
REVIEW
Richard J Miron, Yufeng Zhang
There is currently widespread interest within the biomaterial field to locally deliver biomolecules for bone and cartilage regeneration. Substantial work to date has focused on the potential role of these biomolecules during the healing process, and the carrier system utilized is a key factor in their effectiveness. Platelet rich fibrin (PRF) is a naturally derived fibrin scaffold that is easily obtained from peripheral blood following centrifugation. Slower centrifugation speeds have led to the commercialization of a liquid formulation (liquid-PRF) resulting in an upper plasma layer composed of liquid fibrinogen/thrombin prior to clot formation that remains in its liquid phase for approximately 15 minutes until injected into bodily tissues...
May 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29772043/foveal-avascular-zone-area-analysis-in-macular-hole-before-and-after-surgery-using-optical-coherence-tomography-angiography
#9
Ferdiriva Hamzah, Ari Shinojima, Hiroyuki Nakashizuka, Akiyo Kawamorita, Hiroyuki Shimada
BACKGROUND AND OBJECTIVE: To analyze the foveal avascular zone (FAZ) area in superficial and deep retinal layers in patients with macular hole (MH) before and after surgery. PATIENTS AND METHODS: The authors studied 14 patients with unilateral MH. They examined a 3 mm × 3 mm area at the fovea before and 6 months after surgery using spectral-domain optical coherence tomography angiography. RESULTS: In eyes affected by MH, the mean preoperative superficial FAZ (0...
May 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29771414/extracellular-vesicles-promote-esophageal-cancer-progression-by-delivering-lnczeb1-as1-between-cells
#10
Y-G Zhang, M-W Zhou, L Bai, R-Y Han, K Lv, Z Wang
OBJECTIVE: To explore the expression of extracellular vesicle-derived lncZEB1-AS1 in esophageal cancer and its role in esophageal cancer progression. PATIENTS AND METHODS: The extracellular vesicles (EVs) from esophageal cancer patients (n = 26) and normal subjects (n = 26) were isolated by differential centrifugation. The expression of lncZEB1-AS1 in EVs was detected by Real-time PCR (polymerase chain reaction). The clinical data of normal subjects and patients were analyzed...
May 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29770655/-quantitative-determination-of-biogenic-amine-from-biomphalaria-glabrata-nervous-system-by-uplc-ms-ms
#11
Huang Tao, Guo Yun-Hai, Liu He-Xiang, Zhang Yi
OBJECTIVE: To establish a method for the quantitative determination of serotonin and dopamine in the nervous system of Biomphalaria glabrata by using ultra high performance liquid chromatography-tandem quadrupole mass spectrometry (UPLC MS/MS) . METHODS: The B. glabrata nervous system was broken in the pure methanol solution after obtaining it by dissecting with microscope. Then, the supernatant containing the target substance after twice high speed centrifugation was got...
April 19, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29770426/ab-initio-conformational-analysis-of-1-2-3-4-tetrahydroquinoline-and-the-high-resolution-rotational-spectrum-of-its-lowest-energy-conformer
#12
Kateřina Luková, Radim Nesvadba, Tereza Uhlíková, Daniel A Obenchain, Dennis Wachsmuth, Jens-Uwe Grabow, Štěpán Urban
The saturated part of the 1,2,3,4-tetrahydroquinoline (THQ) molecule allows for the possibility of multiple conformers' existence. High-resolution microwave spectroscopy, supported by high-level quantum chemistry calculations, was used to determine the precise molecular structures of the conformers of THQ. Via the MP2 calculations, we were able to discriminate four stable conformations, i.e. two pairs of energetically equivalent enantiomorphic conformers. The results of the calculations also indicate that energetically non-equivalent conformers are separated by a low energy barrier (104 cm-1) that allows for conformational cooling to occur...
May 17, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29769430/oral-lactobacilli-and-salivary-acidic-proline-rich-proteins-aprp-1-2-in-dental-caries
#13
A K Szkaradkiewicz-Karpinska, A Zeidler, O Goslinska-Kuzniarek, K Uram, A Szkaradkiewicz
A previous study shows that levels of acidic salivary proline-rich phosphoproteins-1/2 (APRP-1/2) increase with caries severity. The aim of this study was to examine whether this relationship also depends on the presence of H2 O2 -producing strains of Lactobacillus spp. Adults with severe caries (decayed, missing, and filled teeth (DMFT) > 13.9, n = 28) were compared with similarly aged adults who had minimal caries (DMFT < 5, n = 20). A total of 48 samples of whole unstimulated saliva were collected in the morning and centrifuged...
February 2018: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29768097/a-new-method-for-assessment-of-the-sludge-disintegration-degree-with-the-use-of-differential-centrifugal-sedimentation
#14
Daniele Silvestri, Stanisław Wacławek, Zuzanna Gončuková, Vinod V T Padil, Klaudiusz Grübel, Miroslav Černík
A novel method for assessing the disintegration degree of waste activated sludge (WAS) with the use of differential centrifugal sedimentation method (DCS) was shown herein. The method was validated for a WAS sample at four levels of disintegration in the range of 14.4-82.6% corresponding to the median particle size range of 8.5-1.6 µm. From the several sludge disintegration methods used (i.e. microwave, alkalization, ultrasounds and peroxydisulfate activated by ultrasounds), the activated peroxydisulfate disintegration resulted in the greatest disintegration degree 83% and the smallest median particle size of WAS...
May 16, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29767448/development-and-validation-of-a-fast-and-sensitive-uhplc-esi-ms-method-for-the-simultaneous-quantification-of-spironolactone-and-its-metabolites-in-ocular-tissues
#15
Naoual Dahmana, Doris Gabriel, Robert Gurny, Yogeshvar N Kalia
Glucocorticoids are a mainstay for the treatment of immune-mediated conditions and inflammatory diseases. However, their chronic use causes numerous side-effects including delays in corneal and cutaneous wound healing. This is attributed to off-target agonism of the mineralocorticoid receptor, which can be reduced by co-administration of a mineralocorticoid receptor antagonist such as spironolactone. The aim of this study was to develop a fast, selective and sensitive UHPLC-ESI-MS method for the simultaneous quantification of spironolactone, its active metabolites - 7α-thiomethylspironolactone and canrenone, the latter's water-soluble prodrug potassium canrenoate, and the synthetic glucocorticoid, dexamethasone, in corneal samples (17α-methyltestosterone served as an internal standard)...
May 16, 2018: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29766931/-in-vitro-differentiation-of-neural-cells-from-human-adipose-tissue-derived-stromal-cells
#16
Shruti D Dave, Chetan N Patel, Aruna V Vanikar, Hargovind L Trivedi
Background: Stem cells, including neural stem cells (NSCs), are endowed with self-renewal capability and hence hold great opportunity for the institution of replacement/protective therapy. We propose a method for in vitro generation of stromal cells from human adipose tissue and their differentiation into neural cells. Materials and Methods: Ten grams of donor adipose tissue was surgically resected from the abdominal wall of the human donor after the participants' informed consents...
May 2018: Neurology India
https://www.readbyqxmd.com/read/29766423/solid-liquid-separation-an-emerging-issue-in-heavy-metal-wastewater-treatment
#17
Liyuan Chai, Qingzhu Li, Qingwei Wang, Xu Yan
Solid-liquid separation (SLS) plays a dominant role in various chemical industries. Nowadays, low efficiency of SLS also become a significant problem in heavy metal (HM) wastewater treatment, affecting the effluent quality (HM concentration and turbidity) and overall process economy. In this context, we summarize here the occurrence of solids in HM wastewater, as well as typical SLS operations used in HM wastewater treatment, including sedimentation, flotation, and centrifugation. More important, this article reviews the improvement of the SLS operations by some technologies, including coagulation, flocculation, ballasted method, seeding method, granular sludge strategy, and external field enhancement...
May 15, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29766321/acute-kidney-injury-after-implantation-of-a-left-ventricular-assist-device-a-comparison-of-axial-flow-heartmate-ii-and-centrifugal-flow-heartware-hvad-devices
#18
Azeen Anjum, Chitaru Kurihara, Andre Critsinelis, Masashi Kawabori, Tadahisa Sugiura, Andrew B Civitello, Whitson B Etheridge, Reynolds M Delgado, Leo Simpson, Joggy K George, Ajith P Nair, O H Frazier, Jeffrey A Morgan
Continuous-flow left ventricular assist devices (CF-LVADs) are increasingly being used to treat advanced, refractory chronic heart failure. Herein, we sought to determine the incidence of postoperative acute kidney injury (AKI) in axial-flow (HeartMate II; HM-II) and centrifugal-flow (HVAD) CF-LVAD recipients, as well as the effect of AKI on mortality. The study cohort comprised 520 patients who received a HM-II (n = 398) or HVAD (n = 122) at our center between November 2003 and March 2016. Their records were reviewed to determine the incidence of RIFLE-defined AKI after LVAD implantation...
May 15, 2018: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29766151/the-effect-of-supernatant-product-of-adipose-tissue-derived-mesenchymal-stem-cells-and-density-gradient-centrifugation-preparation-methods-on-pregnancy-in-intrauterine-insemination-cycles-an-rct
#19
Hoda Fazaeli, Faezeh Davoodi, Naser Kalhor, Reza Tabatabaii Qomi
Background: One of the most important involved factors in pregnancy occurrence following intrauterine insemination (IUI) is semen sample preparation. Recently, supernatant product of adipose tissue derived mesenchymal stem cells (SPAS) method has been shown to improve semen parameters. Objective: To compare the effect of preparation methods in order to IUI, SPAS and density gradient centrifugation (DGC). Materials and Methods: This trial was done on 80 couples with male factor infertility who attend jihad daneshgahi infertility treatment center of Qom province, undergoing ovarian stimulation and IUI cycle...
March 2018: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29764764/microbial-fuel-cells-equipped-with-an-iron-plated-carbon-felt-anode-and-shewanella-oneidensis-mr-1-with-corn-steep-liquor-as-a-fuel
#20
Nichanan Phansroy, Wichean Khawdas, Keigo Watanabe, Yuji Aso, Hitomi Ohara
A single chamber type microbial fuel cell (MFC) with 100 mL of chamber volume and 50 cm2 of air-cathode was developed in this study wherein a developed iron-plated carbon-felt anode and Shewanella oneidensis MR-1 were used. The performance of the iron-plated carbon-felt anode and the possibility of corn steep liquor (CSL) as a fuel, which was the byproduct of corn wet milling and contained lactic acid, was investigated here. MFCs equipped with iron-plated or non-plated carbon-felt anodes exhibited maximum current densities of 443 or 302 mA/m2 using 10 g/L of reagent-grade lactic acid, respectively...
May 12, 2018: Journal of Bioscience and Bioengineering
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