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Red cell pathology

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https://www.readbyqxmd.com/read/28106307/normal-saline-is-associated-with-increased-sickle-red-cell-stiffness-and-prolonged-transit-times-in-a-microfluidic-model-of-the-capillary-system
#1
Marcus A Carden, Meredith Fay, Yumiko Sakurai, Brynn McFarland, Sydney Blanche, Caleb Diprete, Clinton H Joiner, Todd Sulchek, Wilbur A Lam
Vaso-occlusive crisis (VOC) is a complex process that occurs in patients with sickle cell disease (SCD) and is often associated with pain and urgent hospitalization. A major instigator of VOC is microvascular obstruction by pathologically stiffened sickle red blood cells (RBCs), and thus therapy relies heavily on optimizing intravenous fluid (IVF) hydration to increase RBC deformability. However, no evidence-based guidelines regarding the choice of IVF currently exist. We therefore analyzed alterations in biomechanical properties of sickle RBCs isolated from patients with homozygous SCD (hemoglobin SS) after exposure to different osmolarities of clinical IVF formulations...
January 20, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28095073/preclinical-and-potential-applications-of-common-western-herbal-supplements-as-complementary-treatment-in-parkinson-s-disease
#2
Luke A Morgan, Oliver Grundmann
Parkinson's disease (PD) is a neurological disorder with a complex pathological etiology, which is not fully understood. Progression of PD may be the result of a buildup of iron in the substantia nigra, microglia-mediated neuroinflammation, dysfunctional mitochondria, or abnormal protein handling. Dopamine is the main neurotransmitter affected, but as the disease progresses, a decrease in all the brain's biogenic amines occurs. Current medication used in the treatment of PD aims to prevent the breakdown of dopamine or increase dopaminergic neurotransmission in the central nervous system...
January 17, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28079779/pathologically-diagnosed-placenta-accreta-and-hemorrhagic-morbidity-in-a-subsequent-pregnancy
#3
Cassandra Roeca, Sarah E Little, Daniela A Carusi
OBJECTIVE: To identify the relationship between pathologically diagnosed placenta accreta and risk of major morbidity in a subsequent pregnancy. METHODS: We conducted a retrospective cohort study of patients with pathologically diagnosed placenta accreta in an index pregnancy who returned with a subsequent pregnancy at our academic center from 2007 to 2015. Subsequent delivery outcomes included minor, major, or no morbidity. Minor morbidity included estimated blood loss 500-1,500 cc for vaginal and 1,000-1,500 cc for cesarean delivery, transfusion of one to three units of red cells, and minor surgical procedures...
January 9, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28077779/embryonic-exposure-to-tcdd-impacts-osteogenesis-of-the-axial-skeleton-in-japanese-medaka-oryzias-latipes
#4
AtLee T D Watson, Antonio Planchart, Carolyn J Mattingly, Christoph Winkler, David M Reif, Seth W Kullman
Recent studies from mammalian, fish, and in vitro models have identified bone and cartilage development as sensitive targets for dioxins and other aryl hydrocarbon receptor ligands. In this study, we assess how embryonic 2,3,7,8-tetrachlorochlorodibenzo-p-dioxin (TCDD) exposure impacts axial osteogenesis in Japanese medaka (Oryzias latipes), a vertebrate model of human bone development. Embryos from inbred wild-type Orange-red Hd-dR and 3 transgenic medaka lines (twist:EGFP, osx/sp7:mCherry, col10a1:nlGFP) were exposed to 0...
November 15, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28073290/intra-and-interorgan-communication-in-the-cardiovascular-system-a-special-view-on-redox-regulation
#5
Axel Gödecke, Judith Haendeler
Intraorgan communication in the cardiovascular system is exerted by direct cell-cell contacts, but also by locally released factors, which modulate neighboring cells by paracrine signals (e.g. NO, vascular endothelial growth factor, adenosine, reactive oxygen species (ROS)). Moreover, cells in close proximity to the typical cardiovascular cells such as fibroblasts, red blood cells, as well as resident and invading immune cells must be considered in attempts to understand cardiovascular function in physiology and pathology...
January 10, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28072844/exploring-the-possibility-of-cryopreservation-of-feline-and-canine-erythrocytes-by-rapid-freezing-with-penetrating-and-non-penetrating-cryoprotectants
#6
Denys Pogozhykh, Yuliya Pakhomova, Olga Pervushina, Nicola Hofmann, Birgit Glasmacher, Gennadiy Zhegunov
Efficient application of veterinary blood transfusion approaches for small companion animals requires readily available supply of the donor material. This can be achieved by developing of effective biobanking technologies allowing long-term storage of donor blood components via cryopreservation. Transfusion of an erythrocyte concentrate allows the successful correction of various hematological pathologies, severe bleeding, and etc. While in the past there were several approaches to cryopreserve red blood cells of dogs, to our knowledge there is virtually no data on cryopreservation of feline erythrocytes...
2017: PloS One
https://www.readbyqxmd.com/read/28070107/effects-of-reduced-food-intake-for-4-weeks-on-physiological-parameters-in-toxicity-studies-in-dogs
#7
Junya Morita, Tomoko Izumi, Bunichiro Ogawa, Yoshiki Ban, Hironori Takagi, Minoru Sasaki, Shunsuke Tsutsumi
This study sought to clarify the effects of reduced feeding on physiological parameters in dogs to enable appropriate evaluations of the safety and toxicity of test compounds. We measured alkaline phosphatase isozymes and the circulating blood volume, as well as clinical signs, body weight, hematology, blood chemistry, electrocardiography, organ weight, and histopathology, in male beagle dogs fed a diet consisting of 300 g/day or 150 g/day for 4 weeks. There were no abnormal clinical signs in any of the dogs...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28062667/smn-deficiency-negatively-impacts-red-pulp-macrophages-and-spleen-development-in-mouse-models-of-spinal-muscular-atrophy
#8
Marie-Therese Khairallah, Jacob Astroski, Sarah K Custer, Elliot J Androphy, Craig L Franklin, Christian L Lorson
Spinal muscular atrophy (SMA) is a progressive neurodegenerative disease that is the leading genetic cause of infantile death. It is caused by severe deficiency of the ubiquitously expressed Survival Motor Neuron (SMN) protein. SMA is characterized by α-lower motor neuron loss and muscle atrophy, however, there is a growing list of tissues impacted by SMN deficiency beyond motor neurons. The non-neuronal defects are observed in the most severe Type I SMA patients and most of the widely used SMA mouse models, however, as effective therapeutics are developed, it is unclear whether additional symptoms will be uncovered in longer lived patients...
January 5, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28032711/treatment-for-periprosthetic-cyst-after-total-hip-arthroplasty-analysis-of-six-cases
#9
Wei-Ding Cui, Wei-Min Fan, Zhe-Feng Chen, Feng Liu
The present study investigates the pathogenesis of periprosthetic cysts after total hip replacement, and explores appropriate treatment appoaches. Six patients with periprosthetic cysts after total hip arthroplasty were treated at the First Affiliated Hospital of Nanjing Medical University between 2009 and 2014. During surgery, it was found that all cysts communicated with the hip and the hip prosthesis could be seen after cyst excision. Four patients simply underwent cyst excision, and light red liquid was found in the cyst...
November 2016: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28032356/use-of-computer-assisted-image-analysis-for-semi-quantitative-histology-of-the-hepatopancreas-in-whiteleg-shrimp-penaeus-vannamei-boone
#10
F Cervellione, C McGurk, T Berger Eriksen, W Van den Broeck
Despite the increasing use of novel molecular techniques in pathology, histology remains the standard method for monitoring tissue alterations and for assessing pathology. Histopathological evaluation is generally laborious and subjective with risk of discrepancies in semi-quantitative scoring between pathologists. In contrast, computer-assisted image analysis (CAIA) is potentially faster, more objective and thus suitable for routine screening. Limited research has been carried out on CAIA in crustacean histopathology, and the methods described were not fully automated...
December 29, 2016: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28025506/fatty-acids-in-membranes-as-homeostatic-metabolic-and-nutritional-biomarkers-recent-advancements-in-analytics-and-diagnostics
#11
REVIEW
Carla Ferreri, Annalisa Masi, Anna Sansone, Giorgia Giacometti, Anna Vita Larocca, Georgia Menounou, Roberta Scanferlato, Silvia Tortorella, Domenico Rota, Marco Conti, Simone Deplano, Maria Louka, Anna Rosaria Maranini, Arianna Salati, Valentina Sunda, Chryssostomos Chatgilialoglu
Fatty acids, as structural components of membranes and inflammation/anti-inflammatory mediators, have well-known protective and regulatory effects. They are studied as biomarkers of pathological conditions, as well as saturated and unsaturated hydrophobic moieties in membrane phospholipids that contribute to homeostasis and physiological functions. Lifestyle, nutrition, metabolism and stress-with an excess of radical and oxidative processes-cause fatty acid changes that are examined in the human body using blood lipids...
December 22, 2016: Diagnostics
https://www.readbyqxmd.com/read/28011628/a-genetically-encoded-biosensor-for-visualizing-hypoxia-responses-in-vivo
#12
Tvisha Misra, Martin Baccino-Calace, Felix Meyenhofer, David Rodriguez-Crespo, Hatice Akarsu, Ricardo Armenta-Calderón, Thomas A Gorr, Christian Frei, Rafael Cantera, Boris Egger, Stefan Luschnig
Cells experience different oxygen concentrations depending on location, organismal developmental stage, and physiological or pathological conditions. Responses to reduced oxygen levels (hypoxia) rely on the conserved Hypoxia-Inducible Factor 1 (HIF-1). Understanding the developmental and tissue-specific responses to changing oxygen levels has been limited by the lack of adequate tools for monitoring HIF-1 in vivo. To visualise and analyse HIF-1 dynamics in Drosophila, we used a hypoxia biosensor consisting of GFP fused to the oxygen-dependent degradation domain (ODD) of the HIF-1 homologue Sima...
December 23, 2016: Biology Open
https://www.readbyqxmd.com/read/28006998/supraventricular-tachycardia-during-the-first-year-of-life-is-subclinical-inflammation-the-trigger
#13
P P Bassareo, V Fanos, M Pala, L Antonucci, P Neroni, R Antonucci, G Mercuro
BACKGROUND: Neutrophil/lymphocyte ratio (NLR) and red cell distribution width (RDW) may be associated with the onset of arrhythmias in adults, thus underlining a possible inflammatory etiology. Paroxysmal supraventricular tachycardia (SVT) is the most frequent pathological tachycardia in childhood. AIMS: To verify NLR and RDW levels in a group of children (<1 year) affected by SVT with a structurally normal heart and without fever nor inflammatory diseases; to compare NLR and RDW before and after SVT resolution, to verify whether the latter was related with the reduction in inflammatory state; to identify -in SVT subtypes caused by a re-entry mechanism- an NLR and RDW cut-off point beyond which adenosine was ineffective in preventing SVT recurrence...
December 23, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28002795/sodium-fluoride-naf-causes-toxic-effects-on-splenic-development-in-mice
#14
Ping Kuang, Huidan Deng, Hengmin Cui, Lian Chen, Jing Fang, Zhicai Zuo, Junliang Deng, Xun Wang, Ling Zhao
At present, very limited studies focus on the toxic effect of sodium fluoride (NaF) on splenic development of human and animals in vivo. This study was firstly designed to evaluate the toxic effects of NaF on the splenic development of mice in vivo by observing histopathological lesions, changes of splenic growth index (GI), T and B cells, immunoglobulin A (IgA), immunoglobulin G (IgG) and immunoglobulin M (IgM) contents, cytokine protein expression levels, and cell cycle and cyclins/cdks protein expression levels using the methods of pathology, flow cytometry (FCM), western blot (WB), and enzyme-linked immunosorbent assay (ELISA)...
December 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/28000856/cyp2j2-participates-in-atherogenesis-by-mediating-cell-proliferation-migration-and-foam-cell-formation
#15
Rui Li, Yuan Zhang, Huacheng Yan, Hua Xiao, Yunjun Ruan, Jian Qiu, Lei Shi
Atherosclerosis (AS) is a common pathological basis for the development of various cardiovascular and cerebrovascular diseases, however, currently, no effective treatment against AS has been established. It has previously been suggested that intravascular cytochrome P450 (CYP) oxidase is involved in the pathogenesis of AS. The present study investigated the role of cytochrome P450, family 2, subfamily J, polypeptide 2 (CYP2J2), the most common subtype of CYP oxidase in the human body, in the occurrence and development of AS...
February 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27991544/transcriptomic-profiling-of-microglia-reveals-signatures-of-cell-activation-and-immune-response-during-experimental-cerebral-malaria
#16
Barbara Capuccini, Jingwen Lin, Carlos Talavera-López, Shahid M Khan, Jan Sodenkamp, Roberta Spaccapelo, Jean Langhorne
Cerebral malaria is a pathology involving inflammation in the brain. There are many immune cell types activated during this process, but there is little information on the response of microglia, in this severe complication. We examined microglia by genome wide transcriptomic analysis in a model of experimental cerebral malaria (ECM), in which C57BL/6 mice are infected with Plasmodium berghei ANKA. Thousands of transcripts were differentially expressed in microglia at two different time points during infection...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27984435/tissue-fluorescence-imaging-velscope-for-quick-non-invasive-diagnosis-in-oral-pathology
#17
Marco Cicciù, Alan Scott Herford, Gabriele Cervino, Giuseppe Troiano, Floriana Lauritano, Luigi Laino
Oral squamous cell carcinoma is the most common form of malignancy of the oral cavity; its incidence is increasing and late-stage presentation is common. It is usually predated by oral premalignant disorders. For this reason, early diagnosis is fundamental to reduce the malignant transformation of oral premalignant disorders and for increase the survival rate for oral cancer. Scraping the surface of the lesion is useful for having cytological features of the investigated tissue. The features of smears of oral premalignant lesions are the keratinization growth (red, orange, brown), the increased nuclear area and so the nuclear hyperchromatism, the nuclear pleomorphism, and the chromatin clumping...
December 14, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27966213/occult-upper-gastrointestinal-mucosal-abnormalities-in-critically-ill-patients
#18
C Ovenden, M P Plummer, S Selvanderan, T A Donaldson, N Q Nguyen, L M Weinel, M E Finnis, M J Summers, Y Ali Abdelhamid, M J Chapman, C K Rayner, A M Deane
BACKGROUND: The objectives of this study were to estimate the frequency of occult upper gastrointestinal abnormalities, presence of gastric acid as a contributing factor, and associations with clinical outcomes. METHODS: Data were extracted for study participants at a single centre who had an endoscopy performed purely for research purposes and in whom treating physicians were not suspecting gastrointestinal bleeding. Endoscopic data were independently adjudicated by two gastroenterologists who rated the likelihood that observed pathological abnormalities were related to gastric acid secretion using a 3-point ordinal scale (unlikely, possible or probable)...
December 13, 2016: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/27959440/%C3%AE%C2%BA%C3%A2-carrageenan%C3%A2-derived-pentasaccharide-attenuates-a%C3%AE-25%C3%A2-35%C3%A2-induced-apoptosis-in-sh%C3%A2-sy5y-cells-via-suppression-of-the-jnk-signaling-pathway
#19
Yang Liu, Liumi Jiang, Xiaofeng Li
β-amyloid (Aβ)-mediated neuronal apoptosis is an important pathological feature of Alzheimer's disease (AD). Inhibiting apoptosis induced by Aβ may lead to the development of a potential therapeutic target for AD treatment. κ‑carrageenan‑derived pentasaccharide (KCP) extracted from marine red algae is involved in a variety of biological activities and may be an effective in the treatment of AD. The present study aimed to investigate the neuroprotective effect of KCP against Aβ25‑35‑induced neurotoxicity in SH‑SY5Y cells, and to examine the potential underlying mechanisms...
January 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27936946/study-of-the-effects-of-polymerized-porcine-hemoglobin-ppolyhb-in-an-acute-anemia-rat-model
#20
Huifang Liu, Chengbin Yan, Kunping Yan, Wenjin Zhu, Yuesheng Shen, Bo Yang, Chao Chen, Hongli Zhu
The objective of this study was to investigate the recovery ability of polymerized porcine hemoglobin (pPolyHb) in a rat model of acute anemia caused by normovolemic hemodilution (ANH). After the ANH procedure, rats were infused with either pPolyHb or red blood cells. The results showed pPolyHb could carry a sufficient amount of oxygen to the tissues to maintain normal aerobic metabolism and hemodynamic stability, without any significant toxic effects on renal and liver function according to pathological, and biochemical analysis...
December 9, 2016: Artificial Cells, Nanomedicine, and Biotechnology
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