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Red blood cells and pathology

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https://www.readbyqxmd.com/read/29024480/osmotic-gradient-ektacytometry-a-valuable-screening-test-for-hereditary-spherocytosis-and-other-red-blood-cell-membrane-disorders
#1
E Llaudet-Planas, J L Vives-Corrons, V Rizzuto, P Gómez-Ramírez, J Sevilla Navarro, M T Coll Sibina, M García-Bernal, A Ruiz Llobet, I Badell, P Velasco-Puyó, J L Dapena, M M Mañú-Pereira
INTRODUCTION: New generation osmotic gradient ektacytometry has become a powerful procedure for measuring red blood cell deformability and therefore for the diagnosis of red blood cell membrane disorders. In this study, we aim to provide further support to the usefulness of osmotic gradient ektacytometry for the differential diagnosis of hereditary spherocytosis by measuring the optimal cutoff values of the parameters provided by this technique. METHODS: A total of 65 cases of hereditary spherocytosis, 7 hereditary elliptocytosis, 3 hereditary xerocytosis, and 171 normal controls were analyzed with osmotic gradient ektacytometry in addition to the routine red blood cell laboratory techniques...
October 10, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29021902/significantly-elevated-foetal-haemoglobin-levels-in-individuals-with-glucose-6-phosphate-dehydrogenase-disease-and-or-sickle-cell-trait-a-cross-sectional-study-in-cape-coast-ghana
#2
Patrick Adu, Essel K M Bashirudeen, Florence Haruna, Edward Morkporkpor Adela, Richard K D Ephraim
BACKGROUND: Previously published data have demonstrated that sickle red blood cells produce twice as much reactive oxygen species (ROS) suggesting that co-inheritance of sickle cell disease (SCD) and glucose 6-phosphate dehydrogenase (G6PD) enzymopathy could lead to more severe anaemia during sickling crises. Elevated foetal haemoglobin (Hb F) levels have been shown to have positive modulatory effects on sickling crises and disease outcomes. This study sought to assess how inheritance of G6PD enzymopathy affects the level of Hb F and haemoglobin concentration in adults in steady state...
2017: BMC Hematology
https://www.readbyqxmd.com/read/29020888/clinical-haematology-and-biochemistry-profiles-of-cattle-naturally-infected-with-theileria-orientalis-ikeda-type-in-new-zealand
#3
K E Lawrence, S F Forsyth, B Vaatstra, A M J McFadden, D Pulford, K Govindaraju, W Pomroy
AIMS: To present the haematology and biochemistry profiles for cattle in New Zealand naturally infected with Theileria orientalis Ikeda type and investigate if the results differed between adult dairy cattle and calves aged <6 months. METHODS: Haematology and biochemistry results were obtained from blood samples from cattle which tested positive for T. orientalis Ikeda type by PCR, that were submitted to veterinary laboratories in New Zealand between October 2012 and November 2014...
October 11, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28984339/a-unique-immunofluorescence-protocol-to-detect-protein-expression-in-vascular-tissues-tacking-a-long-standing-pathological-hitch
#4
Puneet Gandhi, Richa Khare
OBJECTIVE: Autofluorescence induced interference is one of the major drawbacks in immunofluorescence analysis of formalin-fixed paraffin-embedded tissues, as it decreases the signal-to-noise ratio of specific labeling. Apart from aldehyde-fixation induced artifacts; collagen and elastin, red blood cells and endogenous fluorescent pigment lipofuscin are prime sources of autofluorescence in vascular and aging tissues. We describe herein, an optimized indirect-immunofluorescence method for archival formalin-fixed paraffin-embedded tissues tissues and cryo sections, using a combination of 3-reagents in a specific order, to achieve optimal fluorescence signals and imaging...
October 6, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28978568/impact-of-extracellular-fluid-tonicity-on-sickle-red-blood-cell-deformability-and-adhesion
#5
Marcus A Carden, Meredith E Fay, Xinran Lu, Robert G Mannino, Yumiko Sakurai, Jordan C Ciciliano, Caroline E Hansen, Satheesh Chonat, Clinton H Joiner, David K Wood, Wilbur A Lam
Abnormal sickle red blood cell (sRBC) biomechanics, including pathological deformability and adhesion, correlate with clinical severity in sickle cell disease (SCD). Clinical intravenous fluids (IVFs) of various tonicities are often used during treatment of vaso-occlusive pain episodes (VOE), the major cause of morbidity in SCD. However, evidence-based guidelines are lacking and there is no consensus regarding which IVFs to use during VOE. Further, it is unknown how altering extracellular fluid tonicity with IVFs affects sRBC biomechanics in the microcirculation, where vaso-occlusion takes place...
October 4, 2017: Blood
https://www.readbyqxmd.com/read/28966701/in-vitro-particulate-analogue-fluids-for-experimental-studies-of-rheological-and-hemorheological-behavior-of-glucose-rich-rbc-suspensions
#6
Diana Pinho, Laura Campo-Deaño, Rui Lima, Fernando T Pinho
Suspensions of healthy and pathological red blood cells (RBC) flowing in microfluidic devices are frequently used to perform in vitro blood experiments for a better understanding of human microcirculation hemodynamic phenomena. This work reports the development of particulate viscoelastic analogue fluids able to mimic the rheological and hemorheological behavior of pathological RBC suspensions flowing in microfluidic systems. The pathological RBCs were obtained by an incubation of healthy RBCs at a high concentration of glucose, representing the pathological stage of hyperglycaemia in diabetic complications, and analyses of their deformability and aggregation were carried out...
September 2017: Biomicrofluidics
https://www.readbyqxmd.com/read/28958290/lenalidomide-myelodysplastic-syndromes-with-del-5q-and-beyond
#7
REVIEW
Chetasi Talati, David Sallman, Alan List
Myelodysplastic syndrome (MDS) with deletion 5q (del(5q)) is a distinct clinical and pathological disease subset that is exquisitely sensitive to lenalidomide for the treatment of red blood cell transfusion-dependent anemia. Although lenalidomide has erythropoeitic promoting activity in MDS without del(5q) (non-del(5q) MDS), the frequency of response to treatment is lower and relates to biologically separate drug effects. In del(5q) MDS, lenalidomide suppresses the malignant clone to restore effective erythropoiesis by virtue of synthetic lethality, arising from cereblon-dependent degradation of haplodeficient proteins encoded within the commonly deleted region of the chromosome 5q deletion...
July 2017: Seminars in Hematology
https://www.readbyqxmd.com/read/28940216/zeroing-in-on-red-blood-cell-unit-expiry
#8
Fathima Ayyalil, Greg Irwin, Bryony Ross, Michael Manolis, Anoop K Enjeti
BACKGROUND: Expiry of red blood cell (RBC) units is a significant contributor to wastage of precious voluntary donations. Effective strategies aimed at optimal resource utilization are required to minimize wastage. STUDY DESIGN AND METHODS: This retrospective study analyzed the strategic measures implemented to reduce expiry of RBC units in an Australian tertiary regional hospital. The measures, which included inventory rearrangement, effective stock rotation, and the number of emergency courier services required during a 24-month period, were evaluated...
September 20, 2017: Transfusion
https://www.readbyqxmd.com/read/28925802/higher-prevalence-of-spontaneous-cerebral-vasculopathy-and-cerebral-infarcts-in-a-mouse-model-of-sickle-cell-disease
#9
Hyacinth I Hyacinth, Courtney L Sugihara, Thomas L Spencer, David R Archer, Andy Y Shih
Stroke is a dramatic complication of sickle cell disease (SCD), which is associated with cerebral vasculopathies including moya moya, intravascular thrombi, cerebral hyperemia, and increased vessel tortuosity. The spontaneous occurrence of these pathologies in the sickle cell mouse model has not been described. Here, we studied Townes humanized sickle cell and age-matched control mice that were 13 months old. We used in vivo two-photon microscopy to assess blood flow dynamics, vascular topology, and evidence of cerebral vasculopathy...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28925161/-protective-effects-of-liuwei-wuling-tablet-on-acute-alcoholic-induced-liver-injury-in-mice
#10
Ping Yin, He-Rong Cui, Cong-En Zhang, Yuan Zhang, Ya-Kun Meng, Lan-Zhi He, Hui-Min Liu, Xiu-Xiu Sang, Jia-Bo Wang, Zhao-Fang Bai, Xiao-He Xiao
The protective action and the relevant mechanism of Liuwei Wuling tablet on acute alcoholic hepatic injury in mice were investigated. All the C57BL/6 mice were divided randomly into 7 groups including blank, model, bifendate (150 mg•kg⁻¹, positive control) and experimental groups consisted of extremely low dose (0.1 g•kg⁻¹), low (0.5 g•kg⁻¹), upper (4 g•kg⁻¹) and high dose (8 g•kg⁻¹) of Liuwei Wuling tablet groups. The acute liver injury model was induced by modified method that the model, positive control and experimental groups were orally administrated 56% alcohol (6 g•kg⁻¹) twice at 12 hour intervals on the fifth day after drugs administration...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28919343/characterizing-pathology-in-erythrocytes-using-morphological-and-biophysical-membrane-properties-relation-to-impaired-hemorheology-and-cardiovascular-function-in-rheumatoid-arthritis
#11
Oore-Ofe O Olumuyiwa-Akeredolu, Prashilla Soma, Antoinette V Buys, Legesse Kassa Debusho, Etheresia Pretorius
The inflammatory burden of the complex rheumatoid arthritis (RA) disease affects several organ-systems, including rheological properties of blood and its formed elements. Red blood cells (RBCs) are constantly exposed to circulating dysregulated inflammatory molecules that are co-transported within the vasculature; and their membranes may be particularly vulnerable to the accompanying oxidative stress. In the current study, we investigate biophysical and ultrastructural characteristics of RBCs obtained from a cohort of patients using atomic force microscopy (AFM), scanning electron microscopy (SEM) and confocal microscopy (CM)...
September 15, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28906379/accessory-ovarian-steroid-cell-tumor-producing-testosterone-and-cortisol-a-case-report
#12
Li Zang, Mingxia Ye, Guoqing Yang, Jinlong Li, Mei Liu, Jin Du, Weijun Gu, Nan Jin, Lijuan Yang, Jianming Ba, Jingtao Dou, Wensheng Fan, Yiming Mu, Yuanguang Meng, Zhaohui Lyu
RATIONALE: An accessory ovary is a rare structure containing normal ovarian tissue, which has a direct or ligamentous connection with a normal and eutopic ovary. PATIENT CONCERNS: In the study, we reported a 46-year-old woman presented with secondary amenorrhea and virilization symptoms for 1 year. DIAGNOSES: Endocrine evaluation revealed slightly elevated serum cortisol, extremely elevated 24-hour urinary-free cortisol and serum testosterone...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28894066/-thymoma-with-pure-red-cell-aplasia-report-of-a-case
#13
Masanobu Hayakawa, Kazuyuki Oda
A thymoma with pure red cell aplasia (PRCA) is relatively rare. A 71-year-old woman complainted of dizziness and her blood cell count showed a severe anemia. She was diagnosed as PRCA by bone marrow aspiration biopsy, which showed marked decrease in number of erythroblasts. In addition, the chest computed tomography revealed a solid tumor in the anterior mediastinum. She underwent extended thymothymectomy through median sternotomy. The resected specimen was 10.5×9.7 cm in diameter. The pathological diagnosis was type AB thymoma of the World Health Organization classification, and Masaoka stage I...
September 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28881807/associations-of-high-altitude-polycythemia-with-polymorphisms-in-epha2-and-agt-in-chinese-han-and-tibetan-populations
#14
Lijun Liu, Yao Zhang, Zhiying Zhang, Yiduo Zhao, Xiaowei Fan, Lifeng Ma, Yuan Zhang, Haijin He, Longli Kang
High altitude polycythemia (HAPC) refers to the long-term living in the plateau of the hypoxia environment is not accustomed to cause red blood cell hyperplasia. The pathological changes are mainly the various organs and tissue congestion, blood stasis and hypoxia damage. Although chronic hypoxia is the main cause of HAPC, the related molecular mechanisms remain largely unclear. This study aims to explore the genetic basis of HAPC in the Chinese Han and Tibetan populations. We enrolled 100 patients (70 Han, 30 Tibetan) with HAPC and 100 healthy control subjects (30 Han, 70 Tibetan)...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28878831/the-mirage-of-long-term-vital-benefice-risk-for-the-beginning-of-life
#15
Ramona Mohora, Decebal Hudita, Silvia-Maria Stoicescu
INTRODUCTION: Cord blood is the "life" of the fetus until birth. After delivery, the newborn is "single" and forced to adapt to live using the latest resources provided by the mother. Those who believe that a newborn is just a miniature independent adult are just trusting one of the illusions of secular medicine. Cord blood contains precious cells, stem, red and white blood cells. T cells as a part of white blood cells prevent infections and other illnesses. Cochrane Database 2013 published a study reporting the role of delayed umbilical cord clamping for the benefit of infants...
January 2017: Mædica
https://www.readbyqxmd.com/read/28871825/the-effects-of-ex-vivo-ozone-treatment-on-human-erythrocyte-carbonic-anhydrase-enzyme
#16
Gülten Erken, Haydar Ali Erken, Cigdem Bilen, Nahit Gencer
Ozone autohemotherapy is used in the treatment of some diseases. Carbonic anhydrases (CAs, EC 4.2.1.1) are metalloenzymes and play a role in homeostatic mechanisms. The aim of this study was to investigate the effects of ozone on human red blood cell CA (hCA) enzyme activity. Blood samples were treated with different doses of ozone (10, 20, 30 µg/ml) and the erythrocyte total CA activities were determined. Also, purified hCAI and hCAII isozymes were treated with the same doses of ozone and the enzyme activities were measured...
September 5, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28864168/liuweiwuling-tablets-attenuate-bdl-induced-hepatic-fibrosis-via-modulation-of-tgf-%C3%AE-smad-and-nf-%C3%AE%C2%BAb-signaling-pathways
#17
Huimin Liu, Fang Dong, Guangquan Li, Ming Niu, Congen Zhang, Yanzhong Han, Lanzhi He, Ping Yin, Bin Wang, Xiuxiu Sang, Ruishen Li, Jiabo Wang, Zhaofang Bai, Xiaohe Xiao
ETHNOPHARMACOLOGICAL RELEVANCE: Liuweiwuling (LWWL) tablets contain a six-herb Chinese formula and are commonly prescribed to facilitate nourishment of the liver and kidneys, clear away toxic materials and activate blood circulation. Administration of LWWL is well known for its protective effects on the liver and its capacity to confer long-term stability in patients exhibiting reduced transaminase levels. Clinical studies have reported that LWWL can also be used for the treatment of liver fibrosis with associated treatment regimens resulting in a concomitant reduction in transforming growth factor β1 (TGF-β1) levels in the serum of patients with hepatic fibrosis...
August 31, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28861306/the-predictive-value-of-platelet-to-lymphocyte-and-neutrophil-to-lymphocyte-ratio-in-determining-urethral-stricture-after-transurethral-resection-of-prostate
#18
Murat Gül, Emre Altıntaş, Mehmet Kaynar, Muhammet Serdar Buğday, Serdar Göktaş
OBJECTIVE: The pathology of urethral stricture disease is still unclear however progressive inflammation may contribute to the development of urethral stricture. The platelet-to- lymphocyte ratio (PLR) is a new and simple marker that indicates inflammation. In this study we aimed to investigate the predictive value of neutrophil to lymphocyte ratio (NLR) and PLR in patients with urethral stricture who underwent transurethral resection of prostate (TURP). MATERIAL AND METHODS: A total of 208 patients who underwent bipolar-TURP were included in this study...
September 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28852530/multidisciplinary-approach-to-manage-antenatally-suspected-placenta-percreta-updated-algorithm-and-patient-outcomes
#19
Paula S Lee, Samantha Kempner, Michael Miller, Jennifer Dominguez, Chad Grotegut, Jessie Ehrisman, Rebecca Previs, Laura J Havrilesky, Gloria Broadwater, Sarah C Ellestad, Angeles Alvarez Secord
BACKGROUND: Due to the significant morbidity and mortality associated with placenta percreta, alternative management options are needed. Beginning in 2005, our institution implemented a multidisciplinary strategy to patients with suspected placenta percreta. The purpose of this study is to present our current strategy, maternal morbidity and outcomes of patients treated by our approach. METHODS: From 2005 to 2014, a retrospective cohort study of patients with suspected placenta percreta at an academic tertiary care institution was performed...
2017: Gynecologic Oncology Research and Practice
https://www.readbyqxmd.com/read/28836263/b-cells-require-type-1-interferon-to-produce-alloantibodies-to-transfused-kel-expressing-red-blood-cells-in-mice
#20
David R Gibb, Jingchun Liu, Manjula Santhanakrishnan, Prabitha Natarajan, David J Madrid, Seema Patel, Stephanie C Eisenbarth, Christopher A Tormey, Sean R Stowell, Akiko Iwasaki, Jeanne E Hendrickson
BACKGROUND: Alloantibodies to red blood cell (RBC) antigens can cause significant hemolytic events. Prior studies have demonstrated that inflammatory stimuli in animal models and inflammatory states in humans, including autoimmunity and viremia, promote alloimmunization. However, molecular mechanisms underlying these findings are poorly understood. Given that Type 1 interferons (IFN-α/β) regulate antiviral immunity and autoimmune pathology, the hypothesis that IFN-α/β regulates RBC alloimmunization was tested in a murine model...
August 23, 2017: Transfusion
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