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Red cell pathology

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https://www.readbyqxmd.com/read/28641093/hematological-parameters-and-red-blood-cell-morphological-abnormality-of-glucose-6-phosphate-dehydrogenase-deficiency-co-inherited-with-thalassemia
#1
Jutharat Pengon, Saovaros Svasti, Sumalee Kamchonwongpaisan, Phantip Vattanaviboon
OBJECTIVE/BACKGROUND: Glucose-6-phosphate dehydrogenase (G-6-PD) deficiency and thalassemia are genetically independent hemolytic disorders. Co-inheritance of both disorders may affect red blood cell pathology to a greater extent than normally seen in either disorder alone. This study determines the prevalence and evaluates hematological changes of G-6-PD deficiency and thalassemia co-inheritance. METHODS: G-6-PD deficiency was screened from 200 male thalassemia blood samples using a fluorescent spot test...
June 15, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28639108/fructose-1-6-bisphosphate-reverts-iron-induced-phenotype-of-hepatic-stellate-cells-by-chelating-ferrous-ions
#2
Henrique Bregolin Dias, Gabriele Catyana Krause, Eamin Daidrê Squizani, Kelly Goulart Lima, Aline Daniele Schuster, Leonardo Pedrazza, Bruno de Souza Basso, Bianca Andrade Martha, Fernanda Cristina de Mesquita, Fernanda Bordignon Nunes, Márcio Vinicius Fagundes Donadio, Jarbas Rodrigues de Oliveira
Hepatic fibrosis is an extracellular matrix deposition by hepatic stellate cells (HSC). Fibrosis can be caused by iron, which will lead to hydroxyl radical production and cell damage. Fructose-1,6-bisphosphate (FBP) has been shown to deliver therapeutic effects in many pathological situations. In this work, we aimed to test the effects of FBP in HSC cell line, GRX, exposed to an excess of iron (Fe). The Fe-treatment increased cell proliferation and FBP reversed this effect, which was not due to increased necrosis, apoptosis or changes in cell cycle...
June 21, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28637002/associations-of-high-altitude-polycythemia-with-polymorphisms-in-epha2-and-agt-in-chinese-han-and-tibetan-populations
#3
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)...
June 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636260/lichenoid-keratosis-is-frequently-misdiagnosed-as-basal-cell-carcinoma
#4
D Maor, C Ondhia, L L Yu, J J Chan
Lichenoid keratosis (LK), also known as benign lichenoid keratosis or lichen planus-like keratosis, is a solitary, pink to red-brown scaly plaque representing a host immunological response to a variety of precursor lesions. LK is often misdiagnosed as a dermatological malignancy owing to its clinical resemblance to basal cell carcinoma (BCC) or Bowen disease. We performed a retrospective analysis of the pathology records of a series of LK lesions with reference to the demographic features and accuracy of clinical diagnosis...
June 21, 2017: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/28632647/high-osteogenic-potential-of-adipose-and-muscle-derived-mesenchymal-stem-cells-in-spinal-ossification-model-mice
#5
Xizhe Liu, Gentaro Kumagai, Kanichiro Wada, Toshihiro Tanaka, Toru Asari, Kazuki Oishi, Taku Fujita, Hiroki Mizukami, Ken-Ichi Furukawa, Yasuyuki Ishibashi
STUDY DESIGN: Basic experiments in a mouse model of ossification of the posterior longitudinal ligament (OPLL). OBJECTIVE: To assess the osteogenic potential of mesenchymal stem cells (MSCs) obtained from muscle and adipose tissue in Tiptoe-walking (ttw) mice, in which cervical OPLL compresses the spinal cord and causes motor and sensory dysfunction. SUMMARY OF BACKGROUND DATA: In humans, MSCs have been implicated in the pathogenesis of cervical OPLL...
June 19, 2017: Spine
https://www.readbyqxmd.com/read/28630380/the-immunological-basis-in-the-pathogenesis-of-gout
#6
Junwei Chen, Meng Wu, Jinhua Yang, Jing Wang, Yue Qiao, Xiaofeng Li
Gout is an inflammatory arthritis characterized by red, tender, hot and tumid joints. The development cause and process of gout is very sophisticated; recent studies, notwithstanding, have offered novel perspectives on the mechanism from an immunological viewpoint. The pathological process of gout involves both innate and adaptive immune responses. Other studies have demonstrated that gout development is associated with the presence of monosodium urate (MSU) crystals which serve as a "danger signal" affecting certain immune cells, cytokine production, and effector molecule expression, triggering both types of immune responses...
June 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28629694/interleukin-6-participation-in-pathology-of-ocular-diseases
#7
REVIEW
Forouhe Zahir-Jouzdani, Fatemeh Atyabi, Nazanin Mojtabavi
Interleukin-6 (IL-6) is a multifunctional cytokine that affects a variety of cells in the body such as osteoclasts, hepatocytes, endothelial cells, epithelial cells, white and red blood cells and etc. Elevated levels of IL-6 have been detected in many ocular diseases. Studies show that IL-6 has a major role in the pathology of glaucoma, CRVO, macular edema, ocular neovascularization, posterior capsule opacity formation, keratitis, dry eye disease, allergic eye disease, ocular autoimmune disease, corneal chemical burn, ocular inflammation and so on...
June 10, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28629515/mutual-cross-talk-between-iron-homeostasis-and-erythropoiesis
#8
Ilona Rybinska, Gaetano Cairo
Iron is necessary for physiological processes essential for the activity of all cells, but the erythropoietic compartment is a privileged iron consumer. In fact, a considerable amount of iron is daily required for hemoglobin synthesis and erythroid cell proliferation. Therefore, a tight link exists between iron metabolism and erythropoiesis. The iron needed for hemoglobin synthesis is mainly ensured by inhibiting hepcidin expression, thereby increasing both ferroportin-mediated iron export from the duodenal absorptive cells and iron release from the reticuloendothelial cells that process old and/or damaged red blood cells...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28627881/defining-cancer-cell-bioenergetic-profiles-using-a-dual-organelle-oriented-chemosensor-responsive-to-ph-values-and-electropotential-changes
#9
Zhongwei Xue, Hu Zhao, Jian Liu, Jiahuai Han, Shoufa Han
Cell fate is largely shaped by combined activity of different types of organelles, which often feature functionally critical parameters succumb to pathological inducers. We herein report the analysis of cell bioenergetic profiles with a dual organelle-oriented chemosensor (RC-AMI), partitioning in mitochondria to give blue fluorescence and in lysosomes to give red fluorescence. Responsive to lysosomal pH and mitochondrial transmembrane potential (ΔΨm), two parameters crucial to cell bioenergetics, RC-AMI enables dual colored reporting of lysosomal acidity and ΔΨm, revealing upregulated ΔΨm and imbalance dramatically shifted favoring ΔΨm over lysosomal acidity in cancer cells whereas the tendency is reversed in starved cells...
June 19, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28627345/-effects-of-microrna-21-inhibitor-on-apoptosis-of-type-ii-alveolar-epithelial-cells-in-rats-with-hyperoxia-induced-acute-lung-injury
#10
Lei Shi, Ying He, Bing Bai, Miao Chen
OBJECTIVE: To observe the effects of microRNA-21 (miR-21) inhibitor on apoptosis of type II alveolar epithelial cells (AEC II) in rats with hyperoxia-induced acute lung injury (HALI). METHODS: Eighty Sprague-Dawley (SD) rats were divided into air-control group, hyperoxia injury group, empty-virus control group (200 μL solution with lentivirus was dropped into the nasal) and miR-21 inhibitor pretreatment group (200 μL solution with lentivirus contained miR-21 inhibitor was dropped through the nasal) by random number table...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28624002/pathophysiology-of-venous-ulceration
#11
REVIEW
Joel M Crawford, Brajesh K Lal, Walter N Durán, Peter J Pappas
Our understanding of the pathophysiologic process of venous ulceration has dramatically increased during the past two decades because of dedicated, venous-specific basic science research. Currently, the mechanisms regulating venous ulceration are a combination of macroscopic and microscopic pathologic processes. Macroscopic alterations refer to pathologic processes related to varicose vein formation, vein wall architecture, and cellular abnormalities that impair venous function. These processes are primarily caused by genetic factors that lead to the destruction of normal vein wall architecture and venous hypertension...
July 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28614812/the-discovery-of-water-channels-aquaporins
#12
Dennis Brown
The movement of water into and out of cells is a fundamental biological process that is essential for life. Such water movement not only regulates the activity of individual cells but also is responsible for the functioning of many organ systems and for maintaining whole body water balance. It had long been suspected that water movement across biological cell membranes was in some way enhanced or facilitated by pores or channels, but the search to identify these channels was long and tedious. As is often the case in science, the secret of the water channel was eventually discovered by chance in 1992 by Peter Agre and his colleagues at the Johns Hopkins University in Baltimore, who were working on red blood cell membrane proteins...
2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28614362/effect-of-pathological-heterogeneity-on-shear-wave-elasticity-imaging-in-the-staging-of-deep-venous-thrombosis
#13
Xiaona Liu, Na Li, Chaoyang Wen
BACKGROUND: We aimed to observe the relationship between the pathological components of a deep venous thrombus (DVT), which was divided into three parts, and the findings on quantitative ultrasonic shear wave elastography (SWE) to increase the accuracy of thrombus staging in a rabbit model. METHODS: A flow stenosis-induced vein thrombosis model was used, and the thrombus was divided into three parts (head, body and tail), which were associated with corresponding observation points...
2017: PloS One
https://www.readbyqxmd.com/read/28614220/rituximab-was-used-to-treat-recurrent-igg4-related-hypophysitis-with-ophthalmopathy-as-the-initial-presentation-a-case-report-and-literature-review
#14
Wei-Jun Gu, Qian Zhang, Jian Zhu, Jie Li, Shi-Hui Wei, Yi-Ming Mu
RATIONALE: Immunoglobulin G4 (IgG4)-related hypophysitis is a type of IgG4-related disease (IgG4-RD), which is characterized by plasma cells infiltration in the pituitary causing functional changes and (or) space-occupying effect in the pituitary. IgG4-related hypophysitis is sensitive to hormone therapy in most patients, but recurrence is very likely. PATIENT CONCERNS: Here, we report a 57-year-old male patient with bilateral eye redness as the initial presentation...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28611062/selective-imaging-of-internalized-proteopathic-%C3%AE-synuclein-seeds-in-primary-neurons-reveals-mechanistic-insight-into-transmission-of-synucleinopathies
#15
Richard J Karpowicz, Conor M Haney, Tiberiu S Mihaila, Raizel M Sandler, E James Petersson, Virginia M-Y Lee
Direct cell-to-cell transmission of proteopathic alpha-synuclein (α-syn) aggregates is thought to underlie the progression of neurodegenerative synucleinopathies. However, the specific intracellular processes governing this transmission remain unclear because currently-available model systems are limited. For example, in cell culture models of α-syn-seeded aggregation, it is difficult to discern intracellular from extracellular exogenously applied α-syn seed species. Herein, we employed fluorescently labeled α-syn preformed fibrils (pffs) in conjunction with the membrane-impermeable fluorescence quencher trypan blue to selectively image internalized α-syn seeds in cultured primary neurons and to quantitatively characterize the concentration dependence, time course, and inhibition of pff uptake...
June 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28606862/pathogenicity-profile-of-vibrio-parahaemolyticus-in-farmed-pacific-white-shrimp-penaeus-vannamei
#16
R Ananda Raja, R Sridhar, C Balachandran, A Palanisammi, S Ramesh, K Nagarajan
A pathobiological study was conducted using Vibrio parahaemolyticus (VP) strain isolated from vibriosis affected shrimp (Penaeus vannamei) farms in Kancheepuram and Thiruvallur districts of Tamil Nadu during August 2014 to February 2015. The isolate was identified based on the morphological, physiological, biochemical and molecular characters. LD50 value with intramuscular injection was determined as 2.6 × 10(4) cfu/shrimp and sequential pathology was studied giving 6.1 × 10(3) cfu/shrimp (LD25). Total plate count (TPC) and total Vibrio count (TVC) in water, pond sediment, haemolymph, muscle, HP and gut were found significantly (P < 0...
June 9, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28603913/a-common-complication-of-myelofibrosis-presenting-as-a-rare-finding-in-cerebrospinal-fluid-cytology
#17
Roberto Ruiz-Cordero, Jeffrey L Jorgensen, Savitri Krishnamurthy, Gene Landon
Herein, we present a rare case of intracranial extramedullary hematopoiesis (EMH) diagnosed by cerebrospinal fluid (CSF) cytology and describe the clinical presentation, radiologic, and pathologic findings. A 65 year-old man with a history of progressing primary myelofibrosis was admitted for headaches and right facial numbness. A brain MRI revealed focal abnormalities that were suspicious for leptomeningeal involvement of acute leukemia. Cytologic examination of CSF demonstrated a hypercellular specimen composed of hematopoietic cells including few blasts, as well as maturing red blood cells and granulocytic cells...
June 11, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28602484/red-blood-cell-transfusion-and-outcome-in-cancer
#18
REVIEW
Nayyer Iqbal, Kamal Haider, Vinita Sundaram, Julia Radosevic, Thierry Burnouf, Jerard Seghatchian, Hadi Goubran
Oncology services utilize about 15% of the blood transfusion resources in the USA. Red blood cell transfusion is performed immediately before, during or after major surgery to compensate for blood loss and hemodilution. However, a lack of evidence-based guidelines leads to variable transfusion practices among clinicians. The benefits of transfusing blood products are obvious in life-threatening low blood cell counts or bleeding, but it is becoming apparent that deliberate blood transfusion in some cancer patients can trigger negative clinical impacts...
May 26, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28599308/an-ultra-sensitive-biophysical-risk-assessment-of-light-effect-on-skin-cells
#19
Devasier Bennet, Buddolla Viswanath, Sanghyo Kim, Jeong Ho An
The aim of this study was to analyze photo-dynamic and photo-pathology changes of different color light radiations on human adult skin cells. We used a real-time biophysical and biomechanics monitoring system for light-induced cellular changes in an in vitro model to find mechanisms of the initial and continuous degenerative process. Cells were exposed to intermittent, mild and intense (1-180 min) light with On/Off cycles, using blue, green, red and white light. Cellular ultra-structural changes, damages, and ECM impair function were evaluated by up/down-regulation of biophysical, biomechanical and biochemical properties...
May 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28593146/cholesterol-granuloma-of-the-abdominal-wall-an-unusual-finding-in-the-setting-of-renal-cell-carcinoma
#20
Robert Abraham Obeid, Daniel James Hoppe, Tamer Jacob Dafashy, Rebecca Elaine Waters, Susan Elizabeth Tarry
Cholesterol granulomas are composed of a distinct type of granulation tissue that contains lipids and cholesterol crystals. They are not believed to be a pathological entity, but rather an inflammatory tissue reaction to the presence of trapped blood secondary to localized hemorrhage.(1) Cholesterol granulomas can be identified histologically by the presence of multi-nucleated giant cells, hemosiderin, and red blood cells along with their associated break-down products.(1) Recognizing cholesterol granulomas can provide clinical utility as they demonstrate a tendency to mimic carcinoma both clinically and radiologically...
July 2017: Urology Case Reports
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