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https://www.readbyqxmd.com/read/29761147/efficacy-of-long-term-oral-vitamin-b12-supplementation-after-total-gastrectomy-results-from-a-prospective-study
#1
Joana Moleiro, Susana Mão de Ferro, Sara Ferreira, Miguel Serrano, Margarida Silveira, António Dias Pereira
Background/Objectives: Vitamin B12 (VB12) deficiency is a common complication after total gastrectomy which may be associated with megaloblastic anemia and potentially irreversible neurologic symptoms. Intramuscular supplementation of VB12 has been considered the standard treatment, although it is associated with high costs and patient discomfort. Patients/Methods: We performed a prospective uncontrolled study (ACTRN12614000107628) in order to evaluate the clinical and laboratory efficacy of long-term oral VB12 supplementation in patients submitted to total gastrectomy...
April 2018: GE Portuguese Journal of Gastroenterology
https://www.readbyqxmd.com/read/29745746/ca-15-3-predicting-breast-cancer-relapse-beware-of-vitamin-b12-deficiency
#2
Elie El Rassy, Maya Al Ghor, Joseph Kattan
A sustained increase of cancer antigen 15-3 serum levels was found in a 54-year-old woman treated 2 years ago for early stage breast cancer, without any evidence of cancer recurrence. The patient thereafter developed severe megaloblastic anemia secondary to vitamin B12 deficiency. Supplementation with B12 to reverse the anemia led to the normalization of the cancer antigen 15-3 serum levels. As such, with the limited understanding of molecular biology, the integrative approach of clinical history, physical examination, and diagnostic imaging remain pivotal in the management of cancer patients...
May 10, 2018: Personalized Medicine
https://www.readbyqxmd.com/read/29741927/transcellular-transport-of-cobalamin-in-aortic-endothelial-cells
#3
Luciana Hannibal, Keerthana Bolisetty, Armend Axhemi, Patricia M DiBello, Edward V Quadros, Sergey Fedosov, Donald W Jacobsen
Cobalamin [Cbl (or B12 )] deficiency causes megaloblastic anemia and a variety of neuropathies. However, homeostatic mechanisms of cyanocobalamin (CNCbl) and other Cbls by vascular endothelial cells are poorly understood. Herein, we describe our investigation into whether cultured bovine aortic endothelial cells (BAECs) perform transcytosis of B12 , namely, the complex formed between serum transcobalamin and B12 , designated as holo-transcobalamin (holo-TC). We show that cultured BAECs endocytose [57 Co]-CNCbl-TC (source material) via the CD320 receptor...
May 9, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29716882/vacuolization-in-myeloid-and-erythroid-precursors-in-a-child-with-menkes-disease
#4
Seçil Sayın, Şule Ünal, Mualla Cetin, Fatma Gumruk
A five year-old boy, who was under follow-up with a clinical and biochemical diagnosis of Menkes Disease (MD) since ten months of age, was admitted with diarrhea. On examination he had a characteristic cherubic face hypopigmented, sparse hair, hepatosplenomegaly, hypotonia with brisk deep tendon reflexes. Hemogram revealed: Hb:5.5g/dL, Hct:16.2%, RBC:1.69x1012/L, MCV:95.8fL, MCH:32.3pg, RDW:19.2%, WBC:2.2x109/L and platelet count;157x109/L. Serum vitamin B12 level was 575pg/mL. Serum copper level was 81μg/dL and serum zinc level was 152μg/dL...
April 30, 2018: Turkish Journal of Haematology: Official Journal of Turkish Society of Haematology
https://www.readbyqxmd.com/read/29668470/secondary-hodgkin-lymphoma-and-myelodysplastic-syndrome-mds-after-paclitaxel-carboplatin-treatment-in-a-patient-with-small-cell-lung-cancer
#5
Marija Petrusevska, Irina Panovska Stavridis, Kristina Mladenovska, Gordana Petrushevska
Herein synchronous occurrence of Hodgkin lymphoma and secondary myelodysplastic syndrome in a 60 year old male patient with small cell lung cancer treated with combined chemotherapy (carboplatin and paclitaxel) and radiotherapy is presented. The objective of this report is to stress the importance of documenting and monitoring adverse drug reactions that arise from chemotherapy. After four years of treatment with the combined chemotherapy, the patient presented inguinal lymphadenopathy and enlarged lymph nodes and histopathology rapport was suggestive for plasmacytoid variant of Castleman disease...
December 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/29668046/black-cohosh-extracts-and-powders-induce-micronuclei-a-biomarker-of-genetic-damage-in-human-cells
#6
Stephanie L Smith-Roe, Carol D Swartz, Kim G Shepard, Steven M Bryce, Stephen D Dertinger, Suramya Waidyanatha, Grace E Kissling, Scott S Auerbach, Kristine L Witt
Black cohosh extract (BCE) is a widely used dietary supplement marketed to women to alleviate symptoms of gynecological ailments, yet its toxicity has not been well characterized. The National Toxicology Program (NTP) previously reported significant increases in micronucleated erythrocytes in peripheral blood of female Wistar Han rats and B6C3F1/N mice administered 15-1,000 mg BCE/kg/day by gavage for 90 days. These animals also developed a dose-dependent nonregenerative macrocytic anemia characterized by clinical changes consistent with megaloblastic anemia...
April 18, 2018: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29668043/folate-deficiency-increases-chromosomal-damage-and-mutations-in-hematopoietic-cells-in-the-transgenic-mutamouse-model
#7
Danielle P LeBlanc, Nathalie A Behan, Jason M O'Brien, Francesco Marchetti, Amanda J MacFarlane
Folate deficiency causes megaloblastic anemia and neural tube defects, and is also associated with some cancers. In vitro, folate deficiency increases mutation frequency and genome instability, as well as exacerbates the mutagenic potential of known environmental mutagens. Conversely, it remains unclear whether or not elevated folic acid (FA) intakes are beneficial or detrimental to the induction of DNA mutations and by proxy human health. We used the MutaMouse transgenic model to examine the in vivo effects of FA deficient, control, and supplemented diets on somatic DNA mutant frequency (MF) and genome instability in hematopoietic cells...
April 18, 2018: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29620684/neutropenia-and-increased-mean-corpuscular-volume-mcv-with-abnormal-neurological-findings-a-case-of-cobalamin-d-deficiency
#8
Pembe Soylu Ustkoyuncu, Mustafa Kendirci, Fatih Kardas, Songul Gokay, Huseyin Per, Ayse Kacar Bayram
BACKGROUND: Disorders of intracellular cobalamin (Cbl) metabolism are classified from A to J according to biochemical phenotype, and genetic and complementation analyses. CblD-deficient patients present with developmental, hematologic, neurologic, and metabolic findings. CLINICAL OBSERVATION: An 11-year-old boy presented with neutropenia, increased mean corpuscular volume, psychomotor retardation, and seizures. His plasma total homocysteine and urinary methylmalonic acid levels were elevated, and a homozygous nonsense mutation [p...
April 3, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29609162/determining-mean-corpuscular-volume-and-red-blood-cell-count-using-electrochemical-collision-events
#9
Thy L T Ho, Nhung T T Hoang, Jungeun Lee, Jun Hui Park, Byung-Kwon Kim
Blood tests (e.g., red blood cell (RBC) count) are crucial for detecting, diagnosing, and monitoring the progression of blood disorders. Here, we report the development of a new and rapid method for electrochemically detecting RBCs using single-particle collision events. The principle of this method relies on the electrochemical oxidation of an electroactive redox species (potassium ferrocyanide) hindered by an RBC attached to an electrode surface. A decrease in staircase current, caused by the collision of RBCs on the electrode, was observed...
March 26, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29562446/-infiltration-of-tumor-associated-macrophages-in-multiple-myeloma-and-its-clinical-significance
#10
Q L Gui, Y S Wang, S Huang, Y Wan, H P Wang, Z G Zhu, M M Li, H Y Zhu, Q S Tao, Y Y Shen, Q Zhang, H Qin
Objective: To investigate the clinical significance of tumor associated macrophages (TAM) in multiple myeloma (MM) and the relationship with angiogenesis and immunosuppression. Methods: Seventy cases of MM patients diagnosed from August 2015 to June 2017 were enrolled in the study as experimental group, 20 cases of benign hematological diseases (13 with iron deficiency anemia and 7 with megaloblastic anemia) patients as control group. Immunohistochemical method was used to detect the expression of CD163, CD34 and VEGF in bone marrow samples, and flow cytometry was used to detect the proportion of regulatory T cell (Treg cells), ELISA was used to detect the level of IL-10, and the clinical features were analyzed...
February 14, 2018: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/29532755/homocysteine-and-hyperhomocysteinaemia
#11
Bozidarka L Zaric, Milan Obradovic, Vladan Bajic, Mohamed A Haidara, Milos Jovanovic, Esma R Isenovic
Homocysteine (Hcy) is thiol group containing the amino acid, which naturally occurs in all humans. Hcy is degraded in the body through two metabolic pathways, while a minor part is excreted through kidneys. The chemical reactions that are necessary for degradation of Hcy require the presence of the folic acid, vitamins B6 and B12. Consequently, the level of the total Hcy in the serum is influenced by the presence or absence of these vitamins. An elevated level of the Hcy, hyperhomocysteinemia (HHcy) and homocystinuria are connected with occlusive artery disease, especially in the brain, the heart, and the kidney, in addition to venous thrombosis, chronic renal failure, megaloblastic anemia, osteoporosis, depression, Alzheimer's disease, pregnancy problems, and others...
March 12, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29499976/effect-of-two-different-sublingual-dosages-of-vitamin-b-12-on-cobalamin-nutritional-status-in-vegans-and-vegetarians-with-a-marginal-deficiency-a-randomized-controlled-trial
#12
Cristian Del Bo', Patrizia Riso, Claudio Gardana, Antonella Brusamolino, Alberto Battezzati, Salvatore Ciappellano
BACKGROUND & AIMS: Vegetarians and vegans are more vulnerable to vitamin B12 deficiency with severe risks of megaloblastic anemia, cognitive decline, neuropathy, and depression. An easy and simple method of supplementation consists of taking one weekly dosage of 2000 μg. However, single large oral doses of vitamin B12 are poorly absorbed. The present research evaluates the ability of two different sublingual dosages of vitamin B12 (350 μg/week vs 2000 μg/week) in improving cyanocobalamin (vitamin B12 ) nutritional status in vegans and vegetarians with a marginal deficiency...
February 15, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29450569/pharmacogenomics-in-diabetes-outcomes-of-thiamine-therapy-in-trma-syndrome
#13
Abdelhadi M Habeb, Sarah E Flanagan, Mohamed A Zulali, Mohamed A Abdullah, Renata Pomahačová, Veselin Boyadzhiev, Lesby E Colindres, Guillermo V Godoy, Thiruvengadam Vasanthi, Ramlah Al Saif, Aria Setoodeh, Amirreza Haghighi, Alireza Haghighi, Yomna Shaalan, Andrew T Hattersley, Sian Ellard, Elisa De Franco
AIMS/HYPOTHESIS: Diabetes is one of the cardinal features of thiamine-responsive megaloblastic anaemia (TRMA) syndrome. Current knowledge of this rare monogenic diabetes subtype is limited. We investigated the genotype, phenotype and response to thiamine (vitamin B1 ) in a cohort of individuals with TRMA-related diabetes. METHODS: We studied 32 individuals with biallelic SLC19A2 mutations identified by Sanger or next generation sequencing. Clinical details were collected through a follow-up questionnaire...
May 2018: Diabetologia
https://www.readbyqxmd.com/read/29417043/leukemoid-reaction-in-megaloblastic-anemia-of-the-puerperium-an-unusual-cause
#14
Hans Raj Pahadiya, Manoj Lakhotia, Akanksha Choudhary, Sukhdev Choudhary
No abstract text is available yet for this article.
July 2017: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/29379566/recurrent-stroke-in-a-child-with-trma-syndrome-and-slc19a2-gene-mutation
#15
Parvaneh Karimzadeh, Toktam Moosavian, Hamidreza Moosavian
Here we report a 5-month-old boy with thiamine Responsive Megaloblastic Anemia syndrome (TRMA syndrome) with several attacks of stroke, admitted to Mofid Children's Hospital, Tehran, Iran, in 2016. In addition to the cardinal clinical manifestations of the syndrome, other manifestations comprise thiamine-responsive megaloblastic anemia, diabetes mellitus, and sensor neural hearing loss. The patient showed the ischemic attack of stroke. Megaloblastic anemia and diabetes were diagnosed at 8 months and was successfully treated with vitamin and insulin prescription...
2018: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/29368379/pancytopenia-and-megaloblastic-erythropoiesis-reveal-a-novel-gif-mutation
#16
Paul Saultier, Marie Loosveld, Jean-François Benoist, Gérard Michel
No abstract text is available yet for this article.
January 25, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29330271/vitamin-b-12-deficiency-unusual-cause-of-jaundice-in-an-adolescent
#17
Phalguna Kousika Katakam, Asha P Hegde, Manju Venkataramaiahyappa
Vitamin B12 deficiency in vegans is a known cause of megaloblastic anaemia. We report an adolescent girl who presented with jaundice and weight loss for 6 months secondary to vitamin B12 deficiency, leading to megaloblastic anaemia. Replacement with vitamin B12 reversed her symptoms, resulting in weight gain, and normalised her haemoglobin, red blood cell morphology, bilirubin levels and serum vitamin B12 levels.
January 12, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29327715/de-novo-pure-erythroid-leukemia-refining-the-clinicopathologic-and-cytogenetic-characteristics-of-a-rare-entity
#18
Erica F Reinig, Patricia T Greipp, April Chiu, Matthew T Howard, Kaaren K Reichard
Per the revised fourth edition World Health Organization classification of acute myeloid leukemia, pure erythroid leukemia is now the sole type of acute erythroid leukemia. The diagnosis of this rare entity is often challenging and the cytologic overlap with non-neoplastic (eg, megaloblastic anemia) and neoplastic entities (eg, other types of acute leukemia and non-hematopoietic malignancies) warrants a significant degree of clinical, laboratory, immunophenotypic, and genetic investigation. Given the limited number of reports of this rare and diagnostically challenging entity, we report detailed clinicopathologic characteristics from 15 patients, the largest series thus far, of primary de novo pure erythroid leukemia to provide further diagnostic insights into this entity and reveal strategies for making the diagnosis...
May 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29246873/unmethylated-promoter-dna-correlates-with-p53-expression-and-apoptotic-levels-only-in-vitamin-b9-and-b12-deficient-megaloblastic-anemia-but-not-in-non-megaloblastic-anemia-controls
#19
Manish K Yadav, Nandini M Manoli, Selvaraj Vimalraj, SubbaRao V Madhunapantula
Cyanocobalamin (Vitamin B12, VB12) and Folic acid (Vitamin B9, VB9) deficiency leads to anemia in women. We have recently shown low VB12 and VB9 levels in the serum of megaloblastic anemia (MBA) patients. Further, our study demonstrated elevated homocysteine and p53, respectively, in the serum and bone marrow aspirates of MBA patients but not in non-MBA subjects. However, it is unknown whether any gender specific variation in VB12 and VB9 level exists in MBA and non-MBA patients? In addition, it is unclear whether low VB12 and VB9 has a role in the regulation of p53 expression in MBA patients? And whether elevated p53 is functionally active? If so, does bone marrow aspirates of MBA patients show elevated apoptosis...
April 1, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29210962/long-term-multimodal-imaging-of-ocular-findings-associated-with-thiamine-responsive-megaloblastic-anemia
#20
Edmund Tsui, Jenna Tauber, Irene Barbazetto, Susan K Gelman
PURPOSE: To report on 5-year multimodal imaging of ocular findings in a patient with thiamine-responsive megaloblastic anemia. METHODS: Observational case report. RESULTS: A 20-year-old-man with a history of thiamine-responsive megaloblastic anemia demonstrated a symmetric bull's eye maculopathy. Spectral domain optical coherence tomography revealed disruption of the parafoveal ellipsoid zone, fundus autofluorescence demonstrated foveal hypoautofluorescence, and full-field electroretinogram testing revealed a decreased photopic and scotopic response consistent with cone-rod dystrophy...
November 23, 2017: Retinal Cases & Brief Reports
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