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Macrocytosis

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https://www.readbyqxmd.com/read/28821482/hypersegmented-neutrophils-and-oval-macrocytes-in-the-setting-of-b12-deficiency-and-pancytopaenia
#1
Sean James Farrelly, Kieran Anthony O'Connor
Vitamin B12 deficiency is a recognised pathology in several populations, with a particular prevalence in an older adult population. We present two cases whereby vitamin B12 deficiency is the causative factor in marked pancytopaenia. Oval macrocytosis and hypersegmented neutrophils were noted on both peripheral blood samples, which are a characteristic finding in macrocytic anaemia due to B12 deficiency. Distinct underlying pathologies were identified in both cases; food-cobalamin malabsorption and pernicious anaemia...
August 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28777814/prevalence-of-preoperative-anemia-abnormal-mean-corpuscular-volume-and-red-cell-distribution-width-among-surgical-patients-in-singapore-and-their-influence-on-one-year-mortality
#2
Yilin Eileen Sim, Hide Elfrida Wee, Ai Leen Ang, Niresh Ranjakunalan, Biauw Chi Ong, Hairil Rizal Abdullah
INTRODUCTION: Preoperative anemia and high red cell distribution width (RDW) are associated with higher perioperative mortality. Conditions with high RDW levels can be categorized by mean corpuscular volume (MCV). The relationship between RDW, anemia and MCV may explain causality between high RDW levels and outcomes. We aim to establish the prevalence of preoperative anemia and distribution of RDW and MCV among pre-surgical patients in Singapore. In addition, we aim to investigate the association between preoperative anemia, RDW and MCV levels with one-year mortality after surgery...
2017: PloS One
https://www.readbyqxmd.com/read/28749257/first-record-of-hematologic-values-in-free-living-and-captive-maned-sloths-bradypus-torquatus-xenartha-bradypodidae
#3
Lilian S Catenacci, Aisla Nascimento, Elza S Muniz-Neta, Camila R Cassano, Sharon L Deem, Elizabeth S Travassos da Rosa, Patricia Parker, Alexandre D Munhoz
Bradypus torquatus is a rare and endemic sloth species from the Atlantic Forest, Brazil. Due to a lack of medical information including hematologic reference parameters for the species, hematologic baseline values were determined using samples from 14 clinically healthy B. torquatus , under captive (n = 7) and free-living (n = 7) conditions in Bahia State, Brazil. Additionally, the morphology of the blood cells is presented, with a demonstration that the Barr body chromosome may assist with sex determination of the species...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28678030/is-macrocytosis-a-potential-biomarker-of-the-efficacy-of-dose-dense-paclitaxel-carboplatin-combination-therapy-in-patients-with-epithelial-ovarian-cancer
#4
Tihana Boraska Jelavić, Toni Boban, Luka Brčić, Eduard Vrdoljak
The aims of this study were to investigate a clinical observation that patients with epithelial ovarian cancer treated with first-line platinum-paclitaxel chemotherapy combination (TP) develop macrocytosis and to explore the possible predictive role of macrocytosis in response rate, progression-free survival (PFS), and overall survival. A retrospective analysis of laboratory and clinical data on 184 consecutive ovarian cancer patients treated with first-line TP chemotherapy in a single oncology center from 2004 to 2015 was carried out...
September 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28618975/a-black-cohosh-extract-causes-hematologic-and-biochemical-changes-consistent-with-a-functional-cobalamin-deficiency-in-female-b6c3f1-n-mice
#5
Michelle C Cora, William Gwinn, Ralph Wilson, Debra King, Suramya Waidyanatha, Grace E Kissling, Sukhdev S Brar, Dorian Olivera, Chad Blystone, Greg Travlos
Black cohosh rhizome, available as a dietary supplement, is most commonly marketed as a remedy for dysmenorrhea and menopausal symptoms. A previous subchronic toxicity study of black cohosh dried ethanolic extract (BCE) in female mice revealed a dose-dependent ineffective erythropoiesis with a macrocytosis consistent with the condition known as megaloblastic anemia. The purpose of this study was to investigate potential mechanisms by which BCE induces these particular hematological changes. B6C3F1/N female mice (32/group) were exposed by gavage to vehicle or 1,000 mg/kg BCE for 92 days...
July 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28582589/macrocytosis-secondary-to-hydroxyurea-therapy
#6
Francisco O Conrado, Amy L Weeden, Abbie L Speas, Mary K Leissinger
A 10-year-old, male neutered Shetland Sheepdog was presented to the University of Florida for evaluation of a well-granulated mast cell tumor. Hydroxyurea therapy was instituted and serial CBCs showed persistent mild anemia and macrocytosis without a corresponding increase in polychromasia. The dog's MCV increased progressively, reaching its highest value of 100.0 fL after 6 months of treatment, and a diagnosis of macrocytosis associated with hydroxyurea therapy was made. The dog's increase in MCV was prominent, and rapidly decreased after the drug was discontinued, consistent with previous observations in human and canine subjects treated with hydroxyurea...
June 5, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28540293/altered-erythropoiesis-in-mouse-models-of-type-3-hemochromatosis
#7
R M Pellegrino, F Riondato, L Ferbo, M Boero, A Palmieri, L Osella, P Pollicino, B Miniscalco, G Saglio, A Roetto
Type 3 haemochromatosis (HFE3) is a rare genetic iron overload disease which ultimately lead to compromised organs functioning. HFE3 is caused by mutations in transferrin receptor 2 (TFR2) gene that codes for two main isoforms (Tfr2α and Tfr2β). Tfr2α is one of the hepatic regulators of iron inhibitor hepcidin. Tfr2β is an intracellular isoform of the protein involved in the regulation of iron levels in reticuloendothelial cells. It has been recently demonstrated that Tfr2 is also involved in erythropoiesis...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28532286/hb-bakersfield-hba1-c-151_152insggagcc-the-insertion-of-arg-his-between-codons-49-and-50-of-the-%C3%AE-1-globin-chain-leads-to-increased-oxygen-affinity
#8
REVIEW
Saskia Brunner-Agten, Thomas von Känel, Benno Röthlisberger, Charles Broquet, Andreas R Huber
We describe an insertion variant on the α1-globin gene (HBA1) identified in a 49-year-old woman of Jurassian ancestry presenting with macrocytosis and erythrocytosis. The variant resulted in a peak of 15.5% of the total hemoglobin (Hb) on high performance liquid chromatography (HPLC). Stability and oxygen affinity testing revealed that the variant was stable and had an increased oxygen affinity. Molecular genetic testing detected the heterozygous sequence variant Hb Bakersfield [α50(CE8)His→0; Arg-Ser-His- inserted between 49(CE7) and 51(CE9) of α1; HBA1: c...
January 2017: Hemoglobin
https://www.readbyqxmd.com/read/28444757/hypocobalaminaemia-as-a-cause-of-bone-marrow-failure-and-pancytopenia-in-a-cat
#9
E L Stanley, A E Eatroff
CASE REPORT: A male Domestic Short-hair cat was presented for chronic weight loss, lethargy and hyporexia. Complete haematological examination revealed non-regenerative anaemia, neutropenia and thrombocytopenia, as well as Howell-Jolly bodies, anisocytosis, polychromasia and macrocytosis on blood smear evaluation. Histopathological evaluation of bone marrow biopsy disclosed hypocellularity consistent with bone marrow failure. Concurrent hypocobalaminaemia was identified and treated with parenteral cyanocobalamin supplementation...
May 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28398409/-macrocytosis-of-red-blood-cells-and-early-arthritis-positive-for-rheumatoid-factor-such-as-initial-manifestations-of-a-neuroendocrine-gastrin-secreting-gastric-tumor
#10
Ciro Manzo, Maria Natale, Gennaro Mossetti, Aniello Piscopo
Neuroendocrine tumors (NETs) represent uncommon tumors arising from the excessive proliferation of enterochromaffin-like (ECL) cells (so-called Kulchitsky cell). Gastric NETs (GNET) represent less than 2% of all NETs and less than 1% of all stomach neoplasms. In particular, gastric NETs type 1 (associated to chronic atrophic gastritis and hypergastrinaemia) is the more frequent one, accounting for 70-80% of all GNET. A macrocytic anemia is a frequent manifestation of GNET type 1. The possibility that macrocytic anemia appear during therapy with methotrexate (MTX) is widely documented...
March 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28393661/persistence-of-macrocytosis-after-discontinuation-of-zidovudine-in-hiv-infected-patients
#11
Inski Yu, Richard N Greenberg, Timothy N Crawford, Alice C Thornton, Thein Myint
The duration of macrocytosis after stopping zidovudine (ZDV) is unknown. Among 104 HIV-infected patients treated with ZDV for more than 1 year, 84 patients had macrocytosis at ZDV discontinuation. The median mean corpuscular volume (MCV) was 114.6 fL (range 100-128 fL). Patients were divided into 2 groups: those who did (resolved macrocytosis, n = 36) and did not (persistent macrocytosis, n = 48) normalize MCV at 3 to 6 months after ZDV discontinuation. Alcohol use ( P = .02), smoking ( P = .03), and lower (but within normal range) folic acid levels ( P = ...
January 1, 2017: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/28304246/a-mouse-model-for-human-unstable-hemoglobin-santa-ana
#12
Samantha I Miyashiro, Silvia M G Massironi, Claudia M C Mori, Carolina C Cruz, Mitika K Hagiwara, Paulo C Maiorka
In the present study, we described the phenotype, histologic morphology, and molecular etiology of a mouse model of unstable hemoglobin Santa Ana. Hematologic evaluation of anemic mice (Anem/+) discovered after N-ethyl-N-nitrosourea mutagenesis revealed moderate anemia with intense reticulocytosis and polychromasia, followed by anisocytosis, macrocytosis, hypochromia, and intraerythrocytic inclusion and Heinz bodies. The mice also demonstrated hemoglobinuria, bilirubinemia, and erythrocytic populations with differing resistance to osmotic lysis...
December 1, 2016: Comparative Medicine
https://www.readbyqxmd.com/read/28203345/sweet-s-syndrome-associated-with-clonal-hematopoiesis-of-indeterminate-potential-responsive-to-5-azacitidine
#13
REVIEW
George Yaghmour, Eric Wiedower, Bassam Yaghmour, Sara Nunnery, Eric Duncavage, Mike G Martin
Sweet's syndrome (SS) is a rare condition characterized by the abrupt appearance of painful skin lesions due to neutrophilic dermal infiltration. Hematologic neoplasms, particularly acute myeloid leukemia (AML) and myelodysplastic syndromes (MDSs), have been commonly reported in association with SS. Clonal hematopoiesis of indeterminate potential (CHIP) is an emerging entity that is a precursor state to myeloid neoplasms. CHIP has not been previously associated with SS. We report the case of a 71-year-old man who presented with recurrent, painful edematous and erythematous papules and nodules for 18 months despite treatment with corticosteroids...
February 2017: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/28168815/descriptive-study-of-the-complete-blood-count-in-newborn-infants-with-down-syndrome
#14
Francisco Javier Martínez-Macías, Lucina Bobadilla-Morales, Janet González-Cruz, Moisés Quiles-Corona, Alfredo Corona-Rivera, Christian Peña-Padilla, Mireya Orozco-Vela, Rocío Silva-Cruz, Fernando Velarde-Rivera, Jorge Román Corona-Rivera
The usefulness of the complete blood count (CBC) during the first week of life in infants with Down syndrome (DS) has been recognized; however, studies are limited and have evaluated only some of the parameters of the CBC. Here, we report a prospective study of 135 infants with cytogenetically confirmed DS and a reference group of 226 infants without birth defects all born during the period 2009-2015 at the Dr. Juan I. Menchaca Civil Hospital of Guadalajara (Guadalajara, Mexico). The goal was to evaluate hematological findings in the CBC during the first 7 days of life, interpreted according to gestational and postnatal age...
April 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28073728/biermer-anemia-hematologic-characteristics-of-66-patients-in-a-clinical-hematology-unit-at-senegal
#15
F Seynabou, N Fatou Samba Diago, D Oulimata Diop, S Abibatou Fall, D Nafissatou
Hematological manifestations can lead to diagnosis of pernicious anemia, also known as Biermer disease and Biermer anemia. This disease has been little studied among black Africans. Our aim is to describe its diagnostic and therapeutic aspects and outcome in our practice. This descriptive study retrospectively examined the records of 66 patients with pernicious anemia seen at the Clinical Hematology Unit of Le Dantec Hospital in Senegal from January 1, 2000, to June 30, 2014. Symptoms were anemic syndrome (40 cases), hemolytic anemia (13), anemic heart failure (7), isolated pallor of the mucous membranes (5), and venous thrombosis (2)...
November 1, 2016: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28060124/fanconi-anemia-a-rarely-considered-cause-of-macrocytosis-during-childhood
#16
Deniz Aslan
We describe a Turkish boy newly diagnosed with Fanconi anemia with mutation in the FANCA gene. The patient, with normal clinical phenotype and negative chromosomal breakage test result, presented with macrocytosis. No clinical or laboratory changes were observed in a follow-up period of 4 years. The diagnosis was confirmed molecularly after a prolonged and exhaustive investigation. He was found to be a compound heterozygote for 2 mutations in the FANCA gene (1 of which is novel, c.4261-2A>C). We present this experience to alert physicians that Fanconi anemia should be considered in the differential diagnosis of otherwise unexplained macrocytosis during childhood...
January 5, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28043314/hepatitis-b-leading-to-megaloblastic-anemia-and-catastrophic-peripheral-thrombocytopenia
#17
Muhammad Hafeez, Tariq Sarfraz, Raja Ghayas Khan, Abdul Rafe, Ghulam Rasool, Kamran Nazir Ahmed
Hepatitis B virus (HBV) typically causes chronic hepatitis, cirrhosis, and hepatocellular carcinoma. It is associated with a variety of extrahepatic complications. We herein, present a rare extrahepatic complication of HBV infection. A 32-year man presented with melena, bleeding from gums and fever. Peripheral blood examination revealed anemia, macrocytosis and severe thrombocytopenia. His hepatitis B surface antigen (HBsAg) was positive but deoxyribonucleic acid (HBV DNA) by polymerase chain reaction (PCR) was negative...
December 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/27999131/melanoderma-uncommon-presentation-of-a-common-condition
#18
Priyadarshini Gunaseelan, Sarveswari Narasingarajan, Shriraam Mahadevan
A 64-year-old man presented with blackish pigmentation of skin and tongue for more than 2 years that did not improve with local remedies. He had no history of comorbid medical or surgical illnesses. General examination showed severe hyperpigmentation of skin and mucosa and also showed anaemia. Systemic examination was unremarkable except for Romberg sign and mild hyperreflexia. Adrenal insufficiency was ruled out by normal cortisol levels and haemogram showed macrocytosis with hypersegmented neutrophils suggestive of severe vitamin B12 deficiency which confirmed by low serum B12 levels...
December 20, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27836952/prevalence-and-characteristics-of-tert-and-terc-mutations-in-suspected-genetic-pulmonary-fibrosis
#19
Raphael Borie, Laure Tabèze, Gabriel Thabut, Hilario Nunes, Vincent Cottin, Sylvain Marchand-Adam, Grégoire Prevot, Abdellatif Tazi, Jacques Cadranel, Herve Mal, Lidwine Wemeau-Stervinou, Anne Bergeron Lafaurie, Dominique Israel-Biet, Clement Picard, Martine Reynaud Gaubert, Stephane Jouneau, Jean-Marc Naccache, Julie Mankikian, Christelle Ménard, Jean-François Cordier, Dominique Valeyre, Marion Reocreux, Bernard Grandchamp, Patrick Revy, Caroline Kannengiesser, Bruno Crestani
Telomerase reverse transcriptase (TERT) or telomerase RNA (TERC) gene mutation is a major monogenic cause of pulmonary fibrosis. Sequencing of TERT/TERC genes is proposed to patients with familial pulmonary fibrosis. Little is known about the possible predictors of this mutation and its impact on prognosis.We retrospectively analysed all the genetic diagnoses made between 2007-2014 in patients with pulmonary fibrosis. We evaluated the prevalence of TERT/TERC disease-associated variant (DAV), factors associated with a DAV, and the impact of the DAV on survival...
December 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/27825815/anemia-and-hematinic-deficiencies-in-anti-gastric-parietal-cell-antibody-positive-or-all-autoantibodies-negative-recurrent-aphthous-stomatitis-patients
#20
Hung-Pin Lin, Yu-Hsueh Wu, Yi-Ping Wang, Yang-Che Wu, Julia Yu-Fong Chang, Andy Sun
BACKGROUND/PURPOSE: Approximately 13% of recurrent aphthous stomatitis (RAS) patients have serum anti-gastric parietal cell antibody (GPCA) positivity. This study assessed whether serum GPCA or RAS itself was a significant factor causing hematinic deficiencies and anemia statuses in GPCA-positive RAS (GPCA+/RAS) and all autoantibodies-negative RAS (Abs-/RAS) patients. METHODS: The mean corpuscular volume (MCV) and mean blood hemoglobin (Hb), iron, vitamin B12, and folic acid levels were measured and compared between any two of three groups of 31 GPCA+/RAS patients, 240 Abs-/RAS patients, and 342 healthy control subjects...
February 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
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