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B12 anemia

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https://www.readbyqxmd.com/read/28473932/acquired-thrombotic-thrombocytopenic-purpura-in-a-patient-with-pernicious-anemia
#1
Ramesh Kumar Pandey, Sumit Dahal, Kamal Fadlalla El Jack Fadlalla, Shambhu Bhagat, Bikash Bhattarai
Introduction. Acquired thrombotic thrombocytopenic purpura (TTP) has been associated with different autoimmune disorders. However, its association with pernicious anemia is rarely reported. Case Report. A 46-year-old male presented with blood in sputum and urine for one day. The vitals were stable. The physical examination was significant for icterus. Lab tests' results revealed leukocytosis, macrocytic anemia, severe thrombocytopenia, renal dysfunction, and unconjugated hyperbilirubinemia. He had an elevated LDH, low haptoglobin levels with many schistocytes, nucleated RBCs, and reticulocytes on peripheral smear...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28461497/folate-rescues-vitamin-b12-depletion-induced-inhibition-of-nuclear-thymidylate-biosynthesis-and-genome-instability
#2
Ashley M Palmer, Elena Kamynina, Martha S Field, Patrick J Stover
Clinical vitamin B12 deficiency can result in megaloblastic anemia, which results from the inhibition of DNA synthesis by trapping folate cofactors in the form of 5-methyltetrahydrofolate (5-methylTHF) and subsequent inhibition of de novo thymidylate (dTMP) biosynthesis. In the cytosol, vitamin B12 functions in the remethylation of homocysteine to methionine, which regenerates THF from 5-methylTHF. In the nucleus, THF is required for de novo dTMP biosynthesis, but it is not understood how 5-methylTHF accumulation in the cytosol impairs nuclear dTMP biosynthesis...
May 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28457030/evaluation-of-effect-of-vitamin-d-deficiency-on-anemia-and-erythropoietin-hyporesponsiveness-in-patients-of-chronic-kidney-disease
#3
N Nand, R Mittal
BACKGROUND: The role of vitamin D deficiency and inflammation levels in renal anemia has been documented. However, no study is available in India where the role of vitamin D supplementation in patients with hyporesponsiveness to increased doses of erythropoietin is available. Hence this study. MATERIAL AND METHODS: This study was conducted on 50 adult patients of CKD, on regular, twice weekly hemodialysis. It included 38 cases in group A with deficient serum vitamin D levels (<30 ng/ml) and 12 cases in group B with sufficient vitamin D levels (>30 ng/ml)...
February 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28453069/-double-burden-malnutrition-during-growth-is-becoming-a-reality-in-colombia
#4
Gustavo Cediel-Giraldo, Erika Castaño-Moreno, Diego Gaitán-Charry
Several reports have described in the last decade the coexistence of accelerated increase of obesity with micronutrient deficiencies in developed countries, and is becoming evident in developing nations. This condition may be especially deleterious in children and adolescents with consequences in metabolic risk and growth since early in life. This review describes the evidence of double burden malnutrition during growth period focused on six nutrients (iron, zinc, calcium, vitamin D, vitamin A, sodium, folic acid and vitamin B12) and its biological mechanisms associated with non-communicable disease through span life...
August 2016: Revista de Salud Pública
https://www.readbyqxmd.com/read/28447237/effects-of-metformin-versus-placebo-on-vitamin-b12-metabolism-in-non-diabetic-breast-cancer-patients-in-cctg-ma-32
#5
Ana Elisa Lohmann, Mira F Liebman, William Brien, Wendy R Parulekar, Karen A Gelmon, Lois E Shepherd, Jennifer A Ligibel, Dawn L Hershman, Priya Rastogi, Ingrid A Mayer, Timothy J Hobday, Julie Lemieux, Alastair Mark Thompson, Kathleen I Pritchard, Timothy Joseph Whelan, Som D Mukherjee, Haji I Chalchal, Vanessa Bernstein, Vuk Stambolic, Bingshu E Chen, Pamela Jean Goodwin
BACKGROUND: Metformin is associated with low levels of vitamin B12 (VitB12) in patients with diabetes. The CCTG/MA.32 trial investigates the effects of metformin vs placebo on breast cancer (BC) outcomes in non-diabetic high-risk BC patients. We analyzed VitB12 at baseline and after 6 months of metformin (versus placebo) in the first 492 patients with paired blood samples. METHODS: VitB12 was analyzed centrally in baseline and 6-month fasting plasma. Levels <181 pmol/L were considered deficient, 181-221 pmol/L borderline, and ≥222 pmol/L sufficient...
April 26, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28445440/micronutrient-status-among-pregnant-women-in-zinder-niger-and-risk-factors-associated-with-deficiency
#6
K Ryan Wessells, Césaire T Ouédraogo, Rebecca R Young, M Thierno Faye, Alex Brito, Sonja Y Hess
Anemia and micronutrient (MN) deficiencies in pregnant women are associated with adverse pregnancy outcomes. In Niger, 58.6% of pregnant women are anemic; however, MN statuses are unknown. The study objectives were to estimate the prevalence of MN deficiencies among pregnant women in Zinder, Niger and explore associated risk factors. Pregnant women living in randomly selected rural villages (n = 88) were included. Capillary and venous blood samples (n = 770) were analyzed for hemoglobin (Hb) and plasma ferritin, soluble transferrin receptor (sTfR), zinc (pZn), retinol binding protein (RBP), folate and vitamin B12...
April 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28433448/anemia-complicating-type-2-diabetes-prevalence-risk-factors-and-prognosis
#7
Richard Gauci, Michael Hunter, David G Bruce, Wendy A Davis, Timothy M E Davis
AIMS: To determine the prevalence, risk factors and prognosis of anemia in representative community-based patients with type 2 diabetes. METHODS: Data from the Fremantle Diabetes Study Phase II (FDS2; n=1551, mean age 65.7years, 51.9% males) and Busselton Diabetes Study (BDS; n=186, mean age 70.2years, 50.0% males) cohorts, and from 186 matched BDS participants without diabetes, were analyzed. The prevalence of anemia (hemoglobin ≤130g/L males, ≤120g/L females) was determined in each sample...
April 6, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28429247/a-review-of-the-novel-application-and-potential-adverse-effects-of-proton-pump-inhibitors
#8
REVIEW
Li-Yuan Yu, Lu-Ning Sun, Xue-Hui Zhang, Yue-Qi Li, Lei Yu, Zi-Qing-Yun Yuan, Ling Meng, Hong-Wen Zhang, Yong-Qing Wang
Proton pump inhibitors (PPIs) are known as a class of pharmaceutical agents that target H(+)/K(+)-ATPase, which is located in gastric parietal cells. PPIs are widely used in the treatment of gastric acid-related diseases including peptic ulcer disease, erosive esophagitis and gastroesophageal reflux disease, and so on. These drugs present an excellent safety profile and have become one of the most commonly prescribed drugs in primary and specialty care. Except for gastric acid-related diseases, PPIs can also be used in the treatment of Helicobacter pylori infection, viral infections, respiratory system diseases, cancer and so on...
May 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28416186/nutritional-deficiencies-four-years-after-laparoscopic-sleeve-gastrectomy-are-supplements-required-for-a-lifetime
#9
Tair Ben-Porat, Ram Elazary, Ariela Goldenshluger, Shiri Sherf Dagan, Yoav Mintz, Ram Weiss
BACKGROUND: Data regarding long-term nutritional deficiencies following laparoscopic sleeve gastrectomy (LSG) are scarce. OBJECTIVES: To assess the prevalence of nutritional deficiencies and supplement consumption 4 years post-LSG. SETTING: Hebrew University, Israel. METHODS: Data were collected prospectively from preoperative and 1 and 4 years postoperative including anthropometric parameters, biochemical tests, and supplement intake...
March 2, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28400547/anemia-in-thyroid-diseases
#10
Ewelina Szczepanek-Parulska, Aleksandra Hernik, Marek Ruchała
Anemia is a frequent, although often underestimated, clinical condition accompanying thyroid diseases. In spite of the fact that anemia and thyroid dysfunction often occur simultaneously, the causative relationship between these two disorders remains ambiguous. Thyroid hormones stimulate erythrocytes precursors proliferation directly, as well as via erythropoietin production enhancement, whereas iron-deficient anemia negatively influences thyroid hormonal status. Thus, different forms of anemia might emerge in the course of thyroid dysfunction...
March 28, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28380009/impact-of-fortified-biscuits-on-micronutrient-deficiencies-among-primary-school-children-in-bangladesh
#11
Alayne M Adams, Rushdia Ahmed, A H M Mahbub Latif, Sabrina Rasheed, Sumon K Das, Enamul Hasib, Fahmida Dil Farzana, Farzana Ferdous, Shahnawaz Ahmed, Asg Faruque
BACKGROUND: Micronutrient deficiencies can compromise the development potential of school-aged children, and their later health and productivity as adults. School feeding and school-based fortification approaches have been utilized globally to redress nutritional deficiencies in this age group. OBJECTIVE: We explored the acceptability and micronutrient impact of a Bangladesh Government supported school-based micronutrient fortification program for children attending rural primary schools in 10 disadvantaged sub-districts...
2017: PloS One
https://www.readbyqxmd.com/read/28367192/correlation-between-maternal-and-childhood-vitb12-folic-acid-and-ferritin-levels
#12
Fatima Zeeshan, Attia Bari, Saima Farhan, Uzma Jabeen, Ahsan Waheed Rathore
OBJECTIVE: To determine the correlation between serum folic acid, vitamin B12 and ferritin of mother and child and to study various neonatal risk factors as a cause of anemia in children. METHODS: One hundred eighty children two months to two years of age admitted in the department of Pediatric Medicine of The Children's Hospital and The Institute of Child Health Lahore from January 2013 to January 2015 with common medical conditions having anemia were included...
January 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28360040/vitamin-b12-deficiency-from-the-perspective-of-a-practicing-hematologist
#13
REVIEW
Ralph Green
B12 deficiency is the leading cause of megaloblastic anemia, and although more common in the elderly, can occur at any age. Clinical disease caused by B12 deficiency usually connotes severe deficiency, resulting from a failure of the gastric or ileal phase of physiological B12 absorption, best exemplified by the autoimmune disease pernicious anemia. There are many other causes of B12 deficiency, which range from severe to mild. Mild deficiency usually results from failure to render food B12 bioavailable or from dietary inadequacy...
May 11, 2017: Blood
https://www.readbyqxmd.com/read/28351841/maternofetal-transport-of-vitamin-b12-role-of-tcblr-cd320-and-megalin
#14
Kaveri Arora, Jeffrey M Sequeira, Edward V Quadros
Vitamin B12 deficiency causes megaloblastic anemia and neurologic disorder in humans. Gene defects of transcobalamin (TC) and the transcobalamin receptor (TCblR), needed for cellular uptake of the TC-bound B12, do not confer embryonic lethality. TC deficiency can produce the hematologic and neurologic complications after birth, whereas TCblR/CD320 gene defects appear to produce mild metabolic changes. Alternate maternofetal transport mechanisms appear to provide adequate B12 to the fetus. To understand this mechanism, we evaluated the role of TC, TCblR/CD320, and megalin in maternofetal transport of B12 in a TCblR/CD320 knockout (KO) mouse...
March 28, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28342130/laparoscopic-proximal-gastrectomy-with-double-tract-reconstruction-is-superior-to-laparoscopic-total-gastrectomy-for-proximal-early-gastric-cancer
#15
Do Hyun Jung, Yoontaek Lee, Dong Wook Kim, Young Suk Park, Sang-Hoon Ahn, Do Joong Park, Hyung-Ho Kim
BACKGROUND: Laparoscopic proximal gastrectomy (LPG) with double tract reconstruction (DTR) is known to reduce reflux symptoms, which is a major concern after proximal gastrectomy. The aim of this study is to compare retrospectively the clinical outcomes of patients undergoing LPG with DTR with those treated by laparoscopic total gastrectomy (LTG). METHODS: Ninety-two and 156 patients undergoing LPG with DTR and LTG for proximal stage I gastric cancer were retrospectively analyzed for short- and long-term clinical outcomes...
March 24, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28326965/hematogones-detected-by-flow-cytometry-in-a-child-with-vitamin-b12-deficiency
#16
Lisa Sutton, Nkechi Mba
Vitamin B12 deficiency is a known cause of megaloblastic anemia and bone marrow failure. Bone marrow biopsies are not frequently performed as part of the diagnostic workup and can demonstrate morphologic features that overlap with myelodysplastic syndrome (MDS) and acute leukemia. We describe a case of a dysplastic bone marrow with increased bone marrow hematogones detected by flow cytometry in a child with vitamin B12 deficiency. Hematogones are normal B cell precursors, and hyperplasia has been described in a variety of often reactive conditions and also disease...
March 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28319154/effectiveness-of-community-based-complementary-food-supplement-yingyangbao-distribution-in-children-aged-6-23-months-in-poor-areas-in-china
#17
Jie Wang, Suying Chang, Liyun Zhao, Wentao Yu, Jian Zhang, Qingqing Man, Li He, Yifan Duan, Hui Wang, Robert Scherpbier, Shi-An Yin
BACKGROUND: Poor growth and micronutrient deficiency mainly attack older infants and young children. Some countries have adopted clinically effective measures to combat malnutrition, but the compliance and improvement in efficacy of intervention vehicles in national programs require evaluation. METHODS: Baseline and follow-up cross-sectional surveys were conducted before and after a nutrition intervention program in 3 national poverty counties in China. Soybean-based complementary food supplements called Yingyangbao (YYB) in Chinese and training materials on child feeding were distributed to households with children aged 6-23 months for 18 months...
2017: PloS One
https://www.readbyqxmd.com/read/28314600/anemia-and-hematinic-deficiencies-in-gastric-parietal-cell-antibody-positive-and-negative-oral-mucosal-disease-patients-with-microcytosis
#18
Hung-Pin Lin, Yu-Hsueh Wu, Yi-Ping Wang, Yang-Che Wu, Julia Yu-Fong Chang, Andy Sun
BACKGROUND/PURPOSE: Microcytosis is defined as mean corpuscular volume (MCV) < 80 fL. This study assessed the anemia statuses and hematinic deficiencies in 30 patients with gastric parietal cell antibody-positive microcytosis (GPCA+/microcytosis) and 210 patients with GPCA-negative microcytosis (GPCA-/microcytosis). METHODS: We measured and compared the mean red blood cell (RBC) count, MCV, and RBC distribution width (RDW), as well as blood levels of hemoglobin, iron, vitamin B12, folic acid, and homocysteine among the aforementioned patient groups and 240 healthy controls...
March 14, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28291568/anemia-and-hematinic-deficiencies-in-oral-mucosal-disease-patients-with-microcytosis
#19
Yu-Hsueh Wu, Yi-Ping Wang, Julia Yu-Fong Chang, Yang-Che Wu, Hsin-Ming Chen, Andy Sun
BACKGROUND/PURPOSE: Patients with microcytosis (defined as mean corpuscular volume < 80 fL) are not uncommonly found in oral mucosal disease clinics. This study assessed the anemia statuses and hematinic deficiencies in 240 oral mucosal disease patients with microcytosis. METHODS: The mean red blood cell (RBC) count, mean corpuscular volume, and RBC distribution width, as well as blood concentrations of hemoglobin (Hb), iron, vitamin B12, folic acid, and homocysteine in 240 microcytosis patients and in 240 age- and sex-matched healthy control individuals were measured and compared...
March 11, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28273084/vitamin-d-deficiency-predicts-infections-in-young-north-indian-children-a-secondary-data-analysis
#20
Ranadip Chowdhury, Sunita Taneja, Nita Bhandari, Bireshwar Sinha, Ravi Prakash Upadhyay, Maharaj Kishan Bhan, Tor A Strand
BACKGROUND: Recent studies have demonstrated a relationship between poor vitamin D status and respiratory infections and diarrhea among young children. Acute lower respiratory infections (ALRI) and diarrhea are among the two most important causes of death in under-5 children. In this paper, we examined the extent to which vitamin-D deficiency (<10 ng/ml) predicts ALRI, clinical pneumonia and diarrhea among 6 to 30 months old children. METHODS: We used data from a randomized controlled trial (RCT) of daily folic acid and/or vitamin B12 supplementation for six months in 6 to 30 months old children conducted in Delhi, India...
2017: PloS One
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