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Philip J, Venkatesan S, Shanmugam K. Prevalence of anemia and its social determinants among the male residents of an urban area in Tamil Nadu, India. J Family Med Prim Care 2024; 13:1068-1072. [PMID: 38736782 PMCID: PMC11086800 DOI: 10.4103/jfmpc.jfmpc_1575_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/14/2023] [Accepted: 12/22/2023] [Indexed: 05/14/2024] Open
Abstract
Introduction India has a high burden of anemia among the South Asian countries. Anemia has been extensively studied in the female and child population, with less attention given to males. The present study aims to assess the prevalence of anemia among males residing in an urban area and associated social determinants. Methods A community-based cross-sectional study was conducted among 300 males (during September and October 2021) in an urban area of Coimbatore, Tamil Nadu. A portable hemoglobin photometer was used to detect the prevalence of anemia. A structured questionnaire was used to collect details on social determinants of anemia such as dietary practice, education, income, and sanitary practices. Results The mean age of study participants was 34 ± 5.23 years. The prevalence of overall anemia among men was 20.3% (95% confidence interval [CI]: 15.9-25.3%), with moderate and severe anemia being 5.7% (95% CI: 3.3-8.9%) and 1% (95% CI: 0.2-2.9%), respectively. Belonging to a lower socioeconomic class (odds ratio [OR] = 6.50, P < 0.05) and consuming more than two cups of tea (OR = 7.28, P < 0.05) were significantly associated with anemia. Conclusion Our study depicts a high burden of anemia among males. Health education on the role of dietary factors contributing to anemia needs to be emphasized with special focus on the frequency of tea intake. Primary care physicians can include screening for anemia in their routine practice for men belonging to lower socioeconomic groups. Consideration should be made to include male populations also under the National Anemia Control program.
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Affiliation(s)
- Jithin Philip
- Department of Community Medicine, Institute of Medical Sciences and Research Coimbatore, Tamil Nadu, India
| | - Sandhiya Venkatesan
- Department of Community Medicine, Institute of Medical Sciences and Research Coimbatore, Tamil Nadu, India
| | - Karthikeyan Shanmugam
- Department of Community Medicine, Institute of Medical Sciences and Research Coimbatore, Tamil Nadu, India
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Fletcher A, Forbes A, Svenson N, Wayne Thomas D. Guideline for the laboratory diagnosis of iron deficiency in adults (excluding pregnancy) and children. Br J Haematol 2021; 196:523-529. [PMID: 34693519 DOI: 10.1111/bjh.17900] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/01/2021] [Accepted: 10/02/2021] [Indexed: 12/22/2022]
Affiliation(s)
- Andrew Fletcher
- Hull University Teaching Hospitals NHS Trust, Castle Hill Hospital, Cottingham, UK
| | - Adam Forbes
- Royal Cornwall Hospital NHS Trust, Truro, UK
| | - Nicola Svenson
- Hull University Teaching Hospitals NHS Trust, Hull Royal Infirmary, Hull, UK
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Delaney KM, Guillet R, Pressman EK, Ganz T, Nemeth E, O'Brien KO. Serum Erythroferrone During Pregnancy Is Related to Erythropoietin but Does Not Predict the Risk of Anemia. J Nutr 2021; 151:1824-1833. [PMID: 33982118 PMCID: PMC8245876 DOI: 10.1093/jn/nxab093] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/12/2021] [Accepted: 03/15/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Maintaining adequate iron status during pregnancy is important for the mother and her developing fetus. Iron homeostasis is influenced by 3 regulatory hormones: erythropoietin (EPO), hepcidin, and erythroferrone (ERFE). To date, normative data on ERFE across pregnancy and its relations to other hormones and iron status indicators are limited. OBJECTIVES The objective of this study was to characterize maternal ERFE across pregnancy and at delivery and evaluate the utility of hepcidin, ERFE, and EPO in identifying women with increased iron needs. METHODS ERFE was measured in extant serum samples collected from 2 longitudinal cohorts composed of women carrying multiple fetuses (n = 79) and pregnant adolescents (n = 218) at midgestation (∼26 wk) and delivery (∼39 wk). Receiver operating characteristic curves were generated to characterize the predictive ability of serum ERFE, hepcidin, and EPO and their ratios to identify women at increased risk of iron deficiency and anemia. RESULTS In these pregnant women, mean ERFE was 0.48 ng/mL at both ∼25 wk of gestation and at delivery. ERFE was positively associated with EPO at midgestation (β = 0.14, P = 0.002, n = 202) and delivery (β = 0.12, P < 0.001, n = 225) but was not significantly associated with maternal hepcidin at any time point surveyed. Of all hormones measured at midgestation and delivery, EPO was best able to identify women with anemia (AUC: 0.86 and 0.75, respectively) and depleted iron stores (AUC: 0.77 and 0.84), whereas the hepcidin-to-EPO ratio was best able to identify women with iron deficiency anemia (AUC: 0.85 and 0.84). CONCLUSIONS Maternal ERFE was significantly associated with EPO but was not able to identify women with gestational iron deficiency. At term, the hepcidin-to-EPO ratio, an index that accounts for both iron status and erythropoietic demand, and EPO were the strongest indicators of maternal iron deficiency and anemia. This trial was registered at clinicaltrials.gov as NCT04517734 (https://clinicaltrials.gov/ct2/show/NCT04517734).
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Affiliation(s)
| | - Ronnie Guillet
- Department of Pediatrics, Division of Neonatology, University of Rochester School of Medicine, Rochester, NY, USA
| | - Eva K Pressman
- Department of Obstetrics and Gynecology, University of Rochester School of Medicine, Rochester, NY, USA
| | - Tomas Ganz
- Center for Iron Disorders, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Elizabeta Nemeth
- Center for Iron Disorders, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
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Heckl C, Eisel M, Lang A, Homann C, Paal M, Vogeser M, Rühm A, Sroka R. Spectroscopic methods to quantify molecules of the heme‐biosynthesis pathway: A review of laboratory work and point‐of‐care approaches. TRANSLATIONAL BIOPHOTONICS 2021. [DOI: 10.1002/tbio.202000026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Christian Heckl
- Laser‐Forschungslabor, LIFE Center, Department of Urology University Hospital, LMU Munich Munich Germany
- Department of Urology University Hospital, LMU Munich Munich Germany
| | - Maximilian Eisel
- Laser‐Forschungslabor, LIFE Center, Department of Urology University Hospital, LMU Munich Munich Germany
- Department of Urology University Hospital, LMU Munich Munich Germany
| | - Alexander Lang
- Laser‐Forschungslabor, LIFE Center, Department of Urology University Hospital, LMU Munich Munich Germany
- Department of Urology University Hospital, LMU Munich Munich Germany
| | - Christian Homann
- Laser‐Forschungslabor, LIFE Center, Department of Urology University Hospital, LMU Munich Munich Germany
- Department of Urology University Hospital, LMU Munich Munich Germany
| | - Michael Paal
- Institute of Laboratory Medicine University Hospital, LMU Munich Munich Germany
| | - Michael Vogeser
- Institute of Laboratory Medicine University Hospital, LMU Munich Munich Germany
| | - Adrian Rühm
- Laser‐Forschungslabor, LIFE Center, Department of Urology University Hospital, LMU Munich Munich Germany
- Department of Urology University Hospital, LMU Munich Munich Germany
| | - Ronald Sroka
- Laser‐Forschungslabor, LIFE Center, Department of Urology University Hospital, LMU Munich Munich Germany
- Department of Urology University Hospital, LMU Munich Munich Germany
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Zinc Protoporphyrin Is a Reliable Marker of Functional Iron Deficiency in Patients with Inflammatory Bowel Disease. Diagnostics (Basel) 2021; 11:diagnostics11020366. [PMID: 33670067 PMCID: PMC7926353 DOI: 10.3390/diagnostics11020366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/07/2021] [Accepted: 02/18/2021] [Indexed: 12/21/2022] Open
Abstract
Iron deficiency (ID) is a common manifestation of inflammatory bowel disease (IBD), arising primarily due to chronic inflammation and/or blood loss. There is no gold standard for ID diagnosis, which is often complicated by concomitant inflammation. Zinc protoporphyrin (ZnPP) correlates with parameters of iron homeostasis and has been identified as a promising marker for ID, irrespective of inflammation. We investigated the diagnostic performance of ZnPP in ID, iron deficiency anemia, anemia of chronic disease and mixed anemia in a cross-sectional study in 130 patients with IBD. Different parameters were compared by receiver operator characteristic (ROC) analysis as detectors of iron-restricted erythropoiesis (IRE). IRE was detected in 91 patients (70.0%); fifty-nine (64.8%) had absolute ID and 23 (25.4%) functional ID. When inflammation was present, ZnPP was a more reliable sole biomarker of IRE than MCV, transferrin saturation (TSAT) or ferritin (AUC; 0.855 vs. 0.763, 0.834% and 0.772, respectively). The specificity of TSAT was significantly lower than ZnPP when inflammation was present (38% vs. 71%, respectively). We conclude that ZnPP is a reliable biomarker of functional ID in patients with IBD and more dependable than ferritin or TSAT, which are influenced by chronic inflammation. We propose that ZnPP may also have utility in patients with other chronic diseases.
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6
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Hart SJ, Zimmerman K, Linardic CM, Cannon S, Pastore A, Patsiogiannis V, Rossi P, Santoro SL, Skotko BG, Torres A, Valentini D, Vellody K, Worley G, Kishnani PS. Detection of iron deficiency in children with Down syndrome. Genet Med 2020; 22:317-325. [PMID: 31417190 PMCID: PMC8039980 DOI: 10.1038/s41436-019-0637-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 08/05/2019] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Current American Academy of Pediatrics guidelines for children with Down syndrome (DS) recommend a complete blood count (CBC) at birth and hemoglobin annually to screen for iron deficiency (ID) and ID anemia (IDA) in low-risk children. We aimed to determine if macrocytosis masks the diagnosis of ID/IDA and to evaluate the utility of biochemical and red blood cell indices for detecting ID/IDA in DS. METHODS We reviewed data from 856 individuals from five DS specialty clinics. Data included hemoglobin, mean corpuscular volume, red cell distribution width (RDW), percent transferrin saturation (TS), ferritin, and c-reactive protein. Receiver operating characteristic curves were calculated. RESULTS Macrocytosis was found in 32% of the sample. If hemoglobin alone was used for screening, all individuals with IDA would have been identified, but ID would have been missed in all subjects. RDW had the highest discriminability of any single test for ID/IDA. The combination of RDW with ferritin or TS led to 100% sensitivity, and RDW combined with ferritin showed the highest discriminability for ID/IDA. CONCLUSION We provide evidence to support that a CBC and ferritin be obtained routinely for children over 1 year old with DS rather than hemoglobin alone for detection of ID.
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Affiliation(s)
- Sarah J Hart
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA.
| | - Kanecia Zimmerman
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Corinne M Linardic
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, USA
| | - Sheila Cannon
- Down Syndrome Center of Western Pennsylvania, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Anna Pastore
- Laboratory of Molecular Genetics and Functional Genomics, Division of Genetic and Rare Disease, Bambino Gesù Children's Hospital and Research Institute, Rome, Italy
| | - Vasiliki Patsiogiannis
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA
| | - Paolo Rossi
- Laboratory of Molecular Genetics and Functional Genomics, Division of Genetic and Rare Disease, Bambino Gesù Children's Hospital and Research Institute, Rome, Italy
- Department of Pediatrics, Bambino Gesù Children's Hospital and Research Institute, Rome, Italy
| | - Stephanie L Santoro
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA
- Division of Genetics, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Brian G Skotko
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Amy Torres
- Down Syndrome Program, Division of Medical Genetics and Metabolism, Department of Pediatrics, Massachusetts General Hospital, Boston, MA, USA
| | - Diletta Valentini
- Department of Pediatrics, Bambino Gesù Children's Hospital and Research Institute, Rome, Italy
| | - Kishore Vellody
- Down Syndrome Center of Western Pennsylvania, University of Pittsburgh Medical Center Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Gordon Worley
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Priya S Kishnani
- Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
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Füllenbach C, Stein P, Glaser P, Triphaus C, Lindau S, Choorapoikayil S, Schmitt E, Zacharowski K, Hintereder G, Hennig G, Homann C, Stepp H, Spahn GH, Kaserer A, Schedler A, Meybohm P, Spahn DR. Screening for iron deficiency in surgical patients based on noninvasive zinc protoporphyrin measurements. Transfusion 2019; 60:62-72. [DOI: 10.1111/trf.15577] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 09/05/2019] [Accepted: 09/22/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Christoph Füllenbach
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtGoethe University Frankfurt Germany
| | - Philipp Stein
- Institute of AnesthesiologyUniversity and University Hospital of Zurich Zurich Switzerland
| | - Patricia Glaser
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtGoethe University Frankfurt Germany
| | - Chris Triphaus
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtGoethe University Frankfurt Germany
| | - Simone Lindau
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtGoethe University Frankfurt Germany
| | - Suma Choorapoikayil
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtGoethe University Frankfurt Germany
| | - Elke Schmitt
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtGoethe University Frankfurt Germany
| | - Kai Zacharowski
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtGoethe University Frankfurt Germany
| | - Gudrun Hintereder
- Central Laboratory, Center of Internal MedicineUniversity Hospital Frankfurt, Goethe University Frankfurt Germany
| | - Georg Hennig
- Laser‐Forschungslabor, LIFE‐ZentrumKlinikum der Universität München Munich Germany
- Department of UrologyKlinikum der Universität München Munich Germany
| | - Christian Homann
- Laser‐Forschungslabor, LIFE‐ZentrumKlinikum der Universität München Munich Germany
- Department of UrologyKlinikum der Universität München Munich Germany
| | - Herbert Stepp
- Laser‐Forschungslabor, LIFE‐ZentrumKlinikum der Universität München Munich Germany
- Department of UrologyKlinikum der Universität München Munich Germany
| | - Gabriela H. Spahn
- Institute of AnesthesiologyUniversity and University Hospital of Zurich Zurich Switzerland
| | - Alexander Kaserer
- Institute of AnesthesiologyUniversity and University Hospital of Zurich Zurich Switzerland
| | - Andreas Schedler
- Institute of AnesthesiologyUniversity and University Hospital of Zurich Zurich Switzerland
| | - Patrick Meybohm
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtGoethe University Frankfurt Germany
- Department of AnesthesiologyUniversity Hospital Wuerzburg Wuerzburg Germany
| | - Donat R. Spahn
- Institute of AnesthesiologyUniversity and University Hospital of Zurich Zurich Switzerland
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8
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Armitage AE, Moretti D. The Importance of Iron Status for Young Children in Low- and Middle-Income Countries: A Narrative Review. Pharmaceuticals (Basel) 2019; 12:E59. [PMID: 30995720 PMCID: PMC6631790 DOI: 10.3390/ph12020059] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/09/2019] [Accepted: 04/12/2019] [Indexed: 12/21/2022] Open
Abstract
Early childhood is characterised by high physiological iron demand to support processes including blood volume expansion, brain development and tissue growth. Iron is also required for other essential functions including the generation of effective immune responses. Adequate iron status is therefore a prerequisite for optimal child development, yet nutritional iron deficiency and inflammation-related iron restriction are widespread amongst young children in low- and middle-income countries (LMICs), meaning iron demands are frequently not met. Consequently, therapeutic iron interventions are commonly recommended. However, iron also influences infection pathogenesis: iron deficiency reduces the risk of malaria, while therapeutic iron may increase susceptibility to malaria, respiratory and gastrointestinal infections, besides reshaping the intestinal microbiome. This means caution should be employed in administering iron interventions to young children in LMIC settings with high infection burdens. In this narrative review, we first examine demand and supply of iron during early childhood, in relation to the molecular understanding of systemic iron control. We then evaluate the importance of iron for distinct aspects of physiology and development, particularly focusing on young LMIC children. We finally discuss the implications and potential for interventions aimed at improving iron status whilst minimising infection-related risks in such settings. Optimal iron intervention strategies will likely need to be individually or setting-specifically adapted according to iron deficiency, inflammation status and infection risk, while maximising iron bioavailability and considering the trade-offs between benefits and risks for different aspects of physiology. The effectiveness of alternative approaches not centred around nutritional iron interventions for children should also be thoroughly evaluated: these include direct targeting of common causes of infection/inflammation, and maternal iron administration during pregnancy.
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Affiliation(s)
- Andrew E Armitage
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK.
| | - Diego Moretti
- Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Sciences and Technology, ETH Zürich, CH-8092 Zürich, Switzerland.
- Nutrition Group, Health Department, Swiss Distance University of Applied Sciences, CH-8105 Regensdorf, Switzerland.
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9
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Non-invasive measurement of erythrocyte zinc protoporphyrin in children. Pediatr Res 2019; 85:349-354. [PMID: 30655607 DOI: 10.1038/s41390-018-0247-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 11/19/2018] [Accepted: 11/23/2018] [Indexed: 11/09/2022]
Abstract
BACKGROUND Reliable screening for iron deficiency (ID) has required a blood sample and cost-intensive laboratory measurements. A novel method to non-invasively measure erythrocyte zinc protoporphyrin (ZnPP), an established marker for ID, is evaluated in children. METHODS ZnPP was determined non-invasively by fluorescence measurements on the wet vermillion of the lower lip in 99 hospitalized children aged 9 months to 5 years. For comparison, conventional ID parameters and ZnPP were determined from blood samples. RESULTS The non-invasively measured ZnPP values had limits of agreement (LoA) of 14 µmol ZnPP/mol heme (95% confidence interval: 9-20) compared to fluorescence measurements directly in blood. Repeated high-performance liquid chromatography reference determinations had comparable LoA of 14 µmol ZnPP/mol heme (9-17). Non-invasive ZnPP measurements had sensitivity and specificity of 67% (39-88%) and 97% (91-99%), and negative and positive predictive value of 94% (90-97%) and 80% (55-93%), for detecting ID as defined by the soluble transferrin receptor (sTfR). In groups with more severe ID as defined by serum ferritin and sTfR, higher ZnPP values were found, with the highest ZnPP values for the group with ID anemia. CONCLUSION Non-invasive ZnPP measurements are reliably feasible in children. The simple and fast method has the potential to enable wide-spread screening for ID.
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Tong L, Kauer J, Chen X, Chu K, Dou H, Smith ZJ. Screening of nutritional and genetic anemias using elastic light scattering. LAB ON A CHIP 2018; 18:3263-3271. [PMID: 30264831 DOI: 10.1039/c8lc00377g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Anemia affects more than ¼ of the world's population, mostly concentrated in low-resource areas, and carries serious health risks. Yet current screening methods are inadequate due to their inability to separate iron deficiency anemia (IDA) from genetic anemias such as thalassemia trait (TT), thus preventing targeted supplementation of oral iron. Here we present an accurate approach to diagnose anemia and anemia type using measures of pediatric red cell morphology determined through machine learning applied to optical light scattering measurements. A partial least squares model shows that our system can accurately extract mean cell volume, red cell size heterogeneity, and mean cell hemoglobin concentration with high accuracy. These clinical parameters (or the raw data itself) can be submitted to machine learning algorithms such as quadratic discriminants or support vector machines to classify a patient into healthy, IDA, or TT. A clinical trial conducted on 268 Chinese children, of which 49 had IDA and 24 had TT, shows >98% sensitivity and specificity for diagnosing anemia, with 81% sensitivity and 86% specificity for discriminating IDA and TT. The majority of the misdiagnoses are IDA patients with particularly severe anemia, possibly requiring hospital care. Therefore, in a screening paradigm where anyone testing positive for TT is sent to the hospital for gold-standard diagnosis and care, we maximize patient benefit while minimizing use of scarce resources.
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Affiliation(s)
- Lieshu Tong
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui, China.
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